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Merge remote-tracking branch 'regulator/topic/core' into regulator-next
[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 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = "config", },
63 [NL80211_MCGRP_SCAN] = { .name = "scan", },
64 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
65 [NL80211_MCGRP_MLME] = { .name = "mlme", },
66 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 };
399
400 /* policy for the key attributes */
401 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
402 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
403 [NL80211_KEY_IDX] = { .type = NLA_U8 },
404 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
405 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
406 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
407 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
408 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
409 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
410 };
411
412 /* policy for the key default flags */
413 static const struct nla_policy
414 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
415 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
416 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
417 };
418
419 /* policy for WoWLAN attributes */
420 static const struct nla_policy
421 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
422 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
423 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
424 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
426 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
431 };
432
433 static const struct nla_policy
434 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
435 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
436 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
437 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
438 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
439 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
440 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
441 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
442 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
443 },
444 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
445 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
446 },
447 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
448 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
449 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
450 };
451
452 /* policy for coalesce rule attributes */
453 static const struct nla_policy
454 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
455 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
456 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
457 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
458 };
459
460 /* policy for GTK rekey offload attributes */
461 static const struct nla_policy
462 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
463 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
464 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
465 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
466 };
467
468 static const struct nla_policy
469 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
470 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
471 .len = IEEE80211_MAX_SSID_LEN },
472 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
473 };
474
475 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
476 struct netlink_callback *cb,
477 struct cfg80211_registered_device **rdev,
478 struct wireless_dev **wdev)
479 {
480 int err;
481
482 rtnl_lock();
483
484 if (!cb->args[0]) {
485 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
486 nl80211_fam.attrbuf, nl80211_fam.maxattr,
487 nl80211_policy);
488 if (err)
489 goto out_unlock;
490
491 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
492 nl80211_fam.attrbuf);
493 if (IS_ERR(*wdev)) {
494 err = PTR_ERR(*wdev);
495 goto out_unlock;
496 }
497 *rdev = wiphy_to_rdev((*wdev)->wiphy);
498 /* 0 is the first index - add 1 to parse only once */
499 cb->args[0] = (*rdev)->wiphy_idx + 1;
500 cb->args[1] = (*wdev)->identifier;
501 } else {
502 /* subtract the 1 again here */
503 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
504 struct wireless_dev *tmp;
505
506 if (!wiphy) {
507 err = -ENODEV;
508 goto out_unlock;
509 }
510 *rdev = wiphy_to_rdev(wiphy);
511 *wdev = NULL;
512
513 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
514 if (tmp->identifier == cb->args[1]) {
515 *wdev = tmp;
516 break;
517 }
518 }
519
520 if (!*wdev) {
521 err = -ENODEV;
522 goto out_unlock;
523 }
524 }
525
526 return 0;
527 out_unlock:
528 rtnl_unlock();
529 return err;
530 }
531
532 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
533 {
534 rtnl_unlock();
535 }
536
537 /* IE validation */
538 static bool is_valid_ie_attr(const struct nlattr *attr)
539 {
540 const u8 *pos;
541 int len;
542
543 if (!attr)
544 return true;
545
546 pos = nla_data(attr);
547 len = nla_len(attr);
548
549 while (len) {
550 u8 elemlen;
551
552 if (len < 2)
553 return false;
554 len -= 2;
555
556 elemlen = pos[1];
557 if (elemlen > len)
558 return false;
559
560 len -= elemlen;
561 pos += 2 + elemlen;
562 }
563
564 return true;
565 }
566
567 /* message building helper */
568 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
569 int flags, u8 cmd)
570 {
571 /* since there is no private header just add the generic one */
572 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
573 }
574
575 static int nl80211_msg_put_channel(struct sk_buff *msg,
576 struct ieee80211_channel *chan,
577 bool large)
578 {
579 /* Some channels must be completely excluded from the
580 * list to protect old user-space tools from breaking
581 */
582 if (!large && chan->flags &
583 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
584 return 0;
585
586 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
587 chan->center_freq))
588 goto nla_put_failure;
589
590 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
591 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
592 goto nla_put_failure;
593 if (chan->flags & IEEE80211_CHAN_NO_IR) {
594 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
595 goto nla_put_failure;
596 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
597 goto nla_put_failure;
598 }
599 if (chan->flags & IEEE80211_CHAN_RADAR) {
600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
601 goto nla_put_failure;
602 if (large) {
603 u32 time;
604
605 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
606
607 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
608 chan->dfs_state))
609 goto nla_put_failure;
610 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
611 time))
612 goto nla_put_failure;
613 if (nla_put_u32(msg,
614 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
615 chan->dfs_cac_ms))
616 goto nla_put_failure;
617 }
618 }
619
620 if (large) {
621 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
622 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
623 goto nla_put_failure;
624 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
625 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
626 goto nla_put_failure;
627 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
644 goto nla_put_failure;
645 }
646
647 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
648 DBM_TO_MBM(chan->max_power)))
649 goto nla_put_failure;
650
651 return 0;
652
653 nla_put_failure:
654 return -ENOBUFS;
655 }
656
657 /* netlink command implementations */
658
659 struct key_parse {
660 struct key_params p;
661 int idx;
662 int type;
663 bool def, defmgmt;
664 bool def_uni, def_multi;
665 };
666
667 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
668 {
669 struct nlattr *tb[NL80211_KEY_MAX + 1];
670 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
671 nl80211_key_policy);
672 if (err)
673 return err;
674
675 k->def = !!tb[NL80211_KEY_DEFAULT];
676 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
677
678 if (k->def) {
679 k->def_uni = true;
680 k->def_multi = true;
681 }
682 if (k->defmgmt)
683 k->def_multi = true;
684
685 if (tb[NL80211_KEY_IDX])
686 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
687
688 if (tb[NL80211_KEY_DATA]) {
689 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
690 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
691 }
692
693 if (tb[NL80211_KEY_SEQ]) {
694 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
695 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
696 }
697
698 if (tb[NL80211_KEY_CIPHER])
699 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
700
701 if (tb[NL80211_KEY_TYPE]) {
702 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
703 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
704 return -EINVAL;
705 }
706
707 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
708 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
709 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
710 tb[NL80211_KEY_DEFAULT_TYPES],
711 nl80211_key_default_policy);
712 if (err)
713 return err;
714
715 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
716 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
717 }
718
719 return 0;
720 }
721
722 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
723 {
724 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
725 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
726 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
727 }
728
729 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
730 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
731 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
732 }
733
734 if (info->attrs[NL80211_ATTR_KEY_IDX])
735 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
736
737 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
738 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
739
740 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
741 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
742
743 if (k->def) {
744 k->def_uni = true;
745 k->def_multi = true;
746 }
747 if (k->defmgmt)
748 k->def_multi = true;
749
750 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
751 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
752 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
753 return -EINVAL;
754 }
755
756 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
757 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
758 int err = nla_parse_nested(
759 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
760 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
761 nl80211_key_default_policy);
762 if (err)
763 return err;
764
765 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
766 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
767 }
768
769 return 0;
770 }
771
772 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
773 {
774 int err;
775
776 memset(k, 0, sizeof(*k));
777 k->idx = -1;
778 k->type = -1;
779
780 if (info->attrs[NL80211_ATTR_KEY])
781 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
782 else
783 err = nl80211_parse_key_old(info, k);
784
785 if (err)
786 return err;
787
788 if (k->def && k->defmgmt)
789 return -EINVAL;
790
791 if (k->defmgmt) {
792 if (k->def_uni || !k->def_multi)
793 return -EINVAL;
794 }
795
796 if (k->idx != -1) {
797 if (k->defmgmt) {
798 if (k->idx < 4 || k->idx > 5)
799 return -EINVAL;
800 } else if (k->def) {
801 if (k->idx < 0 || k->idx > 3)
802 return -EINVAL;
803 } else {
804 if (k->idx < 0 || k->idx > 5)
805 return -EINVAL;
806 }
807 }
808
809 return 0;
810 }
811
812 static struct cfg80211_cached_keys *
813 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
814 struct nlattr *keys, bool *no_ht)
815 {
816 struct key_parse parse;
817 struct nlattr *key;
818 struct cfg80211_cached_keys *result;
819 int rem, err, def = 0;
820
821 result = kzalloc(sizeof(*result), GFP_KERNEL);
822 if (!result)
823 return ERR_PTR(-ENOMEM);
824
825 result->def = -1;
826 result->defmgmt = -1;
827
828 nla_for_each_nested(key, keys, rem) {
829 memset(&parse, 0, sizeof(parse));
830 parse.idx = -1;
831
832 err = nl80211_parse_key_new(key, &parse);
833 if (err)
834 goto error;
835 err = -EINVAL;
836 if (!parse.p.key)
837 goto error;
838 if (parse.idx < 0 || parse.idx > 4)
839 goto error;
840 if (parse.def) {
841 if (def)
842 goto error;
843 def = 1;
844 result->def = parse.idx;
845 if (!parse.def_uni || !parse.def_multi)
846 goto error;
847 } else if (parse.defmgmt)
848 goto error;
849 err = cfg80211_validate_key_settings(rdev, &parse.p,
850 parse.idx, false, NULL);
851 if (err)
852 goto error;
853 result->params[parse.idx].cipher = parse.p.cipher;
854 result->params[parse.idx].key_len = parse.p.key_len;
855 result->params[parse.idx].key = result->data[parse.idx];
856 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
857
858 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
859 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
860 if (no_ht)
861 *no_ht = true;
862 }
863 }
864
865 return result;
866 error:
867 kfree(result);
868 return ERR_PTR(err);
869 }
870
871 static int nl80211_key_allowed(struct wireless_dev *wdev)
872 {
873 ASSERT_WDEV_LOCK(wdev);
874
875 switch (wdev->iftype) {
876 case NL80211_IFTYPE_AP:
877 case NL80211_IFTYPE_AP_VLAN:
878 case NL80211_IFTYPE_P2P_GO:
879 case NL80211_IFTYPE_MESH_POINT:
880 break;
881 case NL80211_IFTYPE_ADHOC:
882 case NL80211_IFTYPE_STATION:
883 case NL80211_IFTYPE_P2P_CLIENT:
884 if (!wdev->current_bss)
885 return -ENOLINK;
886 break;
887 default:
888 return -EINVAL;
889 }
890
891 return 0;
892 }
893
894 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
895 struct nlattr *tb)
896 {
897 struct ieee80211_channel *chan;
898
899 if (tb == NULL)
900 return NULL;
901 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
902 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
903 return NULL;
904 return chan;
905 }
906
907 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
908 {
909 struct nlattr *nl_modes = nla_nest_start(msg, attr);
910 int i;
911
912 if (!nl_modes)
913 goto nla_put_failure;
914
915 i = 0;
916 while (ifmodes) {
917 if ((ifmodes & 1) && nla_put_flag(msg, i))
918 goto nla_put_failure;
919 ifmodes >>= 1;
920 i++;
921 }
922
923 nla_nest_end(msg, nl_modes);
924 return 0;
925
926 nla_put_failure:
927 return -ENOBUFS;
928 }
929
930 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
931 struct sk_buff *msg,
932 bool large)
933 {
934 struct nlattr *nl_combis;
935 int i, j;
936
937 nl_combis = nla_nest_start(msg,
938 NL80211_ATTR_INTERFACE_COMBINATIONS);
939 if (!nl_combis)
940 goto nla_put_failure;
941
942 for (i = 0; i < wiphy->n_iface_combinations; i++) {
943 const struct ieee80211_iface_combination *c;
944 struct nlattr *nl_combi, *nl_limits;
945
946 c = &wiphy->iface_combinations[i];
947
948 nl_combi = nla_nest_start(msg, i + 1);
949 if (!nl_combi)
950 goto nla_put_failure;
951
952 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
953 if (!nl_limits)
954 goto nla_put_failure;
955
956 for (j = 0; j < c->n_limits; j++) {
957 struct nlattr *nl_limit;
958
959 nl_limit = nla_nest_start(msg, j + 1);
960 if (!nl_limit)
961 goto nla_put_failure;
962 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
963 c->limits[j].max))
964 goto nla_put_failure;
965 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
966 c->limits[j].types))
967 goto nla_put_failure;
968 nla_nest_end(msg, nl_limit);
969 }
970
971 nla_nest_end(msg, nl_limits);
972
973 if (c->beacon_int_infra_match &&
974 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
975 goto nla_put_failure;
976 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
977 c->num_different_channels) ||
978 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
979 c->max_interfaces))
980 goto nla_put_failure;
981 if (large &&
982 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
983 c->radar_detect_widths) ||
984 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
985 c->radar_detect_regions)))
986 goto nla_put_failure;
987
988 nla_nest_end(msg, nl_combi);
989 }
990
991 nla_nest_end(msg, nl_combis);
992
993 return 0;
994 nla_put_failure:
995 return -ENOBUFS;
996 }
997
998 #ifdef CONFIG_PM
999 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1000 struct sk_buff *msg)
1001 {
1002 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1003 struct nlattr *nl_tcp;
1004
1005 if (!tcp)
1006 return 0;
1007
1008 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1009 if (!nl_tcp)
1010 return -ENOBUFS;
1011
1012 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1013 tcp->data_payload_max))
1014 return -ENOBUFS;
1015
1016 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1017 tcp->data_payload_max))
1018 return -ENOBUFS;
1019
1020 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1021 return -ENOBUFS;
1022
1023 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1024 sizeof(*tcp->tok), tcp->tok))
1025 return -ENOBUFS;
1026
1027 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1028 tcp->data_interval_max))
1029 return -ENOBUFS;
1030
1031 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1032 tcp->wake_payload_max))
1033 return -ENOBUFS;
1034
1035 nla_nest_end(msg, nl_tcp);
1036 return 0;
1037 }
1038
1039 static int nl80211_send_wowlan(struct sk_buff *msg,
1040 struct cfg80211_registered_device *rdev,
1041 bool large)
1042 {
1043 struct nlattr *nl_wowlan;
1044
1045 if (!rdev->wiphy.wowlan)
1046 return 0;
1047
1048 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1049 if (!nl_wowlan)
1050 return -ENOBUFS;
1051
1052 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1053 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1054 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1055 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1056 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1057 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1058 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1059 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1060 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1061 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1062 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1068 return -ENOBUFS;
1069
1070 if (rdev->wiphy.wowlan->n_patterns) {
1071 struct nl80211_pattern_support pat = {
1072 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1073 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1074 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1075 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1076 };
1077
1078 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1079 sizeof(pat), &pat))
1080 return -ENOBUFS;
1081 }
1082
1083 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1084 return -ENOBUFS;
1085
1086 nla_nest_end(msg, nl_wowlan);
1087
1088 return 0;
1089 }
1090 #endif
1091
1092 static int nl80211_send_coalesce(struct sk_buff *msg,
1093 struct cfg80211_registered_device *rdev)
1094 {
1095 struct nl80211_coalesce_rule_support rule;
1096
1097 if (!rdev->wiphy.coalesce)
1098 return 0;
1099
1100 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1101 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1102 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1103 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1104 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1105 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1106
1107 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1108 return -ENOBUFS;
1109
1110 return 0;
1111 }
1112
1113 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1114 struct ieee80211_supported_band *sband)
1115 {
1116 struct nlattr *nl_rates, *nl_rate;
1117 struct ieee80211_rate *rate;
1118 int i;
1119
1120 /* add HT info */
1121 if (sband->ht_cap.ht_supported &&
1122 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1123 sizeof(sband->ht_cap.mcs),
1124 &sband->ht_cap.mcs) ||
1125 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1126 sband->ht_cap.cap) ||
1127 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1128 sband->ht_cap.ampdu_factor) ||
1129 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1130 sband->ht_cap.ampdu_density)))
1131 return -ENOBUFS;
1132
1133 /* add VHT info */
1134 if (sband->vht_cap.vht_supported &&
1135 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1136 sizeof(sband->vht_cap.vht_mcs),
1137 &sband->vht_cap.vht_mcs) ||
1138 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1139 sband->vht_cap.cap)))
1140 return -ENOBUFS;
1141
1142 /* add bitrates */
1143 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1144 if (!nl_rates)
1145 return -ENOBUFS;
1146
1147 for (i = 0; i < sband->n_bitrates; i++) {
1148 nl_rate = nla_nest_start(msg, i);
1149 if (!nl_rate)
1150 return -ENOBUFS;
1151
1152 rate = &sband->bitrates[i];
1153 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1154 rate->bitrate))
1155 return -ENOBUFS;
1156 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1157 nla_put_flag(msg,
1158 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1159 return -ENOBUFS;
1160
1161 nla_nest_end(msg, nl_rate);
1162 }
1163
1164 nla_nest_end(msg, nl_rates);
1165
1166 return 0;
1167 }
1168
1169 static int
1170 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1171 const struct ieee80211_txrx_stypes *mgmt_stypes)
1172 {
1173 u16 stypes;
1174 struct nlattr *nl_ftypes, *nl_ifs;
1175 enum nl80211_iftype ift;
1176 int i;
1177
1178 if (!mgmt_stypes)
1179 return 0;
1180
1181 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1182 if (!nl_ifs)
1183 return -ENOBUFS;
1184
1185 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1186 nl_ftypes = nla_nest_start(msg, ift);
1187 if (!nl_ftypes)
1188 return -ENOBUFS;
1189 i = 0;
1190 stypes = mgmt_stypes[ift].tx;
1191 while (stypes) {
1192 if ((stypes & 1) &&
1193 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1194 (i << 4) | IEEE80211_FTYPE_MGMT))
1195 return -ENOBUFS;
1196 stypes >>= 1;
1197 i++;
1198 }
1199 nla_nest_end(msg, nl_ftypes);
1200 }
1201
1202 nla_nest_end(msg, nl_ifs);
1203
1204 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_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].rx;
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 nla_nest_end(msg, nl_ifs);
1225
1226 return 0;
1227 }
1228
1229 struct nl80211_dump_wiphy_state {
1230 s64 filter_wiphy;
1231 long start;
1232 long split_start, band_start, chan_start;
1233 bool split;
1234 };
1235
1236 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1237 enum nl80211_commands cmd,
1238 struct sk_buff *msg, u32 portid, u32 seq,
1239 int flags, struct nl80211_dump_wiphy_state *state)
1240 {
1241 void *hdr;
1242 struct nlattr *nl_bands, *nl_band;
1243 struct nlattr *nl_freqs, *nl_freq;
1244 struct nlattr *nl_cmds;
1245 enum ieee80211_band band;
1246 struct ieee80211_channel *chan;
1247 int i;
1248 const struct ieee80211_txrx_stypes *mgmt_stypes =
1249 rdev->wiphy.mgmt_stypes;
1250 u32 features;
1251
1252 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1253 if (!hdr)
1254 return -ENOBUFS;
1255
1256 if (WARN_ON(!state))
1257 return -EINVAL;
1258
1259 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1260 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1261 wiphy_name(&rdev->wiphy)) ||
1262 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1263 cfg80211_rdev_list_generation))
1264 goto nla_put_failure;
1265
1266 if (cmd != NL80211_CMD_NEW_WIPHY)
1267 goto finish;
1268
1269 switch (state->split_start) {
1270 case 0:
1271 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1272 rdev->wiphy.retry_short) ||
1273 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1274 rdev->wiphy.retry_long) ||
1275 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1276 rdev->wiphy.frag_threshold) ||
1277 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1278 rdev->wiphy.rts_threshold) ||
1279 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1280 rdev->wiphy.coverage_class) ||
1281 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1282 rdev->wiphy.max_scan_ssids) ||
1283 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1284 rdev->wiphy.max_sched_scan_ssids) ||
1285 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1286 rdev->wiphy.max_scan_ie_len) ||
1287 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1288 rdev->wiphy.max_sched_scan_ie_len) ||
1289 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1290 rdev->wiphy.max_match_sets))
1291 goto nla_put_failure;
1292
1293 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1294 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1295 goto nla_put_failure;
1296 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1297 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1298 goto nla_put_failure;
1299 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1300 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1301 goto nla_put_failure;
1302 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1303 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1304 goto nla_put_failure;
1305 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1306 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1307 goto nla_put_failure;
1308 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1309 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1310 goto nla_put_failure;
1311 state->split_start++;
1312 if (state->split)
1313 break;
1314 case 1:
1315 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1316 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1317 rdev->wiphy.cipher_suites))
1318 goto nla_put_failure;
1319
1320 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1321 rdev->wiphy.max_num_pmkids))
1322 goto nla_put_failure;
1323
1324 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1325 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1326 goto nla_put_failure;
1327
1328 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1329 rdev->wiphy.available_antennas_tx) ||
1330 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1331 rdev->wiphy.available_antennas_rx))
1332 goto nla_put_failure;
1333
1334 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1335 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1336 rdev->wiphy.probe_resp_offload))
1337 goto nla_put_failure;
1338
1339 if ((rdev->wiphy.available_antennas_tx ||
1340 rdev->wiphy.available_antennas_rx) &&
1341 rdev->ops->get_antenna) {
1342 u32 tx_ant = 0, rx_ant = 0;
1343 int res;
1344 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1345 if (!res) {
1346 if (nla_put_u32(msg,
1347 NL80211_ATTR_WIPHY_ANTENNA_TX,
1348 tx_ant) ||
1349 nla_put_u32(msg,
1350 NL80211_ATTR_WIPHY_ANTENNA_RX,
1351 rx_ant))
1352 goto nla_put_failure;
1353 }
1354 }
1355
1356 state->split_start++;
1357 if (state->split)
1358 break;
1359 case 2:
1360 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1361 rdev->wiphy.interface_modes))
1362 goto nla_put_failure;
1363 state->split_start++;
1364 if (state->split)
1365 break;
1366 case 3:
1367 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1368 if (!nl_bands)
1369 goto nla_put_failure;
1370
1371 for (band = state->band_start;
1372 band < IEEE80211_NUM_BANDS; band++) {
1373 struct ieee80211_supported_band *sband;
1374
1375 sband = rdev->wiphy.bands[band];
1376
1377 if (!sband)
1378 continue;
1379
1380 nl_band = nla_nest_start(msg, band);
1381 if (!nl_band)
1382 goto nla_put_failure;
1383
1384 switch (state->chan_start) {
1385 case 0:
1386 if (nl80211_send_band_rateinfo(msg, sband))
1387 goto nla_put_failure;
1388 state->chan_start++;
1389 if (state->split)
1390 break;
1391 default:
1392 /* add frequencies */
1393 nl_freqs = nla_nest_start(
1394 msg, NL80211_BAND_ATTR_FREQS);
1395 if (!nl_freqs)
1396 goto nla_put_failure;
1397
1398 for (i = state->chan_start - 1;
1399 i < sband->n_channels;
1400 i++) {
1401 nl_freq = nla_nest_start(msg, i);
1402 if (!nl_freq)
1403 goto nla_put_failure;
1404
1405 chan = &sband->channels[i];
1406
1407 if (nl80211_msg_put_channel(
1408 msg, chan,
1409 state->split))
1410 goto nla_put_failure;
1411
1412 nla_nest_end(msg, nl_freq);
1413 if (state->split)
1414 break;
1415 }
1416 if (i < sband->n_channels)
1417 state->chan_start = i + 2;
1418 else
1419 state->chan_start = 0;
1420 nla_nest_end(msg, nl_freqs);
1421 }
1422
1423 nla_nest_end(msg, nl_band);
1424
1425 if (state->split) {
1426 /* start again here */
1427 if (state->chan_start)
1428 band--;
1429 break;
1430 }
1431 }
1432 nla_nest_end(msg, nl_bands);
1433
1434 if (band < IEEE80211_NUM_BANDS)
1435 state->band_start = band + 1;
1436 else
1437 state->band_start = 0;
1438
1439 /* if bands & channels are done, continue outside */
1440 if (state->band_start == 0 && state->chan_start == 0)
1441 state->split_start++;
1442 if (state->split)
1443 break;
1444 case 4:
1445 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1446 if (!nl_cmds)
1447 goto nla_put_failure;
1448
1449 i = 0;
1450 #define CMD(op, n) \
1451 do { \
1452 if (rdev->ops->op) { \
1453 i++; \
1454 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1455 goto nla_put_failure; \
1456 } \
1457 } while (0)
1458
1459 CMD(add_virtual_intf, NEW_INTERFACE);
1460 CMD(change_virtual_intf, SET_INTERFACE);
1461 CMD(add_key, NEW_KEY);
1462 CMD(start_ap, START_AP);
1463 CMD(add_station, NEW_STATION);
1464 CMD(add_mpath, NEW_MPATH);
1465 CMD(update_mesh_config, SET_MESH_CONFIG);
1466 CMD(change_bss, SET_BSS);
1467 CMD(auth, AUTHENTICATE);
1468 CMD(assoc, ASSOCIATE);
1469 CMD(deauth, DEAUTHENTICATE);
1470 CMD(disassoc, DISASSOCIATE);
1471 CMD(join_ibss, JOIN_IBSS);
1472 CMD(join_mesh, JOIN_MESH);
1473 CMD(set_pmksa, SET_PMKSA);
1474 CMD(del_pmksa, DEL_PMKSA);
1475 CMD(flush_pmksa, FLUSH_PMKSA);
1476 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1477 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1478 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1479 CMD(mgmt_tx, FRAME);
1480 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1481 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1482 i++;
1483 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1484 goto nla_put_failure;
1485 }
1486 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1487 rdev->ops->join_mesh) {
1488 i++;
1489 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1490 goto nla_put_failure;
1491 }
1492 CMD(set_wds_peer, SET_WDS_PEER);
1493 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1494 CMD(tdls_mgmt, TDLS_MGMT);
1495 CMD(tdls_oper, TDLS_OPER);
1496 }
1497 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1498 CMD(sched_scan_start, START_SCHED_SCAN);
1499 CMD(probe_client, PROBE_CLIENT);
1500 CMD(set_noack_map, SET_NOACK_MAP);
1501 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1502 i++;
1503 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1504 goto nla_put_failure;
1505 }
1506 CMD(start_p2p_device, START_P2P_DEVICE);
1507 CMD(set_mcast_rate, SET_MCAST_RATE);
1508 #ifdef CONFIG_NL80211_TESTMODE
1509 CMD(testmode_cmd, TESTMODE);
1510 #endif
1511 if (state->split) {
1512 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1513 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1514 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1515 CMD(channel_switch, CHANNEL_SWITCH);
1516 CMD(set_qos_map, SET_QOS_MAP);
1517 if (rdev->wiphy.flags &
1518 WIPHY_FLAG_SUPPORTS_WMM_ADMISSION)
1519 CMD(add_tx_ts, ADD_TX_TS);
1520 }
1521 /* add into the if now */
1522 #undef CMD
1523
1524 if (rdev->ops->connect || rdev->ops->auth) {
1525 i++;
1526 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1527 goto nla_put_failure;
1528 }
1529
1530 if (rdev->ops->disconnect || rdev->ops->deauth) {
1531 i++;
1532 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1533 goto nla_put_failure;
1534 }
1535
1536 nla_nest_end(msg, nl_cmds);
1537 state->split_start++;
1538 if (state->split)
1539 break;
1540 case 5:
1541 if (rdev->ops->remain_on_channel &&
1542 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1543 nla_put_u32(msg,
1544 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1545 rdev->wiphy.max_remain_on_channel_duration))
1546 goto nla_put_failure;
1547
1548 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1549 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1550 goto nla_put_failure;
1551
1552 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1553 goto nla_put_failure;
1554 state->split_start++;
1555 if (state->split)
1556 break;
1557 case 6:
1558 #ifdef CONFIG_PM
1559 if (nl80211_send_wowlan(msg, rdev, state->split))
1560 goto nla_put_failure;
1561 state->split_start++;
1562 if (state->split)
1563 break;
1564 #else
1565 state->split_start++;
1566 #endif
1567 case 7:
1568 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1569 rdev->wiphy.software_iftypes))
1570 goto nla_put_failure;
1571
1572 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1573 state->split))
1574 goto nla_put_failure;
1575
1576 state->split_start++;
1577 if (state->split)
1578 break;
1579 case 8:
1580 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1581 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1582 rdev->wiphy.ap_sme_capa))
1583 goto nla_put_failure;
1584
1585 features = rdev->wiphy.features;
1586 /*
1587 * We can only add the per-channel limit information if the
1588 * dump is split, otherwise it makes it too big. Therefore
1589 * only advertise it in that case.
1590 */
1591 if (state->split)
1592 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1593 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1594 goto nla_put_failure;
1595
1596 if (rdev->wiphy.ht_capa_mod_mask &&
1597 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1598 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1599 rdev->wiphy.ht_capa_mod_mask))
1600 goto nla_put_failure;
1601
1602 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1603 rdev->wiphy.max_acl_mac_addrs &&
1604 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1605 rdev->wiphy.max_acl_mac_addrs))
1606 goto nla_put_failure;
1607
1608 /*
1609 * Any information below this point is only available to
1610 * applications that can deal with it being split. This
1611 * helps ensure that newly added capabilities don't break
1612 * older tools by overrunning their buffers.
1613 *
1614 * We still increment split_start so that in the split
1615 * case we'll continue with more data in the next round,
1616 * but break unconditionally so unsplit data stops here.
1617 */
1618 state->split_start++;
1619 break;
1620 case 9:
1621 if (rdev->wiphy.extended_capabilities &&
1622 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1623 rdev->wiphy.extended_capabilities_len,
1624 rdev->wiphy.extended_capabilities) ||
1625 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1626 rdev->wiphy.extended_capabilities_len,
1627 rdev->wiphy.extended_capabilities_mask)))
1628 goto nla_put_failure;
1629
1630 if (rdev->wiphy.vht_capa_mod_mask &&
1631 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1632 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1633 rdev->wiphy.vht_capa_mod_mask))
1634 goto nla_put_failure;
1635
1636 state->split_start++;
1637 break;
1638 case 10:
1639 if (nl80211_send_coalesce(msg, rdev))
1640 goto nla_put_failure;
1641
1642 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1643 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1644 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1645 goto nla_put_failure;
1646
1647 if (rdev->wiphy.max_ap_assoc_sta &&
1648 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1649 rdev->wiphy.max_ap_assoc_sta))
1650 goto nla_put_failure;
1651
1652 state->split_start++;
1653 break;
1654 case 11:
1655 if (rdev->wiphy.n_vendor_commands) {
1656 const struct nl80211_vendor_cmd_info *info;
1657 struct nlattr *nested;
1658
1659 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1660 if (!nested)
1661 goto nla_put_failure;
1662
1663 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1664 info = &rdev->wiphy.vendor_commands[i].info;
1665 if (nla_put(msg, i + 1, sizeof(*info), info))
1666 goto nla_put_failure;
1667 }
1668 nla_nest_end(msg, nested);
1669 }
1670
1671 if (rdev->wiphy.n_vendor_events) {
1672 const struct nl80211_vendor_cmd_info *info;
1673 struct nlattr *nested;
1674
1675 nested = nla_nest_start(msg,
1676 NL80211_ATTR_VENDOR_EVENTS);
1677 if (!nested)
1678 goto nla_put_failure;
1679
1680 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1681 info = &rdev->wiphy.vendor_events[i];
1682 if (nla_put(msg, i + 1, sizeof(*info), info))
1683 goto nla_put_failure;
1684 }
1685 nla_nest_end(msg, nested);
1686 }
1687 state->split_start++;
1688 break;
1689 case 12:
1690 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1691 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1692 rdev->wiphy.max_num_csa_counters))
1693 goto nla_put_failure;
1694
1695 /* done */
1696 state->split_start = 0;
1697 break;
1698 }
1699 finish:
1700 return genlmsg_end(msg, hdr);
1701
1702 nla_put_failure:
1703 genlmsg_cancel(msg, hdr);
1704 return -EMSGSIZE;
1705 }
1706
1707 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1708 struct netlink_callback *cb,
1709 struct nl80211_dump_wiphy_state *state)
1710 {
1711 struct nlattr **tb = nl80211_fam.attrbuf;
1712 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1713 tb, nl80211_fam.maxattr, nl80211_policy);
1714 /* ignore parse errors for backward compatibility */
1715 if (ret)
1716 return 0;
1717
1718 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1719 if (tb[NL80211_ATTR_WIPHY])
1720 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1721 if (tb[NL80211_ATTR_WDEV])
1722 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1723 if (tb[NL80211_ATTR_IFINDEX]) {
1724 struct net_device *netdev;
1725 struct cfg80211_registered_device *rdev;
1726 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1727
1728 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1729 if (!netdev)
1730 return -ENODEV;
1731 if (netdev->ieee80211_ptr) {
1732 rdev = wiphy_to_rdev(
1733 netdev->ieee80211_ptr->wiphy);
1734 state->filter_wiphy = rdev->wiphy_idx;
1735 }
1736 }
1737
1738 return 0;
1739 }
1740
1741 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1742 {
1743 int idx = 0, ret;
1744 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1745 struct cfg80211_registered_device *rdev;
1746
1747 rtnl_lock();
1748 if (!state) {
1749 state = kzalloc(sizeof(*state), GFP_KERNEL);
1750 if (!state) {
1751 rtnl_unlock();
1752 return -ENOMEM;
1753 }
1754 state->filter_wiphy = -1;
1755 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1756 if (ret) {
1757 kfree(state);
1758 rtnl_unlock();
1759 return ret;
1760 }
1761 cb->args[0] = (long)state;
1762 }
1763
1764 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1765 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1766 continue;
1767 if (++idx <= state->start)
1768 continue;
1769 if (state->filter_wiphy != -1 &&
1770 state->filter_wiphy != rdev->wiphy_idx)
1771 continue;
1772 /* attempt to fit multiple wiphy data chunks into the skb */
1773 do {
1774 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1775 skb,
1776 NETLINK_CB(cb->skb).portid,
1777 cb->nlh->nlmsg_seq,
1778 NLM_F_MULTI, state);
1779 if (ret < 0) {
1780 /*
1781 * If sending the wiphy data didn't fit (ENOBUFS
1782 * or EMSGSIZE returned), this SKB is still
1783 * empty (so it's not too big because another
1784 * wiphy dataset is already in the skb) and
1785 * we've not tried to adjust the dump allocation
1786 * yet ... then adjust the alloc size to be
1787 * bigger, and return 1 but with the empty skb.
1788 * This results in an empty message being RX'ed
1789 * in userspace, but that is ignored.
1790 *
1791 * We can then retry with the larger buffer.
1792 */
1793 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1794 !skb->len && !state->split &&
1795 cb->min_dump_alloc < 4096) {
1796 cb->min_dump_alloc = 4096;
1797 state->split_start = 0;
1798 rtnl_unlock();
1799 return 1;
1800 }
1801 idx--;
1802 break;
1803 }
1804 } while (state->split_start > 0);
1805 break;
1806 }
1807 rtnl_unlock();
1808
1809 state->start = idx;
1810
1811 return skb->len;
1812 }
1813
1814 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1815 {
1816 kfree((void *)cb->args[0]);
1817 return 0;
1818 }
1819
1820 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1821 {
1822 struct sk_buff *msg;
1823 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1824 struct nl80211_dump_wiphy_state state = {};
1825
1826 msg = nlmsg_new(4096, GFP_KERNEL);
1827 if (!msg)
1828 return -ENOMEM;
1829
1830 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1831 info->snd_portid, info->snd_seq, 0,
1832 &state) < 0) {
1833 nlmsg_free(msg);
1834 return -ENOBUFS;
1835 }
1836
1837 return genlmsg_reply(msg, info);
1838 }
1839
1840 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1841 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1842 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1843 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1844 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1845 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1846 };
1847
1848 static int parse_txq_params(struct nlattr *tb[],
1849 struct ieee80211_txq_params *txq_params)
1850 {
1851 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1852 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1853 !tb[NL80211_TXQ_ATTR_AIFS])
1854 return -EINVAL;
1855
1856 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1857 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1858 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1859 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1860 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1861
1862 if (txq_params->ac >= NL80211_NUM_ACS)
1863 return -EINVAL;
1864
1865 return 0;
1866 }
1867
1868 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1869 {
1870 /*
1871 * You can only set the channel explicitly for WDS interfaces,
1872 * all others have their channel managed via their respective
1873 * "establish a connection" command (connect, join, ...)
1874 *
1875 * For AP/GO and mesh mode, the channel can be set with the
1876 * channel userspace API, but is only stored and passed to the
1877 * low-level driver when the AP starts or the mesh is joined.
1878 * This is for backward compatibility, userspace can also give
1879 * the channel in the start-ap or join-mesh commands instead.
1880 *
1881 * Monitors are special as they are normally slaved to
1882 * whatever else is going on, so they have their own special
1883 * operation to set the monitor channel if possible.
