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cfg80211: fix set but not used warning in nl80211_channel_switch()
[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.features &
1518 NL80211_FEATURE_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 ||
2609 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2610 info->attrs[NL80211_ATTR_MAC]) {
2611 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2612 ETH_ALEN);
2613 if (!is_valid_ether_addr(params.macaddr))
2614 return -EADDRNOTAVAIL;
2615 }
2616
2617 if (info->attrs[NL80211_ATTR_4ADDR]) {
2618 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2619 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2620 if (err)
2621 return err;
2622 }
2623
2624 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2625 if (!msg)
2626 return -ENOMEM;
2627
2628 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2629 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2630 &flags);
2631
2632 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2633 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2634 return -EOPNOTSUPP;
2635
2636 wdev = rdev_add_virtual_intf(rdev,
2637 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2638 type, err ? NULL : &flags, &params);
2639 if (IS_ERR(wdev)) {
2640 nlmsg_free(msg);
2641 return PTR_ERR(wdev);
2642 }
2643
2644 if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2645 wdev->owner_nlportid = info->snd_portid;
2646
2647 switch (type) {
2648 case NL80211_IFTYPE_MESH_POINT:
2649 if (!info->attrs[NL80211_ATTR_MESH_ID])
2650 break;
2651 wdev_lock(wdev);
2652 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2653 IEEE80211_MAX_MESH_ID_LEN);
2654 wdev->mesh_id_up_len =
2655 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2656 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2657 wdev->mesh_id_up_len);
2658 wdev_unlock(wdev);
2659 break;
2660 case NL80211_IFTYPE_P2P_DEVICE:
2661 /*
2662 * P2P Device doesn't have a netdev, so doesn't go
2663 * through the netdev notifier and must be added here
2664 */
2665 mutex_init(&wdev->mtx);
2666 INIT_LIST_HEAD(&wdev->event_list);
2667 spin_lock_init(&wdev->event_lock);
2668 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2669 spin_lock_init(&wdev->mgmt_registrations_lock);
2670
2671 wdev->identifier = ++rdev->wdev_id;
2672 list_add_rcu(&wdev->list, &rdev->wdev_list);
2673 rdev->devlist_generation++;
2674 break;
2675 default:
2676 break;
2677 }
2678
2679 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2680 rdev, wdev) < 0) {
2681 nlmsg_free(msg);
2682 return -ENOBUFS;
2683 }
2684
2685 return genlmsg_reply(msg, info);
2686 }
2687
2688 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2689 {
2690 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2691 struct wireless_dev *wdev = info->user_ptr[1];
2692
2693 if (!rdev->ops->del_virtual_intf)
2694 return -EOPNOTSUPP;
2695
2696 /*
2697 * If we remove a wireless device without a netdev then clear
2698 * user_ptr[1] so that nl80211_post_doit won't dereference it
2699 * to check if it needs to do dev_put(). Otherwise it crashes
2700 * since the wdev has been freed, unlike with a netdev where
2701 * we need the dev_put() for the netdev to really be freed.
2702 */
2703 if (!wdev->netdev)
2704 info->user_ptr[1] = NULL;
2705
2706 return rdev_del_virtual_intf(rdev, wdev);
2707 }
2708
2709 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2710 {
2711 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2712 struct net_device *dev = info->user_ptr[1];
2713 u16 noack_map;
2714
2715 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2716 return -EINVAL;
2717
2718 if (!rdev->ops->set_noack_map)
2719 return -EOPNOTSUPP;
2720
2721 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2722
2723 return rdev_set_noack_map(rdev, dev, noack_map);
2724 }
2725
2726 struct get_key_cookie {
2727 struct sk_buff *msg;
2728 int error;
2729 int idx;
2730 };
2731
2732 static void get_key_callback(void *c, struct key_params *params)
2733 {
2734 struct nlattr *key;
2735 struct get_key_cookie *cookie = c;
2736
2737 if ((params->key &&
2738 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2739 params->key_len, params->key)) ||
2740 (params->seq &&
2741 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2742 params->seq_len, params->seq)) ||
2743 (params->cipher &&
2744 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2745 params->cipher)))
2746 goto nla_put_failure;
2747
2748 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2749 if (!key)
2750 goto nla_put_failure;
2751
2752 if ((params->key &&
2753 nla_put(cookie->msg, NL80211_KEY_DATA,
2754 params->key_len, params->key)) ||
2755 (params->seq &&
2756 nla_put(cookie->msg, NL80211_KEY_SEQ,
2757 params->seq_len, params->seq)) ||
2758 (params->cipher &&
2759 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2760 params->cipher)))
2761 goto nla_put_failure;
2762
2763 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2764 goto nla_put_failure;
2765
2766 nla_nest_end(cookie->msg, key);
2767
2768 return;
2769 nla_put_failure:
2770 cookie->error = 1;
2771 }
2772
2773 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2774 {
2775 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2776 int err;
2777 struct net_device *dev = info->user_ptr[1];
2778 u8 key_idx = 0;
2779 const u8 *mac_addr = NULL;
2780 bool pairwise;
2781 struct get_key_cookie cookie = {
2782 .error = 0,
2783 };
2784 void *hdr;
2785 struct sk_buff *msg;
2786
2787 if (info->attrs[NL80211_ATTR_KEY_IDX])
2788 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2789
2790 if (key_idx > 5)
2791 return -EINVAL;
2792
2793 if (info->attrs[NL80211_ATTR_MAC])
2794 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2795
2796 pairwise = !!mac_addr;
2797 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2798 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2799 if (kt >= NUM_NL80211_KEYTYPES)
2800 return -EINVAL;
2801 if (kt != NL80211_KEYTYPE_GROUP &&
2802 kt != NL80211_KEYTYPE_PAIRWISE)
2803 return -EINVAL;
2804 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2805 }
2806
2807 if (!rdev->ops->get_key)
2808 return -EOPNOTSUPP;
2809
2810 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2811 if (!msg)
2812 return -ENOMEM;
2813
2814 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2815 NL80211_CMD_NEW_KEY);
2816 if (!hdr)
2817 goto nla_put_failure;
2818
2819 cookie.msg = msg;
2820 cookie.idx = key_idx;
2821
2822 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2823 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2824 goto nla_put_failure;
2825 if (mac_addr &&
2826 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2827 goto nla_put_failure;
2828
2829 if (pairwise && mac_addr &&
2830 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2831 return -ENOENT;
2832
2833 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2834 get_key_callback);
2835
2836 if (err)
2837 goto free_msg;
2838
2839 if (cookie.error)
2840 goto nla_put_failure;
2841
2842 genlmsg_end(msg, hdr);
2843 return genlmsg_reply(msg, info);
2844
2845 nla_put_failure:
2846 err = -ENOBUFS;
2847 free_msg:
2848 nlmsg_free(msg);
2849 return err;
2850 }
2851
2852 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2853 {
2854 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2855 struct key_parse key;
2856 int err;
2857 struct net_device *dev = info->user_ptr[1];
2858
2859 err = nl80211_parse_key(info, &key);
2860 if (err)
2861 return err;
2862
2863 if (key.idx < 0)
2864 return -EINVAL;
2865
2866 /* only support setting default key */
2867 if (!key.def && !key.defmgmt)
2868 return -EINVAL;
2869
2870 wdev_lock(dev->ieee80211_ptr);
2871
2872 if (key.def) {
2873 if (!rdev->ops->set_default_key) {
2874 err = -EOPNOTSUPP;
2875 goto out;
2876 }
2877
2878 err = nl80211_key_allowed(dev->ieee80211_ptr);
2879 if (err)
2880 goto out;
2881
2882 err = rdev_set_default_key(rdev, dev, key.idx,
2883 key.def_uni, key.def_multi);
2884
2885 if (err)
2886 goto out;
2887
2888 #ifdef CONFIG_CFG80211_WEXT
2889 dev->ieee80211_ptr->wext.default_key = key.idx;
2890 #endif
2891 } else {
2892 if (key.def_uni || !key.def_multi) {
2893 err = -EINVAL;
2894 goto out;
2895 }
2896
2897 if (!rdev->ops->set_default_mgmt_key) {
2898 err = -EOPNOTSUPP;
2899 goto out;
2900 }
2901
2902 err = nl80211_key_allowed(dev->ieee80211_ptr);
2903 if (err)
2904 goto out;
2905
2906 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2907 if (err)
2908 goto out;
2909
2910 #ifdef CONFIG_CFG80211_WEXT
2911 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2912 #endif
2913 }
2914
2915 out:
2916 wdev_unlock(dev->ieee80211_ptr);
2917
2918 return err;
2919 }
2920
2921 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2922 {
2923 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2924 int err;
2925 struct net_device *dev = info->user_ptr[1];
2926 struct key_parse key;
2927 const u8 *mac_addr = NULL;
2928
2929 err = nl80211_parse_key(info, &key);
2930 if (err)
2931 return err;
2932
2933 if (!key.p.key)
2934 return -EINVAL;
2935
2936 if (info->attrs[NL80211_ATTR_MAC])
2937 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2938
2939 if (key.type == -1) {
2940 if (mac_addr)
2941 key.type = NL80211_KEYTYPE_PAIRWISE;
2942 else
2943 key.type = NL80211_KEYTYPE_GROUP;
2944 }
2945
2946 /* for now */
2947 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2948 key.type != NL80211_KEYTYPE_GROUP)
2949 return -EINVAL;
2950
2951 if (!rdev->ops->add_key)
2952 return -EOPNOTSUPP;
2953
2954 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2955 key.type == NL80211_KEYTYPE_PAIRWISE,
2956 mac_addr))
2957 return -EINVAL;
2958
2959 wdev_lock(dev->ieee80211_ptr);
2960 err = nl80211_key_allowed(dev->ieee80211_ptr);
2961 if (!err)
2962 err = rdev_add_key(rdev, dev, key.idx,
2963 key.type == NL80211_KEYTYPE_PAIRWISE,
2964 mac_addr, &key.p);
2965 wdev_unlock(dev->ieee80211_ptr);
2966
2967 return err;
2968 }
2969
2970 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2971 {
2972 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2973 int err;
2974 struct net_device *dev = info->user_ptr[1];
2975 u8 *mac_addr = NULL;
2976 struct key_parse key;
2977
2978 err = nl80211_parse_key(info, &key);
2979 if (err)
2980 return err;
2981
2982 if (info->attrs[NL80211_ATTR_MAC])
2983 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2984
2985 if (key.type == -1) {
2986 if (mac_addr)
2987 key.type = NL80211_KEYTYPE_PAIRWISE;
2988 else
2989 key.type = NL80211_KEYTYPE_GROUP;
2990 }
2991
2992 /* for now */
2993 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2994 key.type != NL80211_KEYTYPE_GROUP)
2995 return -EINVAL;
2996
2997 if (!rdev->ops->del_key)
2998 return -EOPNOTSUPP;
2999
3000 wdev_lock(dev->ieee80211_ptr);
3001 err = nl80211_key_allowed(dev->ieee80211_ptr);
3002
3003 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3004 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3005 err = -ENOENT;
3006
3007 if (!err)
3008 err = rdev_del_key(rdev, dev, key.idx,
3009 key.type == NL80211_KEYTYPE_PAIRWISE,
3010 mac_addr);
3011
3012 #ifdef CONFIG_CFG80211_WEXT
3013 if (!err) {
3014 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3015 dev->ieee80211_ptr->wext.default_key = -1;
3016 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3017 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3018 }
3019 #endif
3020 wdev_unlock(dev->ieee80211_ptr);
3021
3022 return err;
3023 }
3024
3025 /* This function returns an error or the number of nested attributes */
3026 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3027 {
3028 struct nlattr *attr;
3029 int n_entries = 0, tmp;
3030
3031 nla_for_each_nested(attr, nl_attr, tmp) {
3032 if (nla_len(attr) != ETH_ALEN)
3033 return -EINVAL;
3034
3035 n_entries++;
3036 }
3037
3038 return n_entries;
3039 }
3040
3041 /*
3042 * This function parses ACL information and allocates memory for ACL data.
3043 * On successful return, the calling function is responsible to free the
3044 * ACL buffer returned by this function.
3045 */
3046 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3047 struct genl_info *info)
3048 {
3049 enum nl80211_acl_policy acl_policy;
3050 struct nlattr *attr;
3051 struct cfg80211_acl_data *acl;
3052 int i = 0, n_entries, tmp;
3053
3054 if (!wiphy->max_acl_mac_addrs)
3055 return ERR_PTR(-EOPNOTSUPP);
3056
3057 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3058 return ERR_PTR(-EINVAL);
3059
3060 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3061 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3062 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3063 return ERR_PTR(-EINVAL);
3064
3065 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3066 return ERR_PTR(-EINVAL);
3067
3068 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3069 if (n_entries < 0)
3070 return ERR_PTR(n_entries);
3071
3072 if (n_entries > wiphy->max_acl_mac_addrs)
3073 return ERR_PTR(-ENOTSUPP);
3074
3075 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3076 GFP_KERNEL);
3077 if (!acl)
3078 return ERR_PTR(-ENOMEM);
3079
3080 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3081 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3082 i++;
3083 }
3084
3085 acl->n_acl_entries = n_entries;
3086 acl->acl_policy = acl_policy;
3087
3088 return acl;
3089 }
3090
3091 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3092 {
3093 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3094 struct net_device *dev = info->user_ptr[1];
3095 struct cfg80211_acl_data *acl;
3096 int err;
3097
3098 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3099 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3100 return -EOPNOTSUPP;
3101
3102 if (!dev->ieee80211_ptr->beacon_interval)
3103 return -EINVAL;
3104
3105 acl = parse_acl_data(&rdev->wiphy, info);
3106 if (IS_ERR(acl))
3107 return PTR_ERR(acl);
3108
3109 err = rdev_set_mac_acl(rdev, dev, acl);
3110
3111 kfree(acl);
3112
3113 return err;
3114 }
3115
3116 static int nl80211_parse_beacon(struct nlattr *attrs[],
3117 struct cfg80211_beacon_data *bcn)
3118 {
3119 bool haveinfo = false;
3120
3121 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3122 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3123 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3124 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3125 return -EINVAL;
3126
3127 memset(bcn, 0, sizeof(*bcn));
3128
3129 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3130 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3131 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3132 if (!bcn->head_len)
3133 return -EINVAL;
3134 haveinfo = true;
3135 }
3136
3137 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3138 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3139 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3140 haveinfo = true;
3141 }
3142
3143 if (!haveinfo)
3144 return -EINVAL;
3145
3146 if (attrs[NL80211_ATTR_IE]) {
3147 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3148 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3149 }
3150
3151 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3152 bcn->proberesp_ies =
3153 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3154 bcn->proberesp_ies_len =
3155 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3156 }
3157
3158 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3159 bcn->assocresp_ies =
3160 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3161 bcn->assocresp_ies_len =
3162 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3163 }
3164
3165 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3166 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3167 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3168 }
3169
3170 return 0;
3171 }
3172
3173 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3174 struct cfg80211_ap_settings *params)
3175 {
3176 struct wireless_dev *wdev;
3177 bool ret = false;
3178
3179 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3180 if (wdev->iftype != NL80211_IFTYPE_AP &&
3181 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3182 continue;
3183
3184 if (!wdev->preset_chandef.chan)
3185 continue;
3186
3187 params->chandef = wdev->preset_chandef;
3188 ret = true;
3189 break;
3190 }
3191
3192 return ret;
3193 }
3194
3195 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3196 enum nl80211_auth_type auth_type,
3197 enum nl80211_commands cmd)
3198 {
3199 if (auth_type > NL80211_AUTHTYPE_MAX)
3200 return false;
3201
3202 switch (cmd) {
3203 case NL80211_CMD_AUTHENTICATE:
3204 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3205 auth_type == NL80211_AUTHTYPE_SAE)
3206 return false;
3207 return true;
3208 case NL80211_CMD_CONNECT:
3209 case NL80211_CMD_START_AP:
3210 /* SAE not supported yet */
3211 if (auth_type == NL80211_AUTHTYPE_SAE)
3212 return false;
3213 return true;
3214 default:
3215 return false;
3216 }
3217 }
3218
3219 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3220 {
3221 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3222 struct net_device *dev = info->user_ptr[1];
3223 struct wireless_dev *wdev = dev->ieee80211_ptr;
3224 struct cfg80211_ap_settings params;
3225 int err;
3226
3227 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3228 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3229 return -EOPNOTSUPP;
3230
3231 if (!rdev->ops->start_ap)
3232 return -EOPNOTSUPP;
3233
3234 if (wdev->beacon_interval)
3235 return -EALREADY;
3236
3237 memset(&params, 0, sizeof(params));
3238
3239 /* these are required for START_AP */
3240 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3241 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3242 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3243 return -EINVAL;
3244
3245 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3246 if (err)
3247 return err;
3248
3249 params.beacon_interval =
3250 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3251 params.dtim_period =
3252 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3253
3254 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3255 if (err)
3256 return err;
3257
3258 /*
3259 * In theory, some of these attributes should be required here
3260 * but since they were not used when the command was originally
3261 * added, keep them optional for old user space programs to let
3262 * them continue to work with drivers that do not need the
3263 * additional information -- drivers must check!
3264 */
3265 if (info->attrs[NL80211_ATTR_SSID]) {
3266 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3267 params.ssid_len =
3268 nla_len(info->attrs[NL80211_ATTR_SSID]);
3269 if (params.ssid_len == 0 ||
3270 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3271 return -EINVAL;
3272 }
3273
3274 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3275 params.hidden_ssid = nla_get_u32(
3276 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3277 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3278 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3279 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3280 return -EINVAL;
3281 }
3282
3283 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3284
3285 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3286 params.auth_type = nla_get_u32(
3287 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3288 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3289 NL80211_CMD_START_AP))
3290 return -EINVAL;
3291 } else
3292 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3293
3294 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3295 NL80211_MAX_NR_CIPHER_SUITES);
3296 if (err)
3297 return err;
3298
3299 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3300 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3301 return -EOPNOTSUPP;
3302 params.inactivity_timeout = nla_get_u16(
3303 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3304 }
3305
3306 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3307 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3308 return -EINVAL;
3309 params.p2p_ctwindow =
3310 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3311 if (params.p2p_ctwindow > 127)
3312 return -EINVAL;
3313 if (params.p2p_ctwindow != 0 &&
3314 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3315 return -EINVAL;
3316 }
3317
3318 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3319 u8 tmp;
3320
3321 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3322 return -EINVAL;
3323 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3324 if (tmp > 1)
3325 return -EINVAL;
3326 params.p2p_opp_ps = tmp;
3327 if (params.p2p_opp_ps != 0 &&
3328 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3329 return -EINVAL;
3330 }
3331
3332 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3333 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3334 if (err)
3335 return err;
3336 } else if (wdev->preset_chandef.chan) {
3337 params.chandef = wdev->preset_chandef;
3338 } else if (!nl80211_get_ap_channel(rdev, &params))
3339 return -EINVAL;
3340
3341 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3342 wdev->iftype))
3343 return -EINVAL;
3344
3345 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3346 params.acl = parse_acl_data(&rdev->wiphy, info);
3347 if (IS_ERR(params.acl))
3348 return PTR_ERR(params.acl);
3349 }
3350
3351 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3352 params.smps_mode =
3353 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3354 switch (params.smps_mode) {
3355 case NL80211_SMPS_OFF:
3356 break;
3357 case NL80211_SMPS_STATIC:
3358 if (!(rdev->wiphy.features &
3359 NL80211_FEATURE_STATIC_SMPS))
3360 return -EINVAL;
3361 break;
3362 case NL80211_SMPS_DYNAMIC:
3363 if (!(rdev->wiphy.features &
3364 NL80211_FEATURE_DYNAMIC_SMPS))
3365 return -EINVAL;
3366 break;
3367 default:
3368 return -EINVAL;
3369 }
3370 } else {
3371 params.smps_mode = NL80211_SMPS_OFF;
3372 }
3373
3374 wdev_lock(wdev);
3375 err = rdev_start_ap(rdev, dev, &params);
3376 if (!err) {
3377 wdev->preset_chandef = params.chandef;
3378 wdev->beacon_interval = params.beacon_interval;
3379 wdev->chandef = params.chandef;
3380 wdev->ssid_len = params.ssid_len;
3381 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3382 }
3383 wdev_unlock(wdev);
3384
3385 kfree(params.acl);
3386
3387 return err;
3388 }
3389
3390 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3391 {
3392 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3393 struct net_device *dev = info->user_ptr[1];
3394 struct wireless_dev *wdev = dev->ieee80211_ptr;
3395 struct cfg80211_beacon_data params;
3396 int err;
3397
3398 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3399 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3400 return -EOPNOTSUPP;
3401
3402 if (!rdev->ops->change_beacon)
3403 return -EOPNOTSUPP;
3404
3405 if (!wdev->beacon_interval)
3406 return -EINVAL;
3407
3408 err = nl80211_parse_beacon(info->attrs, &params);
3409 if (err)
3410 return err;
3411
3412 wdev_lock(wdev);
3413 err = rdev_change_beacon(rdev, dev, &params);
3414 wdev_unlock(wdev);
3415
3416 return err;
3417 }
3418
3419 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3420 {
3421 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3422 struct net_device *dev = info->user_ptr[1];
3423
3424 return cfg80211_stop_ap(rdev, dev, false);
3425 }
3426
3427 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3428 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3429 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3430 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3431 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3432 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3433 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3434 };
3435
3436 static int parse_station_flags(struct genl_info *info,
3437 enum nl80211_iftype iftype,
3438 struct station_parameters *params)
3439 {
3440 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3441 struct nlattr *nla;
3442 int flag;
3443
3444 /*
3445 * Try parsing the new attribute first so userspace
3446 * can specify both for older kernels.
3447 */
3448 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3449 if (nla) {
3450 struct nl80211_sta_flag_update *sta_flags;
3451
3452 sta_flags = nla_data(nla);
3453 params->sta_flags_mask = sta_flags->mask;
3454 params->sta_flags_set = sta_flags->set;
3455 params->sta_flags_set &= params->sta_flags_mask;
3456 if ((params->sta_flags_mask |
3457 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3458 return -EINVAL;
3459 return 0;
3460 }
3461
3462 /* if present, parse the old attribute */
3463
3464 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3465 if (!nla)
3466 return 0;
3467
3468 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3469 nla, sta_flags_policy))
3470 return -EINVAL;
3471
3472 /*
3473 * Only allow certain flags for interface types so that
3474 * other attributes are silently ignored. Remember that
3475 * this is backward compatibility code with old userspace
3476 * and shouldn't be hit in other cases anyway.
3477 */
3478 switch (iftype) {
3479 case NL80211_IFTYPE_AP:
3480 case NL80211_IFTYPE_AP_VLAN:
3481 case NL80211_IFTYPE_P2P_GO:
3482 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3483 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3484 BIT(NL80211_STA_FLAG_WME) |
3485 BIT(NL80211_STA_FLAG_MFP);
3486 break;
3487 case NL80211_IFTYPE_P2P_CLIENT:
3488 case NL80211_IFTYPE_STATION:
3489 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3490 BIT(NL80211_STA_FLAG_TDLS_PEER);
3491 break;
3492 case NL80211_IFTYPE_MESH_POINT:
3493 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3494 BIT(NL80211_STA_FLAG_MFP) |
3495 BIT(NL80211_STA_FLAG_AUTHORIZED);
3496 default:
3497 return -EINVAL;
3498 }
3499
3500 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3501 if (flags[flag]) {
3502 params->sta_flags_set |= (1<<flag);
3503
3504 /* no longer support new API additions in old API */
3505 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3506 return -EINVAL;
3507 }
3508 }
3509
3510 return 0;
3511 }
3512
3513 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3514 int attr)
3515 {
3516 struct nlattr *rate;
3517 u32 bitrate;
3518 u16 bitrate_compat;
3519
3520 rate = nla_nest_start(msg, attr);
3521 if (!rate)
3522 return false;
3523
3524 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3525 bitrate = cfg80211_calculate_bitrate(info);
3526 /* report 16-bit bitrate only if we can */
3527 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3528 if (bitrate > 0 &&
3529 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3530 return false;
3531 if (bitrate_compat > 0 &&
3532 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3533 return false;
3534
3535 if (info->flags & RATE_INFO_FLAGS_MCS) {
3536 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3537 return false;
3538 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3539 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3540 return false;
3541 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3542 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3543 return false;
3544 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3545 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3546 return false;
3547 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3548 return false;
3549 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3550 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3551 return false;
3552 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3553 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3554 return false;
3555 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3556 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3557 return false;
3558 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3559 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3560 return false;
3561 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3562 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3563 return false;
3564 }
3565
3566 nla_nest_end(msg, rate);
3567 return true;
3568 }
3569
3570 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3571 int id)
3572 {
3573 void *attr;
3574 int i = 0;
3575
3576 if (!mask)
3577 return true;
3578
3579 attr = nla_nest_start(msg, id);
3580 if (!attr)
3581 return false;
3582
3583 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3584 if (!(mask & BIT(i)))
3585 continue;
3586
3587 if (nla_put_u8(msg, i, signal[i]))
3588 return false;
3589 }
3590
3591 nla_nest_end(msg, attr);
3592
3593 return true;
3594 }
3595
3596 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3597 int flags,
3598 struct cfg80211_registered_device *rdev,
3599 struct net_device *dev,
3600 const u8 *mac_addr, struct station_info *sinfo)
3601 {
3602 void *hdr;
3603 struct nlattr *sinfoattr, *bss_param;
3604
3605 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3606 if (!hdr)
3607 return -1;
3608
3609 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3610 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3611 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3612 goto nla_put_failure;
3613
3614 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3615 if (!sinfoattr)
3616 goto nla_put_failure;
3617 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3618 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3619 sinfo->connected_time))
3620 goto nla_put_failure;
3621 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3622 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3623 sinfo->inactive_time))
3624 goto nla_put_failure;
3625 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3626 STATION_INFO_RX_BYTES64)) &&
3627 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3628 (u32)sinfo->rx_bytes))
3629 goto nla_put_failure;
3630 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3631 STATION_INFO_TX_BYTES64)) &&
3632 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3633 (u32)sinfo->tx_bytes))
3634 goto nla_put_failure;
3635 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3636 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3637 sinfo->rx_bytes))
3638 goto nla_put_failure;
3639 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3640 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3641 sinfo->tx_bytes))
3642 goto nla_put_failure;
3643 if ((sinfo->filled & STATION_INFO_LLID) &&
3644 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3645 goto nla_put_failure;
3646 if ((sinfo->filled & STATION_INFO_PLID) &&
3647 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3648 goto nla_put_failure;
3649 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3650 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3651 sinfo->plink_state))
3652 goto nla_put_failure;
3653 switch (rdev->wiphy.signal_type) {
3654 case CFG80211_SIGNAL_TYPE_MBM:
3655 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3656 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3657 sinfo->signal))
3658 goto nla_put_failure;
3659 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3660 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3661 sinfo->signal_avg))
3662 goto nla_put_failure;
3663 break;
3664 default:
3665 break;
3666 }
3667 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3668 if (!nl80211_put_signal(msg, sinfo->chains,
3669 sinfo->chain_signal,
3670 NL80211_STA_INFO_CHAIN_SIGNAL))
3671 goto nla_put_failure;
3672 }
3673 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3674 if (!nl80211_put_signal(msg, sinfo->chains,
3675 sinfo->chain_signal_avg,
3676 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3677 goto nla_put_failure;
3678 }
3679 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3680 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3681 NL80211_STA_INFO_TX_BITRATE))
3682 goto nla_put_failure;
3683 }
3684 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3685 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3686 NL80211_STA_INFO_RX_BITRATE))
3687 goto nla_put_failure;
3688 }
3689 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3690 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3691 sinfo->rx_packets))
3692 goto nla_put_failure;
3693 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3694 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3695 sinfo->tx_packets))
3696 goto nla_put_failure;
3697 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3698 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3699 sinfo->tx_retries))
3700 goto nla_put_failure;
3701 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3702 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3703 sinfo->tx_failed))
3704 goto nla_put_failure;
3705 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3706 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3707 sinfo->expected_throughput))
3708 goto nla_put_failure;
3709 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3710 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3711 sinfo->beacon_loss_count))
3712 goto nla_put_failure;
3713 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3714 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3715 sinfo->local_pm))
3716 goto nla_put_failure;
3717 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3718 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3719 sinfo->peer_pm))
3720 goto nla_put_failure;
3721 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3722 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3723 sinfo->nonpeer_pm))
3724 goto nla_put_failure;
3725 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3726 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3727 if (!bss_param)
3728 goto nla_put_failure;
3729
3730 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3731 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3732 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3733 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3734 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3735 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3736 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3737 sinfo->bss_param.dtim_period) ||
3738 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3739 sinfo->bss_param.beacon_interval))
3740 goto nla_put_failure;
3741
3742 nla_nest_end(msg, bss_param);
3743 }
3744 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3745 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3746 sizeof(struct nl80211_sta_flag_update),
3747 &sinfo->sta_flags))
3748 goto nla_put_failure;
3749 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3750 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3751 sinfo->t_offset))
3752 goto nla_put_failure;
3753 nla_nest_end(msg, sinfoattr);
3754
3755 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3756 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3757 sinfo->assoc_req_ies))
3758 goto nla_put_failure;
3759
3760 return genlmsg_end(msg, hdr);
3761
3762 nla_put_failure:
3763 genlmsg_cancel(msg, hdr);
3764 return -EMSGSIZE;
3765 }
3766
3767 static int nl80211_dump_station(struct sk_buff *skb,
3768 struct netlink_callback *cb)
3769 {
3770 struct station_info sinfo;
3771 struct cfg80211_registered_device *rdev;
3772 struct wireless_dev *wdev;
3773 u8 mac_addr[ETH_ALEN];
3774 int sta_idx = cb->args[2];
3775 int err;
3776
3777 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3778 if (err)
3779 return err;
3780
3781 if (!wdev->netdev) {
3782 err = -EINVAL;
3783 goto out_err;
3784 }
3785
3786 if (!rdev->ops->dump_station) {
3787 err = -EOPNOTSUPP;
3788 goto out_err;
3789 }
3790
3791 while (1) {
3792 memset(&sinfo, 0, sizeof(sinfo));
3793 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3794 mac_addr, &sinfo);
3795 if (err == -ENOENT)
3796 break;
3797 if (err)
3798 goto out_err;
3799
3800 if (nl80211_send_station(skb,
3801 NETLINK_CB(cb->skb).portid,
3802 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3803 rdev, wdev->netdev, mac_addr,
3804 &sinfo) < 0)
3805 goto out;
3806
3807 sta_idx++;
3808 }
3809
3810
3811 out:
3812 cb->args[2] = sta_idx;
3813 err = skb->len;
3814 out_err:
3815 nl80211_finish_wdev_dump(rdev);
3816
3817 return err;
3818 }
3819
3820 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3821 {
3822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3823 struct net_device *dev = info->user_ptr[1];
3824 struct station_info sinfo;
3825 struct sk_buff *msg;
3826 u8 *mac_addr = NULL;
3827 int err;
3828
3829 memset(&sinfo, 0, sizeof(sinfo));
3830
3831 if (!info->attrs[NL80211_ATTR_MAC])
3832 return -EINVAL;
3833
3834 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3835
3836 if (!rdev->ops->get_station)
3837 return -EOPNOTSUPP;
3838
3839 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3840 if (err)
3841 return err;
3842
3843 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3844 if (!msg)
3845 return -ENOMEM;
3846
3847 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3848 rdev, dev, mac_addr, &sinfo) < 0) {
3849 nlmsg_free(msg);
3850 return -ENOBUFS;
3851 }
3852
3853 return genlmsg_reply(msg, info);
3854 }
3855
3856 int cfg80211_check_station_change(struct wiphy *wiphy,
3857 struct station_parameters *params,
3858 enum cfg80211_station_type statype)
3859 {
3860 if (params->listen_interval != -1)
3861 return -EINVAL;
3862 if (params->aid &&
3863 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3864 return -EINVAL;
3865
3866 /* When you run into this, adjust the code below for the new flag */
3867 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3868
3869 switch (statype) {
3870 case CFG80211_STA_MESH_PEER_KERNEL:
3871 case CFG80211_STA_MESH_PEER_USER:
3872 /*
3873 * No ignoring the TDLS flag here -- the userspace mesh
3874 * code doesn't have the bug of including TDLS in the
3875 * mask everywhere.
