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Merge branch 'mac80211' into mac80211-next
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = "config", },
63 [NL80211_MCGRP_SCAN] = { .name = "scan", },
64 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
65 [NL80211_MCGRP_MLME] = { .name = "mlme", },
66 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 };
399
400 /* policy for the key attributes */
401 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
402 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
403 [NL80211_KEY_IDX] = { .type = NLA_U8 },
404 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
405 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
406 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
407 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
408 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
409 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
410 };
411
412 /* policy for the key default flags */
413 static const struct nla_policy
414 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
415 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
416 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
417 };
418
419 /* policy for WoWLAN attributes */
420 static const struct nla_policy
421 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
422 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
423 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
424 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
426 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
431 };
432
433 static const struct nla_policy
434 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
435 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
436 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
437 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
438 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
439 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
440 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
441 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
442 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
443 },
444 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
445 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
446 },
447 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
448 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
449 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
450 };
451
452 /* policy for coalesce rule attributes */
453 static const struct nla_policy
454 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
455 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
456 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
457 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
458 };
459
460 /* policy for GTK rekey offload attributes */
461 static const struct nla_policy
462 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
463 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
464 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
465 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
466 };
467
468 static const struct nla_policy
469 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
470 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
471 .len = IEEE80211_MAX_SSID_LEN },
472 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
473 };
474
475 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
476 struct netlink_callback *cb,
477 struct cfg80211_registered_device **rdev,
478 struct wireless_dev **wdev)
479 {
480 int err;
481
482 rtnl_lock();
483
484 if (!cb->args[0]) {
485 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
486 nl80211_fam.attrbuf, nl80211_fam.maxattr,
487 nl80211_policy);
488 if (err)
489 goto out_unlock;
490
491 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
492 nl80211_fam.attrbuf);
493 if (IS_ERR(*wdev)) {
494 err = PTR_ERR(*wdev);
495 goto out_unlock;
496 }
497 *rdev = wiphy_to_rdev((*wdev)->wiphy);
498 /* 0 is the first index - add 1 to parse only once */
499 cb->args[0] = (*rdev)->wiphy_idx + 1;
500 cb->args[1] = (*wdev)->identifier;
501 } else {
502 /* subtract the 1 again here */
503 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
504 struct wireless_dev *tmp;
505
506 if (!wiphy) {
507 err = -ENODEV;
508 goto out_unlock;
509 }
510 *rdev = wiphy_to_rdev(wiphy);
511 *wdev = NULL;
512
513 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
514 if (tmp->identifier == cb->args[1]) {
515 *wdev = tmp;
516 break;
517 }
518 }
519
520 if (!*wdev) {
521 err = -ENODEV;
522 goto out_unlock;
523 }
524 }
525
526 return 0;
527 out_unlock:
528 rtnl_unlock();
529 return err;
530 }
531
532 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
533 {
534 rtnl_unlock();
535 }
536
537 /* IE validation */
538 static bool is_valid_ie_attr(const struct nlattr *attr)
539 {
540 const u8 *pos;
541 int len;
542
543 if (!attr)
544 return true;
545
546 pos = nla_data(attr);
547 len = nla_len(attr);
548
549 while (len) {
550 u8 elemlen;
551
552 if (len < 2)
553 return false;
554 len -= 2;
555
556 elemlen = pos[1];
557 if (elemlen > len)
558 return false;
559
560 len -= elemlen;
561 pos += 2 + elemlen;
562 }
563
564 return true;
565 }
566
567 /* message building helper */
568 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
569 int flags, u8 cmd)
570 {
571 /* since there is no private header just add the generic one */
572 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
573 }
574
575 static int nl80211_msg_put_channel(struct sk_buff *msg,
576 struct ieee80211_channel *chan,
577 bool large)
578 {
579 /* Some channels must be completely excluded from the
580 * list to protect old user-space tools from breaking
581 */
582 if (!large && chan->flags &
583 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
584 return 0;
585
586 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
587 chan->center_freq))
588 goto nla_put_failure;
589
590 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
591 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
592 goto nla_put_failure;
593 if (chan->flags & IEEE80211_CHAN_NO_IR) {
594 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
595 goto nla_put_failure;
596 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
597 goto nla_put_failure;
598 }
599 if (chan->flags & IEEE80211_CHAN_RADAR) {
600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
601 goto nla_put_failure;
602 if (large) {
603 u32 time;
604
605 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
606
607 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
608 chan->dfs_state))
609 goto nla_put_failure;
610 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
611 time))
612 goto nla_put_failure;
613 if (nla_put_u32(msg,
614 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
615 chan->dfs_cac_ms))
616 goto nla_put_failure;
617 }
618 }
619
620 if (large) {
621 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
622 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
623 goto nla_put_failure;
624 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
625 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
626 goto nla_put_failure;
627 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
644 goto nla_put_failure;
645 }
646
647 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
648 DBM_TO_MBM(chan->max_power)))
649 goto nla_put_failure;
650
651 return 0;
652
653 nla_put_failure:
654 return -ENOBUFS;
655 }
656
657 /* netlink command implementations */
658
659 struct key_parse {
660 struct key_params p;
661 int idx;
662 int type;
663 bool def, defmgmt;
664 bool def_uni, def_multi;
665 };
666
667 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
668 {
669 struct nlattr *tb[NL80211_KEY_MAX + 1];
670 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
671 nl80211_key_policy);
672 if (err)
673 return err;
674
675 k->def = !!tb[NL80211_KEY_DEFAULT];
676 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
677
678 if (k->def) {
679 k->def_uni = true;
680 k->def_multi = true;
681 }
682 if (k->defmgmt)
683 k->def_multi = true;
684
685 if (tb[NL80211_KEY_IDX])
686 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
687
688 if (tb[NL80211_KEY_DATA]) {
689 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
690 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
691 }
692
693 if (tb[NL80211_KEY_SEQ]) {
694 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
695 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
696 }
697
698 if (tb[NL80211_KEY_CIPHER])
699 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
700
701 if (tb[NL80211_KEY_TYPE]) {
702 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
703 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
704 return -EINVAL;
705 }
706
707 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
708 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
709 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
710 tb[NL80211_KEY_DEFAULT_TYPES],
711 nl80211_key_default_policy);
712 if (err)
713 return err;
714
715 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
716 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
717 }
718
719 return 0;
720 }
721
722 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
723 {
724 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
725 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
726 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
727 }
728
729 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
730 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
731 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
732 }
733
734 if (info->attrs[NL80211_ATTR_KEY_IDX])
735 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
736
737 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
738 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
739
740 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
741 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
742
743 if (k->def) {
744 k->def_uni = true;
745 k->def_multi = true;
746 }
747 if (k->defmgmt)
748 k->def_multi = true;
749
750 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
751 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
752 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
753 return -EINVAL;
754 }
755
756 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
757 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
758 int err = nla_parse_nested(
759 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
760 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
761 nl80211_key_default_policy);
762 if (err)
763 return err;
764
765 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
766 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
767 }
768
769 return 0;
770 }
771
772 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
773 {
774 int err;
775
776 memset(k, 0, sizeof(*k));
777 k->idx = -1;
778 k->type = -1;
779
780 if (info->attrs[NL80211_ATTR_KEY])
781 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
782 else
783 err = nl80211_parse_key_old(info, k);
784
785 if (err)
786 return err;
787
788 if (k->def && k->defmgmt)
789 return -EINVAL;
790
791 if (k->defmgmt) {
792 if (k->def_uni || !k->def_multi)
793 return -EINVAL;
794 }
795
796 if (k->idx != -1) {
797 if (k->defmgmt) {
798 if (k->idx < 4 || k->idx > 5)
799 return -EINVAL;
800 } else if (k->def) {
801 if (k->idx < 0 || k->idx > 3)
802 return -EINVAL;
803 } else {
804 if (k->idx < 0 || k->idx > 5)
805 return -EINVAL;
806 }
807 }
808
809 return 0;
810 }
811
812 static struct cfg80211_cached_keys *
813 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
814 struct nlattr *keys, bool *no_ht)
815 {
816 struct key_parse parse;
817 struct nlattr *key;
818 struct cfg80211_cached_keys *result;
819 int rem, err, def = 0;
820
821 result = kzalloc(sizeof(*result), GFP_KERNEL);
822 if (!result)
823 return ERR_PTR(-ENOMEM);
824
825 result->def = -1;
826 result->defmgmt = -1;
827
828 nla_for_each_nested(key, keys, rem) {
829 memset(&parse, 0, sizeof(parse));
830 parse.idx = -1;
831
832 err = nl80211_parse_key_new(key, &parse);
833 if (err)
834 goto error;
835 err = -EINVAL;
836 if (!parse.p.key)
837 goto error;
838 if (parse.idx < 0 || parse.idx > 4)
839 goto error;
840 if (parse.def) {
841 if (def)
842 goto error;
843 def = 1;
844 result->def = parse.idx;
845 if (!parse.def_uni || !parse.def_multi)
846 goto error;
847 } else if (parse.defmgmt)
848 goto error;
849 err = cfg80211_validate_key_settings(rdev, &parse.p,
850 parse.idx, false, NULL);
851 if (err)
852 goto error;
853 result->params[parse.idx].cipher = parse.p.cipher;
854 result->params[parse.idx].key_len = parse.p.key_len;
855 result->params[parse.idx].key = result->data[parse.idx];
856 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
857
858 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
859 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
860 if (no_ht)
861 *no_ht = true;
862 }
863 }
864
865 return result;
866 error:
867 kfree(result);
868 return ERR_PTR(err);
869 }
870
871 static int nl80211_key_allowed(struct wireless_dev *wdev)
872 {
873 ASSERT_WDEV_LOCK(wdev);
874
875 switch (wdev->iftype) {
876 case NL80211_IFTYPE_AP:
877 case NL80211_IFTYPE_AP_VLAN:
878 case NL80211_IFTYPE_P2P_GO:
879 case NL80211_IFTYPE_MESH_POINT:
880 break;
881 case NL80211_IFTYPE_ADHOC:
882 case NL80211_IFTYPE_STATION:
883 case NL80211_IFTYPE_P2P_CLIENT:
884 if (!wdev->current_bss)
885 return -ENOLINK;
886 break;
887 default:
888 return -EINVAL;
889 }
890
891 return 0;
892 }
893
894 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
895 struct nlattr *tb)
896 {
897 struct ieee80211_channel *chan;
898
899 if (tb == NULL)
900 return NULL;
901 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
902 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
903 return NULL;
904 return chan;
905 }
906
907 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
908 {
909 struct nlattr *nl_modes = nla_nest_start(msg, attr);
910 int i;
911
912 if (!nl_modes)
913 goto nla_put_failure;
914
915 i = 0;
916 while (ifmodes) {
917 if ((ifmodes & 1) && nla_put_flag(msg, i))
918 goto nla_put_failure;
919 ifmodes >>= 1;
920 i++;
921 }
922
923 nla_nest_end(msg, nl_modes);
924 return 0;
925
926 nla_put_failure:
927 return -ENOBUFS;
928 }
929
930 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
931 struct sk_buff *msg,
932 bool large)
933 {
934 struct nlattr *nl_combis;
935 int i, j;
936
937 nl_combis = nla_nest_start(msg,
938 NL80211_ATTR_INTERFACE_COMBINATIONS);
939 if (!nl_combis)
940 goto nla_put_failure;
941
942 for (i = 0; i < wiphy->n_iface_combinations; i++) {
943 const struct ieee80211_iface_combination *c;
944 struct nlattr *nl_combi, *nl_limits;
945
946 c = &wiphy->iface_combinations[i];
947
948 nl_combi = nla_nest_start(msg, i + 1);
949 if (!nl_combi)
950 goto nla_put_failure;
951
952 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
953 if (!nl_limits)
954 goto nla_put_failure;
955
956 for (j = 0; j < c->n_limits; j++) {
957 struct nlattr *nl_limit;
958
959 nl_limit = nla_nest_start(msg, j + 1);
960 if (!nl_limit)
961 goto nla_put_failure;
962 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
963 c->limits[j].max))
964 goto nla_put_failure;
965 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
966 c->limits[j].types))
967 goto nla_put_failure;
968 nla_nest_end(msg, nl_limit);
969 }
970
971 nla_nest_end(msg, nl_limits);
972
973 if (c->beacon_int_infra_match &&
974 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
975 goto nla_put_failure;
976 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
977 c->num_different_channels) ||
978 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
979 c->max_interfaces))
980 goto nla_put_failure;
981 if (large &&
982 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
983 c->radar_detect_widths) ||
984 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
985 c->radar_detect_regions)))
986 goto nla_put_failure;
987
988 nla_nest_end(msg, nl_combi);
989 }
990
991 nla_nest_end(msg, nl_combis);
992
993 return 0;
994 nla_put_failure:
995 return -ENOBUFS;
996 }
997
998 #ifdef CONFIG_PM
999 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1000 struct sk_buff *msg)
1001 {
1002 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1003 struct nlattr *nl_tcp;
1004
1005 if (!tcp)
1006 return 0;
1007
1008 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1009 if (!nl_tcp)
1010 return -ENOBUFS;
1011
1012 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1013 tcp->data_payload_max))
1014 return -ENOBUFS;
1015
1016 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1017 tcp->data_payload_max))
1018 return -ENOBUFS;
1019
1020 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1021 return -ENOBUFS;
1022
1023 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1024 sizeof(*tcp->tok), tcp->tok))
1025 return -ENOBUFS;
1026
1027 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1028 tcp->data_interval_max))
1029 return -ENOBUFS;
1030
1031 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1032 tcp->wake_payload_max))
1033 return -ENOBUFS;
1034
1035 nla_nest_end(msg, nl_tcp);
1036 return 0;
1037 }
1038
1039 static int nl80211_send_wowlan(struct sk_buff *msg,
1040 struct cfg80211_registered_device *rdev,
1041 bool large)
1042 {
1043 struct nlattr *nl_wowlan;
1044
1045 if (!rdev->wiphy.wowlan)
1046 return 0;
1047
1048 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1049 if (!nl_wowlan)
1050 return -ENOBUFS;
1051
1052 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1053 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1054 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1055 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1056 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1057 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1058 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1059 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1060 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1061 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1062 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1068 return -ENOBUFS;
1069
1070 if (rdev->wiphy.wowlan->n_patterns) {
1071 struct nl80211_pattern_support pat = {
1072 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1073 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1074 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1075 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1076 };
1077
1078 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1079 sizeof(pat), &pat))
1080 return -ENOBUFS;
1081 }
1082
1083 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1084 return -ENOBUFS;
1085
1086 nla_nest_end(msg, nl_wowlan);
1087
1088 return 0;
1089 }
1090 #endif
1091
1092 static int nl80211_send_coalesce(struct sk_buff *msg,
1093 struct cfg80211_registered_device *rdev)
1094 {
1095 struct nl80211_coalesce_rule_support rule;
1096
1097 if (!rdev->wiphy.coalesce)
1098 return 0;
1099
1100 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1101 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1102 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1103 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1104 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1105 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1106
1107 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1108 return -ENOBUFS;
1109
1110 return 0;
1111 }
1112
1113 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1114 struct ieee80211_supported_band *sband)
1115 {
1116 struct nlattr *nl_rates, *nl_rate;
1117 struct ieee80211_rate *rate;
1118 int i;
1119
1120 /* add HT info */
1121 if (sband->ht_cap.ht_supported &&
1122 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1123 sizeof(sband->ht_cap.mcs),
1124 &sband->ht_cap.mcs) ||
1125 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1126 sband->ht_cap.cap) ||
1127 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1128 sband->ht_cap.ampdu_factor) ||
1129 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1130 sband->ht_cap.ampdu_density)))
1131 return -ENOBUFS;
1132
1133 /* add VHT info */
1134 if (sband->vht_cap.vht_supported &&
1135 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1136 sizeof(sband->vht_cap.vht_mcs),
1137 &sband->vht_cap.vht_mcs) ||
1138 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1139 sband->vht_cap.cap)))
1140 return -ENOBUFS;
1141
1142 /* add bitrates */
1143 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1144 if (!nl_rates)
1145 return -ENOBUFS;
1146
1147 for (i = 0; i < sband->n_bitrates; i++) {
1148 nl_rate = nla_nest_start(msg, i);
1149 if (!nl_rate)
1150 return -ENOBUFS;
1151
1152 rate = &sband->bitrates[i];
1153 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1154 rate->bitrate))
1155 return -ENOBUFS;
1156 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1157 nla_put_flag(msg,
1158 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1159 return -ENOBUFS;
1160
1161 nla_nest_end(msg, nl_rate);
1162 }
1163
1164 nla_nest_end(msg, nl_rates);
1165
1166 return 0;
1167 }
1168
1169 static int
1170 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1171 const struct ieee80211_txrx_stypes *mgmt_stypes)
1172 {
1173 u16 stypes;
1174 struct nlattr *nl_ftypes, *nl_ifs;
1175 enum nl80211_iftype ift;
1176 int i;
1177
1178 if (!mgmt_stypes)
1179 return 0;
1180
1181 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1182 if (!nl_ifs)
1183 return -ENOBUFS;
1184
1185 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1186 nl_ftypes = nla_nest_start(msg, ift);
1187 if (!nl_ftypes)
1188 return -ENOBUFS;
1189 i = 0;
1190 stypes = mgmt_stypes[ift].tx;
1191 while (stypes) {
1192 if ((stypes & 1) &&
1193 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1194 (i << 4) | IEEE80211_FTYPE_MGMT))
1195 return -ENOBUFS;
1196 stypes >>= 1;
1197 i++;
1198 }
1199 nla_nest_end(msg, nl_ftypes);
1200 }
1201
1202 nla_nest_end(msg, nl_ifs);
1203
1204 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1205 if (!nl_ifs)
1206 return -ENOBUFS;
1207
1208 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1209 nl_ftypes = nla_nest_start(msg, ift);
1210 if (!nl_ftypes)
1211 return -ENOBUFS;
1212 i = 0;
1213 stypes = mgmt_stypes[ift].rx;
1214 while (stypes) {
1215 if ((stypes & 1) &&
1216 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1217 (i << 4) | IEEE80211_FTYPE_MGMT))
1218 return -ENOBUFS;
1219 stypes >>= 1;
1220 i++;
1221 }
1222 nla_nest_end(msg, nl_ftypes);
1223 }
1224 nla_nest_end(msg, nl_ifs);
1225
1226 return 0;
1227 }
1228
1229 struct nl80211_dump_wiphy_state {
1230 s64 filter_wiphy;
1231 long start;
1232 long split_start, band_start, chan_start;
1233 bool split;
1234 };
1235
1236 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1237 enum nl80211_commands cmd,
1238 struct sk_buff *msg, u32 portid, u32 seq,
1239 int flags, struct nl80211_dump_wiphy_state *state)
1240 {
1241 void *hdr;
1242 struct nlattr *nl_bands, *nl_band;
1243 struct nlattr *nl_freqs, *nl_freq;
1244 struct nlattr *nl_cmds;
1245 enum ieee80211_band band;
1246 struct ieee80211_channel *chan;
1247 int i;
1248 const struct ieee80211_txrx_stypes *mgmt_stypes =
1249 rdev->wiphy.mgmt_stypes;
1250 u32 features;
1251
1252 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1253 if (!hdr)
1254 return -ENOBUFS;
1255
1256 if (WARN_ON(!state))
1257 return -EINVAL;
1258
1259 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1260 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1261 wiphy_name(&rdev->wiphy)) ||
1262 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1263 cfg80211_rdev_list_generation))
1264 goto nla_put_failure;
1265
1266 if (cmd != NL80211_CMD_NEW_WIPHY)
1267 goto finish;
1268
1269 switch (state->split_start) {
1270 case 0:
1271 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1272 rdev->wiphy.retry_short) ||
1273 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1274 rdev->wiphy.retry_long) ||
1275 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1276 rdev->wiphy.frag_threshold) ||
1277 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1278 rdev->wiphy.rts_threshold) ||
1279 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1280 rdev->wiphy.coverage_class) ||
1281 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1282 rdev->wiphy.max_scan_ssids) ||
1283 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1284 rdev->wiphy.max_sched_scan_ssids) ||
1285 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1286 rdev->wiphy.max_scan_ie_len) ||
1287 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1288 rdev->wiphy.max_sched_scan_ie_len) ||
1289 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1290 rdev->wiphy.max_match_sets))
1291 goto nla_put_failure;
1292
1293 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1294 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1295 goto nla_put_failure;
1296 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1297 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1298 goto nla_put_failure;
1299 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1300 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1301 goto nla_put_failure;
1302 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1303 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1304 goto nla_put_failure;
1305 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1306 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1307 goto nla_put_failure;
1308 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1309 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1310 goto nla_put_failure;
1311 state->split_start++;
1312 if (state->split)
1313 break;
1314 case 1:
1315 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1316 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1317 rdev->wiphy.cipher_suites))
1318 goto nla_put_failure;
1319
1320 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1321 rdev->wiphy.max_num_pmkids))
1322 goto nla_put_failure;
1323
1324 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1325 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1326 goto nla_put_failure;
1327
1328 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1329 rdev->wiphy.available_antennas_tx) ||
1330 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1331 rdev->wiphy.available_antennas_rx))
1332 goto nla_put_failure;
1333
1334 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1335 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1336 rdev->wiphy.probe_resp_offload))
1337 goto nla_put_failure;
1338
1339 if ((rdev->wiphy.available_antennas_tx ||
1340 rdev->wiphy.available_antennas_rx) &&
1341 rdev->ops->get_antenna) {
1342 u32 tx_ant = 0, rx_ant = 0;
1343 int res;
1344 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1345 if (!res) {
1346 if (nla_put_u32(msg,
1347 NL80211_ATTR_WIPHY_ANTENNA_TX,
1348 tx_ant) ||
1349 nla_put_u32(msg,
1350 NL80211_ATTR_WIPHY_ANTENNA_RX,
1351 rx_ant))
1352 goto nla_put_failure;
1353 }
1354 }
1355
1356 state->split_start++;
1357 if (state->split)
1358 break;
1359 case 2:
1360 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1361 rdev->wiphy.interface_modes))
1362 goto nla_put_failure;
1363 state->split_start++;
1364 if (state->split)
1365 break;
1366 case 3:
1367 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1368 if (!nl_bands)
1369 goto nla_put_failure;
1370
1371 for (band = state->band_start;
1372 band < IEEE80211_NUM_BANDS; band++) {
1373 struct ieee80211_supported_band *sband;
1374
1375 sband = rdev->wiphy.bands[band];
1376
1377 if (!sband)
1378 continue;
1379
1380 nl_band = nla_nest_start(msg, band);
1381 if (!nl_band)
1382 goto nla_put_failure;
1383
1384 switch (state->chan_start) {
1385 case 0:
1386 if (nl80211_send_band_rateinfo(msg, sband))
1387 goto nla_put_failure;
1388 state->chan_start++;
1389 if (state->split)
1390 break;
1391 default:
1392 /* add frequencies */
1393 nl_freqs = nla_nest_start(
1394 msg, NL80211_BAND_ATTR_FREQS);
1395 if (!nl_freqs)
1396 goto nla_put_failure;
1397
1398 for (i = state->chan_start - 1;
1399 i < sband->n_channels;
1400 i++) {
1401 nl_freq = nla_nest_start(msg, i);
1402 if (!nl_freq)
1403 goto nla_put_failure;
1404
1405 chan = &sband->channels[i];
1406
1407 if (nl80211_msg_put_channel(
1408 msg, chan,
1409 state->split))
1410 goto nla_put_failure;
1411
1412 nla_nest_end(msg, nl_freq);
1413 if (state->split)
1414 break;
1415 }
1416 if (i < sband->n_channels)
1417 state->chan_start = i + 2;
1418 else
1419 state->chan_start = 0;
1420 nla_nest_end(msg, nl_freqs);
1421 }
1422
1423 nla_nest_end(msg, nl_band);
1424
1425 if (state->split) {
1426 /* start again here */
1427 if (state->chan_start)
1428 band--;
1429 break;
1430 }
1431 }
1432 nla_nest_end(msg, nl_bands);
1433
1434 if (band < IEEE80211_NUM_BANDS)
1435 state->band_start = band + 1;
1436 else
1437 state->band_start = 0;
1438
1439 /* if bands & channels are done, continue outside */
1440 if (state->band_start == 0 && state->chan_start == 0)
1441 state->split_start++;
1442 if (state->split)
1443 break;
1444 case 4:
1445 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1446 if (!nl_cmds)
1447 goto nla_put_failure;
1448
1449 i = 0;
1450 #define CMD(op, n) \
1451 do { \
1452 if (rdev->ops->op) { \
1453 i++; \
1454 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1455 goto nla_put_failure; \
1456 } \
1457 } while (0)
1458
1459 CMD(add_virtual_intf, NEW_INTERFACE);
1460 CMD(change_virtual_intf, SET_INTERFACE);
1461 CMD(add_key, NEW_KEY);
1462 CMD(start_ap, START_AP);
1463 CMD(add_station, NEW_STATION);
1464 CMD(add_mpath, NEW_MPATH);
1465 CMD(update_mesh_config, SET_MESH_CONFIG);
1466 CMD(change_bss, SET_BSS);
1467 CMD(auth, AUTHENTICATE);
1468 CMD(assoc, ASSOCIATE);
1469 CMD(deauth, DEAUTHENTICATE);
1470 CMD(disassoc, DISASSOCIATE);
1471 CMD(join_ibss, JOIN_IBSS);
1472 CMD(join_mesh, JOIN_MESH);
1473 CMD(set_pmksa, SET_PMKSA);
1474 CMD(del_pmksa, DEL_PMKSA);
1475 CMD(flush_pmksa, FLUSH_PMKSA);
1476 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1477 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1478 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1479 CMD(mgmt_tx, FRAME);
1480 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1481 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1482 i++;
1483 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1484 goto nla_put_failure;
1485 }
1486 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1487 rdev->ops->join_mesh) {
1488 i++;
1489 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1490 goto nla_put_failure;
1491 }
1492 CMD(set_wds_peer, SET_WDS_PEER);
1493 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1494 CMD(tdls_mgmt, TDLS_MGMT);
1495 CMD(tdls_oper, TDLS_OPER);
1496 }
1497 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1498 CMD(sched_scan_start, START_SCHED_SCAN);
1499 CMD(probe_client, PROBE_CLIENT);
1500 CMD(set_noack_map, SET_NOACK_MAP);
1501 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1502 i++;
1503 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1504 goto nla_put_failure;
1505 }
1506 CMD(start_p2p_device, START_P2P_DEVICE);
1507 CMD(set_mcast_rate, SET_MCAST_RATE);
1508 #ifdef CONFIG_NL80211_TESTMODE
1509 CMD(testmode_cmd, TESTMODE);
1510 #endif
1511 if (state->split) {
1512 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1513 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1514 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1515 CMD(channel_switch, CHANNEL_SWITCH);
1516 CMD(set_qos_map, SET_QOS_MAP);
1517 if (rdev->wiphy.flags &
1518 WIPHY_FLAG_SUPPORTS_WMM_ADMISSION)
1519 CMD(add_tx_ts, ADD_TX_TS);
1520 }
1521 /* add into the if now */
1522 #undef CMD
1523
1524 if (rdev->ops->connect || rdev->ops->auth) {
1525 i++;
1526 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1527 goto nla_put_failure;
1528 }
1529
1530 if (rdev->ops->disconnect || rdev->ops->deauth) {
1531 i++;
1532 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1533 goto nla_put_failure;
1534 }
1535
1536 nla_nest_end(msg, nl_cmds);
1537 state->split_start++;
1538 if (state->split)
1539 break;
1540 case 5:
1541 if (rdev->ops->remain_on_channel &&
1542 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1543 nla_put_u32(msg,
1544 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1545 rdev->wiphy.max_remain_on_channel_duration))
1546 goto nla_put_failure;
1547
1548 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1549 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1550 goto nla_put_failure;
1551
1552 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1553 goto nla_put_failure;
1554 state->split_start++;
1555 if (state->split)
1556 break;
1557 case 6:
1558 #ifdef CONFIG_PM
1559 if (nl80211_send_wowlan(msg, rdev, state->split))
1560 goto nla_put_failure;
1561 state->split_start++;
1562 if (state->split)
1563 break;
1564 #else
1565 state->split_start++;
1566 #endif
1567 case 7:
1568 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1569 rdev->wiphy.software_iftypes))
1570 goto nla_put_failure;
1571
1572 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1573 state->split))
1574 goto nla_put_failure;
1575
1576 state->split_start++;
1577 if (state->split)
1578 break;
1579 case 8:
1580 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1581 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1582 rdev->wiphy.ap_sme_capa))
1583 goto nla_put_failure;
1584
1585 features = rdev->wiphy.features;
1586 /*
1587 * We can only add the per-channel limit information if the
1588 * dump is split, otherwise it makes it too big. Therefore
1589 * only advertise it in that case.
1590 */
1591 if (state->split)
1592 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1593 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1594 goto nla_put_failure;
1595
1596 if (rdev->wiphy.ht_capa_mod_mask &&
1597 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1598 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1599 rdev->wiphy.ht_capa_mod_mask))
1600 goto nla_put_failure;
1601
1602 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1603 rdev->wiphy.max_acl_mac_addrs &&
1604 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1605 rdev->wiphy.max_acl_mac_addrs))
1606 goto nla_put_failure;
1607
1608 /*
1609 * Any information below this point is only available to
1610 * applications that can deal with it being split. This
1611 * helps ensure that newly added capabilities don't break
1612 * older tools by overrunning their buffers.
1613 *
1614 * We still increment split_start so that in the split
1615 * case we'll continue with more data in the next round,
1616 * but break unconditionally so unsplit data stops here.
1617 */
1618 state->split_start++;
1619 break;
1620 case 9:
1621 if (rdev->wiphy.extended_capabilities &&
1622 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1623 rdev->wiphy.extended_capabilities_len,
1624 rdev->wiphy.extended_capabilities) ||
1625 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1626 rdev->wiphy.extended_capabilities_len,
1627 rdev->wiphy.extended_capabilities_mask)))
1628 goto nla_put_failure;
1629
1630 if (rdev->wiphy.vht_capa_mod_mask &&
1631 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1632 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1633 rdev->wiphy.vht_capa_mod_mask))
1634 goto nla_put_failure;
1635
1636 state->split_start++;
1637 break;
1638 case 10:
1639 if (nl80211_send_coalesce(msg, rdev))
1640 goto nla_put_failure;
1641
1642 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1643 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1644 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1645 goto nla_put_failure;
1646
1647 if (rdev->wiphy.max_ap_assoc_sta &&
1648 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1649 rdev->wiphy.max_ap_assoc_sta))
1650 goto nla_put_failure;
1651
1652 state->split_start++;
1653 break;
1654 case 11:
1655 if (rdev->wiphy.n_vendor_commands) {
1656 const struct nl80211_vendor_cmd_info *info;
1657 struct nlattr *nested;
1658
1659 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1660 if (!nested)
1661 goto nla_put_failure;
1662
1663 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1664 info = &rdev->wiphy.vendor_commands[i].info;
1665 if (nla_put(msg, i + 1, sizeof(*info), info))
1666 goto nla_put_failure;
1667 }
1668 nla_nest_end(msg, nested);
1669 }
1670
1671 if (rdev->wiphy.n_vendor_events) {
1672 const struct nl80211_vendor_cmd_info *info;
1673 struct nlattr *nested;
1674
1675 nested = nla_nest_start(msg,
1676 NL80211_ATTR_VENDOR_EVENTS);
1677 if (!nested)
1678 goto nla_put_failure;
1679
1680 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1681 info = &rdev->wiphy.vendor_events[i];
1682 if (nla_put(msg, i + 1, sizeof(*info), info))
1683 goto nla_put_failure;
1684 }
1685 nla_nest_end(msg, nested);
1686 }
1687 state->split_start++;
1688 break;
1689 case 12:
1690 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1691 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1692 rdev->wiphy.max_num_csa_counters))
1693 goto nla_put_failure;
1694
1695 /* done */
1696 state->split_start = 0;
1697 break;
1698 }
1699 finish:
1700 return genlmsg_end(msg, hdr);
1701
1702 nla_put_failure:
1703 genlmsg_cancel(msg, hdr);
1704 return -EMSGSIZE;
1705 }
1706
1707 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1708 struct netlink_callback *cb,
1709 struct nl80211_dump_wiphy_state *state)
1710 {
1711 struct nlattr **tb = nl80211_fam.attrbuf;
1712 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1713 tb, nl80211_fam.maxattr, nl80211_policy);
1714 /* ignore parse errors for backward compatibility */
1715 if (ret)
1716 return 0;
1717
1718 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1719 if (tb[NL80211_ATTR_WIPHY])
1720 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1721 if (tb[NL80211_ATTR_WDEV])
1722 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1723 if (tb[NL80211_ATTR_IFINDEX]) {
1724 struct net_device *netdev;
1725 struct cfg80211_registered_device *rdev;
1726 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1727
1728 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1729 if (!netdev)
1730 return -ENODEV;
1731 if (netdev->ieee80211_ptr) {
1732 rdev = wiphy_to_rdev(
1733 netdev->ieee80211_ptr->wiphy);
1734 state->filter_wiphy = rdev->wiphy_idx;
1735 }
1736 }
1737
1738 return 0;
1739 }
1740
1741 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1742 {
1743 int idx = 0, ret;
1744 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1745 struct cfg80211_registered_device *rdev;
1746
1747 rtnl_lock();
1748 if (!state) {
1749 state = kzalloc(sizeof(*state), GFP_KERNEL);
1750 if (!state) {
1751 rtnl_unlock();
1752 return -ENOMEM;
1753 }
1754 state->filter_wiphy = -1;
1755 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1756 if (ret) {
1757 kfree(state);
1758 rtnl_unlock();
1759 return ret;
1760 }
1761 cb->args[0] = (long)state;
1762 }
1763
1764 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1765 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1766 continue;
1767 if (++idx <= state->start)
1768 continue;
1769 if (state->filter_wiphy != -1 &&
1770 state->filter_wiphy != rdev->wiphy_idx)
1771 continue;
1772 /* attempt to fit multiple wiphy data chunks into the skb */
1773 do {
1774 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1775 skb,
1776 NETLINK_CB(cb->skb).portid,
1777 cb->nlh->nlmsg_seq,
1778 NLM_F_MULTI, state);
1779 if (ret < 0) {
1780 /*
1781 * If sending the wiphy data didn't fit (ENOBUFS
1782 * or EMSGSIZE returned), this SKB is still
1783 * empty (so it's not too big because another
1784 * wiphy dataset is already in the skb) and
1785 * we've not tried to adjust the dump allocation
1786 * yet ... then adjust the alloc size to be
1787 * bigger, and return 1 but with the empty skb.
1788 * This results in an empty message being RX'ed
1789 * in userspace, but that is ignored.
1790 *
1791 * We can then retry with the larger buffer.
1792 */
1793 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1794 !skb->len && !state->split &&
1795 cb->min_dump_alloc < 4096) {
1796 cb->min_dump_alloc = 4096;
1797 state->split_start = 0;
1798 rtnl_unlock();
1799 return 1;
1800 }
1801 idx--;
1802 break;
1803 }
1804 } while (state->split_start > 0);
1805 break;
1806 }
1807 rtnl_unlock();
1808
1809 state->start = idx;
1810
1811 return skb->len;
1812 }
1813
1814 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1815 {
1816 kfree((void *)cb->args[0]);
1817 return 0;
1818 }
1819
1820 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1821 {
1822 struct sk_buff *msg;
1823 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1824 struct nl80211_dump_wiphy_state state = {};
1825
1826 msg = nlmsg_new(4096, GFP_KERNEL);
1827 if (!msg)
1828 return -ENOMEM;
1829
1830 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1831 info->snd_portid, info->snd_seq, 0,
1832 &state) < 0) {
1833 nlmsg_free(msg);
1834 return -ENOBUFS;
1835 }
1836
1837 return genlmsg_reply(msg, info);
1838 }
1839
1840 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1841 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1842 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1843 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1844 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1845 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1846 };
1847
1848 static int parse_txq_params(struct nlattr *tb[],
1849 struct ieee80211_txq_params *txq_params)
1850 {
1851 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1852 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1853 !tb[NL80211_TXQ_ATTR_AIFS])
1854 return -EINVAL;
1855
1856 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1857 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1858 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1859 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1860 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1861
1862 if (txq_params->ac >= NL80211_NUM_ACS)
1863 return -EINVAL;
1864
1865 return 0;
1866 }
1867
1868 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1869 {
1870 /*
1871 * You can only set the channel explicitly for WDS interfaces,
1872 * all others have their channel managed via their respective
1873 * "establish a connection" command (connect, join, ...)
1874 *
1875 * For AP/GO and mesh mode, the channel can be set with the
1876 * channel userspace API, but is only stored and passed to the
1877 * low-level driver when the AP starts or the mesh is joined.
1878 * This is for backward compatibility, userspace can also give
1879 * the channel in the start-ap or join-mesh commands instead.
1880 *
1881 * Monitors are special as they are normally slaved to
1882 * whatever else is going on, so they have their own special
1883 * operation to set the monitor channel if possible.