1884 */
1885 return !wdev ||
1886 wdev->iftype == NL80211_IFTYPE_AP ||
1887 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1888 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1889 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1890 }
1891
1892 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1893 struct genl_info *info,
1894 struct cfg80211_chan_def *chandef)
1895 {
1896 u32 control_freq;
1897
1898 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1899 return -EINVAL;
1900
1901 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1902
1903 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1904 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1905 chandef->center_freq1 = control_freq;
1906 chandef->center_freq2 = 0;
1907
1908 /* Primary channel not allowed */
1909 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1910 return -EINVAL;
1911
1912 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1913 enum nl80211_channel_type chantype;
1914
1915 chantype = nla_get_u32(
1916 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1917
1918 switch (chantype) {
1919 case NL80211_CHAN_NO_HT:
1920 case NL80211_CHAN_HT20:
1921 case NL80211_CHAN_HT40PLUS:
1922 case NL80211_CHAN_HT40MINUS:
1923 cfg80211_chandef_create(chandef, chandef->chan,
1924 chantype);
1925 break;
1926 default:
1927 return -EINVAL;
1928 }
1929 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1930 chandef->width =
1931 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1932 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1933 chandef->center_freq1 =
1934 nla_get_u32(
1935 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1936 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1937 chandef->center_freq2 =
1938 nla_get_u32(
1939 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1940 }
1941
1942 if (!cfg80211_chandef_valid(chandef))
1943 return -EINVAL;
1944
1945 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1946 IEEE80211_CHAN_DISABLED))
1947 return -EINVAL;
1948
1949 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1950 chandef->width == NL80211_CHAN_WIDTH_10) &&
1951 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1952 return -EINVAL;
1953
1954 return 0;
1955 }
1956
1957 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1958 struct net_device *dev,
1959 struct genl_info *info)
1960 {
1961 struct cfg80211_chan_def chandef;
1962 int result;
1963 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1964 struct wireless_dev *wdev = NULL;
1965
1966 if (dev)
1967 wdev = dev->ieee80211_ptr;
1968 if (!nl80211_can_set_dev_channel(wdev))
1969 return -EOPNOTSUPP;
1970 if (wdev)
1971 iftype = wdev->iftype;
1972
1973 result = nl80211_parse_chandef(rdev, info, &chandef);
1974 if (result)
1975 return result;
1976
1977 switch (iftype) {
1978 case NL80211_IFTYPE_AP:
1979 case NL80211_IFTYPE_P2P_GO:
1980 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1981 result = -EINVAL;
1982 break;
1983 }
1984 if (wdev->beacon_interval) {
1985 if (!dev || !rdev->ops->set_ap_chanwidth ||
1986 !(rdev->wiphy.features &
1987 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1988 result = -EBUSY;
1989 break;
1990 }
1991
1992 /* Only allow dynamic channel width changes */
1993 if (chandef.chan != wdev->preset_chandef.chan) {
1994 result = -EBUSY;
1995 break;
1996 }
1997 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
1998 if (result)
1999 break;
2000 }
2001 wdev->preset_chandef = chandef;
2002 result = 0;
2003 break;
2004 case NL80211_IFTYPE_MESH_POINT:
2005 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2006 break;
2007 case NL80211_IFTYPE_MONITOR:
2008 result = cfg80211_set_monitor_channel(rdev, &chandef);
2009 break;
2010 default:
2011 result = -EINVAL;
2012 }
2013
2014 return result;
2015 }
2016
2017 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2018 {
2019 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2020 struct net_device *netdev = info->user_ptr[1];
2021
2022 return __nl80211_set_channel(rdev, netdev, info);
2023 }
2024
2025 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2026 {
2027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2028 struct net_device *dev = info->user_ptr[1];
2029 struct wireless_dev *wdev = dev->ieee80211_ptr;
2030 const u8 *bssid;
2031
2032 if (!info->attrs[NL80211_ATTR_MAC])
2033 return -EINVAL;
2034
2035 if (netif_running(dev))
2036 return -EBUSY;
2037
2038 if (!rdev->ops->set_wds_peer)
2039 return -EOPNOTSUPP;
2040
2041 if (wdev->iftype != NL80211_IFTYPE_WDS)
2042 return -EOPNOTSUPP;
2043
2044 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2045 return rdev_set_wds_peer(rdev, dev, bssid);
2046 }
2047
2048
2049 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2050 {
2051 struct cfg80211_registered_device *rdev;
2052 struct net_device *netdev = NULL;
2053 struct wireless_dev *wdev;
2054 int result = 0, rem_txq_params = 0;
2055 struct nlattr *nl_txq_params;
2056 u32 changed;
2057 u8 retry_short = 0, retry_long = 0;
2058 u32 frag_threshold = 0, rts_threshold = 0;
2059 u8 coverage_class = 0;
2060
2061 ASSERT_RTNL();
2062
2063 /*
2064 * Try to find the wiphy and netdev. Normally this
2065 * function shouldn't need the netdev, but this is
2066 * done for backward compatibility -- previously
2067 * setting the channel was done per wiphy, but now
2068 * it is per netdev. Previous userland like hostapd
2069 * also passed a netdev to set_wiphy, so that it is
2070 * possible to let that go to the right netdev!
2071 */
2072
2073 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2074 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2075
2076 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2077 if (netdev && netdev->ieee80211_ptr)
2078 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2079 else
2080 netdev = NULL;
2081 }
2082
2083 if (!netdev) {
2084 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2085 info->attrs);
2086 if (IS_ERR(rdev))
2087 return PTR_ERR(rdev);
2088 wdev = NULL;
2089 netdev = NULL;
2090 result = 0;
2091 } else
2092 wdev = netdev->ieee80211_ptr;
2093
2094 /*
2095 * end workaround code, by now the rdev is available
2096 * and locked, and wdev may or may not be NULL.
2097 */
2098
2099 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2100 result = cfg80211_dev_rename(
2101 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2102
2103 if (result)
2104 return result;
2105
2106 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2107 struct ieee80211_txq_params txq_params;
2108 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2109
2110 if (!rdev->ops->set_txq_params)
2111 return -EOPNOTSUPP;
2112
2113 if (!netdev)
2114 return -EINVAL;
2115
2116 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2117 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2118 return -EINVAL;
2119
2120 if (!netif_running(netdev))
2121 return -ENETDOWN;
2122
2123 nla_for_each_nested(nl_txq_params,
2124 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2125 rem_txq_params) {
2126 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2127 nla_data(nl_txq_params),
2128 nla_len(nl_txq_params),
2129 txq_params_policy);
2130 if (result)
2131 return result;
2132 result = parse_txq_params(tb, &txq_params);
2133 if (result)
2134 return result;
2135
2136 result = rdev_set_txq_params(rdev, netdev,
2137 &txq_params);
2138 if (result)
2139 return result;
2140 }
2141 }
2142
2143 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2144 result = __nl80211_set_channel(
2145 rdev,
2146 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2147 info);
2148 if (result)
2149 return result;
2150 }
2151
2152 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2153 struct wireless_dev *txp_wdev = wdev;
2154 enum nl80211_tx_power_setting type;
2155 int idx, mbm = 0;
2156
2157 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2158 txp_wdev = NULL;
2159
2160 if (!rdev->ops->set_tx_power)
2161 return -EOPNOTSUPP;
2162
2163 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2164 type = nla_get_u32(info->attrs[idx]);
2165
2166 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2167 (type != NL80211_TX_POWER_AUTOMATIC))
2168 return -EINVAL;
2169
2170 if (type != NL80211_TX_POWER_AUTOMATIC) {
2171 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2172 mbm = nla_get_u32(info->attrs[idx]);
2173 }
2174
2175 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2176 if (result)
2177 return result;
2178 }
2179
2180 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2181 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2182 u32 tx_ant, rx_ant;
2183 if ((!rdev->wiphy.available_antennas_tx &&
2184 !rdev->wiphy.available_antennas_rx) ||
2185 !rdev->ops->set_antenna)
2186 return -EOPNOTSUPP;
2187
2188 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2189 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2190
2191 /* reject antenna configurations which don't match the
2192 * available antenna masks, except for the "all" mask */
2193 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2194 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2195 return -EINVAL;
2196
2197 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2198 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2199
2200 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2201 if (result)
2202 return result;
2203 }
2204
2205 changed = 0;
2206
2207 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2208 retry_short = nla_get_u8(
2209 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2210 if (retry_short == 0)
2211 return -EINVAL;
2212
2213 changed |= WIPHY_PARAM_RETRY_SHORT;
2214 }
2215
2216 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2217 retry_long = nla_get_u8(
2218 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2219 if (retry_long == 0)
2220 return -EINVAL;
2221
2222 changed |= WIPHY_PARAM_RETRY_LONG;
2223 }
2224
2225 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2226 frag_threshold = nla_get_u32(
2227 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2228 if (frag_threshold < 256)
2229 return -EINVAL;
2230
2231 if (frag_threshold != (u32) -1) {
2232 /*
2233 * Fragments (apart from the last one) are required to
2234 * have even length. Make the fragmentation code
2235 * simpler by stripping LSB should someone try to use
2236 * odd threshold value.
2237 */
2238 frag_threshold &= ~0x1;
2239 }
2240 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2241 }
2242
2243 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2244 rts_threshold = nla_get_u32(
2245 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2246 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2247 }
2248
2249 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2250 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2251 return -EINVAL;
2252
2253 coverage_class = nla_get_u8(
2254 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2255 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2256 }
2257
2258 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2259 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2260 return -EOPNOTSUPP;
2261
2262 changed |= WIPHY_PARAM_DYN_ACK;
2263 }
2264
2265 if (changed) {
2266 u8 old_retry_short, old_retry_long;
2267 u32 old_frag_threshold, old_rts_threshold;
2268 u8 old_coverage_class;
2269
2270 if (!rdev->ops->set_wiphy_params)
2271 return -EOPNOTSUPP;
2272
2273 old_retry_short = rdev->wiphy.retry_short;
2274 old_retry_long = rdev->wiphy.retry_long;
2275 old_frag_threshold = rdev->wiphy.frag_threshold;
2276 old_rts_threshold = rdev->wiphy.rts_threshold;
2277 old_coverage_class = rdev->wiphy.coverage_class;
2278
2279 if (changed & WIPHY_PARAM_RETRY_SHORT)
2280 rdev->wiphy.retry_short = retry_short;
2281 if (changed & WIPHY_PARAM_RETRY_LONG)
2282 rdev->wiphy.retry_long = retry_long;
2283 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2284 rdev->wiphy.frag_threshold = frag_threshold;
2285 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2286 rdev->wiphy.rts_threshold = rts_threshold;
2287 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2288 rdev->wiphy.coverage_class = coverage_class;
2289
2290 result = rdev_set_wiphy_params(rdev, changed);
2291 if (result) {
2292 rdev->wiphy.retry_short = old_retry_short;
2293 rdev->wiphy.retry_long = old_retry_long;
2294 rdev->wiphy.frag_threshold = old_frag_threshold;
2295 rdev->wiphy.rts_threshold = old_rts_threshold;
2296 rdev->wiphy.coverage_class = old_coverage_class;
2297 }
2298 }
2299 return 0;
2300 }
2301
2302 static inline u64 wdev_id(struct wireless_dev *wdev)
2303 {
2304 return (u64)wdev->identifier |
2305 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2306 }
2307
2308 static int nl80211_send_chandef(struct sk_buff *msg,
2309 const struct cfg80211_chan_def *chandef)
2310 {
2311 WARN_ON(!cfg80211_chandef_valid(chandef));
2312
2313 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2314 chandef->chan->center_freq))
2315 return -ENOBUFS;
2316 switch (chandef->width) {
2317 case NL80211_CHAN_WIDTH_20_NOHT:
2318 case NL80211_CHAN_WIDTH_20:
2319 case NL80211_CHAN_WIDTH_40:
2320 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2321 cfg80211_get_chandef_type(chandef)))
2322 return -ENOBUFS;
2323 break;
2324 default:
2325 break;
2326 }
2327 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2328 return -ENOBUFS;
2329 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2330 return -ENOBUFS;
2331 if (chandef->center_freq2 &&
2332 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2333 return -ENOBUFS;
2334 return 0;
2335 }
2336
2337 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2338 struct cfg80211_registered_device *rdev,
2339 struct wireless_dev *wdev)
2340 {
2341 struct net_device *dev = wdev->netdev;
2342 void *hdr;
2343
2344 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2345 if (!hdr)
2346 return -1;
2347
2348 if (dev &&
2349 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2350 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2351 goto nla_put_failure;
2352
2353 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2354 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2355 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2356 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2357 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2358 rdev->devlist_generation ^
2359 (cfg80211_rdev_list_generation << 2)))
2360 goto nla_put_failure;
2361
2362 if (rdev->ops->get_channel) {
2363 int ret;
2364 struct cfg80211_chan_def chandef;
2365
2366 ret = rdev_get_channel(rdev, wdev, &chandef);
2367 if (ret == 0) {
2368 if (nl80211_send_chandef(msg, &chandef))
2369 goto nla_put_failure;
2370 }
2371 }
2372
2373 if (wdev->ssid_len) {
2374 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2375 goto nla_put_failure;
2376 }
2377
2378 return genlmsg_end(msg, hdr);
2379
2380 nla_put_failure:
2381 genlmsg_cancel(msg, hdr);
2382 return -EMSGSIZE;
2383 }
2384
2385 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2386 {
2387 int wp_idx = 0;
2388 int if_idx = 0;
2389 int wp_start = cb->args[0];
2390 int if_start = cb->args[1];
2391 struct cfg80211_registered_device *rdev;
2392 struct wireless_dev *wdev;
2393
2394 rtnl_lock();
2395 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2396 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2397 continue;
2398 if (wp_idx < wp_start) {
2399 wp_idx++;
2400 continue;
2401 }
2402 if_idx = 0;
2403
2404 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2405 if (if_idx < if_start) {
2406 if_idx++;
2407 continue;
2408 }
2409 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2410 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2411 rdev, wdev) < 0) {
2412 goto out;
2413 }
2414 if_idx++;
2415 }
2416
2417 wp_idx++;
2418 }
2419 out:
2420 rtnl_unlock();
2421
2422 cb->args[0] = wp_idx;
2423 cb->args[1] = if_idx;
2424
2425 return skb->len;
2426 }
2427
2428 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2429 {
2430 struct sk_buff *msg;
2431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2432 struct wireless_dev *wdev = info->user_ptr[1];
2433
2434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2435 if (!msg)
2436 return -ENOMEM;
2437
2438 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2439 rdev, wdev) < 0) {
2440 nlmsg_free(msg);
2441 return -ENOBUFS;
2442 }
2443
2444 return genlmsg_reply(msg, info);
2445 }
2446
2447 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2448 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2449 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2450 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2451 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2452 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2453 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2454 };
2455
2456 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2457 {
2458 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2459 int flag;
2460
2461 *mntrflags = 0;
2462
2463 if (!nla)
2464 return -EINVAL;
2465
2466 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2467 nla, mntr_flags_policy))
2468 return -EINVAL;
2469
2470 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2471 if (flags[flag])
2472 *mntrflags |= (1<<flag);
2473
2474 return 0;
2475 }
2476
2477 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2478 struct net_device *netdev, u8 use_4addr,
2479 enum nl80211_iftype iftype)
2480 {
2481 if (!use_4addr) {
2482 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2483 return -EBUSY;
2484 return 0;
2485 }
2486
2487 switch (iftype) {
2488 case NL80211_IFTYPE_AP_VLAN:
2489 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2490 return 0;
2491 break;
2492 case NL80211_IFTYPE_STATION:
2493 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2494 return 0;
2495 break;
2496 default:
2497 break;
2498 }
2499
2500 return -EOPNOTSUPP;
2501 }
2502
2503 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2504 {
2505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2506 struct vif_params params;
2507 int err;
2508 enum nl80211_iftype otype, ntype;
2509 struct net_device *dev = info->user_ptr[1];
2510 u32 _flags, *flags = NULL;
2511 bool change = false;
2512
2513 memset(&params, 0, sizeof(params));
2514
2515 otype = ntype = dev->ieee80211_ptr->iftype;
2516
2517 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2518 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2519 if (otype != ntype)
2520 change = true;
2521 if (ntype > NL80211_IFTYPE_MAX)
2522 return -EINVAL;
2523 }
2524
2525 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2526 struct wireless_dev *wdev = dev->ieee80211_ptr;
2527
2528 if (ntype != NL80211_IFTYPE_MESH_POINT)
2529 return -EINVAL;
2530 if (netif_running(dev))
2531 return -EBUSY;
2532
2533 wdev_lock(wdev);
2534 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2535 IEEE80211_MAX_MESH_ID_LEN);
2536 wdev->mesh_id_up_len =
2537 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2538 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2539 wdev->mesh_id_up_len);
2540 wdev_unlock(wdev);
2541 }
2542
2543 if (info->attrs[NL80211_ATTR_4ADDR]) {
2544 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2545 change = true;
2546 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2547 if (err)
2548 return err;
2549 } else {
2550 params.use_4addr = -1;
2551 }
2552
2553 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2554 if (ntype != NL80211_IFTYPE_MONITOR)
2555 return -EINVAL;
2556 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2557 &_flags);
2558 if (err)
2559 return err;
2560
2561 flags = &_flags;
2562 change = true;
2563 }
2564
2565 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2566 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2567 return -EOPNOTSUPP;
2568
2569 if (change)
2570 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2571 else
2572 err = 0;
2573
2574 if (!err && params.use_4addr != -1)
2575 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2576
2577 return err;
2578 }
2579
2580 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2581 {
2582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2583 struct vif_params params;
2584 struct wireless_dev *wdev;
2585 struct sk_buff *msg;
2586 int err;
2587 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2588 u32 flags;
2589
2590 /* to avoid failing a new interface creation due to pending removal */
2591 cfg80211_destroy_ifaces(rdev);
2592
2593 memset(&params, 0, sizeof(params));
2594
2595 if (!info->attrs[NL80211_ATTR_IFNAME])
2596 return -EINVAL;
2597
2598 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2599 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2600 if (type > NL80211_IFTYPE_MAX)
2601 return -EINVAL;
2602 }
2603
2604 if (!rdev->ops->add_virtual_intf ||
2605 !(rdev->wiphy.interface_modes & (1 << type)))
2606 return -EOPNOTSUPP;
2607
2608 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2609 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2610 ETH_ALEN);
2611 if (!is_valid_ether_addr(params.macaddr))
2612 return -EADDRNOTAVAIL;
2613 }
2614
2615 if (info->attrs[NL80211_ATTR_4ADDR]) {
2616 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2617 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2618 if (err)
2619 return err;
2620 }
2621
2622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2623 if (!msg)
2624 return -ENOMEM;
2625
2626 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2627 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2628 &flags);
2629
2630 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2631 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2632 return -EOPNOTSUPP;
2633
2634 wdev = rdev_add_virtual_intf(rdev,
2635 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2636 type, err ? NULL : &flags, &params);
2637 if (IS_ERR(wdev)) {
2638 nlmsg_free(msg);
2639 return PTR_ERR(wdev);
2640 }
2641
2642 if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2643 wdev->owner_nlportid = info->snd_portid;
2644
2645 switch (type) {
2646 case NL80211_IFTYPE_MESH_POINT:
2647 if (!info->attrs[NL80211_ATTR_MESH_ID])
2648 break;
2649 wdev_lock(wdev);
2650 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2651 IEEE80211_MAX_MESH_ID_LEN);
2652 wdev->mesh_id_up_len =
2653 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2654 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2655 wdev->mesh_id_up_len);
2656 wdev_unlock(wdev);
2657 break;
2658 case NL80211_IFTYPE_P2P_DEVICE:
2659 /*
2660 * P2P Device doesn't have a netdev, so doesn't go
2661 * through the netdev notifier and must be added here
2662 */
2663 mutex_init(&wdev->mtx);
2664 INIT_LIST_HEAD(&wdev->event_list);
2665 spin_lock_init(&wdev->event_lock);
2666 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2667 spin_lock_init(&wdev->mgmt_registrations_lock);
2668
2669 wdev->identifier = ++rdev->wdev_id;
2670 list_add_rcu(&wdev->list, &rdev->wdev_list);
2671 rdev->devlist_generation++;
2672 break;
2673 default:
2674 break;
2675 }
2676
2677 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2678 rdev, wdev) < 0) {
2679 nlmsg_free(msg);
2680 return -ENOBUFS;
2681 }
2682
2683 return genlmsg_reply(msg, info);
2684 }
2685
2686 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2687 {
2688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2689 struct wireless_dev *wdev = info->user_ptr[1];
2690
2691 if (!rdev->ops->del_virtual_intf)
2692 return -EOPNOTSUPP;
2693
2694 /*
2695 * If we remove a wireless device without a netdev then clear
2696 * user_ptr[1] so that nl80211_post_doit won't dereference it
2697 * to check if it needs to do dev_put(). Otherwise it crashes
2698 * since the wdev has been freed, unlike with a netdev where
2699 * we need the dev_put() for the netdev to really be freed.
2700 */
2701 if (!wdev->netdev)
2702 info->user_ptr[1] = NULL;
2703
2704 return rdev_del_virtual_intf(rdev, wdev);
2705 }
2706
2707 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2708 {
2709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2710 struct net_device *dev = info->user_ptr[1];
2711 u16 noack_map;
2712
2713 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2714 return -EINVAL;
2715
2716 if (!rdev->ops->set_noack_map)
2717 return -EOPNOTSUPP;
2718
2719 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2720
2721 return rdev_set_noack_map(rdev, dev, noack_map);
2722 }
2723
2724 struct get_key_cookie {
2725 struct sk_buff *msg;
2726 int error;
2727 int idx;
2728 };
2729
2730 static void get_key_callback(void *c, struct key_params *params)
2731 {
2732 struct nlattr *key;
2733 struct get_key_cookie *cookie = c;
2734
2735 if ((params->key &&
2736 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2737 params->key_len, params->key)) ||
2738 (params->seq &&
2739 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2740 params->seq_len, params->seq)) ||
2741 (params->cipher &&
2742 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2743 params->cipher)))
2744 goto nla_put_failure;
2745
2746 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2747 if (!key)
2748 goto nla_put_failure;
2749
2750 if ((params->key &&
2751 nla_put(cookie->msg, NL80211_KEY_DATA,
2752 params->key_len, params->key)) ||
2753 (params->seq &&
2754 nla_put(cookie->msg, NL80211_KEY_SEQ,
2755 params->seq_len, params->seq)) ||
2756 (params->cipher &&
2757 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2758 params->cipher)))
2759 goto nla_put_failure;
2760
2761 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2762 goto nla_put_failure;
2763
2764 nla_nest_end(cookie->msg, key);
2765
2766 return;
2767 nla_put_failure:
2768 cookie->error = 1;
2769 }
2770
2771 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2772 {
2773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2774 int err;
2775 struct net_device *dev = info->user_ptr[1];
2776 u8 key_idx = 0;
2777 const u8 *mac_addr = NULL;
2778 bool pairwise;
2779 struct get_key_cookie cookie = {
2780 .error = 0,
2781 };
2782 void *hdr;
2783 struct sk_buff *msg;
2784
2785 if (info->attrs[NL80211_ATTR_KEY_IDX])
2786 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2787
2788 if (key_idx > 5)
2789 return -EINVAL;
2790
2791 if (info->attrs[NL80211_ATTR_MAC])
2792 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2793
2794 pairwise = !!mac_addr;
2795 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2796 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2797 if (kt >= NUM_NL80211_KEYTYPES)
2798 return -EINVAL;
2799 if (kt != NL80211_KEYTYPE_GROUP &&
2800 kt != NL80211_KEYTYPE_PAIRWISE)
2801 return -EINVAL;
2802 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2803 }
2804
2805 if (!rdev->ops->get_key)
2806 return -EOPNOTSUPP;
2807
2808 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2809 if (!msg)
2810 return -ENOMEM;
2811
2812 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2813 NL80211_CMD_NEW_KEY);
2814 if (!hdr)
2815 goto nla_put_failure;
2816
2817 cookie.msg = msg;
2818 cookie.idx = key_idx;
2819
2820 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2821 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2822 goto nla_put_failure;
2823 if (mac_addr &&
2824 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2825 goto nla_put_failure;
2826
2827 if (pairwise && mac_addr &&
2828 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2829 return -ENOENT;
2830
2831 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2832 get_key_callback);
2833
2834 if (err)
2835 goto free_msg;
2836
2837 if (cookie.error)
2838 goto nla_put_failure;
2839
2840 genlmsg_end(msg, hdr);
2841 return genlmsg_reply(msg, info);
2842
2843 nla_put_failure:
2844 err = -ENOBUFS;
2845 free_msg:
2846 nlmsg_free(msg);
2847 return err;
2848 }
2849
2850 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2851 {
2852 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2853 struct key_parse key;
2854 int err;
2855 struct net_device *dev = info->user_ptr[1];
2856
2857 err = nl80211_parse_key(info, &key);
2858 if (err)
2859 return err;
2860
2861 if (key.idx < 0)
2862 return -EINVAL;
2863
2864 /* only support setting default key */
2865 if (!key.def && !key.defmgmt)
2866 return -EINVAL;
2867
2868 wdev_lock(dev->ieee80211_ptr);
2869
2870 if (key.def) {
2871 if (!rdev->ops->set_default_key) {
2872 err = -EOPNOTSUPP;
2873 goto out;
2874 }
2875
2876 err = nl80211_key_allowed(dev->ieee80211_ptr);
2877 if (err)
2878 goto out;
2879
2880 err = rdev_set_default_key(rdev, dev, key.idx,
2881 key.def_uni, key.def_multi);
2882
2883 if (err)
2884 goto out;
2885
2886 #ifdef CONFIG_CFG80211_WEXT
2887 dev->ieee80211_ptr->wext.default_key = key.idx;
2888 #endif
2889 } else {
2890 if (key.def_uni || !key.def_multi) {
2891 err = -EINVAL;
2892 goto out;
2893 }
2894
2895 if (!rdev->ops->set_default_mgmt_key) {
2896 err = -EOPNOTSUPP;
2897 goto out;
2898 }
2899
2900 err = nl80211_key_allowed(dev->ieee80211_ptr);
2901 if (err)
2902 goto out;
2903
2904 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2905 if (err)
2906 goto out;
2907
2908 #ifdef CONFIG_CFG80211_WEXT
2909 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2910 #endif
2911 }
2912
2913 out:
2914 wdev_unlock(dev->ieee80211_ptr);
2915
2916 return err;
2917 }
2918
2919 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2920 {
2921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2922 int err;
2923 struct net_device *dev = info->user_ptr[1];
2924 struct key_parse key;
2925 const u8 *mac_addr = NULL;
2926
2927 err = nl80211_parse_key(info, &key);
2928 if (err)
2929 return err;
2930
2931 if (!key.p.key)
2932 return -EINVAL;
2933
2934 if (info->attrs[NL80211_ATTR_MAC])
2935 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2936
2937 if (key.type == -1) {
2938 if (mac_addr)
2939 key.type = NL80211_KEYTYPE_PAIRWISE;
2940 else
2941 key.type = NL80211_KEYTYPE_GROUP;
2942 }
2943
2944 /* for now */
2945 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2946 key.type != NL80211_KEYTYPE_GROUP)
2947 return -EINVAL;
2948
2949 if (!rdev->ops->add_key)
2950 return -EOPNOTSUPP;
2951
2952 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2953 key.type == NL80211_KEYTYPE_PAIRWISE,
2954 mac_addr))
2955 return -EINVAL;
2956
2957 wdev_lock(dev->ieee80211_ptr);
2958 err = nl80211_key_allowed(dev->ieee80211_ptr);
2959 if (!err)
2960 err = rdev_add_key(rdev, dev, key.idx,
2961 key.type == NL80211_KEYTYPE_PAIRWISE,
2962 mac_addr, &key.p);
2963 wdev_unlock(dev->ieee80211_ptr);
2964
2965 return err;
2966 }
2967
2968 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2969 {
2970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2971 int err;
2972 struct net_device *dev = info->user_ptr[1];
2973 u8 *mac_addr = NULL;
2974 struct key_parse key;
2975
2976 err = nl80211_parse_key(info, &key);
2977 if (err)
2978 return err;
2979
2980 if (info->attrs[NL80211_ATTR_MAC])
2981 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2982
2983 if (key.type == -1) {
2984 if (mac_addr)
2985 key.type = NL80211_KEYTYPE_PAIRWISE;
2986 else
2987 key.type = NL80211_KEYTYPE_GROUP;
2988 }
2989
2990 /* for now */
2991 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2992 key.type != NL80211_KEYTYPE_GROUP)
2993 return -EINVAL;
2994
2995 if (!rdev->ops->del_key)
2996 return -EOPNOTSUPP;
2997
2998 wdev_lock(dev->ieee80211_ptr);
2999 err = nl80211_key_allowed(dev->ieee80211_ptr);
3000
3001 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3002 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3003 err = -ENOENT;
3004
3005 if (!err)
3006 err = rdev_del_key(rdev, dev, key.idx,
3007 key.type == NL80211_KEYTYPE_PAIRWISE,
3008 mac_addr);
3009
3010 #ifdef CONFIG_CFG80211_WEXT
3011 if (!err) {
3012 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3013 dev->ieee80211_ptr->wext.default_key = -1;
3014 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3015 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3016 }
3017 #endif
3018 wdev_unlock(dev->ieee80211_ptr);
3019
3020 return err;
3021 }
3022
3023 /* This function returns an error or the number of nested attributes */
3024 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3025 {
3026 struct nlattr *attr;
3027 int n_entries = 0, tmp;
3028
3029 nla_for_each_nested(attr, nl_attr, tmp) {
3030 if (nla_len(attr) != ETH_ALEN)
3031 return -EINVAL;
3032
3033 n_entries++;
3034 }
3035
3036 return n_entries;
3037 }
3038
3039 /*
3040 * This function parses ACL information and allocates memory for ACL data.
3041 * On successful return, the calling function is responsible to free the
3042 * ACL buffer returned by this function.
3043 */
3044 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3045 struct genl_info *info)
3046 {
3047 enum nl80211_acl_policy acl_policy;
3048 struct nlattr *attr;
3049 struct cfg80211_acl_data *acl;
3050 int i = 0, n_entries, tmp;
3051
3052 if (!wiphy->max_acl_mac_addrs)
3053 return ERR_PTR(-EOPNOTSUPP);
3054
3055 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3056 return ERR_PTR(-EINVAL);
3057
3058 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3059 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3060 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3061 return ERR_PTR(-EINVAL);
3062
3063 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3064 return ERR_PTR(-EINVAL);
3065
3066 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3067 if (n_entries < 0)
3068 return ERR_PTR(n_entries);
3069
3070 if (n_entries > wiphy->max_acl_mac_addrs)
3071 return ERR_PTR(-ENOTSUPP);
3072
3073 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3074 GFP_KERNEL);
3075 if (!acl)
3076 return ERR_PTR(-ENOMEM);
3077
3078 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3079 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3080 i++;
3081 }
3082
3083 acl->n_acl_entries = n_entries;
3084 acl->acl_policy = acl_policy;
3085
3086 return acl;
3087 }
3088
3089 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3090 {
3091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3092 struct net_device *dev = info->user_ptr[1];
3093 struct cfg80211_acl_data *acl;
3094 int err;
3095
3096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3098 return -EOPNOTSUPP;
3099
3100 if (!dev->ieee80211_ptr->beacon_interval)
3101 return -EINVAL;
3102
3103 acl = parse_acl_data(&rdev->wiphy, info);
3104 if (IS_ERR(acl))
3105 return PTR_ERR(acl);
3106
3107 err = rdev_set_mac_acl(rdev, dev, acl);
3108
3109 kfree(acl);
3110
3111 return err;
3112 }
3113
3114 static int nl80211_parse_beacon(struct nlattr *attrs[],
3115 struct cfg80211_beacon_data *bcn)
3116 {
3117 bool haveinfo = false;
3118
3119 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3120 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3121 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3122 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3123 return -EINVAL;
3124
3125 memset(bcn, 0, sizeof(*bcn));
3126
3127 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3128 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3129 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3130 if (!bcn->head_len)
3131 return -EINVAL;
3132 haveinfo = true;
3133 }
3134
3135 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3136 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3137 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3138 haveinfo = true;
3139 }
3140
3141 if (!haveinfo)
3142 return -EINVAL;
3143
3144 if (attrs[NL80211_ATTR_IE]) {
3145 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3146 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3147 }
3148
3149 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3150 bcn->proberesp_ies =
3151 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3152 bcn->proberesp_ies_len =
3153 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3154 }
3155
3156 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3157 bcn->assocresp_ies =
3158 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3159 bcn->assocresp_ies_len =
3160 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3161 }
3162
3163 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3164 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3165 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3166 }
3167
3168 return 0;
3169 }
3170
3171 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3172 struct cfg80211_ap_settings *params)
3173 {
3174 struct wireless_dev *wdev;
3175 bool ret = false;
3176
3177 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3178 if (wdev->iftype != NL80211_IFTYPE_AP &&
3179 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3180 continue;
3181
3182 if (!wdev->preset_chandef.chan)
3183 continue;
3184
3185 params->chandef = wdev->preset_chandef;
3186 ret = true;
3187 break;
3188 }
3189
3190 return ret;
3191 }
3192
3193 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3194 enum nl80211_auth_type auth_type,
3195 enum nl80211_commands cmd)
3196 {
3197 if (auth_type > NL80211_AUTHTYPE_MAX)
3198 return false;
3199
3200 switch (cmd) {
3201 case NL80211_CMD_AUTHENTICATE:
3202 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3203 auth_type == NL80211_AUTHTYPE_SAE)
3204 return false;
3205 return true;
3206 case NL80211_CMD_CONNECT:
3207 case NL80211_CMD_START_AP:
3208 /* SAE not supported yet */
3209 if (auth_type == NL80211_AUTHTYPE_SAE)
3210 return false;
3211 return true;
3212 default:
3213 return false;
3214 }
3215 }
3216
3217 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3218 {
3219 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3220 struct net_device *dev = info->user_ptr[1];
3221 struct wireless_dev *wdev = dev->ieee80211_ptr;
3222 struct cfg80211_ap_settings params;
3223 int err;
3224
3225 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3226 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3227 return -EOPNOTSUPP;
3228
3229 if (!rdev->ops->start_ap)
3230 return -EOPNOTSUPP;
3231
3232 if (wdev->beacon_interval)
3233 return -EALREADY;
3234
3235 memset(&params, 0, sizeof(params));
3236
3237 /* these are required for START_AP */
3238 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3239 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3240 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3241 return -EINVAL;
3242
3243 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3244 if (err)
3245 return err;
3246
3247 params.beacon_interval =
3248 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3249 params.dtim_period =
3250 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3251
3252 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3253 if (err)
3254 return err;
3255
3256 /*
3257 * In theory, some of these attributes should be required here
3258 * but since they were not used when the command was originally
3259 * added, keep them optional for old user space programs to let
3260 * them continue to work with drivers that do not need the
3261 * additional information -- drivers must check!
3262 */
3263 if (info->attrs[NL80211_ATTR_SSID]) {
3264 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3265 params.ssid_len =
3266 nla_len(info->attrs[NL80211_ATTR_SSID]);
3267 if (params.ssid_len == 0 ||
3268 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3269 return -EINVAL;
3270 }
3271
3272 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3273 params.hidden_ssid = nla_get_u32(
3274 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3275 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3276 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3277 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3278 return -EINVAL;
3279 }
3280
3281 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3282
3283 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3284 params.auth_type = nla_get_u32(
3285 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3286 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3287 NL80211_CMD_START_AP))
3288 return -EINVAL;
3289 } else
3290 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3291
3292 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3293 NL80211_MAX_NR_CIPHER_SUITES);
3294 if (err)
3295 return err;
3296
3297 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3298 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3299 return -EOPNOTSUPP;
3300 params.inactivity_timeout = nla_get_u16(
3301 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3302 }
3303
3304 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3305 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3306 return -EINVAL;
3307 params.p2p_ctwindow =
3308 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3309 if (params.p2p_ctwindow > 127)
3310 return -EINVAL;
3311 if (params.p2p_ctwindow != 0 &&
3312 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3313 return -EINVAL;
3314 }
3315
3316 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3317 u8 tmp;
3318
3319 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3320 return -EINVAL;
3321 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3322 if (tmp > 1)
3323 return -EINVAL;
3324 params.p2p_opp_ps = tmp;
3325 if (params.p2p_opp_ps != 0 &&
3326 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3327 return -EINVAL;
3328 }
3329
3330 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3331 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3332 if (err)
3333 return err;
3334 } else if (wdev->preset_chandef.chan) {
3335 params.chandef = wdev->preset_chandef;
3336 } else if (!nl80211_get_ap_channel(rdev, &params))
3337 return -EINVAL;
3338
3339 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3340 wdev->iftype))
3341 return -EINVAL;
3342
3343 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3344 params.acl = parse_acl_data(&rdev->wiphy, info);
3345 if (IS_ERR(params.acl))
3346 return PTR_ERR(params.acl);
3347 }
3348
3349 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3350 params.smps_mode =
3351 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3352 switch (params.smps_mode) {
3353 case NL80211_SMPS_OFF:
3354 break;
3355 case NL80211_SMPS_STATIC:
3356 if (!(rdev->wiphy.features &
3357 NL80211_FEATURE_STATIC_SMPS))
3358 return -EINVAL;
3359 break;
3360 case NL80211_SMPS_DYNAMIC:
3361 if (!(rdev->wiphy.features &
3362 NL80211_FEATURE_DYNAMIC_SMPS))
3363 return -EINVAL;
3364 break;
3365 default:
3366 return -EINVAL;
3367 }
3368 } else {
3369 params.smps_mode = NL80211_SMPS_OFF;
3370 }
3371
3372 wdev_lock(wdev);
3373 err = rdev_start_ap(rdev, dev, &params);
3374 if (!err) {
3375 wdev->preset_chandef = params.chandef;
3376 wdev->beacon_interval = params.beacon_interval;
3377 wdev->chandef = params.chandef;
3378 wdev->ssid_len = params.ssid_len;
3379 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3380 }
3381 wdev_unlock(wdev);
3382
3383 kfree(params.acl);
3384
3385 return err;
3386 }
3387
3388 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3389 {
3390 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3391 struct net_device *dev = info->user_ptr[1];
3392 struct wireless_dev *wdev = dev->ieee80211_ptr;
3393 struct cfg80211_beacon_data params;
3394 int err;
3395
3396 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3397 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3398 return -EOPNOTSUPP;
3399
3400 if (!rdev->ops->change_beacon)
3401 return -EOPNOTSUPP;
3402
3403 if (!wdev->beacon_interval)
3404 return -EINVAL;
3405
3406 err = nl80211_parse_beacon(info->attrs, &params);
3407 if (err)
3408 return err;
3409
3410 wdev_lock(wdev);
3411 err = rdev_change_beacon(rdev, dev, &params);
3412 wdev_unlock(wdev);
3413
3414 return err;
3415 }
3416
3417 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3418 {
3419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3420 struct net_device *dev = info->user_ptr[1];
3421
3422 return cfg80211_stop_ap(rdev, dev, false);
3423 }
3424
3425 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3426 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3427 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3428 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3429 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3430 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3431 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3432 };
3433
3434 static int parse_station_flags(struct genl_info *info,
3435 enum nl80211_iftype iftype,
3436 struct station_parameters *params)
3437 {
3438 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3439 struct nlattr *nla;
3440 int flag;
3441
3442 /*
3443 * Try parsing the new attribute first so userspace
3444 * can specify both for older kernels.
