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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
[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 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = NL80211_GENL_NAME, /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* multicast groups */
51 enum nl80211_multicast_groups {
52 NL80211_MCGRP_CONFIG,
53 NL80211_MCGRP_SCAN,
54 NL80211_MCGRP_REGULATORY,
55 NL80211_MCGRP_MLME,
56 NL80211_MCGRP_VENDOR,
57 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
58 };
59
60 static const struct genl_multicast_group nl80211_mcgrps[] = {
61 [NL80211_MCGRP_CONFIG] = { .name = "config", },
62 [NL80211_MCGRP_SCAN] = { .name = "scan", },
63 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
64 [NL80211_MCGRP_MLME] = { .name = "mlme", },
65 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
66 #ifdef CONFIG_NL80211_TESTMODE
67 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
68 #endif
69 };
70
71 /* returns ERR_PTR values */
72 static struct wireless_dev *
73 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
74 {
75 struct cfg80211_registered_device *rdev;
76 struct wireless_dev *result = NULL;
77 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
78 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
79 u64 wdev_id;
80 int wiphy_idx = -1;
81 int ifidx = -1;
82
83 ASSERT_RTNL();
84
85 if (!have_ifidx && !have_wdev_id)
86 return ERR_PTR(-EINVAL);
87
88 if (have_ifidx)
89 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
90 if (have_wdev_id) {
91 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
92 wiphy_idx = wdev_id >> 32;
93 }
94
95 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
96 struct wireless_dev *wdev;
97
98 if (wiphy_net(&rdev->wiphy) != netns)
99 continue;
100
101 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
102 continue;
103
104 list_for_each_entry(wdev, &rdev->wdev_list, list) {
105 if (have_ifidx && wdev->netdev &&
106 wdev->netdev->ifindex == ifidx) {
107 result = wdev;
108 break;
109 }
110 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
111 result = wdev;
112 break;
113 }
114 }
115
116 if (result)
117 break;
118 }
119
120 if (result)
121 return result;
122 return ERR_PTR(-ENODEV);
123 }
124
125 static struct cfg80211_registered_device *
126 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
127 {
128 struct cfg80211_registered_device *rdev = NULL, *tmp;
129 struct net_device *netdev;
130
131 ASSERT_RTNL();
132
133 if (!attrs[NL80211_ATTR_WIPHY] &&
134 !attrs[NL80211_ATTR_IFINDEX] &&
135 !attrs[NL80211_ATTR_WDEV])
136 return ERR_PTR(-EINVAL);
137
138 if (attrs[NL80211_ATTR_WIPHY])
139 rdev = cfg80211_rdev_by_wiphy_idx(
140 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
141
142 if (attrs[NL80211_ATTR_WDEV]) {
143 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
144 struct wireless_dev *wdev;
145 bool found = false;
146
147 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
148 if (tmp) {
149 /* make sure wdev exists */
150 list_for_each_entry(wdev, &tmp->wdev_list, list) {
151 if (wdev->identifier != (u32)wdev_id)
152 continue;
153 found = true;
154 break;
155 }
156
157 if (!found)
158 tmp = NULL;
159
160 if (rdev && tmp != rdev)
161 return ERR_PTR(-EINVAL);
162 rdev = tmp;
163 }
164 }
165
166 if (attrs[NL80211_ATTR_IFINDEX]) {
167 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
168 netdev = __dev_get_by_index(netns, ifindex);
169 if (netdev) {
170 if (netdev->ieee80211_ptr)
171 tmp = wiphy_to_rdev(
172 netdev->ieee80211_ptr->wiphy);
173 else
174 tmp = NULL;
175
176 /* not wireless device -- return error */
177 if (!tmp)
178 return ERR_PTR(-EINVAL);
179
180 /* mismatch -- return error */
181 if (rdev && tmp != rdev)
182 return ERR_PTR(-EINVAL);
183
184 rdev = tmp;
185 }
186 }
187
188 if (!rdev)
189 return ERR_PTR(-ENODEV);
190
191 if (netns != wiphy_net(&rdev->wiphy))
192 return ERR_PTR(-ENODEV);
193
194 return rdev;
195 }
196
197 /*
198 * This function returns a pointer to the driver
199 * that the genl_info item that is passed refers to.
200 *
201 * The result of this can be a PTR_ERR and hence must
202 * be checked with IS_ERR() for errors.
203 */
204 static struct cfg80211_registered_device *
205 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
206 {
207 return __cfg80211_rdev_from_attrs(netns, info->attrs);
208 }
209
210 /* policy for the attributes */
211 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
212 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
213 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
214 .len = 20-1 },
215 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
216
217 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
219 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
220 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
222
223 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
224 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
226 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
228
229 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
230 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
231 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
232
233 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
234 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
235
236 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
237 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
238 .len = WLAN_MAX_KEY_LEN },
239 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
240 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
241 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
242 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
243 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
244
245 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
246 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
247 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
248 .len = IEEE80211_MAX_DATA_LEN },
249 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
252 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
253 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
255 .len = NL80211_MAX_SUPP_RATES },
256 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
257 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
258 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
259 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
260 .len = IEEE80211_MAX_MESH_ID_LEN },
261 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
262
263 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
264 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
265
266 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
267 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
268 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
270 .len = NL80211_MAX_SUPP_RATES },
271 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
272
273 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
274 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
275
276 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
277
278 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
279 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
280 .len = IEEE80211_MAX_DATA_LEN },
281 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
282 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
283
284 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
285 .len = IEEE80211_MAX_SSID_LEN },
286 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
287 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
288 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
289 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
290 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
291 [NL80211_ATTR_STA_FLAGS2] = {
292 .len = sizeof(struct nl80211_sta_flag_update),
293 },
294 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
295 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
296 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
298 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
299 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
300 [NL80211_ATTR_PID] = { .type = NLA_U32 },
301 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
302 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
303 .len = WLAN_PMKID_LEN },
304 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
305 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
306 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
307 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
308 .len = IEEE80211_MAX_DATA_LEN },
309 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
310 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
311 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
312 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
313 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
314 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
315 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
316 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
317 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
318 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
319 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
320 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
321 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
322 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
323 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
324 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
325 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
326 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
327 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
328 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
329 .len = IEEE80211_MAX_DATA_LEN },
330 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
333 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
334 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
335 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
336 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
337 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
339 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
340 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
341 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
342 .len = IEEE80211_MAX_DATA_LEN },
343 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
344 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
345 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
346 .len = NL80211_HT_CAPABILITY_LEN
347 },
348 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
349 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
350 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
351 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
352 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
353 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
354 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
355 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
356 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
357 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
358 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
359 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
360 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
361 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
362 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
363 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
364 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
365 .len = NL80211_VHT_CAPABILITY_LEN,
366 },
367 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
368 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
369 .len = IEEE80211_MAX_DATA_LEN },
370 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
371 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
372 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
373 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
374 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
375 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
376 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
377 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
378 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
379 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
380 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
381 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
382 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
383 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
384 .len = IEEE80211_QOS_MAP_LEN_MAX },
385 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
386 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
387 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
388 [NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
389 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
390 };
391
392 /* policy for the key attributes */
393 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
394 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
395 [NL80211_KEY_IDX] = { .type = NLA_U8 },
396 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
397 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
398 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
399 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
400 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
401 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
402 };
403
404 /* policy for the key default flags */
405 static const struct nla_policy
406 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
407 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
408 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
409 };
410
411 /* policy for WoWLAN attributes */
412 static const struct nla_policy
413 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
414 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
415 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
416 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
417 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
418 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
419 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
420 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
421 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
422 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
423 };
424
425 static const struct nla_policy
426 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
427 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
428 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
429 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
430 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
431 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
432 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
433 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
434 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
435 },
436 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
437 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
438 },
439 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
440 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
441 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
442 };
443
444 /* policy for coalesce rule attributes */
445 static const struct nla_policy
446 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
447 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
448 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
449 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
450 };
451
452 /* policy for GTK rekey offload attributes */
453 static const struct nla_policy
454 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
455 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
456 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
457 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
458 };
459
460 static const struct nla_policy
461 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
462 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
463 .len = IEEE80211_MAX_SSID_LEN },
464 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
465 };
466
467 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
468 struct netlink_callback *cb,
469 struct cfg80211_registered_device **rdev,
470 struct wireless_dev **wdev)
471 {
472 int err;
473
474 rtnl_lock();
475
476 if (!cb->args[0]) {
477 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
478 nl80211_fam.attrbuf, nl80211_fam.maxattr,
479 nl80211_policy);
480 if (err)
481 goto out_unlock;
482
483 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
484 nl80211_fam.attrbuf);
485 if (IS_ERR(*wdev)) {
486 err = PTR_ERR(*wdev);
487 goto out_unlock;
488 }
489 *rdev = wiphy_to_rdev((*wdev)->wiphy);
490 /* 0 is the first index - add 1 to parse only once */
491 cb->args[0] = (*rdev)->wiphy_idx + 1;
492 cb->args[1] = (*wdev)->identifier;
493 } else {
494 /* subtract the 1 again here */
495 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
496 struct wireless_dev *tmp;
497
498 if (!wiphy) {
499 err = -ENODEV;
500 goto out_unlock;
501 }
502 *rdev = wiphy_to_rdev(wiphy);
503 *wdev = NULL;
504
505 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
506 if (tmp->identifier == cb->args[1]) {
507 *wdev = tmp;
508 break;
509 }
510 }
511
512 if (!*wdev) {
513 err = -ENODEV;
514 goto out_unlock;
515 }
516 }
517
518 return 0;
519 out_unlock:
520 rtnl_unlock();
521 return err;
522 }
523
524 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
525 {
526 rtnl_unlock();
527 }
528
529 /* IE validation */
530 static bool is_valid_ie_attr(const struct nlattr *attr)
531 {
532 const u8 *pos;
533 int len;
534
535 if (!attr)
536 return true;
537
538 pos = nla_data(attr);
539 len = nla_len(attr);
540
541 while (len) {
542 u8 elemlen;
543
544 if (len < 2)
545 return false;
546 len -= 2;
547
548 elemlen = pos[1];
549 if (elemlen > len)
550 return false;
551
552 len -= elemlen;
553 pos += 2 + elemlen;
554 }
555
556 return true;
557 }
558
559 /* message building helper */
560 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
561 int flags, u8 cmd)
562 {
563 /* since there is no private header just add the generic one */
564 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
565 }
566
567 static int nl80211_msg_put_channel(struct sk_buff *msg,
568 struct ieee80211_channel *chan,
569 bool large)
570 {
571 /* Some channels must be completely excluded from the
572 * list to protect old user-space tools from breaking
573 */
574 if (!large && chan->flags &
575 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
576 return 0;
577
578 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
579 chan->center_freq))
580 goto nla_put_failure;
581
582 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
583 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
584 goto nla_put_failure;
585 if (chan->flags & IEEE80211_CHAN_NO_IR) {
586 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
587 goto nla_put_failure;
588 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
589 goto nla_put_failure;
590 }
591 if (chan->flags & IEEE80211_CHAN_RADAR) {
592 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
593 goto nla_put_failure;
594 if (large) {
595 u32 time;
596
597 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
598
599 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
600 chan->dfs_state))
601 goto nla_put_failure;
602 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
603 time))
604 goto nla_put_failure;
605 if (nla_put_u32(msg,
606 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
607 chan->dfs_cac_ms))
608 goto nla_put_failure;
609 }
610 }
611
612 if (large) {
613 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
614 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
615 goto nla_put_failure;
616 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
617 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
618 goto nla_put_failure;
619 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
620 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
621 goto nla_put_failure;
622 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
623 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
624 goto nla_put_failure;
625 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
626 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
627 goto nla_put_failure;
628 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
629 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
630 goto nla_put_failure;
631 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
632 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
633 goto nla_put_failure;
634 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
635 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
636 goto nla_put_failure;
637 }
638
639 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
640 DBM_TO_MBM(chan->max_power)))
641 goto nla_put_failure;
642
643 return 0;
644
645 nla_put_failure:
646 return -ENOBUFS;
647 }
648
649 /* netlink command implementations */
650
651 struct key_parse {
652 struct key_params p;
653 int idx;
654 int type;
655 bool def, defmgmt;
656 bool def_uni, def_multi;
657 };
658
659 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
660 {
661 struct nlattr *tb[NL80211_KEY_MAX + 1];
662 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
663 nl80211_key_policy);
664 if (err)
665 return err;
666
667 k->def = !!tb[NL80211_KEY_DEFAULT];
668 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
669
670 if (k->def) {
671 k->def_uni = true;
672 k->def_multi = true;
673 }
674 if (k->defmgmt)
675 k->def_multi = true;
676
677 if (tb[NL80211_KEY_IDX])
678 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
679
680 if (tb[NL80211_KEY_DATA]) {
681 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
682 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
683 }
684
685 if (tb[NL80211_KEY_SEQ]) {
686 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
687 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
688 }
689
690 if (tb[NL80211_KEY_CIPHER])
691 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
692
693 if (tb[NL80211_KEY_TYPE]) {
694 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
695 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
696 return -EINVAL;
697 }
698
699 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
700 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
701 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
702 tb[NL80211_KEY_DEFAULT_TYPES],
703 nl80211_key_default_policy);
704 if (err)
705 return err;
706
707 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
708 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
709 }
710
711 return 0;
712 }
713
714 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
715 {
716 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
717 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
718 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
719 }
720
721 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
722 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
723 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
724 }
725
726 if (info->attrs[NL80211_ATTR_KEY_IDX])
727 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
728
729 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
730 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
731
732 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
733 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
734
735 if (k->def) {
736 k->def_uni = true;
737 k->def_multi = true;
738 }
739 if (k->defmgmt)
740 k->def_multi = true;
741
742 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
743 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
744 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
745 return -EINVAL;
746 }
747
748 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
749 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
750 int err = nla_parse_nested(
751 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
752 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
753 nl80211_key_default_policy);
754 if (err)
755 return err;
756
757 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
758 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
759 }
760
761 return 0;
762 }
763
764 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
765 {
766 int err;
767
768 memset(k, 0, sizeof(*k));
769 k->idx = -1;
770 k->type = -1;
771
772 if (info->attrs[NL80211_ATTR_KEY])
773 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
774 else
775 err = nl80211_parse_key_old(info, k);
776
777 if (err)
778 return err;
779
780 if (k->def && k->defmgmt)
781 return -EINVAL;
782
783 if (k->defmgmt) {
784 if (k->def_uni || !k->def_multi)
785 return -EINVAL;
786 }
787
788 if (k->idx != -1) {
789 if (k->defmgmt) {
790 if (k->idx < 4 || k->idx > 5)
791 return -EINVAL;
792 } else if (k->def) {
793 if (k->idx < 0 || k->idx > 3)
794 return -EINVAL;
795 } else {
796 if (k->idx < 0 || k->idx > 5)
797 return -EINVAL;
798 }
799 }
800
801 return 0;
802 }
803
804 static struct cfg80211_cached_keys *
805 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
806 struct nlattr *keys, bool *no_ht)
807 {
808 struct key_parse parse;
809 struct nlattr *key;
810 struct cfg80211_cached_keys *result;
811 int rem, err, def = 0;
812
813 result = kzalloc(sizeof(*result), GFP_KERNEL);
814 if (!result)
815 return ERR_PTR(-ENOMEM);
816
817 result->def = -1;
818 result->defmgmt = -1;
819
820 nla_for_each_nested(key, keys, rem) {
821 memset(&parse, 0, sizeof(parse));
822 parse.idx = -1;
823
824 err = nl80211_parse_key_new(key, &parse);
825 if (err)
826 goto error;
827 err = -EINVAL;
828 if (!parse.p.key)
829 goto error;
830 if (parse.idx < 0 || parse.idx > 4)
831 goto error;
832 if (parse.def) {
833 if (def)
834 goto error;
835 def = 1;
836 result->def = parse.idx;
837 if (!parse.def_uni || !parse.def_multi)
838 goto error;
839 } else if (parse.defmgmt)
840 goto error;
841 err = cfg80211_validate_key_settings(rdev, &parse.p,
842 parse.idx, false, NULL);
843 if (err)
844 goto error;
845 result->params[parse.idx].cipher = parse.p.cipher;
846 result->params[parse.idx].key_len = parse.p.key_len;
847 result->params[parse.idx].key = result->data[parse.idx];
848 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
849
850 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
851 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
852 if (no_ht)
853 *no_ht = true;
854 }
855 }
856
857 return result;
858 error:
859 kfree(result);
860 return ERR_PTR(err);
861 }
862
863 static int nl80211_key_allowed(struct wireless_dev *wdev)
864 {
865 ASSERT_WDEV_LOCK(wdev);
866
867 switch (wdev->iftype) {
868 case NL80211_IFTYPE_AP:
869 case NL80211_IFTYPE_AP_VLAN:
870 case NL80211_IFTYPE_P2P_GO:
871 case NL80211_IFTYPE_MESH_POINT:
872 break;
873 case NL80211_IFTYPE_ADHOC:
874 case NL80211_IFTYPE_STATION:
875 case NL80211_IFTYPE_P2P_CLIENT:
876 if (!wdev->current_bss)
877 return -ENOLINK;
878 break;
879 default:
880 return -EINVAL;
881 }
882
883 return 0;
884 }
885
886 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
887 struct nlattr *tb)
888 {
889 struct ieee80211_channel *chan;
890
891 if (tb == NULL)
892 return NULL;
893 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
894 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
895 return NULL;
896 return chan;
897 }
898
899 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
900 {
901 struct nlattr *nl_modes = nla_nest_start(msg, attr);
902 int i;
903
904 if (!nl_modes)
905 goto nla_put_failure;
906
907 i = 0;
908 while (ifmodes) {
909 if ((ifmodes & 1) && nla_put_flag(msg, i))
910 goto nla_put_failure;
911 ifmodes >>= 1;
912 i++;
913 }
914
915 nla_nest_end(msg, nl_modes);
916 return 0;
917
918 nla_put_failure:
919 return -ENOBUFS;
920 }
921
922 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
923 struct sk_buff *msg,
924 bool large)
925 {
926 struct nlattr *nl_combis;
927 int i, j;
928
929 nl_combis = nla_nest_start(msg,
930 NL80211_ATTR_INTERFACE_COMBINATIONS);
931 if (!nl_combis)
932 goto nla_put_failure;
933
934 for (i = 0; i < wiphy->n_iface_combinations; i++) {
935 const struct ieee80211_iface_combination *c;
936 struct nlattr *nl_combi, *nl_limits;
937
938 c = &wiphy->iface_combinations[i];
939
940 nl_combi = nla_nest_start(msg, i + 1);
941 if (!nl_combi)
942 goto nla_put_failure;
943
944 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
945 if (!nl_limits)
946 goto nla_put_failure;
947
948 for (j = 0; j < c->n_limits; j++) {
949 struct nlattr *nl_limit;
950
951 nl_limit = nla_nest_start(msg, j + 1);
952 if (!nl_limit)
953 goto nla_put_failure;
954 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
955 c->limits[j].max))
956 goto nla_put_failure;
957 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
958 c->limits[j].types))
959 goto nla_put_failure;
960 nla_nest_end(msg, nl_limit);
961 }
962
963 nla_nest_end(msg, nl_limits);
964
965 if (c->beacon_int_infra_match &&
966 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
967 goto nla_put_failure;
968 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
969 c->num_different_channels) ||
970 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
971 c->max_interfaces))
972 goto nla_put_failure;
973 if (large &&
974 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
975 c->radar_detect_widths) ||
976 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
977 c->radar_detect_regions)))
978 goto nla_put_failure;
979
980 nla_nest_end(msg, nl_combi);
981 }
982
983 nla_nest_end(msg, nl_combis);
984
985 return 0;
986 nla_put_failure:
987 return -ENOBUFS;
988 }
989
990 #ifdef CONFIG_PM
991 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
992 struct sk_buff *msg)
993 {
994 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
995 struct nlattr *nl_tcp;
996
997 if (!tcp)
998 return 0;
999
1000 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1001 if (!nl_tcp)
1002 return -ENOBUFS;
1003
1004 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1005 tcp->data_payload_max))
1006 return -ENOBUFS;
1007
1008 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1009 tcp->data_payload_max))
1010 return -ENOBUFS;
1011
1012 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1013 return -ENOBUFS;
1014
1015 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1016 sizeof(*tcp->tok), tcp->tok))
1017 return -ENOBUFS;
1018
1019 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1020 tcp->data_interval_max))
1021 return -ENOBUFS;
1022
1023 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1024 tcp->wake_payload_max))
1025 return -ENOBUFS;
1026
1027 nla_nest_end(msg, nl_tcp);
1028 return 0;
1029 }
1030
1031 static int nl80211_send_wowlan(struct sk_buff *msg,
1032 struct cfg80211_registered_device *rdev,
1033 bool large)
1034 {
1035 struct nlattr *nl_wowlan;
1036
1037 if (!rdev->wiphy.wowlan)
1038 return 0;
1039
1040 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1041 if (!nl_wowlan)
1042 return -ENOBUFS;
1043
1044 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1045 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1046 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1047 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1048 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1049 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1050 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1051 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1052 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1053 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1054 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1055 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1056 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1057 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1058 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1059 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1060 return -ENOBUFS;
1061
1062 if (rdev->wiphy.wowlan->n_patterns) {
1063 struct nl80211_pattern_support pat = {
1064 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1065 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1066 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1067 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1068 };
1069
1070 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1071 sizeof(pat), &pat))
1072 return -ENOBUFS;
1073 }
1074
1075 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1076 return -ENOBUFS;
1077
1078 nla_nest_end(msg, nl_wowlan);
1079
1080 return 0;
1081 }
1082 #endif
1083
1084 static int nl80211_send_coalesce(struct sk_buff *msg,
1085 struct cfg80211_registered_device *rdev)
1086 {
1087 struct nl80211_coalesce_rule_support rule;
1088
1089 if (!rdev->wiphy.coalesce)
1090 return 0;
1091
1092 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1093 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1094 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1095 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1096 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1097 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1098
1099 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1100 return -ENOBUFS;
1101
1102 return 0;
1103 }
1104
1105 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1106 struct ieee80211_supported_band *sband)
1107 {
1108 struct nlattr *nl_rates, *nl_rate;