1884 */
1885 return !wdev ||
1886 wdev->iftype == NL80211_IFTYPE_AP ||
1887 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1888 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1889 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1890 }
1891
1892 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1893 struct genl_info *info,
1894 struct cfg80211_chan_def *chandef)
1895 {
1896 u32 control_freq;
1897
1898 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1899 return -EINVAL;
1900
1901 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1902
1903 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1904 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1905 chandef->center_freq1 = control_freq;
1906 chandef->center_freq2 = 0;
1907
1908 /* Primary channel not allowed */
1909 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1910 return -EINVAL;
1911
1912 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1913 enum nl80211_channel_type chantype;
1914
1915 chantype = nla_get_u32(
1916 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1917
1918 switch (chantype) {
1919 case NL80211_CHAN_NO_HT:
1920 case NL80211_CHAN_HT20:
1921 case NL80211_CHAN_HT40PLUS:
1922 case NL80211_CHAN_HT40MINUS:
1923 cfg80211_chandef_create(chandef, chandef->chan,
1924 chantype);
1925 break;
1926 default:
1927 return -EINVAL;
1928 }
1929 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1930 chandef->width =
1931 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1932 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1933 chandef->center_freq1 =
1934 nla_get_u32(
1935 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1936 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1937 chandef->center_freq2 =
1938 nla_get_u32(
1939 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1940 }
1941
1942 if (!cfg80211_chandef_valid(chandef))
1943 return -EINVAL;
1944
1945 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1946 IEEE80211_CHAN_DISABLED))
1947 return -EINVAL;
1948
1949 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1950 chandef->width == NL80211_CHAN_WIDTH_10) &&
1951 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1952 return -EINVAL;
1953
1954 return 0;
1955 }
1956
1957 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1958 struct net_device *dev,
1959 struct genl_info *info)
1960 {
1961 struct cfg80211_chan_def chandef;
1962 int result;
1963 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1964 struct wireless_dev *wdev = NULL;
1965
1966 if (dev)
1967 wdev = dev->ieee80211_ptr;
1968 if (!nl80211_can_set_dev_channel(wdev))
1969 return -EOPNOTSUPP;
1970 if (wdev)
1971 iftype = wdev->iftype;
1972
1973 result = nl80211_parse_chandef(rdev, info, &chandef);
1974 if (result)
1975 return result;
1976
1977 switch (iftype) {
1978 case NL80211_IFTYPE_AP:
1979 case NL80211_IFTYPE_P2P_GO:
1980 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1981 result = -EINVAL;
1982 break;
1983 }
1984 if (wdev->beacon_interval) {
1985 if (!dev || !rdev->ops->set_ap_chanwidth ||
1986 !(rdev->wiphy.features &
1987 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1988 result = -EBUSY;
1989 break;
1990 }
1991
1992 /* Only allow dynamic channel width changes */
1993 if (chandef.chan != wdev->preset_chandef.chan) {
1994 result = -EBUSY;
1995 break;
1996 }
1997 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
1998 if (result)
1999 break;
2000 }
2001 wdev->preset_chandef = chandef;
2002 result = 0;
2003 break;
2004 case NL80211_IFTYPE_MESH_POINT:
2005 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2006 break;
2007 case NL80211_IFTYPE_MONITOR:
2008 result = cfg80211_set_monitor_channel(rdev, &chandef);
2009 break;
2010 default:
2011 result = -EINVAL;
2012 }
2013
2014 return result;
2015 }
2016
2017 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2018 {
2019 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2020 struct net_device *netdev = info->user_ptr[1];
2021
2022 return __nl80211_set_channel(rdev, netdev, info);
2023 }
2024
2025 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2026 {
2027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2028 struct net_device *dev = info->user_ptr[1];
2029 struct wireless_dev *wdev = dev->ieee80211_ptr;
2030 const u8 *bssid;
2031
2032 if (!info->attrs[NL80211_ATTR_MAC])
2033 return -EINVAL;
2034
2035 if (netif_running(dev))
2036 return -EBUSY;
2037
2038 if (!rdev->ops->set_wds_peer)
2039 return -EOPNOTSUPP;
2040
2041 if (wdev->iftype != NL80211_IFTYPE_WDS)
2042 return -EOPNOTSUPP;
2043
2044 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2045 return rdev_set_wds_peer(rdev, dev, bssid);
2046 }
2047
2048
2049 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2050 {
2051 struct cfg80211_registered_device *rdev;
2052 struct net_device *netdev = NULL;
2053 struct wireless_dev *wdev;
2054 int result = 0, rem_txq_params = 0;
2055 struct nlattr *nl_txq_params;
2056 u32 changed;
2057 u8 retry_short = 0, retry_long = 0;
2058 u32 frag_threshold = 0, rts_threshold = 0;
2059 u8 coverage_class = 0;
2060
2061 ASSERT_RTNL();
2062
2063 /*
2064 * Try to find the wiphy and netdev. Normally this
2065 * function shouldn't need the netdev, but this is
2066 * done for backward compatibility -- previously
2067 * setting the channel was done per wiphy, but now
2068 * it is per netdev. Previous userland like hostapd
2069 * also passed a netdev to set_wiphy, so that it is
2070 * possible to let that go to the right netdev!
2071 */
2072
2073 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2074 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2075
2076 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2077 if (netdev && netdev->ieee80211_ptr)
2078 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2079 else
2080 netdev = NULL;
2081 }
2082
2083 if (!netdev) {
2084 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2085 info->attrs);
2086 if (IS_ERR(rdev))
2087 return PTR_ERR(rdev);
2088 wdev = NULL;
2089 netdev = NULL;
2090 result = 0;
2091 } else
2092 wdev = netdev->ieee80211_ptr;
2093
2094 /*
2095 * end workaround code, by now the rdev is available
2096 * and locked, and wdev may or may not be NULL.
2097 */
2098
2099 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2100 result = cfg80211_dev_rename(
2101 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2102
2103 if (result)
2104 return result;
2105
2106 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2107 struct ieee80211_txq_params txq_params;
2108 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2109
2110 if (!rdev->ops->set_txq_params)
2111 return -EOPNOTSUPP;
2112
2113 if (!netdev)
2114 return -EINVAL;
2115
2116 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2117 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2118 return -EINVAL;
2119
2120 if (!netif_running(netdev))
2121 return -ENETDOWN;
2122
2123 nla_for_each_nested(nl_txq_params,
2124 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2125 rem_txq_params) {
2126 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2127 nla_data(nl_txq_params),
2128 nla_len(nl_txq_params),
2129 txq_params_policy);
2130 if (result)
2131 return result;
2132 result = parse_txq_params(tb, &txq_params);
2133 if (result)
2134 return result;
2135
2136 result = rdev_set_txq_params(rdev, netdev,
2137 &txq_params);
2138 if (result)
2139 return result;
2140 }
2141 }
2142
2143 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2144 result = __nl80211_set_channel(
2145 rdev,
2146 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2147 info);
2148 if (result)
2149 return result;
2150 }
2151
2152 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2153 struct wireless_dev *txp_wdev = wdev;
2154 enum nl80211_tx_power_setting type;
2155 int idx, mbm = 0;
2156
2157 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2158 txp_wdev = NULL;
2159
2160 if (!rdev->ops->set_tx_power)
2161 return -EOPNOTSUPP;
2162
2163 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2164 type = nla_get_u32(info->attrs[idx]);
2165
2166 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2167 (type != NL80211_TX_POWER_AUTOMATIC))
2168 return -EINVAL;
2169
2170 if (type != NL80211_TX_POWER_AUTOMATIC) {
2171 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2172 mbm = nla_get_u32(info->attrs[idx]);
2173 }
2174
2175 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2176 if (result)
2177 return result;
2178 }
2179
2180 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2181 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2182 u32 tx_ant, rx_ant;
2183 if ((!rdev->wiphy.available_antennas_tx &&
2184 !rdev->wiphy.available_antennas_rx) ||
2185 !rdev->ops->set_antenna)
2186 return -EOPNOTSUPP;
2187
2188 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2189 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2190
2191 /* reject antenna configurations which don't match the
2192 * available antenna masks, except for the "all" mask */
2193 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2194 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2195 return -EINVAL;
2196
2197 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2198 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2199
2200 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2201 if (result)
2202 return result;
2203 }
2204
2205 changed = 0;
2206
2207 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2208 retry_short = nla_get_u8(
2209 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2210 if (retry_short == 0)
2211 return -EINVAL;
2212
2213 changed |= WIPHY_PARAM_RETRY_SHORT;
2214 }
2215
2216 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2217 retry_long = nla_get_u8(
2218 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2219 if (retry_long == 0)
2220 return -EINVAL;
2221
2222 changed |= WIPHY_PARAM_RETRY_LONG;
2223 }
2224
2225 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2226 frag_threshold = nla_get_u32(
2227 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2228 if (frag_threshold < 256)
2229 return -EINVAL;
2230
2231 if (frag_threshold != (u32) -1) {
2232 /*
2233 * Fragments (apart from the last one) are required to
2234 * have even length. Make the fragmentation code
2235 * simpler by stripping LSB should someone try to use
2236 * odd threshold value.
2237 */
2238 frag_threshold &= ~0x1;
2239 }
2240 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2241 }
2242
2243 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2244 rts_threshold = nla_get_u32(
2245 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2246 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2247 }
2248
2249 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2250 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2251 return -EINVAL;
2252
2253 coverage_class = nla_get_u8(
2254 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2255 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2256 }
2257
2258 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2259 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2260 return -EOPNOTSUPP;
2261
2262 changed |= WIPHY_PARAM_DYN_ACK;
2263 }
2264
2265 if (changed) {
2266 u8 old_retry_short, old_retry_long;
2267 u32 old_frag_threshold, old_rts_threshold;
2268 u8 old_coverage_class;
2269
2270 if (!rdev->ops->set_wiphy_params)
2271 return -EOPNOTSUPP;
2272
2273 old_retry_short = rdev->wiphy.retry_short;
2274 old_retry_long = rdev->wiphy.retry_long;
2275 old_frag_threshold = rdev->wiphy.frag_threshold;
2276 old_rts_threshold = rdev->wiphy.rts_threshold;
2277 old_coverage_class = rdev->wiphy.coverage_class;
2278
2279 if (changed & WIPHY_PARAM_RETRY_SHORT)
2280 rdev->wiphy.retry_short = retry_short;
2281 if (changed & WIPHY_PARAM_RETRY_LONG)
2282 rdev->wiphy.retry_long = retry_long;
2283 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2284 rdev->wiphy.frag_threshold = frag_threshold;
2285 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2286 rdev->wiphy.rts_threshold = rts_threshold;
2287 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2288 rdev->wiphy.coverage_class = coverage_class;
2289
2290 result = rdev_set_wiphy_params(rdev, changed);
2291 if (result) {
2292 rdev->wiphy.retry_short = old_retry_short;
2293 rdev->wiphy.retry_long = old_retry_long;
2294 rdev->wiphy.frag_threshold = old_frag_threshold;
2295 rdev->wiphy.rts_threshold = old_rts_threshold;
2296 rdev->wiphy.coverage_class = old_coverage_class;
2297 }
2298 }
2299 return 0;
2300 }
2301
2302 static inline u64 wdev_id(struct wireless_dev *wdev)
2303 {
2304 return (u64)wdev->identifier |
2305 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2306 }
2307
2308 static int nl80211_send_chandef(struct sk_buff *msg,
2309 const struct cfg80211_chan_def *chandef)
2310 {
2311 WARN_ON(!cfg80211_chandef_valid(chandef));
2312
2313 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2314 chandef->chan->center_freq))
2315 return -ENOBUFS;
2316 switch (chandef->width) {
2317 case NL80211_CHAN_WIDTH_20_NOHT:
2318 case NL80211_CHAN_WIDTH_20:
2319 case NL80211_CHAN_WIDTH_40:
2320 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2321 cfg80211_get_chandef_type(chandef)))
2322 return -ENOBUFS;
2323 break;
2324 default:
2325 break;
2326 }
2327 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2328 return -ENOBUFS;
2329 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2330 return -ENOBUFS;
2331 if (chandef->center_freq2 &&
2332 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2333 return -ENOBUFS;
2334 return 0;
2335 }
2336
2337 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2338 struct cfg80211_registered_device *rdev,
2339 struct wireless_dev *wdev)
2340 {
2341 struct net_device *dev = wdev->netdev;
2342 void *hdr;
2343
2344 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2345 if (!hdr)
2346 return -1;
2347
2348 if (dev &&
2349 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2350 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2351 goto nla_put_failure;
2352
2353 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2354 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2355 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2356 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2357 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2358 rdev->devlist_generation ^
2359 (cfg80211_rdev_list_generation << 2)))
2360 goto nla_put_failure;
2361
2362 if (rdev->ops->get_channel) {
2363 int ret;
2364 struct cfg80211_chan_def chandef;
2365
2366 ret = rdev_get_channel(rdev, wdev, &chandef);
2367 if (ret == 0) {
2368 if (nl80211_send_chandef(msg, &chandef))
2369 goto nla_put_failure;
2370 }
2371 }
2372
2373 if (wdev->ssid_len) {
2374 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2375 goto nla_put_failure;
2376 }
2377
2378 return genlmsg_end(msg, hdr);
2379
2380 nla_put_failure:
2381 genlmsg_cancel(msg, hdr);
2382 return -EMSGSIZE;
2383 }
2384
2385 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2386 {
2387 int wp_idx = 0;
2388 int if_idx = 0;
2389 int wp_start = cb->args[0];
2390 int if_start = cb->args[1];
2391 struct cfg80211_registered_device *rdev;
2392 struct wireless_dev *wdev;
2393
2394 rtnl_lock();
2395 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2396 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2397 continue;
2398 if (wp_idx < wp_start) {
2399 wp_idx++;
2400 continue;
2401 }
2402 if_idx = 0;
2403
2404 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2405 if (if_idx < if_start) {
2406 if_idx++;
2407 continue;
2408 }
2409 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2410 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2411 rdev, wdev) < 0) {
2412 goto out;
2413 }
2414 if_idx++;
2415 }
2416
2417 wp_idx++;
2418 }
2419 out:
2420 rtnl_unlock();
2421
2422 cb->args[0] = wp_idx;
2423 cb->args[1] = if_idx;
2424
2425 return skb->len;
2426 }
2427
2428 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2429 {
2430 struct sk_buff *msg;
2431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2432 struct wireless_dev *wdev = info->user_ptr[1];
2433
2434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2435 if (!msg)
2436 return -ENOMEM;
2437
2438 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2439 rdev, wdev) < 0) {
2440 nlmsg_free(msg);
2441 return -ENOBUFS;
2442 }
2443
2444 return genlmsg_reply(msg, info);
2445 }
2446
2447 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2448 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2449 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2450 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2451 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2452 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2453 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2454 };
2455
2456 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2457 {
2458 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2459 int flag;
2460
2461 *mntrflags = 0;
2462
2463 if (!nla)
2464 return -EINVAL;
2465
2466 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2467 nla, mntr_flags_policy))
2468 return -EINVAL;
2469
2470 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2471 if (flags[flag])
2472 *mntrflags |= (1<<flag);
2473
2474 return 0;
2475 }
2476
2477 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2478 struct net_device *netdev, u8 use_4addr,
2479 enum nl80211_iftype iftype)
2480 {
2481 if (!use_4addr) {
2482 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2483 return -EBUSY;
2484 return 0;
2485 }
2486
2487 switch (iftype) {
2488 case NL80211_IFTYPE_AP_VLAN:
2489 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2490 return 0;
2491 break;
2492 case NL80211_IFTYPE_STATION:
2493 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2494 return 0;
2495 break;
2496 default:
2497 break;
2498 }
2499
2500 return -EOPNOTSUPP;
2501 }
2502
2503 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2504 {
2505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2506 struct vif_params params;
2507 int err;
2508 enum nl80211_iftype otype, ntype;
2509 struct net_device *dev = info->user_ptr[1];
2510 u32 _flags, *flags = NULL;
2511 bool change = false;
2512
2513 memset(&params, 0, sizeof(params));
2514
2515 otype = ntype = dev->ieee80211_ptr->iftype;
2516
2517 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2518 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2519 if (otype != ntype)
2520 change = true;
2521 if (ntype > NL80211_IFTYPE_MAX)
2522 return -EINVAL;
2523 }
2524
2525 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2526 struct wireless_dev *wdev = dev->ieee80211_ptr;
2527
2528 if (ntype != NL80211_IFTYPE_MESH_POINT)
2529 return -EINVAL;
2530 if (netif_running(dev))
2531 return -EBUSY;
2532
2533 wdev_lock(wdev);
2534 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2535 IEEE80211_MAX_MESH_ID_LEN);
2536 wdev->mesh_id_up_len =
2537 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2538 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2539 wdev->mesh_id_up_len);
2540 wdev_unlock(wdev);
2541 }
2542
2543 if (info->attrs[NL80211_ATTR_4ADDR]) {
2544 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2545 change = true;
2546 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2547 if (err)
2548 return err;
2549 } else {
2550 params.use_4addr = -1;
2551 }
2552
2553 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2554 if (ntype != NL80211_IFTYPE_MONITOR)
2555 return -EINVAL;
2556 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2557 &_flags);
2558 if (err)
2559 return err;
2560
2561 flags = &_flags;
2562 change = true;
2563 }
2564
2565 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2566 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2567 return -EOPNOTSUPP;
2568
2569 if (change)
2570 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2571 else
2572 err = 0;
2573
2574 if (!err && params.use_4addr != -1)
2575 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2576
2577 return err;
2578 }
2579
2580 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2581 {
2582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2583 struct vif_params params;
2584 struct wireless_dev *wdev;
2585 struct sk_buff *msg;
2586 int err;
2587 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2588 u32 flags;
2589
2590 /* to avoid failing a new interface creation due to pending removal */
2591 cfg80211_destroy_ifaces(rdev);
2592
2593 memset(&params, 0, sizeof(params));
2594
2595 if (!info->attrs[NL80211_ATTR_IFNAME])
2596 return -EINVAL;
2597
2598 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2599 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2600 if (type > NL80211_IFTYPE_MAX)
2601 return -EINVAL;
2602 }
2603
2604 if (!rdev->ops->add_virtual_intf ||
2605 !(rdev->wiphy.interface_modes & (1 << type)))
2606 return -EOPNOTSUPP;
2607
2608 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2609 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2610 ETH_ALEN);
2611 if (!is_valid_ether_addr(params.macaddr))
2612 return -EADDRNOTAVAIL;
2613 }
2614
2615 if (info->attrs[NL80211_ATTR_4ADDR]) {
2616 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2617 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2618 if (err)
2619 return err;
2620 }
2621
2622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2623 if (!msg)
2624 return -ENOMEM;
2625
2626 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2627 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2628 &flags);
2629
2630 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2631 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2632 return -EOPNOTSUPP;
2633
2634 wdev = rdev_add_virtual_intf(rdev,
2635 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2636 type, err ? NULL : &flags, &params);
2637 if (IS_ERR(wdev)) {
2638 nlmsg_free(msg);
2639 return PTR_ERR(wdev);
2640 }
2641
2642 if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2643 wdev->owner_nlportid = info->snd_portid;
2644
2645 switch (type) {
2646 case NL80211_IFTYPE_MESH_POINT:
2647 if (!info->attrs[NL80211_ATTR_MESH_ID])
2648 break;
2649 wdev_lock(wdev);
2650 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2651 IEEE80211_MAX_MESH_ID_LEN);
2652 wdev->mesh_id_up_len =
2653 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2654 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2655 wdev->mesh_id_up_len);
2656 wdev_unlock(wdev);
2657 break;
2658 case NL80211_IFTYPE_P2P_DEVICE:
2659 /*
2660 * P2P Device doesn't have a netdev, so doesn't go
2661 * through the netdev notifier and must be added here
2662 */
2663 mutex_init(&wdev->mtx);
2664 INIT_LIST_HEAD(&wdev->event_list);
2665 spin_lock_init(&wdev->event_lock);
2666 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2667 spin_lock_init(&wdev->mgmt_registrations_lock);
2668
2669 wdev->identifier = ++rdev->wdev_id;
2670 list_add_rcu(&wdev->list, &rdev->wdev_list);
2671 rdev->devlist_generation++;
2672 break;
2673 default:
2674 break;
2675 }
2676
2677 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2678 rdev, wdev) < 0) {
2679 nlmsg_free(msg);
2680 return -ENOBUFS;
2681 }
2682
2683 return genlmsg_reply(msg, info);
2684 }
2685
2686 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2687 {
2688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2689 struct wireless_dev *wdev = info->user_ptr[1];
2690
2691 if (!rdev->ops->del_virtual_intf)
2692 return -EOPNOTSUPP;
2693
2694 /*
2695 * If we remove a wireless device without a netdev then clear
2696 * user_ptr[1] so that nl80211_post_doit won't dereference it
2697 * to check if it needs to do dev_put(). Otherwise it crashes
2698 * since the wdev has been freed, unlike with a netdev where
2699 * we need the dev_put() for the netdev to really be freed.
2700 */
2701 if (!wdev->netdev)
2702 info->user_ptr[1] = NULL;
2703
2704 return rdev_del_virtual_intf(rdev, wdev);
2705 }
2706
2707 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2708 {
2709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2710 struct net_device *dev = info->user_ptr[1];
2711 u16 noack_map;
2712
2713 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2714 return -EINVAL;
2715
2716 if (!rdev->ops->set_noack_map)
2717 return -EOPNOTSUPP;
2718
2719 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2720
2721 return rdev_set_noack_map(rdev, dev, noack_map);
2722 }
2723
2724 struct get_key_cookie {
2725 struct sk_buff *msg;
2726 int error;
2727 int idx;
2728 };
2729
2730 static void get_key_callback(void *c, struct key_params *params)
2731 {
2732 struct nlattr *key;
2733 struct get_key_cookie *cookie = c;
2734
2735 if ((params->key &&
2736 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2737 params->key_len, params->key)) ||
2738 (params->seq &&
2739 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2740 params->seq_len, params->seq)) ||
2741 (params->cipher &&
2742 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2743 params->cipher)))
2744 goto nla_put_failure;
2745
2746 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2747 if (!key)
2748 goto nla_put_failure;
2749
2750 if ((params->key &&
2751 nla_put(cookie->msg, NL80211_KEY_DATA,
2752 params->key_len, params->key)) ||
2753 (params->seq &&
2754 nla_put(cookie->msg, NL80211_KEY_SEQ,
2755 params->seq_len, params->seq)) ||
2756 (params->cipher &&
2757 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2758 params->cipher)))
2759 goto nla_put_failure;
2760
2761 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2762 goto nla_put_failure;
2763
2764 nla_nest_end(cookie->msg, key);
2765
2766 return;
2767 nla_put_failure:
2768 cookie->error = 1;
2769 }
2770
2771 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2772 {
2773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2774 int err;
2775 struct net_device *dev = info->user_ptr[1];
2776 u8 key_idx = 0;
2777 const u8 *mac_addr = NULL;
2778 bool pairwise;
2779 struct get_key_cookie cookie = {
2780 .error = 0,
2781 };
2782 void *hdr;
2783 struct sk_buff *msg;
2784
2785 if (info->attrs[NL80211_ATTR_KEY_IDX])
2786 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2787
2788 if (key_idx > 5)
2789 return -EINVAL;
2790
2791 if (info->attrs[NL80211_ATTR_MAC])
2792 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2793
2794 pairwise = !!mac_addr;
2795 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2796 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2797 if (kt >= NUM_NL80211_KEYTYPES)
2798 return -EINVAL;
2799 if (kt != NL80211_KEYTYPE_GROUP &&
2800 kt != NL80211_KEYTYPE_PAIRWISE)
2801 return -EINVAL;
2802 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2803 }
2804
2805 if (!rdev->ops->get_key)
2806 return -EOPNOTSUPP;
2807
2808 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2809 if (!msg)
2810 return -ENOMEM;
2811
2812 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2813 NL80211_CMD_NEW_KEY);
2814 if (!hdr)
2815 goto nla_put_failure;
2816
2817 cookie.msg = msg;
2818 cookie.idx = key_idx;
2819
2820 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2821 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2822 goto nla_put_failure;
2823 if (mac_addr &&
2824 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2825 goto nla_put_failure;
2826
2827 if (pairwise && mac_addr &&
2828 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2829 return -ENOENT;
2830
2831 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2832 get_key_callback);
2833
2834 if (err)
2835 goto free_msg;
2836
2837 if (cookie.error)
2838 goto nla_put_failure;
2839
2840 genlmsg_end(msg, hdr);
2841 return genlmsg_reply(msg, info);
2842
2843 nla_put_failure:
2844 err = -ENOBUFS;
2845 free_msg:
2846 nlmsg_free(msg);
2847 return err;
2848 }
2849
2850 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2851 {
2852 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2853 struct key_parse key;
2854 int err;
2855 struct net_device *dev = info->user_ptr[1];
2856
2857 err = nl80211_parse_key(info, &key);
2858 if (err)
2859 return err;
2860
2861 if (key.idx < 0)
2862 return -EINVAL;
2863
2864 /* only support setting default key */
2865 if (!key.def && !key.defmgmt)
2866 return -EINVAL;
2867
2868 wdev_lock(dev->ieee80211_ptr);
2869
2870 if (key.def) {
2871 if (!rdev->ops->set_default_key) {
2872 err = -EOPNOTSUPP;
2873 goto out;
2874 }
2875
2876 err = nl80211_key_allowed(dev->ieee80211_ptr);
2877 if (err)
2878 goto out;
2879
2880 err = rdev_set_default_key(rdev, dev, key.idx,
2881 key.def_uni, key.def_multi);
2882
2883 if (err)
2884 goto out;
2885
2886 #ifdef CONFIG_CFG80211_WEXT
2887 dev->ieee80211_ptr->wext.default_key = key.idx;
2888 #endif
2889 } else {
2890 if (key.def_uni || !key.def_multi) {
2891 err = -EINVAL;
2892 goto out;
2893 }
2894
2895 if (!rdev->ops->set_default_mgmt_key) {
2896 err = -EOPNOTSUPP;
2897 goto out;
2898 }
2899
2900 err = nl80211_key_allowed(dev->ieee80211_ptr);
2901 if (err)
2902 goto out;
2903
2904 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2905 if (err)
2906 goto out;
2907
2908 #ifdef CONFIG_CFG80211_WEXT
2909 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2910 #endif
2911 }
2912
2913 out:
2914 wdev_unlock(dev->ieee80211_ptr);
2915
2916 return err;
2917 }
2918
2919 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2920 {
2921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2922 int err;
2923 struct net_device *dev = info->user_ptr[1];
2924 struct key_parse key;
2925 const u8 *mac_addr = NULL;
2926
2927 err = nl80211_parse_key(info, &key);
2928 if (err)
2929 return err;
2930
2931 if (!key.p.key)
2932 return -EINVAL;
2933
2934 if (info->attrs[NL80211_ATTR_MAC])
2935 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2936
2937 if (key.type == -1) {
2938 if (mac_addr)
2939 key.type = NL80211_KEYTYPE_PAIRWISE;
2940 else
2941 key.type = NL80211_KEYTYPE_GROUP;
2942 }
2943
2944 /* for now */
2945 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2946 key.type != NL80211_KEYTYPE_GROUP)
2947 return -EINVAL;
2948
2949 if (!rdev->ops->add_key)
2950 return -EOPNOTSUPP;
2951
2952 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2953 key.type == NL80211_KEYTYPE_PAIRWISE,
2954 mac_addr))
2955 return -EINVAL;
2956
2957 wdev_lock(dev->ieee80211_ptr);
2958 err = nl80211_key_allowed(dev->ieee80211_ptr);
2959 if (!err)
2960 err = rdev_add_key(rdev, dev, key.idx,
2961 key.type == NL80211_KEYTYPE_PAIRWISE,
2962 mac_addr, &key.p);
2963 wdev_unlock(dev->ieee80211_ptr);
2964
2965 return err;
2966 }
2967
2968 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2969 {
2970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2971 int err;
2972 struct net_device *dev = info->user_ptr[1];
2973 u8 *mac_addr = NULL;
2974 struct key_parse key;
2975
2976 err = nl80211_parse_key(info, &key);
2977 if (err)
2978 return err;
2979
2980 if (info->attrs[NL80211_ATTR_MAC])
2981 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2982
2983 if (key.type == -1) {
2984 if (mac_addr)
2985 key.type = NL80211_KEYTYPE_PAIRWISE;
2986 else
2987 key.type = NL80211_KEYTYPE_GROUP;
2988 }
2989
2990 /* for now */
2991 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2992 key.type != NL80211_KEYTYPE_GROUP)
2993 return -EINVAL;
2994
2995 if (!rdev->ops->del_key)
2996 return -EOPNOTSUPP;
2997
2998 wdev_lock(dev->ieee80211_ptr);
2999 err = nl80211_key_allowed(dev->ieee80211_ptr);
3000
3001 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3002 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3003 err = -ENOENT;
3004
3005 if (!err)
3006 err = rdev_del_key(rdev, dev, key.idx,
3007 key.type == NL80211_KEYTYPE_PAIRWISE,
3008 mac_addr);
3009
3010 #ifdef CONFIG_CFG80211_WEXT
3011 if (!err) {
3012 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3013 dev->ieee80211_ptr->wext.default_key = -1;
3014 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3015 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3016 }
3017 #endif
3018 wdev_unlock(dev->ieee80211_ptr);
3019
3020 return err;
3021 }
3022
3023 /* This function returns an error or the number of nested attributes */
3024 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3025 {
3026 struct nlattr *attr;
3027 int n_entries = 0, tmp;
3028
3029 nla_for_each_nested(attr, nl_attr, tmp) {
3030 if (nla_len(attr) != ETH_ALEN)
3031 return -EINVAL;
3032
3033 n_entries++;
3034 }
3035
3036 return n_entries;
3037 }
3038
3039 /*
3040 * This function parses ACL information and allocates memory for ACL data.
3041 * On successful return, the calling function is responsible to free the
3042 * ACL buffer returned by this function.
3043 */
3044 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3045 struct genl_info *info)
3046 {
3047 enum nl80211_acl_policy acl_policy;
3048 struct nlattr *attr;
3049 struct cfg80211_acl_data *acl;
3050 int i = 0, n_entries, tmp;
3051
3052 if (!wiphy->max_acl_mac_addrs)
3053 return ERR_PTR(-EOPNOTSUPP);
3054
3055 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3056 return ERR_PTR(-EINVAL);
3057
3058 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3059 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3060 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3061 return ERR_PTR(-EINVAL);
3062
3063 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3064 return ERR_PTR(-EINVAL);
3065
3066 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3067 if (n_entries < 0)
3068 return ERR_PTR(n_entries);
3069
3070 if (n_entries > wiphy->max_acl_mac_addrs)
3071 return ERR_PTR(-ENOTSUPP);
3072
3073 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3074 GFP_KERNEL);
3075 if (!acl)
3076 return ERR_PTR(-ENOMEM);
3077
3078 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3079 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3080 i++;
3081 }
3082
3083 acl->n_acl_entries = n_entries;
3084 acl->acl_policy = acl_policy;
3085
3086 return acl;
3087 }
3088
3089 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3090 {
3091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3092 struct net_device *dev = info->user_ptr[1];
3093 struct cfg80211_acl_data *acl;
3094 int err;
3095
3096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3098 return -EOPNOTSUPP;
3099
3100 if (!dev->ieee80211_ptr->beacon_interval)
3101 return -EINVAL;
3102
3103 acl = parse_acl_data(&rdev->wiphy, info);
3104 if (IS_ERR(acl))
3105 return PTR_ERR(acl);
3106
3107 err = rdev_set_mac_acl(rdev, dev, acl);
3108
3109 kfree(acl);
3110
3111 return err;
3112 }
3113
3114 static int nl80211_parse_beacon(struct nlattr *attrs[],
3115 struct cfg80211_beacon_data *bcn)
3116 {
3117 bool haveinfo = false;
3118
3119 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3120 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3121 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3122 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3123 return -EINVAL;
3124
3125 memset(bcn, 0, sizeof(*bcn));
3126
3127 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3128 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3129 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3130 if (!bcn->head_len)
3131 return -EINVAL;
3132 haveinfo = true;
3133 }
3134
3135 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3136 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3137 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3138 haveinfo = true;
3139 }
3140
3141 if (!haveinfo)
3142 return -EINVAL;
3143
3144 if (attrs[NL80211_ATTR_IE]) {
3145 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3146 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3147 }
3148
3149 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3150 bcn->proberesp_ies =
3151 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3152 bcn->proberesp_ies_len =
3153 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3154 }
3155
3156 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3157 bcn->assocresp_ies =
3158 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3159 bcn->assocresp_ies_len =
3160 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3161 }
3162
3163 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3164 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3165 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3166 }
3167
3168 return 0;
3169 }
3170
3171 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3172 struct cfg80211_ap_settings *params)
3173 {
3174 struct wireless_dev *wdev;
3175 bool ret = false;
3176
3177 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3178 if (wdev->iftype != NL80211_IFTYPE_AP &&
3179 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3180 continue;
3181
3182 if (!wdev->preset_chandef.chan)
3183 continue;
3184
3185 params->chandef = wdev->preset_chandef;
3186 ret = true;
3187 break;
3188 }
3189
3190 return ret;
3191 }
3192
3193 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3194 enum nl80211_auth_type auth_type,
3195 enum nl80211_commands cmd)
3196 {
3197 if (auth_type > NL80211_AUTHTYPE_MAX)
3198 return false;
3199
3200 switch (cmd) {
3201 case NL80211_CMD_AUTHENTICATE:
3202 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3203 auth_type == NL80211_AUTHTYPE_SAE)
3204 return false;
3205 return true;
3206 case NL80211_CMD_CONNECT:
3207 case NL80211_CMD_START_AP:
3208 /* SAE not supported yet */
3209 if (auth_type == NL80211_AUTHTYPE_SAE)
3210 return false;
3211 return true;
3212 default:
3213 return false;
3214 }
3215 }
3216
3217 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3218 {
3219 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3220 struct net_device *dev = info->user_ptr[1];
3221 struct wireless_dev *wdev = dev->ieee80211_ptr;
3222 struct cfg80211_ap_settings params;
3223 int err;
3224
3225 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3226 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3227 return -EOPNOTSUPP;
3228
3229 if (!rdev->ops->start_ap)
3230 return -EOPNOTSUPP;
3231
3232 if (wdev->beacon_interval)
3233 return -EALREADY;
3234
3235 memset(&params, 0, sizeof(params));
3236
3237 /* these are required for START_AP */
3238 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3239 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3240 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3241 return -EINVAL;
3242
3243 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3244 if (err)
3245 return err;
3246
3247 params.beacon_interval =
3248 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3249 params.dtim_period =
3250 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3251
3252 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3253 if (err)
3254 return err;
3255
3256 /*
3257 * In theory, some of these attributes should be required here
3258 * but since they were not used when the command was originally
3259 * added, keep them optional for old user space programs to let
3260 * them continue to work with drivers that do not need the
3261 * additional information -- drivers must check!
3262 */
3263 if (info->attrs[NL80211_ATTR_SSID]) {
3264 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3265 params.ssid_len =
3266 nla_len(info->attrs[NL80211_ATTR_SSID]);
3267 if (params.ssid_len == 0 ||
3268 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3269 return -EINVAL;
3270 }
3271
3272 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3273 params.hidden_ssid = nla_get_u32(
3274 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3275 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3276 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3277 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3278 return -EINVAL;
3279 }
3280
3281 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3282
3283 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3284 params.auth_type = nla_get_u32(
3285 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3286 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3287 NL80211_CMD_START_AP))
3288 return -EINVAL;
3289 } else
3290 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3291
3292 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3293 NL80211_MAX_NR_CIPHER_SUITES);
3294 if (err)
3295 return err;
3296
3297 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3298 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3299 return -EOPNOTSUPP;
3300 params.inactivity_timeout = nla_get_u16(
3301 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3302 }
3303
3304 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3305 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3306 return -EINVAL;
3307 params.p2p_ctwindow =
3308 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3309 if (params.p2p_ctwindow > 127)
3310 return -EINVAL;
3311 if (params.p2p_ctwindow != 0 &&
3312 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3313 return -EINVAL;
3314 }
3315
3316 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3317 u8 tmp;
3318
3319 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3320 return -EINVAL;
3321 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3322 if (tmp > 1)
3323 return -EINVAL;
3324 params.p2p_opp_ps = tmp;
3325 if (params.p2p_opp_ps != 0 &&
3326 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3327 return -EINVAL;
3328 }
3329
3330 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3331 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3332 if (err)
3333 return err;
3334 } else if (wdev->preset_chandef.chan) {
3335 params.chandef = wdev->preset_chandef;
3336 } else if (!nl80211_get_ap_channel(rdev, &params))
3337 return -EINVAL;
3338
3339 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3340 wdev->iftype))
3341 return -EINVAL;
3342
3343 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3344 params.acl = parse_acl_data(&rdev->wiphy, info);
3345 if (IS_ERR(params.acl))
3346 return PTR_ERR(params.acl);
3347 }
3348
3349 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3350 params.smps_mode =
3351 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3352 switch (params.smps_mode) {
3353 case NL80211_SMPS_OFF:
3354 break;
3355 case NL80211_SMPS_STATIC:
3356 if (!(rdev->wiphy.features &
3357 NL80211_FEATURE_STATIC_SMPS))
3358 return -EINVAL;
3359 break;
3360 case NL80211_SMPS_DYNAMIC:
3361 if (!(rdev->wiphy.features &
3362 NL80211_FEATURE_DYNAMIC_SMPS))
3363 return -EINVAL;
3364 break;
3365 default:
3366 return -EINVAL;
3367 }
3368 } else {
3369 params.smps_mode = NL80211_SMPS_OFF;
3370 }
3371
3372 wdev_lock(wdev);
3373 err = rdev_start_ap(rdev, dev, &params);
3374 if (!err) {
3375 wdev->preset_chandef = params.chandef;
3376 wdev->beacon_interval = params.beacon_interval;
3377 wdev->chandef = params.chandef;
3378 wdev->ssid_len = params.ssid_len;
3379 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3380 }
3381 wdev_unlock(wdev);
3382
3383 kfree(params.acl);
3384
3385 return err;
3386 }
3387
3388 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3389 {
3390 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3391 struct net_device *dev = info->user_ptr[1];
3392 struct wireless_dev *wdev = dev->ieee80211_ptr;
3393 struct cfg80211_beacon_data params;
3394 int err;
3395
3396 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3397 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3398 return -EOPNOTSUPP;
3399
3400 if (!rdev->ops->change_beacon)
3401 return -EOPNOTSUPP;
3402
3403 if (!wdev->beacon_interval)
3404 return -EINVAL;
3405
3406 err = nl80211_parse_beacon(info->attrs, &params);
3407 if (err)
3408 return err;
3409
3410 wdev_lock(wdev);
3411 err = rdev_change_beacon(rdev, dev, &params);
3412 wdev_unlock(wdev);
3413
3414 return err;
3415 }
3416
3417 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3418 {
3419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3420 struct net_device *dev = info->user_ptr[1];
3421
3422 return cfg80211_stop_ap(rdev, dev, false);
3423 }
3424
3425 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3426 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3427 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3428 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3429 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3430 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3431 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3432 };
3433
3434 static int parse_station_flags(struct genl_info *info,
3435 enum nl80211_iftype iftype,
3436 struct station_parameters *params)
3437 {
3438 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3439 struct nlattr *nla;
3440 int flag;
3441
3442 /*
3443 * Try parsing the new attribute first so userspace
3444 * can specify both for older kernels.