3445 */
3446 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3447 if (nla) {
3448 struct nl80211_sta_flag_update *sta_flags;
3449
3450 sta_flags = nla_data(nla);
3451 params->sta_flags_mask = sta_flags->mask;
3452 params->sta_flags_set = sta_flags->set;
3453 params->sta_flags_set &= params->sta_flags_mask;
3454 if ((params->sta_flags_mask |
3455 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3456 return -EINVAL;
3457 return 0;
3458 }
3459
3460 /* if present, parse the old attribute */
3461
3462 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3463 if (!nla)
3464 return 0;
3465
3466 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3467 nla, sta_flags_policy))
3468 return -EINVAL;
3469
3470 /*
3471 * Only allow certain flags for interface types so that
3472 * other attributes are silently ignored. Remember that
3473 * this is backward compatibility code with old userspace
3474 * and shouldn't be hit in other cases anyway.
3475 */
3476 switch (iftype) {
3477 case NL80211_IFTYPE_AP:
3478 case NL80211_IFTYPE_AP_VLAN:
3479 case NL80211_IFTYPE_P2P_GO:
3480 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3481 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3482 BIT(NL80211_STA_FLAG_WME) |
3483 BIT(NL80211_STA_FLAG_MFP);
3484 break;
3485 case NL80211_IFTYPE_P2P_CLIENT:
3486 case NL80211_IFTYPE_STATION:
3487 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3488 BIT(NL80211_STA_FLAG_TDLS_PEER);
3489 break;
3490 case NL80211_IFTYPE_MESH_POINT:
3491 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3492 BIT(NL80211_STA_FLAG_MFP) |
3493 BIT(NL80211_STA_FLAG_AUTHORIZED);
3494 default:
3495 return -EINVAL;
3496 }
3497
3498 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3499 if (flags[flag]) {
3500 params->sta_flags_set |= (1<<flag);
3501
3502 /* no longer support new API additions in old API */
3503 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3504 return -EINVAL;
3505 }
3506 }
3507
3508 return 0;
3509 }
3510
3511 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3512 int attr)
3513 {
3514 struct nlattr *rate;
3515 u32 bitrate;
3516 u16 bitrate_compat;
3517
3518 rate = nla_nest_start(msg, attr);
3519 if (!rate)
3520 return false;
3521
3522 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3523 bitrate = cfg80211_calculate_bitrate(info);
3524 /* report 16-bit bitrate only if we can */
3525 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3526 if (bitrate > 0 &&
3527 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3528 return false;
3529 if (bitrate_compat > 0 &&
3530 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3531 return false;
3532
3533 if (info->flags & RATE_INFO_FLAGS_MCS) {
3534 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3535 return false;
3536 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3537 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3538 return false;
3539 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3540 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3541 return false;
3542 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3543 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3544 return false;
3545 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3546 return false;
3547 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3548 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3549 return false;
3550 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3551 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3552 return false;
3553 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3554 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3555 return false;
3556 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3557 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3558 return false;
3559 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3560 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3561 return false;
3562 }
3563
3564 nla_nest_end(msg, rate);
3565 return true;
3566 }
3567
3568 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3569 int id)
3570 {
3571 void *attr;
3572 int i = 0;
3573
3574 if (!mask)
3575 return true;
3576
3577 attr = nla_nest_start(msg, id);
3578 if (!attr)
3579 return false;
3580
3581 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3582 if (!(mask & BIT(i)))
3583 continue;
3584
3585 if (nla_put_u8(msg, i, signal[i]))
3586 return false;
3587 }
3588
3589 nla_nest_end(msg, attr);
3590
3591 return true;
3592 }
3593
3594 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3595 int flags,
3596 struct cfg80211_registered_device *rdev,
3597 struct net_device *dev,
3598 const u8 *mac_addr, struct station_info *sinfo)
3599 {
3600 void *hdr;
3601 struct nlattr *sinfoattr, *bss_param;
3602
3603 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3604 if (!hdr)
3605 return -1;
3606
3607 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3608 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3609 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3610 goto nla_put_failure;
3611
3612 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3613 if (!sinfoattr)
3614 goto nla_put_failure;
3615 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3616 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3617 sinfo->connected_time))
3618 goto nla_put_failure;
3619 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3620 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3621 sinfo->inactive_time))
3622 goto nla_put_failure;
3623 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3624 STATION_INFO_RX_BYTES64)) &&
3625 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3626 (u32)sinfo->rx_bytes))
3627 goto nla_put_failure;
3628 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3629 STATION_INFO_TX_BYTES64)) &&
3630 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3631 (u32)sinfo->tx_bytes))
3632 goto nla_put_failure;
3633 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3634 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3635 sinfo->rx_bytes))
3636 goto nla_put_failure;
3637 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3638 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3639 sinfo->tx_bytes))
3640 goto nla_put_failure;
3641 if ((sinfo->filled & STATION_INFO_LLID) &&
3642 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3643 goto nla_put_failure;
3644 if ((sinfo->filled & STATION_INFO_PLID) &&
3645 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3646 goto nla_put_failure;
3647 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3648 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3649 sinfo->plink_state))
3650 goto nla_put_failure;
3651 switch (rdev->wiphy.signal_type) {
3652 case CFG80211_SIGNAL_TYPE_MBM:
3653 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3654 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3655 sinfo->signal))
3656 goto nla_put_failure;
3657 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3658 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3659 sinfo->signal_avg))
3660 goto nla_put_failure;
3661 break;
3662 default:
3663 break;
3664 }
3665 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3666 if (!nl80211_put_signal(msg, sinfo->chains,
3667 sinfo->chain_signal,
3668 NL80211_STA_INFO_CHAIN_SIGNAL))
3669 goto nla_put_failure;
3670 }
3671 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3672 if (!nl80211_put_signal(msg, sinfo->chains,
3673 sinfo->chain_signal_avg,
3674 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3675 goto nla_put_failure;
3676 }
3677 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3678 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3679 NL80211_STA_INFO_TX_BITRATE))
3680 goto nla_put_failure;
3681 }
3682 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3683 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3684 NL80211_STA_INFO_RX_BITRATE))
3685 goto nla_put_failure;
3686 }
3687 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3688 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3689 sinfo->rx_packets))
3690 goto nla_put_failure;
3691 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3692 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3693 sinfo->tx_packets))
3694 goto nla_put_failure;
3695 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3696 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3697 sinfo->tx_retries))
3698 goto nla_put_failure;
3699 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3700 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3701 sinfo->tx_failed))
3702 goto nla_put_failure;
3703 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3704 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3705 sinfo->expected_throughput))
3706 goto nla_put_failure;
3707 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3708 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3709 sinfo->beacon_loss_count))
3710 goto nla_put_failure;
3711 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3712 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3713 sinfo->local_pm))
3714 goto nla_put_failure;
3715 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3716 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3717 sinfo->peer_pm))
3718 goto nla_put_failure;
3719 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3720 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3721 sinfo->nonpeer_pm))
3722 goto nla_put_failure;
3723 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3724 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3725 if (!bss_param)
3726 goto nla_put_failure;
3727
3728 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3729 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3730 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3731 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3732 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3733 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3734 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3735 sinfo->bss_param.dtim_period) ||
3736 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3737 sinfo->bss_param.beacon_interval))
3738 goto nla_put_failure;
3739
3740 nla_nest_end(msg, bss_param);
3741 }
3742 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3743 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3744 sizeof(struct nl80211_sta_flag_update),
3745 &sinfo->sta_flags))
3746 goto nla_put_failure;
3747 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3748 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3749 sinfo->t_offset))
3750 goto nla_put_failure;
3751 nla_nest_end(msg, sinfoattr);
3752
3753 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3754 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3755 sinfo->assoc_req_ies))
3756 goto nla_put_failure;
3757
3758 return genlmsg_end(msg, hdr);
3759
3760 nla_put_failure:
3761 genlmsg_cancel(msg, hdr);
3762 return -EMSGSIZE;
3763 }
3764
3765 static int nl80211_dump_station(struct sk_buff *skb,
3766 struct netlink_callback *cb)
3767 {
3768 struct station_info sinfo;
3769 struct cfg80211_registered_device *rdev;
3770 struct wireless_dev *wdev;
3771 u8 mac_addr[ETH_ALEN];
3772 int sta_idx = cb->args[2];
3773 int err;
3774
3775 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3776 if (err)
3777 return err;
3778
3779 if (!wdev->netdev) {
3780 err = -EINVAL;
3781 goto out_err;
3782 }
3783
3784 if (!rdev->ops->dump_station) {
3785 err = -EOPNOTSUPP;
3786 goto out_err;
3787 }
3788
3789 while (1) {
3790 memset(&sinfo, 0, sizeof(sinfo));
3791 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3792 mac_addr, &sinfo);
3793 if (err == -ENOENT)
3794 break;
3795 if (err)
3796 goto out_err;
3797
3798 if (nl80211_send_station(skb,
3799 NETLINK_CB(cb->skb).portid,
3800 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3801 rdev, wdev->netdev, mac_addr,
3802 &sinfo) < 0)
3803 goto out;
3804
3805 sta_idx++;
3806 }
3807
3808
3809 out:
3810 cb->args[2] = sta_idx;
3811 err = skb->len;
3812 out_err:
3813 nl80211_finish_wdev_dump(rdev);
3814
3815 return err;
3816 }
3817
3818 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3819 {
3820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3821 struct net_device *dev = info->user_ptr[1];
3822 struct station_info sinfo;
3823 struct sk_buff *msg;
3824 u8 *mac_addr = NULL;
3825 int err;
3826
3827 memset(&sinfo, 0, sizeof(sinfo));
3828
3829 if (!info->attrs[NL80211_ATTR_MAC])
3830 return -EINVAL;
3831
3832 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3833
3834 if (!rdev->ops->get_station)
3835 return -EOPNOTSUPP;
3836
3837 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3838 if (err)
3839 return err;
3840
3841 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3842 if (!msg)
3843 return -ENOMEM;
3844
3845 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3846 rdev, dev, mac_addr, &sinfo) < 0) {
3847 nlmsg_free(msg);
3848 return -ENOBUFS;
3849 }
3850
3851 return genlmsg_reply(msg, info);
3852 }
3853
3854 int cfg80211_check_station_change(struct wiphy *wiphy,
3855 struct station_parameters *params,
3856 enum cfg80211_station_type statype)
3857 {
3858 if (params->listen_interval != -1)
3859 return -EINVAL;
3860 if (params->aid &&
3861 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3862 return -EINVAL;
3863
3864 /* When you run into this, adjust the code below for the new flag */
3865 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3866
3867 switch (statype) {
3868 case CFG80211_STA_MESH_PEER_KERNEL:
3869 case CFG80211_STA_MESH_PEER_USER:
3870 /*
3871 * No ignoring the TDLS flag here -- the userspace mesh
3872 * code doesn't have the bug of including TDLS in the
3873 * mask everywhere.
3874 */
3875 if (params->sta_flags_mask &
3876 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3877 BIT(NL80211_STA_FLAG_MFP) |
3878 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3879 return -EINVAL;
3880 break;
3881 case CFG80211_STA_TDLS_PEER_SETUP:
3882 case CFG80211_STA_TDLS_PEER_ACTIVE:
3883 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3884 return -EINVAL;
3885 /* ignore since it can't change */
3886 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3887 break;
3888 default:
3889 /* disallow mesh-specific things */
3890 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3891 return -EINVAL;
3892 if (params->local_pm)
3893 return -EINVAL;
3894 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3895 return -EINVAL;
3896 }
3897
3898 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3899 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3900 /* TDLS can't be set, ... */
3901 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3902 return -EINVAL;
3903 /*
3904 * ... but don't bother the driver with it. This works around
3905 * a hostapd/wpa_supplicant issue -- it always includes the
3906 * TLDS_PEER flag in the mask even for AP mode.
3907 */
3908 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3909 }
3910
3911 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3912 /* reject other things that can't change */
3913 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3914 return -EINVAL;
3915 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3916 return -EINVAL;
3917 if (params->supported_rates)
3918 return -EINVAL;
3919 if (params->ext_capab || params->ht_capa || params->vht_capa)
3920 return -EINVAL;
3921 }
3922
3923 if (statype != CFG80211_STA_AP_CLIENT) {
3924 if (params->vlan)
3925 return -EINVAL;
3926 }
3927
3928 switch (statype) {
3929 case CFG80211_STA_AP_MLME_CLIENT:
3930 /* Use this only for authorizing/unauthorizing a station */
3931 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3932 return -EOPNOTSUPP;
3933 break;
3934 case CFG80211_STA_AP_CLIENT:
3935 /* accept only the listed bits */
3936 if (params->sta_flags_mask &
3937 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3938 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3939 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3940 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3941 BIT(NL80211_STA_FLAG_WME) |
3942 BIT(NL80211_STA_FLAG_MFP)))
3943 return -EINVAL;
3944
3945 /* but authenticated/associated only if driver handles it */
3946 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3947 params->sta_flags_mask &
3948 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3949 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3950 return -EINVAL;
3951 break;
3952 case CFG80211_STA_IBSS:
3953 case CFG80211_STA_AP_STA:
3954 /* reject any changes other than AUTHORIZED */
3955 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3956 return -EINVAL;
3957 break;
3958 case CFG80211_STA_TDLS_PEER_SETUP:
3959 /* reject any changes other than AUTHORIZED or WME */
3960 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3961 BIT(NL80211_STA_FLAG_WME)))
3962 return -EINVAL;
3963 /* force (at least) rates when authorizing */
3964 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3965 !params->supported_rates)
3966 return -EINVAL;
3967 break;
3968 case CFG80211_STA_TDLS_PEER_ACTIVE:
3969 /* reject any changes */
3970 return -EINVAL;
3971 case CFG80211_STA_MESH_PEER_KERNEL:
3972 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3973 return -EINVAL;
3974 break;
3975 case CFG80211_STA_MESH_PEER_USER:
3976 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3977 return -EINVAL;
3978 break;
3979 }
3980
3981 return 0;
3982 }
3983 EXPORT_SYMBOL(cfg80211_check_station_change);
3984
3985 /*
3986 * Get vlan interface making sure it is running and on the right wiphy.
3987 */
3988 static struct net_device *get_vlan(struct genl_info *info,
3989 struct cfg80211_registered_device *rdev)
3990 {
3991 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3992 struct net_device *v;
3993 int ret;
3994
3995 if (!vlanattr)
3996 return NULL;
3997
3998 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3999 if (!v)
4000 return ERR_PTR(-ENODEV);
4001
4002 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4003 ret = -EINVAL;
4004 goto error;
4005 }
4006
4007 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4008 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4009 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4010 ret = -EINVAL;
4011 goto error;
4012 }
4013
4014 if (!netif_running(v)) {
4015 ret = -ENETDOWN;
4016 goto error;
4017 }
4018
4019 return v;
4020 error:
4021 dev_put(v);
4022 return ERR_PTR(ret);
4023 }
4024
4025 static const struct nla_policy
4026 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4027 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4028 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4029 };
4030
4031 static int nl80211_parse_sta_wme(struct genl_info *info,
4032 struct station_parameters *params)
4033 {
4034 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4035 struct nlattr *nla;
4036 int err;
4037
4038 /* parse WME attributes if present */
4039 if (!info->attrs[NL80211_ATTR_STA_WME])
4040 return 0;
4041
4042 nla = info->attrs[NL80211_ATTR_STA_WME];
4043 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4044 nl80211_sta_wme_policy);
4045 if (err)
4046 return err;
4047
4048 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4049 params->uapsd_queues = nla_get_u8(
4050 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4051 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4052 return -EINVAL;
4053
4054 if (tb[NL80211_STA_WME_MAX_SP])
4055 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4056
4057 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4058 return -EINVAL;
4059
4060 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4061
4062 return 0;
4063 }
4064
4065 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4066 struct station_parameters *params)
4067 {
4068 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4069 params->supported_channels =
4070 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4071 params->supported_channels_len =
4072 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4073 /*
4074 * Need to include at least one (first channel, number of
4075 * channels) tuple for each subband, and must have proper
4076 * tuples for the rest of the data as well.
4077 */
4078 if (params->supported_channels_len < 2)
4079 return -EINVAL;
4080 if (params->supported_channels_len % 2)
4081 return -EINVAL;
4082 }
4083
4084 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4085 params->supported_oper_classes =
4086 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4087 params->supported_oper_classes_len =
4088 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4089 /*
4090 * The value of the Length field of the Supported Operating
4091 * Classes element is between 2 and 253.
4092 */
4093 if (params->supported_oper_classes_len < 2 ||
4094 params->supported_oper_classes_len > 253)
4095 return -EINVAL;
4096 }
4097 return 0;
4098 }
4099
4100 static int nl80211_set_station_tdls(struct genl_info *info,
4101 struct station_parameters *params)
4102 {
4103 int err;
4104 /* Dummy STA entry gets updated once the peer capabilities are known */
4105 if (info->attrs[NL80211_ATTR_PEER_AID])
4106 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4107 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4108 params->ht_capa =
4109 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4110 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4111 params->vht_capa =
4112 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4113
4114 err = nl80211_parse_sta_channel_info(info, params);
4115 if (err)
4116 return err;
4117
4118 return nl80211_parse_sta_wme(info, params);
4119 }
4120
4121 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4122 {
4123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4124 struct net_device *dev = info->user_ptr[1];
4125 struct station_parameters params;
4126 u8 *mac_addr;
4127 int err;
4128
4129 memset(&params, 0, sizeof(params));
4130
4131 params.listen_interval = -1;
4132
4133 if (!rdev->ops->change_station)
4134 return -EOPNOTSUPP;
4135
4136 if (info->attrs[NL80211_ATTR_STA_AID])
4137 return -EINVAL;
4138
4139 if (!info->attrs[NL80211_ATTR_MAC])
4140 return -EINVAL;
4141
4142 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4143
4144 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4145 params.supported_rates =
4146 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4147 params.supported_rates_len =
4148 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4149 }
4150
4151 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4152 params.capability =
4153 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4154 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4155 }
4156
4157 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4158 params.ext_capab =
4159 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4160 params.ext_capab_len =
4161 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4162 }
4163
4164 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4165 return -EINVAL;
4166
4167 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4168 return -EINVAL;
4169
4170 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4171 params.plink_action =
4172 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4173 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4174 return -EINVAL;
4175 }
4176
4177 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4178 params.plink_state =
4179 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4180 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4181 return -EINVAL;
4182 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4183 }
4184
4185 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4186 enum nl80211_mesh_power_mode pm = nla_get_u32(
4187 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4188
4189 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4190 pm > NL80211_MESH_POWER_MAX)
4191 return -EINVAL;
4192
4193 params.local_pm = pm;
4194 }
4195
4196 /* Include parameters for TDLS peer (will check later) */
4197 err = nl80211_set_station_tdls(info, &params);
4198 if (err)
4199 return err;
4200
4201 params.vlan = get_vlan(info, rdev);
4202 if (IS_ERR(params.vlan))
4203 return PTR_ERR(params.vlan);
4204
4205 switch (dev->ieee80211_ptr->iftype) {
4206 case NL80211_IFTYPE_AP:
4207 case NL80211_IFTYPE_AP_VLAN:
4208 case NL80211_IFTYPE_P2P_GO:
4209 case NL80211_IFTYPE_P2P_CLIENT:
4210 case NL80211_IFTYPE_STATION:
4211 case NL80211_IFTYPE_ADHOC:
4212 case NL80211_IFTYPE_MESH_POINT:
4213 break;
4214 default:
4215 err = -EOPNOTSUPP;
4216 goto out_put_vlan;
4217 }
4218
4219 /* driver will call cfg80211_check_station_change() */
4220 err = rdev_change_station(rdev, dev, mac_addr, &params);
4221
4222 out_put_vlan:
4223 if (params.vlan)
4224 dev_put(params.vlan);
4225
4226 return err;
4227 }
4228
4229 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4230 {
4231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4232 int err;
4233 struct net_device *dev = info->user_ptr[1];
4234 struct station_parameters params;
4235 u8 *mac_addr = NULL;
4236
4237 memset(&params, 0, sizeof(params));
4238
4239 if (!rdev->ops->add_station)
4240 return -EOPNOTSUPP;
4241
4242 if (!info->attrs[NL80211_ATTR_MAC])
4243 return -EINVAL;
4244
4245 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4246 return -EINVAL;
4247
4248 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4249 return -EINVAL;
4250
4251 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4252 !info->attrs[NL80211_ATTR_PEER_AID])
4253 return -EINVAL;
4254
4255 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4256 params.supported_rates =
4257 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4258 params.supported_rates_len =
4259 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4260 params.listen_interval =
4261 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4262
4263 if (info->attrs[NL80211_ATTR_PEER_AID])
4264 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4265 else
4266 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4267 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4268 return -EINVAL;
4269
4270 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4271 params.capability =
4272 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4273 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4274 }
4275
4276 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4277 params.ext_capab =
4278 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4279 params.ext_capab_len =
4280 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4281 }
4282
4283 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4284 params.ht_capa =
4285 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4286
4287 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4288 params.vht_capa =
4289 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4290
4291 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4292 params.opmode_notif_used = true;
4293 params.opmode_notif =
4294 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4295 }
4296
4297 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4298 params.plink_action =
4299 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4300 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4301 return -EINVAL;
4302 }
4303
4304 err = nl80211_parse_sta_channel_info(info, &params);
4305 if (err)
4306 return err;
4307
4308 err = nl80211_parse_sta_wme(info, &params);
4309 if (err)
4310 return err;
4311
4312 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4313 return -EINVAL;
4314
4315 /* When you run into this, adjust the code below for the new flag */
4316 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4317
4318 switch (dev->ieee80211_ptr->iftype) {
4319 case NL80211_IFTYPE_AP:
4320 case NL80211_IFTYPE_AP_VLAN:
4321 case NL80211_IFTYPE_P2P_GO:
4322 /* ignore WME attributes if iface/sta is not capable */
4323 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4324 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4325 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4326
4327 /* TDLS peers cannot be added */
4328 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4329 info->attrs[NL80211_ATTR_PEER_AID])
4330 return -EINVAL;
4331 /* but don't bother the driver with it */
4332 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4333
4334 /* allow authenticated/associated only if driver handles it */
4335 if (!(rdev->wiphy.features &
4336 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4337 params.sta_flags_mask &
4338 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4339 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4340 return -EINVAL;
4341
4342 /* must be last in here for error handling */
4343 params.vlan = get_vlan(info, rdev);
4344 if (IS_ERR(params.vlan))
4345 return PTR_ERR(params.vlan);
4346 break;
4347 case NL80211_IFTYPE_MESH_POINT:
4348 /* ignore uAPSD data */
4349 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4350
4351 /* associated is disallowed */
4352 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4353 return -EINVAL;
4354 /* TDLS peers cannot be added */
4355 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4356 info->attrs[NL80211_ATTR_PEER_AID])
4357 return -EINVAL;
4358 break;
4359 case NL80211_IFTYPE_STATION:
4360 case NL80211_IFTYPE_P2P_CLIENT:
4361 /* ignore uAPSD data */
4362 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4363
4364 /* these are disallowed */
4365 if (params.sta_flags_mask &
4366 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4367 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4368 return -EINVAL;
4369 /* Only TDLS peers can be added */
4370 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4371 return -EINVAL;
4372 /* Can only add if TDLS ... */
4373 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4374 return -EOPNOTSUPP;
4375 /* ... with external setup is supported */
4376 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4377 return -EOPNOTSUPP;
4378 /*
4379 * Older wpa_supplicant versions always mark the TDLS peer
4380 * as authorized, but it shouldn't yet be.
4381 */
4382 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4383 break;
4384 default:
4385 return -EOPNOTSUPP;
4386 }
4387
4388 /* be aware of params.vlan when changing code here */
4389
4390 err = rdev_add_station(rdev, dev, mac_addr, &params);
4391
4392 if (params.vlan)
4393 dev_put(params.vlan);
4394 return err;
4395 }
4396
4397 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4398 {
4399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4400 struct net_device *dev = info->user_ptr[1];
4401 u8 *mac_addr = NULL;
4402
4403 if (info->attrs[NL80211_ATTR_MAC])
4404 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4405
4406 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4407 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4408 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4409 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4410 return -EINVAL;
4411
4412 if (!rdev->ops->del_station)
4413 return -EOPNOTSUPP;
4414
4415 return rdev_del_station(rdev, dev, mac_addr);
4416 }
4417
4418 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4419 int flags, struct net_device *dev,
4420 u8 *dst, u8 *next_hop,
4421 struct mpath_info *pinfo)
4422 {
4423 void *hdr;
4424 struct nlattr *pinfoattr;
4425
4426 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4427 if (!hdr)
4428 return -1;
4429
4430 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4431 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4432 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4433 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4434 goto nla_put_failure;
4435
4436 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4437 if (!pinfoattr)
4438 goto nla_put_failure;
4439 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4440 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4441 pinfo->frame_qlen))
4442 goto nla_put_failure;
4443 if (((pinfo->filled & MPATH_INFO_SN) &&
4444 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4445 ((pinfo->filled & MPATH_INFO_METRIC) &&
4446 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4447 pinfo->metric)) ||
4448 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4449 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4450 pinfo->exptime)) ||
4451 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4452 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4453 pinfo->flags)) ||
4454 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4455 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4456 pinfo->discovery_timeout)) ||
4457 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4458 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4459 pinfo->discovery_retries)))
4460 goto nla_put_failure;
4461
4462 nla_nest_end(msg, pinfoattr);
4463
4464 return genlmsg_end(msg, hdr);
4465
4466 nla_put_failure:
4467 genlmsg_cancel(msg, hdr);
4468 return -EMSGSIZE;
4469 }
4470
4471 static int nl80211_dump_mpath(struct sk_buff *skb,
4472 struct netlink_callback *cb)
4473 {
4474 struct mpath_info pinfo;
4475 struct cfg80211_registered_device *rdev;
4476 struct wireless_dev *wdev;
4477 u8 dst[ETH_ALEN];
4478 u8 next_hop[ETH_ALEN];
4479 int path_idx = cb->args[2];
4480 int err;
4481
4482 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4483 if (err)
4484 return err;
4485
4486 if (!rdev->ops->dump_mpath) {
4487 err = -EOPNOTSUPP;
4488 goto out_err;
4489 }
4490
4491 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4492 err = -EOPNOTSUPP;
4493 goto out_err;
4494 }
4495
4496 while (1) {
4497 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4498 next_hop, &pinfo);
4499 if (err == -ENOENT)
4500 break;
4501 if (err)
4502 goto out_err;
4503
4504 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4505 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4506 wdev->netdev, dst, next_hop,
4507 &pinfo) < 0)
4508 goto out;
4509
4510 path_idx++;
4511 }
4512
4513
4514 out:
4515 cb->args[2] = path_idx;
4516 err = skb->len;
4517 out_err:
4518 nl80211_finish_wdev_dump(rdev);
4519 return err;
4520 }
4521
4522 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4523 {
4524 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4525 int err;
4526 struct net_device *dev = info->user_ptr[1];
4527 struct mpath_info pinfo;
4528 struct sk_buff *msg;
4529 u8 *dst = NULL;
4530 u8 next_hop[ETH_ALEN];
4531
4532 memset(&pinfo, 0, sizeof(pinfo));
4533
4534 if (!info->attrs[NL80211_ATTR_MAC])
4535 return -EINVAL;
4536
4537 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4538
4539 if (!rdev->ops->get_mpath)
4540 return -EOPNOTSUPP;
4541
4542 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4543 return -EOPNOTSUPP;
4544
4545 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4546 if (err)
4547 return err;
4548
4549 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4550 if (!msg)
4551 return -ENOMEM;
4552
4553 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4554 dev, dst, next_hop, &pinfo) < 0) {
4555 nlmsg_free(msg);
4556 return -ENOBUFS;
4557 }
4558
4559 return genlmsg_reply(msg, info);
4560 }
4561
4562 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4563 {
4564 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4565 struct net_device *dev = info->user_ptr[1];
4566 u8 *dst = NULL;
4567 u8 *next_hop = NULL;
4568
4569 if (!info->attrs[NL80211_ATTR_MAC])
4570 return -EINVAL;
4571
4572 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4573 return -EINVAL;
4574
4575 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4576 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4577
4578 if (!rdev->ops->change_mpath)
4579 return -EOPNOTSUPP;
4580
4581 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4582 return -EOPNOTSUPP;
4583
4584 return rdev_change_mpath(rdev, dev, dst, next_hop);
4585 }
4586
4587 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4588 {
4589 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4590 struct net_device *dev = info->user_ptr[1];
4591 u8 *dst = NULL;
4592 u8 *next_hop = NULL;
4593
4594 if (!info->attrs[NL80211_ATTR_MAC])
4595 return -EINVAL;
4596
4597 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4598 return -EINVAL;
4599
4600 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4601 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4602
4603 if (!rdev->ops->add_mpath)
4604 return -EOPNOTSUPP;
4605
4606 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4607 return -EOPNOTSUPP;
4608
4609 return rdev_add_mpath(rdev, dev, dst, next_hop);
4610 }
4611
4612 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4613 {
4614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4615 struct net_device *dev = info->user_ptr[1];
4616 u8 *dst = NULL;
4617
4618 if (info->attrs[NL80211_ATTR_MAC])
4619 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4620
4621 if (!rdev->ops->del_mpath)
4622 return -EOPNOTSUPP;
4623
4624 return rdev_del_mpath(rdev, dev, dst);
4625 }
4626
4627 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4628 {
4629 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4630 struct net_device *dev = info->user_ptr[1];
4631 struct wireless_dev *wdev = dev->ieee80211_ptr;
4632 struct bss_parameters params;
4633 int err;
4634
4635 memset(&params, 0, sizeof(params));
4636 /* default to not changing parameters */
4637 params.use_cts_prot = -1;
4638 params.use_short_preamble = -1;
4639 params.use_short_slot_time = -1;
4640 params.ap_isolate = -1;
4641 params.ht_opmode = -1;
4642 params.p2p_ctwindow = -1;
4643 params.p2p_opp_ps = -1;
4644
4645 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4646 params.use_cts_prot =
4647 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4648 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4649 params.use_short_preamble =
4650 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4651 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4652 params.use_short_slot_time =
4653 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4654 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4655 params.basic_rates =
4656 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4657 params.basic_rates_len =
4658 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4659 }
4660 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4661 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4662 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4663 params.ht_opmode =
4664 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4665
4666 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4667 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4668 return -EINVAL;
4669 params.p2p_ctwindow =
4670 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4671 if (params.p2p_ctwindow < 0)
4672 return -EINVAL;
4673 if (params.p2p_ctwindow != 0 &&
4674 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4675 return -EINVAL;
4676 }
4677
4678 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4679 u8 tmp;
4680
4681 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4682 return -EINVAL;
4683 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4684 if (tmp > 1)
4685 return -EINVAL;
4686 params.p2p_opp_ps = tmp;
4687 if (params.p2p_opp_ps &&
4688 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4689 return -EINVAL;
4690 }
4691
4692 if (!rdev->ops->change_bss)
4693 return -EOPNOTSUPP;
4694
4695 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4696 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4697 return -EOPNOTSUPP;
4698
4699 wdev_lock(wdev);
4700 err = rdev_change_bss(rdev, dev, &params);
4701 wdev_unlock(wdev);
4702
4703 return err;
4704 }
4705
4706 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4707 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4708 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4709 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4710 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4711 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4712 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4713 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4714 };
4715
4716 static int parse_reg_rule(struct nlattr *tb[],
4717 struct ieee80211_reg_rule *reg_rule)
4718 {
4719 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4720 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4721
4722 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4723 return -EINVAL;
4724 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4725 return -EINVAL;
4726 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4727 return -EINVAL;
4728 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4729 return -EINVAL;
4730 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4731 return -EINVAL;
4732
4733 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4734
4735 freq_range->start_freq_khz =
4736 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4737 freq_range->end_freq_khz =
4738 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4739 freq_range->max_bandwidth_khz =
4740 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4741
4742 power_rule->max_eirp =
4743 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4744
4745 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4746 power_rule->max_antenna_gain =
4747 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4748
4749 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4750 reg_rule->dfs_cac_ms =
4751 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4752
4753 return 0;
4754 }
4755
4756 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4757 {
4758 char *data = NULL;
4759 enum nl80211_user_reg_hint_type user_reg_hint_type;
4760
4761 /*
4762 * You should only get this when cfg80211 hasn't yet initialized
4763 * completely when built-in to the kernel right between the time
4764 * window between nl80211_init() and regulatory_init(), if that is
4765 * even possible.