1109 struct ieee80211_rate *rate;
1110 int i;
1111
1112 /* add HT info */
1113 if (sband->ht_cap.ht_supported &&
1114 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1115 sizeof(sband->ht_cap.mcs),
1116 &sband->ht_cap.mcs) ||
1117 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1118 sband->ht_cap.cap) ||
1119 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1120 sband->ht_cap.ampdu_factor) ||
1121 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1122 sband->ht_cap.ampdu_density)))
1123 return -ENOBUFS;
1124
1125 /* add VHT info */
1126 if (sband->vht_cap.vht_supported &&
1127 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1128 sizeof(sband->vht_cap.vht_mcs),
1129 &sband->vht_cap.vht_mcs) ||
1130 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1131 sband->vht_cap.cap)))
1132 return -ENOBUFS;
1133
1134 /* add bitrates */
1135 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1136 if (!nl_rates)
1137 return -ENOBUFS;
1138
1139 for (i = 0; i < sband->n_bitrates; i++) {
1140 nl_rate = nla_nest_start(msg, i);
1141 if (!nl_rate)
1142 return -ENOBUFS;
1143
1144 rate = &sband->bitrates[i];
1145 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1146 rate->bitrate))
1147 return -ENOBUFS;
1148 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1149 nla_put_flag(msg,
1150 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1151 return -ENOBUFS;
1152
1153 nla_nest_end(msg, nl_rate);
1154 }
1155
1156 nla_nest_end(msg, nl_rates);
1157
1158 return 0;
1159 }
1160
1161 static int
1162 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1163 const struct ieee80211_txrx_stypes *mgmt_stypes)
1164 {
1165 u16 stypes;
1166 struct nlattr *nl_ftypes, *nl_ifs;
1167 enum nl80211_iftype ift;
1168 int i;
1169
1170 if (!mgmt_stypes)
1171 return 0;
1172
1173 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1174 if (!nl_ifs)
1175 return -ENOBUFS;
1176
1177 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1178 nl_ftypes = nla_nest_start(msg, ift);
1179 if (!nl_ftypes)
1180 return -ENOBUFS;
1181 i = 0;
1182 stypes = mgmt_stypes[ift].tx;
1183 while (stypes) {
1184 if ((stypes & 1) &&
1185 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1186 (i << 4) | IEEE80211_FTYPE_MGMT))
1187 return -ENOBUFS;
1188 stypes >>= 1;
1189 i++;
1190 }
1191 nla_nest_end(msg, nl_ftypes);
1192 }
1193
1194 nla_nest_end(msg, nl_ifs);
1195
1196 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1197 if (!nl_ifs)
1198 return -ENOBUFS;
1199
1200 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1201 nl_ftypes = nla_nest_start(msg, ift);
1202 if (!nl_ftypes)
1203 return -ENOBUFS;
1204 i = 0;
1205 stypes = mgmt_stypes[ift].rx;
1206 while (stypes) {
1207 if ((stypes & 1) &&
1208 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1209 (i << 4) | IEEE80211_FTYPE_MGMT))
1210 return -ENOBUFS;
1211 stypes >>= 1;
1212 i++;
1213 }
1214 nla_nest_end(msg, nl_ftypes);
1215 }
1216 nla_nest_end(msg, nl_ifs);
1217
1218 return 0;
1219 }
1220
1221 struct nl80211_dump_wiphy_state {
1222 s64 filter_wiphy;
1223 long start;
1224 long split_start, band_start, chan_start;
1225 bool split;
1226 };
1227
1228 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1229 enum nl80211_commands cmd,
1230 struct sk_buff *msg, u32 portid, u32 seq,
1231 int flags, struct nl80211_dump_wiphy_state *state)
1232 {
1233 void *hdr;
1234 struct nlattr *nl_bands, *nl_band;
1235 struct nlattr *nl_freqs, *nl_freq;
1236 struct nlattr *nl_cmds;
1237 enum ieee80211_band band;
1238 struct ieee80211_channel *chan;
1239 int i;
1240 const struct ieee80211_txrx_stypes *mgmt_stypes =
1241 rdev->wiphy.mgmt_stypes;
1242 u32 features;
1243
1244 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1245 if (!hdr)
1246 return -ENOBUFS;
1247
1248 if (WARN_ON(!state))
1249 return -EINVAL;
1250
1251 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1252 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1253 wiphy_name(&rdev->wiphy)) ||
1254 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1255 cfg80211_rdev_list_generation))
1256 goto nla_put_failure;
1257
1258 if (cmd != NL80211_CMD_NEW_WIPHY)
1259 goto finish;
1260
1261 switch (state->split_start) {
1262 case 0:
1263 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1264 rdev->wiphy.retry_short) ||
1265 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1266 rdev->wiphy.retry_long) ||
1267 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1268 rdev->wiphy.frag_threshold) ||
1269 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1270 rdev->wiphy.rts_threshold) ||
1271 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1272 rdev->wiphy.coverage_class) ||
1273 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1274 rdev->wiphy.max_scan_ssids) ||
1275 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1276 rdev->wiphy.max_sched_scan_ssids) ||
1277 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1278 rdev->wiphy.max_scan_ie_len) ||
1279 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1280 rdev->wiphy.max_sched_scan_ie_len) ||
1281 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1282 rdev->wiphy.max_match_sets))
1283 goto nla_put_failure;
1284
1285 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1286 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1287 goto nla_put_failure;
1288 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1289 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1290 goto nla_put_failure;
1291 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1292 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1293 goto nla_put_failure;
1294 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1295 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1296 goto nla_put_failure;
1297 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1298 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1299 goto nla_put_failure;
1300 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1301 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1302 goto nla_put_failure;
1303 state->split_start++;
1304 if (state->split)
1305 break;
1306 case 1:
1307 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1308 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1309 rdev->wiphy.cipher_suites))
1310 goto nla_put_failure;
1311
1312 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1313 rdev->wiphy.max_num_pmkids))
1314 goto nla_put_failure;
1315
1316 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1317 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1318 goto nla_put_failure;
1319
1320 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1321 rdev->wiphy.available_antennas_tx) ||
1322 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1323 rdev->wiphy.available_antennas_rx))
1324 goto nla_put_failure;
1325
1326 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1327 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1328 rdev->wiphy.probe_resp_offload))
1329 goto nla_put_failure;
1330
1331 if ((rdev->wiphy.available_antennas_tx ||
1332 rdev->wiphy.available_antennas_rx) &&
1333 rdev->ops->get_antenna) {
1334 u32 tx_ant = 0, rx_ant = 0;
1335 int res;
1336 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1337 if (!res) {
1338 if (nla_put_u32(msg,
1339 NL80211_ATTR_WIPHY_ANTENNA_TX,
1340 tx_ant) ||
1341 nla_put_u32(msg,
1342 NL80211_ATTR_WIPHY_ANTENNA_RX,
1343 rx_ant))
1344 goto nla_put_failure;
1345 }
1346 }
1347
1348 state->split_start++;
1349 if (state->split)
1350 break;
1351 case 2:
1352 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1353 rdev->wiphy.interface_modes))
1354 goto nla_put_failure;
1355 state->split_start++;
1356 if (state->split)
1357 break;
1358 case 3:
1359 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1360 if (!nl_bands)
1361 goto nla_put_failure;
1362
1363 for (band = state->band_start;
1364 band < IEEE80211_NUM_BANDS; band++) {
1365 struct ieee80211_supported_band *sband;
1366
1367 sband = rdev->wiphy.bands[band];
1368
1369 if (!sband)
1370 continue;
1371
1372 nl_band = nla_nest_start(msg, band);
1373 if (!nl_band)
1374 goto nla_put_failure;
1375
1376 switch (state->chan_start) {
1377 case 0:
1378 if (nl80211_send_band_rateinfo(msg, sband))
1379 goto nla_put_failure;
1380 state->chan_start++;
1381 if (state->split)
1382 break;
1383 default:
1384 /* add frequencies */
1385 nl_freqs = nla_nest_start(
1386 msg, NL80211_BAND_ATTR_FREQS);
1387 if (!nl_freqs)
1388 goto nla_put_failure;
1389
1390 for (i = state->chan_start - 1;
1391 i < sband->n_channels;
1392 i++) {
1393 nl_freq = nla_nest_start(msg, i);
1394 if (!nl_freq)
1395 goto nla_put_failure;
1396
1397 chan = &sband->channels[i];
1398
1399 if (nl80211_msg_put_channel(
1400 msg, chan,
1401 state->split))
1402 goto nla_put_failure;
1403
1404 nla_nest_end(msg, nl_freq);
1405 if (state->split)
1406 break;
1407 }
1408 if (i < sband->n_channels)
1409 state->chan_start = i + 2;
1410 else
1411 state->chan_start = 0;
1412 nla_nest_end(msg, nl_freqs);
1413 }
1414
1415 nla_nest_end(msg, nl_band);
1416
1417 if (state->split) {
1418 /* start again here */
1419 if (state->chan_start)
1420 band--;
1421 break;
1422 }
1423 }
1424 nla_nest_end(msg, nl_bands);
1425
1426 if (band < IEEE80211_NUM_BANDS)
1427 state->band_start = band + 1;
1428 else
1429 state->band_start = 0;
1430
1431 /* if bands & channels are done, continue outside */
1432 if (state->band_start == 0 && state->chan_start == 0)
1433 state->split_start++;
1434 if (state->split)
1435 break;
1436 case 4:
1437 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1438 if (!nl_cmds)
1439 goto nla_put_failure;
1440
1441 i = 0;
1442 #define CMD(op, n) \
1443 do { \
1444 if (rdev->ops->op) { \
1445 i++; \
1446 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1447 goto nla_put_failure; \
1448 } \
1449 } while (0)
1450
1451 CMD(add_virtual_intf, NEW_INTERFACE);
1452 CMD(change_virtual_intf, SET_INTERFACE);
1453 CMD(add_key, NEW_KEY);
1454 CMD(start_ap, START_AP);
1455 CMD(add_station, NEW_STATION);
1456 CMD(add_mpath, NEW_MPATH);
1457 CMD(update_mesh_config, SET_MESH_CONFIG);
1458 CMD(change_bss, SET_BSS);
1459 CMD(auth, AUTHENTICATE);
1460 CMD(assoc, ASSOCIATE);
1461 CMD(deauth, DEAUTHENTICATE);
1462 CMD(disassoc, DISASSOCIATE);
1463 CMD(join_ibss, JOIN_IBSS);
1464 CMD(join_mesh, JOIN_MESH);
1465 CMD(set_pmksa, SET_PMKSA);
1466 CMD(del_pmksa, DEL_PMKSA);
1467 CMD(flush_pmksa, FLUSH_PMKSA);
1468 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1469 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1470 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1471 CMD(mgmt_tx, FRAME);
1472 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1473 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1474 i++;
1475 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1476 goto nla_put_failure;
1477 }
1478 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1479 rdev->ops->join_mesh) {
1480 i++;
1481 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1482 goto nla_put_failure;
1483 }
1484 CMD(set_wds_peer, SET_WDS_PEER);
1485 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1486 CMD(tdls_mgmt, TDLS_MGMT);
1487 CMD(tdls_oper, TDLS_OPER);
1488 }
1489 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1490 CMD(sched_scan_start, START_SCHED_SCAN);
1491 CMD(probe_client, PROBE_CLIENT);
1492 CMD(set_noack_map, SET_NOACK_MAP);
1493 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1494 i++;
1495 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1496 goto nla_put_failure;
1497 }
1498 CMD(start_p2p_device, START_P2P_DEVICE);
1499 CMD(set_mcast_rate, SET_MCAST_RATE);
1500 #ifdef CONFIG_NL80211_TESTMODE
1501 CMD(testmode_cmd, TESTMODE);
1502 #endif
1503 if (state->split) {
1504 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1505 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1506 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1507 CMD(channel_switch, CHANNEL_SWITCH);
1508 CMD(set_qos_map, SET_QOS_MAP);
1509 }
1510 /* add into the if now */
1511 #undef CMD
1512
1513 if (rdev->ops->connect || rdev->ops->auth) {
1514 i++;
1515 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1516 goto nla_put_failure;
1517 }
1518
1519 if (rdev->ops->disconnect || rdev->ops->deauth) {
1520 i++;
1521 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1522 goto nla_put_failure;
1523 }
1524
1525 nla_nest_end(msg, nl_cmds);
1526 state->split_start++;
1527 if (state->split)
1528 break;
1529 case 5:
1530 if (rdev->ops->remain_on_channel &&
1531 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1532 nla_put_u32(msg,
1533 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1534 rdev->wiphy.max_remain_on_channel_duration))
1535 goto nla_put_failure;
1536
1537 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1538 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1539 goto nla_put_failure;
1540
1541 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1542 goto nla_put_failure;
1543 state->split_start++;
1544 if (state->split)
1545 break;
1546 case 6:
1547 #ifdef CONFIG_PM
1548 if (nl80211_send_wowlan(msg, rdev, state->split))
1549 goto nla_put_failure;
1550 state->split_start++;
1551 if (state->split)
1552 break;
1553 #else
1554 state->split_start++;
1555 #endif
1556 case 7:
1557 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1558 rdev->wiphy.software_iftypes))
1559 goto nla_put_failure;
1560
1561 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1562 state->split))
1563 goto nla_put_failure;
1564
1565 state->split_start++;
1566 if (state->split)
1567 break;
1568 case 8:
1569 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1570 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1571 rdev->wiphy.ap_sme_capa))
1572 goto nla_put_failure;
1573
1574 features = rdev->wiphy.features;
1575 /*
1576 * We can only add the per-channel limit information if the
1577 * dump is split, otherwise it makes it too big. Therefore
1578 * only advertise it in that case.
1579 */
1580 if (state->split)
1581 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1582 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1583 goto nla_put_failure;
1584
1585 if (rdev->wiphy.ht_capa_mod_mask &&
1586 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1587 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1588 rdev->wiphy.ht_capa_mod_mask))
1589 goto nla_put_failure;
1590
1591 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1592 rdev->wiphy.max_acl_mac_addrs &&
1593 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1594 rdev->wiphy.max_acl_mac_addrs))
1595 goto nla_put_failure;
1596
1597 /*
1598 * Any information below this point is only available to
1599 * applications that can deal with it being split. This
1600 * helps ensure that newly added capabilities don't break
1601 * older tools by overrunning their buffers.
1602 *
1603 * We still increment split_start so that in the split
1604 * case we'll continue with more data in the next round,
1605 * but break unconditionally so unsplit data stops here.
1606 */
1607 state->split_start++;
1608 break;
1609 case 9:
1610 if (rdev->wiphy.extended_capabilities &&
1611 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1612 rdev->wiphy.extended_capabilities_len,
1613 rdev->wiphy.extended_capabilities) ||
1614 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1615 rdev->wiphy.extended_capabilities_len,
1616 rdev->wiphy.extended_capabilities_mask)))
1617 goto nla_put_failure;
1618
1619 if (rdev->wiphy.vht_capa_mod_mask &&
1620 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1621 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1622 rdev->wiphy.vht_capa_mod_mask))
1623 goto nla_put_failure;
1624
1625 state->split_start++;
1626 break;
1627 case 10:
1628 if (nl80211_send_coalesce(msg, rdev))
1629 goto nla_put_failure;
1630
1631 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1632 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1633 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1634 goto nla_put_failure;
1635
1636 if (rdev->wiphy.max_ap_assoc_sta &&
1637 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1638 rdev->wiphy.max_ap_assoc_sta))
1639 goto nla_put_failure;
1640
1641 state->split_start++;
1642 break;
1643 case 11:
1644 if (rdev->wiphy.n_vendor_commands) {
1645 const struct nl80211_vendor_cmd_info *info;
1646 struct nlattr *nested;
1647
1648 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1649 if (!nested)
1650 goto nla_put_failure;
1651
1652 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1653 info = &rdev->wiphy.vendor_commands[i].info;
1654 if (nla_put(msg, i + 1, sizeof(*info), info))
1655 goto nla_put_failure;
1656 }
1657 nla_nest_end(msg, nested);
1658 }
1659
1660 if (rdev->wiphy.n_vendor_events) {
1661 const struct nl80211_vendor_cmd_info *info;
1662 struct nlattr *nested;
1663
1664 nested = nla_nest_start(msg,
1665 NL80211_ATTR_VENDOR_EVENTS);
1666 if (!nested)
1667 goto nla_put_failure;
1668
1669 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1670 info = &rdev->wiphy.vendor_events[i];
1671 if (nla_put(msg, i + 1, sizeof(*info), info))
1672 goto nla_put_failure;
1673 }
1674 nla_nest_end(msg, nested);
1675 }
1676 state->split_start++;
1677 break;
1678 case 12:
1679 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1680 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1681 rdev->wiphy.max_num_csa_counters))
1682 goto nla_put_failure;
1683
1684 /* done */
1685 state->split_start = 0;
1686 break;
1687 }
1688 finish:
1689 return genlmsg_end(msg, hdr);
1690
1691 nla_put_failure:
1692 genlmsg_cancel(msg, hdr);
1693 return -EMSGSIZE;
1694 }
1695
1696 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1697 struct netlink_callback *cb,
1698 struct nl80211_dump_wiphy_state *state)
1699 {
1700 struct nlattr **tb = nl80211_fam.attrbuf;
1701 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1702 tb, nl80211_fam.maxattr, nl80211_policy);
1703 /* ignore parse errors for backward compatibility */
1704 if (ret)
1705 return 0;
1706
1707 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1708 if (tb[NL80211_ATTR_WIPHY])
1709 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1710 if (tb[NL80211_ATTR_WDEV])
1711 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1712 if (tb[NL80211_ATTR_IFINDEX]) {
1713 struct net_device *netdev;
1714 struct cfg80211_registered_device *rdev;
1715 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1716
1717 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1718 if (!netdev)
1719 return -ENODEV;
1720 if (netdev->ieee80211_ptr) {
1721 rdev = wiphy_to_rdev(
1722 netdev->ieee80211_ptr->wiphy);
1723 state->filter_wiphy = rdev->wiphy_idx;
1724 }
1725 }
1726
1727 return 0;
1728 }
1729
1730 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1731 {
1732 int idx = 0, ret;
1733 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1734 struct cfg80211_registered_device *rdev;
1735
1736 rtnl_lock();
1737 if (!state) {
1738 state = kzalloc(sizeof(*state), GFP_KERNEL);
1739 if (!state) {
1740 rtnl_unlock();
1741 return -ENOMEM;
1742 }
1743 state->filter_wiphy = -1;
1744 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1745 if (ret) {
1746 kfree(state);
1747 rtnl_unlock();
1748 return ret;
1749 }
1750 cb->args[0] = (long)state;
1751 }
1752
1753 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1754 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1755 continue;
1756 if (++idx <= state->start)
1757 continue;
1758 if (state->filter_wiphy != -1 &&
1759 state->filter_wiphy != rdev->wiphy_idx)
1760 continue;
1761 /* attempt to fit multiple wiphy data chunks into the skb */
1762 do {
1763 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1764 skb,
1765 NETLINK_CB(cb->skb).portid,
1766 cb->nlh->nlmsg_seq,
1767 NLM_F_MULTI, state);
1768 if (ret < 0) {
1769 /*
1770 * If sending the wiphy data didn't fit (ENOBUFS
1771 * or EMSGSIZE returned), this SKB is still
1772 * empty (so it's not too big because another
1773 * wiphy dataset is already in the skb) and
1774 * we've not tried to adjust the dump allocation
1775 * yet ... then adjust the alloc size to be
1776 * bigger, and return 1 but with the empty skb.
1777 * This results in an empty message being RX'ed
1778 * in userspace, but that is ignored.
1779 *
1780 * We can then retry with the larger buffer.
1781 */
1782 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1783 !skb->len && !state->split &&
1784 cb->min_dump_alloc < 4096) {
1785 cb->min_dump_alloc = 4096;
1786 state->split_start = 0;
1787 rtnl_unlock();
1788 return 1;
1789 }
1790 idx--;
1791 break;
1792 }
1793 } while (state->split_start > 0);
1794 break;
1795 }
1796 rtnl_unlock();
1797
1798 state->start = idx;
1799
1800 return skb->len;
1801 }
1802
1803 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1804 {
1805 kfree((void *)cb->args[0]);
1806 return 0;
1807 }
1808
1809 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1810 {
1811 struct sk_buff *msg;
1812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1813 struct nl80211_dump_wiphy_state state = {};
1814
1815 msg = nlmsg_new(4096, GFP_KERNEL);
1816 if (!msg)
1817 return -ENOMEM;
1818
1819 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1820 info->snd_portid, info->snd_seq, 0,
1821 &state) < 0) {
1822 nlmsg_free(msg);
1823 return -ENOBUFS;
1824 }
1825
1826 return genlmsg_reply(msg, info);
1827 }
1828
1829 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1830 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1831 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1832 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1833 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1834 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1835 };
1836
1837 static int parse_txq_params(struct nlattr *tb[],
1838 struct ieee80211_txq_params *txq_params)
1839 {
1840 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1841 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1842 !tb[NL80211_TXQ_ATTR_AIFS])
1843 return -EINVAL;
1844
1845 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1846 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1847 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1848 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1849 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1850
1851 if (txq_params->ac >= NL80211_NUM_ACS)
1852 return -EINVAL;
1853
1854 return 0;
1855 }
1856
1857 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1858 {
1859 /*
1860 * You can only set the channel explicitly for WDS interfaces,
1861 * all others have their channel managed via their respective
1862 * "establish a connection" command (connect, join, ...)
1863 *
1864 * For AP/GO and mesh mode, the channel can be set with the
1865 * channel userspace API, but is only stored and passed to the
1866 * low-level driver when the AP starts or the mesh is joined.
1867 * This is for backward compatibility, userspace can also give
1868 * the channel in the start-ap or join-mesh commands instead.
1869 *
1870 * Monitors are special as they are normally slaved to
1871 * whatever else is going on, so they have their own special
1872 * operation to set the monitor channel if possible.
1873 */
1874 return !wdev ||
1875 wdev->iftype == NL80211_IFTYPE_AP ||
1876 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1877 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1878 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1879 }
1880
1881 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1882 struct genl_info *info,
1883 struct cfg80211_chan_def *chandef)
1884 {
1885 u32 control_freq;
1886
1887 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1888 return -EINVAL;
1889
1890 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1891
1892 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1893 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1894 chandef->center_freq1 = control_freq;
1895 chandef->center_freq2 = 0;
1896
1897 /* Primary channel not allowed */
1898 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1899 return -EINVAL;
1900
1901 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1902 enum nl80211_channel_type chantype;
1903
1904 chantype = nla_get_u32(
1905 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1906
1907 switch (chantype) {
1908 case NL80211_CHAN_NO_HT:
1909 case NL80211_CHAN_HT20:
1910 case NL80211_CHAN_HT40PLUS:
1911 case NL80211_CHAN_HT40MINUS:
1912 cfg80211_chandef_create(chandef, chandef->chan,
1913 chantype);
1914 break;
1915 default:
1916 return -EINVAL;
1917 }
1918 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1919 chandef->width =
1920 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1921 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1922 chandef->center_freq1 =
1923 nla_get_u32(
1924 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1925 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1926 chandef->center_freq2 =
1927 nla_get_u32(
1928 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1929 }
1930
1931 if (!cfg80211_chandef_valid(chandef))
1932 return -EINVAL;
1933
1934 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1935 IEEE80211_CHAN_DISABLED))
1936 return -EINVAL;
1937
1938 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1939 chandef->width == NL80211_CHAN_WIDTH_10) &&
1940 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1941 return -EINVAL;
1942
1943 return 0;
1944 }
1945
1946 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1947 struct net_device *dev,
1948 struct genl_info *info)
1949 {
1950 struct cfg80211_chan_def chandef;
1951 int result;
1952 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1953 struct wireless_dev *wdev = NULL;
1954
1955 if (dev)
1956 wdev = dev->ieee80211_ptr;
1957 if (!nl80211_can_set_dev_channel(wdev))
1958 return -EOPNOTSUPP;
1959 if (wdev)
1960 iftype = wdev->iftype;
1961
1962 result = nl80211_parse_chandef(rdev, info, &chandef);
1963 if (result)
1964 return result;
1965
1966 switch (iftype) {
1967 case NL80211_IFTYPE_AP:
1968 case NL80211_IFTYPE_P2P_GO:
1969 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1970 result = -EINVAL;
1971 break;
1972 }
1973 if (wdev->beacon_interval) {
1974 if (!dev || !rdev->ops->set_ap_chanwidth ||
1975 !(rdev->wiphy.features &
1976 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1977 result = -EBUSY;
1978 break;
1979 }
1980
1981 /* Only allow dynamic channel width changes */
1982 if (chandef.chan != wdev->preset_chandef.chan) {
1983 result = -EBUSY;
1984 break;
1985 }
1986 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
1987 if (result)
1988 break;
1989 }
1990 wdev->preset_chandef = chandef;
1991 result = 0;
1992 break;
1993 case NL80211_IFTYPE_MESH_POINT:
1994 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1995 break;
1996 case NL80211_IFTYPE_MONITOR:
1997 result = cfg80211_set_monitor_channel(rdev, &chandef);
1998 break;
1999 default:
2000 result = -EINVAL;
2001 }
2002
2003 return result;
2004 }
2005
2006 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2007 {
2008 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2009 struct net_device *netdev = info->user_ptr[1];
2010
2011 return __nl80211_set_channel(rdev, netdev, info);
2012 }
2013
2014 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2015 {
2016 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2017 struct net_device *dev = info->user_ptr[1];
2018 struct wireless_dev *wdev = dev->ieee80211_ptr;
2019 const u8 *bssid;
2020
2021 if (!info->attrs[NL80211_ATTR_MAC])
2022 return -EINVAL;
2023
2024 if (netif_running(dev))
2025 return -EBUSY;
2026
2027 if (!rdev->ops->set_wds_peer)
2028 return -EOPNOTSUPP;
2029
2030 if (wdev->iftype != NL80211_IFTYPE_WDS)
2031 return -EOPNOTSUPP;
2032
2033 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2034 return rdev_set_wds_peer(rdev, dev, bssid);
2035 }
2036
2037
2038 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2039 {
2040 struct cfg80211_registered_device *rdev;
2041 struct net_device *netdev = NULL;
2042 struct wireless_dev *wdev;
2043 int result = 0, rem_txq_params = 0;
2044 struct nlattr *nl_txq_params;
2045 u32 changed;
2046 u8 retry_short = 0, retry_long = 0;
2047 u32 frag_threshold = 0, rts_threshold = 0;
2048 u8 coverage_class = 0;
2049
2050 ASSERT_RTNL();
2051
2052 /*
2053 * Try to find the wiphy and netdev. Normally this
2054 * function shouldn't need the netdev, but this is
2055 * done for backward compatibility -- previously
2056 * setting the channel was done per wiphy, but now
2057 * it is per netdev. Previous userland like hostapd
2058 * also passed a netdev to set_wiphy, so that it is
2059 * possible to let that go to the right netdev!
2060 */
2061
2062 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2063 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2064
2065 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2066 if (netdev && netdev->ieee80211_ptr)
2067 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2068 else
2069 netdev = NULL;
2070 }
2071
2072 if (!netdev) {
2073 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2074 info->attrs);
2075 if (IS_ERR(rdev))
2076 return PTR_ERR(rdev);
2077 wdev = NULL;
2078 netdev = NULL;
2079 result = 0;
2080 } else
2081 wdev = netdev->ieee80211_ptr;
2082
2083 /*
2084 * end workaround code, by now the rdev is available
2085 * and locked, and wdev may or may not be NULL.
2086 */
2087
2088 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2089 result = cfg80211_dev_rename(
2090 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2091
2092 if (result)
2093 return result;
2094
2095 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2096 struct ieee80211_txq_params txq_params;
2097 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2098
2099 if (!rdev->ops->set_txq_params)
2100 return -EOPNOTSUPP;
2101
2102 if (!netdev)
2103 return -EINVAL;
2104
2105 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2106 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2107 return -EINVAL;
2108
2109 if (!netif_running(netdev))
2110 return -ENETDOWN;
2111
2112 nla_for_each_nested(nl_txq_params,
2113 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2114 rem_txq_params) {
2115 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2116 nla_data(nl_txq_params),
2117 nla_len(nl_txq_params),
2118 txq_params_policy);
2119 if (result)
2120 return result;
2121 result = parse_txq_params(tb, &txq_params);
2122 if (result)
2123 return result;
2124
2125 result = rdev_set_txq_params(rdev, netdev,
2126 &txq_params);
2127 if (result)
2128 return result;
2129 }
2130 }
2131
2132 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2133 result = __nl80211_set_channel(
2134 rdev,
2135 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2136 info);
2137 if (result)
2138 return result;
2139 }
2140
2141 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2142 struct wireless_dev *txp_wdev = wdev;
2143 enum nl80211_tx_power_setting type;
2144 int idx, mbm = 0;
2145
2146 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2147 txp_wdev = NULL;
2148
2149 if (!rdev->ops->set_tx_power)
2150 return -EOPNOTSUPP;
2151
2152 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2153 type = nla_get_u32(info->attrs[idx]);
2154
2155 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2156 (type != NL80211_TX_POWER_AUTOMATIC))
2157 return -EINVAL;
2158
2159 if (type != NL80211_TX_POWER_AUTOMATIC) {
2160 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2161 mbm = nla_get_u32(info->attrs[idx]);
2162 }
2163
2164 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2165 if (result)
2166 return result;
2167 }
2168
2169 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2170 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2171 u32 tx_ant, rx_ant;
2172 if ((!rdev->wiphy.available_antennas_tx &&
2173 !rdev->wiphy.available_antennas_rx) ||
2174 !rdev->ops->set_antenna)
2175 return -EOPNOTSUPP;
2176
2177 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2178 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2179
2180 /* reject antenna configurations which don't match the
2181 * available antenna masks, except for the "all" mask */
2182 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2183 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2184 return -EINVAL;
2185
2186 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2187 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2188
2189 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2190 if (result)
2191 return result;
2192 }
2193
2194 changed = 0;
2195
2196 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2197 retry_short = nla_get_u8(
2198 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2199 if (retry_short == 0)
2200 return -EINVAL;
2201
2202 changed |= WIPHY_PARAM_RETRY_SHORT;
2203 }
2204
2205 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2206 retry_long = nla_get_u8(
2207 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2208 if (retry_long == 0)
2209 return -EINVAL;
2210
2211 changed |= WIPHY_PARAM_RETRY_LONG;
2212 }
2213
2214 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2215 frag_threshold = nla_get_u32(
2216 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2217 if (frag_threshold < 256)
2218 return -EINVAL;
2219
2220 if (frag_threshold != (u32) -1) {
2221 /*
2222 * Fragments (apart from the last one) are required to
2223 * have even length. Make the fragmentation code
2224 * simpler by stripping LSB should someone try to use
2225 * odd threshold value.
