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Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[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 = NL80211_MULTICAST_GROUP_CONFIG },
63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_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[NUM_NL80211_ATTR] = {
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_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 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
400 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
401 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
402 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
403 };
404
405 /* policy for the key attributes */
406 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
407 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
408 [NL80211_KEY_IDX] = { .type = NLA_U8 },
409 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
410 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
411 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
412 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
413 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
414 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
415 };
416
417 /* policy for the key default flags */
418 static const struct nla_policy
419 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
420 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
421 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
422 };
423
424 /* policy for WoWLAN attributes */
425 static const struct nla_policy
426 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
427 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
431 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
433 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
435 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
436 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
437 };
438
439 static const struct nla_policy
440 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
441 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
442 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
443 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
444 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
445 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
447 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
448 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
449 },
450 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
451 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
452 },
453 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
454 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
455 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
456 };
457
458 /* policy for coalesce rule attributes */
459 static const struct nla_policy
460 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
461 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
462 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
463 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
464 };
465
466 /* policy for GTK rekey offload attributes */
467 static const struct nla_policy
468 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
469 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
470 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
471 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
472 };
473
474 static const struct nla_policy
475 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
476 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
477 .len = IEEE80211_MAX_SSID_LEN },
478 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
479 };
480
481 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
482 struct netlink_callback *cb,
483 struct cfg80211_registered_device **rdev,
484 struct wireless_dev **wdev)
485 {
486 int err;
487
488 rtnl_lock();
489
490 if (!cb->args[0]) {
491 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
492 nl80211_fam.attrbuf, nl80211_fam.maxattr,
493 nl80211_policy);
494 if (err)
495 goto out_unlock;
496
497 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
498 nl80211_fam.attrbuf);
499 if (IS_ERR(*wdev)) {
500 err = PTR_ERR(*wdev);
501 goto out_unlock;
502 }
503 *rdev = wiphy_to_rdev((*wdev)->wiphy);
504 /* 0 is the first index - add 1 to parse only once */
505 cb->args[0] = (*rdev)->wiphy_idx + 1;
506 cb->args[1] = (*wdev)->identifier;
507 } else {
508 /* subtract the 1 again here */
509 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
510 struct wireless_dev *tmp;
511
512 if (!wiphy) {
513 err = -ENODEV;
514 goto out_unlock;
515 }
516 *rdev = wiphy_to_rdev(wiphy);
517 *wdev = NULL;
518
519 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
520 if (tmp->identifier == cb->args[1]) {
521 *wdev = tmp;
522 break;
523 }
524 }
525
526 if (!*wdev) {
527 err = -ENODEV;
528 goto out_unlock;
529 }
530 }
531
532 return 0;
533 out_unlock:
534 rtnl_unlock();
535 return err;
536 }
537
538 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
539 {
540 rtnl_unlock();
541 }
542
543 /* IE validation */
544 static bool is_valid_ie_attr(const struct nlattr *attr)
545 {
546 const u8 *pos;
547 int len;
548
549 if (!attr)
550 return true;
551
552 pos = nla_data(attr);
553 len = nla_len(attr);
554
555 while (len) {
556 u8 elemlen;
557
558 if (len < 2)
559 return false;
560 len -= 2;
561
562 elemlen = pos[1];
563 if (elemlen > len)
564 return false;
565
566 len -= elemlen;
567 pos += 2 + elemlen;
568 }
569
570 return true;
571 }
572
573 /* message building helper */
574 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
575 int flags, u8 cmd)
576 {
577 /* since there is no private header just add the generic one */
578 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
579 }
580
581 static int nl80211_msg_put_channel(struct sk_buff *msg,
582 struct ieee80211_channel *chan,
583 bool large)
584 {
585 /* Some channels must be completely excluded from the
586 * list to protect old user-space tools from breaking
587 */
588 if (!large && chan->flags &
589 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
590 return 0;
591
592 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
593 chan->center_freq))
594 goto nla_put_failure;
595
596 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
597 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
598 goto nla_put_failure;
599 if (chan->flags & IEEE80211_CHAN_NO_IR) {
600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
601 goto nla_put_failure;
602 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
603 goto nla_put_failure;
604 }
605 if (chan->flags & IEEE80211_CHAN_RADAR) {
606 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
607 goto nla_put_failure;
608 if (large) {
609 u32 time;
610
611 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
612
613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
614 chan->dfs_state))
615 goto nla_put_failure;
616 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
617 time))
618 goto nla_put_failure;
619 if (nla_put_u32(msg,
620 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
621 chan->dfs_cac_ms))
622 goto nla_put_failure;
623 }
624 }
625
626 if (large) {
627 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
644 goto nla_put_failure;
645 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
646 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
647 goto nla_put_failure;
648 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
649 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
650 goto nla_put_failure;
651 }
652
653 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
654 DBM_TO_MBM(chan->max_power)))
655 goto nla_put_failure;
656
657 return 0;
658
659 nla_put_failure:
660 return -ENOBUFS;
661 }
662
663 /* netlink command implementations */
664
665 struct key_parse {
666 struct key_params p;
667 int idx;
668 int type;
669 bool def, defmgmt;
670 bool def_uni, def_multi;
671 };
672
673 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
674 {
675 struct nlattr *tb[NL80211_KEY_MAX + 1];
676 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
677 nl80211_key_policy);
678 if (err)
679 return err;
680
681 k->def = !!tb[NL80211_KEY_DEFAULT];
682 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
683
684 if (k->def) {
685 k->def_uni = true;
686 k->def_multi = true;
687 }
688 if (k->defmgmt)
689 k->def_multi = true;
690
691 if (tb[NL80211_KEY_IDX])
692 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
693
694 if (tb[NL80211_KEY_DATA]) {
695 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
696 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
697 }
698
699 if (tb[NL80211_KEY_SEQ]) {
700 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
701 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
702 }
703
704 if (tb[NL80211_KEY_CIPHER])
705 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
706
707 if (tb[NL80211_KEY_TYPE]) {
708 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
709 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
710 return -EINVAL;
711 }
712
713 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
714 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
715 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
716 tb[NL80211_KEY_DEFAULT_TYPES],
717 nl80211_key_default_policy);
718 if (err)
719 return err;
720
721 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
722 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
723 }
724
725 return 0;
726 }
727
728 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
729 {
730 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
731 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
732 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
733 }
734
735 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
736 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
737 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
738 }
739
740 if (info->attrs[NL80211_ATTR_KEY_IDX])
741 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
742
743 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
744 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
745
746 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
747 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
748
749 if (k->def) {
750 k->def_uni = true;
751 k->def_multi = true;
752 }
753 if (k->defmgmt)
754 k->def_multi = true;
755
756 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
757 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
758 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
759 return -EINVAL;
760 }
761
762 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
763 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
764 int err = nla_parse_nested(
765 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
766 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
767 nl80211_key_default_policy);
768 if (err)
769 return err;
770
771 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
772 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
773 }
774
775 return 0;
776 }
777
778 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
779 {
780 int err;
781
782 memset(k, 0, sizeof(*k));
783 k->idx = -1;
784 k->type = -1;
785
786 if (info->attrs[NL80211_ATTR_KEY])
787 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
788 else
789 err = nl80211_parse_key_old(info, k);
790
791 if (err)
792 return err;
793
794 if (k->def && k->defmgmt)
795 return -EINVAL;
796
797 if (k->defmgmt) {
798 if (k->def_uni || !k->def_multi)
799 return -EINVAL;
800 }
801
802 if (k->idx != -1) {
803 if (k->defmgmt) {
804 if (k->idx < 4 || k->idx > 5)
805 return -EINVAL;
806 } else if (k->def) {
807 if (k->idx < 0 || k->idx > 3)
808 return -EINVAL;
809 } else {
810 if (k->idx < 0 || k->idx > 5)
811 return -EINVAL;
812 }
813 }
814
815 return 0;
816 }
817
818 static struct cfg80211_cached_keys *
819 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
820 struct nlattr *keys, bool *no_ht)
821 {
822 struct key_parse parse;
823 struct nlattr *key;
824 struct cfg80211_cached_keys *result;
825 int rem, err, def = 0;
826
827 result = kzalloc(sizeof(*result), GFP_KERNEL);
828 if (!result)
829 return ERR_PTR(-ENOMEM);
830
831 result->def = -1;
832 result->defmgmt = -1;
833
834 nla_for_each_nested(key, keys, rem) {
835 memset(&parse, 0, sizeof(parse));
836 parse.idx = -1;
837
838 err = nl80211_parse_key_new(key, &parse);
839 if (err)
840 goto error;
841 err = -EINVAL;
842 if (!parse.p.key)
843 goto error;
844 if (parse.idx < 0 || parse.idx > 4)
845 goto error;
846 if (parse.def) {
847 if (def)
848 goto error;
849 def = 1;
850 result->def = parse.idx;
851 if (!parse.def_uni || !parse.def_multi)
852 goto error;
853 } else if (parse.defmgmt)
854 goto error;
855 err = cfg80211_validate_key_settings(rdev, &parse.p,
856 parse.idx, false, NULL);
857 if (err)
858 goto error;
859 result->params[parse.idx].cipher = parse.p.cipher;
860 result->params[parse.idx].key_len = parse.p.key_len;
861 result->params[parse.idx].key = result->data[parse.idx];
862 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
863
864 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
865 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
866 if (no_ht)
867 *no_ht = true;
868 }
869 }
870
871 return result;
872 error:
873 kfree(result);
874 return ERR_PTR(err);
875 }
876
877 static int nl80211_key_allowed(struct wireless_dev *wdev)
878 {
879 ASSERT_WDEV_LOCK(wdev);
880
881 switch (wdev->iftype) {
882 case NL80211_IFTYPE_AP:
883 case NL80211_IFTYPE_AP_VLAN:
884 case NL80211_IFTYPE_P2P_GO:
885 case NL80211_IFTYPE_MESH_POINT:
886 break;
887 case NL80211_IFTYPE_ADHOC:
888 case NL80211_IFTYPE_STATION:
889 case NL80211_IFTYPE_P2P_CLIENT:
890 if (!wdev->current_bss)
891 return -ENOLINK;
892 break;
893 case NL80211_IFTYPE_UNSPECIFIED:
894 case NL80211_IFTYPE_OCB:
895 case NL80211_IFTYPE_MONITOR:
896 case NL80211_IFTYPE_P2P_DEVICE:
897 case NL80211_IFTYPE_WDS:
898 case NUM_NL80211_IFTYPES:
899 return -EINVAL;
900 }
901
902 return 0;
903 }
904
905 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
906 struct nlattr *tb)
907 {
908 struct ieee80211_channel *chan;
909
910 if (tb == NULL)
911 return NULL;
912 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
913 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
914 return NULL;
915 return chan;
916 }
917
918 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
919 {
920 struct nlattr *nl_modes = nla_nest_start(msg, attr);
921 int i;
922
923 if (!nl_modes)
924 goto nla_put_failure;
925
926 i = 0;
927 while (ifmodes) {
928 if ((ifmodes & 1) && nla_put_flag(msg, i))
929 goto nla_put_failure;
930 ifmodes >>= 1;
931 i++;
932 }
933
934 nla_nest_end(msg, nl_modes);
935 return 0;
936
937 nla_put_failure:
938 return -ENOBUFS;
939 }
940
941 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
942 struct sk_buff *msg,
943 bool large)
944 {
945 struct nlattr *nl_combis;
946 int i, j;
947
948 nl_combis = nla_nest_start(msg,
949 NL80211_ATTR_INTERFACE_COMBINATIONS);
950 if (!nl_combis)
951 goto nla_put_failure;
952
953 for (i = 0; i < wiphy->n_iface_combinations; i++) {
954 const struct ieee80211_iface_combination *c;
955 struct nlattr *nl_combi, *nl_limits;
956
957 c = &wiphy->iface_combinations[i];
958
959 nl_combi = nla_nest_start(msg, i + 1);
960 if (!nl_combi)
961 goto nla_put_failure;
962
963 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
964 if (!nl_limits)
965 goto nla_put_failure;
966
967 for (j = 0; j < c->n_limits; j++) {
968 struct nlattr *nl_limit;
969
970 nl_limit = nla_nest_start(msg, j + 1);
971 if (!nl_limit)
972 goto nla_put_failure;
973 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
974 c->limits[j].max))
975 goto nla_put_failure;
976 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
977 c->limits[j].types))
978 goto nla_put_failure;
979 nla_nest_end(msg, nl_limit);
980 }
981
982 nla_nest_end(msg, nl_limits);
983
984 if (c->beacon_int_infra_match &&
985 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
986 goto nla_put_failure;
987 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
988 c->num_different_channels) ||
989 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
990 c->max_interfaces))
991 goto nla_put_failure;
992 if (large &&
993 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
994 c->radar_detect_widths) ||
995 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
996 c->radar_detect_regions)))
997 goto nla_put_failure;
998
999 nla_nest_end(msg, nl_combi);
1000 }
1001
1002 nla_nest_end(msg, nl_combis);
1003
1004 return 0;
1005 nla_put_failure:
1006 return -ENOBUFS;
1007 }
1008
1009 #ifdef CONFIG_PM
1010 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1011 struct sk_buff *msg)
1012 {
1013 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1014 struct nlattr *nl_tcp;
1015
1016 if (!tcp)
1017 return 0;
1018
1019 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1020 if (!nl_tcp)
1021 return -ENOBUFS;
1022
1023 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1024 tcp->data_payload_max))
1025 return -ENOBUFS;
1026
1027 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1028 tcp->data_payload_max))
1029 return -ENOBUFS;
1030
1031 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1032 return -ENOBUFS;
1033
1034 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1035 sizeof(*tcp->tok), tcp->tok))
1036 return -ENOBUFS;
1037
1038 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1039 tcp->data_interval_max))
1040 return -ENOBUFS;
1041
1042 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1043 tcp->wake_payload_max))
1044 return -ENOBUFS;
1045
1046 nla_nest_end(msg, nl_tcp);
1047 return 0;
1048 }
1049
1050 static int nl80211_send_wowlan(struct sk_buff *msg,
1051 struct cfg80211_registered_device *rdev,
1052 bool large)
1053 {
1054 struct nlattr *nl_wowlan;
1055
1056 if (!rdev->wiphy.wowlan)
1057 return 0;
1058
1059 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1060 if (!nl_wowlan)
1061 return -ENOBUFS;
1062
1063 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1064 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1065 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1067 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1068 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1069 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1070 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1071 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1073 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1075 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1076 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1077 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1079 return -ENOBUFS;
1080
1081 if (rdev->wiphy.wowlan->n_patterns) {
1082 struct nl80211_pattern_support pat = {
1083 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1084 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1085 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1086 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1087 };
1088
1089 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1090 sizeof(pat), &pat))
1091 return -ENOBUFS;
1092 }
1093
1094 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1095 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1096 rdev->wiphy.wowlan->max_nd_match_sets))
1097 return -ENOBUFS;
1098
1099 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1100 return -ENOBUFS;
1101
1102 nla_nest_end(msg, nl_wowlan);
1103
1104 return 0;
1105 }
1106 #endif
1107
1108 static int nl80211_send_coalesce(struct sk_buff *msg,
1109 struct cfg80211_registered_device *rdev)
1110 {
1111 struct nl80211_coalesce_rule_support rule;
1112
1113 if (!rdev->wiphy.coalesce)
1114 return 0;
1115
1116 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1117 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1118 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1119 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1120 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1121 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1122
1123 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1124 return -ENOBUFS;
1125
1126 return 0;
1127 }
1128
1129 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1130 struct ieee80211_supported_band *sband)
1131 {
1132 struct nlattr *nl_rates, *nl_rate;
1133 struct ieee80211_rate *rate;
1134 int i;
1135
1136 /* add HT info */
1137 if (sband->ht_cap.ht_supported &&
1138 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1139 sizeof(sband->ht_cap.mcs),
1140 &sband->ht_cap.mcs) ||
1141 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1142 sband->ht_cap.cap) ||
1143 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1144 sband->ht_cap.ampdu_factor) ||
1145 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1146 sband->ht_cap.ampdu_density)))
1147 return -ENOBUFS;
1148
1149 /* add VHT info */
1150 if (sband->vht_cap.vht_supported &&
1151 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1152 sizeof(sband->vht_cap.vht_mcs),
1153 &sband->vht_cap.vht_mcs) ||
1154 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1155 sband->vht_cap.cap)))
1156 return -ENOBUFS;
1157
1158 /* add bitrates */
1159 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1160 if (!nl_rates)
1161 return -ENOBUFS;
1162
1163 for (i = 0; i < sband->n_bitrates; i++) {
1164 nl_rate = nla_nest_start(msg, i);
1165 if (!nl_rate)
1166 return -ENOBUFS;
1167
1168 rate = &sband->bitrates[i];
1169 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1170 rate->bitrate))
1171 return -ENOBUFS;
1172 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1173 nla_put_flag(msg,
1174 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1175 return -ENOBUFS;
1176
1177 nla_nest_end(msg, nl_rate);
1178 }
1179
1180 nla_nest_end(msg, nl_rates);
1181
1182 return 0;
1183 }
1184
1185 static int
1186 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1187 const struct ieee80211_txrx_stypes *mgmt_stypes)
1188 {
1189 u16 stypes;
1190 struct nlattr *nl_ftypes, *nl_ifs;
1191 enum nl80211_iftype ift;
1192 int i;
1193
1194 if (!mgmt_stypes)
1195 return 0;
1196
1197 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1198 if (!nl_ifs)
1199 return -ENOBUFS;
1200
1201 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1202 nl_ftypes = nla_nest_start(msg, ift);
1203 if (!nl_ftypes)
1204 return -ENOBUFS;
1205 i = 0;
1206 stypes = mgmt_stypes[ift].tx;
1207 while (stypes) {
1208 if ((stypes & 1) &&
1209 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1210 (i << 4) | IEEE80211_FTYPE_MGMT))
1211 return -ENOBUFS;
1212 stypes >>= 1;
1213 i++;
1214 }
1215 nla_nest_end(msg, nl_ftypes);
1216 }
1217
1218 nla_nest_end(msg, nl_ifs);
1219
1220 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1221 if (!nl_ifs)
1222 return -ENOBUFS;
1223
1224 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1225 nl_ftypes = nla_nest_start(msg, ift);
1226 if (!nl_ftypes)
1227 return -ENOBUFS;
1228 i = 0;
1229 stypes = mgmt_stypes[ift].rx;
1230 while (stypes) {
1231 if ((stypes & 1) &&
1232 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1233 (i << 4) | IEEE80211_FTYPE_MGMT))
1234 return -ENOBUFS;
1235 stypes >>= 1;
1236 i++;
1237 }
1238 nla_nest_end(msg, nl_ftypes);
1239 }
1240 nla_nest_end(msg, nl_ifs);
1241
1242 return 0;
1243 }
1244
1245 struct nl80211_dump_wiphy_state {
1246 s64 filter_wiphy;
1247 long start;
1248 long split_start, band_start, chan_start;
1249 bool split;
1250 };
1251
1252 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1253 enum nl80211_commands cmd,
1254 struct sk_buff *msg, u32 portid, u32 seq,
1255 int flags, struct nl80211_dump_wiphy_state *state)
1256 {
1257 void *hdr;
1258 struct nlattr *nl_bands, *nl_band;
1259 struct nlattr *nl_freqs, *nl_freq;
1260 struct nlattr *nl_cmds;
1261 enum ieee80211_band band;
1262 struct ieee80211_channel *chan;
1263 int i;
1264 const struct ieee80211_txrx_stypes *mgmt_stypes =
1265 rdev->wiphy.mgmt_stypes;
1266 u32 features;
1267
1268 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1269 if (!hdr)
1270 return -ENOBUFS;
1271
1272 if (WARN_ON(!state))
1273 return -EINVAL;
1274
1275 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1276 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1277 wiphy_name(&rdev->wiphy)) ||
1278 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1279 cfg80211_rdev_list_generation))
1280 goto nla_put_failure;
1281
1282 if (cmd != NL80211_CMD_NEW_WIPHY)
1283 goto finish;
1284
1285 switch (state->split_start) {
1286 case 0:
1287 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1288 rdev->wiphy.retry_short) ||
1289 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1290 rdev->wiphy.retry_long) ||
1291 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1292 rdev->wiphy.frag_threshold) ||
1293 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1294 rdev->wiphy.rts_threshold) ||
1295 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1296 rdev->wiphy.coverage_class) ||
1297 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1298 rdev->wiphy.max_scan_ssids) ||
1299 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1300 rdev->wiphy.max_sched_scan_ssids) ||
1301 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1302 rdev->wiphy.max_scan_ie_len) ||
1303 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1304 rdev->wiphy.max_sched_scan_ie_len) ||
1305 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1306 rdev->wiphy.max_match_sets))
1307 goto nla_put_failure;
1308
1309 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1310 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1311 goto nla_put_failure;
1312 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1313 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1314 goto nla_put_failure;
1315 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1316 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1317 goto nla_put_failure;
1318 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1319 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1320 goto nla_put_failure;
1321 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1322 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1323 goto nla_put_failure;
1324 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1325 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1326 goto nla_put_failure;
1327 state->split_start++;
1328 if (state->split)
1329 break;
1330 case 1:
1331 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1332 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1333 rdev->wiphy.cipher_suites))
1334 goto nla_put_failure;
1335
1336 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1337 rdev->wiphy.max_num_pmkids))
1338 goto nla_put_failure;
1339
1340 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1341 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1342 goto nla_put_failure;
1343
1344 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1345 rdev->wiphy.available_antennas_tx) ||
1346 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1347 rdev->wiphy.available_antennas_rx))
1348 goto nla_put_failure;
1349
1350 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1351 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1352 rdev->wiphy.probe_resp_offload))
1353 goto nla_put_failure;
1354
1355 if ((rdev->wiphy.available_antennas_tx ||
1356 rdev->wiphy.available_antennas_rx) &&
1357 rdev->ops->get_antenna) {
1358 u32 tx_ant = 0, rx_ant = 0;
1359 int res;
1360 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1361 if (!res) {
1362 if (nla_put_u32(msg,
1363 NL80211_ATTR_WIPHY_ANTENNA_TX,
1364 tx_ant) ||
1365 nla_put_u32(msg,
1366 NL80211_ATTR_WIPHY_ANTENNA_RX,
1367 rx_ant))
1368 goto nla_put_failure;
1369 }
1370 }
1371
1372 state->split_start++;
1373 if (state->split)
1374 break;
1375 case 2:
1376 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1377 rdev->wiphy.interface_modes))
1378 goto nla_put_failure;
1379 state->split_start++;
1380 if (state->split)
1381 break;
1382 case 3:
1383 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1384 if (!nl_bands)
1385 goto nla_put_failure;
1386
1387 for (band = state->band_start;
1388 band < IEEE80211_NUM_BANDS; band++) {
1389 struct ieee80211_supported_band *sband;
1390
1391 sband = rdev->wiphy.bands[band];
1392
1393 if (!sband)
1394 continue;
1395
1396 nl_band = nla_nest_start(msg, band);
1397 if (!nl_band)
1398 goto nla_put_failure;
1399
1400 switch (state->chan_start) {
1401 case 0:
1402 if (nl80211_send_band_rateinfo(msg, sband))
1403 goto nla_put_failure;
1404 state->chan_start++;
1405 if (state->split)
1406 break;
1407 default:
1408 /* add frequencies */
1409 nl_freqs = nla_nest_start(
1410 msg, NL80211_BAND_ATTR_FREQS);
1411 if (!nl_freqs)
1412 goto nla_put_failure;
1413
1414 for (i = state->chan_start - 1;
1415 i < sband->n_channels;
1416 i++) {
1417 nl_freq = nla_nest_start(msg, i);
1418 if (!nl_freq)
1419 goto nla_put_failure;
1420
1421 chan = &sband->channels[i];
1422
1423 if (nl80211_msg_put_channel(
1424 msg, chan,
1425 state->split))
1426 goto nla_put_failure;
1427
1428 nla_nest_end(msg, nl_freq);
1429 if (state->split)
1430 break;
1431 }
1432 if (i < sband->n_channels)
1433 state->chan_start = i + 2;
1434 else
1435 state->chan_start = 0;
1436 nla_nest_end(msg, nl_freqs);
1437 }
1438
1439 nla_nest_end(msg, nl_band);
1440
1441 if (state->split) {
1442 /* start again here */
1443 if (state->chan_start)
1444 band--;
1445 break;
1446 }
1447 }
1448 nla_nest_end(msg, nl_bands);
1449
1450 if (band < IEEE80211_NUM_BANDS)
1451 state->band_start = band + 1;
1452 else
1453 state->band_start = 0;
1454
1455 /* if bands & channels are done, continue outside */
1456 if (state->band_start == 0 && state->chan_start == 0)
1457 state->split_start++;
1458 if (state->split)
1459 break;
1460 case 4:
1461 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1462 if (!nl_cmds)
1463 goto nla_put_failure;
1464
1465 i = 0;
1466 #define CMD(op, n) \
1467 do { \
1468 if (rdev->ops->op) { \
1469 i++; \
1470 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1471 goto nla_put_failure; \
1472 } \
1473 } while (0)
1474
1475 CMD(add_virtual_intf, NEW_INTERFACE);
1476 CMD(change_virtual_intf, SET_INTERFACE);
1477 CMD(add_key, NEW_KEY);
1478 CMD(start_ap, START_AP);
1479 CMD(add_station, NEW_STATION);
1480 CMD(add_mpath, NEW_MPATH);
1481 CMD(update_mesh_config, SET_MESH_CONFIG);
1482 CMD(change_bss, SET_BSS);
1483 CMD(auth, AUTHENTICATE);
1484 CMD(assoc, ASSOCIATE);
1485 CMD(deauth, DEAUTHENTICATE);
1486 CMD(disassoc, DISASSOCIATE);
1487 CMD(join_ibss, JOIN_IBSS);
1488 CMD(join_mesh, JOIN_MESH);
1489 CMD(set_pmksa, SET_PMKSA);
1490 CMD(del_pmksa, DEL_PMKSA);
1491 CMD(flush_pmksa, FLUSH_PMKSA);
1492 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1493 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1494 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1495 CMD(mgmt_tx, FRAME);
1496 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1497 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1498 i++;
1499 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1500 goto nla_put_failure;
1501 }
1502 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1503 rdev->ops->join_mesh) {
1504 i++;
1505 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1506 goto nla_put_failure;
1507 }
1508 CMD(set_wds_peer, SET_WDS_PEER);
1509 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1510 CMD(tdls_mgmt, TDLS_MGMT);
1511 CMD(tdls_oper, TDLS_OPER);
1512 }
1513 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1514 CMD(sched_scan_start, START_SCHED_SCAN);
1515 CMD(probe_client, PROBE_CLIENT);
1516 CMD(set_noack_map, SET_NOACK_MAP);
1517 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1518 i++;
1519 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1520 goto nla_put_failure;
1521 }
1522 CMD(start_p2p_device, START_P2P_DEVICE);
1523 CMD(set_mcast_rate, SET_MCAST_RATE);
1524 #ifdef CONFIG_NL80211_TESTMODE
1525 CMD(testmode_cmd, TESTMODE);
1526 #endif
1527 if (state->split) {
1528 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1529 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1530 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1531 CMD(channel_switch, CHANNEL_SWITCH);
1532 CMD(set_qos_map, SET_QOS_MAP);
1533 if (rdev->wiphy.features &
1534 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1535 CMD(add_tx_ts, ADD_TX_TS);
1536 }
1537 /* add into the if now */
1538 #undef CMD
1539
1540 if (rdev->ops->connect || rdev->ops->auth) {
1541 i++;
1542 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1543 goto nla_put_failure;
1544 }
1545
1546 if (rdev->ops->disconnect || rdev->ops->deauth) {
1547 i++;
1548 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1549 goto nla_put_failure;
1550 }
1551
1552 nla_nest_end(msg, nl_cmds);
1553 state->split_start++;
1554 if (state->split)
1555 break;
1556 case 5:
1557 if (rdev->ops->remain_on_channel &&
1558 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1559 nla_put_u32(msg,
1560 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1561 rdev->wiphy.max_remain_on_channel_duration))
1562 goto nla_put_failure;
1563
1564 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1565 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1566 goto nla_put_failure;
1567
1568 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1569 goto nla_put_failure;
1570 state->split_start++;
1571 if (state->split)
1572 break;
1573 case 6:
1574 #ifdef CONFIG_PM
1575 if (nl80211_send_wowlan(msg, rdev, state->split))
1576 goto nla_put_failure;
1577 state->split_start++;
1578 if (state->split)
1579 break;
1580 #else
1581 state->split_start++;
1582 #endif
1583 case 7:
1584 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1585 rdev->wiphy.software_iftypes))
1586 goto nla_put_failure;
1587
1588 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1589 state->split))
1590 goto nla_put_failure;
1591
1592 state->split_start++;
1593 if (state->split)
1594 break;
1595 case 8:
1596 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1597 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1598 rdev->wiphy.ap_sme_capa))
1599 goto nla_put_failure;
1600
1601 features = rdev->wiphy.features;
1602 /*
1603 * We can only add the per-channel limit information if the
1604 * dump is split, otherwise it makes it too big. Therefore
1605 * only advertise it in that case.
1606 */
1607 if (state->split)
1608 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1609 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1610 goto nla_put_failure;
1611
1612 if (rdev->wiphy.ht_capa_mod_mask &&
1613 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1614 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1615 rdev->wiphy.ht_capa_mod_mask))
1616 goto nla_put_failure;
1617
1618 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1619 rdev->wiphy.max_acl_mac_addrs &&
1620 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1621 rdev->wiphy.max_acl_mac_addrs))
1622 goto nla_put_failure;
1623
1624 /*
1625 * Any information below this point is only available to
1626 * applications that can deal with it being split. This
1627 * helps ensure that newly added capabilities don't break
1628 * older tools by overrunning their buffers.
1629 *
1630 * We still increment split_start so that in the split
1631 * case we'll continue with more data in the next round,
1632 * but break unconditionally so unsplit data stops here.
1633 */
1634 state->split_start++;
1635 break;
1636 case 9:
1637 if (rdev->wiphy.extended_capabilities &&
1638 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1639 rdev->wiphy.extended_capabilities_len,
1640 rdev->wiphy.extended_capabilities) ||
1641 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1642 rdev->wiphy.extended_capabilities_len,
1643 rdev->wiphy.extended_capabilities_mask)))
1644 goto nla_put_failure;
1645
1646 if (rdev->wiphy.vht_capa_mod_mask &&
1647 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1648 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1649 rdev->wiphy.vht_capa_mod_mask))
1650 goto nla_put_failure;
1651
1652 state->split_start++;
1653 break;
1654 case 10:
1655 if (nl80211_send_coalesce(msg, rdev))
1656 goto nla_put_failure;
1657
1658 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1659 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1660 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1661 goto nla_put_failure;
1662
1663 if (rdev->wiphy.max_ap_assoc_sta &&
1664 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1665 rdev->wiphy.max_ap_assoc_sta))
1666 goto nla_put_failure;
1667
1668 state->split_start++;
1669 break;
1670 case 11:
1671 if (rdev->wiphy.n_vendor_commands) {
1672 const struct nl80211_vendor_cmd_info *info;
1673 struct nlattr *nested;
1674
1675 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1676 if (!nested)
1677 goto nla_put_failure;
1678
1679 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1680 info = &rdev->wiphy.vendor_commands[i].info;
1681 if (nla_put(msg, i + 1, sizeof(*info), info))
1682 goto nla_put_failure;
1683 }
1684 nla_nest_end(msg, nested);
1685 }
1686
1687 if (rdev->wiphy.n_vendor_events) {
1688 const struct nl80211_vendor_cmd_info *info;
1689 struct nlattr *nested;
1690
1691 nested = nla_nest_start(msg,
1692 NL80211_ATTR_VENDOR_EVENTS);
1693 if (!nested)
1694 goto nla_put_failure;
1695
1696 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1697 info = &rdev->wiphy.vendor_events[i];
1698 if (nla_put(msg, i + 1, sizeof(*info), info))
1699 goto nla_put_failure;
1700 }
1701 nla_nest_end(msg, nested);
1702 }
1703 state->split_start++;
1704 break;
1705 case 12:
1706 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1707 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1708 rdev->wiphy.max_num_csa_counters))
1709 goto nla_put_failure;
1710
1711 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1712 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1713 goto nla_put_failure;
1714
1715 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1716 sizeof(rdev->wiphy.ext_features),
1717 rdev->wiphy.ext_features))
1718 goto nla_put_failure;
1719
1720 /* done */
1721 state->split_start = 0;
1722 break;
1723 }
1724 finish:
1725 genlmsg_end(msg, hdr);
1726 return 0;
1727
1728 nla_put_failure:
1729 genlmsg_cancel(msg, hdr);
1730 return -EMSGSIZE;
1731 }
1732
1733 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1734 struct netlink_callback *cb,
1735 struct nl80211_dump_wiphy_state *state)
1736 {
1737 struct nlattr **tb = nl80211_fam.attrbuf;
1738 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1739 tb, nl80211_fam.maxattr, nl80211_policy);
1740 /* ignore parse errors for backward compatibility */
1741 if (ret)
1742 return 0;
1743
1744 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1745 if (tb[NL80211_ATTR_WIPHY])
1746 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1747 if (tb[NL80211_ATTR_WDEV])
1748 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1749 if (tb[NL80211_ATTR_IFINDEX]) {
1750 struct net_device *netdev;
1751 struct cfg80211_registered_device *rdev;
1752 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1753
1754 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1755 if (!netdev)
1756 return -ENODEV;
1757 if (netdev->ieee80211_ptr) {
1758 rdev = wiphy_to_rdev(
1759 netdev->ieee80211_ptr->wiphy);
1760 state->filter_wiphy = rdev->wiphy_idx;
1761 }
1762 }
1763
1764 return 0;
1765 }
1766
1767 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1768 {
1769 int idx = 0, ret;
1770 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1771 struct cfg80211_registered_device *rdev;
1772
1773 rtnl_lock();
1774 if (!state) {
1775 state = kzalloc(sizeof(*state), GFP_KERNEL);
1776 if (!state) {
1777 rtnl_unlock();
1778 return -ENOMEM;
1779 }
1780 state->filter_wiphy = -1;
1781 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1782 if (ret) {
1783 kfree(state);
1784 rtnl_unlock();
1785 return ret;
1786 }
1787 cb->args[0] = (long)state;
1788 }
1789
1790 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1791 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1792 continue;
1793 if (++idx <= state->start)
1794 continue;
1795 if (state->filter_wiphy != -1 &&
1796 state->filter_wiphy != rdev->wiphy_idx)
1797 continue;
1798 /* attempt to fit multiple wiphy data chunks into the skb */
1799 do {
1800 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1801 skb,
1802 NETLINK_CB(cb->skb).portid,
1803 cb->nlh->nlmsg_seq,
1804 NLM_F_MULTI, state);
1805 if (ret < 0) {
1806 /*
1807 * If sending the wiphy data didn't fit (ENOBUFS
1808 * or EMSGSIZE returned), this SKB is still
1809 * empty (so it's not too big because another
1810 * wiphy dataset is already in the skb) and
1811 * we've not tried to adjust the dump allocation
1812 * yet ... then adjust the alloc size to be
1813 * bigger, and return 1 but with the empty skb.
1814 * This results in an empty message being RX'ed
1815 * in userspace, but that is ignored.
1816 *
1817 * We can then retry with the larger buffer.
1818 */
1819 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1820 !skb->len && !state->split &&
1821 cb->min_dump_alloc < 4096) {
1822 cb->min_dump_alloc = 4096;
1823 state->split_start = 0;
1824 rtnl_unlock();
1825 return 1;
1826 }
1827 idx--;
1828 break;
1829 }
1830 } while (state->split_start > 0);
1831 break;
1832 }
1833 rtnl_unlock();
1834
1835 state->start = idx;
1836
1837 return skb->len;
1838 }
1839
1840 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1841 {
1842 kfree((void *)cb->args[0]);
1843 return 0;
1844 }
1845
1846 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1847 {
1848 struct sk_buff *msg;
1849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1850 struct nl80211_dump_wiphy_state state = {};
1851
1852 msg = nlmsg_new(4096, GFP_KERNEL);
1853 if (!msg)
1854 return -ENOMEM;
1855
1856 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1857 info->snd_portid, info->snd_seq, 0,
1858 &state) < 0) {
1859 nlmsg_free(msg);
1860 return -ENOBUFS;
1861 }
1862
1863 return genlmsg_reply(msg, info);
1864 }
1865
1866 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1867 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1868 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1869 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1870 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1871 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1872 };
1873
1874 static int parse_txq_params(struct nlattr *tb[],
1875 struct ieee80211_txq_params *txq_params)
1876 {
1877 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1878 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1879 !tb[NL80211_TXQ_ATTR_AIFS])
1880 return -EINVAL;
1881
1882 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1883 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1884 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1885 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1886 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1887
1888 if (txq_params->ac >= NL80211_NUM_ACS)
1889 return -EINVAL;
1890
1891 return 0;
1892 }
1893
1894 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1895 {
1896 /*
1897 * You can only set the channel explicitly for WDS interfaces,
1898 * all others have their channel managed via their respective
1899 * "establish a connection" command (connect, join, ...)
1900 *
1901 * For AP/GO and mesh mode, the channel can be set with the
1902 * channel userspace API, but is only stored and passed to the
1903 * low-level driver when the AP starts or the mesh is joined.
1904 * This is for backward compatibility, userspace can also give
1905 * the channel in the start-ap or join-mesh commands instead.
1906 *
1907 * Monitors are special as they are normally slaved to
1908 * whatever else is going on, so they have their own special
1909 * operation to set the monitor channel if possible.