3876 */
3877 if (params->sta_flags_mask &
3878 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3879 BIT(NL80211_STA_FLAG_MFP) |
3880 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3881 return -EINVAL;
3882 break;
3883 case CFG80211_STA_TDLS_PEER_SETUP:
3884 case CFG80211_STA_TDLS_PEER_ACTIVE:
3885 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3886 return -EINVAL;
3887 /* ignore since it can't change */
3888 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3889 break;
3890 default:
3891 /* disallow mesh-specific things */
3892 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3893 return -EINVAL;
3894 if (params->local_pm)
3895 return -EINVAL;
3896 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3897 return -EINVAL;
3898 }
3899
3900 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3901 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3902 /* TDLS can't be set, ... */
3903 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3904 return -EINVAL;
3905 /*
3906 * ... but don't bother the driver with it. This works around
3907 * a hostapd/wpa_supplicant issue -- it always includes the
3908 * TLDS_PEER flag in the mask even for AP mode.
3909 */
3910 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3911 }
3912
3913 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3914 /* reject other things that can't change */
3915 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3916 return -EINVAL;
3917 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3918 return -EINVAL;
3919 if (params->supported_rates)
3920 return -EINVAL;
3921 if (params->ext_capab || params->ht_capa || params->vht_capa)
3922 return -EINVAL;
3923 }
3924
3925 if (statype != CFG80211_STA_AP_CLIENT) {
3926 if (params->vlan)
3927 return -EINVAL;
3928 }
3929
3930 switch (statype) {
3931 case CFG80211_STA_AP_MLME_CLIENT:
3932 /* Use this only for authorizing/unauthorizing a station */
3933 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3934 return -EOPNOTSUPP;
3935 break;
3936 case CFG80211_STA_AP_CLIENT:
3937 /* accept only the listed bits */
3938 if (params->sta_flags_mask &
3939 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3940 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3941 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3942 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3943 BIT(NL80211_STA_FLAG_WME) |
3944 BIT(NL80211_STA_FLAG_MFP)))
3945 return -EINVAL;
3946
3947 /* but authenticated/associated only if driver handles it */
3948 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3949 params->sta_flags_mask &
3950 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3951 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3952 return -EINVAL;
3953 break;
3954 case CFG80211_STA_IBSS:
3955 case CFG80211_STA_AP_STA:
3956 /* reject any changes other than AUTHORIZED */
3957 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3958 return -EINVAL;
3959 break;
3960 case CFG80211_STA_TDLS_PEER_SETUP:
3961 /* reject any changes other than AUTHORIZED or WME */
3962 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3963 BIT(NL80211_STA_FLAG_WME)))
3964 return -EINVAL;
3965 /* force (at least) rates when authorizing */
3966 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3967 !params->supported_rates)
3968 return -EINVAL;
3969 break;
3970 case CFG80211_STA_TDLS_PEER_ACTIVE:
3971 /* reject any changes */
3972 return -EINVAL;
3973 case CFG80211_STA_MESH_PEER_KERNEL:
3974 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3975 return -EINVAL;
3976 break;
3977 case CFG80211_STA_MESH_PEER_USER:
3978 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3979 return -EINVAL;
3980 break;
3981 }
3982
3983 return 0;
3984 }
3985 EXPORT_SYMBOL(cfg80211_check_station_change);
3986
3987 /*
3988 * Get vlan interface making sure it is running and on the right wiphy.
3989 */
3990 static struct net_device *get_vlan(struct genl_info *info,
3991 struct cfg80211_registered_device *rdev)
3992 {
3993 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3994 struct net_device *v;
3995 int ret;
3996
3997 if (!vlanattr)
3998 return NULL;
3999
4000 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4001 if (!v)
4002 return ERR_PTR(-ENODEV);
4003
4004 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4005 ret = -EINVAL;
4006 goto error;
4007 }
4008
4009 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4010 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4011 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4012 ret = -EINVAL;
4013 goto error;
4014 }
4015
4016 if (!netif_running(v)) {
4017 ret = -ENETDOWN;
4018 goto error;
4019 }
4020
4021 return v;
4022 error:
4023 dev_put(v);
4024 return ERR_PTR(ret);
4025 }
4026
4027 static const struct nla_policy
4028 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4029 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4030 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4031 };
4032
4033 static int nl80211_parse_sta_wme(struct genl_info *info,
4034 struct station_parameters *params)
4035 {
4036 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4037 struct nlattr *nla;
4038 int err;
4039
4040 /* parse WME attributes if present */
4041 if (!info->attrs[NL80211_ATTR_STA_WME])
4042 return 0;
4043
4044 nla = info->attrs[NL80211_ATTR_STA_WME];
4045 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4046 nl80211_sta_wme_policy);
4047 if (err)
4048 return err;
4049
4050 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4051 params->uapsd_queues = nla_get_u8(
4052 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4053 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4054 return -EINVAL;
4055
4056 if (tb[NL80211_STA_WME_MAX_SP])
4057 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4058
4059 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4060 return -EINVAL;
4061
4062 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4063
4064 return 0;
4065 }
4066
4067 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4068 struct station_parameters *params)
4069 {
4070 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4071 params->supported_channels =
4072 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4073 params->supported_channels_len =
4074 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4075 /*
4076 * Need to include at least one (first channel, number of
4077 * channels) tuple for each subband, and must have proper
4078 * tuples for the rest of the data as well.
4079 */
4080 if (params->supported_channels_len < 2)
4081 return -EINVAL;
4082 if (params->supported_channels_len % 2)
4083 return -EINVAL;
4084 }
4085
4086 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4087 params->supported_oper_classes =
4088 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4089 params->supported_oper_classes_len =
4090 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4091 /*
4092 * The value of the Length field of the Supported Operating
4093 * Classes element is between 2 and 253.
4094 */
4095 if (params->supported_oper_classes_len < 2 ||
4096 params->supported_oper_classes_len > 253)
4097 return -EINVAL;
4098 }
4099 return 0;
4100 }
4101
4102 static int nl80211_set_station_tdls(struct genl_info *info,
4103 struct station_parameters *params)
4104 {
4105 int err;
4106 /* Dummy STA entry gets updated once the peer capabilities are known */
4107 if (info->attrs[NL80211_ATTR_PEER_AID])
4108 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4109 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4110 params->ht_capa =
4111 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4112 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4113 params->vht_capa =
4114 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4115
4116 err = nl80211_parse_sta_channel_info(info, params);
4117 if (err)
4118 return err;
4119
4120 return nl80211_parse_sta_wme(info, params);
4121 }
4122
4123 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4124 {
4125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4126 struct net_device *dev = info->user_ptr[1];
4127 struct station_parameters params;
4128 u8 *mac_addr;
4129 int err;
4130
4131 memset(&params, 0, sizeof(params));
4132
4133 params.listen_interval = -1;
4134
4135 if (!rdev->ops->change_station)
4136 return -EOPNOTSUPP;
4137
4138 if (info->attrs[NL80211_ATTR_STA_AID])
4139 return -EINVAL;
4140
4141 if (!info->attrs[NL80211_ATTR_MAC])
4142 return -EINVAL;
4143
4144 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4145
4146 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4147 params.supported_rates =
4148 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4149 params.supported_rates_len =
4150 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4151 }
4152
4153 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4154 params.capability =
4155 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4156 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4157 }
4158
4159 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4160 params.ext_capab =
4161 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4162 params.ext_capab_len =
4163 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4164 }
4165
4166 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4167 return -EINVAL;
4168
4169 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4170 return -EINVAL;
4171
4172 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4173 params.plink_action =
4174 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4175 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4176 return -EINVAL;
4177 }
4178
4179 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4180 params.plink_state =
4181 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4182 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4183 return -EINVAL;
4184 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4185 }
4186
4187 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4188 enum nl80211_mesh_power_mode pm = nla_get_u32(
4189 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4190
4191 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4192 pm > NL80211_MESH_POWER_MAX)
4193 return -EINVAL;
4194
4195 params.local_pm = pm;
4196 }
4197
4198 /* Include parameters for TDLS peer (will check later) */
4199 err = nl80211_set_station_tdls(info, &params);
4200 if (err)
4201 return err;
4202
4203 params.vlan = get_vlan(info, rdev);
4204 if (IS_ERR(params.vlan))
4205 return PTR_ERR(params.vlan);
4206
4207 switch (dev->ieee80211_ptr->iftype) {
4208 case NL80211_IFTYPE_AP:
4209 case NL80211_IFTYPE_AP_VLAN:
4210 case NL80211_IFTYPE_P2P_GO:
4211 case NL80211_IFTYPE_P2P_CLIENT:
4212 case NL80211_IFTYPE_STATION:
4213 case NL80211_IFTYPE_ADHOC:
4214 case NL80211_IFTYPE_MESH_POINT:
4215 break;
4216 default:
4217 err = -EOPNOTSUPP;
4218 goto out_put_vlan;
4219 }
4220
4221 /* driver will call cfg80211_check_station_change() */
4222 err = rdev_change_station(rdev, dev, mac_addr, &params);
4223
4224 out_put_vlan:
4225 if (params.vlan)
4226 dev_put(params.vlan);
4227
4228 return err;
4229 }
4230
4231 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4232 {
4233 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4234 int err;
4235 struct net_device *dev = info->user_ptr[1];
4236 struct station_parameters params;
4237 u8 *mac_addr = NULL;
4238
4239 memset(&params, 0, sizeof(params));
4240
4241 if (!rdev->ops->add_station)
4242 return -EOPNOTSUPP;
4243
4244 if (!info->attrs[NL80211_ATTR_MAC])
4245 return -EINVAL;
4246
4247 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4248 return -EINVAL;
4249
4250 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4251 return -EINVAL;
4252
4253 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4254 !info->attrs[NL80211_ATTR_PEER_AID])
4255 return -EINVAL;
4256
4257 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4258 params.supported_rates =
4259 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4260 params.supported_rates_len =
4261 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4262 params.listen_interval =
4263 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4264
4265 if (info->attrs[NL80211_ATTR_PEER_AID])
4266 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4267 else
4268 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4269 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4270 return -EINVAL;
4271
4272 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4273 params.capability =
4274 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4275 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4276 }
4277
4278 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4279 params.ext_capab =
4280 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4281 params.ext_capab_len =
4282 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4283 }
4284
4285 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4286 params.ht_capa =
4287 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4288
4289 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4290 params.vht_capa =
4291 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4292
4293 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4294 params.opmode_notif_used = true;
4295 params.opmode_notif =
4296 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4297 }
4298
4299 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4300 params.plink_action =
4301 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4302 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4303 return -EINVAL;
4304 }
4305
4306 err = nl80211_parse_sta_channel_info(info, &params);
4307 if (err)
4308 return err;
4309
4310 err = nl80211_parse_sta_wme(info, &params);
4311 if (err)
4312 return err;
4313
4314 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4315 return -EINVAL;
4316
4317 /* When you run into this, adjust the code below for the new flag */
4318 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4319
4320 switch (dev->ieee80211_ptr->iftype) {
4321 case NL80211_IFTYPE_AP:
4322 case NL80211_IFTYPE_AP_VLAN:
4323 case NL80211_IFTYPE_P2P_GO:
4324 /* ignore WME attributes if iface/sta is not capable */
4325 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4326 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4327 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4328
4329 /* TDLS peers cannot be added */
4330 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4331 info->attrs[NL80211_ATTR_PEER_AID])
4332 return -EINVAL;
4333 /* but don't bother the driver with it */
4334 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4335
4336 /* allow authenticated/associated only if driver handles it */
4337 if (!(rdev->wiphy.features &
4338 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4339 params.sta_flags_mask &
4340 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4341 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4342 return -EINVAL;
4343
4344 /* must be last in here for error handling */
4345 params.vlan = get_vlan(info, rdev);
4346 if (IS_ERR(params.vlan))
4347 return PTR_ERR(params.vlan);
4348 break;
4349 case NL80211_IFTYPE_MESH_POINT:
4350 /* ignore uAPSD data */
4351 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4352
4353 /* associated is disallowed */
4354 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4355 return -EINVAL;
4356 /* TDLS peers cannot be added */
4357 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4358 info->attrs[NL80211_ATTR_PEER_AID])
4359 return -EINVAL;
4360 break;
4361 case NL80211_IFTYPE_STATION:
4362 case NL80211_IFTYPE_P2P_CLIENT:
4363 /* ignore uAPSD data */
4364 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4365
4366 /* these are disallowed */
4367 if (params.sta_flags_mask &
4368 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4369 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4370 return -EINVAL;
4371 /* Only TDLS peers can be added */
4372 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4373 return -EINVAL;
4374 /* Can only add if TDLS ... */
4375 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4376 return -EOPNOTSUPP;
4377 /* ... with external setup is supported */
4378 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4379 return -EOPNOTSUPP;
4380 /*
4381 * Older wpa_supplicant versions always mark the TDLS peer
4382 * as authorized, but it shouldn't yet be.
4383 */
4384 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4385 break;
4386 default:
4387 return -EOPNOTSUPP;
4388 }
4389
4390 /* be aware of params.vlan when changing code here */
4391
4392 err = rdev_add_station(rdev, dev, mac_addr, &params);
4393
4394 if (params.vlan)
4395 dev_put(params.vlan);
4396 return err;
4397 }
4398
4399 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4400 {
4401 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4402 struct net_device *dev = info->user_ptr[1];
4403 struct station_del_parameters params;
4404
4405 memset(&params, 0, sizeof(params));
4406
4407 if (info->attrs[NL80211_ATTR_MAC])
4408 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4409
4410 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4411 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4412 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4413 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4414 return -EINVAL;
4415
4416 if (!rdev->ops->del_station)
4417 return -EOPNOTSUPP;
4418
4419 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4420 params.subtype =
4421 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4422 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4423 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4424 return -EINVAL;
4425 } else {
4426 /* Default to Deauthentication frame */
4427 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4428 }
4429
4430 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4431 params.reason_code =
4432 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4433 if (params.reason_code == 0)
4434 return -EINVAL; /* 0 is reserved */
4435 } else {
4436 /* Default to reason code 2 */
4437 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4438 }
4439
4440 return rdev_del_station(rdev, dev, &params);
4441 }
4442
4443 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4444 int flags, struct net_device *dev,
4445 u8 *dst, u8 *next_hop,
4446 struct mpath_info *pinfo)
4447 {
4448 void *hdr;
4449 struct nlattr *pinfoattr;
4450
4451 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4452 if (!hdr)
4453 return -1;
4454
4455 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4456 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4457 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4458 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4459 goto nla_put_failure;
4460
4461 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4462 if (!pinfoattr)
4463 goto nla_put_failure;
4464 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4465 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4466 pinfo->frame_qlen))
4467 goto nla_put_failure;
4468 if (((pinfo->filled & MPATH_INFO_SN) &&
4469 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4470 ((pinfo->filled & MPATH_INFO_METRIC) &&
4471 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4472 pinfo->metric)) ||
4473 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4474 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4475 pinfo->exptime)) ||
4476 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4477 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4478 pinfo->flags)) ||
4479 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4480 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4481 pinfo->discovery_timeout)) ||
4482 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4483 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4484 pinfo->discovery_retries)))
4485 goto nla_put_failure;
4486
4487 nla_nest_end(msg, pinfoattr);
4488
4489 return genlmsg_end(msg, hdr);
4490
4491 nla_put_failure:
4492 genlmsg_cancel(msg, hdr);
4493 return -EMSGSIZE;
4494 }
4495
4496 static int nl80211_dump_mpath(struct sk_buff *skb,
4497 struct netlink_callback *cb)
4498 {
4499 struct mpath_info pinfo;
4500 struct cfg80211_registered_device *rdev;
4501 struct wireless_dev *wdev;
4502 u8 dst[ETH_ALEN];
4503 u8 next_hop[ETH_ALEN];
4504 int path_idx = cb->args[2];
4505 int err;
4506
4507 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4508 if (err)
4509 return err;
4510
4511 if (!rdev->ops->dump_mpath) {
4512 err = -EOPNOTSUPP;
4513 goto out_err;
4514 }
4515
4516 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4517 err = -EOPNOTSUPP;
4518 goto out_err;
4519 }
4520
4521 while (1) {
4522 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4523 next_hop, &pinfo);
4524 if (err == -ENOENT)
4525 break;
4526 if (err)
4527 goto out_err;
4528
4529 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4530 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4531 wdev->netdev, dst, next_hop,
4532 &pinfo) < 0)
4533 goto out;
4534
4535 path_idx++;
4536 }
4537
4538
4539 out:
4540 cb->args[2] = path_idx;
4541 err = skb->len;
4542 out_err:
4543 nl80211_finish_wdev_dump(rdev);
4544 return err;
4545 }
4546
4547 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4548 {
4549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4550 int err;
4551 struct net_device *dev = info->user_ptr[1];
4552 struct mpath_info pinfo;
4553 struct sk_buff *msg;
4554 u8 *dst = NULL;
4555 u8 next_hop[ETH_ALEN];
4556
4557 memset(&pinfo, 0, sizeof(pinfo));
4558
4559 if (!info->attrs[NL80211_ATTR_MAC])
4560 return -EINVAL;
4561
4562 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4563
4564 if (!rdev->ops->get_mpath)
4565 return -EOPNOTSUPP;
4566
4567 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4568 return -EOPNOTSUPP;
4569
4570 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4571 if (err)
4572 return err;
4573
4574 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4575 if (!msg)
4576 return -ENOMEM;
4577
4578 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4579 dev, dst, next_hop, &pinfo) < 0) {
4580 nlmsg_free(msg);
4581 return -ENOBUFS;
4582 }
4583
4584 return genlmsg_reply(msg, info);
4585 }
4586
4587 static int nl80211_set_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->change_mpath)
4604 return -EOPNOTSUPP;
4605
4606 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4607 return -EOPNOTSUPP;
4608
4609 return rdev_change_mpath(rdev, dev, dst, next_hop);
4610 }
4611
4612 static int nl80211_new_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 u8 *next_hop = NULL;
4618
4619 if (!info->attrs[NL80211_ATTR_MAC])
4620 return -EINVAL;
4621
4622 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4623 return -EINVAL;
4624
4625 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4626 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4627
4628 if (!rdev->ops->add_mpath)
4629 return -EOPNOTSUPP;
4630
4631 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4632 return -EOPNOTSUPP;
4633
4634 return rdev_add_mpath(rdev, dev, dst, next_hop);
4635 }
4636
4637 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4638 {
4639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4640 struct net_device *dev = info->user_ptr[1];
4641 u8 *dst = NULL;
4642
4643 if (info->attrs[NL80211_ATTR_MAC])
4644 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4645
4646 if (!rdev->ops->del_mpath)
4647 return -EOPNOTSUPP;
4648
4649 return rdev_del_mpath(rdev, dev, dst);
4650 }
4651
4652 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4653 {
4654 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4655 int err;
4656 struct net_device *dev = info->user_ptr[1];
4657 struct mpath_info pinfo;
4658 struct sk_buff *msg;
4659 u8 *dst = NULL;
4660 u8 mpp[ETH_ALEN];
4661
4662 memset(&pinfo, 0, sizeof(pinfo));
4663
4664 if (!info->attrs[NL80211_ATTR_MAC])
4665 return -EINVAL;
4666
4667 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4668
4669 if (!rdev->ops->get_mpp)
4670 return -EOPNOTSUPP;
4671
4672 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4673 return -EOPNOTSUPP;
4674
4675 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4676 if (err)
4677 return err;
4678
4679 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4680 if (!msg)
4681 return -ENOMEM;
4682
4683 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4684 dev, dst, mpp, &pinfo) < 0) {
4685 nlmsg_free(msg);
4686 return -ENOBUFS;
4687 }
4688
4689 return genlmsg_reply(msg, info);
4690 }
4691
4692 static int nl80211_dump_mpp(struct sk_buff *skb,
4693 struct netlink_callback *cb)
4694 {
4695 struct mpath_info pinfo;
4696 struct cfg80211_registered_device *rdev;
4697 struct wireless_dev *wdev;
4698 u8 dst[ETH_ALEN];
4699 u8 mpp[ETH_ALEN];
4700 int path_idx = cb->args[2];
4701 int err;
4702
4703 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4704 if (err)
4705 return err;
4706
4707 if (!rdev->ops->dump_mpp) {
4708 err = -EOPNOTSUPP;
4709 goto out_err;
4710 }
4711
4712 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4713 err = -EOPNOTSUPP;
4714 goto out_err;
4715 }
4716
4717 while (1) {
4718 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4719 mpp, &pinfo);
4720 if (err == -ENOENT)
4721 break;
4722 if (err)
4723 goto out_err;
4724
4725 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4726 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4727 wdev->netdev, dst, mpp,
4728 &pinfo) < 0)
4729 goto out;
4730
4731 path_idx++;
4732 }
4733
4734 out:
4735 cb->args[2] = path_idx;
4736 err = skb->len;
4737 out_err:
4738 nl80211_finish_wdev_dump(rdev);
4739 return err;
4740 }
4741
4742 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4743 {
4744 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4745 struct net_device *dev = info->user_ptr[1];
4746 struct wireless_dev *wdev = dev->ieee80211_ptr;
4747 struct bss_parameters params;
4748 int err;
4749
4750 memset(&params, 0, sizeof(params));
4751 /* default to not changing parameters */
4752 params.use_cts_prot = -1;
4753 params.use_short_preamble = -1;
4754 params.use_short_slot_time = -1;
4755 params.ap_isolate = -1;
4756 params.ht_opmode = -1;
4757 params.p2p_ctwindow = -1;
4758 params.p2p_opp_ps = -1;
4759
4760 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4761 params.use_cts_prot =
4762 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4763 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4764 params.use_short_preamble =
4765 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4766 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4767 params.use_short_slot_time =
4768 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4769 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4770 params.basic_rates =
4771 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4772 params.basic_rates_len =
4773 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4774 }
4775 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4776 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4777 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4778 params.ht_opmode =
4779 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4780
4781 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4782 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4783 return -EINVAL;
4784 params.p2p_ctwindow =
4785 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4786 if (params.p2p_ctwindow < 0)
4787 return -EINVAL;
4788 if (params.p2p_ctwindow != 0 &&
4789 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4790 return -EINVAL;
4791 }
4792
4793 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4794 u8 tmp;
4795
4796 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4797 return -EINVAL;
4798 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4799 if (tmp > 1)
4800 return -EINVAL;
4801 params.p2p_opp_ps = tmp;
4802 if (params.p2p_opp_ps &&
4803 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4804 return -EINVAL;
4805 }
4806
4807 if (!rdev->ops->change_bss)
4808 return -EOPNOTSUPP;
4809
4810 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4811 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4812 return -EOPNOTSUPP;
4813
4814 wdev_lock(wdev);
4815 err = rdev_change_bss(rdev, dev, &params);
4816 wdev_unlock(wdev);
4817
4818 return err;
4819 }
4820
4821 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4822 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4823 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4824 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4825 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4826 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4827 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4828 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4829 };
4830
4831 static int parse_reg_rule(struct nlattr *tb[],
4832 struct ieee80211_reg_rule *reg_rule)
4833 {
4834 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4835 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4836
4837 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4838 return -EINVAL;
4839 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4840 return -EINVAL;
4841 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4842 return -EINVAL;
4843 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4844 return -EINVAL;
4845 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4846 return -EINVAL;
4847
4848 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4849
4850 freq_range->start_freq_khz =
4851 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4852 freq_range->end_freq_khz =
4853 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4854 freq_range->max_bandwidth_khz =
4855 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4856
4857 power_rule->max_eirp =
4858 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4859
4860 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4861 power_rule->max_antenna_gain =
4862 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4863
4864 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4865 reg_rule->dfs_cac_ms =
4866 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4867
4868 return 0;
4869 }
4870
4871 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4872 {
4873 char *data = NULL;
4874 enum nl80211_user_reg_hint_type user_reg_hint_type;
4875
4876 /*
4877 * You should only get this when cfg80211 hasn't yet initialized
4878 * completely when built-in to the kernel right between the time
4879 * window between nl80211_init() and regulatory_init(), if that is
4880 * even possible.