2226 */
2227 frag_threshold &= ~0x1;
2228 }
2229 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2230 }
2231
2232 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2233 rts_threshold = nla_get_u32(
2234 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2235 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2236 }
2237
2238 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2239 coverage_class = nla_get_u8(
2240 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2241 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2242 }
2243
2244 if (changed) {
2245 u8 old_retry_short, old_retry_long;
2246 u32 old_frag_threshold, old_rts_threshold;
2247 u8 old_coverage_class;
2248
2249 if (!rdev->ops->set_wiphy_params)
2250 return -EOPNOTSUPP;
2251
2252 old_retry_short = rdev->wiphy.retry_short;
2253 old_retry_long = rdev->wiphy.retry_long;
2254 old_frag_threshold = rdev->wiphy.frag_threshold;
2255 old_rts_threshold = rdev->wiphy.rts_threshold;
2256 old_coverage_class = rdev->wiphy.coverage_class;
2257
2258 if (changed & WIPHY_PARAM_RETRY_SHORT)
2259 rdev->wiphy.retry_short = retry_short;
2260 if (changed & WIPHY_PARAM_RETRY_LONG)
2261 rdev->wiphy.retry_long = retry_long;
2262 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2263 rdev->wiphy.frag_threshold = frag_threshold;
2264 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2265 rdev->wiphy.rts_threshold = rts_threshold;
2266 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2267 rdev->wiphy.coverage_class = coverage_class;
2268
2269 result = rdev_set_wiphy_params(rdev, changed);
2270 if (result) {
2271 rdev->wiphy.retry_short = old_retry_short;
2272 rdev->wiphy.retry_long = old_retry_long;
2273 rdev->wiphy.frag_threshold = old_frag_threshold;
2274 rdev->wiphy.rts_threshold = old_rts_threshold;
2275 rdev->wiphy.coverage_class = old_coverage_class;
2276 }
2277 }
2278 return 0;
2279 }
2280
2281 static inline u64 wdev_id(struct wireless_dev *wdev)
2282 {
2283 return (u64)wdev->identifier |
2284 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2285 }
2286
2287 static int nl80211_send_chandef(struct sk_buff *msg,
2288 const struct cfg80211_chan_def *chandef)
2289 {
2290 WARN_ON(!cfg80211_chandef_valid(chandef));
2291
2292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2293 chandef->chan->center_freq))
2294 return -ENOBUFS;
2295 switch (chandef->width) {
2296 case NL80211_CHAN_WIDTH_20_NOHT:
2297 case NL80211_CHAN_WIDTH_20:
2298 case NL80211_CHAN_WIDTH_40:
2299 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2300 cfg80211_get_chandef_type(chandef)))
2301 return -ENOBUFS;
2302 break;
2303 default:
2304 break;
2305 }
2306 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2307 return -ENOBUFS;
2308 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2309 return -ENOBUFS;
2310 if (chandef->center_freq2 &&
2311 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2312 return -ENOBUFS;
2313 return 0;
2314 }
2315
2316 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2317 struct cfg80211_registered_device *rdev,
2318 struct wireless_dev *wdev)
2319 {
2320 struct net_device *dev = wdev->netdev;
2321 void *hdr;
2322
2323 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2324 if (!hdr)
2325 return -1;
2326
2327 if (dev &&
2328 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2329 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2330 goto nla_put_failure;
2331
2332 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2333 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2334 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2335 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2336 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2337 rdev->devlist_generation ^
2338 (cfg80211_rdev_list_generation << 2)))
2339 goto nla_put_failure;
2340
2341 if (rdev->ops->get_channel) {
2342 int ret;
2343 struct cfg80211_chan_def chandef;
2344
2345 ret = rdev_get_channel(rdev, wdev, &chandef);
2346 if (ret == 0) {
2347 if (nl80211_send_chandef(msg, &chandef))
2348 goto nla_put_failure;
2349 }
2350 }
2351
2352 if (wdev->ssid_len) {
2353 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2354 goto nla_put_failure;
2355 }
2356
2357 return genlmsg_end(msg, hdr);
2358
2359 nla_put_failure:
2360 genlmsg_cancel(msg, hdr);
2361 return -EMSGSIZE;
2362 }
2363
2364 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2365 {
2366 int wp_idx = 0;
2367 int if_idx = 0;
2368 int wp_start = cb->args[0];
2369 int if_start = cb->args[1];
2370 struct cfg80211_registered_device *rdev;
2371 struct wireless_dev *wdev;
2372
2373 rtnl_lock();
2374 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2375 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2376 continue;
2377 if (wp_idx < wp_start) {
2378 wp_idx++;
2379 continue;
2380 }
2381 if_idx = 0;
2382
2383 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2384 if (if_idx < if_start) {
2385 if_idx++;
2386 continue;
2387 }
2388 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2389 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2390 rdev, wdev) < 0) {
2391 goto out;
2392 }
2393 if_idx++;
2394 }
2395
2396 wp_idx++;
2397 }
2398 out:
2399 rtnl_unlock();
2400
2401 cb->args[0] = wp_idx;
2402 cb->args[1] = if_idx;
2403
2404 return skb->len;
2405 }
2406
2407 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2408 {
2409 struct sk_buff *msg;
2410 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2411 struct wireless_dev *wdev = info->user_ptr[1];
2412
2413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2414 if (!msg)
2415 return -ENOMEM;
2416
2417 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2418 rdev, wdev) < 0) {
2419 nlmsg_free(msg);
2420 return -ENOBUFS;
2421 }
2422
2423 return genlmsg_reply(msg, info);
2424 }
2425
2426 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2427 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2428 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2429 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2430 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2431 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2432 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2433 };
2434
2435 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2436 {
2437 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2438 int flag;
2439
2440 *mntrflags = 0;
2441
2442 if (!nla)
2443 return -EINVAL;
2444
2445 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2446 nla, mntr_flags_policy))
2447 return -EINVAL;
2448
2449 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2450 if (flags[flag])
2451 *mntrflags |= (1<<flag);
2452
2453 return 0;
2454 }
2455
2456 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2457 struct net_device *netdev, u8 use_4addr,
2458 enum nl80211_iftype iftype)
2459 {
2460 if (!use_4addr) {
2461 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2462 return -EBUSY;
2463 return 0;
2464 }
2465
2466 switch (iftype) {
2467 case NL80211_IFTYPE_AP_VLAN:
2468 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2469 return 0;
2470 break;
2471 case NL80211_IFTYPE_STATION:
2472 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2473 return 0;
2474 break;
2475 default:
2476 break;
2477 }
2478
2479 return -EOPNOTSUPP;
2480 }
2481
2482 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2483 {
2484 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2485 struct vif_params params;
2486 int err;
2487 enum nl80211_iftype otype, ntype;
2488 struct net_device *dev = info->user_ptr[1];
2489 u32 _flags, *flags = NULL;
2490 bool change = false;
2491
2492 memset(&params, 0, sizeof(params));
2493
2494 otype = ntype = dev->ieee80211_ptr->iftype;
2495
2496 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2497 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2498 if (otype != ntype)
2499 change = true;
2500 if (ntype > NL80211_IFTYPE_MAX)
2501 return -EINVAL;
2502 }
2503
2504 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2505 struct wireless_dev *wdev = dev->ieee80211_ptr;
2506
2507 if (ntype != NL80211_IFTYPE_MESH_POINT)
2508 return -EINVAL;
2509 if (netif_running(dev))
2510 return -EBUSY;
2511
2512 wdev_lock(wdev);
2513 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2514 IEEE80211_MAX_MESH_ID_LEN);
2515 wdev->mesh_id_up_len =
2516 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2517 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2518 wdev->mesh_id_up_len);
2519 wdev_unlock(wdev);
2520 }
2521
2522 if (info->attrs[NL80211_ATTR_4ADDR]) {
2523 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2524 change = true;
2525 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2526 if (err)
2527 return err;
2528 } else {
2529 params.use_4addr = -1;
2530 }
2531
2532 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2533 if (ntype != NL80211_IFTYPE_MONITOR)
2534 return -EINVAL;
2535 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2536 &_flags);
2537 if (err)
2538 return err;
2539
2540 flags = &_flags;
2541 change = true;
2542 }
2543
2544 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2545 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2546 return -EOPNOTSUPP;
2547
2548 if (change)
2549 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2550 else
2551 err = 0;
2552
2553 if (!err && params.use_4addr != -1)
2554 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2555
2556 return err;
2557 }
2558
2559 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2560 {
2561 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2562 struct vif_params params;
2563 struct wireless_dev *wdev;
2564 struct sk_buff *msg;
2565 int err;
2566 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2567 u32 flags;
2568
2569 /* to avoid failing a new interface creation due to pending removal */
2570 cfg80211_destroy_ifaces(rdev);
2571
2572 memset(&params, 0, sizeof(params));
2573
2574 if (!info->attrs[NL80211_ATTR_IFNAME])
2575 return -EINVAL;
2576
2577 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2578 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2579 if (type > NL80211_IFTYPE_MAX)
2580 return -EINVAL;
2581 }
2582
2583 if (!rdev->ops->add_virtual_intf ||
2584 !(rdev->wiphy.interface_modes & (1 << type)))
2585 return -EOPNOTSUPP;
2586
2587 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2588 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2589 ETH_ALEN);
2590 if (!is_valid_ether_addr(params.macaddr))
2591 return -EADDRNOTAVAIL;
2592 }
2593
2594 if (info->attrs[NL80211_ATTR_4ADDR]) {
2595 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2596 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2597 if (err)
2598 return err;
2599 }
2600
2601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2602 if (!msg)
2603 return -ENOMEM;
2604
2605 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2606 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2607 &flags);
2608
2609 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2610 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2611 return -EOPNOTSUPP;
2612
2613 wdev = rdev_add_virtual_intf(rdev,
2614 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2615 type, err ? NULL : &flags, &params);
2616 if (IS_ERR(wdev)) {
2617 nlmsg_free(msg);
2618 return PTR_ERR(wdev);
2619 }
2620
2621 if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2622 wdev->owner_nlportid = info->snd_portid;
2623
2624 switch (type) {
2625 case NL80211_IFTYPE_MESH_POINT:
2626 if (!info->attrs[NL80211_ATTR_MESH_ID])
2627 break;
2628 wdev_lock(wdev);
2629 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2630 IEEE80211_MAX_MESH_ID_LEN);
2631 wdev->mesh_id_up_len =
2632 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2633 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2634 wdev->mesh_id_up_len);
2635 wdev_unlock(wdev);
2636 break;
2637 case NL80211_IFTYPE_P2P_DEVICE:
2638 /*
2639 * P2P Device doesn't have a netdev, so doesn't go
2640 * through the netdev notifier and must be added here
2641 */
2642 mutex_init(&wdev->mtx);
2643 INIT_LIST_HEAD(&wdev->event_list);
2644 spin_lock_init(&wdev->event_lock);
2645 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2646 spin_lock_init(&wdev->mgmt_registrations_lock);
2647
2648 wdev->identifier = ++rdev->wdev_id;
2649 list_add_rcu(&wdev->list, &rdev->wdev_list);
2650 rdev->devlist_generation++;
2651 break;
2652 default:
2653 break;
2654 }
2655
2656 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2657 rdev, wdev) < 0) {
2658 nlmsg_free(msg);
2659 return -ENOBUFS;
2660 }
2661
2662 return genlmsg_reply(msg, info);
2663 }
2664
2665 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2666 {
2667 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2668 struct wireless_dev *wdev = info->user_ptr[1];
2669
2670 if (!rdev->ops->del_virtual_intf)
2671 return -EOPNOTSUPP;
2672
2673 /*
2674 * If we remove a wireless device without a netdev then clear
2675 * user_ptr[1] so that nl80211_post_doit won't dereference it
2676 * to check if it needs to do dev_put(). Otherwise it crashes
2677 * since the wdev has been freed, unlike with a netdev where
2678 * we need the dev_put() for the netdev to really be freed.
2679 */
2680 if (!wdev->netdev)
2681 info->user_ptr[1] = NULL;
2682
2683 return rdev_del_virtual_intf(rdev, wdev);
2684 }
2685
2686 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2687 {
2688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2689 struct net_device *dev = info->user_ptr[1];
2690 u16 noack_map;
2691
2692 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2693 return -EINVAL;
2694
2695 if (!rdev->ops->set_noack_map)
2696 return -EOPNOTSUPP;
2697
2698 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2699
2700 return rdev_set_noack_map(rdev, dev, noack_map);
2701 }
2702
2703 struct get_key_cookie {
2704 struct sk_buff *msg;
2705 int error;
2706 int idx;
2707 };
2708
2709 static void get_key_callback(void *c, struct key_params *params)
2710 {
2711 struct nlattr *key;
2712 struct get_key_cookie *cookie = c;
2713
2714 if ((params->key &&
2715 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2716 params->key_len, params->key)) ||
2717 (params->seq &&
2718 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2719 params->seq_len, params->seq)) ||
2720 (params->cipher &&
2721 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2722 params->cipher)))
2723 goto nla_put_failure;
2724
2725 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2726 if (!key)
2727 goto nla_put_failure;
2728
2729 if ((params->key &&
2730 nla_put(cookie->msg, NL80211_KEY_DATA,
2731 params->key_len, params->key)) ||
2732 (params->seq &&
2733 nla_put(cookie->msg, NL80211_KEY_SEQ,
2734 params->seq_len, params->seq)) ||
2735 (params->cipher &&
2736 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2737 params->cipher)))
2738 goto nla_put_failure;
2739
2740 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2741 goto nla_put_failure;
2742
2743 nla_nest_end(cookie->msg, key);
2744
2745 return;
2746 nla_put_failure:
2747 cookie->error = 1;
2748 }
2749
2750 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2751 {
2752 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2753 int err;
2754 struct net_device *dev = info->user_ptr[1];
2755 u8 key_idx = 0;
2756 const u8 *mac_addr = NULL;
2757 bool pairwise;
2758 struct get_key_cookie cookie = {
2759 .error = 0,
2760 };
2761 void *hdr;
2762 struct sk_buff *msg;
2763
2764 if (info->attrs[NL80211_ATTR_KEY_IDX])
2765 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2766
2767 if (key_idx > 5)
2768 return -EINVAL;
2769
2770 if (info->attrs[NL80211_ATTR_MAC])
2771 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2772
2773 pairwise = !!mac_addr;
2774 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2775 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2776 if (kt >= NUM_NL80211_KEYTYPES)
2777 return -EINVAL;
2778 if (kt != NL80211_KEYTYPE_GROUP &&
2779 kt != NL80211_KEYTYPE_PAIRWISE)
2780 return -EINVAL;
2781 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2782 }
2783
2784 if (!rdev->ops->get_key)
2785 return -EOPNOTSUPP;
2786
2787 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2788 if (!msg)
2789 return -ENOMEM;
2790
2791 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2792 NL80211_CMD_NEW_KEY);
2793 if (!hdr)
2794 goto nla_put_failure;
2795
2796 cookie.msg = msg;
2797 cookie.idx = key_idx;
2798
2799 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2800 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2801 goto nla_put_failure;
2802 if (mac_addr &&
2803 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2804 goto nla_put_failure;
2805
2806 if (pairwise && mac_addr &&
2807 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2808 return -ENOENT;
2809
2810 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2811 get_key_callback);
2812
2813 if (err)
2814 goto free_msg;
2815
2816 if (cookie.error)
2817 goto nla_put_failure;
2818
2819 genlmsg_end(msg, hdr);
2820 return genlmsg_reply(msg, info);
2821
2822 nla_put_failure:
2823 err = -ENOBUFS;
2824 free_msg:
2825 nlmsg_free(msg);
2826 return err;
2827 }
2828
2829 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2830 {
2831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2832 struct key_parse key;
2833 int err;
2834 struct net_device *dev = info->user_ptr[1];
2835
2836 err = nl80211_parse_key(info, &key);
2837 if (err)
2838 return err;
2839
2840 if (key.idx < 0)
2841 return -EINVAL;
2842
2843 /* only support setting default key */
2844 if (!key.def && !key.defmgmt)
2845 return -EINVAL;
2846
2847 wdev_lock(dev->ieee80211_ptr);
2848
2849 if (key.def) {
2850 if (!rdev->ops->set_default_key) {
2851 err = -EOPNOTSUPP;
2852 goto out;
2853 }
2854
2855 err = nl80211_key_allowed(dev->ieee80211_ptr);
2856 if (err)
2857 goto out;
2858
2859 err = rdev_set_default_key(rdev, dev, key.idx,
2860 key.def_uni, key.def_multi);
2861
2862 if (err)
2863 goto out;
2864
2865 #ifdef CONFIG_CFG80211_WEXT
2866 dev->ieee80211_ptr->wext.default_key = key.idx;
2867 #endif
2868 } else {
2869 if (key.def_uni || !key.def_multi) {
2870 err = -EINVAL;
2871 goto out;
2872 }
2873
2874 if (!rdev->ops->set_default_mgmt_key) {
2875 err = -EOPNOTSUPP;
2876 goto out;
2877 }
2878
2879 err = nl80211_key_allowed(dev->ieee80211_ptr);
2880 if (err)
2881 goto out;
2882
2883 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2884 if (err)
2885 goto out;
2886
2887 #ifdef CONFIG_CFG80211_WEXT
2888 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2889 #endif
2890 }
2891
2892 out:
2893 wdev_unlock(dev->ieee80211_ptr);
2894
2895 return err;
2896 }
2897
2898 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2899 {
2900 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2901 int err;
2902 struct net_device *dev = info->user_ptr[1];
2903 struct key_parse key;
2904 const u8 *mac_addr = NULL;
2905
2906 err = nl80211_parse_key(info, &key);
2907 if (err)
2908 return err;
2909
2910 if (!key.p.key)
2911 return -EINVAL;
2912
2913 if (info->attrs[NL80211_ATTR_MAC])
2914 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2915
2916 if (key.type == -1) {
2917 if (mac_addr)
2918 key.type = NL80211_KEYTYPE_PAIRWISE;
2919 else
2920 key.type = NL80211_KEYTYPE_GROUP;
2921 }
2922
2923 /* for now */
2924 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2925 key.type != NL80211_KEYTYPE_GROUP)
2926 return -EINVAL;
2927
2928 if (!rdev->ops->add_key)
2929 return -EOPNOTSUPP;
2930
2931 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2932 key.type == NL80211_KEYTYPE_PAIRWISE,
2933 mac_addr))
2934 return -EINVAL;
2935
2936 wdev_lock(dev->ieee80211_ptr);
2937 err = nl80211_key_allowed(dev->ieee80211_ptr);
2938 if (!err)
2939 err = rdev_add_key(rdev, dev, key.idx,
2940 key.type == NL80211_KEYTYPE_PAIRWISE,
2941 mac_addr, &key.p);
2942 wdev_unlock(dev->ieee80211_ptr);
2943
2944 return err;
2945 }
2946
2947 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2948 {
2949 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2950 int err;
2951 struct net_device *dev = info->user_ptr[1];
2952 u8 *mac_addr = NULL;
2953 struct key_parse key;
2954
2955 err = nl80211_parse_key(info, &key);
2956 if (err)
2957 return err;
2958
2959 if (info->attrs[NL80211_ATTR_MAC])
2960 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2961
2962 if (key.type == -1) {
2963 if (mac_addr)
2964 key.type = NL80211_KEYTYPE_PAIRWISE;
2965 else
2966 key.type = NL80211_KEYTYPE_GROUP;
2967 }
2968
2969 /* for now */
2970 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2971 key.type != NL80211_KEYTYPE_GROUP)
2972 return -EINVAL;
2973
2974 if (!rdev->ops->del_key)
2975 return -EOPNOTSUPP;
2976
2977 wdev_lock(dev->ieee80211_ptr);
2978 err = nl80211_key_allowed(dev->ieee80211_ptr);
2979
2980 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2981 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2982 err = -ENOENT;
2983
2984 if (!err)
2985 err = rdev_del_key(rdev, dev, key.idx,
2986 key.type == NL80211_KEYTYPE_PAIRWISE,
2987 mac_addr);
2988
2989 #ifdef CONFIG_CFG80211_WEXT
2990 if (!err) {
2991 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2992 dev->ieee80211_ptr->wext.default_key = -1;
2993 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2994 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2995 }
2996 #endif
2997 wdev_unlock(dev->ieee80211_ptr);
2998
2999 return err;
3000 }
3001
3002 /* This function returns an error or the number of nested attributes */
3003 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3004 {
3005 struct nlattr *attr;
3006 int n_entries = 0, tmp;
3007
3008 nla_for_each_nested(attr, nl_attr, tmp) {
3009 if (nla_len(attr) != ETH_ALEN)
3010 return -EINVAL;
3011
3012 n_entries++;
3013 }
3014
3015 return n_entries;
3016 }
3017
3018 /*
3019 * This function parses ACL information and allocates memory for ACL data.
3020 * On successful return, the calling function is responsible to free the
3021 * ACL buffer returned by this function.
3022 */
3023 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3024 struct genl_info *info)
3025 {
3026 enum nl80211_acl_policy acl_policy;
3027 struct nlattr *attr;
3028 struct cfg80211_acl_data *acl;
3029 int i = 0, n_entries, tmp;
3030
3031 if (!wiphy->max_acl_mac_addrs)
3032 return ERR_PTR(-EOPNOTSUPP);
3033
3034 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3035 return ERR_PTR(-EINVAL);
3036
3037 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3038 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3039 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3040 return ERR_PTR(-EINVAL);
3041
3042 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3043 return ERR_PTR(-EINVAL);
3044
3045 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3046 if (n_entries < 0)
3047 return ERR_PTR(n_entries);
3048
3049 if (n_entries > wiphy->max_acl_mac_addrs)
3050 return ERR_PTR(-ENOTSUPP);
3051
3052 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3053 GFP_KERNEL);
3054 if (!acl)
3055 return ERR_PTR(-ENOMEM);
3056
3057 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3058 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3059 i++;
3060 }
3061
3062 acl->n_acl_entries = n_entries;
3063 acl->acl_policy = acl_policy;
3064
3065 return acl;
3066 }
3067
3068 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3069 {
3070 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3071 struct net_device *dev = info->user_ptr[1];
3072 struct cfg80211_acl_data *acl;
3073 int err;
3074
3075 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3076 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3077 return -EOPNOTSUPP;
3078
3079 if (!dev->ieee80211_ptr->beacon_interval)
3080 return -EINVAL;
3081
3082 acl = parse_acl_data(&rdev->wiphy, info);
3083 if (IS_ERR(acl))
3084 return PTR_ERR(acl);
3085
3086 err = rdev_set_mac_acl(rdev, dev, acl);
3087
3088 kfree(acl);
3089
3090 return err;
3091 }
3092
3093 static int nl80211_parse_beacon(struct nlattr *attrs[],
3094 struct cfg80211_beacon_data *bcn)
3095 {
3096 bool haveinfo = false;
3097
3098 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3099 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3100 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3101 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3102 return -EINVAL;
3103
3104 memset(bcn, 0, sizeof(*bcn));
3105
3106 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3107 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3108 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3109 if (!bcn->head_len)
3110 return -EINVAL;
3111 haveinfo = true;
3112 }
3113
3114 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3115 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3116 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3117 haveinfo = true;
3118 }
3119
3120 if (!haveinfo)
3121 return -EINVAL;
3122
3123 if (attrs[NL80211_ATTR_IE]) {
3124 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3125 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3126 }
3127
3128 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3129 bcn->proberesp_ies =
3130 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3131 bcn->proberesp_ies_len =
3132 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3133 }
3134
3135 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3136 bcn->assocresp_ies =
3137 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3138 bcn->assocresp_ies_len =
3139 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3140 }
3141
3142 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3143 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3144 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3145 }
3146
3147 return 0;
3148 }
3149
3150 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3151 struct cfg80211_ap_settings *params)
3152 {
3153 struct wireless_dev *wdev;
3154 bool ret = false;
3155
3156 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3157 if (wdev->iftype != NL80211_IFTYPE_AP &&
3158 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3159 continue;
3160
3161 if (!wdev->preset_chandef.chan)
3162 continue;
3163
3164 params->chandef = wdev->preset_chandef;
3165 ret = true;
3166 break;
3167 }
3168
3169 return ret;
3170 }
3171
3172 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3173 enum nl80211_auth_type auth_type,
3174 enum nl80211_commands cmd)
3175 {
3176 if (auth_type > NL80211_AUTHTYPE_MAX)
3177 return false;
3178
3179 switch (cmd) {
3180 case NL80211_CMD_AUTHENTICATE:
3181 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3182 auth_type == NL80211_AUTHTYPE_SAE)
3183 return false;
3184 return true;
3185 case NL80211_CMD_CONNECT:
3186 case NL80211_CMD_START_AP:
3187 /* SAE not supported yet */
3188 if (auth_type == NL80211_AUTHTYPE_SAE)
3189 return false;
3190 return true;
3191 default:
3192 return false;
3193 }
3194 }
3195
3196 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3197 {
3198 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3199 struct net_device *dev = info->user_ptr[1];
3200 struct wireless_dev *wdev = dev->ieee80211_ptr;
3201 struct cfg80211_ap_settings params;
3202 int err;
3203
3204 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3205 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3206 return -EOPNOTSUPP;
3207
3208 if (!rdev->ops->start_ap)
3209 return -EOPNOTSUPP;
3210
3211 if (wdev->beacon_interval)
3212 return -EALREADY;
3213
3214 memset(&params, 0, sizeof(params));
3215
3216 /* these are required for START_AP */
3217 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3218 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3219 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3220 return -EINVAL;
3221
3222 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3223 if (err)
3224 return err;
3225
3226 params.beacon_interval =
3227 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3228 params.dtim_period =
3229 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3230
3231 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3232 if (err)
3233 return err;
3234
3235 /*
3236 * In theory, some of these attributes should be required here
3237 * but since they were not used when the command was originally
3238 * added, keep them optional for old user space programs to let
3239 * them continue to work with drivers that do not need the
3240 * additional information -- drivers must check!