1910 */
1911 return !wdev ||
1912 wdev->iftype == NL80211_IFTYPE_AP ||
1913 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1914 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1915 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1916 }
1917
1918 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1919 struct genl_info *info,
1920 struct cfg80211_chan_def *chandef)
1921 {
1922 u32 control_freq;
1923
1924 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1925 return -EINVAL;
1926
1927 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1928
1929 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1930 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1931 chandef->center_freq1 = control_freq;
1932 chandef->center_freq2 = 0;
1933
1934 /* Primary channel not allowed */
1935 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1936 return -EINVAL;
1937
1938 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1939 enum nl80211_channel_type chantype;
1940
1941 chantype = nla_get_u32(
1942 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1943
1944 switch (chantype) {
1945 case NL80211_CHAN_NO_HT:
1946 case NL80211_CHAN_HT20:
1947 case NL80211_CHAN_HT40PLUS:
1948 case NL80211_CHAN_HT40MINUS:
1949 cfg80211_chandef_create(chandef, chandef->chan,
1950 chantype);
1951 break;
1952 default:
1953 return -EINVAL;
1954 }
1955 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1956 chandef->width =
1957 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1958 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1959 chandef->center_freq1 =
1960 nla_get_u32(
1961 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1962 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1963 chandef->center_freq2 =
1964 nla_get_u32(
1965 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1966 }
1967
1968 if (!cfg80211_chandef_valid(chandef))
1969 return -EINVAL;
1970
1971 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1972 IEEE80211_CHAN_DISABLED))
1973 return -EINVAL;
1974
1975 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1976 chandef->width == NL80211_CHAN_WIDTH_10) &&
1977 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1978 return -EINVAL;
1979
1980 return 0;
1981 }
1982
1983 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1984 struct net_device *dev,
1985 struct genl_info *info)
1986 {
1987 struct cfg80211_chan_def chandef;
1988 int result;
1989 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1990 struct wireless_dev *wdev = NULL;
1991
1992 if (dev)
1993 wdev = dev->ieee80211_ptr;
1994 if (!nl80211_can_set_dev_channel(wdev))
1995 return -EOPNOTSUPP;
1996 if (wdev)
1997 iftype = wdev->iftype;
1998
1999 result = nl80211_parse_chandef(rdev, info, &chandef);
2000 if (result)
2001 return result;
2002
2003 switch (iftype) {
2004 case NL80211_IFTYPE_AP:
2005 case NL80211_IFTYPE_P2P_GO:
2006 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2007 iftype)) {
2008 result = -EINVAL;
2009 break;
2010 }
2011 if (wdev->beacon_interval) {
2012 if (!dev || !rdev->ops->set_ap_chanwidth ||
2013 !(rdev->wiphy.features &
2014 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2015 result = -EBUSY;
2016 break;
2017 }
2018
2019 /* Only allow dynamic channel width changes */
2020 if (chandef.chan != wdev->preset_chandef.chan) {
2021 result = -EBUSY;
2022 break;
2023 }
2024 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2025 if (result)
2026 break;
2027 }
2028 wdev->preset_chandef = chandef;
2029 result = 0;
2030 break;
2031 case NL80211_IFTYPE_MESH_POINT:
2032 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2033 break;
2034 case NL80211_IFTYPE_MONITOR:
2035 result = cfg80211_set_monitor_channel(rdev, &chandef);
2036 break;
2037 default:
2038 result = -EINVAL;
2039 }
2040
2041 return result;
2042 }
2043
2044 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2045 {
2046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047 struct net_device *netdev = info->user_ptr[1];
2048
2049 return __nl80211_set_channel(rdev, netdev, info);
2050 }
2051
2052 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2053 {
2054 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2055 struct net_device *dev = info->user_ptr[1];
2056 struct wireless_dev *wdev = dev->ieee80211_ptr;
2057 const u8 *bssid;
2058
2059 if (!info->attrs[NL80211_ATTR_MAC])
2060 return -EINVAL;
2061
2062 if (netif_running(dev))
2063 return -EBUSY;
2064
2065 if (!rdev->ops->set_wds_peer)
2066 return -EOPNOTSUPP;
2067
2068 if (wdev->iftype != NL80211_IFTYPE_WDS)
2069 return -EOPNOTSUPP;
2070
2071 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2072 return rdev_set_wds_peer(rdev, dev, bssid);
2073 }
2074
2075
2076 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2077 {
2078 struct cfg80211_registered_device *rdev;
2079 struct net_device *netdev = NULL;
2080 struct wireless_dev *wdev;
2081 int result = 0, rem_txq_params = 0;
2082 struct nlattr *nl_txq_params;
2083 u32 changed;
2084 u8 retry_short = 0, retry_long = 0;
2085 u32 frag_threshold = 0, rts_threshold = 0;
2086 u8 coverage_class = 0;
2087
2088 ASSERT_RTNL();
2089
2090 /*
2091 * Try to find the wiphy and netdev. Normally this
2092 * function shouldn't need the netdev, but this is
2093 * done for backward compatibility -- previously
2094 * setting the channel was done per wiphy, but now
2095 * it is per netdev. Previous userland like hostapd
2096 * also passed a netdev to set_wiphy, so that it is
2097 * possible to let that go to the right netdev!
2098 */
2099
2100 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2101 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2102
2103 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2104 if (netdev && netdev->ieee80211_ptr)
2105 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2106 else
2107 netdev = NULL;
2108 }
2109
2110 if (!netdev) {
2111 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2112 info->attrs);
2113 if (IS_ERR(rdev))
2114 return PTR_ERR(rdev);
2115 wdev = NULL;
2116 netdev = NULL;
2117 result = 0;
2118 } else
2119 wdev = netdev->ieee80211_ptr;
2120
2121 /*
2122 * end workaround code, by now the rdev is available
2123 * and locked, and wdev may or may not be NULL.
2124 */
2125
2126 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2127 result = cfg80211_dev_rename(
2128 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2129
2130 if (result)
2131 return result;
2132
2133 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2134 struct ieee80211_txq_params txq_params;
2135 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2136
2137 if (!rdev->ops->set_txq_params)
2138 return -EOPNOTSUPP;
2139
2140 if (!netdev)
2141 return -EINVAL;
2142
2143 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2144 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2145 return -EINVAL;
2146
2147 if (!netif_running(netdev))
2148 return -ENETDOWN;
2149
2150 nla_for_each_nested(nl_txq_params,
2151 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2152 rem_txq_params) {
2153 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2154 nla_data(nl_txq_params),
2155 nla_len(nl_txq_params),
2156 txq_params_policy);
2157 if (result)
2158 return result;
2159 result = parse_txq_params(tb, &txq_params);
2160 if (result)
2161 return result;
2162
2163 result = rdev_set_txq_params(rdev, netdev,
2164 &txq_params);
2165 if (result)
2166 return result;
2167 }
2168 }
2169
2170 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2171 result = __nl80211_set_channel(
2172 rdev,
2173 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2174 info);
2175 if (result)
2176 return result;
2177 }
2178
2179 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2180 struct wireless_dev *txp_wdev = wdev;
2181 enum nl80211_tx_power_setting type;
2182 int idx, mbm = 0;
2183
2184 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2185 txp_wdev = NULL;
2186
2187 if (!rdev->ops->set_tx_power)
2188 return -EOPNOTSUPP;
2189
2190 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2191 type = nla_get_u32(info->attrs[idx]);
2192
2193 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2194 (type != NL80211_TX_POWER_AUTOMATIC))
2195 return -EINVAL;
2196
2197 if (type != NL80211_TX_POWER_AUTOMATIC) {
2198 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2199 mbm = nla_get_u32(info->attrs[idx]);
2200 }
2201
2202 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2203 if (result)
2204 return result;
2205 }
2206
2207 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2208 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2209 u32 tx_ant, rx_ant;
2210 if ((!rdev->wiphy.available_antennas_tx &&
2211 !rdev->wiphy.available_antennas_rx) ||
2212 !rdev->ops->set_antenna)
2213 return -EOPNOTSUPP;
2214
2215 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2216 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2217
2218 /* reject antenna configurations which don't match the
2219 * available antenna masks, except for the "all" mask */
2220 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2221 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2222 return -EINVAL;
2223
2224 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2225 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2226
2227 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2228 if (result)
2229 return result;
2230 }
2231
2232 changed = 0;
2233
2234 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2235 retry_short = nla_get_u8(
2236 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2237 if (retry_short == 0)
2238 return -EINVAL;
2239
2240 changed |= WIPHY_PARAM_RETRY_SHORT;
2241 }
2242
2243 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2244 retry_long = nla_get_u8(
2245 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2246 if (retry_long == 0)
2247 return -EINVAL;
2248
2249 changed |= WIPHY_PARAM_RETRY_LONG;
2250 }
2251
2252 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2253 frag_threshold = nla_get_u32(
2254 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2255 if (frag_threshold < 256)
2256 return -EINVAL;
2257
2258 if (frag_threshold != (u32) -1) {
2259 /*
2260 * Fragments (apart from the last one) are required to
2261 * have even length. Make the fragmentation code
2262 * simpler by stripping LSB should someone try to use
2263 * odd threshold value.
2264 */
2265 frag_threshold &= ~0x1;
2266 }
2267 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2268 }
2269
2270 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2271 rts_threshold = nla_get_u32(
2272 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2273 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2274 }
2275
2276 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2277 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2278 return -EINVAL;
2279
2280 coverage_class = nla_get_u8(
2281 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2282 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2283 }
2284
2285 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2286 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2287 return -EOPNOTSUPP;
2288
2289 changed |= WIPHY_PARAM_DYN_ACK;
2290 }
2291
2292 if (changed) {
2293 u8 old_retry_short, old_retry_long;
2294 u32 old_frag_threshold, old_rts_threshold;
2295 u8 old_coverage_class;
2296
2297 if (!rdev->ops->set_wiphy_params)
2298 return -EOPNOTSUPP;
2299
2300 old_retry_short = rdev->wiphy.retry_short;
2301 old_retry_long = rdev->wiphy.retry_long;
2302 old_frag_threshold = rdev->wiphy.frag_threshold;
2303 old_rts_threshold = rdev->wiphy.rts_threshold;
2304 old_coverage_class = rdev->wiphy.coverage_class;
2305
2306 if (changed & WIPHY_PARAM_RETRY_SHORT)
2307 rdev->wiphy.retry_short = retry_short;
2308 if (changed & WIPHY_PARAM_RETRY_LONG)
2309 rdev->wiphy.retry_long = retry_long;
2310 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2311 rdev->wiphy.frag_threshold = frag_threshold;
2312 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2313 rdev->wiphy.rts_threshold = rts_threshold;
2314 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2315 rdev->wiphy.coverage_class = coverage_class;
2316
2317 result = rdev_set_wiphy_params(rdev, changed);
2318 if (result) {
2319 rdev->wiphy.retry_short = old_retry_short;
2320 rdev->wiphy.retry_long = old_retry_long;
2321 rdev->wiphy.frag_threshold = old_frag_threshold;
2322 rdev->wiphy.rts_threshold = old_rts_threshold;
2323 rdev->wiphy.coverage_class = old_coverage_class;
2324 return result;
2325 }
2326 }
2327 return 0;
2328 }
2329
2330 static inline u64 wdev_id(struct wireless_dev *wdev)
2331 {
2332 return (u64)wdev->identifier |
2333 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2334 }
2335
2336 static int nl80211_send_chandef(struct sk_buff *msg,
2337 const struct cfg80211_chan_def *chandef)
2338 {
2339 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2340 return -EINVAL;
2341
2342 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2343 chandef->chan->center_freq))
2344 return -ENOBUFS;
2345 switch (chandef->width) {
2346 case NL80211_CHAN_WIDTH_20_NOHT:
2347 case NL80211_CHAN_WIDTH_20:
2348 case NL80211_CHAN_WIDTH_40:
2349 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2350 cfg80211_get_chandef_type(chandef)))
2351 return -ENOBUFS;
2352 break;
2353 default:
2354 break;
2355 }
2356 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2357 return -ENOBUFS;
2358 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2359 return -ENOBUFS;
2360 if (chandef->center_freq2 &&
2361 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2362 return -ENOBUFS;
2363 return 0;
2364 }
2365
2366 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2367 struct cfg80211_registered_device *rdev,
2368 struct wireless_dev *wdev, bool removal)
2369 {
2370 struct net_device *dev = wdev->netdev;
2371 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2372 void *hdr;
2373
2374 if (removal)
2375 cmd = NL80211_CMD_DEL_INTERFACE;
2376
2377 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2378 if (!hdr)
2379 return -1;
2380
2381 if (dev &&
2382 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2383 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2384 goto nla_put_failure;
2385
2386 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2387 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2388 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2389 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2390 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2391 rdev->devlist_generation ^
2392 (cfg80211_rdev_list_generation << 2)))
2393 goto nla_put_failure;
2394
2395 if (rdev->ops->get_channel) {
2396 int ret;
2397 struct cfg80211_chan_def chandef;
2398
2399 ret = rdev_get_channel(rdev, wdev, &chandef);
2400 if (ret == 0) {
2401 if (nl80211_send_chandef(msg, &chandef))
2402 goto nla_put_failure;
2403 }
2404 }
2405
2406 if (wdev->ssid_len) {
2407 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2408 goto nla_put_failure;
2409 }
2410
2411 genlmsg_end(msg, hdr);
2412 return 0;
2413
2414 nla_put_failure:
2415 genlmsg_cancel(msg, hdr);
2416 return -EMSGSIZE;
2417 }
2418
2419 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2420 {
2421 int wp_idx = 0;
2422 int if_idx = 0;
2423 int wp_start = cb->args[0];
2424 int if_start = cb->args[1];
2425 struct cfg80211_registered_device *rdev;
2426 struct wireless_dev *wdev;
2427
2428 rtnl_lock();
2429 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2430 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2431 continue;
2432 if (wp_idx < wp_start) {
2433 wp_idx++;
2434 continue;
2435 }
2436 if_idx = 0;
2437
2438 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2439 if (if_idx < if_start) {
2440 if_idx++;
2441 continue;
2442 }
2443 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2444 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2445 rdev, wdev, false) < 0) {
2446 goto out;
2447 }
2448 if_idx++;
2449 }
2450
2451 wp_idx++;
2452 }
2453 out:
2454 rtnl_unlock();
2455
2456 cb->args[0] = wp_idx;
2457 cb->args[1] = if_idx;
2458
2459 return skb->len;
2460 }
2461
2462 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2463 {
2464 struct sk_buff *msg;
2465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2466 struct wireless_dev *wdev = info->user_ptr[1];
2467
2468 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2469 if (!msg)
2470 return -ENOMEM;
2471
2472 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2473 rdev, wdev, false) < 0) {
2474 nlmsg_free(msg);
2475 return -ENOBUFS;
2476 }
2477
2478 return genlmsg_reply(msg, info);
2479 }
2480
2481 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2482 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2483 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2484 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2485 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2486 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2487 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2488 };
2489
2490 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2491 {
2492 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2493 int flag;
2494
2495 *mntrflags = 0;
2496
2497 if (!nla)
2498 return -EINVAL;
2499
2500 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2501 nla, mntr_flags_policy))
2502 return -EINVAL;
2503
2504 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2505 if (flags[flag])
2506 *mntrflags |= (1<<flag);
2507
2508 return 0;
2509 }
2510
2511 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2512 struct net_device *netdev, u8 use_4addr,
2513 enum nl80211_iftype iftype)
2514 {
2515 if (!use_4addr) {
2516 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2517 return -EBUSY;
2518 return 0;
2519 }
2520
2521 switch (iftype) {
2522 case NL80211_IFTYPE_AP_VLAN:
2523 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2524 return 0;
2525 break;
2526 case NL80211_IFTYPE_STATION:
2527 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2528 return 0;
2529 break;
2530 default:
2531 break;
2532 }
2533
2534 return -EOPNOTSUPP;
2535 }
2536
2537 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2538 {
2539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2540 struct vif_params params;
2541 int err;
2542 enum nl80211_iftype otype, ntype;
2543 struct net_device *dev = info->user_ptr[1];
2544 u32 _flags, *flags = NULL;
2545 bool change = false;
2546
2547 memset(&params, 0, sizeof(params));
2548
2549 otype = ntype = dev->ieee80211_ptr->iftype;
2550
2551 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2552 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2553 if (otype != ntype)
2554 change = true;
2555 if (ntype > NL80211_IFTYPE_MAX)
2556 return -EINVAL;
2557 }
2558
2559 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2560 struct wireless_dev *wdev = dev->ieee80211_ptr;
2561
2562 if (ntype != NL80211_IFTYPE_MESH_POINT)
2563 return -EINVAL;
2564 if (netif_running(dev))
2565 return -EBUSY;
2566
2567 wdev_lock(wdev);
2568 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2569 IEEE80211_MAX_MESH_ID_LEN);
2570 wdev->mesh_id_up_len =
2571 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2572 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2573 wdev->mesh_id_up_len);
2574 wdev_unlock(wdev);
2575 }
2576
2577 if (info->attrs[NL80211_ATTR_4ADDR]) {
2578 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2579 change = true;
2580 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2581 if (err)
2582 return err;
2583 } else {
2584 params.use_4addr = -1;
2585 }
2586
2587 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2588 if (ntype != NL80211_IFTYPE_MONITOR)
2589 return -EINVAL;
2590 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2591 &_flags);
2592 if (err)
2593 return err;
2594
2595 flags = &_flags;
2596 change = true;
2597 }
2598
2599 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2600 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2601 return -EOPNOTSUPP;
2602
2603 if (change)
2604 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2605 else
2606 err = 0;
2607
2608 if (!err && params.use_4addr != -1)
2609 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2610
2611 return err;
2612 }
2613
2614 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2615 {
2616 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2617 struct vif_params params;
2618 struct wireless_dev *wdev;
2619 struct sk_buff *msg, *event;
2620 int err;
2621 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2622 u32 flags;
2623
2624 /* to avoid failing a new interface creation due to pending removal */
2625 cfg80211_destroy_ifaces(rdev);
2626
2627 memset(&params, 0, sizeof(params));
2628
2629 if (!info->attrs[NL80211_ATTR_IFNAME])
2630 return -EINVAL;
2631
2632 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2633 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2634 if (type > NL80211_IFTYPE_MAX)
2635 return -EINVAL;
2636 }
2637
2638 if (!rdev->ops->add_virtual_intf ||
2639 !(rdev->wiphy.interface_modes & (1 << type)))
2640 return -EOPNOTSUPP;
2641
2642 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2643 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2644 info->attrs[NL80211_ATTR_MAC]) {
2645 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2646 ETH_ALEN);
2647 if (!is_valid_ether_addr(params.macaddr))
2648 return -EADDRNOTAVAIL;
2649 }
2650
2651 if (info->attrs[NL80211_ATTR_4ADDR]) {
2652 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2653 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2654 if (err)
2655 return err;
2656 }
2657
2658 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2659 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2660 &flags);
2661
2662 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2663 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2664 return -EOPNOTSUPP;
2665
2666 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2667 if (!msg)
2668 return -ENOMEM;
2669
2670 wdev = rdev_add_virtual_intf(rdev,
2671 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2672 NET_NAME_USER, type, err ? NULL : &flags,
2673 &params);
2674 if (WARN_ON(!wdev)) {
2675 nlmsg_free(msg);
2676 return -EPROTO;
2677 } else if (IS_ERR(wdev)) {
2678 nlmsg_free(msg);
2679 return PTR_ERR(wdev);
2680 }
2681
2682 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2683 wdev->owner_nlportid = info->snd_portid;
2684
2685 switch (type) {
2686 case NL80211_IFTYPE_MESH_POINT:
2687 if (!info->attrs[NL80211_ATTR_MESH_ID])
2688 break;
2689 wdev_lock(wdev);
2690 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2691 IEEE80211_MAX_MESH_ID_LEN);
2692 wdev->mesh_id_up_len =
2693 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2694 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2695 wdev->mesh_id_up_len);
2696 wdev_unlock(wdev);
2697 break;
2698 case NL80211_IFTYPE_P2P_DEVICE:
2699 /*
2700 * P2P Device doesn't have a netdev, so doesn't go
2701 * through the netdev notifier and must be added here
2702 */
2703 mutex_init(&wdev->mtx);
2704 INIT_LIST_HEAD(&wdev->event_list);
2705 spin_lock_init(&wdev->event_lock);
2706 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2707 spin_lock_init(&wdev->mgmt_registrations_lock);
2708
2709 wdev->identifier = ++rdev->wdev_id;
2710 list_add_rcu(&wdev->list, &rdev->wdev_list);
2711 rdev->devlist_generation++;
2712 break;
2713 default:
2714 break;
2715 }
2716
2717 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2718 rdev, wdev, false) < 0) {
2719 nlmsg_free(msg);
2720 return -ENOBUFS;
2721 }
2722
2723 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2724 if (event) {
2725 if (nl80211_send_iface(event, 0, 0, 0,
2726 rdev, wdev, false) < 0) {
2727 nlmsg_free(event);
2728 goto out;
2729 }
2730
2731 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2732 event, 0, NL80211_MCGRP_CONFIG,
2733 GFP_KERNEL);
2734 }
2735
2736 out:
2737 return genlmsg_reply(msg, info);
2738 }
2739
2740 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2741 {
2742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2743 struct wireless_dev *wdev = info->user_ptr[1];
2744 struct sk_buff *msg;
2745 int status;
2746
2747 if (!rdev->ops->del_virtual_intf)
2748 return -EOPNOTSUPP;
2749
2750 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2751 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2752 nlmsg_free(msg);
2753 msg = NULL;
2754 }
2755
2756 /*
2757 * If we remove a wireless device without a netdev then clear
2758 * user_ptr[1] so that nl80211_post_doit won't dereference it
2759 * to check if it needs to do dev_put(). Otherwise it crashes
2760 * since the wdev has been freed, unlike with a netdev where
2761 * we need the dev_put() for the netdev to really be freed.
2762 */
2763 if (!wdev->netdev)
2764 info->user_ptr[1] = NULL;
2765
2766 status = rdev_del_virtual_intf(rdev, wdev);
2767 if (status >= 0 && msg)
2768 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2769 msg, 0, NL80211_MCGRP_CONFIG,
2770 GFP_KERNEL);
2771 else
2772 nlmsg_free(msg);
2773
2774 return status;
2775 }
2776
2777 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2778 {
2779 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2780 struct net_device *dev = info->user_ptr[1];
2781 u16 noack_map;
2782
2783 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2784 return -EINVAL;
2785
2786 if (!rdev->ops->set_noack_map)
2787 return -EOPNOTSUPP;
2788
2789 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2790
2791 return rdev_set_noack_map(rdev, dev, noack_map);
2792 }
2793
2794 struct get_key_cookie {
2795 struct sk_buff *msg;
2796 int error;
2797 int idx;
2798 };
2799
2800 static void get_key_callback(void *c, struct key_params *params)
2801 {
2802 struct nlattr *key;
2803 struct get_key_cookie *cookie = c;
2804
2805 if ((params->key &&
2806 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2807 params->key_len, params->key)) ||
2808 (params->seq &&
2809 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2810 params->seq_len, params->seq)) ||
2811 (params->cipher &&
2812 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2813 params->cipher)))
2814 goto nla_put_failure;
2815
2816 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2817 if (!key)
2818 goto nla_put_failure;
2819
2820 if ((params->key &&
2821 nla_put(cookie->msg, NL80211_KEY_DATA,
2822 params->key_len, params->key)) ||
2823 (params->seq &&
2824 nla_put(cookie->msg, NL80211_KEY_SEQ,
2825 params->seq_len, params->seq)) ||
2826 (params->cipher &&
2827 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2828 params->cipher)))
2829 goto nla_put_failure;
2830
2831 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2832 goto nla_put_failure;
2833
2834 nla_nest_end(cookie->msg, key);
2835
2836 return;
2837 nla_put_failure:
2838 cookie->error = 1;
2839 }
2840
2841 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2842 {
2843 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2844 int err;
2845 struct net_device *dev = info->user_ptr[1];
2846 u8 key_idx = 0;
2847 const u8 *mac_addr = NULL;
2848 bool pairwise;
2849 struct get_key_cookie cookie = {
2850 .error = 0,
2851 };
2852 void *hdr;
2853 struct sk_buff *msg;
2854
2855 if (info->attrs[NL80211_ATTR_KEY_IDX])
2856 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2857
2858 if (key_idx > 5)
2859 return -EINVAL;
2860
2861 if (info->attrs[NL80211_ATTR_MAC])
2862 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2863
2864 pairwise = !!mac_addr;
2865 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2866 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2867 if (kt >= NUM_NL80211_KEYTYPES)
2868 return -EINVAL;
2869 if (kt != NL80211_KEYTYPE_GROUP &&
2870 kt != NL80211_KEYTYPE_PAIRWISE)
2871 return -EINVAL;
2872 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2873 }
2874
2875 if (!rdev->ops->get_key)
2876 return -EOPNOTSUPP;
2877
2878 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2879 return -ENOENT;
2880
2881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2882 if (!msg)
2883 return -ENOMEM;
2884
2885 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2886 NL80211_CMD_NEW_KEY);
2887 if (!hdr)
2888 goto nla_put_failure;
2889
2890 cookie.msg = msg;
2891 cookie.idx = key_idx;
2892
2893 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2894 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2895 goto nla_put_failure;
2896 if (mac_addr &&
2897 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2898 goto nla_put_failure;
2899
2900 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2901 get_key_callback);
2902
2903 if (err)
2904 goto free_msg;
2905
2906 if (cookie.error)
2907 goto nla_put_failure;
2908
2909 genlmsg_end(msg, hdr);
2910 return genlmsg_reply(msg, info);
2911
2912 nla_put_failure:
2913 err = -ENOBUFS;
2914 free_msg:
2915 nlmsg_free(msg);
2916 return err;
2917 }
2918
2919 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2920 {
2921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2922 struct key_parse key;
2923 int err;
2924 struct net_device *dev = info->user_ptr[1];
2925
2926 err = nl80211_parse_key(info, &key);
2927 if (err)
2928 return err;
2929
2930 if (key.idx < 0)
2931 return -EINVAL;
2932
2933 /* only support setting default key */
2934 if (!key.def && !key.defmgmt)
2935 return -EINVAL;
2936
2937 wdev_lock(dev->ieee80211_ptr);
2938
2939 if (key.def) {
2940 if (!rdev->ops->set_default_key) {
2941 err = -EOPNOTSUPP;
2942 goto out;
2943 }
2944
2945 err = nl80211_key_allowed(dev->ieee80211_ptr);
2946 if (err)
2947 goto out;
2948
2949 err = rdev_set_default_key(rdev, dev, key.idx,
2950 key.def_uni, key.def_multi);
2951
2952 if (err)
2953 goto out;
2954
2955 #ifdef CONFIG_CFG80211_WEXT
2956 dev->ieee80211_ptr->wext.default_key = key.idx;
2957 #endif
2958 } else {
2959 if (key.def_uni || !key.def_multi) {
2960 err = -EINVAL;
2961 goto out;
2962 }
2963
2964 if (!rdev->ops->set_default_mgmt_key) {
2965 err = -EOPNOTSUPP;
2966 goto out;
2967 }
2968
2969 err = nl80211_key_allowed(dev->ieee80211_ptr);
2970 if (err)
2971 goto out;
2972
2973 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2974 if (err)
2975 goto out;
2976
2977 #ifdef CONFIG_CFG80211_WEXT
2978 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2979 #endif
2980 }
2981
2982 out:
2983 wdev_unlock(dev->ieee80211_ptr);
2984
2985 return err;
2986 }
2987
2988 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2989 {
2990 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2991 int err;
2992 struct net_device *dev = info->user_ptr[1];
2993 struct key_parse key;
2994 const u8 *mac_addr = NULL;
2995
2996 err = nl80211_parse_key(info, &key);
2997 if (err)
2998 return err;
2999
3000 if (!key.p.key)
3001 return -EINVAL;
3002
3003 if (info->attrs[NL80211_ATTR_MAC])
3004 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3005
3006 if (key.type == -1) {
3007 if (mac_addr)
3008 key.type = NL80211_KEYTYPE_PAIRWISE;
3009 else
3010 key.type = NL80211_KEYTYPE_GROUP;
3011 }
3012
3013 /* for now */
3014 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3015 key.type != NL80211_KEYTYPE_GROUP)
3016 return -EINVAL;
3017
3018 if (!rdev->ops->add_key)
3019 return -EOPNOTSUPP;
3020
3021 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3022 key.type == NL80211_KEYTYPE_PAIRWISE,
3023 mac_addr))
3024 return -EINVAL;
3025
3026 wdev_lock(dev->ieee80211_ptr);
3027 err = nl80211_key_allowed(dev->ieee80211_ptr);
3028 if (!err)
3029 err = rdev_add_key(rdev, dev, key.idx,
3030 key.type == NL80211_KEYTYPE_PAIRWISE,
3031 mac_addr, &key.p);
3032 wdev_unlock(dev->ieee80211_ptr);
3033
3034 return err;
3035 }
3036
3037 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3038 {
3039 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3040 int err;
3041 struct net_device *dev = info->user_ptr[1];
3042 u8 *mac_addr = NULL;
3043 struct key_parse key;
3044
3045 err = nl80211_parse_key(info, &key);
3046 if (err)
3047 return err;
3048
3049 if (info->attrs[NL80211_ATTR_MAC])
3050 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3051
3052 if (key.type == -1) {
3053 if (mac_addr)
3054 key.type = NL80211_KEYTYPE_PAIRWISE;
3055 else
3056 key.type = NL80211_KEYTYPE_GROUP;
3057 }
3058
3059 /* for now */
3060 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3061 key.type != NL80211_KEYTYPE_GROUP)
3062 return -EINVAL;
3063
3064 if (!rdev->ops->del_key)
3065 return -EOPNOTSUPP;
3066
3067 wdev_lock(dev->ieee80211_ptr);
3068 err = nl80211_key_allowed(dev->ieee80211_ptr);
3069
3070 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3071 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3072 err = -ENOENT;
3073
3074 if (!err)
3075 err = rdev_del_key(rdev, dev, key.idx,
3076 key.type == NL80211_KEYTYPE_PAIRWISE,
3077 mac_addr);
3078
3079 #ifdef CONFIG_CFG80211_WEXT
3080 if (!err) {
3081 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3082 dev->ieee80211_ptr->wext.default_key = -1;
3083 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3084 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3085 }
3086 #endif
3087 wdev_unlock(dev->ieee80211_ptr);
3088
3089 return err;
3090 }
3091
3092 /* This function returns an error or the number of nested attributes */
3093 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3094 {
3095 struct nlattr *attr;
3096 int n_entries = 0, tmp;
3097
3098 nla_for_each_nested(attr, nl_attr, tmp) {
3099 if (nla_len(attr) != ETH_ALEN)
3100 return -EINVAL;
3101
3102 n_entries++;
3103 }
3104
3105 return n_entries;
3106 }
3107
3108 /*
3109 * This function parses ACL information and allocates memory for ACL data.
3110 * On successful return, the calling function is responsible to free the
3111 * ACL buffer returned by this function.
3112 */
3113 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3114 struct genl_info *info)
3115 {
3116 enum nl80211_acl_policy acl_policy;
3117 struct nlattr *attr;
3118 struct cfg80211_acl_data *acl;
3119 int i = 0, n_entries, tmp;
3120
3121 if (!wiphy->max_acl_mac_addrs)
3122 return ERR_PTR(-EOPNOTSUPP);
3123
3124 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3125 return ERR_PTR(-EINVAL);
3126
3127 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3128 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3129 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3130 return ERR_PTR(-EINVAL);
3131
3132 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3133 return ERR_PTR(-EINVAL);
3134
3135 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3136 if (n_entries < 0)
3137 return ERR_PTR(n_entries);
3138
3139 if (n_entries > wiphy->max_acl_mac_addrs)
3140 return ERR_PTR(-ENOTSUPP);
3141
3142 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3143 GFP_KERNEL);
3144 if (!acl)
3145 return ERR_PTR(-ENOMEM);
3146
3147 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3148 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3149 i++;
3150 }
3151
3152 acl->n_acl_entries = n_entries;
3153 acl->acl_policy = acl_policy;
3154
3155 return acl;
3156 }
3157
3158 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3159 {
3160 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3161 struct net_device *dev = info->user_ptr[1];
3162 struct cfg80211_acl_data *acl;
3163 int err;
3164
3165 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3166 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3167 return -EOPNOTSUPP;
3168
3169 if (!dev->ieee80211_ptr->beacon_interval)
3170 return -EINVAL;
3171
3172 acl = parse_acl_data(&rdev->wiphy, info);
3173 if (IS_ERR(acl))
3174 return PTR_ERR(acl);
3175
3176 err = rdev_set_mac_acl(rdev, dev, acl);
3177
3178 kfree(acl);
3179
3180 return err;
3181 }
3182
3183 static int nl80211_parse_beacon(struct nlattr *attrs[],
3184 struct cfg80211_beacon_data *bcn)
3185 {
3186 bool haveinfo = false;
3187
3188 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3189 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3190 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3191 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3192 return -EINVAL;
3193
3194 memset(bcn, 0, sizeof(*bcn));
3195
3196 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3197 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3198 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3199 if (!bcn->head_len)
3200 return -EINVAL;
3201 haveinfo = true;
3202 }
3203
3204 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3205 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3206 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3207 haveinfo = true;
3208 }
3209
3210 if (!haveinfo)
3211 return -EINVAL;
3212
3213 if (attrs[NL80211_ATTR_IE]) {
3214 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3215 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3216 }
3217
3218 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3219 bcn->proberesp_ies =
3220 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3221 bcn->proberesp_ies_len =
3222 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3223 }
3224
3225 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3226 bcn->assocresp_ies =
3227 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3228 bcn->assocresp_ies_len =
3229 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3230 }
3231
3232 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3233 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3234 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3235 }
3236
3237 return 0;
3238 }
3239
3240 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3241 struct cfg80211_ap_settings *params)
3242 {
3243 struct wireless_dev *wdev;
3244 bool ret = false;
3245
3246 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3247 if (wdev->iftype != NL80211_IFTYPE_AP &&
3248 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3249 continue;
3250
3251 if (!wdev->preset_chandef.chan)
3252 continue;
3253
3254 params->chandef = wdev->preset_chandef;
3255 ret = true;
3256 break;
3257 }
3258
3259 return ret;
3260 }
3261
3262 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3263 enum nl80211_auth_type auth_type,
3264 enum nl80211_commands cmd)
3265 {
3266 if (auth_type > NL80211_AUTHTYPE_MAX)
3267 return false;
3268
3269 switch (cmd) {
3270 case NL80211_CMD_AUTHENTICATE:
3271 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3272 auth_type == NL80211_AUTHTYPE_SAE)
3273 return false;
3274 return true;
3275 case NL80211_CMD_CONNECT:
3276 case NL80211_CMD_START_AP:
3277 /* SAE not supported yet */
3278 if (auth_type == NL80211_AUTHTYPE_SAE)
3279 return false;
3280 return true;
3281 default:
3282 return false;
3283 }
3284 }
3285
3286 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3287 {
3288 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3289 struct net_device *dev = info->user_ptr[1];
3290 struct wireless_dev *wdev = dev->ieee80211_ptr;
3291 struct cfg80211_ap_settings params;
3292 int err;
3293
3294 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3295 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3296 return -EOPNOTSUPP;
3297
3298 if (!rdev->ops->start_ap)
3299 return -EOPNOTSUPP;
3300
3301 if (wdev->beacon_interval)
3302 return -EALREADY;
3303
3304 memset(&params, 0, sizeof(params));
3305
3306 /* these are required for START_AP */
3307 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3308 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3309 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3310 return -EINVAL;
3311
3312 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3313 if (err)
3314 return err;
3315
3316 params.beacon_interval =
3317 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3318 params.dtim_period =
3319 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3320
3321 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3322 if (err)
3323 return err;
3324
3325 /*
3326 * In theory, some of these attributes should be required here
3327 * but since they were not used when the command was originally
3328 * added, keep them optional for old user space programs to let
3329 * them continue to work with drivers that do not need the
3330 * additional information -- drivers must check!
3331 */
3332 if (info->attrs[NL80211_ATTR_SSID]) {
3333 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3334 params.ssid_len =
3335 nla_len(info->attrs[NL80211_ATTR_SSID]);
3336 if (params.ssid_len == 0 ||
3337 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3338 return -EINVAL;
3339 }
3340
3341 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3342 params.hidden_ssid = nla_get_u32(
3343 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3344 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3345 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3346 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3347 return -EINVAL;
3348 }
3349
3350 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3351
3352 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3353 params.auth_type = nla_get_u32(
3354 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3355 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3356 NL80211_CMD_START_AP))
3357 return -EINVAL;
3358 } else
3359 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3360
3361 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3362 NL80211_MAX_NR_CIPHER_SUITES);
3363 if (err)
3364 return err;
3365
3366 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3367 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3368 return -EOPNOTSUPP;
3369 params.inactivity_timeout = nla_get_u16(
3370 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3371 }
3372
3373 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3374 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3375 return -EINVAL;
3376 params.p2p_ctwindow =
3377 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3378 if (params.p2p_ctwindow > 127)
3379 return -EINVAL;
3380 if (params.p2p_ctwindow != 0 &&
3381 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3382 return -EINVAL;
3383 }
3384
3385 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3386 u8 tmp;
3387
3388 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3389 return -EINVAL;
3390 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3391 if (tmp > 1)
3392 return -EINVAL;
3393 params.p2p_opp_ps = tmp;
3394 if (params.p2p_opp_ps != 0 &&
3395 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3396 return -EINVAL;
3397 }
3398
3399 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3400 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3401 if (err)
3402 return err;
3403 } else if (wdev->preset_chandef.chan) {
3404 params.chandef = wdev->preset_chandef;
3405 } else if (!nl80211_get_ap_channel(rdev, &params))
3406 return -EINVAL;
3407
3408 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3409 wdev->iftype))
3410 return -EINVAL;
3411
3412 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3413 params.acl = parse_acl_data(&rdev->wiphy, info);
3414 if (IS_ERR(params.acl))
3415 return PTR_ERR(params.acl);
3416 }
3417
3418 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3419 params.smps_mode =
3420 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3421 switch (params.smps_mode) {
3422 case NL80211_SMPS_OFF:
3423 break;
3424 case NL80211_SMPS_STATIC:
3425 if (!(rdev->wiphy.features &
3426 NL80211_FEATURE_STATIC_SMPS))
3427 return -EINVAL;
3428 break;
3429 case NL80211_SMPS_DYNAMIC:
3430 if (!(rdev->wiphy.features &
3431 NL80211_FEATURE_DYNAMIC_SMPS))
3432 return -EINVAL;
3433 break;
3434 default:
3435 return -EINVAL;
3436 }
3437 } else {
3438 params.smps_mode = NL80211_SMPS_OFF;
3439 }
3440
3441 wdev_lock(wdev);
3442 err = rdev_start_ap(rdev, dev, &params);
3443 if (!err) {
3444 wdev->preset_chandef = params.chandef;
3445 wdev->beacon_interval = params.beacon_interval;
3446 wdev->chandef = params.chandef;
3447 wdev->ssid_len = params.ssid_len;
3448 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3449 }
3450 wdev_unlock(wdev);
3451
3452 kfree(params.acl);
3453
3454 return err;
3455 }
3456
3457 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3458 {
3459 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3460 struct net_device *dev = info->user_ptr[1];
3461 struct wireless_dev *wdev = dev->ieee80211_ptr;
3462 struct cfg80211_beacon_data params;
3463 int err;
3464
3465 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3466 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3467 return -EOPNOTSUPP;
3468
3469 if (!rdev->ops->change_beacon)
3470 return -EOPNOTSUPP;
3471
3472 if (!wdev->beacon_interval)
3473 return -EINVAL;
3474
3475 err = nl80211_parse_beacon(info->attrs, &params);
3476 if (err)
3477 return err;
3478
3479 wdev_lock(wdev);
3480 err = rdev_change_beacon(rdev, dev, &params);
3481 wdev_unlock(wdev);
3482
3483 return err;
3484 }
3485
3486 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3487 {
3488 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3489 struct net_device *dev = info->user_ptr[1];
3490
3491 return cfg80211_stop_ap(rdev, dev, false);
3492 }
3493
3494 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3495 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3496 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3497 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3498 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3499 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3500 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3501 };
3502
3503 static int parse_station_flags(struct genl_info *info,
3504 enum nl80211_iftype iftype,
3505 struct station_parameters *params)
3506 {
3507 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3508 struct nlattr *nla;
3509 int flag;
3510
3511 /*
3512 * Try parsing the new attribute first so userspace
3513 * can specify both for older kernels.
3514 */
3515 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3516 if (nla) {
3517 struct nl80211_sta_flag_update *sta_flags;
3518
3519 sta_flags = nla_data(nla);
3520 params->sta_flags_mask = sta_flags->mask;
3521 params->sta_flags_set = sta_flags->set;
3522 params->sta_flags_set &= params->sta_flags_mask;
3523 if ((params->sta_flags_mask |
3524 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3525 return -EINVAL;
3526 return 0;
3527 }
3528
3529 /* if present, parse the old attribute */
3530
3531 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3532 if (!nla)
3533 return 0;
3534
3535 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3536 nla, sta_flags_policy))
3537 return -EINVAL;
3538
3539 /*
3540 * Only allow certain flags for interface types so that
3541 * other attributes are silently ignored. Remember that
3542 * this is backward compatibility code with old userspace
3543 * and shouldn't be hit in other cases anyway.