4881 */
4882 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4883 return -EINPROGRESS;
4884
4885 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4886 user_reg_hint_type =
4887 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4888 else
4889 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4890
4891 switch (user_reg_hint_type) {
4892 case NL80211_USER_REG_HINT_USER:
4893 case NL80211_USER_REG_HINT_CELL_BASE:
4894 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4895 return -EINVAL;
4896
4897 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4898 return regulatory_hint_user(data, user_reg_hint_type);
4899 case NL80211_USER_REG_HINT_INDOOR:
4900 return regulatory_hint_indoor_user();
4901 default:
4902 return -EINVAL;
4903 }
4904 }
4905
4906 static int nl80211_get_mesh_config(struct sk_buff *skb,
4907 struct genl_info *info)
4908 {
4909 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4910 struct net_device *dev = info->user_ptr[1];
4911 struct wireless_dev *wdev = dev->ieee80211_ptr;
4912 struct mesh_config cur_params;
4913 int err = 0;
4914 void *hdr;
4915 struct nlattr *pinfoattr;
4916 struct sk_buff *msg;
4917
4918 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4919 return -EOPNOTSUPP;
4920
4921 if (!rdev->ops->get_mesh_config)
4922 return -EOPNOTSUPP;
4923
4924 wdev_lock(wdev);
4925 /* If not connected, get default parameters */
4926 if (!wdev->mesh_id_len)
4927 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4928 else
4929 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4930 wdev_unlock(wdev);
4931
4932 if (err)
4933 return err;
4934
4935 /* Draw up a netlink message to send back */
4936 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4937 if (!msg)
4938 return -ENOMEM;
4939 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4940 NL80211_CMD_GET_MESH_CONFIG);
4941 if (!hdr)
4942 goto out;
4943 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4944 if (!pinfoattr)
4945 goto nla_put_failure;
4946 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4947 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4948 cur_params.dot11MeshRetryTimeout) ||
4949 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4950 cur_params.dot11MeshConfirmTimeout) ||
4951 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4952 cur_params.dot11MeshHoldingTimeout) ||
4953 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4954 cur_params.dot11MeshMaxPeerLinks) ||
4955 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4956 cur_params.dot11MeshMaxRetries) ||
4957 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4958 cur_params.dot11MeshTTL) ||
4959 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4960 cur_params.element_ttl) ||
4961 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4962 cur_params.auto_open_plinks) ||
4963 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4964 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4965 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4966 cur_params.dot11MeshHWMPmaxPREQretries) ||
4967 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4968 cur_params.path_refresh_time) ||
4969 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4970 cur_params.min_discovery_timeout) ||
4971 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4972 cur_params.dot11MeshHWMPactivePathTimeout) ||
4973 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4974 cur_params.dot11MeshHWMPpreqMinInterval) ||
4975 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4976 cur_params.dot11MeshHWMPperrMinInterval) ||
4977 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4978 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4979 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4980 cur_params.dot11MeshHWMPRootMode) ||
4981 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4982 cur_params.dot11MeshHWMPRannInterval) ||
4983 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4984 cur_params.dot11MeshGateAnnouncementProtocol) ||
4985 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4986 cur_params.dot11MeshForwarding) ||
4987 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4988 cur_params.rssi_threshold) ||
4989 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4990 cur_params.ht_opmode) ||
4991 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4992 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4993 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4994 cur_params.dot11MeshHWMProotInterval) ||
4995 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4996 cur_params.dot11MeshHWMPconfirmationInterval) ||
4997 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4998 cur_params.power_mode) ||
4999 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5000 cur_params.dot11MeshAwakeWindowDuration) ||
5001 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5002 cur_params.plink_timeout))
5003 goto nla_put_failure;
5004 nla_nest_end(msg, pinfoattr);
5005 genlmsg_end(msg, hdr);
5006 return genlmsg_reply(msg, info);
5007
5008 nla_put_failure:
5009 genlmsg_cancel(msg, hdr);
5010 out:
5011 nlmsg_free(msg);
5012 return -ENOBUFS;
5013 }
5014
5015 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5016 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5017 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5018 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5019 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5020 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5021 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5022 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5023 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5024 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5025 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5026 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5027 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5028 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5029 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5030 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5031 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5032 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5033 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5034 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5035 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5036 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5037 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5038 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5039 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5040 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5041 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5042 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5043 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5044 };
5045
5046 static const struct nla_policy
5047 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5048 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5049 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5050 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5051 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5052 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5053 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5054 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5055 .len = IEEE80211_MAX_DATA_LEN },
5056 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5057 };
5058
5059 static int nl80211_parse_mesh_config(struct genl_info *info,
5060 struct mesh_config *cfg,
5061 u32 *mask_out)
5062 {
5063 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5064 u32 mask = 0;
5065
5066 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5067 do { \
5068 if (tb[attr]) { \
5069 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5070 return -EINVAL; \
5071 cfg->param = fn(tb[attr]); \
5072 mask |= (1 << (attr - 1)); \
5073 } \
5074 } while (0)
5075
5076
5077 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5078 return -EINVAL;
5079 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5080 info->attrs[NL80211_ATTR_MESH_CONFIG],
5081 nl80211_meshconf_params_policy))
5082 return -EINVAL;
5083
5084 /* This makes sure that there aren't more than 32 mesh config
5085 * parameters (otherwise our bitfield scheme would not work.) */
5086 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5087
5088 /* Fill in the params struct */
5089 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5090 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5091 nla_get_u16);
5092 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5093 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5094 nla_get_u16);
5095 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5096 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5097 nla_get_u16);
5098 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5099 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5100 nla_get_u16);
5101 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5102 mask, NL80211_MESHCONF_MAX_RETRIES,
5103 nla_get_u8);
5104 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5105 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5106 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5107 mask, NL80211_MESHCONF_ELEMENT_TTL,
5108 nla_get_u8);
5109 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5110 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5111 nla_get_u8);
5112 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5113 1, 255, mask,
5114 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5115 nla_get_u32);
5116 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5117 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5118 nla_get_u8);
5119 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5120 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5121 nla_get_u32);
5122 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5123 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5124 nla_get_u16);
5125 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5126 1, 65535, mask,
5127 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5128 nla_get_u32);
5129 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5130 1, 65535, mask,
5131 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5132 nla_get_u16);
5133 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5134 1, 65535, mask,
5135 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5136 nla_get_u16);
5137 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5138 dot11MeshHWMPnetDiameterTraversalTime,
5139 1, 65535, mask,
5140 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5141 nla_get_u16);
5142 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5143 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5144 nla_get_u8);
5145 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5146 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5147 nla_get_u16);
5148 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5149 dot11MeshGateAnnouncementProtocol, 0, 1,
5150 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5151 nla_get_u8);
5152 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5153 mask, NL80211_MESHCONF_FORWARDING,
5154 nla_get_u8);
5155 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5156 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5157 nla_get_s32);
5158 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5159 mask, NL80211_MESHCONF_HT_OPMODE,
5160 nla_get_u16);
5161 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5162 1, 65535, mask,
5163 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5164 nla_get_u32);
5165 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5166 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5167 nla_get_u16);
5168 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5169 dot11MeshHWMPconfirmationInterval,
5170 1, 65535, mask,
5171 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5172 nla_get_u16);
5173 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5174 NL80211_MESH_POWER_ACTIVE,
5175 NL80211_MESH_POWER_MAX,
5176 mask, NL80211_MESHCONF_POWER_MODE,
5177 nla_get_u32);
5178 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5179 0, 65535, mask,
5180 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5182 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5183 nla_get_u32);
5184 if (mask_out)
5185 *mask_out = mask;
5186
5187 return 0;
5188
5189 #undef FILL_IN_MESH_PARAM_IF_SET
5190 }
5191
5192 static int nl80211_parse_mesh_setup(struct genl_info *info,
5193 struct mesh_setup *setup)
5194 {
5195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5196 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5197
5198 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5199 return -EINVAL;
5200 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5201 info->attrs[NL80211_ATTR_MESH_SETUP],
5202 nl80211_mesh_setup_params_policy))
5203 return -EINVAL;
5204
5205 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5206 setup->sync_method =
5207 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5208 IEEE80211_SYNC_METHOD_VENDOR :
5209 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5210
5211 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5212 setup->path_sel_proto =
5213 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5214 IEEE80211_PATH_PROTOCOL_VENDOR :
5215 IEEE80211_PATH_PROTOCOL_HWMP;
5216
5217 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5218 setup->path_metric =
5219 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5220 IEEE80211_PATH_METRIC_VENDOR :
5221 IEEE80211_PATH_METRIC_AIRTIME;
5222
5223
5224 if (tb[NL80211_MESH_SETUP_IE]) {
5225 struct nlattr *ieattr =
5226 tb[NL80211_MESH_SETUP_IE];
5227 if (!is_valid_ie_attr(ieattr))
5228 return -EINVAL;
5229 setup->ie = nla_data(ieattr);
5230 setup->ie_len = nla_len(ieattr);
5231 }
5232 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5233 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5234 return -EINVAL;
5235 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5236 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5237 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5238 if (setup->is_secure)
5239 setup->user_mpm = true;
5240
5241 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5242 if (!setup->user_mpm)
5243 return -EINVAL;
5244 setup->auth_id =
5245 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5246 }
5247
5248 return 0;
5249 }
5250
5251 static int nl80211_update_mesh_config(struct sk_buff *skb,
5252 struct genl_info *info)
5253 {
5254 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5255 struct net_device *dev = info->user_ptr[1];
5256 struct wireless_dev *wdev = dev->ieee80211_ptr;
5257 struct mesh_config cfg;
5258 u32 mask;
5259 int err;
5260
5261 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5262 return -EOPNOTSUPP;
5263
5264 if (!rdev->ops->update_mesh_config)
5265 return -EOPNOTSUPP;
5266
5267 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5268 if (err)
5269 return err;
5270
5271 wdev_lock(wdev);
5272 if (!wdev->mesh_id_len)
5273 err = -ENOLINK;
5274
5275 if (!err)
5276 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5277
5278 wdev_unlock(wdev);
5279
5280 return err;
5281 }
5282
5283 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5284 {
5285 const struct ieee80211_regdomain *regdom;
5286 struct sk_buff *msg;
5287 void *hdr = NULL;
5288 struct nlattr *nl_reg_rules;
5289 unsigned int i;
5290
5291 if (!cfg80211_regdomain)
5292 return -EINVAL;
5293
5294 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5295 if (!msg)
5296 return -ENOBUFS;
5297
5298 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5299 NL80211_CMD_GET_REG);
5300 if (!hdr)
5301 goto put_failure;
5302
5303 if (reg_last_request_cell_base() &&
5304 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5305 NL80211_USER_REG_HINT_CELL_BASE))
5306 goto nla_put_failure;
5307
5308 rcu_read_lock();
5309 regdom = rcu_dereference(cfg80211_regdomain);
5310
5311 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5312 (regdom->dfs_region &&
5313 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5314 goto nla_put_failure_rcu;
5315
5316 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5317 if (!nl_reg_rules)
5318 goto nla_put_failure_rcu;
5319
5320 for (i = 0; i < regdom->n_reg_rules; i++) {
5321 struct nlattr *nl_reg_rule;
5322 const struct ieee80211_reg_rule *reg_rule;
5323 const struct ieee80211_freq_range *freq_range;
5324 const struct ieee80211_power_rule *power_rule;
5325 unsigned int max_bandwidth_khz;
5326
5327 reg_rule = &regdom->reg_rules[i];
5328 freq_range = &reg_rule->freq_range;
5329 power_rule = &reg_rule->power_rule;
5330
5331 nl_reg_rule = nla_nest_start(msg, i);
5332 if (!nl_reg_rule)
5333 goto nla_put_failure_rcu;
5334
5335 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5336 if (!max_bandwidth_khz)
5337 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5338 reg_rule);
5339
5340 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5341 reg_rule->flags) ||
5342 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5343 freq_range->start_freq_khz) ||
5344 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5345 freq_range->end_freq_khz) ||
5346 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5347 max_bandwidth_khz) ||
5348 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5349 power_rule->max_antenna_gain) ||
5350 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5351 power_rule->max_eirp) ||
5352 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5353 reg_rule->dfs_cac_ms))
5354 goto nla_put_failure_rcu;
5355
5356 nla_nest_end(msg, nl_reg_rule);
5357 }
5358 rcu_read_unlock();
5359
5360 nla_nest_end(msg, nl_reg_rules);
5361
5362 genlmsg_end(msg, hdr);
5363 return genlmsg_reply(msg, info);
5364
5365 nla_put_failure_rcu:
5366 rcu_read_unlock();
5367 nla_put_failure:
5368 genlmsg_cancel(msg, hdr);
5369 put_failure:
5370 nlmsg_free(msg);
5371 return -EMSGSIZE;
5372 }
5373
5374 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5375 {
5376 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5377 struct nlattr *nl_reg_rule;
5378 char *alpha2 = NULL;
5379 int rem_reg_rules = 0, r = 0;
5380 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5381 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5382 struct ieee80211_regdomain *rd = NULL;
5383
5384 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5385 return -EINVAL;
5386
5387 if (!info->attrs[NL80211_ATTR_REG_RULES])
5388 return -EINVAL;
5389
5390 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5391
5392 if (info->attrs[NL80211_ATTR_DFS_REGION])
5393 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5394
5395 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5396 rem_reg_rules) {
5397 num_rules++;
5398 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5399 return -EINVAL;
5400 }
5401
5402 if (!reg_is_valid_request(alpha2))
5403 return -EINVAL;
5404
5405 size_of_regd = sizeof(struct ieee80211_regdomain) +
5406 num_rules * sizeof(struct ieee80211_reg_rule);
5407
5408 rd = kzalloc(size_of_regd, GFP_KERNEL);
5409 if (!rd)
5410 return -ENOMEM;
5411
5412 rd->n_reg_rules = num_rules;
5413 rd->alpha2[0] = alpha2[0];
5414 rd->alpha2[1] = alpha2[1];
5415
5416 /*
5417 * Disable DFS master mode if the DFS region was
5418 * not supported or known on this kernel.
5419 */
5420 if (reg_supported_dfs_region(dfs_region))
5421 rd->dfs_region = dfs_region;
5422
5423 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5424 rem_reg_rules) {
5425 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5426 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5427 reg_rule_policy);
5428 if (r)
5429 goto bad_reg;
5430 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5431 if (r)
5432 goto bad_reg;
5433
5434 rule_idx++;
5435
5436 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5437 r = -EINVAL;
5438 goto bad_reg;
5439 }
5440 }
5441
5442 r = set_regdom(rd);
5443 /* set_regdom took ownership */
5444 rd = NULL;
5445
5446 bad_reg:
5447 kfree(rd);
5448 return r;
5449 }
5450
5451 static int validate_scan_freqs(struct nlattr *freqs)
5452 {
5453 struct nlattr *attr1, *attr2;
5454 int n_channels = 0, tmp1, tmp2;
5455
5456 nla_for_each_nested(attr1, freqs, tmp1) {
5457 n_channels++;
5458 /*
5459 * Some hardware has a limited channel list for
5460 * scanning, and it is pretty much nonsensical
5461 * to scan for a channel twice, so disallow that
5462 * and don't require drivers to check that the
5463 * channel list they get isn't longer than what
5464 * they can scan, as long as they can scan all
5465 * the channels they registered at once.
5466 */
5467 nla_for_each_nested(attr2, freqs, tmp2)
5468 if (attr1 != attr2 &&
5469 nla_get_u32(attr1) == nla_get_u32(attr2))
5470 return 0;
5471 }
5472
5473 return n_channels;
5474 }
5475
5476 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5477 {
5478 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5479 struct wireless_dev *wdev = info->user_ptr[1];
5480 struct cfg80211_scan_request *request;
5481 struct nlattr *attr;
5482 struct wiphy *wiphy;
5483 int err, tmp, n_ssids = 0, n_channels, i;
5484 size_t ie_len;
5485
5486 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5487 return -EINVAL;
5488
5489 wiphy = &rdev->wiphy;
5490
5491 if (!rdev->ops->scan)
5492 return -EOPNOTSUPP;
5493
5494 if (rdev->scan_req || rdev->scan_msg) {
5495 err = -EBUSY;
5496 goto unlock;
5497 }
5498
5499 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5500 n_channels = validate_scan_freqs(
5501 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5502 if (!n_channels) {
5503 err = -EINVAL;
5504 goto unlock;
5505 }
5506 } else {
5507 n_channels = ieee80211_get_num_supported_channels(wiphy);
5508 }
5509
5510 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5511 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5512 n_ssids++;
5513
5514 if (n_ssids > wiphy->max_scan_ssids) {
5515 err = -EINVAL;
5516 goto unlock;
5517 }
5518
5519 if (info->attrs[NL80211_ATTR_IE])
5520 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5521 else
5522 ie_len = 0;
5523
5524 if (ie_len > wiphy->max_scan_ie_len) {
5525 err = -EINVAL;
5526 goto unlock;
5527 }
5528
5529 request = kzalloc(sizeof(*request)
5530 + sizeof(*request->ssids) * n_ssids
5531 + sizeof(*request->channels) * n_channels
5532 + ie_len, GFP_KERNEL);
5533 if (!request) {
5534 err = -ENOMEM;
5535 goto unlock;
5536 }
5537
5538 if (n_ssids)
5539 request->ssids = (void *)&request->channels[n_channels];
5540 request->n_ssids = n_ssids;
5541 if (ie_len) {
5542 if (request->ssids)
5543 request->ie = (void *)(request->ssids + n_ssids);
5544 else
5545 request->ie = (void *)(request->channels + n_channels);
5546 }
5547
5548 i = 0;
5549 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5550 /* user specified, bail out if channel not found */
5551 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5552 struct ieee80211_channel *chan;
5553
5554 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5555
5556 if (!chan) {
5557 err = -EINVAL;
5558 goto out_free;
5559 }
5560
5561 /* ignore disabled channels */
5562 if (chan->flags & IEEE80211_CHAN_DISABLED)
5563 continue;
5564
5565 request->channels[i] = chan;
5566 i++;
5567 }
5568 } else {
5569 enum ieee80211_band band;
5570
5571 /* all channels */
5572 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5573 int j;
5574 if (!wiphy->bands[band])
5575 continue;
5576 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5577 struct ieee80211_channel *chan;
5578
5579 chan = &wiphy->bands[band]->channels[j];
5580
5581 if (chan->flags & IEEE80211_CHAN_DISABLED)
5582 continue;
5583
5584 request->channels[i] = chan;
5585 i++;
5586 }
5587 }
5588 }
5589
5590 if (!i) {
5591 err = -EINVAL;
5592 goto out_free;
5593 }
5594
5595 request->n_channels = i;
5596
5597 i = 0;
5598 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5599 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5600 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5601 err = -EINVAL;
5602 goto out_free;
5603 }
5604 request->ssids[i].ssid_len = nla_len(attr);
5605 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5606 i++;
5607 }
5608 }
5609
5610 if (info->attrs[NL80211_ATTR_IE]) {
5611 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5612 memcpy((void *)request->ie,
5613 nla_data(info->attrs[NL80211_ATTR_IE]),
5614 request->ie_len);
5615 }
5616
5617 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5618 if (wiphy->bands[i])
5619 request->rates[i] =
5620 (1 << wiphy->bands[i]->n_bitrates) - 1;
5621
5622 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5623 nla_for_each_nested(attr,
5624 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5625 tmp) {
5626 enum ieee80211_band band = nla_type(attr);
5627
5628 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5629 err = -EINVAL;
5630 goto out_free;
5631 }
5632
5633 if (!wiphy->bands[band])
5634 continue;
5635
5636 err = ieee80211_get_ratemask(wiphy->bands[band],
5637 nla_data(attr),
5638 nla_len(attr),
5639 &request->rates[band]);
5640 if (err)
5641 goto out_free;
5642 }
5643 }
5644
5645 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5646 request->flags = nla_get_u32(
5647 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5648 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5649 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5650 err = -EOPNOTSUPP;
5651 goto out_free;
5652 }
5653 }
5654
5655 request->no_cck =
5656 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5657
5658 request->wdev = wdev;
5659 request->wiphy = &rdev->wiphy;
5660 request->scan_start = jiffies;
5661
5662 rdev->scan_req = request;
5663 err = rdev_scan(rdev, request);
5664
5665 if (!err) {
5666 nl80211_send_scan_start(rdev, wdev);
5667 if (wdev->netdev)
5668 dev_hold(wdev->netdev);
5669 } else {
5670 out_free:
5671 rdev->scan_req = NULL;
5672 kfree(request);
5673 }
5674
5675 unlock:
5676 return err;
5677 }
5678
5679 static int nl80211_start_sched_scan(struct sk_buff *skb,
5680 struct genl_info *info)
5681 {
5682 struct cfg80211_sched_scan_request *request;
5683 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5684 struct net_device *dev = info->user_ptr[1];
5685 struct nlattr *attr;
5686 struct wiphy *wiphy;
5687 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5688 u32 interval;
5689 enum ieee80211_band band;
5690 size_t ie_len;
5691 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5692 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5693
5694 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5695 !rdev->ops->sched_scan_start)
5696 return -EOPNOTSUPP;
5697
5698 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5699 return -EINVAL;
5700
5701 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5702 return -EINVAL;
5703
5704 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5705 if (interval == 0)
5706 return -EINVAL;
5707
5708 wiphy = &rdev->wiphy;
5709
5710 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5711 n_channels = validate_scan_freqs(
5712 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5713 if (!n_channels)
5714 return -EINVAL;
5715 } else {
5716 n_channels = ieee80211_get_num_supported_channels(wiphy);
5717 }
5718
5719 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5720 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5721 tmp)
5722 n_ssids++;
5723
5724 if (n_ssids > wiphy->max_sched_scan_ssids)
5725 return -EINVAL;
5726
5727 /*
5728 * First, count the number of 'real' matchsets. Due to an issue with
5729 * the old implementation, matchsets containing only the RSSI attribute
5730 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5731 * RSSI for all matchsets, rather than their own matchset for reporting
5732 * all APs with a strong RSSI. This is needed to be compatible with
5733 * older userspace that treated a matchset with only the RSSI as the
5734 * global RSSI for all other matchsets - if there are other matchsets.
5735 */
5736 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5737 nla_for_each_nested(attr,
5738 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5739 tmp) {
5740 struct nlattr *rssi;
5741
5742 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5743 nla_data(attr), nla_len(attr),
5744 nl80211_match_policy);
5745 if (err)
5746 return err;
5747 /* add other standalone attributes here */
5748 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5749 n_match_sets++;
5750 continue;
5751 }
5752 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5753 if (rssi)
5754 default_match_rssi = nla_get_s32(rssi);
5755 }
5756 }
5757
5758 /* However, if there's no other matchset, add the RSSI one */
5759 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5760 n_match_sets = 1;
5761
5762 if (n_match_sets > wiphy->max_match_sets)
5763 return -EINVAL;
5764
5765 if (info->attrs[NL80211_ATTR_IE])
5766 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5767 else
5768 ie_len = 0;
5769
5770 if (ie_len > wiphy->max_sched_scan_ie_len)
5771 return -EINVAL;
5772
5773 if (rdev->sched_scan_req) {
5774 err = -EINPROGRESS;
5775 goto out;
5776 }
5777
5778 request = kzalloc(sizeof(*request)
5779 + sizeof(*request->ssids) * n_ssids
5780 + sizeof(*request->match_sets) * n_match_sets
5781 + sizeof(*request->channels) * n_channels
5782 + ie_len, GFP_KERNEL);
5783 if (!request) {
5784 err = -ENOMEM;
5785 goto out;
5786 }
5787
5788 if (n_ssids)
5789 request->ssids = (void *)&request->channels[n_channels];
5790 request->n_ssids = n_ssids;
5791 if (ie_len) {
5792 if (request->ssids)
5793 request->ie = (void *)(request->ssids + n_ssids);
5794 else
5795 request->ie = (void *)(request->channels + n_channels);
5796 }
5797
5798 if (n_match_sets) {
5799 if (request->ie)
5800 request->match_sets = (void *)(request->ie + ie_len);
5801 else if (request->ssids)
5802 request->match_sets =
5803 (void *)(request->ssids + n_ssids);
5804 else
5805 request->match_sets =
5806 (void *)(request->channels + n_channels);
5807 }
5808 request->n_match_sets = n_match_sets;
5809
5810 i = 0;
5811 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5812 /* user specified, bail out if channel not found */
5813 nla_for_each_nested(attr,
5814 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5815 tmp) {
5816 struct ieee80211_channel *chan;
5817
5818 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5819
5820 if (!chan) {
5821 err = -EINVAL;
5822 goto out_free;
5823 }
5824
5825 /* ignore disabled channels */
5826 if (chan->flags & IEEE80211_CHAN_DISABLED)
5827 continue;
5828
5829 request->channels[i] = chan;
5830 i++;
5831 }
5832 } else {
5833 /* all channels */
5834 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5835 int j;
5836 if (!wiphy->bands[band])
5837 continue;
5838 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5839 struct ieee80211_channel *chan;
5840
5841 chan = &wiphy->bands[band]->channels[j];
5842
5843 if (chan->flags & IEEE80211_CHAN_DISABLED)
5844 continue;
5845
5846 request->channels[i] = chan;
5847 i++;
5848 }
5849 }
5850 }
5851
5852 if (!i) {
5853 err = -EINVAL;
5854 goto out_free;
5855 }
5856
5857 request->n_channels = i;
5858
5859 i = 0;
5860 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5861 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5862 tmp) {
5863 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5864 err = -EINVAL;
5865 goto out_free;
5866 }
5867 request->ssids[i].ssid_len = nla_len(attr);
5868 memcpy(request->ssids[i].ssid, nla_data(attr),
5869 nla_len(attr));
5870 i++;
5871 }
5872 }
5873
5874 i = 0;
5875 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5876 nla_for_each_nested(attr,
5877 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5878 tmp) {
5879 struct nlattr *ssid, *rssi;
5880
5881 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5882 nla_data(attr), nla_len(attr),
5883 nl80211_match_policy);
5884 if (err)
5885 goto out_free;
5886 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5887 if (ssid) {
5888 if (WARN_ON(i >= n_match_sets)) {
5889 /* this indicates a programming error,
5890 * the loop above should have verified
5891 * things properly
5892 */
5893 err = -EINVAL;
5894 goto out_free;
5895 }
5896
5897 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5898 err = -EINVAL;
5899 goto out_free;
5900 }
5901 memcpy(request->match_sets[i].ssid.ssid,
5902 nla_data(ssid), nla_len(ssid));
5903 request->match_sets[i].ssid.ssid_len =
5904 nla_len(ssid);
5905 /* special attribute - old implemenation w/a */
5906 request->match_sets[i].rssi_thold =
5907 default_match_rssi;
5908 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5909 if (rssi)
5910 request->match_sets[i].rssi_thold =
5911 nla_get_s32(rssi);
5912 }
5913 i++;
5914 }
5915
5916 /* there was no other matchset, so the RSSI one is alone */
5917 if (i == 0)
5918 request->match_sets[0].rssi_thold = default_match_rssi;
5919
5920 request->min_rssi_thold = INT_MAX;
5921 for (i = 0; i < n_match_sets; i++)
5922 request->min_rssi_thold =
5923 min(request->match_sets[i].rssi_thold,
5924 request->min_rssi_thold);
5925 } else {
5926 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5927 }
5928
5929 if (ie_len) {
5930 request->ie_len = ie_len;
5931 memcpy((void *)request->ie,
5932 nla_data(info->attrs[NL80211_ATTR_IE]),
5933 request->ie_len);
5934 }
5935
5936 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5937 request->flags = nla_get_u32(
5938 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5939 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5940 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5941 err = -EOPNOTSUPP;
5942 goto out_free;
5943 }
5944 }
5945
5946 request->dev = dev;
5947 request->wiphy = &rdev->wiphy;
5948 request->interval = interval;
5949 request->scan_start = jiffies;
5950
5951 err = rdev_sched_scan_start(rdev, dev, request);
5952 if (!err) {
5953 rdev->sched_scan_req = request;
5954 nl80211_send_sched_scan(rdev, dev,
5955 NL80211_CMD_START_SCHED_SCAN);
5956 goto out;
5957 }
5958
5959 out_free:
5960 kfree(request);
5961 out:
5962 return err;
5963 }
5964
5965 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5966 struct genl_info *info)
5967 {
5968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5969
5970 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5971 !rdev->ops->sched_scan_stop)
5972 return -EOPNOTSUPP;
5973
5974 return __cfg80211_stop_sched_scan(rdev, false);
5975 }
5976
5977 static int nl80211_start_radar_detection(struct sk_buff *skb,
5978 struct genl_info *info)
5979 {
5980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5981 struct net_device *dev = info->user_ptr[1];
5982 struct wireless_dev *wdev = dev->ieee80211_ptr;
5983 struct cfg80211_chan_def chandef;
5984 enum nl80211_dfs_regions dfs_region;
5985 unsigned int cac_time_ms;
5986 int err;
5987
5988 dfs_region = reg_get_dfs_region(wdev->wiphy);
5989 if (dfs_region == NL80211_DFS_UNSET)
5990 return -EINVAL;
5991
5992 err = nl80211_parse_chandef(rdev, info, &chandef);
5993 if (err)
5994 return err;
5995
5996 if (netif_carrier_ok(dev))
5997 return -EBUSY;
5998
5999 if (wdev->cac_started)
6000 return -EBUSY;
6001
6002 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6003 wdev->iftype);
6004 if (err < 0)
6005 return err;
6006
6007 if (err == 0)
6008 return -EINVAL;
6009
6010 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6011 return -EINVAL;
6012
6013 if (!rdev->ops->start_radar_detection)
6014 return -EOPNOTSUPP;
6015
6016 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6017 if (WARN_ON(!cac_time_ms))
6018 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6019
6020 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6021 cac_time_ms);
6022 if (!err) {
6023 wdev->chandef = chandef;
6024 wdev->cac_started = true;
6025 wdev->cac_start_time = jiffies;
6026 wdev->cac_time_ms = cac_time_ms;
6027 }
6028 return err;
6029 }
6030
6031 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6032 {
6033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6034 struct net_device *dev = info->user_ptr[1];
6035 struct wireless_dev *wdev = dev->ieee80211_ptr;
6036 struct cfg80211_csa_settings params;
6037 /* csa_attrs is defined static to avoid waste of stack size - this
6038 * function is called under RTNL lock, so this should not be a problem.
6039 */
6040 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6041 int err;
6042 bool need_new_beacon = false;
6043 int len, i;
6044 u32 cs_count;
6045
6046 if (!rdev->ops->channel_switch ||
6047 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6048 return -EOPNOTSUPP;
6049
6050 switch (dev->ieee80211_ptr->iftype) {
6051 case NL80211_IFTYPE_AP:
6052 case NL80211_IFTYPE_P2P_GO:
6053 need_new_beacon = true;
6054
6055 /* useless if AP is not running */
6056 if (!wdev->beacon_interval)
6057 return -ENOTCONN;
6058 break;
6059 case NL80211_IFTYPE_ADHOC:
6060 if (!wdev->ssid_len)
6061 return -ENOTCONN;
6062 break;
6063 case NL80211_IFTYPE_MESH_POINT:
6064 if (!wdev->mesh_id_len)
6065 return -ENOTCONN;
6066 break;
6067 default:
6068 return -EOPNOTSUPP;
6069 }
6070
6071 memset(&params, 0, sizeof(params));
6072
6073 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6074 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6075 return -EINVAL;
6076
6077 /* only important for AP, IBSS and mesh create IEs internally */
6078 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6079 return -EINVAL;
6080
6081 /* Even though the attribute is u32, the specification says
6082 * u8, so let's make sure we don't overflow.