3241 */
3242 if (info->attrs[NL80211_ATTR_SSID]) {
3243 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3244 params.ssid_len =
3245 nla_len(info->attrs[NL80211_ATTR_SSID]);
3246 if (params.ssid_len == 0 ||
3247 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3248 return -EINVAL;
3249 }
3250
3251 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3252 params.hidden_ssid = nla_get_u32(
3253 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3254 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3255 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3256 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3257 return -EINVAL;
3258 }
3259
3260 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3261
3262 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3263 params.auth_type = nla_get_u32(
3264 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3265 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3266 NL80211_CMD_START_AP))
3267 return -EINVAL;
3268 } else
3269 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3270
3271 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3272 NL80211_MAX_NR_CIPHER_SUITES);
3273 if (err)
3274 return err;
3275
3276 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3277 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3278 return -EOPNOTSUPP;
3279 params.inactivity_timeout = nla_get_u16(
3280 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3281 }
3282
3283 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3284 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3285 return -EINVAL;
3286 params.p2p_ctwindow =
3287 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3288 if (params.p2p_ctwindow > 127)
3289 return -EINVAL;
3290 if (params.p2p_ctwindow != 0 &&
3291 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3292 return -EINVAL;
3293 }
3294
3295 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3296 u8 tmp;
3297
3298 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3299 return -EINVAL;
3300 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3301 if (tmp > 1)
3302 return -EINVAL;
3303 params.p2p_opp_ps = tmp;
3304 if (params.p2p_opp_ps != 0 &&
3305 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3306 return -EINVAL;
3307 }
3308
3309 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3310 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3311 if (err)
3312 return err;
3313 } else if (wdev->preset_chandef.chan) {
3314 params.chandef = wdev->preset_chandef;
3315 } else if (!nl80211_get_ap_channel(rdev, &params))
3316 return -EINVAL;
3317
3318 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3319 wdev->iftype))
3320 return -EINVAL;
3321
3322 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3323 params.acl = parse_acl_data(&rdev->wiphy, info);
3324 if (IS_ERR(params.acl))
3325 return PTR_ERR(params.acl);
3326 }
3327
3328 wdev_lock(wdev);
3329 err = rdev_start_ap(rdev, dev, &params);
3330 if (!err) {
3331 wdev->preset_chandef = params.chandef;
3332 wdev->beacon_interval = params.beacon_interval;
3333 wdev->chandef = params.chandef;
3334 wdev->ssid_len = params.ssid_len;
3335 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3336 }
3337 wdev_unlock(wdev);
3338
3339 kfree(params.acl);
3340
3341 return err;
3342 }
3343
3344 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3345 {
3346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3347 struct net_device *dev = info->user_ptr[1];
3348 struct wireless_dev *wdev = dev->ieee80211_ptr;
3349 struct cfg80211_beacon_data params;
3350 int err;
3351
3352 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3353 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3354 return -EOPNOTSUPP;
3355
3356 if (!rdev->ops->change_beacon)
3357 return -EOPNOTSUPP;
3358
3359 if (!wdev->beacon_interval)
3360 return -EINVAL;
3361
3362 err = nl80211_parse_beacon(info->attrs, &params);
3363 if (err)
3364 return err;
3365
3366 wdev_lock(wdev);
3367 err = rdev_change_beacon(rdev, dev, &params);
3368 wdev_unlock(wdev);
3369
3370 return err;
3371 }
3372
3373 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3374 {
3375 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3376 struct net_device *dev = info->user_ptr[1];
3377
3378 return cfg80211_stop_ap(rdev, dev, false);
3379 }
3380
3381 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3382 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3383 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3384 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3385 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3386 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3387 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3388 };
3389
3390 static int parse_station_flags(struct genl_info *info,
3391 enum nl80211_iftype iftype,
3392 struct station_parameters *params)
3393 {
3394 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3395 struct nlattr *nla;
3396 int flag;
3397
3398 /*
3399 * Try parsing the new attribute first so userspace
3400 * can specify both for older kernels.
3401 */
3402 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3403 if (nla) {
3404 struct nl80211_sta_flag_update *sta_flags;
3405
3406 sta_flags = nla_data(nla);
3407 params->sta_flags_mask = sta_flags->mask;
3408 params->sta_flags_set = sta_flags->set;
3409 params->sta_flags_set &= params->sta_flags_mask;
3410 if ((params->sta_flags_mask |
3411 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3412 return -EINVAL;
3413 return 0;
3414 }
3415
3416 /* if present, parse the old attribute */
3417
3418 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3419 if (!nla)
3420 return 0;
3421
3422 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3423 nla, sta_flags_policy))
3424 return -EINVAL;
3425
3426 /*
3427 * Only allow certain flags for interface types so that
3428 * other attributes are silently ignored. Remember that
3429 * this is backward compatibility code with old userspace
3430 * and shouldn't be hit in other cases anyway.
3431 */
3432 switch (iftype) {
3433 case NL80211_IFTYPE_AP:
3434 case NL80211_IFTYPE_AP_VLAN:
3435 case NL80211_IFTYPE_P2P_GO:
3436 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3437 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3438 BIT(NL80211_STA_FLAG_WME) |
3439 BIT(NL80211_STA_FLAG_MFP);
3440 break;
3441 case NL80211_IFTYPE_P2P_CLIENT:
3442 case NL80211_IFTYPE_STATION:
3443 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3444 BIT(NL80211_STA_FLAG_TDLS_PEER);
3445 break;
3446 case NL80211_IFTYPE_MESH_POINT:
3447 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3448 BIT(NL80211_STA_FLAG_MFP) |
3449 BIT(NL80211_STA_FLAG_AUTHORIZED);
3450 default:
3451 return -EINVAL;
3452 }
3453
3454 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3455 if (flags[flag]) {
3456 params->sta_flags_set |= (1<<flag);
3457
3458 /* no longer support new API additions in old API */
3459 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3460 return -EINVAL;
3461 }
3462 }
3463
3464 return 0;
3465 }
3466
3467 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3468 int attr)
3469 {
3470 struct nlattr *rate;
3471 u32 bitrate;
3472 u16 bitrate_compat;
3473
3474 rate = nla_nest_start(msg, attr);
3475 if (!rate)
3476 return false;
3477
3478 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3479 bitrate = cfg80211_calculate_bitrate(info);
3480 /* report 16-bit bitrate only if we can */
3481 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3482 if (bitrate > 0 &&
3483 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3484 return false;
3485 if (bitrate_compat > 0 &&
3486 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3487 return false;
3488
3489 if (info->flags & RATE_INFO_FLAGS_MCS) {
3490 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3491 return false;
3492 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3493 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3494 return false;
3495 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3496 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3497 return false;
3498 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3499 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3500 return false;
3501 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3502 return false;
3503 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3504 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3505 return false;
3506 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3507 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3508 return false;
3509 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3510 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3511 return false;
3512 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3513 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3514 return false;
3515 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3516 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3517 return false;
3518 }
3519
3520 nla_nest_end(msg, rate);
3521 return true;
3522 }
3523
3524 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3525 int id)
3526 {
3527 void *attr;
3528 int i = 0;
3529
3530 if (!mask)
3531 return true;
3532
3533 attr = nla_nest_start(msg, id);
3534 if (!attr)
3535 return false;
3536
3537 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3538 if (!(mask & BIT(i)))
3539 continue;
3540
3541 if (nla_put_u8(msg, i, signal[i]))
3542 return false;
3543 }
3544
3545 nla_nest_end(msg, attr);
3546
3547 return true;
3548 }
3549
3550 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3551 int flags,
3552 struct cfg80211_registered_device *rdev,
3553 struct net_device *dev,
3554 const u8 *mac_addr, struct station_info *sinfo)
3555 {
3556 void *hdr;
3557 struct nlattr *sinfoattr, *bss_param;
3558
3559 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3560 if (!hdr)
3561 return -1;
3562
3563 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3564 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3565 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3566 goto nla_put_failure;
3567
3568 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3569 if (!sinfoattr)
3570 goto nla_put_failure;
3571 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3572 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3573 sinfo->connected_time))
3574 goto nla_put_failure;
3575 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3576 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3577 sinfo->inactive_time))
3578 goto nla_put_failure;
3579 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3580 STATION_INFO_RX_BYTES64)) &&
3581 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3582 (u32)sinfo->rx_bytes))
3583 goto nla_put_failure;
3584 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3585 STATION_INFO_TX_BYTES64)) &&
3586 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3587 (u32)sinfo->tx_bytes))
3588 goto nla_put_failure;
3589 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3590 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3591 sinfo->rx_bytes))
3592 goto nla_put_failure;
3593 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3594 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3595 sinfo->tx_bytes))
3596 goto nla_put_failure;
3597 if ((sinfo->filled & STATION_INFO_LLID) &&
3598 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3599 goto nla_put_failure;
3600 if ((sinfo->filled & STATION_INFO_PLID) &&
3601 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3602 goto nla_put_failure;
3603 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3604 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3605 sinfo->plink_state))
3606 goto nla_put_failure;
3607 switch (rdev->wiphy.signal_type) {
3608 case CFG80211_SIGNAL_TYPE_MBM:
3609 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3610 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3611 sinfo->signal))
3612 goto nla_put_failure;
3613 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3614 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3615 sinfo->signal_avg))
3616 goto nla_put_failure;
3617 break;
3618 default:
3619 break;
3620 }
3621 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3622 if (!nl80211_put_signal(msg, sinfo->chains,
3623 sinfo->chain_signal,
3624 NL80211_STA_INFO_CHAIN_SIGNAL))
3625 goto nla_put_failure;
3626 }
3627 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3628 if (!nl80211_put_signal(msg, sinfo->chains,
3629 sinfo->chain_signal_avg,
3630 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3631 goto nla_put_failure;
3632 }
3633 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3634 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3635 NL80211_STA_INFO_TX_BITRATE))
3636 goto nla_put_failure;
3637 }
3638 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3639 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3640 NL80211_STA_INFO_RX_BITRATE))
3641 goto nla_put_failure;
3642 }
3643 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3644 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3645 sinfo->rx_packets))
3646 goto nla_put_failure;
3647 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3648 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3649 sinfo->tx_packets))
3650 goto nla_put_failure;
3651 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3652 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3653 sinfo->tx_retries))
3654 goto nla_put_failure;
3655 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3656 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3657 sinfo->tx_failed))
3658 goto nla_put_failure;
3659 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3660 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3661 sinfo->expected_throughput))
3662 goto nla_put_failure;
3663 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3664 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3665 sinfo->beacon_loss_count))
3666 goto nla_put_failure;
3667 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3668 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3669 sinfo->local_pm))
3670 goto nla_put_failure;
3671 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3672 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3673 sinfo->peer_pm))
3674 goto nla_put_failure;
3675 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3676 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3677 sinfo->nonpeer_pm))
3678 goto nla_put_failure;
3679 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3680 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3681 if (!bss_param)
3682 goto nla_put_failure;
3683
3684 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3685 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3686 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3687 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3688 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3689 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3690 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3691 sinfo->bss_param.dtim_period) ||
3692 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3693 sinfo->bss_param.beacon_interval))
3694 goto nla_put_failure;
3695
3696 nla_nest_end(msg, bss_param);
3697 }
3698 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3699 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3700 sizeof(struct nl80211_sta_flag_update),
3701 &sinfo->sta_flags))
3702 goto nla_put_failure;
3703 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3704 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3705 sinfo->t_offset))
3706 goto nla_put_failure;
3707 nla_nest_end(msg, sinfoattr);
3708
3709 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3710 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3711 sinfo->assoc_req_ies))
3712 goto nla_put_failure;
3713
3714 return genlmsg_end(msg, hdr);
3715
3716 nla_put_failure:
3717 genlmsg_cancel(msg, hdr);
3718 return -EMSGSIZE;
3719 }
3720
3721 static int nl80211_dump_station(struct sk_buff *skb,
3722 struct netlink_callback *cb)
3723 {
3724 struct station_info sinfo;
3725 struct cfg80211_registered_device *rdev;
3726 struct wireless_dev *wdev;
3727 u8 mac_addr[ETH_ALEN];
3728 int sta_idx = cb->args[2];
3729 int err;
3730
3731 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3732 if (err)
3733 return err;
3734
3735 if (!wdev->netdev) {
3736 err = -EINVAL;
3737 goto out_err;
3738 }
3739
3740 if (!rdev->ops->dump_station) {
3741 err = -EOPNOTSUPP;
3742 goto out_err;
3743 }
3744
3745 while (1) {
3746 memset(&sinfo, 0, sizeof(sinfo));
3747 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3748 mac_addr, &sinfo);
3749 if (err == -ENOENT)
3750 break;
3751 if (err)
3752 goto out_err;
3753
3754 if (nl80211_send_station(skb,
3755 NETLINK_CB(cb->skb).portid,
3756 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3757 rdev, wdev->netdev, mac_addr,
3758 &sinfo) < 0)
3759 goto out;
3760
3761 sta_idx++;
3762 }
3763
3764
3765 out:
3766 cb->args[2] = sta_idx;
3767 err = skb->len;
3768 out_err:
3769 nl80211_finish_wdev_dump(rdev);
3770
3771 return err;
3772 }
3773
3774 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3775 {
3776 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3777 struct net_device *dev = info->user_ptr[1];
3778 struct station_info sinfo;
3779 struct sk_buff *msg;
3780 u8 *mac_addr = NULL;
3781 int err;
3782
3783 memset(&sinfo, 0, sizeof(sinfo));
3784
3785 if (!info->attrs[NL80211_ATTR_MAC])
3786 return -EINVAL;
3787
3788 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3789
3790 if (!rdev->ops->get_station)
3791 return -EOPNOTSUPP;
3792
3793 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3794 if (err)
3795 return err;
3796
3797 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3798 if (!msg)
3799 return -ENOMEM;
3800
3801 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3802 rdev, dev, mac_addr, &sinfo) < 0) {
3803 nlmsg_free(msg);
3804 return -ENOBUFS;
3805 }
3806
3807 return genlmsg_reply(msg, info);
3808 }
3809
3810 int cfg80211_check_station_change(struct wiphy *wiphy,
3811 struct station_parameters *params,
3812 enum cfg80211_station_type statype)
3813 {
3814 if (params->listen_interval != -1)
3815 return -EINVAL;
3816 if (params->aid)
3817 return -EINVAL;
3818
3819 /* When you run into this, adjust the code below for the new flag */
3820 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3821
3822 switch (statype) {
3823 case CFG80211_STA_MESH_PEER_KERNEL:
3824 case CFG80211_STA_MESH_PEER_USER:
3825 /*
3826 * No ignoring the TDLS flag here -- the userspace mesh
3827 * code doesn't have the bug of including TDLS in the
3828 * mask everywhere.
3829 */
3830 if (params->sta_flags_mask &
3831 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3832 BIT(NL80211_STA_FLAG_MFP) |
3833 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3834 return -EINVAL;
3835 break;
3836 case CFG80211_STA_TDLS_PEER_SETUP:
3837 case CFG80211_STA_TDLS_PEER_ACTIVE:
3838 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3839 return -EINVAL;
3840 /* ignore since it can't change */
3841 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3842 break;
3843 default:
3844 /* disallow mesh-specific things */
3845 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3846 return -EINVAL;
3847 if (params->local_pm)
3848 return -EINVAL;
3849 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3850 return -EINVAL;
3851 }
3852
3853 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3854 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3855 /* TDLS can't be set, ... */
3856 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3857 return -EINVAL;
3858 /*
3859 * ... but don't bother the driver with it. This works around
3860 * a hostapd/wpa_supplicant issue -- it always includes the
3861 * TLDS_PEER flag in the mask even for AP mode.
3862 */
3863 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3864 }
3865
3866 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3867 /* reject other things that can't change */
3868 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3869 return -EINVAL;
3870 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3871 return -EINVAL;
3872 if (params->supported_rates)
3873 return -EINVAL;
3874 if (params->ext_capab || params->ht_capa || params->vht_capa)
3875 return -EINVAL;
3876 }
3877
3878 if (statype != CFG80211_STA_AP_CLIENT) {
3879 if (params->vlan)
3880 return -EINVAL;
3881 }
3882
3883 switch (statype) {
3884 case CFG80211_STA_AP_MLME_CLIENT:
3885 /* Use this only for authorizing/unauthorizing a station */
3886 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3887 return -EOPNOTSUPP;
3888 break;
3889 case CFG80211_STA_AP_CLIENT:
3890 /* accept only the listed bits */
3891 if (params->sta_flags_mask &
3892 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3893 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3894 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3895 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3896 BIT(NL80211_STA_FLAG_WME) |
3897 BIT(NL80211_STA_FLAG_MFP)))
3898 return -EINVAL;
3899
3900 /* but authenticated/associated only if driver handles it */
3901 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3902 params->sta_flags_mask &
3903 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3904 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3905 return -EINVAL;
3906 break;
3907 case CFG80211_STA_IBSS:
3908 case CFG80211_STA_AP_STA:
3909 /* reject any changes other than AUTHORIZED */
3910 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3911 return -EINVAL;
3912 break;
3913 case CFG80211_STA_TDLS_PEER_SETUP:
3914 /* reject any changes other than AUTHORIZED or WME */
3915 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3916 BIT(NL80211_STA_FLAG_WME)))
3917 return -EINVAL;
3918 /* force (at least) rates when authorizing */
3919 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3920 !params->supported_rates)
3921 return -EINVAL;
3922 break;
3923 case CFG80211_STA_TDLS_PEER_ACTIVE:
3924 /* reject any changes */
3925 return -EINVAL;
3926 case CFG80211_STA_MESH_PEER_KERNEL:
3927 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3928 return -EINVAL;
3929 break;
3930 case CFG80211_STA_MESH_PEER_USER:
3931 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3932 return -EINVAL;
3933 break;
3934 }
3935
3936 return 0;
3937 }
3938 EXPORT_SYMBOL(cfg80211_check_station_change);
3939
3940 /*
3941 * Get vlan interface making sure it is running and on the right wiphy.
3942 */
3943 static struct net_device *get_vlan(struct genl_info *info,
3944 struct cfg80211_registered_device *rdev)
3945 {
3946 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3947 struct net_device *v;
3948 int ret;
3949
3950 if (!vlanattr)
3951 return NULL;
3952
3953 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3954 if (!v)
3955 return ERR_PTR(-ENODEV);
3956
3957 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3958 ret = -EINVAL;
3959 goto error;
3960 }
3961
3962 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3963 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3964 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3965 ret = -EINVAL;
3966 goto error;
3967 }
3968
3969 if (!netif_running(v)) {
3970 ret = -ENETDOWN;
3971 goto error;
3972 }
3973
3974 return v;
3975 error:
3976 dev_put(v);
3977 return ERR_PTR(ret);
3978 }
3979
3980 static const struct nla_policy
3981 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
3982 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3983 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3984 };
3985
3986 static int nl80211_parse_sta_wme(struct genl_info *info,
3987 struct station_parameters *params)
3988 {
3989 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3990 struct nlattr *nla;
3991 int err;
3992
3993 /* parse WME attributes if present */
3994 if (!info->attrs[NL80211_ATTR_STA_WME])
3995 return 0;
3996
3997 nla = info->attrs[NL80211_ATTR_STA_WME];
3998 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3999 nl80211_sta_wme_policy);
4000 if (err)
4001 return err;
4002
4003 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4004 params->uapsd_queues = nla_get_u8(
4005 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4006 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4007 return -EINVAL;
4008
4009 if (tb[NL80211_STA_WME_MAX_SP])
4010 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4011
4012 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4013 return -EINVAL;
4014
4015 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4016
4017 return 0;
4018 }
4019
4020 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4021 struct station_parameters *params)
4022 {
4023 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4024 params->supported_channels =
4025 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4026 params->supported_channels_len =
4027 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4028 /*
4029 * Need to include at least one (first channel, number of
4030 * channels) tuple for each subband, and must have proper
4031 * tuples for the rest of the data as well.
4032 */
4033 if (params->supported_channels_len < 2)
4034 return -EINVAL;
4035 if (params->supported_channels_len % 2)
4036 return -EINVAL;
4037 }
4038
4039 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4040 params->supported_oper_classes =
4041 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4042 params->supported_oper_classes_len =
4043 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4044 /*
4045 * The value of the Length field of the Supported Operating
4046 * Classes element is between 2 and 253.
4047 */
4048 if (params->supported_oper_classes_len < 2 ||
4049 params->supported_oper_classes_len > 253)
4050 return -EINVAL;
4051 }
4052 return 0;
4053 }
4054
4055 static int nl80211_set_station_tdls(struct genl_info *info,
4056 struct station_parameters *params)
4057 {
4058 int err;
4059 /* Dummy STA entry gets updated once the peer capabilities are known */
4060 if (info->attrs[NL80211_ATTR_PEER_AID])
4061 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4062 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4063 params->ht_capa =
4064 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4065 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4066 params->vht_capa =
4067 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4068
4069 err = nl80211_parse_sta_channel_info(info, params);
4070 if (err)
4071 return err;
4072
4073 return nl80211_parse_sta_wme(info, params);
4074 }
4075
4076 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4077 {
4078 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4079 struct net_device *dev = info->user_ptr[1];
4080 struct station_parameters params;
4081 u8 *mac_addr;
4082 int err;
4083
4084 memset(&params, 0, sizeof(params));
4085
4086 params.listen_interval = -1;
4087
4088 if (!rdev->ops->change_station)
4089 return -EOPNOTSUPP;
4090
4091 if (info->attrs[NL80211_ATTR_STA_AID])
4092 return -EINVAL;
4093
4094 if (!info->attrs[NL80211_ATTR_MAC])
4095 return -EINVAL;
4096
4097 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4098
4099 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4100 params.supported_rates =
4101 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4102 params.supported_rates_len =
4103 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4104 }
4105
4106 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4107 params.capability =
4108 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4109 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4110 }
4111
4112 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4113 params.ext_capab =
4114 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4115 params.ext_capab_len =
4116 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4117 }
4118
4119 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4120 return -EINVAL;
4121
4122 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4123 return -EINVAL;
4124
4125 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4126 params.plink_action =
4127 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4128 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4129 return -EINVAL;
4130 }
4131
4132 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4133 params.plink_state =
4134 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4135 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4136 return -EINVAL;
4137 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4138 }
4139
4140 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4141 enum nl80211_mesh_power_mode pm = nla_get_u32(
4142 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4143
4144 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4145 pm > NL80211_MESH_POWER_MAX)
4146 return -EINVAL;
4147
4148 params.local_pm = pm;
4149 }
4150
4151 /* Include parameters for TDLS peer (will check later) */
4152 err = nl80211_set_station_tdls(info, &params);
4153 if (err)
4154 return err;
4155
4156 params.vlan = get_vlan(info, rdev);
4157 if (IS_ERR(params.vlan))
4158 return PTR_ERR(params.vlan);
4159
4160 switch (dev->ieee80211_ptr->iftype) {
4161 case NL80211_IFTYPE_AP:
4162 case NL80211_IFTYPE_AP_VLAN:
4163 case NL80211_IFTYPE_P2P_GO:
4164 case NL80211_IFTYPE_P2P_CLIENT:
4165 case NL80211_IFTYPE_STATION:
4166 case NL80211_IFTYPE_ADHOC:
4167 case NL80211_IFTYPE_MESH_POINT:
4168 break;
4169 default:
4170 err = -EOPNOTSUPP;
4171 goto out_put_vlan;
4172 }
4173
4174 /* driver will call cfg80211_check_station_change() */
4175 err = rdev_change_station(rdev, dev, mac_addr, &params);
4176
4177 out_put_vlan:
4178 if (params.vlan)
4179 dev_put(params.vlan);
4180
4181 return err;
4182 }
4183
4184 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4185 {
4186 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4187 int err;
4188 struct net_device *dev = info->user_ptr[1];
4189 struct station_parameters params;
4190 u8 *mac_addr = NULL;
4191
4192 memset(&params, 0, sizeof(params));
4193
4194 if (!rdev->ops->add_station)
4195 return -EOPNOTSUPP;
4196
4197 if (!info->attrs[NL80211_ATTR_MAC])
4198 return -EINVAL;
4199
4200 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4201 return -EINVAL;
4202
4203 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4204 return -EINVAL;
4205
4206 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4207 !info->attrs[NL80211_ATTR_PEER_AID])
4208 return -EINVAL;
4209
4210 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4211 params.supported_rates =
4212 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4213 params.supported_rates_len =
4214 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4215 params.listen_interval =
4216 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4217
4218 if (info->attrs[NL80211_ATTR_PEER_AID])
4219 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4220 else
4221 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4222 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4223 return -EINVAL;
4224
4225 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4226 params.capability =
4227 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4228 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4229 }
4230
4231 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4232 params.ext_capab =
4233 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4234 params.ext_capab_len =
4235 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4236 }
4237
4238 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4239 params.ht_capa =
4240 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4241
4242 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4243 params.vht_capa =
4244 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4245
4246 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4247 params.opmode_notif_used = true;
4248 params.opmode_notif =
4249 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4250 }
4251
4252 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4253 params.plink_action =
4254 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4255 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4256 return -EINVAL;
4257 }
4258
4259 err = nl80211_parse_sta_channel_info(info, &params);
4260 if (err)
4261 return err;
4262
4263 err = nl80211_parse_sta_wme(info, &params);
4264 if (err)
4265 return err;
4266
4267 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4268 return -EINVAL;
4269
4270 /* When you run into this, adjust the code below for the new flag */
4271 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4272
4273 switch (dev->ieee80211_ptr->iftype) {
4274 case NL80211_IFTYPE_AP:
4275 case NL80211_IFTYPE_AP_VLAN:
4276 case NL80211_IFTYPE_P2P_GO:
4277 /* ignore WME attributes if iface/sta is not capable */
4278 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4279 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4280 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4281
4282 /* TDLS peers cannot be added */
4283 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4284 info->attrs[NL80211_ATTR_PEER_AID])
4285 return -EINVAL;
4286 /* but don't bother the driver with it */
4287 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4288
4289 /* allow authenticated/associated only if driver handles it */
4290 if (!(rdev->wiphy.features &
4291 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4292 params.sta_flags_mask &
4293 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4294 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4295 return -EINVAL;
4296
4297 /* must be last in here for error handling */
4298 params.vlan = get_vlan(info, rdev);
4299 if (IS_ERR(params.vlan))
4300 return PTR_ERR(params.vlan);
4301 break;
4302 case NL80211_IFTYPE_MESH_POINT:
4303 /* ignore uAPSD data */
4304 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4305
4306 /* associated is disallowed */
4307 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4308 return -EINVAL;
4309 /* TDLS peers cannot be added */
4310 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4311 info->attrs[NL80211_ATTR_PEER_AID])
4312 return -EINVAL;
4313 break;
4314 case NL80211_IFTYPE_STATION:
4315 case NL80211_IFTYPE_P2P_CLIENT:
4316 /* ignore uAPSD data */
4317 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4318
4319 /* these are disallowed */
4320 if (params.sta_flags_mask &
4321 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4322 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4323 return -EINVAL;
4324 /* Only TDLS peers can be added */
4325 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4326 return -EINVAL;
4327 /* Can only add if TDLS ... */
4328 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4329 return -EOPNOTSUPP;
4330 /* ... with external setup is supported */
4331 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4332 return -EOPNOTSUPP;
4333 /*
4334 * Older wpa_supplicant versions always mark the TDLS peer
4335 * as authorized, but it shouldn't yet be.