3544 */
3545 switch (iftype) {
3546 case NL80211_IFTYPE_AP:
3547 case NL80211_IFTYPE_AP_VLAN:
3548 case NL80211_IFTYPE_P2P_GO:
3549 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3550 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3551 BIT(NL80211_STA_FLAG_WME) |
3552 BIT(NL80211_STA_FLAG_MFP);
3553 break;
3554 case NL80211_IFTYPE_P2P_CLIENT:
3555 case NL80211_IFTYPE_STATION:
3556 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3557 BIT(NL80211_STA_FLAG_TDLS_PEER);
3558 break;
3559 case NL80211_IFTYPE_MESH_POINT:
3560 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3561 BIT(NL80211_STA_FLAG_MFP) |
3562 BIT(NL80211_STA_FLAG_AUTHORIZED);
3563 default:
3564 return -EINVAL;
3565 }
3566
3567 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3568 if (flags[flag]) {
3569 params->sta_flags_set |= (1<<flag);
3570
3571 /* no longer support new API additions in old API */
3572 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3573 return -EINVAL;
3574 }
3575 }
3576
3577 return 0;
3578 }
3579
3580 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3581 int attr)
3582 {
3583 struct nlattr *rate;
3584 u32 bitrate;
3585 u16 bitrate_compat;
3586 enum nl80211_attrs rate_flg;
3587
3588 rate = nla_nest_start(msg, attr);
3589 if (!rate)
3590 return false;
3591
3592 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3593 bitrate = cfg80211_calculate_bitrate(info);
3594 /* report 16-bit bitrate only if we can */
3595 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3596 if (bitrate > 0 &&
3597 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3598 return false;
3599 if (bitrate_compat > 0 &&
3600 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3601 return false;
3602
3603 switch (info->bw) {
3604 case RATE_INFO_BW_5:
3605 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3606 break;
3607 case RATE_INFO_BW_10:
3608 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3609 break;
3610 default:
3611 WARN_ON(1);
3612 /* fall through */
3613 case RATE_INFO_BW_20:
3614 rate_flg = 0;
3615 break;
3616 case RATE_INFO_BW_40:
3617 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3618 break;
3619 case RATE_INFO_BW_80:
3620 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3621 break;
3622 case RATE_INFO_BW_160:
3623 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3624 break;
3625 }
3626
3627 if (rate_flg && nla_put_flag(msg, rate_flg))
3628 return false;
3629
3630 if (info->flags & RATE_INFO_FLAGS_MCS) {
3631 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3632 return false;
3633 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3634 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3635 return false;
3636 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3637 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3638 return false;
3639 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3640 return false;
3641 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3642 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3643 return false;
3644 }
3645
3646 nla_nest_end(msg, rate);
3647 return true;
3648 }
3649
3650 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3651 int id)
3652 {
3653 void *attr;
3654 int i = 0;
3655
3656 if (!mask)
3657 return true;
3658
3659 attr = nla_nest_start(msg, id);
3660 if (!attr)
3661 return false;
3662
3663 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3664 if (!(mask & BIT(i)))
3665 continue;
3666
3667 if (nla_put_u8(msg, i, signal[i]))
3668 return false;
3669 }
3670
3671 nla_nest_end(msg, attr);
3672
3673 return true;
3674 }
3675
3676 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3677 u32 seq, int flags,
3678 struct cfg80211_registered_device *rdev,
3679 struct net_device *dev,
3680 const u8 *mac_addr, struct station_info *sinfo)
3681 {
3682 void *hdr;
3683 struct nlattr *sinfoattr, *bss_param;
3684
3685 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3686 if (!hdr)
3687 return -1;
3688
3689 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3690 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3691 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3692 goto nla_put_failure;
3693
3694 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3695 if (!sinfoattr)
3696 goto nla_put_failure;
3697
3698 #define PUT_SINFO(attr, memb, type) do { \
3699 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3700 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3701 sinfo->memb)) \
3702 goto nla_put_failure; \
3703 } while (0)
3704
3705 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3706 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3707
3708 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3709 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3710 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3711 (u32)sinfo->rx_bytes))
3712 goto nla_put_failure;
3713
3714 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3715 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3716 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3717 (u32)sinfo->tx_bytes))
3718 goto nla_put_failure;
3719
3720 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3721 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3722 PUT_SINFO(LLID, llid, u16);
3723 PUT_SINFO(PLID, plid, u16);
3724 PUT_SINFO(PLINK_STATE, plink_state, u8);
3725
3726 switch (rdev->wiphy.signal_type) {
3727 case CFG80211_SIGNAL_TYPE_MBM:
3728 PUT_SINFO(SIGNAL, signal, u8);
3729 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3730 break;
3731 default:
3732 break;
3733 }
3734 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3735 if (!nl80211_put_signal(msg, sinfo->chains,
3736 sinfo->chain_signal,
3737 NL80211_STA_INFO_CHAIN_SIGNAL))
3738 goto nla_put_failure;
3739 }
3740 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3741 if (!nl80211_put_signal(msg, sinfo->chains,
3742 sinfo->chain_signal_avg,
3743 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3744 goto nla_put_failure;
3745 }
3746 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3747 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3748 NL80211_STA_INFO_TX_BITRATE))
3749 goto nla_put_failure;
3750 }
3751 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3752 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3753 NL80211_STA_INFO_RX_BITRATE))
3754 goto nla_put_failure;
3755 }
3756
3757 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3758 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3759 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3760 PUT_SINFO(TX_FAILED, tx_failed, u32);
3761 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3762 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3763 PUT_SINFO(LOCAL_PM, local_pm, u32);
3764 PUT_SINFO(PEER_PM, peer_pm, u32);
3765 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3766
3767 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3768 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3769 if (!bss_param)
3770 goto nla_put_failure;
3771
3772 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3773 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3774 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3775 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3776 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3777 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3778 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3779 sinfo->bss_param.dtim_period) ||
3780 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3781 sinfo->bss_param.beacon_interval))
3782 goto nla_put_failure;
3783
3784 nla_nest_end(msg, bss_param);
3785 }
3786 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3787 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3788 sizeof(struct nl80211_sta_flag_update),
3789 &sinfo->sta_flags))
3790 goto nla_put_failure;
3791
3792 PUT_SINFO(T_OFFSET, t_offset, u64);
3793 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3794 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3795 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3796
3797 #undef PUT_SINFO
3798
3799 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3800 struct nlattr *tidsattr;
3801 int tid;
3802
3803 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3804 if (!tidsattr)
3805 goto nla_put_failure;
3806
3807 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3808 struct cfg80211_tid_stats *tidstats;
3809 struct nlattr *tidattr;
3810
3811 tidstats = &sinfo->pertid[tid];
3812
3813 if (!tidstats->filled)
3814 continue;
3815
3816 tidattr = nla_nest_start(msg, tid + 1);
3817 if (!tidattr)
3818 goto nla_put_failure;
3819
3820 #define PUT_TIDVAL(attr, memb, type) do { \
3821 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3822 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3823 tidstats->memb)) \
3824 goto nla_put_failure; \
3825 } while (0)
3826
3827 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3828 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3829 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3830 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3831
3832 #undef PUT_TIDVAL
3833 nla_nest_end(msg, tidattr);
3834 }
3835
3836 nla_nest_end(msg, tidsattr);
3837 }
3838
3839 nla_nest_end(msg, sinfoattr);
3840
3841 if (sinfo->assoc_req_ies_len &&
3842 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3843 sinfo->assoc_req_ies))
3844 goto nla_put_failure;
3845
3846 genlmsg_end(msg, hdr);
3847 return 0;
3848
3849 nla_put_failure:
3850 genlmsg_cancel(msg, hdr);
3851 return -EMSGSIZE;
3852 }
3853
3854 static int nl80211_dump_station(struct sk_buff *skb,
3855 struct netlink_callback *cb)
3856 {
3857 struct station_info sinfo;
3858 struct cfg80211_registered_device *rdev;
3859 struct wireless_dev *wdev;
3860 u8 mac_addr[ETH_ALEN];
3861 int sta_idx = cb->args[2];
3862 int err;
3863
3864 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3865 if (err)
3866 return err;
3867
3868 if (!wdev->netdev) {
3869 err = -EINVAL;
3870 goto out_err;
3871 }
3872
3873 if (!rdev->ops->dump_station) {
3874 err = -EOPNOTSUPP;
3875 goto out_err;
3876 }
3877
3878 while (1) {
3879 memset(&sinfo, 0, sizeof(sinfo));
3880 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3881 mac_addr, &sinfo);
3882 if (err == -ENOENT)
3883 break;
3884 if (err)
3885 goto out_err;
3886
3887 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3888 NETLINK_CB(cb->skb).portid,
3889 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3890 rdev, wdev->netdev, mac_addr,
3891 &sinfo) < 0)
3892 goto out;
3893
3894 sta_idx++;
3895 }
3896
3897
3898 out:
3899 cb->args[2] = sta_idx;
3900 err = skb->len;
3901 out_err:
3902 nl80211_finish_wdev_dump(rdev);
3903
3904 return err;
3905 }
3906
3907 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3908 {
3909 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3910 struct net_device *dev = info->user_ptr[1];
3911 struct station_info sinfo;
3912 struct sk_buff *msg;
3913 u8 *mac_addr = NULL;
3914 int err;
3915
3916 memset(&sinfo, 0, sizeof(sinfo));
3917
3918 if (!info->attrs[NL80211_ATTR_MAC])
3919 return -EINVAL;
3920
3921 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3922
3923 if (!rdev->ops->get_station)
3924 return -EOPNOTSUPP;
3925
3926 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3927 if (err)
3928 return err;
3929
3930 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3931 if (!msg)
3932 return -ENOMEM;
3933
3934 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3935 info->snd_portid, info->snd_seq, 0,
3936 rdev, dev, mac_addr, &sinfo) < 0) {
3937 nlmsg_free(msg);
3938 return -ENOBUFS;
3939 }
3940
3941 return genlmsg_reply(msg, info);
3942 }
3943
3944 int cfg80211_check_station_change(struct wiphy *wiphy,
3945 struct station_parameters *params,
3946 enum cfg80211_station_type statype)
3947 {
3948 if (params->listen_interval != -1)
3949 return -EINVAL;
3950 if (params->aid &&
3951 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3952 return -EINVAL;
3953
3954 /* When you run into this, adjust the code below for the new flag */
3955 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3956
3957 switch (statype) {
3958 case CFG80211_STA_MESH_PEER_KERNEL:
3959 case CFG80211_STA_MESH_PEER_USER:
3960 /*
3961 * No ignoring the TDLS flag here -- the userspace mesh
3962 * code doesn't have the bug of including TDLS in the
3963 * mask everywhere.
3964 */
3965 if (params->sta_flags_mask &
3966 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3967 BIT(NL80211_STA_FLAG_MFP) |
3968 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3969 return -EINVAL;
3970 break;
3971 case CFG80211_STA_TDLS_PEER_SETUP:
3972 case CFG80211_STA_TDLS_PEER_ACTIVE:
3973 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3974 return -EINVAL;
3975 /* ignore since it can't change */
3976 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3977 break;
3978 default:
3979 /* disallow mesh-specific things */
3980 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3981 return -EINVAL;
3982 if (params->local_pm)
3983 return -EINVAL;
3984 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3985 return -EINVAL;
3986 }
3987
3988 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3989 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3990 /* TDLS can't be set, ... */
3991 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3992 return -EINVAL;
3993 /*
3994 * ... but don't bother the driver with it. This works around
3995 * a hostapd/wpa_supplicant issue -- it always includes the
3996 * TLDS_PEER flag in the mask even for AP mode.
3997 */
3998 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3999 }
4000
4001 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
4002 /* reject other things that can't change */
4003 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4004 return -EINVAL;
4005 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4006 return -EINVAL;
4007 if (params->supported_rates)
4008 return -EINVAL;
4009 if (params->ext_capab || params->ht_capa || params->vht_capa)
4010 return -EINVAL;
4011 }
4012
4013 if (statype != CFG80211_STA_AP_CLIENT) {
4014 if (params->vlan)
4015 return -EINVAL;
4016 }
4017
4018 switch (statype) {
4019 case CFG80211_STA_AP_MLME_CLIENT:
4020 /* Use this only for authorizing/unauthorizing a station */
4021 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4022 return -EOPNOTSUPP;
4023 break;
4024 case CFG80211_STA_AP_CLIENT:
4025 /* accept only the listed bits */
4026 if (params->sta_flags_mask &
4027 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4028 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4029 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4030 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4031 BIT(NL80211_STA_FLAG_WME) |
4032 BIT(NL80211_STA_FLAG_MFP)))
4033 return -EINVAL;
4034
4035 /* but authenticated/associated only if driver handles it */
4036 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4037 params->sta_flags_mask &
4038 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4039 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4040 return -EINVAL;
4041 break;
4042 case CFG80211_STA_IBSS:
4043 case CFG80211_STA_AP_STA:
4044 /* reject any changes other than AUTHORIZED */
4045 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4046 return -EINVAL;
4047 break;
4048 case CFG80211_STA_TDLS_PEER_SETUP:
4049 /* reject any changes other than AUTHORIZED or WME */
4050 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4051 BIT(NL80211_STA_FLAG_WME)))
4052 return -EINVAL;
4053 /* force (at least) rates when authorizing */
4054 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4055 !params->supported_rates)
4056 return -EINVAL;
4057 break;
4058 case CFG80211_STA_TDLS_PEER_ACTIVE:
4059 /* reject any changes */
4060 return -EINVAL;
4061 case CFG80211_STA_MESH_PEER_KERNEL:
4062 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4063 return -EINVAL;
4064 break;
4065 case CFG80211_STA_MESH_PEER_USER:
4066 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4067 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4068 return -EINVAL;
4069 break;
4070 }
4071
4072 return 0;
4073 }
4074 EXPORT_SYMBOL(cfg80211_check_station_change);
4075
4076 /*
4077 * Get vlan interface making sure it is running and on the right wiphy.
4078 */
4079 static struct net_device *get_vlan(struct genl_info *info,
4080 struct cfg80211_registered_device *rdev)
4081 {
4082 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4083 struct net_device *v;
4084 int ret;
4085
4086 if (!vlanattr)
4087 return NULL;
4088
4089 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4090 if (!v)
4091 return ERR_PTR(-ENODEV);
4092
4093 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4094 ret = -EINVAL;
4095 goto error;
4096 }
4097
4098 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4099 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4100 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4101 ret = -EINVAL;
4102 goto error;
4103 }
4104
4105 if (!netif_running(v)) {
4106 ret = -ENETDOWN;
4107 goto error;
4108 }
4109
4110 return v;
4111 error:
4112 dev_put(v);
4113 return ERR_PTR(ret);
4114 }
4115
4116 static const struct nla_policy
4117 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4118 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4119 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4120 };
4121
4122 static int nl80211_parse_sta_wme(struct genl_info *info,
4123 struct station_parameters *params)
4124 {
4125 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4126 struct nlattr *nla;
4127 int err;
4128
4129 /* parse WME attributes if present */
4130 if (!info->attrs[NL80211_ATTR_STA_WME])
4131 return 0;
4132
4133 nla = info->attrs[NL80211_ATTR_STA_WME];
4134 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4135 nl80211_sta_wme_policy);
4136 if (err)
4137 return err;
4138
4139 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4140 params->uapsd_queues = nla_get_u8(
4141 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4142 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4143 return -EINVAL;
4144
4145 if (tb[NL80211_STA_WME_MAX_SP])
4146 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4147
4148 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4149 return -EINVAL;
4150
4151 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4152
4153 return 0;
4154 }
4155
4156 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4157 struct station_parameters *params)
4158 {
4159 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4160 params->supported_channels =
4161 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4162 params->supported_channels_len =
4163 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4164 /*
4165 * Need to include at least one (first channel, number of
4166 * channels) tuple for each subband, and must have proper
4167 * tuples for the rest of the data as well.
4168 */
4169 if (params->supported_channels_len < 2)
4170 return -EINVAL;
4171 if (params->supported_channels_len % 2)
4172 return -EINVAL;
4173 }
4174
4175 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4176 params->supported_oper_classes =
4177 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4178 params->supported_oper_classes_len =
4179 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4180 /*
4181 * The value of the Length field of the Supported Operating
4182 * Classes element is between 2 and 253.
4183 */
4184 if (params->supported_oper_classes_len < 2 ||
4185 params->supported_oper_classes_len > 253)
4186 return -EINVAL;
4187 }
4188 return 0;
4189 }
4190
4191 static int nl80211_set_station_tdls(struct genl_info *info,
4192 struct station_parameters *params)
4193 {
4194 int err;
4195 /* Dummy STA entry gets updated once the peer capabilities are known */
4196 if (info->attrs[NL80211_ATTR_PEER_AID])
4197 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4198 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4199 params->ht_capa =
4200 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4201 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4202 params->vht_capa =
4203 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4204
4205 err = nl80211_parse_sta_channel_info(info, params);
4206 if (err)
4207 return err;
4208
4209 return nl80211_parse_sta_wme(info, params);
4210 }
4211
4212 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4213 {
4214 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4215 struct net_device *dev = info->user_ptr[1];
4216 struct station_parameters params;
4217 u8 *mac_addr;
4218 int err;
4219
4220 memset(&params, 0, sizeof(params));
4221
4222 params.listen_interval = -1;
4223
4224 if (!rdev->ops->change_station)
4225 return -EOPNOTSUPP;
4226
4227 if (info->attrs[NL80211_ATTR_STA_AID])
4228 return -EINVAL;
4229
4230 if (!info->attrs[NL80211_ATTR_MAC])
4231 return -EINVAL;
4232
4233 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4234
4235 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4236 params.supported_rates =
4237 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4238 params.supported_rates_len =
4239 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4240 }
4241
4242 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4243 params.capability =
4244 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4245 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4246 }
4247
4248 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4249 params.ext_capab =
4250 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4251 params.ext_capab_len =
4252 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4253 }
4254
4255 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4256 return -EINVAL;
4257
4258 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4259 return -EINVAL;
4260
4261 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4262 params.plink_action =
4263 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4264 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4265 return -EINVAL;
4266 }
4267
4268 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4269 params.plink_state =
4270 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4271 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4272 return -EINVAL;
4273 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4274 }
4275
4276 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4277 enum nl80211_mesh_power_mode pm = nla_get_u32(
4278 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4279
4280 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4281 pm > NL80211_MESH_POWER_MAX)
4282 return -EINVAL;
4283
4284 params.local_pm = pm;
4285 }
4286
4287 /* Include parameters for TDLS peer (will check later) */
4288 err = nl80211_set_station_tdls(info, &params);
4289 if (err)
4290 return err;
4291
4292 params.vlan = get_vlan(info, rdev);
4293 if (IS_ERR(params.vlan))
4294 return PTR_ERR(params.vlan);
4295
4296 switch (dev->ieee80211_ptr->iftype) {
4297 case NL80211_IFTYPE_AP:
4298 case NL80211_IFTYPE_AP_VLAN:
4299 case NL80211_IFTYPE_P2P_GO:
4300 case NL80211_IFTYPE_P2P_CLIENT:
4301 case NL80211_IFTYPE_STATION:
4302 case NL80211_IFTYPE_ADHOC:
4303 case NL80211_IFTYPE_MESH_POINT:
4304 break;
4305 default:
4306 err = -EOPNOTSUPP;
4307 goto out_put_vlan;
4308 }
4309
4310 /* driver will call cfg80211_check_station_change() */
4311 err = rdev_change_station(rdev, dev, mac_addr, &params);
4312
4313 out_put_vlan:
4314 if (params.vlan)
4315 dev_put(params.vlan);
4316
4317 return err;
4318 }
4319
4320 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4321 {
4322 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4323 int err;
4324 struct net_device *dev = info->user_ptr[1];
4325 struct station_parameters params;
4326 u8 *mac_addr = NULL;
4327
4328 memset(&params, 0, sizeof(params));
4329
4330 if (!rdev->ops->add_station)
4331 return -EOPNOTSUPP;
4332
4333 if (!info->attrs[NL80211_ATTR_MAC])
4334 return -EINVAL;
4335
4336 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4337 return -EINVAL;
4338
4339 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4340 return -EINVAL;
4341
4342 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4343 !info->attrs[NL80211_ATTR_PEER_AID])
4344 return -EINVAL;
4345
4346 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4347 params.supported_rates =
4348 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4349 params.supported_rates_len =
4350 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4351 params.listen_interval =
4352 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4353
4354 if (info->attrs[NL80211_ATTR_PEER_AID])
4355 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4356 else
4357 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4358 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4359 return -EINVAL;
4360
4361 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4362 params.capability =
4363 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4364 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4365 }
4366
4367 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4368 params.ext_capab =
4369 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4370 params.ext_capab_len =
4371 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4372 }
4373
4374 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4375 params.ht_capa =
4376 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4377
4378 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4379 params.vht_capa =
4380 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4381
4382 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4383 params.opmode_notif_used = true;
4384 params.opmode_notif =
4385 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4386 }
4387
4388 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4389 params.plink_action =
4390 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4391 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4392 return -EINVAL;
4393 }
4394
4395 err = nl80211_parse_sta_channel_info(info, &params);
4396 if (err)
4397 return err;
4398
4399 err = nl80211_parse_sta_wme(info, &params);
4400 if (err)
4401 return err;
4402
4403 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4404 return -EINVAL;
4405
4406 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4407 * as userspace might just pass through the capabilities from the IEs
4408 * directly, rather than enforcing this restriction and returning an
4409 * error in this case.
4410 */
4411 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4412 params.ht_capa = NULL;
4413 params.vht_capa = NULL;
4414 }
4415
4416 /* When you run into this, adjust the code below for the new flag */
4417 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4418
4419 switch (dev->ieee80211_ptr->iftype) {
4420 case NL80211_IFTYPE_AP:
4421 case NL80211_IFTYPE_AP_VLAN:
4422 case NL80211_IFTYPE_P2P_GO:
4423 /* ignore WME attributes if iface/sta is not capable */
4424 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4425 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4426 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4427
4428 /* TDLS peers cannot be added */
4429 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4430 info->attrs[NL80211_ATTR_PEER_AID])
4431 return -EINVAL;
4432 /* but don't bother the driver with it */
4433 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4434
4435 /* allow authenticated/associated only if driver handles it */
4436 if (!(rdev->wiphy.features &
4437 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4438 params.sta_flags_mask &
4439 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4440 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4441 return -EINVAL;
4442
4443 /* must be last in here for error handling */
4444 params.vlan = get_vlan(info, rdev);
4445 if (IS_ERR(params.vlan))
4446 return PTR_ERR(params.vlan);
4447 break;
4448 case NL80211_IFTYPE_MESH_POINT:
4449 /* ignore uAPSD data */
4450 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4451
4452 /* associated is disallowed */
4453 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4454 return -EINVAL;
4455 /* TDLS peers cannot be added */
4456 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4457 info->attrs[NL80211_ATTR_PEER_AID])
4458 return -EINVAL;
4459 break;
4460 case NL80211_IFTYPE_STATION:
4461 case NL80211_IFTYPE_P2P_CLIENT:
4462 /* ignore uAPSD data */
4463 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4464
4465 /* these are disallowed */
4466 if (params.sta_flags_mask &
4467 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4468 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4469 return -EINVAL;
4470 /* Only TDLS peers can be added */
4471 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4472 return -EINVAL;
4473 /* Can only add if TDLS ... */
4474 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4475 return -EOPNOTSUPP;
4476 /* ... with external setup is supported */
4477 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4478 return -EOPNOTSUPP;
4479 /*
4480 * Older wpa_supplicant versions always mark the TDLS peer
4481 * as authorized, but it shouldn't yet be.
4482 */
4483 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4484 break;
4485 default:
4486 return -EOPNOTSUPP;
4487 }
4488
4489 /* be aware of params.vlan when changing code here */
4490
4491 err = rdev_add_station(rdev, dev, mac_addr, &params);
4492
4493 if (params.vlan)
4494 dev_put(params.vlan);
4495 return err;
4496 }
4497
4498 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4499 {
4500 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4501 struct net_device *dev = info->user_ptr[1];
4502 struct station_del_parameters params;
4503
4504 memset(&params, 0, sizeof(params));
4505
4506 if (info->attrs[NL80211_ATTR_MAC])
4507 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4508
4509 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4510 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4511 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4512 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4513 return -EINVAL;
4514
4515 if (!rdev->ops->del_station)
4516 return -EOPNOTSUPP;
4517
4518 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4519 params.subtype =
4520 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4521 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4522 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4523 return -EINVAL;
4524 } else {
4525 /* Default to Deauthentication frame */
4526 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4527 }
4528
4529 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4530 params.reason_code =
4531 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4532 if (params.reason_code == 0)
4533 return -EINVAL; /* 0 is reserved */
4534 } else {
4535 /* Default to reason code 2 */
4536 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4537 }
4538
4539 return rdev_del_station(rdev, dev, &params);
4540 }
4541
4542 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4543 int flags, struct net_device *dev,
4544 u8 *dst, u8 *next_hop,
4545 struct mpath_info *pinfo)
4546 {
4547 void *hdr;
4548 struct nlattr *pinfoattr;
4549
4550 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4551 if (!hdr)
4552 return -1;
4553
4554 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4555 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4556 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4557 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4558 goto nla_put_failure;
4559
4560 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4561 if (!pinfoattr)
4562 goto nla_put_failure;
4563 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4564 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4565 pinfo->frame_qlen))
4566 goto nla_put_failure;
4567 if (((pinfo->filled & MPATH_INFO_SN) &&
4568 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4569 ((pinfo->filled & MPATH_INFO_METRIC) &&
4570 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4571 pinfo->metric)) ||
4572 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4573 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4574 pinfo->exptime)) ||
4575 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4576 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4577 pinfo->flags)) ||
4578 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4579 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4580 pinfo->discovery_timeout)) ||
4581 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4582 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4583 pinfo->discovery_retries)))
4584 goto nla_put_failure;
4585
4586 nla_nest_end(msg, pinfoattr);
4587
4588 genlmsg_end(msg, hdr);
4589 return 0;
4590
4591 nla_put_failure:
4592 genlmsg_cancel(msg, hdr);
4593 return -EMSGSIZE;
4594 }
4595
4596 static int nl80211_dump_mpath(struct sk_buff *skb,
4597 struct netlink_callback *cb)
4598 {
4599 struct mpath_info pinfo;
4600 struct cfg80211_registered_device *rdev;
4601 struct wireless_dev *wdev;
4602 u8 dst[ETH_ALEN];
4603 u8 next_hop[ETH_ALEN];
4604 int path_idx = cb->args[2];
4605 int err;
4606
4607 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4608 if (err)
4609 return err;
4610
4611 if (!rdev->ops->dump_mpath) {
4612 err = -EOPNOTSUPP;
4613 goto out_err;
4614 }
4615
4616 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4617 err = -EOPNOTSUPP;
4618 goto out_err;
4619 }
4620
4621 while (1) {
4622 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4623 next_hop, &pinfo);
4624 if (err == -ENOENT)
4625 break;
4626 if (err)
4627 goto out_err;
4628
4629 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4630 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4631 wdev->netdev, dst, next_hop,
4632 &pinfo) < 0)
4633 goto out;
4634
4635 path_idx++;
4636 }
4637
4638
4639 out:
4640 cb->args[2] = path_idx;
4641 err = skb->len;
4642 out_err:
4643 nl80211_finish_wdev_dump(rdev);
4644 return err;
4645 }
4646
4647 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4648 {
4649 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4650 int err;
4651 struct net_device *dev = info->user_ptr[1];
4652 struct mpath_info pinfo;
4653 struct sk_buff *msg;
4654 u8 *dst = NULL;
4655 u8 next_hop[ETH_ALEN];
4656
4657 memset(&pinfo, 0, sizeof(pinfo));
4658
4659 if (!info->attrs[NL80211_ATTR_MAC])
4660 return -EINVAL;
4661
4662 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4663
4664 if (!rdev->ops->get_mpath)
4665 return -EOPNOTSUPP;
4666
4667 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4668 return -EOPNOTSUPP;
4669
4670 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4671 if (err)
4672 return err;
4673
4674 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4675 if (!msg)
4676 return -ENOMEM;
4677
4678 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4679 dev, dst, next_hop, &pinfo) < 0) {
4680 nlmsg_free(msg);
4681 return -ENOBUFS;
4682 }
4683
4684 return genlmsg_reply(msg, info);
4685 }
4686
4687 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4688 {
4689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4690 struct net_device *dev = info->user_ptr[1];
4691 u8 *dst = NULL;
4692 u8 *next_hop = NULL;
4693
4694 if (!info->attrs[NL80211_ATTR_MAC])
4695 return -EINVAL;
4696
4697 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4698 return -EINVAL;
4699
4700 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4701 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4702
4703 if (!rdev->ops->change_mpath)
4704 return -EOPNOTSUPP;
4705
4706 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4707 return -EOPNOTSUPP;
4708
4709 return rdev_change_mpath(rdev, dev, dst, next_hop);
4710 }
4711
4712 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4713 {
4714 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4715 struct net_device *dev = info->user_ptr[1];
4716 u8 *dst = NULL;
4717 u8 *next_hop = NULL;
4718
4719 if (!info->attrs[NL80211_ATTR_MAC])
4720 return -EINVAL;
4721
4722 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4723 return -EINVAL;
4724
4725 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4726 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4727
4728 if (!rdev->ops->add_mpath)
4729 return -EOPNOTSUPP;
4730
4731 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4732 return -EOPNOTSUPP;
4733
4734 return rdev_add_mpath(rdev, dev, dst, next_hop);
4735 }
4736
4737 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4738 {
4739 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4740 struct net_device *dev = info->user_ptr[1];
4741 u8 *dst = NULL;
4742
4743 if (info->attrs[NL80211_ATTR_MAC])
4744 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4745
4746 if (!rdev->ops->del_mpath)
4747 return -EOPNOTSUPP;
4748
4749 return rdev_del_mpath(rdev, dev, dst);
4750 }
4751
4752 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4753 {
4754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4755 int err;
4756 struct net_device *dev = info->user_ptr[1];
4757 struct mpath_info pinfo;
4758 struct sk_buff *msg;
4759 u8 *dst = NULL;
4760 u8 mpp[ETH_ALEN];
4761
4762 memset(&pinfo, 0, sizeof(pinfo));
4763
4764 if (!info->attrs[NL80211_ATTR_MAC])
4765 return -EINVAL;
4766
4767 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4768
4769 if (!rdev->ops->get_mpp)
4770 return -EOPNOTSUPP;
4771
4772 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4773 return -EOPNOTSUPP;
4774
4775 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4776 if (err)
4777 return err;
4778
4779 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4780 if (!msg)
4781 return -ENOMEM;
4782
4783 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4784 dev, dst, mpp, &pinfo) < 0) {
4785 nlmsg_free(msg);
4786 return -ENOBUFS;
4787 }
4788
4789 return genlmsg_reply(msg, info);
4790 }
4791
4792 static int nl80211_dump_mpp(struct sk_buff *skb,
4793 struct netlink_callback *cb)
4794 {
4795 struct mpath_info pinfo;
4796 struct cfg80211_registered_device *rdev;
4797 struct wireless_dev *wdev;
4798 u8 dst[ETH_ALEN];
4799 u8 mpp[ETH_ALEN];
4800 int path_idx = cb->args[2];
4801 int err;
4802
4803 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4804 if (err)
4805 return err;
4806
4807 if (!rdev->ops->dump_mpp) {
4808 err = -EOPNOTSUPP;
4809 goto out_err;
4810 }
4811
4812 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4813 err = -EOPNOTSUPP;
4814 goto out_err;
4815 }
4816
4817 while (1) {
4818 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4819 mpp, &pinfo);
4820 if (err == -ENOENT)
4821 break;
4822 if (err)
4823 goto out_err;
4824
4825 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4826 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4827 wdev->netdev, dst, mpp,
4828 &pinfo) < 0)
4829 goto out;
4830
4831 path_idx++;
4832 }
4833
4834 out:
4835 cb->args[2] = path_idx;
4836 err = skb->len;
4837 out_err:
4838 nl80211_finish_wdev_dump(rdev);
4839 return err;
4840 }
4841
4842 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4843 {
4844 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4845 struct net_device *dev = info->user_ptr[1];
4846 struct wireless_dev *wdev = dev->ieee80211_ptr;
4847 struct bss_parameters params;
4848 int err;
4849
4850 memset(&params, 0, sizeof(params));
4851 /* default to not changing parameters */
4852 params.use_cts_prot = -1;
4853 params.use_short_preamble = -1;
4854 params.use_short_slot_time = -1;
4855 params.ap_isolate = -1;
4856 params.ht_opmode = -1;
4857 params.p2p_ctwindow = -1;
4858 params.p2p_opp_ps = -1;
4859
4860 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4861 params.use_cts_prot =
4862 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4863 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4864 params.use_short_preamble =
4865 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4866 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4867 params.use_short_slot_time =
4868 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4869 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4870 params.basic_rates =
4871 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4872 params.basic_rates_len =
4873 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4874 }
4875 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4876 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4877 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4878 params.ht_opmode =
4879 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4880
4881 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4882 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4883 return -EINVAL;
4884 params.p2p_ctwindow =
4885 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4886 if (params.p2p_ctwindow < 0)
4887 return -EINVAL;
4888 if (params.p2p_ctwindow != 0 &&
4889 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4890 return -EINVAL;
4891 }
4892
4893 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4894 u8 tmp;
4895
4896 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4897 return -EINVAL;
4898 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4899 if (tmp > 1)
4900 return -EINVAL;
4901 params.p2p_opp_ps = tmp;
4902 if (params.p2p_opp_ps &&
4903 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4904 return -EINVAL;
4905 }
4906
4907 if (!rdev->ops->change_bss)
4908 return -EOPNOTSUPP;
4909
4910 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4911 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4912 return -EOPNOTSUPP;
4913
4914 wdev_lock(wdev);
4915 err = rdev_change_bss(rdev, dev, &params);
4916 wdev_unlock(wdev);
4917
4918 return err;
4919 }
4920
4921 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4922 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4923 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4924 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4925 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4926 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4927 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4928 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4929 };
4930
4931 static int parse_reg_rule(struct nlattr *tb[],
4932 struct ieee80211_reg_rule *reg_rule)
4933 {
4934 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4935 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4936
4937 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4938 return -EINVAL;
4939 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4940 return -EINVAL;
4941 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4942 return -EINVAL;
4943 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4944 return -EINVAL;
4945 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4946 return -EINVAL;
4947
4948 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4949
4950 freq_range->start_freq_khz =
4951 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4952 freq_range->end_freq_khz =
4953 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4954 freq_range->max_bandwidth_khz =
4955 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4956
4957 power_rule->max_eirp =
4958 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4959
4960 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4961 power_rule->max_antenna_gain =
4962 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4963
4964 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4965 reg_rule->dfs_cac_ms =
4966 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4967
4968 return 0;
4969 }
4970
4971 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4972 {
4973 char *data = NULL;
4974 bool is_indoor;
4975 enum nl80211_user_reg_hint_type user_reg_hint_type;
4976 u32 owner_nlportid;
4977
4978
4979 /*
4980 * You should only get this when cfg80211 hasn't yet initialized
4981 * completely when built-in to the kernel right between the time
4982 * window between nl80211_init() and regulatory_init(), if that is
4983 * even possible.