6083 */
6084 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6085 if (cs_count > 255)
6086 return -EINVAL;
6087
6088 params.count = cs_count;
6089
6090 if (!need_new_beacon)
6091 goto skip_beacons;
6092
6093 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6094 if (err)
6095 return err;
6096
6097 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6098 info->attrs[NL80211_ATTR_CSA_IES],
6099 nl80211_policy);
6100 if (err)
6101 return err;
6102
6103 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6104 if (err)
6105 return err;
6106
6107 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6108 return -EINVAL;
6109
6110 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6111 if (!len || (len % sizeof(u16)))
6112 return -EINVAL;
6113
6114 params.n_counter_offsets_beacon = len / sizeof(u16);
6115 if (rdev->wiphy.max_num_csa_counters &&
6116 (params.n_counter_offsets_beacon >
6117 rdev->wiphy.max_num_csa_counters))
6118 return -EINVAL;
6119
6120 params.counter_offsets_beacon =
6121 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6122
6123 /* sanity checks - counters should fit and be the same */
6124 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6125 u16 offset = params.counter_offsets_beacon[i];
6126
6127 if (offset >= params.beacon_csa.tail_len)
6128 return -EINVAL;
6129
6130 if (params.beacon_csa.tail[offset] != params.count)
6131 return -EINVAL;
6132 }
6133
6134 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6135 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6136 if (!len || (len % sizeof(u16)))
6137 return -EINVAL;
6138
6139 params.n_counter_offsets_presp = len / sizeof(u16);
6140 if (rdev->wiphy.max_num_csa_counters &&
6141 (params.n_counter_offsets_beacon >
6142 rdev->wiphy.max_num_csa_counters))
6143 return -EINVAL;
6144
6145 params.counter_offsets_presp =
6146 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6147
6148 /* sanity checks - counters should fit and be the same */
6149 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6150 u16 offset = params.counter_offsets_presp[i];
6151
6152 if (offset >= params.beacon_csa.probe_resp_len)
6153 return -EINVAL;
6154
6155 if (params.beacon_csa.probe_resp[offset] !=
6156 params.count)
6157 return -EINVAL;
6158 }
6159 }
6160
6161 skip_beacons:
6162 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6163 if (err)
6164 return err;
6165
6166 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6167 wdev->iftype))
6168 return -EINVAL;
6169
6170 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6171 &params.chandef,
6172 wdev->iftype);
6173 if (err < 0)
6174 return err;
6175
6176 if (err > 0)
6177 params.radar_required = true;
6178
6179 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6180 params.block_tx = true;
6181
6182 wdev_lock(wdev);
6183 err = rdev_channel_switch(rdev, dev, &params);
6184 wdev_unlock(wdev);
6185
6186 return err;
6187 }
6188
6189 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6190 u32 seq, int flags,
6191 struct cfg80211_registered_device *rdev,
6192 struct wireless_dev *wdev,
6193 struct cfg80211_internal_bss *intbss)
6194 {
6195 struct cfg80211_bss *res = &intbss->pub;
6196 const struct cfg80211_bss_ies *ies;
6197 void *hdr;
6198 struct nlattr *bss;
6199
6200 ASSERT_WDEV_LOCK(wdev);
6201
6202 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6203 NL80211_CMD_NEW_SCAN_RESULTS);
6204 if (!hdr)
6205 return -1;
6206
6207 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6208
6209 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6210 goto nla_put_failure;
6211 if (wdev->netdev &&
6212 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6213 goto nla_put_failure;
6214 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6215 goto nla_put_failure;
6216
6217 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6218 if (!bss)
6219 goto nla_put_failure;
6220 if ((!is_zero_ether_addr(res->bssid) &&
6221 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6222 goto nla_put_failure;
6223
6224 rcu_read_lock();
6225 /* indicate whether we have probe response data or not */
6226 if (rcu_access_pointer(res->proberesp_ies) &&
6227 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6228 goto fail_unlock_rcu;
6229
6230 /* this pointer prefers to be pointed to probe response data
6231 * but is always valid
6232 */
6233 ies = rcu_dereference(res->ies);
6234 if (ies) {
6235 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6236 goto fail_unlock_rcu;
6237 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6238 ies->len, ies->data))
6239 goto fail_unlock_rcu;
6240 }
6241
6242 /* and this pointer is always (unless driver didn't know) beacon data */
6243 ies = rcu_dereference(res->beacon_ies);
6244 if (ies && ies->from_beacon) {
6245 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6246 goto fail_unlock_rcu;
6247 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6248 ies->len, ies->data))
6249 goto fail_unlock_rcu;
6250 }
6251 rcu_read_unlock();
6252
6253 if (res->beacon_interval &&
6254 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6255 goto nla_put_failure;
6256 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6257 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6258 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6259 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6260 jiffies_to_msecs(jiffies - intbss->ts)))
6261 goto nla_put_failure;
6262
6263 switch (rdev->wiphy.signal_type) {
6264 case CFG80211_SIGNAL_TYPE_MBM:
6265 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6266 goto nla_put_failure;
6267 break;
6268 case CFG80211_SIGNAL_TYPE_UNSPEC:
6269 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6270 goto nla_put_failure;
6271 break;
6272 default:
6273 break;
6274 }
6275
6276 switch (wdev->iftype) {
6277 case NL80211_IFTYPE_P2P_CLIENT:
6278 case NL80211_IFTYPE_STATION:
6279 if (intbss == wdev->current_bss &&
6280 nla_put_u32(msg, NL80211_BSS_STATUS,
6281 NL80211_BSS_STATUS_ASSOCIATED))
6282 goto nla_put_failure;
6283 break;
6284 case NL80211_IFTYPE_ADHOC:
6285 if (intbss == wdev->current_bss &&
6286 nla_put_u32(msg, NL80211_BSS_STATUS,
6287 NL80211_BSS_STATUS_IBSS_JOINED))
6288 goto nla_put_failure;
6289 break;
6290 default:
6291 break;
6292 }
6293
6294 nla_nest_end(msg, bss);
6295
6296 return genlmsg_end(msg, hdr);
6297
6298 fail_unlock_rcu:
6299 rcu_read_unlock();
6300 nla_put_failure:
6301 genlmsg_cancel(msg, hdr);
6302 return -EMSGSIZE;
6303 }
6304
6305 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6306 {
6307 struct cfg80211_registered_device *rdev;
6308 struct cfg80211_internal_bss *scan;
6309 struct wireless_dev *wdev;
6310 int start = cb->args[2], idx = 0;
6311 int err;
6312
6313 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6314 if (err)
6315 return err;
6316
6317 wdev_lock(wdev);
6318 spin_lock_bh(&rdev->bss_lock);
6319 cfg80211_bss_expire(rdev);
6320
6321 cb->seq = rdev->bss_generation;
6322
6323 list_for_each_entry(scan, &rdev->bss_list, list) {
6324 if (++idx <= start)
6325 continue;
6326 if (nl80211_send_bss(skb, cb,
6327 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6328 rdev, wdev, scan) < 0) {
6329 idx--;
6330 break;
6331 }
6332 }
6333
6334 spin_unlock_bh(&rdev->bss_lock);
6335 wdev_unlock(wdev);
6336
6337 cb->args[2] = idx;
6338 nl80211_finish_wdev_dump(rdev);
6339
6340 return skb->len;
6341 }
6342
6343 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6344 int flags, struct net_device *dev,
6345 struct survey_info *survey)
6346 {
6347 void *hdr;
6348 struct nlattr *infoattr;
6349
6350 hdr = nl80211hdr_put(msg, portid, seq, flags,
6351 NL80211_CMD_NEW_SURVEY_RESULTS);
6352 if (!hdr)
6353 return -ENOMEM;
6354
6355 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6356 goto nla_put_failure;
6357
6358 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6359 if (!infoattr)
6360 goto nla_put_failure;
6361
6362 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6363 survey->channel->center_freq))
6364 goto nla_put_failure;
6365
6366 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6367 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6368 goto nla_put_failure;
6369 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6370 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6371 goto nla_put_failure;
6372 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6373 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6374 survey->channel_time))
6375 goto nla_put_failure;
6376 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6377 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6378 survey->channel_time_busy))
6379 goto nla_put_failure;
6380 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6381 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6382 survey->channel_time_ext_busy))
6383 goto nla_put_failure;
6384 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6385 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6386 survey->channel_time_rx))
6387 goto nla_put_failure;
6388 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6389 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6390 survey->channel_time_tx))
6391 goto nla_put_failure;
6392
6393 nla_nest_end(msg, infoattr);
6394
6395 return genlmsg_end(msg, hdr);
6396
6397 nla_put_failure:
6398 genlmsg_cancel(msg, hdr);
6399 return -EMSGSIZE;
6400 }
6401
6402 static int nl80211_dump_survey(struct sk_buff *skb,
6403 struct netlink_callback *cb)
6404 {
6405 struct survey_info survey;
6406 struct cfg80211_registered_device *rdev;
6407 struct wireless_dev *wdev;
6408 int survey_idx = cb->args[2];
6409 int res;
6410
6411 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6412 if (res)
6413 return res;
6414
6415 if (!wdev->netdev) {
6416 res = -EINVAL;
6417 goto out_err;
6418 }
6419
6420 if (!rdev->ops->dump_survey) {
6421 res = -EOPNOTSUPP;
6422 goto out_err;
6423 }
6424
6425 while (1) {
6426 struct ieee80211_channel *chan;
6427
6428 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6429 if (res == -ENOENT)
6430 break;
6431 if (res)
6432 goto out_err;
6433
6434 /* Survey without a channel doesn't make sense */
6435 if (!survey.channel) {
6436 res = -EINVAL;
6437 goto out;
6438 }
6439
6440 chan = ieee80211_get_channel(&rdev->wiphy,
6441 survey.channel->center_freq);
6442 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6443 survey_idx++;
6444 continue;
6445 }
6446
6447 if (nl80211_send_survey(skb,
6448 NETLINK_CB(cb->skb).portid,
6449 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6450 wdev->netdev, &survey) < 0)
6451 goto out;
6452 survey_idx++;
6453 }
6454
6455 out:
6456 cb->args[2] = survey_idx;
6457 res = skb->len;
6458 out_err:
6459 nl80211_finish_wdev_dump(rdev);
6460 return res;
6461 }
6462
6463 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6464 {
6465 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6466 NL80211_WPA_VERSION_2));
6467 }
6468
6469 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6470 {
6471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6472 struct net_device *dev = info->user_ptr[1];
6473 struct ieee80211_channel *chan;
6474 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6475 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6476 enum nl80211_auth_type auth_type;
6477 struct key_parse key;
6478 bool local_state_change;
6479
6480 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6481 return -EINVAL;
6482
6483 if (!info->attrs[NL80211_ATTR_MAC])
6484 return -EINVAL;
6485
6486 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6487 return -EINVAL;
6488
6489 if (!info->attrs[NL80211_ATTR_SSID])
6490 return -EINVAL;
6491
6492 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6493 return -EINVAL;
6494
6495 err = nl80211_parse_key(info, &key);
6496 if (err)
6497 return err;
6498
6499 if (key.idx >= 0) {
6500 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6501 return -EINVAL;
6502 if (!key.p.key || !key.p.key_len)
6503 return -EINVAL;
6504 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6505 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6506 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6507 key.p.key_len != WLAN_KEY_LEN_WEP104))
6508 return -EINVAL;
6509 if (key.idx > 4)
6510 return -EINVAL;
6511 } else {
6512 key.p.key_len = 0;
6513 key.p.key = NULL;
6514 }
6515
6516 if (key.idx >= 0) {
6517 int i;
6518 bool ok = false;
6519 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6520 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6521 ok = true;
6522 break;
6523 }
6524 }
6525 if (!ok)
6526 return -EINVAL;
6527 }
6528
6529 if (!rdev->ops->auth)
6530 return -EOPNOTSUPP;
6531
6532 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6533 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6534 return -EOPNOTSUPP;
6535
6536 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6537 chan = nl80211_get_valid_chan(&rdev->wiphy,
6538 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6539 if (!chan)
6540 return -EINVAL;
6541
6542 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6543 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6544
6545 if (info->attrs[NL80211_ATTR_IE]) {
6546 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6547 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6548 }
6549
6550 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6551 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6552 return -EINVAL;
6553
6554 if (auth_type == NL80211_AUTHTYPE_SAE &&
6555 !info->attrs[NL80211_ATTR_SAE_DATA])
6556 return -EINVAL;
6557
6558 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6559 if (auth_type != NL80211_AUTHTYPE_SAE)
6560 return -EINVAL;
6561 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6562 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6563 /* need to include at least Auth Transaction and Status Code */
6564 if (sae_data_len < 4)
6565 return -EINVAL;
6566 }
6567
6568 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6569
6570 /*
6571 * Since we no longer track auth state, ignore
6572 * requests to only change local state.
6573 */
6574 if (local_state_change)
6575 return 0;
6576
6577 wdev_lock(dev->ieee80211_ptr);
6578 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6579 ssid, ssid_len, ie, ie_len,
6580 key.p.key, key.p.key_len, key.idx,
6581 sae_data, sae_data_len);
6582 wdev_unlock(dev->ieee80211_ptr);
6583 return err;
6584 }
6585
6586 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6587 struct genl_info *info,
6588 struct cfg80211_crypto_settings *settings,
6589 int cipher_limit)
6590 {
6591 memset(settings, 0, sizeof(*settings));
6592
6593 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6594
6595 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6596 u16 proto;
6597 proto = nla_get_u16(
6598 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6599 settings->control_port_ethertype = cpu_to_be16(proto);
6600 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6601 proto != ETH_P_PAE)
6602 return -EINVAL;
6603 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6604 settings->control_port_no_encrypt = true;
6605 } else
6606 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6607
6608 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6609 void *data;
6610 int len, i;
6611
6612 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6613 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6614 settings->n_ciphers_pairwise = len / sizeof(u32);
6615
6616 if (len % sizeof(u32))
6617 return -EINVAL;
6618
6619 if (settings->n_ciphers_pairwise > cipher_limit)
6620 return -EINVAL;
6621
6622 memcpy(settings->ciphers_pairwise, data, len);
6623
6624 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6625 if (!cfg80211_supported_cipher_suite(
6626 &rdev->wiphy,
6627 settings->ciphers_pairwise[i]))
6628 return -EINVAL;
6629 }
6630
6631 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6632 settings->cipher_group =
6633 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6634 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6635 settings->cipher_group))
6636 return -EINVAL;
6637 }
6638
6639 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6640 settings->wpa_versions =
6641 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6642 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6643 return -EINVAL;
6644 }
6645
6646 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6647 void *data;
6648 int len;
6649
6650 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6651 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6652 settings->n_akm_suites = len / sizeof(u32);
6653
6654 if (len % sizeof(u32))
6655 return -EINVAL;
6656
6657 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6658 return -EINVAL;
6659
6660 memcpy(settings->akm_suites, data, len);
6661 }
6662
6663 return 0;
6664 }
6665
6666 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6667 {
6668 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6669 struct net_device *dev = info->user_ptr[1];
6670 struct ieee80211_channel *chan;
6671 struct cfg80211_assoc_request req = {};
6672 const u8 *bssid, *ssid;
6673 int err, ssid_len = 0;
6674
6675 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6676 return -EINVAL;
6677
6678 if (!info->attrs[NL80211_ATTR_MAC] ||
6679 !info->attrs[NL80211_ATTR_SSID] ||
6680 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6681 return -EINVAL;
6682
6683 if (!rdev->ops->assoc)
6684 return -EOPNOTSUPP;
6685
6686 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6687 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6688 return -EOPNOTSUPP;
6689
6690 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6691
6692 chan = nl80211_get_valid_chan(&rdev->wiphy,
6693 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6694 if (!chan)
6695 return -EINVAL;
6696
6697 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6698 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6699
6700 if (info->attrs[NL80211_ATTR_IE]) {
6701 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6702 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6703 }
6704
6705 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6706 enum nl80211_mfp mfp =
6707 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6708 if (mfp == NL80211_MFP_REQUIRED)
6709 req.use_mfp = true;
6710 else if (mfp != NL80211_MFP_NO)
6711 return -EINVAL;
6712 }
6713
6714 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6715 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6716
6717 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6718 req.flags |= ASSOC_REQ_DISABLE_HT;
6719
6720 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6721 memcpy(&req.ht_capa_mask,
6722 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6723 sizeof(req.ht_capa_mask));
6724
6725 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6726 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6727 return -EINVAL;
6728 memcpy(&req.ht_capa,
6729 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6730 sizeof(req.ht_capa));
6731 }
6732
6733 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6734 req.flags |= ASSOC_REQ_DISABLE_VHT;
6735
6736 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6737 memcpy(&req.vht_capa_mask,
6738 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6739 sizeof(req.vht_capa_mask));
6740
6741 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6742 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6743 return -EINVAL;
6744 memcpy(&req.vht_capa,
6745 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6746 sizeof(req.vht_capa));
6747 }
6748
6749 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6750 if (!(rdev->wiphy.features &
6751 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6752 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6753 return -EINVAL;
6754 req.flags |= ASSOC_REQ_USE_RRM;
6755 }
6756
6757 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6758 if (!err) {
6759 wdev_lock(dev->ieee80211_ptr);
6760 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6761 ssid, ssid_len, &req);
6762 wdev_unlock(dev->ieee80211_ptr);
6763 }
6764
6765 return err;
6766 }
6767
6768 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6769 {
6770 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6771 struct net_device *dev = info->user_ptr[1];
6772 const u8 *ie = NULL, *bssid;
6773 int ie_len = 0, err;
6774 u16 reason_code;
6775 bool local_state_change;
6776
6777 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6778 return -EINVAL;
6779
6780 if (!info->attrs[NL80211_ATTR_MAC])
6781 return -EINVAL;
6782
6783 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6784 return -EINVAL;
6785
6786 if (!rdev->ops->deauth)
6787 return -EOPNOTSUPP;
6788
6789 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6790 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6791 return -EOPNOTSUPP;
6792
6793 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6794
6795 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6796 if (reason_code == 0) {
6797 /* Reason Code 0 is reserved */
6798 return -EINVAL;
6799 }
6800
6801 if (info->attrs[NL80211_ATTR_IE]) {
6802 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6803 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6804 }
6805
6806 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6807
6808 wdev_lock(dev->ieee80211_ptr);
6809 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6810 local_state_change);
6811 wdev_unlock(dev->ieee80211_ptr);
6812 return err;
6813 }
6814
6815 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6816 {
6817 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6818 struct net_device *dev = info->user_ptr[1];
6819 const u8 *ie = NULL, *bssid;
6820 int ie_len = 0, err;
6821 u16 reason_code;
6822 bool local_state_change;
6823
6824 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6825 return -EINVAL;
6826
6827 if (!info->attrs[NL80211_ATTR_MAC])
6828 return -EINVAL;
6829
6830 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6831 return -EINVAL;
6832
6833 if (!rdev->ops->disassoc)
6834 return -EOPNOTSUPP;
6835
6836 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6837 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6838 return -EOPNOTSUPP;
6839
6840 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6841
6842 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6843 if (reason_code == 0) {
6844 /* Reason Code 0 is reserved */
6845 return -EINVAL;
6846 }
6847
6848 if (info->attrs[NL80211_ATTR_IE]) {
6849 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6850 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6851 }
6852
6853 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6854
6855 wdev_lock(dev->ieee80211_ptr);
6856 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6857 local_state_change);
6858 wdev_unlock(dev->ieee80211_ptr);
6859 return err;
6860 }
6861
6862 static bool
6863 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6864 int mcast_rate[IEEE80211_NUM_BANDS],
6865 int rateval)
6866 {
6867 struct wiphy *wiphy = &rdev->wiphy;
6868 bool found = false;
6869 int band, i;
6870
6871 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6872 struct ieee80211_supported_band *sband;
6873
6874 sband = wiphy->bands[band];
6875 if (!sband)
6876 continue;
6877
6878 for (i = 0; i < sband->n_bitrates; i++) {
6879 if (sband->bitrates[i].bitrate == rateval) {
6880 mcast_rate[band] = i + 1;
6881 found = true;
6882 break;
6883 }
6884 }
6885 }
6886
6887 return found;
6888 }
6889
6890 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6891 {
6892 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6893 struct net_device *dev = info->user_ptr[1];
6894 struct cfg80211_ibss_params ibss;
6895 struct wiphy *wiphy;
6896 struct cfg80211_cached_keys *connkeys = NULL;
6897 int err;
6898
6899 memset(&ibss, 0, sizeof(ibss));
6900
6901 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6902 return -EINVAL;
6903
6904 if (!info->attrs[NL80211_ATTR_SSID] ||
6905 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6906 return -EINVAL;
6907
6908 ibss.beacon_interval = 100;
6909
6910 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6911 ibss.beacon_interval =
6912 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6913 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6914 return -EINVAL;
6915 }
6916
6917 if (!rdev->ops->join_ibss)
6918 return -EOPNOTSUPP;
6919
6920 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6921 return -EOPNOTSUPP;
6922
6923 wiphy = &rdev->wiphy;
6924
6925 if (info->attrs[NL80211_ATTR_MAC]) {
6926 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6927
6928 if (!is_valid_ether_addr(ibss.bssid))
6929 return -EINVAL;
6930 }
6931 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6932 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6933
6934 if (info->attrs[NL80211_ATTR_IE]) {
6935 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6936 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6937 }
6938
6939 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6940 if (err)
6941 return err;
6942
6943 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6944 NL80211_IFTYPE_ADHOC))
6945 return -EINVAL;
6946
6947 switch (ibss.chandef.width) {
6948 case NL80211_CHAN_WIDTH_5:
6949 case NL80211_CHAN_WIDTH_10:
6950 case NL80211_CHAN_WIDTH_20_NOHT:
6951 break;
6952 case NL80211_CHAN_WIDTH_20:
6953 case NL80211_CHAN_WIDTH_40:
6954 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6955 break;
6956 default:
6957 return -EINVAL;
6958 }
6959
6960 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6961 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6962
6963 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6964 u8 *rates =
6965 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6966 int n_rates =
6967 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6968 struct ieee80211_supported_band *sband =
6969 wiphy->bands[ibss.chandef.chan->band];
6970
6971 err = ieee80211_get_ratemask(sband, rates, n_rates,
6972 &ibss.basic_rates);
6973 if (err)
6974 return err;
6975 }
6976
6977 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6978 memcpy(&ibss.ht_capa_mask,
6979 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6980 sizeof(ibss.ht_capa_mask));
6981
6982 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6983 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6984 return -EINVAL;
6985 memcpy(&ibss.ht_capa,
6986 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6987 sizeof(ibss.ht_capa));
6988 }
6989
6990 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6991 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6992 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6993 return -EINVAL;
6994
6995 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6996 bool no_ht = false;
6997
6998 connkeys = nl80211_parse_connkeys(rdev,
6999 info->attrs[NL80211_ATTR_KEYS],
7000 &no_ht);
7001 if (IS_ERR(connkeys))
7002 return PTR_ERR(connkeys);
7003
7004 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7005 no_ht) {
7006 kfree(connkeys);
7007 return -EINVAL;
7008 }
7009 }
7010
7011 ibss.control_port =
7012 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7013
7014 ibss.userspace_handles_dfs =
7015 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7016
7017 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7018 if (err)
7019 kzfree(connkeys);
7020 return err;
7021 }
7022
7023 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7024 {
7025 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7026 struct net_device *dev = info->user_ptr[1];
7027
7028 if (!rdev->ops->leave_ibss)
7029 return -EOPNOTSUPP;
7030
7031 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7032 return -EOPNOTSUPP;
7033
7034 return cfg80211_leave_ibss(rdev, dev, false);
7035 }
7036
7037 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7038 {
7039 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7040 struct net_device *dev = info->user_ptr[1];
7041 int mcast_rate[IEEE80211_NUM_BANDS];
7042 u32 nla_rate;
7043 int err;
7044
7045 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7046 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7047 return -EOPNOTSUPP;
7048
7049 if (!rdev->ops->set_mcast_rate)
7050 return -EOPNOTSUPP;
7051
7052 memset(mcast_rate, 0, sizeof(mcast_rate));
7053
7054 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7055 return -EINVAL;
7056
7057 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7058 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7059 return -EINVAL;
7060
7061 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7062
7063 return err;
7064 }
7065
7066 static struct sk_buff *
7067 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7068 int approxlen, u32 portid, u32 seq,
7069 enum nl80211_commands cmd,
7070 enum nl80211_attrs attr,
7071 const struct nl80211_vendor_cmd_info *info,
7072 gfp_t gfp)
7073 {
7074 struct sk_buff *skb;
7075 void *hdr;
7076 struct nlattr *data;
7077
7078 skb = nlmsg_new(approxlen + 100, gfp);
7079 if (!skb)
7080 return NULL;
7081
7082 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7083 if (!hdr) {
7084 kfree_skb(skb);
7085 return NULL;
7086 }
7087
7088 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7089 goto nla_put_failure;
7090
7091 if (info) {
7092 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7093 info->vendor_id))
7094 goto nla_put_failure;
7095 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7096 info->subcmd))
7097 goto nla_put_failure;
7098 }
7099
7100 data = nla_nest_start(skb, attr);
7101
7102 ((void **)skb->cb)[0] = rdev;
7103 ((void **)skb->cb)[1] = hdr;
7104 ((void **)skb->cb)[2] = data;
7105
7106 return skb;
7107
7108 nla_put_failure:
7109 kfree_skb(skb);
7110 return NULL;
7111 }
7112
7113 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7114 enum nl80211_commands cmd,
7115 enum nl80211_attrs attr,
7116 int vendor_event_idx,
7117 int approxlen, gfp_t gfp)
7118 {
7119 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7120 const struct nl80211_vendor_cmd_info *info;
7121
7122 switch (cmd) {
7123 case NL80211_CMD_TESTMODE:
7124 if (WARN_ON(vendor_event_idx != -1))
7125 return NULL;
7126 info = NULL;
7127 break;
7128 case NL80211_CMD_VENDOR:
7129 if (WARN_ON(vendor_event_idx < 0 ||
7130 vendor_event_idx >= wiphy->n_vendor_events))
7131 return NULL;
7132 info = &wiphy->vendor_events[vendor_event_idx];
7133 break;
7134 default:
7135 WARN_ON(1);
7136 return NULL;
7137 }
7138
7139 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7140 cmd, attr, info, gfp);
7141 }
7142 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7143
7144 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7145 {
7146 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7147 void *hdr = ((void **)skb->cb)[1];
7148 struct nlattr *data = ((void **)skb->cb)[2];
7149 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7150
7151 /* clear CB data for netlink core to own from now on */
7152 memset(skb->cb, 0, sizeof(skb->cb));
7153
7154 nla_nest_end(skb, data);
7155 genlmsg_end(skb, hdr);
7156
7157 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7158 mcgrp = NL80211_MCGRP_VENDOR;
7159
7160 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7161 mcgrp, gfp);
7162 }
7163 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7164
7165 #ifdef CONFIG_NL80211_TESTMODE
7166 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7167 {
7168 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7169 struct wireless_dev *wdev =
7170 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7171 int err;
7172
7173 if (!rdev->ops->testmode_cmd)
7174 return -EOPNOTSUPP;
7175
7176 if (IS_ERR(wdev)) {
7177 err = PTR_ERR(wdev);
7178 if (err != -EINVAL)
7179 return err;
7180 wdev = NULL;
7181 } else if (wdev->wiphy != &rdev->wiphy) {
7182 return -EINVAL;
7183 }
7184
7185 if (!info->attrs[NL80211_ATTR_TESTDATA])
7186 return -EINVAL;
7187
7188 rdev->cur_cmd_info = info;
7189 err = rdev_testmode_cmd(rdev, wdev,
7190 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7191 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7192 rdev->cur_cmd_info = NULL;
7193
7194 return err;
7195 }
7196
7197 static int nl80211_testmode_dump(struct sk_buff *skb,
7198 struct netlink_callback *cb)
7199 {
7200 struct cfg80211_registered_device *rdev;
7201 int err;
7202 long phy_idx;
7203 void *data = NULL;
7204 int data_len = 0;
7205
7206 rtnl_lock();
7207
7208 if (cb->args[0]) {
7209 /*
7210 * 0 is a valid index, but not valid for args[0],
7211 * so we need to offset by 1.
7212 */
7213 phy_idx = cb->args[0] - 1;
7214 } else {
7215 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7216 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7217 nl80211_policy);
7218 if (err)
7219 goto out_err;
7220
7221 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7222 nl80211_fam.attrbuf);
7223 if (IS_ERR(rdev)) {
7224 err = PTR_ERR(rdev);
7225 goto out_err;
7226 }
7227 phy_idx = rdev->wiphy_idx;
7228 rdev = NULL;
7229
7230 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7231 cb->args[1] =
7232 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7233 }
7234
7235 if (cb->args[1]) {
7236 data = nla_data((void *)cb->args[1]);
7237 data_len = nla_len((void *)cb->args[1]);
7238 }
7239
7240 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7241 if (!rdev) {
7242 err = -ENOENT;
7243 goto out_err;
7244 }
7245
7246 if (!rdev->ops->testmode_dump) {
7247 err = -EOPNOTSUPP;
7248 goto out_err;
7249 }
7250
7251 while (1) {
7252 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7253 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7254 NL80211_CMD_TESTMODE);
7255 struct nlattr *tmdata;
7256
7257 if (!hdr)
7258 break;
7259
7260 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7261 genlmsg_cancel(skb, hdr);
7262 break;
7263 }
7264
7265 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7266 if (!tmdata) {
7267 genlmsg_cancel(skb, hdr);
7268 break;
7269 }
7270 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7271 nla_nest_end(skb, tmdata);
7272
7273 if (err == -ENOBUFS || err == -ENOENT) {
7274 genlmsg_cancel(skb, hdr);
7275 break;
7276 } else if (err) {
7277 genlmsg_cancel(skb, hdr);
7278 goto out_err;
7279 }
7280
7281 genlmsg_end(skb, hdr);
7282 }
7283
7284 err = skb->len;
7285 /* see above */
7286 cb->args[0] = phy_idx + 1;
7287 out_err:
7288 rtnl_unlock();
7289 return err;
7290 }
7291 #endif
7292
7293 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7294 {
7295 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7296 struct net_device *dev = info->user_ptr[1];
7297 struct cfg80211_connect_params connect;
7298 struct wiphy *wiphy;
7299 struct cfg80211_cached_keys *connkeys = NULL;
7300 int err;
7301
7302 memset(&connect, 0, sizeof(connect));
7303
7304 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7305 return -EINVAL;
7306
7307 if (!info->attrs[NL80211_ATTR_SSID] ||
7308 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7309 return -EINVAL;
7310
7311 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7312 connect.auth_type =
7313 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7314 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7315 NL80211_CMD_CONNECT))
7316 return -EINVAL;
7317 } else
7318 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7319
7320 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7321
7322 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7323 NL80211_MAX_NR_CIPHER_SUITES);
7324 if (err)
7325 return err;
7326
7327 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7328 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7329 return -EOPNOTSUPP;
7330
7331 wiphy = &rdev->wiphy;
7332
7333 connect.bg_scan_period = -1;
7334 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7335 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7336 connect.bg_scan_period =
7337 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7338 }
7339
7340 if (info->attrs[NL80211_ATTR_MAC])
7341 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7342 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7343 connect.bssid_hint =
7344 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7345 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7346 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7347
7348 if (info->attrs[NL80211_ATTR_IE]) {
7349 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7350 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7351 }
7352
7353 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7354 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7355 if (connect.mfp != NL80211_MFP_REQUIRED &&
7356 connect.mfp != NL80211_MFP_NO)
7357 return -EINVAL;
7358 } else {
7359 connect.mfp = NL80211_MFP_NO;
7360 }
7361
7362 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7363 connect.channel = nl80211_get_valid_chan(
7364 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7365 if (!connect.channel)
7366 return -EINVAL;
7367 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7368 connect.channel_hint = nl80211_get_valid_chan(
7369 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7370 if (!connect.channel_hint)
7371 return -EINVAL;
7372 }
7373
7374 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7375 connkeys = nl80211_parse_connkeys(rdev,
7376 info->attrs[NL80211_ATTR_KEYS], NULL);
7377 if (IS_ERR(connkeys))
7378 return PTR_ERR(connkeys);
7379 }
7380
7381 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7382 connect.flags |= ASSOC_REQ_DISABLE_HT;
7383
7384 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7385 memcpy(&connect.ht_capa_mask,
7386 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7387 sizeof(connect.ht_capa_mask));
7388
7389 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7390 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7391 kzfree(connkeys);
7392 return -EINVAL;
7393 }
7394 memcpy(&connect.ht_capa,
7395 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7396 sizeof(connect.ht_capa));
7397 }
7398
7399 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7400 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7401
7402 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7403 memcpy(&connect.vht_capa_mask,
7404 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7405 sizeof(connect.vht_capa_mask));
7406
7407 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7408 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7409 kzfree(connkeys);
7410 return -EINVAL;
7411 }
7412 memcpy(&connect.vht_capa,
7413 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7414 sizeof(connect.vht_capa));
7415 }
7416
7417 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7418 if (!(rdev->wiphy.features &
7419 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7420 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7421 return -EINVAL;
7422 connect.flags |= ASSOC_REQ_USE_RRM;
7423 }
7424
7425 wdev_lock(dev->ieee80211_ptr);
7426 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7427 wdev_unlock(dev->ieee80211_ptr);
7428 if (err)
7429 kzfree(connkeys);
7430 return err;
7431 }
7432
7433 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7434 {
7435 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7436 struct net_device *dev = info->user_ptr[1];
7437 u16 reason;
7438 int ret;
7439
7440 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7441 reason = WLAN_REASON_DEAUTH_LEAVING;
7442 else
7443 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7444
7445 if (reason == 0)
7446 return -EINVAL;
7447
7448 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7449 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7450 return -EOPNOTSUPP;
7451
7452 wdev_lock(dev->ieee80211_ptr);
7453 ret = cfg80211_disconnect(rdev, dev, reason, true);
7454 wdev_unlock(dev->ieee80211_ptr);
7455 return ret;
7456 }
7457
7458 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7459 {
7460 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7461 struct net *net;
7462 int err;
7463 u32 pid;
7464
7465 if (!info->attrs[NL80211_ATTR_PID])
7466 return -EINVAL;
7467
7468 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7469
7470 net = get_net_ns_by_pid(pid);
7471 if (IS_ERR(net))
7472 return PTR_ERR(net);
7473
7474 err = 0;
7475
7476 /* check if anything to do */
7477 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7478 err = cfg80211_switch_netns(rdev, net);
7479
7480 put_net(net);
7481 return err;
7482 }
7483
7484 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7485 {
7486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7487 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7488 struct cfg80211_pmksa *pmksa) = NULL;
7489 struct net_device *dev = info->user_ptr[1];
7490 struct cfg80211_pmksa pmksa;
7491
7492 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7493
7494 if (!info->attrs[NL80211_ATTR_MAC])
7495 return -EINVAL;
7496
7497 if (!info->attrs[NL80211_ATTR_PMKID])
7498 return -EINVAL;
7499
7500 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7501 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7502
7503 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7504 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7505 return -EOPNOTSUPP;
7506
7507 switch (info->genlhdr->cmd) {
7508 case NL80211_CMD_SET_PMKSA:
7509 rdev_ops = rdev->ops->set_pmksa;
7510 break;
7511 case NL80211_CMD_DEL_PMKSA:
7512 rdev_ops = rdev->ops->del_pmksa;
7513 break;
7514 default:
7515 WARN_ON(1);
7516 break;
7517 }
7518
7519 if (!rdev_ops)
7520 return -EOPNOTSUPP;
7521
7522 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7523 }
7524
7525 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7526 {
7527 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7528 struct net_device *dev = info->user_ptr[1];
7529
7530 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7531 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7532 return -EOPNOTSUPP;
7533
7534 if (!rdev->ops->flush_pmksa)
7535 return -EOPNOTSUPP;
7536
7537 return rdev_flush_pmksa(rdev, dev);
7538 }
7539
7540 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7541 {
7542 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7543 struct net_device *dev = info->user_ptr[1];
7544 u8 action_code, dialog_token;
7545 u32 peer_capability = 0;
7546 u16 status_code;
7547 u8 *peer;
7548 bool initiator;
7549
7550 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7551 !rdev->ops->tdls_mgmt)
7552 return -EOPNOTSUPP;
7553
7554 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7555 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7556 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7557 !info->attrs[NL80211_ATTR_IE] ||
7558 !info->attrs[NL80211_ATTR_MAC])
7559 return -EINVAL;
7560
7561 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7562 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7563 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7564 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7565 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7566 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7567 peer_capability =
7568 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7569
7570 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7571 dialog_token, status_code, peer_capability,
7572 initiator,
7573 nla_data(info->attrs[NL80211_ATTR_IE]),
7574 nla_len(info->attrs[NL80211_ATTR_IE]));
7575 }
7576
7577 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7578 {
7579 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7580 struct net_device *dev = info->user_ptr[1];
7581 enum nl80211_tdls_operation operation;
7582 u8 *peer;
7583
7584 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7585 !rdev->ops->tdls_oper)
7586 return -EOPNOTSUPP;
7587
7588 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7589 !info->attrs[NL80211_ATTR_MAC])
7590 return -EINVAL;
7591
7592 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7593 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7594
7595 return rdev_tdls_oper(rdev, dev, peer, operation);
7596 }
7597
7598 static int nl80211_remain_on_channel(struct sk_buff *skb,
7599 struct genl_info *info)
7600 {
7601 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7602 struct wireless_dev *wdev = info->user_ptr[1];
7603 struct cfg80211_chan_def chandef;
7604 struct sk_buff *msg;
7605 void *hdr;
7606 u64 cookie;
7607 u32 duration;
7608 int err;
7609
7610 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7611 !info->attrs[NL80211_ATTR_DURATION])
7612 return -EINVAL;
7613
7614 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7615
7616 if (!rdev->ops->remain_on_channel ||
7617 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7618 return -EOPNOTSUPP;
7619
7620 /*
7621 * We should be on that channel for at least a minimum amount of
7622 * time (10ms) but no longer than the driver supports.