4766 */
4767 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4768 return -EINPROGRESS;
4769
4770 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4771 user_reg_hint_type =
4772 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4773 else
4774 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4775
4776 switch (user_reg_hint_type) {
4777 case NL80211_USER_REG_HINT_USER:
4778 case NL80211_USER_REG_HINT_CELL_BASE:
4779 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4780 return -EINVAL;
4781
4782 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4783 return regulatory_hint_user(data, user_reg_hint_type);
4784 case NL80211_USER_REG_HINT_INDOOR:
4785 return regulatory_hint_indoor_user();
4786 default:
4787 return -EINVAL;
4788 }
4789 }
4790
4791 static int nl80211_get_mesh_config(struct sk_buff *skb,
4792 struct genl_info *info)
4793 {
4794 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4795 struct net_device *dev = info->user_ptr[1];
4796 struct wireless_dev *wdev = dev->ieee80211_ptr;
4797 struct mesh_config cur_params;
4798 int err = 0;
4799 void *hdr;
4800 struct nlattr *pinfoattr;
4801 struct sk_buff *msg;
4802
4803 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4804 return -EOPNOTSUPP;
4805
4806 if (!rdev->ops->get_mesh_config)
4807 return -EOPNOTSUPP;
4808
4809 wdev_lock(wdev);
4810 /* If not connected, get default parameters */
4811 if (!wdev->mesh_id_len)
4812 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4813 else
4814 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4815 wdev_unlock(wdev);
4816
4817 if (err)
4818 return err;
4819
4820 /* Draw up a netlink message to send back */
4821 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4822 if (!msg)
4823 return -ENOMEM;
4824 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4825 NL80211_CMD_GET_MESH_CONFIG);
4826 if (!hdr)
4827 goto out;
4828 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4829 if (!pinfoattr)
4830 goto nla_put_failure;
4831 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4832 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4833 cur_params.dot11MeshRetryTimeout) ||
4834 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4835 cur_params.dot11MeshConfirmTimeout) ||
4836 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4837 cur_params.dot11MeshHoldingTimeout) ||
4838 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4839 cur_params.dot11MeshMaxPeerLinks) ||
4840 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4841 cur_params.dot11MeshMaxRetries) ||
4842 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4843 cur_params.dot11MeshTTL) ||
4844 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4845 cur_params.element_ttl) ||
4846 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4847 cur_params.auto_open_plinks) ||
4848 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4849 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4850 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4851 cur_params.dot11MeshHWMPmaxPREQretries) ||
4852 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4853 cur_params.path_refresh_time) ||
4854 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4855 cur_params.min_discovery_timeout) ||
4856 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4857 cur_params.dot11MeshHWMPactivePathTimeout) ||
4858 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4859 cur_params.dot11MeshHWMPpreqMinInterval) ||
4860 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4861 cur_params.dot11MeshHWMPperrMinInterval) ||
4862 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4863 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4864 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4865 cur_params.dot11MeshHWMPRootMode) ||
4866 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4867 cur_params.dot11MeshHWMPRannInterval) ||
4868 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4869 cur_params.dot11MeshGateAnnouncementProtocol) ||
4870 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4871 cur_params.dot11MeshForwarding) ||
4872 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4873 cur_params.rssi_threshold) ||
4874 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4875 cur_params.ht_opmode) ||
4876 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4877 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4878 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4879 cur_params.dot11MeshHWMProotInterval) ||
4880 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4881 cur_params.dot11MeshHWMPconfirmationInterval) ||
4882 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4883 cur_params.power_mode) ||
4884 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4885 cur_params.dot11MeshAwakeWindowDuration) ||
4886 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4887 cur_params.plink_timeout))
4888 goto nla_put_failure;
4889 nla_nest_end(msg, pinfoattr);
4890 genlmsg_end(msg, hdr);
4891 return genlmsg_reply(msg, info);
4892
4893 nla_put_failure:
4894 genlmsg_cancel(msg, hdr);
4895 out:
4896 nlmsg_free(msg);
4897 return -ENOBUFS;
4898 }
4899
4900 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4901 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4902 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4903 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4904 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4905 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4906 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4907 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4908 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4909 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4910 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4911 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4912 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4913 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4914 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4915 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4916 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4917 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4918 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4919 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4920 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4921 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4922 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4923 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4924 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4925 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4926 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4927 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4928 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4929 };
4930
4931 static const struct nla_policy
4932 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4933 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4934 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4935 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4936 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4937 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4938 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4939 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4940 .len = IEEE80211_MAX_DATA_LEN },
4941 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4942 };
4943
4944 static int nl80211_parse_mesh_config(struct genl_info *info,
4945 struct mesh_config *cfg,
4946 u32 *mask_out)
4947 {
4948 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4949 u32 mask = 0;
4950
4951 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4952 do { \
4953 if (tb[attr]) { \
4954 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4955 return -EINVAL; \
4956 cfg->param = fn(tb[attr]); \
4957 mask |= (1 << (attr - 1)); \
4958 } \
4959 } while (0)
4960
4961
4962 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4963 return -EINVAL;
4964 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4965 info->attrs[NL80211_ATTR_MESH_CONFIG],
4966 nl80211_meshconf_params_policy))
4967 return -EINVAL;
4968
4969 /* This makes sure that there aren't more than 32 mesh config
4970 * parameters (otherwise our bitfield scheme would not work.) */
4971 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4972
4973 /* Fill in the params struct */
4974 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4975 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4976 nla_get_u16);
4977 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4978 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4979 nla_get_u16);
4980 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4981 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4982 nla_get_u16);
4983 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4984 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4985 nla_get_u16);
4986 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4987 mask, NL80211_MESHCONF_MAX_RETRIES,
4988 nla_get_u8);
4989 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4990 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4991 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4992 mask, NL80211_MESHCONF_ELEMENT_TTL,
4993 nla_get_u8);
4994 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4995 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4996 nla_get_u8);
4997 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4998 1, 255, mask,
4999 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5000 nla_get_u32);
5001 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5002 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5003 nla_get_u8);
5004 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5005 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5006 nla_get_u32);
5007 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5008 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5009 nla_get_u16);
5010 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5011 1, 65535, mask,
5012 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5013 nla_get_u32);
5014 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5015 1, 65535, mask,
5016 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5017 nla_get_u16);
5018 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5019 1, 65535, mask,
5020 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5021 nla_get_u16);
5022 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5023 dot11MeshHWMPnetDiameterTraversalTime,
5024 1, 65535, mask,
5025 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5026 nla_get_u16);
5027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5028 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5029 nla_get_u8);
5030 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5031 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5032 nla_get_u16);
5033 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5034 dot11MeshGateAnnouncementProtocol, 0, 1,
5035 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5036 nla_get_u8);
5037 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5038 mask, NL80211_MESHCONF_FORWARDING,
5039 nla_get_u8);
5040 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5041 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5042 nla_get_s32);
5043 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5044 mask, NL80211_MESHCONF_HT_OPMODE,
5045 nla_get_u16);
5046 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5047 1, 65535, mask,
5048 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5049 nla_get_u32);
5050 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5051 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5052 nla_get_u16);
5053 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5054 dot11MeshHWMPconfirmationInterval,
5055 1, 65535, mask,
5056 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5057 nla_get_u16);
5058 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5059 NL80211_MESH_POWER_ACTIVE,
5060 NL80211_MESH_POWER_MAX,
5061 mask, NL80211_MESHCONF_POWER_MODE,
5062 nla_get_u32);
5063 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5064 0, 65535, mask,
5065 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5066 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5067 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5068 nla_get_u32);
5069 if (mask_out)
5070 *mask_out = mask;
5071
5072 return 0;
5073
5074 #undef FILL_IN_MESH_PARAM_IF_SET
5075 }
5076
5077 static int nl80211_parse_mesh_setup(struct genl_info *info,
5078 struct mesh_setup *setup)
5079 {
5080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5081 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5082
5083 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5084 return -EINVAL;
5085 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5086 info->attrs[NL80211_ATTR_MESH_SETUP],
5087 nl80211_mesh_setup_params_policy))
5088 return -EINVAL;
5089
5090 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5091 setup->sync_method =
5092 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5093 IEEE80211_SYNC_METHOD_VENDOR :
5094 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5095
5096 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5097 setup->path_sel_proto =
5098 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5099 IEEE80211_PATH_PROTOCOL_VENDOR :
5100 IEEE80211_PATH_PROTOCOL_HWMP;
5101
5102 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5103 setup->path_metric =
5104 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5105 IEEE80211_PATH_METRIC_VENDOR :
5106 IEEE80211_PATH_METRIC_AIRTIME;
5107
5108
5109 if (tb[NL80211_MESH_SETUP_IE]) {
5110 struct nlattr *ieattr =
5111 tb[NL80211_MESH_SETUP_IE];
5112 if (!is_valid_ie_attr(ieattr))
5113 return -EINVAL;
5114 setup->ie = nla_data(ieattr);
5115 setup->ie_len = nla_len(ieattr);
5116 }
5117 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5118 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5119 return -EINVAL;
5120 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5121 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5122 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5123 if (setup->is_secure)
5124 setup->user_mpm = true;
5125
5126 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5127 if (!setup->user_mpm)
5128 return -EINVAL;
5129 setup->auth_id =
5130 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5131 }
5132
5133 return 0;
5134 }
5135
5136 static int nl80211_update_mesh_config(struct sk_buff *skb,
5137 struct genl_info *info)
5138 {
5139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5140 struct net_device *dev = info->user_ptr[1];
5141 struct wireless_dev *wdev = dev->ieee80211_ptr;
5142 struct mesh_config cfg;
5143 u32 mask;
5144 int err;
5145
5146 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5147 return -EOPNOTSUPP;
5148
5149 if (!rdev->ops->update_mesh_config)
5150 return -EOPNOTSUPP;
5151
5152 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5153 if (err)
5154 return err;
5155
5156 wdev_lock(wdev);
5157 if (!wdev->mesh_id_len)
5158 err = -ENOLINK;
5159
5160 if (!err)
5161 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5162
5163 wdev_unlock(wdev);
5164
5165 return err;
5166 }
5167
5168 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5169 {
5170 const struct ieee80211_regdomain *regdom;
5171 struct sk_buff *msg;
5172 void *hdr = NULL;
5173 struct nlattr *nl_reg_rules;
5174 unsigned int i;
5175
5176 if (!cfg80211_regdomain)
5177 return -EINVAL;
5178
5179 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5180 if (!msg)
5181 return -ENOBUFS;
5182
5183 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5184 NL80211_CMD_GET_REG);
5185 if (!hdr)
5186 goto put_failure;
5187
5188 if (reg_last_request_cell_base() &&
5189 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5190 NL80211_USER_REG_HINT_CELL_BASE))
5191 goto nla_put_failure;
5192
5193 rcu_read_lock();
5194 regdom = rcu_dereference(cfg80211_regdomain);
5195
5196 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5197 (regdom->dfs_region &&
5198 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5199 goto nla_put_failure_rcu;
5200
5201 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5202 if (!nl_reg_rules)
5203 goto nla_put_failure_rcu;
5204
5205 for (i = 0; i < regdom->n_reg_rules; i++) {
5206 struct nlattr *nl_reg_rule;
5207 const struct ieee80211_reg_rule *reg_rule;
5208 const struct ieee80211_freq_range *freq_range;
5209 const struct ieee80211_power_rule *power_rule;
5210 unsigned int max_bandwidth_khz;
5211
5212 reg_rule = &regdom->reg_rules[i];
5213 freq_range = &reg_rule->freq_range;
5214 power_rule = &reg_rule->power_rule;
5215
5216 nl_reg_rule = nla_nest_start(msg, i);
5217 if (!nl_reg_rule)
5218 goto nla_put_failure_rcu;
5219
5220 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5221 if (!max_bandwidth_khz)
5222 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5223 reg_rule);
5224
5225 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5226 reg_rule->flags) ||
5227 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5228 freq_range->start_freq_khz) ||
5229 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5230 freq_range->end_freq_khz) ||
5231 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5232 max_bandwidth_khz) ||
5233 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5234 power_rule->max_antenna_gain) ||
5235 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5236 power_rule->max_eirp) ||
5237 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5238 reg_rule->dfs_cac_ms))
5239 goto nla_put_failure_rcu;
5240
5241 nla_nest_end(msg, nl_reg_rule);
5242 }
5243 rcu_read_unlock();
5244
5245 nla_nest_end(msg, nl_reg_rules);
5246
5247 genlmsg_end(msg, hdr);
5248 return genlmsg_reply(msg, info);
5249
5250 nla_put_failure_rcu:
5251 rcu_read_unlock();
5252 nla_put_failure:
5253 genlmsg_cancel(msg, hdr);
5254 put_failure:
5255 nlmsg_free(msg);
5256 return -EMSGSIZE;
5257 }
5258
5259 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5260 {
5261 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5262 struct nlattr *nl_reg_rule;
5263 char *alpha2 = NULL;
5264 int rem_reg_rules = 0, r = 0;
5265 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5266 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5267 struct ieee80211_regdomain *rd = NULL;
5268
5269 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5270 return -EINVAL;
5271
5272 if (!info->attrs[NL80211_ATTR_REG_RULES])
5273 return -EINVAL;
5274
5275 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5276
5277 if (info->attrs[NL80211_ATTR_DFS_REGION])
5278 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5279
5280 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5281 rem_reg_rules) {
5282 num_rules++;
5283 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5284 return -EINVAL;
5285 }
5286
5287 if (!reg_is_valid_request(alpha2))
5288 return -EINVAL;
5289
5290 size_of_regd = sizeof(struct ieee80211_regdomain) +
5291 num_rules * sizeof(struct ieee80211_reg_rule);
5292
5293 rd = kzalloc(size_of_regd, GFP_KERNEL);
5294 if (!rd)
5295 return -ENOMEM;
5296
5297 rd->n_reg_rules = num_rules;
5298 rd->alpha2[0] = alpha2[0];
5299 rd->alpha2[1] = alpha2[1];
5300
5301 /*
5302 * Disable DFS master mode if the DFS region was
5303 * not supported or known on this kernel.
5304 */
5305 if (reg_supported_dfs_region(dfs_region))
5306 rd->dfs_region = dfs_region;
5307
5308 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5309 rem_reg_rules) {
5310 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5311 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5312 reg_rule_policy);
5313 if (r)
5314 goto bad_reg;
5315 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5316 if (r)
5317 goto bad_reg;
5318
5319 rule_idx++;
5320
5321 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5322 r = -EINVAL;
5323 goto bad_reg;
5324 }
5325 }
5326
5327 r = set_regdom(rd);
5328 /* set_regdom took ownership */
5329 rd = NULL;
5330
5331 bad_reg:
5332 kfree(rd);
5333 return r;
5334 }
5335
5336 static int validate_scan_freqs(struct nlattr *freqs)
5337 {
5338 struct nlattr *attr1, *attr2;
5339 int n_channels = 0, tmp1, tmp2;
5340
5341 nla_for_each_nested(attr1, freqs, tmp1) {
5342 n_channels++;
5343 /*
5344 * Some hardware has a limited channel list for
5345 * scanning, and it is pretty much nonsensical
5346 * to scan for a channel twice, so disallow that
5347 * and don't require drivers to check that the
5348 * channel list they get isn't longer than what
5349 * they can scan, as long as they can scan all
5350 * the channels they registered at once.
5351 */
5352 nla_for_each_nested(attr2, freqs, tmp2)
5353 if (attr1 != attr2 &&
5354 nla_get_u32(attr1) == nla_get_u32(attr2))
5355 return 0;
5356 }
5357
5358 return n_channels;
5359 }
5360
5361 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5362 {
5363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5364 struct wireless_dev *wdev = info->user_ptr[1];
5365 struct cfg80211_scan_request *request;
5366 struct nlattr *attr;
5367 struct wiphy *wiphy;
5368 int err, tmp, n_ssids = 0, n_channels, i;
5369 size_t ie_len;
5370
5371 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5372 return -EINVAL;
5373
5374 wiphy = &rdev->wiphy;
5375
5376 if (!rdev->ops->scan)
5377 return -EOPNOTSUPP;
5378
5379 if (rdev->scan_req || rdev->scan_msg) {
5380 err = -EBUSY;
5381 goto unlock;
5382 }
5383
5384 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5385 n_channels = validate_scan_freqs(
5386 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5387 if (!n_channels) {
5388 err = -EINVAL;
5389 goto unlock;
5390 }
5391 } else {
5392 n_channels = ieee80211_get_num_supported_channels(wiphy);
5393 }
5394
5395 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5396 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5397 n_ssids++;
5398
5399 if (n_ssids > wiphy->max_scan_ssids) {
5400 err = -EINVAL;
5401 goto unlock;
5402 }
5403
5404 if (info->attrs[NL80211_ATTR_IE])
5405 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5406 else
5407 ie_len = 0;
5408
5409 if (ie_len > wiphy->max_scan_ie_len) {
5410 err = -EINVAL;
5411 goto unlock;
5412 }
5413
5414 request = kzalloc(sizeof(*request)
5415 + sizeof(*request->ssids) * n_ssids
5416 + sizeof(*request->channels) * n_channels
5417 + ie_len, GFP_KERNEL);
5418 if (!request) {
5419 err = -ENOMEM;
5420 goto unlock;
5421 }
5422
5423 if (n_ssids)
5424 request->ssids = (void *)&request->channels[n_channels];
5425 request->n_ssids = n_ssids;
5426 if (ie_len) {
5427 if (request->ssids)
5428 request->ie = (void *)(request->ssids + n_ssids);
5429 else
5430 request->ie = (void *)(request->channels + n_channels);
5431 }
5432
5433 i = 0;
5434 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5435 /* user specified, bail out if channel not found */
5436 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5437 struct ieee80211_channel *chan;
5438
5439 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5440
5441 if (!chan) {
5442 err = -EINVAL;
5443 goto out_free;
5444 }
5445
5446 /* ignore disabled channels */
5447 if (chan->flags & IEEE80211_CHAN_DISABLED)
5448 continue;
5449
5450 request->channels[i] = chan;
5451 i++;
5452 }
5453 } else {
5454 enum ieee80211_band band;
5455
5456 /* all channels */
5457 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5458 int j;
5459 if (!wiphy->bands[band])
5460 continue;
5461 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5462 struct ieee80211_channel *chan;
5463
5464 chan = &wiphy->bands[band]->channels[j];
5465
5466 if (chan->flags & IEEE80211_CHAN_DISABLED)
5467 continue;
5468
5469 request->channels[i] = chan;
5470 i++;
5471 }
5472 }
5473 }
5474
5475 if (!i) {
5476 err = -EINVAL;
5477 goto out_free;
5478 }
5479
5480 request->n_channels = i;
5481
5482 i = 0;
5483 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5484 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5485 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5486 err = -EINVAL;
5487 goto out_free;
5488 }
5489 request->ssids[i].ssid_len = nla_len(attr);
5490 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5491 i++;
5492 }
5493 }
5494
5495 if (info->attrs[NL80211_ATTR_IE]) {
5496 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5497 memcpy((void *)request->ie,
5498 nla_data(info->attrs[NL80211_ATTR_IE]),
5499 request->ie_len);
5500 }
5501
5502 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5503 if (wiphy->bands[i])
5504 request->rates[i] =
5505 (1 << wiphy->bands[i]->n_bitrates) - 1;
5506
5507 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5508 nla_for_each_nested(attr,
5509 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5510 tmp) {
5511 enum ieee80211_band band = nla_type(attr);
5512
5513 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5514 err = -EINVAL;
5515 goto out_free;
5516 }
5517
5518 if (!wiphy->bands[band])
5519 continue;
5520
5521 err = ieee80211_get_ratemask(wiphy->bands[band],
5522 nla_data(attr),
5523 nla_len(attr),
5524 &request->rates[band]);
5525 if (err)
5526 goto out_free;
5527 }
5528 }
5529
5530 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5531 request->flags = nla_get_u32(
5532 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5533 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5534 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5535 err = -EOPNOTSUPP;
5536 goto out_free;
5537 }
5538 }
5539
5540 request->no_cck =
5541 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5542
5543 request->wdev = wdev;
5544 request->wiphy = &rdev->wiphy;
5545 request->scan_start = jiffies;
5546
5547 rdev->scan_req = request;
5548 err = rdev_scan(rdev, request);
5549
5550 if (!err) {
5551 nl80211_send_scan_start(rdev, wdev);
5552 if (wdev->netdev)
5553 dev_hold(wdev->netdev);
5554 } else {
5555 out_free:
5556 rdev->scan_req = NULL;
5557 kfree(request);
5558 }
5559
5560 unlock:
5561 return err;
5562 }
5563
5564 static int nl80211_start_sched_scan(struct sk_buff *skb,
5565 struct genl_info *info)
5566 {
5567 struct cfg80211_sched_scan_request *request;
5568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5569 struct net_device *dev = info->user_ptr[1];
5570 struct nlattr *attr;
5571 struct wiphy *wiphy;
5572 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5573 u32 interval;
5574 enum ieee80211_band band;
5575 size_t ie_len;
5576 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5577 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5578
5579 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5580 !rdev->ops->sched_scan_start)
5581 return -EOPNOTSUPP;
5582
5583 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5584 return -EINVAL;
5585
5586 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5587 return -EINVAL;
5588
5589 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5590 if (interval == 0)
5591 return -EINVAL;
5592
5593 wiphy = &rdev->wiphy;
5594
5595 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5596 n_channels = validate_scan_freqs(
5597 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5598 if (!n_channels)
5599 return -EINVAL;
5600 } else {
5601 n_channels = ieee80211_get_num_supported_channels(wiphy);
5602 }
5603
5604 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5605 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5606 tmp)
5607 n_ssids++;
5608
5609 if (n_ssids > wiphy->max_sched_scan_ssids)
5610 return -EINVAL;
5611
5612 /*
5613 * First, count the number of 'real' matchsets. Due to an issue with
5614 * the old implementation, matchsets containing only the RSSI attribute
5615 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5616 * RSSI for all matchsets, rather than their own matchset for reporting
5617 * all APs with a strong RSSI. This is needed to be compatible with
5618 * older userspace that treated a matchset with only the RSSI as the
5619 * global RSSI for all other matchsets - if there are other matchsets.
5620 */
5621 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5622 nla_for_each_nested(attr,
5623 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5624 tmp) {
5625 struct nlattr *rssi;
5626
5627 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5628 nla_data(attr), nla_len(attr),
5629 nl80211_match_policy);
5630 if (err)
5631 return err;
5632 /* add other standalone attributes here */
5633 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5634 n_match_sets++;
5635 continue;
5636 }
5637 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5638 if (rssi)
5639 default_match_rssi = nla_get_s32(rssi);
5640 }
5641 }
5642
5643 /* However, if there's no other matchset, add the RSSI one */
5644 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5645 n_match_sets = 1;
5646
5647 if (n_match_sets > wiphy->max_match_sets)
5648 return -EINVAL;
5649
5650 if (info->attrs[NL80211_ATTR_IE])
5651 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5652 else
5653 ie_len = 0;
5654
5655 if (ie_len > wiphy->max_sched_scan_ie_len)
5656 return -EINVAL;
5657
5658 if (rdev->sched_scan_req) {
5659 err = -EINPROGRESS;
5660 goto out;
5661 }
5662
5663 request = kzalloc(sizeof(*request)
5664 + sizeof(*request->ssids) * n_ssids
5665 + sizeof(*request->match_sets) * n_match_sets
5666 + sizeof(*request->channels) * n_channels
5667 + ie_len, GFP_KERNEL);
5668 if (!request) {
5669 err = -ENOMEM;
5670 goto out;
5671 }
5672
5673 if (n_ssids)
5674 request->ssids = (void *)&request->channels[n_channels];
5675 request->n_ssids = n_ssids;
5676 if (ie_len) {
5677 if (request->ssids)
5678 request->ie = (void *)(request->ssids + n_ssids);
5679 else
5680 request->ie = (void *)(request->channels + n_channels);
5681 }
5682
5683 if (n_match_sets) {
5684 if (request->ie)
5685 request->match_sets = (void *)(request->ie + ie_len);
5686 else if (request->ssids)
5687 request->match_sets =
5688 (void *)(request->ssids + n_ssids);
5689 else
5690 request->match_sets =
5691 (void *)(request->channels + n_channels);
5692 }
5693 request->n_match_sets = n_match_sets;
5694
5695 i = 0;
5696 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5697 /* user specified, bail out if channel not found */
5698 nla_for_each_nested(attr,
5699 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5700 tmp) {
5701 struct ieee80211_channel *chan;
5702
5703 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5704
5705 if (!chan) {
5706 err = -EINVAL;
5707 goto out_free;
5708 }
5709
5710 /* ignore disabled channels */
5711 if (chan->flags & IEEE80211_CHAN_DISABLED)
5712 continue;
5713
5714 request->channels[i] = chan;
5715 i++;
5716 }
5717 } else {
5718 /* all channels */
5719 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5720 int j;
5721 if (!wiphy->bands[band])
5722 continue;
5723 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5724 struct ieee80211_channel *chan;
5725
5726 chan = &wiphy->bands[band]->channels[j];
5727
5728 if (chan->flags & IEEE80211_CHAN_DISABLED)
5729 continue;
5730
5731 request->channels[i] = chan;
5732 i++;
5733 }
5734 }
5735 }
5736
5737 if (!i) {
5738 err = -EINVAL;
5739 goto out_free;
5740 }
5741
5742 request->n_channels = i;
5743
5744 i = 0;
5745 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5746 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5747 tmp) {
5748 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5749 err = -EINVAL;
5750 goto out_free;
5751 }
5752 request->ssids[i].ssid_len = nla_len(attr);
5753 memcpy(request->ssids[i].ssid, nla_data(attr),
5754 nla_len(attr));
5755 i++;
5756 }
5757 }
5758
5759 i = 0;
5760 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5761 nla_for_each_nested(attr,
5762 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5763 tmp) {
5764 struct nlattr *ssid, *rssi;
5765
5766 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5767 nla_data(attr), nla_len(attr),
5768 nl80211_match_policy);
5769 if (err)
5770 goto out_free;
5771 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5772 if (ssid) {
5773 if (WARN_ON(i >= n_match_sets)) {
5774 /* this indicates a programming error,
5775 * the loop above should have verified
5776 * things properly
5777 */
5778 err = -EINVAL;
5779 goto out_free;
5780 }
5781
5782 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5783 err = -EINVAL;
5784 goto out_free;
5785 }
5786 memcpy(request->match_sets[i].ssid.ssid,
5787 nla_data(ssid), nla_len(ssid));
5788 request->match_sets[i].ssid.ssid_len =
5789 nla_len(ssid);
5790 /* special attribute - old implemenation w/a */
5791 request->match_sets[i].rssi_thold =
5792 default_match_rssi;
5793 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5794 if (rssi)
5795 request->match_sets[i].rssi_thold =
5796 nla_get_s32(rssi);
5797 }
5798 i++;
5799 }
5800
5801 /* there was no other matchset, so the RSSI one is alone */
5802 if (i == 0)
5803 request->match_sets[0].rssi_thold = default_match_rssi;
5804
5805 request->min_rssi_thold = INT_MAX;
5806 for (i = 0; i < n_match_sets; i++)
5807 request->min_rssi_thold =
5808 min(request->match_sets[i].rssi_thold,
5809 request->min_rssi_thold);
5810 } else {
5811 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5812 }
5813
5814 if (ie_len) {
5815 request->ie_len = ie_len;
5816 memcpy((void *)request->ie,
5817 nla_data(info->attrs[NL80211_ATTR_IE]),
5818 request->ie_len);
5819 }
5820
5821 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5822 request->flags = nla_get_u32(
5823 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5824 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5825 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5826 err = -EOPNOTSUPP;
5827 goto out_free;
5828 }
5829 }
5830
5831 request->dev = dev;
5832 request->wiphy = &rdev->wiphy;
5833 request->interval = interval;
5834 request->scan_start = jiffies;
5835
5836 err = rdev_sched_scan_start(rdev, dev, request);
5837 if (!err) {
5838 rdev->sched_scan_req = request;
5839 nl80211_send_sched_scan(rdev, dev,
5840 NL80211_CMD_START_SCHED_SCAN);
5841 goto out;
5842 }
5843
5844 out_free:
5845 kfree(request);
5846 out:
5847 return err;
5848 }
5849
5850 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5851 struct genl_info *info)
5852 {
5853 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5854
5855 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5856 !rdev->ops->sched_scan_stop)
5857 return -EOPNOTSUPP;
5858
5859 return __cfg80211_stop_sched_scan(rdev, false);
5860 }
5861
5862 static int nl80211_start_radar_detection(struct sk_buff *skb,
5863 struct genl_info *info)
5864 {
5865 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5866 struct net_device *dev = info->user_ptr[1];
5867 struct wireless_dev *wdev = dev->ieee80211_ptr;
5868 struct cfg80211_chan_def chandef;
5869 enum nl80211_dfs_regions dfs_region;
5870 unsigned int cac_time_ms;
5871 int err;
5872
5873 dfs_region = reg_get_dfs_region(wdev->wiphy);
5874 if (dfs_region == NL80211_DFS_UNSET)
5875 return -EINVAL;
5876
5877 err = nl80211_parse_chandef(rdev, info, &chandef);
5878 if (err)
5879 return err;
5880
5881 if (netif_carrier_ok(dev))
5882 return -EBUSY;
5883
5884 if (wdev->cac_started)
5885 return -EBUSY;
5886
5887 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
5888 wdev->iftype);
5889 if (err < 0)
5890 return err;
5891
5892 if (err == 0)
5893 return -EINVAL;
5894
5895 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5896 return -EINVAL;
5897
5898 if (!rdev->ops->start_radar_detection)
5899 return -EOPNOTSUPP;
5900
5901 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
5902 if (WARN_ON(!cac_time_ms))
5903 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
5904
5905 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
5906 cac_time_ms);
5907 if (!err) {
5908 wdev->chandef = chandef;
5909 wdev->cac_started = true;
5910 wdev->cac_start_time = jiffies;
5911 wdev->cac_time_ms = cac_time_ms;
5912 }
5913 return err;
5914 }
5915
5916 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5917 {
5918 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5919 struct net_device *dev = info->user_ptr[1];
5920 struct wireless_dev *wdev = dev->ieee80211_ptr;
5921 struct cfg80211_csa_settings params;
5922 /* csa_attrs is defined static to avoid waste of stack size - this
5923 * function is called under RTNL lock, so this should not be a problem.
5924 */
5925 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5926 u8 radar_detect_width = 0;
5927 int err;
5928 bool need_new_beacon = false;
5929 int len, i;
5930 u32 cs_count;
5931
5932 if (!rdev->ops->channel_switch ||
5933 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5934 return -EOPNOTSUPP;
5935
5936 switch (dev->ieee80211_ptr->iftype) {
5937 case NL80211_IFTYPE_AP:
5938 case NL80211_IFTYPE_P2P_GO:
5939 need_new_beacon = true;
5940
5941 /* useless if AP is not running */
5942 if (!wdev->beacon_interval)
5943 return -ENOTCONN;
5944 break;
5945 case NL80211_IFTYPE_ADHOC:
5946 if (!wdev->ssid_len)
5947 return -ENOTCONN;
5948 break;
5949 case NL80211_IFTYPE_MESH_POINT:
5950 if (!wdev->mesh_id_len)
5951 return -ENOTCONN;
5952 break;
5953 default:
5954 return -EOPNOTSUPP;
5955 }
5956
5957 memset(&params, 0, sizeof(params));
5958
5959 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5960 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5961 return -EINVAL;
5962
5963 /* only important for AP, IBSS and mesh create IEs internally */
5964 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5965 return -EINVAL;
5966
5967 /* Even though the attribute is u32, the specification says
5968 * u8, so let's make sure we don't overflow.
5969 */
5970 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5971 if (cs_count > 255)
5972 return -EINVAL;
5973
5974 params.count = cs_count;
5975
5976 if (!need_new_beacon)
5977 goto skip_beacons;
5978
5979 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5980 if (err)
5981 return err;
5982
5983 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5984 info->attrs[NL80211_ATTR_CSA_IES],
5985 nl80211_policy);
5986 if (err)
5987 return err;
5988
5989 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5990 if (err)
5991 return err;
5992
5993 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5994 return -EINVAL;
5995
5996 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5997 if (!len || (len % sizeof(u16)))
5998 return -EINVAL;
5999
6000 params.n_counter_offsets_beacon = len / sizeof(u16);
6001 if (rdev->wiphy.max_num_csa_counters &&
6002 (params.n_counter_offsets_beacon >
6003 rdev->wiphy.max_num_csa_counters))
6004 return -EINVAL;
6005
6006 params.counter_offsets_beacon =
6007 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6008
6009 /* sanity checks - counters should fit and be the same */
6010 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6011 u16 offset = params.counter_offsets_beacon[i];
6012
6013 if (offset >= params.beacon_csa.tail_len)
6014 return -EINVAL;
6015
6016 if (params.beacon_csa.tail[offset] != params.count)
6017 return -EINVAL;
6018 }
6019
6020 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6021 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6022 if (!len || (len % sizeof(u16)))
6023 return -EINVAL;
6024
6025 params.n_counter_offsets_presp = len / sizeof(u16);
6026 if (rdev->wiphy.max_num_csa_counters &&
6027 (params.n_counter_offsets_beacon >
6028 rdev->wiphy.max_num_csa_counters))
6029 return -EINVAL;
6030
6031 params.counter_offsets_presp =
6032 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6033
6034 /* sanity checks - counters should fit and be the same */
6035 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6036 u16 offset = params.counter_offsets_presp[i];
6037
6038 if (offset >= params.beacon_csa.probe_resp_len)
6039 return -EINVAL;
6040
6041 if (params.beacon_csa.probe_resp[offset] !=
6042 params.count)
6043 return -EINVAL;
6044 }
6045 }
6046
6047 skip_beacons:
6048 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6049 if (err)
6050 return err;
6051
6052 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6053 wdev->iftype))
6054 return -EINVAL;
6055
6056 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6057 &params.chandef,
6058 wdev->iftype);
6059 if (err < 0)
6060 return err;
6061
6062 if (err > 0) {
6063 radar_detect_width = BIT(params.chandef.width);
6064 params.radar_required = true;
6065 }
6066
6067 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6068 params.block_tx = true;
6069
6070 wdev_lock(wdev);
6071 err = rdev_channel_switch(rdev, dev, &params);
6072 wdev_unlock(wdev);
6073
6074 return err;
6075 }
6076
6077 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6078 u32 seq, int flags,
6079 struct cfg80211_registered_device *rdev,
6080 struct wireless_dev *wdev,
6081 struct cfg80211_internal_bss *intbss)
6082 {
6083 struct cfg80211_bss *res = &intbss->pub;
6084 const struct cfg80211_bss_ies *ies;
6085 void *hdr;
6086 struct nlattr *bss;
6087
6088 ASSERT_WDEV_LOCK(wdev);
6089
6090 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6091 NL80211_CMD_NEW_SCAN_RESULTS);
6092 if (!hdr)
6093 return -1;
6094
6095 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6096
6097 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6098 goto nla_put_failure;
6099 if (wdev->netdev &&
6100 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6101 goto nla_put_failure;
6102 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6103 goto nla_put_failure;
6104
6105 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6106 if (!bss)
6107 goto nla_put_failure;
6108 if ((!is_zero_ether_addr(res->bssid) &&
6109 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6110 goto nla_put_failure;
6111
6112 rcu_read_lock();
6113 /* indicate whether we have probe response data or not */
6114 if (rcu_access_pointer(res->proberesp_ies) &&
6115 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6116 goto fail_unlock_rcu;
6117
6118 /* this pointer prefers to be pointed to probe response data
6119 * but is always valid
6120 */
6121 ies = rcu_dereference(res->ies);
6122 if (ies) {
6123 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6124 goto fail_unlock_rcu;
6125 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6126 ies->len, ies->data))
6127 goto fail_unlock_rcu;
6128 }
6129
6130 /* and this pointer is always (unless driver didn't know) beacon data */
6131 ies = rcu_dereference(res->beacon_ies);
6132 if (ies && ies->from_beacon) {
6133 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6134 goto fail_unlock_rcu;
6135 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6136 ies->len, ies->data))
6137 goto fail_unlock_rcu;
6138 }
6139 rcu_read_unlock();
6140
6141 if (res->beacon_interval &&
6142 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6143 goto nla_put_failure;
6144 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6145 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6146 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6147 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6148 jiffies_to_msecs(jiffies - intbss->ts)))
6149 goto nla_put_failure;
6150
6151 switch (rdev->wiphy.signal_type) {
6152 case CFG80211_SIGNAL_TYPE_MBM:
6153 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6154 goto nla_put_failure;
6155 break;
6156 case CFG80211_SIGNAL_TYPE_UNSPEC:
6157 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6158 goto nla_put_failure;
6159 break;
6160 default:
6161 break;
6162 }
6163
6164 switch (wdev->iftype) {
6165 case NL80211_IFTYPE_P2P_CLIENT:
6166 case NL80211_IFTYPE_STATION:
6167 if (intbss == wdev->current_bss &&
6168 nla_put_u32(msg, NL80211_BSS_STATUS,
6169 NL80211_BSS_STATUS_ASSOCIATED))
6170 goto nla_put_failure;
6171 break;
6172 case NL80211_IFTYPE_ADHOC:
6173 if (intbss == wdev->current_bss &&
6174 nla_put_u32(msg, NL80211_BSS_STATUS,
6175 NL80211_BSS_STATUS_IBSS_JOINED))
6176 goto nla_put_failure;
6177 break;
6178 default:
6179 break;
6180 }
6181
6182 nla_nest_end(msg, bss);
6183
6184 return genlmsg_end(msg, hdr);
6185
6186 fail_unlock_rcu:
6187 rcu_read_unlock();
6188 nla_put_failure:
6189 genlmsg_cancel(msg, hdr);
6190 return -EMSGSIZE;
6191 }
6192
6193 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6194 {
6195 struct cfg80211_registered_device *rdev;
6196 struct cfg80211_internal_bss *scan;
6197 struct wireless_dev *wdev;
6198 int start = cb->args[2], idx = 0;
6199 int err;
6200
6201 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6202 if (err)
6203 return err;
6204
6205 wdev_lock(wdev);
6206 spin_lock_bh(&rdev->bss_lock);
6207 cfg80211_bss_expire(rdev);
6208
6209 cb->seq = rdev->bss_generation;
6210
6211 list_for_each_entry(scan, &rdev->bss_list, list) {
6212 if (++idx <= start)
6213 continue;
6214 if (nl80211_send_bss(skb, cb,
6215 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6216 rdev, wdev, scan) < 0) {
6217 idx--;
6218 break;
6219 }
6220 }
6221
6222 spin_unlock_bh(&rdev->bss_lock);
6223 wdev_unlock(wdev);
6224
6225 cb->args[2] = idx;
6226 nl80211_finish_wdev_dump(rdev);
6227
6228 return skb->len;
6229 }
6230
6231 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6232 int flags, struct net_device *dev,
6233 struct survey_info *survey)
6234 {
6235 void *hdr;
6236 struct nlattr *infoattr;
6237
6238 hdr = nl80211hdr_put(msg, portid, seq, flags,
6239 NL80211_CMD_NEW_SURVEY_RESULTS);
6240 if (!hdr)
6241 return -ENOMEM;
6242
6243 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6244 goto nla_put_failure;
6245
6246 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6247 if (!infoattr)
6248 goto nla_put_failure;
6249
6250 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6251 survey->channel->center_freq))
6252 goto nla_put_failure;
6253
6254 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6255 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6256 goto nla_put_failure;
6257 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6258 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6259 goto nla_put_failure;
6260 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6261 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6262 survey->channel_time))
6263 goto nla_put_failure;
6264 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6265 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6266 survey->channel_time_busy))
6267 goto nla_put_failure;
6268 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6269 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6270 survey->channel_time_ext_busy))
6271 goto nla_put_failure;
6272 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6273 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6274 survey->channel_time_rx))
6275 goto nla_put_failure;
6276 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6277 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6278 survey->channel_time_tx))
6279 goto nla_put_failure;
6280
6281 nla_nest_end(msg, infoattr);
6282
6283 return genlmsg_end(msg, hdr);
6284
6285 nla_put_failure:
6286 genlmsg_cancel(msg, hdr);
6287 return -EMSGSIZE;
6288 }
6289
6290 static int nl80211_dump_survey(struct sk_buff *skb,
6291 struct netlink_callback *cb)
6292 {
6293 struct survey_info survey;
6294 struct cfg80211_registered_device *rdev;
6295 struct wireless_dev *wdev;
6296 int survey_idx = cb->args[2];
6297 int res;
6298
6299 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6300 if (res)
6301 return res;
6302
6303 if (!wdev->netdev) {
6304 res = -EINVAL;
6305 goto out_err;
6306 }
6307
6308 if (!rdev->ops->dump_survey) {
6309 res = -EOPNOTSUPP;
6310 goto out_err;
6311 }
6312
6313 while (1) {
6314 struct ieee80211_channel *chan;
6315
6316 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6317 if (res == -ENOENT)
6318 break;
6319 if (res)
6320 goto out_err;
6321
6322 /* Survey without a channel doesn't make sense */
6323 if (!survey.channel) {
6324 res = -EINVAL;
6325 goto out;
6326 }
6327
6328 chan = ieee80211_get_channel(&rdev->wiphy,
6329 survey.channel->center_freq);
6330 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6331 survey_idx++;
6332 continue;
6333 }
6334
6335 if (nl80211_send_survey(skb,
6336 NETLINK_CB(cb->skb).portid,
6337 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6338 wdev->netdev, &survey) < 0)
6339 goto out;
6340 survey_idx++;
6341 }
6342
6343 out:
6344 cb->args[2] = survey_idx;
6345 res = skb->len;
6346 out_err:
6347 nl80211_finish_wdev_dump(rdev);
6348 return res;
6349 }
6350
6351 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6352 {
6353 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6354 NL80211_WPA_VERSION_2));
6355 }
6356
6357 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6358 {
6359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6360 struct net_device *dev = info->user_ptr[1];
6361 struct ieee80211_channel *chan;
6362 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6363 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6364 enum nl80211_auth_type auth_type;
6365 struct key_parse key;
6366 bool local_state_change;
6367
6368 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6369 return -EINVAL;
6370
6371 if (!info->attrs[NL80211_ATTR_MAC])
6372 return -EINVAL;
6373
6374 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6375 return -EINVAL;
6376
6377 if (!info->attrs[NL80211_ATTR_SSID])
6378 return -EINVAL;
6379
6380 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6381 return -EINVAL;
6382
6383 err = nl80211_parse_key(info, &key);
6384 if (err)
6385 return err;
6386
6387 if (key.idx >= 0) {
6388 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6389 return -EINVAL;
6390 if (!key.p.key || !key.p.key_len)
6391 return -EINVAL;
6392 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6393 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6394 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6395 key.p.key_len != WLAN_KEY_LEN_WEP104))
6396 return -EINVAL;
6397 if (key.idx > 4)
6398 return -EINVAL;
6399 } else {
6400 key.p.key_len = 0;
6401 key.p.key = NULL;
6402 }
6403
6404 if (key.idx >= 0) {
6405 int i;
6406 bool ok = false;
6407 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6408 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6409 ok = true;
6410 break;
6411 }
6412 }
6413 if (!ok)
6414 return -EINVAL;
6415 }
6416
6417 if (!rdev->ops->auth)
6418 return -EOPNOTSUPP;
6419
6420 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6421 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6422 return -EOPNOTSUPP;
6423
6424 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6425 chan = nl80211_get_valid_chan(&rdev->wiphy,
6426 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6427 if (!chan)
6428 return -EINVAL;
6429
6430 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6431 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6432
6433 if (info->attrs[NL80211_ATTR_IE]) {
6434 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6435 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6436 }
6437
6438 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6439 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6440 return -EINVAL;
6441
6442 if (auth_type == NL80211_AUTHTYPE_SAE &&
6443 !info->attrs[NL80211_ATTR_SAE_DATA])
6444 return -EINVAL;
6445
6446 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6447 if (auth_type != NL80211_AUTHTYPE_SAE)
6448 return -EINVAL;
6449 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6450 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6451 /* need to include at least Auth Transaction and Status Code */
6452 if (sae_data_len < 4)
6453 return -EINVAL;
6454 }
6455
6456 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6457
6458 /*
6459 * Since we no longer track auth state, ignore
6460 * requests to only change local state.