4984 */
4985 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4986 return -EINPROGRESS;
4987
4988 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4989 user_reg_hint_type =
4990 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4991 else
4992 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4993
4994 switch (user_reg_hint_type) {
4995 case NL80211_USER_REG_HINT_USER:
4996 case NL80211_USER_REG_HINT_CELL_BASE:
4997 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4998 return -EINVAL;
4999
5000 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5001 return regulatory_hint_user(data, user_reg_hint_type);
5002 case NL80211_USER_REG_HINT_INDOOR:
5003 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5004 owner_nlportid = info->snd_portid;
5005 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5006 } else {
5007 owner_nlportid = 0;
5008 is_indoor = true;
5009 }
5010
5011 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5012 default:
5013 return -EINVAL;
5014 }
5015 }
5016
5017 static int nl80211_get_mesh_config(struct sk_buff *skb,
5018 struct genl_info *info)
5019 {
5020 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5021 struct net_device *dev = info->user_ptr[1];
5022 struct wireless_dev *wdev = dev->ieee80211_ptr;
5023 struct mesh_config cur_params;
5024 int err = 0;
5025 void *hdr;
5026 struct nlattr *pinfoattr;
5027 struct sk_buff *msg;
5028
5029 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5030 return -EOPNOTSUPP;
5031
5032 if (!rdev->ops->get_mesh_config)
5033 return -EOPNOTSUPP;
5034
5035 wdev_lock(wdev);
5036 /* If not connected, get default parameters */
5037 if (!wdev->mesh_id_len)
5038 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5039 else
5040 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5041 wdev_unlock(wdev);
5042
5043 if (err)
5044 return err;
5045
5046 /* Draw up a netlink message to send back */
5047 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5048 if (!msg)
5049 return -ENOMEM;
5050 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5051 NL80211_CMD_GET_MESH_CONFIG);
5052 if (!hdr)
5053 goto out;
5054 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5055 if (!pinfoattr)
5056 goto nla_put_failure;
5057 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5058 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5059 cur_params.dot11MeshRetryTimeout) ||
5060 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5061 cur_params.dot11MeshConfirmTimeout) ||
5062 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5063 cur_params.dot11MeshHoldingTimeout) ||
5064 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5065 cur_params.dot11MeshMaxPeerLinks) ||
5066 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5067 cur_params.dot11MeshMaxRetries) ||
5068 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5069 cur_params.dot11MeshTTL) ||
5070 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5071 cur_params.element_ttl) ||
5072 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5073 cur_params.auto_open_plinks) ||
5074 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5075 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5076 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5077 cur_params.dot11MeshHWMPmaxPREQretries) ||
5078 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5079 cur_params.path_refresh_time) ||
5080 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5081 cur_params.min_discovery_timeout) ||
5082 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5083 cur_params.dot11MeshHWMPactivePathTimeout) ||
5084 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5085 cur_params.dot11MeshHWMPpreqMinInterval) ||
5086 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5087 cur_params.dot11MeshHWMPperrMinInterval) ||
5088 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5089 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5090 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5091 cur_params.dot11MeshHWMPRootMode) ||
5092 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5093 cur_params.dot11MeshHWMPRannInterval) ||
5094 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5095 cur_params.dot11MeshGateAnnouncementProtocol) ||
5096 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5097 cur_params.dot11MeshForwarding) ||
5098 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5099 cur_params.rssi_threshold) ||
5100 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5101 cur_params.ht_opmode) ||
5102 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5103 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5104 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5105 cur_params.dot11MeshHWMProotInterval) ||
5106 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5107 cur_params.dot11MeshHWMPconfirmationInterval) ||
5108 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5109 cur_params.power_mode) ||
5110 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5111 cur_params.dot11MeshAwakeWindowDuration) ||
5112 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5113 cur_params.plink_timeout))
5114 goto nla_put_failure;
5115 nla_nest_end(msg, pinfoattr);
5116 genlmsg_end(msg, hdr);
5117 return genlmsg_reply(msg, info);
5118
5119 nla_put_failure:
5120 genlmsg_cancel(msg, hdr);
5121 out:
5122 nlmsg_free(msg);
5123 return -ENOBUFS;
5124 }
5125
5126 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5127 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5128 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5129 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5130 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5131 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5132 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5133 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5134 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5135 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5136 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5137 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5138 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5139 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5140 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5141 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5142 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5143 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5144 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5145 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5146 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5147 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5148 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5149 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5150 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5151 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5152 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5153 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5154 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5155 };
5156
5157 static const struct nla_policy
5158 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5159 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5160 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5161 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5162 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5163 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5164 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5165 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5166 .len = IEEE80211_MAX_DATA_LEN },
5167 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5168 };
5169
5170 static int nl80211_parse_mesh_config(struct genl_info *info,
5171 struct mesh_config *cfg,
5172 u32 *mask_out)
5173 {
5174 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5175 u32 mask = 0;
5176
5177 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5178 do { \
5179 if (tb[attr]) { \
5180 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5181 return -EINVAL; \
5182 cfg->param = fn(tb[attr]); \
5183 mask |= (1 << (attr - 1)); \
5184 } \
5185 } while (0)
5186
5187
5188 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5189 return -EINVAL;
5190 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5191 info->attrs[NL80211_ATTR_MESH_CONFIG],
5192 nl80211_meshconf_params_policy))
5193 return -EINVAL;
5194
5195 /* This makes sure that there aren't more than 32 mesh config
5196 * parameters (otherwise our bitfield scheme would not work.) */
5197 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5198
5199 /* Fill in the params struct */
5200 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5201 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5202 nla_get_u16);
5203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5204 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5205 nla_get_u16);
5206 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5207 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5208 nla_get_u16);
5209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5210 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5211 nla_get_u16);
5212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5213 mask, NL80211_MESHCONF_MAX_RETRIES,
5214 nla_get_u8);
5215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5216 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5217 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5218 mask, NL80211_MESHCONF_ELEMENT_TTL,
5219 nla_get_u8);
5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5221 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5222 nla_get_u8);
5223 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5224 1, 255, mask,
5225 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5226 nla_get_u32);
5227 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5228 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5229 nla_get_u8);
5230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5231 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5232 nla_get_u32);
5233 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5234 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5235 nla_get_u16);
5236 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5237 1, 65535, mask,
5238 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5239 nla_get_u32);
5240 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5241 1, 65535, mask,
5242 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5243 nla_get_u16);
5244 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5245 1, 65535, mask,
5246 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5247 nla_get_u16);
5248 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5249 dot11MeshHWMPnetDiameterTraversalTime,
5250 1, 65535, mask,
5251 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5252 nla_get_u16);
5253 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5254 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5255 nla_get_u8);
5256 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5257 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5258 nla_get_u16);
5259 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5260 dot11MeshGateAnnouncementProtocol, 0, 1,
5261 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5262 nla_get_u8);
5263 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5264 mask, NL80211_MESHCONF_FORWARDING,
5265 nla_get_u8);
5266 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5267 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5268 nla_get_s32);
5269 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5270 mask, NL80211_MESHCONF_HT_OPMODE,
5271 nla_get_u16);
5272 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5273 1, 65535, mask,
5274 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5275 nla_get_u32);
5276 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5277 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5278 nla_get_u16);
5279 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5280 dot11MeshHWMPconfirmationInterval,
5281 1, 65535, mask,
5282 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5283 nla_get_u16);
5284 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5285 NL80211_MESH_POWER_ACTIVE,
5286 NL80211_MESH_POWER_MAX,
5287 mask, NL80211_MESHCONF_POWER_MODE,
5288 nla_get_u32);
5289 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5290 0, 65535, mask,
5291 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5292 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5293 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5294 nla_get_u32);
5295 if (mask_out)
5296 *mask_out = mask;
5297
5298 return 0;
5299
5300 #undef FILL_IN_MESH_PARAM_IF_SET
5301 }
5302
5303 static int nl80211_parse_mesh_setup(struct genl_info *info,
5304 struct mesh_setup *setup)
5305 {
5306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5307 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5308
5309 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5310 return -EINVAL;
5311 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5312 info->attrs[NL80211_ATTR_MESH_SETUP],
5313 nl80211_mesh_setup_params_policy))
5314 return -EINVAL;
5315
5316 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5317 setup->sync_method =
5318 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5319 IEEE80211_SYNC_METHOD_VENDOR :
5320 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5321
5322 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5323 setup->path_sel_proto =
5324 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5325 IEEE80211_PATH_PROTOCOL_VENDOR :
5326 IEEE80211_PATH_PROTOCOL_HWMP;
5327
5328 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5329 setup->path_metric =
5330 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5331 IEEE80211_PATH_METRIC_VENDOR :
5332 IEEE80211_PATH_METRIC_AIRTIME;
5333
5334
5335 if (tb[NL80211_MESH_SETUP_IE]) {
5336 struct nlattr *ieattr =
5337 tb[NL80211_MESH_SETUP_IE];
5338 if (!is_valid_ie_attr(ieattr))
5339 return -EINVAL;
5340 setup->ie = nla_data(ieattr);
5341 setup->ie_len = nla_len(ieattr);
5342 }
5343 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5344 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5345 return -EINVAL;
5346 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5347 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5348 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5349 if (setup->is_secure)
5350 setup->user_mpm = true;
5351
5352 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5353 if (!setup->user_mpm)
5354 return -EINVAL;
5355 setup->auth_id =
5356 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5357 }
5358
5359 return 0;
5360 }
5361
5362 static int nl80211_update_mesh_config(struct sk_buff *skb,
5363 struct genl_info *info)
5364 {
5365 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5366 struct net_device *dev = info->user_ptr[1];
5367 struct wireless_dev *wdev = dev->ieee80211_ptr;
5368 struct mesh_config cfg;
5369 u32 mask;
5370 int err;
5371
5372 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5373 return -EOPNOTSUPP;
5374
5375 if (!rdev->ops->update_mesh_config)
5376 return -EOPNOTSUPP;
5377
5378 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5379 if (err)
5380 return err;
5381
5382 wdev_lock(wdev);
5383 if (!wdev->mesh_id_len)
5384 err = -ENOLINK;
5385
5386 if (!err)
5387 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5388
5389 wdev_unlock(wdev);
5390
5391 return err;
5392 }
5393
5394 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5395 struct sk_buff *msg)
5396 {
5397 struct nlattr *nl_reg_rules;
5398 unsigned int i;
5399
5400 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5401 (regdom->dfs_region &&
5402 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5403 goto nla_put_failure;
5404
5405 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5406 if (!nl_reg_rules)
5407 goto nla_put_failure;
5408
5409 for (i = 0; i < regdom->n_reg_rules; i++) {
5410 struct nlattr *nl_reg_rule;
5411 const struct ieee80211_reg_rule *reg_rule;
5412 const struct ieee80211_freq_range *freq_range;
5413 const struct ieee80211_power_rule *power_rule;
5414 unsigned int max_bandwidth_khz;
5415
5416 reg_rule = &regdom->reg_rules[i];
5417 freq_range = &reg_rule->freq_range;
5418 power_rule = &reg_rule->power_rule;
5419
5420 nl_reg_rule = nla_nest_start(msg, i);
5421 if (!nl_reg_rule)
5422 goto nla_put_failure;
5423
5424 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5425 if (!max_bandwidth_khz)
5426 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5427 reg_rule);
5428
5429 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5430 reg_rule->flags) ||
5431 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5432 freq_range->start_freq_khz) ||
5433 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5434 freq_range->end_freq_khz) ||
5435 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5436 max_bandwidth_khz) ||
5437 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5438 power_rule->max_antenna_gain) ||
5439 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5440 power_rule->max_eirp) ||
5441 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5442 reg_rule->dfs_cac_ms))
5443 goto nla_put_failure;
5444
5445 nla_nest_end(msg, nl_reg_rule);
5446 }
5447
5448 nla_nest_end(msg, nl_reg_rules);
5449 return 0;
5450
5451 nla_put_failure:
5452 return -EMSGSIZE;
5453 }
5454
5455 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5456 {
5457 const struct ieee80211_regdomain *regdom = NULL;
5458 struct cfg80211_registered_device *rdev;
5459 struct wiphy *wiphy = NULL;
5460 struct sk_buff *msg;
5461 void *hdr;
5462
5463 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5464 if (!msg)
5465 return -ENOBUFS;
5466
5467 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5468 NL80211_CMD_GET_REG);
5469 if (!hdr)
5470 goto put_failure;
5471
5472 if (info->attrs[NL80211_ATTR_WIPHY]) {
5473 bool self_managed;
5474
5475 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5476 if (IS_ERR(rdev)) {
5477 nlmsg_free(msg);
5478 return PTR_ERR(rdev);
5479 }
5480
5481 wiphy = &rdev->wiphy;
5482 self_managed = wiphy->regulatory_flags &
5483 REGULATORY_WIPHY_SELF_MANAGED;
5484 regdom = get_wiphy_regdom(wiphy);
5485
5486 /* a self-managed-reg device must have a private regdom */
5487 if (WARN_ON(!regdom && self_managed)) {
5488 nlmsg_free(msg);
5489 return -EINVAL;
5490 }
5491
5492 if (regdom &&
5493 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5494 goto nla_put_failure;
5495 }
5496
5497 if (!wiphy && reg_last_request_cell_base() &&
5498 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5499 NL80211_USER_REG_HINT_CELL_BASE))
5500 goto nla_put_failure;
5501
5502 rcu_read_lock();
5503
5504 if (!regdom)
5505 regdom = rcu_dereference(cfg80211_regdomain);
5506
5507 if (nl80211_put_regdom(regdom, msg))
5508 goto nla_put_failure_rcu;
5509
5510 rcu_read_unlock();
5511
5512 genlmsg_end(msg, hdr);
5513 return genlmsg_reply(msg, info);
5514
5515 nla_put_failure_rcu:
5516 rcu_read_unlock();
5517 nla_put_failure:
5518 genlmsg_cancel(msg, hdr);
5519 put_failure:
5520 nlmsg_free(msg);
5521 return -EMSGSIZE;
5522 }
5523
5524 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5525 u32 seq, int flags, struct wiphy *wiphy,
5526 const struct ieee80211_regdomain *regdom)
5527 {
5528 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5529 NL80211_CMD_GET_REG);
5530
5531 if (!hdr)
5532 return -1;
5533
5534 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5535
5536 if (nl80211_put_regdom(regdom, msg))
5537 goto nla_put_failure;
5538
5539 if (!wiphy && reg_last_request_cell_base() &&
5540 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5541 NL80211_USER_REG_HINT_CELL_BASE))
5542 goto nla_put_failure;
5543
5544 if (wiphy &&
5545 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5546 goto nla_put_failure;
5547
5548 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5549 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5550 goto nla_put_failure;
5551
5552 genlmsg_end(msg, hdr);
5553 return 0;
5554
5555 nla_put_failure:
5556 genlmsg_cancel(msg, hdr);
5557 return -EMSGSIZE;
5558 }
5559
5560 static int nl80211_get_reg_dump(struct sk_buff *skb,
5561 struct netlink_callback *cb)
5562 {
5563 const struct ieee80211_regdomain *regdom = NULL;
5564 struct cfg80211_registered_device *rdev;
5565 int err, reg_idx, start = cb->args[2];
5566
5567 rtnl_lock();
5568
5569 if (cfg80211_regdomain && start == 0) {
5570 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5571 NLM_F_MULTI, NULL,
5572 rtnl_dereference(cfg80211_regdomain));
5573 if (err < 0)
5574 goto out_err;
5575 }
5576
5577 /* the global regdom is idx 0 */
5578 reg_idx = 1;
5579 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5580 regdom = get_wiphy_regdom(&rdev->wiphy);
5581 if (!regdom)
5582 continue;
5583
5584 if (++reg_idx <= start)
5585 continue;
5586
5587 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5588 NLM_F_MULTI, &rdev->wiphy, regdom);
5589 if (err < 0) {
5590 reg_idx--;
5591 break;
5592 }
5593 }
5594
5595 cb->args[2] = reg_idx;
5596 err = skb->len;
5597 out_err:
5598 rtnl_unlock();
5599 return err;
5600 }
5601
5602 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5603 {
5604 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5605 struct nlattr *nl_reg_rule;
5606 char *alpha2;
5607 int rem_reg_rules, r;
5608 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5609 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5610 struct ieee80211_regdomain *rd;
5611
5612 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5613 return -EINVAL;
5614
5615 if (!info->attrs[NL80211_ATTR_REG_RULES])
5616 return -EINVAL;
5617
5618 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5619
5620 if (info->attrs[NL80211_ATTR_DFS_REGION])
5621 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5622
5623 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5624 rem_reg_rules) {
5625 num_rules++;
5626 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5627 return -EINVAL;
5628 }
5629
5630 if (!reg_is_valid_request(alpha2))
5631 return -EINVAL;
5632
5633 size_of_regd = sizeof(struct ieee80211_regdomain) +
5634 num_rules * sizeof(struct ieee80211_reg_rule);
5635
5636 rd = kzalloc(size_of_regd, GFP_KERNEL);
5637 if (!rd)
5638 return -ENOMEM;
5639
5640 rd->n_reg_rules = num_rules;
5641 rd->alpha2[0] = alpha2[0];
5642 rd->alpha2[1] = alpha2[1];
5643
5644 /*
5645 * Disable DFS master mode if the DFS region was
5646 * not supported or known on this kernel.
5647 */
5648 if (reg_supported_dfs_region(dfs_region))
5649 rd->dfs_region = dfs_region;
5650
5651 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5652 rem_reg_rules) {
5653 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5654 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5655 reg_rule_policy);
5656 if (r)
5657 goto bad_reg;
5658 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5659 if (r)
5660 goto bad_reg;
5661
5662 rule_idx++;
5663
5664 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5665 r = -EINVAL;
5666 goto bad_reg;
5667 }
5668 }
5669
5670 r = set_regdom(rd, REGD_SOURCE_CRDA);
5671 /* set_regdom took ownership */
5672 rd = NULL;
5673
5674 bad_reg:
5675 kfree(rd);
5676 return r;
5677 }
5678
5679 static int validate_scan_freqs(struct nlattr *freqs)
5680 {
5681 struct nlattr *attr1, *attr2;
5682 int n_channels = 0, tmp1, tmp2;
5683
5684 nla_for_each_nested(attr1, freqs, tmp1) {
5685 n_channels++;
5686 /*
5687 * Some hardware has a limited channel list for
5688 * scanning, and it is pretty much nonsensical
5689 * to scan for a channel twice, so disallow that
5690 * and don't require drivers to check that the
5691 * channel list they get isn't longer than what
5692 * they can scan, as long as they can scan all
5693 * the channels they registered at once.
5694 */
5695 nla_for_each_nested(attr2, freqs, tmp2)
5696 if (attr1 != attr2 &&
5697 nla_get_u32(attr1) == nla_get_u32(attr2))
5698 return 0;
5699 }
5700
5701 return n_channels;
5702 }
5703
5704 static int nl80211_parse_random_mac(struct nlattr **attrs,
5705 u8 *mac_addr, u8 *mac_addr_mask)
5706 {
5707 int i;
5708
5709 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5710 eth_zero_addr(mac_addr);
5711 eth_zero_addr(mac_addr_mask);
5712 mac_addr[0] = 0x2;
5713 mac_addr_mask[0] = 0x3;
5714
5715 return 0;
5716 }
5717
5718 /* need both or none */
5719 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5720 return -EINVAL;
5721
5722 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5723 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5724
5725 /* don't allow or configure an mcast address */
5726 if (!is_multicast_ether_addr(mac_addr_mask) ||
5727 is_multicast_ether_addr(mac_addr))
5728 return -EINVAL;
5729
5730 /*
5731 * allow users to pass a MAC address that has bits set outside
5732 * of the mask, but don't bother drivers with having to deal
5733 * with such bits
5734 */
5735 for (i = 0; i < ETH_ALEN; i++)
5736 mac_addr[i] &= mac_addr_mask[i];
5737
5738 return 0;
5739 }
5740
5741 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5742 {
5743 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5744 struct wireless_dev *wdev = info->user_ptr[1];
5745 struct cfg80211_scan_request *request;
5746 struct nlattr *attr;
5747 struct wiphy *wiphy;
5748 int err, tmp, n_ssids = 0, n_channels, i;
5749 size_t ie_len;
5750
5751 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5752 return -EINVAL;
5753
5754 wiphy = &rdev->wiphy;
5755
5756 if (!rdev->ops->scan)
5757 return -EOPNOTSUPP;
5758
5759 if (rdev->scan_req || rdev->scan_msg) {
5760 err = -EBUSY;
5761 goto unlock;
5762 }
5763
5764 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5765 n_channels = validate_scan_freqs(
5766 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5767 if (!n_channels) {
5768 err = -EINVAL;
5769 goto unlock;
5770 }
5771 } else {
5772 n_channels = ieee80211_get_num_supported_channels(wiphy);
5773 }
5774
5775 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5776 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5777 n_ssids++;
5778
5779 if (n_ssids > wiphy->max_scan_ssids) {
5780 err = -EINVAL;
5781 goto unlock;
5782 }
5783
5784 if (info->attrs[NL80211_ATTR_IE])
5785 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5786 else
5787 ie_len = 0;
5788
5789 if (ie_len > wiphy->max_scan_ie_len) {
5790 err = -EINVAL;
5791 goto unlock;
5792 }
5793
5794 request = kzalloc(sizeof(*request)
5795 + sizeof(*request->ssids) * n_ssids
5796 + sizeof(*request->channels) * n_channels
5797 + ie_len, GFP_KERNEL);
5798 if (!request) {
5799 err = -ENOMEM;
5800 goto unlock;
5801 }
5802
5803 if (n_ssids)
5804 request->ssids = (void *)&request->channels[n_channels];
5805 request->n_ssids = n_ssids;
5806 if (ie_len) {
5807 if (n_ssids)
5808 request->ie = (void *)(request->ssids + n_ssids);
5809 else
5810 request->ie = (void *)(request->channels + n_channels);
5811 }
5812
5813 i = 0;
5814 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5815 /* user specified, bail out if channel not found */
5816 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5817 struct ieee80211_channel *chan;
5818
5819 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5820
5821 if (!chan) {
5822 err = -EINVAL;
5823 goto out_free;
5824 }
5825
5826 /* ignore disabled channels */
5827 if (chan->flags & IEEE80211_CHAN_DISABLED)
5828 continue;
5829
5830 request->channels[i] = chan;
5831 i++;
5832 }
5833 } else {
5834 enum ieee80211_band band;
5835
5836 /* all channels */
5837 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5838 int j;
5839 if (!wiphy->bands[band])
5840 continue;
5841 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5842 struct ieee80211_channel *chan;
5843
5844 chan = &wiphy->bands[band]->channels[j];
5845
5846 if (chan->flags & IEEE80211_CHAN_DISABLED)
5847 continue;
5848
5849 request->channels[i] = chan;
5850 i++;
5851 }
5852 }
5853 }
5854
5855 if (!i) {
5856 err = -EINVAL;
5857 goto out_free;
5858 }
5859
5860 request->n_channels = i;
5861
5862 i = 0;
5863 if (n_ssids) {
5864 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5865 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5866 err = -EINVAL;
5867 goto out_free;
5868 }
5869 request->ssids[i].ssid_len = nla_len(attr);
5870 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5871 i++;
5872 }
5873 }
5874
5875 if (info->attrs[NL80211_ATTR_IE]) {
5876 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5877 memcpy((void *)request->ie,
5878 nla_data(info->attrs[NL80211_ATTR_IE]),
5879 request->ie_len);
5880 }
5881
5882 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5883 if (wiphy->bands[i])
5884 request->rates[i] =
5885 (1 << wiphy->bands[i]->n_bitrates) - 1;
5886
5887 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5888 nla_for_each_nested(attr,
5889 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5890 tmp) {
5891 enum ieee80211_band band = nla_type(attr);
5892
5893 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5894 err = -EINVAL;
5895 goto out_free;
5896 }
5897
5898 if (!wiphy->bands[band])
5899 continue;
5900
5901 err = ieee80211_get_ratemask(wiphy->bands[band],
5902 nla_data(attr),
5903 nla_len(attr),
5904 &request->rates[band]);
5905 if (err)
5906 goto out_free;
5907 }
5908 }
5909
5910 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5911 request->flags = nla_get_u32(
5912 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5913 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5914 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5915 err = -EOPNOTSUPP;
5916 goto out_free;
5917 }
5918
5919 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5920 if (!(wiphy->features &
5921 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5922 err = -EOPNOTSUPP;
5923 goto out_free;
5924 }
5925
5926 if (wdev->current_bss) {
5927 err = -EOPNOTSUPP;
5928 goto out_free;
5929 }
5930
5931 err = nl80211_parse_random_mac(info->attrs,
5932 request->mac_addr,
5933 request->mac_addr_mask);
5934 if (err)
5935 goto out_free;
5936 }
5937 }
5938
5939 request->no_cck =
5940 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5941
5942 request->wdev = wdev;
5943 request->wiphy = &rdev->wiphy;
5944 request->scan_start = jiffies;
5945
5946 rdev->scan_req = request;
5947 err = rdev_scan(rdev, request);
5948
5949 if (!err) {
5950 nl80211_send_scan_start(rdev, wdev);
5951 if (wdev->netdev)
5952 dev_hold(wdev->netdev);
5953 } else {
5954 out_free:
5955 rdev->scan_req = NULL;
5956 kfree(request);
5957 }
5958
5959 unlock:
5960 return err;
5961 }
5962
5963 static struct cfg80211_sched_scan_request *
5964 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5965 struct nlattr **attrs)
5966 {
5967 struct cfg80211_sched_scan_request *request;
5968 struct nlattr *attr;
5969 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5970 u32 interval;
5971 enum ieee80211_band band;
5972 size_t ie_len;
5973 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5974 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5975
5976 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5977 return ERR_PTR(-EINVAL);
5978
5979 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5980 return ERR_PTR(-EINVAL);
5981
5982 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5983 if (interval == 0)
5984 return ERR_PTR(-EINVAL);
5985
5986 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5987 n_channels = validate_scan_freqs(
5988 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5989 if (!n_channels)
5990 return ERR_PTR(-EINVAL);
5991 } else {
5992 n_channels = ieee80211_get_num_supported_channels(wiphy);
5993 }
5994
5995 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5996 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5997 tmp)
5998 n_ssids++;
5999
6000 if (n_ssids > wiphy->max_sched_scan_ssids)
6001 return ERR_PTR(-EINVAL);
6002
6003 /*
6004 * First, count the number of 'real' matchsets. Due to an issue with
6005 * the old implementation, matchsets containing only the RSSI attribute
6006 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6007 * RSSI for all matchsets, rather than their own matchset for reporting
6008 * all APs with a strong RSSI. This is needed to be compatible with
6009 * older userspace that treated a matchset with only the RSSI as the
6010 * global RSSI for all other matchsets - if there are other matchsets.
6011 */
6012 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6013 nla_for_each_nested(attr,
6014 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6015 tmp) {
6016 struct nlattr *rssi;
6017
6018 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6019 nla_data(attr), nla_len(attr),
6020 nl80211_match_policy);
6021 if (err)
6022 return ERR_PTR(err);
6023 /* add other standalone attributes here */
6024 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6025 n_match_sets++;
6026 continue;
6027 }
6028 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6029 if (rssi)
6030 default_match_rssi = nla_get_s32(rssi);
6031 }
6032 }
6033
6034 /* However, if there's no other matchset, add the RSSI one */
6035 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6036 n_match_sets = 1;
6037
6038 if (n_match_sets > wiphy->max_match_sets)
6039 return ERR_PTR(-EINVAL);
6040
6041 if (attrs[NL80211_ATTR_IE])
6042 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6043 else
6044 ie_len = 0;
6045
6046 if (ie_len > wiphy->max_sched_scan_ie_len)
6047 return ERR_PTR(-EINVAL);
6048
6049 request = kzalloc(sizeof(*request)
6050 + sizeof(*request->ssids) * n_ssids
6051 + sizeof(*request->match_sets) * n_match_sets
6052 + sizeof(*request->channels) * n_channels
6053 + ie_len, GFP_KERNEL);
6054 if (!request)
6055 return ERR_PTR(-ENOMEM);
6056
6057 if (n_ssids)
6058 request->ssids = (void *)&request->channels[n_channels];
6059 request->n_ssids = n_ssids;
6060 if (ie_len) {
6061 if (n_ssids)
6062 request->ie = (void *)(request->ssids + n_ssids);
6063 else
6064 request->ie = (void *)(request->channels + n_channels);
6065 }
6066
6067 if (n_match_sets) {
6068 if (request->ie)
6069 request->match_sets = (void *)(request->ie + ie_len);
6070 else if (n_ssids)
6071 request->match_sets =
6072 (void *)(request->ssids + n_ssids);
6073 else
6074 request->match_sets =
6075 (void *)(request->channels + n_channels);
6076 }
6077 request->n_match_sets = n_match_sets;
6078
6079 i = 0;
6080 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6081 /* user specified, bail out if channel not found */
6082 nla_for_each_nested(attr,
6083 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6084 tmp) {
6085 struct ieee80211_channel *chan;
6086
6087 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6088
6089 if (!chan) {
6090 err = -EINVAL;
6091 goto out_free;
6092 }
6093
6094 /* ignore disabled channels */
6095 if (chan->flags & IEEE80211_CHAN_DISABLED)
6096 continue;
6097
6098 request->channels[i] = chan;
6099 i++;
6100 }
6101 } else {
6102 /* all channels */
6103 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6104 int j;
6105 if (!wiphy->bands[band])
6106 continue;
6107 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6108 struct ieee80211_channel *chan;
6109
6110 chan = &wiphy->bands[band]->channels[j];
6111
6112 if (chan->flags & IEEE80211_CHAN_DISABLED)
6113 continue;
6114
6115 request->channels[i] = chan;
6116 i++;
6117 }
6118 }
6119 }
6120
6121 if (!i) {
6122 err = -EINVAL;
6123 goto out_free;
6124 }
6125
6126 request->n_channels = i;
6127
6128 i = 0;
6129 if (n_ssids) {
6130 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6131 tmp) {
6132 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6133 err = -EINVAL;
6134 goto out_free;
6135 }
6136 request->ssids[i].ssid_len = nla_len(attr);
6137 memcpy(request->ssids[i].ssid, nla_data(attr),
6138 nla_len(attr));
6139 i++;
6140 }
6141 }
6142
6143 i = 0;
6144 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6145 nla_for_each_nested(attr,
6146 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6147 tmp) {
6148 struct nlattr *ssid, *rssi;
6149
6150 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6151 nla_data(attr), nla_len(attr),
6152 nl80211_match_policy);
6153 if (err)
6154 goto out_free;
6155 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6156 if (ssid) {
6157 if (WARN_ON(i >= n_match_sets)) {
6158 /* this indicates a programming error,
6159 * the loop above should have verified
6160 * things properly
6161 */
6162 err = -EINVAL;
6163 goto out_free;
6164 }
6165
6166 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6167 err = -EINVAL;
6168 goto out_free;
6169 }
6170 memcpy(request->match_sets[i].ssid.ssid,
6171 nla_data(ssid), nla_len(ssid));
6172 request->match_sets[i].ssid.ssid_len =
6173 nla_len(ssid);
6174 /* special attribute - old implemenation w/a */
6175 request->match_sets[i].rssi_thold =
6176 default_match_rssi;
6177 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6178 if (rssi)
6179 request->match_sets[i].rssi_thold =
6180 nla_get_s32(rssi);
6181 }
6182 i++;
6183 }
6184
6185 /* there was no other matchset, so the RSSI one is alone */
6186 if (i == 0 && n_match_sets)
6187 request->match_sets[0].rssi_thold = default_match_rssi;
6188
6189 request->min_rssi_thold = INT_MAX;
6190 for (i = 0; i < n_match_sets; i++)
6191 request->min_rssi_thold =
6192 min(request->match_sets[i].rssi_thold,
6193 request->min_rssi_thold);
6194 } else {
6195 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6196 }
6197
6198 if (ie_len) {
6199 request->ie_len = ie_len;
6200 memcpy((void *)request->ie,
6201 nla_data(attrs[NL80211_ATTR_IE]),
6202 request->ie_len);
6203 }
6204
6205 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6206 request->flags = nla_get_u32(
6207 attrs[NL80211_ATTR_SCAN_FLAGS]);
6208 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6209 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6210 err = -EOPNOTSUPP;
6211 goto out_free;
6212 }
6213
6214 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6215 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6216
6217 if (!wdev) /* must be net-detect */
6218 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6219
6220 if (!(wiphy->features & flg)) {
6221 err = -EOPNOTSUPP;
6222 goto out_free;
6223 }
6224
6225 if (wdev && wdev->current_bss) {
6226 err = -EOPNOTSUPP;
6227 goto out_free;
6228 }
6229
6230 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6231 request->mac_addr_mask);
6232 if (err)
6233 goto out_free;
6234 }
6235 }
6236
6237 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6238 request->delay =
6239 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6240
6241 request->interval = interval;
6242 request->scan_start = jiffies;
6243
6244 return request;
6245
6246 out_free:
6247 kfree(request);
6248 return ERR_PTR(err);
6249 }
6250
6251 static int nl80211_start_sched_scan(struct sk_buff *skb,
6252 struct genl_info *info)
6253 {
6254 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6255 struct net_device *dev = info->user_ptr[1];
6256 struct wireless_dev *wdev = dev->ieee80211_ptr;
6257 struct cfg80211_sched_scan_request *sched_scan_req;
6258 int err;
6259
6260 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6261 !rdev->ops->sched_scan_start)
6262 return -EOPNOTSUPP;
6263
6264 if (rdev->sched_scan_req)
6265 return -EINPROGRESS;
6266
6267 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6268 info->attrs);
6269
6270 err = PTR_ERR_OR_ZERO(sched_scan_req);
6271 if (err)
6272 goto out_err;
6273
6274 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6275 if (err)
6276 goto out_free;
6277
6278 sched_scan_req->dev = dev;
6279 sched_scan_req->wiphy = &rdev->wiphy;
6280
6281 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6282 sched_scan_req->owner_nlportid = info->snd_portid;
6283
6284 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6285
6286 nl80211_send_sched_scan(rdev, dev,
6287 NL80211_CMD_START_SCHED_SCAN);
6288 return 0;
6289
6290 out_free:
6291 kfree(sched_scan_req);
6292 out_err:
6293 return err;
6294 }
6295
6296 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6297 struct genl_info *info)
6298 {
6299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6300
6301 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6302 !rdev->ops->sched_scan_stop)
6303 return -EOPNOTSUPP;
6304
6305 return __cfg80211_stop_sched_scan(rdev, false);
6306 }
6307
6308 static int nl80211_start_radar_detection(struct sk_buff *skb,
6309 struct genl_info *info)
6310 {
6311 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6312 struct net_device *dev = info->user_ptr[1];
6313 struct wireless_dev *wdev = dev->ieee80211_ptr;
6314 struct cfg80211_chan_def chandef;
6315 enum nl80211_dfs_regions dfs_region;
6316 unsigned int cac_time_ms;
6317 int err;
6318
6319 dfs_region = reg_get_dfs_region(wdev->wiphy);
6320 if (dfs_region == NL80211_DFS_UNSET)
6321 return -EINVAL;
6322
6323 err = nl80211_parse_chandef(rdev, info, &chandef);
6324 if (err)
6325 return err;
6326
6327 if (netif_carrier_ok(dev))
6328 return -EBUSY;
6329
6330 if (wdev->cac_started)
6331 return -EBUSY;
6332
6333 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6334 wdev->iftype);
6335 if (err < 0)
6336 return err;
6337
6338 if (err == 0)
6339 return -EINVAL;
6340
6341 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6342 return -EINVAL;
6343
6344 if (!rdev->ops->start_radar_detection)
6345 return -EOPNOTSUPP;
6346
6347 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6348 if (WARN_ON(!cac_time_ms))
6349 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6350
6351 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6352 cac_time_ms);
6353 if (!err) {
6354 wdev->chandef = chandef;
6355 wdev->cac_started = true;
6356 wdev->cac_start_time = jiffies;
6357 wdev->cac_time_ms = cac_time_ms;
6358 }
6359 return err;
6360 }
6361
6362 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6363 {
6364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6365 struct net_device *dev = info->user_ptr[1];
6366 struct wireless_dev *wdev = dev->ieee80211_ptr;
6367 struct cfg80211_csa_settings params;
6368 /* csa_attrs is defined static to avoid waste of stack size - this
6369 * function is called under RTNL lock, so this should not be a problem.
6370 */
6371 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6372 int err;
6373 bool need_new_beacon = false;
6374 int len, i;
6375 u32 cs_count;
6376
6377 if (!rdev->ops->channel_switch ||
6378 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6379 return -EOPNOTSUPP;
6380
6381 switch (dev->ieee80211_ptr->iftype) {
6382 case NL80211_IFTYPE_AP:
6383 case NL80211_IFTYPE_P2P_GO:
6384 need_new_beacon = true;
6385
6386 /* useless if AP is not running */
6387 if (!wdev->beacon_interval)
6388 return -ENOTCONN;
6389 break;
6390 case NL80211_IFTYPE_ADHOC:
6391 if (!wdev->ssid_len)
6392 return -ENOTCONN;
6393 break;
6394 case NL80211_IFTYPE_MESH_POINT:
6395 if (!wdev->mesh_id_len)
6396 return -ENOTCONN;
6397 break;
6398 default:
6399 return -EOPNOTSUPP;
6400 }
6401
6402 memset(&params, 0, sizeof(params));
6403
6404 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6405 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6406 return -EINVAL;
6407
6408 /* only important for AP, IBSS and mesh create IEs internally */
6409 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6410 return -EINVAL;
6411
6412 /* Even though the attribute is u32, the specification says
6413 * u8, so let's make sure we don't overflow.
6414 */
6415 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6416 if (cs_count > 255)
6417 return -EINVAL;
6418
6419 params.count = cs_count;
6420
6421 if (!need_new_beacon)
6422 goto skip_beacons;
6423
6424 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6425 if (err)
6426 return err;
6427
6428 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6429 info->attrs[NL80211_ATTR_CSA_IES],
6430 nl80211_policy);
6431 if (err)
6432 return err;
6433
6434 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6435 if (err)
6436 return err;
6437
6438 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6439 return -EINVAL;
6440
6441 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6442 if (!len || (len % sizeof(u16)))
6443 return -EINVAL;
6444
6445 params.n_counter_offsets_beacon = len / sizeof(u16);
6446 if (rdev->wiphy.max_num_csa_counters &&
6447 (params.n_counter_offsets_beacon >
6448 rdev->wiphy.max_num_csa_counters))
6449 return -EINVAL;
6450
6451 params.counter_offsets_beacon =
6452 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6453
6454 /* sanity checks - counters should fit and be the same */
6455 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6456 u16 offset = params.counter_offsets_beacon[i];
6457
6458 if (offset >= params.beacon_csa.tail_len)
6459 return -EINVAL;
6460
6461 if (params.beacon_csa.tail[offset] != params.count)
6462 return -EINVAL;
6463 }
6464
6465 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6466 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6467 if (!len || (len % sizeof(u16)))
6468 return -EINVAL;
6469
6470 params.n_counter_offsets_presp = len / sizeof(u16);
6471 if (rdev->wiphy.max_num_csa_counters &&
6472 (params.n_counter_offsets_beacon >
6473 rdev->wiphy.max_num_csa_counters))
6474 return -EINVAL;
6475
6476 params.counter_offsets_presp =
6477 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6478
6479 /* sanity checks - counters should fit and be the same */
6480 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6481 u16 offset = params.counter_offsets_presp[i];
6482
6483 if (offset >= params.beacon_csa.probe_resp_len)
6484 return -EINVAL;
6485
6486 if (params.beacon_csa.probe_resp[offset] !=
6487 params.count)
6488 return -EINVAL;
6489 }
6490 }
6491
6492 skip_beacons:
6493 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6494 if (err)
6495 return err;
6496
6497 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6498 wdev->iftype))
6499 return -EINVAL;
6500
6501 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6502 &params.chandef,
6503 wdev->iftype);
6504 if (err < 0)
6505 return err;
6506
6507 if (err > 0)
6508 params.radar_required = true;
6509
6510 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6511 params.block_tx = true;
6512
6513 wdev_lock(wdev);
6514 err = rdev_channel_switch(rdev, dev, &params);
6515 wdev_unlock(wdev);
6516
6517 return err;
6518 }
6519
6520 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6521 u32 seq, int flags,
6522 struct cfg80211_registered_device *rdev,
6523 struct wireless_dev *wdev,
6524 struct cfg80211_internal_bss *intbss)
6525 {
6526 struct cfg80211_bss *res = &intbss->pub;
6527 const struct cfg80211_bss_ies *ies;
6528 void *hdr;
6529 struct nlattr *bss;
6530
6531 ASSERT_WDEV_LOCK(wdev);
6532
6533 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6534 NL80211_CMD_NEW_SCAN_RESULTS);
6535 if (!hdr)
6536 return -1;
6537
6538 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6539
6540 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6541 goto nla_put_failure;
6542 if (wdev->netdev &&
6543 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6544 goto nla_put_failure;
6545 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6546 goto nla_put_failure;
6547
6548 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6549 if (!bss)
6550 goto nla_put_failure;
6551 if ((!is_zero_ether_addr(res->bssid) &&
6552 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6553 goto nla_put_failure;
6554
6555 rcu_read_lock();
6556 /* indicate whether we have probe response data or not */
6557 if (rcu_access_pointer(res->proberesp_ies) &&
6558 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6559 goto fail_unlock_rcu;
6560
6561 /* this pointer prefers to be pointed to probe response data
6562 * but is always valid
6563 */
6564 ies = rcu_dereference(res->ies);
6565 if (ies) {
6566 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6567 goto fail_unlock_rcu;
6568 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6569 ies->len, ies->data))
6570 goto fail_unlock_rcu;
6571 }
6572
6573 /* and this pointer is always (unless driver didn't know) beacon data */
6574 ies = rcu_dereference(res->beacon_ies);
6575 if (ies && ies->from_beacon) {
6576 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6577 goto fail_unlock_rcu;
6578 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6579 ies->len, ies->data))
6580 goto fail_unlock_rcu;
6581 }
6582 rcu_read_unlock();
6583
6584 if (res->beacon_interval &&
6585 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6586 goto nla_put_failure;
6587 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6588 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6589 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6590 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6591 jiffies_to_msecs(jiffies - intbss->ts)))
6592 goto nla_put_failure;
6593
6594 switch (rdev->wiphy.signal_type) {
6595 case CFG80211_SIGNAL_TYPE_MBM:
6596 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6597 goto nla_put_failure;
6598 break;
6599 case CFG80211_SIGNAL_TYPE_UNSPEC:
6600 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6601 goto nla_put_failure;
6602 break;
6603 default:
6604 break;
6605 }
6606
6607 switch (wdev->iftype) {
6608 case NL80211_IFTYPE_P2P_CLIENT:
6609 case NL80211_IFTYPE_STATION:
6610 if (intbss == wdev->current_bss &&
6611 nla_put_u32(msg, NL80211_BSS_STATUS,
6612 NL80211_BSS_STATUS_ASSOCIATED))
6613 goto nla_put_failure;
6614 break;
6615 case NL80211_IFTYPE_ADHOC:
6616 if (intbss == wdev->current_bss &&
6617 nla_put_u32(msg, NL80211_BSS_STATUS,
6618 NL80211_BSS_STATUS_IBSS_JOINED))
6619 goto nla_put_failure;
6620 break;
6621 default:
6622 break;
6623 }
6624
6625 nla_nest_end(msg, bss);
6626
6627 genlmsg_end(msg, hdr);
6628 return 0;
6629
6630 fail_unlock_rcu:
6631 rcu_read_unlock();
6632 nla_put_failure:
6633 genlmsg_cancel(msg, hdr);
6634 return -EMSGSIZE;
6635 }
6636
6637 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6638 {
6639 struct cfg80211_registered_device *rdev;
6640 struct cfg80211_internal_bss *scan;
6641 struct wireless_dev *wdev;
6642 int start = cb->args[2], idx = 0;
6643 int err;
6644
6645 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6646 if (err)
6647 return err;
6648
6649 wdev_lock(wdev);
6650 spin_lock_bh(&rdev->bss_lock);
6651 cfg80211_bss_expire(rdev);
6652
6653 cb->seq = rdev->bss_generation;
6654
6655 list_for_each_entry(scan, &rdev->bss_list, list) {
6656 if (++idx <= start)
6657 continue;
6658 if (nl80211_send_bss(skb, cb,
6659 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6660 rdev, wdev, scan) < 0) {
6661 idx--;
6662 break;
6663 }
6664 }
6665
6666 spin_unlock_bh(&rdev->bss_lock);
6667 wdev_unlock(wdev);
6668
6669 cb->args[2] = idx;
6670 nl80211_finish_wdev_dump(rdev);
6671
6672 return skb->len;
6673 }
6674
6675 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6676 int flags, struct net_device *dev,
6677 bool allow_radio_stats,
6678 struct survey_info *survey)
6679 {
6680 void *hdr;
6681 struct nlattr *infoattr;
6682
6683 /* skip radio stats if userspace didn't request them */
6684 if (!survey->channel && !allow_radio_stats)
6685 return 0;
6686
6687 hdr = nl80211hdr_put(msg, portid, seq, flags,
6688 NL80211_CMD_NEW_SURVEY_RESULTS);
6689 if (!hdr)
6690 return -ENOMEM;
6691
6692 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6693 goto nla_put_failure;
6694
6695 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6696 if (!infoattr)
6697 goto nla_put_failure;
6698
6699 if (survey->channel &&
6700 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6701 survey->channel->center_freq))
6702 goto nla_put_failure;
6703
6704 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6705 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6706 goto nla_put_failure;
6707 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6708 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6709 goto nla_put_failure;
6710 if ((survey->filled & SURVEY_INFO_TIME) &&
6711 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6712 survey->time))
6713 goto nla_put_failure;
6714 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6715 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6716 survey->time_busy))
6717 goto nla_put_failure;
6718 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6719 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6720 survey->time_ext_busy))
6721 goto nla_put_failure;
6722 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6723 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6724 survey->time_rx))
6725 goto nla_put_failure;
6726 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6727 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6728 survey->time_tx))
6729 goto nla_put_failure;
6730 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6731 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6732 survey->time_scan))
6733 goto nla_put_failure;
6734
6735 nla_nest_end(msg, infoattr);
6736
6737 genlmsg_end(msg, hdr);
6738 return 0;
6739
6740 nla_put_failure:
6741 genlmsg_cancel(msg, hdr);
6742 return -EMSGSIZE;
6743 }
6744
6745 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6746 {
6747 struct survey_info survey;
6748 struct cfg80211_registered_device *rdev;
6749 struct wireless_dev *wdev;
6750 int survey_idx = cb->args[2];
6751 int res;
6752 bool radio_stats;
6753
6754 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6755 if (res)
6756 return res;
6757
6758 /* prepare_wdev_dump parsed the attributes */
6759 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6760
6761 if (!wdev->netdev) {
6762 res = -EINVAL;
6763 goto out_err;
6764 }
6765
6766 if (!rdev->ops->dump_survey) {
6767 res = -EOPNOTSUPP;
6768 goto out_err;
6769 }
6770
6771 while (1) {
6772 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6773 if (res == -ENOENT)
6774 break;
6775 if (res)
6776 goto out_err;
6777
6778 /* don't send disabled channels, but do send non-channel data */
6779 if (survey.channel &&
6780 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6781 survey_idx++;
6782 continue;
6783 }
6784
6785 if (nl80211_send_survey(skb,
6786 NETLINK_CB(cb->skb).portid,
6787 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6788 wdev->netdev, radio_stats, &survey) < 0)
6789 goto out;
6790 survey_idx++;
6791 }
6792
6793 out:
6794 cb->args[2] = survey_idx;
6795 res = skb->len;
6796 out_err:
6797 nl80211_finish_wdev_dump(rdev);
6798 return res;
6799 }
6800
6801 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6802 {
6803 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6804 NL80211_WPA_VERSION_2));
6805 }
6806
6807 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6808 {
6809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6810 struct net_device *dev = info->user_ptr[1];
6811 struct ieee80211_channel *chan;
6812 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6813 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6814 enum nl80211_auth_type auth_type;
6815 struct key_parse key;
6816 bool local_state_change;
6817
6818 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6819 return -EINVAL;
6820
6821 if (!info->attrs[NL80211_ATTR_MAC])
6822 return -EINVAL;
6823
6824 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6825 return -EINVAL;
6826
6827 if (!info->attrs[NL80211_ATTR_SSID])
6828 return -EINVAL;
6829
6830 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6831 return -EINVAL;
6832
6833 err = nl80211_parse_key(info, &key);
6834 if (err)
6835 return err;
6836
6837 if (key.idx >= 0) {
6838 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6839 return -EINVAL;
6840 if (!key.p.key || !key.p.key_len)
6841 return -EINVAL;
6842 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6843 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6844 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6845 key.p.key_len != WLAN_KEY_LEN_WEP104))
6846 return -EINVAL;
6847 if (key.idx > 4)
6848 return -EINVAL;
6849 } else {
6850 key.p.key_len = 0;
6851 key.p.key = NULL;
6852 }
6853
6854 if (key.idx >= 0) {
6855 int i;
6856 bool ok = false;
6857 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6858 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6859 ok = true;
6860 break;
6861 }
6862 }
6863 if (!ok)
6864 return -EINVAL;
6865 }
6866
6867 if (!rdev->ops->auth)
6868 return -EOPNOTSUPP;
6869
6870 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6871 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6872 return -EOPNOTSUPP;
6873
6874 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6875 chan = nl80211_get_valid_chan(&rdev->wiphy,
6876 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6877 if (!chan)
6878 return -EINVAL;
6879
6880 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6881 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6882
6883 if (info->attrs[NL80211_ATTR_IE]) {
6884 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6885 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6886 }
6887
6888 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6889 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6890 return -EINVAL;
6891
6892 if (auth_type == NL80211_AUTHTYPE_SAE &&
6893 !info->attrs[NL80211_ATTR_SAE_DATA])
6894 return -EINVAL;
6895
6896 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6897 if (auth_type != NL80211_AUTHTYPE_SAE)
6898 return -EINVAL;
6899 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6900 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6901 /* need to include at least Auth Transaction and Status Code */
6902 if (sae_data_len < 4)
6903 return -EINVAL;
6904 }
6905
6906 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6907
6908 /*
6909 * Since we no longer track auth state, ignore
6910 * requests to only change local state.