3445 */
3446 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3447 if (nla) {
3448 struct nl80211_sta_flag_update *sta_flags;
3449
3450 sta_flags = nla_data(nla);
3451 params->sta_flags_mask = sta_flags->mask;
3452 params->sta_flags_set = sta_flags->set;
3453 params->sta_flags_set &= params->sta_flags_mask;
3454 if ((params->sta_flags_mask |
3455 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3456 return -EINVAL;
3457 return 0;
3458 }
3459
3460 /* if present, parse the old attribute */
3461
3462 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3463 if (!nla)
3464 return 0;
3465
3466 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3467 nla, sta_flags_policy))
3468 return -EINVAL;
3469
3470 /*
3471 * Only allow certain flags for interface types so that
3472 * other attributes are silently ignored. Remember that
3473 * this is backward compatibility code with old userspace
3474 * and shouldn't be hit in other cases anyway.
3475 */
3476 switch (iftype) {
3477 case NL80211_IFTYPE_AP:
3478 case NL80211_IFTYPE_AP_VLAN:
3479 case NL80211_IFTYPE_P2P_GO:
3480 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3481 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3482 BIT(NL80211_STA_FLAG_WME) |
3483 BIT(NL80211_STA_FLAG_MFP);
3484 break;
3485 case NL80211_IFTYPE_P2P_CLIENT:
3486 case NL80211_IFTYPE_STATION:
3487 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3488 BIT(NL80211_STA_FLAG_TDLS_PEER);
3489 break;
3490 case NL80211_IFTYPE_MESH_POINT:
3491 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3492 BIT(NL80211_STA_FLAG_MFP) |
3493 BIT(NL80211_STA_FLAG_AUTHORIZED);
3494 default:
3495 return -EINVAL;
3496 }
3497
3498 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3499 if (flags[flag]) {
3500 params->sta_flags_set |= (1<<flag);
3501
3502 /* no longer support new API additions in old API */
3503 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3504 return -EINVAL;
3505 }
3506 }
3507
3508 return 0;
3509 }
3510
3511 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3512 int attr)
3513 {
3514 struct nlattr *rate;
3515 u32 bitrate;
3516 u16 bitrate_compat;
3517
3518 rate = nla_nest_start(msg, attr);
3519 if (!rate)
3520 return false;
3521
3522 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3523 bitrate = cfg80211_calculate_bitrate(info);
3524 /* report 16-bit bitrate only if we can */
3525 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3526 if (bitrate > 0 &&
3527 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3528 return false;
3529 if (bitrate_compat > 0 &&
3530 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3531 return false;
3532
3533 if (info->flags & RATE_INFO_FLAGS_MCS) {
3534 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3535 return false;
3536 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3537 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3538 return false;
3539 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3540 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3541 return false;
3542 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3543 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3544 return false;
3545 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3546 return false;
3547 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3548 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3549 return false;
3550 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3551 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3552 return false;
3553 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3554 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3555 return false;
3556 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3557 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3558 return false;
3559 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3560 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3561 return false;
3562 }
3563
3564 nla_nest_end(msg, rate);
3565 return true;
3566 }
3567
3568 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3569 int id)
3570 {
3571 void *attr;
3572 int i = 0;
3573
3574 if (!mask)
3575 return true;
3576
3577 attr = nla_nest_start(msg, id);
3578 if (!attr)
3579 return false;
3580
3581 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3582 if (!(mask & BIT(i)))
3583 continue;
3584
3585 if (nla_put_u8(msg, i, signal[i]))
3586 return false;
3587 }
3588
3589 nla_nest_end(msg, attr);
3590
3591 return true;
3592 }
3593
3594 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3595 int flags,
3596 struct cfg80211_registered_device *rdev,
3597 struct net_device *dev,
3598 const u8 *mac_addr, struct station_info *sinfo)
3599 {
3600 void *hdr;
3601 struct nlattr *sinfoattr, *bss_param;
3602
3603 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3604 if (!hdr)
3605 return -1;
3606
3607 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3608 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3609 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3610 goto nla_put_failure;
3611
3612 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3613 if (!sinfoattr)
3614 goto nla_put_failure;
3615 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3616 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3617 sinfo->connected_time))
3618 goto nla_put_failure;
3619 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3620 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3621 sinfo->inactive_time))
3622 goto nla_put_failure;
3623 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3624 STATION_INFO_RX_BYTES64)) &&
3625 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3626 (u32)sinfo->rx_bytes))
3627 goto nla_put_failure;
3628 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3629 STATION_INFO_TX_BYTES64)) &&
3630 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3631 (u32)sinfo->tx_bytes))
3632 goto nla_put_failure;
3633 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3634 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3635 sinfo->rx_bytes))
3636 goto nla_put_failure;
3637 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3638 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3639 sinfo->tx_bytes))
3640 goto nla_put_failure;
3641 if ((sinfo->filled & STATION_INFO_LLID) &&
3642 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3643 goto nla_put_failure;
3644 if ((sinfo->filled & STATION_INFO_PLID) &&
3645 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3646 goto nla_put_failure;
3647 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3648 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3649 sinfo->plink_state))
3650 goto nla_put_failure;
3651 switch (rdev->wiphy.signal_type) {
3652 case CFG80211_SIGNAL_TYPE_MBM:
3653 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3654 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3655 sinfo->signal))
3656 goto nla_put_failure;
3657 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3658 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3659 sinfo->signal_avg))
3660 goto nla_put_failure;
3661 break;
3662 default:
3663 break;
3664 }
3665 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3666 if (!nl80211_put_signal(msg, sinfo->chains,
3667 sinfo->chain_signal,
3668 NL80211_STA_INFO_CHAIN_SIGNAL))
3669 goto nla_put_failure;
3670 }
3671 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3672 if (!nl80211_put_signal(msg, sinfo->chains,
3673 sinfo->chain_signal_avg,
3674 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3675 goto nla_put_failure;
3676 }
3677 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3678 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3679 NL80211_STA_INFO_TX_BITRATE))
3680 goto nla_put_failure;
3681 }
3682 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3683 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3684 NL80211_STA_INFO_RX_BITRATE))
3685 goto nla_put_failure;
3686 }
3687 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3688 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3689 sinfo->rx_packets))
3690 goto nla_put_failure;
3691 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3692 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3693 sinfo->tx_packets))
3694 goto nla_put_failure;
3695 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3696 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3697 sinfo->tx_retries))
3698 goto nla_put_failure;
3699 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3700 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3701 sinfo->tx_failed))
3702 goto nla_put_failure;
3703 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3704 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3705 sinfo->expected_throughput))
3706 goto nla_put_failure;
3707 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3708 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3709 sinfo->beacon_loss_count))
3710 goto nla_put_failure;
3711 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3712 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3713 sinfo->local_pm))
3714 goto nla_put_failure;
3715 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3716 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3717 sinfo->peer_pm))
3718 goto nla_put_failure;
3719 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3720 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3721 sinfo->nonpeer_pm))
3722 goto nla_put_failure;
3723 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3724 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3725 if (!bss_param)
3726 goto nla_put_failure;
3727
3728 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3729 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3730 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3731 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3732 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3733 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3734 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3735 sinfo->bss_param.dtim_period) ||
3736 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3737 sinfo->bss_param.beacon_interval))
3738 goto nla_put_failure;
3739
3740 nla_nest_end(msg, bss_param);
3741 }
3742 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3743 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3744 sizeof(struct nl80211_sta_flag_update),
3745 &sinfo->sta_flags))
3746 goto nla_put_failure;
3747 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3748 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3749 sinfo->t_offset))
3750 goto nla_put_failure;
3751 nla_nest_end(msg, sinfoattr);
3752
3753 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3754 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3755 sinfo->assoc_req_ies))
3756 goto nla_put_failure;
3757
3758 return genlmsg_end(msg, hdr);
3759
3760 nla_put_failure:
3761 genlmsg_cancel(msg, hdr);
3762 return -EMSGSIZE;
3763 }
3764
3765 static int nl80211_dump_station(struct sk_buff *skb,
3766 struct netlink_callback *cb)
3767 {
3768 struct station_info sinfo;
3769 struct cfg80211_registered_device *rdev;
3770 struct wireless_dev *wdev;
3771 u8 mac_addr[ETH_ALEN];
3772 int sta_idx = cb->args[2];
3773 int err;
3774
3775 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3776 if (err)
3777 return err;
3778
3779 if (!wdev->netdev) {
3780 err = -EINVAL;
3781 goto out_err;
3782 }
3783
3784 if (!rdev->ops->dump_station) {
3785 err = -EOPNOTSUPP;
3786 goto out_err;
3787 }
3788
3789 while (1) {
3790 memset(&sinfo, 0, sizeof(sinfo));
3791 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3792 mac_addr, &sinfo);
3793 if (err == -ENOENT)
3794 break;
3795 if (err)
3796 goto out_err;
3797
3798 if (nl80211_send_station(skb,
3799 NETLINK_CB(cb->skb).portid,
3800 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3801 rdev, wdev->netdev, mac_addr,
3802 &sinfo) < 0)
3803 goto out;
3804
3805 sta_idx++;
3806 }
3807
3808
3809 out:
3810 cb->args[2] = sta_idx;
3811 err = skb->len;
3812 out_err:
3813 nl80211_finish_wdev_dump(rdev);
3814
3815 return err;
3816 }
3817
3818 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3819 {
3820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3821 struct net_device *dev = info->user_ptr[1];
3822 struct station_info sinfo;
3823 struct sk_buff *msg;
3824 u8 *mac_addr = NULL;
3825 int err;
3826
3827 memset(&sinfo, 0, sizeof(sinfo));
3828
3829 if (!info->attrs[NL80211_ATTR_MAC])
3830 return -EINVAL;
3831
3832 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3833
3834 if (!rdev->ops->get_station)
3835 return -EOPNOTSUPP;
3836
3837 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3838 if (err)
3839 return err;
3840
3841 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3842 if (!msg)
3843 return -ENOMEM;
3844
3845 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3846 rdev, dev, mac_addr, &sinfo) < 0) {
3847 nlmsg_free(msg);
3848 return -ENOBUFS;
3849 }
3850
3851 return genlmsg_reply(msg, info);
3852 }
3853
3854 int cfg80211_check_station_change(struct wiphy *wiphy,
3855 struct station_parameters *params,
3856 enum cfg80211_station_type statype)
3857 {
3858 if (params->listen_interval != -1)
3859 return -EINVAL;
3860 if (params->aid &&
3861 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3862 return -EINVAL;
3863
3864 /* When you run into this, adjust the code below for the new flag */
3865 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3866
3867 switch (statype) {
3868 case CFG80211_STA_MESH_PEER_KERNEL:
3869 case CFG80211_STA_MESH_PEER_USER:
3870 /*
3871 * No ignoring the TDLS flag here -- the userspace mesh
3872 * code doesn't have the bug of including TDLS in the
3873 * mask everywhere.
3874 */
3875 if (params->sta_flags_mask &
3876 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3877 BIT(NL80211_STA_FLAG_MFP) |
3878 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3879 return -EINVAL;
3880 break;
3881 case CFG80211_STA_TDLS_PEER_SETUP:
3882 case CFG80211_STA_TDLS_PEER_ACTIVE:
3883 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3884 return -EINVAL;
3885 /* ignore since it can't change */
3886 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3887 break;
3888 default:
3889 /* disallow mesh-specific things */
3890 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3891 return -EINVAL;
3892 if (params->local_pm)
3893 return -EINVAL;
3894 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3895 return -EINVAL;
3896 }
3897
3898 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3899 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3900 /* TDLS can't be set, ... */
3901 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3902 return -EINVAL;
3903 /*
3904 * ... but don't bother the driver with it. This works around
3905 * a hostapd/wpa_supplicant issue -- it always includes the
3906 * TLDS_PEER flag in the mask even for AP mode.
3907 */
3908 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3909 }
3910
3911 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3912 /* reject other things that can't change */
3913 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3914 return -EINVAL;
3915 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3916 return -EINVAL;
3917 if (params->supported_rates)
3918 return -EINVAL;
3919 if (params->ext_capab || params->ht_capa || params->vht_capa)
3920 return -EINVAL;
3921 }
3922
3923 if (statype != CFG80211_STA_AP_CLIENT) {
3924 if (params->vlan)
3925 return -EINVAL;
3926 }
3927
3928 switch (statype) {
3929 case CFG80211_STA_AP_MLME_CLIENT:
3930 /* Use this only for authorizing/unauthorizing a station */
3931 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3932 return -EOPNOTSUPP;
3933 break;
3934 case CFG80211_STA_AP_CLIENT:
3935 /* accept only the listed bits */
3936 if (params->sta_flags_mask &
3937 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3938 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3939 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3940 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3941 BIT(NL80211_STA_FLAG_WME) |
3942 BIT(NL80211_STA_FLAG_MFP)))
3943 return -EINVAL;
3944
3945 /* but authenticated/associated only if driver handles it */
3946 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3947 params->sta_flags_mask &
3948 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3949 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3950 return -EINVAL;
3951 break;
3952 case CFG80211_STA_IBSS:
3953 case CFG80211_STA_AP_STA:
3954 /* reject any changes other than AUTHORIZED */
3955 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3956 return -EINVAL;
3957 break;
3958 case CFG80211_STA_TDLS_PEER_SETUP:
3959 /* reject any changes other than AUTHORIZED or WME */
3960 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3961 BIT(NL80211_STA_FLAG_WME)))
3962 return -EINVAL;
3963 /* force (at least) rates when authorizing */
3964 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3965 !params->supported_rates)
3966 return -EINVAL;
3967 break;
3968 case CFG80211_STA_TDLS_PEER_ACTIVE:
3969 /* reject any changes */
3970 return -EINVAL;
3971 case CFG80211_STA_MESH_PEER_KERNEL:
3972 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3973 return -EINVAL;
3974 break;
3975 case CFG80211_STA_MESH_PEER_USER:
3976 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3977 return -EINVAL;
3978 break;
3979 }
3980
3981 return 0;
3982 }
3983 EXPORT_SYMBOL(cfg80211_check_station_change);
3984
3985 /*
3986 * Get vlan interface making sure it is running and on the right wiphy.
3987 */
3988 static struct net_device *get_vlan(struct genl_info *info,
3989 struct cfg80211_registered_device *rdev)
3990 {
3991 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3992 struct net_device *v;
3993 int ret;
3994
3995 if (!vlanattr)
3996 return NULL;
3997
3998 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3999 if (!v)
4000 return ERR_PTR(-ENODEV);
4001
4002 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4003 ret = -EINVAL;
4004 goto error;
4005 }
4006
4007 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4008 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4009 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4010 ret = -EINVAL;
4011 goto error;
4012 }
4013
4014 if (!netif_running(v)) {
4015 ret = -ENETDOWN;
4016 goto error;
4017 }
4018
4019 return v;
4020 error:
4021 dev_put(v);
4022 return ERR_PTR(ret);
4023 }
4024
4025 static const struct nla_policy
4026 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4027 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4028 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4029 };
4030
4031 static int nl80211_parse_sta_wme(struct genl_info *info,
4032 struct station_parameters *params)
4033 {
4034 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4035 struct nlattr *nla;
4036 int err;
4037
4038 /* parse WME attributes if present */
4039 if (!info->attrs[NL80211_ATTR_STA_WME])
4040 return 0;
4041
4042 nla = info->attrs[NL80211_ATTR_STA_WME];
4043 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4044 nl80211_sta_wme_policy);
4045 if (err)
4046 return err;
4047
4048 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4049 params->uapsd_queues = nla_get_u8(
4050 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4051 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4052 return -EINVAL;
4053
4054 if (tb[NL80211_STA_WME_MAX_SP])
4055 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4056
4057 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4058 return -EINVAL;
4059
4060 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4061
4062 return 0;
4063 }
4064
4065 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4066 struct station_parameters *params)
4067 {
4068 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4069 params->supported_channels =
4070 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4071 params->supported_channels_len =
4072 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4073 /*
4074 * Need to include at least one (first channel, number of
4075 * channels) tuple for each subband, and must have proper
4076 * tuples for the rest of the data as well.
4077 */
4078 if (params->supported_channels_len < 2)
4079 return -EINVAL;
4080 if (params->supported_channels_len % 2)
4081 return -EINVAL;
4082 }
4083
4084 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4085 params->supported_oper_classes =
4086 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4087 params->supported_oper_classes_len =
4088 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4089 /*
4090 * The value of the Length field of the Supported Operating
4091 * Classes element is between 2 and 253.
4092 */
4093 if (params->supported_oper_classes_len < 2 ||
4094 params->supported_oper_classes_len > 253)
4095 return -EINVAL;
4096 }
4097 return 0;
4098 }
4099
4100 static int nl80211_set_station_tdls(struct genl_info *info,
4101 struct station_parameters *params)
4102 {
4103 int err;
4104 /* Dummy STA entry gets updated once the peer capabilities are known */
4105 if (info->attrs[NL80211_ATTR_PEER_AID])
4106 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4107 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4108 params->ht_capa =
4109 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4110 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4111 params->vht_capa =
4112 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4113
4114 err = nl80211_parse_sta_channel_info(info, params);
4115 if (err)
4116 return err;
4117
4118 return nl80211_parse_sta_wme(info, params);
4119 }
4120
4121 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4122 {
4123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4124 struct net_device *dev = info->user_ptr[1];
4125 struct station_parameters params;
4126 u8 *mac_addr;
4127 int err;
4128
4129 memset(&params, 0, sizeof(params));
4130
4131 params.listen_interval = -1;
4132
4133 if (!rdev->ops->change_station)
4134 return -EOPNOTSUPP;
4135
4136 if (info->attrs[NL80211_ATTR_STA_AID])
4137 return -EINVAL;
4138
4139 if (!info->attrs[NL80211_ATTR_MAC])
4140 return -EINVAL;
4141
4142 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4143
4144 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4145 params.supported_rates =
4146 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4147 params.supported_rates_len =
4148 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4149 }
4150
4151 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4152 params.capability =
4153 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4154 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4155 }
4156
4157 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4158 params.ext_capab =
4159 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4160 params.ext_capab_len =
4161 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4162 }
4163
4164 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4165 return -EINVAL;
4166
4167 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4168 return -EINVAL;
4169
4170 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4171 params.plink_action =
4172 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4173 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4174 return -EINVAL;
4175 }
4176
4177 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4178 params.plink_state =
4179 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4180 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4181 return -EINVAL;
4182 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4183 }
4184
4185 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4186 enum nl80211_mesh_power_mode pm = nla_get_u32(
4187 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4188
4189 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4190 pm > NL80211_MESH_POWER_MAX)
4191 return -EINVAL;
4192
4193 params.local_pm = pm;
4194 }
4195
4196 /* Include parameters for TDLS peer (will check later) */
4197 err = nl80211_set_station_tdls(info, &params);
4198 if (err)
4199 return err;
4200
4201 params.vlan = get_vlan(info, rdev);
4202 if (IS_ERR(params.vlan))
4203 return PTR_ERR(params.vlan);
4204
4205 switch (dev->ieee80211_ptr->iftype) {
4206 case NL80211_IFTYPE_AP:
4207 case NL80211_IFTYPE_AP_VLAN:
4208 case NL80211_IFTYPE_P2P_GO:
4209 case NL80211_IFTYPE_P2P_CLIENT:
4210 case NL80211_IFTYPE_STATION:
4211 case NL80211_IFTYPE_ADHOC:
4212 case NL80211_IFTYPE_MESH_POINT:
4213 break;
4214 default:
4215 err = -EOPNOTSUPP;
4216 goto out_put_vlan;
4217 }
4218
4219 /* driver will call cfg80211_check_station_change() */
4220 err = rdev_change_station(rdev, dev, mac_addr, &params);
4221
4222 out_put_vlan:
4223 if (params.vlan)
4224 dev_put(params.vlan);
4225
4226 return err;
4227 }
4228
4229 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4230 {
4231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4232 int err;
4233 struct net_device *dev = info->user_ptr[1];
4234 struct station_parameters params;
4235 u8 *mac_addr = NULL;
4236
4237 memset(&params, 0, sizeof(params));
4238
4239 if (!rdev->ops->add_station)
4240 return -EOPNOTSUPP;
4241
4242 if (!info->attrs[NL80211_ATTR_MAC])
4243 return -EINVAL;
4244
4245 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4246 return -EINVAL;
4247
4248 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4249 return -EINVAL;
4250
4251 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4252 !info->attrs[NL80211_ATTR_PEER_AID])
4253 return -EINVAL;
4254
4255 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4256 params.supported_rates =
4257 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4258 params.supported_rates_len =
4259 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4260 params.listen_interval =
4261 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4262
4263 if (info->attrs[NL80211_ATTR_PEER_AID])
4264 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4265 else
4266 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4267 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4268 return -EINVAL;
4269
4270 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4271 params.capability =
4272 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4273 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4274 }
4275
4276 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4277 params.ext_capab =
4278 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4279 params.ext_capab_len =
4280 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4281 }
4282
4283 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4284 params.ht_capa =
4285 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4286
4287 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4288 params.vht_capa =
4289 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4290
4291 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4292 params.opmode_notif_used = true;
4293 params.opmode_notif =
4294 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4295 }
4296
4297 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4298 params.plink_action =
4299 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4300 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4301 return -EINVAL;
4302 }
4303
4304 err = nl80211_parse_sta_channel_info(info, &params);
4305 if (err)
4306 return err;
4307
4308 err = nl80211_parse_sta_wme(info, &params);
4309 if (err)
4310 return err;
4311
4312 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4313 return -EINVAL;
4314
4315 /* When you run into this, adjust the code below for the new flag */
4316 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4317
4318 switch (dev->ieee80211_ptr->iftype) {
4319 case NL80211_IFTYPE_AP:
4320 case NL80211_IFTYPE_AP_VLAN:
4321 case NL80211_IFTYPE_P2P_GO:
4322 /* ignore WME attributes if iface/sta is not capable */
4323 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4324 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4325 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4326
4327 /* TDLS peers cannot be added */
4328 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4329 info->attrs[NL80211_ATTR_PEER_AID])
4330 return -EINVAL;
4331 /* but don't bother the driver with it */
4332 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4333
4334 /* allow authenticated/associated only if driver handles it */
4335 if (!(rdev->wiphy.features &
4336 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4337 params.sta_flags_mask &
4338 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4339 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4340 return -EINVAL;
4341
4342 /* must be last in here for error handling */
4343 params.vlan = get_vlan(info, rdev);
4344 if (IS_ERR(params.vlan))
4345 return PTR_ERR(params.vlan);
4346 break;
4347 case NL80211_IFTYPE_MESH_POINT:
4348 /* ignore uAPSD data */
4349 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4350
4351 /* associated is disallowed */
4352 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4353 return -EINVAL;
4354 /* TDLS peers cannot be added */
4355 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4356 info->attrs[NL80211_ATTR_PEER_AID])
4357 return -EINVAL;
4358 break;
4359 case NL80211_IFTYPE_STATION:
4360 case NL80211_IFTYPE_P2P_CLIENT:
4361 /* ignore uAPSD data */
4362 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4363
4364 /* these are disallowed */
4365 if (params.sta_flags_mask &
4366 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4367 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4368 return -EINVAL;
4369 /* Only TDLS peers can be added */
4370 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4371 return -EINVAL;
4372 /* Can only add if TDLS ... */
4373 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4374 return -EOPNOTSUPP;
4375 /* ... with external setup is supported */
4376 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4377 return -EOPNOTSUPP;
4378 /*
4379 * Older wpa_supplicant versions always mark the TDLS peer
4380 * as authorized, but it shouldn't yet be.
4381 */
4382 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4383 break;
4384 default:
4385 return -EOPNOTSUPP;
4386 }
4387
4388 /* be aware of params.vlan when changing code here */
4389
4390 err = rdev_add_station(rdev, dev, mac_addr, &params);
4391
4392 if (params.vlan)
4393 dev_put(params.vlan);
4394 return err;
4395 }
4396
4397 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4398 {
4399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4400 struct net_device *dev = info->user_ptr[1];
4401 struct station_del_parameters params;
4402
4403 memset(&params, 0, sizeof(params));
4404
4405 if (info->attrs[NL80211_ATTR_MAC])
4406 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4407
4408 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4409 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4410 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4411 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4412 return -EINVAL;
4413
4414 if (!rdev->ops->del_station)
4415 return -EOPNOTSUPP;
4416
4417 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4418 params.subtype =
4419 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4420 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4421 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4422 return -EINVAL;
4423 } else {
4424 /* Default to Deauthentication frame */
4425 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4426 }
4427
4428 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4429 params.reason_code =
4430 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4431 if (params.reason_code == 0)
4432 return -EINVAL; /* 0 is reserved */
4433 } else {
4434 /* Default to reason code 2 */
4435 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4436 }
4437
4438 return rdev_del_station(rdev, dev, &params);
4439 }
4440
4441 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4442 int flags, struct net_device *dev,
4443 u8 *dst, u8 *next_hop,
4444 struct mpath_info *pinfo)
4445 {
4446 void *hdr;
4447 struct nlattr *pinfoattr;
4448
4449 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4450 if (!hdr)
4451 return -1;
4452
4453 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4454 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4455 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4456 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4457 goto nla_put_failure;
4458
4459 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4460 if (!pinfoattr)
4461 goto nla_put_failure;
4462 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4463 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4464 pinfo->frame_qlen))
4465 goto nla_put_failure;
4466 if (((pinfo->filled & MPATH_INFO_SN) &&
4467 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4468 ((pinfo->filled & MPATH_INFO_METRIC) &&
4469 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4470 pinfo->metric)) ||
4471 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4472 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4473 pinfo->exptime)) ||
4474 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4475 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4476 pinfo->flags)) ||
4477 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4478 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4479 pinfo->discovery_timeout)) ||
4480 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4481 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4482 pinfo->discovery_retries)))
4483 goto nla_put_failure;
4484
4485 nla_nest_end(msg, pinfoattr);
4486
4487 return genlmsg_end(msg, hdr);
4488
4489 nla_put_failure:
4490 genlmsg_cancel(msg, hdr);
4491 return -EMSGSIZE;
4492 }
4493
4494 static int nl80211_dump_mpath(struct sk_buff *skb,
4495 struct netlink_callback *cb)
4496 {
4497 struct mpath_info pinfo;
4498 struct cfg80211_registered_device *rdev;
4499 struct wireless_dev *wdev;
4500 u8 dst[ETH_ALEN];
4501 u8 next_hop[ETH_ALEN];
4502 int path_idx = cb->args[2];
4503 int err;
4504
4505 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4506 if (err)
4507 return err;
4508
4509 if (!rdev->ops->dump_mpath) {
4510 err = -EOPNOTSUPP;
4511 goto out_err;
4512 }
4513
4514 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4515 err = -EOPNOTSUPP;
4516 goto out_err;
4517 }
4518
4519 while (1) {
4520 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4521 next_hop, &pinfo);
4522 if (err == -ENOENT)
4523 break;
4524 if (err)
4525 goto out_err;
4526
4527 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4528 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4529 wdev->netdev, dst, next_hop,
4530 &pinfo) < 0)
4531 goto out;
4532
4533 path_idx++;
4534 }
4535
4536
4537 out:
4538 cb->args[2] = path_idx;
4539 err = skb->len;
4540 out_err:
4541 nl80211_finish_wdev_dump(rdev);
4542 return err;
4543 }
4544
4545 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4546 {
4547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4548 int err;
4549 struct net_device *dev = info->user_ptr[1];
4550 struct mpath_info pinfo;
4551 struct sk_buff *msg;
4552 u8 *dst = NULL;
4553 u8 next_hop[ETH_ALEN];
4554
4555 memset(&pinfo, 0, sizeof(pinfo));
4556
4557 if (!info->attrs[NL80211_ATTR_MAC])
4558 return -EINVAL;
4559
4560 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4561
4562 if (!rdev->ops->get_mpath)
4563 return -EOPNOTSUPP;
4564
4565 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4566 return -EOPNOTSUPP;
4567
4568 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4569 if (err)
4570 return err;
4571
4572 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4573 if (!msg)
4574 return -ENOMEM;
4575
4576 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4577 dev, dst, next_hop, &pinfo) < 0) {
4578 nlmsg_free(msg);
4579 return -ENOBUFS;
4580 }
4581
4582 return genlmsg_reply(msg, info);
4583 }
4584
4585 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4586 {
4587 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4588 struct net_device *dev = info->user_ptr[1];
4589 u8 *dst = NULL;
4590 u8 *next_hop = NULL;
4591
4592 if (!info->attrs[NL80211_ATTR_MAC])
4593 return -EINVAL;
4594
4595 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4596 return -EINVAL;
4597
4598 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4599 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4600
4601 if (!rdev->ops->change_mpath)
4602 return -EOPNOTSUPP;
4603
4604 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4605 return -EOPNOTSUPP;
4606
4607 return rdev_change_mpath(rdev, dev, dst, next_hop);
4608 }
4609
4610 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4611 {
4612 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4613 struct net_device *dev = info->user_ptr[1];
4614 u8 *dst = NULL;
4615 u8 *next_hop = NULL;
4616
4617 if (!info->attrs[NL80211_ATTR_MAC])
4618 return -EINVAL;
4619
4620 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4621 return -EINVAL;
4622
4623 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4624 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4625
4626 if (!rdev->ops->add_mpath)
4627 return -EOPNOTSUPP;
4628
4629 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4630 return -EOPNOTSUPP;
4631
4632 return rdev_add_mpath(rdev, dev, dst, next_hop);
4633 }
4634
4635 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4636 {
4637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4638 struct net_device *dev = info->user_ptr[1];
4639 u8 *dst = NULL;
4640
4641 if (info->attrs[NL80211_ATTR_MAC])
4642 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4643
4644 if (!rdev->ops->del_mpath)
4645 return -EOPNOTSUPP;
4646
4647 return rdev_del_mpath(rdev, dev, dst);
4648 }
4649
4650 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4651 {
4652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4653 int err;
4654 struct net_device *dev = info->user_ptr[1];
4655 struct mpath_info pinfo;
4656 struct sk_buff *msg;
4657 u8 *dst = NULL;
4658 u8 mpp[ETH_ALEN];
4659
4660 memset(&pinfo, 0, sizeof(pinfo));
4661
4662 if (!info->attrs[NL80211_ATTR_MAC])
4663 return -EINVAL;
4664
4665 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4666
4667 if (!rdev->ops->get_mpp)
4668 return -EOPNOTSUPP;
4669
4670 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4671 return -EOPNOTSUPP;
4672
4673 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4674 if (err)
4675 return err;
4676
4677 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4678 if (!msg)
4679 return -ENOMEM;
4680
4681 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4682 dev, dst, mpp, &pinfo) < 0) {
4683 nlmsg_free(msg);
4684 return -ENOBUFS;
4685 }
4686
4687 return genlmsg_reply(msg, info);
4688 }
4689
4690 static int nl80211_dump_mpp(struct sk_buff *skb,
4691 struct netlink_callback *cb)
4692 {
4693 struct mpath_info pinfo;
4694 struct cfg80211_registered_device *rdev;
4695 struct wireless_dev *wdev;
4696 u8 dst[ETH_ALEN];
4697 u8 mpp[ETH_ALEN];
4698 int path_idx = cb->args[2];
4699 int err;
4700
4701 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4702 if (err)
4703 return err;
4704
4705 if (!rdev->ops->dump_mpp) {
4706 err = -EOPNOTSUPP;
4707 goto out_err;
4708 }
4709
4710 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4711 err = -EOPNOTSUPP;
4712 goto out_err;
4713 }
4714
4715 while (1) {
4716 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4717 mpp, &pinfo);
4718 if (err == -ENOENT)
4719 break;
4720 if (err)
4721 goto out_err;
4722
4723 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4724 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4725 wdev->netdev, dst, mpp,
4726 &pinfo) < 0)
4727 goto out;
4728
4729 path_idx++;
4730 }
4731
4732 out:
4733 cb->args[2] = path_idx;
4734 err = skb->len;
4735 out_err:
4736 nl80211_finish_wdev_dump(rdev);
4737 return err;
4738 }
4739
4740 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4741 {
4742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4743 struct net_device *dev = info->user_ptr[1];
4744 struct wireless_dev *wdev = dev->ieee80211_ptr;
4745 struct bss_parameters params;
4746 int err;
4747
4748 memset(&params, 0, sizeof(params));
4749 /* default to not changing parameters */
4750 params.use_cts_prot = -1;
4751 params.use_short_preamble = -1;
4752 params.use_short_slot_time = -1;
4753 params.ap_isolate = -1;
4754 params.ht_opmode = -1;
4755 params.p2p_ctwindow = -1;
4756 params.p2p_opp_ps = -1;
4757
4758 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4759 params.use_cts_prot =
4760 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4761 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4762 params.use_short_preamble =
4763 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4764 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4765 params.use_short_slot_time =
4766 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4767 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4768 params.basic_rates =
4769 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4770 params.basic_rates_len =
4771 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4772 }
4773 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4774 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4775 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4776 params.ht_opmode =
4777 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4778
4779 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4780 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4781 return -EINVAL;
4782 params.p2p_ctwindow =
4783 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4784 if (params.p2p_ctwindow < 0)
4785 return -EINVAL;
4786 if (params.p2p_ctwindow != 0 &&
4787 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4788 return -EINVAL;
4789 }
4790
4791 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4792 u8 tmp;
4793
4794 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4795 return -EINVAL;
4796 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4797 if (tmp > 1)
4798 return -EINVAL;
4799 params.p2p_opp_ps = tmp;
4800 if (params.p2p_opp_ps &&
4801 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4802 return -EINVAL;
4803 }
4804
4805 if (!rdev->ops->change_bss)
4806 return -EOPNOTSUPP;
4807
4808 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4809 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4810 return -EOPNOTSUPP;
4811
4812 wdev_lock(wdev);
4813 err = rdev_change_bss(rdev, dev, &params);
4814 wdev_unlock(wdev);
4815
4816 return err;
4817 }
4818
4819 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4820 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4821 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4822 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4823 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4824 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4825 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4826 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4827 };
4828
4829 static int parse_reg_rule(struct nlattr *tb[],
4830 struct ieee80211_reg_rule *reg_rule)
4831 {
4832 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4833 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4834
4835 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4836 return -EINVAL;
4837 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4838 return -EINVAL;
4839 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4840 return -EINVAL;
4841 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4842 return -EINVAL;
4843 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4844 return -EINVAL;
4845
4846 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4847
4848 freq_range->start_freq_khz =
4849 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4850 freq_range->end_freq_khz =
4851 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4852 freq_range->max_bandwidth_khz =
4853 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4854
4855 power_rule->max_eirp =
4856 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4857
4858 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4859 power_rule->max_antenna_gain =
4860 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4861
4862 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4863 reg_rule->dfs_cac_ms =
4864 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4865
4866 return 0;
4867 }
4868
4869 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4870 {
4871 char *data = NULL;
4872 enum nl80211_user_reg_hint_type user_reg_hint_type;
4873
4874 /*
4875 * You should only get this when cfg80211 hasn't yet initialized
4876 * completely when built-in to the kernel right between the time
4877 * window between nl80211_init() and regulatory_init(), if that is
4878 * even possible.