7623 */
7624 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7625 duration > rdev->wiphy.max_remain_on_channel_duration)
7626 return -EINVAL;
7627
7628 err = nl80211_parse_chandef(rdev, info, &chandef);
7629 if (err)
7630 return err;
7631
7632 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7633 if (!msg)
7634 return -ENOMEM;
7635
7636 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7637 NL80211_CMD_REMAIN_ON_CHANNEL);
7638 if (!hdr) {
7639 err = -ENOBUFS;
7640 goto free_msg;
7641 }
7642
7643 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7644 duration, &cookie);
7645
7646 if (err)
7647 goto free_msg;
7648
7649 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7650 goto nla_put_failure;
7651
7652 genlmsg_end(msg, hdr);
7653
7654 return genlmsg_reply(msg, info);
7655
7656 nla_put_failure:
7657 err = -ENOBUFS;
7658 free_msg:
7659 nlmsg_free(msg);
7660 return err;
7661 }
7662
7663 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7664 struct genl_info *info)
7665 {
7666 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7667 struct wireless_dev *wdev = info->user_ptr[1];
7668 u64 cookie;
7669
7670 if (!info->attrs[NL80211_ATTR_COOKIE])
7671 return -EINVAL;
7672
7673 if (!rdev->ops->cancel_remain_on_channel)
7674 return -EOPNOTSUPP;
7675
7676 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7677
7678 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7679 }
7680
7681 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7682 u8 *rates, u8 rates_len)
7683 {
7684 u8 i;
7685 u32 mask = 0;
7686
7687 for (i = 0; i < rates_len; i++) {
7688 int rate = (rates[i] & 0x7f) * 5;
7689 int ridx;
7690 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7691 struct ieee80211_rate *srate =
7692 &sband->bitrates[ridx];
7693 if (rate == srate->bitrate) {
7694 mask |= 1 << ridx;
7695 break;
7696 }
7697 }
7698 if (ridx == sband->n_bitrates)
7699 return 0; /* rate not found */
7700 }
7701
7702 return mask;
7703 }
7704
7705 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7706 u8 *rates, u8 rates_len,
7707 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7708 {
7709 u8 i;
7710
7711 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7712
7713 for (i = 0; i < rates_len; i++) {
7714 int ridx, rbit;
7715
7716 ridx = rates[i] / 8;
7717 rbit = BIT(rates[i] % 8);
7718
7719 /* check validity */
7720 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7721 return false;
7722
7723 /* check availability */
7724 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7725 mcs[ridx] |= rbit;
7726 else
7727 return false;
7728 }
7729
7730 return true;
7731 }
7732
7733 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7734 {
7735 u16 mcs_mask = 0;
7736
7737 switch (vht_mcs_map) {
7738 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7739 break;
7740 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7741 mcs_mask = 0x00FF;
7742 break;
7743 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7744 mcs_mask = 0x01FF;
7745 break;
7746 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7747 mcs_mask = 0x03FF;
7748 break;
7749 default:
7750 break;
7751 }
7752
7753 return mcs_mask;
7754 }
7755
7756 static void vht_build_mcs_mask(u16 vht_mcs_map,
7757 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7758 {
7759 u8 nss;
7760
7761 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7762 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7763 vht_mcs_map >>= 2;
7764 }
7765 }
7766
7767 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7768 struct nl80211_txrate_vht *txrate,
7769 u16 mcs[NL80211_VHT_NSS_MAX])
7770 {
7771 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7772 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7773 u8 i;
7774
7775 if (!sband->vht_cap.vht_supported)
7776 return false;
7777
7778 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7779
7780 /* Build vht_mcs_mask from VHT capabilities */
7781 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7782
7783 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7784 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7785 mcs[i] = txrate->mcs[i];
7786 else
7787 return false;
7788 }
7789
7790 return true;
7791 }
7792
7793 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7794 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7795 .len = NL80211_MAX_SUPP_RATES },
7796 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7797 .len = NL80211_MAX_SUPP_HT_RATES },
7798 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7799 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7800 };
7801
7802 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7803 struct genl_info *info)
7804 {
7805 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7806 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7807 struct cfg80211_bitrate_mask mask;
7808 int rem, i;
7809 struct net_device *dev = info->user_ptr[1];
7810 struct nlattr *tx_rates;
7811 struct ieee80211_supported_band *sband;
7812 u16 vht_tx_mcs_map;
7813
7814 if (!rdev->ops->set_bitrate_mask)
7815 return -EOPNOTSUPP;
7816
7817 memset(&mask, 0, sizeof(mask));
7818 /* Default to all rates enabled */
7819 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7820 sband = rdev->wiphy.bands[i];
7821
7822 if (!sband)
7823 continue;
7824
7825 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7826 memcpy(mask.control[i].ht_mcs,
7827 sband->ht_cap.mcs.rx_mask,
7828 sizeof(mask.control[i].ht_mcs));
7829
7830 if (!sband->vht_cap.vht_supported)
7831 continue;
7832
7833 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7834 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7835 }
7836
7837 /* if no rates are given set it back to the defaults */
7838 if (!info->attrs[NL80211_ATTR_TX_RATES])
7839 goto out;
7840
7841 /*
7842 * The nested attribute uses enum nl80211_band as the index. This maps
7843 * directly to the enum ieee80211_band values used in cfg80211.
7844 */
7845 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7846 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7847 enum ieee80211_band band = nla_type(tx_rates);
7848 int err;
7849
7850 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7851 return -EINVAL;
7852 sband = rdev->wiphy.bands[band];
7853 if (sband == NULL)
7854 return -EINVAL;
7855 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7856 nla_len(tx_rates), nl80211_txattr_policy);
7857 if (err)
7858 return err;
7859 if (tb[NL80211_TXRATE_LEGACY]) {
7860 mask.control[band].legacy = rateset_to_mask(
7861 sband,
7862 nla_data(tb[NL80211_TXRATE_LEGACY]),
7863 nla_len(tb[NL80211_TXRATE_LEGACY]));
7864 if ((mask.control[band].legacy == 0) &&
7865 nla_len(tb[NL80211_TXRATE_LEGACY]))
7866 return -EINVAL;
7867 }
7868 if (tb[NL80211_TXRATE_HT]) {
7869 if (!ht_rateset_to_mask(
7870 sband,
7871 nla_data(tb[NL80211_TXRATE_HT]),
7872 nla_len(tb[NL80211_TXRATE_HT]),
7873 mask.control[band].ht_mcs))
7874 return -EINVAL;
7875 }
7876 if (tb[NL80211_TXRATE_VHT]) {
7877 if (!vht_set_mcs_mask(
7878 sband,
7879 nla_data(tb[NL80211_TXRATE_VHT]),
7880 mask.control[band].vht_mcs))
7881 return -EINVAL;
7882 }
7883 if (tb[NL80211_TXRATE_GI]) {
7884 mask.control[band].gi =
7885 nla_get_u8(tb[NL80211_TXRATE_GI]);
7886 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7887 return -EINVAL;
7888 }
7889
7890 if (mask.control[band].legacy == 0) {
7891 /* don't allow empty legacy rates if HT or VHT
7892 * are not even supported.
7893 */
7894 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7895 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7896 return -EINVAL;
7897
7898 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7899 if (mask.control[band].ht_mcs[i])
7900 goto out;
7901
7902 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7903 if (mask.control[band].vht_mcs[i])
7904 goto out;
7905
7906 /* legacy and mcs rates may not be both empty */
7907 return -EINVAL;
7908 }
7909 }
7910
7911 out:
7912 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7913 }
7914
7915 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7916 {
7917 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7918 struct wireless_dev *wdev = info->user_ptr[1];
7919 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7920
7921 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7922 return -EINVAL;
7923
7924 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7925 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7926
7927 switch (wdev->iftype) {
7928 case NL80211_IFTYPE_STATION:
7929 case NL80211_IFTYPE_ADHOC:
7930 case NL80211_IFTYPE_P2P_CLIENT:
7931 case NL80211_IFTYPE_AP:
7932 case NL80211_IFTYPE_AP_VLAN:
7933 case NL80211_IFTYPE_MESH_POINT:
7934 case NL80211_IFTYPE_P2P_GO:
7935 case NL80211_IFTYPE_P2P_DEVICE:
7936 break;
7937 default:
7938 return -EOPNOTSUPP;
7939 }
7940
7941 /* not much point in registering if we can't reply */
7942 if (!rdev->ops->mgmt_tx)
7943 return -EOPNOTSUPP;
7944
7945 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7946 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7947 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7948 }
7949
7950 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7951 {
7952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7953 struct wireless_dev *wdev = info->user_ptr[1];
7954 struct cfg80211_chan_def chandef;
7955 int err;
7956 void *hdr = NULL;
7957 u64 cookie;
7958 struct sk_buff *msg = NULL;
7959 struct cfg80211_mgmt_tx_params params = {
7960 .dont_wait_for_ack =
7961 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7962 };
7963
7964 if (!info->attrs[NL80211_ATTR_FRAME])
7965 return -EINVAL;
7966
7967 if (!rdev->ops->mgmt_tx)
7968 return -EOPNOTSUPP;
7969
7970 switch (wdev->iftype) {
7971 case NL80211_IFTYPE_P2P_DEVICE:
7972 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7973 return -EINVAL;
7974 case NL80211_IFTYPE_STATION:
7975 case NL80211_IFTYPE_ADHOC:
7976 case NL80211_IFTYPE_P2P_CLIENT:
7977 case NL80211_IFTYPE_AP:
7978 case NL80211_IFTYPE_AP_VLAN:
7979 case NL80211_IFTYPE_MESH_POINT:
7980 case NL80211_IFTYPE_P2P_GO:
7981 break;
7982 default:
7983 return -EOPNOTSUPP;
7984 }
7985
7986 if (info->attrs[NL80211_ATTR_DURATION]) {
7987 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7988 return -EINVAL;
7989 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7990
7991 /*
7992 * We should wait on the channel for at least a minimum amount
7993 * of time (10ms) but no longer than the driver supports.
7994 */
7995 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7996 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7997 return -EINVAL;
7998
7999 }
8000
8001 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8002
8003 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8004 return -EINVAL;
8005
8006 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8007
8008 /* get the channel if any has been specified, otherwise pass NULL to
8009 * the driver. The latter will use the current one
8010 */
8011 chandef.chan = NULL;
8012 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8013 err = nl80211_parse_chandef(rdev, info, &chandef);
8014 if (err)
8015 return err;
8016 }
8017
8018 if (!chandef.chan && params.offchan)
8019 return -EINVAL;
8020
8021 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8022 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8023
8024 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8025 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8026 int i;
8027
8028 if (len % sizeof(u16))
8029 return -EINVAL;
8030
8031 params.n_csa_offsets = len / sizeof(u16);
8032 params.csa_offsets =
8033 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8034
8035 /* check that all the offsets fit the frame */
8036 for (i = 0; i < params.n_csa_offsets; i++) {
8037 if (params.csa_offsets[i] >= params.len)
8038 return -EINVAL;
8039 }
8040 }
8041
8042 if (!params.dont_wait_for_ack) {
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_FRAME);
8049 if (!hdr) {
8050 err = -ENOBUFS;
8051 goto free_msg;
8052 }
8053 }
8054
8055 params.chan = chandef.chan;
8056 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8057 if (err)
8058 goto free_msg;
8059
8060 if (msg) {
8061 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8062 goto nla_put_failure;
8063
8064 genlmsg_end(msg, hdr);
8065 return genlmsg_reply(msg, info);
8066 }
8067
8068 return 0;
8069
8070 nla_put_failure:
8071 err = -ENOBUFS;
8072 free_msg:
8073 nlmsg_free(msg);
8074 return err;
8075 }
8076
8077 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8078 {
8079 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8080 struct wireless_dev *wdev = info->user_ptr[1];
8081 u64 cookie;
8082
8083 if (!info->attrs[NL80211_ATTR_COOKIE])
8084 return -EINVAL;
8085
8086 if (!rdev->ops->mgmt_tx_cancel_wait)
8087 return -EOPNOTSUPP;
8088
8089 switch (wdev->iftype) {
8090 case NL80211_IFTYPE_STATION:
8091 case NL80211_IFTYPE_ADHOC:
8092 case NL80211_IFTYPE_P2P_CLIENT:
8093 case NL80211_IFTYPE_AP:
8094 case NL80211_IFTYPE_AP_VLAN:
8095 case NL80211_IFTYPE_P2P_GO:
8096 case NL80211_IFTYPE_P2P_DEVICE:
8097 break;
8098 default:
8099 return -EOPNOTSUPP;
8100 }
8101
8102 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8103
8104 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8105 }
8106
8107 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8108 {
8109 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8110 struct wireless_dev *wdev;
8111 struct net_device *dev = info->user_ptr[1];
8112 u8 ps_state;
8113 bool state;
8114 int err;
8115
8116 if (!info->attrs[NL80211_ATTR_PS_STATE])
8117 return -EINVAL;
8118
8119 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8120
8121 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8122 return -EINVAL;
8123
8124 wdev = dev->ieee80211_ptr;
8125
8126 if (!rdev->ops->set_power_mgmt)
8127 return -EOPNOTSUPP;
8128
8129 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8130
8131 if (state == wdev->ps)
8132 return 0;
8133
8134 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8135 if (!err)
8136 wdev->ps = state;
8137 return err;
8138 }
8139
8140 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8141 {
8142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8143 enum nl80211_ps_state ps_state;
8144 struct wireless_dev *wdev;
8145 struct net_device *dev = info->user_ptr[1];
8146 struct sk_buff *msg;
8147 void *hdr;
8148 int err;
8149
8150 wdev = dev->ieee80211_ptr;
8151
8152 if (!rdev->ops->set_power_mgmt)
8153 return -EOPNOTSUPP;
8154
8155 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8156 if (!msg)
8157 return -ENOMEM;
8158
8159 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8160 NL80211_CMD_GET_POWER_SAVE);
8161 if (!hdr) {
8162 err = -ENOBUFS;
8163 goto free_msg;
8164 }
8165
8166 if (wdev->ps)
8167 ps_state = NL80211_PS_ENABLED;
8168 else
8169 ps_state = NL80211_PS_DISABLED;
8170
8171 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8172 goto nla_put_failure;
8173
8174 genlmsg_end(msg, hdr);
8175 return genlmsg_reply(msg, info);
8176
8177 nla_put_failure:
8178 err = -ENOBUFS;
8179 free_msg:
8180 nlmsg_free(msg);
8181 return err;
8182 }
8183
8184 static const struct nla_policy
8185 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8186 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8187 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8188 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8189 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8190 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8191 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8192 };
8193
8194 static int nl80211_set_cqm_txe(struct genl_info *info,
8195 u32 rate, u32 pkts, u32 intvl)
8196 {
8197 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8198 struct net_device *dev = info->user_ptr[1];
8199 struct wireless_dev *wdev = dev->ieee80211_ptr;
8200
8201 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8202 return -EINVAL;
8203
8204 if (!rdev->ops->set_cqm_txe_config)
8205 return -EOPNOTSUPP;
8206
8207 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8208 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8209 return -EOPNOTSUPP;
8210
8211 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8212 }
8213
8214 static int nl80211_set_cqm_rssi(struct genl_info *info,
8215 s32 threshold, u32 hysteresis)
8216 {
8217 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8218 struct net_device *dev = info->user_ptr[1];
8219 struct wireless_dev *wdev = dev->ieee80211_ptr;
8220
8221 if (threshold > 0)
8222 return -EINVAL;
8223
8224 /* disabling - hysteresis should also be zero then */
8225 if (threshold == 0)
8226 hysteresis = 0;
8227
8228 if (!rdev->ops->set_cqm_rssi_config)
8229 return -EOPNOTSUPP;
8230
8231 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8232 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8233 return -EOPNOTSUPP;
8234
8235 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8236 }
8237
8238 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8239 {
8240 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8241 struct nlattr *cqm;
8242 int err;
8243
8244 cqm = info->attrs[NL80211_ATTR_CQM];
8245 if (!cqm)
8246 return -EINVAL;
8247
8248 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8249 nl80211_attr_cqm_policy);
8250 if (err)
8251 return err;
8252
8253 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8254 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8255 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8256 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8257
8258 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8259 }
8260
8261 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8262 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8263 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8264 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8265 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8266 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8267
8268 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8269 }
8270
8271 return -EINVAL;
8272 }
8273
8274 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8275 {
8276 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8277 struct net_device *dev = info->user_ptr[1];
8278 struct mesh_config cfg;
8279 struct mesh_setup setup;
8280 int err;
8281
8282 /* start with default */
8283 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8284 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8285
8286 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8287 /* and parse parameters if given */
8288 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8289 if (err)
8290 return err;
8291 }
8292
8293 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8294 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8295 return -EINVAL;
8296
8297 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8298 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8299
8300 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8301 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8302 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8303 return -EINVAL;
8304
8305 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8306 setup.beacon_interval =
8307 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8308 if (setup.beacon_interval < 10 ||
8309 setup.beacon_interval > 10000)
8310 return -EINVAL;
8311 }
8312
8313 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8314 setup.dtim_period =
8315 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8316 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8317 return -EINVAL;
8318 }
8319
8320 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8321 /* parse additional setup parameters if given */
8322 err = nl80211_parse_mesh_setup(info, &setup);
8323 if (err)
8324 return err;
8325 }
8326
8327 if (setup.user_mpm)
8328 cfg.auto_open_plinks = false;
8329
8330 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8331 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8332 if (err)
8333 return err;
8334 } else {
8335 /* cfg80211_join_mesh() will sort it out */
8336 setup.chandef.chan = NULL;
8337 }
8338
8339 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8340 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8341 int n_rates =
8342 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8343 struct ieee80211_supported_band *sband;
8344
8345 if (!setup.chandef.chan)
8346 return -EINVAL;
8347
8348 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8349
8350 err = ieee80211_get_ratemask(sband, rates, n_rates,
8351 &setup.basic_rates);
8352 if (err)
8353 return err;
8354 }
8355
8356 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8357 }
8358
8359 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8360 {
8361 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8362 struct net_device *dev = info->user_ptr[1];
8363
8364 return cfg80211_leave_mesh(rdev, dev);
8365 }
8366
8367 #ifdef CONFIG_PM
8368 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8369 struct cfg80211_registered_device *rdev)
8370 {
8371 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8372 struct nlattr *nl_pats, *nl_pat;
8373 int i, pat_len;
8374
8375 if (!wowlan->n_patterns)
8376 return 0;
8377
8378 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8379 if (!nl_pats)
8380 return -ENOBUFS;
8381
8382 for (i = 0; i < wowlan->n_patterns; i++) {
8383 nl_pat = nla_nest_start(msg, i + 1);
8384 if (!nl_pat)
8385 return -ENOBUFS;
8386 pat_len = wowlan->patterns[i].pattern_len;
8387 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8388 wowlan->patterns[i].mask) ||
8389 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8390 wowlan->patterns[i].pattern) ||
8391 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8392 wowlan->patterns[i].pkt_offset))
8393 return -ENOBUFS;
8394 nla_nest_end(msg, nl_pat);
8395 }
8396 nla_nest_end(msg, nl_pats);
8397
8398 return 0;
8399 }
8400
8401 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8402 struct cfg80211_wowlan_tcp *tcp)
8403 {
8404 struct nlattr *nl_tcp;
8405
8406 if (!tcp)
8407 return 0;
8408
8409 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8410 if (!nl_tcp)
8411 return -ENOBUFS;
8412
8413 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8414 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8415 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8416 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8417 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8418 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8419 tcp->payload_len, tcp->payload) ||
8420 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8421 tcp->data_interval) ||
8422 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8423 tcp->wake_len, tcp->wake_data) ||
8424 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8425 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8426 return -ENOBUFS;
8427
8428 if (tcp->payload_seq.len &&
8429 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8430 sizeof(tcp->payload_seq), &tcp->payload_seq))
8431 return -ENOBUFS;
8432
8433 if (tcp->payload_tok.len &&
8434 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8435 sizeof(tcp->payload_tok) + tcp->tokens_size,
8436 &tcp->payload_tok))
8437 return -ENOBUFS;
8438
8439 nla_nest_end(msg, nl_tcp);
8440
8441 return 0;
8442 }
8443
8444 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8445 {
8446 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8447 struct sk_buff *msg;
8448 void *hdr;
8449 u32 size = NLMSG_DEFAULT_SIZE;
8450
8451 if (!rdev->wiphy.wowlan)
8452 return -EOPNOTSUPP;
8453
8454 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8455 /* adjust size to have room for all the data */
8456 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8457 rdev->wiphy.wowlan_config->tcp->payload_len +
8458 rdev->wiphy.wowlan_config->tcp->wake_len +
8459 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8460 }
8461
8462 msg = nlmsg_new(size, GFP_KERNEL);
8463 if (!msg)
8464 return -ENOMEM;
8465
8466 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8467 NL80211_CMD_GET_WOWLAN);
8468 if (!hdr)
8469 goto nla_put_failure;
8470
8471 if (rdev->wiphy.wowlan_config) {
8472 struct nlattr *nl_wowlan;
8473
8474 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8475 if (!nl_wowlan)
8476 goto nla_put_failure;
8477
8478 if ((rdev->wiphy.wowlan_config->any &&
8479 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8480 (rdev->wiphy.wowlan_config->disconnect &&
8481 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8482 (rdev->wiphy.wowlan_config->magic_pkt &&
8483 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8484 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8485 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8486 (rdev->wiphy.wowlan_config->eap_identity_req &&
8487 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8488 (rdev->wiphy.wowlan_config->four_way_handshake &&
8489 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8490 (rdev->wiphy.wowlan_config->rfkill_release &&
8491 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8492 goto nla_put_failure;
8493
8494 if (nl80211_send_wowlan_patterns(msg, rdev))
8495 goto nla_put_failure;
8496
8497 if (nl80211_send_wowlan_tcp(msg,
8498 rdev->wiphy.wowlan_config->tcp))
8499 goto nla_put_failure;
8500
8501 nla_nest_end(msg, nl_wowlan);
8502 }
8503
8504 genlmsg_end(msg, hdr);
8505 return genlmsg_reply(msg, info);
8506
8507 nla_put_failure:
8508 nlmsg_free(msg);
8509 return -ENOBUFS;
8510 }
8511
8512 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8513 struct nlattr *attr,
8514 struct cfg80211_wowlan *trig)
8515 {
8516 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8517 struct cfg80211_wowlan_tcp *cfg;
8518 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8519 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8520 u32 size;
8521 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8522 int err, port;
8523
8524 if (!rdev->wiphy.wowlan->tcp)
8525 return -EINVAL;
8526
8527 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8528 nla_data(attr), nla_len(attr),
8529 nl80211_wowlan_tcp_policy);
8530 if (err)
8531 return err;
8532
8533 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8534 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8535 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8536 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8537 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8538 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8539 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8540 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8541 return -EINVAL;
8542
8543 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8544 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8545 return -EINVAL;
8546
8547 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8548 rdev->wiphy.wowlan->tcp->data_interval_max ||
8549 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8550 return -EINVAL;
8551
8552 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8553 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8554 return -EINVAL;
8555
8556 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8557 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8558 return -EINVAL;
8559
8560 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8561 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8562
8563 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8564 tokens_size = tokln - sizeof(*tok);
8565
8566 if (!tok->len || tokens_size % tok->len)
8567 return -EINVAL;
8568 if (!rdev->wiphy.wowlan->tcp->tok)
8569 return -EINVAL;
8570 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8571 return -EINVAL;
8572 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8573 return -EINVAL;
8574 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8575 return -EINVAL;
8576 if (tok->offset + tok->len > data_size)
8577 return -EINVAL;
8578 }
8579
8580 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8581 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8582 if (!rdev->wiphy.wowlan->tcp->seq)
8583 return -EINVAL;
8584 if (seq->len == 0 || seq->len > 4)
8585 return -EINVAL;
8586 if (seq->len + seq->offset > data_size)
8587 return -EINVAL;
8588 }
8589
8590 size = sizeof(*cfg);
8591 size += data_size;
8592 size += wake_size + wake_mask_size;
8593 size += tokens_size;
8594
8595 cfg = kzalloc(size, GFP_KERNEL);
8596 if (!cfg)
8597 return -ENOMEM;
8598 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8599 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8600 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8601 ETH_ALEN);
8602 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8603 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8604 else
8605 port = 0;
8606 #ifdef CONFIG_INET
8607 /* allocate a socket and port for it and use it */
8608 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8609 IPPROTO_TCP, &cfg->sock, 1);
8610 if (err) {
8611 kfree(cfg);
8612 return err;
8613 }
8614 if (inet_csk_get_port(cfg->sock->sk, port)) {
8615 sock_release(cfg->sock);
8616 kfree(cfg);
8617 return -EADDRINUSE;
8618 }
8619 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8620 #else
8621 if (!port) {
8622 kfree(cfg);
8623 return -EINVAL;
8624 }
8625 cfg->src_port = port;
8626 #endif
8627
8628 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8629 cfg->payload_len = data_size;
8630 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8631 memcpy((void *)cfg->payload,
8632 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8633 data_size);
8634 if (seq)
8635 cfg->payload_seq = *seq;
8636 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8637 cfg->wake_len = wake_size;
8638 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8639 memcpy((void *)cfg->wake_data,
8640 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8641 wake_size);
8642 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8643 data_size + wake_size;
8644 memcpy((void *)cfg->wake_mask,
8645 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8646 wake_mask_size);
8647 if (tok) {
8648 cfg->tokens_size = tokens_size;
8649 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8650 }
8651
8652 trig->tcp = cfg;
8653
8654 return 0;
8655 }
8656
8657 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8658 {
8659 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8660 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8661 struct cfg80211_wowlan new_triggers = {};