6911 */
6912 if (local_state_change)
6913 return 0;
6914
6915 wdev_lock(dev->ieee80211_ptr);
6916 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6917 ssid, ssid_len, ie, ie_len,
6918 key.p.key, key.p.key_len, key.idx,
6919 sae_data, sae_data_len);
6920 wdev_unlock(dev->ieee80211_ptr);
6921 return err;
6922 }
6923
6924 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6925 struct genl_info *info,
6926 struct cfg80211_crypto_settings *settings,
6927 int cipher_limit)
6928 {
6929 memset(settings, 0, sizeof(*settings));
6930
6931 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6932
6933 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6934 u16 proto;
6935 proto = nla_get_u16(
6936 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6937 settings->control_port_ethertype = cpu_to_be16(proto);
6938 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6939 proto != ETH_P_PAE)
6940 return -EINVAL;
6941 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6942 settings->control_port_no_encrypt = true;
6943 } else
6944 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6945
6946 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6947 void *data;
6948 int len, i;
6949
6950 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6951 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6952 settings->n_ciphers_pairwise = len / sizeof(u32);
6953
6954 if (len % sizeof(u32))
6955 return -EINVAL;
6956
6957 if (settings->n_ciphers_pairwise > cipher_limit)
6958 return -EINVAL;
6959
6960 memcpy(settings->ciphers_pairwise, data, len);
6961
6962 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6963 if (!cfg80211_supported_cipher_suite(
6964 &rdev->wiphy,
6965 settings->ciphers_pairwise[i]))
6966 return -EINVAL;
6967 }
6968
6969 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6970 settings->cipher_group =
6971 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6972 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6973 settings->cipher_group))
6974 return -EINVAL;
6975 }
6976
6977 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6978 settings->wpa_versions =
6979 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6980 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6981 return -EINVAL;
6982 }
6983
6984 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6985 void *data;
6986 int len;
6987
6988 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6989 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6990 settings->n_akm_suites = len / sizeof(u32);
6991
6992 if (len % sizeof(u32))
6993 return -EINVAL;
6994
6995 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6996 return -EINVAL;
6997
6998 memcpy(settings->akm_suites, data, len);
6999 }
7000
7001 return 0;
7002 }
7003
7004 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7005 {
7006 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7007 struct net_device *dev = info->user_ptr[1];
7008 struct ieee80211_channel *chan;
7009 struct cfg80211_assoc_request req = {};
7010 const u8 *bssid, *ssid;
7011 int err, ssid_len = 0;
7012
7013 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7014 return -EINVAL;
7015
7016 if (!info->attrs[NL80211_ATTR_MAC] ||
7017 !info->attrs[NL80211_ATTR_SSID] ||
7018 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7019 return -EINVAL;
7020
7021 if (!rdev->ops->assoc)
7022 return -EOPNOTSUPP;
7023
7024 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7025 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7026 return -EOPNOTSUPP;
7027
7028 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7029
7030 chan = nl80211_get_valid_chan(&rdev->wiphy,
7031 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7032 if (!chan)
7033 return -EINVAL;
7034
7035 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7036 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7037
7038 if (info->attrs[NL80211_ATTR_IE]) {
7039 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7040 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7041 }
7042
7043 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7044 enum nl80211_mfp mfp =
7045 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7046 if (mfp == NL80211_MFP_REQUIRED)
7047 req.use_mfp = true;
7048 else if (mfp != NL80211_MFP_NO)
7049 return -EINVAL;
7050 }
7051
7052 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7053 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7054
7055 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7056 req.flags |= ASSOC_REQ_DISABLE_HT;
7057
7058 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7059 memcpy(&req.ht_capa_mask,
7060 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7061 sizeof(req.ht_capa_mask));
7062
7063 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7064 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7065 return -EINVAL;
7066 memcpy(&req.ht_capa,
7067 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7068 sizeof(req.ht_capa));
7069 }
7070
7071 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7072 req.flags |= ASSOC_REQ_DISABLE_VHT;
7073
7074 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7075 memcpy(&req.vht_capa_mask,
7076 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7077 sizeof(req.vht_capa_mask));
7078
7079 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7080 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7081 return -EINVAL;
7082 memcpy(&req.vht_capa,
7083 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7084 sizeof(req.vht_capa));
7085 }
7086
7087 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7088 if (!(rdev->wiphy.features &
7089 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7090 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7091 return -EINVAL;
7092 req.flags |= ASSOC_REQ_USE_RRM;
7093 }
7094
7095 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7096 if (!err) {
7097 wdev_lock(dev->ieee80211_ptr);
7098 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7099 ssid, ssid_len, &req);
7100 wdev_unlock(dev->ieee80211_ptr);
7101 }
7102
7103 return err;
7104 }
7105
7106 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7107 {
7108 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7109 struct net_device *dev = info->user_ptr[1];
7110 const u8 *ie = NULL, *bssid;
7111 int ie_len = 0, err;
7112 u16 reason_code;
7113 bool local_state_change;
7114
7115 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7116 return -EINVAL;
7117
7118 if (!info->attrs[NL80211_ATTR_MAC])
7119 return -EINVAL;
7120
7121 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7122 return -EINVAL;
7123
7124 if (!rdev->ops->deauth)
7125 return -EOPNOTSUPP;
7126
7127 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7128 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7129 return -EOPNOTSUPP;
7130
7131 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7132
7133 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7134 if (reason_code == 0) {
7135 /* Reason Code 0 is reserved */
7136 return -EINVAL;
7137 }
7138
7139 if (info->attrs[NL80211_ATTR_IE]) {
7140 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7141 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7142 }
7143
7144 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7145
7146 wdev_lock(dev->ieee80211_ptr);
7147 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7148 local_state_change);
7149 wdev_unlock(dev->ieee80211_ptr);
7150 return err;
7151 }
7152
7153 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7154 {
7155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7156 struct net_device *dev = info->user_ptr[1];
7157 const u8 *ie = NULL, *bssid;
7158 int ie_len = 0, err;
7159 u16 reason_code;
7160 bool local_state_change;
7161
7162 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7163 return -EINVAL;
7164
7165 if (!info->attrs[NL80211_ATTR_MAC])
7166 return -EINVAL;
7167
7168 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7169 return -EINVAL;
7170
7171 if (!rdev->ops->disassoc)
7172 return -EOPNOTSUPP;
7173
7174 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7175 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7176 return -EOPNOTSUPP;
7177
7178 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7179
7180 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7181 if (reason_code == 0) {
7182 /* Reason Code 0 is reserved */
7183 return -EINVAL;
7184 }
7185
7186 if (info->attrs[NL80211_ATTR_IE]) {
7187 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7188 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7189 }
7190
7191 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7192
7193 wdev_lock(dev->ieee80211_ptr);
7194 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7195 local_state_change);
7196 wdev_unlock(dev->ieee80211_ptr);
7197 return err;
7198 }
7199
7200 static bool
7201 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7202 int mcast_rate[IEEE80211_NUM_BANDS],
7203 int rateval)
7204 {
7205 struct wiphy *wiphy = &rdev->wiphy;
7206 bool found = false;
7207 int band, i;
7208
7209 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7210 struct ieee80211_supported_band *sband;
7211
7212 sband = wiphy->bands[band];
7213 if (!sband)
7214 continue;
7215
7216 for (i = 0; i < sband->n_bitrates; i++) {
7217 if (sband->bitrates[i].bitrate == rateval) {
7218 mcast_rate[band] = i + 1;
7219 found = true;
7220 break;
7221 }
7222 }
7223 }
7224
7225 return found;
7226 }
7227
7228 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7229 {
7230 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7231 struct net_device *dev = info->user_ptr[1];
7232 struct cfg80211_ibss_params ibss;
7233 struct wiphy *wiphy;
7234 struct cfg80211_cached_keys *connkeys = NULL;
7235 int err;
7236
7237 memset(&ibss, 0, sizeof(ibss));
7238
7239 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7240 return -EINVAL;
7241
7242 if (!info->attrs[NL80211_ATTR_SSID] ||
7243 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7244 return -EINVAL;
7245
7246 ibss.beacon_interval = 100;
7247
7248 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7249 ibss.beacon_interval =
7250 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7251 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7252 return -EINVAL;
7253 }
7254
7255 if (!rdev->ops->join_ibss)
7256 return -EOPNOTSUPP;
7257
7258 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7259 return -EOPNOTSUPP;
7260
7261 wiphy = &rdev->wiphy;
7262
7263 if (info->attrs[NL80211_ATTR_MAC]) {
7264 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7265
7266 if (!is_valid_ether_addr(ibss.bssid))
7267 return -EINVAL;
7268 }
7269 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7270 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7271
7272 if (info->attrs[NL80211_ATTR_IE]) {
7273 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7274 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7275 }
7276
7277 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7278 if (err)
7279 return err;
7280
7281 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7282 NL80211_IFTYPE_ADHOC))
7283 return -EINVAL;
7284
7285 switch (ibss.chandef.width) {
7286 case NL80211_CHAN_WIDTH_5:
7287 case NL80211_CHAN_WIDTH_10:
7288 case NL80211_CHAN_WIDTH_20_NOHT:
7289 break;
7290 case NL80211_CHAN_WIDTH_20:
7291 case NL80211_CHAN_WIDTH_40:
7292 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7293 return -EINVAL;
7294 break;
7295 case NL80211_CHAN_WIDTH_80:
7296 case NL80211_CHAN_WIDTH_80P80:
7297 case NL80211_CHAN_WIDTH_160:
7298 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7299 return -EINVAL;
7300 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7301 NL80211_EXT_FEATURE_VHT_IBSS))
7302 return -EINVAL;
7303 break;
7304 default:
7305 return -EINVAL;
7306 }
7307
7308 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7309 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7310
7311 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7312 u8 *rates =
7313 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7314 int n_rates =
7315 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7316 struct ieee80211_supported_band *sband =
7317 wiphy->bands[ibss.chandef.chan->band];
7318
7319 err = ieee80211_get_ratemask(sband, rates, n_rates,
7320 &ibss.basic_rates);
7321 if (err)
7322 return err;
7323 }
7324
7325 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7326 memcpy(&ibss.ht_capa_mask,
7327 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7328 sizeof(ibss.ht_capa_mask));
7329
7330 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7331 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7332 return -EINVAL;
7333 memcpy(&ibss.ht_capa,
7334 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7335 sizeof(ibss.ht_capa));
7336 }
7337
7338 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7339 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7340 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7341 return -EINVAL;
7342
7343 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7344 bool no_ht = false;
7345
7346 connkeys = nl80211_parse_connkeys(rdev,
7347 info->attrs[NL80211_ATTR_KEYS],
7348 &no_ht);
7349 if (IS_ERR(connkeys))
7350 return PTR_ERR(connkeys);
7351
7352 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7353 no_ht) {
7354 kfree(connkeys);
7355 return -EINVAL;
7356 }
7357 }
7358
7359 ibss.control_port =
7360 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7361
7362 ibss.userspace_handles_dfs =
7363 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7364
7365 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7366 if (err)
7367 kzfree(connkeys);
7368 return err;
7369 }
7370
7371 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7372 {
7373 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7374 struct net_device *dev = info->user_ptr[1];
7375
7376 if (!rdev->ops->leave_ibss)
7377 return -EOPNOTSUPP;
7378
7379 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7380 return -EOPNOTSUPP;
7381
7382 return cfg80211_leave_ibss(rdev, dev, false);
7383 }
7384
7385 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7386 {
7387 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7388 struct net_device *dev = info->user_ptr[1];
7389 int mcast_rate[IEEE80211_NUM_BANDS];
7390 u32 nla_rate;
7391 int err;
7392
7393 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7394 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7395 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7396 return -EOPNOTSUPP;
7397
7398 if (!rdev->ops->set_mcast_rate)
7399 return -EOPNOTSUPP;
7400
7401 memset(mcast_rate, 0, sizeof(mcast_rate));
7402
7403 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7404 return -EINVAL;
7405
7406 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7407 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7408 return -EINVAL;
7409
7410 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7411
7412 return err;
7413 }
7414
7415 static struct sk_buff *
7416 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7417 struct wireless_dev *wdev, int approxlen,
7418 u32 portid, u32 seq, enum nl80211_commands cmd,
7419 enum nl80211_attrs attr,
7420 const struct nl80211_vendor_cmd_info *info,
7421 gfp_t gfp)
7422 {
7423 struct sk_buff *skb;
7424 void *hdr;
7425 struct nlattr *data;
7426
7427 skb = nlmsg_new(approxlen + 100, gfp);
7428 if (!skb)
7429 return NULL;
7430
7431 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7432 if (!hdr) {
7433 kfree_skb(skb);
7434 return NULL;
7435 }
7436
7437 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7438 goto nla_put_failure;
7439
7440 if (info) {
7441 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7442 info->vendor_id))
7443 goto nla_put_failure;
7444 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7445 info->subcmd))
7446 goto nla_put_failure;
7447 }
7448
7449 if (wdev) {
7450 if (nla_put_u64(skb, NL80211_ATTR_WDEV,
7451 wdev_id(wdev)))
7452 goto nla_put_failure;
7453 if (wdev->netdev &&
7454 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7455 wdev->netdev->ifindex))
7456 goto nla_put_failure;
7457 }
7458
7459 data = nla_nest_start(skb, attr);
7460
7461 ((void **)skb->cb)[0] = rdev;
7462 ((void **)skb->cb)[1] = hdr;
7463 ((void **)skb->cb)[2] = data;
7464
7465 return skb;
7466
7467 nla_put_failure:
7468 kfree_skb(skb);
7469 return NULL;
7470 }
7471
7472 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7473 struct wireless_dev *wdev,
7474 enum nl80211_commands cmd,
7475 enum nl80211_attrs attr,
7476 int vendor_event_idx,
7477 int approxlen, gfp_t gfp)
7478 {
7479 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7480 const struct nl80211_vendor_cmd_info *info;
7481
7482 switch (cmd) {
7483 case NL80211_CMD_TESTMODE:
7484 if (WARN_ON(vendor_event_idx != -1))
7485 return NULL;
7486 info = NULL;
7487 break;
7488 case NL80211_CMD_VENDOR:
7489 if (WARN_ON(vendor_event_idx < 0 ||
7490 vendor_event_idx >= wiphy->n_vendor_events))
7491 return NULL;
7492 info = &wiphy->vendor_events[vendor_event_idx];
7493 break;
7494 default:
7495 WARN_ON(1);
7496 return NULL;
7497 }
7498
7499 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7500 cmd, attr, info, gfp);
7501 }
7502 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7503
7504 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7505 {
7506 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7507 void *hdr = ((void **)skb->cb)[1];
7508 struct nlattr *data = ((void **)skb->cb)[2];
7509 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7510
7511 /* clear CB data for netlink core to own from now on */
7512 memset(skb->cb, 0, sizeof(skb->cb));
7513
7514 nla_nest_end(skb, data);
7515 genlmsg_end(skb, hdr);
7516
7517 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7518 mcgrp = NL80211_MCGRP_VENDOR;
7519
7520 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7521 mcgrp, gfp);
7522 }
7523 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7524
7525 #ifdef CONFIG_NL80211_TESTMODE
7526 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7527 {
7528 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7529 struct wireless_dev *wdev =
7530 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7531 int err;
7532
7533 if (!rdev->ops->testmode_cmd)
7534 return -EOPNOTSUPP;
7535
7536 if (IS_ERR(wdev)) {
7537 err = PTR_ERR(wdev);
7538 if (err != -EINVAL)
7539 return err;
7540 wdev = NULL;
7541 } else if (wdev->wiphy != &rdev->wiphy) {
7542 return -EINVAL;
7543 }
7544
7545 if (!info->attrs[NL80211_ATTR_TESTDATA])
7546 return -EINVAL;
7547
7548 rdev->cur_cmd_info = info;
7549 err = rdev_testmode_cmd(rdev, wdev,
7550 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7551 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7552 rdev->cur_cmd_info = NULL;
7553
7554 return err;
7555 }
7556
7557 static int nl80211_testmode_dump(struct sk_buff *skb,
7558 struct netlink_callback *cb)
7559 {
7560 struct cfg80211_registered_device *rdev;
7561 int err;
7562 long phy_idx;
7563 void *data = NULL;
7564 int data_len = 0;
7565
7566 rtnl_lock();
7567
7568 if (cb->args[0]) {
7569 /*
7570 * 0 is a valid index, but not valid for args[0],
7571 * so we need to offset by 1.
7572 */
7573 phy_idx = cb->args[0] - 1;
7574 } else {
7575 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7576 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7577 nl80211_policy);
7578 if (err)
7579 goto out_err;
7580
7581 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7582 nl80211_fam.attrbuf);
7583 if (IS_ERR(rdev)) {
7584 err = PTR_ERR(rdev);
7585 goto out_err;
7586 }
7587 phy_idx = rdev->wiphy_idx;
7588 rdev = NULL;
7589
7590 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7591 cb->args[1] =
7592 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7593 }
7594
7595 if (cb->args[1]) {
7596 data = nla_data((void *)cb->args[1]);
7597 data_len = nla_len((void *)cb->args[1]);
7598 }
7599
7600 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7601 if (!rdev) {
7602 err = -ENOENT;
7603 goto out_err;
7604 }
7605
7606 if (!rdev->ops->testmode_dump) {
7607 err = -EOPNOTSUPP;
7608 goto out_err;
7609 }
7610
7611 while (1) {
7612 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7613 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7614 NL80211_CMD_TESTMODE);
7615 struct nlattr *tmdata;
7616
7617 if (!hdr)
7618 break;
7619
7620 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7621 genlmsg_cancel(skb, hdr);
7622 break;
7623 }
7624
7625 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7626 if (!tmdata) {
7627 genlmsg_cancel(skb, hdr);
7628 break;
7629 }
7630 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7631 nla_nest_end(skb, tmdata);
7632
7633 if (err == -ENOBUFS || err == -ENOENT) {
7634 genlmsg_cancel(skb, hdr);
7635 break;
7636 } else if (err) {
7637 genlmsg_cancel(skb, hdr);
7638 goto out_err;
7639 }
7640
7641 genlmsg_end(skb, hdr);
7642 }
7643
7644 err = skb->len;
7645 /* see above */
7646 cb->args[0] = phy_idx + 1;
7647 out_err:
7648 rtnl_unlock();
7649 return err;
7650 }
7651 #endif
7652
7653 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7654 {
7655 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7656 struct net_device *dev = info->user_ptr[1];
7657 struct cfg80211_connect_params connect;
7658 struct wiphy *wiphy;
7659 struct cfg80211_cached_keys *connkeys = NULL;
7660 int err;
7661
7662 memset(&connect, 0, sizeof(connect));
7663
7664 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7665 return -EINVAL;
7666
7667 if (!info->attrs[NL80211_ATTR_SSID] ||
7668 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7669 return -EINVAL;
7670
7671 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7672 connect.auth_type =
7673 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7674 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7675 NL80211_CMD_CONNECT))
7676 return -EINVAL;
7677 } else
7678 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7679
7680 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7681
7682 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7683 NL80211_MAX_NR_CIPHER_SUITES);
7684 if (err)
7685 return err;
7686
7687 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7688 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7689 return -EOPNOTSUPP;
7690
7691 wiphy = &rdev->wiphy;
7692
7693 connect.bg_scan_period = -1;
7694 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7695 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7696 connect.bg_scan_period =
7697 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7698 }
7699
7700 if (info->attrs[NL80211_ATTR_MAC])
7701 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7702 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7703 connect.bssid_hint =
7704 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7705 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7706 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7707
7708 if (info->attrs[NL80211_ATTR_IE]) {
7709 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7710 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7711 }
7712
7713 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7714 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7715 if (connect.mfp != NL80211_MFP_REQUIRED &&
7716 connect.mfp != NL80211_MFP_NO)
7717 return -EINVAL;
7718 } else {
7719 connect.mfp = NL80211_MFP_NO;
7720 }
7721
7722 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7723 connect.channel = nl80211_get_valid_chan(
7724 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7725 if (!connect.channel)
7726 return -EINVAL;
7727 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7728 connect.channel_hint = nl80211_get_valid_chan(
7729 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7730 if (!connect.channel_hint)
7731 return -EINVAL;
7732 }
7733
7734 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7735 connkeys = nl80211_parse_connkeys(rdev,
7736 info->attrs[NL80211_ATTR_KEYS], NULL);
7737 if (IS_ERR(connkeys))
7738 return PTR_ERR(connkeys);
7739 }
7740
7741 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7742 connect.flags |= ASSOC_REQ_DISABLE_HT;
7743
7744 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7745 memcpy(&connect.ht_capa_mask,
7746 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7747 sizeof(connect.ht_capa_mask));
7748
7749 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7750 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7751 kzfree(connkeys);
7752 return -EINVAL;
7753 }
7754 memcpy(&connect.ht_capa,
7755 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7756 sizeof(connect.ht_capa));
7757 }
7758
7759 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7760 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7761
7762 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7763 memcpy(&connect.vht_capa_mask,
7764 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7765 sizeof(connect.vht_capa_mask));
7766
7767 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7768 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7769 kzfree(connkeys);
7770 return -EINVAL;
7771 }
7772 memcpy(&connect.vht_capa,
7773 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7774 sizeof(connect.vht_capa));
7775 }
7776
7777 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7778 if (!(rdev->wiphy.features &
7779 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7780 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7781 return -EINVAL;
7782 connect.flags |= ASSOC_REQ_USE_RRM;
7783 }
7784
7785 wdev_lock(dev->ieee80211_ptr);
7786 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7787 wdev_unlock(dev->ieee80211_ptr);
7788 if (err)
7789 kzfree(connkeys);
7790 return err;
7791 }
7792
7793 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7794 {
7795 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7796 struct net_device *dev = info->user_ptr[1];
7797 u16 reason;
7798 int ret;
7799
7800 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7801 reason = WLAN_REASON_DEAUTH_LEAVING;
7802 else
7803 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7804
7805 if (reason == 0)
7806 return -EINVAL;
7807
7808 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7809 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7810 return -EOPNOTSUPP;
7811
7812 wdev_lock(dev->ieee80211_ptr);
7813 ret = cfg80211_disconnect(rdev, dev, reason, true);
7814 wdev_unlock(dev->ieee80211_ptr);
7815 return ret;
7816 }
7817
7818 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7819 {
7820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7821 struct net *net;
7822 int err;
7823
7824 if (info->attrs[NL80211_ATTR_PID]) {
7825 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7826
7827 net = get_net_ns_by_pid(pid);
7828 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
7829 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
7830
7831 net = get_net_ns_by_fd(fd);
7832 } else {
7833 return -EINVAL;
7834 }
7835
7836 if (IS_ERR(net))
7837 return PTR_ERR(net);
7838
7839 err = 0;
7840
7841 /* check if anything to do */
7842 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7843 err = cfg80211_switch_netns(rdev, net);
7844
7845 put_net(net);
7846 return err;
7847 }
7848
7849 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7850 {
7851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7852 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7853 struct cfg80211_pmksa *pmksa) = NULL;
7854 struct net_device *dev = info->user_ptr[1];
7855 struct cfg80211_pmksa pmksa;
7856
7857 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7858
7859 if (!info->attrs[NL80211_ATTR_MAC])
7860 return -EINVAL;
7861
7862 if (!info->attrs[NL80211_ATTR_PMKID])
7863 return -EINVAL;
7864
7865 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7866 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7867
7868 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7869 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7870 return -EOPNOTSUPP;
7871
7872 switch (info->genlhdr->cmd) {
7873 case NL80211_CMD_SET_PMKSA:
7874 rdev_ops = rdev->ops->set_pmksa;
7875 break;
7876 case NL80211_CMD_DEL_PMKSA:
7877 rdev_ops = rdev->ops->del_pmksa;
7878 break;
7879 default:
7880 WARN_ON(1);
7881 break;
7882 }
7883
7884 if (!rdev_ops)
7885 return -EOPNOTSUPP;
7886
7887 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7888 }
7889
7890 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7891 {
7892 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7893 struct net_device *dev = info->user_ptr[1];
7894
7895 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7896 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7897 return -EOPNOTSUPP;
7898
7899 if (!rdev->ops->flush_pmksa)
7900 return -EOPNOTSUPP;
7901
7902 return rdev_flush_pmksa(rdev, dev);
7903 }
7904
7905 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7906 {
7907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7908 struct net_device *dev = info->user_ptr[1];
7909 u8 action_code, dialog_token;
7910 u32 peer_capability = 0;
7911 u16 status_code;
7912 u8 *peer;
7913 bool initiator;
7914
7915 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7916 !rdev->ops->tdls_mgmt)
7917 return -EOPNOTSUPP;
7918
7919 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7920 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7921 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7922 !info->attrs[NL80211_ATTR_IE] ||
7923 !info->attrs[NL80211_ATTR_MAC])
7924 return -EINVAL;
7925
7926 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7927 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7928 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7929 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7930 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7931 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7932 peer_capability =
7933 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7934
7935 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7936 dialog_token, status_code, peer_capability,
7937 initiator,
7938 nla_data(info->attrs[NL80211_ATTR_IE]),
7939 nla_len(info->attrs[NL80211_ATTR_IE]));
7940 }
7941
7942 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7943 {
7944 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7945 struct net_device *dev = info->user_ptr[1];
7946 enum nl80211_tdls_operation operation;
7947 u8 *peer;
7948
7949 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7950 !rdev->ops->tdls_oper)
7951 return -EOPNOTSUPP;
7952
7953 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7954 !info->attrs[NL80211_ATTR_MAC])
7955 return -EINVAL;
7956
7957 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7958 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7959
7960 return rdev_tdls_oper(rdev, dev, peer, operation);
7961 }
7962
7963 static int nl80211_remain_on_channel(struct sk_buff *skb,
7964 struct genl_info *info)
7965 {
7966 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7967 struct wireless_dev *wdev = info->user_ptr[1];
7968 struct cfg80211_chan_def chandef;
7969 struct sk_buff *msg;
7970 void *hdr;
7971 u64 cookie;
7972 u32 duration;
7973 int err;
7974
7975 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7976 !info->attrs[NL80211_ATTR_DURATION])
7977 return -EINVAL;
7978
7979 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7980
7981 if (!rdev->ops->remain_on_channel ||
7982 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7983 return -EOPNOTSUPP;
7984
7985 /*
7986 * We should be on that channel for at least a minimum amount of
7987 * time (10ms) but no longer than the driver supports.
7988 */
7989 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7990 duration > rdev->wiphy.max_remain_on_channel_duration)
7991 return -EINVAL;
7992
7993 err = nl80211_parse_chandef(rdev, info, &chandef);
7994 if (err)
7995 return err;
7996
7997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7998 if (!msg)
7999 return -ENOMEM;
8000
8001 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8002 NL80211_CMD_REMAIN_ON_CHANNEL);
8003 if (!hdr) {
8004 err = -ENOBUFS;
8005 goto free_msg;
8006 }
8007
8008 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8009 duration, &cookie);
8010
8011 if (err)
8012 goto free_msg;
8013
8014 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8015 goto nla_put_failure;
8016
8017 genlmsg_end(msg, hdr);
8018
8019 return genlmsg_reply(msg, info);
8020
8021 nla_put_failure:
8022 err = -ENOBUFS;
8023 free_msg:
8024 nlmsg_free(msg);
8025 return err;
8026 }
8027
8028 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8029 struct genl_info *info)
8030 {
8031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8032 struct wireless_dev *wdev = info->user_ptr[1];
8033 u64 cookie;
8034
8035 if (!info->attrs[NL80211_ATTR_COOKIE])
8036 return -EINVAL;
8037
8038 if (!rdev->ops->cancel_remain_on_channel)
8039 return -EOPNOTSUPP;
8040
8041 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8042
8043 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8044 }
8045
8046 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8047 u8 *rates, u8 rates_len)
8048 {
8049 u8 i;
8050 u32 mask = 0;
8051
8052 for (i = 0; i < rates_len; i++) {
8053 int rate = (rates[i] & 0x7f) * 5;
8054 int ridx;
8055 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8056 struct ieee80211_rate *srate =
8057 &sband->bitrates[ridx];
8058 if (rate == srate->bitrate) {
8059 mask |= 1 << ridx;
8060 break;
8061 }
8062 }
8063 if (ridx == sband->n_bitrates)
8064 return 0; /* rate not found */
8065 }
8066
8067 return mask;
8068 }
8069
8070 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8071 u8 *rates, u8 rates_len,
8072 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8073 {
8074 u8 i;
8075
8076 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8077
8078 for (i = 0; i < rates_len; i++) {
8079 int ridx, rbit;
8080
8081 ridx = rates[i] / 8;
8082 rbit = BIT(rates[i] % 8);
8083
8084 /* check validity */
8085 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8086 return false;
8087
8088 /* check availability */
8089 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8090 mcs[ridx] |= rbit;
8091 else
8092 return false;
8093 }
8094
8095 return true;
8096 }
8097
8098 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8099 {
8100 u16 mcs_mask = 0;
8101
8102 switch (vht_mcs_map) {
8103 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8104 break;
8105 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8106 mcs_mask = 0x00FF;
8107 break;
8108 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8109 mcs_mask = 0x01FF;
8110 break;
8111 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8112 mcs_mask = 0x03FF;
8113 break;
8114 default:
8115 break;
8116 }
8117
8118 return mcs_mask;
8119 }
8120
8121 static void vht_build_mcs_mask(u16 vht_mcs_map,
8122 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8123 {
8124 u8 nss;
8125
8126 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8127 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8128 vht_mcs_map >>= 2;
8129 }
8130 }
8131
8132 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8133 struct nl80211_txrate_vht *txrate,
8134 u16 mcs[NL80211_VHT_NSS_MAX])
8135 {
8136 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8137 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8138 u8 i;
8139
8140 if (!sband->vht_cap.vht_supported)
8141 return false;
8142
8143 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8144
8145 /* Build vht_mcs_mask from VHT capabilities */
8146 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8147
8148 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8149 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8150 mcs[i] = txrate->mcs[i];
8151 else
8152 return false;
8153 }
8154
8155 return true;
8156 }
8157
8158 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8159 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8160 .len = NL80211_MAX_SUPP_RATES },
8161 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8162 .len = NL80211_MAX_SUPP_HT_RATES },
8163 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8164 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8165 };
8166
8167 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8168 struct genl_info *info)
8169 {
8170 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8172 struct cfg80211_bitrate_mask mask;
8173 int rem, i;
8174 struct net_device *dev = info->user_ptr[1];
8175 struct nlattr *tx_rates;
8176 struct ieee80211_supported_band *sband;
8177 u16 vht_tx_mcs_map;
8178
8179 if (!rdev->ops->set_bitrate_mask)
8180 return -EOPNOTSUPP;
8181
8182 memset(&mask, 0, sizeof(mask));
8183 /* Default to all rates enabled */
8184 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8185 sband = rdev->wiphy.bands[i];
8186
8187 if (!sband)
8188 continue;
8189
8190 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8191 memcpy(mask.control[i].ht_mcs,
8192 sband->ht_cap.mcs.rx_mask,
8193 sizeof(mask.control[i].ht_mcs));
8194
8195 if (!sband->vht_cap.vht_supported)
8196 continue;
8197
8198 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8199 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8200 }
8201
8202 /* if no rates are given set it back to the defaults */
8203 if (!info->attrs[NL80211_ATTR_TX_RATES])
8204 goto out;
8205
8206 /*
8207 * The nested attribute uses enum nl80211_band as the index. This maps
8208 * directly to the enum ieee80211_band values used in cfg80211.
8209 */
8210 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8211 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8212 enum ieee80211_band band = nla_type(tx_rates);
8213 int err;
8214
8215 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8216 return -EINVAL;
8217 sband = rdev->wiphy.bands[band];
8218 if (sband == NULL)
8219 return -EINVAL;
8220 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8221 nla_len(tx_rates), nl80211_txattr_policy);
8222 if (err)
8223 return err;
8224 if (tb[NL80211_TXRATE_LEGACY]) {
8225 mask.control[band].legacy = rateset_to_mask(
8226 sband,
8227 nla_data(tb[NL80211_TXRATE_LEGACY]),
8228 nla_len(tb[NL80211_TXRATE_LEGACY]));
8229 if ((mask.control[band].legacy == 0) &&
8230 nla_len(tb[NL80211_TXRATE_LEGACY]))
8231 return -EINVAL;
8232 }
8233 if (tb[NL80211_TXRATE_HT]) {
8234 if (!ht_rateset_to_mask(
8235 sband,
8236 nla_data(tb[NL80211_TXRATE_HT]),
8237 nla_len(tb[NL80211_TXRATE_HT]),
8238 mask.control[band].ht_mcs))
8239 return -EINVAL;
8240 }
8241 if (tb[NL80211_TXRATE_VHT]) {
8242 if (!vht_set_mcs_mask(
8243 sband,
8244 nla_data(tb[NL80211_TXRATE_VHT]),
8245 mask.control[band].vht_mcs))
8246 return -EINVAL;
8247 }
8248 if (tb[NL80211_TXRATE_GI]) {
8249 mask.control[band].gi =
8250 nla_get_u8(tb[NL80211_TXRATE_GI]);
8251 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8252 return -EINVAL;
8253 }
8254
8255 if (mask.control[band].legacy == 0) {
8256 /* don't allow empty legacy rates if HT or VHT
8257 * are not even supported.
8258 */
8259 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8260 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8261 return -EINVAL;
8262
8263 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8264 if (mask.control[band].ht_mcs[i])
8265 goto out;
8266
8267 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8268 if (mask.control[band].vht_mcs[i])
8269 goto out;
8270
8271 /* legacy and mcs rates may not be both empty */
8272 return -EINVAL;
8273 }
8274 }
8275
8276 out:
8277 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8278 }
8279
8280 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8281 {
8282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8283 struct wireless_dev *wdev = info->user_ptr[1];
8284 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8285
8286 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8287 return -EINVAL;
8288
8289 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8290 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8291
8292 switch (wdev->iftype) {
8293 case NL80211_IFTYPE_STATION:
8294 case NL80211_IFTYPE_ADHOC:
8295 case NL80211_IFTYPE_P2P_CLIENT:
8296 case NL80211_IFTYPE_AP:
8297 case NL80211_IFTYPE_AP_VLAN:
8298 case NL80211_IFTYPE_MESH_POINT:
8299 case NL80211_IFTYPE_P2P_GO:
8300 case NL80211_IFTYPE_P2P_DEVICE:
8301 break;
8302 default:
8303 return -EOPNOTSUPP;
8304 }
8305
8306 /* not much point in registering if we can't reply */
8307 if (!rdev->ops->mgmt_tx)
8308 return -EOPNOTSUPP;
8309
8310 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8311 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8312 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8313 }
8314
8315 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8316 {
8317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8318 struct wireless_dev *wdev = info->user_ptr[1];
8319 struct cfg80211_chan_def chandef;
8320 int err;
8321 void *hdr = NULL;
8322 u64 cookie;
8323 struct sk_buff *msg = NULL;
8324 struct cfg80211_mgmt_tx_params params = {
8325 .dont_wait_for_ack =
8326 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8327 };
8328
8329 if (!info->attrs[NL80211_ATTR_FRAME])
8330 return -EINVAL;
8331
8332 if (!rdev->ops->mgmt_tx)
8333 return -EOPNOTSUPP;
8334
8335 switch (wdev->iftype) {
8336 case NL80211_IFTYPE_P2P_DEVICE:
8337 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8338 return -EINVAL;
8339 case NL80211_IFTYPE_STATION:
8340 case NL80211_IFTYPE_ADHOC:
8341 case NL80211_IFTYPE_P2P_CLIENT:
8342 case NL80211_IFTYPE_AP:
8343 case NL80211_IFTYPE_AP_VLAN:
8344 case NL80211_IFTYPE_MESH_POINT:
8345 case NL80211_IFTYPE_P2P_GO:
8346 break;
8347 default:
8348 return -EOPNOTSUPP;
8349 }
8350
8351 if (info->attrs[NL80211_ATTR_DURATION]) {
8352 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8353 return -EINVAL;
8354 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8355
8356 /*
8357 * We should wait on the channel for at least a minimum amount
8358 * of time (10ms) but no longer than the driver supports.