6461 */
6462 if (local_state_change)
6463 return 0;
6464
6465 wdev_lock(dev->ieee80211_ptr);
6466 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6467 ssid, ssid_len, ie, ie_len,
6468 key.p.key, key.p.key_len, key.idx,
6469 sae_data, sae_data_len);
6470 wdev_unlock(dev->ieee80211_ptr);
6471 return err;
6472 }
6473
6474 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6475 struct genl_info *info,
6476 struct cfg80211_crypto_settings *settings,
6477 int cipher_limit)
6478 {
6479 memset(settings, 0, sizeof(*settings));
6480
6481 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6482
6483 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6484 u16 proto;
6485 proto = nla_get_u16(
6486 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6487 settings->control_port_ethertype = cpu_to_be16(proto);
6488 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6489 proto != ETH_P_PAE)
6490 return -EINVAL;
6491 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6492 settings->control_port_no_encrypt = true;
6493 } else
6494 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6495
6496 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6497 void *data;
6498 int len, i;
6499
6500 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6501 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6502 settings->n_ciphers_pairwise = len / sizeof(u32);
6503
6504 if (len % sizeof(u32))
6505 return -EINVAL;
6506
6507 if (settings->n_ciphers_pairwise > cipher_limit)
6508 return -EINVAL;
6509
6510 memcpy(settings->ciphers_pairwise, data, len);
6511
6512 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6513 if (!cfg80211_supported_cipher_suite(
6514 &rdev->wiphy,
6515 settings->ciphers_pairwise[i]))
6516 return -EINVAL;
6517 }
6518
6519 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6520 settings->cipher_group =
6521 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6522 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6523 settings->cipher_group))
6524 return -EINVAL;
6525 }
6526
6527 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6528 settings->wpa_versions =
6529 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6530 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6531 return -EINVAL;
6532 }
6533
6534 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6535 void *data;
6536 int len;
6537
6538 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6539 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6540 settings->n_akm_suites = len / sizeof(u32);
6541
6542 if (len % sizeof(u32))
6543 return -EINVAL;
6544
6545 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6546 return -EINVAL;
6547
6548 memcpy(settings->akm_suites, data, len);
6549 }
6550
6551 return 0;
6552 }
6553
6554 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6555 {
6556 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6557 struct net_device *dev = info->user_ptr[1];
6558 struct ieee80211_channel *chan;
6559 struct cfg80211_assoc_request req = {};
6560 const u8 *bssid, *ssid;
6561 int err, ssid_len = 0;
6562
6563 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6564 return -EINVAL;
6565
6566 if (!info->attrs[NL80211_ATTR_MAC] ||
6567 !info->attrs[NL80211_ATTR_SSID] ||
6568 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6569 return -EINVAL;
6570
6571 if (!rdev->ops->assoc)
6572 return -EOPNOTSUPP;
6573
6574 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6575 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6576 return -EOPNOTSUPP;
6577
6578 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6579
6580 chan = nl80211_get_valid_chan(&rdev->wiphy,
6581 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6582 if (!chan)
6583 return -EINVAL;
6584
6585 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6586 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6587
6588 if (info->attrs[NL80211_ATTR_IE]) {
6589 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6590 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6591 }
6592
6593 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6594 enum nl80211_mfp mfp =
6595 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6596 if (mfp == NL80211_MFP_REQUIRED)
6597 req.use_mfp = true;
6598 else if (mfp != NL80211_MFP_NO)
6599 return -EINVAL;
6600 }
6601
6602 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6603 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6604
6605 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6606 req.flags |= ASSOC_REQ_DISABLE_HT;
6607
6608 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6609 memcpy(&req.ht_capa_mask,
6610 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6611 sizeof(req.ht_capa_mask));
6612
6613 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6614 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6615 return -EINVAL;
6616 memcpy(&req.ht_capa,
6617 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6618 sizeof(req.ht_capa));
6619 }
6620
6621 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6622 req.flags |= ASSOC_REQ_DISABLE_VHT;
6623
6624 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6625 memcpy(&req.vht_capa_mask,
6626 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6627 sizeof(req.vht_capa_mask));
6628
6629 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6630 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6631 return -EINVAL;
6632 memcpy(&req.vht_capa,
6633 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6634 sizeof(req.vht_capa));
6635 }
6636
6637 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6638 if (!(rdev->wiphy.features &
6639 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6640 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6641 return -EINVAL;
6642 req.flags |= ASSOC_REQ_USE_RRM;
6643 }
6644
6645 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6646 if (!err) {
6647 wdev_lock(dev->ieee80211_ptr);
6648 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6649 ssid, ssid_len, &req);
6650 wdev_unlock(dev->ieee80211_ptr);
6651 }
6652
6653 return err;
6654 }
6655
6656 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6657 {
6658 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6659 struct net_device *dev = info->user_ptr[1];
6660 const u8 *ie = NULL, *bssid;
6661 int ie_len = 0, err;
6662 u16 reason_code;
6663 bool local_state_change;
6664
6665 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6666 return -EINVAL;
6667
6668 if (!info->attrs[NL80211_ATTR_MAC])
6669 return -EINVAL;
6670
6671 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6672 return -EINVAL;
6673
6674 if (!rdev->ops->deauth)
6675 return -EOPNOTSUPP;
6676
6677 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6678 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6679 return -EOPNOTSUPP;
6680
6681 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6682
6683 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6684 if (reason_code == 0) {
6685 /* Reason Code 0 is reserved */
6686 return -EINVAL;
6687 }
6688
6689 if (info->attrs[NL80211_ATTR_IE]) {
6690 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6691 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6692 }
6693
6694 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6695
6696 wdev_lock(dev->ieee80211_ptr);
6697 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6698 local_state_change);
6699 wdev_unlock(dev->ieee80211_ptr);
6700 return err;
6701 }
6702
6703 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6704 {
6705 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6706 struct net_device *dev = info->user_ptr[1];
6707 const u8 *ie = NULL, *bssid;
6708 int ie_len = 0, err;
6709 u16 reason_code;
6710 bool local_state_change;
6711
6712 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6713 return -EINVAL;
6714
6715 if (!info->attrs[NL80211_ATTR_MAC])
6716 return -EINVAL;
6717
6718 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6719 return -EINVAL;
6720
6721 if (!rdev->ops->disassoc)
6722 return -EOPNOTSUPP;
6723
6724 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6725 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6726 return -EOPNOTSUPP;
6727
6728 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6729
6730 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6731 if (reason_code == 0) {
6732 /* Reason Code 0 is reserved */
6733 return -EINVAL;
6734 }
6735
6736 if (info->attrs[NL80211_ATTR_IE]) {
6737 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6738 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6739 }
6740
6741 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6742
6743 wdev_lock(dev->ieee80211_ptr);
6744 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6745 local_state_change);
6746 wdev_unlock(dev->ieee80211_ptr);
6747 return err;
6748 }
6749
6750 static bool
6751 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6752 int mcast_rate[IEEE80211_NUM_BANDS],
6753 int rateval)
6754 {
6755 struct wiphy *wiphy = &rdev->wiphy;
6756 bool found = false;
6757 int band, i;
6758
6759 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6760 struct ieee80211_supported_band *sband;
6761
6762 sband = wiphy->bands[band];
6763 if (!sband)
6764 continue;
6765
6766 for (i = 0; i < sband->n_bitrates; i++) {
6767 if (sband->bitrates[i].bitrate == rateval) {
6768 mcast_rate[band] = i + 1;
6769 found = true;
6770 break;
6771 }
6772 }
6773 }
6774
6775 return found;
6776 }
6777
6778 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6779 {
6780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6781 struct net_device *dev = info->user_ptr[1];
6782 struct cfg80211_ibss_params ibss;
6783 struct wiphy *wiphy;
6784 struct cfg80211_cached_keys *connkeys = NULL;
6785 int err;
6786
6787 memset(&ibss, 0, sizeof(ibss));
6788
6789 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6790 return -EINVAL;
6791
6792 if (!info->attrs[NL80211_ATTR_SSID] ||
6793 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6794 return -EINVAL;
6795
6796 ibss.beacon_interval = 100;
6797
6798 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6799 ibss.beacon_interval =
6800 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6801 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6802 return -EINVAL;
6803 }
6804
6805 if (!rdev->ops->join_ibss)
6806 return -EOPNOTSUPP;
6807
6808 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6809 return -EOPNOTSUPP;
6810
6811 wiphy = &rdev->wiphy;
6812
6813 if (info->attrs[NL80211_ATTR_MAC]) {
6814 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6815
6816 if (!is_valid_ether_addr(ibss.bssid))
6817 return -EINVAL;
6818 }
6819 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6820 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6821
6822 if (info->attrs[NL80211_ATTR_IE]) {
6823 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6824 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6825 }
6826
6827 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6828 if (err)
6829 return err;
6830
6831 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6832 NL80211_IFTYPE_ADHOC))
6833 return -EINVAL;
6834
6835 switch (ibss.chandef.width) {
6836 case NL80211_CHAN_WIDTH_5:
6837 case NL80211_CHAN_WIDTH_10:
6838 case NL80211_CHAN_WIDTH_20_NOHT:
6839 break;
6840 case NL80211_CHAN_WIDTH_20:
6841 case NL80211_CHAN_WIDTH_40:
6842 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6843 break;
6844 default:
6845 return -EINVAL;
6846 }
6847
6848 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6849 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6850
6851 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6852 u8 *rates =
6853 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6854 int n_rates =
6855 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6856 struct ieee80211_supported_band *sband =
6857 wiphy->bands[ibss.chandef.chan->band];
6858
6859 err = ieee80211_get_ratemask(sband, rates, n_rates,
6860 &ibss.basic_rates);
6861 if (err)
6862 return err;
6863 }
6864
6865 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6866 memcpy(&ibss.ht_capa_mask,
6867 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6868 sizeof(ibss.ht_capa_mask));
6869
6870 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6871 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6872 return -EINVAL;
6873 memcpy(&ibss.ht_capa,
6874 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6875 sizeof(ibss.ht_capa));
6876 }
6877
6878 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6879 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6880 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6881 return -EINVAL;
6882
6883 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6884 bool no_ht = false;
6885
6886 connkeys = nl80211_parse_connkeys(rdev,
6887 info->attrs[NL80211_ATTR_KEYS],
6888 &no_ht);
6889 if (IS_ERR(connkeys))
6890 return PTR_ERR(connkeys);
6891
6892 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6893 no_ht) {
6894 kfree(connkeys);
6895 return -EINVAL;
6896 }
6897 }
6898
6899 ibss.control_port =
6900 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6901
6902 ibss.userspace_handles_dfs =
6903 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6904
6905 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6906 if (err)
6907 kzfree(connkeys);
6908 return err;
6909 }
6910
6911 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6912 {
6913 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6914 struct net_device *dev = info->user_ptr[1];
6915
6916 if (!rdev->ops->leave_ibss)
6917 return -EOPNOTSUPP;
6918
6919 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6920 return -EOPNOTSUPP;
6921
6922 return cfg80211_leave_ibss(rdev, dev, false);
6923 }
6924
6925 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6926 {
6927 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6928 struct net_device *dev = info->user_ptr[1];
6929 int mcast_rate[IEEE80211_NUM_BANDS];
6930 u32 nla_rate;
6931 int err;
6932
6933 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6934 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6935 return -EOPNOTSUPP;
6936
6937 if (!rdev->ops->set_mcast_rate)
6938 return -EOPNOTSUPP;
6939
6940 memset(mcast_rate, 0, sizeof(mcast_rate));
6941
6942 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6943 return -EINVAL;
6944
6945 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6946 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6947 return -EINVAL;
6948
6949 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6950
6951 return err;
6952 }
6953
6954 static struct sk_buff *
6955 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6956 int approxlen, u32 portid, u32 seq,
6957 enum nl80211_commands cmd,
6958 enum nl80211_attrs attr,
6959 const struct nl80211_vendor_cmd_info *info,
6960 gfp_t gfp)
6961 {
6962 struct sk_buff *skb;
6963 void *hdr;
6964 struct nlattr *data;
6965
6966 skb = nlmsg_new(approxlen + 100, gfp);
6967 if (!skb)
6968 return NULL;
6969
6970 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6971 if (!hdr) {
6972 kfree_skb(skb);
6973 return NULL;
6974 }
6975
6976 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6977 goto nla_put_failure;
6978
6979 if (info) {
6980 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6981 info->vendor_id))
6982 goto nla_put_failure;
6983 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6984 info->subcmd))
6985 goto nla_put_failure;
6986 }
6987
6988 data = nla_nest_start(skb, attr);
6989
6990 ((void **)skb->cb)[0] = rdev;
6991 ((void **)skb->cb)[1] = hdr;
6992 ((void **)skb->cb)[2] = data;
6993
6994 return skb;
6995
6996 nla_put_failure:
6997 kfree_skb(skb);
6998 return NULL;
6999 }
7000
7001 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7002 enum nl80211_commands cmd,
7003 enum nl80211_attrs attr,
7004 int vendor_event_idx,
7005 int approxlen, gfp_t gfp)
7006 {
7007 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7008 const struct nl80211_vendor_cmd_info *info;
7009
7010 switch (cmd) {
7011 case NL80211_CMD_TESTMODE:
7012 if (WARN_ON(vendor_event_idx != -1))
7013 return NULL;
7014 info = NULL;
7015 break;
7016 case NL80211_CMD_VENDOR:
7017 if (WARN_ON(vendor_event_idx < 0 ||
7018 vendor_event_idx >= wiphy->n_vendor_events))
7019 return NULL;
7020 info = &wiphy->vendor_events[vendor_event_idx];
7021 break;
7022 default:
7023 WARN_ON(1);
7024 return NULL;
7025 }
7026
7027 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7028 cmd, attr, info, gfp);
7029 }
7030 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7031
7032 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7033 {
7034 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7035 void *hdr = ((void **)skb->cb)[1];
7036 struct nlattr *data = ((void **)skb->cb)[2];
7037 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7038
7039 /* clear CB data for netlink core to own from now on */
7040 memset(skb->cb, 0, sizeof(skb->cb));
7041
7042 nla_nest_end(skb, data);
7043 genlmsg_end(skb, hdr);
7044
7045 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7046 mcgrp = NL80211_MCGRP_VENDOR;
7047
7048 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7049 mcgrp, gfp);
7050 }
7051 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7052
7053 #ifdef CONFIG_NL80211_TESTMODE
7054 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7055 {
7056 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7057 struct wireless_dev *wdev =
7058 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7059 int err;
7060
7061 if (!rdev->ops->testmode_cmd)
7062 return -EOPNOTSUPP;
7063
7064 if (IS_ERR(wdev)) {
7065 err = PTR_ERR(wdev);
7066 if (err != -EINVAL)
7067 return err;
7068 wdev = NULL;
7069 } else if (wdev->wiphy != &rdev->wiphy) {
7070 return -EINVAL;
7071 }
7072
7073 if (!info->attrs[NL80211_ATTR_TESTDATA])
7074 return -EINVAL;
7075
7076 rdev->cur_cmd_info = info;
7077 err = rdev_testmode_cmd(rdev, wdev,
7078 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7079 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7080 rdev->cur_cmd_info = NULL;
7081
7082 return err;
7083 }
7084
7085 static int nl80211_testmode_dump(struct sk_buff *skb,
7086 struct netlink_callback *cb)
7087 {
7088 struct cfg80211_registered_device *rdev;
7089 int err;
7090 long phy_idx;
7091 void *data = NULL;
7092 int data_len = 0;
7093
7094 rtnl_lock();
7095
7096 if (cb->args[0]) {
7097 /*
7098 * 0 is a valid index, but not valid for args[0],
7099 * so we need to offset by 1.
7100 */
7101 phy_idx = cb->args[0] - 1;
7102 } else {
7103 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7104 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7105 nl80211_policy);
7106 if (err)
7107 goto out_err;
7108
7109 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7110 nl80211_fam.attrbuf);
7111 if (IS_ERR(rdev)) {
7112 err = PTR_ERR(rdev);
7113 goto out_err;
7114 }
7115 phy_idx = rdev->wiphy_idx;
7116 rdev = NULL;
7117
7118 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7119 cb->args[1] =
7120 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7121 }
7122
7123 if (cb->args[1]) {
7124 data = nla_data((void *)cb->args[1]);
7125 data_len = nla_len((void *)cb->args[1]);
7126 }
7127
7128 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7129 if (!rdev) {
7130 err = -ENOENT;
7131 goto out_err;
7132 }
7133
7134 if (!rdev->ops->testmode_dump) {
7135 err = -EOPNOTSUPP;
7136 goto out_err;
7137 }
7138
7139 while (1) {
7140 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7141 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7142 NL80211_CMD_TESTMODE);
7143 struct nlattr *tmdata;
7144
7145 if (!hdr)
7146 break;
7147
7148 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7149 genlmsg_cancel(skb, hdr);
7150 break;
7151 }
7152
7153 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7154 if (!tmdata) {
7155 genlmsg_cancel(skb, hdr);
7156 break;
7157 }
7158 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7159 nla_nest_end(skb, tmdata);
7160
7161 if (err == -ENOBUFS || err == -ENOENT) {
7162 genlmsg_cancel(skb, hdr);
7163 break;
7164 } else if (err) {
7165 genlmsg_cancel(skb, hdr);
7166 goto out_err;
7167 }
7168
7169 genlmsg_end(skb, hdr);
7170 }
7171
7172 err = skb->len;
7173 /* see above */
7174 cb->args[0] = phy_idx + 1;
7175 out_err:
7176 rtnl_unlock();
7177 return err;
7178 }
7179 #endif
7180
7181 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7182 {
7183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7184 struct net_device *dev = info->user_ptr[1];
7185 struct cfg80211_connect_params connect;
7186 struct wiphy *wiphy;
7187 struct cfg80211_cached_keys *connkeys = NULL;
7188 int err;
7189
7190 memset(&connect, 0, sizeof(connect));
7191
7192 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7193 return -EINVAL;
7194
7195 if (!info->attrs[NL80211_ATTR_SSID] ||
7196 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7197 return -EINVAL;
7198
7199 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7200 connect.auth_type =
7201 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7202 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7203 NL80211_CMD_CONNECT))
7204 return -EINVAL;
7205 } else
7206 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7207
7208 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7209
7210 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7211 NL80211_MAX_NR_CIPHER_SUITES);
7212 if (err)
7213 return err;
7214
7215 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7216 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7217 return -EOPNOTSUPP;
7218
7219 wiphy = &rdev->wiphy;
7220
7221 connect.bg_scan_period = -1;
7222 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7223 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7224 connect.bg_scan_period =
7225 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7226 }
7227
7228 if (info->attrs[NL80211_ATTR_MAC])
7229 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7230 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7231 connect.bssid_hint =
7232 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7233 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7234 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7235
7236 if (info->attrs[NL80211_ATTR_IE]) {
7237 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7238 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7239 }
7240
7241 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7242 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7243 if (connect.mfp != NL80211_MFP_REQUIRED &&
7244 connect.mfp != NL80211_MFP_NO)
7245 return -EINVAL;
7246 } else {
7247 connect.mfp = NL80211_MFP_NO;
7248 }
7249
7250 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7251 connect.channel = nl80211_get_valid_chan(
7252 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7253 if (!connect.channel)
7254 return -EINVAL;
7255 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7256 connect.channel_hint = nl80211_get_valid_chan(
7257 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7258 if (!connect.channel_hint)
7259 return -EINVAL;
7260 }
7261
7262 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7263 connkeys = nl80211_parse_connkeys(rdev,
7264 info->attrs[NL80211_ATTR_KEYS], NULL);
7265 if (IS_ERR(connkeys))
7266 return PTR_ERR(connkeys);
7267 }
7268
7269 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7270 connect.flags |= ASSOC_REQ_DISABLE_HT;
7271
7272 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7273 memcpy(&connect.ht_capa_mask,
7274 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7275 sizeof(connect.ht_capa_mask));
7276
7277 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7278 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7279 kzfree(connkeys);
7280 return -EINVAL;
7281 }
7282 memcpy(&connect.ht_capa,
7283 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7284 sizeof(connect.ht_capa));
7285 }
7286
7287 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7288 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7289
7290 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7291 memcpy(&connect.vht_capa_mask,
7292 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7293 sizeof(connect.vht_capa_mask));
7294
7295 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7296 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7297 kzfree(connkeys);
7298 return -EINVAL;
7299 }
7300 memcpy(&connect.vht_capa,
7301 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7302 sizeof(connect.vht_capa));
7303 }
7304
7305 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7306 if (!(rdev->wiphy.features &
7307 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7308 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7309 return -EINVAL;
7310 connect.flags |= ASSOC_REQ_USE_RRM;
7311 }
7312
7313 wdev_lock(dev->ieee80211_ptr);
7314 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7315 wdev_unlock(dev->ieee80211_ptr);
7316 if (err)
7317 kzfree(connkeys);
7318 return err;
7319 }
7320
7321 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7322 {
7323 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7324 struct net_device *dev = info->user_ptr[1];
7325 u16 reason;
7326 int ret;
7327
7328 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7329 reason = WLAN_REASON_DEAUTH_LEAVING;
7330 else
7331 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7332
7333 if (reason == 0)
7334 return -EINVAL;
7335
7336 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7337 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7338 return -EOPNOTSUPP;
7339
7340 wdev_lock(dev->ieee80211_ptr);
7341 ret = cfg80211_disconnect(rdev, dev, reason, true);
7342 wdev_unlock(dev->ieee80211_ptr);
7343 return ret;
7344 }
7345
7346 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7347 {
7348 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7349 struct net *net;
7350 int err;
7351 u32 pid;
7352
7353 if (!info->attrs[NL80211_ATTR_PID])
7354 return -EINVAL;
7355
7356 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7357
7358 net = get_net_ns_by_pid(pid);
7359 if (IS_ERR(net))
7360 return PTR_ERR(net);
7361
7362 err = 0;
7363
7364 /* check if anything to do */
7365 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7366 err = cfg80211_switch_netns(rdev, net);
7367
7368 put_net(net);
7369 return err;
7370 }
7371
7372 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7373 {
7374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7375 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7376 struct cfg80211_pmksa *pmksa) = NULL;
7377 struct net_device *dev = info->user_ptr[1];
7378 struct cfg80211_pmksa pmksa;
7379
7380 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7381
7382 if (!info->attrs[NL80211_ATTR_MAC])
7383 return -EINVAL;
7384
7385 if (!info->attrs[NL80211_ATTR_PMKID])
7386 return -EINVAL;
7387
7388 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7389 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7390
7391 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7392 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7393 return -EOPNOTSUPP;
7394
7395 switch (info->genlhdr->cmd) {
7396 case NL80211_CMD_SET_PMKSA:
7397 rdev_ops = rdev->ops->set_pmksa;
7398 break;
7399 case NL80211_CMD_DEL_PMKSA:
7400 rdev_ops = rdev->ops->del_pmksa;
7401 break;
7402 default:
7403 WARN_ON(1);
7404 break;
7405 }
7406
7407 if (!rdev_ops)
7408 return -EOPNOTSUPP;
7409
7410 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7411 }
7412
7413 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7414 {
7415 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7416 struct net_device *dev = info->user_ptr[1];
7417
7418 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7419 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7420 return -EOPNOTSUPP;
7421
7422 if (!rdev->ops->flush_pmksa)
7423 return -EOPNOTSUPP;
7424
7425 return rdev_flush_pmksa(rdev, dev);
7426 }
7427
7428 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7429 {
7430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7431 struct net_device *dev = info->user_ptr[1];
7432 u8 action_code, dialog_token;
7433 u32 peer_capability = 0;
7434 u16 status_code;
7435 u8 *peer;
7436 bool initiator;
7437
7438 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7439 !rdev->ops->tdls_mgmt)
7440 return -EOPNOTSUPP;
7441
7442 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7443 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7444 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7445 !info->attrs[NL80211_ATTR_IE] ||
7446 !info->attrs[NL80211_ATTR_MAC])
7447 return -EINVAL;
7448
7449 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7450 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7451 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7452 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7453 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7454 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7455 peer_capability =
7456 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7457
7458 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7459 dialog_token, status_code, peer_capability,
7460 initiator,
7461 nla_data(info->attrs[NL80211_ATTR_IE]),
7462 nla_len(info->attrs[NL80211_ATTR_IE]));
7463 }
7464
7465 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7466 {
7467 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7468 struct net_device *dev = info->user_ptr[1];
7469 enum nl80211_tdls_operation operation;
7470 u8 *peer;
7471
7472 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7473 !rdev->ops->tdls_oper)
7474 return -EOPNOTSUPP;
7475
7476 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7477 !info->attrs[NL80211_ATTR_MAC])
7478 return -EINVAL;
7479
7480 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7481 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7482
7483 return rdev_tdls_oper(rdev, dev, peer, operation);
7484 }
7485
7486 static int nl80211_remain_on_channel(struct sk_buff *skb,
7487 struct genl_info *info)
7488 {
7489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7490 struct wireless_dev *wdev = info->user_ptr[1];
7491 struct cfg80211_chan_def chandef;
7492 struct sk_buff *msg;
7493 void *hdr;
7494 u64 cookie;
7495 u32 duration;
7496 int err;
7497
7498 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7499 !info->attrs[NL80211_ATTR_DURATION])
7500 return -EINVAL;
7501
7502 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7503
7504 if (!rdev->ops->remain_on_channel ||
7505 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7506 return -EOPNOTSUPP;
7507
7508 /*
7509 * We should be on that channel for at least a minimum amount of
7510 * time (10ms) but no longer than the driver supports.
7511 */
7512 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7513 duration > rdev->wiphy.max_remain_on_channel_duration)
7514 return -EINVAL;
7515
7516 err = nl80211_parse_chandef(rdev, info, &chandef);
7517 if (err)
7518 return err;
7519
7520 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7521 if (!msg)
7522 return -ENOMEM;
7523
7524 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7525 NL80211_CMD_REMAIN_ON_CHANNEL);
7526 if (!hdr) {
7527 err = -ENOBUFS;
7528 goto free_msg;
7529 }
7530
7531 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7532 duration, &cookie);
7533
7534 if (err)
7535 goto free_msg;
7536
7537 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7538 goto nla_put_failure;
7539
7540 genlmsg_end(msg, hdr);
7541
7542 return genlmsg_reply(msg, info);
7543
7544 nla_put_failure:
7545 err = -ENOBUFS;
7546 free_msg:
7547 nlmsg_free(msg);
7548 return err;
7549 }
7550
7551 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7552 struct genl_info *info)
7553 {
7554 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7555 struct wireless_dev *wdev = info->user_ptr[1];
7556 u64 cookie;
7557
7558 if (!info->attrs[NL80211_ATTR_COOKIE])
7559 return -EINVAL;
7560
7561 if (!rdev->ops->cancel_remain_on_channel)
7562 return -EOPNOTSUPP;
7563
7564 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7565
7566 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7567 }
7568
7569 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7570 u8 *rates, u8 rates_len)
7571 {
7572 u8 i;
7573 u32 mask = 0;
7574
7575 for (i = 0; i < rates_len; i++) {
7576 int rate = (rates[i] & 0x7f) * 5;
7577 int ridx;
7578 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7579 struct ieee80211_rate *srate =
7580 &sband->bitrates[ridx];
7581 if (rate == srate->bitrate) {
7582 mask |= 1 << ridx;
7583 break;
7584 }
7585 }
7586 if (ridx == sband->n_bitrates)
7587 return 0; /* rate not found */
7588 }
7589
7590 return mask;
7591 }
7592
7593 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7594 u8 *rates, u8 rates_len,
7595 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7596 {
7597 u8 i;
7598
7599 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7600
7601 for (i = 0; i < rates_len; i++) {
7602 int ridx, rbit;
7603
7604 ridx = rates[i] / 8;
7605 rbit = BIT(rates[i] % 8);
7606
7607 /* check validity */
7608 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7609 return false;
7610
7611 /* check availability */
7612 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7613 mcs[ridx] |= rbit;
7614 else
7615 return false;
7616 }
7617
7618 return true;
7619 }
7620
7621 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7622 {
7623 u16 mcs_mask = 0;
7624
7625 switch (vht_mcs_map) {
7626 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7627 break;
7628 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7629 mcs_mask = 0x00FF;
7630 break;
7631 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7632 mcs_mask = 0x01FF;
7633 break;
7634 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7635 mcs_mask = 0x03FF;
7636 break;
7637 default:
7638 break;
7639 }
7640
7641 return mcs_mask;
7642 }
7643
7644 static void vht_build_mcs_mask(u16 vht_mcs_map,
7645 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7646 {
7647 u8 nss;
7648
7649 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7650 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7651 vht_mcs_map >>= 2;
7652 }
7653 }
7654
7655 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7656 struct nl80211_txrate_vht *txrate,
7657 u16 mcs[NL80211_VHT_NSS_MAX])
7658 {
7659 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7660 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7661 u8 i;
7662
7663 if (!sband->vht_cap.vht_supported)
7664 return false;
7665
7666 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7667
7668 /* Build vht_mcs_mask from VHT capabilities */
7669 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7670
7671 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7672 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7673 mcs[i] = txrate->mcs[i];
7674 else
7675 return false;
7676 }
7677
7678 return true;
7679 }
7680
7681 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7682 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7683 .len = NL80211_MAX_SUPP_RATES },
7684 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7685 .len = NL80211_MAX_SUPP_HT_RATES },
7686 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7687 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7688 };
7689
7690 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7691 struct genl_info *info)
7692 {
7693 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7694 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7695 struct cfg80211_bitrate_mask mask;
7696 int rem, i;
7697 struct net_device *dev = info->user_ptr[1];
7698 struct nlattr *tx_rates;
7699 struct ieee80211_supported_band *sband;
7700 u16 vht_tx_mcs_map;
7701
7702 if (!rdev->ops->set_bitrate_mask)
7703 return -EOPNOTSUPP;
7704
7705 memset(&mask, 0, sizeof(mask));
7706 /* Default to all rates enabled */
7707 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7708 sband = rdev->wiphy.bands[i];
7709
7710 if (!sband)
7711 continue;
7712
7713 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7714 memcpy(mask.control[i].ht_mcs,
7715 sband->ht_cap.mcs.rx_mask,
7716 sizeof(mask.control[i].ht_mcs));
7717
7718 if (!sband->vht_cap.vht_supported)
7719 continue;
7720
7721 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7722 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7723 }
7724
7725 /* if no rates are given set it back to the defaults */
7726 if (!info->attrs[NL80211_ATTR_TX_RATES])
7727 goto out;
7728
7729 /*
7730 * The nested attribute uses enum nl80211_band as the index. This maps
7731 * directly to the enum ieee80211_band values used in cfg80211.
7732 */
7733 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7734 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7735 enum ieee80211_band band = nla_type(tx_rates);
7736 int err;
7737
7738 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7739 return -EINVAL;
7740 sband = rdev->wiphy.bands[band];
7741 if (sband == NULL)
7742 return -EINVAL;
7743 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7744 nla_len(tx_rates), nl80211_txattr_policy);
7745 if (err)
7746 return err;
7747 if (tb[NL80211_TXRATE_LEGACY]) {
7748 mask.control[band].legacy = rateset_to_mask(
7749 sband,
7750 nla_data(tb[NL80211_TXRATE_LEGACY]),
7751 nla_len(tb[NL80211_TXRATE_LEGACY]));
7752 if ((mask.control[band].legacy == 0) &&
7753 nla_len(tb[NL80211_TXRATE_LEGACY]))
7754 return -EINVAL;
7755 }
7756 if (tb[NL80211_TXRATE_HT]) {
7757 if (!ht_rateset_to_mask(
7758 sband,
7759 nla_data(tb[NL80211_TXRATE_HT]),
7760 nla_len(tb[NL80211_TXRATE_HT]),
7761 mask.control[band].ht_mcs))
7762 return -EINVAL;
7763 }
7764 if (tb[NL80211_TXRATE_VHT]) {
7765 if (!vht_set_mcs_mask(
7766 sband,
7767 nla_data(tb[NL80211_TXRATE_VHT]),
7768 mask.control[band].vht_mcs))
7769 return -EINVAL;
7770 }
7771 if (tb[NL80211_TXRATE_GI]) {
7772 mask.control[band].gi =
7773 nla_get_u8(tb[NL80211_TXRATE_GI]);
7774 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7775 return -EINVAL;
7776 }
7777
7778 if (mask.control[band].legacy == 0) {
7779 /* don't allow empty legacy rates if HT or VHT
7780 * are not even supported.