8662 struct cfg80211_wowlan *ntrig;
8663 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8664 int err, i;
8665 bool prev_enabled = rdev->wiphy.wowlan_config;
8666
8667 if (!wowlan)
8668 return -EOPNOTSUPP;
8669
8670 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8671 cfg80211_rdev_free_wowlan(rdev);
8672 rdev->wiphy.wowlan_config = NULL;
8673 goto set_wakeup;
8674 }
8675
8676 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8677 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8678 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8679 nl80211_wowlan_policy);
8680 if (err)
8681 return err;
8682
8683 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8684 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8685 return -EINVAL;
8686 new_triggers.any = true;
8687 }
8688
8689 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8690 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8691 return -EINVAL;
8692 new_triggers.disconnect = true;
8693 }
8694
8695 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8696 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8697 return -EINVAL;
8698 new_triggers.magic_pkt = true;
8699 }
8700
8701 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8702 return -EINVAL;
8703
8704 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8705 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8706 return -EINVAL;
8707 new_triggers.gtk_rekey_failure = true;
8708 }
8709
8710 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8711 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8712 return -EINVAL;
8713 new_triggers.eap_identity_req = true;
8714 }
8715
8716 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8717 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8718 return -EINVAL;
8719 new_triggers.four_way_handshake = true;
8720 }
8721
8722 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8723 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8724 return -EINVAL;
8725 new_triggers.rfkill_release = true;
8726 }
8727
8728 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8729 struct nlattr *pat;
8730 int n_patterns = 0;
8731 int rem, pat_len, mask_len, pkt_offset;
8732 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8733
8734 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8735 rem)
8736 n_patterns++;
8737 if (n_patterns > wowlan->n_patterns)
8738 return -EINVAL;
8739
8740 new_triggers.patterns = kcalloc(n_patterns,
8741 sizeof(new_triggers.patterns[0]),
8742 GFP_KERNEL);
8743 if (!new_triggers.patterns)
8744 return -ENOMEM;
8745
8746 new_triggers.n_patterns = n_patterns;
8747 i = 0;
8748
8749 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8750 rem) {
8751 u8 *mask_pat;
8752
8753 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8754 nla_len(pat), NULL);
8755 err = -EINVAL;
8756 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8757 !pat_tb[NL80211_PKTPAT_PATTERN])
8758 goto error;
8759 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8760 mask_len = DIV_ROUND_UP(pat_len, 8);
8761 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8762 goto error;
8763 if (pat_len > wowlan->pattern_max_len ||
8764 pat_len < wowlan->pattern_min_len)
8765 goto error;
8766
8767 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8768 pkt_offset = 0;
8769 else
8770 pkt_offset = nla_get_u32(
8771 pat_tb[NL80211_PKTPAT_OFFSET]);
8772 if (pkt_offset > wowlan->max_pkt_offset)
8773 goto error;
8774 new_triggers.patterns[i].pkt_offset = pkt_offset;
8775
8776 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8777 if (!mask_pat) {
8778 err = -ENOMEM;
8779 goto error;
8780 }
8781 new_triggers.patterns[i].mask = mask_pat;
8782 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8783 mask_len);
8784 mask_pat += mask_len;
8785 new_triggers.patterns[i].pattern = mask_pat;
8786 new_triggers.patterns[i].pattern_len = pat_len;
8787 memcpy(mask_pat,
8788 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8789 pat_len);
8790 i++;
8791 }
8792 }
8793
8794 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8795 err = nl80211_parse_wowlan_tcp(
8796 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8797 &new_triggers);
8798 if (err)
8799 goto error;
8800 }
8801
8802 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8803 if (!ntrig) {
8804 err = -ENOMEM;
8805 goto error;
8806 }
8807 cfg80211_rdev_free_wowlan(rdev);
8808 rdev->wiphy.wowlan_config = ntrig;
8809
8810 set_wakeup:
8811 if (rdev->ops->set_wakeup &&
8812 prev_enabled != !!rdev->wiphy.wowlan_config)
8813 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8814
8815 return 0;
8816 error:
8817 for (i = 0; i < new_triggers.n_patterns; i++)
8818 kfree(new_triggers.patterns[i].mask);
8819 kfree(new_triggers.patterns);
8820 if (new_triggers.tcp && new_triggers.tcp->sock)
8821 sock_release(new_triggers.tcp->sock);
8822 kfree(new_triggers.tcp);
8823 return err;
8824 }
8825 #endif
8826
8827 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8828 struct cfg80211_registered_device *rdev)
8829 {
8830 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8831 int i, j, pat_len;
8832 struct cfg80211_coalesce_rules *rule;
8833
8834 if (!rdev->coalesce->n_rules)
8835 return 0;
8836
8837 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8838 if (!nl_rules)
8839 return -ENOBUFS;
8840
8841 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8842 nl_rule = nla_nest_start(msg, i + 1);
8843 if (!nl_rule)
8844 return -ENOBUFS;
8845
8846 rule = &rdev->coalesce->rules[i];
8847 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8848 rule->delay))
8849 return -ENOBUFS;
8850
8851 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8852 rule->condition))
8853 return -ENOBUFS;
8854
8855 nl_pats = nla_nest_start(msg,
8856 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8857 if (!nl_pats)
8858 return -ENOBUFS;
8859
8860 for (j = 0; j < rule->n_patterns; j++) {
8861 nl_pat = nla_nest_start(msg, j + 1);
8862 if (!nl_pat)
8863 return -ENOBUFS;
8864 pat_len = rule->patterns[j].pattern_len;
8865 if (nla_put(msg, NL80211_PKTPAT_MASK,
8866 DIV_ROUND_UP(pat_len, 8),
8867 rule->patterns[j].mask) ||
8868 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8869 rule->patterns[j].pattern) ||
8870 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8871 rule->patterns[j].pkt_offset))
8872 return -ENOBUFS;
8873 nla_nest_end(msg, nl_pat);
8874 }
8875 nla_nest_end(msg, nl_pats);
8876 nla_nest_end(msg, nl_rule);
8877 }
8878 nla_nest_end(msg, nl_rules);
8879
8880 return 0;
8881 }
8882
8883 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8884 {
8885 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8886 struct sk_buff *msg;
8887 void *hdr;
8888
8889 if (!rdev->wiphy.coalesce)
8890 return -EOPNOTSUPP;
8891
8892 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8893 if (!msg)
8894 return -ENOMEM;
8895
8896 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8897 NL80211_CMD_GET_COALESCE);
8898 if (!hdr)
8899 goto nla_put_failure;
8900
8901 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8902 goto nla_put_failure;
8903
8904 genlmsg_end(msg, hdr);
8905 return genlmsg_reply(msg, info);
8906
8907 nla_put_failure:
8908 nlmsg_free(msg);
8909 return -ENOBUFS;
8910 }
8911
8912 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8913 {
8914 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8915 int i, j;
8916 struct cfg80211_coalesce_rules *rule;
8917
8918 if (!coalesce)
8919 return;
8920
8921 for (i = 0; i < coalesce->n_rules; i++) {
8922 rule = &coalesce->rules[i];
8923 for (j = 0; j < rule->n_patterns; j++)
8924 kfree(rule->patterns[j].mask);
8925 kfree(rule->patterns);
8926 }
8927 kfree(coalesce->rules);
8928 kfree(coalesce);
8929 rdev->coalesce = NULL;
8930 }
8931
8932 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8933 struct nlattr *rule,
8934 struct cfg80211_coalesce_rules *new_rule)
8935 {
8936 int err, i;
8937 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8938 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8939 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8940 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8941
8942 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8943 nla_len(rule), nl80211_coalesce_policy);
8944 if (err)
8945 return err;
8946
8947 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8948 new_rule->delay =
8949 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8950 if (new_rule->delay > coalesce->max_delay)
8951 return -EINVAL;
8952
8953 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8954 new_rule->condition =
8955 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8956 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8957 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8958 return -EINVAL;
8959
8960 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8961 return -EINVAL;
8962
8963 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8964 rem)
8965 n_patterns++;
8966 if (n_patterns > coalesce->n_patterns)
8967 return -EINVAL;
8968
8969 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8970 GFP_KERNEL);
8971 if (!new_rule->patterns)
8972 return -ENOMEM;
8973
8974 new_rule->n_patterns = n_patterns;
8975 i = 0;
8976
8977 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8978 rem) {
8979 u8 *mask_pat;
8980
8981 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8982 nla_len(pat), NULL);
8983 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8984 !pat_tb[NL80211_PKTPAT_PATTERN])
8985 return -EINVAL;
8986 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8987 mask_len = DIV_ROUND_UP(pat_len, 8);
8988 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8989 return -EINVAL;
8990 if (pat_len > coalesce->pattern_max_len ||
8991 pat_len < coalesce->pattern_min_len)
8992 return -EINVAL;
8993
8994 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8995 pkt_offset = 0;
8996 else
8997 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8998 if (pkt_offset > coalesce->max_pkt_offset)
8999 return -EINVAL;
9000 new_rule->patterns[i].pkt_offset = pkt_offset;
9001
9002 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9003 if (!mask_pat)
9004 return -ENOMEM;
9005
9006 new_rule->patterns[i].mask = mask_pat;
9007 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9008 mask_len);
9009
9010 mask_pat += mask_len;
9011 new_rule->patterns[i].pattern = mask_pat;
9012 new_rule->patterns[i].pattern_len = pat_len;
9013 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9014 pat_len);
9015 i++;
9016 }
9017
9018 return 0;
9019 }
9020
9021 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9022 {
9023 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9024 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9025 struct cfg80211_coalesce new_coalesce = {};
9026 struct cfg80211_coalesce *n_coalesce;
9027 int err, rem_rule, n_rules = 0, i, j;
9028 struct nlattr *rule;
9029 struct cfg80211_coalesce_rules *tmp_rule;
9030
9031 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9032 return -EOPNOTSUPP;
9033
9034 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9035 cfg80211_rdev_free_coalesce(rdev);
9036 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9037 return 0;
9038 }
9039
9040 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9041 rem_rule)
9042 n_rules++;
9043 if (n_rules > coalesce->n_rules)
9044 return -EINVAL;
9045
9046 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9047 GFP_KERNEL);
9048 if (!new_coalesce.rules)
9049 return -ENOMEM;
9050
9051 new_coalesce.n_rules = n_rules;
9052 i = 0;
9053
9054 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9055 rem_rule) {
9056 err = nl80211_parse_coalesce_rule(rdev, rule,
9057 &new_coalesce.rules[i]);
9058 if (err)
9059 goto error;
9060
9061 i++;
9062 }
9063
9064 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9065 if (err)
9066 goto error;
9067
9068 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9069 if (!n_coalesce) {
9070 err = -ENOMEM;
9071 goto error;
9072 }
9073 cfg80211_rdev_free_coalesce(rdev);
9074 rdev->coalesce = n_coalesce;
9075
9076 return 0;
9077 error:
9078 for (i = 0; i < new_coalesce.n_rules; i++) {
9079 tmp_rule = &new_coalesce.rules[i];
9080 for (j = 0; j < tmp_rule->n_patterns; j++)
9081 kfree(tmp_rule->patterns[j].mask);
9082 kfree(tmp_rule->patterns);
9083 }
9084 kfree(new_coalesce.rules);
9085
9086 return err;
9087 }
9088
9089 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9090 {
9091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9092 struct net_device *dev = info->user_ptr[1];
9093 struct wireless_dev *wdev = dev->ieee80211_ptr;
9094 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9095 struct cfg80211_gtk_rekey_data rekey_data;
9096 int err;
9097
9098 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9099 return -EINVAL;
9100
9101 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9102 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9103 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9104 nl80211_rekey_policy);
9105 if (err)
9106 return err;
9107
9108 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9109 return -ERANGE;
9110 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9111 return -ERANGE;
9112 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9113 return -ERANGE;
9114
9115 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9116 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9117 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9118
9119 wdev_lock(wdev);
9120 if (!wdev->current_bss) {
9121 err = -ENOTCONN;
9122 goto out;
9123 }
9124
9125 if (!rdev->ops->set_rekey_data) {
9126 err = -EOPNOTSUPP;
9127 goto out;
9128 }
9129
9130 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9131 out:
9132 wdev_unlock(wdev);
9133 return err;
9134 }
9135
9136 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9137 struct genl_info *info)
9138 {
9139 struct net_device *dev = info->user_ptr[1];
9140 struct wireless_dev *wdev = dev->ieee80211_ptr;
9141
9142 if (wdev->iftype != NL80211_IFTYPE_AP &&
9143 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9144 return -EINVAL;
9145
9146 if (wdev->ap_unexpected_nlportid)
9147 return -EBUSY;
9148
9149 wdev->ap_unexpected_nlportid = info->snd_portid;
9150 return 0;
9151 }
9152
9153 static int nl80211_probe_client(struct sk_buff *skb,
9154 struct genl_info *info)
9155 {
9156 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9157 struct net_device *dev = info->user_ptr[1];
9158 struct wireless_dev *wdev = dev->ieee80211_ptr;
9159 struct sk_buff *msg;
9160 void *hdr;
9161 const u8 *addr;
9162 u64 cookie;
9163 int err;
9164
9165 if (wdev->iftype != NL80211_IFTYPE_AP &&
9166 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9167 return -EOPNOTSUPP;
9168
9169 if (!info->attrs[NL80211_ATTR_MAC])
9170 return -EINVAL;
9171
9172 if (!rdev->ops->probe_client)
9173 return -EOPNOTSUPP;
9174
9175 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9176 if (!msg)
9177 return -ENOMEM;
9178
9179 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9180 NL80211_CMD_PROBE_CLIENT);
9181 if (!hdr) {
9182 err = -ENOBUFS;
9183 goto free_msg;
9184 }
9185
9186 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9187
9188 err = rdev_probe_client(rdev, dev, addr, &cookie);
9189 if (err)
9190 goto free_msg;
9191
9192 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9193 goto nla_put_failure;
9194
9195 genlmsg_end(msg, hdr);
9196
9197 return genlmsg_reply(msg, info);
9198
9199 nla_put_failure:
9200 err = -ENOBUFS;
9201 free_msg:
9202 nlmsg_free(msg);
9203 return err;
9204 }
9205
9206 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9207 {
9208 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9209 struct cfg80211_beacon_registration *reg, *nreg;
9210 int rv;
9211
9212 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9213 return -EOPNOTSUPP;
9214
9215 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9216 if (!nreg)
9217 return -ENOMEM;
9218
9219 /* First, check if already registered. */
9220 spin_lock_bh(&rdev->beacon_registrations_lock);
9221 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9222 if (reg->nlportid == info->snd_portid) {
9223 rv = -EALREADY;
9224 goto out_err;
9225 }
9226 }
9227 /* Add it to the list */
9228 nreg->nlportid = info->snd_portid;
9229 list_add(&nreg->list, &rdev->beacon_registrations);
9230
9231 spin_unlock_bh(&rdev->beacon_registrations_lock);
9232
9233 return 0;
9234 out_err:
9235 spin_unlock_bh(&rdev->beacon_registrations_lock);
9236 kfree(nreg);
9237 return rv;
9238 }
9239
9240 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9241 {
9242 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9243 struct wireless_dev *wdev = info->user_ptr[1];
9244 int err;
9245
9246 if (!rdev->ops->start_p2p_device)
9247 return -EOPNOTSUPP;
9248
9249 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9250 return -EOPNOTSUPP;
9251
9252 if (wdev->p2p_started)
9253 return 0;
9254
9255 if (rfkill_blocked(rdev->rfkill))
9256 return -ERFKILL;
9257
9258 err = rdev_start_p2p_device(rdev, wdev);
9259 if (err)
9260 return err;
9261
9262 wdev->p2p_started = true;
9263 rdev->opencount++;
9264
9265 return 0;
9266 }
9267
9268 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9269 {
9270 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9271 struct wireless_dev *wdev = info->user_ptr[1];
9272
9273 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9274 return -EOPNOTSUPP;
9275
9276 if (!rdev->ops->stop_p2p_device)
9277 return -EOPNOTSUPP;
9278
9279 cfg80211_stop_p2p_device(rdev, wdev);
9280
9281 return 0;
9282 }
9283
9284 static int nl80211_get_protocol_features(struct sk_buff *skb,
9285 struct genl_info *info)
9286 {
9287 void *hdr;
9288 struct sk_buff *msg;
9289
9290 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9291 if (!msg)
9292 return -ENOMEM;
9293
9294 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9295 NL80211_CMD_GET_PROTOCOL_FEATURES);
9296 if (!hdr)
9297 goto nla_put_failure;
9298
9299 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9300 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9301 goto nla_put_failure;
9302
9303 genlmsg_end(msg, hdr);
9304 return genlmsg_reply(msg, info);
9305
9306 nla_put_failure:
9307 kfree_skb(msg);
9308 return -ENOBUFS;
9309 }
9310
9311 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9312 {
9313 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9314 struct cfg80211_update_ft_ies_params ft_params;
9315 struct net_device *dev = info->user_ptr[1];
9316
9317 if (!rdev->ops->update_ft_ies)
9318 return -EOPNOTSUPP;
9319
9320 if (!info->attrs[NL80211_ATTR_MDID] ||
9321 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9322 return -EINVAL;
9323
9324 memset(&ft_params, 0, sizeof(ft_params));
9325 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9326 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9327 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9328
9329 return rdev_update_ft_ies(rdev, dev, &ft_params);
9330 }
9331
9332 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9333 struct genl_info *info)
9334 {
9335 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9336 struct wireless_dev *wdev = info->user_ptr[1];
9337 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9338 u16 duration;
9339 int ret;
9340
9341 if (!rdev->ops->crit_proto_start)
9342 return -EOPNOTSUPP;
9343
9344 if (WARN_ON(!rdev->ops->crit_proto_stop))
9345 return -EINVAL;
9346
9347 if (rdev->crit_proto_nlportid)
9348 return -EBUSY;
9349
9350 /* determine protocol if provided */
9351 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9352 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9353
9354 if (proto >= NUM_NL80211_CRIT_PROTO)
9355 return -EINVAL;
9356
9357 /* timeout must be provided */
9358 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9359 return -EINVAL;
9360
9361 duration =
9362 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9363
9364 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9365 return -ERANGE;
9366
9367 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9368 if (!ret)
9369 rdev->crit_proto_nlportid = info->snd_portid;
9370
9371 return ret;
9372 }
9373
9374 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9375 struct genl_info *info)
9376 {
9377 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9378 struct wireless_dev *wdev = info->user_ptr[1];
9379
9380 if (!rdev->ops->crit_proto_stop)
9381 return -EOPNOTSUPP;
9382
9383 if (rdev->crit_proto_nlportid) {
9384 rdev->crit_proto_nlportid = 0;
9385 rdev_crit_proto_stop(rdev, wdev);
9386 }
9387 return 0;
9388 }
9389
9390 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9391 {
9392 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9393 struct wireless_dev *wdev =
9394 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9395 int i, err;
9396 u32 vid, subcmd;
9397
9398 if (!rdev->wiphy.vendor_commands)
9399 return -EOPNOTSUPP;
9400
9401 if (IS_ERR(wdev)) {
9402 err = PTR_ERR(wdev);
9403 if (err != -EINVAL)
9404 return err;
9405 wdev = NULL;
9406 } else if (wdev->wiphy != &rdev->wiphy) {
9407 return -EINVAL;
9408 }
9409
9410 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9411 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9412 return -EINVAL;
9413
9414 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9415 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9416 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9417 const struct wiphy_vendor_command *vcmd;
9418 void *data = NULL;
9419 int len = 0;
9420
9421 vcmd = &rdev->wiphy.vendor_commands[i];
9422
9423 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9424 continue;
9425
9426 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9427 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9428 if (!wdev)
9429 return -EINVAL;
9430 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9431 !wdev->netdev)
9432 return -EINVAL;
9433
9434 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9435 if (wdev->netdev &&
9436 !netif_running(wdev->netdev))
9437 return -ENETDOWN;
9438 if (!wdev->netdev && !wdev->p2p_started)
9439 return -ENETDOWN;
9440 }
9441 } else {
9442 wdev = NULL;
9443 }
9444
9445 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9446 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9447 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9448 }
9449
9450 rdev->cur_cmd_info = info;
9451 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9452 data, len);
9453 rdev->cur_cmd_info = NULL;
9454 return err;
9455 }
9456
9457 return -EOPNOTSUPP;
9458 }
9459
9460 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9461 enum nl80211_commands cmd,
9462 enum nl80211_attrs attr,
9463 int approxlen)
9464 {
9465 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9466
9467 if (WARN_ON(!rdev->cur_cmd_info))
9468 return NULL;
9469
9470 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9471 rdev->cur_cmd_info->snd_portid,
9472 rdev->cur_cmd_info->snd_seq,
9473 cmd, attr, NULL, GFP_KERNEL);
9474 }
9475 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9476
9477 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9478 {
9479 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9480 void *hdr = ((void **)skb->cb)[1];
9481 struct nlattr *data = ((void **)skb->cb)[2];
9482
9483 /* clear CB data for netlink core to own from now on */
9484 memset(skb->cb, 0, sizeof(skb->cb));
9485
9486 if (WARN_ON(!rdev->cur_cmd_info)) {
9487 kfree_skb(skb);
9488 return -EINVAL;
9489 }
9490
9491 nla_nest_end(skb, data);
9492 genlmsg_end(skb, hdr);
9493 return genlmsg_reply(skb, rdev->cur_cmd_info);
9494 }
9495 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9496
9497
9498 static int nl80211_set_qos_map(struct sk_buff *skb,
9499 struct genl_info *info)
9500 {
9501 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9502 struct cfg80211_qos_map *qos_map = NULL;
9503 struct net_device *dev = info->user_ptr[1];
9504 u8 *pos, len, num_des, des_len, des;
9505 int ret;
9506
9507 if (!rdev->ops->set_qos_map)
9508 return -EOPNOTSUPP;
9509
9510 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9511 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9512 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9513
9514 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9515 len > IEEE80211_QOS_MAP_LEN_MAX)
9516 return -EINVAL;
9517
9518 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9519 if (!qos_map)
9520 return -ENOMEM;
9521
9522 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9523 if (num_des) {
9524 des_len = num_des *
9525 sizeof(struct cfg80211_dscp_exception);
9526 memcpy(qos_map->dscp_exception, pos, des_len);
9527 qos_map->num_des = num_des;
9528 for (des = 0; des < num_des; des++) {
9529 if (qos_map->dscp_exception[des].up > 7) {
9530 kfree(qos_map);
9531 return -EINVAL;
9532 }
9533 }
9534 pos += des_len;
9535 }
9536 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9537 }
9538
9539 wdev_lock(dev->ieee80211_ptr);
9540 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9541 if (!ret)
9542 ret = rdev_set_qos_map(rdev, dev, qos_map);
9543 wdev_unlock(dev->ieee80211_ptr);
9544
9545 kfree(qos_map);
9546 return ret;
9547 }
9548
9549 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9550 {
9551 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9552 struct net_device *dev = info->user_ptr[1];
9553 struct wireless_dev *wdev = dev->ieee80211_ptr;
9554 const u8 *peer;
9555 u8 tsid, up;
9556 u16 admitted_time = 0;
9557 int err;
9558
9559 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9560 return -EOPNOTSUPP;
9561
9562 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9563 !info->attrs[NL80211_ATTR_USER_PRIO])
9564 return -EINVAL;
9565
9566 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9567 if (tsid >= IEEE80211_NUM_TIDS)
9568 return -EINVAL;
9569
9570 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9571 if (up >= IEEE80211_NUM_UPS)
9572 return -EINVAL;
9573
9574 /* WMM uses TIDs 0-7 even for TSPEC */
9575 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9576 /* TODO: handle 802.11 TSPEC/admission control
9577 * need more attributes for that (e.g. BA session requirement);
9578 * change the WMM adminssion test above to allow both then
9579 */
9580 return -EINVAL;
9581 }
9582
9583 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9584
9585 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9586 admitted_time =
9587 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9588 if (!admitted_time)
9589 return -EINVAL;
9590 }
9591
9592 wdev_lock(wdev);
9593 switch (wdev->iftype) {
9594 case NL80211_IFTYPE_STATION:
9595 case NL80211_IFTYPE_P2P_CLIENT:
9596 if (wdev->current_bss)
9597 break;
9598 err = -ENOTCONN;
9599 goto out;
9600 default:
9601 err = -EOPNOTSUPP;
9602 goto out;
9603 }
9604
9605 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9606
9607 out:
9608 wdev_unlock(wdev);
9609 return err;
9610 }
9611
9612 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9613 {
9614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9615 struct net_device *dev = info->user_ptr[1];
9616 struct wireless_dev *wdev = dev->ieee80211_ptr;
9617 const u8 *peer;
9618 u8 tsid;
9619 int err;
9620
9621 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9622 return -EINVAL;
9623
9624 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9625 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9626
9627 wdev_lock(wdev);
9628 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9629 wdev_unlock(wdev);
9630
9631 return err;
9632 }
9633
9634 #define NL80211_FLAG_NEED_WIPHY 0x01
9635 #define NL80211_FLAG_NEED_NETDEV 0x02
9636 #define NL80211_FLAG_NEED_RTNL 0x04
9637 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9638 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9639 NL80211_FLAG_CHECK_NETDEV_UP)
9640 #define NL80211_FLAG_NEED_WDEV 0x10
9641 /* If a netdev is associated, it must be UP, P2P must be started */
9642 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9643 NL80211_FLAG_CHECK_NETDEV_UP)
9644 #define NL80211_FLAG_CLEAR_SKB 0x20
9645
9646 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9647 struct genl_info *info)
9648 {
9649 struct cfg80211_registered_device *rdev;
9650 struct wireless_dev *wdev;
9651 struct net_device *dev;
9652 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9653
9654 if (rtnl)
9655 rtnl_lock();
9656
9657 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9658 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9659 if (IS_ERR(rdev)) {
9660 if (rtnl)
9661 rtnl_unlock();
9662 return PTR_ERR(rdev);
9663 }
9664 info->user_ptr[0] = rdev;
9665 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9666 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9667 ASSERT_RTNL();
9668
9669 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9670 info->attrs);
9671 if (IS_ERR(wdev)) {
9672 if (rtnl)
9673 rtnl_unlock();
9674 return PTR_ERR(wdev);
9675 }
9676
9677 dev = wdev->netdev;
9678 rdev = wiphy_to_rdev(wdev->wiphy);
9679
9680 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9681 if (!dev) {
9682 if (rtnl)
9683 rtnl_unlock();
9684 return -EINVAL;
9685 }
9686
9687 info->user_ptr[1] = dev;
9688 } else {
9689 info->user_ptr[1] = wdev;
9690 }
9691
9692 if (dev) {
9693 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9694 !netif_running(dev)) {
9695 if (rtnl)
9696 rtnl_unlock();
9697 return -ENETDOWN;
9698 }
9699
9700 dev_hold(dev);
9701 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9702 if (!wdev->p2p_started) {
9703 if (rtnl)
9704 rtnl_unlock();
9705 return -ENETDOWN;
9706 }
9707 }
9708
9709 info->user_ptr[0] = rdev;
9710 }
9711
9712 return 0;
9713 }
9714
9715 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9716 struct genl_info *info)
9717 {
9718 if (info->user_ptr[1]) {
9719 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9720 struct wireless_dev *wdev = info->user_ptr[1];
9721
9722 if (wdev->netdev)
9723 dev_put(wdev->netdev);
9724 } else {
9725 dev_put(info->user_ptr[1]);
9726 }
9727 }
9728
9729 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9730 rtnl_unlock();
9731
9732 /* If needed, clear the netlink message payload from the SKB
9733 * as it might contain key data that shouldn't stick around on
9734 * the heap after the SKB is freed. The netlink message header
9735 * is still needed for further processing, so leave it intact.