4336 */
4337 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4338 break;
4339 default:
4340 return -EOPNOTSUPP;
4341 }
4342
4343 /* be aware of params.vlan when changing code here */
4344
4345 err = rdev_add_station(rdev, dev, mac_addr, &params);
4346
4347 if (params.vlan)
4348 dev_put(params.vlan);
4349 return err;
4350 }
4351
4352 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4353 {
4354 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4355 struct net_device *dev = info->user_ptr[1];
4356 u8 *mac_addr = NULL;
4357
4358 if (info->attrs[NL80211_ATTR_MAC])
4359 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4360
4361 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4362 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4363 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4364 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4365 return -EINVAL;
4366
4367 if (!rdev->ops->del_station)
4368 return -EOPNOTSUPP;
4369
4370 return rdev_del_station(rdev, dev, mac_addr);
4371 }
4372
4373 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4374 int flags, struct net_device *dev,
4375 u8 *dst, u8 *next_hop,
4376 struct mpath_info *pinfo)
4377 {
4378 void *hdr;
4379 struct nlattr *pinfoattr;
4380
4381 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4382 if (!hdr)
4383 return -1;
4384
4385 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4386 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4387 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4388 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4389 goto nla_put_failure;
4390
4391 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4392 if (!pinfoattr)
4393 goto nla_put_failure;
4394 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4395 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4396 pinfo->frame_qlen))
4397 goto nla_put_failure;
4398 if (((pinfo->filled & MPATH_INFO_SN) &&
4399 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4400 ((pinfo->filled & MPATH_INFO_METRIC) &&
4401 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4402 pinfo->metric)) ||
4403 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4404 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4405 pinfo->exptime)) ||
4406 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4407 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4408 pinfo->flags)) ||
4409 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4410 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4411 pinfo->discovery_timeout)) ||
4412 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4413 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4414 pinfo->discovery_retries)))
4415 goto nla_put_failure;
4416
4417 nla_nest_end(msg, pinfoattr);
4418
4419 return genlmsg_end(msg, hdr);
4420
4421 nla_put_failure:
4422 genlmsg_cancel(msg, hdr);
4423 return -EMSGSIZE;
4424 }
4425
4426 static int nl80211_dump_mpath(struct sk_buff *skb,
4427 struct netlink_callback *cb)
4428 {
4429 struct mpath_info pinfo;
4430 struct cfg80211_registered_device *rdev;
4431 struct wireless_dev *wdev;
4432 u8 dst[ETH_ALEN];
4433 u8 next_hop[ETH_ALEN];
4434 int path_idx = cb->args[2];
4435 int err;
4436
4437 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4438 if (err)
4439 return err;
4440
4441 if (!rdev->ops->dump_mpath) {
4442 err = -EOPNOTSUPP;
4443 goto out_err;
4444 }
4445
4446 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4447 err = -EOPNOTSUPP;
4448 goto out_err;
4449 }
4450
4451 while (1) {
4452 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4453 next_hop, &pinfo);
4454 if (err == -ENOENT)
4455 break;
4456 if (err)
4457 goto out_err;
4458
4459 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4460 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4461 wdev->netdev, dst, next_hop,
4462 &pinfo) < 0)
4463 goto out;
4464
4465 path_idx++;
4466 }
4467
4468
4469 out:
4470 cb->args[2] = path_idx;
4471 err = skb->len;
4472 out_err:
4473 nl80211_finish_wdev_dump(rdev);
4474 return err;
4475 }
4476
4477 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4478 {
4479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4480 int err;
4481 struct net_device *dev = info->user_ptr[1];
4482 struct mpath_info pinfo;
4483 struct sk_buff *msg;
4484 u8 *dst = NULL;
4485 u8 next_hop[ETH_ALEN];
4486
4487 memset(&pinfo, 0, sizeof(pinfo));
4488
4489 if (!info->attrs[NL80211_ATTR_MAC])
4490 return -EINVAL;
4491
4492 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4493
4494 if (!rdev->ops->get_mpath)
4495 return -EOPNOTSUPP;
4496
4497 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4498 return -EOPNOTSUPP;
4499
4500 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4501 if (err)
4502 return err;
4503
4504 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4505 if (!msg)
4506 return -ENOMEM;
4507
4508 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4509 dev, dst, next_hop, &pinfo) < 0) {
4510 nlmsg_free(msg);
4511 return -ENOBUFS;
4512 }
4513
4514 return genlmsg_reply(msg, info);
4515 }
4516
4517 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4518 {
4519 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4520 struct net_device *dev = info->user_ptr[1];
4521 u8 *dst = NULL;
4522 u8 *next_hop = NULL;
4523
4524 if (!info->attrs[NL80211_ATTR_MAC])
4525 return -EINVAL;
4526
4527 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4528 return -EINVAL;
4529
4530 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4531 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4532
4533 if (!rdev->ops->change_mpath)
4534 return -EOPNOTSUPP;
4535
4536 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4537 return -EOPNOTSUPP;
4538
4539 return rdev_change_mpath(rdev, dev, dst, next_hop);
4540 }
4541
4542 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4543 {
4544 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4545 struct net_device *dev = info->user_ptr[1];
4546 u8 *dst = NULL;
4547 u8 *next_hop = NULL;
4548
4549 if (!info->attrs[NL80211_ATTR_MAC])
4550 return -EINVAL;
4551
4552 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4553 return -EINVAL;
4554
4555 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4556 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4557
4558 if (!rdev->ops->add_mpath)
4559 return -EOPNOTSUPP;
4560
4561 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4562 return -EOPNOTSUPP;
4563
4564 return rdev_add_mpath(rdev, dev, dst, next_hop);
4565 }
4566
4567 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4568 {
4569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4570 struct net_device *dev = info->user_ptr[1];
4571 u8 *dst = NULL;
4572
4573 if (info->attrs[NL80211_ATTR_MAC])
4574 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4575
4576 if (!rdev->ops->del_mpath)
4577 return -EOPNOTSUPP;
4578
4579 return rdev_del_mpath(rdev, dev, dst);
4580 }
4581
4582 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4583 {
4584 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4585 struct net_device *dev = info->user_ptr[1];
4586 struct wireless_dev *wdev = dev->ieee80211_ptr;
4587 struct bss_parameters params;
4588 int err;
4589
4590 memset(&params, 0, sizeof(params));
4591 /* default to not changing parameters */
4592 params.use_cts_prot = -1;
4593 params.use_short_preamble = -1;
4594 params.use_short_slot_time = -1;
4595 params.ap_isolate = -1;
4596 params.ht_opmode = -1;
4597 params.p2p_ctwindow = -1;
4598 params.p2p_opp_ps = -1;
4599
4600 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4601 params.use_cts_prot =
4602 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4603 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4604 params.use_short_preamble =
4605 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4606 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4607 params.use_short_slot_time =
4608 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4609 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4610 params.basic_rates =
4611 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4612 params.basic_rates_len =
4613 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4614 }
4615 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4616 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4617 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4618 params.ht_opmode =
4619 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4620
4621 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4622 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4623 return -EINVAL;
4624 params.p2p_ctwindow =
4625 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4626 if (params.p2p_ctwindow < 0)
4627 return -EINVAL;
4628 if (params.p2p_ctwindow != 0 &&
4629 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4630 return -EINVAL;
4631 }
4632
4633 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4634 u8 tmp;
4635
4636 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4637 return -EINVAL;
4638 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4639 if (tmp > 1)
4640 return -EINVAL;
4641 params.p2p_opp_ps = tmp;
4642 if (params.p2p_opp_ps &&
4643 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4644 return -EINVAL;
4645 }
4646
4647 if (!rdev->ops->change_bss)
4648 return -EOPNOTSUPP;
4649
4650 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4651 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4652 return -EOPNOTSUPP;
4653
4654 wdev_lock(wdev);
4655 err = rdev_change_bss(rdev, dev, &params);
4656 wdev_unlock(wdev);
4657
4658 return err;
4659 }
4660
4661 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4662 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4663 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4664 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4665 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4666 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4667 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4668 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4669 };
4670
4671 static int parse_reg_rule(struct nlattr *tb[],
4672 struct ieee80211_reg_rule *reg_rule)
4673 {
4674 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4675 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4676
4677 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4678 return -EINVAL;
4679 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4680 return -EINVAL;
4681 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4682 return -EINVAL;
4683 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4684 return -EINVAL;
4685 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4686 return -EINVAL;
4687
4688 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4689
4690 freq_range->start_freq_khz =
4691 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4692 freq_range->end_freq_khz =
4693 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4694 freq_range->max_bandwidth_khz =
4695 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4696
4697 power_rule->max_eirp =
4698 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4699
4700 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4701 power_rule->max_antenna_gain =
4702 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4703
4704 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4705 reg_rule->dfs_cac_ms =
4706 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4707
4708 return 0;
4709 }
4710
4711 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4712 {
4713 char *data = NULL;
4714 enum nl80211_user_reg_hint_type user_reg_hint_type;
4715
4716 /*
4717 * You should only get this when cfg80211 hasn't yet initialized
4718 * completely when built-in to the kernel right between the time
4719 * window between nl80211_init() and regulatory_init(), if that is
4720 * even possible.
4721 */
4722 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4723 return -EINPROGRESS;
4724
4725 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4726 user_reg_hint_type =
4727 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4728 else
4729 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4730
4731 switch (user_reg_hint_type) {
4732 case NL80211_USER_REG_HINT_USER:
4733 case NL80211_USER_REG_HINT_CELL_BASE:
4734 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4735 return -EINVAL;
4736
4737 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4738 return regulatory_hint_user(data, user_reg_hint_type);
4739 case NL80211_USER_REG_HINT_INDOOR:
4740 return regulatory_hint_indoor_user();
4741 default:
4742 return -EINVAL;
4743 }
4744 }
4745
4746 static int nl80211_get_mesh_config(struct sk_buff *skb,
4747 struct genl_info *info)
4748 {
4749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4750 struct net_device *dev = info->user_ptr[1];
4751 struct wireless_dev *wdev = dev->ieee80211_ptr;
4752 struct mesh_config cur_params;
4753 int err = 0;
4754 void *hdr;
4755 struct nlattr *pinfoattr;
4756 struct sk_buff *msg;
4757
4758 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4759 return -EOPNOTSUPP;
4760
4761 if (!rdev->ops->get_mesh_config)
4762 return -EOPNOTSUPP;
4763
4764 wdev_lock(wdev);
4765 /* If not connected, get default parameters */
4766 if (!wdev->mesh_id_len)
4767 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4768 else
4769 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4770 wdev_unlock(wdev);
4771
4772 if (err)
4773 return err;
4774
4775 /* Draw up a netlink message to send back */
4776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4777 if (!msg)
4778 return -ENOMEM;
4779 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4780 NL80211_CMD_GET_MESH_CONFIG);
4781 if (!hdr)
4782 goto out;
4783 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4784 if (!pinfoattr)
4785 goto nla_put_failure;
4786 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4787 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4788 cur_params.dot11MeshRetryTimeout) ||
4789 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4790 cur_params.dot11MeshConfirmTimeout) ||
4791 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4792 cur_params.dot11MeshHoldingTimeout) ||
4793 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4794 cur_params.dot11MeshMaxPeerLinks) ||
4795 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4796 cur_params.dot11MeshMaxRetries) ||
4797 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4798 cur_params.dot11MeshTTL) ||
4799 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4800 cur_params.element_ttl) ||
4801 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4802 cur_params.auto_open_plinks) ||
4803 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4804 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4805 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4806 cur_params.dot11MeshHWMPmaxPREQretries) ||
4807 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4808 cur_params.path_refresh_time) ||
4809 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4810 cur_params.min_discovery_timeout) ||
4811 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4812 cur_params.dot11MeshHWMPactivePathTimeout) ||
4813 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4814 cur_params.dot11MeshHWMPpreqMinInterval) ||
4815 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4816 cur_params.dot11MeshHWMPperrMinInterval) ||
4817 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4818 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4819 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4820 cur_params.dot11MeshHWMPRootMode) ||
4821 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4822 cur_params.dot11MeshHWMPRannInterval) ||
4823 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4824 cur_params.dot11MeshGateAnnouncementProtocol) ||
4825 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4826 cur_params.dot11MeshForwarding) ||
4827 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4828 cur_params.rssi_threshold) ||
4829 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4830 cur_params.ht_opmode) ||
4831 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4832 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4833 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4834 cur_params.dot11MeshHWMProotInterval) ||
4835 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4836 cur_params.dot11MeshHWMPconfirmationInterval) ||
4837 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4838 cur_params.power_mode) ||
4839 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4840 cur_params.dot11MeshAwakeWindowDuration) ||
4841 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4842 cur_params.plink_timeout))
4843 goto nla_put_failure;
4844 nla_nest_end(msg, pinfoattr);
4845 genlmsg_end(msg, hdr);
4846 return genlmsg_reply(msg, info);
4847
4848 nla_put_failure:
4849 genlmsg_cancel(msg, hdr);
4850 out:
4851 nlmsg_free(msg);
4852 return -ENOBUFS;
4853 }
4854
4855 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4856 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4857 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4858 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4859 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4860 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4861 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4862 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4863 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4864 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4865 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4866 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4867 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4868 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4869 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4870 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4871 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4872 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4873 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4874 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4875 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4876 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4877 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4878 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4879 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4880 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4881 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4882 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4883 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4884 };
4885
4886 static const struct nla_policy
4887 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4888 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4889 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4890 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4891 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4892 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4893 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4894 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4895 .len = IEEE80211_MAX_DATA_LEN },
4896 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4897 };
4898
4899 static int nl80211_parse_mesh_config(struct genl_info *info,
4900 struct mesh_config *cfg,
4901 u32 *mask_out)
4902 {
4903 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4904 u32 mask = 0;
4905
4906 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4907 do { \
4908 if (tb[attr]) { \
4909 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4910 return -EINVAL; \
4911 cfg->param = fn(tb[attr]); \
4912 mask |= (1 << (attr - 1)); \
4913 } \
4914 } while (0)
4915
4916
4917 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4918 return -EINVAL;
4919 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4920 info->attrs[NL80211_ATTR_MESH_CONFIG],
4921 nl80211_meshconf_params_policy))
4922 return -EINVAL;
4923
4924 /* This makes sure that there aren't more than 32 mesh config
4925 * parameters (otherwise our bitfield scheme would not work.) */
4926 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4927
4928 /* Fill in the params struct */
4929 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4930 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4931 nla_get_u16);
4932 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4933 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4934 nla_get_u16);
4935 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4936 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4937 nla_get_u16);
4938 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4939 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4940 nla_get_u16);
4941 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4942 mask, NL80211_MESHCONF_MAX_RETRIES,
4943 nla_get_u8);
4944 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4945 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4946 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4947 mask, NL80211_MESHCONF_ELEMENT_TTL,
4948 nla_get_u8);
4949 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4950 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4951 nla_get_u8);
4952 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4953 1, 255, mask,
4954 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4955 nla_get_u32);
4956 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4957 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4958 nla_get_u8);
4959 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4960 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4961 nla_get_u32);
4962 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4963 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4964 nla_get_u16);
4965 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4966 1, 65535, mask,
4967 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4968 nla_get_u32);
4969 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4970 1, 65535, mask,
4971 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4972 nla_get_u16);
4973 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4974 1, 65535, mask,
4975 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4976 nla_get_u16);
4977 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4978 dot11MeshHWMPnetDiameterTraversalTime,
4979 1, 65535, mask,
4980 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4981 nla_get_u16);
4982 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4983 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4984 nla_get_u8);
4985 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4986 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4987 nla_get_u16);
4988 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4989 dot11MeshGateAnnouncementProtocol, 0, 1,
4990 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4991 nla_get_u8);
4992 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4993 mask, NL80211_MESHCONF_FORWARDING,
4994 nla_get_u8);
4995 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4996 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4997 nla_get_s32);
4998 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4999 mask, NL80211_MESHCONF_HT_OPMODE,
5000 nla_get_u16);
5001 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5002 1, 65535, mask,
5003 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5004 nla_get_u32);
5005 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5006 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5007 nla_get_u16);
5008 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5009 dot11MeshHWMPconfirmationInterval,
5010 1, 65535, mask,
5011 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5012 nla_get_u16);
5013 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5014 NL80211_MESH_POWER_ACTIVE,
5015 NL80211_MESH_POWER_MAX,
5016 mask, NL80211_MESHCONF_POWER_MODE,
5017 nla_get_u32);
5018 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5019 0, 65535, mask,
5020 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5021 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5022 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5023 nla_get_u32);
5024 if (mask_out)
5025 *mask_out = mask;
5026
5027 return 0;
5028
5029 #undef FILL_IN_MESH_PARAM_IF_SET
5030 }
5031
5032 static int nl80211_parse_mesh_setup(struct genl_info *info,
5033 struct mesh_setup *setup)
5034 {
5035 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5036 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5037
5038 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5039 return -EINVAL;
5040 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5041 info->attrs[NL80211_ATTR_MESH_SETUP],
5042 nl80211_mesh_setup_params_policy))
5043 return -EINVAL;
5044
5045 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5046 setup->sync_method =
5047 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5048 IEEE80211_SYNC_METHOD_VENDOR :
5049 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5050
5051 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5052 setup->path_sel_proto =
5053 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5054 IEEE80211_PATH_PROTOCOL_VENDOR :
5055 IEEE80211_PATH_PROTOCOL_HWMP;
5056
5057 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5058 setup->path_metric =
5059 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5060 IEEE80211_PATH_METRIC_VENDOR :
5061 IEEE80211_PATH_METRIC_AIRTIME;
5062
5063
5064 if (tb[NL80211_MESH_SETUP_IE]) {
5065 struct nlattr *ieattr =
5066 tb[NL80211_MESH_SETUP_IE];
5067 if (!is_valid_ie_attr(ieattr))
5068 return -EINVAL;
5069 setup->ie = nla_data(ieattr);
5070 setup->ie_len = nla_len(ieattr);
5071 }
5072 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5073 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5074 return -EINVAL;
5075 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5076 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5077 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5078 if (setup->is_secure)
5079 setup->user_mpm = true;
5080
5081 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5082 if (!setup->user_mpm)
5083 return -EINVAL;
5084 setup->auth_id =
5085 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5086 }
5087
5088 return 0;
5089 }
5090
5091 static int nl80211_update_mesh_config(struct sk_buff *skb,
5092 struct genl_info *info)
5093 {
5094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5095 struct net_device *dev = info->user_ptr[1];
5096 struct wireless_dev *wdev = dev->ieee80211_ptr;
5097 struct mesh_config cfg;
5098 u32 mask;
5099 int err;
5100
5101 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5102 return -EOPNOTSUPP;
5103
5104 if (!rdev->ops->update_mesh_config)
5105 return -EOPNOTSUPP;
5106
5107 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5108 if (err)
5109 return err;
5110
5111 wdev_lock(wdev);
5112 if (!wdev->mesh_id_len)
5113 err = -ENOLINK;
5114
5115 if (!err)
5116 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5117
5118 wdev_unlock(wdev);
5119
5120 return err;
5121 }
5122
5123 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5124 {
5125 const struct ieee80211_regdomain *regdom;
5126 struct sk_buff *msg;
5127 void *hdr = NULL;
5128 struct nlattr *nl_reg_rules;
5129 unsigned int i;
5130
5131 if (!cfg80211_regdomain)
5132 return -EINVAL;
5133
5134 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5135 if (!msg)
5136 return -ENOBUFS;
5137
5138 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5139 NL80211_CMD_GET_REG);
5140 if (!hdr)
5141 goto put_failure;
5142
5143 if (reg_last_request_cell_base() &&
5144 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5145 NL80211_USER_REG_HINT_CELL_BASE))
5146 goto nla_put_failure;
5147
5148 rcu_read_lock();
5149 regdom = rcu_dereference(cfg80211_regdomain);
5150
5151 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5152 (regdom->dfs_region &&
5153 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5154 goto nla_put_failure_rcu;
5155
5156 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5157 if (!nl_reg_rules)
5158 goto nla_put_failure_rcu;
5159
5160 for (i = 0; i < regdom->n_reg_rules; i++) {
5161 struct nlattr *nl_reg_rule;
5162 const struct ieee80211_reg_rule *reg_rule;
5163 const struct ieee80211_freq_range *freq_range;
5164 const struct ieee80211_power_rule *power_rule;
5165 unsigned int max_bandwidth_khz;
5166
5167 reg_rule = &regdom->reg_rules[i];
5168 freq_range = &reg_rule->freq_range;
5169 power_rule = &reg_rule->power_rule;
5170
5171 nl_reg_rule = nla_nest_start(msg, i);
5172 if (!nl_reg_rule)
5173 goto nla_put_failure_rcu;
5174
5175 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5176 if (!max_bandwidth_khz)
5177 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5178 reg_rule);
5179
5180 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5181 reg_rule->flags) ||
5182 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5183 freq_range->start_freq_khz) ||
5184 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5185 freq_range->end_freq_khz) ||
5186 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5187 max_bandwidth_khz) ||
5188 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5189 power_rule->max_antenna_gain) ||
5190 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5191 power_rule->max_eirp) ||
5192 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5193 reg_rule->dfs_cac_ms))
5194 goto nla_put_failure_rcu;
5195
5196 nla_nest_end(msg, nl_reg_rule);
5197 }
5198 rcu_read_unlock();
5199
5200 nla_nest_end(msg, nl_reg_rules);
5201
5202 genlmsg_end(msg, hdr);
5203 return genlmsg_reply(msg, info);
5204
5205 nla_put_failure_rcu:
5206 rcu_read_unlock();
5207 nla_put_failure:
5208 genlmsg_cancel(msg, hdr);
5209 put_failure:
5210 nlmsg_free(msg);
5211 return -EMSGSIZE;
5212 }
5213
5214 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5215 {
5216 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5217 struct nlattr *nl_reg_rule;
5218 char *alpha2 = NULL;
5219 int rem_reg_rules = 0, r = 0;
5220 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5221 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5222 struct ieee80211_regdomain *rd = NULL;
5223
5224 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5225 return -EINVAL;
5226
5227 if (!info->attrs[NL80211_ATTR_REG_RULES])
5228 return -EINVAL;
5229
5230 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5231
5232 if (info->attrs[NL80211_ATTR_DFS_REGION])
5233 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5234
5235 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5236 rem_reg_rules) {
5237 num_rules++;
5238 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5239 return -EINVAL;
5240 }
5241
5242 if (!reg_is_valid_request(alpha2))
5243 return -EINVAL;
5244
5245 size_of_regd = sizeof(struct ieee80211_regdomain) +
5246 num_rules * sizeof(struct ieee80211_reg_rule);
5247
5248 rd = kzalloc(size_of_regd, GFP_KERNEL);
5249 if (!rd)
5250 return -ENOMEM;
5251
5252 rd->n_reg_rules = num_rules;
5253 rd->alpha2[0] = alpha2[0];
5254 rd->alpha2[1] = alpha2[1];
5255
5256 /*
5257 * Disable DFS master mode if the DFS region was
5258 * not supported or known on this kernel.
5259 */
5260 if (reg_supported_dfs_region(dfs_region))
5261 rd->dfs_region = dfs_region;
5262
5263 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5264 rem_reg_rules) {
5265 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5266 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5267 reg_rule_policy);
5268 if (r)
5269 goto bad_reg;
5270 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5271 if (r)
5272 goto bad_reg;
5273
5274 rule_idx++;
5275
5276 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5277 r = -EINVAL;
5278 goto bad_reg;
5279 }
5280 }
5281
5282 r = set_regdom(rd);
5283 /* set_regdom took ownership */
5284 rd = NULL;
5285
5286 bad_reg:
5287 kfree(rd);
5288 return r;
5289 }
5290
5291 static int validate_scan_freqs(struct nlattr *freqs)
5292 {
5293 struct nlattr *attr1, *attr2;
5294 int n_channels = 0, tmp1, tmp2;
5295
5296 nla_for_each_nested(attr1, freqs, tmp1) {
5297 n_channels++;
5298 /*
5299 * Some hardware has a limited channel list for
5300 * scanning, and it is pretty much nonsensical
5301 * to scan for a channel twice, so disallow that
5302 * and don't require drivers to check that the
5303 * channel list they get isn't longer than what
5304 * they can scan, as long as they can scan all
5305 * the channels they registered at once.