4879 */
4880 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4881 return -EINPROGRESS;
4882
4883 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4884 user_reg_hint_type =
4885 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4886 else
4887 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4888
4889 switch (user_reg_hint_type) {
4890 case NL80211_USER_REG_HINT_USER:
4891 case NL80211_USER_REG_HINT_CELL_BASE:
4892 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4893 return -EINVAL;
4894
4895 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4896 return regulatory_hint_user(data, user_reg_hint_type);
4897 case NL80211_USER_REG_HINT_INDOOR:
4898 return regulatory_hint_indoor_user();
4899 default:
4900 return -EINVAL;
4901 }
4902 }
4903
4904 static int nl80211_get_mesh_config(struct sk_buff *skb,
4905 struct genl_info *info)
4906 {
4907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4908 struct net_device *dev = info->user_ptr[1];
4909 struct wireless_dev *wdev = dev->ieee80211_ptr;
4910 struct mesh_config cur_params;
4911 int err = 0;
4912 void *hdr;
4913 struct nlattr *pinfoattr;
4914 struct sk_buff *msg;
4915
4916 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4917 return -EOPNOTSUPP;
4918
4919 if (!rdev->ops->get_mesh_config)
4920 return -EOPNOTSUPP;
4921
4922 wdev_lock(wdev);
4923 /* If not connected, get default parameters */
4924 if (!wdev->mesh_id_len)
4925 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4926 else
4927 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4928 wdev_unlock(wdev);
4929
4930 if (err)
4931 return err;
4932
4933 /* Draw up a netlink message to send back */
4934 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4935 if (!msg)
4936 return -ENOMEM;
4937 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4938 NL80211_CMD_GET_MESH_CONFIG);
4939 if (!hdr)
4940 goto out;
4941 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4942 if (!pinfoattr)
4943 goto nla_put_failure;
4944 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4945 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4946 cur_params.dot11MeshRetryTimeout) ||
4947 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4948 cur_params.dot11MeshConfirmTimeout) ||
4949 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4950 cur_params.dot11MeshHoldingTimeout) ||
4951 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4952 cur_params.dot11MeshMaxPeerLinks) ||
4953 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4954 cur_params.dot11MeshMaxRetries) ||
4955 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4956 cur_params.dot11MeshTTL) ||
4957 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4958 cur_params.element_ttl) ||
4959 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4960 cur_params.auto_open_plinks) ||
4961 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4962 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4963 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4964 cur_params.dot11MeshHWMPmaxPREQretries) ||
4965 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4966 cur_params.path_refresh_time) ||
4967 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4968 cur_params.min_discovery_timeout) ||
4969 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4970 cur_params.dot11MeshHWMPactivePathTimeout) ||
4971 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4972 cur_params.dot11MeshHWMPpreqMinInterval) ||
4973 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4974 cur_params.dot11MeshHWMPperrMinInterval) ||
4975 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4976 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4977 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4978 cur_params.dot11MeshHWMPRootMode) ||
4979 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4980 cur_params.dot11MeshHWMPRannInterval) ||
4981 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4982 cur_params.dot11MeshGateAnnouncementProtocol) ||
4983 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4984 cur_params.dot11MeshForwarding) ||
4985 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4986 cur_params.rssi_threshold) ||
4987 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4988 cur_params.ht_opmode) ||
4989 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4990 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4991 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4992 cur_params.dot11MeshHWMProotInterval) ||
4993 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4994 cur_params.dot11MeshHWMPconfirmationInterval) ||
4995 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4996 cur_params.power_mode) ||
4997 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4998 cur_params.dot11MeshAwakeWindowDuration) ||
4999 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5000 cur_params.plink_timeout))
5001 goto nla_put_failure;
5002 nla_nest_end(msg, pinfoattr);
5003 genlmsg_end(msg, hdr);
5004 return genlmsg_reply(msg, info);
5005
5006 nla_put_failure:
5007 genlmsg_cancel(msg, hdr);
5008 out:
5009 nlmsg_free(msg);
5010 return -ENOBUFS;
5011 }
5012
5013 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5014 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5015 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5016 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5017 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5018 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5019 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5020 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5021 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5022 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5023 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5024 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5025 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5026 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5027 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5028 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5029 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5030 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5031 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5032 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5033 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5034 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5035 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5036 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5037 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5038 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5039 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5040 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5041 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5042 };
5043
5044 static const struct nla_policy
5045 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5046 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5047 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5048 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5049 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5050 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5051 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5052 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5053 .len = IEEE80211_MAX_DATA_LEN },
5054 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5055 };
5056
5057 static int nl80211_parse_mesh_config(struct genl_info *info,
5058 struct mesh_config *cfg,
5059 u32 *mask_out)
5060 {
5061 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5062 u32 mask = 0;
5063
5064 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5065 do { \
5066 if (tb[attr]) { \
5067 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5068 return -EINVAL; \
5069 cfg->param = fn(tb[attr]); \
5070 mask |= (1 << (attr - 1)); \
5071 } \
5072 } while (0)
5073
5074
5075 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5076 return -EINVAL;
5077 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5078 info->attrs[NL80211_ATTR_MESH_CONFIG],
5079 nl80211_meshconf_params_policy))
5080 return -EINVAL;
5081
5082 /* This makes sure that there aren't more than 32 mesh config
5083 * parameters (otherwise our bitfield scheme would not work.) */
5084 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5085
5086 /* Fill in the params struct */
5087 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5088 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5089 nla_get_u16);
5090 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5091 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5092 nla_get_u16);
5093 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5094 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5095 nla_get_u16);
5096 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5097 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5098 nla_get_u16);
5099 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5100 mask, NL80211_MESHCONF_MAX_RETRIES,
5101 nla_get_u8);
5102 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5103 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5104 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5105 mask, NL80211_MESHCONF_ELEMENT_TTL,
5106 nla_get_u8);
5107 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5108 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5109 nla_get_u8);
5110 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5111 1, 255, mask,
5112 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5113 nla_get_u32);
5114 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5115 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5116 nla_get_u8);
5117 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5118 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5119 nla_get_u32);
5120 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5121 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5122 nla_get_u16);
5123 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5124 1, 65535, mask,
5125 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5126 nla_get_u32);
5127 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5128 1, 65535, mask,
5129 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5130 nla_get_u16);
5131 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5132 1, 65535, mask,
5133 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5134 nla_get_u16);
5135 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5136 dot11MeshHWMPnetDiameterTraversalTime,
5137 1, 65535, mask,
5138 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5139 nla_get_u16);
5140 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5141 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5142 nla_get_u8);
5143 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5144 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5145 nla_get_u16);
5146 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5147 dot11MeshGateAnnouncementProtocol, 0, 1,
5148 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5149 nla_get_u8);
5150 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5151 mask, NL80211_MESHCONF_FORWARDING,
5152 nla_get_u8);
5153 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5154 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5155 nla_get_s32);
5156 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5157 mask, NL80211_MESHCONF_HT_OPMODE,
5158 nla_get_u16);
5159 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5160 1, 65535, mask,
5161 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5162 nla_get_u32);
5163 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5164 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5165 nla_get_u16);
5166 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5167 dot11MeshHWMPconfirmationInterval,
5168 1, 65535, mask,
5169 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5170 nla_get_u16);
5171 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5172 NL80211_MESH_POWER_ACTIVE,
5173 NL80211_MESH_POWER_MAX,
5174 mask, NL80211_MESHCONF_POWER_MODE,
5175 nla_get_u32);
5176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5177 0, 65535, mask,
5178 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5179 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5180 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5181 nla_get_u32);
5182 if (mask_out)
5183 *mask_out = mask;
5184
5185 return 0;
5186
5187 #undef FILL_IN_MESH_PARAM_IF_SET
5188 }
5189
5190 static int nl80211_parse_mesh_setup(struct genl_info *info,
5191 struct mesh_setup *setup)
5192 {
5193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5194 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5195
5196 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5197 return -EINVAL;
5198 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5199 info->attrs[NL80211_ATTR_MESH_SETUP],
5200 nl80211_mesh_setup_params_policy))
5201 return -EINVAL;
5202
5203 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5204 setup->sync_method =
5205 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5206 IEEE80211_SYNC_METHOD_VENDOR :
5207 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5208
5209 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5210 setup->path_sel_proto =
5211 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5212 IEEE80211_PATH_PROTOCOL_VENDOR :
5213 IEEE80211_PATH_PROTOCOL_HWMP;
5214
5215 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5216 setup->path_metric =
5217 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5218 IEEE80211_PATH_METRIC_VENDOR :
5219 IEEE80211_PATH_METRIC_AIRTIME;
5220
5221
5222 if (tb[NL80211_MESH_SETUP_IE]) {
5223 struct nlattr *ieattr =
5224 tb[NL80211_MESH_SETUP_IE];
5225 if (!is_valid_ie_attr(ieattr))
5226 return -EINVAL;
5227 setup->ie = nla_data(ieattr);
5228 setup->ie_len = nla_len(ieattr);
5229 }
5230 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5231 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5232 return -EINVAL;
5233 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5234 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5235 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5236 if (setup->is_secure)
5237 setup->user_mpm = true;
5238
5239 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5240 if (!setup->user_mpm)
5241 return -EINVAL;
5242 setup->auth_id =
5243 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5244 }
5245
5246 return 0;
5247 }
5248
5249 static int nl80211_update_mesh_config(struct sk_buff *skb,
5250 struct genl_info *info)
5251 {
5252 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5253 struct net_device *dev = info->user_ptr[1];
5254 struct wireless_dev *wdev = dev->ieee80211_ptr;
5255 struct mesh_config cfg;
5256 u32 mask;
5257 int err;
5258
5259 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5260 return -EOPNOTSUPP;
5261
5262 if (!rdev->ops->update_mesh_config)
5263 return -EOPNOTSUPP;
5264
5265 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5266 if (err)
5267 return err;
5268
5269 wdev_lock(wdev);
5270 if (!wdev->mesh_id_len)
5271 err = -ENOLINK;
5272
5273 if (!err)
5274 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5275
5276 wdev_unlock(wdev);
5277
5278 return err;
5279 }
5280
5281 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5282 {
5283 const struct ieee80211_regdomain *regdom;
5284 struct sk_buff *msg;
5285 void *hdr = NULL;
5286 struct nlattr *nl_reg_rules;
5287 unsigned int i;
5288
5289 if (!cfg80211_regdomain)
5290 return -EINVAL;
5291
5292 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5293 if (!msg)
5294 return -ENOBUFS;
5295
5296 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5297 NL80211_CMD_GET_REG);
5298 if (!hdr)
5299 goto put_failure;
5300
5301 if (reg_last_request_cell_base() &&
5302 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5303 NL80211_USER_REG_HINT_CELL_BASE))
5304 goto nla_put_failure;
5305
5306 rcu_read_lock();
5307 regdom = rcu_dereference(cfg80211_regdomain);
5308
5309 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5310 (regdom->dfs_region &&
5311 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5312 goto nla_put_failure_rcu;
5313
5314 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5315 if (!nl_reg_rules)
5316 goto nla_put_failure_rcu;
5317
5318 for (i = 0; i < regdom->n_reg_rules; i++) {
5319 struct nlattr *nl_reg_rule;
5320 const struct ieee80211_reg_rule *reg_rule;
5321 const struct ieee80211_freq_range *freq_range;
5322 const struct ieee80211_power_rule *power_rule;
5323 unsigned int max_bandwidth_khz;
5324
5325 reg_rule = &regdom->reg_rules[i];
5326 freq_range = &reg_rule->freq_range;
5327 power_rule = &reg_rule->power_rule;
5328
5329 nl_reg_rule = nla_nest_start(msg, i);
5330 if (!nl_reg_rule)
5331 goto nla_put_failure_rcu;
5332
5333 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5334 if (!max_bandwidth_khz)
5335 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5336 reg_rule);
5337
5338 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5339 reg_rule->flags) ||
5340 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5341 freq_range->start_freq_khz) ||
5342 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5343 freq_range->end_freq_khz) ||
5344 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5345 max_bandwidth_khz) ||
5346 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5347 power_rule->max_antenna_gain) ||
5348 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5349 power_rule->max_eirp) ||
5350 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5351 reg_rule->dfs_cac_ms))
5352 goto nla_put_failure_rcu;
5353
5354 nla_nest_end(msg, nl_reg_rule);
5355 }
5356 rcu_read_unlock();
5357
5358 nla_nest_end(msg, nl_reg_rules);
5359
5360 genlmsg_end(msg, hdr);
5361 return genlmsg_reply(msg, info);
5362
5363 nla_put_failure_rcu:
5364 rcu_read_unlock();
5365 nla_put_failure:
5366 genlmsg_cancel(msg, hdr);
5367 put_failure:
5368 nlmsg_free(msg);
5369 return -EMSGSIZE;
5370 }
5371
5372 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5373 {
5374 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5375 struct nlattr *nl_reg_rule;
5376 char *alpha2 = NULL;
5377 int rem_reg_rules = 0, r = 0;
5378 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5379 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5380 struct ieee80211_regdomain *rd = NULL;
5381
5382 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5383 return -EINVAL;
5384
5385 if (!info->attrs[NL80211_ATTR_REG_RULES])
5386 return -EINVAL;
5387
5388 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5389
5390 if (info->attrs[NL80211_ATTR_DFS_REGION])
5391 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5392
5393 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5394 rem_reg_rules) {
5395 num_rules++;
5396 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5397 return -EINVAL;
5398 }
5399
5400 if (!reg_is_valid_request(alpha2))
5401 return -EINVAL;
5402
5403 size_of_regd = sizeof(struct ieee80211_regdomain) +
5404 num_rules * sizeof(struct ieee80211_reg_rule);
5405
5406 rd = kzalloc(size_of_regd, GFP_KERNEL);
5407 if (!rd)
5408 return -ENOMEM;
5409
5410 rd->n_reg_rules = num_rules;
5411 rd->alpha2[0] = alpha2[0];
5412 rd->alpha2[1] = alpha2[1];
5413
5414 /*
5415 * Disable DFS master mode if the DFS region was
5416 * not supported or known on this kernel.
5417 */
5418 if (reg_supported_dfs_region(dfs_region))
5419 rd->dfs_region = dfs_region;
5420
5421 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5422 rem_reg_rules) {
5423 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5424 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5425 reg_rule_policy);
5426 if (r)
5427 goto bad_reg;
5428 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5429 if (r)
5430 goto bad_reg;
5431
5432 rule_idx++;
5433
5434 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5435 r = -EINVAL;
5436 goto bad_reg;
5437 }
5438 }
5439
5440 r = set_regdom(rd);
5441 /* set_regdom took ownership */
5442 rd = NULL;
5443
5444 bad_reg:
5445 kfree(rd);
5446 return r;
5447 }
5448
5449 static int validate_scan_freqs(struct nlattr *freqs)
5450 {
5451 struct nlattr *attr1, *attr2;
5452 int n_channels = 0, tmp1, tmp2;
5453
5454 nla_for_each_nested(attr1, freqs, tmp1) {
5455 n_channels++;
5456 /*
5457 * Some hardware has a limited channel list for
5458 * scanning, and it is pretty much nonsensical
5459 * to scan for a channel twice, so disallow that
5460 * and don't require drivers to check that the
5461 * channel list they get isn't longer than what
5462 * they can scan, as long as they can scan all
5463 * the channels they registered at once.
5464 */
5465 nla_for_each_nested(attr2, freqs, tmp2)
5466 if (attr1 != attr2 &&
5467 nla_get_u32(attr1) == nla_get_u32(attr2))
5468 return 0;
5469 }
5470
5471 return n_channels;
5472 }
5473
5474 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5475 {
5476 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5477 struct wireless_dev *wdev = info->user_ptr[1];
5478 struct cfg80211_scan_request *request;
5479 struct nlattr *attr;
5480 struct wiphy *wiphy;
5481 int err, tmp, n_ssids = 0, n_channels, i;
5482 size_t ie_len;
5483
5484 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5485 return -EINVAL;
5486
5487 wiphy = &rdev->wiphy;
5488
5489 if (!rdev->ops->scan)
5490 return -EOPNOTSUPP;
5491
5492 if (rdev->scan_req || rdev->scan_msg) {
5493 err = -EBUSY;
5494 goto unlock;
5495 }
5496
5497 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5498 n_channels = validate_scan_freqs(
5499 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5500 if (!n_channels) {
5501 err = -EINVAL;
5502 goto unlock;
5503 }
5504 } else {
5505 n_channels = ieee80211_get_num_supported_channels(wiphy);
5506 }
5507
5508 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5509 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5510 n_ssids++;
5511
5512 if (n_ssids > wiphy->max_scan_ssids) {
5513 err = -EINVAL;
5514 goto unlock;
5515 }
5516
5517 if (info->attrs[NL80211_ATTR_IE])
5518 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5519 else
5520 ie_len = 0;
5521
5522 if (ie_len > wiphy->max_scan_ie_len) {
5523 err = -EINVAL;
5524 goto unlock;
5525 }
5526
5527 request = kzalloc(sizeof(*request)
5528 + sizeof(*request->ssids) * n_ssids
5529 + sizeof(*request->channels) * n_channels
5530 + ie_len, GFP_KERNEL);
5531 if (!request) {
5532 err = -ENOMEM;
5533 goto unlock;
5534 }
5535
5536 if (n_ssids)
5537 request->ssids = (void *)&request->channels[n_channels];
5538 request->n_ssids = n_ssids;
5539 if (ie_len) {
5540 if (request->ssids)
5541 request->ie = (void *)(request->ssids + n_ssids);
5542 else
5543 request->ie = (void *)(request->channels + n_channels);
5544 }
5545
5546 i = 0;
5547 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5548 /* user specified, bail out if channel not found */
5549 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5550 struct ieee80211_channel *chan;
5551
5552 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5553
5554 if (!chan) {
5555 err = -EINVAL;
5556 goto out_free;
5557 }
5558
5559 /* ignore disabled channels */
5560 if (chan->flags & IEEE80211_CHAN_DISABLED)
5561 continue;
5562
5563 request->channels[i] = chan;
5564 i++;
5565 }
5566 } else {
5567 enum ieee80211_band band;
5568
5569 /* all channels */
5570 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5571 int j;
5572 if (!wiphy->bands[band])
5573 continue;
5574 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5575 struct ieee80211_channel *chan;
5576
5577 chan = &wiphy->bands[band]->channels[j];
5578
5579 if (chan->flags & IEEE80211_CHAN_DISABLED)
5580 continue;
5581
5582 request->channels[i] = chan;
5583 i++;
5584 }
5585 }
5586 }
5587
5588 if (!i) {
5589 err = -EINVAL;
5590 goto out_free;
5591 }
5592
5593 request->n_channels = i;
5594
5595 i = 0;
5596 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5597 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5598 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5599 err = -EINVAL;
5600 goto out_free;
5601 }
5602 request->ssids[i].ssid_len = nla_len(attr);
5603 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5604 i++;
5605 }
5606 }
5607
5608 if (info->attrs[NL80211_ATTR_IE]) {
5609 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5610 memcpy((void *)request->ie,
5611 nla_data(info->attrs[NL80211_ATTR_IE]),
5612 request->ie_len);
5613 }
5614
5615 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5616 if (wiphy->bands[i])
5617 request->rates[i] =
5618 (1 << wiphy->bands[i]->n_bitrates) - 1;
5619
5620 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5621 nla_for_each_nested(attr,
5622 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5623 tmp) {
5624 enum ieee80211_band band = nla_type(attr);
5625
5626 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5627 err = -EINVAL;
5628 goto out_free;
5629 }
5630
5631 if (!wiphy->bands[band])
5632 continue;
5633
5634 err = ieee80211_get_ratemask(wiphy->bands[band],
5635 nla_data(attr),
5636 nla_len(attr),
5637 &request->rates[band]);
5638 if (err)
5639 goto out_free;
5640 }
5641 }
5642
5643 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5644 request->flags = nla_get_u32(
5645 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5646 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5647 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5648 err = -EOPNOTSUPP;
5649 goto out_free;
5650 }
5651 }
5652
5653 request->no_cck =
5654 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5655
5656 request->wdev = wdev;
5657 request->wiphy = &rdev->wiphy;
5658 request->scan_start = jiffies;
5659
5660 rdev->scan_req = request;
5661 err = rdev_scan(rdev, request);
5662
5663 if (!err) {
5664 nl80211_send_scan_start(rdev, wdev);
5665 if (wdev->netdev)
5666 dev_hold(wdev->netdev);
5667 } else {
5668 out_free:
5669 rdev->scan_req = NULL;
5670 kfree(request);
5671 }
5672
5673 unlock:
5674 return err;
5675 }
5676
5677 static int nl80211_start_sched_scan(struct sk_buff *skb,
5678 struct genl_info *info)
5679 {
5680 struct cfg80211_sched_scan_request *request;
5681 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5682 struct net_device *dev = info->user_ptr[1];
5683 struct nlattr *attr;
5684 struct wiphy *wiphy;
5685 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5686 u32 interval;
5687 enum ieee80211_band band;
5688 size_t ie_len;
5689 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5690 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5691
5692 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5693 !rdev->ops->sched_scan_start)
5694 return -EOPNOTSUPP;
5695
5696 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5697 return -EINVAL;
5698
5699 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5700 return -EINVAL;
5701
5702 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5703 if (interval == 0)
5704 return -EINVAL;
5705
5706 wiphy = &rdev->wiphy;
5707
5708 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5709 n_channels = validate_scan_freqs(
5710 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5711 if (!n_channels)
5712 return -EINVAL;
5713 } else {
5714 n_channels = ieee80211_get_num_supported_channels(wiphy);
5715 }
5716
5717 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5718 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5719 tmp)
5720 n_ssids++;
5721
5722 if (n_ssids > wiphy->max_sched_scan_ssids)
5723 return -EINVAL;
5724
5725 /*
5726 * First, count the number of 'real' matchsets. Due to an issue with
5727 * the old implementation, matchsets containing only the RSSI attribute
5728 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5729 * RSSI for all matchsets, rather than their own matchset for reporting
5730 * all APs with a strong RSSI. This is needed to be compatible with
5731 * older userspace that treated a matchset with only the RSSI as the
5732 * global RSSI for all other matchsets - if there are other matchsets.
5733 */
5734 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5735 nla_for_each_nested(attr,
5736 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5737 tmp) {
5738 struct nlattr *rssi;
5739
5740 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5741 nla_data(attr), nla_len(attr),
5742 nl80211_match_policy);
5743 if (err)
5744 return err;
5745 /* add other standalone attributes here */
5746 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5747 n_match_sets++;
5748 continue;
5749 }
5750 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5751 if (rssi)
5752 default_match_rssi = nla_get_s32(rssi);
5753 }
5754 }
5755
5756 /* However, if there's no other matchset, add the RSSI one */
5757 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5758 n_match_sets = 1;
5759
5760 if (n_match_sets > wiphy->max_match_sets)
5761 return -EINVAL;
5762
5763 if (info->attrs[NL80211_ATTR_IE])
5764 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5765 else
5766 ie_len = 0;
5767
5768 if (ie_len > wiphy->max_sched_scan_ie_len)
5769 return -EINVAL;
5770
5771 if (rdev->sched_scan_req) {
5772 err = -EINPROGRESS;
5773 goto out;
5774 }
5775
5776 request = kzalloc(sizeof(*request)
5777 + sizeof(*request->ssids) * n_ssids
5778 + sizeof(*request->match_sets) * n_match_sets
5779 + sizeof(*request->channels) * n_channels
5780 + ie_len, GFP_KERNEL);
5781 if (!request) {
5782 err = -ENOMEM;
5783 goto out;
5784 }
5785
5786 if (n_ssids)
5787 request->ssids = (void *)&request->channels[n_channels];
5788 request->n_ssids = n_ssids;
5789 if (ie_len) {
5790 if (request->ssids)
5791 request->ie = (void *)(request->ssids + n_ssids);
5792 else
5793 request->ie = (void *)(request->channels + n_channels);
5794 }
5795
5796 if (n_match_sets) {
5797 if (request->ie)
5798 request->match_sets = (void *)(request->ie + ie_len);
5799 else if (request->ssids)
5800 request->match_sets =
5801 (void *)(request->ssids + n_ssids);
5802 else
5803 request->match_sets =
5804 (void *)(request->channels + n_channels);
5805 }
5806 request->n_match_sets = n_match_sets;
5807
5808 i = 0;
5809 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5810 /* user specified, bail out if channel not found */
5811 nla_for_each_nested(attr,
5812 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5813 tmp) {
5814 struct ieee80211_channel *chan;
5815
5816 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5817
5818 if (!chan) {
5819 err = -EINVAL;
5820 goto out_free;
5821 }
5822
5823 /* ignore disabled channels */
5824 if (chan->flags & IEEE80211_CHAN_DISABLED)
5825 continue;
5826
5827 request->channels[i] = chan;
5828 i++;
5829 }
5830 } else {
5831 /* all channels */
5832 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5833 int j;
5834 if (!wiphy->bands[band])
5835 continue;
5836 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5837 struct ieee80211_channel *chan;
5838
5839 chan = &wiphy->bands[band]->channels[j];
5840
5841 if (chan->flags & IEEE80211_CHAN_DISABLED)
5842 continue;
5843
5844 request->channels[i] = chan;
5845 i++;
5846 }
5847 }
5848 }
5849
5850 if (!i) {
5851 err = -EINVAL;
5852 goto out_free;
5853 }
5854
5855 request->n_channels = i;
5856
5857 i = 0;
5858 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5859 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5860 tmp) {
5861 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5862 err = -EINVAL;
5863 goto out_free;
5864 }
5865 request->ssids[i].ssid_len = nla_len(attr);
5866 memcpy(request->ssids[i].ssid, nla_data(attr),
5867 nla_len(attr));
5868 i++;
5869 }
5870 }
5871
5872 i = 0;
5873 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5874 nla_for_each_nested(attr,
5875 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5876 tmp) {
5877 struct nlattr *ssid, *rssi;
5878
5879 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5880 nla_data(attr), nla_len(attr),
5881 nl80211_match_policy);
5882 if (err)
5883 goto out_free;
5884 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5885 if (ssid) {
5886 if (WARN_ON(i >= n_match_sets)) {
5887 /* this indicates a programming error,
5888 * the loop above should have verified
5889 * things properly
5890 */
5891 err = -EINVAL;
5892 goto out_free;
5893 }
5894
5895 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5896 err = -EINVAL;
5897 goto out_free;
5898 }
5899 memcpy(request->match_sets[i].ssid.ssid,
5900 nla_data(ssid), nla_len(ssid));
5901 request->match_sets[i].ssid.ssid_len =
5902 nla_len(ssid);
5903 /* special attribute - old implemenation w/a */
5904 request->match_sets[i].rssi_thold =
5905 default_match_rssi;
5906 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5907 if (rssi)
5908 request->match_sets[i].rssi_thold =
5909 nla_get_s32(rssi);
5910 }
5911 i++;
5912 }
5913
5914 /* there was no other matchset, so the RSSI one is alone */
5915 if (i == 0)
5916 request->match_sets[0].rssi_thold = default_match_rssi;
5917
5918 request->min_rssi_thold = INT_MAX;
5919 for (i = 0; i < n_match_sets; i++)
5920 request->min_rssi_thold =
5921 min(request->match_sets[i].rssi_thold,
5922 request->min_rssi_thold);
5923 } else {
5924 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5925 }
5926
5927 if (ie_len) {
5928 request->ie_len = ie_len;
5929 memcpy((void *)request->ie,
5930 nla_data(info->attrs[NL80211_ATTR_IE]),
5931 request->ie_len);
5932 }
5933
5934 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5935 request->flags = nla_get_u32(
5936 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5937 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5938 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5939 err = -EOPNOTSUPP;
5940 goto out_free;
5941 }
5942 }
5943
5944 request->dev = dev;
5945 request->wiphy = &rdev->wiphy;
5946 request->interval = interval;
5947 request->scan_start = jiffies;
5948
5949 err = rdev_sched_scan_start(rdev, dev, request);
5950 if (!err) {
5951 rdev->sched_scan_req = request;
5952 nl80211_send_sched_scan(rdev, dev,
5953 NL80211_CMD_START_SCHED_SCAN);
5954 goto out;
5955 }
5956
5957 out_free:
5958 kfree(request);
5959 out:
5960 return err;
5961 }
5962
5963 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5964 struct genl_info *info)
5965 {
5966 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5967
5968 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5969 !rdev->ops->sched_scan_stop)
5970 return -EOPNOTSUPP;
5971
5972 return __cfg80211_stop_sched_scan(rdev, false);
5973 }
5974
5975 static int nl80211_start_radar_detection(struct sk_buff *skb,
5976 struct genl_info *info)
5977 {
5978 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5979 struct net_device *dev = info->user_ptr[1];
5980 struct wireless_dev *wdev = dev->ieee80211_ptr;
5981 struct cfg80211_chan_def chandef;
5982 enum nl80211_dfs_regions dfs_region;
5983 unsigned int cac_time_ms;
5984 int err;
5985
5986 dfs_region = reg_get_dfs_region(wdev->wiphy);
5987 if (dfs_region == NL80211_DFS_UNSET)
5988 return -EINVAL;
5989
5990 err = nl80211_parse_chandef(rdev, info, &chandef);
5991 if (err)
5992 return err;
5993
5994 if (netif_carrier_ok(dev))
5995 return -EBUSY;
5996
5997 if (wdev->cac_started)
5998 return -EBUSY;
5999
6000 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6001 wdev->iftype);
6002 if (err < 0)
6003 return err;
6004
6005 if (err == 0)
6006 return -EINVAL;
6007
6008 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6009 return -EINVAL;
6010
6011 if (!rdev->ops->start_radar_detection)
6012 return -EOPNOTSUPP;
6013
6014 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6015 if (WARN_ON(!cac_time_ms))
6016 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6017
6018 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6019 cac_time_ms);
6020 if (!err) {
6021 wdev->chandef = chandef;
6022 wdev->cac_started = true;
6023 wdev->cac_start_time = jiffies;
6024 wdev->cac_time_ms = cac_time_ms;
6025 }
6026 return err;
6027 }
6028
6029 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6030 {
6031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6032 struct net_device *dev = info->user_ptr[1];
6033 struct wireless_dev *wdev = dev->ieee80211_ptr;
6034 struct cfg80211_csa_settings params;
6035 /* csa_attrs is defined static to avoid waste of stack size - this
6036 * function is called under RTNL lock, so this should not be a problem.
6037 */
6038 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6039 u8 radar_detect_width = 0;
6040 int err;
6041 bool need_new_beacon = false;
6042 int len, i;
6043 u32 cs_count;
6044
6045 if (!rdev->ops->channel_switch ||
6046 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6047 return -EOPNOTSUPP;
6048
6049 switch (dev->ieee80211_ptr->iftype) {
6050 case NL80211_IFTYPE_AP:
6051 case NL80211_IFTYPE_P2P_GO:
6052 need_new_beacon = true;
6053
6054 /* useless if AP is not running */
6055 if (!wdev->beacon_interval)
6056 return -ENOTCONN;
6057 break;
6058 case NL80211_IFTYPE_ADHOC:
6059 if (!wdev->ssid_len)
6060 return -ENOTCONN;
6061 break;
6062 case NL80211_IFTYPE_MESH_POINT:
6063 if (!wdev->mesh_id_len)
6064 return -ENOTCONN;
6065 break;
6066 default:
6067 return -EOPNOTSUPP;
6068 }
6069
6070 memset(&params, 0, sizeof(params));
6071
6072 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6073 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6074 return -EINVAL;
6075
6076 /* only important for AP, IBSS and mesh create IEs internally */
6077 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6078 return -EINVAL;
6079
6080 /* Even though the attribute is u32, the specification says
6081 * u8, so let's make sure we don't overflow.
6082 */
6083 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6084 if (cs_count > 255)
6085 return -EINVAL;
6086
6087 params.count = cs_count;
6088
6089 if (!need_new_beacon)
6090 goto skip_beacons;
6091
6092 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6093 if (err)
6094 return err;
6095
6096 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6097 info->attrs[NL80211_ATTR_CSA_IES],
6098 nl80211_policy);
6099 if (err)
6100 return err;
6101
6102 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6103 if (err)
6104 return err;
6105
6106 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6107 return -EINVAL;
6108
6109 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6110 if (!len || (len % sizeof(u16)))
6111 return -EINVAL;
6112
6113 params.n_counter_offsets_beacon = len / sizeof(u16);
6114 if (rdev->wiphy.max_num_csa_counters &&
6115 (params.n_counter_offsets_beacon >
6116 rdev->wiphy.max_num_csa_counters))
6117 return -EINVAL;
6118
6119 params.counter_offsets_beacon =
6120 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6121
6122 /* sanity checks - counters should fit and be the same */
6123 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6124 u16 offset = params.counter_offsets_beacon[i];
6125
6126 if (offset >= params.beacon_csa.tail_len)
6127 return -EINVAL;
6128
6129 if (params.beacon_csa.tail[offset] != params.count)
6130 return -EINVAL;
6131 }
6132
6133 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6134 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6135 if (!len || (len % sizeof(u16)))
6136 return -EINVAL;
6137
6138 params.n_counter_offsets_presp = len / sizeof(u16);
6139 if (rdev->wiphy.max_num_csa_counters &&
6140 (params.n_counter_offsets_beacon >
6141 rdev->wiphy.max_num_csa_counters))
6142 return -EINVAL;
6143
6144 params.counter_offsets_presp =
6145 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6146
6147 /* sanity checks - counters should fit and be the same */
6148 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6149 u16 offset = params.counter_offsets_presp[i];
6150
6151 if (offset >= params.beacon_csa.probe_resp_len)
6152 return -EINVAL;
6153
6154 if (params.beacon_csa.probe_resp[offset] !=
6155 params.count)
6156 return -EINVAL;
6157 }
6158 }
6159
6160 skip_beacons:
6161 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6162 if (err)
6163 return err;
6164
6165 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6166 wdev->iftype))
6167 return -EINVAL;
6168
6169 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6170 &params.chandef,
6171 wdev->iftype);
6172 if (err < 0)
6173 return err;
6174
6175 if (err > 0) {
6176 radar_detect_width = BIT(params.chandef.width);
6177 params.radar_required = true;
6178 }
6179
6180 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6181 params.block_tx = true;
6182
6183 wdev_lock(wdev);
6184 err = rdev_channel_switch(rdev, dev, &params);
6185 wdev_unlock(wdev);
6186
6187 return err;
6188 }
6189
6190 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6191 u32 seq, int flags,
6192 struct cfg80211_registered_device *rdev,
6193 struct wireless_dev *wdev,
6194 struct cfg80211_internal_bss *intbss)
6195 {
6196 struct cfg80211_bss *res = &intbss->pub;
6197 const struct cfg80211_bss_ies *ies;
6198 void *hdr;
6199 struct nlattr *bss;
6200
6201 ASSERT_WDEV_LOCK(wdev);
6202
6203 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6204 NL80211_CMD_NEW_SCAN_RESULTS);
6205 if (!hdr)
6206 return -1;
6207
6208 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6209
6210 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6211 goto nla_put_failure;
6212 if (wdev->netdev &&
6213 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6214 goto nla_put_failure;
6215 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6216 goto nla_put_failure;
6217
6218 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6219 if (!bss)
6220 goto nla_put_failure;
6221 if ((!is_zero_ether_addr(res->bssid) &&
6222 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6223 goto nla_put_failure;
6224
6225 rcu_read_lock();
6226 /* indicate whether we have probe response data or not */
6227 if (rcu_access_pointer(res->proberesp_ies) &&
6228 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6229 goto fail_unlock_rcu;
6230
6231 /* this pointer prefers to be pointed to probe response data
6232 * but is always valid
6233 */
6234 ies = rcu_dereference(res->ies);
6235 if (ies) {
6236 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6237 goto fail_unlock_rcu;
6238 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6239 ies->len, ies->data))
6240 goto fail_unlock_rcu;
6241 }
6242
6243 /* and this pointer is always (unless driver didn't know) beacon data */
6244 ies = rcu_dereference(res->beacon_ies);
6245 if (ies && ies->from_beacon) {
6246 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6247 goto fail_unlock_rcu;
6248 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6249 ies->len, ies->data))
6250 goto fail_unlock_rcu;
6251 }
6252 rcu_read_unlock();
6253
6254 if (res->beacon_interval &&
6255 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6256 goto nla_put_failure;
6257 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6258 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6259 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6260 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6261 jiffies_to_msecs(jiffies - intbss->ts)))
6262 goto nla_put_failure;
6263
6264 switch (rdev->wiphy.signal_type) {
6265 case CFG80211_SIGNAL_TYPE_MBM:
6266 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6267 goto nla_put_failure;
6268 break;
6269 case CFG80211_SIGNAL_TYPE_UNSPEC:
6270 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6271 goto nla_put_failure;
6272 break;
6273 default:
6274 break;
6275 }
6276
6277 switch (wdev->iftype) {
6278 case NL80211_IFTYPE_P2P_CLIENT:
6279 case NL80211_IFTYPE_STATION:
6280 if (intbss == wdev->current_bss &&
6281 nla_put_u32(msg, NL80211_BSS_STATUS,
6282 NL80211_BSS_STATUS_ASSOCIATED))
6283 goto nla_put_failure;
6284 break;
6285 case NL80211_IFTYPE_ADHOC:
6286 if (intbss == wdev->current_bss &&
6287 nla_put_u32(msg, NL80211_BSS_STATUS,
6288 NL80211_BSS_STATUS_IBSS_JOINED))
6289 goto nla_put_failure;
6290 break;
6291 default:
6292 break;
6293 }
6294
6295 nla_nest_end(msg, bss);
6296
6297 return genlmsg_end(msg, hdr);
6298
6299 fail_unlock_rcu:
6300 rcu_read_unlock();
6301 nla_put_failure:
6302 genlmsg_cancel(msg, hdr);
6303 return -EMSGSIZE;
6304 }
6305
6306 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6307 {
6308 struct cfg80211_registered_device *rdev;
6309 struct cfg80211_internal_bss *scan;
6310 struct wireless_dev *wdev;
6311 int start = cb->args[2], idx = 0;
6312 int err;
6313
6314 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6315 if (err)
6316 return err;
6317
6318 wdev_lock(wdev);
6319 spin_lock_bh(&rdev->bss_lock);
6320 cfg80211_bss_expire(rdev);
6321
6322 cb->seq = rdev->bss_generation;
6323
6324 list_for_each_entry(scan, &rdev->bss_list, list) {
6325 if (++idx <= start)
6326 continue;
6327 if (nl80211_send_bss(skb, cb,
6328 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6329 rdev, wdev, scan) < 0) {
6330 idx--;
6331 break;
6332 }
6333 }
6334
6335 spin_unlock_bh(&rdev->bss_lock);
6336 wdev_unlock(wdev);
6337
6338 cb->args[2] = idx;
6339 nl80211_finish_wdev_dump(rdev);
6340
6341 return skb->len;
6342 }
6343
6344 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6345 int flags, struct net_device *dev,
6346 struct survey_info *survey)
6347 {
6348 void *hdr;
6349 struct nlattr *infoattr;
6350
6351 hdr = nl80211hdr_put(msg, portid, seq, flags,
6352 NL80211_CMD_NEW_SURVEY_RESULTS);
6353 if (!hdr)
6354 return -ENOMEM;
6355
6356 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6357 goto nla_put_failure;
6358
6359 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6360 if (!infoattr)
6361 goto nla_put_failure;
6362
6363 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6364 survey->channel->center_freq))
6365 goto nla_put_failure;
6366
6367 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6368 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6369 goto nla_put_failure;
6370 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6371 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6372 goto nla_put_failure;
6373 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6374 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6375 survey->channel_time))
6376 goto nla_put_failure;
6377 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6378 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6379 survey->channel_time_busy))
6380 goto nla_put_failure;
6381 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6382 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6383 survey->channel_time_ext_busy))
6384 goto nla_put_failure;
6385 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6386 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6387 survey->channel_time_rx))
6388 goto nla_put_failure;
6389 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6390 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6391 survey->channel_time_tx))
6392 goto nla_put_failure;
6393
6394 nla_nest_end(msg, infoattr);
6395
6396 return genlmsg_end(msg, hdr);
6397
6398 nla_put_failure:
6399 genlmsg_cancel(msg, hdr);
6400 return -EMSGSIZE;
6401 }
6402
6403 static int nl80211_dump_survey(struct sk_buff *skb,
6404 struct netlink_callback *cb)
6405 {
6406 struct survey_info survey;
6407 struct cfg80211_registered_device *rdev;
6408 struct wireless_dev *wdev;
6409 int survey_idx = cb->args[2];
6410 int res;
6411
6412 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6413 if (res)
6414 return res;
6415
6416 if (!wdev->netdev) {
6417 res = -EINVAL;
6418 goto out_err;
6419 }
6420
6421 if (!rdev->ops->dump_survey) {
6422 res = -EOPNOTSUPP;
6423 goto out_err;
6424 }
6425
6426 while (1) {
6427 struct ieee80211_channel *chan;
6428
6429 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6430 if (res == -ENOENT)
6431 break;
6432 if (res)
6433 goto out_err;
6434
6435 /* Survey without a channel doesn't make sense */
6436 if (!survey.channel) {
6437 res = -EINVAL;
6438 goto out;
6439 }
6440
6441 chan = ieee80211_get_channel(&rdev->wiphy,
6442 survey.channel->center_freq);
6443 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6444 survey_idx++;
6445 continue;
6446 }
6447
6448 if (nl80211_send_survey(skb,
6449 NETLINK_CB(cb->skb).portid,
6450 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6451 wdev->netdev, &survey) < 0)
6452 goto out;
6453 survey_idx++;
6454 }
6455
6456 out:
6457 cb->args[2] = survey_idx;
6458 res = skb->len;
6459 out_err:
6460 nl80211_finish_wdev_dump(rdev);
6461 return res;
6462 }
6463
6464 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6465 {
6466 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6467 NL80211_WPA_VERSION_2));
6468 }
6469
6470 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6471 {
6472 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6473 struct net_device *dev = info->user_ptr[1];
6474 struct ieee80211_channel *chan;
6475 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6476 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6477 enum nl80211_auth_type auth_type;
6478 struct key_parse key;
6479 bool local_state_change;
6480
6481 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6482 return -EINVAL;
6483
6484 if (!info->attrs[NL80211_ATTR_MAC])
6485 return -EINVAL;
6486
6487 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6488 return -EINVAL;
6489
6490 if (!info->attrs[NL80211_ATTR_SSID])
6491 return -EINVAL;
6492
6493 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6494 return -EINVAL;
6495
6496 err = nl80211_parse_key(info, &key);
6497 if (err)
6498 return err;
6499
6500 if (key.idx >= 0) {
6501 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6502 return -EINVAL;
6503 if (!key.p.key || !key.p.key_len)
6504 return -EINVAL;
6505 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6506 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6507 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6508 key.p.key_len != WLAN_KEY_LEN_WEP104))
6509 return -EINVAL;
6510 if (key.idx > 4)
6511 return -EINVAL;
6512 } else {
6513 key.p.key_len = 0;
6514 key.p.key = NULL;
6515 }
6516
6517 if (key.idx >= 0) {
6518 int i;
6519 bool ok = false;
6520 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6521 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6522 ok = true;
6523 break;
6524 }
6525 }
6526 if (!ok)
6527 return -EINVAL;
6528 }
6529
6530 if (!rdev->ops->auth)
6531 return -EOPNOTSUPP;
6532
6533 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6534 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6535 return -EOPNOTSUPP;
6536
6537 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6538 chan = nl80211_get_valid_chan(&rdev->wiphy,
6539 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6540 if (!chan)
6541 return -EINVAL;
6542
6543 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6544 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6545
6546 if (info->attrs[NL80211_ATTR_IE]) {
6547 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6548 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6549 }
6550
6551 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6552 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6553 return -EINVAL;
6554
6555 if (auth_type == NL80211_AUTHTYPE_SAE &&
6556 !info->attrs[NL80211_ATTR_SAE_DATA])
6557 return -EINVAL;
6558
6559 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6560 if (auth_type != NL80211_AUTHTYPE_SAE)
6561 return -EINVAL;
6562 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6563 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6564 /* need to include at least Auth Transaction and Status Code */
6565 if (sae_data_len < 4)
6566 return -EINVAL;
6567 }
6568
6569 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6570
6571 /*
6572 * Since we no longer track auth state, ignore
6573 * requests to only change local state.