9736 */
9737 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
9738 struct nlmsghdr *nlh = nlmsg_hdr(skb);
9739
9740 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
9741 }
9742 }
9743
9744 static const struct genl_ops nl80211_ops[] = {
9745 {
9746 .cmd = NL80211_CMD_GET_WIPHY,
9747 .doit = nl80211_get_wiphy,
9748 .dumpit = nl80211_dump_wiphy,
9749 .done = nl80211_dump_wiphy_done,
9750 .policy = nl80211_policy,
9751 /* can be retrieved by unprivileged users */
9752 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9753 NL80211_FLAG_NEED_RTNL,
9754 },
9755 {
9756 .cmd = NL80211_CMD_SET_WIPHY,
9757 .doit = nl80211_set_wiphy,
9758 .policy = nl80211_policy,
9759 .flags = GENL_ADMIN_PERM,
9760 .internal_flags = NL80211_FLAG_NEED_RTNL,
9761 },
9762 {
9763 .cmd = NL80211_CMD_GET_INTERFACE,
9764 .doit = nl80211_get_interface,
9765 .dumpit = nl80211_dump_interface,
9766 .policy = nl80211_policy,
9767 /* can be retrieved by unprivileged users */
9768 .internal_flags = NL80211_FLAG_NEED_WDEV |
9769 NL80211_FLAG_NEED_RTNL,
9770 },
9771 {
9772 .cmd = NL80211_CMD_SET_INTERFACE,
9773 .doit = nl80211_set_interface,
9774 .policy = nl80211_policy,
9775 .flags = GENL_ADMIN_PERM,
9776 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9777 NL80211_FLAG_NEED_RTNL,
9778 },
9779 {
9780 .cmd = NL80211_CMD_NEW_INTERFACE,
9781 .doit = nl80211_new_interface,
9782 .policy = nl80211_policy,
9783 .flags = GENL_ADMIN_PERM,
9784 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9785 NL80211_FLAG_NEED_RTNL,
9786 },
9787 {
9788 .cmd = NL80211_CMD_DEL_INTERFACE,
9789 .doit = nl80211_del_interface,
9790 .policy = nl80211_policy,
9791 .flags = GENL_ADMIN_PERM,
9792 .internal_flags = NL80211_FLAG_NEED_WDEV |
9793 NL80211_FLAG_NEED_RTNL,
9794 },
9795 {
9796 .cmd = NL80211_CMD_GET_KEY,
9797 .doit = nl80211_get_key,
9798 .policy = nl80211_policy,
9799 .flags = GENL_ADMIN_PERM,
9800 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9801 NL80211_FLAG_NEED_RTNL,
9802 },
9803 {
9804 .cmd = NL80211_CMD_SET_KEY,
9805 .doit = nl80211_set_key,
9806 .policy = nl80211_policy,
9807 .flags = GENL_ADMIN_PERM,
9808 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9809 NL80211_FLAG_NEED_RTNL |
9810 NL80211_FLAG_CLEAR_SKB,
9811 },
9812 {
9813 .cmd = NL80211_CMD_NEW_KEY,
9814 .doit = nl80211_new_key,
9815 .policy = nl80211_policy,
9816 .flags = GENL_ADMIN_PERM,
9817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9818 NL80211_FLAG_NEED_RTNL |
9819 NL80211_FLAG_CLEAR_SKB,
9820 },
9821 {
9822 .cmd = NL80211_CMD_DEL_KEY,
9823 .doit = nl80211_del_key,
9824 .policy = nl80211_policy,
9825 .flags = GENL_ADMIN_PERM,
9826 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9827 NL80211_FLAG_NEED_RTNL,
9828 },
9829 {
9830 .cmd = NL80211_CMD_SET_BEACON,
9831 .policy = nl80211_policy,
9832 .flags = GENL_ADMIN_PERM,
9833 .doit = nl80211_set_beacon,
9834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9835 NL80211_FLAG_NEED_RTNL,
9836 },
9837 {
9838 .cmd = NL80211_CMD_START_AP,
9839 .policy = nl80211_policy,
9840 .flags = GENL_ADMIN_PERM,
9841 .doit = nl80211_start_ap,
9842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9843 NL80211_FLAG_NEED_RTNL,
9844 },
9845 {
9846 .cmd = NL80211_CMD_STOP_AP,
9847 .policy = nl80211_policy,
9848 .flags = GENL_ADMIN_PERM,
9849 .doit = nl80211_stop_ap,
9850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9851 NL80211_FLAG_NEED_RTNL,
9852 },
9853 {
9854 .cmd = NL80211_CMD_GET_STATION,
9855 .doit = nl80211_get_station,
9856 .dumpit = nl80211_dump_station,
9857 .policy = nl80211_policy,
9858 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9859 NL80211_FLAG_NEED_RTNL,
9860 },
9861 {
9862 .cmd = NL80211_CMD_SET_STATION,
9863 .doit = nl80211_set_station,
9864 .policy = nl80211_policy,
9865 .flags = GENL_ADMIN_PERM,
9866 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9867 NL80211_FLAG_NEED_RTNL,
9868 },
9869 {
9870 .cmd = NL80211_CMD_NEW_STATION,
9871 .doit = nl80211_new_station,
9872 .policy = nl80211_policy,
9873 .flags = GENL_ADMIN_PERM,
9874 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9875 NL80211_FLAG_NEED_RTNL,
9876 },
9877 {
9878 .cmd = NL80211_CMD_DEL_STATION,
9879 .doit = nl80211_del_station,
9880 .policy = nl80211_policy,
9881 .flags = GENL_ADMIN_PERM,
9882 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9883 NL80211_FLAG_NEED_RTNL,
9884 },
9885 {
9886 .cmd = NL80211_CMD_GET_MPATH,
9887 .doit = nl80211_get_mpath,
9888 .dumpit = nl80211_dump_mpath,
9889 .policy = nl80211_policy,
9890 .flags = GENL_ADMIN_PERM,
9891 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9892 NL80211_FLAG_NEED_RTNL,
9893 },
9894 {
9895 .cmd = NL80211_CMD_GET_MPP,
9896 .doit = nl80211_get_mpp,
9897 .dumpit = nl80211_dump_mpp,
9898 .policy = nl80211_policy,
9899 .flags = GENL_ADMIN_PERM,
9900 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9901 NL80211_FLAG_NEED_RTNL,
9902 },
9903 {
9904 .cmd = NL80211_CMD_SET_MPATH,
9905 .doit = nl80211_set_mpath,
9906 .policy = nl80211_policy,
9907 .flags = GENL_ADMIN_PERM,
9908 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9909 NL80211_FLAG_NEED_RTNL,
9910 },
9911 {
9912 .cmd = NL80211_CMD_NEW_MPATH,
9913 .doit = nl80211_new_mpath,
9914 .policy = nl80211_policy,
9915 .flags = GENL_ADMIN_PERM,
9916 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9917 NL80211_FLAG_NEED_RTNL,
9918 },
9919 {
9920 .cmd = NL80211_CMD_DEL_MPATH,
9921 .doit = nl80211_del_mpath,
9922 .policy = nl80211_policy,
9923 .flags = GENL_ADMIN_PERM,
9924 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9925 NL80211_FLAG_NEED_RTNL,
9926 },
9927 {
9928 .cmd = NL80211_CMD_SET_BSS,
9929 .doit = nl80211_set_bss,
9930 .policy = nl80211_policy,
9931 .flags = GENL_ADMIN_PERM,
9932 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9933 NL80211_FLAG_NEED_RTNL,
9934 },
9935 {
9936 .cmd = NL80211_CMD_GET_REG,
9937 .doit = nl80211_get_reg,
9938 .policy = nl80211_policy,
9939 .internal_flags = NL80211_FLAG_NEED_RTNL,
9940 /* can be retrieved by unprivileged users */
9941 },
9942 {
9943 .cmd = NL80211_CMD_SET_REG,
9944 .doit = nl80211_set_reg,
9945 .policy = nl80211_policy,
9946 .flags = GENL_ADMIN_PERM,
9947 .internal_flags = NL80211_FLAG_NEED_RTNL,
9948 },
9949 {
9950 .cmd = NL80211_CMD_REQ_SET_REG,
9951 .doit = nl80211_req_set_reg,
9952 .policy = nl80211_policy,
9953 .flags = GENL_ADMIN_PERM,
9954 },
9955 {
9956 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9957 .doit = nl80211_get_mesh_config,
9958 .policy = nl80211_policy,
9959 /* can be retrieved by unprivileged users */
9960 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9961 NL80211_FLAG_NEED_RTNL,
9962 },
9963 {
9964 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9965 .doit = nl80211_update_mesh_config,
9966 .policy = nl80211_policy,
9967 .flags = GENL_ADMIN_PERM,
9968 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9969 NL80211_FLAG_NEED_RTNL,
9970 },
9971 {
9972 .cmd = NL80211_CMD_TRIGGER_SCAN,
9973 .doit = nl80211_trigger_scan,
9974 .policy = nl80211_policy,
9975 .flags = GENL_ADMIN_PERM,
9976 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9977 NL80211_FLAG_NEED_RTNL,
9978 },
9979 {
9980 .cmd = NL80211_CMD_GET_SCAN,
9981 .policy = nl80211_policy,
9982 .dumpit = nl80211_dump_scan,
9983 },
9984 {
9985 .cmd = NL80211_CMD_START_SCHED_SCAN,
9986 .doit = nl80211_start_sched_scan,
9987 .policy = nl80211_policy,
9988 .flags = GENL_ADMIN_PERM,
9989 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9990 NL80211_FLAG_NEED_RTNL,
9991 },
9992 {
9993 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9994 .doit = nl80211_stop_sched_scan,
9995 .policy = nl80211_policy,
9996 .flags = GENL_ADMIN_PERM,
9997 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9998 NL80211_FLAG_NEED_RTNL,
9999 },
10000 {
10001 .cmd = NL80211_CMD_AUTHENTICATE,
10002 .doit = nl80211_authenticate,
10003 .policy = nl80211_policy,
10004 .flags = GENL_ADMIN_PERM,
10005 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10006 NL80211_FLAG_NEED_RTNL |
10007 NL80211_FLAG_CLEAR_SKB,
10008 },
10009 {
10010 .cmd = NL80211_CMD_ASSOCIATE,
10011 .doit = nl80211_associate,
10012 .policy = nl80211_policy,
10013 .flags = GENL_ADMIN_PERM,
10014 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10015 NL80211_FLAG_NEED_RTNL,
10016 },
10017 {
10018 .cmd = NL80211_CMD_DEAUTHENTICATE,
10019 .doit = nl80211_deauthenticate,
10020 .policy = nl80211_policy,
10021 .flags = GENL_ADMIN_PERM,
10022 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10023 NL80211_FLAG_NEED_RTNL,
10024 },
10025 {
10026 .cmd = NL80211_CMD_DISASSOCIATE,
10027 .doit = nl80211_disassociate,
10028 .policy = nl80211_policy,
10029 .flags = GENL_ADMIN_PERM,
10030 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10031 NL80211_FLAG_NEED_RTNL,
10032 },
10033 {
10034 .cmd = NL80211_CMD_JOIN_IBSS,
10035 .doit = nl80211_join_ibss,
10036 .policy = nl80211_policy,
10037 .flags = GENL_ADMIN_PERM,
10038 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10039 NL80211_FLAG_NEED_RTNL,
10040 },
10041 {
10042 .cmd = NL80211_CMD_LEAVE_IBSS,
10043 .doit = nl80211_leave_ibss,
10044 .policy = nl80211_policy,
10045 .flags = GENL_ADMIN_PERM,
10046 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10047 NL80211_FLAG_NEED_RTNL,
10048 },
10049 #ifdef CONFIG_NL80211_TESTMODE
10050 {
10051 .cmd = NL80211_CMD_TESTMODE,
10052 .doit = nl80211_testmode_do,
10053 .dumpit = nl80211_testmode_dump,
10054 .policy = nl80211_policy,
10055 .flags = GENL_ADMIN_PERM,
10056 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10057 NL80211_FLAG_NEED_RTNL,
10058 },
10059 #endif
10060 {
10061 .cmd = NL80211_CMD_CONNECT,
10062 .doit = nl80211_connect,
10063 .policy = nl80211_policy,
10064 .flags = GENL_ADMIN_PERM,
10065 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10066 NL80211_FLAG_NEED_RTNL,
10067 },
10068 {
10069 .cmd = NL80211_CMD_DISCONNECT,
10070 .doit = nl80211_disconnect,
10071 .policy = nl80211_policy,
10072 .flags = GENL_ADMIN_PERM,
10073 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10074 NL80211_FLAG_NEED_RTNL,
10075 },
10076 {
10077 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10078 .doit = nl80211_wiphy_netns,
10079 .policy = nl80211_policy,
10080 .flags = GENL_ADMIN_PERM,
10081 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10082 NL80211_FLAG_NEED_RTNL,
10083 },
10084 {
10085 .cmd = NL80211_CMD_GET_SURVEY,
10086 .policy = nl80211_policy,
10087 .dumpit = nl80211_dump_survey,
10088 },
10089 {
10090 .cmd = NL80211_CMD_SET_PMKSA,
10091 .doit = nl80211_setdel_pmksa,
10092 .policy = nl80211_policy,
10093 .flags = GENL_ADMIN_PERM,
10094 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10095 NL80211_FLAG_NEED_RTNL,
10096 },
10097 {
10098 .cmd = NL80211_CMD_DEL_PMKSA,
10099 .doit = nl80211_setdel_pmksa,
10100 .policy = nl80211_policy,
10101 .flags = GENL_ADMIN_PERM,
10102 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10103 NL80211_FLAG_NEED_RTNL,
10104 },
10105 {
10106 .cmd = NL80211_CMD_FLUSH_PMKSA,
10107 .doit = nl80211_flush_pmksa,
10108 .policy = nl80211_policy,
10109 .flags = GENL_ADMIN_PERM,
10110 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10111 NL80211_FLAG_NEED_RTNL,
10112 },
10113 {
10114 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10115 .doit = nl80211_remain_on_channel,
10116 .policy = nl80211_policy,
10117 .flags = GENL_ADMIN_PERM,
10118 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10119 NL80211_FLAG_NEED_RTNL,
10120 },
10121 {
10122 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10123 .doit = nl80211_cancel_remain_on_channel,
10124 .policy = nl80211_policy,
10125 .flags = GENL_ADMIN_PERM,
10126 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10127 NL80211_FLAG_NEED_RTNL,
10128 },
10129 {
10130 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10131 .doit = nl80211_set_tx_bitrate_mask,
10132 .policy = nl80211_policy,
10133 .flags = GENL_ADMIN_PERM,
10134 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10135 NL80211_FLAG_NEED_RTNL,
10136 },
10137 {
10138 .cmd = NL80211_CMD_REGISTER_FRAME,
10139 .doit = nl80211_register_mgmt,
10140 .policy = nl80211_policy,
10141 .flags = GENL_ADMIN_PERM,
10142 .internal_flags = NL80211_FLAG_NEED_WDEV |
10143 NL80211_FLAG_NEED_RTNL,
10144 },
10145 {
10146 .cmd = NL80211_CMD_FRAME,
10147 .doit = nl80211_tx_mgmt,
10148 .policy = nl80211_policy,
10149 .flags = GENL_ADMIN_PERM,
10150 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10151 NL80211_FLAG_NEED_RTNL,
10152 },
10153 {
10154 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10155 .doit = nl80211_tx_mgmt_cancel_wait,
10156 .policy = nl80211_policy,
10157 .flags = GENL_ADMIN_PERM,
10158 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10159 NL80211_FLAG_NEED_RTNL,
10160 },
10161 {
10162 .cmd = NL80211_CMD_SET_POWER_SAVE,
10163 .doit = nl80211_set_power_save,
10164 .policy = nl80211_policy,
10165 .flags = GENL_ADMIN_PERM,
10166 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10167 NL80211_FLAG_NEED_RTNL,
10168 },
10169 {
10170 .cmd = NL80211_CMD_GET_POWER_SAVE,
10171 .doit = nl80211_get_power_save,
10172 .policy = nl80211_policy,
10173 /* can be retrieved by unprivileged users */
10174 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10175 NL80211_FLAG_NEED_RTNL,
10176 },
10177 {
10178 .cmd = NL80211_CMD_SET_CQM,
10179 .doit = nl80211_set_cqm,
10180 .policy = nl80211_policy,
10181 .flags = GENL_ADMIN_PERM,
10182 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10183 NL80211_FLAG_NEED_RTNL,
10184 },
10185 {
10186 .cmd = NL80211_CMD_SET_CHANNEL,
10187 .doit = nl80211_set_channel,
10188 .policy = nl80211_policy,
10189 .flags = GENL_ADMIN_PERM,
10190 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10191 NL80211_FLAG_NEED_RTNL,
10192 },
10193 {
10194 .cmd = NL80211_CMD_SET_WDS_PEER,
10195 .doit = nl80211_set_wds_peer,
10196 .policy = nl80211_policy,
10197 .flags = GENL_ADMIN_PERM,
10198 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10199 NL80211_FLAG_NEED_RTNL,
10200 },
10201 {
10202 .cmd = NL80211_CMD_JOIN_MESH,
10203 .doit = nl80211_join_mesh,
10204 .policy = nl80211_policy,
10205 .flags = GENL_ADMIN_PERM,
10206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10207 NL80211_FLAG_NEED_RTNL,
10208 },
10209 {
10210 .cmd = NL80211_CMD_LEAVE_MESH,
10211 .doit = nl80211_leave_mesh,
10212 .policy = nl80211_policy,
10213 .flags = GENL_ADMIN_PERM,
10214 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10215 NL80211_FLAG_NEED_RTNL,
10216 },
10217 #ifdef CONFIG_PM
10218 {
10219 .cmd = NL80211_CMD_GET_WOWLAN,
10220 .doit = nl80211_get_wowlan,
10221 .policy = nl80211_policy,
10222 /* can be retrieved by unprivileged users */
10223 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10224 NL80211_FLAG_NEED_RTNL,
10225 },
10226 {
10227 .cmd = NL80211_CMD_SET_WOWLAN,
10228 .doit = nl80211_set_wowlan,
10229 .policy = nl80211_policy,
10230 .flags = GENL_ADMIN_PERM,
10231 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10232 NL80211_FLAG_NEED_RTNL,
10233 },
10234 #endif
10235 {
10236 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10237 .doit = nl80211_set_rekey_data,
10238 .policy = nl80211_policy,
10239 .flags = GENL_ADMIN_PERM,
10240 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10241 NL80211_FLAG_NEED_RTNL |
10242 NL80211_FLAG_CLEAR_SKB,
10243 },
10244 {
10245 .cmd = NL80211_CMD_TDLS_MGMT,
10246 .doit = nl80211_tdls_mgmt,
10247 .policy = nl80211_policy,
10248 .flags = GENL_ADMIN_PERM,
10249 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10250 NL80211_FLAG_NEED_RTNL,
10251 },
10252 {
10253 .cmd = NL80211_CMD_TDLS_OPER,
10254 .doit = nl80211_tdls_oper,
10255 .policy = nl80211_policy,
10256 .flags = GENL_ADMIN_PERM,
10257 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10258 NL80211_FLAG_NEED_RTNL,
10259 },
10260 {
10261 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10262 .doit = nl80211_register_unexpected_frame,
10263 .policy = nl80211_policy,
10264 .flags = GENL_ADMIN_PERM,
10265 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10266 NL80211_FLAG_NEED_RTNL,
10267 },
10268 {
10269 .cmd = NL80211_CMD_PROBE_CLIENT,
10270 .doit = nl80211_probe_client,
10271 .policy = nl80211_policy,
10272 .flags = GENL_ADMIN_PERM,
10273 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10274 NL80211_FLAG_NEED_RTNL,
10275 },
10276 {
10277 .cmd = NL80211_CMD_REGISTER_BEACONS,
10278 .doit = nl80211_register_beacons,
10279 .policy = nl80211_policy,
10280 .flags = GENL_ADMIN_PERM,
10281 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10282 NL80211_FLAG_NEED_RTNL,
10283 },
10284 {
10285 .cmd = NL80211_CMD_SET_NOACK_MAP,
10286 .doit = nl80211_set_noack_map,
10287 .policy = nl80211_policy,
10288 .flags = GENL_ADMIN_PERM,
10289 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10290 NL80211_FLAG_NEED_RTNL,
10291 },
10292 {
10293 .cmd = NL80211_CMD_START_P2P_DEVICE,
10294 .doit = nl80211_start_p2p_device,
10295 .policy = nl80211_policy,
10296 .flags = GENL_ADMIN_PERM,
10297 .internal_flags = NL80211_FLAG_NEED_WDEV |
10298 NL80211_FLAG_NEED_RTNL,
10299 },
10300 {
10301 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10302 .doit = nl80211_stop_p2p_device,
10303 .policy = nl80211_policy,
10304 .flags = GENL_ADMIN_PERM,
10305 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10306 NL80211_FLAG_NEED_RTNL,
10307 },
10308 {
10309 .cmd = NL80211_CMD_SET_MCAST_RATE,
10310 .doit = nl80211_set_mcast_rate,
10311 .policy = nl80211_policy,
10312 .flags = GENL_ADMIN_PERM,
10313 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10314 NL80211_FLAG_NEED_RTNL,
10315 },
10316 {
10317 .cmd = NL80211_CMD_SET_MAC_ACL,
10318 .doit = nl80211_set_mac_acl,
10319 .policy = nl80211_policy,
10320 .flags = GENL_ADMIN_PERM,
10321 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10322 NL80211_FLAG_NEED_RTNL,
10323 },
10324 {
10325 .cmd = NL80211_CMD_RADAR_DETECT,
10326 .doit = nl80211_start_radar_detection,
10327 .policy = nl80211_policy,
10328 .flags = GENL_ADMIN_PERM,
10329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10330 NL80211_FLAG_NEED_RTNL,
10331 },
10332 {
10333 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10334 .doit = nl80211_get_protocol_features,
10335 .policy = nl80211_policy,
10336 },
10337 {
10338 .cmd = NL80211_CMD_UPDATE_FT_IES,
10339 .doit = nl80211_update_ft_ies,
10340 .policy = nl80211_policy,
10341 .flags = GENL_ADMIN_PERM,
10342 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10343 NL80211_FLAG_NEED_RTNL,
10344 },
10345 {
10346 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10347 .doit = nl80211_crit_protocol_start,
10348 .policy = nl80211_policy,
10349 .flags = GENL_ADMIN_PERM,
10350 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10351 NL80211_FLAG_NEED_RTNL,
10352 },
10353 {
10354 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10355 .doit = nl80211_crit_protocol_stop,
10356 .policy = nl80211_policy,
10357 .flags = GENL_ADMIN_PERM,
10358 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10359 NL80211_FLAG_NEED_RTNL,
10360 },
10361 {
10362 .cmd = NL80211_CMD_GET_COALESCE,
10363 .doit = nl80211_get_coalesce,
10364 .policy = nl80211_policy,
10365 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10366 NL80211_FLAG_NEED_RTNL,
10367 },
10368 {
10369 .cmd = NL80211_CMD_SET_COALESCE,
10370 .doit = nl80211_set_coalesce,
10371 .policy = nl80211_policy,
10372 .flags = GENL_ADMIN_PERM,
10373 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10374 NL80211_FLAG_NEED_RTNL,
10375 },
10376 {
10377 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10378 .doit = nl80211_channel_switch,
10379 .policy = nl80211_policy,
10380 .flags = GENL_ADMIN_PERM,
10381 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10382 NL80211_FLAG_NEED_RTNL,
10383 },
10384 {
10385 .cmd = NL80211_CMD_VENDOR,
10386 .doit = nl80211_vendor_cmd,
10387 .policy = nl80211_policy,
10388 .flags = GENL_ADMIN_PERM,
10389 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10390 NL80211_FLAG_NEED_RTNL,
10391 },
10392 {
10393 .cmd = NL80211_CMD_SET_QOS_MAP,
10394 .doit = nl80211_set_qos_map,
10395 .policy = nl80211_policy,
10396 .flags = GENL_ADMIN_PERM,
10397 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10398 NL80211_FLAG_NEED_RTNL,
10399 },
10400 {
10401 .cmd = NL80211_CMD_ADD_TX_TS,
10402 .doit = nl80211_add_tx_ts,
10403 .policy = nl80211_policy,
10404 .flags = GENL_ADMIN_PERM,
10405 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10406 NL80211_FLAG_NEED_RTNL,
10407 },
10408 {
10409 .cmd = NL80211_CMD_DEL_TX_TS,
10410 .doit = nl80211_del_tx_ts,
10411 .policy = nl80211_policy,
10412 .flags = GENL_ADMIN_PERM,
10413 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10414 NL80211_FLAG_NEED_RTNL,
10415 },
10416 };
10417
10418 /* notification functions */
10419
10420 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10421 enum nl80211_commands cmd)
10422 {
10423 struct sk_buff *msg;
10424 struct nl80211_dump_wiphy_state state = {};
10425
10426 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10427 cmd != NL80211_CMD_DEL_WIPHY);
10428
10429 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10430 if (!msg)
10431 return;
10432
10433 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10434 nlmsg_free(msg);
10435 return;
10436 }
10437
10438 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10439 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10440 }
10441
10442 static int nl80211_add_scan_req(struct sk_buff *msg,
10443 struct cfg80211_registered_device *rdev)
10444 {
10445 struct cfg80211_scan_request *req = rdev->scan_req;
10446 struct nlattr *nest;
10447 int i;
10448
10449 if (WARN_ON(!req))
10450 return 0;
10451
10452 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10453 if (!nest)
10454 goto nla_put_failure;
10455 for (i = 0; i < req->n_ssids; i++) {
10456 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10457 goto nla_put_failure;
10458 }
10459 nla_nest_end(msg, nest);
10460
10461 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10462 if (!nest)
10463 goto nla_put_failure;
10464 for (i = 0; i < req->n_channels; i++) {
10465 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10466 goto nla_put_failure;
10467 }
10468 nla_nest_end(msg, nest);
10469
10470 if (req->ie &&
10471 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10472 goto nla_put_failure;
10473
10474 if (req->flags &&
10475 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10476 goto nla_put_failure;
10477
10478 return 0;
10479 nla_put_failure:
10480 return -ENOBUFS;
10481 }
10482
10483 static int nl80211_send_scan_msg(struct sk_buff *msg,
10484 struct cfg80211_registered_device *rdev,
10485 struct wireless_dev *wdev,
10486 u32 portid, u32 seq, int flags,
10487 u32 cmd)
10488 {
10489 void *hdr;
10490
10491 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10492 if (!hdr)
10493 return -1;
10494
10495 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10496 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10497 wdev->netdev->ifindex)) ||
10498 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10499 goto nla_put_failure;
10500
10501 /* ignore errors and send incomplete event anyway */
10502 nl80211_add_scan_req(msg, rdev);
10503
10504 return genlmsg_end(msg, hdr);
10505
10506 nla_put_failure:
10507 genlmsg_cancel(msg, hdr);
10508 return -EMSGSIZE;
10509 }
10510
10511 static int
10512 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10513 struct cfg80211_registered_device *rdev,
10514 struct net_device *netdev,
10515 u32 portid, u32 seq, int flags, u32 cmd)
10516 {
10517 void *hdr;
10518
10519 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10520 if (!hdr)
10521 return -1;
10522
10523 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10524 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10525 goto nla_put_failure;
10526
10527 return genlmsg_end(msg, hdr);
10528
10529 nla_put_failure:
10530 genlmsg_cancel(msg, hdr);
10531 return -EMSGSIZE;
10532 }
10533
10534 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10535 struct wireless_dev *wdev)
10536 {
10537 struct sk_buff *msg;
10538
10539 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10540 if (!msg)
10541 return;
10542
10543 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10544 NL80211_CMD_TRIGGER_SCAN) < 0) {
10545 nlmsg_free(msg);
10546 return;
10547 }
10548
10549 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10550 NL80211_MCGRP_SCAN, GFP_KERNEL);
10551 }
10552
10553 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10554 struct wireless_dev *wdev, bool aborted)
10555 {
10556 struct sk_buff *msg;
10557
10558 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10559 if (!msg)
10560 return NULL;
10561
10562 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10563 aborted ? NL80211_CMD_SCAN_ABORTED :
10564 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10565 nlmsg_free(msg);
10566 return NULL;
10567 }
10568
10569 return msg;
10570 }
10571
10572 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10573 struct sk_buff *msg)
10574 {
10575 if (!msg)
10576 return;
10577
10578 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10579 NL80211_MCGRP_SCAN, GFP_KERNEL);
10580 }
10581
10582 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10583 struct net_device *netdev)
10584 {
10585 struct sk_buff *msg;
10586
10587 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10588 if (!msg)
10589 return;
10590
10591 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10592 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10593 nlmsg_free(msg);
10594 return;
10595 }
10596
10597 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10598 NL80211_MCGRP_SCAN, GFP_KERNEL);
10599 }
10600
10601 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10602 struct net_device *netdev, u32 cmd)
10603 {
10604 struct sk_buff *msg;
10605
10606 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10607 if (!msg)
10608 return;
10609
10610 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10611 nlmsg_free(msg);
10612 return;
10613 }
10614
10615 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10616 NL80211_MCGRP_SCAN, GFP_KERNEL);
10617 }
10618
10619 /*
10620 * This can happen on global regulatory changes or device specific settings
10621 * based on custom world regulatory domains.