5306 */
5307 nla_for_each_nested(attr2, freqs, tmp2)
5308 if (attr1 != attr2 &&
5309 nla_get_u32(attr1) == nla_get_u32(attr2))
5310 return 0;
5311 }
5312
5313 return n_channels;
5314 }
5315
5316 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5317 {
5318 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5319 struct wireless_dev *wdev = info->user_ptr[1];
5320 struct cfg80211_scan_request *request;
5321 struct nlattr *attr;
5322 struct wiphy *wiphy;
5323 int err, tmp, n_ssids = 0, n_channels, i;
5324 size_t ie_len;
5325
5326 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5327 return -EINVAL;
5328
5329 wiphy = &rdev->wiphy;
5330
5331 if (!rdev->ops->scan)
5332 return -EOPNOTSUPP;
5333
5334 if (rdev->scan_req || rdev->scan_msg) {
5335 err = -EBUSY;
5336 goto unlock;
5337 }
5338
5339 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5340 n_channels = validate_scan_freqs(
5341 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5342 if (!n_channels) {
5343 err = -EINVAL;
5344 goto unlock;
5345 }
5346 } else {
5347 n_channels = ieee80211_get_num_supported_channels(wiphy);
5348 }
5349
5350 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5351 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5352 n_ssids++;
5353
5354 if (n_ssids > wiphy->max_scan_ssids) {
5355 err = -EINVAL;
5356 goto unlock;
5357 }
5358
5359 if (info->attrs[NL80211_ATTR_IE])
5360 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5361 else
5362 ie_len = 0;
5363
5364 if (ie_len > wiphy->max_scan_ie_len) {
5365 err = -EINVAL;
5366 goto unlock;
5367 }
5368
5369 request = kzalloc(sizeof(*request)
5370 + sizeof(*request->ssids) * n_ssids
5371 + sizeof(*request->channels) * n_channels
5372 + ie_len, GFP_KERNEL);
5373 if (!request) {
5374 err = -ENOMEM;
5375 goto unlock;
5376 }
5377
5378 if (n_ssids)
5379 request->ssids = (void *)&request->channels[n_channels];
5380 request->n_ssids = n_ssids;
5381 if (ie_len) {
5382 if (request->ssids)
5383 request->ie = (void *)(request->ssids + n_ssids);
5384 else
5385 request->ie = (void *)(request->channels + n_channels);
5386 }
5387
5388 i = 0;
5389 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5390 /* user specified, bail out if channel not found */
5391 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5392 struct ieee80211_channel *chan;
5393
5394 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5395
5396 if (!chan) {
5397 err = -EINVAL;
5398 goto out_free;
5399 }
5400
5401 /* ignore disabled channels */
5402 if (chan->flags & IEEE80211_CHAN_DISABLED)
5403 continue;
5404
5405 request->channels[i] = chan;
5406 i++;
5407 }
5408 } else {
5409 enum ieee80211_band band;
5410
5411 /* all channels */
5412 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5413 int j;
5414 if (!wiphy->bands[band])
5415 continue;
5416 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5417 struct ieee80211_channel *chan;
5418
5419 chan = &wiphy->bands[band]->channels[j];
5420
5421 if (chan->flags & IEEE80211_CHAN_DISABLED)
5422 continue;
5423
5424 request->channels[i] = chan;
5425 i++;
5426 }
5427 }
5428 }
5429
5430 if (!i) {
5431 err = -EINVAL;
5432 goto out_free;
5433 }
5434
5435 request->n_channels = i;
5436
5437 i = 0;
5438 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5439 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5440 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5441 err = -EINVAL;
5442 goto out_free;
5443 }
5444 request->ssids[i].ssid_len = nla_len(attr);
5445 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5446 i++;
5447 }
5448 }
5449
5450 if (info->attrs[NL80211_ATTR_IE]) {
5451 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5452 memcpy((void *)request->ie,
5453 nla_data(info->attrs[NL80211_ATTR_IE]),
5454 request->ie_len);
5455 }
5456
5457 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5458 if (wiphy->bands[i])
5459 request->rates[i] =
5460 (1 << wiphy->bands[i]->n_bitrates) - 1;
5461
5462 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5463 nla_for_each_nested(attr,
5464 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5465 tmp) {
5466 enum ieee80211_band band = nla_type(attr);
5467
5468 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5469 err = -EINVAL;
5470 goto out_free;
5471 }
5472
5473 if (!wiphy->bands[band])
5474 continue;
5475
5476 err = ieee80211_get_ratemask(wiphy->bands[band],
5477 nla_data(attr),
5478 nla_len(attr),
5479 &request->rates[band]);
5480 if (err)
5481 goto out_free;
5482 }
5483 }
5484
5485 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5486 request->flags = nla_get_u32(
5487 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5488 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5489 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5490 err = -EOPNOTSUPP;
5491 goto out_free;
5492 }
5493 }
5494
5495 request->no_cck =
5496 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5497
5498 request->wdev = wdev;
5499 request->wiphy = &rdev->wiphy;
5500 request->scan_start = jiffies;
5501
5502 rdev->scan_req = request;
5503 err = rdev_scan(rdev, request);
5504
5505 if (!err) {
5506 nl80211_send_scan_start(rdev, wdev);
5507 if (wdev->netdev)
5508 dev_hold(wdev->netdev);
5509 } else {
5510 out_free:
5511 rdev->scan_req = NULL;
5512 kfree(request);
5513 }
5514
5515 unlock:
5516 return err;
5517 }
5518
5519 static int nl80211_start_sched_scan(struct sk_buff *skb,
5520 struct genl_info *info)
5521 {
5522 struct cfg80211_sched_scan_request *request;
5523 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5524 struct net_device *dev = info->user_ptr[1];
5525 struct nlattr *attr;
5526 struct wiphy *wiphy;
5527 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5528 u32 interval;
5529 enum ieee80211_band band;
5530 size_t ie_len;
5531 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5532 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5533
5534 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5535 !rdev->ops->sched_scan_start)
5536 return -EOPNOTSUPP;
5537
5538 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5539 return -EINVAL;
5540
5541 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5542 return -EINVAL;
5543
5544 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5545 if (interval == 0)
5546 return -EINVAL;
5547
5548 wiphy = &rdev->wiphy;
5549
5550 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5551 n_channels = validate_scan_freqs(
5552 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5553 if (!n_channels)
5554 return -EINVAL;
5555 } else {
5556 n_channels = ieee80211_get_num_supported_channels(wiphy);
5557 }
5558
5559 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5560 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5561 tmp)
5562 n_ssids++;
5563
5564 if (n_ssids > wiphy->max_sched_scan_ssids)
5565 return -EINVAL;
5566
5567 /*
5568 * First, count the number of 'real' matchsets. Due to an issue with
5569 * the old implementation, matchsets containing only the RSSI attribute
5570 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5571 * RSSI for all matchsets, rather than their own matchset for reporting
5572 * all APs with a strong RSSI. This is needed to be compatible with
5573 * older userspace that treated a matchset with only the RSSI as the
5574 * global RSSI for all other matchsets - if there are other matchsets.
5575 */
5576 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5577 nla_for_each_nested(attr,
5578 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5579 tmp) {
5580 struct nlattr *rssi;
5581
5582 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5583 nla_data(attr), nla_len(attr),
5584 nl80211_match_policy);
5585 if (err)
5586 return err;
5587 /* add other standalone attributes here */
5588 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5589 n_match_sets++;
5590 continue;
5591 }
5592 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5593 if (rssi)
5594 default_match_rssi = nla_get_s32(rssi);
5595 }
5596 }
5597
5598 /* However, if there's no other matchset, add the RSSI one */
5599 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5600 n_match_sets = 1;
5601
5602 if (n_match_sets > wiphy->max_match_sets)
5603 return -EINVAL;
5604
5605 if (info->attrs[NL80211_ATTR_IE])
5606 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5607 else
5608 ie_len = 0;
5609
5610 if (ie_len > wiphy->max_sched_scan_ie_len)
5611 return -EINVAL;
5612
5613 if (rdev->sched_scan_req) {
5614 err = -EINPROGRESS;
5615 goto out;
5616 }
5617
5618 request = kzalloc(sizeof(*request)
5619 + sizeof(*request->ssids) * n_ssids
5620 + sizeof(*request->match_sets) * n_match_sets
5621 + sizeof(*request->channels) * n_channels
5622 + ie_len, GFP_KERNEL);
5623 if (!request) {
5624 err = -ENOMEM;
5625 goto out;
5626 }
5627
5628 if (n_ssids)
5629 request->ssids = (void *)&request->channels[n_channels];
5630 request->n_ssids = n_ssids;
5631 if (ie_len) {
5632 if (request->ssids)
5633 request->ie = (void *)(request->ssids + n_ssids);
5634 else
5635 request->ie = (void *)(request->channels + n_channels);
5636 }
5637
5638 if (n_match_sets) {
5639 if (request->ie)
5640 request->match_sets = (void *)(request->ie + ie_len);
5641 else if (request->ssids)
5642 request->match_sets =
5643 (void *)(request->ssids + n_ssids);
5644 else
5645 request->match_sets =
5646 (void *)(request->channels + n_channels);
5647 }
5648 request->n_match_sets = n_match_sets;
5649
5650 i = 0;
5651 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5652 /* user specified, bail out if channel not found */
5653 nla_for_each_nested(attr,
5654 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5655 tmp) {
5656 struct ieee80211_channel *chan;
5657
5658 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5659
5660 if (!chan) {
5661 err = -EINVAL;
5662 goto out_free;
5663 }
5664
5665 /* ignore disabled channels */
5666 if (chan->flags & IEEE80211_CHAN_DISABLED)
5667 continue;
5668
5669 request->channels[i] = chan;
5670 i++;
5671 }
5672 } else {
5673 /* all channels */
5674 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5675 int j;
5676 if (!wiphy->bands[band])
5677 continue;
5678 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5679 struct ieee80211_channel *chan;
5680
5681 chan = &wiphy->bands[band]->channels[j];
5682
5683 if (chan->flags & IEEE80211_CHAN_DISABLED)
5684 continue;
5685
5686 request->channels[i] = chan;
5687 i++;
5688 }
5689 }
5690 }
5691
5692 if (!i) {
5693 err = -EINVAL;
5694 goto out_free;
5695 }
5696
5697 request->n_channels = i;
5698
5699 i = 0;
5700 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5701 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5702 tmp) {
5703 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5704 err = -EINVAL;
5705 goto out_free;
5706 }
5707 request->ssids[i].ssid_len = nla_len(attr);
5708 memcpy(request->ssids[i].ssid, nla_data(attr),
5709 nla_len(attr));
5710 i++;
5711 }
5712 }
5713
5714 i = 0;
5715 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5716 nla_for_each_nested(attr,
5717 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5718 tmp) {
5719 struct nlattr *ssid, *rssi;
5720
5721 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5722 nla_data(attr), nla_len(attr),
5723 nl80211_match_policy);
5724 if (err)
5725 goto out_free;
5726 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5727 if (ssid) {
5728 if (WARN_ON(i >= n_match_sets)) {
5729 /* this indicates a programming error,
5730 * the loop above should have verified
5731 * things properly
5732 */
5733 err = -EINVAL;
5734 goto out_free;
5735 }
5736
5737 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5738 err = -EINVAL;
5739 goto out_free;
5740 }
5741 memcpy(request->match_sets[i].ssid.ssid,
5742 nla_data(ssid), nla_len(ssid));
5743 request->match_sets[i].ssid.ssid_len =
5744 nla_len(ssid);
5745 /* special attribute - old implemenation w/a */
5746 request->match_sets[i].rssi_thold =
5747 default_match_rssi;
5748 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5749 if (rssi)
5750 request->match_sets[i].rssi_thold =
5751 nla_get_s32(rssi);
5752 }
5753 i++;
5754 }
5755
5756 /* there was no other matchset, so the RSSI one is alone */
5757 if (i == 0)
5758 request->match_sets[0].rssi_thold = default_match_rssi;
5759
5760 request->min_rssi_thold = INT_MAX;
5761 for (i = 0; i < n_match_sets; i++)
5762 request->min_rssi_thold =
5763 min(request->match_sets[i].rssi_thold,
5764 request->min_rssi_thold);
5765 } else {
5766 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5767 }
5768
5769 if (ie_len) {
5770 request->ie_len = ie_len;
5771 memcpy((void *)request->ie,
5772 nla_data(info->attrs[NL80211_ATTR_IE]),
5773 request->ie_len);
5774 }
5775
5776 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5777 request->flags = nla_get_u32(
5778 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5779 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5780 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5781 err = -EOPNOTSUPP;
5782 goto out_free;
5783 }
5784 }
5785
5786 request->dev = dev;
5787 request->wiphy = &rdev->wiphy;
5788 request->interval = interval;
5789 request->scan_start = jiffies;
5790
5791 err = rdev_sched_scan_start(rdev, dev, request);
5792 if (!err) {
5793 rdev->sched_scan_req = request;
5794 nl80211_send_sched_scan(rdev, dev,
5795 NL80211_CMD_START_SCHED_SCAN);
5796 goto out;
5797 }
5798
5799 out_free:
5800 kfree(request);
5801 out:
5802 return err;
5803 }
5804
5805 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5806 struct genl_info *info)
5807 {
5808 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5809
5810 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5811 !rdev->ops->sched_scan_stop)
5812 return -EOPNOTSUPP;
5813
5814 return __cfg80211_stop_sched_scan(rdev, false);
5815 }
5816
5817 static int nl80211_start_radar_detection(struct sk_buff *skb,
5818 struct genl_info *info)
5819 {
5820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5821 struct net_device *dev = info->user_ptr[1];
5822 struct wireless_dev *wdev = dev->ieee80211_ptr;
5823 struct cfg80211_chan_def chandef;
5824 enum nl80211_dfs_regions dfs_region;
5825 unsigned int cac_time_ms;
5826 int err;
5827
5828 dfs_region = reg_get_dfs_region(wdev->wiphy);
5829 if (dfs_region == NL80211_DFS_UNSET)
5830 return -EINVAL;
5831
5832 err = nl80211_parse_chandef(rdev, info, &chandef);
5833 if (err)
5834 return err;
5835
5836 if (netif_carrier_ok(dev))
5837 return -EBUSY;
5838
5839 if (wdev->cac_started)
5840 return -EBUSY;
5841
5842 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
5843 wdev->iftype);
5844 if (err < 0)
5845 return err;
5846
5847 if (err == 0)
5848 return -EINVAL;
5849
5850 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5851 return -EINVAL;
5852
5853 if (!rdev->ops->start_radar_detection)
5854 return -EOPNOTSUPP;
5855
5856 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
5857 if (WARN_ON(!cac_time_ms))
5858 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
5859
5860 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
5861 cac_time_ms);
5862 if (!err) {
5863 wdev->chandef = chandef;
5864 wdev->cac_started = true;
5865 wdev->cac_start_time = jiffies;
5866 wdev->cac_time_ms = cac_time_ms;
5867 }
5868 return err;
5869 }
5870
5871 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5872 {
5873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5874 struct net_device *dev = info->user_ptr[1];
5875 struct wireless_dev *wdev = dev->ieee80211_ptr;
5876 struct cfg80211_csa_settings params;
5877 /* csa_attrs is defined static to avoid waste of stack size - this
5878 * function is called under RTNL lock, so this should not be a problem.
5879 */
5880 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5881 u8 radar_detect_width = 0;
5882 int err;
5883 bool need_new_beacon = false;
5884 int len, i;
5885
5886 if (!rdev->ops->channel_switch ||
5887 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5888 return -EOPNOTSUPP;
5889
5890 switch (dev->ieee80211_ptr->iftype) {
5891 case NL80211_IFTYPE_AP:
5892 case NL80211_IFTYPE_P2P_GO:
5893 need_new_beacon = true;
5894
5895 /* useless if AP is not running */
5896 if (!wdev->beacon_interval)
5897 return -ENOTCONN;
5898 break;
5899 case NL80211_IFTYPE_ADHOC:
5900 if (!wdev->ssid_len)
5901 return -ENOTCONN;
5902 break;
5903 case NL80211_IFTYPE_MESH_POINT:
5904 if (!wdev->mesh_id_len)
5905 return -ENOTCONN;
5906 break;
5907 default:
5908 return -EOPNOTSUPP;
5909 }
5910
5911 memset(&params, 0, sizeof(params));
5912
5913 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5914 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5915 return -EINVAL;
5916
5917 /* only important for AP, IBSS and mesh create IEs internally */
5918 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5919 return -EINVAL;
5920
5921 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5922
5923 if (!need_new_beacon)
5924 goto skip_beacons;
5925
5926 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5927 if (err)
5928 return err;
5929
5930 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5931 info->attrs[NL80211_ATTR_CSA_IES],
5932 nl80211_policy);
5933 if (err)
5934 return err;
5935
5936 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5937 if (err)
5938 return err;
5939
5940 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5941 return -EINVAL;
5942
5943 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5944 if (!len || (len % sizeof(u16)))
5945 return -EINVAL;
5946
5947 params.n_counter_offsets_beacon = len / sizeof(u16);
5948 if (rdev->wiphy.max_num_csa_counters &&
5949 (params.n_counter_offsets_beacon >
5950 rdev->wiphy.max_num_csa_counters))
5951 return -EINVAL;
5952
5953 params.counter_offsets_beacon =
5954 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5955
5956 /* sanity checks - counters should fit and be the same */
5957 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
5958 u16 offset = params.counter_offsets_beacon[i];
5959
5960 if (offset >= params.beacon_csa.tail_len)
5961 return -EINVAL;
5962
5963 if (params.beacon_csa.tail[offset] != params.count)
5964 return -EINVAL;
5965 }
5966
5967 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5968 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5969 if (!len || (len % sizeof(u16)))
5970 return -EINVAL;
5971
5972 params.n_counter_offsets_presp = len / sizeof(u16);
5973 if (rdev->wiphy.max_num_csa_counters &&
5974 (params.n_counter_offsets_beacon >
5975 rdev->wiphy.max_num_csa_counters))
5976 return -EINVAL;
5977
5978 params.counter_offsets_presp =
5979 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5980
5981 /* sanity checks - counters should fit and be the same */
5982 for (i = 0; i < params.n_counter_offsets_presp; i++) {
5983 u16 offset = params.counter_offsets_presp[i];
5984
5985 if (offset >= params.beacon_csa.probe_resp_len)
5986 return -EINVAL;
5987
5988 if (params.beacon_csa.probe_resp[offset] !=
5989 params.count)
5990 return -EINVAL;
5991 }
5992 }
5993
5994 skip_beacons:
5995 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5996 if (err)
5997 return err;
5998
5999 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6000 wdev->iftype))
6001 return -EINVAL;
6002
6003 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6004 &params.chandef,
6005 wdev->iftype);
6006 if (err < 0)
6007 return err;
6008
6009 if (err > 0) {
6010 radar_detect_width = BIT(params.chandef.width);
6011 params.radar_required = true;
6012 }
6013
6014 /* TODO: I left this here for now. With channel switch, the
6015 * verification is a bit more complicated, because we only do
6016 * it later when the channel switch really happens.
6017 */
6018 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
6019 params.chandef.chan,
6020 CHAN_MODE_SHARED,
6021 radar_detect_width);
6022 if (err)
6023 return err;
6024
6025 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6026 params.block_tx = true;
6027
6028 wdev_lock(wdev);
6029 err = rdev_channel_switch(rdev, dev, &params);
6030 wdev_unlock(wdev);
6031
6032 return err;
6033 }
6034
6035 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6036 u32 seq, int flags,
6037 struct cfg80211_registered_device *rdev,
6038 struct wireless_dev *wdev,
6039 struct cfg80211_internal_bss *intbss)
6040 {
6041 struct cfg80211_bss *res = &intbss->pub;
6042 const struct cfg80211_bss_ies *ies;
6043 void *hdr;
6044 struct nlattr *bss;
6045 bool tsf = false;
6046
6047 ASSERT_WDEV_LOCK(wdev);
6048
6049 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6050 NL80211_CMD_NEW_SCAN_RESULTS);
6051 if (!hdr)
6052 return -1;
6053
6054 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6055
6056 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6057 goto nla_put_failure;
6058 if (wdev->netdev &&
6059 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6060 goto nla_put_failure;
6061 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6062 goto nla_put_failure;
6063
6064 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6065 if (!bss)
6066 goto nla_put_failure;
6067 if ((!is_zero_ether_addr(res->bssid) &&
6068 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6069 goto nla_put_failure;
6070
6071 rcu_read_lock();
6072 ies = rcu_dereference(res->ies);
6073 if (ies) {
6074 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6075 goto fail_unlock_rcu;
6076 tsf = true;
6077 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6078 ies->len, ies->data))
6079 goto fail_unlock_rcu;
6080 }
6081 ies = rcu_dereference(res->beacon_ies);
6082 if (ies) {
6083 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6084 goto fail_unlock_rcu;
6085 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6086 ies->len, ies->data))
6087 goto fail_unlock_rcu;
6088 }
6089 rcu_read_unlock();
6090
6091 if (res->beacon_interval &&
6092 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6093 goto nla_put_failure;
6094 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6095 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6096 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6097 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6098 jiffies_to_msecs(jiffies - intbss->ts)))
6099 goto nla_put_failure;
6100
6101 switch (rdev->wiphy.signal_type) {
6102 case CFG80211_SIGNAL_TYPE_MBM:
6103 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6104 goto nla_put_failure;
6105 break;
6106 case CFG80211_SIGNAL_TYPE_UNSPEC:
6107 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6108 goto nla_put_failure;
6109 break;
6110 default:
6111 break;
6112 }
6113
6114 switch (wdev->iftype) {
6115 case NL80211_IFTYPE_P2P_CLIENT:
6116 case NL80211_IFTYPE_STATION:
6117 if (intbss == wdev->current_bss &&
6118 nla_put_u32(msg, NL80211_BSS_STATUS,
6119 NL80211_BSS_STATUS_ASSOCIATED))
6120 goto nla_put_failure;
6121 break;
6122 case NL80211_IFTYPE_ADHOC:
6123 if (intbss == wdev->current_bss &&
6124 nla_put_u32(msg, NL80211_BSS_STATUS,
6125 NL80211_BSS_STATUS_IBSS_JOINED))
6126 goto nla_put_failure;
6127 break;
6128 default:
6129 break;
6130 }
6131
6132 nla_nest_end(msg, bss);
6133
6134 return genlmsg_end(msg, hdr);
6135
6136 fail_unlock_rcu:
6137 rcu_read_unlock();
6138 nla_put_failure:
6139 genlmsg_cancel(msg, hdr);
6140 return -EMSGSIZE;
6141 }
6142
6143 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6144 {
6145 struct cfg80211_registered_device *rdev;
6146 struct cfg80211_internal_bss *scan;
6147 struct wireless_dev *wdev;
6148 int start = cb->args[2], idx = 0;
6149 int err;
6150
6151 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6152 if (err)
6153 return err;
6154
6155 wdev_lock(wdev);
6156 spin_lock_bh(&rdev->bss_lock);
6157 cfg80211_bss_expire(rdev);
6158
6159 cb->seq = rdev->bss_generation;
6160
6161 list_for_each_entry(scan, &rdev->bss_list, list) {
6162 if (++idx <= start)
6163 continue;
6164 if (nl80211_send_bss(skb, cb,
6165 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6166 rdev, wdev, scan) < 0) {
6167 idx--;
6168 break;
6169 }
6170 }
6171
6172 spin_unlock_bh(&rdev->bss_lock);
6173 wdev_unlock(wdev);
6174
6175 cb->args[2] = idx;
6176 nl80211_finish_wdev_dump(rdev);
6177
6178 return skb->len;
6179 }
6180
6181 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6182 int flags, struct net_device *dev,
6183 struct survey_info *survey)
6184 {
6185 void *hdr;
6186 struct nlattr *infoattr;
6187
6188 hdr = nl80211hdr_put(msg, portid, seq, flags,
6189 NL80211_CMD_NEW_SURVEY_RESULTS);
6190 if (!hdr)
6191 return -ENOMEM;
6192
6193 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6194 goto nla_put_failure;
6195
6196 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6197 if (!infoattr)
6198 goto nla_put_failure;
6199
6200 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6201 survey->channel->center_freq))
6202 goto nla_put_failure;
6203
6204 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6205 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6206 goto nla_put_failure;
6207 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6208 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6209 goto nla_put_failure;
6210 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6211 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6212 survey->channel_time))
6213 goto nla_put_failure;
6214 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6215 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6216 survey->channel_time_busy))
6217 goto nla_put_failure;
6218 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6219 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6220 survey->channel_time_ext_busy))
6221 goto nla_put_failure;
6222 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6223 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6224 survey->channel_time_rx))
6225 goto nla_put_failure;
6226 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6227 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6228 survey->channel_time_tx))
6229 goto nla_put_failure;
6230
6231 nla_nest_end(msg, infoattr);
6232
6233 return genlmsg_end(msg, hdr);
6234
6235 nla_put_failure:
6236 genlmsg_cancel(msg, hdr);
6237 return -EMSGSIZE;
6238 }
6239
6240 static int nl80211_dump_survey(struct sk_buff *skb,
6241 struct netlink_callback *cb)
6242 {
6243 struct survey_info survey;
6244 struct cfg80211_registered_device *rdev;
6245 struct wireless_dev *wdev;
6246 int survey_idx = cb->args[2];
6247 int res;
6248
6249 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6250 if (res)
6251 return res;
6252
6253 if (!wdev->netdev) {
6254 res = -EINVAL;
6255 goto out_err;
6256 }
6257
6258 if (!rdev->ops->dump_survey) {
6259 res = -EOPNOTSUPP;
6260 goto out_err;
6261 }
6262
6263 while (1) {
6264 struct ieee80211_channel *chan;
6265
6266 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6267 if (res == -ENOENT)
6268 break;
6269 if (res)
6270 goto out_err;
6271
6272 /* Survey without a channel doesn't make sense */
6273 if (!survey.channel) {
6274 res = -EINVAL;
6275 goto out;
6276 }
6277
6278 chan = ieee80211_get_channel(&rdev->wiphy,
6279 survey.channel->center_freq);
6280 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6281 survey_idx++;
6282 continue;
6283 }
6284
6285 if (nl80211_send_survey(skb,
6286 NETLINK_CB(cb->skb).portid,
6287 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6288 wdev->netdev, &survey) < 0)
6289 goto out;
6290 survey_idx++;
6291 }
6292
6293 out:
6294 cb->args[2] = survey_idx;
6295 res = skb->len;
6296 out_err:
6297 nl80211_finish_wdev_dump(rdev);
6298 return res;
6299 }
6300
6301 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6302 {
6303 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6304 NL80211_WPA_VERSION_2));
6305 }
6306
6307 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6308 {
6309 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6310 struct net_device *dev = info->user_ptr[1];
6311 struct ieee80211_channel *chan;
6312 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6313 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6314 enum nl80211_auth_type auth_type;
6315 struct key_parse key;
6316 bool local_state_change;
6317
6318 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6319 return -EINVAL;
6320
6321 if (!info->attrs[NL80211_ATTR_MAC])
6322 return -EINVAL;
6323
6324 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6325 return -EINVAL;
6326
6327 if (!info->attrs[NL80211_ATTR_SSID])
6328 return -EINVAL;
6329
6330 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6331 return -EINVAL;
6332
6333 err = nl80211_parse_key(info, &key);
6334 if (err)
6335 return err;
6336
6337 if (key.idx >= 0) {
6338 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6339 return -EINVAL;
6340 if (!key.p.key || !key.p.key_len)
6341 return -EINVAL;
6342 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6343 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6344 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6345 key.p.key_len != WLAN_KEY_LEN_WEP104))
6346 return -EINVAL;
6347 if (key.idx > 4)
6348 return -EINVAL;
6349 } else {
6350 key.p.key_len = 0;
6351 key.p.key = NULL;
6352 }
6353
6354 if (key.idx >= 0) {
6355 int i;
6356 bool ok = false;
6357 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6358 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6359 ok = true;
6360 break;
6361 }
6362 }
6363 if (!ok)
6364 return -EINVAL;
6365 }
6366
6367 if (!rdev->ops->auth)
6368 return -EOPNOTSUPP;
6369
6370 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6371 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6372 return -EOPNOTSUPP;
6373
6374 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6375 chan = nl80211_get_valid_chan(&rdev->wiphy,
6376 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6377 if (!chan)
6378 return -EINVAL;
6379
6380 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6381 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6382
6383 if (info->attrs[NL80211_ATTR_IE]) {
6384 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6385 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6386 }
6387
6388 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6389 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6390 return -EINVAL;
6391
6392 if (auth_type == NL80211_AUTHTYPE_SAE &&
6393 !info->attrs[NL80211_ATTR_SAE_DATA])
6394 return -EINVAL;
6395
6396 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6397 if (auth_type != NL80211_AUTHTYPE_SAE)
6398 return -EINVAL;
6399 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6400 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6401 /* need to include at least Auth Transaction and Status Code */
6402 if (sae_data_len < 4)
6403 return -EINVAL;
6404 }
6405
6406 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6407
6408 /*
6409 * Since we no longer track auth state, ignore
6410 * requests to only change local state.