7781 */
7782 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7783 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7784 return -EINVAL;
7785
7786 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7787 if (mask.control[band].ht_mcs[i])
7788 goto out;
7789
7790 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7791 if (mask.control[band].vht_mcs[i])
7792 goto out;
7793
7794 /* legacy and mcs rates may not be both empty */
7795 return -EINVAL;
7796 }
7797 }
7798
7799 out:
7800 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7801 }
7802
7803 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7804 {
7805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7806 struct wireless_dev *wdev = info->user_ptr[1];
7807 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7808
7809 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7810 return -EINVAL;
7811
7812 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7813 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7814
7815 switch (wdev->iftype) {
7816 case NL80211_IFTYPE_STATION:
7817 case NL80211_IFTYPE_ADHOC:
7818 case NL80211_IFTYPE_P2P_CLIENT:
7819 case NL80211_IFTYPE_AP:
7820 case NL80211_IFTYPE_AP_VLAN:
7821 case NL80211_IFTYPE_MESH_POINT:
7822 case NL80211_IFTYPE_P2P_GO:
7823 case NL80211_IFTYPE_P2P_DEVICE:
7824 break;
7825 default:
7826 return -EOPNOTSUPP;
7827 }
7828
7829 /* not much point in registering if we can't reply */
7830 if (!rdev->ops->mgmt_tx)
7831 return -EOPNOTSUPP;
7832
7833 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7834 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7835 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7836 }
7837
7838 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7839 {
7840 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7841 struct wireless_dev *wdev = info->user_ptr[1];
7842 struct cfg80211_chan_def chandef;
7843 int err;
7844 void *hdr = NULL;
7845 u64 cookie;
7846 struct sk_buff *msg = NULL;
7847 struct cfg80211_mgmt_tx_params params = {
7848 .dont_wait_for_ack =
7849 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7850 };
7851
7852 if (!info->attrs[NL80211_ATTR_FRAME])
7853 return -EINVAL;
7854
7855 if (!rdev->ops->mgmt_tx)
7856 return -EOPNOTSUPP;
7857
7858 switch (wdev->iftype) {
7859 case NL80211_IFTYPE_P2P_DEVICE:
7860 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7861 return -EINVAL;
7862 case NL80211_IFTYPE_STATION:
7863 case NL80211_IFTYPE_ADHOC:
7864 case NL80211_IFTYPE_P2P_CLIENT:
7865 case NL80211_IFTYPE_AP:
7866 case NL80211_IFTYPE_AP_VLAN:
7867 case NL80211_IFTYPE_MESH_POINT:
7868 case NL80211_IFTYPE_P2P_GO:
7869 break;
7870 default:
7871 return -EOPNOTSUPP;
7872 }
7873
7874 if (info->attrs[NL80211_ATTR_DURATION]) {
7875 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7876 return -EINVAL;
7877 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7878
7879 /*
7880 * We should wait on the channel for at least a minimum amount
7881 * of time (10ms) but no longer than the driver supports.
7882 */
7883 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7884 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7885 return -EINVAL;
7886
7887 }
7888
7889 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7890
7891 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7892 return -EINVAL;
7893
7894 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7895
7896 /* get the channel if any has been specified, otherwise pass NULL to
7897 * the driver. The latter will use the current one
7898 */
7899 chandef.chan = NULL;
7900 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7901 err = nl80211_parse_chandef(rdev, info, &chandef);
7902 if (err)
7903 return err;
7904 }
7905
7906 if (!chandef.chan && params.offchan)
7907 return -EINVAL;
7908
7909 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7910 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7911
7912 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
7913 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
7914 int i;
7915
7916 if (len % sizeof(u16))
7917 return -EINVAL;
7918
7919 params.n_csa_offsets = len / sizeof(u16);
7920 params.csa_offsets =
7921 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
7922
7923 /* check that all the offsets fit the frame */
7924 for (i = 0; i < params.n_csa_offsets; i++) {
7925 if (params.csa_offsets[i] >= params.len)
7926 return -EINVAL;
7927 }
7928 }
7929
7930 if (!params.dont_wait_for_ack) {
7931 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7932 if (!msg)
7933 return -ENOMEM;
7934
7935 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7936 NL80211_CMD_FRAME);
7937 if (!hdr) {
7938 err = -ENOBUFS;
7939 goto free_msg;
7940 }
7941 }
7942
7943 params.chan = chandef.chan;
7944 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7945 if (err)
7946 goto free_msg;
7947
7948 if (msg) {
7949 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7950 goto nla_put_failure;
7951
7952 genlmsg_end(msg, hdr);
7953 return genlmsg_reply(msg, info);
7954 }
7955
7956 return 0;
7957
7958 nla_put_failure:
7959 err = -ENOBUFS;
7960 free_msg:
7961 nlmsg_free(msg);
7962 return err;
7963 }
7964
7965 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7966 {
7967 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7968 struct wireless_dev *wdev = info->user_ptr[1];
7969 u64 cookie;
7970
7971 if (!info->attrs[NL80211_ATTR_COOKIE])
7972 return -EINVAL;
7973
7974 if (!rdev->ops->mgmt_tx_cancel_wait)
7975 return -EOPNOTSUPP;
7976
7977 switch (wdev->iftype) {
7978 case NL80211_IFTYPE_STATION:
7979 case NL80211_IFTYPE_ADHOC:
7980 case NL80211_IFTYPE_P2P_CLIENT:
7981 case NL80211_IFTYPE_AP:
7982 case NL80211_IFTYPE_AP_VLAN:
7983 case NL80211_IFTYPE_P2P_GO:
7984 case NL80211_IFTYPE_P2P_DEVICE:
7985 break;
7986 default:
7987 return -EOPNOTSUPP;
7988 }
7989
7990 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7991
7992 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7993 }
7994
7995 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7996 {
7997 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7998 struct wireless_dev *wdev;
7999 struct net_device *dev = info->user_ptr[1];
8000 u8 ps_state;
8001 bool state;
8002 int err;
8003
8004 if (!info->attrs[NL80211_ATTR_PS_STATE])
8005 return -EINVAL;
8006
8007 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8008
8009 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8010 return -EINVAL;
8011
8012 wdev = dev->ieee80211_ptr;
8013
8014 if (!rdev->ops->set_power_mgmt)
8015 return -EOPNOTSUPP;
8016
8017 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8018
8019 if (state == wdev->ps)
8020 return 0;
8021
8022 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8023 if (!err)
8024 wdev->ps = state;
8025 return err;
8026 }
8027
8028 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8029 {
8030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8031 enum nl80211_ps_state ps_state;
8032 struct wireless_dev *wdev;
8033 struct net_device *dev = info->user_ptr[1];
8034 struct sk_buff *msg;
8035 void *hdr;
8036 int err;
8037
8038 wdev = dev->ieee80211_ptr;
8039
8040 if (!rdev->ops->set_power_mgmt)
8041 return -EOPNOTSUPP;
8042
8043 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8044 if (!msg)
8045 return -ENOMEM;
8046
8047 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8048 NL80211_CMD_GET_POWER_SAVE);
8049 if (!hdr) {
8050 err = -ENOBUFS;
8051 goto free_msg;
8052 }
8053
8054 if (wdev->ps)
8055 ps_state = NL80211_PS_ENABLED;
8056 else
8057 ps_state = NL80211_PS_DISABLED;
8058
8059 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8060 goto nla_put_failure;
8061
8062 genlmsg_end(msg, hdr);
8063 return genlmsg_reply(msg, info);
8064
8065 nla_put_failure:
8066 err = -ENOBUFS;
8067 free_msg:
8068 nlmsg_free(msg);
8069 return err;
8070 }
8071
8072 static const struct nla_policy
8073 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8074 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8075 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8076 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8077 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8078 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8079 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8080 };
8081
8082 static int nl80211_set_cqm_txe(struct genl_info *info,
8083 u32 rate, u32 pkts, u32 intvl)
8084 {
8085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8086 struct net_device *dev = info->user_ptr[1];
8087 struct wireless_dev *wdev = dev->ieee80211_ptr;
8088
8089 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8090 return -EINVAL;
8091
8092 if (!rdev->ops->set_cqm_txe_config)
8093 return -EOPNOTSUPP;
8094
8095 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8096 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8097 return -EOPNOTSUPP;
8098
8099 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8100 }
8101
8102 static int nl80211_set_cqm_rssi(struct genl_info *info,
8103 s32 threshold, u32 hysteresis)
8104 {
8105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8106 struct net_device *dev = info->user_ptr[1];
8107 struct wireless_dev *wdev = dev->ieee80211_ptr;
8108
8109 if (threshold > 0)
8110 return -EINVAL;
8111
8112 /* disabling - hysteresis should also be zero then */
8113 if (threshold == 0)
8114 hysteresis = 0;
8115
8116 if (!rdev->ops->set_cqm_rssi_config)
8117 return -EOPNOTSUPP;
8118
8119 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8120 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8121 return -EOPNOTSUPP;
8122
8123 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8124 }
8125
8126 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8127 {
8128 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8129 struct nlattr *cqm;
8130 int err;
8131
8132 cqm = info->attrs[NL80211_ATTR_CQM];
8133 if (!cqm)
8134 return -EINVAL;
8135
8136 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8137 nl80211_attr_cqm_policy);
8138 if (err)
8139 return err;
8140
8141 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8142 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8143 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8144 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8145
8146 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8147 }
8148
8149 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8150 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8151 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8152 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8153 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8154 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8155
8156 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8157 }
8158
8159 return -EINVAL;
8160 }
8161
8162 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8163 {
8164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8165 struct net_device *dev = info->user_ptr[1];
8166 struct mesh_config cfg;
8167 struct mesh_setup setup;
8168 int err;
8169
8170 /* start with default */
8171 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8172 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8173
8174 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8175 /* and parse parameters if given */
8176 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8177 if (err)
8178 return err;
8179 }
8180
8181 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8182 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8183 return -EINVAL;
8184
8185 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8186 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8187
8188 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8189 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8190 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8191 return -EINVAL;
8192
8193 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8194 setup.beacon_interval =
8195 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8196 if (setup.beacon_interval < 10 ||
8197 setup.beacon_interval > 10000)
8198 return -EINVAL;
8199 }
8200
8201 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8202 setup.dtim_period =
8203 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8204 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8205 return -EINVAL;
8206 }
8207
8208 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8209 /* parse additional setup parameters if given */
8210 err = nl80211_parse_mesh_setup(info, &setup);
8211 if (err)
8212 return err;
8213 }
8214
8215 if (setup.user_mpm)
8216 cfg.auto_open_plinks = false;
8217
8218 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8219 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8220 if (err)
8221 return err;
8222 } else {
8223 /* cfg80211_join_mesh() will sort it out */
8224 setup.chandef.chan = NULL;
8225 }
8226
8227 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8228 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8229 int n_rates =
8230 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8231 struct ieee80211_supported_band *sband;
8232
8233 if (!setup.chandef.chan)
8234 return -EINVAL;
8235
8236 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8237
8238 err = ieee80211_get_ratemask(sband, rates, n_rates,
8239 &setup.basic_rates);
8240 if (err)
8241 return err;
8242 }
8243
8244 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8245 }
8246
8247 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8248 {
8249 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8250 struct net_device *dev = info->user_ptr[1];
8251
8252 return cfg80211_leave_mesh(rdev, dev);
8253 }
8254
8255 #ifdef CONFIG_PM
8256 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8257 struct cfg80211_registered_device *rdev)
8258 {
8259 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8260 struct nlattr *nl_pats, *nl_pat;
8261 int i, pat_len;
8262
8263 if (!wowlan->n_patterns)
8264 return 0;
8265
8266 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8267 if (!nl_pats)
8268 return -ENOBUFS;
8269
8270 for (i = 0; i < wowlan->n_patterns; i++) {
8271 nl_pat = nla_nest_start(msg, i + 1);
8272 if (!nl_pat)
8273 return -ENOBUFS;
8274 pat_len = wowlan->patterns[i].pattern_len;
8275 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8276 wowlan->patterns[i].mask) ||
8277 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8278 wowlan->patterns[i].pattern) ||
8279 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8280 wowlan->patterns[i].pkt_offset))
8281 return -ENOBUFS;
8282 nla_nest_end(msg, nl_pat);
8283 }
8284 nla_nest_end(msg, nl_pats);
8285
8286 return 0;
8287 }
8288
8289 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8290 struct cfg80211_wowlan_tcp *tcp)
8291 {
8292 struct nlattr *nl_tcp;
8293
8294 if (!tcp)
8295 return 0;
8296
8297 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8298 if (!nl_tcp)
8299 return -ENOBUFS;
8300
8301 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8302 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8303 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8304 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8305 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8306 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8307 tcp->payload_len, tcp->payload) ||
8308 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8309 tcp->data_interval) ||
8310 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8311 tcp->wake_len, tcp->wake_data) ||
8312 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8313 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8314 return -ENOBUFS;
8315
8316 if (tcp->payload_seq.len &&
8317 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8318 sizeof(tcp->payload_seq), &tcp->payload_seq))
8319 return -ENOBUFS;
8320
8321 if (tcp->payload_tok.len &&
8322 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8323 sizeof(tcp->payload_tok) + tcp->tokens_size,
8324 &tcp->payload_tok))
8325 return -ENOBUFS;
8326
8327 nla_nest_end(msg, nl_tcp);
8328
8329 return 0;
8330 }
8331
8332 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8333 {
8334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8335 struct sk_buff *msg;
8336 void *hdr;
8337 u32 size = NLMSG_DEFAULT_SIZE;
8338
8339 if (!rdev->wiphy.wowlan)
8340 return -EOPNOTSUPP;
8341
8342 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8343 /* adjust size to have room for all the data */
8344 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8345 rdev->wiphy.wowlan_config->tcp->payload_len +
8346 rdev->wiphy.wowlan_config->tcp->wake_len +
8347 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8348 }
8349
8350 msg = nlmsg_new(size, GFP_KERNEL);
8351 if (!msg)
8352 return -ENOMEM;
8353
8354 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8355 NL80211_CMD_GET_WOWLAN);
8356 if (!hdr)
8357 goto nla_put_failure;
8358
8359 if (rdev->wiphy.wowlan_config) {
8360 struct nlattr *nl_wowlan;
8361
8362 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8363 if (!nl_wowlan)
8364 goto nla_put_failure;
8365
8366 if ((rdev->wiphy.wowlan_config->any &&
8367 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8368 (rdev->wiphy.wowlan_config->disconnect &&
8369 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8370 (rdev->wiphy.wowlan_config->magic_pkt &&
8371 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8372 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8373 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8374 (rdev->wiphy.wowlan_config->eap_identity_req &&
8375 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8376 (rdev->wiphy.wowlan_config->four_way_handshake &&
8377 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8378 (rdev->wiphy.wowlan_config->rfkill_release &&
8379 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8380 goto nla_put_failure;
8381
8382 if (nl80211_send_wowlan_patterns(msg, rdev))
8383 goto nla_put_failure;
8384
8385 if (nl80211_send_wowlan_tcp(msg,
8386 rdev->wiphy.wowlan_config->tcp))
8387 goto nla_put_failure;
8388
8389 nla_nest_end(msg, nl_wowlan);
8390 }
8391
8392 genlmsg_end(msg, hdr);
8393 return genlmsg_reply(msg, info);
8394
8395 nla_put_failure:
8396 nlmsg_free(msg);
8397 return -ENOBUFS;
8398 }
8399
8400 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8401 struct nlattr *attr,
8402 struct cfg80211_wowlan *trig)
8403 {
8404 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8405 struct cfg80211_wowlan_tcp *cfg;
8406 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8407 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8408 u32 size;
8409 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8410 int err, port;
8411
8412 if (!rdev->wiphy.wowlan->tcp)
8413 return -EINVAL;
8414
8415 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8416 nla_data(attr), nla_len(attr),
8417 nl80211_wowlan_tcp_policy);
8418 if (err)
8419 return err;
8420
8421 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8422 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8423 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8424 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8425 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8426 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8427 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8428 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8429 return -EINVAL;
8430
8431 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8432 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8433 return -EINVAL;
8434
8435 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8436 rdev->wiphy.wowlan->tcp->data_interval_max ||
8437 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8438 return -EINVAL;
8439
8440 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8441 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8442 return -EINVAL;
8443
8444 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8445 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8446 return -EINVAL;
8447
8448 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8449 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8450
8451 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8452 tokens_size = tokln - sizeof(*tok);
8453
8454 if (!tok->len || tokens_size % tok->len)
8455 return -EINVAL;
8456 if (!rdev->wiphy.wowlan->tcp->tok)
8457 return -EINVAL;
8458 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8459 return -EINVAL;
8460 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8461 return -EINVAL;
8462 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8463 return -EINVAL;
8464 if (tok->offset + tok->len > data_size)
8465 return -EINVAL;
8466 }
8467
8468 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8469 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8470 if (!rdev->wiphy.wowlan->tcp->seq)
8471 return -EINVAL;
8472 if (seq->len == 0 || seq->len > 4)
8473 return -EINVAL;
8474 if (seq->len + seq->offset > data_size)
8475 return -EINVAL;
8476 }
8477
8478 size = sizeof(*cfg);
8479 size += data_size;
8480 size += wake_size + wake_mask_size;
8481 size += tokens_size;
8482
8483 cfg = kzalloc(size, GFP_KERNEL);
8484 if (!cfg)
8485 return -ENOMEM;
8486 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8487 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8488 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8489 ETH_ALEN);
8490 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8491 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8492 else
8493 port = 0;
8494 #ifdef CONFIG_INET
8495 /* allocate a socket and port for it and use it */
8496 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8497 IPPROTO_TCP, &cfg->sock, 1);
8498 if (err) {
8499 kfree(cfg);
8500 return err;
8501 }
8502 if (inet_csk_get_port(cfg->sock->sk, port)) {
8503 sock_release(cfg->sock);
8504 kfree(cfg);
8505 return -EADDRINUSE;
8506 }
8507 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8508 #else
8509 if (!port) {
8510 kfree(cfg);
8511 return -EINVAL;
8512 }
8513 cfg->src_port = port;
8514 #endif
8515
8516 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8517 cfg->payload_len = data_size;
8518 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8519 memcpy((void *)cfg->payload,
8520 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8521 data_size);
8522 if (seq)
8523 cfg->payload_seq = *seq;
8524 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8525 cfg->wake_len = wake_size;
8526 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8527 memcpy((void *)cfg->wake_data,
8528 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8529 wake_size);
8530 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8531 data_size + wake_size;
8532 memcpy((void *)cfg->wake_mask,
8533 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8534 wake_mask_size);
8535 if (tok) {
8536 cfg->tokens_size = tokens_size;
8537 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8538 }
8539
8540 trig->tcp = cfg;
8541
8542 return 0;
8543 }
8544
8545 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8546 {
8547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8548 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8549 struct cfg80211_wowlan new_triggers = {};
8550 struct cfg80211_wowlan *ntrig;
8551 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8552 int err, i;
8553 bool prev_enabled = rdev->wiphy.wowlan_config;
8554
8555 if (!wowlan)
8556 return -EOPNOTSUPP;
8557
8558 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8559 cfg80211_rdev_free_wowlan(rdev);
8560 rdev->wiphy.wowlan_config = NULL;
8561 goto set_wakeup;
8562 }
8563
8564 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8565 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8566 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8567 nl80211_wowlan_policy);
8568 if (err)
8569 return err;
8570
8571 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8572 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8573 return -EINVAL;
8574 new_triggers.any = true;
8575 }
8576
8577 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8578 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8579 return -EINVAL;
8580 new_triggers.disconnect = true;
8581 }
8582
8583 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8584 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8585 return -EINVAL;
8586 new_triggers.magic_pkt = true;
8587 }
8588
8589 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8590 return -EINVAL;
8591
8592 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8593 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8594 return -EINVAL;
8595 new_triggers.gtk_rekey_failure = true;
8596 }
8597
8598 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8599 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8600 return -EINVAL;
8601 new_triggers.eap_identity_req = true;
8602 }
8603
8604 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8605 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8606 return -EINVAL;
8607 new_triggers.four_way_handshake = true;
8608 }
8609
8610 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8611 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8612 return -EINVAL;
8613 new_triggers.rfkill_release = true;
8614 }
8615
8616 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8617 struct nlattr *pat;
8618 int n_patterns = 0;
8619 int rem, pat_len, mask_len, pkt_offset;
8620 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8621
8622 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8623 rem)
8624 n_patterns++;
8625 if (n_patterns > wowlan->n_patterns)
8626 return -EINVAL;
8627
8628 new_triggers.patterns = kcalloc(n_patterns,
8629 sizeof(new_triggers.patterns[0]),
8630 GFP_KERNEL);
8631 if (!new_triggers.patterns)
8632 return -ENOMEM;
8633
8634 new_triggers.n_patterns = n_patterns;
8635 i = 0;
8636
8637 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8638 rem) {
8639 u8 *mask_pat;
8640
8641 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8642 nla_len(pat), NULL);
8643 err = -EINVAL;
8644 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8645 !pat_tb[NL80211_PKTPAT_PATTERN])
8646 goto error;
8647 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8648 mask_len = DIV_ROUND_UP(pat_len, 8);
8649 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8650 goto error;
8651 if (pat_len > wowlan->pattern_max_len ||
8652 pat_len < wowlan->pattern_min_len)
8653 goto error;
8654
8655 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8656 pkt_offset = 0;
8657 else
8658 pkt_offset = nla_get_u32(
8659 pat_tb[NL80211_PKTPAT_OFFSET]);
8660 if (pkt_offset > wowlan->max_pkt_offset)
8661 goto error;
8662 new_triggers.patterns[i].pkt_offset = pkt_offset;
8663
8664 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8665 if (!mask_pat) {
8666 err = -ENOMEM;
8667 goto error;
8668 }
8669 new_triggers.patterns[i].mask = mask_pat;
8670 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8671 mask_len);
8672 mask_pat += mask_len;
8673 new_triggers.patterns[i].pattern = mask_pat;
8674 new_triggers.patterns[i].pattern_len = pat_len;
8675 memcpy(mask_pat,
8676 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8677 pat_len);
8678 i++;
8679 }
8680 }
8681
8682 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8683 err = nl80211_parse_wowlan_tcp(
8684 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8685 &new_triggers);
8686 if (err)
8687 goto error;
8688 }
8689
8690 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8691 if (!ntrig) {
8692 err = -ENOMEM;
8693 goto error;
8694 }
8695 cfg80211_rdev_free_wowlan(rdev);
8696 rdev->wiphy.wowlan_config = ntrig;
8697
8698 set_wakeup:
8699 if (rdev->ops->set_wakeup &&
8700 prev_enabled != !!rdev->wiphy.wowlan_config)
8701 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8702
8703 return 0;
8704 error:
8705 for (i = 0; i < new_triggers.n_patterns; i++)
8706 kfree(new_triggers.patterns[i].mask);
8707 kfree(new_triggers.patterns);
8708 if (new_triggers.tcp && new_triggers.tcp->sock)
8709 sock_release(new_triggers.tcp->sock);
8710 kfree(new_triggers.tcp);
8711 return err;
8712 }
8713 #endif
8714
8715 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8716 struct cfg80211_registered_device *rdev)
8717 {
8718 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8719 int i, j, pat_len;
8720 struct cfg80211_coalesce_rules *rule;
8721
8722 if (!rdev->coalesce->n_rules)
8723 return 0;
8724
8725 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8726 if (!nl_rules)
8727 return -ENOBUFS;
8728
8729 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8730 nl_rule = nla_nest_start(msg, i + 1);
8731 if (!nl_rule)
8732 return -ENOBUFS;
8733
8734 rule = &rdev->coalesce->rules[i];
8735 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8736 rule->delay))
8737 return -ENOBUFS;
8738
8739 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8740 rule->condition))
8741 return -ENOBUFS;
8742
8743 nl_pats = nla_nest_start(msg,
8744 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8745 if (!nl_pats)
8746 return -ENOBUFS;
8747
8748 for (j = 0; j < rule->n_patterns; j++) {
8749 nl_pat = nla_nest_start(msg, j + 1);
8750 if (!nl_pat)
8751 return -ENOBUFS;
8752 pat_len = rule->patterns[j].pattern_len;
8753 if (nla_put(msg, NL80211_PKTPAT_MASK,
8754 DIV_ROUND_UP(pat_len, 8),
8755 rule->patterns[j].mask) ||
8756 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8757 rule->patterns[j].pattern) ||
8758 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8759 rule->patterns[j].pkt_offset))
8760 return -ENOBUFS;
8761 nla_nest_end(msg, nl_pat);
8762 }
8763 nla_nest_end(msg, nl_pats);
8764 nla_nest_end(msg, nl_rule);
8765 }
8766 nla_nest_end(msg, nl_rules);
8767
8768 return 0;
8769 }
8770
8771 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8772 {
8773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8774 struct sk_buff *msg;
8775 void *hdr;
8776
8777 if (!rdev->wiphy.coalesce)
8778 return -EOPNOTSUPP;
8779
8780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8781 if (!msg)
8782 return -ENOMEM;
8783
8784 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8785 NL80211_CMD_GET_COALESCE);
8786 if (!hdr)
8787 goto nla_put_failure;
8788
8789 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8790 goto nla_put_failure;
8791
8792 genlmsg_end(msg, hdr);
8793 return genlmsg_reply(msg, info);
8794
8795 nla_put_failure:
8796 nlmsg_free(msg);
8797 return -ENOBUFS;
8798 }
8799
8800 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8801 {
8802 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8803 int i, j;
8804 struct cfg80211_coalesce_rules *rule;
8805
8806 if (!coalesce)
8807 return;
8808
8809 for (i = 0; i < coalesce->n_rules; i++) {
8810 rule = &coalesce->rules[i];
8811 for (j = 0; j < rule->n_patterns; j++)
8812 kfree(rule->patterns[j].mask);
8813 kfree(rule->patterns);
8814 }
8815 kfree(coalesce->rules);
8816 kfree(coalesce);
8817 rdev->coalesce = NULL;
8818 }
8819
8820 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8821 struct nlattr *rule,
8822 struct cfg80211_coalesce_rules *new_rule)
8823 {
8824 int err, i;
8825 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8826 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8827 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8828 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8829
8830 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8831 nla_len(rule), nl80211_coalesce_policy);
8832 if (err)
8833 return err;
8834
8835 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8836 new_rule->delay =
8837 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8838 if (new_rule->delay > coalesce->max_delay)
8839 return -EINVAL;
8840
8841 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8842 new_rule->condition =
8843 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8844 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8845 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8846 return -EINVAL;
8847
8848 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8849 return -EINVAL;
8850
8851 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8852 rem)
8853 n_patterns++;
8854 if (n_patterns > coalesce->n_patterns)
8855 return -EINVAL;
8856
8857 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8858 GFP_KERNEL);
8859 if (!new_rule->patterns)
8860 return -ENOMEM;
8861
8862 new_rule->n_patterns = n_patterns;
8863 i = 0;
8864
8865 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8866 rem) {
8867 u8 *mask_pat;
8868
8869 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8870 nla_len(pat), NULL);
8871 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8872 !pat_tb[NL80211_PKTPAT_PATTERN])
8873 return -EINVAL;
8874 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8875 mask_len = DIV_ROUND_UP(pat_len, 8);
8876 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8877 return -EINVAL;
8878 if (pat_len > coalesce->pattern_max_len ||
8879 pat_len < coalesce->pattern_min_len)
8880 return -EINVAL;
8881
8882 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8883 pkt_offset = 0;
8884 else
8885 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8886 if (pkt_offset > coalesce->max_pkt_offset)
8887 return -EINVAL;
8888 new_rule->patterns[i].pkt_offset = pkt_offset;
8889
8890 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8891 if (!mask_pat)
8892 return -ENOMEM;
8893
8894 new_rule->patterns[i].mask = mask_pat;
8895 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8896 mask_len);
8897
8898 mask_pat += mask_len;
8899 new_rule->patterns[i].pattern = mask_pat;
8900 new_rule->patterns[i].pattern_len = pat_len;
8901 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8902 pat_len);
8903 i++;
8904 }
8905
8906 return 0;
8907 }
8908
8909 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8910 {
8911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8912 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8913 struct cfg80211_coalesce new_coalesce = {};
8914 struct cfg80211_coalesce *n_coalesce;
8915 int err, rem_rule, n_rules = 0, i, j;
8916 struct nlattr *rule;
8917 struct cfg80211_coalesce_rules *tmp_rule;
8918
8919 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8920 return -EOPNOTSUPP;
8921
8922 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8923 cfg80211_rdev_free_coalesce(rdev);
8924 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8925 return 0;
8926 }
8927
8928 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8929 rem_rule)
8930 n_rules++;
8931 if (n_rules > coalesce->n_rules)
8932 return -EINVAL;
8933
8934 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8935 GFP_KERNEL);
8936 if (!new_coalesce.rules)
8937 return -ENOMEM;
8938
8939 new_coalesce.n_rules = n_rules;
8940 i = 0;
8941
8942 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8943 rem_rule) {
8944 err = nl80211_parse_coalesce_rule(rdev, rule,
8945 &new_coalesce.rules[i]);
8946 if (err)
8947 goto error;
8948
8949 i++;
8950 }
8951
8952 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8953 if (err)
8954 goto error;
8955
8956 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8957 if (!n_coalesce) {
8958 err = -ENOMEM;
8959 goto error;
8960 }
8961 cfg80211_rdev_free_coalesce(rdev);
8962 rdev->coalesce = n_coalesce;
8963
8964 return 0;
8965 error:
8966 for (i = 0; i < new_coalesce.n_rules; i++) {
8967 tmp_rule = &new_coalesce.rules[i];
8968 for (j = 0; j < tmp_rule->n_patterns; j++)
8969 kfree(tmp_rule->patterns[j].mask);
8970 kfree(tmp_rule->patterns);
8971 }
8972 kfree(new_coalesce.rules);
8973
8974 return err;
8975 }
8976
8977 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8978 {
8979 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8980 struct net_device *dev = info->user_ptr[1];
8981 struct wireless_dev *wdev = dev->ieee80211_ptr;
8982 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8983 struct cfg80211_gtk_rekey_data rekey_data;
8984 int err;
8985
8986 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8987 return -EINVAL;
8988
8989 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8990 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8991 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8992 nl80211_rekey_policy);
8993 if (err)
8994 return err;
8995
8996 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8997 return -ERANGE;
8998 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8999 return -ERANGE;
9000 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9001 return -ERANGE;
9002
9003 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9004 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9005 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9006
9007 wdev_lock(wdev);
9008 if (!wdev->current_bss) {
9009 err = -ENOTCONN;
9010 goto out;
9011 }
9012
9013 if (!rdev->ops->set_rekey_data) {
9014 err = -EOPNOTSUPP;
9015 goto out;
9016 }
9017
9018 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9019 out:
9020 wdev_unlock(wdev);
9021 return err;
9022 }
9023
9024 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9025 struct genl_info *info)
9026 {
9027 struct net_device *dev = info->user_ptr[1];
9028 struct wireless_dev *wdev = dev->ieee80211_ptr;
9029
9030 if (wdev->iftype != NL80211_IFTYPE_AP &&
9031 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9032 return -EINVAL;
9033
9034 if (wdev->ap_unexpected_nlportid)
9035 return -EBUSY;
9036
9037 wdev->ap_unexpected_nlportid = info->snd_portid;
9038 return 0;
9039 }
9040
9041 static int nl80211_probe_client(struct sk_buff *skb,
9042 struct genl_info *info)
9043 {
9044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9045 struct net_device *dev = info->user_ptr[1];
9046 struct wireless_dev *wdev = dev->ieee80211_ptr;
9047 struct sk_buff *msg;
9048 void *hdr;
9049 const u8 *addr;
9050 u64 cookie;
9051 int err;
9052
9053 if (wdev->iftype != NL80211_IFTYPE_AP &&
9054 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9055 return -EOPNOTSUPP;
9056
9057 if (!info->attrs[NL80211_ATTR_MAC])
9058 return -EINVAL;
9059
9060 if (!rdev->ops->probe_client)
9061 return -EOPNOTSUPP;
9062
9063 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9064 if (!msg)
9065 return -ENOMEM;
9066
9067 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9068 NL80211_CMD_PROBE_CLIENT);
9069 if (!hdr) {
9070 err = -ENOBUFS;
9071 goto free_msg;
9072 }
9073
9074 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9075
9076 err = rdev_probe_client(rdev, dev, addr, &cookie);
9077 if (err)
9078 goto free_msg;
9079
9080 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9081 goto nla_put_failure;
9082
9083 genlmsg_end(msg, hdr);
9084
9085 return genlmsg_reply(msg, info);
9086
9087 nla_put_failure:
9088 err = -ENOBUFS;
9089 free_msg:
9090 nlmsg_free(msg);
9091 return err;
9092 }
9093
9094 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9095 {
9096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9097 struct cfg80211_beacon_registration *reg, *nreg;
9098 int rv;
9099
9100 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9101 return -EOPNOTSUPP;
9102
9103 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9104 if (!nreg)
9105 return -ENOMEM;
9106
9107 /* First, check if already registered. */
9108 spin_lock_bh(&rdev->beacon_registrations_lock);
9109 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9110 if (reg->nlportid == info->snd_portid) {
9111 rv = -EALREADY;
9112 goto out_err;
9113 }
9114 }
9115 /* Add it to the list */
9116 nreg->nlportid = info->snd_portid;
9117 list_add(&nreg->list, &rdev->beacon_registrations);
9118
9119 spin_unlock_bh(&rdev->beacon_registrations_lock);
9120
9121 return 0;
9122 out_err:
9123 spin_unlock_bh(&rdev->beacon_registrations_lock);
9124 kfree(nreg);
9125 return rv;
9126 }
9127
9128 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9129 {
9130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9131 struct wireless_dev *wdev = info->user_ptr[1];
9132 int err;
9133
9134 if (!rdev->ops->start_p2p_device)
9135 return -EOPNOTSUPP;
9136
9137 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9138 return -EOPNOTSUPP;
9139
9140 if (wdev->p2p_started)
9141 return 0;
9142
9143 if (rfkill_blocked(rdev->rfkill))
9144 return -ERFKILL;
9145
9146 err = rdev_start_p2p_device(rdev, wdev);
9147 if (err)
9148 return err;
9149
9150 wdev->p2p_started = true;
9151 rdev->opencount++;
9152
9153 return 0;
9154 }
9155
9156 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9157 {
9158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9159 struct wireless_dev *wdev = info->user_ptr[1];
9160
9161 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9162 return -EOPNOTSUPP;
9163
9164 if (!rdev->ops->stop_p2p_device)
9165 return -EOPNOTSUPP;
9166
9167 cfg80211_stop_p2p_device(rdev, wdev);
9168
9169 return 0;
9170 }
9171
9172 static int nl80211_get_protocol_features(struct sk_buff *skb,
9173 struct genl_info *info)
9174 {
9175 void *hdr;
9176 struct sk_buff *msg;
9177
9178 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9179 if (!msg)
9180 return -ENOMEM;
9181
9182 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9183 NL80211_CMD_GET_PROTOCOL_FEATURES);
9184 if (!hdr)
9185 goto nla_put_failure;
9186
9187 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9188 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9189 goto nla_put_failure;
9190
9191 genlmsg_end(msg, hdr);
9192 return genlmsg_reply(msg, info);
9193
9194 nla_put_failure:
9195 kfree_skb(msg);
9196 return -ENOBUFS;
9197 }
9198
9199 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9200 {
9201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9202 struct cfg80211_update_ft_ies_params ft_params;
9203 struct net_device *dev = info->user_ptr[1];
9204
9205 if (!rdev->ops->update_ft_ies)
9206 return -EOPNOTSUPP;
9207
9208 if (!info->attrs[NL80211_ATTR_MDID] ||
9209 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9210 return -EINVAL;
9211
9212 memset(&ft_params, 0, sizeof(ft_params));
9213 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9214 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9215 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9216
9217 return rdev_update_ft_ies(rdev, dev, &ft_params);
9218 }
9219
9220 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9221 struct genl_info *info)
9222 {
9223 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9224 struct wireless_dev *wdev = info->user_ptr[1];
9225 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9226 u16 duration;
9227 int ret;
9228
9229 if (!rdev->ops->crit_proto_start)
9230 return -EOPNOTSUPP;
9231
9232 if (WARN_ON(!rdev->ops->crit_proto_stop))
9233 return -EINVAL;
9234
9235 if (rdev->crit_proto_nlportid)
9236 return -EBUSY;
9237
9238 /* determine protocol if provided */
9239 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9240 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9241
9242 if (proto >= NUM_NL80211_CRIT_PROTO)
9243 return -EINVAL;
9244
9245 /* timeout must be provided */
9246 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9247 return -EINVAL;
9248
9249 duration =
9250 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9251
9252 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9253 return -ERANGE;
9254
9255 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9256 if (!ret)
9257 rdev->crit_proto_nlportid = info->snd_portid;
9258
9259 return ret;
9260 }
9261
9262 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9263 struct genl_info *info)
9264 {
9265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9266 struct wireless_dev *wdev = info->user_ptr[1];
9267
9268 if (!rdev->ops->crit_proto_stop)
9269 return -EOPNOTSUPP;
9270
9271 if (rdev->crit_proto_nlportid) {
9272 rdev->crit_proto_nlportid = 0;
9273 rdev_crit_proto_stop(rdev, wdev);
9274 }
9275 return 0;
9276 }
9277
9278 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9279 {
9280 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9281 struct wireless_dev *wdev =
9282 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9283 int i, err;
9284 u32 vid, subcmd;
9285
9286 if (!rdev->wiphy.vendor_commands)
9287 return -EOPNOTSUPP;
9288
9289 if (IS_ERR(wdev)) {
9290 err = PTR_ERR(wdev);
9291 if (err != -EINVAL)
9292 return err;
9293 wdev = NULL;
9294 } else if (wdev->wiphy != &rdev->wiphy) {
9295 return -EINVAL;
9296 }
9297
9298 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9299 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9300 return -EINVAL;
9301
9302 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9303 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9304 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9305 const struct wiphy_vendor_command *vcmd;
9306 void *data = NULL;
9307 int len = 0;
9308
9309 vcmd = &rdev->wiphy.vendor_commands[i];
9310
9311 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9312 continue;
9313
9314 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9315 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9316 if (!wdev)
9317 return -EINVAL;
9318 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9319 !wdev->netdev)
9320 return -EINVAL;
9321
9322 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9323 if (wdev->netdev &&
9324 !netif_running(wdev->netdev))
9325 return -ENETDOWN;
9326 if (!wdev->netdev && !wdev->p2p_started)
9327 return -ENETDOWN;
9328 }
9329 } else {
9330 wdev = NULL;
9331 }
9332
9333 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9334 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9335 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9336 }
9337
9338 rdev->cur_cmd_info = info;
9339 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9340 data, len);
9341 rdev->cur_cmd_info = NULL;
9342 return err;
9343 }
9344
9345 return -EOPNOTSUPP;
9346 }
9347
9348 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9349 enum nl80211_commands cmd,
9350 enum nl80211_attrs attr,
9351 int approxlen)
9352 {
9353 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9354
9355 if (WARN_ON(!rdev->cur_cmd_info))
9356 return NULL;
9357
9358 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9359 rdev->cur_cmd_info->snd_portid,
9360 rdev->cur_cmd_info->snd_seq,
9361 cmd, attr, NULL, GFP_KERNEL);
9362 }
9363 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9364
9365 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9366 {
9367 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9368 void *hdr = ((void **)skb->cb)[1];
9369 struct nlattr *data = ((void **)skb->cb)[2];
9370
9371 /* clear CB data for netlink core to own from now on */
9372 memset(skb->cb, 0, sizeof(skb->cb));
9373
9374 if (WARN_ON(!rdev->cur_cmd_info)) {
9375 kfree_skb(skb);
9376 return -EINVAL;
9377 }
9378
9379 nla_nest_end(skb, data);
9380 genlmsg_end(skb, hdr);
9381 return genlmsg_reply(skb, rdev->cur_cmd_info);
9382 }
9383 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9384
9385
9386 static int nl80211_set_qos_map(struct sk_buff *skb,
9387 struct genl_info *info)
9388 {
9389 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9390 struct cfg80211_qos_map *qos_map = NULL;
9391 struct net_device *dev = info->user_ptr[1];
9392 u8 *pos, len, num_des, des_len, des;
9393 int ret;
9394
9395 if (!rdev->ops->set_qos_map)
9396 return -EOPNOTSUPP;
9397
9398 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9399 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9400 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9401
9402 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9403 len > IEEE80211_QOS_MAP_LEN_MAX)
9404 return -EINVAL;
9405
9406 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9407 if (!qos_map)
9408 return -ENOMEM;
9409
9410 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9411 if (num_des) {
9412 des_len = num_des *
9413 sizeof(struct cfg80211_dscp_exception);
9414 memcpy(qos_map->dscp_exception, pos, des_len);
9415 qos_map->num_des = num_des;
9416 for (des = 0; des < num_des; des++) {
9417 if (qos_map->dscp_exception[des].up > 7) {
9418 kfree(qos_map);
9419 return -EINVAL;
9420 }
9421 }
9422 pos += des_len;
9423 }
9424 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9425 }
9426
9427 wdev_lock(dev->ieee80211_ptr);
9428 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9429 if (!ret)
9430 ret = rdev_set_qos_map(rdev, dev, qos_map);
9431 wdev_unlock(dev->ieee80211_ptr);
9432
9433 kfree(qos_map);
9434 return ret;
9435 }
9436
9437 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9438 {
9439 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9440 struct net_device *dev = info->user_ptr[1];
9441 struct wireless_dev *wdev = dev->ieee80211_ptr;
9442 const u8 *peer;
9443 u8 tsid, up;
9444 u16 admitted_time = 0;
9445 int err;
9446
9447 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_WMM_ADMISSION))
9448 return -EOPNOTSUPP;
9449
9450 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9451 !info->attrs[NL80211_ATTR_USER_PRIO])
9452 return -EINVAL;
9453
9454 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9455 if (tsid >= IEEE80211_NUM_TIDS)
9456 return -EINVAL;
9457
9458 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9459 if (up >= IEEE80211_NUM_UPS)
9460 return -EINVAL;
9461
9462 /* WMM uses TIDs 0-7 even for TSPEC */
9463 if (tsid < IEEE80211_FIRST_TSPEC_TSID) {
9464 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_WMM_ADMISSION))
9465 return -EINVAL;
9466 } else {
9467 /* TODO: handle 802.11 TSPEC/admission control
9468 * need more attributes for that (e.g. BA session requirement)
9469 */
9470 return -EINVAL;
9471 }
9472
9473 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9474
9475 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9476 admitted_time =
9477 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9478 if (!admitted_time)
9479 return -EINVAL;
9480 }
9481
9482 wdev_lock(wdev);
9483 switch (wdev->iftype) {
9484 case NL80211_IFTYPE_STATION:
9485 case NL80211_IFTYPE_P2P_CLIENT:
9486 if (wdev->current_bss)
9487 break;
9488 err = -ENOTCONN;
9489 goto out;
9490 default:
9491 err = -EOPNOTSUPP;
9492 goto out;
9493 }
9494
9495 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9496
9497 out:
9498 wdev_unlock(wdev);
9499 return err;
9500 }
9501
9502 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9503 {
9504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9505 struct net_device *dev = info->user_ptr[1];
9506 struct wireless_dev *wdev = dev->ieee80211_ptr;
9507 const u8 *peer;
9508 u8 tsid;
9509 int err;
9510
9511 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9512 return -EINVAL;
9513
9514 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9515 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9516
9517 wdev_lock(wdev);
9518 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9519 wdev_unlock(wdev);
9520
9521 return err;
9522 }
9523
9524 #define NL80211_FLAG_NEED_WIPHY 0x01
9525 #define NL80211_FLAG_NEED_NETDEV 0x02
9526 #define NL80211_FLAG_NEED_RTNL 0x04
9527 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9528 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9529 NL80211_FLAG_CHECK_NETDEV_UP)
9530 #define NL80211_FLAG_NEED_WDEV 0x10
9531 /* If a netdev is associated, it must be UP, P2P must be started */
9532 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9533 NL80211_FLAG_CHECK_NETDEV_UP)
9534 #define NL80211_FLAG_CLEAR_SKB 0x20
9535
9536 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9537 struct genl_info *info)
9538 {
9539 struct cfg80211_registered_device *rdev;
9540 struct wireless_dev *wdev;
9541 struct net_device *dev;
9542 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9543
9544 if (rtnl)
9545 rtnl_lock();
9546
9547 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9548 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9549 if (IS_ERR(rdev)) {
9550 if (rtnl)
9551 rtnl_unlock();
9552 return PTR_ERR(rdev);
9553 }
9554 info->user_ptr[0] = rdev;
9555 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9556 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9557 ASSERT_RTNL();
9558
9559 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9560 info->attrs);
9561 if (IS_ERR(wdev)) {
9562 if (rtnl)
9563 rtnl_unlock();
9564 return PTR_ERR(wdev);
9565 }
9566
9567 dev = wdev->netdev;
9568 rdev = wiphy_to_rdev(wdev->wiphy);
9569
9570 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9571 if (!dev) {
9572 if (rtnl)
9573 rtnl_unlock();
9574 return -EINVAL;
9575 }
9576
9577 info->user_ptr[1] = dev;
9578 } else {
9579 info->user_ptr[1] = wdev;
9580 }
9581
9582 if (dev) {
9583 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9584 !netif_running(dev)) {
9585 if (rtnl)
9586 rtnl_unlock();
9587 return -ENETDOWN;
9588 }
9589
9590 dev_hold(dev);
9591 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9592 if (!wdev->p2p_started) {
9593 if (rtnl)
9594 rtnl_unlock();
9595 return -ENETDOWN;
9596 }
9597 }
9598
9599 info->user_ptr[0] = rdev;
9600 }
9601
9602 return 0;
9603 }
9604
9605 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9606 struct genl_info *info)
9607 {
9608 if (info->user_ptr[1]) {
9609 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9610 struct wireless_dev *wdev = info->user_ptr[1];
9611
9612 if (wdev->netdev)
9613 dev_put(wdev->netdev);
9614 } else {
9615 dev_put(info->user_ptr[1]);
9616 }
9617 }
9618
9619 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9620 rtnl_unlock();
9621
9622 /* If needed, clear the netlink message payload from the SKB
9623 * as it might contain key data that shouldn't stick around on
9624 * the heap after the SKB is freed. The netlink message header
9625 * is still needed for further processing, so leave it intact.