8359 */
8360 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8361 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8362 return -EINVAL;
8363
8364 }
8365
8366 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8367
8368 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8369 return -EINVAL;
8370
8371 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8372
8373 /* get the channel if any has been specified, otherwise pass NULL to
8374 * the driver. The latter will use the current one
8375 */
8376 chandef.chan = NULL;
8377 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8378 err = nl80211_parse_chandef(rdev, info, &chandef);
8379 if (err)
8380 return err;
8381 }
8382
8383 if (!chandef.chan && params.offchan)
8384 return -EINVAL;
8385
8386 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8387 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8388
8389 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8390 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8391 int i;
8392
8393 if (len % sizeof(u16))
8394 return -EINVAL;
8395
8396 params.n_csa_offsets = len / sizeof(u16);
8397 params.csa_offsets =
8398 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8399
8400 /* check that all the offsets fit the frame */
8401 for (i = 0; i < params.n_csa_offsets; i++) {
8402 if (params.csa_offsets[i] >= params.len)
8403 return -EINVAL;
8404 }
8405 }
8406
8407 if (!params.dont_wait_for_ack) {
8408 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8409 if (!msg)
8410 return -ENOMEM;
8411
8412 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8413 NL80211_CMD_FRAME);
8414 if (!hdr) {
8415 err = -ENOBUFS;
8416 goto free_msg;
8417 }
8418 }
8419
8420 params.chan = chandef.chan;
8421 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8422 if (err)
8423 goto free_msg;
8424
8425 if (msg) {
8426 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8427 goto nla_put_failure;
8428
8429 genlmsg_end(msg, hdr);
8430 return genlmsg_reply(msg, info);
8431 }
8432
8433 return 0;
8434
8435 nla_put_failure:
8436 err = -ENOBUFS;
8437 free_msg:
8438 nlmsg_free(msg);
8439 return err;
8440 }
8441
8442 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8443 {
8444 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8445 struct wireless_dev *wdev = info->user_ptr[1];
8446 u64 cookie;
8447
8448 if (!info->attrs[NL80211_ATTR_COOKIE])
8449 return -EINVAL;
8450
8451 if (!rdev->ops->mgmt_tx_cancel_wait)
8452 return -EOPNOTSUPP;
8453
8454 switch (wdev->iftype) {
8455 case NL80211_IFTYPE_STATION:
8456 case NL80211_IFTYPE_ADHOC:
8457 case NL80211_IFTYPE_P2P_CLIENT:
8458 case NL80211_IFTYPE_AP:
8459 case NL80211_IFTYPE_AP_VLAN:
8460 case NL80211_IFTYPE_P2P_GO:
8461 case NL80211_IFTYPE_P2P_DEVICE:
8462 break;
8463 default:
8464 return -EOPNOTSUPP;
8465 }
8466
8467 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8468
8469 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8470 }
8471
8472 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8473 {
8474 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8475 struct wireless_dev *wdev;
8476 struct net_device *dev = info->user_ptr[1];
8477 u8 ps_state;
8478 bool state;
8479 int err;
8480
8481 if (!info->attrs[NL80211_ATTR_PS_STATE])
8482 return -EINVAL;
8483
8484 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8485
8486 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8487 return -EINVAL;
8488
8489 wdev = dev->ieee80211_ptr;
8490
8491 if (!rdev->ops->set_power_mgmt)
8492 return -EOPNOTSUPP;
8493
8494 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8495
8496 if (state == wdev->ps)
8497 return 0;
8498
8499 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8500 if (!err)
8501 wdev->ps = state;
8502 return err;
8503 }
8504
8505 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8506 {
8507 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8508 enum nl80211_ps_state ps_state;
8509 struct wireless_dev *wdev;
8510 struct net_device *dev = info->user_ptr[1];
8511 struct sk_buff *msg;
8512 void *hdr;
8513 int err;
8514
8515 wdev = dev->ieee80211_ptr;
8516
8517 if (!rdev->ops->set_power_mgmt)
8518 return -EOPNOTSUPP;
8519
8520 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8521 if (!msg)
8522 return -ENOMEM;
8523
8524 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8525 NL80211_CMD_GET_POWER_SAVE);
8526 if (!hdr) {
8527 err = -ENOBUFS;
8528 goto free_msg;
8529 }
8530
8531 if (wdev->ps)
8532 ps_state = NL80211_PS_ENABLED;
8533 else
8534 ps_state = NL80211_PS_DISABLED;
8535
8536 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8537 goto nla_put_failure;
8538
8539 genlmsg_end(msg, hdr);
8540 return genlmsg_reply(msg, info);
8541
8542 nla_put_failure:
8543 err = -ENOBUFS;
8544 free_msg:
8545 nlmsg_free(msg);
8546 return err;
8547 }
8548
8549 static const struct nla_policy
8550 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8551 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8552 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8553 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8554 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8555 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8556 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8557 };
8558
8559 static int nl80211_set_cqm_txe(struct genl_info *info,
8560 u32 rate, u32 pkts, u32 intvl)
8561 {
8562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8563 struct net_device *dev = info->user_ptr[1];
8564 struct wireless_dev *wdev = dev->ieee80211_ptr;
8565
8566 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8567 return -EINVAL;
8568
8569 if (!rdev->ops->set_cqm_txe_config)
8570 return -EOPNOTSUPP;
8571
8572 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8573 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8574 return -EOPNOTSUPP;
8575
8576 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8577 }
8578
8579 static int nl80211_set_cqm_rssi(struct genl_info *info,
8580 s32 threshold, u32 hysteresis)
8581 {
8582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8583 struct net_device *dev = info->user_ptr[1];
8584 struct wireless_dev *wdev = dev->ieee80211_ptr;
8585
8586 if (threshold > 0)
8587 return -EINVAL;
8588
8589 /* disabling - hysteresis should also be zero then */
8590 if (threshold == 0)
8591 hysteresis = 0;
8592
8593 if (!rdev->ops->set_cqm_rssi_config)
8594 return -EOPNOTSUPP;
8595
8596 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8597 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8598 return -EOPNOTSUPP;
8599
8600 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8601 }
8602
8603 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8604 {
8605 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8606 struct nlattr *cqm;
8607 int err;
8608
8609 cqm = info->attrs[NL80211_ATTR_CQM];
8610 if (!cqm)
8611 return -EINVAL;
8612
8613 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8614 nl80211_attr_cqm_policy);
8615 if (err)
8616 return err;
8617
8618 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8619 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8620 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8621 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8622
8623 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8624 }
8625
8626 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8627 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8628 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8629 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8630 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8631 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8632
8633 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8634 }
8635
8636 return -EINVAL;
8637 }
8638
8639 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8640 {
8641 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8642 struct net_device *dev = info->user_ptr[1];
8643 struct ocb_setup setup = {};
8644 int err;
8645
8646 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8647 if (err)
8648 return err;
8649
8650 return cfg80211_join_ocb(rdev, dev, &setup);
8651 }
8652
8653 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8654 {
8655 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8656 struct net_device *dev = info->user_ptr[1];
8657
8658 return cfg80211_leave_ocb(rdev, dev);
8659 }
8660
8661 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8662 {
8663 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8664 struct net_device *dev = info->user_ptr[1];
8665 struct mesh_config cfg;
8666 struct mesh_setup setup;
8667 int err;
8668
8669 /* start with default */
8670 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8671 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8672
8673 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8674 /* and parse parameters if given */
8675 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8676 if (err)
8677 return err;
8678 }
8679
8680 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8681 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8682 return -EINVAL;
8683
8684 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8685 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8686
8687 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8688 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8689 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8690 return -EINVAL;
8691
8692 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8693 setup.beacon_interval =
8694 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8695 if (setup.beacon_interval < 10 ||
8696 setup.beacon_interval > 10000)
8697 return -EINVAL;
8698 }
8699
8700 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8701 setup.dtim_period =
8702 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8703 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8704 return -EINVAL;
8705 }
8706
8707 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8708 /* parse additional setup parameters if given */
8709 err = nl80211_parse_mesh_setup(info, &setup);
8710 if (err)
8711 return err;
8712 }
8713
8714 if (setup.user_mpm)
8715 cfg.auto_open_plinks = false;
8716
8717 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8718 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8719 if (err)
8720 return err;
8721 } else {
8722 /* cfg80211_join_mesh() will sort it out */
8723 setup.chandef.chan = NULL;
8724 }
8725
8726 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8727 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8728 int n_rates =
8729 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8730 struct ieee80211_supported_band *sband;
8731
8732 if (!setup.chandef.chan)
8733 return -EINVAL;
8734
8735 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8736
8737 err = ieee80211_get_ratemask(sband, rates, n_rates,
8738 &setup.basic_rates);
8739 if (err)
8740 return err;
8741 }
8742
8743 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8744 }
8745
8746 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8747 {
8748 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8749 struct net_device *dev = info->user_ptr[1];
8750
8751 return cfg80211_leave_mesh(rdev, dev);
8752 }
8753
8754 #ifdef CONFIG_PM
8755 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8756 struct cfg80211_registered_device *rdev)
8757 {
8758 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8759 struct nlattr *nl_pats, *nl_pat;
8760 int i, pat_len;
8761
8762 if (!wowlan->n_patterns)
8763 return 0;
8764
8765 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8766 if (!nl_pats)
8767 return -ENOBUFS;
8768
8769 for (i = 0; i < wowlan->n_patterns; i++) {
8770 nl_pat = nla_nest_start(msg, i + 1);
8771 if (!nl_pat)
8772 return -ENOBUFS;
8773 pat_len = wowlan->patterns[i].pattern_len;
8774 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8775 wowlan->patterns[i].mask) ||
8776 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8777 wowlan->patterns[i].pattern) ||
8778 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8779 wowlan->patterns[i].pkt_offset))
8780 return -ENOBUFS;
8781 nla_nest_end(msg, nl_pat);
8782 }
8783 nla_nest_end(msg, nl_pats);
8784
8785 return 0;
8786 }
8787
8788 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8789 struct cfg80211_wowlan_tcp *tcp)
8790 {
8791 struct nlattr *nl_tcp;
8792
8793 if (!tcp)
8794 return 0;
8795
8796 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8797 if (!nl_tcp)
8798 return -ENOBUFS;
8799
8800 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8801 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8802 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8803 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8804 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8805 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8806 tcp->payload_len, tcp->payload) ||
8807 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8808 tcp->data_interval) ||
8809 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8810 tcp->wake_len, tcp->wake_data) ||
8811 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8812 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8813 return -ENOBUFS;
8814
8815 if (tcp->payload_seq.len &&
8816 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8817 sizeof(tcp->payload_seq), &tcp->payload_seq))
8818 return -ENOBUFS;
8819
8820 if (tcp->payload_tok.len &&
8821 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8822 sizeof(tcp->payload_tok) + tcp->tokens_size,
8823 &tcp->payload_tok))
8824 return -ENOBUFS;
8825
8826 nla_nest_end(msg, nl_tcp);
8827
8828 return 0;
8829 }
8830
8831 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8832 struct cfg80211_sched_scan_request *req)
8833 {
8834 struct nlattr *nd, *freqs, *matches, *match;
8835 int i;
8836
8837 if (!req)
8838 return 0;
8839
8840 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8841 if (!nd)
8842 return -ENOBUFS;
8843
8844 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8845 return -ENOBUFS;
8846
8847 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
8848 return -ENOBUFS;
8849
8850 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8851 if (!freqs)
8852 return -ENOBUFS;
8853
8854 for (i = 0; i < req->n_channels; i++)
8855 nla_put_u32(msg, i, req->channels[i]->center_freq);
8856
8857 nla_nest_end(msg, freqs);
8858
8859 if (req->n_match_sets) {
8860 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8861 for (i = 0; i < req->n_match_sets; i++) {
8862 match = nla_nest_start(msg, i);
8863 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8864 req->match_sets[i].ssid.ssid_len,
8865 req->match_sets[i].ssid.ssid);
8866 nla_nest_end(msg, match);
8867 }
8868 nla_nest_end(msg, matches);
8869 }
8870
8871 nla_nest_end(msg, nd);
8872
8873 return 0;
8874 }
8875
8876 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8877 {
8878 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8879 struct sk_buff *msg;
8880 void *hdr;
8881 u32 size = NLMSG_DEFAULT_SIZE;
8882
8883 if (!rdev->wiphy.wowlan)
8884 return -EOPNOTSUPP;
8885
8886 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8887 /* adjust size to have room for all the data */
8888 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8889 rdev->wiphy.wowlan_config->tcp->payload_len +
8890 rdev->wiphy.wowlan_config->tcp->wake_len +
8891 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8892 }
8893
8894 msg = nlmsg_new(size, GFP_KERNEL);
8895 if (!msg)
8896 return -ENOMEM;
8897
8898 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8899 NL80211_CMD_GET_WOWLAN);
8900 if (!hdr)
8901 goto nla_put_failure;
8902
8903 if (rdev->wiphy.wowlan_config) {
8904 struct nlattr *nl_wowlan;
8905
8906 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8907 if (!nl_wowlan)
8908 goto nla_put_failure;
8909
8910 if ((rdev->wiphy.wowlan_config->any &&
8911 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8912 (rdev->wiphy.wowlan_config->disconnect &&
8913 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8914 (rdev->wiphy.wowlan_config->magic_pkt &&
8915 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8916 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8917 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8918 (rdev->wiphy.wowlan_config->eap_identity_req &&
8919 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8920 (rdev->wiphy.wowlan_config->four_way_handshake &&
8921 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8922 (rdev->wiphy.wowlan_config->rfkill_release &&
8923 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8924 goto nla_put_failure;
8925
8926 if (nl80211_send_wowlan_patterns(msg, rdev))
8927 goto nla_put_failure;
8928
8929 if (nl80211_send_wowlan_tcp(msg,
8930 rdev->wiphy.wowlan_config->tcp))
8931 goto nla_put_failure;
8932
8933 if (nl80211_send_wowlan_nd(
8934 msg,
8935 rdev->wiphy.wowlan_config->nd_config))
8936 goto nla_put_failure;
8937
8938 nla_nest_end(msg, nl_wowlan);
8939 }
8940
8941 genlmsg_end(msg, hdr);
8942 return genlmsg_reply(msg, info);
8943
8944 nla_put_failure:
8945 nlmsg_free(msg);
8946 return -ENOBUFS;
8947 }
8948
8949 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8950 struct nlattr *attr,
8951 struct cfg80211_wowlan *trig)
8952 {
8953 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8954 struct cfg80211_wowlan_tcp *cfg;
8955 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8956 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8957 u32 size;
8958 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8959 int err, port;
8960
8961 if (!rdev->wiphy.wowlan->tcp)
8962 return -EINVAL;
8963
8964 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8965 nla_data(attr), nla_len(attr),
8966 nl80211_wowlan_tcp_policy);
8967 if (err)
8968 return err;
8969
8970 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8971 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8972 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8973 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8974 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8975 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8976 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8977 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8978 return -EINVAL;
8979
8980 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8981 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8982 return -EINVAL;
8983
8984 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8985 rdev->wiphy.wowlan->tcp->data_interval_max ||
8986 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8987 return -EINVAL;
8988
8989 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8990 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8991 return -EINVAL;
8992
8993 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8994 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8995 return -EINVAL;
8996
8997 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8998 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8999
9000 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9001 tokens_size = tokln - sizeof(*tok);
9002
9003 if (!tok->len || tokens_size % tok->len)
9004 return -EINVAL;
9005 if (!rdev->wiphy.wowlan->tcp->tok)
9006 return -EINVAL;
9007 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9008 return -EINVAL;
9009 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9010 return -EINVAL;
9011 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9012 return -EINVAL;
9013 if (tok->offset + tok->len > data_size)
9014 return -EINVAL;
9015 }
9016
9017 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9018 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9019 if (!rdev->wiphy.wowlan->tcp->seq)
9020 return -EINVAL;
9021 if (seq->len == 0 || seq->len > 4)
9022 return -EINVAL;
9023 if (seq->len + seq->offset > data_size)
9024 return -EINVAL;
9025 }
9026
9027 size = sizeof(*cfg);
9028 size += data_size;
9029 size += wake_size + wake_mask_size;
9030 size += tokens_size;
9031
9032 cfg = kzalloc(size, GFP_KERNEL);
9033 if (!cfg)
9034 return -ENOMEM;
9035 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9036 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9037 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9038 ETH_ALEN);
9039 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9040 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9041 else
9042 port = 0;
9043 #ifdef CONFIG_INET
9044 /* allocate a socket and port for it and use it */
9045 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9046 IPPROTO_TCP, &cfg->sock, 1);
9047 if (err) {
9048 kfree(cfg);
9049 return err;
9050 }
9051 if (inet_csk_get_port(cfg->sock->sk, port)) {
9052 sock_release(cfg->sock);
9053 kfree(cfg);
9054 return -EADDRINUSE;
9055 }
9056 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9057 #else
9058 if (!port) {
9059 kfree(cfg);
9060 return -EINVAL;
9061 }
9062 cfg->src_port = port;
9063 #endif
9064
9065 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9066 cfg->payload_len = data_size;
9067 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9068 memcpy((void *)cfg->payload,
9069 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9070 data_size);
9071 if (seq)
9072 cfg->payload_seq = *seq;
9073 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9074 cfg->wake_len = wake_size;
9075 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9076 memcpy((void *)cfg->wake_data,
9077 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9078 wake_size);
9079 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9080 data_size + wake_size;
9081 memcpy((void *)cfg->wake_mask,
9082 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9083 wake_mask_size);
9084 if (tok) {
9085 cfg->tokens_size = tokens_size;
9086 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9087 }
9088
9089 trig->tcp = cfg;
9090
9091 return 0;
9092 }
9093
9094 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9095 const struct wiphy_wowlan_support *wowlan,
9096 struct nlattr *attr,
9097 struct cfg80211_wowlan *trig)
9098 {
9099 struct nlattr **tb;
9100 int err;
9101
9102 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9103 if (!tb)
9104 return -ENOMEM;
9105
9106 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9107 err = -EOPNOTSUPP;
9108 goto out;
9109 }
9110
9111 err = nla_parse(tb, NL80211_ATTR_MAX,
9112 nla_data(attr), nla_len(attr),
9113 nl80211_policy);
9114 if (err)
9115 goto out;
9116
9117 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9118 err = PTR_ERR_OR_ZERO(trig->nd_config);
9119 if (err)
9120 trig->nd_config = NULL;
9121
9122 out:
9123 kfree(tb);
9124 return err;
9125 }
9126
9127 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9128 {
9129 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9130 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9131 struct cfg80211_wowlan new_triggers = {};
9132 struct cfg80211_wowlan *ntrig;
9133 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9134 int err, i;
9135 bool prev_enabled = rdev->wiphy.wowlan_config;
9136 bool regular = false;
9137
9138 if (!wowlan)
9139 return -EOPNOTSUPP;
9140
9141 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9142 cfg80211_rdev_free_wowlan(rdev);
9143 rdev->wiphy.wowlan_config = NULL;
9144 goto set_wakeup;
9145 }
9146
9147 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9148 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9149 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9150 nl80211_wowlan_policy);
9151 if (err)
9152 return err;
9153
9154 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9155 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9156 return -EINVAL;
9157 new_triggers.any = true;
9158 }
9159
9160 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9161 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9162 return -EINVAL;
9163 new_triggers.disconnect = true;
9164 regular = true;
9165 }
9166
9167 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9168 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9169 return -EINVAL;
9170 new_triggers.magic_pkt = true;
9171 regular = true;
9172 }
9173
9174 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9175 return -EINVAL;
9176
9177 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9178 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9179 return -EINVAL;
9180 new_triggers.gtk_rekey_failure = true;
9181 regular = true;
9182 }
9183
9184 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9185 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9186 return -EINVAL;
9187 new_triggers.eap_identity_req = true;
9188 regular = true;
9189 }
9190
9191 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9192 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9193 return -EINVAL;
9194 new_triggers.four_way_handshake = true;
9195 regular = true;
9196 }
9197
9198 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9199 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9200 return -EINVAL;
9201 new_triggers.rfkill_release = true;
9202 regular = true;
9203 }
9204
9205 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9206 struct nlattr *pat;
9207 int n_patterns = 0;
9208 int rem, pat_len, mask_len, pkt_offset;
9209 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9210
9211 regular = true;
9212
9213 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9214 rem)
9215 n_patterns++;
9216 if (n_patterns > wowlan->n_patterns)
9217 return -EINVAL;
9218
9219 new_triggers.patterns = kcalloc(n_patterns,
9220 sizeof(new_triggers.patterns[0]),
9221 GFP_KERNEL);
9222 if (!new_triggers.patterns)
9223 return -ENOMEM;
9224
9225 new_triggers.n_patterns = n_patterns;
9226 i = 0;
9227
9228 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9229 rem) {
9230 u8 *mask_pat;
9231
9232 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9233 nla_len(pat), NULL);
9234 err = -EINVAL;
9235 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9236 !pat_tb[NL80211_PKTPAT_PATTERN])
9237 goto error;
9238 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9239 mask_len = DIV_ROUND_UP(pat_len, 8);
9240 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9241 goto error;
9242 if (pat_len > wowlan->pattern_max_len ||
9243 pat_len < wowlan->pattern_min_len)
9244 goto error;
9245
9246 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9247 pkt_offset = 0;
9248 else
9249 pkt_offset = nla_get_u32(
9250 pat_tb[NL80211_PKTPAT_OFFSET]);
9251 if (pkt_offset > wowlan->max_pkt_offset)
9252 goto error;
9253 new_triggers.patterns[i].pkt_offset = pkt_offset;
9254
9255 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9256 if (!mask_pat) {
9257 err = -ENOMEM;
9258 goto error;
9259 }
9260 new_triggers.patterns[i].mask = mask_pat;
9261 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9262 mask_len);
9263 mask_pat += mask_len;
9264 new_triggers.patterns[i].pattern = mask_pat;
9265 new_triggers.patterns[i].pattern_len = pat_len;
9266 memcpy(mask_pat,
9267 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9268 pat_len);
9269 i++;
9270 }
9271 }
9272
9273 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9274 regular = true;
9275 err = nl80211_parse_wowlan_tcp(
9276 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9277 &new_triggers);
9278 if (err)
9279 goto error;
9280 }
9281
9282 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9283 regular = true;
9284 err = nl80211_parse_wowlan_nd(
9285 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9286 &new_triggers);
9287 if (err)
9288 goto error;
9289 }
9290
9291 /* The 'any' trigger means the device continues operating more or less
9292 * as in its normal operation mode and wakes up the host on most of the
9293 * normal interrupts (like packet RX, ...)
9294 * It therefore makes little sense to combine with the more constrained
9295 * wakeup trigger modes.
9296 */
9297 if (new_triggers.any && regular) {
9298 err = -EINVAL;
9299 goto error;
9300 }
9301
9302 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9303 if (!ntrig) {
9304 err = -ENOMEM;
9305 goto error;
9306 }
9307 cfg80211_rdev_free_wowlan(rdev);
9308 rdev->wiphy.wowlan_config = ntrig;
9309
9310 set_wakeup:
9311 if (rdev->ops->set_wakeup &&
9312 prev_enabled != !!rdev->wiphy.wowlan_config)
9313 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9314
9315 return 0;
9316 error:
9317 for (i = 0; i < new_triggers.n_patterns; i++)
9318 kfree(new_triggers.patterns[i].mask);
9319 kfree(new_triggers.patterns);
9320 if (new_triggers.tcp && new_triggers.tcp->sock)
9321 sock_release(new_triggers.tcp->sock);
9322 kfree(new_triggers.tcp);
9323 return err;
9324 }
9325 #endif
9326
9327 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9328 struct cfg80211_registered_device *rdev)
9329 {
9330 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9331 int i, j, pat_len;
9332 struct cfg80211_coalesce_rules *rule;
9333
9334 if (!rdev->coalesce->n_rules)
9335 return 0;
9336
9337 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9338 if (!nl_rules)
9339 return -ENOBUFS;
9340
9341 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9342 nl_rule = nla_nest_start(msg, i + 1);
9343 if (!nl_rule)
9344 return -ENOBUFS;
9345
9346 rule = &rdev->coalesce->rules[i];
9347 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9348 rule->delay))
9349 return -ENOBUFS;
9350
9351 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9352 rule->condition))
9353 return -ENOBUFS;
9354
9355 nl_pats = nla_nest_start(msg,
9356 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9357 if (!nl_pats)
9358 return -ENOBUFS;
9359
9360 for (j = 0; j < rule->n_patterns; j++) {
9361 nl_pat = nla_nest_start(msg, j + 1);
9362 if (!nl_pat)
9363 return -ENOBUFS;
9364 pat_len = rule->patterns[j].pattern_len;
9365 if (nla_put(msg, NL80211_PKTPAT_MASK,
9366 DIV_ROUND_UP(pat_len, 8),
9367 rule->patterns[j].mask) ||
9368 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9369 rule->patterns[j].pattern) ||
9370 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9371 rule->patterns[j].pkt_offset))
9372 return -ENOBUFS;
9373 nla_nest_end(msg, nl_pat);
9374 }
9375 nla_nest_end(msg, nl_pats);
9376 nla_nest_end(msg, nl_rule);
9377 }
9378 nla_nest_end(msg, nl_rules);
9379
9380 return 0;
9381 }
9382
9383 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9384 {
9385 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9386 struct sk_buff *msg;
9387 void *hdr;
9388
9389 if (!rdev->wiphy.coalesce)
9390 return -EOPNOTSUPP;
9391
9392 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9393 if (!msg)
9394 return -ENOMEM;
9395
9396 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9397 NL80211_CMD_GET_COALESCE);
9398 if (!hdr)
9399 goto nla_put_failure;
9400
9401 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9402 goto nla_put_failure;
9403
9404 genlmsg_end(msg, hdr);
9405 return genlmsg_reply(msg, info);
9406
9407 nla_put_failure:
9408 nlmsg_free(msg);
9409 return -ENOBUFS;
9410 }
9411
9412 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9413 {
9414 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9415 int i, j;
9416 struct cfg80211_coalesce_rules *rule;
9417
9418 if (!coalesce)
9419 return;
9420
9421 for (i = 0; i < coalesce->n_rules; i++) {
9422 rule = &coalesce->rules[i];
9423 for (j = 0; j < rule->n_patterns; j++)
9424 kfree(rule->patterns[j].mask);
9425 kfree(rule->patterns);
9426 }
9427 kfree(coalesce->rules);
9428 kfree(coalesce);
9429 rdev->coalesce = NULL;
9430 }
9431
9432 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9433 struct nlattr *rule,
9434 struct cfg80211_coalesce_rules *new_rule)
9435 {
9436 int err, i;
9437 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9438 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9439 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9440 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9441
9442 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9443 nla_len(rule), nl80211_coalesce_policy);
9444 if (err)
9445 return err;
9446
9447 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9448 new_rule->delay =
9449 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9450 if (new_rule->delay > coalesce->max_delay)
9451 return -EINVAL;
9452
9453 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9454 new_rule->condition =
9455 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9456 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9457 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9458 return -EINVAL;
9459
9460 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9461 return -EINVAL;
9462
9463 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9464 rem)
9465 n_patterns++;
9466 if (n_patterns > coalesce->n_patterns)
9467 return -EINVAL;
9468
9469 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9470 GFP_KERNEL);
9471 if (!new_rule->patterns)
9472 return -ENOMEM;
9473
9474 new_rule->n_patterns = n_patterns;
9475 i = 0;
9476
9477 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9478 rem) {
9479 u8 *mask_pat;
9480
9481 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9482 nla_len(pat), NULL);
9483 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9484 !pat_tb[NL80211_PKTPAT_PATTERN])
9485 return -EINVAL;
9486 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9487 mask_len = DIV_ROUND_UP(pat_len, 8);
9488 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9489 return -EINVAL;
9490 if (pat_len > coalesce->pattern_max_len ||
9491 pat_len < coalesce->pattern_min_len)
9492 return -EINVAL;
9493
9494 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9495 pkt_offset = 0;
9496 else
9497 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9498 if (pkt_offset > coalesce->max_pkt_offset)
9499 return -EINVAL;
9500 new_rule->patterns[i].pkt_offset = pkt_offset;
9501
9502 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9503 if (!mask_pat)
9504 return -ENOMEM;
9505
9506 new_rule->patterns[i].mask = mask_pat;
9507 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9508 mask_len);
9509
9510 mask_pat += mask_len;
9511 new_rule->patterns[i].pattern = mask_pat;
9512 new_rule->patterns[i].pattern_len = pat_len;
9513 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9514 pat_len);
9515 i++;
9516 }
9517
9518 return 0;
9519 }
9520
9521 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9522 {
9523 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9524 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9525 struct cfg80211_coalesce new_coalesce = {};
9526 struct cfg80211_coalesce *n_coalesce;
9527 int err, rem_rule, n_rules = 0, i, j;
9528 struct nlattr *rule;
9529 struct cfg80211_coalesce_rules *tmp_rule;
9530
9531 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9532 return -EOPNOTSUPP;
9533
9534 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9535 cfg80211_rdev_free_coalesce(rdev);
9536 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9537 return 0;
9538 }
9539
9540 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9541 rem_rule)
9542 n_rules++;
9543 if (n_rules > coalesce->n_rules)
9544 return -EINVAL;
9545
9546 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9547 GFP_KERNEL);
9548 if (!new_coalesce.rules)
9549 return -ENOMEM;
9550
9551 new_coalesce.n_rules = n_rules;
9552 i = 0;
9553
9554 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9555 rem_rule) {
9556 err = nl80211_parse_coalesce_rule(rdev, rule,
9557 &new_coalesce.rules[i]);
9558 if (err)
9559 goto error;
9560
9561 i++;
9562 }
9563
9564 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9565 if (err)
9566 goto error;
9567
9568 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9569 if (!n_coalesce) {
9570 err = -ENOMEM;
9571 goto error;
9572 }
9573 cfg80211_rdev_free_coalesce(rdev);
9574 rdev->coalesce = n_coalesce;
9575
9576 return 0;
9577 error:
9578 for (i = 0; i < new_coalesce.n_rules; i++) {
9579 tmp_rule = &new_coalesce.rules[i];
9580 for (j = 0; j < tmp_rule->n_patterns; j++)
9581 kfree(tmp_rule->patterns[j].mask);
9582 kfree(tmp_rule->patterns);
9583 }
9584 kfree(new_coalesce.rules);
9585
9586 return err;
9587 }
9588
9589 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9590 {
9591 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9592 struct net_device *dev = info->user_ptr[1];
9593 struct wireless_dev *wdev = dev->ieee80211_ptr;
9594 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9595 struct cfg80211_gtk_rekey_data rekey_data;
9596 int err;
9597
9598 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9599 return -EINVAL;
9600
9601 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9602 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9603 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9604 nl80211_rekey_policy);
9605 if (err)
9606 return err;
9607
9608 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9609 return -ERANGE;
9610 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9611 return -ERANGE;
9612 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9613 return -ERANGE;
9614
9615 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9616 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9617 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9618
9619 wdev_lock(wdev);
9620 if (!wdev->current_bss) {
9621 err = -ENOTCONN;
9622 goto out;
9623 }
9624
9625 if (!rdev->ops->set_rekey_data) {
9626 err = -EOPNOTSUPP;
9627 goto out;
9628 }
9629
9630 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9631 out:
9632 wdev_unlock(wdev);
9633 return err;
9634 }
9635
9636 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9637 struct genl_info *info)
9638 {
9639 struct net_device *dev = info->user_ptr[1];
9640 struct wireless_dev *wdev = dev->ieee80211_ptr;
9641
9642 if (wdev->iftype != NL80211_IFTYPE_AP &&
9643 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9644 return -EINVAL;
9645
9646 if (wdev->ap_unexpected_nlportid)
9647 return -EBUSY;
9648
9649 wdev->ap_unexpected_nlportid = info->snd_portid;
9650 return 0;
9651 }
9652
9653 static int nl80211_probe_client(struct sk_buff *skb,
9654 struct genl_info *info)
9655 {
9656 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9657 struct net_device *dev = info->user_ptr[1];
9658 struct wireless_dev *wdev = dev->ieee80211_ptr;
9659 struct sk_buff *msg;
9660 void *hdr;
9661 const u8 *addr;
9662 u64 cookie;
9663 int err;
9664
9665 if (wdev->iftype != NL80211_IFTYPE_AP &&
9666 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9667 return -EOPNOTSUPP;
9668
9669 if (!info->attrs[NL80211_ATTR_MAC])
9670 return -EINVAL;
9671
9672 if (!rdev->ops->probe_client)
9673 return -EOPNOTSUPP;
9674
9675 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9676 if (!msg)
9677 return -ENOMEM;
9678
9679 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9680 NL80211_CMD_PROBE_CLIENT);
9681 if (!hdr) {
9682 err = -ENOBUFS;
9683 goto free_msg;
9684 }
9685
9686 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9687
9688 err = rdev_probe_client(rdev, dev, addr, &cookie);
9689 if (err)
9690 goto free_msg;
9691
9692 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9693 goto nla_put_failure;
9694
9695 genlmsg_end(msg, hdr);
9696
9697 return genlmsg_reply(msg, info);
9698
9699 nla_put_failure:
9700 err = -ENOBUFS;
9701 free_msg:
9702 nlmsg_free(msg);
9703 return err;
9704 }
9705
9706 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9707 {
9708 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9709 struct cfg80211_beacon_registration *reg, *nreg;
9710 int rv;
9711
9712 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9713 return -EOPNOTSUPP;
9714
9715 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9716 if (!nreg)
9717 return -ENOMEM;
9718
9719 /* First, check if already registered. */
9720 spin_lock_bh(&rdev->beacon_registrations_lock);
9721 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9722 if (reg->nlportid == info->snd_portid) {
9723 rv = -EALREADY;
9724 goto out_err;
9725 }
9726 }
9727 /* Add it to the list */
9728 nreg->nlportid = info->snd_portid;
9729 list_add(&nreg->list, &rdev->beacon_registrations);
9730
9731 spin_unlock_bh(&rdev->beacon_registrations_lock);
9732
9733 return 0;
9734 out_err:
9735 spin_unlock_bh(&rdev->beacon_registrations_lock);
9736 kfree(nreg);
9737 return rv;
9738 }
9739
9740 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9741 {
9742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9743 struct wireless_dev *wdev = info->user_ptr[1];
9744 int err;
9745
9746 if (!rdev->ops->start_p2p_device)
9747 return -EOPNOTSUPP;
9748
9749 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9750 return -EOPNOTSUPP;
9751
9752 if (wdev->p2p_started)
9753 return 0;
9754
9755 if (rfkill_blocked(rdev->rfkill))
9756 return -ERFKILL;
9757
9758 err = rdev_start_p2p_device(rdev, wdev);
9759 if (err)
9760 return err;
9761
9762 wdev->p2p_started = true;
9763 rdev->opencount++;
9764
9765 return 0;
9766 }
9767
9768 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9769 {
9770 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9771 struct wireless_dev *wdev = info->user_ptr[1];
9772
9773 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9774 return -EOPNOTSUPP;
9775
9776 if (!rdev->ops->stop_p2p_device)
9777 return -EOPNOTSUPP;
9778
9779 cfg80211_stop_p2p_device(rdev, wdev);
9780
9781 return 0;
9782 }
9783
9784 static int nl80211_get_protocol_features(struct sk_buff *skb,
9785 struct genl_info *info)
9786 {
9787 void *hdr;
9788 struct sk_buff *msg;
9789
9790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9791 if (!msg)
9792 return -ENOMEM;
9793
9794 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9795 NL80211_CMD_GET_PROTOCOL_FEATURES);
9796 if (!hdr)
9797 goto nla_put_failure;
9798
9799 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9800 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9801 goto nla_put_failure;
9802
9803 genlmsg_end(msg, hdr);
9804 return genlmsg_reply(msg, info);
9805
9806 nla_put_failure:
9807 kfree_skb(msg);
9808 return -ENOBUFS;
9809 }
9810
9811 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9812 {
9813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9814 struct cfg80211_update_ft_ies_params ft_params;
9815 struct net_device *dev = info->user_ptr[1];
9816
9817 if (!rdev->ops->update_ft_ies)
9818 return -EOPNOTSUPP;
9819
9820 if (!info->attrs[NL80211_ATTR_MDID] ||
9821 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9822 return -EINVAL;
9823
9824 memset(&ft_params, 0, sizeof(ft_params));
9825 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9826 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9827 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9828
9829 return rdev_update_ft_ies(rdev, dev, &ft_params);
9830 }
9831
9832 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9833 struct genl_info *info)
9834 {
9835 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9836 struct wireless_dev *wdev = info->user_ptr[1];
9837 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9838 u16 duration;
9839 int ret;
9840
9841 if (!rdev->ops->crit_proto_start)
9842 return -EOPNOTSUPP;
9843
9844 if (WARN_ON(!rdev->ops->crit_proto_stop))
9845 return -EINVAL;
9846
9847 if (rdev->crit_proto_nlportid)
9848 return -EBUSY;
9849
9850 /* determine protocol if provided */
9851 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9852 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9853
9854 if (proto >= NUM_NL80211_CRIT_PROTO)
9855 return -EINVAL;
9856
9857 /* timeout must be provided */
9858 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9859 return -EINVAL;
9860
9861 duration =
9862 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9863
9864 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9865 return -ERANGE;
9866
9867 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9868 if (!ret)
9869 rdev->crit_proto_nlportid = info->snd_portid;
9870
9871 return ret;
9872 }
9873
9874 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9875 struct genl_info *info)
9876 {
9877 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9878 struct wireless_dev *wdev = info->user_ptr[1];
9879
9880 if (!rdev->ops->crit_proto_stop)
9881 return -EOPNOTSUPP;
9882
9883 if (rdev->crit_proto_nlportid) {
9884 rdev->crit_proto_nlportid = 0;
9885 rdev_crit_proto_stop(rdev, wdev);
9886 }
9887 return 0;
9888 }
9889
9890 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9891 {
9892 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9893 struct wireless_dev *wdev =
9894 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9895 int i, err;
9896 u32 vid, subcmd;
9897
9898 if (!rdev->wiphy.vendor_commands)
9899 return -EOPNOTSUPP;
9900
9901 if (IS_ERR(wdev)) {
9902 err = PTR_ERR(wdev);
9903 if (err != -EINVAL)
9904 return err;
9905 wdev = NULL;
9906 } else if (wdev->wiphy != &rdev->wiphy) {
9907 return -EINVAL;
9908 }
9909
9910 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9911 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9912 return -EINVAL;
9913
9914 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9915 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9916 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9917 const struct wiphy_vendor_command *vcmd;
9918 void *data = NULL;
9919 int len = 0;
9920
9921 vcmd = &rdev->wiphy.vendor_commands[i];
9922
9923 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9924 continue;
9925
9926 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9927 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9928 if (!wdev)
9929 return -EINVAL;
9930 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9931 !wdev->netdev)
9932 return -EINVAL;
9933
9934 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9935 if (wdev->netdev &&
9936 !netif_running(wdev->netdev))
9937 return -ENETDOWN;
9938 if (!wdev->netdev && !wdev->p2p_started)
9939 return -ENETDOWN;
9940 }
9941 } else {
9942 wdev = NULL;
9943 }
9944
9945 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9946 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9947 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9948 }
9949
9950 rdev->cur_cmd_info = info;
9951 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9952 data, len);
9953 rdev->cur_cmd_info = NULL;
9954 return err;
9955 }
9956
9957 return -EOPNOTSUPP;
9958 }
9959
9960 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9961 enum nl80211_commands cmd,
9962 enum nl80211_attrs attr,
9963 int approxlen)
9964 {
9965 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9966
9967 if (WARN_ON(!rdev->cur_cmd_info))
9968 return NULL;
9969
9970 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
9971 rdev->cur_cmd_info->snd_portid,
9972 rdev->cur_cmd_info->snd_seq,
9973 cmd, attr, NULL, GFP_KERNEL);
9974 }
9975 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9976
9977 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9978 {
9979 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9980 void *hdr = ((void **)skb->cb)[1];
9981 struct nlattr *data = ((void **)skb->cb)[2];
9982
9983 /* clear CB data for netlink core to own from now on */
9984 memset(skb->cb, 0, sizeof(skb->cb));
9985
9986 if (WARN_ON(!rdev->cur_cmd_info)) {
9987 kfree_skb(skb);
9988 return -EINVAL;
9989 }
9990
9991 nla_nest_end(skb, data);
9992 genlmsg_end(skb, hdr);
9993 return genlmsg_reply(skb, rdev->cur_cmd_info);
9994 }
9995 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9996
9997
9998 static int nl80211_set_qos_map(struct sk_buff *skb,
9999 struct genl_info *info)
10000 {
10001 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10002 struct cfg80211_qos_map *qos_map = NULL;
10003 struct net_device *dev = info->user_ptr[1];
10004 u8 *pos, len, num_des, des_len, des;
10005 int ret;
10006
10007 if (!rdev->ops->set_qos_map)
10008 return -EOPNOTSUPP;
10009
10010 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10011 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10012 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10013
10014 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10015 len > IEEE80211_QOS_MAP_LEN_MAX)
10016 return -EINVAL;
10017
10018 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10019 if (!qos_map)
10020 return -ENOMEM;
10021
10022 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10023 if (num_des) {
10024 des_len = num_des *
10025 sizeof(struct cfg80211_dscp_exception);
10026 memcpy(qos_map->dscp_exception, pos, des_len);
10027 qos_map->num_des = num_des;
10028 for (des = 0; des < num_des; des++) {
10029 if (qos_map->dscp_exception[des].up > 7) {
10030 kfree(qos_map);
10031 return -EINVAL;
10032 }
10033 }
10034 pos += des_len;
10035 }
10036 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10037 }
10038
10039 wdev_lock(dev->ieee80211_ptr);
10040 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10041 if (!ret)
10042 ret = rdev_set_qos_map(rdev, dev, qos_map);
10043 wdev_unlock(dev->ieee80211_ptr);
10044
10045 kfree(qos_map);
10046 return ret;
10047 }
10048
10049 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10050 {
10051 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10052 struct net_device *dev = info->user_ptr[1];
10053 struct wireless_dev *wdev = dev->ieee80211_ptr;
10054 const u8 *peer;
10055 u8 tsid, up;
10056 u16 admitted_time = 0;
10057 int err;
10058
10059 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10060 return -EOPNOTSUPP;
10061
10062 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10063 !info->attrs[NL80211_ATTR_USER_PRIO])
10064 return -EINVAL;
10065
10066 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10067 if (tsid >= IEEE80211_NUM_TIDS)
10068 return -EINVAL;
10069
10070 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10071 if (up >= IEEE80211_NUM_UPS)
10072 return -EINVAL;
10073
10074 /* WMM uses TIDs 0-7 even for TSPEC */
10075 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10076 /* TODO: handle 802.11 TSPEC/admission control
10077 * need more attributes for that (e.g. BA session requirement);
10078 * change the WMM adminssion test above to allow both then
10079 */
10080 return -EINVAL;
10081 }
10082
10083 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10084
10085 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10086 admitted_time =
10087 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10088 if (!admitted_time)
10089 return -EINVAL;
10090 }
10091
10092 wdev_lock(wdev);
10093 switch (wdev->iftype) {
10094 case NL80211_IFTYPE_STATION:
10095 case NL80211_IFTYPE_P2P_CLIENT:
10096 if (wdev->current_bss)
10097 break;
10098 err = -ENOTCONN;
10099 goto out;
10100 default:
10101 err = -EOPNOTSUPP;
10102 goto out;
10103 }
10104
10105 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10106
10107 out:
10108 wdev_unlock(wdev);
10109 return err;
10110 }
10111
10112 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10113 {
10114 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10115 struct net_device *dev = info->user_ptr[1];
10116 struct wireless_dev *wdev = dev->ieee80211_ptr;
10117 const u8 *peer;
10118 u8 tsid;
10119 int err;
10120
10121 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10122 return -EINVAL;
10123
10124 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10125 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10126
10127 wdev_lock(wdev);
10128 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10129 wdev_unlock(wdev);
10130
10131 return err;
10132 }
10133
10134 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10135 struct genl_info *info)
10136 {
10137 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10138 struct net_device *dev = info->user_ptr[1];
10139 struct wireless_dev *wdev = dev->ieee80211_ptr;
10140 struct cfg80211_chan_def chandef = {};
10141 const u8 *addr;
10142 u8 oper_class;
10143 int err;
10144
10145 if (!rdev->ops->tdls_channel_switch ||
10146 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10147 return -EOPNOTSUPP;
10148
10149 switch (dev->ieee80211_ptr->iftype) {
10150 case NL80211_IFTYPE_STATION:
10151 case NL80211_IFTYPE_P2P_CLIENT:
10152 break;
10153 default:
10154 return -EOPNOTSUPP;
10155 }
10156
10157 if (!info->attrs[NL80211_ATTR_MAC] ||
10158 !info->attrs[NL80211_ATTR_OPER_CLASS])
10159 return -EINVAL;
10160
10161 err = nl80211_parse_chandef(rdev, info, &chandef);
10162 if (err)
10163 return err;
10164
10165 /*
10166 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10167 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10168 * specification is not defined for them.