6411 */
6412 if (local_state_change)
6413 return 0;
6414
6415 wdev_lock(dev->ieee80211_ptr);
6416 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6417 ssid, ssid_len, ie, ie_len,
6418 key.p.key, key.p.key_len, key.idx,
6419 sae_data, sae_data_len);
6420 wdev_unlock(dev->ieee80211_ptr);
6421 return err;
6422 }
6423
6424 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6425 struct genl_info *info,
6426 struct cfg80211_crypto_settings *settings,
6427 int cipher_limit)
6428 {
6429 memset(settings, 0, sizeof(*settings));
6430
6431 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6432
6433 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6434 u16 proto;
6435 proto = nla_get_u16(
6436 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6437 settings->control_port_ethertype = cpu_to_be16(proto);
6438 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6439 proto != ETH_P_PAE)
6440 return -EINVAL;
6441 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6442 settings->control_port_no_encrypt = true;
6443 } else
6444 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6445
6446 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6447 void *data;
6448 int len, i;
6449
6450 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6451 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6452 settings->n_ciphers_pairwise = len / sizeof(u32);
6453
6454 if (len % sizeof(u32))
6455 return -EINVAL;
6456
6457 if (settings->n_ciphers_pairwise > cipher_limit)
6458 return -EINVAL;
6459
6460 memcpy(settings->ciphers_pairwise, data, len);
6461
6462 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6463 if (!cfg80211_supported_cipher_suite(
6464 &rdev->wiphy,
6465 settings->ciphers_pairwise[i]))
6466 return -EINVAL;
6467 }
6468
6469 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6470 settings->cipher_group =
6471 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6472 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6473 settings->cipher_group))
6474 return -EINVAL;
6475 }
6476
6477 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6478 settings->wpa_versions =
6479 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6480 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6481 return -EINVAL;
6482 }
6483
6484 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6485 void *data;
6486 int len;
6487
6488 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6489 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6490 settings->n_akm_suites = len / sizeof(u32);
6491
6492 if (len % sizeof(u32))
6493 return -EINVAL;
6494
6495 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6496 return -EINVAL;
6497
6498 memcpy(settings->akm_suites, data, len);
6499 }
6500
6501 return 0;
6502 }
6503
6504 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6505 {
6506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6507 struct net_device *dev = info->user_ptr[1];
6508 struct ieee80211_channel *chan;
6509 struct cfg80211_assoc_request req = {};
6510 const u8 *bssid, *ssid;
6511 int err, ssid_len = 0;
6512
6513 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6514 return -EINVAL;
6515
6516 if (!info->attrs[NL80211_ATTR_MAC] ||
6517 !info->attrs[NL80211_ATTR_SSID] ||
6518 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6519 return -EINVAL;
6520
6521 if (!rdev->ops->assoc)
6522 return -EOPNOTSUPP;
6523
6524 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6525 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6526 return -EOPNOTSUPP;
6527
6528 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6529
6530 chan = nl80211_get_valid_chan(&rdev->wiphy,
6531 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6532 if (!chan)
6533 return -EINVAL;
6534
6535 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6536 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6537
6538 if (info->attrs[NL80211_ATTR_IE]) {
6539 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6540 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6541 }
6542
6543 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6544 enum nl80211_mfp mfp =
6545 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6546 if (mfp == NL80211_MFP_REQUIRED)
6547 req.use_mfp = true;
6548 else if (mfp != NL80211_MFP_NO)
6549 return -EINVAL;
6550 }
6551
6552 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6553 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6554
6555 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6556 req.flags |= ASSOC_REQ_DISABLE_HT;
6557
6558 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6559 memcpy(&req.ht_capa_mask,
6560 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6561 sizeof(req.ht_capa_mask));
6562
6563 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6564 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6565 return -EINVAL;
6566 memcpy(&req.ht_capa,
6567 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6568 sizeof(req.ht_capa));
6569 }
6570
6571 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6572 req.flags |= ASSOC_REQ_DISABLE_VHT;
6573
6574 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6575 memcpy(&req.vht_capa_mask,
6576 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6577 sizeof(req.vht_capa_mask));
6578
6579 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6580 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6581 return -EINVAL;
6582 memcpy(&req.vht_capa,
6583 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6584 sizeof(req.vht_capa));
6585 }
6586
6587 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6588 if (!err) {
6589 wdev_lock(dev->ieee80211_ptr);
6590 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6591 ssid, ssid_len, &req);
6592 wdev_unlock(dev->ieee80211_ptr);
6593 }
6594
6595 return err;
6596 }
6597
6598 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6599 {
6600 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6601 struct net_device *dev = info->user_ptr[1];
6602 const u8 *ie = NULL, *bssid;
6603 int ie_len = 0, err;
6604 u16 reason_code;
6605 bool local_state_change;
6606
6607 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6608 return -EINVAL;
6609
6610 if (!info->attrs[NL80211_ATTR_MAC])
6611 return -EINVAL;
6612
6613 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6614 return -EINVAL;
6615
6616 if (!rdev->ops->deauth)
6617 return -EOPNOTSUPP;
6618
6619 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6620 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6621 return -EOPNOTSUPP;
6622
6623 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6624
6625 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6626 if (reason_code == 0) {
6627 /* Reason Code 0 is reserved */
6628 return -EINVAL;
6629 }
6630
6631 if (info->attrs[NL80211_ATTR_IE]) {
6632 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6633 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6634 }
6635
6636 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6637
6638 wdev_lock(dev->ieee80211_ptr);
6639 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6640 local_state_change);
6641 wdev_unlock(dev->ieee80211_ptr);
6642 return err;
6643 }
6644
6645 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6646 {
6647 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6648 struct net_device *dev = info->user_ptr[1];
6649 const u8 *ie = NULL, *bssid;
6650 int ie_len = 0, err;
6651 u16 reason_code;
6652 bool local_state_change;
6653
6654 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6655 return -EINVAL;
6656
6657 if (!info->attrs[NL80211_ATTR_MAC])
6658 return -EINVAL;
6659
6660 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6661 return -EINVAL;
6662
6663 if (!rdev->ops->disassoc)
6664 return -EOPNOTSUPP;
6665
6666 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6667 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6668 return -EOPNOTSUPP;
6669
6670 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6671
6672 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6673 if (reason_code == 0) {
6674 /* Reason Code 0 is reserved */
6675 return -EINVAL;
6676 }
6677
6678 if (info->attrs[NL80211_ATTR_IE]) {
6679 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6680 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6681 }
6682
6683 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6684
6685 wdev_lock(dev->ieee80211_ptr);
6686 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6687 local_state_change);
6688 wdev_unlock(dev->ieee80211_ptr);
6689 return err;
6690 }
6691
6692 static bool
6693 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6694 int mcast_rate[IEEE80211_NUM_BANDS],
6695 int rateval)
6696 {
6697 struct wiphy *wiphy = &rdev->wiphy;
6698 bool found = false;
6699 int band, i;
6700
6701 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6702 struct ieee80211_supported_band *sband;
6703
6704 sband = wiphy->bands[band];
6705 if (!sband)
6706 continue;
6707
6708 for (i = 0; i < sband->n_bitrates; i++) {
6709 if (sband->bitrates[i].bitrate == rateval) {
6710 mcast_rate[band] = i + 1;
6711 found = true;
6712 break;
6713 }
6714 }
6715 }
6716
6717 return found;
6718 }
6719
6720 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6721 {
6722 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6723 struct net_device *dev = info->user_ptr[1];
6724 struct cfg80211_ibss_params ibss;
6725 struct wiphy *wiphy;
6726 struct cfg80211_cached_keys *connkeys = NULL;
6727 int err;
6728
6729 memset(&ibss, 0, sizeof(ibss));
6730
6731 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6732 return -EINVAL;
6733
6734 if (!info->attrs[NL80211_ATTR_SSID] ||
6735 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6736 return -EINVAL;
6737
6738 ibss.beacon_interval = 100;
6739
6740 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6741 ibss.beacon_interval =
6742 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6743 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6744 return -EINVAL;
6745 }
6746
6747 if (!rdev->ops->join_ibss)
6748 return -EOPNOTSUPP;
6749
6750 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6751 return -EOPNOTSUPP;
6752
6753 wiphy = &rdev->wiphy;
6754
6755 if (info->attrs[NL80211_ATTR_MAC]) {
6756 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6757
6758 if (!is_valid_ether_addr(ibss.bssid))
6759 return -EINVAL;
6760 }
6761 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6762 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6763
6764 if (info->attrs[NL80211_ATTR_IE]) {
6765 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6766 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6767 }
6768
6769 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6770 if (err)
6771 return err;
6772
6773 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6774 NL80211_IFTYPE_ADHOC))
6775 return -EINVAL;
6776
6777 switch (ibss.chandef.width) {
6778 case NL80211_CHAN_WIDTH_5:
6779 case NL80211_CHAN_WIDTH_10:
6780 case NL80211_CHAN_WIDTH_20_NOHT:
6781 break;
6782 case NL80211_CHAN_WIDTH_20:
6783 case NL80211_CHAN_WIDTH_40:
6784 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6785 break;
6786 default:
6787 return -EINVAL;
6788 }
6789
6790 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6791 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6792
6793 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6794 u8 *rates =
6795 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6796 int n_rates =
6797 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6798 struct ieee80211_supported_band *sband =
6799 wiphy->bands[ibss.chandef.chan->band];
6800
6801 err = ieee80211_get_ratemask(sband, rates, n_rates,
6802 &ibss.basic_rates);
6803 if (err)
6804 return err;
6805 }
6806
6807 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6808 memcpy(&ibss.ht_capa_mask,
6809 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6810 sizeof(ibss.ht_capa_mask));
6811
6812 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6813 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6814 return -EINVAL;
6815 memcpy(&ibss.ht_capa,
6816 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6817 sizeof(ibss.ht_capa));
6818 }
6819
6820 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6821 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6822 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6823 return -EINVAL;
6824
6825 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6826 bool no_ht = false;
6827
6828 connkeys = nl80211_parse_connkeys(rdev,
6829 info->attrs[NL80211_ATTR_KEYS],
6830 &no_ht);
6831 if (IS_ERR(connkeys))
6832 return PTR_ERR(connkeys);
6833
6834 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6835 no_ht) {
6836 kfree(connkeys);
6837 return -EINVAL;
6838 }
6839 }
6840
6841 ibss.control_port =
6842 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6843
6844 ibss.userspace_handles_dfs =
6845 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6846
6847 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6848 if (err)
6849 kfree(connkeys);
6850 return err;
6851 }
6852
6853 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6854 {
6855 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6856 struct net_device *dev = info->user_ptr[1];
6857
6858 if (!rdev->ops->leave_ibss)
6859 return -EOPNOTSUPP;
6860
6861 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6862 return -EOPNOTSUPP;
6863
6864 return cfg80211_leave_ibss(rdev, dev, false);
6865 }
6866
6867 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6868 {
6869 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6870 struct net_device *dev = info->user_ptr[1];
6871 int mcast_rate[IEEE80211_NUM_BANDS];
6872 u32 nla_rate;
6873 int err;
6874
6875 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6876 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6877 return -EOPNOTSUPP;
6878
6879 if (!rdev->ops->set_mcast_rate)
6880 return -EOPNOTSUPP;
6881
6882 memset(mcast_rate, 0, sizeof(mcast_rate));
6883
6884 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6885 return -EINVAL;
6886
6887 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6888 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6889 return -EINVAL;
6890
6891 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6892
6893 return err;
6894 }
6895
6896 static struct sk_buff *
6897 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6898 int approxlen, u32 portid, u32 seq,
6899 enum nl80211_commands cmd,
6900 enum nl80211_attrs attr,
6901 const struct nl80211_vendor_cmd_info *info,
6902 gfp_t gfp)
6903 {
6904 struct sk_buff *skb;
6905 void *hdr;
6906 struct nlattr *data;
6907
6908 skb = nlmsg_new(approxlen + 100, gfp);
6909 if (!skb)
6910 return NULL;
6911
6912 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6913 if (!hdr) {
6914 kfree_skb(skb);
6915 return NULL;
6916 }
6917
6918 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6919 goto nla_put_failure;
6920
6921 if (info) {
6922 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6923 info->vendor_id))
6924 goto nla_put_failure;
6925 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6926 info->subcmd))
6927 goto nla_put_failure;
6928 }
6929
6930 data = nla_nest_start(skb, attr);
6931
6932 ((void **)skb->cb)[0] = rdev;
6933 ((void **)skb->cb)[1] = hdr;
6934 ((void **)skb->cb)[2] = data;
6935
6936 return skb;
6937
6938 nla_put_failure:
6939 kfree_skb(skb);
6940 return NULL;
6941 }
6942
6943 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6944 enum nl80211_commands cmd,
6945 enum nl80211_attrs attr,
6946 int vendor_event_idx,
6947 int approxlen, gfp_t gfp)
6948 {
6949 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
6950 const struct nl80211_vendor_cmd_info *info;
6951
6952 switch (cmd) {
6953 case NL80211_CMD_TESTMODE:
6954 if (WARN_ON(vendor_event_idx != -1))
6955 return NULL;
6956 info = NULL;
6957 break;
6958 case NL80211_CMD_VENDOR:
6959 if (WARN_ON(vendor_event_idx < 0 ||
6960 vendor_event_idx >= wiphy->n_vendor_events))
6961 return NULL;
6962 info = &wiphy->vendor_events[vendor_event_idx];
6963 break;
6964 default:
6965 WARN_ON(1);
6966 return NULL;
6967 }
6968
6969 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
6970 cmd, attr, info, gfp);
6971 }
6972 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
6973
6974 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
6975 {
6976 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6977 void *hdr = ((void **)skb->cb)[1];
6978 struct nlattr *data = ((void **)skb->cb)[2];
6979 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
6980
6981 nla_nest_end(skb, data);
6982 genlmsg_end(skb, hdr);
6983
6984 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
6985 mcgrp = NL80211_MCGRP_VENDOR;
6986
6987 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
6988 mcgrp, gfp);
6989 }
6990 EXPORT_SYMBOL(__cfg80211_send_event_skb);
6991
6992 #ifdef CONFIG_NL80211_TESTMODE
6993 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6994 {
6995 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6996 struct wireless_dev *wdev =
6997 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6998 int err;
6999
7000 if (!rdev->ops->testmode_cmd)
7001 return -EOPNOTSUPP;
7002
7003 if (IS_ERR(wdev)) {
7004 err = PTR_ERR(wdev);
7005 if (err != -EINVAL)
7006 return err;
7007 wdev = NULL;
7008 } else if (wdev->wiphy != &rdev->wiphy) {
7009 return -EINVAL;
7010 }
7011
7012 if (!info->attrs[NL80211_ATTR_TESTDATA])
7013 return -EINVAL;
7014
7015 rdev->cur_cmd_info = info;
7016 err = rdev_testmode_cmd(rdev, wdev,
7017 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7018 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7019 rdev->cur_cmd_info = NULL;
7020
7021 return err;
7022 }
7023
7024 static int nl80211_testmode_dump(struct sk_buff *skb,
7025 struct netlink_callback *cb)
7026 {
7027 struct cfg80211_registered_device *rdev;
7028 int err;
7029 long phy_idx;
7030 void *data = NULL;
7031 int data_len = 0;
7032
7033 rtnl_lock();
7034
7035 if (cb->args[0]) {
7036 /*
7037 * 0 is a valid index, but not valid for args[0],
7038 * so we need to offset by 1.
7039 */
7040 phy_idx = cb->args[0] - 1;
7041 } else {
7042 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7043 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7044 nl80211_policy);
7045 if (err)
7046 goto out_err;
7047
7048 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7049 nl80211_fam.attrbuf);
7050 if (IS_ERR(rdev)) {
7051 err = PTR_ERR(rdev);
7052 goto out_err;
7053 }
7054 phy_idx = rdev->wiphy_idx;
7055 rdev = NULL;
7056
7057 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7058 cb->args[1] =
7059 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7060 }
7061
7062 if (cb->args[1]) {
7063 data = nla_data((void *)cb->args[1]);
7064 data_len = nla_len((void *)cb->args[1]);
7065 }
7066
7067 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7068 if (!rdev) {
7069 err = -ENOENT;
7070 goto out_err;
7071 }
7072
7073 if (!rdev->ops->testmode_dump) {
7074 err = -EOPNOTSUPP;
7075 goto out_err;
7076 }
7077
7078 while (1) {
7079 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7080 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7081 NL80211_CMD_TESTMODE);
7082 struct nlattr *tmdata;
7083
7084 if (!hdr)
7085 break;
7086
7087 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7088 genlmsg_cancel(skb, hdr);
7089 break;
7090 }
7091
7092 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7093 if (!tmdata) {
7094 genlmsg_cancel(skb, hdr);
7095 break;
7096 }
7097 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7098 nla_nest_end(skb, tmdata);
7099
7100 if (err == -ENOBUFS || err == -ENOENT) {
7101 genlmsg_cancel(skb, hdr);
7102 break;
7103 } else if (err) {
7104 genlmsg_cancel(skb, hdr);
7105 goto out_err;
7106 }
7107
7108 genlmsg_end(skb, hdr);
7109 }
7110
7111 err = skb->len;
7112 /* see above */
7113 cb->args[0] = phy_idx + 1;
7114 out_err:
7115 rtnl_unlock();
7116 return err;
7117 }
7118 #endif
7119
7120 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7121 {
7122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7123 struct net_device *dev = info->user_ptr[1];
7124 struct cfg80211_connect_params connect;
7125 struct wiphy *wiphy;
7126 struct cfg80211_cached_keys *connkeys = NULL;
7127 int err;
7128
7129 memset(&connect, 0, sizeof(connect));
7130
7131 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7132 return -EINVAL;
7133
7134 if (!info->attrs[NL80211_ATTR_SSID] ||
7135 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7136 return -EINVAL;
7137
7138 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7139 connect.auth_type =
7140 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7141 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7142 NL80211_CMD_CONNECT))
7143 return -EINVAL;
7144 } else
7145 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7146
7147 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7148
7149 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7150 NL80211_MAX_NR_CIPHER_SUITES);
7151 if (err)
7152 return err;
7153
7154 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7155 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7156 return -EOPNOTSUPP;
7157
7158 wiphy = &rdev->wiphy;
7159
7160 connect.bg_scan_period = -1;
7161 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7162 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7163 connect.bg_scan_period =
7164 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7165 }
7166
7167 if (info->attrs[NL80211_ATTR_MAC])
7168 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7169 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7170 connect.bssid_hint =
7171 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7172 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7173 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7174
7175 if (info->attrs[NL80211_ATTR_IE]) {
7176 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7177 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7178 }
7179
7180 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7181 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7182 if (connect.mfp != NL80211_MFP_REQUIRED &&
7183 connect.mfp != NL80211_MFP_NO)
7184 return -EINVAL;
7185 } else {
7186 connect.mfp = NL80211_MFP_NO;
7187 }
7188
7189 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7190 connect.channel = nl80211_get_valid_chan(
7191 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7192 if (!connect.channel)
7193 return -EINVAL;
7194 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7195 connect.channel_hint = nl80211_get_valid_chan(
7196 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7197 if (!connect.channel_hint)
7198 return -EINVAL;
7199 }
7200
7201 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7202 connkeys = nl80211_parse_connkeys(rdev,
7203 info->attrs[NL80211_ATTR_KEYS], NULL);
7204 if (IS_ERR(connkeys))
7205 return PTR_ERR(connkeys);
7206 }
7207
7208 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7209 connect.flags |= ASSOC_REQ_DISABLE_HT;
7210
7211 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7212 memcpy(&connect.ht_capa_mask,
7213 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7214 sizeof(connect.ht_capa_mask));
7215
7216 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7217 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7218 kfree(connkeys);
7219 return -EINVAL;
7220 }
7221 memcpy(&connect.ht_capa,
7222 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7223 sizeof(connect.ht_capa));
7224 }
7225
7226 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7227 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7228
7229 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7230 memcpy(&connect.vht_capa_mask,
7231 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7232 sizeof(connect.vht_capa_mask));
7233
7234 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7235 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7236 kfree(connkeys);
7237 return -EINVAL;
7238 }
7239 memcpy(&connect.vht_capa,
7240 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7241 sizeof(connect.vht_capa));
7242 }
7243
7244 wdev_lock(dev->ieee80211_ptr);
7245 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7246 wdev_unlock(dev->ieee80211_ptr);
7247 if (err)
7248 kfree(connkeys);
7249 return err;
7250 }
7251
7252 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7253 {
7254 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7255 struct net_device *dev = info->user_ptr[1];
7256 u16 reason;
7257 int ret;
7258
7259 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7260 reason = WLAN_REASON_DEAUTH_LEAVING;
7261 else
7262 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7263
7264 if (reason == 0)
7265 return -EINVAL;
7266
7267 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7268 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7269 return -EOPNOTSUPP;
7270
7271 wdev_lock(dev->ieee80211_ptr);
7272 ret = cfg80211_disconnect(rdev, dev, reason, true);
7273 wdev_unlock(dev->ieee80211_ptr);
7274 return ret;
7275 }
7276
7277 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7278 {
7279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7280 struct net *net;
7281 int err;
7282 u32 pid;
7283
7284 if (!info->attrs[NL80211_ATTR_PID])
7285 return -EINVAL;
7286
7287 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7288
7289 net = get_net_ns_by_pid(pid);
7290 if (IS_ERR(net))
7291 return PTR_ERR(net);
7292
7293 err = 0;
7294
7295 /* check if anything to do */
7296 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7297 err = cfg80211_switch_netns(rdev, net);
7298
7299 put_net(net);
7300 return err;
7301 }
7302
7303 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7304 {
7305 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7306 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7307 struct cfg80211_pmksa *pmksa) = NULL;
7308 struct net_device *dev = info->user_ptr[1];
7309 struct cfg80211_pmksa pmksa;
7310
7311 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7312
7313 if (!info->attrs[NL80211_ATTR_MAC])
7314 return -EINVAL;
7315
7316 if (!info->attrs[NL80211_ATTR_PMKID])
7317 return -EINVAL;
7318
7319 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7320 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7321
7322 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7323 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7324 return -EOPNOTSUPP;
7325
7326 switch (info->genlhdr->cmd) {
7327 case NL80211_CMD_SET_PMKSA:
7328 rdev_ops = rdev->ops->set_pmksa;
7329 break;
7330 case NL80211_CMD_DEL_PMKSA:
7331 rdev_ops = rdev->ops->del_pmksa;
7332 break;
7333 default:
7334 WARN_ON(1);
7335 break;
7336 }
7337
7338 if (!rdev_ops)
7339 return -EOPNOTSUPP;
7340
7341 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7342 }
7343
7344 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7345 {
7346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7347 struct net_device *dev = info->user_ptr[1];
7348
7349 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7350 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7351 return -EOPNOTSUPP;
7352
7353 if (!rdev->ops->flush_pmksa)
7354 return -EOPNOTSUPP;
7355
7356 return rdev_flush_pmksa(rdev, dev);
7357 }
7358
7359 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7360 {
7361 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7362 struct net_device *dev = info->user_ptr[1];
7363 u8 action_code, dialog_token;
7364 u32 peer_capability = 0;
7365 u16 status_code;
7366 u8 *peer;
7367
7368 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7369 !rdev->ops->tdls_mgmt)
7370 return -EOPNOTSUPP;
7371
7372 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7373 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7374 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7375 !info->attrs[NL80211_ATTR_IE] ||
7376 !info->attrs[NL80211_ATTR_MAC])
7377 return -EINVAL;
7378
7379 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7380 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7381 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7382 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7383 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7384 peer_capability =
7385 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7386
7387 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7388 dialog_token, status_code, peer_capability,
7389 nla_data(info->attrs[NL80211_ATTR_IE]),
7390 nla_len(info->attrs[NL80211_ATTR_IE]));
7391 }
7392
7393 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7394 {
7395 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7396 struct net_device *dev = info->user_ptr[1];
7397 enum nl80211_tdls_operation operation;
7398 u8 *peer;
7399
7400 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7401 !rdev->ops->tdls_oper)
7402 return -EOPNOTSUPP;
7403
7404 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7405 !info->attrs[NL80211_ATTR_MAC])
7406 return -EINVAL;
7407
7408 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7409 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7410
7411 return rdev_tdls_oper(rdev, dev, peer, operation);
7412 }
7413
7414 static int nl80211_remain_on_channel(struct sk_buff *skb,
7415 struct genl_info *info)
7416 {
7417 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7418 struct wireless_dev *wdev = info->user_ptr[1];
7419 struct cfg80211_chan_def chandef;
7420 struct sk_buff *msg;
7421 void *hdr;
7422 u64 cookie;
7423 u32 duration;
7424 int err;
7425
7426 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7427 !info->attrs[NL80211_ATTR_DURATION])
7428 return -EINVAL;
7429
7430 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7431
7432 if (!rdev->ops->remain_on_channel ||
7433 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7434 return -EOPNOTSUPP;
7435
7436 /*
7437 * We should be on that channel for at least a minimum amount of
7438 * time (10ms) but no longer than the driver supports.