9626 */
9627 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
9628 struct nlmsghdr *nlh = nlmsg_hdr(skb);
9629
9630 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
9631 }
9632 }
9633
9634 static const struct genl_ops nl80211_ops[] = {
9635 {
9636 .cmd = NL80211_CMD_GET_WIPHY,
9637 .doit = nl80211_get_wiphy,
9638 .dumpit = nl80211_dump_wiphy,
9639 .done = nl80211_dump_wiphy_done,
9640 .policy = nl80211_policy,
9641 /* can be retrieved by unprivileged users */
9642 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9643 NL80211_FLAG_NEED_RTNL,
9644 },
9645 {
9646 .cmd = NL80211_CMD_SET_WIPHY,
9647 .doit = nl80211_set_wiphy,
9648 .policy = nl80211_policy,
9649 .flags = GENL_ADMIN_PERM,
9650 .internal_flags = NL80211_FLAG_NEED_RTNL,
9651 },
9652 {
9653 .cmd = NL80211_CMD_GET_INTERFACE,
9654 .doit = nl80211_get_interface,
9655 .dumpit = nl80211_dump_interface,
9656 .policy = nl80211_policy,
9657 /* can be retrieved by unprivileged users */
9658 .internal_flags = NL80211_FLAG_NEED_WDEV |
9659 NL80211_FLAG_NEED_RTNL,
9660 },
9661 {
9662 .cmd = NL80211_CMD_SET_INTERFACE,
9663 .doit = nl80211_set_interface,
9664 .policy = nl80211_policy,
9665 .flags = GENL_ADMIN_PERM,
9666 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9667 NL80211_FLAG_NEED_RTNL,
9668 },
9669 {
9670 .cmd = NL80211_CMD_NEW_INTERFACE,
9671 .doit = nl80211_new_interface,
9672 .policy = nl80211_policy,
9673 .flags = GENL_ADMIN_PERM,
9674 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9675 NL80211_FLAG_NEED_RTNL,
9676 },
9677 {
9678 .cmd = NL80211_CMD_DEL_INTERFACE,
9679 .doit = nl80211_del_interface,
9680 .policy = nl80211_policy,
9681 .flags = GENL_ADMIN_PERM,
9682 .internal_flags = NL80211_FLAG_NEED_WDEV |
9683 NL80211_FLAG_NEED_RTNL,
9684 },
9685 {
9686 .cmd = NL80211_CMD_GET_KEY,
9687 .doit = nl80211_get_key,
9688 .policy = nl80211_policy,
9689 .flags = GENL_ADMIN_PERM,
9690 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9691 NL80211_FLAG_NEED_RTNL,
9692 },
9693 {
9694 .cmd = NL80211_CMD_SET_KEY,
9695 .doit = nl80211_set_key,
9696 .policy = nl80211_policy,
9697 .flags = GENL_ADMIN_PERM,
9698 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9699 NL80211_FLAG_NEED_RTNL |
9700 NL80211_FLAG_CLEAR_SKB,
9701 },
9702 {
9703 .cmd = NL80211_CMD_NEW_KEY,
9704 .doit = nl80211_new_key,
9705 .policy = nl80211_policy,
9706 .flags = GENL_ADMIN_PERM,
9707 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9708 NL80211_FLAG_NEED_RTNL |
9709 NL80211_FLAG_CLEAR_SKB,
9710 },
9711 {
9712 .cmd = NL80211_CMD_DEL_KEY,
9713 .doit = nl80211_del_key,
9714 .policy = nl80211_policy,
9715 .flags = GENL_ADMIN_PERM,
9716 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9717 NL80211_FLAG_NEED_RTNL,
9718 },
9719 {
9720 .cmd = NL80211_CMD_SET_BEACON,
9721 .policy = nl80211_policy,
9722 .flags = GENL_ADMIN_PERM,
9723 .doit = nl80211_set_beacon,
9724 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9725 NL80211_FLAG_NEED_RTNL,
9726 },
9727 {
9728 .cmd = NL80211_CMD_START_AP,
9729 .policy = nl80211_policy,
9730 .flags = GENL_ADMIN_PERM,
9731 .doit = nl80211_start_ap,
9732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9733 NL80211_FLAG_NEED_RTNL,
9734 },
9735 {
9736 .cmd = NL80211_CMD_STOP_AP,
9737 .policy = nl80211_policy,
9738 .flags = GENL_ADMIN_PERM,
9739 .doit = nl80211_stop_ap,
9740 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9741 NL80211_FLAG_NEED_RTNL,
9742 },
9743 {
9744 .cmd = NL80211_CMD_GET_STATION,
9745 .doit = nl80211_get_station,
9746 .dumpit = nl80211_dump_station,
9747 .policy = nl80211_policy,
9748 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9749 NL80211_FLAG_NEED_RTNL,
9750 },
9751 {
9752 .cmd = NL80211_CMD_SET_STATION,
9753 .doit = nl80211_set_station,
9754 .policy = nl80211_policy,
9755 .flags = GENL_ADMIN_PERM,
9756 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9757 NL80211_FLAG_NEED_RTNL,
9758 },
9759 {
9760 .cmd = NL80211_CMD_NEW_STATION,
9761 .doit = nl80211_new_station,
9762 .policy = nl80211_policy,
9763 .flags = GENL_ADMIN_PERM,
9764 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9765 NL80211_FLAG_NEED_RTNL,
9766 },
9767 {
9768 .cmd = NL80211_CMD_DEL_STATION,
9769 .doit = nl80211_del_station,
9770 .policy = nl80211_policy,
9771 .flags = GENL_ADMIN_PERM,
9772 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9773 NL80211_FLAG_NEED_RTNL,
9774 },
9775 {
9776 .cmd = NL80211_CMD_GET_MPATH,
9777 .doit = nl80211_get_mpath,
9778 .dumpit = nl80211_dump_mpath,
9779 .policy = nl80211_policy,
9780 .flags = GENL_ADMIN_PERM,
9781 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9782 NL80211_FLAG_NEED_RTNL,
9783 },
9784 {
9785 .cmd = NL80211_CMD_SET_MPATH,
9786 .doit = nl80211_set_mpath,
9787 .policy = nl80211_policy,
9788 .flags = GENL_ADMIN_PERM,
9789 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9790 NL80211_FLAG_NEED_RTNL,
9791 },
9792 {
9793 .cmd = NL80211_CMD_NEW_MPATH,
9794 .doit = nl80211_new_mpath,
9795 .policy = nl80211_policy,
9796 .flags = GENL_ADMIN_PERM,
9797 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9798 NL80211_FLAG_NEED_RTNL,
9799 },
9800 {
9801 .cmd = NL80211_CMD_DEL_MPATH,
9802 .doit = nl80211_del_mpath,
9803 .policy = nl80211_policy,
9804 .flags = GENL_ADMIN_PERM,
9805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9806 NL80211_FLAG_NEED_RTNL,
9807 },
9808 {
9809 .cmd = NL80211_CMD_SET_BSS,
9810 .doit = nl80211_set_bss,
9811 .policy = nl80211_policy,
9812 .flags = GENL_ADMIN_PERM,
9813 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9814 NL80211_FLAG_NEED_RTNL,
9815 },
9816 {
9817 .cmd = NL80211_CMD_GET_REG,
9818 .doit = nl80211_get_reg,
9819 .policy = nl80211_policy,
9820 .internal_flags = NL80211_FLAG_NEED_RTNL,
9821 /* can be retrieved by unprivileged users */
9822 },
9823 {
9824 .cmd = NL80211_CMD_SET_REG,
9825 .doit = nl80211_set_reg,
9826 .policy = nl80211_policy,
9827 .flags = GENL_ADMIN_PERM,
9828 .internal_flags = NL80211_FLAG_NEED_RTNL,
9829 },
9830 {
9831 .cmd = NL80211_CMD_REQ_SET_REG,
9832 .doit = nl80211_req_set_reg,
9833 .policy = nl80211_policy,
9834 .flags = GENL_ADMIN_PERM,
9835 },
9836 {
9837 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9838 .doit = nl80211_get_mesh_config,
9839 .policy = nl80211_policy,
9840 /* can be retrieved by unprivileged users */
9841 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9842 NL80211_FLAG_NEED_RTNL,
9843 },
9844 {
9845 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9846 .doit = nl80211_update_mesh_config,
9847 .policy = nl80211_policy,
9848 .flags = GENL_ADMIN_PERM,
9849 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9850 NL80211_FLAG_NEED_RTNL,
9851 },
9852 {
9853 .cmd = NL80211_CMD_TRIGGER_SCAN,
9854 .doit = nl80211_trigger_scan,
9855 .policy = nl80211_policy,
9856 .flags = GENL_ADMIN_PERM,
9857 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9858 NL80211_FLAG_NEED_RTNL,
9859 },
9860 {
9861 .cmd = NL80211_CMD_GET_SCAN,
9862 .policy = nl80211_policy,
9863 .dumpit = nl80211_dump_scan,
9864 },
9865 {
9866 .cmd = NL80211_CMD_START_SCHED_SCAN,
9867 .doit = nl80211_start_sched_scan,
9868 .policy = nl80211_policy,
9869 .flags = GENL_ADMIN_PERM,
9870 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9871 NL80211_FLAG_NEED_RTNL,
9872 },
9873 {
9874 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9875 .doit = nl80211_stop_sched_scan,
9876 .policy = nl80211_policy,
9877 .flags = GENL_ADMIN_PERM,
9878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9879 NL80211_FLAG_NEED_RTNL,
9880 },
9881 {
9882 .cmd = NL80211_CMD_AUTHENTICATE,
9883 .doit = nl80211_authenticate,
9884 .policy = nl80211_policy,
9885 .flags = GENL_ADMIN_PERM,
9886 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9887 NL80211_FLAG_NEED_RTNL |
9888 NL80211_FLAG_CLEAR_SKB,
9889 },
9890 {
9891 .cmd = NL80211_CMD_ASSOCIATE,
9892 .doit = nl80211_associate,
9893 .policy = nl80211_policy,
9894 .flags = GENL_ADMIN_PERM,
9895 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9896 NL80211_FLAG_NEED_RTNL,
9897 },
9898 {
9899 .cmd = NL80211_CMD_DEAUTHENTICATE,
9900 .doit = nl80211_deauthenticate,
9901 .policy = nl80211_policy,
9902 .flags = GENL_ADMIN_PERM,
9903 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9904 NL80211_FLAG_NEED_RTNL,
9905 },
9906 {
9907 .cmd = NL80211_CMD_DISASSOCIATE,
9908 .doit = nl80211_disassociate,
9909 .policy = nl80211_policy,
9910 .flags = GENL_ADMIN_PERM,
9911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9912 NL80211_FLAG_NEED_RTNL,
9913 },
9914 {
9915 .cmd = NL80211_CMD_JOIN_IBSS,
9916 .doit = nl80211_join_ibss,
9917 .policy = nl80211_policy,
9918 .flags = GENL_ADMIN_PERM,
9919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9920 NL80211_FLAG_NEED_RTNL,
9921 },
9922 {
9923 .cmd = NL80211_CMD_LEAVE_IBSS,
9924 .doit = nl80211_leave_ibss,
9925 .policy = nl80211_policy,
9926 .flags = GENL_ADMIN_PERM,
9927 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9928 NL80211_FLAG_NEED_RTNL,
9929 },
9930 #ifdef CONFIG_NL80211_TESTMODE
9931 {
9932 .cmd = NL80211_CMD_TESTMODE,
9933 .doit = nl80211_testmode_do,
9934 .dumpit = nl80211_testmode_dump,
9935 .policy = nl80211_policy,
9936 .flags = GENL_ADMIN_PERM,
9937 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9938 NL80211_FLAG_NEED_RTNL,
9939 },
9940 #endif
9941 {
9942 .cmd = NL80211_CMD_CONNECT,
9943 .doit = nl80211_connect,
9944 .policy = nl80211_policy,
9945 .flags = GENL_ADMIN_PERM,
9946 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9947 NL80211_FLAG_NEED_RTNL,
9948 },
9949 {
9950 .cmd = NL80211_CMD_DISCONNECT,
9951 .doit = nl80211_disconnect,
9952 .policy = nl80211_policy,
9953 .flags = GENL_ADMIN_PERM,
9954 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9955 NL80211_FLAG_NEED_RTNL,
9956 },
9957 {
9958 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9959 .doit = nl80211_wiphy_netns,
9960 .policy = nl80211_policy,
9961 .flags = GENL_ADMIN_PERM,
9962 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9963 NL80211_FLAG_NEED_RTNL,
9964 },
9965 {
9966 .cmd = NL80211_CMD_GET_SURVEY,
9967 .policy = nl80211_policy,
9968 .dumpit = nl80211_dump_survey,
9969 },
9970 {
9971 .cmd = NL80211_CMD_SET_PMKSA,
9972 .doit = nl80211_setdel_pmksa,
9973 .policy = nl80211_policy,
9974 .flags = GENL_ADMIN_PERM,
9975 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9976 NL80211_FLAG_NEED_RTNL,
9977 },
9978 {
9979 .cmd = NL80211_CMD_DEL_PMKSA,
9980 .doit = nl80211_setdel_pmksa,
9981 .policy = nl80211_policy,
9982 .flags = GENL_ADMIN_PERM,
9983 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9984 NL80211_FLAG_NEED_RTNL,
9985 },
9986 {
9987 .cmd = NL80211_CMD_FLUSH_PMKSA,
9988 .doit = nl80211_flush_pmksa,
9989 .policy = nl80211_policy,
9990 .flags = GENL_ADMIN_PERM,
9991 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9992 NL80211_FLAG_NEED_RTNL,
9993 },
9994 {
9995 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9996 .doit = nl80211_remain_on_channel,
9997 .policy = nl80211_policy,
9998 .flags = GENL_ADMIN_PERM,
9999 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10000 NL80211_FLAG_NEED_RTNL,
10001 },
10002 {
10003 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10004 .doit = nl80211_cancel_remain_on_channel,
10005 .policy = nl80211_policy,
10006 .flags = GENL_ADMIN_PERM,
10007 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10008 NL80211_FLAG_NEED_RTNL,
10009 },
10010 {
10011 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10012 .doit = nl80211_set_tx_bitrate_mask,
10013 .policy = nl80211_policy,
10014 .flags = GENL_ADMIN_PERM,
10015 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10016 NL80211_FLAG_NEED_RTNL,
10017 },
10018 {
10019 .cmd = NL80211_CMD_REGISTER_FRAME,
10020 .doit = nl80211_register_mgmt,
10021 .policy = nl80211_policy,
10022 .flags = GENL_ADMIN_PERM,
10023 .internal_flags = NL80211_FLAG_NEED_WDEV |
10024 NL80211_FLAG_NEED_RTNL,
10025 },
10026 {
10027 .cmd = NL80211_CMD_FRAME,
10028 .doit = nl80211_tx_mgmt,
10029 .policy = nl80211_policy,
10030 .flags = GENL_ADMIN_PERM,
10031 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10032 NL80211_FLAG_NEED_RTNL,
10033 },
10034 {
10035 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10036 .doit = nl80211_tx_mgmt_cancel_wait,
10037 .policy = nl80211_policy,
10038 .flags = GENL_ADMIN_PERM,
10039 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10040 NL80211_FLAG_NEED_RTNL,
10041 },
10042 {
10043 .cmd = NL80211_CMD_SET_POWER_SAVE,
10044 .doit = nl80211_set_power_save,
10045 .policy = nl80211_policy,
10046 .flags = GENL_ADMIN_PERM,
10047 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10048 NL80211_FLAG_NEED_RTNL,
10049 },
10050 {
10051 .cmd = NL80211_CMD_GET_POWER_SAVE,
10052 .doit = nl80211_get_power_save,
10053 .policy = nl80211_policy,
10054 /* can be retrieved by unprivileged users */
10055 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10056 NL80211_FLAG_NEED_RTNL,
10057 },
10058 {
10059 .cmd = NL80211_CMD_SET_CQM,
10060 .doit = nl80211_set_cqm,
10061 .policy = nl80211_policy,
10062 .flags = GENL_ADMIN_PERM,
10063 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10064 NL80211_FLAG_NEED_RTNL,
10065 },
10066 {
10067 .cmd = NL80211_CMD_SET_CHANNEL,
10068 .doit = nl80211_set_channel,
10069 .policy = nl80211_policy,
10070 .flags = GENL_ADMIN_PERM,
10071 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10072 NL80211_FLAG_NEED_RTNL,
10073 },
10074 {
10075 .cmd = NL80211_CMD_SET_WDS_PEER,
10076 .doit = nl80211_set_wds_peer,
10077 .policy = nl80211_policy,
10078 .flags = GENL_ADMIN_PERM,
10079 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10080 NL80211_FLAG_NEED_RTNL,
10081 },
10082 {
10083 .cmd = NL80211_CMD_JOIN_MESH,
10084 .doit = nl80211_join_mesh,
10085 .policy = nl80211_policy,
10086 .flags = GENL_ADMIN_PERM,
10087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10088 NL80211_FLAG_NEED_RTNL,
10089 },
10090 {
10091 .cmd = NL80211_CMD_LEAVE_MESH,
10092 .doit = nl80211_leave_mesh,
10093 .policy = nl80211_policy,
10094 .flags = GENL_ADMIN_PERM,
10095 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10096 NL80211_FLAG_NEED_RTNL,
10097 },
10098 #ifdef CONFIG_PM
10099 {
10100 .cmd = NL80211_CMD_GET_WOWLAN,
10101 .doit = nl80211_get_wowlan,
10102 .policy = nl80211_policy,
10103 /* can be retrieved by unprivileged users */
10104 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10105 NL80211_FLAG_NEED_RTNL,
10106 },
10107 {
10108 .cmd = NL80211_CMD_SET_WOWLAN,
10109 .doit = nl80211_set_wowlan,
10110 .policy = nl80211_policy,
10111 .flags = GENL_ADMIN_PERM,
10112 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10113 NL80211_FLAG_NEED_RTNL,
10114 },
10115 #endif
10116 {
10117 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10118 .doit = nl80211_set_rekey_data,
10119 .policy = nl80211_policy,
10120 .flags = GENL_ADMIN_PERM,
10121 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10122 NL80211_FLAG_NEED_RTNL |
10123 NL80211_FLAG_CLEAR_SKB,
10124 },
10125 {
10126 .cmd = NL80211_CMD_TDLS_MGMT,
10127 .doit = nl80211_tdls_mgmt,
10128 .policy = nl80211_policy,
10129 .flags = GENL_ADMIN_PERM,
10130 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10131 NL80211_FLAG_NEED_RTNL,
10132 },
10133 {
10134 .cmd = NL80211_CMD_TDLS_OPER,
10135 .doit = nl80211_tdls_oper,
10136 .policy = nl80211_policy,
10137 .flags = GENL_ADMIN_PERM,
10138 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10139 NL80211_FLAG_NEED_RTNL,
10140 },
10141 {
10142 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10143 .doit = nl80211_register_unexpected_frame,
10144 .policy = nl80211_policy,
10145 .flags = GENL_ADMIN_PERM,
10146 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10147 NL80211_FLAG_NEED_RTNL,
10148 },
10149 {
10150 .cmd = NL80211_CMD_PROBE_CLIENT,
10151 .doit = nl80211_probe_client,
10152 .policy = nl80211_policy,
10153 .flags = GENL_ADMIN_PERM,
10154 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10155 NL80211_FLAG_NEED_RTNL,
10156 },
10157 {
10158 .cmd = NL80211_CMD_REGISTER_BEACONS,
10159 .doit = nl80211_register_beacons,
10160 .policy = nl80211_policy,
10161 .flags = GENL_ADMIN_PERM,
10162 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10163 NL80211_FLAG_NEED_RTNL,
10164 },
10165 {
10166 .cmd = NL80211_CMD_SET_NOACK_MAP,
10167 .doit = nl80211_set_noack_map,
10168 .policy = nl80211_policy,
10169 .flags = GENL_ADMIN_PERM,
10170 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10171 NL80211_FLAG_NEED_RTNL,
10172 },
10173 {
10174 .cmd = NL80211_CMD_START_P2P_DEVICE,
10175 .doit = nl80211_start_p2p_device,
10176 .policy = nl80211_policy,
10177 .flags = GENL_ADMIN_PERM,
10178 .internal_flags = NL80211_FLAG_NEED_WDEV |
10179 NL80211_FLAG_NEED_RTNL,
10180 },
10181 {
10182 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10183 .doit = nl80211_stop_p2p_device,
10184 .policy = nl80211_policy,
10185 .flags = GENL_ADMIN_PERM,
10186 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10187 NL80211_FLAG_NEED_RTNL,
10188 },
10189 {
10190 .cmd = NL80211_CMD_SET_MCAST_RATE,
10191 .doit = nl80211_set_mcast_rate,
10192 .policy = nl80211_policy,
10193 .flags = GENL_ADMIN_PERM,
10194 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10195 NL80211_FLAG_NEED_RTNL,
10196 },
10197 {
10198 .cmd = NL80211_CMD_SET_MAC_ACL,
10199 .doit = nl80211_set_mac_acl,
10200 .policy = nl80211_policy,
10201 .flags = GENL_ADMIN_PERM,
10202 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10203 NL80211_FLAG_NEED_RTNL,
10204 },
10205 {
10206 .cmd = NL80211_CMD_RADAR_DETECT,
10207 .doit = nl80211_start_radar_detection,
10208 .policy = nl80211_policy,
10209 .flags = GENL_ADMIN_PERM,
10210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10211 NL80211_FLAG_NEED_RTNL,
10212 },
10213 {
10214 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10215 .doit = nl80211_get_protocol_features,
10216 .policy = nl80211_policy,
10217 },
10218 {
10219 .cmd = NL80211_CMD_UPDATE_FT_IES,
10220 .doit = nl80211_update_ft_ies,
10221 .policy = nl80211_policy,
10222 .flags = GENL_ADMIN_PERM,
10223 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10224 NL80211_FLAG_NEED_RTNL,
10225 },
10226 {
10227 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10228 .doit = nl80211_crit_protocol_start,
10229 .policy = nl80211_policy,
10230 .flags = GENL_ADMIN_PERM,
10231 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10232 NL80211_FLAG_NEED_RTNL,
10233 },
10234 {
10235 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10236 .doit = nl80211_crit_protocol_stop,
10237 .policy = nl80211_policy,
10238 .flags = GENL_ADMIN_PERM,
10239 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10240 NL80211_FLAG_NEED_RTNL,
10241 },
10242 {
10243 .cmd = NL80211_CMD_GET_COALESCE,
10244 .doit = nl80211_get_coalesce,
10245 .policy = nl80211_policy,
10246 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10247 NL80211_FLAG_NEED_RTNL,
10248 },
10249 {
10250 .cmd = NL80211_CMD_SET_COALESCE,
10251 .doit = nl80211_set_coalesce,
10252 .policy = nl80211_policy,
10253 .flags = GENL_ADMIN_PERM,
10254 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10255 NL80211_FLAG_NEED_RTNL,
10256 },
10257 {
10258 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10259 .doit = nl80211_channel_switch,
10260 .policy = nl80211_policy,
10261 .flags = GENL_ADMIN_PERM,
10262 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10263 NL80211_FLAG_NEED_RTNL,
10264 },
10265 {
10266 .cmd = NL80211_CMD_VENDOR,
10267 .doit = nl80211_vendor_cmd,
10268 .policy = nl80211_policy,
10269 .flags = GENL_ADMIN_PERM,
10270 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10271 NL80211_FLAG_NEED_RTNL,
10272 },
10273 {
10274 .cmd = NL80211_CMD_SET_QOS_MAP,
10275 .doit = nl80211_set_qos_map,
10276 .policy = nl80211_policy,
10277 .flags = GENL_ADMIN_PERM,
10278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10279 NL80211_FLAG_NEED_RTNL,
10280 },
10281 {
10282 .cmd = NL80211_CMD_ADD_TX_TS,
10283 .doit = nl80211_add_tx_ts,
10284 .policy = nl80211_policy,
10285 .flags = GENL_ADMIN_PERM,
10286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10287 NL80211_FLAG_NEED_RTNL,
10288 },
10289 {
10290 .cmd = NL80211_CMD_DEL_TX_TS,
10291 .doit = nl80211_del_tx_ts,
10292 .policy = nl80211_policy,
10293 .flags = GENL_ADMIN_PERM,
10294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10295 NL80211_FLAG_NEED_RTNL,
10296 },
10297 };
10298
10299 /* notification functions */
10300
10301 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10302 enum nl80211_commands cmd)
10303 {
10304 struct sk_buff *msg;
10305 struct nl80211_dump_wiphy_state state = {};
10306
10307 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10308 cmd != NL80211_CMD_DEL_WIPHY);
10309
10310 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10311 if (!msg)
10312 return;
10313
10314 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10315 nlmsg_free(msg);
10316 return;
10317 }
10318
10319 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10320 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10321 }
10322
10323 static int nl80211_add_scan_req(struct sk_buff *msg,
10324 struct cfg80211_registered_device *rdev)
10325 {
10326 struct cfg80211_scan_request *req = rdev->scan_req;
10327 struct nlattr *nest;
10328 int i;
10329
10330 if (WARN_ON(!req))
10331 return 0;
10332
10333 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10334 if (!nest)
10335 goto nla_put_failure;
10336 for (i = 0; i < req->n_ssids; i++) {
10337 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10338 goto nla_put_failure;
10339 }
10340 nla_nest_end(msg, nest);
10341
10342 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10343 if (!nest)
10344 goto nla_put_failure;
10345 for (i = 0; i < req->n_channels; i++) {
10346 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10347 goto nla_put_failure;
10348 }
10349 nla_nest_end(msg, nest);
10350
10351 if (req->ie &&
10352 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10353 goto nla_put_failure;
10354
10355 if (req->flags &&
10356 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10357 goto nla_put_failure;
10358
10359 return 0;
10360 nla_put_failure:
10361 return -ENOBUFS;
10362 }
10363
10364 static int nl80211_send_scan_msg(struct sk_buff *msg,
10365 struct cfg80211_registered_device *rdev,
10366 struct wireless_dev *wdev,
10367 u32 portid, u32 seq, int flags,
10368 u32 cmd)
10369 {
10370 void *hdr;
10371
10372 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10373 if (!hdr)
10374 return -1;
10375
10376 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10377 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10378 wdev->netdev->ifindex)) ||
10379 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10380 goto nla_put_failure;
10381
10382 /* ignore errors and send incomplete event anyway */
10383 nl80211_add_scan_req(msg, rdev);
10384
10385 return genlmsg_end(msg, hdr);
10386
10387 nla_put_failure:
10388 genlmsg_cancel(msg, hdr);
10389 return -EMSGSIZE;
10390 }
10391
10392 static int
10393 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10394 struct cfg80211_registered_device *rdev,
10395 struct net_device *netdev,
10396 u32 portid, u32 seq, int flags, u32 cmd)
10397 {
10398 void *hdr;
10399
10400 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10401 if (!hdr)
10402 return -1;
10403
10404 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10405 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10406 goto nla_put_failure;
10407
10408 return genlmsg_end(msg, hdr);
10409
10410 nla_put_failure:
10411 genlmsg_cancel(msg, hdr);
10412 return -EMSGSIZE;
10413 }
10414
10415 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10416 struct wireless_dev *wdev)
10417 {
10418 struct sk_buff *msg;
10419
10420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10421 if (!msg)
10422 return;
10423
10424 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10425 NL80211_CMD_TRIGGER_SCAN) < 0) {
10426 nlmsg_free(msg);
10427 return;
10428 }
10429
10430 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10431 NL80211_MCGRP_SCAN, GFP_KERNEL);
10432 }
10433
10434 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10435 struct wireless_dev *wdev, bool aborted)
10436 {
10437 struct sk_buff *msg;
10438
10439 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10440 if (!msg)
10441 return NULL;
10442
10443 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10444 aborted ? NL80211_CMD_SCAN_ABORTED :
10445 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10446 nlmsg_free(msg);
10447 return NULL;
10448 }
10449
10450 return msg;
10451 }
10452
10453 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10454 struct sk_buff *msg)
10455 {
10456 if (!msg)
10457 return;
10458
10459 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10460 NL80211_MCGRP_SCAN, GFP_KERNEL);
10461 }
10462
10463 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10464 struct net_device *netdev)
10465 {
10466 struct sk_buff *msg;
10467
10468 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10469 if (!msg)
10470 return;
10471
10472 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10473 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10474 nlmsg_free(msg);
10475 return;
10476 }
10477
10478 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10479 NL80211_MCGRP_SCAN, GFP_KERNEL);
10480 }
10481
10482 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10483 struct net_device *netdev, u32 cmd)
10484 {
10485 struct sk_buff *msg;
10486
10487 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10488 if (!msg)
10489 return;
10490
10491 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10492 nlmsg_free(msg);
10493 return;
10494 }
10495
10496 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10497 NL80211_MCGRP_SCAN, GFP_KERNEL);
10498 }
10499
10500 /*
10501 * This can happen on global regulatory changes or device specific settings
10502 * based on custom world regulatory domains.