6574 */
6575 if (local_state_change)
6576 return 0;
6577
6578 wdev_lock(dev->ieee80211_ptr);
6579 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6580 ssid, ssid_len, ie, ie_len,
6581 key.p.key, key.p.key_len, key.idx,
6582 sae_data, sae_data_len);
6583 wdev_unlock(dev->ieee80211_ptr);
6584 return err;
6585 }
6586
6587 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6588 struct genl_info *info,
6589 struct cfg80211_crypto_settings *settings,
6590 int cipher_limit)
6591 {
6592 memset(settings, 0, sizeof(*settings));
6593
6594 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6595
6596 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6597 u16 proto;
6598 proto = nla_get_u16(
6599 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6600 settings->control_port_ethertype = cpu_to_be16(proto);
6601 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6602 proto != ETH_P_PAE)
6603 return -EINVAL;
6604 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6605 settings->control_port_no_encrypt = true;
6606 } else
6607 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6608
6609 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6610 void *data;
6611 int len, i;
6612
6613 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6614 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6615 settings->n_ciphers_pairwise = len / sizeof(u32);
6616
6617 if (len % sizeof(u32))
6618 return -EINVAL;
6619
6620 if (settings->n_ciphers_pairwise > cipher_limit)
6621 return -EINVAL;
6622
6623 memcpy(settings->ciphers_pairwise, data, len);
6624
6625 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6626 if (!cfg80211_supported_cipher_suite(
6627 &rdev->wiphy,
6628 settings->ciphers_pairwise[i]))
6629 return -EINVAL;
6630 }
6631
6632 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6633 settings->cipher_group =
6634 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6635 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6636 settings->cipher_group))
6637 return -EINVAL;
6638 }
6639
6640 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6641 settings->wpa_versions =
6642 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6643 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6644 return -EINVAL;
6645 }
6646
6647 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6648 void *data;
6649 int len;
6650
6651 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6652 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6653 settings->n_akm_suites = len / sizeof(u32);
6654
6655 if (len % sizeof(u32))
6656 return -EINVAL;
6657
6658 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6659 return -EINVAL;
6660
6661 memcpy(settings->akm_suites, data, len);
6662 }
6663
6664 return 0;
6665 }
6666
6667 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6668 {
6669 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6670 struct net_device *dev = info->user_ptr[1];
6671 struct ieee80211_channel *chan;
6672 struct cfg80211_assoc_request req = {};
6673 const u8 *bssid, *ssid;
6674 int err, ssid_len = 0;
6675
6676 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6677 return -EINVAL;
6678
6679 if (!info->attrs[NL80211_ATTR_MAC] ||
6680 !info->attrs[NL80211_ATTR_SSID] ||
6681 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6682 return -EINVAL;
6683
6684 if (!rdev->ops->assoc)
6685 return -EOPNOTSUPP;
6686
6687 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6688 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6689 return -EOPNOTSUPP;
6690
6691 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6692
6693 chan = nl80211_get_valid_chan(&rdev->wiphy,
6694 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6695 if (!chan)
6696 return -EINVAL;
6697
6698 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6699 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6700
6701 if (info->attrs[NL80211_ATTR_IE]) {
6702 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6703 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6704 }
6705
6706 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6707 enum nl80211_mfp mfp =
6708 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6709 if (mfp == NL80211_MFP_REQUIRED)
6710 req.use_mfp = true;
6711 else if (mfp != NL80211_MFP_NO)
6712 return -EINVAL;
6713 }
6714
6715 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6716 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6717
6718 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6719 req.flags |= ASSOC_REQ_DISABLE_HT;
6720
6721 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6722 memcpy(&req.ht_capa_mask,
6723 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6724 sizeof(req.ht_capa_mask));
6725
6726 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6727 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6728 return -EINVAL;
6729 memcpy(&req.ht_capa,
6730 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6731 sizeof(req.ht_capa));
6732 }
6733
6734 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6735 req.flags |= ASSOC_REQ_DISABLE_VHT;
6736
6737 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6738 memcpy(&req.vht_capa_mask,
6739 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6740 sizeof(req.vht_capa_mask));
6741
6742 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6743 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6744 return -EINVAL;
6745 memcpy(&req.vht_capa,
6746 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6747 sizeof(req.vht_capa));
6748 }
6749
6750 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6751 if (!(rdev->wiphy.features &
6752 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6753 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6754 return -EINVAL;
6755 req.flags |= ASSOC_REQ_USE_RRM;
6756 }
6757
6758 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6759 if (!err) {
6760 wdev_lock(dev->ieee80211_ptr);
6761 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6762 ssid, ssid_len, &req);
6763 wdev_unlock(dev->ieee80211_ptr);
6764 }
6765
6766 return err;
6767 }
6768
6769 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6770 {
6771 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6772 struct net_device *dev = info->user_ptr[1];
6773 const u8 *ie = NULL, *bssid;
6774 int ie_len = 0, err;
6775 u16 reason_code;
6776 bool local_state_change;
6777
6778 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6779 return -EINVAL;
6780
6781 if (!info->attrs[NL80211_ATTR_MAC])
6782 return -EINVAL;
6783
6784 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6785 return -EINVAL;
6786
6787 if (!rdev->ops->deauth)
6788 return -EOPNOTSUPP;
6789
6790 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6791 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6792 return -EOPNOTSUPP;
6793
6794 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6795
6796 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6797 if (reason_code == 0) {
6798 /* Reason Code 0 is reserved */
6799 return -EINVAL;
6800 }
6801
6802 if (info->attrs[NL80211_ATTR_IE]) {
6803 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6804 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6805 }
6806
6807 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6808
6809 wdev_lock(dev->ieee80211_ptr);
6810 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6811 local_state_change);
6812 wdev_unlock(dev->ieee80211_ptr);
6813 return err;
6814 }
6815
6816 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6817 {
6818 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6819 struct net_device *dev = info->user_ptr[1];
6820 const u8 *ie = NULL, *bssid;
6821 int ie_len = 0, err;
6822 u16 reason_code;
6823 bool local_state_change;
6824
6825 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6826 return -EINVAL;
6827
6828 if (!info->attrs[NL80211_ATTR_MAC])
6829 return -EINVAL;
6830
6831 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6832 return -EINVAL;
6833
6834 if (!rdev->ops->disassoc)
6835 return -EOPNOTSUPP;
6836
6837 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6838 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6839 return -EOPNOTSUPP;
6840
6841 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6842
6843 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6844 if (reason_code == 0) {
6845 /* Reason Code 0 is reserved */
6846 return -EINVAL;
6847 }
6848
6849 if (info->attrs[NL80211_ATTR_IE]) {
6850 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6851 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6852 }
6853
6854 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6855
6856 wdev_lock(dev->ieee80211_ptr);
6857 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6858 local_state_change);
6859 wdev_unlock(dev->ieee80211_ptr);
6860 return err;
6861 }
6862
6863 static bool
6864 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6865 int mcast_rate[IEEE80211_NUM_BANDS],
6866 int rateval)
6867 {
6868 struct wiphy *wiphy = &rdev->wiphy;
6869 bool found = false;
6870 int band, i;
6871
6872 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6873 struct ieee80211_supported_band *sband;
6874
6875 sband = wiphy->bands[band];
6876 if (!sband)
6877 continue;
6878
6879 for (i = 0; i < sband->n_bitrates; i++) {
6880 if (sband->bitrates[i].bitrate == rateval) {
6881 mcast_rate[band] = i + 1;
6882 found = true;
6883 break;
6884 }
6885 }
6886 }
6887
6888 return found;
6889 }
6890
6891 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6892 {
6893 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6894 struct net_device *dev = info->user_ptr[1];
6895 struct cfg80211_ibss_params ibss;
6896 struct wiphy *wiphy;
6897 struct cfg80211_cached_keys *connkeys = NULL;
6898 int err;
6899
6900 memset(&ibss, 0, sizeof(ibss));
6901
6902 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6903 return -EINVAL;
6904
6905 if (!info->attrs[NL80211_ATTR_SSID] ||
6906 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6907 return -EINVAL;
6908
6909 ibss.beacon_interval = 100;
6910
6911 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6912 ibss.beacon_interval =
6913 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6914 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6915 return -EINVAL;
6916 }
6917
6918 if (!rdev->ops->join_ibss)
6919 return -EOPNOTSUPP;
6920
6921 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6922 return -EOPNOTSUPP;
6923
6924 wiphy = &rdev->wiphy;
6925
6926 if (info->attrs[NL80211_ATTR_MAC]) {
6927 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6928
6929 if (!is_valid_ether_addr(ibss.bssid))
6930 return -EINVAL;
6931 }
6932 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6933 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6934
6935 if (info->attrs[NL80211_ATTR_IE]) {
6936 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6937 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6938 }
6939
6940 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6941 if (err)
6942 return err;
6943
6944 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6945 NL80211_IFTYPE_ADHOC))
6946 return -EINVAL;
6947
6948 switch (ibss.chandef.width) {
6949 case NL80211_CHAN_WIDTH_5:
6950 case NL80211_CHAN_WIDTH_10:
6951 case NL80211_CHAN_WIDTH_20_NOHT:
6952 break;
6953 case NL80211_CHAN_WIDTH_20:
6954 case NL80211_CHAN_WIDTH_40:
6955 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6956 break;
6957 default:
6958 return -EINVAL;
6959 }
6960
6961 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6962 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6963
6964 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6965 u8 *rates =
6966 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6967 int n_rates =
6968 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6969 struct ieee80211_supported_band *sband =
6970 wiphy->bands[ibss.chandef.chan->band];
6971
6972 err = ieee80211_get_ratemask(sband, rates, n_rates,
6973 &ibss.basic_rates);
6974 if (err)
6975 return err;
6976 }
6977
6978 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6979 memcpy(&ibss.ht_capa_mask,
6980 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6981 sizeof(ibss.ht_capa_mask));
6982
6983 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6984 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6985 return -EINVAL;
6986 memcpy(&ibss.ht_capa,
6987 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6988 sizeof(ibss.ht_capa));
6989 }
6990
6991 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6992 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6993 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6994 return -EINVAL;
6995
6996 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6997 bool no_ht = false;
6998
6999 connkeys = nl80211_parse_connkeys(rdev,
7000 info->attrs[NL80211_ATTR_KEYS],
7001 &no_ht);
7002 if (IS_ERR(connkeys))
7003 return PTR_ERR(connkeys);
7004
7005 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7006 no_ht) {
7007 kfree(connkeys);
7008 return -EINVAL;
7009 }
7010 }
7011
7012 ibss.control_port =
7013 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7014
7015 ibss.userspace_handles_dfs =
7016 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7017
7018 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7019 if (err)
7020 kzfree(connkeys);
7021 return err;
7022 }
7023
7024 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7025 {
7026 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7027 struct net_device *dev = info->user_ptr[1];
7028
7029 if (!rdev->ops->leave_ibss)
7030 return -EOPNOTSUPP;
7031
7032 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7033 return -EOPNOTSUPP;
7034
7035 return cfg80211_leave_ibss(rdev, dev, false);
7036 }
7037
7038 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7039 {
7040 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7041 struct net_device *dev = info->user_ptr[1];
7042 int mcast_rate[IEEE80211_NUM_BANDS];
7043 u32 nla_rate;
7044 int err;
7045
7046 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7047 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7048 return -EOPNOTSUPP;
7049
7050 if (!rdev->ops->set_mcast_rate)
7051 return -EOPNOTSUPP;
7052
7053 memset(mcast_rate, 0, sizeof(mcast_rate));
7054
7055 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7056 return -EINVAL;
7057
7058 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7059 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7060 return -EINVAL;
7061
7062 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7063
7064 return err;
7065 }
7066
7067 static struct sk_buff *
7068 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7069 int approxlen, u32 portid, u32 seq,
7070 enum nl80211_commands cmd,
7071 enum nl80211_attrs attr,
7072 const struct nl80211_vendor_cmd_info *info,
7073 gfp_t gfp)
7074 {
7075 struct sk_buff *skb;
7076 void *hdr;
7077 struct nlattr *data;
7078
7079 skb = nlmsg_new(approxlen + 100, gfp);
7080 if (!skb)
7081 return NULL;
7082
7083 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7084 if (!hdr) {
7085 kfree_skb(skb);
7086 return NULL;
7087 }
7088
7089 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7090 goto nla_put_failure;
7091
7092 if (info) {
7093 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7094 info->vendor_id))
7095 goto nla_put_failure;
7096 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7097 info->subcmd))
7098 goto nla_put_failure;
7099 }
7100
7101 data = nla_nest_start(skb, attr);
7102
7103 ((void **)skb->cb)[0] = rdev;
7104 ((void **)skb->cb)[1] = hdr;
7105 ((void **)skb->cb)[2] = data;
7106
7107 return skb;
7108
7109 nla_put_failure:
7110 kfree_skb(skb);
7111 return NULL;
7112 }
7113
7114 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7115 enum nl80211_commands cmd,
7116 enum nl80211_attrs attr,
7117 int vendor_event_idx,
7118 int approxlen, gfp_t gfp)
7119 {
7120 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7121 const struct nl80211_vendor_cmd_info *info;
7122
7123 switch (cmd) {
7124 case NL80211_CMD_TESTMODE:
7125 if (WARN_ON(vendor_event_idx != -1))
7126 return NULL;
7127 info = NULL;
7128 break;
7129 case NL80211_CMD_VENDOR:
7130 if (WARN_ON(vendor_event_idx < 0 ||
7131 vendor_event_idx >= wiphy->n_vendor_events))
7132 return NULL;
7133 info = &wiphy->vendor_events[vendor_event_idx];
7134 break;
7135 default:
7136 WARN_ON(1);
7137 return NULL;
7138 }
7139
7140 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7141 cmd, attr, info, gfp);
7142 }
7143 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7144
7145 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7146 {
7147 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7148 void *hdr = ((void **)skb->cb)[1];
7149 struct nlattr *data = ((void **)skb->cb)[2];
7150 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7151
7152 /* clear CB data for netlink core to own from now on */
7153 memset(skb->cb, 0, sizeof(skb->cb));
7154
7155 nla_nest_end(skb, data);
7156 genlmsg_end(skb, hdr);
7157
7158 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7159 mcgrp = NL80211_MCGRP_VENDOR;
7160
7161 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7162 mcgrp, gfp);
7163 }
7164 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7165
7166 #ifdef CONFIG_NL80211_TESTMODE
7167 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7168 {
7169 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7170 struct wireless_dev *wdev =
7171 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7172 int err;
7173
7174 if (!rdev->ops->testmode_cmd)
7175 return -EOPNOTSUPP;
7176
7177 if (IS_ERR(wdev)) {
7178 err = PTR_ERR(wdev);
7179 if (err != -EINVAL)
7180 return err;
7181 wdev = NULL;
7182 } else if (wdev->wiphy != &rdev->wiphy) {
7183 return -EINVAL;
7184 }
7185
7186 if (!info->attrs[NL80211_ATTR_TESTDATA])
7187 return -EINVAL;
7188
7189 rdev->cur_cmd_info = info;
7190 err = rdev_testmode_cmd(rdev, wdev,
7191 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7192 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7193 rdev->cur_cmd_info = NULL;
7194
7195 return err;
7196 }
7197
7198 static int nl80211_testmode_dump(struct sk_buff *skb,
7199 struct netlink_callback *cb)
7200 {
7201 struct cfg80211_registered_device *rdev;
7202 int err;
7203 long phy_idx;
7204 void *data = NULL;
7205 int data_len = 0;
7206
7207 rtnl_lock();
7208
7209 if (cb->args[0]) {
7210 /*
7211 * 0 is a valid index, but not valid for args[0],
7212 * so we need to offset by 1.
7213 */
7214 phy_idx = cb->args[0] - 1;
7215 } else {
7216 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7217 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7218 nl80211_policy);
7219 if (err)
7220 goto out_err;
7221
7222 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7223 nl80211_fam.attrbuf);
7224 if (IS_ERR(rdev)) {
7225 err = PTR_ERR(rdev);
7226 goto out_err;
7227 }
7228 phy_idx = rdev->wiphy_idx;
7229 rdev = NULL;
7230
7231 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7232 cb->args[1] =
7233 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7234 }
7235
7236 if (cb->args[1]) {
7237 data = nla_data((void *)cb->args[1]);
7238 data_len = nla_len((void *)cb->args[1]);
7239 }
7240
7241 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7242 if (!rdev) {
7243 err = -ENOENT;
7244 goto out_err;
7245 }
7246
7247 if (!rdev->ops->testmode_dump) {
7248 err = -EOPNOTSUPP;
7249 goto out_err;
7250 }
7251
7252 while (1) {
7253 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7254 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7255 NL80211_CMD_TESTMODE);
7256 struct nlattr *tmdata;
7257
7258 if (!hdr)
7259 break;
7260
7261 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7262 genlmsg_cancel(skb, hdr);
7263 break;
7264 }
7265
7266 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7267 if (!tmdata) {
7268 genlmsg_cancel(skb, hdr);
7269 break;
7270 }
7271 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7272 nla_nest_end(skb, tmdata);
7273
7274 if (err == -ENOBUFS || err == -ENOENT) {
7275 genlmsg_cancel(skb, hdr);
7276 break;
7277 } else if (err) {
7278 genlmsg_cancel(skb, hdr);
7279 goto out_err;
7280 }
7281
7282 genlmsg_end(skb, hdr);
7283 }
7284
7285 err = skb->len;
7286 /* see above */
7287 cb->args[0] = phy_idx + 1;
7288 out_err:
7289 rtnl_unlock();
7290 return err;
7291 }
7292 #endif
7293
7294 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7295 {
7296 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7297 struct net_device *dev = info->user_ptr[1];
7298 struct cfg80211_connect_params connect;
7299 struct wiphy *wiphy;
7300 struct cfg80211_cached_keys *connkeys = NULL;
7301 int err;
7302
7303 memset(&connect, 0, sizeof(connect));
7304
7305 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7306 return -EINVAL;
7307
7308 if (!info->attrs[NL80211_ATTR_SSID] ||
7309 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7310 return -EINVAL;
7311
7312 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7313 connect.auth_type =
7314 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7315 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7316 NL80211_CMD_CONNECT))
7317 return -EINVAL;
7318 } else
7319 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7320
7321 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7322
7323 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7324 NL80211_MAX_NR_CIPHER_SUITES);
7325 if (err)
7326 return err;
7327
7328 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7329 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7330 return -EOPNOTSUPP;
7331
7332 wiphy = &rdev->wiphy;
7333
7334 connect.bg_scan_period = -1;
7335 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7336 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7337 connect.bg_scan_period =
7338 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7339 }
7340
7341 if (info->attrs[NL80211_ATTR_MAC])
7342 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7343 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7344 connect.bssid_hint =
7345 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7346 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7347 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7348
7349 if (info->attrs[NL80211_ATTR_IE]) {
7350 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7351 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7352 }
7353
7354 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7355 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7356 if (connect.mfp != NL80211_MFP_REQUIRED &&
7357 connect.mfp != NL80211_MFP_NO)
7358 return -EINVAL;
7359 } else {
7360 connect.mfp = NL80211_MFP_NO;
7361 }
7362
7363 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7364 connect.channel = nl80211_get_valid_chan(
7365 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7366 if (!connect.channel)
7367 return -EINVAL;
7368 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7369 connect.channel_hint = nl80211_get_valid_chan(
7370 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7371 if (!connect.channel_hint)
7372 return -EINVAL;
7373 }
7374
7375 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7376 connkeys = nl80211_parse_connkeys(rdev,
7377 info->attrs[NL80211_ATTR_KEYS], NULL);
7378 if (IS_ERR(connkeys))
7379 return PTR_ERR(connkeys);
7380 }
7381
7382 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7383 connect.flags |= ASSOC_REQ_DISABLE_HT;
7384
7385 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7386 memcpy(&connect.ht_capa_mask,
7387 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7388 sizeof(connect.ht_capa_mask));
7389
7390 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7391 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7392 kzfree(connkeys);
7393 return -EINVAL;
7394 }
7395 memcpy(&connect.ht_capa,
7396 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7397 sizeof(connect.ht_capa));
7398 }
7399
7400 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7401 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7402
7403 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7404 memcpy(&connect.vht_capa_mask,
7405 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7406 sizeof(connect.vht_capa_mask));
7407
7408 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7409 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7410 kzfree(connkeys);
7411 return -EINVAL;
7412 }
7413 memcpy(&connect.vht_capa,
7414 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7415 sizeof(connect.vht_capa));
7416 }
7417
7418 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7419 if (!(rdev->wiphy.features &
7420 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7421 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7422 return -EINVAL;
7423 connect.flags |= ASSOC_REQ_USE_RRM;
7424 }
7425
7426 wdev_lock(dev->ieee80211_ptr);
7427 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7428 wdev_unlock(dev->ieee80211_ptr);
7429 if (err)
7430 kzfree(connkeys);
7431 return err;
7432 }
7433
7434 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7435 {
7436 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7437 struct net_device *dev = info->user_ptr[1];
7438 u16 reason;
7439 int ret;
7440
7441 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7442 reason = WLAN_REASON_DEAUTH_LEAVING;
7443 else
7444 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7445
7446 if (reason == 0)
7447 return -EINVAL;
7448
7449 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7450 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7451 return -EOPNOTSUPP;
7452
7453 wdev_lock(dev->ieee80211_ptr);
7454 ret = cfg80211_disconnect(rdev, dev, reason, true);
7455 wdev_unlock(dev->ieee80211_ptr);
7456 return ret;
7457 }
7458
7459 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7460 {
7461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7462 struct net *net;
7463 int err;
7464 u32 pid;
7465
7466 if (!info->attrs[NL80211_ATTR_PID])
7467 return -EINVAL;
7468
7469 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7470
7471 net = get_net_ns_by_pid(pid);
7472 if (IS_ERR(net))
7473 return PTR_ERR(net);
7474
7475 err = 0;
7476
7477 /* check if anything to do */
7478 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7479 err = cfg80211_switch_netns(rdev, net);
7480
7481 put_net(net);
7482 return err;
7483 }
7484
7485 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7486 {
7487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7488 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7489 struct cfg80211_pmksa *pmksa) = NULL;
7490 struct net_device *dev = info->user_ptr[1];
7491 struct cfg80211_pmksa pmksa;
7492
7493 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7494
7495 if (!info->attrs[NL80211_ATTR_MAC])
7496 return -EINVAL;
7497
7498 if (!info->attrs[NL80211_ATTR_PMKID])
7499 return -EINVAL;
7500
7501 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7502 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7503
7504 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7505 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7506 return -EOPNOTSUPP;
7507
7508 switch (info->genlhdr->cmd) {
7509 case NL80211_CMD_SET_PMKSA:
7510 rdev_ops = rdev->ops->set_pmksa;
7511 break;
7512 case NL80211_CMD_DEL_PMKSA:
7513 rdev_ops = rdev->ops->del_pmksa;
7514 break;
7515 default:
7516 WARN_ON(1);
7517 break;
7518 }
7519
7520 if (!rdev_ops)
7521 return -EOPNOTSUPP;
7522
7523 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7524 }
7525
7526 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7527 {
7528 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7529 struct net_device *dev = info->user_ptr[1];
7530
7531 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7532 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7533 return -EOPNOTSUPP;
7534
7535 if (!rdev->ops->flush_pmksa)
7536 return -EOPNOTSUPP;
7537
7538 return rdev_flush_pmksa(rdev, dev);
7539 }
7540
7541 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7542 {
7543 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7544 struct net_device *dev = info->user_ptr[1];
7545 u8 action_code, dialog_token;
7546 u32 peer_capability = 0;
7547 u16 status_code;
7548 u8 *peer;
7549 bool initiator;
7550
7551 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7552 !rdev->ops->tdls_mgmt)
7553 return -EOPNOTSUPP;
7554
7555 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7556 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7557 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7558 !info->attrs[NL80211_ATTR_IE] ||
7559 !info->attrs[NL80211_ATTR_MAC])
7560 return -EINVAL;
7561
7562 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7563 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7564 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7565 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7566 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7567 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7568 peer_capability =
7569 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7570
7571 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7572 dialog_token, status_code, peer_capability,
7573 initiator,
7574 nla_data(info->attrs[NL80211_ATTR_IE]),
7575 nla_len(info->attrs[NL80211_ATTR_IE]));
7576 }
7577
7578 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7579 {
7580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7581 struct net_device *dev = info->user_ptr[1];
7582 enum nl80211_tdls_operation operation;
7583 u8 *peer;
7584
7585 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7586 !rdev->ops->tdls_oper)
7587 return -EOPNOTSUPP;
7588
7589 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7590 !info->attrs[NL80211_ATTR_MAC])
7591 return -EINVAL;
7592
7593 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7594 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7595
7596 return rdev_tdls_oper(rdev, dev, peer, operation);
7597 }
7598
7599 static int nl80211_remain_on_channel(struct sk_buff *skb,
7600 struct genl_info *info)
7601 {
7602 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7603 struct wireless_dev *wdev = info->user_ptr[1];
7604 struct cfg80211_chan_def chandef;
7605 struct sk_buff *msg;
7606 void *hdr;
7607 u64 cookie;
7608 u32 duration;
7609 int err;
7610
7611 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7612 !info->attrs[NL80211_ATTR_DURATION])
7613 return -EINVAL;
7614
7615 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7616
7617 if (!rdev->ops->remain_on_channel ||
7618 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7619 return -EOPNOTSUPP;
7620
7621 /*
7622 * We should be on that channel for at least a minimum amount of
7623 * time (10ms) but no longer than the driver supports.
7624 */
7625 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7626 duration > rdev->wiphy.max_remain_on_channel_duration)
7627 return -EINVAL;
7628
7629 err = nl80211_parse_chandef(rdev, info, &chandef);
7630 if (err)
7631 return err;
7632
7633 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7634 if (!msg)
7635 return -ENOMEM;
7636
7637 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7638 NL80211_CMD_REMAIN_ON_CHANNEL);
7639 if (!hdr) {
7640 err = -ENOBUFS;
7641 goto free_msg;
7642 }
7643
7644 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7645 duration, &cookie);
7646
7647 if (err)
7648 goto free_msg;
7649
7650 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7651 goto nla_put_failure;
7652
7653 genlmsg_end(msg, hdr);
7654
7655 return genlmsg_reply(msg, info);
7656
7657 nla_put_failure:
7658 err = -ENOBUFS;
7659 free_msg:
7660 nlmsg_free(msg);
7661 return err;
7662 }
7663
7664 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7665 struct genl_info *info)
7666 {
7667 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7668 struct wireless_dev *wdev = info->user_ptr[1];
7669 u64 cookie;
7670
7671 if (!info->attrs[NL80211_ATTR_COOKIE])
7672 return -EINVAL;
7673
7674 if (!rdev->ops->cancel_remain_on_channel)
7675 return -EOPNOTSUPP;
7676
7677 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7678
7679 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7680 }
7681
7682 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7683 u8 *rates, u8 rates_len)
7684 {
7685 u8 i;
7686 u32 mask = 0;
7687
7688 for (i = 0; i < rates_len; i++) {
7689 int rate = (rates[i] & 0x7f) * 5;
7690 int ridx;
7691 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7692 struct ieee80211_rate *srate =
7693 &sband->bitrates[ridx];
7694 if (rate == srate->bitrate) {
7695 mask |= 1 << ridx;
7696 break;
7697 }
7698 }
7699 if (ridx == sband->n_bitrates)
7700 return 0; /* rate not found */
7701 }
7702
7703 return mask;
7704 }
7705
7706 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7707 u8 *rates, u8 rates_len,
7708 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7709 {
7710 u8 i;
7711
7712 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7713
7714 for (i = 0; i < rates_len; i++) {
7715 int ridx, rbit;
7716
7717 ridx = rates[i] / 8;
7718 rbit = BIT(rates[i] % 8);
7719
7720 /* check validity */
7721 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7722 return false;
7723
7724 /* check availability */
7725 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7726 mcs[ridx] |= rbit;
7727 else
7728 return false;
7729 }
7730
7731 return true;
7732 }
7733
7734 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7735 {
7736 u16 mcs_mask = 0;
7737
7738 switch (vht_mcs_map) {
7739 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7740 break;
7741 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7742 mcs_mask = 0x00FF;
7743 break;
7744 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7745 mcs_mask = 0x01FF;
7746 break;
7747 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7748 mcs_mask = 0x03FF;
7749 break;
7750 default:
7751 break;
7752 }
7753
7754 return mcs_mask;
7755 }
7756
7757 static void vht_build_mcs_mask(u16 vht_mcs_map,
7758 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7759 {
7760 u8 nss;
7761
7762 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7763 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7764 vht_mcs_map >>= 2;
7765 }
7766 }
7767
7768 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7769 struct nl80211_txrate_vht *txrate,
7770 u16 mcs[NL80211_VHT_NSS_MAX])
7771 {
7772 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7773 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7774 u8 i;
7775
7776 if (!sband->vht_cap.vht_supported)
7777 return false;
7778
7779 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7780
7781 /* Build vht_mcs_mask from VHT capabilities */
7782 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7783
7784 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7785 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7786 mcs[i] = txrate->mcs[i];
7787 else
7788 return false;
7789 }
7790
7791 return true;
7792 }
7793
7794 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7795 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7796 .len = NL80211_MAX_SUPP_RATES },
7797 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7798 .len = NL80211_MAX_SUPP_HT_RATES },
7799 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7800 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7801 };
7802
7803 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7804 struct genl_info *info)
7805 {
7806 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7807 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7808 struct cfg80211_bitrate_mask mask;
7809 int rem, i;
7810 struct net_device *dev = info->user_ptr[1];
7811 struct nlattr *tx_rates;
7812 struct ieee80211_supported_band *sband;
7813 u16 vht_tx_mcs_map;
7814
7815 if (!rdev->ops->set_bitrate_mask)
7816 return -EOPNOTSUPP;
7817
7818 memset(&mask, 0, sizeof(mask));
7819 /* Default to all rates enabled */
7820 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7821 sband = rdev->wiphy.bands[i];
7822
7823 if (!sband)
7824 continue;
7825
7826 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7827 memcpy(mask.control[i].ht_mcs,
7828 sband->ht_cap.mcs.rx_mask,
7829 sizeof(mask.control[i].ht_mcs));
7830
7831 if (!sband->vht_cap.vht_supported)
7832 continue;
7833
7834 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7835 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7836 }
7837
7838 /* if no rates are given set it back to the defaults */
7839 if (!info->attrs[NL80211_ATTR_TX_RATES])
7840 goto out;
7841
7842 /*
7843 * The nested attribute uses enum nl80211_band as the index. This maps
7844 * directly to the enum ieee80211_band values used in cfg80211.
7845 */
7846 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7847 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7848 enum ieee80211_band band = nla_type(tx_rates);
7849 int err;
7850
7851 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7852 return -EINVAL;
7853 sband = rdev->wiphy.bands[band];
7854 if (sband == NULL)
7855 return -EINVAL;
7856 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7857 nla_len(tx_rates), nl80211_txattr_policy);
7858 if (err)
7859 return err;
7860 if (tb[NL80211_TXRATE_LEGACY]) {
7861 mask.control[band].legacy = rateset_to_mask(
7862 sband,
7863 nla_data(tb[NL80211_TXRATE_LEGACY]),
7864 nla_len(tb[NL80211_TXRATE_LEGACY]));
7865 if ((mask.control[band].legacy == 0) &&
7866 nla_len(tb[NL80211_TXRATE_LEGACY]))
7867 return -EINVAL;
7868 }
7869 if (tb[NL80211_TXRATE_HT]) {
7870 if (!ht_rateset_to_mask(
7871 sband,
7872 nla_data(tb[NL80211_TXRATE_HT]),
7873 nla_len(tb[NL80211_TXRATE_HT]),
7874 mask.control[band].ht_mcs))
7875 return -EINVAL;
7876 }
7877 if (tb[NL80211_TXRATE_VHT]) {
7878 if (!vht_set_mcs_mask(
7879 sband,
7880 nla_data(tb[NL80211_TXRATE_VHT]),
7881 mask.control[band].vht_mcs))
7882 return -EINVAL;
7883 }
7884 if (tb[NL80211_TXRATE_GI]) {
7885 mask.control[band].gi =
7886 nla_get_u8(tb[NL80211_TXRATE_GI]);
7887 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7888 return -EINVAL;
7889 }
7890
7891 if (mask.control[band].legacy == 0) {
7892 /* don't allow empty legacy rates if HT or VHT
7893 * are not even supported.