10622 */
10623 void nl80211_send_reg_change_event(struct regulatory_request *request)
10624 {
10625 struct sk_buff *msg;
10626 void *hdr;
10627
10628 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10629 if (!msg)
10630 return;
10631
10632 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10633 if (!hdr) {
10634 nlmsg_free(msg);
10635 return;
10636 }
10637
10638 /* Userspace can always count this one always being set */
10639 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10640 goto nla_put_failure;
10641
10642 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10643 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10644 NL80211_REGDOM_TYPE_WORLD))
10645 goto nla_put_failure;
10646 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10647 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10648 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10649 goto nla_put_failure;
10650 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10651 request->intersect) {
10652 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10653 NL80211_REGDOM_TYPE_INTERSECTION))
10654 goto nla_put_failure;
10655 } else {
10656 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10657 NL80211_REGDOM_TYPE_COUNTRY) ||
10658 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10659 request->alpha2))
10660 goto nla_put_failure;
10661 }
10662
10663 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10664 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10665 goto nla_put_failure;
10666
10667 genlmsg_end(msg, hdr);
10668
10669 rcu_read_lock();
10670 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10671 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10672 rcu_read_unlock();
10673
10674 return;
10675
10676 nla_put_failure:
10677 genlmsg_cancel(msg, hdr);
10678 nlmsg_free(msg);
10679 }
10680
10681 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10682 struct net_device *netdev,
10683 const u8 *buf, size_t len,
10684 enum nl80211_commands cmd, gfp_t gfp,
10685 int uapsd_queues)
10686 {
10687 struct sk_buff *msg;
10688 void *hdr;
10689
10690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10691 if (!msg)
10692 return;
10693
10694 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10695 if (!hdr) {
10696 nlmsg_free(msg);
10697 return;
10698 }
10699
10700 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10701 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10702 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10703 goto nla_put_failure;
10704
10705 if (uapsd_queues >= 0) {
10706 struct nlattr *nla_wmm =
10707 nla_nest_start(msg, NL80211_ATTR_STA_WME);
10708 if (!nla_wmm)
10709 goto nla_put_failure;
10710
10711 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
10712 uapsd_queues))
10713 goto nla_put_failure;
10714
10715 nla_nest_end(msg, nla_wmm);
10716 }
10717
10718 genlmsg_end(msg, hdr);
10719
10720 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10721 NL80211_MCGRP_MLME, gfp);
10722 return;
10723
10724 nla_put_failure:
10725 genlmsg_cancel(msg, hdr);
10726 nlmsg_free(msg);
10727 }
10728
10729 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10730 struct net_device *netdev, const u8 *buf,
10731 size_t len, gfp_t gfp)
10732 {
10733 nl80211_send_mlme_event(rdev, netdev, buf, len,
10734 NL80211_CMD_AUTHENTICATE, gfp, -1);
10735 }
10736
10737 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10738 struct net_device *netdev, const u8 *buf,
10739 size_t len, gfp_t gfp, int uapsd_queues)
10740 {
10741 nl80211_send_mlme_event(rdev, netdev, buf, len,
10742 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
10743 }
10744
10745 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10746 struct net_device *netdev, const u8 *buf,
10747 size_t len, gfp_t gfp)
10748 {
10749 nl80211_send_mlme_event(rdev, netdev, buf, len,
10750 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
10751 }
10752
10753 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10754 struct net_device *netdev, const u8 *buf,
10755 size_t len, gfp_t gfp)
10756 {
10757 nl80211_send_mlme_event(rdev, netdev, buf, len,
10758 NL80211_CMD_DISASSOCIATE, gfp, -1);
10759 }
10760
10761 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10762 size_t len)
10763 {
10764 struct wireless_dev *wdev = dev->ieee80211_ptr;
10765 struct wiphy *wiphy = wdev->wiphy;
10766 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10767 const struct ieee80211_mgmt *mgmt = (void *)buf;
10768 u32 cmd;
10769
10770 if (WARN_ON(len < 2))
10771 return;
10772
10773 if (ieee80211_is_deauth(mgmt->frame_control))
10774 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10775 else
10776 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10777
10778 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10779 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
10780 }
10781 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10782
10783 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10784 struct net_device *netdev, int cmd,
10785 const u8 *addr, gfp_t gfp)
10786 {
10787 struct sk_buff *msg;
10788 void *hdr;
10789
10790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10791 if (!msg)
10792 return;
10793
10794 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10795 if (!hdr) {
10796 nlmsg_free(msg);
10797 return;
10798 }
10799
10800 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10801 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10802 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10803 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10804 goto nla_put_failure;
10805
10806 genlmsg_end(msg, hdr);
10807
10808 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10809 NL80211_MCGRP_MLME, gfp);
10810 return;
10811
10812 nla_put_failure:
10813 genlmsg_cancel(msg, hdr);
10814 nlmsg_free(msg);
10815 }
10816
10817 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10818 struct net_device *netdev, const u8 *addr,
10819 gfp_t gfp)
10820 {
10821 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10822 addr, gfp);
10823 }
10824
10825 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10826 struct net_device *netdev, const u8 *addr,
10827 gfp_t gfp)
10828 {
10829 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10830 addr, gfp);
10831 }
10832
10833 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10834 struct net_device *netdev, const u8 *bssid,
10835 const u8 *req_ie, size_t req_ie_len,
10836 const u8 *resp_ie, size_t resp_ie_len,
10837 u16 status, gfp_t gfp)
10838 {
10839 struct sk_buff *msg;
10840 void *hdr;
10841
10842 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10843 if (!msg)
10844 return;
10845
10846 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10847 if (!hdr) {
10848 nlmsg_free(msg);
10849 return;
10850 }
10851
10852 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10853 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10854 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10855 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10856 (req_ie &&
10857 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10858 (resp_ie &&
10859 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10860 goto nla_put_failure;
10861
10862 genlmsg_end(msg, hdr);
10863
10864 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10865 NL80211_MCGRP_MLME, gfp);
10866 return;
10867
10868 nla_put_failure:
10869 genlmsg_cancel(msg, hdr);
10870 nlmsg_free(msg);
10871
10872 }
10873
10874 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10875 struct net_device *netdev, const u8 *bssid,
10876 const u8 *req_ie, size_t req_ie_len,
10877 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10878 {
10879 struct sk_buff *msg;
10880 void *hdr;
10881
10882 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10883 if (!msg)
10884 return;
10885
10886 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10887 if (!hdr) {
10888 nlmsg_free(msg);
10889 return;
10890 }
10891
10892 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10893 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10894 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10895 (req_ie &&
10896 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10897 (resp_ie &&
10898 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10899 goto nla_put_failure;
10900
10901 genlmsg_end(msg, hdr);
10902
10903 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10904 NL80211_MCGRP_MLME, gfp);
10905 return;
10906
10907 nla_put_failure:
10908 genlmsg_cancel(msg, hdr);
10909 nlmsg_free(msg);
10910
10911 }
10912
10913 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10914 struct net_device *netdev, u16 reason,
10915 const u8 *ie, size_t ie_len, bool from_ap)
10916 {
10917 struct sk_buff *msg;
10918 void *hdr;
10919
10920 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10921 if (!msg)
10922 return;
10923
10924 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10925 if (!hdr) {
10926 nlmsg_free(msg);
10927 return;
10928 }
10929
10930 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10931 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10932 (from_ap && reason &&
10933 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10934 (from_ap &&
10935 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10936 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10937 goto nla_put_failure;
10938
10939 genlmsg_end(msg, hdr);
10940
10941 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10942 NL80211_MCGRP_MLME, GFP_KERNEL);
10943 return;
10944
10945 nla_put_failure:
10946 genlmsg_cancel(msg, hdr);
10947 nlmsg_free(msg);
10948
10949 }
10950
10951 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10952 struct net_device *netdev, const u8 *bssid,
10953 gfp_t gfp)
10954 {
10955 struct sk_buff *msg;
10956 void *hdr;
10957
10958 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10959 if (!msg)
10960 return;
10961
10962 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10963 if (!hdr) {
10964 nlmsg_free(msg);
10965 return;
10966 }
10967
10968 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10969 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10970 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10971 goto nla_put_failure;
10972
10973 genlmsg_end(msg, hdr);
10974
10975 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10976 NL80211_MCGRP_MLME, gfp);
10977 return;
10978
10979 nla_put_failure:
10980 genlmsg_cancel(msg, hdr);
10981 nlmsg_free(msg);
10982 }
10983
10984 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10985 const u8* ie, u8 ie_len, gfp_t gfp)
10986 {
10987 struct wireless_dev *wdev = dev->ieee80211_ptr;
10988 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10989 struct sk_buff *msg;
10990 void *hdr;
10991
10992 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10993 return;
10994
10995 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10996
10997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10998 if (!msg)
10999 return;
11000
11001 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11002 if (!hdr) {
11003 nlmsg_free(msg);
11004 return;
11005 }
11006
11007 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11008 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11009 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11010 (ie_len && ie &&
11011 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11012 goto nla_put_failure;
11013
11014 genlmsg_end(msg, hdr);
11015
11016 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11017 NL80211_MCGRP_MLME, gfp);
11018 return;
11019
11020 nla_put_failure:
11021 genlmsg_cancel(msg, hdr);
11022 nlmsg_free(msg);
11023 }
11024 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11025
11026 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11027 struct net_device *netdev, const u8 *addr,
11028 enum nl80211_key_type key_type, int key_id,
11029 const u8 *tsc, gfp_t gfp)
11030 {
11031 struct sk_buff *msg;
11032 void *hdr;
11033
11034 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11035 if (!msg)
11036 return;
11037
11038 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11039 if (!hdr) {
11040 nlmsg_free(msg);
11041 return;
11042 }
11043
11044 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11045 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11046 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11047 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11048 (key_id != -1 &&
11049 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11050 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11051 goto nla_put_failure;
11052
11053 genlmsg_end(msg, hdr);
11054
11055 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11056 NL80211_MCGRP_MLME, gfp);
11057 return;
11058
11059 nla_put_failure:
11060 genlmsg_cancel(msg, hdr);
11061 nlmsg_free(msg);
11062 }
11063
11064 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11065 struct ieee80211_channel *channel_before,
11066 struct ieee80211_channel *channel_after)
11067 {
11068 struct sk_buff *msg;
11069 void *hdr;
11070 struct nlattr *nl_freq;
11071
11072 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11073 if (!msg)
11074 return;
11075
11076 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11077 if (!hdr) {
11078 nlmsg_free(msg);
11079 return;
11080 }
11081
11082 /*
11083 * Since we are applying the beacon hint to a wiphy we know its
11084 * wiphy_idx is valid
11085 */
11086 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11087 goto nla_put_failure;
11088
11089 /* Before */
11090 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11091 if (!nl_freq)
11092 goto nla_put_failure;
11093 if (nl80211_msg_put_channel(msg, channel_before, false))
11094 goto nla_put_failure;
11095 nla_nest_end(msg, nl_freq);
11096
11097 /* After */
11098 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11099 if (!nl_freq)
11100 goto nla_put_failure;
11101 if (nl80211_msg_put_channel(msg, channel_after, false))
11102 goto nla_put_failure;
11103 nla_nest_end(msg, nl_freq);
11104
11105 genlmsg_end(msg, hdr);
11106
11107 rcu_read_lock();
11108 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11109 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11110 rcu_read_unlock();
11111
11112 return;
11113
11114 nla_put_failure:
11115 genlmsg_cancel(msg, hdr);
11116 nlmsg_free(msg);
11117 }
11118
11119 static void nl80211_send_remain_on_chan_event(
11120 int cmd, struct cfg80211_registered_device *rdev,
11121 struct wireless_dev *wdev, u64 cookie,
11122 struct ieee80211_channel *chan,
11123 unsigned int duration, gfp_t gfp)
11124 {
11125 struct sk_buff *msg;
11126 void *hdr;
11127
11128 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11129 if (!msg)
11130 return;
11131
11132 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11133 if (!hdr) {
11134 nlmsg_free(msg);
11135 return;
11136 }
11137
11138 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11139 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11140 wdev->netdev->ifindex)) ||
11141 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11142 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11143 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11144 NL80211_CHAN_NO_HT) ||
11145 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11146 goto nla_put_failure;
11147
11148 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11149 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11150 goto nla_put_failure;
11151
11152 genlmsg_end(msg, hdr);
11153
11154 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11155 NL80211_MCGRP_MLME, gfp);
11156 return;
11157
11158 nla_put_failure:
11159 genlmsg_cancel(msg, hdr);
11160 nlmsg_free(msg);
11161 }
11162
11163 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11164 struct ieee80211_channel *chan,
11165 unsigned int duration, gfp_t gfp)
11166 {
11167 struct wiphy *wiphy = wdev->wiphy;
11168 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11169
11170 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11171 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11172 rdev, wdev, cookie, chan,
11173 duration, gfp);
11174 }
11175 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11176
11177 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11178 struct ieee80211_channel *chan,
11179 gfp_t gfp)
11180 {
11181 struct wiphy *wiphy = wdev->wiphy;
11182 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11183
11184 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11185 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11186 rdev, wdev, cookie, chan, 0, gfp);
11187 }
11188 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11189
11190 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11191 struct station_info *sinfo, gfp_t gfp)
11192 {
11193 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11194 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11195 struct sk_buff *msg;
11196
11197 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11198
11199 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11200 if (!msg)
11201 return;
11202
11203 if (nl80211_send_station(msg, 0, 0, 0,
11204 rdev, dev, mac_addr, sinfo) < 0) {
11205 nlmsg_free(msg);
11206 return;
11207 }
11208
11209 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11210 NL80211_MCGRP_MLME, gfp);
11211 }
11212 EXPORT_SYMBOL(cfg80211_new_sta);
11213
11214 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11215 {
11216 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11217 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11218 struct sk_buff *msg;
11219 void *hdr;
11220
11221 trace_cfg80211_del_sta(dev, mac_addr);
11222
11223 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11224 if (!msg)
11225 return;
11226
11227 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11228 if (!hdr) {
11229 nlmsg_free(msg);
11230 return;
11231 }
11232
11233 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11234 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11235 goto nla_put_failure;
11236
11237 genlmsg_end(msg, hdr);
11238
11239 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11240 NL80211_MCGRP_MLME, gfp);
11241 return;
11242
11243 nla_put_failure:
11244 genlmsg_cancel(msg, hdr);
11245 nlmsg_free(msg);
11246 }
11247 EXPORT_SYMBOL(cfg80211_del_sta);
11248
11249 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11250 enum nl80211_connect_failed_reason reason,
11251 gfp_t gfp)
11252 {
11253 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11254 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11255 struct sk_buff *msg;
11256 void *hdr;
11257
11258 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11259 if (!msg)
11260 return;
11261
11262 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11263 if (!hdr) {
11264 nlmsg_free(msg);
11265 return;
11266 }
11267
11268 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11269 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11270 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11271 goto nla_put_failure;
11272
11273 genlmsg_end(msg, hdr);
11274
11275 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11276 NL80211_MCGRP_MLME, gfp);
11277 return;
11278
11279 nla_put_failure:
11280 genlmsg_cancel(msg, hdr);
11281 nlmsg_free(msg);
11282 }
11283 EXPORT_SYMBOL(cfg80211_conn_failed);
11284
11285 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11286 const u8 *addr, gfp_t gfp)
11287 {
11288 struct wireless_dev *wdev = dev->ieee80211_ptr;
11289 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11290 struct sk_buff *msg;
11291 void *hdr;
11292 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11293
11294 if (!nlportid)
11295 return false;
11296
11297 msg = nlmsg_new(100, gfp);
11298 if (!msg)
11299 return true;
11300
11301 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11302 if (!hdr) {
11303 nlmsg_free(msg);
11304 return true;
11305 }
11306
11307 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11308 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11309 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11310 goto nla_put_failure;
11311
11312 genlmsg_end(msg, hdr);
11313 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11314 return true;
11315
11316 nla_put_failure:
11317 genlmsg_cancel(msg, hdr);
11318 nlmsg_free(msg);
11319 return true;
11320 }
11321
11322 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11323 const u8 *addr, gfp_t gfp)
11324 {
11325 struct wireless_dev *wdev = dev->ieee80211_ptr;
11326 bool ret;
11327
11328 trace_cfg80211_rx_spurious_frame(dev, addr);
11329
11330 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11331 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11332 trace_cfg80211_return_bool(false);
11333 return false;
11334 }
11335 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11336 addr, gfp);
11337 trace_cfg80211_return_bool(ret);
11338 return ret;
11339 }
11340 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11341
11342 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11343 const u8 *addr, gfp_t gfp)
11344 {
11345 struct wireless_dev *wdev = dev->ieee80211_ptr;
11346 bool ret;
11347
11348 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11349
11350 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11351 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11352 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11353 trace_cfg80211_return_bool(false);
11354 return false;
11355 }
11356 ret = __nl80211_unexpected_frame(dev,
11357 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11358 addr, gfp);
11359 trace_cfg80211_return_bool(ret);
11360 return ret;
11361 }
11362 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11363
11364 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11365 struct wireless_dev *wdev, u32 nlportid,
11366 int freq, int sig_dbm,
11367 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11368 {
11369 struct net_device *netdev = wdev->netdev;
11370 struct sk_buff *msg;
11371 void *hdr;
11372
11373 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11374 if (!msg)
11375 return -ENOMEM;
11376
11377 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11378 if (!hdr) {
11379 nlmsg_free(msg);
11380 return -ENOMEM;
11381 }
11382
11383 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11384 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11385 netdev->ifindex)) ||
11386 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11387 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11388 (sig_dbm &&
11389 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11390 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11391 (flags &&
11392 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11393 goto nla_put_failure;
11394
11395 genlmsg_end(msg, hdr);
11396
11397 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11398
11399 nla_put_failure:
11400 genlmsg_cancel(msg, hdr);
11401 nlmsg_free(msg);
11402 return -ENOBUFS;
11403 }
11404
11405 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11406 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11407 {
11408 struct wiphy *wiphy = wdev->wiphy;
11409 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11410 struct net_device *netdev = wdev->netdev;
11411 struct sk_buff *msg;
11412 void *hdr;
11413
11414 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11415
11416 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11417 if (!msg)
11418 return;
11419
11420 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11421 if (!hdr) {
11422 nlmsg_free(msg);
11423 return;
11424 }
11425
11426 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11427 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11428 netdev->ifindex)) ||
11429 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11430 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11431 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11432 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11433 goto nla_put_failure;
11434
11435 genlmsg_end(msg, hdr);
11436
11437 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11438 NL80211_MCGRP_MLME, gfp);
11439 return;
11440
11441 nla_put_failure:
11442 genlmsg_cancel(msg, hdr);
11443 nlmsg_free(msg);
11444 }
11445 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11446
11447 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11448 enum nl80211_cqm_rssi_threshold_event rssi_event,
11449 gfp_t gfp)
11450 {
11451 struct wireless_dev *wdev = dev->ieee80211_ptr;
11452 struct wiphy *wiphy = wdev->wiphy;
11453 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11454 struct sk_buff *msg;
11455 struct nlattr *pinfoattr;
11456 void *hdr;
11457
11458 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11459
11460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11461 if (!msg)
11462 return;
11463
11464 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11465 if (!hdr) {
11466 nlmsg_free(msg);
11467 return;
11468 }
11469
11470 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11471 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11472 goto nla_put_failure;
11473
11474 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11475 if (!pinfoattr)
11476 goto nla_put_failure;
11477
11478 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11479 rssi_event))
11480 goto nla_put_failure;
11481
11482 nla_nest_end(msg, pinfoattr);
11483
11484 genlmsg_end(msg, hdr);
11485
11486 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11487 NL80211_MCGRP_MLME, gfp);
11488 return;
11489
11490 nla_put_failure:
11491 genlmsg_cancel(msg, hdr);
11492 nlmsg_free(msg);
11493 }
11494 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11495
11496 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11497 struct net_device *netdev, const u8 *bssid,
11498 const u8 *replay_ctr, gfp_t gfp)
11499 {
11500 struct sk_buff *msg;
11501 struct nlattr *rekey_attr;
11502 void *hdr;
11503
11504 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11505 if (!msg)
11506 return;
11507
11508 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11509 if (!hdr) {
11510 nlmsg_free(msg);
11511 return;
11512 }
11513
11514 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11515 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11516 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11517 goto nla_put_failure;
11518
11519 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11520 if (!rekey_attr)
11521 goto nla_put_failure;
11522
11523 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11524 NL80211_REPLAY_CTR_LEN, replay_ctr))
11525 goto nla_put_failure;
11526
11527 nla_nest_end(msg, rekey_attr);
11528
11529 genlmsg_end(msg, hdr);
11530
11531 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11532 NL80211_MCGRP_MLME, gfp);
11533 return;
11534
11535 nla_put_failure:
11536 genlmsg_cancel(msg, hdr);
11537 nlmsg_free(msg);
11538 }
11539
11540 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11541 const u8 *replay_ctr, gfp_t gfp)
11542 {
11543 struct wireless_dev *wdev = dev->ieee80211_ptr;
11544 struct wiphy *wiphy = wdev->wiphy;
11545 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11546
11547 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11548 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11549 }
11550 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11551
11552 static void
11553 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11554 struct net_device *netdev, int index,
11555 const u8 *bssid, bool preauth, gfp_t gfp)
11556 {
11557 struct sk_buff *msg;
11558 struct nlattr *attr;
11559 void *hdr;
11560
11561 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11562 if (!msg)
11563 return;
11564
11565 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11566 if (!hdr) {
11567 nlmsg_free(msg);
11568 return;
11569 }
11570
11571 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11572 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11573 goto nla_put_failure;
11574
11575 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11576 if (!attr)
11577 goto nla_put_failure;
11578
11579 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11580 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11581 (preauth &&
11582 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11583 goto nla_put_failure;
11584
11585 nla_nest_end(msg, attr);
11586
11587 genlmsg_end(msg, hdr);
11588
11589 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11590 NL80211_MCGRP_MLME, gfp);
11591 return;
11592
11593 nla_put_failure:
11594 genlmsg_cancel(msg, hdr);
11595 nlmsg_free(msg);
11596 }
11597
11598 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11599 const u8 *bssid, bool preauth, gfp_t gfp)
11600 {
11601 struct wireless_dev *wdev = dev->ieee80211_ptr;
11602 struct wiphy *wiphy = wdev->wiphy;
11603 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11604
11605 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11606 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11607 }
11608 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11609
11610 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11611 struct net_device *netdev,
11612 struct cfg80211_chan_def *chandef,
11613 gfp_t gfp)
11614 {
11615 struct sk_buff *msg;
11616 void *hdr;
11617
11618 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11619 if (!msg)
11620 return;
11621
11622 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11623 if (!hdr) {
11624 nlmsg_free(msg);
11625 return;
11626 }
11627
11628 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11629 goto nla_put_failure;
11630
11631 if (nl80211_send_chandef(msg, chandef))
11632 goto nla_put_failure;
11633
11634 genlmsg_end(msg, hdr);
11635
11636 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11637 NL80211_MCGRP_MLME, gfp);
11638 return;
11639
11640 nla_put_failure:
11641 genlmsg_cancel(msg, hdr);
11642 nlmsg_free(msg);
11643 }
11644
11645 void cfg80211_ch_switch_notify(struct net_device *dev,
11646 struct cfg80211_chan_def *chandef)
11647 {
11648 struct wireless_dev *wdev = dev->ieee80211_ptr;
11649 struct wiphy *wiphy = wdev->wiphy;
11650 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11651
11652 ASSERT_WDEV_LOCK(wdev);
11653
11654 trace_cfg80211_ch_switch_notify(dev, chandef);
11655
11656 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11657 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11658 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11659 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11660 return;
11661
11662 wdev->chandef = *chandef;
11663 wdev->preset_chandef = *chandef;
11664 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11665 }
11666 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11667
11668 void cfg80211_cqm_txe_notify(struct net_device *dev,
11669 const u8 *peer, u32 num_packets,
11670 u32 rate, u32 intvl, gfp_t gfp)
11671 {
11672 struct wireless_dev *wdev = dev->ieee80211_ptr;
11673 struct wiphy *wiphy = wdev->wiphy;
11674 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11675 struct sk_buff *msg;
11676 struct nlattr *pinfoattr;
11677 void *hdr;
11678
11679 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11680 if (!msg)
11681 return;
11682
11683 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11684 if (!hdr) {
11685 nlmsg_free(msg);
11686 return;
11687 }
11688
11689 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11690 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11691 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11692 goto nla_put_failure;
11693
11694 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11695 if (!pinfoattr)
11696 goto nla_put_failure;
11697
11698 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11699 goto nla_put_failure;
11700
11701 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11702 goto nla_put_failure;
11703
11704 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11705 goto nla_put_failure;
11706
11707 nla_nest_end(msg, pinfoattr);
11708
11709 genlmsg_end(msg, hdr);
11710
11711 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11712 NL80211_MCGRP_MLME, gfp);
11713 return;
11714
11715 nla_put_failure:
11716 genlmsg_cancel(msg, hdr);
11717 nlmsg_free(msg);
11718 }
11719 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11720
11721 void
11722 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11723 const struct cfg80211_chan_def *chandef,
11724 enum nl80211_radar_event event,
11725 struct net_device *netdev, gfp_t gfp)
11726 {
11727 struct sk_buff *msg;
11728 void *hdr;
11729
11730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11731 if (!msg)
11732 return;
11733
11734 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11735 if (!hdr) {
11736 nlmsg_free(msg);
11737 return;
11738 }
11739
11740 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11741 goto nla_put_failure;
11742
11743 /* NOP and radar events don't need a netdev parameter */
11744 if (netdev) {
11745 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11746
11747 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11748 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11749 goto nla_put_failure;
11750 }
11751
11752 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11753 goto nla_put_failure;
11754
11755 if (nl80211_send_chandef(msg, chandef))
11756 goto nla_put_failure;
11757
11758 genlmsg_end(msg, hdr);
11759
11760 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11761 NL80211_MCGRP_MLME, gfp);
11762 return;
11763
11764 nla_put_failure:
11765 genlmsg_cancel(msg, hdr);
11766 nlmsg_free(msg);
11767 }
11768
11769 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11770 const u8 *peer, u32 num_packets, gfp_t gfp)
11771 {
11772 struct wireless_dev *wdev = dev->ieee80211_ptr;
11773 struct wiphy *wiphy = wdev->wiphy;
11774 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11775 struct sk_buff *msg;
11776 struct nlattr *pinfoattr;
11777 void *hdr;
11778
11779 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11780
11781 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11782 if (!msg)
11783 return;
11784
11785 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11786 if (!hdr) {
11787 nlmsg_free(msg);
11788 return;
11789 }
11790
11791 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11792 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11793 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11794 goto nla_put_failure;
11795
11796 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11797 if (!pinfoattr)
11798 goto nla_put_failure;
11799
11800 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11801 goto nla_put_failure;
11802
11803 nla_nest_end(msg, pinfoattr);
11804
11805 genlmsg_end(msg, hdr);
11806
11807 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11808 NL80211_MCGRP_MLME, gfp);
11809 return;
11810
11811 nla_put_failure:
11812 genlmsg_cancel(msg, hdr);
11813 nlmsg_free(msg);
11814 }
11815 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11816
11817 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11818 u64 cookie, bool acked, gfp_t gfp)
11819 {
11820 struct wireless_dev *wdev = dev->ieee80211_ptr;
11821 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11822 struct sk_buff *msg;
11823 void *hdr;
11824
11825 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11826
11827 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11828
11829 if (!msg)
11830 return;
11831
11832 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11833 if (!hdr) {
11834 nlmsg_free(msg);
11835 return;
11836 }
11837
11838 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11839 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11840 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11841 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11842 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11843 goto nla_put_failure;
11844
11845 genlmsg_end(msg, hdr);
11846
11847 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11848 NL80211_MCGRP_MLME, gfp);
11849 return;
11850
11851 nla_put_failure:
11852 genlmsg_cancel(msg, hdr);
11853 nlmsg_free(msg);
11854 }
11855 EXPORT_SYMBOL(cfg80211_probe_status);
11856
11857 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11858 const u8 *frame, size_t len,
11859 int freq, int sig_dbm)
11860 {
11861 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11862 struct sk_buff *msg;
11863 void *hdr;
11864 struct cfg80211_beacon_registration *reg;
11865
11866 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11867
11868 spin_lock_bh(&rdev->beacon_registrations_lock);
11869 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11870 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11871 if (!msg) {
11872 spin_unlock_bh(&rdev->beacon_registrations_lock);
11873 return;
11874 }
11875
11876 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11877 if (!hdr)
11878 goto nla_put_failure;
11879
11880 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11881 (freq &&
11882 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11883 (sig_dbm &&
11884 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11885 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11886 goto nla_put_failure;
11887
11888 genlmsg_end(msg, hdr);
11889
11890 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11891 }
11892 spin_unlock_bh(&rdev->beacon_registrations_lock);
11893 return;
11894
11895 nla_put_failure:
11896 spin_unlock_bh(&rdev->beacon_registrations_lock);
11897 if (hdr)
11898 genlmsg_cancel(msg, hdr);
11899 nlmsg_free(msg);
11900 }
11901 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11902
11903 #ifdef CONFIG_PM
11904 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11905 struct cfg80211_wowlan_wakeup *wakeup,
11906 gfp_t gfp)
11907 {
11908 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11909 struct sk_buff *msg;
11910 void *hdr;
11911 int size = 200;
11912
11913 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11914
11915 if (wakeup)
11916 size += wakeup->packet_present_len;
11917
11918 msg = nlmsg_new(size, gfp);
11919 if (!msg)
11920 return;
11921
11922 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11923 if (!hdr)
11924 goto free_msg;
11925
11926 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11927 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11928 goto free_msg;
11929
11930 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11931 wdev->netdev->ifindex))
11932 goto free_msg;
11933
11934 if (wakeup) {
11935 struct nlattr *reasons;
11936
11937 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11938 if (!reasons)
11939 goto free_msg;
11940
11941 if (wakeup->disconnect &&
11942 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11943 goto free_msg;
11944 if (wakeup->magic_pkt &&
11945 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11946 goto free_msg;
11947 if (wakeup->gtk_rekey_failure &&
11948 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11949 goto free_msg;
11950 if (wakeup->eap_identity_req &&
11951 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11952 goto free_msg;
11953 if (wakeup->four_way_handshake &&
11954 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11955 goto free_msg;
11956 if (wakeup->rfkill_release &&
11957 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11958 goto free_msg;
11959
11960 if (wakeup->pattern_idx >= 0 &&
11961 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11962 wakeup->pattern_idx))
11963 goto free_msg;
11964
11965 if (wakeup->tcp_match &&
11966 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11967 goto free_msg;
11968
11969 if (wakeup->tcp_connlost &&
11970 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11971 goto free_msg;
11972
11973 if (wakeup->tcp_nomoretokens &&
11974 nla_put_flag(msg,
11975 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11976 goto free_msg;
11977
11978 if (wakeup->packet) {
11979 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11980 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11981
11982 if (!wakeup->packet_80211) {
11983 pkt_attr =
11984 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11985 len_attr =
11986 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11987 }
11988
11989 if (wakeup->packet_len &&
11990 nla_put_u32(msg, len_attr, wakeup->packet_len))
11991 goto free_msg;
11992
11993 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11994 wakeup->packet))
11995 goto free_msg;
11996 }
11997
11998 nla_nest_end(msg, reasons);
11999 }
12000
12001 genlmsg_end(msg, hdr);
12002
12003 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12004 NL80211_MCGRP_MLME, gfp);
12005 return;
12006
12007 free_msg:
12008 nlmsg_free(msg);
12009 }
12010 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12011 #endif
12012
12013 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12014 enum nl80211_tdls_operation oper,
12015 u16 reason_code, gfp_t gfp)
12016 {
12017 struct wireless_dev *wdev = dev->ieee80211_ptr;
12018 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12019 struct sk_buff *msg;
12020 void *hdr;
12021
12022 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12023 reason_code);
12024
12025 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12026 if (!msg)
12027 return;
12028
12029 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12030 if (!hdr) {
12031 nlmsg_free(msg);
12032 return;
12033 }
12034
12035 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12036 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12037 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12038 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12039 (reason_code > 0 &&
12040 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12041 goto nla_put_failure;
12042
12043 genlmsg_end(msg, hdr);
12044
12045 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12046 NL80211_MCGRP_MLME, gfp);
12047 return;
12048
12049 nla_put_failure:
12050 genlmsg_cancel(msg, hdr);
12051 nlmsg_free(msg);
12052 }
12053 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12054
12055 static int nl80211_netlink_notify(struct notifier_block * nb,
12056 unsigned long state,
12057 void *_notify)
12058 {
12059 struct netlink_notify *notify = _notify;
12060 struct cfg80211_registered_device *rdev;
12061 struct wireless_dev *wdev;
12062 struct cfg80211_beacon_registration *reg, *tmp;
12063
12064 if (state != NETLINK_URELEASE)
12065 return NOTIFY_DONE;
12066
12067 rcu_read_lock();
12068
12069 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12070 bool schedule_destroy_work = false;
12071
12072 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12073 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12074
12075 if (wdev->owner_nlportid == notify->portid)
12076 schedule_destroy_work = true;
12077 }
12078
12079 spin_lock_bh(&rdev->beacon_registrations_lock);
12080 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12081 list) {
12082 if (reg->nlportid == notify->portid) {
12083 list_del(&reg->list);
12084 kfree(reg);
12085 break;
12086 }
12087 }
12088 spin_unlock_bh(&rdev->beacon_registrations_lock);
12089
12090 if (schedule_destroy_work) {
12091 struct cfg80211_iface_destroy *destroy;
12092
12093 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12094 if (destroy) {
12095 destroy->nlportid = notify->portid;
12096 spin_lock(&rdev->destroy_list_lock);
12097 list_add(&destroy->list, &rdev->destroy_list);
12098 spin_unlock(&rdev->destroy_list_lock);
12099 schedule_work(&rdev->destroy_work);
12100 }
12101 }
12102 }
12103
12104 rcu_read_unlock();
12105
12106 return NOTIFY_OK;
12107 }
12108
12109 static struct notifier_block nl80211_netlink_notifier = {
12110 .notifier_call = nl80211_netlink_notify,
12111 };
12112
12113 void cfg80211_ft_event(struct net_device *netdev,
12114 struct cfg80211_ft_event_params *ft_event)
12115 {
12116 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12117 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12118 struct sk_buff *msg;
12119 void *hdr;
12120
12121 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12122
12123 if (!ft_event->target_ap)
12124 return;
12125
12126 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12127 if (!msg)
12128 return;
12129
12130 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12131 if (!hdr)
12132 goto out;
12133
12134 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12135 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12136 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12137 goto out;
12138
12139 if (ft_event->ies &&
12140 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12141 goto out;
12142 if (ft_event->ric_ies &&
12143 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12144 ft_event->ric_ies))
12145 goto out;
12146
12147 genlmsg_end(msg, hdr);
12148
12149 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12150 NL80211_MCGRP_MLME, GFP_KERNEL);
12151 return;
12152 out:
12153 nlmsg_free(msg);
12154 }
12155 EXPORT_SYMBOL(cfg80211_ft_event);
12156
12157 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12158 {
12159 struct cfg80211_registered_device *rdev;
12160 struct sk_buff *msg;
12161 void *hdr;
12162 u32 nlportid;
12163
12164 rdev = wiphy_to_rdev(wdev->wiphy);
12165 if (!rdev->crit_proto_nlportid)
12166 return;
12167
12168 nlportid = rdev->crit_proto_nlportid;
12169 rdev->crit_proto_nlportid = 0;
12170
12171 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12172 if (!msg)
12173 return;
12174
12175 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12176 if (!hdr)
12177 goto nla_put_failure;
12178
12179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12180 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12181 goto nla_put_failure;
12182
12183 genlmsg_end(msg, hdr);
12184
12185 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12186 return;
12187
12188 nla_put_failure:
12189 if (hdr)
12190 genlmsg_cancel(msg, hdr);
12191 nlmsg_free(msg);
12192
12193 }
12194 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12195
12196 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12197 {
12198 struct wiphy *wiphy = wdev->wiphy;
12199 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12200 struct sk_buff *msg;
12201 void *hdr;
12202
12203 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12204 if (!msg)
12205 return;
12206
12207 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12208 if (!hdr)
12209 goto out;
12210
12211 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12212 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12213 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12214 goto out;
12215
12216 genlmsg_end(msg, hdr);
12217
12218 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12219 NL80211_MCGRP_MLME, GFP_KERNEL);
12220 return;
12221 out:
12222 nlmsg_free(msg);
12223 }
12224
12225 /* initialisation/exit functions */
12226
12227 int nl80211_init(void)
12228 {
12229 int err;
12230
12231 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12232 nl80211_mcgrps);
12233 if (err)
12234 return err;
12235
12236 err = netlink_register_notifier(&nl80211_netlink_notifier);
12237 if (err)
12238 goto err_out;
12239
12240 return 0;
12241 err_out:
12242 genl_unregister_family(&nl80211_fam);
12243 return err;
12244 }
12245
12246 void nl80211_exit(void)
12247 {
12248 netlink_unregister_notifier(&nl80211_netlink_notifier);
12249 genl_unregister_family(&nl80211_fam);
12250 }
Linux kernel - Deliverables
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