10169 */
10170 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10171 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10172 chandef.width != NL80211_CHAN_WIDTH_20)
10173 return -EINVAL;
10174
10175 /* we will be active on the TDLS link */
10176 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10177 wdev->iftype))
10178 return -EINVAL;
10179
10180 /* don't allow switching to DFS channels */
10181 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10182 return -EINVAL;
10183
10184 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10185 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10186
10187 wdev_lock(wdev);
10188 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10189 wdev_unlock(wdev);
10190
10191 return err;
10192 }
10193
10194 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10195 struct genl_info *info)
10196 {
10197 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10198 struct net_device *dev = info->user_ptr[1];
10199 struct wireless_dev *wdev = dev->ieee80211_ptr;
10200 const u8 *addr;
10201
10202 if (!rdev->ops->tdls_channel_switch ||
10203 !rdev->ops->tdls_cancel_channel_switch ||
10204 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10205 return -EOPNOTSUPP;
10206
10207 switch (dev->ieee80211_ptr->iftype) {
10208 case NL80211_IFTYPE_STATION:
10209 case NL80211_IFTYPE_P2P_CLIENT:
10210 break;
10211 default:
10212 return -EOPNOTSUPP;
10213 }
10214
10215 if (!info->attrs[NL80211_ATTR_MAC])
10216 return -EINVAL;
10217
10218 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10219
10220 wdev_lock(wdev);
10221 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10222 wdev_unlock(wdev);
10223
10224 return 0;
10225 }
10226
10227 #define NL80211_FLAG_NEED_WIPHY 0x01
10228 #define NL80211_FLAG_NEED_NETDEV 0x02
10229 #define NL80211_FLAG_NEED_RTNL 0x04
10230 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10231 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10232 NL80211_FLAG_CHECK_NETDEV_UP)
10233 #define NL80211_FLAG_NEED_WDEV 0x10
10234 /* If a netdev is associated, it must be UP, P2P must be started */
10235 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10236 NL80211_FLAG_CHECK_NETDEV_UP)
10237 #define NL80211_FLAG_CLEAR_SKB 0x20
10238
10239 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10240 struct genl_info *info)
10241 {
10242 struct cfg80211_registered_device *rdev;
10243 struct wireless_dev *wdev;
10244 struct net_device *dev;
10245 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10246
10247 if (rtnl)
10248 rtnl_lock();
10249
10250 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10251 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10252 if (IS_ERR(rdev)) {
10253 if (rtnl)
10254 rtnl_unlock();
10255 return PTR_ERR(rdev);
10256 }
10257 info->user_ptr[0] = rdev;
10258 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10259 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10260 ASSERT_RTNL();
10261
10262 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10263 info->attrs);
10264 if (IS_ERR(wdev)) {
10265 if (rtnl)
10266 rtnl_unlock();
10267 return PTR_ERR(wdev);
10268 }
10269
10270 dev = wdev->netdev;
10271 rdev = wiphy_to_rdev(wdev->wiphy);
10272
10273 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10274 if (!dev) {
10275 if (rtnl)
10276 rtnl_unlock();
10277 return -EINVAL;
10278 }
10279
10280 info->user_ptr[1] = dev;
10281 } else {
10282 info->user_ptr[1] = wdev;
10283 }
10284
10285 if (dev) {
10286 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10287 !netif_running(dev)) {
10288 if (rtnl)
10289 rtnl_unlock();
10290 return -ENETDOWN;
10291 }
10292
10293 dev_hold(dev);
10294 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10295 if (!wdev->p2p_started) {
10296 if (rtnl)
10297 rtnl_unlock();
10298 return -ENETDOWN;
10299 }
10300 }
10301
10302 info->user_ptr[0] = rdev;
10303 }
10304
10305 return 0;
10306 }
10307
10308 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10309 struct genl_info *info)
10310 {
10311 if (info->user_ptr[1]) {
10312 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10313 struct wireless_dev *wdev = info->user_ptr[1];
10314
10315 if (wdev->netdev)
10316 dev_put(wdev->netdev);
10317 } else {
10318 dev_put(info->user_ptr[1]);
10319 }
10320 }
10321
10322 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10323 rtnl_unlock();
10324
10325 /* If needed, clear the netlink message payload from the SKB
10326 * as it might contain key data that shouldn't stick around on
10327 * the heap after the SKB is freed. The netlink message header
10328 * is still needed for further processing, so leave it intact.
10329 */
10330 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10331 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10332
10333 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10334 }
10335 }
10336
10337 static const struct genl_ops nl80211_ops[] = {
10338 {
10339 .cmd = NL80211_CMD_GET_WIPHY,
10340 .doit = nl80211_get_wiphy,
10341 .dumpit = nl80211_dump_wiphy,
10342 .done = nl80211_dump_wiphy_done,
10343 .policy = nl80211_policy,
10344 /* can be retrieved by unprivileged users */
10345 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10346 NL80211_FLAG_NEED_RTNL,
10347 },
10348 {
10349 .cmd = NL80211_CMD_SET_WIPHY,
10350 .doit = nl80211_set_wiphy,
10351 .policy = nl80211_policy,
10352 .flags = GENL_ADMIN_PERM,
10353 .internal_flags = NL80211_FLAG_NEED_RTNL,
10354 },
10355 {
10356 .cmd = NL80211_CMD_GET_INTERFACE,
10357 .doit = nl80211_get_interface,
10358 .dumpit = nl80211_dump_interface,
10359 .policy = nl80211_policy,
10360 /* can be retrieved by unprivileged users */
10361 .internal_flags = NL80211_FLAG_NEED_WDEV |
10362 NL80211_FLAG_NEED_RTNL,
10363 },
10364 {
10365 .cmd = NL80211_CMD_SET_INTERFACE,
10366 .doit = nl80211_set_interface,
10367 .policy = nl80211_policy,
10368 .flags = GENL_ADMIN_PERM,
10369 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10370 NL80211_FLAG_NEED_RTNL,
10371 },
10372 {
10373 .cmd = NL80211_CMD_NEW_INTERFACE,
10374 .doit = nl80211_new_interface,
10375 .policy = nl80211_policy,
10376 .flags = GENL_ADMIN_PERM,
10377 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10378 NL80211_FLAG_NEED_RTNL,
10379 },
10380 {
10381 .cmd = NL80211_CMD_DEL_INTERFACE,
10382 .doit = nl80211_del_interface,
10383 .policy = nl80211_policy,
10384 .flags = GENL_ADMIN_PERM,
10385 .internal_flags = NL80211_FLAG_NEED_WDEV |
10386 NL80211_FLAG_NEED_RTNL,
10387 },
10388 {
10389 .cmd = NL80211_CMD_GET_KEY,
10390 .doit = nl80211_get_key,
10391 .policy = nl80211_policy,
10392 .flags = GENL_ADMIN_PERM,
10393 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10394 NL80211_FLAG_NEED_RTNL,
10395 },
10396 {
10397 .cmd = NL80211_CMD_SET_KEY,
10398 .doit = nl80211_set_key,
10399 .policy = nl80211_policy,
10400 .flags = GENL_ADMIN_PERM,
10401 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10402 NL80211_FLAG_NEED_RTNL |
10403 NL80211_FLAG_CLEAR_SKB,
10404 },
10405 {
10406 .cmd = NL80211_CMD_NEW_KEY,
10407 .doit = nl80211_new_key,
10408 .policy = nl80211_policy,
10409 .flags = GENL_ADMIN_PERM,
10410 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10411 NL80211_FLAG_NEED_RTNL |
10412 NL80211_FLAG_CLEAR_SKB,
10413 },
10414 {
10415 .cmd = NL80211_CMD_DEL_KEY,
10416 .doit = nl80211_del_key,
10417 .policy = nl80211_policy,
10418 .flags = GENL_ADMIN_PERM,
10419 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10420 NL80211_FLAG_NEED_RTNL,
10421 },
10422 {
10423 .cmd = NL80211_CMD_SET_BEACON,
10424 .policy = nl80211_policy,
10425 .flags = GENL_ADMIN_PERM,
10426 .doit = nl80211_set_beacon,
10427 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10428 NL80211_FLAG_NEED_RTNL,
10429 },
10430 {
10431 .cmd = NL80211_CMD_START_AP,
10432 .policy = nl80211_policy,
10433 .flags = GENL_ADMIN_PERM,
10434 .doit = nl80211_start_ap,
10435 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10436 NL80211_FLAG_NEED_RTNL,
10437 },
10438 {
10439 .cmd = NL80211_CMD_STOP_AP,
10440 .policy = nl80211_policy,
10441 .flags = GENL_ADMIN_PERM,
10442 .doit = nl80211_stop_ap,
10443 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10444 NL80211_FLAG_NEED_RTNL,
10445 },
10446 {
10447 .cmd = NL80211_CMD_GET_STATION,
10448 .doit = nl80211_get_station,
10449 .dumpit = nl80211_dump_station,
10450 .policy = nl80211_policy,
10451 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10452 NL80211_FLAG_NEED_RTNL,
10453 },
10454 {
10455 .cmd = NL80211_CMD_SET_STATION,
10456 .doit = nl80211_set_station,
10457 .policy = nl80211_policy,
10458 .flags = GENL_ADMIN_PERM,
10459 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10460 NL80211_FLAG_NEED_RTNL,
10461 },
10462 {
10463 .cmd = NL80211_CMD_NEW_STATION,
10464 .doit = nl80211_new_station,
10465 .policy = nl80211_policy,
10466 .flags = GENL_ADMIN_PERM,
10467 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10468 NL80211_FLAG_NEED_RTNL,
10469 },
10470 {
10471 .cmd = NL80211_CMD_DEL_STATION,
10472 .doit = nl80211_del_station,
10473 .policy = nl80211_policy,
10474 .flags = GENL_ADMIN_PERM,
10475 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10476 NL80211_FLAG_NEED_RTNL,
10477 },
10478 {
10479 .cmd = NL80211_CMD_GET_MPATH,
10480 .doit = nl80211_get_mpath,
10481 .dumpit = nl80211_dump_mpath,
10482 .policy = nl80211_policy,
10483 .flags = GENL_ADMIN_PERM,
10484 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10485 NL80211_FLAG_NEED_RTNL,
10486 },
10487 {
10488 .cmd = NL80211_CMD_GET_MPP,
10489 .doit = nl80211_get_mpp,
10490 .dumpit = nl80211_dump_mpp,
10491 .policy = nl80211_policy,
10492 .flags = GENL_ADMIN_PERM,
10493 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10494 NL80211_FLAG_NEED_RTNL,
10495 },
10496 {
10497 .cmd = NL80211_CMD_SET_MPATH,
10498 .doit = nl80211_set_mpath,
10499 .policy = nl80211_policy,
10500 .flags = GENL_ADMIN_PERM,
10501 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10502 NL80211_FLAG_NEED_RTNL,
10503 },
10504 {
10505 .cmd = NL80211_CMD_NEW_MPATH,
10506 .doit = nl80211_new_mpath,
10507 .policy = nl80211_policy,
10508 .flags = GENL_ADMIN_PERM,
10509 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10510 NL80211_FLAG_NEED_RTNL,
10511 },
10512 {
10513 .cmd = NL80211_CMD_DEL_MPATH,
10514 .doit = nl80211_del_mpath,
10515 .policy = nl80211_policy,
10516 .flags = GENL_ADMIN_PERM,
10517 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10518 NL80211_FLAG_NEED_RTNL,
10519 },
10520 {
10521 .cmd = NL80211_CMD_SET_BSS,
10522 .doit = nl80211_set_bss,
10523 .policy = nl80211_policy,
10524 .flags = GENL_ADMIN_PERM,
10525 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10526 NL80211_FLAG_NEED_RTNL,
10527 },
10528 {
10529 .cmd = NL80211_CMD_GET_REG,
10530 .doit = nl80211_get_reg_do,
10531 .dumpit = nl80211_get_reg_dump,
10532 .policy = nl80211_policy,
10533 .internal_flags = NL80211_FLAG_NEED_RTNL,
10534 /* can be retrieved by unprivileged users */
10535 },
10536 {
10537 .cmd = NL80211_CMD_SET_REG,
10538 .doit = nl80211_set_reg,
10539 .policy = nl80211_policy,
10540 .flags = GENL_ADMIN_PERM,
10541 .internal_flags = NL80211_FLAG_NEED_RTNL,
10542 },
10543 {
10544 .cmd = NL80211_CMD_REQ_SET_REG,
10545 .doit = nl80211_req_set_reg,
10546 .policy = nl80211_policy,
10547 .flags = GENL_ADMIN_PERM,
10548 },
10549 {
10550 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10551 .doit = nl80211_get_mesh_config,
10552 .policy = nl80211_policy,
10553 /* can be retrieved by unprivileged users */
10554 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10555 NL80211_FLAG_NEED_RTNL,
10556 },
10557 {
10558 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10559 .doit = nl80211_update_mesh_config,
10560 .policy = nl80211_policy,
10561 .flags = GENL_ADMIN_PERM,
10562 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10563 NL80211_FLAG_NEED_RTNL,
10564 },
10565 {
10566 .cmd = NL80211_CMD_TRIGGER_SCAN,
10567 .doit = nl80211_trigger_scan,
10568 .policy = nl80211_policy,
10569 .flags = GENL_ADMIN_PERM,
10570 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10571 NL80211_FLAG_NEED_RTNL,
10572 },
10573 {
10574 .cmd = NL80211_CMD_GET_SCAN,
10575 .policy = nl80211_policy,
10576 .dumpit = nl80211_dump_scan,
10577 },
10578 {
10579 .cmd = NL80211_CMD_START_SCHED_SCAN,
10580 .doit = nl80211_start_sched_scan,
10581 .policy = nl80211_policy,
10582 .flags = GENL_ADMIN_PERM,
10583 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10584 NL80211_FLAG_NEED_RTNL,
10585 },
10586 {
10587 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10588 .doit = nl80211_stop_sched_scan,
10589 .policy = nl80211_policy,
10590 .flags = GENL_ADMIN_PERM,
10591 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10592 NL80211_FLAG_NEED_RTNL,
10593 },
10594 {
10595 .cmd = NL80211_CMD_AUTHENTICATE,
10596 .doit = nl80211_authenticate,
10597 .policy = nl80211_policy,
10598 .flags = GENL_ADMIN_PERM,
10599 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10600 NL80211_FLAG_NEED_RTNL |
10601 NL80211_FLAG_CLEAR_SKB,
10602 },
10603 {
10604 .cmd = NL80211_CMD_ASSOCIATE,
10605 .doit = nl80211_associate,
10606 .policy = nl80211_policy,
10607 .flags = GENL_ADMIN_PERM,
10608 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10609 NL80211_FLAG_NEED_RTNL,
10610 },
10611 {
10612 .cmd = NL80211_CMD_DEAUTHENTICATE,
10613 .doit = nl80211_deauthenticate,
10614 .policy = nl80211_policy,
10615 .flags = GENL_ADMIN_PERM,
10616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10617 NL80211_FLAG_NEED_RTNL,
10618 },
10619 {
10620 .cmd = NL80211_CMD_DISASSOCIATE,
10621 .doit = nl80211_disassociate,
10622 .policy = nl80211_policy,
10623 .flags = GENL_ADMIN_PERM,
10624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10625 NL80211_FLAG_NEED_RTNL,
10626 },
10627 {
10628 .cmd = NL80211_CMD_JOIN_IBSS,
10629 .doit = nl80211_join_ibss,
10630 .policy = nl80211_policy,
10631 .flags = GENL_ADMIN_PERM,
10632 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10633 NL80211_FLAG_NEED_RTNL,
10634 },
10635 {
10636 .cmd = NL80211_CMD_LEAVE_IBSS,
10637 .doit = nl80211_leave_ibss,
10638 .policy = nl80211_policy,
10639 .flags = GENL_ADMIN_PERM,
10640 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10641 NL80211_FLAG_NEED_RTNL,
10642 },
10643 #ifdef CONFIG_NL80211_TESTMODE
10644 {
10645 .cmd = NL80211_CMD_TESTMODE,
10646 .doit = nl80211_testmode_do,
10647 .dumpit = nl80211_testmode_dump,
10648 .policy = nl80211_policy,
10649 .flags = GENL_ADMIN_PERM,
10650 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10651 NL80211_FLAG_NEED_RTNL,
10652 },
10653 #endif
10654 {
10655 .cmd = NL80211_CMD_CONNECT,
10656 .doit = nl80211_connect,
10657 .policy = nl80211_policy,
10658 .flags = GENL_ADMIN_PERM,
10659 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10660 NL80211_FLAG_NEED_RTNL,
10661 },
10662 {
10663 .cmd = NL80211_CMD_DISCONNECT,
10664 .doit = nl80211_disconnect,
10665 .policy = nl80211_policy,
10666 .flags = GENL_ADMIN_PERM,
10667 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10668 NL80211_FLAG_NEED_RTNL,
10669 },
10670 {
10671 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10672 .doit = nl80211_wiphy_netns,
10673 .policy = nl80211_policy,
10674 .flags = GENL_ADMIN_PERM,
10675 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10676 NL80211_FLAG_NEED_RTNL,
10677 },
10678 {
10679 .cmd = NL80211_CMD_GET_SURVEY,
10680 .policy = nl80211_policy,
10681 .dumpit = nl80211_dump_survey,
10682 },
10683 {
10684 .cmd = NL80211_CMD_SET_PMKSA,
10685 .doit = nl80211_setdel_pmksa,
10686 .policy = nl80211_policy,
10687 .flags = GENL_ADMIN_PERM,
10688 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10689 NL80211_FLAG_NEED_RTNL,
10690 },
10691 {
10692 .cmd = NL80211_CMD_DEL_PMKSA,
10693 .doit = nl80211_setdel_pmksa,
10694 .policy = nl80211_policy,
10695 .flags = GENL_ADMIN_PERM,
10696 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10697 NL80211_FLAG_NEED_RTNL,
10698 },
10699 {
10700 .cmd = NL80211_CMD_FLUSH_PMKSA,
10701 .doit = nl80211_flush_pmksa,
10702 .policy = nl80211_policy,
10703 .flags = GENL_ADMIN_PERM,
10704 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10705 NL80211_FLAG_NEED_RTNL,
10706 },
10707 {
10708 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10709 .doit = nl80211_remain_on_channel,
10710 .policy = nl80211_policy,
10711 .flags = GENL_ADMIN_PERM,
10712 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10713 NL80211_FLAG_NEED_RTNL,
10714 },
10715 {
10716 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10717 .doit = nl80211_cancel_remain_on_channel,
10718 .policy = nl80211_policy,
10719 .flags = GENL_ADMIN_PERM,
10720 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10721 NL80211_FLAG_NEED_RTNL,
10722 },
10723 {
10724 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10725 .doit = nl80211_set_tx_bitrate_mask,
10726 .policy = nl80211_policy,
10727 .flags = GENL_ADMIN_PERM,
10728 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10729 NL80211_FLAG_NEED_RTNL,
10730 },
10731 {
10732 .cmd = NL80211_CMD_REGISTER_FRAME,
10733 .doit = nl80211_register_mgmt,
10734 .policy = nl80211_policy,
10735 .flags = GENL_ADMIN_PERM,
10736 .internal_flags = NL80211_FLAG_NEED_WDEV |
10737 NL80211_FLAG_NEED_RTNL,
10738 },
10739 {
10740 .cmd = NL80211_CMD_FRAME,
10741 .doit = nl80211_tx_mgmt,
10742 .policy = nl80211_policy,
10743 .flags = GENL_ADMIN_PERM,
10744 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10745 NL80211_FLAG_NEED_RTNL,
10746 },
10747 {
10748 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10749 .doit = nl80211_tx_mgmt_cancel_wait,
10750 .policy = nl80211_policy,
10751 .flags = GENL_ADMIN_PERM,
10752 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10753 NL80211_FLAG_NEED_RTNL,
10754 },
10755 {
10756 .cmd = NL80211_CMD_SET_POWER_SAVE,
10757 .doit = nl80211_set_power_save,
10758 .policy = nl80211_policy,
10759 .flags = GENL_ADMIN_PERM,
10760 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10761 NL80211_FLAG_NEED_RTNL,
10762 },
10763 {
10764 .cmd = NL80211_CMD_GET_POWER_SAVE,
10765 .doit = nl80211_get_power_save,
10766 .policy = nl80211_policy,
10767 /* can be retrieved by unprivileged users */
10768 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10769 NL80211_FLAG_NEED_RTNL,
10770 },
10771 {
10772 .cmd = NL80211_CMD_SET_CQM,
10773 .doit = nl80211_set_cqm,
10774 .policy = nl80211_policy,
10775 .flags = GENL_ADMIN_PERM,
10776 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10777 NL80211_FLAG_NEED_RTNL,
10778 },
10779 {
10780 .cmd = NL80211_CMD_SET_CHANNEL,
10781 .doit = nl80211_set_channel,
10782 .policy = nl80211_policy,
10783 .flags = GENL_ADMIN_PERM,
10784 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10785 NL80211_FLAG_NEED_RTNL,
10786 },
10787 {
10788 .cmd = NL80211_CMD_SET_WDS_PEER,
10789 .doit = nl80211_set_wds_peer,
10790 .policy = nl80211_policy,
10791 .flags = GENL_ADMIN_PERM,
10792 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10793 NL80211_FLAG_NEED_RTNL,
10794 },
10795 {
10796 .cmd = NL80211_CMD_JOIN_MESH,
10797 .doit = nl80211_join_mesh,
10798 .policy = nl80211_policy,
10799 .flags = GENL_ADMIN_PERM,
10800 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10801 NL80211_FLAG_NEED_RTNL,
10802 },
10803 {
10804 .cmd = NL80211_CMD_LEAVE_MESH,
10805 .doit = nl80211_leave_mesh,
10806 .policy = nl80211_policy,
10807 .flags = GENL_ADMIN_PERM,
10808 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10809 NL80211_FLAG_NEED_RTNL,
10810 },
10811 {
10812 .cmd = NL80211_CMD_JOIN_OCB,
10813 .doit = nl80211_join_ocb,
10814 .policy = nl80211_policy,
10815 .flags = GENL_ADMIN_PERM,
10816 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10817 NL80211_FLAG_NEED_RTNL,
10818 },
10819 {
10820 .cmd = NL80211_CMD_LEAVE_OCB,
10821 .doit = nl80211_leave_ocb,
10822 .policy = nl80211_policy,
10823 .flags = GENL_ADMIN_PERM,
10824 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10825 NL80211_FLAG_NEED_RTNL,
10826 },
10827 #ifdef CONFIG_PM
10828 {
10829 .cmd = NL80211_CMD_GET_WOWLAN,
10830 .doit = nl80211_get_wowlan,
10831 .policy = nl80211_policy,
10832 /* can be retrieved by unprivileged users */
10833 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10834 NL80211_FLAG_NEED_RTNL,
10835 },
10836 {
10837 .cmd = NL80211_CMD_SET_WOWLAN,
10838 .doit = nl80211_set_wowlan,
10839 .policy = nl80211_policy,
10840 .flags = GENL_ADMIN_PERM,
10841 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10842 NL80211_FLAG_NEED_RTNL,
10843 },
10844 #endif
10845 {
10846 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10847 .doit = nl80211_set_rekey_data,
10848 .policy = nl80211_policy,
10849 .flags = GENL_ADMIN_PERM,
10850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10851 NL80211_FLAG_NEED_RTNL |
10852 NL80211_FLAG_CLEAR_SKB,
10853 },
10854 {
10855 .cmd = NL80211_CMD_TDLS_MGMT,
10856 .doit = nl80211_tdls_mgmt,
10857 .policy = nl80211_policy,
10858 .flags = GENL_ADMIN_PERM,
10859 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10860 NL80211_FLAG_NEED_RTNL,
10861 },
10862 {
10863 .cmd = NL80211_CMD_TDLS_OPER,
10864 .doit = nl80211_tdls_oper,
10865 .policy = nl80211_policy,
10866 .flags = GENL_ADMIN_PERM,
10867 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10868 NL80211_FLAG_NEED_RTNL,
10869 },
10870 {
10871 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10872 .doit = nl80211_register_unexpected_frame,
10873 .policy = nl80211_policy,
10874 .flags = GENL_ADMIN_PERM,
10875 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10876 NL80211_FLAG_NEED_RTNL,
10877 },
10878 {
10879 .cmd = NL80211_CMD_PROBE_CLIENT,
10880 .doit = nl80211_probe_client,
10881 .policy = nl80211_policy,
10882 .flags = GENL_ADMIN_PERM,
10883 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10884 NL80211_FLAG_NEED_RTNL,
10885 },
10886 {
10887 .cmd = NL80211_CMD_REGISTER_BEACONS,
10888 .doit = nl80211_register_beacons,
10889 .policy = nl80211_policy,
10890 .flags = GENL_ADMIN_PERM,
10891 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10892 NL80211_FLAG_NEED_RTNL,
10893 },
10894 {
10895 .cmd = NL80211_CMD_SET_NOACK_MAP,
10896 .doit = nl80211_set_noack_map,
10897 .policy = nl80211_policy,
10898 .flags = GENL_ADMIN_PERM,
10899 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10900 NL80211_FLAG_NEED_RTNL,
10901 },
10902 {
10903 .cmd = NL80211_CMD_START_P2P_DEVICE,
10904 .doit = nl80211_start_p2p_device,
10905 .policy = nl80211_policy,
10906 .flags = GENL_ADMIN_PERM,
10907 .internal_flags = NL80211_FLAG_NEED_WDEV |
10908 NL80211_FLAG_NEED_RTNL,
10909 },
10910 {
10911 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10912 .doit = nl80211_stop_p2p_device,
10913 .policy = nl80211_policy,
10914 .flags = GENL_ADMIN_PERM,
10915 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10916 NL80211_FLAG_NEED_RTNL,
10917 },
10918 {
10919 .cmd = NL80211_CMD_SET_MCAST_RATE,
10920 .doit = nl80211_set_mcast_rate,
10921 .policy = nl80211_policy,
10922 .flags = GENL_ADMIN_PERM,
10923 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10924 NL80211_FLAG_NEED_RTNL,
10925 },
10926 {
10927 .cmd = NL80211_CMD_SET_MAC_ACL,
10928 .doit = nl80211_set_mac_acl,
10929 .policy = nl80211_policy,
10930 .flags = GENL_ADMIN_PERM,
10931 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10932 NL80211_FLAG_NEED_RTNL,
10933 },
10934 {
10935 .cmd = NL80211_CMD_RADAR_DETECT,
10936 .doit = nl80211_start_radar_detection,
10937 .policy = nl80211_policy,
10938 .flags = GENL_ADMIN_PERM,
10939 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10940 NL80211_FLAG_NEED_RTNL,
10941 },
10942 {
10943 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10944 .doit = nl80211_get_protocol_features,
10945 .policy = nl80211_policy,
10946 },
10947 {
10948 .cmd = NL80211_CMD_UPDATE_FT_IES,
10949 .doit = nl80211_update_ft_ies,
10950 .policy = nl80211_policy,
10951 .flags = GENL_ADMIN_PERM,
10952 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10953 NL80211_FLAG_NEED_RTNL,
10954 },
10955 {
10956 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10957 .doit = nl80211_crit_protocol_start,
10958 .policy = nl80211_policy,
10959 .flags = GENL_ADMIN_PERM,
10960 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10961 NL80211_FLAG_NEED_RTNL,
10962 },
10963 {
10964 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10965 .doit = nl80211_crit_protocol_stop,
10966 .policy = nl80211_policy,
10967 .flags = GENL_ADMIN_PERM,
10968 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10969 NL80211_FLAG_NEED_RTNL,
10970 },
10971 {
10972 .cmd = NL80211_CMD_GET_COALESCE,
10973 .doit = nl80211_get_coalesce,
10974 .policy = nl80211_policy,
10975 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10976 NL80211_FLAG_NEED_RTNL,
10977 },
10978 {
10979 .cmd = NL80211_CMD_SET_COALESCE,
10980 .doit = nl80211_set_coalesce,
10981 .policy = nl80211_policy,
10982 .flags = GENL_ADMIN_PERM,
10983 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10984 NL80211_FLAG_NEED_RTNL,
10985 },
10986 {
10987 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10988 .doit = nl80211_channel_switch,
10989 .policy = nl80211_policy,
10990 .flags = GENL_ADMIN_PERM,
10991 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10992 NL80211_FLAG_NEED_RTNL,
10993 },
10994 {
10995 .cmd = NL80211_CMD_VENDOR,
10996 .doit = nl80211_vendor_cmd,
10997 .policy = nl80211_policy,
10998 .flags = GENL_ADMIN_PERM,
10999 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11000 NL80211_FLAG_NEED_RTNL,
11001 },
11002 {
11003 .cmd = NL80211_CMD_SET_QOS_MAP,
11004 .doit = nl80211_set_qos_map,
11005 .policy = nl80211_policy,
11006 .flags = GENL_ADMIN_PERM,
11007 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11008 NL80211_FLAG_NEED_RTNL,
11009 },
11010 {
11011 .cmd = NL80211_CMD_ADD_TX_TS,
11012 .doit = nl80211_add_tx_ts,
11013 .policy = nl80211_policy,
11014 .flags = GENL_ADMIN_PERM,
11015 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11016 NL80211_FLAG_NEED_RTNL,
11017 },
11018 {
11019 .cmd = NL80211_CMD_DEL_TX_TS,
11020 .doit = nl80211_del_tx_ts,
11021 .policy = nl80211_policy,
11022 .flags = GENL_ADMIN_PERM,
11023 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11024 NL80211_FLAG_NEED_RTNL,
11025 },
11026 {
11027 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11028 .doit = nl80211_tdls_channel_switch,
11029 .policy = nl80211_policy,
11030 .flags = GENL_ADMIN_PERM,
11031 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11032 NL80211_FLAG_NEED_RTNL,
11033 },
11034 {
11035 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11036 .doit = nl80211_tdls_cancel_channel_switch,
11037 .policy = nl80211_policy,
11038 .flags = GENL_ADMIN_PERM,
11039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11040 NL80211_FLAG_NEED_RTNL,
11041 },
11042 };
11043
11044 /* notification functions */
11045
11046 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11047 enum nl80211_commands cmd)
11048 {
11049 struct sk_buff *msg;
11050 struct nl80211_dump_wiphy_state state = {};
11051
11052 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11053 cmd != NL80211_CMD_DEL_WIPHY);
11054
11055 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11056 if (!msg)
11057 return;
11058
11059 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11060 nlmsg_free(msg);
11061 return;
11062 }
11063
11064 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11065 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11066 }
11067
11068 static int nl80211_add_scan_req(struct sk_buff *msg,
11069 struct cfg80211_registered_device *rdev)
11070 {
11071 struct cfg80211_scan_request *req = rdev->scan_req;
11072 struct nlattr *nest;
11073 int i;
11074
11075 if (WARN_ON(!req))
11076 return 0;
11077
11078 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11079 if (!nest)
11080 goto nla_put_failure;
11081 for (i = 0; i < req->n_ssids; i++) {
11082 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11083 goto nla_put_failure;
11084 }
11085 nla_nest_end(msg, nest);
11086
11087 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11088 if (!nest)
11089 goto nla_put_failure;
11090 for (i = 0; i < req->n_channels; i++) {
11091 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11092 goto nla_put_failure;
11093 }
11094 nla_nest_end(msg, nest);
11095
11096 if (req->ie &&
11097 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11098 goto nla_put_failure;
11099
11100 if (req->flags &&
11101 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11102 goto nla_put_failure;
11103
11104 return 0;
11105 nla_put_failure:
11106 return -ENOBUFS;
11107 }
11108
11109 static int nl80211_send_scan_msg(struct sk_buff *msg,
11110 struct cfg80211_registered_device *rdev,
11111 struct wireless_dev *wdev,
11112 u32 portid, u32 seq, int flags,
11113 u32 cmd)
11114 {
11115 void *hdr;
11116
11117 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11118 if (!hdr)
11119 return -1;
11120
11121 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11122 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11123 wdev->netdev->ifindex)) ||
11124 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11125 goto nla_put_failure;
11126
11127 /* ignore errors and send incomplete event anyway */
11128 nl80211_add_scan_req(msg, rdev);
11129
11130 genlmsg_end(msg, hdr);
11131 return 0;
11132
11133 nla_put_failure:
11134 genlmsg_cancel(msg, hdr);
11135 return -EMSGSIZE;
11136 }
11137
11138 static int
11139 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11140 struct cfg80211_registered_device *rdev,
11141 struct net_device *netdev,
11142 u32 portid, u32 seq, int flags, u32 cmd)
11143 {
11144 void *hdr;
11145
11146 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11147 if (!hdr)
11148 return -1;
11149
11150 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11151 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11152 goto nla_put_failure;
11153
11154 genlmsg_end(msg, hdr);
11155 return 0;
11156
11157 nla_put_failure:
11158 genlmsg_cancel(msg, hdr);
11159 return -EMSGSIZE;
11160 }
11161
11162 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11163 struct wireless_dev *wdev)
11164 {
11165 struct sk_buff *msg;
11166
11167 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11168 if (!msg)
11169 return;
11170
11171 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11172 NL80211_CMD_TRIGGER_SCAN) < 0) {
11173 nlmsg_free(msg);
11174 return;
11175 }
11176
11177 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11178 NL80211_MCGRP_SCAN, GFP_KERNEL);
11179 }
11180
11181 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11182 struct wireless_dev *wdev, bool aborted)
11183 {
11184 struct sk_buff *msg;
11185
11186 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11187 if (!msg)
11188 return NULL;
11189
11190 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11191 aborted ? NL80211_CMD_SCAN_ABORTED :
11192 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11193 nlmsg_free(msg);
11194 return NULL;
11195 }
11196
11197 return msg;
11198 }
11199
11200 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11201 struct sk_buff *msg)
11202 {
11203 if (!msg)
11204 return;
11205
11206 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11207 NL80211_MCGRP_SCAN, GFP_KERNEL);
11208 }
11209
11210 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11211 struct net_device *netdev)
11212 {
11213 struct sk_buff *msg;
11214
11215 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11216 if (!msg)
11217 return;
11218
11219 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11220 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11221 nlmsg_free(msg);
11222 return;
11223 }
11224
11225 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11226 NL80211_MCGRP_SCAN, GFP_KERNEL);
11227 }
11228
11229 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11230 struct net_device *netdev, u32 cmd)
11231 {
11232 struct sk_buff *msg;
11233
11234 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11235 if (!msg)
11236 return;
11237
11238 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11239 nlmsg_free(msg);
11240 return;
11241 }
11242
11243 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11244 NL80211_MCGRP_SCAN, GFP_KERNEL);
11245 }
11246
11247 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11248 struct regulatory_request *request)
11249 {
11250 /* Userspace can always count this one always being set */
11251 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11252 goto nla_put_failure;
11253
11254 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11255 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11256 NL80211_REGDOM_TYPE_WORLD))
11257 goto nla_put_failure;
11258 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11259 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11260 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11261 goto nla_put_failure;
11262 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11263 request->intersect) {
11264 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11265 NL80211_REGDOM_TYPE_INTERSECTION))
11266 goto nla_put_failure;
11267 } else {
11268 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11269 NL80211_REGDOM_TYPE_COUNTRY) ||
11270 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11271 request->alpha2))
11272 goto nla_put_failure;
11273 }
11274
11275 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11276 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11277
11278 if (wiphy &&
11279 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11280 goto nla_put_failure;
11281
11282 if (wiphy &&
11283 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11284 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11285 goto nla_put_failure;
11286 }
11287
11288 return true;
11289
11290 nla_put_failure:
11291 return false;
11292 }
11293
11294 /*
11295 * This can happen on global regulatory changes or device specific settings
11296 * based on custom regulatory domains.