7894 */
7895 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7896 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7897 return -EINVAL;
7898
7899 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7900 if (mask.control[band].ht_mcs[i])
7901 goto out;
7902
7903 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7904 if (mask.control[band].vht_mcs[i])
7905 goto out;
7906
7907 /* legacy and mcs rates may not be both empty */
7908 return -EINVAL;
7909 }
7910 }
7911
7912 out:
7913 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7914 }
7915
7916 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7917 {
7918 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7919 struct wireless_dev *wdev = info->user_ptr[1];
7920 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7921
7922 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7923 return -EINVAL;
7924
7925 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7926 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7927
7928 switch (wdev->iftype) {
7929 case NL80211_IFTYPE_STATION:
7930 case NL80211_IFTYPE_ADHOC:
7931 case NL80211_IFTYPE_P2P_CLIENT:
7932 case NL80211_IFTYPE_AP:
7933 case NL80211_IFTYPE_AP_VLAN:
7934 case NL80211_IFTYPE_MESH_POINT:
7935 case NL80211_IFTYPE_P2P_GO:
7936 case NL80211_IFTYPE_P2P_DEVICE:
7937 break;
7938 default:
7939 return -EOPNOTSUPP;
7940 }
7941
7942 /* not much point in registering if we can't reply */
7943 if (!rdev->ops->mgmt_tx)
7944 return -EOPNOTSUPP;
7945
7946 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7947 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7948 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7949 }
7950
7951 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7952 {
7953 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7954 struct wireless_dev *wdev = info->user_ptr[1];
7955 struct cfg80211_chan_def chandef;
7956 int err;
7957 void *hdr = NULL;
7958 u64 cookie;
7959 struct sk_buff *msg = NULL;
7960 struct cfg80211_mgmt_tx_params params = {
7961 .dont_wait_for_ack =
7962 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7963 };
7964
7965 if (!info->attrs[NL80211_ATTR_FRAME])
7966 return -EINVAL;
7967
7968 if (!rdev->ops->mgmt_tx)
7969 return -EOPNOTSUPP;
7970
7971 switch (wdev->iftype) {
7972 case NL80211_IFTYPE_P2P_DEVICE:
7973 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7974 return -EINVAL;
7975 case NL80211_IFTYPE_STATION:
7976 case NL80211_IFTYPE_ADHOC:
7977 case NL80211_IFTYPE_P2P_CLIENT:
7978 case NL80211_IFTYPE_AP:
7979 case NL80211_IFTYPE_AP_VLAN:
7980 case NL80211_IFTYPE_MESH_POINT:
7981 case NL80211_IFTYPE_P2P_GO:
7982 break;
7983 default:
7984 return -EOPNOTSUPP;
7985 }
7986
7987 if (info->attrs[NL80211_ATTR_DURATION]) {
7988 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7989 return -EINVAL;
7990 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7991
7992 /*
7993 * We should wait on the channel for at least a minimum amount
7994 * of time (10ms) but no longer than the driver supports.
7995 */
7996 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7997 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7998 return -EINVAL;
7999
8000 }
8001
8002 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8003
8004 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8005 return -EINVAL;
8006
8007 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8008
8009 /* get the channel if any has been specified, otherwise pass NULL to
8010 * the driver. The latter will use the current one
8011 */
8012 chandef.chan = NULL;
8013 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8014 err = nl80211_parse_chandef(rdev, info, &chandef);
8015 if (err)
8016 return err;
8017 }
8018
8019 if (!chandef.chan && params.offchan)
8020 return -EINVAL;
8021
8022 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8023 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8024
8025 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8026 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8027 int i;
8028
8029 if (len % sizeof(u16))
8030 return -EINVAL;
8031
8032 params.n_csa_offsets = len / sizeof(u16);
8033 params.csa_offsets =
8034 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8035
8036 /* check that all the offsets fit the frame */
8037 for (i = 0; i < params.n_csa_offsets; i++) {
8038 if (params.csa_offsets[i] >= params.len)
8039 return -EINVAL;
8040 }
8041 }
8042
8043 if (!params.dont_wait_for_ack) {
8044 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8045 if (!msg)
8046 return -ENOMEM;
8047
8048 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8049 NL80211_CMD_FRAME);
8050 if (!hdr) {
8051 err = -ENOBUFS;
8052 goto free_msg;
8053 }
8054 }
8055
8056 params.chan = chandef.chan;
8057 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8058 if (err)
8059 goto free_msg;
8060
8061 if (msg) {
8062 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8063 goto nla_put_failure;
8064
8065 genlmsg_end(msg, hdr);
8066 return genlmsg_reply(msg, info);
8067 }
8068
8069 return 0;
8070
8071 nla_put_failure:
8072 err = -ENOBUFS;
8073 free_msg:
8074 nlmsg_free(msg);
8075 return err;
8076 }
8077
8078 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8079 {
8080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8081 struct wireless_dev *wdev = info->user_ptr[1];
8082 u64 cookie;
8083
8084 if (!info->attrs[NL80211_ATTR_COOKIE])
8085 return -EINVAL;
8086
8087 if (!rdev->ops->mgmt_tx_cancel_wait)
8088 return -EOPNOTSUPP;
8089
8090 switch (wdev->iftype) {
8091 case NL80211_IFTYPE_STATION:
8092 case NL80211_IFTYPE_ADHOC:
8093 case NL80211_IFTYPE_P2P_CLIENT:
8094 case NL80211_IFTYPE_AP:
8095 case NL80211_IFTYPE_AP_VLAN:
8096 case NL80211_IFTYPE_P2P_GO:
8097 case NL80211_IFTYPE_P2P_DEVICE:
8098 break;
8099 default:
8100 return -EOPNOTSUPP;
8101 }
8102
8103 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8104
8105 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8106 }
8107
8108 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8109 {
8110 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8111 struct wireless_dev *wdev;
8112 struct net_device *dev = info->user_ptr[1];
8113 u8 ps_state;
8114 bool state;
8115 int err;
8116
8117 if (!info->attrs[NL80211_ATTR_PS_STATE])
8118 return -EINVAL;
8119
8120 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8121
8122 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8123 return -EINVAL;
8124
8125 wdev = dev->ieee80211_ptr;
8126
8127 if (!rdev->ops->set_power_mgmt)
8128 return -EOPNOTSUPP;
8129
8130 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8131
8132 if (state == wdev->ps)
8133 return 0;
8134
8135 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8136 if (!err)
8137 wdev->ps = state;
8138 return err;
8139 }
8140
8141 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8142 {
8143 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8144 enum nl80211_ps_state ps_state;
8145 struct wireless_dev *wdev;
8146 struct net_device *dev = info->user_ptr[1];
8147 struct sk_buff *msg;
8148 void *hdr;
8149 int err;
8150
8151 wdev = dev->ieee80211_ptr;
8152
8153 if (!rdev->ops->set_power_mgmt)
8154 return -EOPNOTSUPP;
8155
8156 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8157 if (!msg)
8158 return -ENOMEM;
8159
8160 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8161 NL80211_CMD_GET_POWER_SAVE);
8162 if (!hdr) {
8163 err = -ENOBUFS;
8164 goto free_msg;
8165 }
8166
8167 if (wdev->ps)
8168 ps_state = NL80211_PS_ENABLED;
8169 else
8170 ps_state = NL80211_PS_DISABLED;
8171
8172 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8173 goto nla_put_failure;
8174
8175 genlmsg_end(msg, hdr);
8176 return genlmsg_reply(msg, info);
8177
8178 nla_put_failure:
8179 err = -ENOBUFS;
8180 free_msg:
8181 nlmsg_free(msg);
8182 return err;
8183 }
8184
8185 static const struct nla_policy
8186 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8187 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8188 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8189 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8190 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8191 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8192 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8193 };
8194
8195 static int nl80211_set_cqm_txe(struct genl_info *info,
8196 u32 rate, u32 pkts, u32 intvl)
8197 {
8198 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8199 struct net_device *dev = info->user_ptr[1];
8200 struct wireless_dev *wdev = dev->ieee80211_ptr;
8201
8202 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8203 return -EINVAL;
8204
8205 if (!rdev->ops->set_cqm_txe_config)
8206 return -EOPNOTSUPP;
8207
8208 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8209 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8210 return -EOPNOTSUPP;
8211
8212 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8213 }
8214
8215 static int nl80211_set_cqm_rssi(struct genl_info *info,
8216 s32 threshold, u32 hysteresis)
8217 {
8218 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8219 struct net_device *dev = info->user_ptr[1];
8220 struct wireless_dev *wdev = dev->ieee80211_ptr;
8221
8222 if (threshold > 0)
8223 return -EINVAL;
8224
8225 /* disabling - hysteresis should also be zero then */
8226 if (threshold == 0)
8227 hysteresis = 0;
8228
8229 if (!rdev->ops->set_cqm_rssi_config)
8230 return -EOPNOTSUPP;
8231
8232 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8233 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8234 return -EOPNOTSUPP;
8235
8236 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8237 }
8238
8239 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8240 {
8241 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8242 struct nlattr *cqm;
8243 int err;
8244
8245 cqm = info->attrs[NL80211_ATTR_CQM];
8246 if (!cqm)
8247 return -EINVAL;
8248
8249 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8250 nl80211_attr_cqm_policy);
8251 if (err)
8252 return err;
8253
8254 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8255 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8256 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8257 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8258
8259 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8260 }
8261
8262 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8263 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8264 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8265 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8266 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8267 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8268
8269 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8270 }
8271
8272 return -EINVAL;
8273 }
8274
8275 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8276 {
8277 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8278 struct net_device *dev = info->user_ptr[1];
8279 struct mesh_config cfg;
8280 struct mesh_setup setup;
8281 int err;
8282
8283 /* start with default */
8284 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8285 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8286
8287 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8288 /* and parse parameters if given */
8289 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8290 if (err)
8291 return err;
8292 }
8293
8294 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8295 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8296 return -EINVAL;
8297
8298 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8299 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8300
8301 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8302 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8303 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8304 return -EINVAL;
8305
8306 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8307 setup.beacon_interval =
8308 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8309 if (setup.beacon_interval < 10 ||
8310 setup.beacon_interval > 10000)
8311 return -EINVAL;
8312 }
8313
8314 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8315 setup.dtim_period =
8316 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8317 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8318 return -EINVAL;
8319 }
8320
8321 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8322 /* parse additional setup parameters if given */
8323 err = nl80211_parse_mesh_setup(info, &setup);
8324 if (err)
8325 return err;
8326 }
8327
8328 if (setup.user_mpm)
8329 cfg.auto_open_plinks = false;
8330
8331 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8332 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8333 if (err)
8334 return err;
8335 } else {
8336 /* cfg80211_join_mesh() will sort it out */
8337 setup.chandef.chan = NULL;
8338 }
8339
8340 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8341 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8342 int n_rates =
8343 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8344 struct ieee80211_supported_band *sband;
8345
8346 if (!setup.chandef.chan)
8347 return -EINVAL;
8348
8349 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8350
8351 err = ieee80211_get_ratemask(sband, rates, n_rates,
8352 &setup.basic_rates);
8353 if (err)
8354 return err;
8355 }
8356
8357 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8358 }
8359
8360 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8361 {
8362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8363 struct net_device *dev = info->user_ptr[1];
8364
8365 return cfg80211_leave_mesh(rdev, dev);
8366 }
8367
8368 #ifdef CONFIG_PM
8369 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8370 struct cfg80211_registered_device *rdev)
8371 {
8372 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8373 struct nlattr *nl_pats, *nl_pat;
8374 int i, pat_len;
8375
8376 if (!wowlan->n_patterns)
8377 return 0;
8378
8379 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8380 if (!nl_pats)
8381 return -ENOBUFS;
8382
8383 for (i = 0; i < wowlan->n_patterns; i++) {
8384 nl_pat = nla_nest_start(msg, i + 1);
8385 if (!nl_pat)
8386 return -ENOBUFS;
8387 pat_len = wowlan->patterns[i].pattern_len;
8388 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8389 wowlan->patterns[i].mask) ||
8390 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8391 wowlan->patterns[i].pattern) ||
8392 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8393 wowlan->patterns[i].pkt_offset))
8394 return -ENOBUFS;
8395 nla_nest_end(msg, nl_pat);
8396 }
8397 nla_nest_end(msg, nl_pats);
8398
8399 return 0;
8400 }
8401
8402 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8403 struct cfg80211_wowlan_tcp *tcp)
8404 {
8405 struct nlattr *nl_tcp;
8406
8407 if (!tcp)
8408 return 0;
8409
8410 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8411 if (!nl_tcp)
8412 return -ENOBUFS;
8413
8414 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8415 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8416 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8417 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8418 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8419 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8420 tcp->payload_len, tcp->payload) ||
8421 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8422 tcp->data_interval) ||
8423 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8424 tcp->wake_len, tcp->wake_data) ||
8425 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8426 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8427 return -ENOBUFS;
8428
8429 if (tcp->payload_seq.len &&
8430 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8431 sizeof(tcp->payload_seq), &tcp->payload_seq))
8432 return -ENOBUFS;
8433
8434 if (tcp->payload_tok.len &&
8435 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8436 sizeof(tcp->payload_tok) + tcp->tokens_size,
8437 &tcp->payload_tok))
8438 return -ENOBUFS;
8439
8440 nla_nest_end(msg, nl_tcp);
8441
8442 return 0;
8443 }
8444
8445 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8446 {
8447 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8448 struct sk_buff *msg;
8449 void *hdr;
8450 u32 size = NLMSG_DEFAULT_SIZE;
8451
8452 if (!rdev->wiphy.wowlan)
8453 return -EOPNOTSUPP;
8454
8455 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8456 /* adjust size to have room for all the data */
8457 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8458 rdev->wiphy.wowlan_config->tcp->payload_len +
8459 rdev->wiphy.wowlan_config->tcp->wake_len +
8460 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8461 }
8462
8463 msg = nlmsg_new(size, GFP_KERNEL);
8464 if (!msg)
8465 return -ENOMEM;
8466
8467 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8468 NL80211_CMD_GET_WOWLAN);
8469 if (!hdr)
8470 goto nla_put_failure;
8471
8472 if (rdev->wiphy.wowlan_config) {
8473 struct nlattr *nl_wowlan;
8474
8475 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8476 if (!nl_wowlan)
8477 goto nla_put_failure;
8478
8479 if ((rdev->wiphy.wowlan_config->any &&
8480 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8481 (rdev->wiphy.wowlan_config->disconnect &&
8482 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8483 (rdev->wiphy.wowlan_config->magic_pkt &&
8484 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8485 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8486 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8487 (rdev->wiphy.wowlan_config->eap_identity_req &&
8488 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8489 (rdev->wiphy.wowlan_config->four_way_handshake &&
8490 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8491 (rdev->wiphy.wowlan_config->rfkill_release &&
8492 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8493 goto nla_put_failure;
8494
8495 if (nl80211_send_wowlan_patterns(msg, rdev))
8496 goto nla_put_failure;
8497
8498 if (nl80211_send_wowlan_tcp(msg,
8499 rdev->wiphy.wowlan_config->tcp))
8500 goto nla_put_failure;
8501
8502 nla_nest_end(msg, nl_wowlan);
8503 }
8504
8505 genlmsg_end(msg, hdr);
8506 return genlmsg_reply(msg, info);
8507
8508 nla_put_failure:
8509 nlmsg_free(msg);
8510 return -ENOBUFS;
8511 }
8512
8513 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8514 struct nlattr *attr,
8515 struct cfg80211_wowlan *trig)
8516 {
8517 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8518 struct cfg80211_wowlan_tcp *cfg;
8519 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8520 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8521 u32 size;
8522 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8523 int err, port;
8524
8525 if (!rdev->wiphy.wowlan->tcp)
8526 return -EINVAL;
8527
8528 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8529 nla_data(attr), nla_len(attr),
8530 nl80211_wowlan_tcp_policy);
8531 if (err)
8532 return err;
8533
8534 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8535 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8536 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8537 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8538 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8539 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8540 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8541 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8542 return -EINVAL;
8543
8544 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8545 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8546 return -EINVAL;
8547
8548 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8549 rdev->wiphy.wowlan->tcp->data_interval_max ||
8550 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8551 return -EINVAL;
8552
8553 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8554 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8555 return -EINVAL;
8556
8557 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8558 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8559 return -EINVAL;
8560
8561 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8562 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8563
8564 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8565 tokens_size = tokln - sizeof(*tok);
8566
8567 if (!tok->len || tokens_size % tok->len)
8568 return -EINVAL;
8569 if (!rdev->wiphy.wowlan->tcp->tok)
8570 return -EINVAL;
8571 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8572 return -EINVAL;
8573 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8574 return -EINVAL;
8575 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8576 return -EINVAL;
8577 if (tok->offset + tok->len > data_size)
8578 return -EINVAL;
8579 }
8580
8581 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8582 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8583 if (!rdev->wiphy.wowlan->tcp->seq)
8584 return -EINVAL;
8585 if (seq->len == 0 || seq->len > 4)
8586 return -EINVAL;
8587 if (seq->len + seq->offset > data_size)
8588 return -EINVAL;
8589 }
8590
8591 size = sizeof(*cfg);
8592 size += data_size;
8593 size += wake_size + wake_mask_size;
8594 size += tokens_size;
8595
8596 cfg = kzalloc(size, GFP_KERNEL);
8597 if (!cfg)
8598 return -ENOMEM;
8599 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8600 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8601 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8602 ETH_ALEN);
8603 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8604 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8605 else
8606 port = 0;
8607 #ifdef CONFIG_INET
8608 /* allocate a socket and port for it and use it */
8609 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8610 IPPROTO_TCP, &cfg->sock, 1);
8611 if (err) {
8612 kfree(cfg);
8613 return err;
8614 }
8615 if (inet_csk_get_port(cfg->sock->sk, port)) {
8616 sock_release(cfg->sock);
8617 kfree(cfg);
8618 return -EADDRINUSE;
8619 }
8620 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8621 #else
8622 if (!port) {
8623 kfree(cfg);
8624 return -EINVAL;
8625 }
8626 cfg->src_port = port;
8627 #endif
8628
8629 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8630 cfg->payload_len = data_size;
8631 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8632 memcpy((void *)cfg->payload,
8633 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8634 data_size);
8635 if (seq)
8636 cfg->payload_seq = *seq;
8637 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8638 cfg->wake_len = wake_size;
8639 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8640 memcpy((void *)cfg->wake_data,
8641 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8642 wake_size);
8643 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8644 data_size + wake_size;
8645 memcpy((void *)cfg->wake_mask,
8646 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8647 wake_mask_size);
8648 if (tok) {
8649 cfg->tokens_size = tokens_size;
8650 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8651 }
8652
8653 trig->tcp = cfg;
8654
8655 return 0;
8656 }
8657
8658 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8659 {
8660 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8661 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8662 struct cfg80211_wowlan new_triggers = {};
8663 struct cfg80211_wowlan *ntrig;
8664 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8665 int err, i;
8666 bool prev_enabled = rdev->wiphy.wowlan_config;
8667
8668 if (!wowlan)
8669 return -EOPNOTSUPP;
8670
8671 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8672 cfg80211_rdev_free_wowlan(rdev);
8673 rdev->wiphy.wowlan_config = NULL;
8674 goto set_wakeup;
8675 }
8676
8677 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8678 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8679 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8680 nl80211_wowlan_policy);
8681 if (err)
8682 return err;
8683
8684 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8685 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8686 return -EINVAL;
8687 new_triggers.any = true;
8688 }
8689
8690 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8691 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8692 return -EINVAL;
8693 new_triggers.disconnect = true;
8694 }
8695
8696 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8697 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8698 return -EINVAL;
8699 new_triggers.magic_pkt = true;
8700 }
8701
8702 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8703 return -EINVAL;
8704
8705 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8706 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8707 return -EINVAL;
8708 new_triggers.gtk_rekey_failure = true;
8709 }
8710
8711 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8712 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8713 return -EINVAL;
8714 new_triggers.eap_identity_req = true;
8715 }
8716
8717 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8718 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8719 return -EINVAL;
8720 new_triggers.four_way_handshake = true;
8721 }
8722
8723 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8724 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8725 return -EINVAL;
8726 new_triggers.rfkill_release = true;
8727 }
8728
8729 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8730 struct nlattr *pat;
8731 int n_patterns = 0;
8732 int rem, pat_len, mask_len, pkt_offset;
8733 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8734
8735 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8736 rem)
8737 n_patterns++;
8738 if (n_patterns > wowlan->n_patterns)
8739 return -EINVAL;
8740
8741 new_triggers.patterns = kcalloc(n_patterns,
8742 sizeof(new_triggers.patterns[0]),
8743 GFP_KERNEL);
8744 if (!new_triggers.patterns)
8745 return -ENOMEM;
8746
8747 new_triggers.n_patterns = n_patterns;
8748 i = 0;
8749
8750 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8751 rem) {
8752 u8 *mask_pat;
8753
8754 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8755 nla_len(pat), NULL);
8756 err = -EINVAL;
8757 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8758 !pat_tb[NL80211_PKTPAT_PATTERN])
8759 goto error;
8760 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8761 mask_len = DIV_ROUND_UP(pat_len, 8);
8762 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8763 goto error;
8764 if (pat_len > wowlan->pattern_max_len ||
8765 pat_len < wowlan->pattern_min_len)
8766 goto error;
8767
8768 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8769 pkt_offset = 0;
8770 else
8771 pkt_offset = nla_get_u32(
8772 pat_tb[NL80211_PKTPAT_OFFSET]);
8773 if (pkt_offset > wowlan->max_pkt_offset)
8774 goto error;
8775 new_triggers.patterns[i].pkt_offset = pkt_offset;
8776
8777 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8778 if (!mask_pat) {
8779 err = -ENOMEM;
8780 goto error;
8781 }
8782 new_triggers.patterns[i].mask = mask_pat;
8783 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8784 mask_len);
8785 mask_pat += mask_len;
8786 new_triggers.patterns[i].pattern = mask_pat;
8787 new_triggers.patterns[i].pattern_len = pat_len;
8788 memcpy(mask_pat,
8789 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8790 pat_len);
8791 i++;
8792 }
8793 }
8794
8795 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8796 err = nl80211_parse_wowlan_tcp(
8797 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8798 &new_triggers);
8799 if (err)
8800 goto error;
8801 }
8802
8803 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8804 if (!ntrig) {
8805 err = -ENOMEM;
8806 goto error;
8807 }
8808 cfg80211_rdev_free_wowlan(rdev);
8809 rdev->wiphy.wowlan_config = ntrig;
8810
8811 set_wakeup:
8812 if (rdev->ops->set_wakeup &&
8813 prev_enabled != !!rdev->wiphy.wowlan_config)
8814 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8815
8816 return 0;
8817 error:
8818 for (i = 0; i < new_triggers.n_patterns; i++)
8819 kfree(new_triggers.patterns[i].mask);
8820 kfree(new_triggers.patterns);
8821 if (new_triggers.tcp && new_triggers.tcp->sock)
8822 sock_release(new_triggers.tcp->sock);
8823 kfree(new_triggers.tcp);
8824 return err;
8825 }
8826 #endif
8827
8828 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8829 struct cfg80211_registered_device *rdev)
8830 {
8831 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8832 int i, j, pat_len;
8833 struct cfg80211_coalesce_rules *rule;
8834
8835 if (!rdev->coalesce->n_rules)
8836 return 0;
8837
8838 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8839 if (!nl_rules)
8840 return -ENOBUFS;
8841
8842 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8843 nl_rule = nla_nest_start(msg, i + 1);
8844 if (!nl_rule)
8845 return -ENOBUFS;
8846
8847 rule = &rdev->coalesce->rules[i];
8848 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8849 rule->delay))
8850 return -ENOBUFS;
8851
8852 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8853 rule->condition))
8854 return -ENOBUFS;
8855
8856 nl_pats = nla_nest_start(msg,
8857 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8858 if (!nl_pats)
8859 return -ENOBUFS;
8860
8861 for (j = 0; j < rule->n_patterns; j++) {
8862 nl_pat = nla_nest_start(msg, j + 1);
8863 if (!nl_pat)
8864 return -ENOBUFS;
8865 pat_len = rule->patterns[j].pattern_len;
8866 if (nla_put(msg, NL80211_PKTPAT_MASK,
8867 DIV_ROUND_UP(pat_len, 8),
8868 rule->patterns[j].mask) ||
8869 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8870 rule->patterns[j].pattern) ||
8871 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8872 rule->patterns[j].pkt_offset))
8873 return -ENOBUFS;
8874 nla_nest_end(msg, nl_pat);
8875 }
8876 nla_nest_end(msg, nl_pats);
8877 nla_nest_end(msg, nl_rule);
8878 }
8879 nla_nest_end(msg, nl_rules);
8880
8881 return 0;
8882 }
8883
8884 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8885 {
8886 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8887 struct sk_buff *msg;
8888 void *hdr;
8889
8890 if (!rdev->wiphy.coalesce)
8891 return -EOPNOTSUPP;
8892
8893 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8894 if (!msg)
8895 return -ENOMEM;
8896
8897 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8898 NL80211_CMD_GET_COALESCE);
8899 if (!hdr)
8900 goto nla_put_failure;
8901
8902 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8903 goto nla_put_failure;
8904
8905 genlmsg_end(msg, hdr);
8906 return genlmsg_reply(msg, info);
8907
8908 nla_put_failure:
8909 nlmsg_free(msg);
8910 return -ENOBUFS;
8911 }
8912
8913 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8914 {
8915 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8916 int i, j;
8917 struct cfg80211_coalesce_rules *rule;
8918
8919 if (!coalesce)
8920 return;
8921
8922 for (i = 0; i < coalesce->n_rules; i++) {
8923 rule = &coalesce->rules[i];
8924 for (j = 0; j < rule->n_patterns; j++)
8925 kfree(rule->patterns[j].mask);
8926 kfree(rule->patterns);
8927 }
8928 kfree(coalesce->rules);
8929 kfree(coalesce);
8930 rdev->coalesce = NULL;
8931 }
8932
8933 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8934 struct nlattr *rule,
8935 struct cfg80211_coalesce_rules *new_rule)
8936 {
8937 int err, i;
8938 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8939 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8940 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8941 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8942
8943 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8944 nla_len(rule), nl80211_coalesce_policy);
8945 if (err)
8946 return err;
8947
8948 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8949 new_rule->delay =
8950 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8951 if (new_rule->delay > coalesce->max_delay)
8952 return -EINVAL;
8953
8954 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8955 new_rule->condition =
8956 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8957 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8958 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8959 return -EINVAL;
8960
8961 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8962 return -EINVAL;
8963
8964 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8965 rem)
8966 n_patterns++;
8967 if (n_patterns > coalesce->n_patterns)
8968 return -EINVAL;
8969
8970 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8971 GFP_KERNEL);
8972 if (!new_rule->patterns)
8973 return -ENOMEM;
8974
8975 new_rule->n_patterns = n_patterns;
8976 i = 0;
8977
8978 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8979 rem) {
8980 u8 *mask_pat;
8981
8982 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8983 nla_len(pat), NULL);
8984 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8985 !pat_tb[NL80211_PKTPAT_PATTERN])
8986 return -EINVAL;
8987 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8988 mask_len = DIV_ROUND_UP(pat_len, 8);
8989 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8990 return -EINVAL;
8991 if (pat_len > coalesce->pattern_max_len ||
8992 pat_len < coalesce->pattern_min_len)
8993 return -EINVAL;
8994
8995 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8996 pkt_offset = 0;
8997 else
8998 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8999 if (pkt_offset > coalesce->max_pkt_offset)
9000 return -EINVAL;
9001 new_rule->patterns[i].pkt_offset = pkt_offset;
9002
9003 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9004 if (!mask_pat)
9005 return -ENOMEM;
9006
9007 new_rule->patterns[i].mask = mask_pat;
9008 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9009 mask_len);
9010
9011 mask_pat += mask_len;
9012 new_rule->patterns[i].pattern = mask_pat;
9013 new_rule->patterns[i].pattern_len = pat_len;
9014 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9015 pat_len);
9016 i++;
9017 }
9018
9019 return 0;
9020 }
9021
9022 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9023 {
9024 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9025 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9026 struct cfg80211_coalesce new_coalesce = {};
9027 struct cfg80211_coalesce *n_coalesce;
9028 int err, rem_rule, n_rules = 0, i, j;
9029 struct nlattr *rule;
9030 struct cfg80211_coalesce_rules *tmp_rule;
9031
9032 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9033 return -EOPNOTSUPP;
9034
9035 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9036 cfg80211_rdev_free_coalesce(rdev);
9037 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9038 return 0;
9039 }
9040
9041 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9042 rem_rule)
9043 n_rules++;
9044 if (n_rules > coalesce->n_rules)
9045 return -EINVAL;
9046
9047 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9048 GFP_KERNEL);
9049 if (!new_coalesce.rules)
9050 return -ENOMEM;
9051
9052 new_coalesce.n_rules = n_rules;
9053 i = 0;
9054
9055 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9056 rem_rule) {
9057 err = nl80211_parse_coalesce_rule(rdev, rule,
9058 &new_coalesce.rules[i]);
9059 if (err)
9060 goto error;
9061
9062 i++;
9063 }
9064
9065 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9066 if (err)
9067 goto error;
9068
9069 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9070 if (!n_coalesce) {
9071 err = -ENOMEM;
9072 goto error;
9073 }
9074 cfg80211_rdev_free_coalesce(rdev);
9075 rdev->coalesce = n_coalesce;
9076
9077 return 0;
9078 error:
9079 for (i = 0; i < new_coalesce.n_rules; i++) {
9080 tmp_rule = &new_coalesce.rules[i];
9081 for (j = 0; j < tmp_rule->n_patterns; j++)
9082 kfree(tmp_rule->patterns[j].mask);
9083 kfree(tmp_rule->patterns);
9084 }
9085 kfree(new_coalesce.rules);
9086
9087 return err;
9088 }
9089
9090 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9091 {
9092 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9093 struct net_device *dev = info->user_ptr[1];
9094 struct wireless_dev *wdev = dev->ieee80211_ptr;
9095 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9096 struct cfg80211_gtk_rekey_data rekey_data;
9097 int err;
9098
9099 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9100 return -EINVAL;
9101
9102 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9103 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9104 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9105 nl80211_rekey_policy);
9106 if (err)
9107 return err;
9108
9109 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9110 return -ERANGE;
9111 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9112 return -ERANGE;
9113 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9114 return -ERANGE;
9115
9116 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9117 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9118 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9119
9120 wdev_lock(wdev);
9121 if (!wdev->current_bss) {
9122 err = -ENOTCONN;
9123 goto out;
9124 }
9125
9126 if (!rdev->ops->set_rekey_data) {
9127 err = -EOPNOTSUPP;
9128 goto out;
9129 }
9130
9131 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9132 out:
9133 wdev_unlock(wdev);
9134 return err;
9135 }
9136
9137 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9138 struct genl_info *info)
9139 {
9140 struct net_device *dev = info->user_ptr[1];
9141 struct wireless_dev *wdev = dev->ieee80211_ptr;
9142
9143 if (wdev->iftype != NL80211_IFTYPE_AP &&
9144 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9145 return -EINVAL;
9146
9147 if (wdev->ap_unexpected_nlportid)
9148 return -EBUSY;
9149
9150 wdev->ap_unexpected_nlportid = info->snd_portid;
9151 return 0;
9152 }
9153
9154 static int nl80211_probe_client(struct sk_buff *skb,
9155 struct genl_info *info)
9156 {
9157 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9158 struct net_device *dev = info->user_ptr[1];
9159 struct wireless_dev *wdev = dev->ieee80211_ptr;
9160 struct sk_buff *msg;
9161 void *hdr;
9162 const u8 *addr;
9163 u64 cookie;
9164 int err;
9165
9166 if (wdev->iftype != NL80211_IFTYPE_AP &&
9167 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9168 return -EOPNOTSUPP;
9169
9170 if (!info->attrs[NL80211_ATTR_MAC])
9171 return -EINVAL;
9172
9173 if (!rdev->ops->probe_client)
9174 return -EOPNOTSUPP;
9175
9176 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9177 if (!msg)
9178 return -ENOMEM;
9179
9180 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9181 NL80211_CMD_PROBE_CLIENT);
9182 if (!hdr) {
9183 err = -ENOBUFS;
9184 goto free_msg;
9185 }
9186
9187 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9188
9189 err = rdev_probe_client(rdev, dev, addr, &cookie);
9190 if (err)
9191 goto free_msg;
9192
9193 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9194 goto nla_put_failure;
9195
9196 genlmsg_end(msg, hdr);
9197
9198 return genlmsg_reply(msg, info);
9199
9200 nla_put_failure:
9201 err = -ENOBUFS;
9202 free_msg:
9203 nlmsg_free(msg);
9204 return err;
9205 }
9206
9207 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9208 {
9209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9210 struct cfg80211_beacon_registration *reg, *nreg;
9211 int rv;
9212
9213 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9214 return -EOPNOTSUPP;
9215
9216 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9217 if (!nreg)
9218 return -ENOMEM;
9219
9220 /* First, check if already registered. */
9221 spin_lock_bh(&rdev->beacon_registrations_lock);
9222 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9223 if (reg->nlportid == info->snd_portid) {
9224 rv = -EALREADY;
9225 goto out_err;
9226 }
9227 }
9228 /* Add it to the list */
9229 nreg->nlportid = info->snd_portid;
9230 list_add(&nreg->list, &rdev->beacon_registrations);
9231
9232 spin_unlock_bh(&rdev->beacon_registrations_lock);
9233
9234 return 0;
9235 out_err:
9236 spin_unlock_bh(&rdev->beacon_registrations_lock);
9237 kfree(nreg);
9238 return rv;
9239 }
9240
9241 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9242 {
9243 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9244 struct wireless_dev *wdev = info->user_ptr[1];
9245 int err;
9246
9247 if (!rdev->ops->start_p2p_device)
9248 return -EOPNOTSUPP;
9249
9250 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9251 return -EOPNOTSUPP;
9252
9253 if (wdev->p2p_started)
9254 return 0;
9255
9256 if (rfkill_blocked(rdev->rfkill))
9257 return -ERFKILL;
9258
9259 err = rdev_start_p2p_device(rdev, wdev);
9260 if (err)
9261 return err;
9262
9263 wdev->p2p_started = true;
9264 rdev->opencount++;
9265
9266 return 0;
9267 }
9268
9269 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9270 {
9271 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9272 struct wireless_dev *wdev = info->user_ptr[1];
9273
9274 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9275 return -EOPNOTSUPP;
9276
9277 if (!rdev->ops->stop_p2p_device)
9278 return -EOPNOTSUPP;
9279
9280 cfg80211_stop_p2p_device(rdev, wdev);
9281
9282 return 0;
9283 }
9284
9285 static int nl80211_get_protocol_features(struct sk_buff *skb,
9286 struct genl_info *info)
9287 {
9288 void *hdr;
9289 struct sk_buff *msg;
9290
9291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9292 if (!msg)
9293 return -ENOMEM;
9294
9295 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9296 NL80211_CMD_GET_PROTOCOL_FEATURES);
9297 if (!hdr)
9298 goto nla_put_failure;
9299
9300 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9301 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9302 goto nla_put_failure;
9303
9304 genlmsg_end(msg, hdr);
9305 return genlmsg_reply(msg, info);
9306
9307 nla_put_failure:
9308 kfree_skb(msg);
9309 return -ENOBUFS;
9310 }
9311
9312 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9313 {
9314 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9315 struct cfg80211_update_ft_ies_params ft_params;
9316 struct net_device *dev = info->user_ptr[1];
9317
9318 if (!rdev->ops->update_ft_ies)
9319 return -EOPNOTSUPP;
9320
9321 if (!info->attrs[NL80211_ATTR_MDID] ||
9322 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9323 return -EINVAL;
9324
9325 memset(&ft_params, 0, sizeof(ft_params));
9326 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9327 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9328 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9329
9330 return rdev_update_ft_ies(rdev, dev, &ft_params);
9331 }
9332
9333 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9334 struct genl_info *info)
9335 {
9336 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9337 struct wireless_dev *wdev = info->user_ptr[1];
9338 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9339 u16 duration;
9340 int ret;
9341
9342 if (!rdev->ops->crit_proto_start)
9343 return -EOPNOTSUPP;
9344
9345 if (WARN_ON(!rdev->ops->crit_proto_stop))
9346 return -EINVAL;
9347
9348 if (rdev->crit_proto_nlportid)
9349 return -EBUSY;
9350
9351 /* determine protocol if provided */
9352 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9353 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9354
9355 if (proto >= NUM_NL80211_CRIT_PROTO)
9356 return -EINVAL;
9357
9358 /* timeout must be provided */
9359 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9360 return -EINVAL;
9361
9362 duration =
9363 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9364
9365 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9366 return -ERANGE;
9367
9368 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9369 if (!ret)
9370 rdev->crit_proto_nlportid = info->snd_portid;
9371
9372 return ret;
9373 }
9374
9375 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9376 struct genl_info *info)
9377 {
9378 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9379 struct wireless_dev *wdev = info->user_ptr[1];
9380
9381 if (!rdev->ops->crit_proto_stop)
9382 return -EOPNOTSUPP;
9383
9384 if (rdev->crit_proto_nlportid) {
9385 rdev->crit_proto_nlportid = 0;
9386 rdev_crit_proto_stop(rdev, wdev);
9387 }
9388 return 0;
9389 }
9390
9391 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9392 {
9393 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9394 struct wireless_dev *wdev =
9395 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9396 int i, err;
9397 u32 vid, subcmd;
9398
9399 if (!rdev->wiphy.vendor_commands)
9400 return -EOPNOTSUPP;
9401
9402 if (IS_ERR(wdev)) {
9403 err = PTR_ERR(wdev);
9404 if (err != -EINVAL)
9405 return err;
9406 wdev = NULL;
9407 } else if (wdev->wiphy != &rdev->wiphy) {
9408 return -EINVAL;
9409 }
9410
9411 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9412 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9413 return -EINVAL;
9414
9415 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9416 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9417 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9418 const struct wiphy_vendor_command *vcmd;
9419 void *data = NULL;
9420 int len = 0;
9421
9422 vcmd = &rdev->wiphy.vendor_commands[i];
9423
9424 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9425 continue;
9426
9427 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9428 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9429 if (!wdev)
9430 return -EINVAL;
9431 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9432 !wdev->netdev)
9433 return -EINVAL;
9434
9435 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9436 if (wdev->netdev &&
9437 !netif_running(wdev->netdev))
9438 return -ENETDOWN;
9439 if (!wdev->netdev && !wdev->p2p_started)
9440 return -ENETDOWN;
9441 }
9442 } else {
9443 wdev = NULL;
9444 }
9445
9446 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9447 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9448 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9449 }
9450
9451 rdev->cur_cmd_info = info;
9452 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9453 data, len);
9454 rdev->cur_cmd_info = NULL;
9455 return err;
9456 }
9457
9458 return -EOPNOTSUPP;
9459 }
9460
9461 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9462 enum nl80211_commands cmd,
9463 enum nl80211_attrs attr,
9464 int approxlen)
9465 {
9466 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9467
9468 if (WARN_ON(!rdev->cur_cmd_info))
9469 return NULL;
9470
9471 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9472 rdev->cur_cmd_info->snd_portid,
9473 rdev->cur_cmd_info->snd_seq,
9474 cmd, attr, NULL, GFP_KERNEL);
9475 }
9476 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9477
9478 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9479 {
9480 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9481 void *hdr = ((void **)skb->cb)[1];
9482 struct nlattr *data = ((void **)skb->cb)[2];
9483
9484 /* clear CB data for netlink core to own from now on */
9485 memset(skb->cb, 0, sizeof(skb->cb));
9486
9487 if (WARN_ON(!rdev->cur_cmd_info)) {
9488 kfree_skb(skb);
9489 return -EINVAL;
9490 }
9491
9492 nla_nest_end(skb, data);
9493 genlmsg_end(skb, hdr);
9494 return genlmsg_reply(skb, rdev->cur_cmd_info);
9495 }
9496 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9497
9498
9499 static int nl80211_set_qos_map(struct sk_buff *skb,
9500 struct genl_info *info)
9501 {
9502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9503 struct cfg80211_qos_map *qos_map = NULL;
9504 struct net_device *dev = info->user_ptr[1];
9505 u8 *pos, len, num_des, des_len, des;
9506 int ret;
9507
9508 if (!rdev->ops->set_qos_map)
9509 return -EOPNOTSUPP;
9510
9511 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9512 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9513 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9514
9515 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9516 len > IEEE80211_QOS_MAP_LEN_MAX)
9517 return -EINVAL;
9518
9519 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9520 if (!qos_map)
9521 return -ENOMEM;
9522
9523 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9524 if (num_des) {
9525 des_len = num_des *
9526 sizeof(struct cfg80211_dscp_exception);
9527 memcpy(qos_map->dscp_exception, pos, des_len);
9528 qos_map->num_des = num_des;
9529 for (des = 0; des < num_des; des++) {
9530 if (qos_map->dscp_exception[des].up > 7) {
9531 kfree(qos_map);
9532 return -EINVAL;
9533 }
9534 }
9535 pos += des_len;
9536 }
9537 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9538 }
9539
9540 wdev_lock(dev->ieee80211_ptr);
9541 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9542 if (!ret)
9543 ret = rdev_set_qos_map(rdev, dev, qos_map);
9544 wdev_unlock(dev->ieee80211_ptr);
9545
9546 kfree(qos_map);
9547 return ret;
9548 }
9549
9550 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9551 {
9552 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9553 struct net_device *dev = info->user_ptr[1];
9554 struct wireless_dev *wdev = dev->ieee80211_ptr;
9555 const u8 *peer;
9556 u8 tsid, up;
9557 u16 admitted_time = 0;
9558 int err;
9559
9560 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_WMM_ADMISSION))
9561 return -EOPNOTSUPP;
9562
9563 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9564 !info->attrs[NL80211_ATTR_USER_PRIO])
9565 return -EINVAL;
9566
9567 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9568 if (tsid >= IEEE80211_NUM_TIDS)
9569 return -EINVAL;
9570
9571 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9572 if (up >= IEEE80211_NUM_UPS)
9573 return -EINVAL;
9574
9575 /* WMM uses TIDs 0-7 even for TSPEC */
9576 if (tsid < IEEE80211_FIRST_TSPEC_TSID) {
9577 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_WMM_ADMISSION))
9578 return -EINVAL;
9579 } else {
9580 /* TODO: handle 802.11 TSPEC/admission control
9581 * need more attributes for that (e.g. BA session requirement)
9582 */
9583 return -EINVAL;
9584 }
9585
9586 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9587
9588 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9589 admitted_time =
9590 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9591 if (!admitted_time)
9592 return -EINVAL;
9593 }
9594
9595 wdev_lock(wdev);
9596 switch (wdev->iftype) {
9597 case NL80211_IFTYPE_STATION:
9598 case NL80211_IFTYPE_P2P_CLIENT:
9599 if (wdev->current_bss)
9600 break;
9601 err = -ENOTCONN;
9602 goto out;
9603 default:
9604 err = -EOPNOTSUPP;
9605 goto out;
9606 }
9607
9608 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9609
9610 out:
9611 wdev_unlock(wdev);
9612 return err;
9613 }
9614
9615 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9616 {
9617 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9618 struct net_device *dev = info->user_ptr[1];
9619 struct wireless_dev *wdev = dev->ieee80211_ptr;
9620 const u8 *peer;
9621 u8 tsid;
9622 int err;
9623
9624 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9625 return -EINVAL;
9626
9627 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9628 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9629
9630 wdev_lock(wdev);
9631 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9632 wdev_unlock(wdev);
9633
9634 return err;
9635 }
9636
9637 #define NL80211_FLAG_NEED_WIPHY 0x01
9638 #define NL80211_FLAG_NEED_NETDEV 0x02
9639 #define NL80211_FLAG_NEED_RTNL 0x04
9640 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9641 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9642 NL80211_FLAG_CHECK_NETDEV_UP)
9643 #define NL80211_FLAG_NEED_WDEV 0x10
9644 /* If a netdev is associated, it must be UP, P2P must be started */
9645 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9646 NL80211_FLAG_CHECK_NETDEV_UP)
9647 #define NL80211_FLAG_CLEAR_SKB 0x20
9648
9649 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9650 struct genl_info *info)
9651 {
9652 struct cfg80211_registered_device *rdev;
9653 struct wireless_dev *wdev;
9654 struct net_device *dev;
9655 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9656
9657 if (rtnl)
9658 rtnl_lock();
9659
9660 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9661 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9662 if (IS_ERR(rdev)) {
9663 if (rtnl)
9664 rtnl_unlock();
9665 return PTR_ERR(rdev);
9666 }
9667 info->user_ptr[0] = rdev;
9668 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9669 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9670 ASSERT_RTNL();
9671
9672 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9673 info->attrs);
9674 if (IS_ERR(wdev)) {
9675 if (rtnl)
9676 rtnl_unlock();
9677 return PTR_ERR(wdev);
9678 }
9679
9680 dev = wdev->netdev;
9681 rdev = wiphy_to_rdev(wdev->wiphy);
9682
9683 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9684 if (!dev) {
9685 if (rtnl)
9686 rtnl_unlock();
9687 return -EINVAL;
9688 }
9689
9690 info->user_ptr[1] = dev;
9691 } else {
9692 info->user_ptr[1] = wdev;
9693 }
9694
9695 if (dev) {
9696 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9697 !netif_running(dev)) {
9698 if (rtnl)
9699 rtnl_unlock();
9700 return -ENETDOWN;
9701 }
9702
9703 dev_hold(dev);
9704 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9705 if (!wdev->p2p_started) {
9706 if (rtnl)
9707 rtnl_unlock();
9708 return -ENETDOWN;
9709 }
9710 }
9711
9712 info->user_ptr[0] = rdev;
9713 }
9714
9715 return 0;
9716 }
9717
9718 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9719 struct genl_info *info)
9720 {
9721 if (info->user_ptr[1]) {
9722 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9723 struct wireless_dev *wdev = info->user_ptr[1];
9724
9725 if (wdev->netdev)
9726 dev_put(wdev->netdev);
9727 } else {
9728 dev_put(info->user_ptr[1]);
9729 }
9730 }
9731
9732 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9733 rtnl_unlock();
9734
9735 /* If needed, clear the netlink message payload from the SKB
9736 * as it might contain key data that shouldn't stick around on
9737 * the heap after the SKB is freed. The netlink message header
9738 * is still needed for further processing, so leave it intact.