10503 */
10504 void nl80211_send_reg_change_event(struct regulatory_request *request)
10505 {
10506 struct sk_buff *msg;
10507 void *hdr;
10508
10509 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10510 if (!msg)
10511 return;
10512
10513 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10514 if (!hdr) {
10515 nlmsg_free(msg);
10516 return;
10517 }
10518
10519 /* Userspace can always count this one always being set */
10520 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10521 goto nla_put_failure;
10522
10523 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10524 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10525 NL80211_REGDOM_TYPE_WORLD))
10526 goto nla_put_failure;
10527 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10528 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10529 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10530 goto nla_put_failure;
10531 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10532 request->intersect) {
10533 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10534 NL80211_REGDOM_TYPE_INTERSECTION))
10535 goto nla_put_failure;
10536 } else {
10537 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10538 NL80211_REGDOM_TYPE_COUNTRY) ||
10539 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10540 request->alpha2))
10541 goto nla_put_failure;
10542 }
10543
10544 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10545 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10546 goto nla_put_failure;
10547
10548 genlmsg_end(msg, hdr);
10549
10550 rcu_read_lock();
10551 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10552 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10553 rcu_read_unlock();
10554
10555 return;
10556
10557 nla_put_failure:
10558 genlmsg_cancel(msg, hdr);
10559 nlmsg_free(msg);
10560 }
10561
10562 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10563 struct net_device *netdev,
10564 const u8 *buf, size_t len,
10565 enum nl80211_commands cmd, gfp_t gfp,
10566 int uapsd_queues)
10567 {
10568 struct sk_buff *msg;
10569 void *hdr;
10570
10571 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10572 if (!msg)
10573 return;
10574
10575 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10576 if (!hdr) {
10577 nlmsg_free(msg);
10578 return;
10579 }
10580
10581 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10582 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10583 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10584 goto nla_put_failure;
10585
10586 if (uapsd_queues >= 0) {
10587 struct nlattr *nla_wmm =
10588 nla_nest_start(msg, NL80211_ATTR_STA_WME);
10589 if (!nla_wmm)
10590 goto nla_put_failure;
10591
10592 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
10593 uapsd_queues))
10594 goto nla_put_failure;
10595
10596 nla_nest_end(msg, nla_wmm);
10597 }
10598
10599 genlmsg_end(msg, hdr);
10600
10601 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10602 NL80211_MCGRP_MLME, gfp);
10603 return;
10604
10605 nla_put_failure:
10606 genlmsg_cancel(msg, hdr);
10607 nlmsg_free(msg);
10608 }
10609
10610 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10611 struct net_device *netdev, const u8 *buf,
10612 size_t len, gfp_t gfp)
10613 {
10614 nl80211_send_mlme_event(rdev, netdev, buf, len,
10615 NL80211_CMD_AUTHENTICATE, gfp, -1);
10616 }
10617
10618 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10619 struct net_device *netdev, const u8 *buf,
10620 size_t len, gfp_t gfp, int uapsd_queues)
10621 {
10622 nl80211_send_mlme_event(rdev, netdev, buf, len,
10623 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
10624 }
10625
10626 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10627 struct net_device *netdev, const u8 *buf,
10628 size_t len, gfp_t gfp)
10629 {
10630 nl80211_send_mlme_event(rdev, netdev, buf, len,
10631 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
10632 }
10633
10634 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10635 struct net_device *netdev, const u8 *buf,
10636 size_t len, gfp_t gfp)
10637 {
10638 nl80211_send_mlme_event(rdev, netdev, buf, len,
10639 NL80211_CMD_DISASSOCIATE, gfp, -1);
10640 }
10641
10642 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10643 size_t len)
10644 {
10645 struct wireless_dev *wdev = dev->ieee80211_ptr;
10646 struct wiphy *wiphy = wdev->wiphy;
10647 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10648 const struct ieee80211_mgmt *mgmt = (void *)buf;
10649 u32 cmd;
10650
10651 if (WARN_ON(len < 2))
10652 return;
10653
10654 if (ieee80211_is_deauth(mgmt->frame_control))
10655 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10656 else
10657 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10658
10659 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10660 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
10661 }
10662 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10663
10664 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10665 struct net_device *netdev, int cmd,
10666 const u8 *addr, gfp_t gfp)
10667 {
10668 struct sk_buff *msg;
10669 void *hdr;
10670
10671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10672 if (!msg)
10673 return;
10674
10675 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10676 if (!hdr) {
10677 nlmsg_free(msg);
10678 return;
10679 }
10680
10681 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10682 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10683 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10684 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10685 goto nla_put_failure;
10686
10687 genlmsg_end(msg, hdr);
10688
10689 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10690 NL80211_MCGRP_MLME, gfp);
10691 return;
10692
10693 nla_put_failure:
10694 genlmsg_cancel(msg, hdr);
10695 nlmsg_free(msg);
10696 }
10697
10698 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10699 struct net_device *netdev, const u8 *addr,
10700 gfp_t gfp)
10701 {
10702 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10703 addr, gfp);
10704 }
10705
10706 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10707 struct net_device *netdev, const u8 *addr,
10708 gfp_t gfp)
10709 {
10710 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10711 addr, gfp);
10712 }
10713
10714 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10715 struct net_device *netdev, const u8 *bssid,
10716 const u8 *req_ie, size_t req_ie_len,
10717 const u8 *resp_ie, size_t resp_ie_len,
10718 u16 status, gfp_t gfp)
10719 {
10720 struct sk_buff *msg;
10721 void *hdr;
10722
10723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10724 if (!msg)
10725 return;
10726
10727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10728 if (!hdr) {
10729 nlmsg_free(msg);
10730 return;
10731 }
10732
10733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10734 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10735 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10736 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10737 (req_ie &&
10738 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10739 (resp_ie &&
10740 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10741 goto nla_put_failure;
10742
10743 genlmsg_end(msg, hdr);
10744
10745 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10746 NL80211_MCGRP_MLME, gfp);
10747 return;
10748
10749 nla_put_failure:
10750 genlmsg_cancel(msg, hdr);
10751 nlmsg_free(msg);
10752
10753 }
10754
10755 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10756 struct net_device *netdev, const u8 *bssid,
10757 const u8 *req_ie, size_t req_ie_len,
10758 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10759 {
10760 struct sk_buff *msg;
10761 void *hdr;
10762
10763 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10764 if (!msg)
10765 return;
10766
10767 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10768 if (!hdr) {
10769 nlmsg_free(msg);
10770 return;
10771 }
10772
10773 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10774 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10775 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10776 (req_ie &&
10777 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10778 (resp_ie &&
10779 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10780 goto nla_put_failure;
10781
10782 genlmsg_end(msg, hdr);
10783
10784 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10785 NL80211_MCGRP_MLME, gfp);
10786 return;
10787
10788 nla_put_failure:
10789 genlmsg_cancel(msg, hdr);
10790 nlmsg_free(msg);
10791
10792 }
10793
10794 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10795 struct net_device *netdev, u16 reason,
10796 const u8 *ie, size_t ie_len, bool from_ap)
10797 {
10798 struct sk_buff *msg;
10799 void *hdr;
10800
10801 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10802 if (!msg)
10803 return;
10804
10805 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10806 if (!hdr) {
10807 nlmsg_free(msg);
10808 return;
10809 }
10810
10811 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10812 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10813 (from_ap && reason &&
10814 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10815 (from_ap &&
10816 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10817 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10818 goto nla_put_failure;
10819
10820 genlmsg_end(msg, hdr);
10821
10822 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10823 NL80211_MCGRP_MLME, GFP_KERNEL);
10824 return;
10825
10826 nla_put_failure:
10827 genlmsg_cancel(msg, hdr);
10828 nlmsg_free(msg);
10829
10830 }
10831
10832 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10833 struct net_device *netdev, const u8 *bssid,
10834 gfp_t gfp)
10835 {
10836 struct sk_buff *msg;
10837 void *hdr;
10838
10839 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10840 if (!msg)
10841 return;
10842
10843 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10844 if (!hdr) {
10845 nlmsg_free(msg);
10846 return;
10847 }
10848
10849 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10850 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10851 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10852 goto nla_put_failure;
10853
10854 genlmsg_end(msg, hdr);
10855
10856 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10857 NL80211_MCGRP_MLME, gfp);
10858 return;
10859
10860 nla_put_failure:
10861 genlmsg_cancel(msg, hdr);
10862 nlmsg_free(msg);
10863 }
10864
10865 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10866 const u8* ie, u8 ie_len, gfp_t gfp)
10867 {
10868 struct wireless_dev *wdev = dev->ieee80211_ptr;
10869 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10870 struct sk_buff *msg;
10871 void *hdr;
10872
10873 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10874 return;
10875
10876 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10877
10878 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10879 if (!msg)
10880 return;
10881
10882 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10883 if (!hdr) {
10884 nlmsg_free(msg);
10885 return;
10886 }
10887
10888 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10889 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10890 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10891 (ie_len && ie &&
10892 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10893 goto nla_put_failure;
10894
10895 genlmsg_end(msg, hdr);
10896
10897 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10898 NL80211_MCGRP_MLME, gfp);
10899 return;
10900
10901 nla_put_failure:
10902 genlmsg_cancel(msg, hdr);
10903 nlmsg_free(msg);
10904 }
10905 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10906
10907 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10908 struct net_device *netdev, const u8 *addr,
10909 enum nl80211_key_type key_type, int key_id,
10910 const u8 *tsc, gfp_t gfp)
10911 {
10912 struct sk_buff *msg;
10913 void *hdr;
10914
10915 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10916 if (!msg)
10917 return;
10918
10919 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10920 if (!hdr) {
10921 nlmsg_free(msg);
10922 return;
10923 }
10924
10925 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10926 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10927 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10928 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10929 (key_id != -1 &&
10930 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10931 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10932 goto nla_put_failure;
10933
10934 genlmsg_end(msg, hdr);
10935
10936 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10937 NL80211_MCGRP_MLME, gfp);
10938 return;
10939
10940 nla_put_failure:
10941 genlmsg_cancel(msg, hdr);
10942 nlmsg_free(msg);
10943 }
10944
10945 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10946 struct ieee80211_channel *channel_before,
10947 struct ieee80211_channel *channel_after)
10948 {
10949 struct sk_buff *msg;
10950 void *hdr;
10951 struct nlattr *nl_freq;
10952
10953 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10954 if (!msg)
10955 return;
10956
10957 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10958 if (!hdr) {
10959 nlmsg_free(msg);
10960 return;
10961 }
10962
10963 /*
10964 * Since we are applying the beacon hint to a wiphy we know its
10965 * wiphy_idx is valid
10966 */
10967 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10968 goto nla_put_failure;
10969
10970 /* Before */
10971 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10972 if (!nl_freq)
10973 goto nla_put_failure;
10974 if (nl80211_msg_put_channel(msg, channel_before, false))
10975 goto nla_put_failure;
10976 nla_nest_end(msg, nl_freq);
10977
10978 /* After */
10979 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10980 if (!nl_freq)
10981 goto nla_put_failure;
10982 if (nl80211_msg_put_channel(msg, channel_after, false))
10983 goto nla_put_failure;
10984 nla_nest_end(msg, nl_freq);
10985
10986 genlmsg_end(msg, hdr);
10987
10988 rcu_read_lock();
10989 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10990 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10991 rcu_read_unlock();
10992
10993 return;
10994
10995 nla_put_failure:
10996 genlmsg_cancel(msg, hdr);
10997 nlmsg_free(msg);
10998 }
10999
11000 static void nl80211_send_remain_on_chan_event(
11001 int cmd, struct cfg80211_registered_device *rdev,
11002 struct wireless_dev *wdev, u64 cookie,
11003 struct ieee80211_channel *chan,
11004 unsigned int duration, gfp_t gfp)
11005 {
11006 struct sk_buff *msg;
11007 void *hdr;
11008
11009 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11010 if (!msg)
11011 return;
11012
11013 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11014 if (!hdr) {
11015 nlmsg_free(msg);
11016 return;
11017 }
11018
11019 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11020 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11021 wdev->netdev->ifindex)) ||
11022 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11023 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11024 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11025 NL80211_CHAN_NO_HT) ||
11026 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11027 goto nla_put_failure;
11028
11029 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11030 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11031 goto nla_put_failure;
11032
11033 genlmsg_end(msg, hdr);
11034
11035 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11036 NL80211_MCGRP_MLME, gfp);
11037 return;
11038
11039 nla_put_failure:
11040 genlmsg_cancel(msg, hdr);
11041 nlmsg_free(msg);
11042 }
11043
11044 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11045 struct ieee80211_channel *chan,
11046 unsigned int duration, gfp_t gfp)
11047 {
11048 struct wiphy *wiphy = wdev->wiphy;
11049 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11050
11051 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11052 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11053 rdev, wdev, cookie, chan,
11054 duration, gfp);
11055 }
11056 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11057
11058 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11059 struct ieee80211_channel *chan,
11060 gfp_t gfp)
11061 {
11062 struct wiphy *wiphy = wdev->wiphy;
11063 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11064
11065 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11066 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11067 rdev, wdev, cookie, chan, 0, gfp);
11068 }
11069 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11070
11071 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11072 struct station_info *sinfo, gfp_t gfp)
11073 {
11074 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11075 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11076 struct sk_buff *msg;
11077
11078 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11079
11080 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11081 if (!msg)
11082 return;
11083
11084 if (nl80211_send_station(msg, 0, 0, 0,
11085 rdev, dev, mac_addr, sinfo) < 0) {
11086 nlmsg_free(msg);
11087 return;
11088 }
11089
11090 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11091 NL80211_MCGRP_MLME, gfp);
11092 }
11093 EXPORT_SYMBOL(cfg80211_new_sta);
11094
11095 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11096 {
11097 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11098 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11099 struct sk_buff *msg;
11100 void *hdr;
11101
11102 trace_cfg80211_del_sta(dev, mac_addr);
11103
11104 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11105 if (!msg)
11106 return;
11107
11108 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11109 if (!hdr) {
11110 nlmsg_free(msg);
11111 return;
11112 }
11113
11114 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11115 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11116 goto nla_put_failure;
11117
11118 genlmsg_end(msg, hdr);
11119
11120 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11121 NL80211_MCGRP_MLME, gfp);
11122 return;
11123
11124 nla_put_failure:
11125 genlmsg_cancel(msg, hdr);
11126 nlmsg_free(msg);
11127 }
11128 EXPORT_SYMBOL(cfg80211_del_sta);
11129
11130 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11131 enum nl80211_connect_failed_reason reason,
11132 gfp_t gfp)
11133 {
11134 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11135 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11136 struct sk_buff *msg;
11137 void *hdr;
11138
11139 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11140 if (!msg)
11141 return;
11142
11143 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11144 if (!hdr) {
11145 nlmsg_free(msg);
11146 return;
11147 }
11148
11149 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11150 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11151 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11152 goto nla_put_failure;
11153
11154 genlmsg_end(msg, hdr);
11155
11156 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11157 NL80211_MCGRP_MLME, gfp);
11158 return;
11159
11160 nla_put_failure:
11161 genlmsg_cancel(msg, hdr);
11162 nlmsg_free(msg);
11163 }
11164 EXPORT_SYMBOL(cfg80211_conn_failed);
11165
11166 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11167 const u8 *addr, gfp_t gfp)
11168 {
11169 struct wireless_dev *wdev = dev->ieee80211_ptr;
11170 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11171 struct sk_buff *msg;
11172 void *hdr;
11173 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11174
11175 if (!nlportid)
11176 return false;
11177
11178 msg = nlmsg_new(100, gfp);
11179 if (!msg)
11180 return true;
11181
11182 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11183 if (!hdr) {
11184 nlmsg_free(msg);
11185 return true;
11186 }
11187
11188 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11189 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11190 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11191 goto nla_put_failure;
11192
11193 genlmsg_end(msg, hdr);
11194 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11195 return true;
11196
11197 nla_put_failure:
11198 genlmsg_cancel(msg, hdr);
11199 nlmsg_free(msg);
11200 return true;
11201 }
11202
11203 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11204 const u8 *addr, gfp_t gfp)
11205 {
11206 struct wireless_dev *wdev = dev->ieee80211_ptr;
11207 bool ret;
11208
11209 trace_cfg80211_rx_spurious_frame(dev, addr);
11210
11211 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11212 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11213 trace_cfg80211_return_bool(false);
11214 return false;
11215 }
11216 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11217 addr, gfp);
11218 trace_cfg80211_return_bool(ret);
11219 return ret;
11220 }
11221 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11222
11223 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11224 const u8 *addr, gfp_t gfp)
11225 {
11226 struct wireless_dev *wdev = dev->ieee80211_ptr;
11227 bool ret;
11228
11229 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11230
11231 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11232 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11233 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11234 trace_cfg80211_return_bool(false);
11235 return false;
11236 }
11237 ret = __nl80211_unexpected_frame(dev,
11238 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11239 addr, gfp);
11240 trace_cfg80211_return_bool(ret);
11241 return ret;
11242 }
11243 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11244
11245 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11246 struct wireless_dev *wdev, u32 nlportid,
11247 int freq, int sig_dbm,
11248 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11249 {
11250 struct net_device *netdev = wdev->netdev;
11251 struct sk_buff *msg;
11252 void *hdr;
11253
11254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11255 if (!msg)
11256 return -ENOMEM;
11257
11258 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11259 if (!hdr) {
11260 nlmsg_free(msg);
11261 return -ENOMEM;
11262 }
11263
11264 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11265 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11266 netdev->ifindex)) ||
11267 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11268 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11269 (sig_dbm &&
11270 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11271 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11272 (flags &&
11273 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11274 goto nla_put_failure;
11275
11276 genlmsg_end(msg, hdr);
11277
11278 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11279
11280 nla_put_failure:
11281 genlmsg_cancel(msg, hdr);
11282 nlmsg_free(msg);
11283 return -ENOBUFS;
11284 }
11285
11286 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11287 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11288 {
11289 struct wiphy *wiphy = wdev->wiphy;
11290 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11291 struct net_device *netdev = wdev->netdev;
11292 struct sk_buff *msg;
11293 void *hdr;
11294
11295 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11296
11297 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11298 if (!msg)
11299 return;
11300
11301 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11302 if (!hdr) {
11303 nlmsg_free(msg);
11304 return;
11305 }
11306
11307 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11308 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11309 netdev->ifindex)) ||
11310 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11311 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11312 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11313 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11314 goto nla_put_failure;
11315
11316 genlmsg_end(msg, hdr);
11317
11318 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11319 NL80211_MCGRP_MLME, gfp);
11320 return;
11321
11322 nla_put_failure:
11323 genlmsg_cancel(msg, hdr);
11324 nlmsg_free(msg);
11325 }
11326 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11327
11328 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11329 enum nl80211_cqm_rssi_threshold_event rssi_event,
11330 gfp_t gfp)
11331 {
11332 struct wireless_dev *wdev = dev->ieee80211_ptr;
11333 struct wiphy *wiphy = wdev->wiphy;
11334 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11335 struct sk_buff *msg;
11336 struct nlattr *pinfoattr;
11337 void *hdr;
11338
11339 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11340
11341 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11342 if (!msg)
11343 return;
11344
11345 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11346 if (!hdr) {
11347 nlmsg_free(msg);
11348 return;
11349 }
11350
11351 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11352 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11353 goto nla_put_failure;
11354
11355 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11356 if (!pinfoattr)
11357 goto nla_put_failure;
11358
11359 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11360 rssi_event))
11361 goto nla_put_failure;
11362
11363 nla_nest_end(msg, pinfoattr);
11364
11365 genlmsg_end(msg, hdr);
11366
11367 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11368 NL80211_MCGRP_MLME, gfp);
11369 return;
11370
11371 nla_put_failure:
11372 genlmsg_cancel(msg, hdr);
11373 nlmsg_free(msg);
11374 }
11375 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11376
11377 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11378 struct net_device *netdev, const u8 *bssid,
11379 const u8 *replay_ctr, gfp_t gfp)
11380 {
11381 struct sk_buff *msg;
11382 struct nlattr *rekey_attr;
11383 void *hdr;
11384
11385 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11386 if (!msg)
11387 return;
11388
11389 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11390 if (!hdr) {
11391 nlmsg_free(msg);
11392 return;
11393 }
11394
11395 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11396 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11397 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11398 goto nla_put_failure;
11399
11400 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11401 if (!rekey_attr)
11402 goto nla_put_failure;
11403
11404 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11405 NL80211_REPLAY_CTR_LEN, replay_ctr))
11406 goto nla_put_failure;
11407
11408 nla_nest_end(msg, rekey_attr);
11409
11410 genlmsg_end(msg, hdr);
11411
11412 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11413 NL80211_MCGRP_MLME, gfp);
11414 return;
11415
11416 nla_put_failure:
11417 genlmsg_cancel(msg, hdr);
11418 nlmsg_free(msg);
11419 }
11420
11421 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11422 const u8 *replay_ctr, gfp_t gfp)
11423 {
11424 struct wireless_dev *wdev = dev->ieee80211_ptr;
11425 struct wiphy *wiphy = wdev->wiphy;
11426 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11427
11428 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11429 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11430 }
11431 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11432
11433 static void
11434 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11435 struct net_device *netdev, int index,
11436 const u8 *bssid, bool preauth, gfp_t gfp)
11437 {
11438 struct sk_buff *msg;
11439 struct nlattr *attr;
11440 void *hdr;
11441
11442 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11443 if (!msg)
11444 return;
11445
11446 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11447 if (!hdr) {
11448 nlmsg_free(msg);
11449 return;
11450 }
11451
11452 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11453 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11454 goto nla_put_failure;
11455
11456 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11457 if (!attr)
11458 goto nla_put_failure;
11459
11460 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11461 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11462 (preauth &&
11463 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11464 goto nla_put_failure;
11465
11466 nla_nest_end(msg, attr);
11467
11468 genlmsg_end(msg, hdr);
11469
11470 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11471 NL80211_MCGRP_MLME, gfp);
11472 return;
11473
11474 nla_put_failure:
11475 genlmsg_cancel(msg, hdr);
11476 nlmsg_free(msg);
11477 }
11478
11479 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11480 const u8 *bssid, bool preauth, gfp_t gfp)
11481 {
11482 struct wireless_dev *wdev = dev->ieee80211_ptr;
11483 struct wiphy *wiphy = wdev->wiphy;
11484 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11485
11486 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11487 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11488 }
11489 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11490
11491 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11492 struct net_device *netdev,
11493 struct cfg80211_chan_def *chandef,
11494 gfp_t gfp)
11495 {
11496 struct sk_buff *msg;
11497 void *hdr;
11498
11499 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11500 if (!msg)
11501 return;
11502
11503 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11504 if (!hdr) {
11505 nlmsg_free(msg);
11506 return;
11507 }
11508
11509 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11510 goto nla_put_failure;
11511
11512 if (nl80211_send_chandef(msg, chandef))
11513 goto nla_put_failure;
11514
11515 genlmsg_end(msg, hdr);
11516
11517 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11518 NL80211_MCGRP_MLME, gfp);
11519 return;
11520
11521 nla_put_failure:
11522 genlmsg_cancel(msg, hdr);
11523 nlmsg_free(msg);
11524 }
11525
11526 void cfg80211_ch_switch_notify(struct net_device *dev,
11527 struct cfg80211_chan_def *chandef)
11528 {
11529 struct wireless_dev *wdev = dev->ieee80211_ptr;
11530 struct wiphy *wiphy = wdev->wiphy;
11531 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11532
11533 ASSERT_WDEV_LOCK(wdev);
11534
11535 trace_cfg80211_ch_switch_notify(dev, chandef);
11536
11537 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11538 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11539 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11540 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11541 return;
11542
11543 wdev->chandef = *chandef;
11544 wdev->preset_chandef = *chandef;
11545 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11546 }
11547 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11548
11549 void cfg80211_cqm_txe_notify(struct net_device *dev,
11550 const u8 *peer, u32 num_packets,
11551 u32 rate, u32 intvl, gfp_t gfp)
11552 {
11553 struct wireless_dev *wdev = dev->ieee80211_ptr;
11554 struct wiphy *wiphy = wdev->wiphy;
11555 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11556 struct sk_buff *msg;
11557 struct nlattr *pinfoattr;
11558 void *hdr;
11559
11560 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11561 if (!msg)
11562 return;
11563
11564 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11565 if (!hdr) {
11566 nlmsg_free(msg);
11567 return;
11568 }
11569
11570 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11571 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11572 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11573 goto nla_put_failure;
11574
11575 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11576 if (!pinfoattr)
11577 goto nla_put_failure;
11578
11579 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11580 goto nla_put_failure;
11581
11582 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11583 goto nla_put_failure;
11584
11585 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11586 goto nla_put_failure;
11587
11588 nla_nest_end(msg, pinfoattr);
11589
11590 genlmsg_end(msg, hdr);
11591
11592 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11593 NL80211_MCGRP_MLME, gfp);
11594 return;
11595
11596 nla_put_failure:
11597 genlmsg_cancel(msg, hdr);
11598 nlmsg_free(msg);
11599 }
11600 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11601
11602 void
11603 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11604 const struct cfg80211_chan_def *chandef,
11605 enum nl80211_radar_event event,
11606 struct net_device *netdev, gfp_t gfp)
11607 {
11608 struct sk_buff *msg;
11609 void *hdr;
11610
11611 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11612 if (!msg)
11613 return;
11614
11615 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11616 if (!hdr) {
11617 nlmsg_free(msg);
11618 return;
11619 }
11620
11621 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11622 goto nla_put_failure;
11623
11624 /* NOP and radar events don't need a netdev parameter */
11625 if (netdev) {
11626 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11627
11628 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11629 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11630 goto nla_put_failure;
11631 }
11632
11633 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11634 goto nla_put_failure;
11635
11636 if (nl80211_send_chandef(msg, chandef))
11637 goto nla_put_failure;
11638
11639 genlmsg_end(msg, hdr);
11640
11641 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11642 NL80211_MCGRP_MLME, gfp);
11643 return;
11644
11645 nla_put_failure:
11646 genlmsg_cancel(msg, hdr);
11647 nlmsg_free(msg);
11648 }
11649
11650 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11651 const u8 *peer, u32 num_packets, gfp_t gfp)
11652 {
11653 struct wireless_dev *wdev = dev->ieee80211_ptr;
11654 struct wiphy *wiphy = wdev->wiphy;
11655 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11656 struct sk_buff *msg;
11657 struct nlattr *pinfoattr;
11658 void *hdr;
11659
11660 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11661
11662 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11663 if (!msg)
11664 return;
11665
11666 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11667 if (!hdr) {
11668 nlmsg_free(msg);
11669 return;
11670 }
11671
11672 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11673 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11674 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11675 goto nla_put_failure;
11676
11677 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11678 if (!pinfoattr)
11679 goto nla_put_failure;
11680
11681 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11682 goto nla_put_failure;
11683
11684 nla_nest_end(msg, pinfoattr);
11685
11686 genlmsg_end(msg, hdr);
11687
11688 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11689 NL80211_MCGRP_MLME, gfp);
11690 return;
11691
11692 nla_put_failure:
11693 genlmsg_cancel(msg, hdr);
11694 nlmsg_free(msg);
11695 }
11696 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11697
11698 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11699 u64 cookie, bool acked, gfp_t gfp)
11700 {
11701 struct wireless_dev *wdev = dev->ieee80211_ptr;
11702 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11703 struct sk_buff *msg;
11704 void *hdr;
11705
11706 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11707
11708 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11709
11710 if (!msg)
11711 return;
11712
11713 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11714 if (!hdr) {
11715 nlmsg_free(msg);
11716 return;
11717 }
11718
11719 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11720 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11721 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11722 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11723 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11724 goto nla_put_failure;
11725
11726 genlmsg_end(msg, hdr);
11727
11728 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11729 NL80211_MCGRP_MLME, gfp);
11730 return;
11731
11732 nla_put_failure:
11733 genlmsg_cancel(msg, hdr);
11734 nlmsg_free(msg);
11735 }
11736 EXPORT_SYMBOL(cfg80211_probe_status);
11737
11738 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11739 const u8 *frame, size_t len,
11740 int freq, int sig_dbm)
11741 {
11742 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11743 struct sk_buff *msg;
11744 void *hdr;
11745 struct cfg80211_beacon_registration *reg;
11746
11747 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11748
11749 spin_lock_bh(&rdev->beacon_registrations_lock);
11750 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11751 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11752 if (!msg) {
11753 spin_unlock_bh(&rdev->beacon_registrations_lock);
11754 return;
11755 }
11756
11757 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11758 if (!hdr)
11759 goto nla_put_failure;
11760
11761 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11762 (freq &&
11763 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11764 (sig_dbm &&
11765 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11766 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11767 goto nla_put_failure;
11768
11769 genlmsg_end(msg, hdr);
11770
11771 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11772 }
11773 spin_unlock_bh(&rdev->beacon_registrations_lock);
11774 return;
11775
11776 nla_put_failure:
11777 spin_unlock_bh(&rdev->beacon_registrations_lock);
11778 if (hdr)
11779 genlmsg_cancel(msg, hdr);
11780 nlmsg_free(msg);
11781 }
11782 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11783
11784 #ifdef CONFIG_PM
11785 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11786 struct cfg80211_wowlan_wakeup *wakeup,
11787 gfp_t gfp)
11788 {
11789 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11790 struct sk_buff *msg;
11791 void *hdr;
11792 int size = 200;
11793
11794 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11795
11796 if (wakeup)
11797 size += wakeup->packet_present_len;
11798
11799 msg = nlmsg_new(size, gfp);
11800 if (!msg)
11801 return;
11802
11803 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11804 if (!hdr)
11805 goto free_msg;
11806
11807 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11808 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11809 goto free_msg;
11810
11811 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11812 wdev->netdev->ifindex))
11813 goto free_msg;
11814
11815 if (wakeup) {
11816 struct nlattr *reasons;
11817
11818 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11819 if (!reasons)
11820 goto free_msg;
11821
11822 if (wakeup->disconnect &&
11823 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11824 goto free_msg;
11825 if (wakeup->magic_pkt &&
11826 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11827 goto free_msg;
11828 if (wakeup->gtk_rekey_failure &&
11829 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11830 goto free_msg;
11831 if (wakeup->eap_identity_req &&
11832 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11833 goto free_msg;
11834 if (wakeup->four_way_handshake &&
11835 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11836 goto free_msg;
11837 if (wakeup->rfkill_release &&
11838 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11839 goto free_msg;
11840
11841 if (wakeup->pattern_idx >= 0 &&
11842 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11843 wakeup->pattern_idx))
11844 goto free_msg;
11845
11846 if (wakeup->tcp_match &&
11847 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11848 goto free_msg;
11849
11850 if (wakeup->tcp_connlost &&
11851 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11852 goto free_msg;
11853
11854 if (wakeup->tcp_nomoretokens &&
11855 nla_put_flag(msg,
11856 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11857 goto free_msg;
11858
11859 if (wakeup->packet) {
11860 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11861 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11862
11863 if (!wakeup->packet_80211) {
11864 pkt_attr =
11865 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11866 len_attr =
11867 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11868 }
11869
11870 if (wakeup->packet_len &&
11871 nla_put_u32(msg, len_attr, wakeup->packet_len))
11872 goto free_msg;
11873
11874 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11875 wakeup->packet))
11876 goto free_msg;
11877 }
11878
11879 nla_nest_end(msg, reasons);
11880 }
11881
11882 genlmsg_end(msg, hdr);
11883
11884 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11885 NL80211_MCGRP_MLME, gfp);
11886 return;
11887
11888 free_msg:
11889 nlmsg_free(msg);
11890 }
11891 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11892 #endif
11893
11894 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11895 enum nl80211_tdls_operation oper,
11896 u16 reason_code, gfp_t gfp)
11897 {
11898 struct wireless_dev *wdev = dev->ieee80211_ptr;
11899 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11900 struct sk_buff *msg;
11901 void *hdr;
11902
11903 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11904 reason_code);
11905
11906 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11907 if (!msg)
11908 return;
11909
11910 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11911 if (!hdr) {
11912 nlmsg_free(msg);
11913 return;
11914 }
11915
11916 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11917 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11918 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11919 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11920 (reason_code > 0 &&
11921 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11922 goto nla_put_failure;
11923
11924 genlmsg_end(msg, hdr);
11925
11926 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11927 NL80211_MCGRP_MLME, gfp);
11928 return;
11929
11930 nla_put_failure:
11931 genlmsg_cancel(msg, hdr);
11932 nlmsg_free(msg);
11933 }
11934 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11935
11936 static int nl80211_netlink_notify(struct notifier_block * nb,
11937 unsigned long state,
11938 void *_notify)
11939 {
11940 struct netlink_notify *notify = _notify;
11941 struct cfg80211_registered_device *rdev;
11942 struct wireless_dev *wdev;
11943 struct cfg80211_beacon_registration *reg, *tmp;
11944
11945 if (state != NETLINK_URELEASE)
11946 return NOTIFY_DONE;
11947
11948 rcu_read_lock();
11949
11950 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11951 bool schedule_destroy_work = false;
11952
11953 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
11954 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11955
11956 if (wdev->owner_nlportid == notify->portid)
11957 schedule_destroy_work = true;
11958 }
11959
11960 spin_lock_bh(&rdev->beacon_registrations_lock);
11961 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11962 list) {
11963 if (reg->nlportid == notify->portid) {
11964 list_del(&reg->list);
11965 kfree(reg);
11966 break;
11967 }
11968 }
11969 spin_unlock_bh(&rdev->beacon_registrations_lock);
11970
11971 if (schedule_destroy_work) {
11972 struct cfg80211_iface_destroy *destroy;
11973
11974 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
11975 if (destroy) {
11976 destroy->nlportid = notify->portid;
11977 spin_lock(&rdev->destroy_list_lock);
11978 list_add(&destroy->list, &rdev->destroy_list);
11979 spin_unlock(&rdev->destroy_list_lock);
11980 schedule_work(&rdev->destroy_work);
11981 }
11982 }
11983 }
11984
11985 rcu_read_unlock();
11986
11987 return NOTIFY_OK;
11988 }
11989
11990 static struct notifier_block nl80211_netlink_notifier = {
11991 .notifier_call = nl80211_netlink_notify,
11992 };
11993
11994 void cfg80211_ft_event(struct net_device *netdev,
11995 struct cfg80211_ft_event_params *ft_event)
11996 {
11997 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11998 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11999 struct sk_buff *msg;
12000 void *hdr;
12001
12002 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12003
12004 if (!ft_event->target_ap)
12005 return;
12006
12007 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12008 if (!msg)
12009 return;
12010
12011 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12012 if (!hdr)
12013 goto out;
12014
12015 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12016 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12017 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12018 goto out;
12019
12020 if (ft_event->ies &&
12021 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12022 goto out;
12023 if (ft_event->ric_ies &&
12024 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12025 ft_event->ric_ies))
12026 goto out;
12027
12028 genlmsg_end(msg, hdr);
12029
12030 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12031 NL80211_MCGRP_MLME, GFP_KERNEL);
12032 return;
12033 out:
12034 nlmsg_free(msg);
12035 }
12036 EXPORT_SYMBOL(cfg80211_ft_event);
12037
12038 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12039 {
12040 struct cfg80211_registered_device *rdev;
12041 struct sk_buff *msg;
12042 void *hdr;
12043 u32 nlportid;
12044
12045 rdev = wiphy_to_rdev(wdev->wiphy);
12046 if (!rdev->crit_proto_nlportid)
12047 return;
12048
12049 nlportid = rdev->crit_proto_nlportid;
12050 rdev->crit_proto_nlportid = 0;
12051
12052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12053 if (!msg)
12054 return;
12055
12056 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12057 if (!hdr)
12058 goto nla_put_failure;
12059
12060 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12061 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12062 goto nla_put_failure;
12063
12064 genlmsg_end(msg, hdr);
12065
12066 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12067 return;
12068
12069 nla_put_failure:
12070 if (hdr)
12071 genlmsg_cancel(msg, hdr);
12072 nlmsg_free(msg);
12073
12074 }
12075 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12076
12077 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12078 {
12079 struct wiphy *wiphy = wdev->wiphy;
12080 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12081 struct sk_buff *msg;
12082 void *hdr;
12083
12084 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12085 if (!msg)
12086 return;
12087
12088 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12089 if (!hdr)
12090 goto out;
12091
12092 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12093 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12094 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12095 goto out;
12096
12097 genlmsg_end(msg, hdr);
12098
12099 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12100 NL80211_MCGRP_MLME, GFP_KERNEL);
12101 return;
12102 out:
12103 nlmsg_free(msg);
12104 }
12105
12106 /* initialisation/exit functions */
12107
12108 int nl80211_init(void)
12109 {
12110 int err;
12111
12112 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12113 nl80211_mcgrps);
12114 if (err)
12115 return err;
12116
12117 err = netlink_register_notifier(&nl80211_netlink_notifier);
12118 if (err)
12119 goto err_out;
12120
12121 return 0;
12122 err_out:
12123 genl_unregister_family(&nl80211_fam);
12124 return err;
12125 }
12126
12127 void nl80211_exit(void)
12128 {
12129 netlink_unregister_notifier(&nl80211_netlink_notifier);
12130 genl_unregister_family(&nl80211_fam);
12131 }
Linux kernel - Deliverables
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