11297 */
11298 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11299 struct regulatory_request *request)
11300 {
11301 struct sk_buff *msg;
11302 void *hdr;
11303
11304 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11305 if (!msg)
11306 return;
11307
11308 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11309 if (!hdr) {
11310 nlmsg_free(msg);
11311 return;
11312 }
11313
11314 if (nl80211_reg_change_event_fill(msg, request) == false)
11315 goto nla_put_failure;
11316
11317 genlmsg_end(msg, hdr);
11318
11319 rcu_read_lock();
11320 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11321 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11322 rcu_read_unlock();
11323
11324 return;
11325
11326 nla_put_failure:
11327 genlmsg_cancel(msg, hdr);
11328 nlmsg_free(msg);
11329 }
11330
11331 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11332 struct net_device *netdev,
11333 const u8 *buf, size_t len,
11334 enum nl80211_commands cmd, gfp_t gfp,
11335 int uapsd_queues)
11336 {
11337 struct sk_buff *msg;
11338 void *hdr;
11339
11340 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11341 if (!msg)
11342 return;
11343
11344 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11345 if (!hdr) {
11346 nlmsg_free(msg);
11347 return;
11348 }
11349
11350 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11351 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11352 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11353 goto nla_put_failure;
11354
11355 if (uapsd_queues >= 0) {
11356 struct nlattr *nla_wmm =
11357 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11358 if (!nla_wmm)
11359 goto nla_put_failure;
11360
11361 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11362 uapsd_queues))
11363 goto nla_put_failure;
11364
11365 nla_nest_end(msg, nla_wmm);
11366 }
11367
11368 genlmsg_end(msg, hdr);
11369
11370 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11371 NL80211_MCGRP_MLME, gfp);
11372 return;
11373
11374 nla_put_failure:
11375 genlmsg_cancel(msg, hdr);
11376 nlmsg_free(msg);
11377 }
11378
11379 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11380 struct net_device *netdev, const u8 *buf,
11381 size_t len, gfp_t gfp)
11382 {
11383 nl80211_send_mlme_event(rdev, netdev, buf, len,
11384 NL80211_CMD_AUTHENTICATE, gfp, -1);
11385 }
11386
11387 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11388 struct net_device *netdev, const u8 *buf,
11389 size_t len, gfp_t gfp, int uapsd_queues)
11390 {
11391 nl80211_send_mlme_event(rdev, netdev, buf, len,
11392 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11393 }
11394
11395 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11396 struct net_device *netdev, const u8 *buf,
11397 size_t len, gfp_t gfp)
11398 {
11399 nl80211_send_mlme_event(rdev, netdev, buf, len,
11400 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11401 }
11402
11403 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11404 struct net_device *netdev, const u8 *buf,
11405 size_t len, gfp_t gfp)
11406 {
11407 nl80211_send_mlme_event(rdev, netdev, buf, len,
11408 NL80211_CMD_DISASSOCIATE, gfp, -1);
11409 }
11410
11411 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11412 size_t len)
11413 {
11414 struct wireless_dev *wdev = dev->ieee80211_ptr;
11415 struct wiphy *wiphy = wdev->wiphy;
11416 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11417 const struct ieee80211_mgmt *mgmt = (void *)buf;
11418 u32 cmd;
11419
11420 if (WARN_ON(len < 2))
11421 return;
11422
11423 if (ieee80211_is_deauth(mgmt->frame_control))
11424 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11425 else
11426 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11427
11428 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11429 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11430 }
11431 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11432
11433 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11434 struct net_device *netdev, int cmd,
11435 const u8 *addr, gfp_t gfp)
11436 {
11437 struct sk_buff *msg;
11438 void *hdr;
11439
11440 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11441 if (!msg)
11442 return;
11443
11444 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11445 if (!hdr) {
11446 nlmsg_free(msg);
11447 return;
11448 }
11449
11450 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11451 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11452 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11453 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11454 goto nla_put_failure;
11455
11456 genlmsg_end(msg, hdr);
11457
11458 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11459 NL80211_MCGRP_MLME, gfp);
11460 return;
11461
11462 nla_put_failure:
11463 genlmsg_cancel(msg, hdr);
11464 nlmsg_free(msg);
11465 }
11466
11467 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11468 struct net_device *netdev, const u8 *addr,
11469 gfp_t gfp)
11470 {
11471 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11472 addr, gfp);
11473 }
11474
11475 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11476 struct net_device *netdev, const u8 *addr,
11477 gfp_t gfp)
11478 {
11479 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11480 addr, gfp);
11481 }
11482
11483 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11484 struct net_device *netdev, const u8 *bssid,
11485 const u8 *req_ie, size_t req_ie_len,
11486 const u8 *resp_ie, size_t resp_ie_len,
11487 u16 status, gfp_t gfp)
11488 {
11489 struct sk_buff *msg;
11490 void *hdr;
11491
11492 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11493 if (!msg)
11494 return;
11495
11496 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11497 if (!hdr) {
11498 nlmsg_free(msg);
11499 return;
11500 }
11501
11502 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11503 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11504 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11505 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11506 (req_ie &&
11507 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11508 (resp_ie &&
11509 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11510 goto nla_put_failure;
11511
11512 genlmsg_end(msg, hdr);
11513
11514 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11515 NL80211_MCGRP_MLME, gfp);
11516 return;
11517
11518 nla_put_failure:
11519 genlmsg_cancel(msg, hdr);
11520 nlmsg_free(msg);
11521
11522 }
11523
11524 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11525 struct net_device *netdev, const u8 *bssid,
11526 const u8 *req_ie, size_t req_ie_len,
11527 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11528 {
11529 struct sk_buff *msg;
11530 void *hdr;
11531
11532 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11533 if (!msg)
11534 return;
11535
11536 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11537 if (!hdr) {
11538 nlmsg_free(msg);
11539 return;
11540 }
11541
11542 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11543 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11544 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11545 (req_ie &&
11546 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11547 (resp_ie &&
11548 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11549 goto nla_put_failure;
11550
11551 genlmsg_end(msg, hdr);
11552
11553 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11554 NL80211_MCGRP_MLME, gfp);
11555 return;
11556
11557 nla_put_failure:
11558 genlmsg_cancel(msg, hdr);
11559 nlmsg_free(msg);
11560
11561 }
11562
11563 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11564 struct net_device *netdev, u16 reason,
11565 const u8 *ie, size_t ie_len, bool from_ap)
11566 {
11567 struct sk_buff *msg;
11568 void *hdr;
11569
11570 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11571 if (!msg)
11572 return;
11573
11574 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11575 if (!hdr) {
11576 nlmsg_free(msg);
11577 return;
11578 }
11579
11580 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11581 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11582 (from_ap && reason &&
11583 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11584 (from_ap &&
11585 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11586 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11587 goto nla_put_failure;
11588
11589 genlmsg_end(msg, hdr);
11590
11591 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11592 NL80211_MCGRP_MLME, GFP_KERNEL);
11593 return;
11594
11595 nla_put_failure:
11596 genlmsg_cancel(msg, hdr);
11597 nlmsg_free(msg);
11598
11599 }
11600
11601 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11602 struct net_device *netdev, const u8 *bssid,
11603 gfp_t gfp)
11604 {
11605 struct sk_buff *msg;
11606 void *hdr;
11607
11608 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11609 if (!msg)
11610 return;
11611
11612 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11613 if (!hdr) {
11614 nlmsg_free(msg);
11615 return;
11616 }
11617
11618 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11619 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11620 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11621 goto nla_put_failure;
11622
11623 genlmsg_end(msg, hdr);
11624
11625 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11626 NL80211_MCGRP_MLME, gfp);
11627 return;
11628
11629 nla_put_failure:
11630 genlmsg_cancel(msg, hdr);
11631 nlmsg_free(msg);
11632 }
11633
11634 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11635 const u8* ie, u8 ie_len, gfp_t gfp)
11636 {
11637 struct wireless_dev *wdev = dev->ieee80211_ptr;
11638 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11639 struct sk_buff *msg;
11640 void *hdr;
11641
11642 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11643 return;
11644
11645 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11646
11647 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11648 if (!msg)
11649 return;
11650
11651 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11652 if (!hdr) {
11653 nlmsg_free(msg);
11654 return;
11655 }
11656
11657 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11658 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11659 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11660 (ie_len && ie &&
11661 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11662 goto nla_put_failure;
11663
11664 genlmsg_end(msg, hdr);
11665
11666 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11667 NL80211_MCGRP_MLME, gfp);
11668 return;
11669
11670 nla_put_failure:
11671 genlmsg_cancel(msg, hdr);
11672 nlmsg_free(msg);
11673 }
11674 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11675
11676 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11677 struct net_device *netdev, const u8 *addr,
11678 enum nl80211_key_type key_type, int key_id,
11679 const u8 *tsc, gfp_t gfp)
11680 {
11681 struct sk_buff *msg;
11682 void *hdr;
11683
11684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11685 if (!msg)
11686 return;
11687
11688 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11689 if (!hdr) {
11690 nlmsg_free(msg);
11691 return;
11692 }
11693
11694 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11695 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11696 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11697 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11698 (key_id != -1 &&
11699 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11700 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11701 goto nla_put_failure;
11702
11703 genlmsg_end(msg, hdr);
11704
11705 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11706 NL80211_MCGRP_MLME, gfp);
11707 return;
11708
11709 nla_put_failure:
11710 genlmsg_cancel(msg, hdr);
11711 nlmsg_free(msg);
11712 }
11713
11714 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11715 struct ieee80211_channel *channel_before,
11716 struct ieee80211_channel *channel_after)
11717 {
11718 struct sk_buff *msg;
11719 void *hdr;
11720 struct nlattr *nl_freq;
11721
11722 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11723 if (!msg)
11724 return;
11725
11726 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11727 if (!hdr) {
11728 nlmsg_free(msg);
11729 return;
11730 }
11731
11732 /*
11733 * Since we are applying the beacon hint to a wiphy we know its
11734 * wiphy_idx is valid
11735 */
11736 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11737 goto nla_put_failure;
11738
11739 /* Before */
11740 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11741 if (!nl_freq)
11742 goto nla_put_failure;
11743 if (nl80211_msg_put_channel(msg, channel_before, false))
11744 goto nla_put_failure;
11745 nla_nest_end(msg, nl_freq);
11746
11747 /* After */
11748 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11749 if (!nl_freq)
11750 goto nla_put_failure;
11751 if (nl80211_msg_put_channel(msg, channel_after, false))
11752 goto nla_put_failure;
11753 nla_nest_end(msg, nl_freq);
11754
11755 genlmsg_end(msg, hdr);
11756
11757 rcu_read_lock();
11758 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11759 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11760 rcu_read_unlock();
11761
11762 return;
11763
11764 nla_put_failure:
11765 genlmsg_cancel(msg, hdr);
11766 nlmsg_free(msg);
11767 }
11768
11769 static void nl80211_send_remain_on_chan_event(
11770 int cmd, struct cfg80211_registered_device *rdev,
11771 struct wireless_dev *wdev, u64 cookie,
11772 struct ieee80211_channel *chan,
11773 unsigned int duration, gfp_t gfp)
11774 {
11775 struct sk_buff *msg;
11776 void *hdr;
11777
11778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11779 if (!msg)
11780 return;
11781
11782 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11783 if (!hdr) {
11784 nlmsg_free(msg);
11785 return;
11786 }
11787
11788 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11789 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11790 wdev->netdev->ifindex)) ||
11791 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11792 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11793 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11794 NL80211_CHAN_NO_HT) ||
11795 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11796 goto nla_put_failure;
11797
11798 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11799 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11800 goto nla_put_failure;
11801
11802 genlmsg_end(msg, hdr);
11803
11804 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11805 NL80211_MCGRP_MLME, gfp);
11806 return;
11807
11808 nla_put_failure:
11809 genlmsg_cancel(msg, hdr);
11810 nlmsg_free(msg);
11811 }
11812
11813 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11814 struct ieee80211_channel *chan,
11815 unsigned int duration, gfp_t gfp)
11816 {
11817 struct wiphy *wiphy = wdev->wiphy;
11818 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11819
11820 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11821 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11822 rdev, wdev, cookie, chan,
11823 duration, gfp);
11824 }
11825 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11826
11827 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11828 struct ieee80211_channel *chan,
11829 gfp_t gfp)
11830 {
11831 struct wiphy *wiphy = wdev->wiphy;
11832 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11833
11834 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11835 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11836 rdev, wdev, cookie, chan, 0, gfp);
11837 }
11838 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11839
11840 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11841 struct station_info *sinfo, gfp_t gfp)
11842 {
11843 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11844 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11845 struct sk_buff *msg;
11846
11847 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11848
11849 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11850 if (!msg)
11851 return;
11852
11853 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11854 rdev, dev, mac_addr, sinfo) < 0) {
11855 nlmsg_free(msg);
11856 return;
11857 }
11858
11859 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11860 NL80211_MCGRP_MLME, gfp);
11861 }
11862 EXPORT_SYMBOL(cfg80211_new_sta);
11863
11864 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11865 struct station_info *sinfo, gfp_t gfp)
11866 {
11867 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11868 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11869 struct sk_buff *msg;
11870 struct station_info empty_sinfo = {};
11871
11872 if (!sinfo)
11873 sinfo = &empty_sinfo;
11874
11875 trace_cfg80211_del_sta(dev, mac_addr);
11876
11877 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11878 if (!msg)
11879 return;
11880
11881 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11882 rdev, dev, mac_addr, sinfo) < 0) {
11883 nlmsg_free(msg);
11884 return;
11885 }
11886
11887 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11888 NL80211_MCGRP_MLME, gfp);
11889 }
11890 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11891
11892 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11893 enum nl80211_connect_failed_reason reason,
11894 gfp_t gfp)
11895 {
11896 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11897 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11898 struct sk_buff *msg;
11899 void *hdr;
11900
11901 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11902 if (!msg)
11903 return;
11904
11905 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11906 if (!hdr) {
11907 nlmsg_free(msg);
11908 return;
11909 }
11910
11911 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11912 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11913 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11914 goto nla_put_failure;
11915
11916 genlmsg_end(msg, hdr);
11917
11918 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11919 NL80211_MCGRP_MLME, gfp);
11920 return;
11921
11922 nla_put_failure:
11923 genlmsg_cancel(msg, hdr);
11924 nlmsg_free(msg);
11925 }
11926 EXPORT_SYMBOL(cfg80211_conn_failed);
11927
11928 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11929 const u8 *addr, gfp_t gfp)
11930 {
11931 struct wireless_dev *wdev = dev->ieee80211_ptr;
11932 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11933 struct sk_buff *msg;
11934 void *hdr;
11935 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11936
11937 if (!nlportid)
11938 return false;
11939
11940 msg = nlmsg_new(100, gfp);
11941 if (!msg)
11942 return true;
11943
11944 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11945 if (!hdr) {
11946 nlmsg_free(msg);
11947 return true;
11948 }
11949
11950 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11951 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11952 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11953 goto nla_put_failure;
11954
11955 genlmsg_end(msg, hdr);
11956 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11957 return true;
11958
11959 nla_put_failure:
11960 genlmsg_cancel(msg, hdr);
11961 nlmsg_free(msg);
11962 return true;
11963 }
11964
11965 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11966 const u8 *addr, gfp_t gfp)
11967 {
11968 struct wireless_dev *wdev = dev->ieee80211_ptr;
11969 bool ret;
11970
11971 trace_cfg80211_rx_spurious_frame(dev, addr);
11972
11973 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11974 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11975 trace_cfg80211_return_bool(false);
11976 return false;
11977 }
11978 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11979 addr, gfp);
11980 trace_cfg80211_return_bool(ret);
11981 return ret;
11982 }
11983 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11984
11985 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11986 const u8 *addr, gfp_t gfp)
11987 {
11988 struct wireless_dev *wdev = dev->ieee80211_ptr;
11989 bool ret;
11990
11991 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11992
11993 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11994 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11995 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11996 trace_cfg80211_return_bool(false);
11997 return false;
11998 }
11999 ret = __nl80211_unexpected_frame(dev,
12000 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12001 addr, gfp);
12002 trace_cfg80211_return_bool(ret);
12003 return ret;
12004 }
12005 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12006
12007 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12008 struct wireless_dev *wdev, u32 nlportid,
12009 int freq, int sig_dbm,
12010 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12011 {
12012 struct net_device *netdev = wdev->netdev;
12013 struct sk_buff *msg;
12014 void *hdr;
12015
12016 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12017 if (!msg)
12018 return -ENOMEM;
12019
12020 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12021 if (!hdr) {
12022 nlmsg_free(msg);
12023 return -ENOMEM;
12024 }
12025
12026 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12027 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12028 netdev->ifindex)) ||
12029 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12030 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12031 (sig_dbm &&
12032 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12033 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12034 (flags &&
12035 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12036 goto nla_put_failure;
12037
12038 genlmsg_end(msg, hdr);
12039
12040 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12041
12042 nla_put_failure:
12043 genlmsg_cancel(msg, hdr);
12044 nlmsg_free(msg);
12045 return -ENOBUFS;
12046 }
12047
12048 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12049 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12050 {
12051 struct wiphy *wiphy = wdev->wiphy;
12052 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12053 struct net_device *netdev = wdev->netdev;
12054 struct sk_buff *msg;
12055 void *hdr;
12056
12057 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12058
12059 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12060 if (!msg)
12061 return;
12062
12063 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12064 if (!hdr) {
12065 nlmsg_free(msg);
12066 return;
12067 }
12068
12069 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12070 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12071 netdev->ifindex)) ||
12072 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12073 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12074 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12075 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12076 goto nla_put_failure;
12077
12078 genlmsg_end(msg, hdr);
12079
12080 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12081 NL80211_MCGRP_MLME, gfp);
12082 return;
12083
12084 nla_put_failure:
12085 genlmsg_cancel(msg, hdr);
12086 nlmsg_free(msg);
12087 }
12088 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12089
12090 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12091 const char *mac, gfp_t gfp)
12092 {
12093 struct wireless_dev *wdev = dev->ieee80211_ptr;
12094 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12095 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12096 void **cb;
12097
12098 if (!msg)
12099 return NULL;
12100
12101 cb = (void **)msg->cb;
12102
12103 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12104 if (!cb[0]) {
12105 nlmsg_free(msg);
12106 return NULL;
12107 }
12108
12109 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12110 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12111 goto nla_put_failure;
12112
12113 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12114 goto nla_put_failure;
12115
12116 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12117 if (!cb[1])
12118 goto nla_put_failure;
12119
12120 cb[2] = rdev;
12121
12122 return msg;
12123 nla_put_failure:
12124 nlmsg_free(msg);
12125 return NULL;
12126 }
12127
12128 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12129 {
12130 void **cb = (void **)msg->cb;
12131 struct cfg80211_registered_device *rdev = cb[2];
12132
12133 nla_nest_end(msg, cb[1]);
12134 genlmsg_end(msg, cb[0]);
12135
12136 memset(msg->cb, 0, sizeof(msg->cb));
12137
12138 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12139 NL80211_MCGRP_MLME, gfp);
12140 }
12141
12142 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12143 enum nl80211_cqm_rssi_threshold_event rssi_event,
12144 gfp_t gfp)
12145 {
12146 struct sk_buff *msg;
12147
12148 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12149
12150 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12151 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12152 return;
12153
12154 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12155 if (!msg)
12156 return;
12157
12158 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12159 rssi_event))
12160 goto nla_put_failure;
12161
12162 cfg80211_send_cqm(msg, gfp);
12163
12164 return;
12165
12166 nla_put_failure:
12167 nlmsg_free(msg);
12168 }
12169 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12170
12171 void cfg80211_cqm_txe_notify(struct net_device *dev,
12172 const u8 *peer, u32 num_packets,
12173 u32 rate, u32 intvl, gfp_t gfp)
12174 {
12175 struct sk_buff *msg;
12176
12177 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12178 if (!msg)
12179 return;
12180
12181 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12182 goto nla_put_failure;
12183
12184 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12185 goto nla_put_failure;
12186
12187 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12188 goto nla_put_failure;
12189
12190 cfg80211_send_cqm(msg, gfp);
12191 return;
12192
12193 nla_put_failure:
12194 nlmsg_free(msg);
12195 }
12196 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12197
12198 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12199 const u8 *peer, u32 num_packets, gfp_t gfp)
12200 {
12201 struct sk_buff *msg;
12202
12203 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12204
12205 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12206 if (!msg)
12207 return;
12208
12209 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12210 goto nla_put_failure;
12211
12212 cfg80211_send_cqm(msg, gfp);
12213 return;
12214
12215 nla_put_failure:
12216 nlmsg_free(msg);
12217 }
12218 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12219
12220 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12221 {
12222 struct sk_buff *msg;
12223
12224 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12225 if (!msg)
12226 return;
12227
12228 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12229 goto nla_put_failure;
12230
12231 cfg80211_send_cqm(msg, gfp);
12232 return;
12233
12234 nla_put_failure:
12235 nlmsg_free(msg);
12236 }
12237 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12238
12239 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12240 struct net_device *netdev, const u8 *bssid,
12241 const u8 *replay_ctr, gfp_t gfp)
12242 {
12243 struct sk_buff *msg;
12244 struct nlattr *rekey_attr;
12245 void *hdr;
12246
12247 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12248 if (!msg)
12249 return;
12250
12251 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12252 if (!hdr) {
12253 nlmsg_free(msg);
12254 return;
12255 }
12256
12257 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12258 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12259 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12260 goto nla_put_failure;
12261
12262 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12263 if (!rekey_attr)
12264 goto nla_put_failure;
12265
12266 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12267 NL80211_REPLAY_CTR_LEN, replay_ctr))
12268 goto nla_put_failure;
12269
12270 nla_nest_end(msg, rekey_attr);
12271
12272 genlmsg_end(msg, hdr);
12273
12274 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12275 NL80211_MCGRP_MLME, gfp);
12276 return;
12277
12278 nla_put_failure:
12279 genlmsg_cancel(msg, hdr);
12280 nlmsg_free(msg);
12281 }
12282
12283 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12284 const u8 *replay_ctr, gfp_t gfp)
12285 {
12286 struct wireless_dev *wdev = dev->ieee80211_ptr;
12287 struct wiphy *wiphy = wdev->wiphy;
12288 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12289
12290 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12291 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12292 }
12293 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12294
12295 static void
12296 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12297 struct net_device *netdev, int index,
12298 const u8 *bssid, bool preauth, gfp_t gfp)
12299 {
12300 struct sk_buff *msg;
12301 struct nlattr *attr;
12302 void *hdr;
12303
12304 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12305 if (!msg)
12306 return;
12307
12308 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12309 if (!hdr) {
12310 nlmsg_free(msg);
12311 return;
12312 }
12313
12314 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12315 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12316 goto nla_put_failure;
12317
12318 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12319 if (!attr)
12320 goto nla_put_failure;
12321
12322 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12323 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12324 (preauth &&
12325 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12326 goto nla_put_failure;
12327
12328 nla_nest_end(msg, attr);
12329
12330 genlmsg_end(msg, hdr);
12331
12332 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12333 NL80211_MCGRP_MLME, gfp);
12334 return;
12335
12336 nla_put_failure:
12337 genlmsg_cancel(msg, hdr);
12338 nlmsg_free(msg);
12339 }
12340
12341 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12342 const u8 *bssid, bool preauth, gfp_t gfp)
12343 {
12344 struct wireless_dev *wdev = dev->ieee80211_ptr;
12345 struct wiphy *wiphy = wdev->wiphy;
12346 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12347
12348 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12349 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12350 }
12351 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12352
12353 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12354 struct net_device *netdev,
12355 struct cfg80211_chan_def *chandef,
12356 gfp_t gfp,
12357 enum nl80211_commands notif,
12358 u8 count)
12359 {
12360 struct sk_buff *msg;
12361 void *hdr;
12362
12363 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12364 if (!msg)
12365 return;
12366
12367 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12368 if (!hdr) {
12369 nlmsg_free(msg);
12370 return;
12371 }
12372
12373 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12374 goto nla_put_failure;
12375
12376 if (nl80211_send_chandef(msg, chandef))
12377 goto nla_put_failure;
12378
12379 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12380 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12381 goto nla_put_failure;
12382
12383 genlmsg_end(msg, hdr);
12384
12385 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12386 NL80211_MCGRP_MLME, gfp);
12387 return;
12388
12389 nla_put_failure:
12390 genlmsg_cancel(msg, hdr);
12391 nlmsg_free(msg);
12392 }
12393
12394 void cfg80211_ch_switch_notify(struct net_device *dev,
12395 struct cfg80211_chan_def *chandef)
12396 {
12397 struct wireless_dev *wdev = dev->ieee80211_ptr;
12398 struct wiphy *wiphy = wdev->wiphy;
12399 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12400
12401 ASSERT_WDEV_LOCK(wdev);
12402
12403 trace_cfg80211_ch_switch_notify(dev, chandef);
12404
12405 wdev->chandef = *chandef;
12406 wdev->preset_chandef = *chandef;
12407 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12408 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12409 }
12410 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12411
12412 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12413 struct cfg80211_chan_def *chandef,
12414 u8 count)
12415 {
12416 struct wireless_dev *wdev = dev->ieee80211_ptr;
12417 struct wiphy *wiphy = wdev->wiphy;
12418 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12419
12420 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12421
12422 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12423 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12424 }
12425 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12426
12427 void
12428 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12429 const struct cfg80211_chan_def *chandef,
12430 enum nl80211_radar_event event,
12431 struct net_device *netdev, gfp_t gfp)
12432 {
12433 struct sk_buff *msg;
12434 void *hdr;
12435
12436 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12437 if (!msg)
12438 return;
12439
12440 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12441 if (!hdr) {
12442 nlmsg_free(msg);
12443 return;
12444 }
12445
12446 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12447 goto nla_put_failure;
12448
12449 /* NOP and radar events don't need a netdev parameter */
12450 if (netdev) {
12451 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12452
12453 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12454 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12455 goto nla_put_failure;
12456 }
12457
12458 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12459 goto nla_put_failure;
12460
12461 if (nl80211_send_chandef(msg, chandef))
12462 goto nla_put_failure;
12463
12464 genlmsg_end(msg, hdr);
12465
12466 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12467 NL80211_MCGRP_MLME, gfp);
12468 return;
12469
12470 nla_put_failure:
12471 genlmsg_cancel(msg, hdr);
12472 nlmsg_free(msg);
12473 }
12474
12475 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12476 u64 cookie, bool acked, gfp_t gfp)
12477 {
12478 struct wireless_dev *wdev = dev->ieee80211_ptr;
12479 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12480 struct sk_buff *msg;
12481 void *hdr;
12482
12483 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12484
12485 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12486
12487 if (!msg)
12488 return;
12489
12490 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12491 if (!hdr) {
12492 nlmsg_free(msg);
12493 return;
12494 }
12495
12496 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12497 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12498 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12499 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12500 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12501 goto nla_put_failure;
12502
12503 genlmsg_end(msg, hdr);
12504
12505 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12506 NL80211_MCGRP_MLME, gfp);
12507 return;
12508
12509 nla_put_failure:
12510 genlmsg_cancel(msg, hdr);
12511 nlmsg_free(msg);
12512 }
12513 EXPORT_SYMBOL(cfg80211_probe_status);
12514
12515 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12516 const u8 *frame, size_t len,
12517 int freq, int sig_dbm)
12518 {
12519 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12520 struct sk_buff *msg;
12521 void *hdr;
12522 struct cfg80211_beacon_registration *reg;
12523
12524 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12525
12526 spin_lock_bh(&rdev->beacon_registrations_lock);
12527 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12528 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12529 if (!msg) {
12530 spin_unlock_bh(&rdev->beacon_registrations_lock);
12531 return;
12532 }
12533
12534 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12535 if (!hdr)
12536 goto nla_put_failure;
12537
12538 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12539 (freq &&
12540 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12541 (sig_dbm &&
12542 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12543 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12544 goto nla_put_failure;
12545
12546 genlmsg_end(msg, hdr);
12547
12548 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12549 }
12550 spin_unlock_bh(&rdev->beacon_registrations_lock);
12551 return;
12552
12553 nla_put_failure:
12554 spin_unlock_bh(&rdev->beacon_registrations_lock);
12555 if (hdr)
12556 genlmsg_cancel(msg, hdr);
12557 nlmsg_free(msg);
12558 }
12559 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12560
12561 #ifdef CONFIG_PM
12562 static int cfg80211_net_detect_results(struct sk_buff *msg,
12563 struct cfg80211_wowlan_wakeup *wakeup)
12564 {
12565 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12566 struct nlattr *nl_results, *nl_match, *nl_freqs;
12567 int i, j;
12568
12569 nl_results = nla_nest_start(
12570 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12571 if (!nl_results)
12572 return -EMSGSIZE;
12573
12574 for (i = 0; i < nd->n_matches; i++) {
12575 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12576
12577 nl_match = nla_nest_start(msg, i);
12578 if (!nl_match)
12579 break;
12580
12581 /* The SSID attribute is optional in nl80211, but for
12582 * simplicity reasons it's always present in the
12583 * cfg80211 structure. If a driver can't pass the
12584 * SSID, that needs to be changed. A zero length SSID
12585 * is still a valid SSID (wildcard), so it cannot be
12586 * used for this purpose.
12587 */
12588 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12589 match->ssid.ssid)) {
12590 nla_nest_cancel(msg, nl_match);
12591 goto out;
12592 }
12593
12594 if (match->n_channels) {
12595 nl_freqs = nla_nest_start(
12596 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12597 if (!nl_freqs) {
12598 nla_nest_cancel(msg, nl_match);
12599 goto out;
12600 }
12601
12602 for (j = 0; j < match->n_channels; j++) {
12603 if (nla_put_u32(msg, j, match->channels[j])) {
12604 nla_nest_cancel(msg, nl_freqs);
12605 nla_nest_cancel(msg, nl_match);
12606 goto out;
12607 }
12608 }
12609
12610 nla_nest_end(msg, nl_freqs);
12611 }
12612
12613 nla_nest_end(msg, nl_match);
12614 }
12615
12616 out:
12617 nla_nest_end(msg, nl_results);
12618 return 0;
12619 }
12620
12621 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12622 struct cfg80211_wowlan_wakeup *wakeup,
12623 gfp_t gfp)
12624 {
12625 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12626 struct sk_buff *msg;
12627 void *hdr;
12628 int size = 200;
12629
12630 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12631
12632 if (wakeup)
12633 size += wakeup->packet_present_len;
12634
12635 msg = nlmsg_new(size, gfp);
12636 if (!msg)
12637 return;
12638
12639 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12640 if (!hdr)
12641 goto free_msg;
12642
12643 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12644 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12645 goto free_msg;
12646
12647 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12648 wdev->netdev->ifindex))
12649 goto free_msg;
12650
12651 if (wakeup) {
12652 struct nlattr *reasons;
12653
12654 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12655 if (!reasons)
12656 goto free_msg;
12657
12658 if (wakeup->disconnect &&
12659 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12660 goto free_msg;
12661 if (wakeup->magic_pkt &&
12662 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12663 goto free_msg;
12664 if (wakeup->gtk_rekey_failure &&
12665 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12666 goto free_msg;
12667 if (wakeup->eap_identity_req &&
12668 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12669 goto free_msg;
12670 if (wakeup->four_way_handshake &&
12671 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12672 goto free_msg;
12673 if (wakeup->rfkill_release &&
12674 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12675 goto free_msg;
12676
12677 if (wakeup->pattern_idx >= 0 &&
12678 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12679 wakeup->pattern_idx))
12680 goto free_msg;
12681
12682 if (wakeup->tcp_match &&
12683 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12684 goto free_msg;
12685
12686 if (wakeup->tcp_connlost &&
12687 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12688 goto free_msg;
12689
12690 if (wakeup->tcp_nomoretokens &&
12691 nla_put_flag(msg,
12692 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12693 goto free_msg;
12694
12695 if (wakeup->packet) {
12696 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12697 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12698
12699 if (!wakeup->packet_80211) {
12700 pkt_attr =
12701 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12702 len_attr =
12703 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12704 }
12705
12706 if (wakeup->packet_len &&
12707 nla_put_u32(msg, len_attr, wakeup->packet_len))
12708 goto free_msg;
12709
12710 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12711 wakeup->packet))
12712 goto free_msg;
12713 }
12714
12715 if (wakeup->net_detect &&
12716 cfg80211_net_detect_results(msg, wakeup))
12717 goto free_msg;
12718
12719 nla_nest_end(msg, reasons);
12720 }
12721
12722 genlmsg_end(msg, hdr);
12723
12724 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12725 NL80211_MCGRP_MLME, gfp);
12726 return;
12727
12728 free_msg:
12729 nlmsg_free(msg);
12730 }
12731 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12732 #endif
12733
12734 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12735 enum nl80211_tdls_operation oper,
12736 u16 reason_code, gfp_t gfp)
12737 {
12738 struct wireless_dev *wdev = dev->ieee80211_ptr;
12739 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12740 struct sk_buff *msg;
12741 void *hdr;
12742
12743 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12744 reason_code);
12745
12746 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12747 if (!msg)
12748 return;
12749
12750 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12751 if (!hdr) {
12752 nlmsg_free(msg);
12753 return;
12754 }
12755
12756 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12757 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12758 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12759 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12760 (reason_code > 0 &&
12761 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12762 goto nla_put_failure;
12763
12764 genlmsg_end(msg, hdr);
12765
12766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12767 NL80211_MCGRP_MLME, gfp);
12768 return;
12769
12770 nla_put_failure:
12771 genlmsg_cancel(msg, hdr);
12772 nlmsg_free(msg);
12773 }
12774 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12775
12776 static int nl80211_netlink_notify(struct notifier_block * nb,
12777 unsigned long state,
12778 void *_notify)
12779 {
12780 struct netlink_notify *notify = _notify;
12781 struct cfg80211_registered_device *rdev;
12782 struct wireless_dev *wdev;
12783 struct cfg80211_beacon_registration *reg, *tmp;
12784
12785 if (state != NETLINK_URELEASE)
12786 return NOTIFY_DONE;
12787
12788 rcu_read_lock();
12789
12790 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12791 bool schedule_destroy_work = false;
12792 bool schedule_scan_stop = false;
12793 struct cfg80211_sched_scan_request *sched_scan_req =
12794 rcu_dereference(rdev->sched_scan_req);
12795
12796 if (sched_scan_req && notify->portid &&
12797 sched_scan_req->owner_nlportid == notify->portid)
12798 schedule_scan_stop = true;
12799
12800 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12801 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12802
12803 if (wdev->owner_nlportid == notify->portid)
12804 schedule_destroy_work = true;
12805 }
12806
12807 spin_lock_bh(&rdev->beacon_registrations_lock);
12808 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12809 list) {
12810 if (reg->nlportid == notify->portid) {
12811 list_del(&reg->list);
12812 kfree(reg);
12813 break;
12814 }
12815 }
12816 spin_unlock_bh(&rdev->beacon_registrations_lock);
12817
12818 if (schedule_destroy_work) {
12819 struct cfg80211_iface_destroy *destroy;
12820
12821 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12822 if (destroy) {
12823 destroy->nlportid = notify->portid;
12824 spin_lock(&rdev->destroy_list_lock);
12825 list_add(&destroy->list, &rdev->destroy_list);
12826 spin_unlock(&rdev->destroy_list_lock);
12827 schedule_work(&rdev->destroy_work);
12828 }
12829 } else if (schedule_scan_stop) {
12830 sched_scan_req->owner_nlportid = 0;
12831
12832 if (rdev->ops->sched_scan_stop &&
12833 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12834 schedule_work(&rdev->sched_scan_stop_wk);
12835 }
12836 }
12837
12838 rcu_read_unlock();
12839
12840 /*
12841 * It is possible that the user space process that is controlling the
12842 * indoor setting disappeared, so notify the regulatory core.
12843 */
12844 regulatory_netlink_notify(notify->portid);
12845 return NOTIFY_OK;
12846 }
12847
12848 static struct notifier_block nl80211_netlink_notifier = {
12849 .notifier_call = nl80211_netlink_notify,
12850 };
12851
12852 void cfg80211_ft_event(struct net_device *netdev,
12853 struct cfg80211_ft_event_params *ft_event)
12854 {
12855 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12856 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12857 struct sk_buff *msg;
12858 void *hdr;
12859
12860 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12861
12862 if (!ft_event->target_ap)
12863 return;
12864
12865 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12866 if (!msg)
12867 return;
12868
12869 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12870 if (!hdr)
12871 goto out;
12872
12873 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12874 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12875 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12876 goto out;
12877
12878 if (ft_event->ies &&
12879 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12880 goto out;
12881 if (ft_event->ric_ies &&
12882 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12883 ft_event->ric_ies))
12884 goto out;
12885
12886 genlmsg_end(msg, hdr);
12887
12888 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12889 NL80211_MCGRP_MLME, GFP_KERNEL);
12890 return;
12891 out:
12892 nlmsg_free(msg);
12893 }
12894 EXPORT_SYMBOL(cfg80211_ft_event);
12895
12896 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12897 {
12898 struct cfg80211_registered_device *rdev;
12899 struct sk_buff *msg;
12900 void *hdr;
12901 u32 nlportid;
12902
12903 rdev = wiphy_to_rdev(wdev->wiphy);
12904 if (!rdev->crit_proto_nlportid)
12905 return;
12906
12907 nlportid = rdev->crit_proto_nlportid;
12908 rdev->crit_proto_nlportid = 0;
12909
12910 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12911 if (!msg)
12912 return;
12913
12914 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12915 if (!hdr)
12916 goto nla_put_failure;
12917
12918 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12919 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12920 goto nla_put_failure;
12921
12922 genlmsg_end(msg, hdr);
12923
12924 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12925 return;
12926
12927 nla_put_failure:
12928 if (hdr)
12929 genlmsg_cancel(msg, hdr);
12930 nlmsg_free(msg);
12931
12932 }
12933 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12934
12935 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12936 {
12937 struct wiphy *wiphy = wdev->wiphy;
12938 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12939 struct sk_buff *msg;
12940 void *hdr;
12941
12942 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12943 if (!msg)
12944 return;
12945
12946 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12947 if (!hdr)
12948 goto out;
12949
12950 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12951 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12952 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12953 goto out;
12954
12955 genlmsg_end(msg, hdr);
12956
12957 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12958 NL80211_MCGRP_MLME, GFP_KERNEL);
12959 return;
12960 out:
12961 nlmsg_free(msg);
12962 }
12963
12964 /* initialisation/exit functions */
12965
12966 int nl80211_init(void)
12967 {
12968 int err;
12969
12970 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12971 nl80211_mcgrps);
12972 if (err)
12973 return err;
12974
12975 err = netlink_register_notifier(&nl80211_netlink_notifier);
12976 if (err)
12977 goto err_out;
12978
12979 return 0;
12980 err_out:
12981 genl_unregister_family(&nl80211_fam);
12982 return err;
12983 }
12984
12985 void nl80211_exit(void)
12986 {
12987 netlink_unregister_notifier(&nl80211_netlink_notifier);
12988 genl_unregister_family(&nl80211_fam);
12989 }
Linux kernel - Deliverables
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