9739 */
9740 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
9741 struct nlmsghdr *nlh = nlmsg_hdr(skb);
9742
9743 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
9744 }
9745 }
9746
9747 static const struct genl_ops nl80211_ops[] = {
9748 {
9749 .cmd = NL80211_CMD_GET_WIPHY,
9750 .doit = nl80211_get_wiphy,
9751 .dumpit = nl80211_dump_wiphy,
9752 .done = nl80211_dump_wiphy_done,
9753 .policy = nl80211_policy,
9754 /* can be retrieved by unprivileged users */
9755 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9756 NL80211_FLAG_NEED_RTNL,
9757 },
9758 {
9759 .cmd = NL80211_CMD_SET_WIPHY,
9760 .doit = nl80211_set_wiphy,
9761 .policy = nl80211_policy,
9762 .flags = GENL_ADMIN_PERM,
9763 .internal_flags = NL80211_FLAG_NEED_RTNL,
9764 },
9765 {
9766 .cmd = NL80211_CMD_GET_INTERFACE,
9767 .doit = nl80211_get_interface,
9768 .dumpit = nl80211_dump_interface,
9769 .policy = nl80211_policy,
9770 /* can be retrieved by unprivileged users */
9771 .internal_flags = NL80211_FLAG_NEED_WDEV |
9772 NL80211_FLAG_NEED_RTNL,
9773 },
9774 {
9775 .cmd = NL80211_CMD_SET_INTERFACE,
9776 .doit = nl80211_set_interface,
9777 .policy = nl80211_policy,
9778 .flags = GENL_ADMIN_PERM,
9779 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9780 NL80211_FLAG_NEED_RTNL,
9781 },
9782 {
9783 .cmd = NL80211_CMD_NEW_INTERFACE,
9784 .doit = nl80211_new_interface,
9785 .policy = nl80211_policy,
9786 .flags = GENL_ADMIN_PERM,
9787 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9788 NL80211_FLAG_NEED_RTNL,
9789 },
9790 {
9791 .cmd = NL80211_CMD_DEL_INTERFACE,
9792 .doit = nl80211_del_interface,
9793 .policy = nl80211_policy,
9794 .flags = GENL_ADMIN_PERM,
9795 .internal_flags = NL80211_FLAG_NEED_WDEV |
9796 NL80211_FLAG_NEED_RTNL,
9797 },
9798 {
9799 .cmd = NL80211_CMD_GET_KEY,
9800 .doit = nl80211_get_key,
9801 .policy = nl80211_policy,
9802 .flags = GENL_ADMIN_PERM,
9803 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9804 NL80211_FLAG_NEED_RTNL,
9805 },
9806 {
9807 .cmd = NL80211_CMD_SET_KEY,
9808 .doit = nl80211_set_key,
9809 .policy = nl80211_policy,
9810 .flags = GENL_ADMIN_PERM,
9811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9812 NL80211_FLAG_NEED_RTNL |
9813 NL80211_FLAG_CLEAR_SKB,
9814 },
9815 {
9816 .cmd = NL80211_CMD_NEW_KEY,
9817 .doit = nl80211_new_key,
9818 .policy = nl80211_policy,
9819 .flags = GENL_ADMIN_PERM,
9820 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9821 NL80211_FLAG_NEED_RTNL |
9822 NL80211_FLAG_CLEAR_SKB,
9823 },
9824 {
9825 .cmd = NL80211_CMD_DEL_KEY,
9826 .doit = nl80211_del_key,
9827 .policy = nl80211_policy,
9828 .flags = GENL_ADMIN_PERM,
9829 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9830 NL80211_FLAG_NEED_RTNL,
9831 },
9832 {
9833 .cmd = NL80211_CMD_SET_BEACON,
9834 .policy = nl80211_policy,
9835 .flags = GENL_ADMIN_PERM,
9836 .doit = nl80211_set_beacon,
9837 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9838 NL80211_FLAG_NEED_RTNL,
9839 },
9840 {
9841 .cmd = NL80211_CMD_START_AP,
9842 .policy = nl80211_policy,
9843 .flags = GENL_ADMIN_PERM,
9844 .doit = nl80211_start_ap,
9845 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9846 NL80211_FLAG_NEED_RTNL,
9847 },
9848 {
9849 .cmd = NL80211_CMD_STOP_AP,
9850 .policy = nl80211_policy,
9851 .flags = GENL_ADMIN_PERM,
9852 .doit = nl80211_stop_ap,
9853 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9854 NL80211_FLAG_NEED_RTNL,
9855 },
9856 {
9857 .cmd = NL80211_CMD_GET_STATION,
9858 .doit = nl80211_get_station,
9859 .dumpit = nl80211_dump_station,
9860 .policy = nl80211_policy,
9861 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9862 NL80211_FLAG_NEED_RTNL,
9863 },
9864 {
9865 .cmd = NL80211_CMD_SET_STATION,
9866 .doit = nl80211_set_station,
9867 .policy = nl80211_policy,
9868 .flags = GENL_ADMIN_PERM,
9869 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9870 NL80211_FLAG_NEED_RTNL,
9871 },
9872 {
9873 .cmd = NL80211_CMD_NEW_STATION,
9874 .doit = nl80211_new_station,
9875 .policy = nl80211_policy,
9876 .flags = GENL_ADMIN_PERM,
9877 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9878 NL80211_FLAG_NEED_RTNL,
9879 },
9880 {
9881 .cmd = NL80211_CMD_DEL_STATION,
9882 .doit = nl80211_del_station,
9883 .policy = nl80211_policy,
9884 .flags = GENL_ADMIN_PERM,
9885 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9886 NL80211_FLAG_NEED_RTNL,
9887 },
9888 {
9889 .cmd = NL80211_CMD_GET_MPATH,
9890 .doit = nl80211_get_mpath,
9891 .dumpit = nl80211_dump_mpath,
9892 .policy = nl80211_policy,
9893 .flags = GENL_ADMIN_PERM,
9894 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9895 NL80211_FLAG_NEED_RTNL,
9896 },
9897 {
9898 .cmd = NL80211_CMD_GET_MPP,
9899 .doit = nl80211_get_mpp,
9900 .dumpit = nl80211_dump_mpp,
9901 .policy = nl80211_policy,
9902 .flags = GENL_ADMIN_PERM,
9903 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9904 NL80211_FLAG_NEED_RTNL,
9905 },
9906 {
9907 .cmd = NL80211_CMD_SET_MPATH,
9908 .doit = nl80211_set_mpath,
9909 .policy = nl80211_policy,
9910 .flags = GENL_ADMIN_PERM,
9911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9912 NL80211_FLAG_NEED_RTNL,
9913 },
9914 {
9915 .cmd = NL80211_CMD_NEW_MPATH,
9916 .doit = nl80211_new_mpath,
9917 .policy = nl80211_policy,
9918 .flags = GENL_ADMIN_PERM,
9919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9920 NL80211_FLAG_NEED_RTNL,
9921 },
9922 {
9923 .cmd = NL80211_CMD_DEL_MPATH,
9924 .doit = nl80211_del_mpath,
9925 .policy = nl80211_policy,
9926 .flags = GENL_ADMIN_PERM,
9927 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9928 NL80211_FLAG_NEED_RTNL,
9929 },
9930 {
9931 .cmd = NL80211_CMD_SET_BSS,
9932 .doit = nl80211_set_bss,
9933 .policy = nl80211_policy,
9934 .flags = GENL_ADMIN_PERM,
9935 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9936 NL80211_FLAG_NEED_RTNL,
9937 },
9938 {
9939 .cmd = NL80211_CMD_GET_REG,
9940 .doit = nl80211_get_reg,
9941 .policy = nl80211_policy,
9942 .internal_flags = NL80211_FLAG_NEED_RTNL,
9943 /* can be retrieved by unprivileged users */
9944 },
9945 {
9946 .cmd = NL80211_CMD_SET_REG,
9947 .doit = nl80211_set_reg,
9948 .policy = nl80211_policy,
9949 .flags = GENL_ADMIN_PERM,
9950 .internal_flags = NL80211_FLAG_NEED_RTNL,
9951 },
9952 {
9953 .cmd = NL80211_CMD_REQ_SET_REG,
9954 .doit = nl80211_req_set_reg,
9955 .policy = nl80211_policy,
9956 .flags = GENL_ADMIN_PERM,
9957 },
9958 {
9959 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9960 .doit = nl80211_get_mesh_config,
9961 .policy = nl80211_policy,
9962 /* can be retrieved by unprivileged users */
9963 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9964 NL80211_FLAG_NEED_RTNL,
9965 },
9966 {
9967 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9968 .doit = nl80211_update_mesh_config,
9969 .policy = nl80211_policy,
9970 .flags = GENL_ADMIN_PERM,
9971 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9972 NL80211_FLAG_NEED_RTNL,
9973 },
9974 {
9975 .cmd = NL80211_CMD_TRIGGER_SCAN,
9976 .doit = nl80211_trigger_scan,
9977 .policy = nl80211_policy,
9978 .flags = GENL_ADMIN_PERM,
9979 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9980 NL80211_FLAG_NEED_RTNL,
9981 },
9982 {
9983 .cmd = NL80211_CMD_GET_SCAN,
9984 .policy = nl80211_policy,
9985 .dumpit = nl80211_dump_scan,
9986 },
9987 {
9988 .cmd = NL80211_CMD_START_SCHED_SCAN,
9989 .doit = nl80211_start_sched_scan,
9990 .policy = nl80211_policy,
9991 .flags = GENL_ADMIN_PERM,
9992 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9993 NL80211_FLAG_NEED_RTNL,
9994 },
9995 {
9996 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9997 .doit = nl80211_stop_sched_scan,
9998 .policy = nl80211_policy,
9999 .flags = GENL_ADMIN_PERM,
10000 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10001 NL80211_FLAG_NEED_RTNL,
10002 },
10003 {
10004 .cmd = NL80211_CMD_AUTHENTICATE,
10005 .doit = nl80211_authenticate,
10006 .policy = nl80211_policy,
10007 .flags = GENL_ADMIN_PERM,
10008 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10009 NL80211_FLAG_NEED_RTNL |
10010 NL80211_FLAG_CLEAR_SKB,
10011 },
10012 {
10013 .cmd = NL80211_CMD_ASSOCIATE,
10014 .doit = nl80211_associate,
10015 .policy = nl80211_policy,
10016 .flags = GENL_ADMIN_PERM,
10017 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10018 NL80211_FLAG_NEED_RTNL,
10019 },
10020 {
10021 .cmd = NL80211_CMD_DEAUTHENTICATE,
10022 .doit = nl80211_deauthenticate,
10023 .policy = nl80211_policy,
10024 .flags = GENL_ADMIN_PERM,
10025 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10026 NL80211_FLAG_NEED_RTNL,
10027 },
10028 {
10029 .cmd = NL80211_CMD_DISASSOCIATE,
10030 .doit = nl80211_disassociate,
10031 .policy = nl80211_policy,
10032 .flags = GENL_ADMIN_PERM,
10033 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10034 NL80211_FLAG_NEED_RTNL,
10035 },
10036 {
10037 .cmd = NL80211_CMD_JOIN_IBSS,
10038 .doit = nl80211_join_ibss,
10039 .policy = nl80211_policy,
10040 .flags = GENL_ADMIN_PERM,
10041 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10042 NL80211_FLAG_NEED_RTNL,
10043 },
10044 {
10045 .cmd = NL80211_CMD_LEAVE_IBSS,
10046 .doit = nl80211_leave_ibss,
10047 .policy = nl80211_policy,
10048 .flags = GENL_ADMIN_PERM,
10049 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10050 NL80211_FLAG_NEED_RTNL,
10051 },
10052 #ifdef CONFIG_NL80211_TESTMODE
10053 {
10054 .cmd = NL80211_CMD_TESTMODE,
10055 .doit = nl80211_testmode_do,
10056 .dumpit = nl80211_testmode_dump,
10057 .policy = nl80211_policy,
10058 .flags = GENL_ADMIN_PERM,
10059 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10060 NL80211_FLAG_NEED_RTNL,
10061 },
10062 #endif
10063 {
10064 .cmd = NL80211_CMD_CONNECT,
10065 .doit = nl80211_connect,
10066 .policy = nl80211_policy,
10067 .flags = GENL_ADMIN_PERM,
10068 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10069 NL80211_FLAG_NEED_RTNL,
10070 },
10071 {
10072 .cmd = NL80211_CMD_DISCONNECT,
10073 .doit = nl80211_disconnect,
10074 .policy = nl80211_policy,
10075 .flags = GENL_ADMIN_PERM,
10076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10077 NL80211_FLAG_NEED_RTNL,
10078 },
10079 {
10080 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10081 .doit = nl80211_wiphy_netns,
10082 .policy = nl80211_policy,
10083 .flags = GENL_ADMIN_PERM,
10084 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10085 NL80211_FLAG_NEED_RTNL,
10086 },
10087 {
10088 .cmd = NL80211_CMD_GET_SURVEY,
10089 .policy = nl80211_policy,
10090 .dumpit = nl80211_dump_survey,
10091 },
10092 {
10093 .cmd = NL80211_CMD_SET_PMKSA,
10094 .doit = nl80211_setdel_pmksa,
10095 .policy = nl80211_policy,
10096 .flags = GENL_ADMIN_PERM,
10097 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10098 NL80211_FLAG_NEED_RTNL,
10099 },
10100 {
10101 .cmd = NL80211_CMD_DEL_PMKSA,
10102 .doit = nl80211_setdel_pmksa,
10103 .policy = nl80211_policy,
10104 .flags = GENL_ADMIN_PERM,
10105 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10106 NL80211_FLAG_NEED_RTNL,
10107 },
10108 {
10109 .cmd = NL80211_CMD_FLUSH_PMKSA,
10110 .doit = nl80211_flush_pmksa,
10111 .policy = nl80211_policy,
10112 .flags = GENL_ADMIN_PERM,
10113 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10114 NL80211_FLAG_NEED_RTNL,
10115 },
10116 {
10117 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10118 .doit = nl80211_remain_on_channel,
10119 .policy = nl80211_policy,
10120 .flags = GENL_ADMIN_PERM,
10121 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10122 NL80211_FLAG_NEED_RTNL,
10123 },
10124 {
10125 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10126 .doit = nl80211_cancel_remain_on_channel,
10127 .policy = nl80211_policy,
10128 .flags = GENL_ADMIN_PERM,
10129 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10130 NL80211_FLAG_NEED_RTNL,
10131 },
10132 {
10133 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10134 .doit = nl80211_set_tx_bitrate_mask,
10135 .policy = nl80211_policy,
10136 .flags = GENL_ADMIN_PERM,
10137 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10138 NL80211_FLAG_NEED_RTNL,
10139 },
10140 {
10141 .cmd = NL80211_CMD_REGISTER_FRAME,
10142 .doit = nl80211_register_mgmt,
10143 .policy = nl80211_policy,
10144 .flags = GENL_ADMIN_PERM,
10145 .internal_flags = NL80211_FLAG_NEED_WDEV |
10146 NL80211_FLAG_NEED_RTNL,
10147 },
10148 {
10149 .cmd = NL80211_CMD_FRAME,
10150 .doit = nl80211_tx_mgmt,
10151 .policy = nl80211_policy,
10152 .flags = GENL_ADMIN_PERM,
10153 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10154 NL80211_FLAG_NEED_RTNL,
10155 },
10156 {
10157 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10158 .doit = nl80211_tx_mgmt_cancel_wait,
10159 .policy = nl80211_policy,
10160 .flags = GENL_ADMIN_PERM,
10161 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10162 NL80211_FLAG_NEED_RTNL,
10163 },
10164 {
10165 .cmd = NL80211_CMD_SET_POWER_SAVE,
10166 .doit = nl80211_set_power_save,
10167 .policy = nl80211_policy,
10168 .flags = GENL_ADMIN_PERM,
10169 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10170 NL80211_FLAG_NEED_RTNL,
10171 },
10172 {
10173 .cmd = NL80211_CMD_GET_POWER_SAVE,
10174 .doit = nl80211_get_power_save,
10175 .policy = nl80211_policy,
10176 /* can be retrieved by unprivileged users */
10177 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10178 NL80211_FLAG_NEED_RTNL,
10179 },
10180 {
10181 .cmd = NL80211_CMD_SET_CQM,
10182 .doit = nl80211_set_cqm,
10183 .policy = nl80211_policy,
10184 .flags = GENL_ADMIN_PERM,
10185 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10186 NL80211_FLAG_NEED_RTNL,
10187 },
10188 {
10189 .cmd = NL80211_CMD_SET_CHANNEL,
10190 .doit = nl80211_set_channel,
10191 .policy = nl80211_policy,
10192 .flags = GENL_ADMIN_PERM,
10193 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10194 NL80211_FLAG_NEED_RTNL,
10195 },
10196 {
10197 .cmd = NL80211_CMD_SET_WDS_PEER,
10198 .doit = nl80211_set_wds_peer,
10199 .policy = nl80211_policy,
10200 .flags = GENL_ADMIN_PERM,
10201 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10202 NL80211_FLAG_NEED_RTNL,
10203 },
10204 {
10205 .cmd = NL80211_CMD_JOIN_MESH,
10206 .doit = nl80211_join_mesh,
10207 .policy = nl80211_policy,
10208 .flags = GENL_ADMIN_PERM,
10209 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10210 NL80211_FLAG_NEED_RTNL,
10211 },
10212 {
10213 .cmd = NL80211_CMD_LEAVE_MESH,
10214 .doit = nl80211_leave_mesh,
10215 .policy = nl80211_policy,
10216 .flags = GENL_ADMIN_PERM,
10217 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10218 NL80211_FLAG_NEED_RTNL,
10219 },
10220 #ifdef CONFIG_PM
10221 {
10222 .cmd = NL80211_CMD_GET_WOWLAN,
10223 .doit = nl80211_get_wowlan,
10224 .policy = nl80211_policy,
10225 /* can be retrieved by unprivileged users */
10226 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10227 NL80211_FLAG_NEED_RTNL,
10228 },
10229 {
10230 .cmd = NL80211_CMD_SET_WOWLAN,
10231 .doit = nl80211_set_wowlan,
10232 .policy = nl80211_policy,
10233 .flags = GENL_ADMIN_PERM,
10234 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10235 NL80211_FLAG_NEED_RTNL,
10236 },
10237 #endif
10238 {
10239 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10240 .doit = nl80211_set_rekey_data,
10241 .policy = nl80211_policy,
10242 .flags = GENL_ADMIN_PERM,
10243 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10244 NL80211_FLAG_NEED_RTNL |
10245 NL80211_FLAG_CLEAR_SKB,
10246 },
10247 {
10248 .cmd = NL80211_CMD_TDLS_MGMT,
10249 .doit = nl80211_tdls_mgmt,
10250 .policy = nl80211_policy,
10251 .flags = GENL_ADMIN_PERM,
10252 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10253 NL80211_FLAG_NEED_RTNL,
10254 },
10255 {
10256 .cmd = NL80211_CMD_TDLS_OPER,
10257 .doit = nl80211_tdls_oper,
10258 .policy = nl80211_policy,
10259 .flags = GENL_ADMIN_PERM,
10260 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10261 NL80211_FLAG_NEED_RTNL,
10262 },
10263 {
10264 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10265 .doit = nl80211_register_unexpected_frame,
10266 .policy = nl80211_policy,
10267 .flags = GENL_ADMIN_PERM,
10268 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10269 NL80211_FLAG_NEED_RTNL,
10270 },
10271 {
10272 .cmd = NL80211_CMD_PROBE_CLIENT,
10273 .doit = nl80211_probe_client,
10274 .policy = nl80211_policy,
10275 .flags = GENL_ADMIN_PERM,
10276 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10277 NL80211_FLAG_NEED_RTNL,
10278 },
10279 {
10280 .cmd = NL80211_CMD_REGISTER_BEACONS,
10281 .doit = nl80211_register_beacons,
10282 .policy = nl80211_policy,
10283 .flags = GENL_ADMIN_PERM,
10284 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10285 NL80211_FLAG_NEED_RTNL,
10286 },
10287 {
10288 .cmd = NL80211_CMD_SET_NOACK_MAP,
10289 .doit = nl80211_set_noack_map,
10290 .policy = nl80211_policy,
10291 .flags = GENL_ADMIN_PERM,
10292 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10293 NL80211_FLAG_NEED_RTNL,
10294 },
10295 {
10296 .cmd = NL80211_CMD_START_P2P_DEVICE,
10297 .doit = nl80211_start_p2p_device,
10298 .policy = nl80211_policy,
10299 .flags = GENL_ADMIN_PERM,
10300 .internal_flags = NL80211_FLAG_NEED_WDEV |
10301 NL80211_FLAG_NEED_RTNL,
10302 },
10303 {
10304 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10305 .doit = nl80211_stop_p2p_device,
10306 .policy = nl80211_policy,
10307 .flags = GENL_ADMIN_PERM,
10308 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10309 NL80211_FLAG_NEED_RTNL,
10310 },
10311 {
10312 .cmd = NL80211_CMD_SET_MCAST_RATE,
10313 .doit = nl80211_set_mcast_rate,
10314 .policy = nl80211_policy,
10315 .flags = GENL_ADMIN_PERM,
10316 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10317 NL80211_FLAG_NEED_RTNL,
10318 },
10319 {
10320 .cmd = NL80211_CMD_SET_MAC_ACL,
10321 .doit = nl80211_set_mac_acl,
10322 .policy = nl80211_policy,
10323 .flags = GENL_ADMIN_PERM,
10324 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10325 NL80211_FLAG_NEED_RTNL,
10326 },
10327 {
10328 .cmd = NL80211_CMD_RADAR_DETECT,
10329 .doit = nl80211_start_radar_detection,
10330 .policy = nl80211_policy,
10331 .flags = GENL_ADMIN_PERM,
10332 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10333 NL80211_FLAG_NEED_RTNL,
10334 },
10335 {
10336 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10337 .doit = nl80211_get_protocol_features,
10338 .policy = nl80211_policy,
10339 },
10340 {
10341 .cmd = NL80211_CMD_UPDATE_FT_IES,
10342 .doit = nl80211_update_ft_ies,
10343 .policy = nl80211_policy,
10344 .flags = GENL_ADMIN_PERM,
10345 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10346 NL80211_FLAG_NEED_RTNL,
10347 },
10348 {
10349 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10350 .doit = nl80211_crit_protocol_start,
10351 .policy = nl80211_policy,
10352 .flags = GENL_ADMIN_PERM,
10353 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10354 NL80211_FLAG_NEED_RTNL,
10355 },
10356 {
10357 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10358 .doit = nl80211_crit_protocol_stop,
10359 .policy = nl80211_policy,
10360 .flags = GENL_ADMIN_PERM,
10361 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10362 NL80211_FLAG_NEED_RTNL,
10363 },
10364 {
10365 .cmd = NL80211_CMD_GET_COALESCE,
10366 .doit = nl80211_get_coalesce,
10367 .policy = nl80211_policy,
10368 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10369 NL80211_FLAG_NEED_RTNL,
10370 },
10371 {
10372 .cmd = NL80211_CMD_SET_COALESCE,
10373 .doit = nl80211_set_coalesce,
10374 .policy = nl80211_policy,
10375 .flags = GENL_ADMIN_PERM,
10376 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10377 NL80211_FLAG_NEED_RTNL,
10378 },
10379 {
10380 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10381 .doit = nl80211_channel_switch,
10382 .policy = nl80211_policy,
10383 .flags = GENL_ADMIN_PERM,
10384 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10385 NL80211_FLAG_NEED_RTNL,
10386 },
10387 {
10388 .cmd = NL80211_CMD_VENDOR,
10389 .doit = nl80211_vendor_cmd,
10390 .policy = nl80211_policy,
10391 .flags = GENL_ADMIN_PERM,
10392 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10393 NL80211_FLAG_NEED_RTNL,
10394 },
10395 {
10396 .cmd = NL80211_CMD_SET_QOS_MAP,
10397 .doit = nl80211_set_qos_map,
10398 .policy = nl80211_policy,
10399 .flags = GENL_ADMIN_PERM,
10400 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10401 NL80211_FLAG_NEED_RTNL,
10402 },
10403 {
10404 .cmd = NL80211_CMD_ADD_TX_TS,
10405 .doit = nl80211_add_tx_ts,
10406 .policy = nl80211_policy,
10407 .flags = GENL_ADMIN_PERM,
10408 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10409 NL80211_FLAG_NEED_RTNL,
10410 },
10411 {
10412 .cmd = NL80211_CMD_DEL_TX_TS,
10413 .doit = nl80211_del_tx_ts,
10414 .policy = nl80211_policy,
10415 .flags = GENL_ADMIN_PERM,
10416 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10417 NL80211_FLAG_NEED_RTNL,
10418 },
10419 };
10420
10421 /* notification functions */
10422
10423 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10424 enum nl80211_commands cmd)
10425 {
10426 struct sk_buff *msg;
10427 struct nl80211_dump_wiphy_state state = {};
10428
10429 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10430 cmd != NL80211_CMD_DEL_WIPHY);
10431
10432 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10433 if (!msg)
10434 return;
10435
10436 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10437 nlmsg_free(msg);
10438 return;
10439 }
10440
10441 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10442 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10443 }
10444
10445 static int nl80211_add_scan_req(struct sk_buff *msg,
10446 struct cfg80211_registered_device *rdev)
10447 {
10448 struct cfg80211_scan_request *req = rdev->scan_req;
10449 struct nlattr *nest;
10450 int i;
10451
10452 if (WARN_ON(!req))
10453 return 0;
10454
10455 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10456 if (!nest)
10457 goto nla_put_failure;
10458 for (i = 0; i < req->n_ssids; i++) {
10459 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10460 goto nla_put_failure;
10461 }
10462 nla_nest_end(msg, nest);
10463
10464 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10465 if (!nest)
10466 goto nla_put_failure;
10467 for (i = 0; i < req->n_channels; i++) {
10468 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10469 goto nla_put_failure;
10470 }
10471 nla_nest_end(msg, nest);
10472
10473 if (req->ie &&
10474 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10475 goto nla_put_failure;
10476
10477 if (req->flags &&
10478 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10479 goto nla_put_failure;
10480
10481 return 0;
10482 nla_put_failure:
10483 return -ENOBUFS;
10484 }
10485
10486 static int nl80211_send_scan_msg(struct sk_buff *msg,
10487 struct cfg80211_registered_device *rdev,
10488 struct wireless_dev *wdev,
10489 u32 portid, u32 seq, int flags,
10490 u32 cmd)
10491 {
10492 void *hdr;
10493
10494 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10495 if (!hdr)
10496 return -1;
10497
10498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10499 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10500 wdev->netdev->ifindex)) ||
10501 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10502 goto nla_put_failure;
10503
10504 /* ignore errors and send incomplete event anyway */
10505 nl80211_add_scan_req(msg, rdev);
10506
10507 return genlmsg_end(msg, hdr);
10508
10509 nla_put_failure:
10510 genlmsg_cancel(msg, hdr);
10511 return -EMSGSIZE;
10512 }
10513
10514 static int
10515 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10516 struct cfg80211_registered_device *rdev,
10517 struct net_device *netdev,
10518 u32 portid, u32 seq, int flags, u32 cmd)
10519 {
10520 void *hdr;
10521
10522 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10523 if (!hdr)
10524 return -1;
10525
10526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10527 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10528 goto nla_put_failure;
10529
10530 return genlmsg_end(msg, hdr);
10531
10532 nla_put_failure:
10533 genlmsg_cancel(msg, hdr);
10534 return -EMSGSIZE;
10535 }
10536
10537 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10538 struct wireless_dev *wdev)
10539 {
10540 struct sk_buff *msg;
10541
10542 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10543 if (!msg)
10544 return;
10545
10546 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10547 NL80211_CMD_TRIGGER_SCAN) < 0) {
10548 nlmsg_free(msg);
10549 return;
10550 }
10551
10552 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10553 NL80211_MCGRP_SCAN, GFP_KERNEL);
10554 }
10555
10556 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10557 struct wireless_dev *wdev, bool aborted)
10558 {
10559 struct sk_buff *msg;
10560
10561 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10562 if (!msg)
10563 return NULL;
10564
10565 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10566 aborted ? NL80211_CMD_SCAN_ABORTED :
10567 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10568 nlmsg_free(msg);
10569 return NULL;
10570 }
10571
10572 return msg;
10573 }
10574
10575 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10576 struct sk_buff *msg)
10577 {
10578 if (!msg)
10579 return;
10580
10581 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10582 NL80211_MCGRP_SCAN, GFP_KERNEL);
10583 }
10584
10585 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10586 struct net_device *netdev)
10587 {
10588 struct sk_buff *msg;
10589
10590 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10591 if (!msg)
10592 return;
10593
10594 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10595 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10596 nlmsg_free(msg);
10597 return;
10598 }
10599
10600 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10601 NL80211_MCGRP_SCAN, GFP_KERNEL);
10602 }
10603
10604 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10605 struct net_device *netdev, u32 cmd)
10606 {
10607 struct sk_buff *msg;
10608
10609 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10610 if (!msg)
10611 return;
10612
10613 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10614 nlmsg_free(msg);
10615 return;
10616 }
10617
10618 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10619 NL80211_MCGRP_SCAN, GFP_KERNEL);
10620 }
10621
10622 /*
10623 * This can happen on global regulatory changes or device specific settings
10624 * based on custom world regulatory domains.
10625 */
10626 void nl80211_send_reg_change_event(struct regulatory_request *request)
10627 {
10628 struct sk_buff *msg;
10629 void *hdr;
10630
10631 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10632 if (!msg)
10633 return;
10634
10635 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10636 if (!hdr) {
10637 nlmsg_free(msg);
10638 return;
10639 }
10640
10641 /* Userspace can always count this one always being set */
10642 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10643 goto nla_put_failure;
10644
10645 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10646 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10647 NL80211_REGDOM_TYPE_WORLD))
10648 goto nla_put_failure;
10649 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10650 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10651 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10652 goto nla_put_failure;
10653 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10654 request->intersect) {
10655 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10656 NL80211_REGDOM_TYPE_INTERSECTION))
10657 goto nla_put_failure;
10658 } else {
10659 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10660 NL80211_REGDOM_TYPE_COUNTRY) ||
10661 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10662 request->alpha2))
10663 goto nla_put_failure;
10664 }
10665
10666 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10667 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10668 goto nla_put_failure;
10669
10670 genlmsg_end(msg, hdr);
10671
10672 rcu_read_lock();
10673 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10674 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10675 rcu_read_unlock();
10676
10677 return;
10678
10679 nla_put_failure:
10680 genlmsg_cancel(msg, hdr);
10681 nlmsg_free(msg);
10682 }
10683
10684 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10685 struct net_device *netdev,
10686 const u8 *buf, size_t len,
10687 enum nl80211_commands cmd, gfp_t gfp,
10688 int uapsd_queues)
10689 {
10690 struct sk_buff *msg;
10691 void *hdr;
10692
10693 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10694 if (!msg)
10695 return;
10696
10697 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10698 if (!hdr) {
10699 nlmsg_free(msg);
10700 return;
10701 }
10702
10703 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10704 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10705 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10706 goto nla_put_failure;
10707
10708 if (uapsd_queues >= 0) {
10709 struct nlattr *nla_wmm =
10710 nla_nest_start(msg, NL80211_ATTR_STA_WME);
10711 if (!nla_wmm)
10712 goto nla_put_failure;
10713
10714 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
10715 uapsd_queues))
10716 goto nla_put_failure;
10717
10718 nla_nest_end(msg, nla_wmm);
10719 }
10720
10721 genlmsg_end(msg, hdr);
10722
10723 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10724 NL80211_MCGRP_MLME, gfp);
10725 return;
10726
10727 nla_put_failure:
10728 genlmsg_cancel(msg, hdr);
10729 nlmsg_free(msg);
10730 }
10731
10732 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10733 struct net_device *netdev, const u8 *buf,
10734 size_t len, gfp_t gfp)
10735 {
10736 nl80211_send_mlme_event(rdev, netdev, buf, len,
10737 NL80211_CMD_AUTHENTICATE, gfp, -1);
10738 }
10739
10740 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10741 struct net_device *netdev, const u8 *buf,
10742 size_t len, gfp_t gfp, int uapsd_queues)
10743 {
10744 nl80211_send_mlme_event(rdev, netdev, buf, len,
10745 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
10746 }
10747
10748 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10749 struct net_device *netdev, const u8 *buf,
10750 size_t len, gfp_t gfp)
10751 {
10752 nl80211_send_mlme_event(rdev, netdev, buf, len,
10753 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
10754 }
10755
10756 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10757 struct net_device *netdev, const u8 *buf,
10758 size_t len, gfp_t gfp)
10759 {
10760 nl80211_send_mlme_event(rdev, netdev, buf, len,
10761 NL80211_CMD_DISASSOCIATE, gfp, -1);
10762 }
10763
10764 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10765 size_t len)
10766 {
10767 struct wireless_dev *wdev = dev->ieee80211_ptr;
10768 struct wiphy *wiphy = wdev->wiphy;
10769 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10770 const struct ieee80211_mgmt *mgmt = (void *)buf;
10771 u32 cmd;
10772
10773 if (WARN_ON(len < 2))
10774 return;
10775
10776 if (ieee80211_is_deauth(mgmt->frame_control))
10777 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10778 else
10779 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10780
10781 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10782 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
10783 }
10784 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10785
10786 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10787 struct net_device *netdev, int cmd,
10788 const u8 *addr, gfp_t gfp)
10789 {
10790 struct sk_buff *msg;
10791 void *hdr;
10792
10793 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10794 if (!msg)
10795 return;
10796
10797 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10798 if (!hdr) {
10799 nlmsg_free(msg);
10800 return;
10801 }
10802
10803 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10804 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10805 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10806 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10807 goto nla_put_failure;
10808
10809 genlmsg_end(msg, hdr);
10810
10811 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10812 NL80211_MCGRP_MLME, gfp);
10813 return;
10814
10815 nla_put_failure:
10816 genlmsg_cancel(msg, hdr);
10817 nlmsg_free(msg);
10818 }
10819
10820 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10821 struct net_device *netdev, const u8 *addr,
10822 gfp_t gfp)
10823 {
10824 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10825 addr, gfp);
10826 }
10827
10828 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10829 struct net_device *netdev, const u8 *addr,
10830 gfp_t gfp)
10831 {
10832 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10833 addr, gfp);
10834 }
10835
10836 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10837 struct net_device *netdev, const u8 *bssid,
10838 const u8 *req_ie, size_t req_ie_len,
10839 const u8 *resp_ie, size_t resp_ie_len,
10840 u16 status, gfp_t gfp)
10841 {
10842 struct sk_buff *msg;
10843 void *hdr;
10844
10845 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10846 if (!msg)
10847 return;
10848
10849 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10850 if (!hdr) {
10851 nlmsg_free(msg);
10852 return;
10853 }
10854
10855 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10856 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10857 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10858 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10859 (req_ie &&
10860 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10861 (resp_ie &&
10862 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10863 goto nla_put_failure;
10864
10865 genlmsg_end(msg, hdr);
10866
10867 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10868 NL80211_MCGRP_MLME, gfp);
10869 return;
10870
10871 nla_put_failure:
10872 genlmsg_cancel(msg, hdr);
10873 nlmsg_free(msg);
10874
10875 }
10876
10877 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10878 struct net_device *netdev, const u8 *bssid,
10879 const u8 *req_ie, size_t req_ie_len,
10880 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10881 {
10882 struct sk_buff *msg;
10883 void *hdr;
10884
10885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10886 if (!msg)
10887 return;
10888
10889 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10890 if (!hdr) {
10891 nlmsg_free(msg);
10892 return;
10893 }
10894
10895 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10896 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10897 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10898 (req_ie &&
10899 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10900 (resp_ie &&
10901 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10902 goto nla_put_failure;
10903
10904 genlmsg_end(msg, hdr);
10905
10906 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10907 NL80211_MCGRP_MLME, gfp);
10908 return;
10909
10910 nla_put_failure:
10911 genlmsg_cancel(msg, hdr);
10912 nlmsg_free(msg);
10913
10914 }
10915
10916 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10917 struct net_device *netdev, u16 reason,
10918 const u8 *ie, size_t ie_len, bool from_ap)
10919 {
10920 struct sk_buff *msg;
10921 void *hdr;
10922
10923 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10924 if (!msg)
10925 return;
10926
10927 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10928 if (!hdr) {
10929 nlmsg_free(msg);
10930 return;
10931 }
10932
10933 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10934 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10935 (from_ap && reason &&
10936 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10937 (from_ap &&
10938 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10939 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10940 goto nla_put_failure;
10941
10942 genlmsg_end(msg, hdr);
10943
10944 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10945 NL80211_MCGRP_MLME, GFP_KERNEL);
10946 return;
10947
10948 nla_put_failure:
10949 genlmsg_cancel(msg, hdr);
10950 nlmsg_free(msg);
10951
10952 }
10953
10954 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10955 struct net_device *netdev, const u8 *bssid,
10956 gfp_t gfp)
10957 {
10958 struct sk_buff *msg;
10959 void *hdr;
10960
10961 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10962 if (!msg)
10963 return;
10964
10965 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10966 if (!hdr) {
10967 nlmsg_free(msg);
10968 return;
10969 }
10970
10971 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10972 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10973 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10974 goto nla_put_failure;
10975
10976 genlmsg_end(msg, hdr);
10977
10978 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10979 NL80211_MCGRP_MLME, gfp);
10980 return;
10981
10982 nla_put_failure:
10983 genlmsg_cancel(msg, hdr);
10984 nlmsg_free(msg);
10985 }
10986
10987 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10988 const u8* ie, u8 ie_len, gfp_t gfp)
10989 {
10990 struct wireless_dev *wdev = dev->ieee80211_ptr;
10991 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10992 struct sk_buff *msg;
10993 void *hdr;
10994
10995 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10996 return;
10997
10998 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10999
11000 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11001 if (!msg)
11002 return;
11003
11004 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11005 if (!hdr) {
11006 nlmsg_free(msg);
11007 return;
11008 }
11009
11010 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11011 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11012 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11013 (ie_len && ie &&
11014 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11015 goto nla_put_failure;
11016
11017 genlmsg_end(msg, hdr);
11018
11019 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11020 NL80211_MCGRP_MLME, gfp);
11021 return;
11022
11023 nla_put_failure:
11024 genlmsg_cancel(msg, hdr);
11025 nlmsg_free(msg);
11026 }
11027 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11028
11029 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11030 struct net_device *netdev, const u8 *addr,
11031 enum nl80211_key_type key_type, int key_id,
11032 const u8 *tsc, gfp_t gfp)
11033 {
11034 struct sk_buff *msg;
11035 void *hdr;
11036
11037 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11038 if (!msg)
11039 return;
11040
11041 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11042 if (!hdr) {
11043 nlmsg_free(msg);
11044 return;
11045 }
11046
11047 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11048 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11049 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11050 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11051 (key_id != -1 &&
11052 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11053 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11054 goto nla_put_failure;
11055
11056 genlmsg_end(msg, hdr);
11057
11058 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11059 NL80211_MCGRP_MLME, gfp);
11060 return;
11061
11062 nla_put_failure:
11063 genlmsg_cancel(msg, hdr);
11064 nlmsg_free(msg);
11065 }
11066
11067 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11068 struct ieee80211_channel *channel_before,
11069 struct ieee80211_channel *channel_after)
11070 {
11071 struct sk_buff *msg;
11072 void *hdr;
11073 struct nlattr *nl_freq;
11074
11075 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11076 if (!msg)
11077 return;
11078
11079 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11080 if (!hdr) {
11081 nlmsg_free(msg);
11082 return;
11083 }
11084
11085 /*
11086 * Since we are applying the beacon hint to a wiphy we know its
11087 * wiphy_idx is valid
11088 */
11089 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11090 goto nla_put_failure;
11091
11092 /* Before */
11093 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11094 if (!nl_freq)
11095 goto nla_put_failure;
11096 if (nl80211_msg_put_channel(msg, channel_before, false))
11097 goto nla_put_failure;
11098 nla_nest_end(msg, nl_freq);
11099
11100 /* After */
11101 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11102 if (!nl_freq)
11103 goto nla_put_failure;
11104 if (nl80211_msg_put_channel(msg, channel_after, false))
11105 goto nla_put_failure;
11106 nla_nest_end(msg, nl_freq);
11107
11108 genlmsg_end(msg, hdr);
11109
11110 rcu_read_lock();
11111 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11112 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11113 rcu_read_unlock();
11114
11115 return;
11116
11117 nla_put_failure:
11118 genlmsg_cancel(msg, hdr);
11119 nlmsg_free(msg);
11120 }
11121
11122 static void nl80211_send_remain_on_chan_event(
11123 int cmd, struct cfg80211_registered_device *rdev,
11124 struct wireless_dev *wdev, u64 cookie,
11125 struct ieee80211_channel *chan,
11126 unsigned int duration, gfp_t gfp)
11127 {
11128 struct sk_buff *msg;
11129 void *hdr;
11130
11131 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11132 if (!msg)
11133 return;
11134
11135 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11136 if (!hdr) {
11137 nlmsg_free(msg);
11138 return;
11139 }
11140
11141 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11142 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11143 wdev->netdev->ifindex)) ||
11144 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11145 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11146 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11147 NL80211_CHAN_NO_HT) ||
11148 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11149 goto nla_put_failure;
11150
11151 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11152 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11153 goto nla_put_failure;
11154
11155 genlmsg_end(msg, hdr);
11156
11157 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11158 NL80211_MCGRP_MLME, gfp);
11159 return;
11160
11161 nla_put_failure:
11162 genlmsg_cancel(msg, hdr);
11163 nlmsg_free(msg);
11164 }
11165
11166 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11167 struct ieee80211_channel *chan,
11168 unsigned int duration, gfp_t gfp)
11169 {
11170 struct wiphy *wiphy = wdev->wiphy;
11171 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11172
11173 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11174 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11175 rdev, wdev, cookie, chan,
11176 duration, gfp);
11177 }
11178 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11179
11180 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11181 struct ieee80211_channel *chan,
11182 gfp_t gfp)
11183 {
11184 struct wiphy *wiphy = wdev->wiphy;
11185 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11186
11187 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11188 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11189 rdev, wdev, cookie, chan, 0, gfp);
11190 }
11191 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11192
11193 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11194 struct station_info *sinfo, gfp_t gfp)
11195 {
11196 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11197 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11198 struct sk_buff *msg;
11199
11200 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11201
11202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11203 if (!msg)
11204 return;
11205
11206 if (nl80211_send_station(msg, 0, 0, 0,
11207 rdev, dev, mac_addr, sinfo) < 0) {
11208 nlmsg_free(msg);
11209 return;
11210 }
11211
11212 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11213 NL80211_MCGRP_MLME, gfp);
11214 }
11215 EXPORT_SYMBOL(cfg80211_new_sta);
11216
11217 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11218 {
11219 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11220 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11221 struct sk_buff *msg;
11222 void *hdr;
11223
11224 trace_cfg80211_del_sta(dev, mac_addr);
11225
11226 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11227 if (!msg)
11228 return;
11229
11230 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11231 if (!hdr) {
11232 nlmsg_free(msg);
11233 return;
11234 }
11235
11236 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11237 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11238 goto nla_put_failure;
11239
11240 genlmsg_end(msg, hdr);
11241
11242 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11243 NL80211_MCGRP_MLME, gfp);
11244 return;
11245
11246 nla_put_failure:
11247 genlmsg_cancel(msg, hdr);
11248 nlmsg_free(msg);
11249 }
11250 EXPORT_SYMBOL(cfg80211_del_sta);
11251
11252 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11253 enum nl80211_connect_failed_reason reason,
11254 gfp_t gfp)
11255 {
11256 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11257 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11258 struct sk_buff *msg;
11259 void *hdr;
11260
11261 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11262 if (!msg)
11263 return;
11264
11265 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11266 if (!hdr) {
11267 nlmsg_free(msg);
11268 return;
11269 }
11270
11271 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11272 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11273 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11274 goto nla_put_failure;
11275
11276 genlmsg_end(msg, hdr);
11277
11278 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11279 NL80211_MCGRP_MLME, gfp);
11280 return;
11281
11282 nla_put_failure:
11283 genlmsg_cancel(msg, hdr);
11284 nlmsg_free(msg);
11285 }
11286 EXPORT_SYMBOL(cfg80211_conn_failed);
11287
11288 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11289 const u8 *addr, gfp_t gfp)
11290 {
11291 struct wireless_dev *wdev = dev->ieee80211_ptr;
11292 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11293 struct sk_buff *msg;
11294 void *hdr;
11295 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11296
11297 if (!nlportid)
11298 return false;
11299
11300 msg = nlmsg_new(100, gfp);
11301 if (!msg)
11302 return true;
11303
11304 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11305 if (!hdr) {
11306 nlmsg_free(msg);
11307 return true;
11308 }
11309
11310 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11311 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11312 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11313 goto nla_put_failure;
11314
11315 genlmsg_end(msg, hdr);
11316 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11317 return true;
11318
11319 nla_put_failure:
11320 genlmsg_cancel(msg, hdr);
11321 nlmsg_free(msg);
11322 return true;
11323 }
11324
11325 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11326 const u8 *addr, gfp_t gfp)
11327 {
11328 struct wireless_dev *wdev = dev->ieee80211_ptr;
11329 bool ret;
11330
11331 trace_cfg80211_rx_spurious_frame(dev, addr);
11332
11333 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11334 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11335 trace_cfg80211_return_bool(false);
11336 return false;
11337 }
11338 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11339 addr, gfp);
11340 trace_cfg80211_return_bool(ret);
11341 return ret;
11342 }
11343 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11344
11345 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11346 const u8 *addr, gfp_t gfp)
11347 {
11348 struct wireless_dev *wdev = dev->ieee80211_ptr;
11349 bool ret;
11350
11351 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11352
11353 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11354 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11355 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11356 trace_cfg80211_return_bool(false);
11357 return false;
11358 }
11359 ret = __nl80211_unexpected_frame(dev,
11360 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11361 addr, gfp);
11362 trace_cfg80211_return_bool(ret);
11363 return ret;
11364 }
11365 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11366
11367 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11368 struct wireless_dev *wdev, u32 nlportid,
11369 int freq, int sig_dbm,
11370 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11371 {
11372 struct net_device *netdev = wdev->netdev;
11373 struct sk_buff *msg;
11374 void *hdr;
11375
11376 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11377 if (!msg)
11378 return -ENOMEM;
11379
11380 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11381 if (!hdr) {
11382 nlmsg_free(msg);
11383 return -ENOMEM;
11384 }
11385
11386 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11387 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11388 netdev->ifindex)) ||
11389 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11390 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11391 (sig_dbm &&
11392 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11393 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11394 (flags &&
11395 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11396 goto nla_put_failure;
11397
11398 genlmsg_end(msg, hdr);
11399
11400 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11401
11402 nla_put_failure:
11403 genlmsg_cancel(msg, hdr);
11404 nlmsg_free(msg);
11405 return -ENOBUFS;
11406 }
11407
11408 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11409 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11410 {
11411 struct wiphy *wiphy = wdev->wiphy;
11412 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11413 struct net_device *netdev = wdev->netdev;
11414 struct sk_buff *msg;
11415 void *hdr;
11416
11417 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11418
11419 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11420 if (!msg)
11421 return;
11422
11423 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11424 if (!hdr) {
11425 nlmsg_free(msg);
11426 return;
11427 }
11428
11429 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11430 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11431 netdev->ifindex)) ||
11432 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11433 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11434 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11435 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11436 goto nla_put_failure;
11437
11438 genlmsg_end(msg, hdr);
11439
11440 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11441 NL80211_MCGRP_MLME, gfp);
11442 return;
11443
11444 nla_put_failure:
11445 genlmsg_cancel(msg, hdr);
11446 nlmsg_free(msg);
11447 }
11448 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11449
11450 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11451 enum nl80211_cqm_rssi_threshold_event rssi_event,
11452 gfp_t gfp)
11453 {
11454 struct wireless_dev *wdev = dev->ieee80211_ptr;
11455 struct wiphy *wiphy = wdev->wiphy;
11456 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11457 struct sk_buff *msg;
11458 struct nlattr *pinfoattr;
11459 void *hdr;
11460
11461 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11462
11463 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11464 if (!msg)
11465 return;
11466
11467 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11468 if (!hdr) {
11469 nlmsg_free(msg);
11470 return;
11471 }
11472
11473 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11474 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11475 goto nla_put_failure;
11476
11477 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11478 if (!pinfoattr)
11479 goto nla_put_failure;
11480
11481 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11482 rssi_event))
11483 goto nla_put_failure;
11484
11485 nla_nest_end(msg, pinfoattr);
11486
11487 genlmsg_end(msg, hdr);
11488
11489 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11490 NL80211_MCGRP_MLME, gfp);
11491 return;
11492
11493 nla_put_failure:
11494 genlmsg_cancel(msg, hdr);
11495 nlmsg_free(msg);
11496 }
11497 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11498
11499 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11500 struct net_device *netdev, const u8 *bssid,
11501 const u8 *replay_ctr, gfp_t gfp)
11502 {
11503 struct sk_buff *msg;
11504 struct nlattr *rekey_attr;
11505 void *hdr;
11506
11507 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11508 if (!msg)
11509 return;
11510
11511 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11512 if (!hdr) {
11513 nlmsg_free(msg);
11514 return;
11515 }
11516
11517 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11518 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11519 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11520 goto nla_put_failure;
11521
11522 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11523 if (!rekey_attr)
11524 goto nla_put_failure;
11525
11526 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11527 NL80211_REPLAY_CTR_LEN, replay_ctr))
11528 goto nla_put_failure;
11529
11530 nla_nest_end(msg, rekey_attr);
11531
11532 genlmsg_end(msg, hdr);
11533
11534 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11535 NL80211_MCGRP_MLME, gfp);
11536 return;
11537
11538 nla_put_failure:
11539 genlmsg_cancel(msg, hdr);
11540 nlmsg_free(msg);
11541 }
11542
11543 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11544 const u8 *replay_ctr, gfp_t gfp)
11545 {
11546 struct wireless_dev *wdev = dev->ieee80211_ptr;
11547 struct wiphy *wiphy = wdev->wiphy;
11548 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11549
11550 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11551 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11552 }
11553 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11554
11555 static void
11556 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11557 struct net_device *netdev, int index,
11558 const u8 *bssid, bool preauth, gfp_t gfp)
11559 {
11560 struct sk_buff *msg;
11561 struct nlattr *attr;
11562 void *hdr;
11563
11564 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11565 if (!msg)
11566 return;
11567
11568 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11569 if (!hdr) {
11570 nlmsg_free(msg);
11571 return;
11572 }
11573
11574 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11575 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11576 goto nla_put_failure;
11577
11578 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11579 if (!attr)
11580 goto nla_put_failure;
11581
11582 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11583 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11584 (preauth &&
11585 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11586 goto nla_put_failure;
11587
11588 nla_nest_end(msg, attr);
11589
11590 genlmsg_end(msg, hdr);
11591
11592 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11593 NL80211_MCGRP_MLME, gfp);
11594 return;
11595
11596 nla_put_failure:
11597 genlmsg_cancel(msg, hdr);
11598 nlmsg_free(msg);
11599 }
11600
11601 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11602 const u8 *bssid, bool preauth, gfp_t gfp)
11603 {
11604 struct wireless_dev *wdev = dev->ieee80211_ptr;
11605 struct wiphy *wiphy = wdev->wiphy;
11606 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11607
11608 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11609 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11610 }
11611 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11612
11613 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11614 struct net_device *netdev,
11615 struct cfg80211_chan_def *chandef,
11616 gfp_t gfp)
11617 {
11618 struct sk_buff *msg;
11619 void *hdr;
11620
11621 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11622 if (!msg)
11623 return;
11624
11625 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11626 if (!hdr) {
11627 nlmsg_free(msg);
11628 return;
11629 }
11630
11631 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11632 goto nla_put_failure;
11633
11634 if (nl80211_send_chandef(msg, chandef))
11635 goto nla_put_failure;
11636
11637 genlmsg_end(msg, hdr);
11638
11639 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11640 NL80211_MCGRP_MLME, gfp);
11641 return;
11642
11643 nla_put_failure:
11644 genlmsg_cancel(msg, hdr);
11645 nlmsg_free(msg);
11646 }
11647
11648 void cfg80211_ch_switch_notify(struct net_device *dev,
11649 struct cfg80211_chan_def *chandef)
11650 {
11651 struct wireless_dev *wdev = dev->ieee80211_ptr;
11652 struct wiphy *wiphy = wdev->wiphy;
11653 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11654
11655 ASSERT_WDEV_LOCK(wdev);
11656
11657 trace_cfg80211_ch_switch_notify(dev, chandef);
11658
11659 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11660 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11661 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11662 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11663 return;
11664
11665 wdev->chandef = *chandef;
11666 wdev->preset_chandef = *chandef;
11667 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11668 }
11669 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11670
11671 void cfg80211_cqm_txe_notify(struct net_device *dev,
11672 const u8 *peer, u32 num_packets,
11673 u32 rate, u32 intvl, gfp_t gfp)
11674 {
11675 struct wireless_dev *wdev = dev->ieee80211_ptr;
11676 struct wiphy *wiphy = wdev->wiphy;
11677 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11678 struct sk_buff *msg;
11679 struct nlattr *pinfoattr;
11680 void *hdr;
11681
11682 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11683 if (!msg)
11684 return;
11685
11686 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11687 if (!hdr) {
11688 nlmsg_free(msg);
11689 return;
11690 }
11691
11692 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11693 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11694 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11695 goto nla_put_failure;
11696
11697 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11698 if (!pinfoattr)
11699 goto nla_put_failure;
11700
11701 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11702 goto nla_put_failure;
11703
11704 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11705 goto nla_put_failure;
11706
11707 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11708 goto nla_put_failure;
11709
11710 nla_nest_end(msg, pinfoattr);
11711
11712 genlmsg_end(msg, hdr);
11713
11714 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11715 NL80211_MCGRP_MLME, gfp);
11716 return;
11717
11718 nla_put_failure:
11719 genlmsg_cancel(msg, hdr);
11720 nlmsg_free(msg);
11721 }
11722 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11723
11724 void
11725 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11726 const struct cfg80211_chan_def *chandef,
11727 enum nl80211_radar_event event,
11728 struct net_device *netdev, gfp_t gfp)
11729 {
11730 struct sk_buff *msg;
11731 void *hdr;
11732
11733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11734 if (!msg)
11735 return;
11736
11737 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11738 if (!hdr) {
11739 nlmsg_free(msg);
11740 return;
11741 }
11742
11743 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11744 goto nla_put_failure;
11745
11746 /* NOP and radar events don't need a netdev parameter */
11747 if (netdev) {
11748 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11749
11750 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11751 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11752 goto nla_put_failure;
11753 }
11754
11755 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11756 goto nla_put_failure;
11757
11758 if (nl80211_send_chandef(msg, chandef))
11759 goto nla_put_failure;
11760
11761 genlmsg_end(msg, hdr);
11762
11763 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11764 NL80211_MCGRP_MLME, gfp);
11765 return;
11766
11767 nla_put_failure:
11768 genlmsg_cancel(msg, hdr);
11769 nlmsg_free(msg);
11770 }
11771
11772 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11773 const u8 *peer, u32 num_packets, gfp_t gfp)
11774 {
11775 struct wireless_dev *wdev = dev->ieee80211_ptr;
11776 struct wiphy *wiphy = wdev->wiphy;
11777 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11778 struct sk_buff *msg;
11779 struct nlattr *pinfoattr;
11780 void *hdr;
11781
11782 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11783
11784 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11785 if (!msg)
11786 return;
11787
11788 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11789 if (!hdr) {
11790 nlmsg_free(msg);
11791 return;
11792 }
11793
11794 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11795 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11796 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11797 goto nla_put_failure;
11798
11799 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11800 if (!pinfoattr)
11801 goto nla_put_failure;
11802
11803 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11804 goto nla_put_failure;
11805
11806 nla_nest_end(msg, pinfoattr);
11807
11808 genlmsg_end(msg, hdr);
11809
11810 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11811 NL80211_MCGRP_MLME, gfp);
11812 return;
11813
11814 nla_put_failure:
11815 genlmsg_cancel(msg, hdr);
11816 nlmsg_free(msg);
11817 }
11818 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11819
11820 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11821 u64 cookie, bool acked, gfp_t gfp)
11822 {
11823 struct wireless_dev *wdev = dev->ieee80211_ptr;
11824 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11825 struct sk_buff *msg;
11826 void *hdr;
11827
11828 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11829
11830 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11831
11832 if (!msg)
11833 return;
11834
11835 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11836 if (!hdr) {
11837 nlmsg_free(msg);
11838 return;
11839 }
11840
11841 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11842 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11843 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11844 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11845 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11846 goto nla_put_failure;
11847
11848 genlmsg_end(msg, hdr);
11849
11850 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11851 NL80211_MCGRP_MLME, gfp);
11852 return;
11853
11854 nla_put_failure:
11855 genlmsg_cancel(msg, hdr);
11856 nlmsg_free(msg);
11857 }
11858 EXPORT_SYMBOL(cfg80211_probe_status);
11859
11860 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11861 const u8 *frame, size_t len,
11862 int freq, int sig_dbm)
11863 {
11864 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11865 struct sk_buff *msg;
11866 void *hdr;
11867 struct cfg80211_beacon_registration *reg;
11868
11869 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11870
11871 spin_lock_bh(&rdev->beacon_registrations_lock);
11872 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11873 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11874 if (!msg) {
11875 spin_unlock_bh(&rdev->beacon_registrations_lock);
11876 return;
11877 }
11878
11879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11880 if (!hdr)
11881 goto nla_put_failure;
11882
11883 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11884 (freq &&
11885 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11886 (sig_dbm &&
11887 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11888 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11889 goto nla_put_failure;
11890
11891 genlmsg_end(msg, hdr);
11892
11893 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11894 }
11895 spin_unlock_bh(&rdev->beacon_registrations_lock);
11896 return;
11897
11898 nla_put_failure:
11899 spin_unlock_bh(&rdev->beacon_registrations_lock);
11900 if (hdr)
11901 genlmsg_cancel(msg, hdr);
11902 nlmsg_free(msg);
11903 }
11904 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11905
11906 #ifdef CONFIG_PM
11907 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11908 struct cfg80211_wowlan_wakeup *wakeup,
11909 gfp_t gfp)
11910 {
11911 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11912 struct sk_buff *msg;
11913 void *hdr;
11914 int size = 200;
11915
11916 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11917
11918 if (wakeup)
11919 size += wakeup->packet_present_len;
11920
11921 msg = nlmsg_new(size, gfp);
11922 if (!msg)
11923 return;
11924
11925 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11926 if (!hdr)
11927 goto free_msg;
11928
11929 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11930 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11931 goto free_msg;
11932
11933 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11934 wdev->netdev->ifindex))
11935 goto free_msg;
11936
11937 if (wakeup) {
11938 struct nlattr *reasons;
11939
11940 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11941 if (!reasons)
11942 goto free_msg;
11943
11944 if (wakeup->disconnect &&
11945 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11946 goto free_msg;
11947 if (wakeup->magic_pkt &&
11948 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11949 goto free_msg;
11950 if (wakeup->gtk_rekey_failure &&
11951 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11952 goto free_msg;
11953 if (wakeup->eap_identity_req &&
11954 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11955 goto free_msg;
11956 if (wakeup->four_way_handshake &&
11957 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11958 goto free_msg;
11959 if (wakeup->rfkill_release &&
11960 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11961 goto free_msg;
11962
11963 if (wakeup->pattern_idx >= 0 &&
11964 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11965 wakeup->pattern_idx))
11966 goto free_msg;
11967
11968 if (wakeup->tcp_match &&
11969 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11970 goto free_msg;
11971
11972 if (wakeup->tcp_connlost &&
11973 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11974 goto free_msg;
11975
11976 if (wakeup->tcp_nomoretokens &&
11977 nla_put_flag(msg,
11978 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11979 goto free_msg;
11980
11981 if (wakeup->packet) {
11982 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11983 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11984
11985 if (!wakeup->packet_80211) {
11986 pkt_attr =
11987 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11988 len_attr =
11989 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11990 }
11991
11992 if (wakeup->packet_len &&
11993 nla_put_u32(msg, len_attr, wakeup->packet_len))
11994 goto free_msg;
11995
11996 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11997 wakeup->packet))
11998 goto free_msg;
11999 }
12000
12001 nla_nest_end(msg, reasons);
12002 }
12003
12004 genlmsg_end(msg, hdr);
12005
12006 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12007 NL80211_MCGRP_MLME, gfp);
12008 return;
12009
12010 free_msg:
12011 nlmsg_free(msg);
12012 }
12013 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12014 #endif
12015
12016 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12017 enum nl80211_tdls_operation oper,
12018 u16 reason_code, gfp_t gfp)
12019 {
12020 struct wireless_dev *wdev = dev->ieee80211_ptr;
12021 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12022 struct sk_buff *msg;
12023 void *hdr;
12024
12025 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12026 reason_code);
12027
12028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12029 if (!msg)
12030 return;
12031
12032 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12033 if (!hdr) {
12034 nlmsg_free(msg);
12035 return;
12036 }
12037
12038 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12039 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12040 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12041 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12042 (reason_code > 0 &&
12043 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12044 goto nla_put_failure;
12045
12046 genlmsg_end(msg, hdr);
12047
12048 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12049 NL80211_MCGRP_MLME, gfp);
12050 return;
12051
12052 nla_put_failure:
12053 genlmsg_cancel(msg, hdr);
12054 nlmsg_free(msg);
12055 }
12056 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12057
12058 static int nl80211_netlink_notify(struct notifier_block * nb,
12059 unsigned long state,
12060 void *_notify)
12061 {
12062 struct netlink_notify *notify = _notify;
12063 struct cfg80211_registered_device *rdev;
12064 struct wireless_dev *wdev;
12065 struct cfg80211_beacon_registration *reg, *tmp;
12066
12067 if (state != NETLINK_URELEASE)
12068 return NOTIFY_DONE;
12069
12070 rcu_read_lock();
12071
12072 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12073 bool schedule_destroy_work = false;
12074
12075 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12076 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12077
12078 if (wdev->owner_nlportid == notify->portid)
12079 schedule_destroy_work = true;
12080 }
12081
12082 spin_lock_bh(&rdev->beacon_registrations_lock);
12083 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12084 list) {
12085 if (reg->nlportid == notify->portid) {
12086 list_del(&reg->list);
12087 kfree(reg);
12088 break;
12089 }
12090 }
12091 spin_unlock_bh(&rdev->beacon_registrations_lock);
12092
12093 if (schedule_destroy_work) {
12094 struct cfg80211_iface_destroy *destroy;
12095
12096 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12097 if (destroy) {
12098 destroy->nlportid = notify->portid;
12099 spin_lock(&rdev->destroy_list_lock);
12100 list_add(&destroy->list, &rdev->destroy_list);
12101 spin_unlock(&rdev->destroy_list_lock);
12102 schedule_work(&rdev->destroy_work);
12103 }
12104 }
12105 }
12106
12107 rcu_read_unlock();
12108
12109 return NOTIFY_OK;
12110 }
12111
12112 static struct notifier_block nl80211_netlink_notifier = {
12113 .notifier_call = nl80211_netlink_notify,
12114 };
12115
12116 void cfg80211_ft_event(struct net_device *netdev,
12117 struct cfg80211_ft_event_params *ft_event)
12118 {
12119 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12120 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12121 struct sk_buff *msg;
12122 void *hdr;
12123
12124 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12125
12126 if (!ft_event->target_ap)
12127 return;
12128
12129 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12130 if (!msg)
12131 return;
12132
12133 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12134 if (!hdr)
12135 goto out;
12136
12137 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12138 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12139 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12140 goto out;
12141
12142 if (ft_event->ies &&
12143 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12144 goto out;
12145 if (ft_event->ric_ies &&
12146 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12147 ft_event->ric_ies))
12148 goto out;
12149
12150 genlmsg_end(msg, hdr);
12151
12152 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12153 NL80211_MCGRP_MLME, GFP_KERNEL);
12154 return;
12155 out:
12156 nlmsg_free(msg);
12157 }
12158 EXPORT_SYMBOL(cfg80211_ft_event);
12159
12160 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12161 {
12162 struct cfg80211_registered_device *rdev;
12163 struct sk_buff *msg;
12164 void *hdr;
12165 u32 nlportid;
12166
12167 rdev = wiphy_to_rdev(wdev->wiphy);
12168 if (!rdev->crit_proto_nlportid)
12169 return;
12170
12171 nlportid = rdev->crit_proto_nlportid;
12172 rdev->crit_proto_nlportid = 0;
12173
12174 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12175 if (!msg)
12176 return;
12177
12178 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12179 if (!hdr)
12180 goto nla_put_failure;
12181
12182 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12183 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12184 goto nla_put_failure;
12185
12186 genlmsg_end(msg, hdr);
12187
12188 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12189 return;
12190
12191 nla_put_failure:
12192 if (hdr)
12193 genlmsg_cancel(msg, hdr);
12194 nlmsg_free(msg);
12195
12196 }
12197 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12198
12199 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12200 {
12201 struct wiphy *wiphy = wdev->wiphy;
12202 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12203 struct sk_buff *msg;
12204 void *hdr;
12205
12206 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12207 if (!msg)
12208 return;
12209
12210 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12211 if (!hdr)
12212 goto out;
12213
12214 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12215 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12216 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12217 goto out;
12218
12219 genlmsg_end(msg, hdr);
12220
12221 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12222 NL80211_MCGRP_MLME, GFP_KERNEL);
12223 return;
12224 out:
12225 nlmsg_free(msg);
12226 }
12227
12228 /* initialisation/exit functions */
12229
12230 int nl80211_init(void)
12231 {
12232 int err;
12233
12234 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12235 nl80211_mcgrps);
12236 if (err)
12237 return err;
12238
12239 err = netlink_register_notifier(&nl80211_netlink_notifier);
12240 if (err)
12241 goto err_out;
12242
12243 return 0;
12244 err_out:
12245 genl_unregister_family(&nl80211_fam);
12246 return err;
12247 }
12248
12249 void nl80211_exit(void)
12250 {
12251 netlink_unregister_notifier(&nl80211_netlink_notifier);
12252 genl_unregister_family(&nl80211_fam);
12253 }
Linux kernel - Deliverables
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