7439 */
7440 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7441 duration > rdev->wiphy.max_remain_on_channel_duration)
7442 return -EINVAL;
7443
7444 err = nl80211_parse_chandef(rdev, info, &chandef);
7445 if (err)
7446 return err;
7447
7448 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7449 if (!msg)
7450 return -ENOMEM;
7451
7452 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7453 NL80211_CMD_REMAIN_ON_CHANNEL);
7454 if (!hdr) {
7455 err = -ENOBUFS;
7456 goto free_msg;
7457 }
7458
7459 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7460 duration, &cookie);
7461
7462 if (err)
7463 goto free_msg;
7464
7465 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7466 goto nla_put_failure;
7467
7468 genlmsg_end(msg, hdr);
7469
7470 return genlmsg_reply(msg, info);
7471
7472 nla_put_failure:
7473 err = -ENOBUFS;
7474 free_msg:
7475 nlmsg_free(msg);
7476 return err;
7477 }
7478
7479 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7480 struct genl_info *info)
7481 {
7482 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7483 struct wireless_dev *wdev = info->user_ptr[1];
7484 u64 cookie;
7485
7486 if (!info->attrs[NL80211_ATTR_COOKIE])
7487 return -EINVAL;
7488
7489 if (!rdev->ops->cancel_remain_on_channel)
7490 return -EOPNOTSUPP;
7491
7492 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7493
7494 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7495 }
7496
7497 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7498 u8 *rates, u8 rates_len)
7499 {
7500 u8 i;
7501 u32 mask = 0;
7502
7503 for (i = 0; i < rates_len; i++) {
7504 int rate = (rates[i] & 0x7f) * 5;
7505 int ridx;
7506 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7507 struct ieee80211_rate *srate =
7508 &sband->bitrates[ridx];
7509 if (rate == srate->bitrate) {
7510 mask |= 1 << ridx;
7511 break;
7512 }
7513 }
7514 if (ridx == sband->n_bitrates)
7515 return 0; /* rate not found */
7516 }
7517
7518 return mask;
7519 }
7520
7521 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7522 u8 *rates, u8 rates_len,
7523 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7524 {
7525 u8 i;
7526
7527 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7528
7529 for (i = 0; i < rates_len; i++) {
7530 int ridx, rbit;
7531
7532 ridx = rates[i] / 8;
7533 rbit = BIT(rates[i] % 8);
7534
7535 /* check validity */
7536 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7537 return false;
7538
7539 /* check availability */
7540 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7541 mcs[ridx] |= rbit;
7542 else
7543 return false;
7544 }
7545
7546 return true;
7547 }
7548
7549 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7550 {
7551 u16 mcs_mask = 0;
7552
7553 switch (vht_mcs_map) {
7554 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7555 break;
7556 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7557 mcs_mask = 0x00FF;
7558 break;
7559 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7560 mcs_mask = 0x01FF;
7561 break;
7562 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7563 mcs_mask = 0x03FF;
7564 break;
7565 default:
7566 break;
7567 }
7568
7569 return mcs_mask;
7570 }
7571
7572 static void vht_build_mcs_mask(u16 vht_mcs_map,
7573 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7574 {
7575 u8 nss;
7576
7577 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7578 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7579 vht_mcs_map >>= 2;
7580 }
7581 }
7582
7583 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7584 struct nl80211_txrate_vht *txrate,
7585 u16 mcs[NL80211_VHT_NSS_MAX])
7586 {
7587 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7588 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7589 u8 i;
7590
7591 if (!sband->vht_cap.vht_supported)
7592 return false;
7593
7594 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7595
7596 /* Build vht_mcs_mask from VHT capabilities */
7597 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7598
7599 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7600 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7601 mcs[i] = txrate->mcs[i];
7602 else
7603 return false;
7604 }
7605
7606 return true;
7607 }
7608
7609 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7610 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7611 .len = NL80211_MAX_SUPP_RATES },
7612 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7613 .len = NL80211_MAX_SUPP_HT_RATES },
7614 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7615 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7616 };
7617
7618 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7619 struct genl_info *info)
7620 {
7621 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7622 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7623 struct cfg80211_bitrate_mask mask;
7624 int rem, i;
7625 struct net_device *dev = info->user_ptr[1];
7626 struct nlattr *tx_rates;
7627 struct ieee80211_supported_band *sband;
7628 u16 vht_tx_mcs_map;
7629
7630 if (!rdev->ops->set_bitrate_mask)
7631 return -EOPNOTSUPP;
7632
7633 memset(&mask, 0, sizeof(mask));
7634 /* Default to all rates enabled */
7635 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7636 sband = rdev->wiphy.bands[i];
7637
7638 if (!sband)
7639 continue;
7640
7641 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7642 memcpy(mask.control[i].ht_mcs,
7643 sband->ht_cap.mcs.rx_mask,
7644 sizeof(mask.control[i].ht_mcs));
7645
7646 if (!sband->vht_cap.vht_supported)
7647 continue;
7648
7649 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7650 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7651 }
7652
7653 /* if no rates are given set it back to the defaults */
7654 if (!info->attrs[NL80211_ATTR_TX_RATES])
7655 goto out;
7656
7657 /*
7658 * The nested attribute uses enum nl80211_band as the index. This maps
7659 * directly to the enum ieee80211_band values used in cfg80211.
7660 */
7661 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7662 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7663 enum ieee80211_band band = nla_type(tx_rates);
7664 int err;
7665
7666 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7667 return -EINVAL;
7668 sband = rdev->wiphy.bands[band];
7669 if (sband == NULL)
7670 return -EINVAL;
7671 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7672 nla_len(tx_rates), nl80211_txattr_policy);
7673 if (err)
7674 return err;
7675 if (tb[NL80211_TXRATE_LEGACY]) {
7676 mask.control[band].legacy = rateset_to_mask(
7677 sband,
7678 nla_data(tb[NL80211_TXRATE_LEGACY]),
7679 nla_len(tb[NL80211_TXRATE_LEGACY]));
7680 if ((mask.control[band].legacy == 0) &&
7681 nla_len(tb[NL80211_TXRATE_LEGACY]))
7682 return -EINVAL;
7683 }
7684 if (tb[NL80211_TXRATE_HT]) {
7685 if (!ht_rateset_to_mask(
7686 sband,
7687 nla_data(tb[NL80211_TXRATE_HT]),
7688 nla_len(tb[NL80211_TXRATE_HT]),
7689 mask.control[band].ht_mcs))
7690 return -EINVAL;
7691 }
7692 if (tb[NL80211_TXRATE_VHT]) {
7693 if (!vht_set_mcs_mask(
7694 sband,
7695 nla_data(tb[NL80211_TXRATE_VHT]),
7696 mask.control[band].vht_mcs))
7697 return -EINVAL;
7698 }
7699 if (tb[NL80211_TXRATE_GI]) {
7700 mask.control[band].gi =
7701 nla_get_u8(tb[NL80211_TXRATE_GI]);
7702 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7703 return -EINVAL;
7704 }
7705
7706 if (mask.control[band].legacy == 0) {
7707 /* don't allow empty legacy rates if HT or VHT
7708 * are not even supported.
7709 */
7710 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7711 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7712 return -EINVAL;
7713
7714 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7715 if (mask.control[band].ht_mcs[i])
7716 goto out;
7717
7718 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7719 if (mask.control[band].vht_mcs[i])
7720 goto out;
7721
7722 /* legacy and mcs rates may not be both empty */
7723 return -EINVAL;
7724 }
7725 }
7726
7727 out:
7728 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7729 }
7730
7731 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7732 {
7733 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7734 struct wireless_dev *wdev = info->user_ptr[1];
7735 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7736
7737 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7738 return -EINVAL;
7739
7740 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7741 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7742
7743 switch (wdev->iftype) {
7744 case NL80211_IFTYPE_STATION:
7745 case NL80211_IFTYPE_ADHOC:
7746 case NL80211_IFTYPE_P2P_CLIENT:
7747 case NL80211_IFTYPE_AP:
7748 case NL80211_IFTYPE_AP_VLAN:
7749 case NL80211_IFTYPE_MESH_POINT:
7750 case NL80211_IFTYPE_P2P_GO:
7751 case NL80211_IFTYPE_P2P_DEVICE:
7752 break;
7753 default:
7754 return -EOPNOTSUPP;
7755 }
7756
7757 /* not much point in registering if we can't reply */
7758 if (!rdev->ops->mgmt_tx)
7759 return -EOPNOTSUPP;
7760
7761 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7762 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7763 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7764 }
7765
7766 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7767 {
7768 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7769 struct wireless_dev *wdev = info->user_ptr[1];
7770 struct cfg80211_chan_def chandef;
7771 int err;
7772 void *hdr = NULL;
7773 u64 cookie;
7774 struct sk_buff *msg = NULL;
7775 struct cfg80211_mgmt_tx_params params = {
7776 .dont_wait_for_ack =
7777 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7778 };
7779
7780 if (!info->attrs[NL80211_ATTR_FRAME])
7781 return -EINVAL;
7782
7783 if (!rdev->ops->mgmt_tx)
7784 return -EOPNOTSUPP;
7785
7786 switch (wdev->iftype) {
7787 case NL80211_IFTYPE_P2P_DEVICE:
7788 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7789 return -EINVAL;
7790 case NL80211_IFTYPE_STATION:
7791 case NL80211_IFTYPE_ADHOC:
7792 case NL80211_IFTYPE_P2P_CLIENT:
7793 case NL80211_IFTYPE_AP:
7794 case NL80211_IFTYPE_AP_VLAN:
7795 case NL80211_IFTYPE_MESH_POINT:
7796 case NL80211_IFTYPE_P2P_GO:
7797 break;
7798 default:
7799 return -EOPNOTSUPP;
7800 }
7801
7802 if (info->attrs[NL80211_ATTR_DURATION]) {
7803 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7804 return -EINVAL;
7805 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7806
7807 /*
7808 * We should wait on the channel for at least a minimum amount
7809 * of time (10ms) but no longer than the driver supports.
7810 */
7811 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7812 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7813 return -EINVAL;
7814
7815 }
7816
7817 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7818
7819 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7820 return -EINVAL;
7821
7822 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7823
7824 /* get the channel if any has been specified, otherwise pass NULL to
7825 * the driver. The latter will use the current one
7826 */
7827 chandef.chan = NULL;
7828 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7829 err = nl80211_parse_chandef(rdev, info, &chandef);
7830 if (err)
7831 return err;
7832 }
7833
7834 if (!chandef.chan && params.offchan)
7835 return -EINVAL;
7836
7837 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7838 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7839
7840 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
7841 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
7842 int i;
7843
7844 if (len % sizeof(u16))
7845 return -EINVAL;
7846
7847 params.n_csa_offsets = len / sizeof(u16);
7848 params.csa_offsets =
7849 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
7850
7851 /* check that all the offsets fit the frame */
7852 for (i = 0; i < params.n_csa_offsets; i++) {
7853 if (params.csa_offsets[i] >= params.len)
7854 return -EINVAL;
7855 }
7856 }
7857
7858 if (!params.dont_wait_for_ack) {
7859 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7860 if (!msg)
7861 return -ENOMEM;
7862
7863 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7864 NL80211_CMD_FRAME);
7865 if (!hdr) {
7866 err = -ENOBUFS;
7867 goto free_msg;
7868 }
7869 }
7870
7871 params.chan = chandef.chan;
7872 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7873 if (err)
7874 goto free_msg;
7875
7876 if (msg) {
7877 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7878 goto nla_put_failure;
7879
7880 genlmsg_end(msg, hdr);
7881 return genlmsg_reply(msg, info);
7882 }
7883
7884 return 0;
7885
7886 nla_put_failure:
7887 err = -ENOBUFS;
7888 free_msg:
7889 nlmsg_free(msg);
7890 return err;
7891 }
7892
7893 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7894 {
7895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7896 struct wireless_dev *wdev = info->user_ptr[1];
7897 u64 cookie;
7898
7899 if (!info->attrs[NL80211_ATTR_COOKIE])
7900 return -EINVAL;
7901
7902 if (!rdev->ops->mgmt_tx_cancel_wait)
7903 return -EOPNOTSUPP;
7904
7905 switch (wdev->iftype) {
7906 case NL80211_IFTYPE_STATION:
7907 case NL80211_IFTYPE_ADHOC:
7908 case NL80211_IFTYPE_P2P_CLIENT:
7909 case NL80211_IFTYPE_AP:
7910 case NL80211_IFTYPE_AP_VLAN:
7911 case NL80211_IFTYPE_P2P_GO:
7912 case NL80211_IFTYPE_P2P_DEVICE:
7913 break;
7914 default:
7915 return -EOPNOTSUPP;
7916 }
7917
7918 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7919
7920 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7921 }
7922
7923 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7924 {
7925 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7926 struct wireless_dev *wdev;
7927 struct net_device *dev = info->user_ptr[1];
7928 u8 ps_state;
7929 bool state;
7930 int err;
7931
7932 if (!info->attrs[NL80211_ATTR_PS_STATE])
7933 return -EINVAL;
7934
7935 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7936
7937 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7938 return -EINVAL;
7939
7940 wdev = dev->ieee80211_ptr;
7941
7942 if (!rdev->ops->set_power_mgmt)
7943 return -EOPNOTSUPP;
7944
7945 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7946
7947 if (state == wdev->ps)
7948 return 0;
7949
7950 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7951 if (!err)
7952 wdev->ps = state;
7953 return err;
7954 }
7955
7956 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7957 {
7958 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7959 enum nl80211_ps_state ps_state;
7960 struct wireless_dev *wdev;
7961 struct net_device *dev = info->user_ptr[1];
7962 struct sk_buff *msg;
7963 void *hdr;
7964 int err;
7965
7966 wdev = dev->ieee80211_ptr;
7967
7968 if (!rdev->ops->set_power_mgmt)
7969 return -EOPNOTSUPP;
7970
7971 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7972 if (!msg)
7973 return -ENOMEM;
7974
7975 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7976 NL80211_CMD_GET_POWER_SAVE);
7977 if (!hdr) {
7978 err = -ENOBUFS;
7979 goto free_msg;
7980 }
7981
7982 if (wdev->ps)
7983 ps_state = NL80211_PS_ENABLED;
7984 else
7985 ps_state = NL80211_PS_DISABLED;
7986
7987 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7988 goto nla_put_failure;
7989
7990 genlmsg_end(msg, hdr);
7991 return genlmsg_reply(msg, info);
7992
7993 nla_put_failure:
7994 err = -ENOBUFS;
7995 free_msg:
7996 nlmsg_free(msg);
7997 return err;
7998 }
7999
8000 static const struct nla_policy
8001 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8002 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8003 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8004 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8005 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8006 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8007 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8008 };
8009
8010 static int nl80211_set_cqm_txe(struct genl_info *info,
8011 u32 rate, u32 pkts, u32 intvl)
8012 {
8013 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8014 struct net_device *dev = info->user_ptr[1];
8015 struct wireless_dev *wdev = dev->ieee80211_ptr;
8016
8017 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8018 return -EINVAL;
8019
8020 if (!rdev->ops->set_cqm_txe_config)
8021 return -EOPNOTSUPP;
8022
8023 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8024 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8025 return -EOPNOTSUPP;
8026
8027 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8028 }
8029
8030 static int nl80211_set_cqm_rssi(struct genl_info *info,
8031 s32 threshold, u32 hysteresis)
8032 {
8033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8034 struct net_device *dev = info->user_ptr[1];
8035 struct wireless_dev *wdev = dev->ieee80211_ptr;
8036
8037 if (threshold > 0)
8038 return -EINVAL;
8039
8040 /* disabling - hysteresis should also be zero then */
8041 if (threshold == 0)
8042 hysteresis = 0;
8043
8044 if (!rdev->ops->set_cqm_rssi_config)
8045 return -EOPNOTSUPP;
8046
8047 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8048 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8049 return -EOPNOTSUPP;
8050
8051 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8052 }
8053
8054 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8055 {
8056 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8057 struct nlattr *cqm;
8058 int err;
8059
8060 cqm = info->attrs[NL80211_ATTR_CQM];
8061 if (!cqm)
8062 return -EINVAL;
8063
8064 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8065 nl80211_attr_cqm_policy);
8066 if (err)
8067 return err;
8068
8069 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8070 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8071 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8072 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8073
8074 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8075 }
8076
8077 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8078 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8079 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8080 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8081 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8082 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8083
8084 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8085 }
8086
8087 return -EINVAL;
8088 }
8089
8090 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8091 {
8092 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8093 struct net_device *dev = info->user_ptr[1];
8094 struct mesh_config cfg;
8095 struct mesh_setup setup;
8096 int err;
8097
8098 /* start with default */
8099 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8100 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8101
8102 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8103 /* and parse parameters if given */
8104 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8105 if (err)
8106 return err;
8107 }
8108
8109 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8110 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8111 return -EINVAL;
8112
8113 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8114 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8115
8116 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8117 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8118 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8119 return -EINVAL;
8120
8121 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8122 setup.beacon_interval =
8123 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8124 if (setup.beacon_interval < 10 ||
8125 setup.beacon_interval > 10000)
8126 return -EINVAL;
8127 }
8128
8129 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8130 setup.dtim_period =
8131 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8132 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8133 return -EINVAL;
8134 }
8135
8136 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8137 /* parse additional setup parameters if given */
8138 err = nl80211_parse_mesh_setup(info, &setup);
8139 if (err)
8140 return err;
8141 }
8142
8143 if (setup.user_mpm)
8144 cfg.auto_open_plinks = false;
8145
8146 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8147 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8148 if (err)
8149 return err;
8150 } else {
8151 /* cfg80211_join_mesh() will sort it out */
8152 setup.chandef.chan = NULL;
8153 }
8154
8155 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8156 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8157 int n_rates =
8158 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8159 struct ieee80211_supported_band *sband;
8160
8161 if (!setup.chandef.chan)
8162 return -EINVAL;
8163
8164 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8165
8166 err = ieee80211_get_ratemask(sband, rates, n_rates,
8167 &setup.basic_rates);
8168 if (err)
8169 return err;
8170 }
8171
8172 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8173 }
8174
8175 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8176 {
8177 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8178 struct net_device *dev = info->user_ptr[1];
8179
8180 return cfg80211_leave_mesh(rdev, dev);
8181 }
8182
8183 #ifdef CONFIG_PM
8184 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8185 struct cfg80211_registered_device *rdev)
8186 {
8187 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8188 struct nlattr *nl_pats, *nl_pat;
8189 int i, pat_len;
8190
8191 if (!wowlan->n_patterns)
8192 return 0;
8193
8194 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8195 if (!nl_pats)
8196 return -ENOBUFS;
8197
8198 for (i = 0; i < wowlan->n_patterns; i++) {
8199 nl_pat = nla_nest_start(msg, i + 1);
8200 if (!nl_pat)
8201 return -ENOBUFS;
8202 pat_len = wowlan->patterns[i].pattern_len;
8203 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8204 wowlan->patterns[i].mask) ||
8205 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8206 wowlan->patterns[i].pattern) ||
8207 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8208 wowlan->patterns[i].pkt_offset))
8209 return -ENOBUFS;
8210 nla_nest_end(msg, nl_pat);
8211 }
8212 nla_nest_end(msg, nl_pats);
8213
8214 return 0;
8215 }
8216
8217 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8218 struct cfg80211_wowlan_tcp *tcp)
8219 {
8220 struct nlattr *nl_tcp;
8221
8222 if (!tcp)
8223 return 0;
8224
8225 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8226 if (!nl_tcp)
8227 return -ENOBUFS;
8228
8229 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8230 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8231 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8232 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8233 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8234 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8235 tcp->payload_len, tcp->payload) ||
8236 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8237 tcp->data_interval) ||
8238 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8239 tcp->wake_len, tcp->wake_data) ||
8240 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8241 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8242 return -ENOBUFS;
8243
8244 if (tcp->payload_seq.len &&
8245 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8246 sizeof(tcp->payload_seq), &tcp->payload_seq))
8247 return -ENOBUFS;
8248
8249 if (tcp->payload_tok.len &&
8250 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8251 sizeof(tcp->payload_tok) + tcp->tokens_size,
8252 &tcp->payload_tok))
8253 return -ENOBUFS;
8254
8255 nla_nest_end(msg, nl_tcp);
8256
8257 return 0;
8258 }
8259
8260 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8261 {
8262 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8263 struct sk_buff *msg;
8264 void *hdr;
8265 u32 size = NLMSG_DEFAULT_SIZE;
8266
8267 if (!rdev->wiphy.wowlan)
8268 return -EOPNOTSUPP;
8269
8270 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8271 /* adjust size to have room for all the data */
8272 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8273 rdev->wiphy.wowlan_config->tcp->payload_len +
8274 rdev->wiphy.wowlan_config->tcp->wake_len +
8275 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8276 }
8277
8278 msg = nlmsg_new(size, GFP_KERNEL);
8279 if (!msg)
8280 return -ENOMEM;
8281
8282 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8283 NL80211_CMD_GET_WOWLAN);
8284 if (!hdr)
8285 goto nla_put_failure;
8286
8287 if (rdev->wiphy.wowlan_config) {
8288 struct nlattr *nl_wowlan;
8289
8290 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8291 if (!nl_wowlan)
8292 goto nla_put_failure;
8293
8294 if ((rdev->wiphy.wowlan_config->any &&
8295 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8296 (rdev->wiphy.wowlan_config->disconnect &&
8297 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8298 (rdev->wiphy.wowlan_config->magic_pkt &&
8299 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8300 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8301 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8302 (rdev->wiphy.wowlan_config->eap_identity_req &&
8303 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8304 (rdev->wiphy.wowlan_config->four_way_handshake &&
8305 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8306 (rdev->wiphy.wowlan_config->rfkill_release &&
8307 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8308 goto nla_put_failure;
8309
8310 if (nl80211_send_wowlan_patterns(msg, rdev))
8311 goto nla_put_failure;
8312
8313 if (nl80211_send_wowlan_tcp(msg,
8314 rdev->wiphy.wowlan_config->tcp))
8315 goto nla_put_failure;
8316
8317 nla_nest_end(msg, nl_wowlan);
8318 }
8319
8320 genlmsg_end(msg, hdr);
8321 return genlmsg_reply(msg, info);
8322
8323 nla_put_failure:
8324 nlmsg_free(msg);
8325 return -ENOBUFS;
8326 }
8327
8328 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8329 struct nlattr *attr,
8330 struct cfg80211_wowlan *trig)
8331 {
8332 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8333 struct cfg80211_wowlan_tcp *cfg;
8334 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8335 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8336 u32 size;
8337 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8338 int err, port;
8339
8340 if (!rdev->wiphy.wowlan->tcp)
8341 return -EINVAL;
8342
8343 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8344 nla_data(attr), nla_len(attr),
8345 nl80211_wowlan_tcp_policy);
8346 if (err)
8347 return err;
8348
8349 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8350 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8351 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8352 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8353 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8354 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8355 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8356 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8357 return -EINVAL;
8358
8359 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8360 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8361 return -EINVAL;
8362
8363 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8364 rdev->wiphy.wowlan->tcp->data_interval_max ||
8365 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8366 return -EINVAL;
8367
8368 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8369 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8370 return -EINVAL;
8371
8372 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8373 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8374 return -EINVAL;
8375
8376 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8377 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8378
8379 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8380 tokens_size = tokln - sizeof(*tok);
8381
8382 if (!tok->len || tokens_size % tok->len)
8383 return -EINVAL;
8384 if (!rdev->wiphy.wowlan->tcp->tok)
8385 return -EINVAL;
8386 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8387 return -EINVAL;
8388 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8389 return -EINVAL;
8390 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8391 return -EINVAL;
8392 if (tok->offset + tok->len > data_size)
8393 return -EINVAL;
8394 }
8395
8396 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8397 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8398 if (!rdev->wiphy.wowlan->tcp->seq)
8399 return -EINVAL;
8400 if (seq->len == 0 || seq->len > 4)
8401 return -EINVAL;
8402 if (seq->len + seq->offset > data_size)
8403 return -EINVAL;
8404 }
8405
8406 size = sizeof(*cfg);
8407 size += data_size;
8408 size += wake_size + wake_mask_size;
8409 size += tokens_size;
8410
8411 cfg = kzalloc(size, GFP_KERNEL);
8412 if (!cfg)
8413 return -ENOMEM;
8414 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8415 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8416 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8417 ETH_ALEN);
8418 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8419 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8420 else
8421 port = 0;
8422 #ifdef CONFIG_INET
8423 /* allocate a socket and port for it and use it */
8424 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8425 IPPROTO_TCP, &cfg->sock, 1);
8426 if (err) {
8427 kfree(cfg);
8428 return err;
8429 }
8430 if (inet_csk_get_port(cfg->sock->sk, port)) {
8431 sock_release(cfg->sock);
8432 kfree(cfg);
8433 return -EADDRINUSE;
8434 }
8435 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8436 #else
8437 if (!port) {
8438 kfree(cfg);
8439 return -EINVAL;
8440 }
8441 cfg->src_port = port;
8442 #endif
8443
8444 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8445 cfg->payload_len = data_size;
8446 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8447 memcpy((void *)cfg->payload,
8448 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8449 data_size);
8450 if (seq)
8451 cfg->payload_seq = *seq;
8452 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8453 cfg->wake_len = wake_size;
8454 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8455 memcpy((void *)cfg->wake_data,
8456 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8457 wake_size);
8458 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8459 data_size + wake_size;
8460 memcpy((void *)cfg->wake_mask,
8461 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8462 wake_mask_size);
8463 if (tok) {
8464 cfg->tokens_size = tokens_size;
8465 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8466 }
8467
8468 trig->tcp = cfg;
8469
8470 return 0;
8471 }
8472
8473 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8474 {
8475 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8476 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8477 struct cfg80211_wowlan new_triggers = {};
8478 struct cfg80211_wowlan *ntrig;
8479 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8480 int err, i;
8481 bool prev_enabled = rdev->wiphy.wowlan_config;
8482
8483 if (!wowlan)
8484 return -EOPNOTSUPP;
8485
8486 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8487 cfg80211_rdev_free_wowlan(rdev);
8488 rdev->wiphy.wowlan_config = NULL;
8489 goto set_wakeup;
8490 }
8491
8492 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8493 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8494 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8495 nl80211_wowlan_policy);
8496 if (err)
8497 return err;
8498
8499 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8500 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8501 return -EINVAL;
8502 new_triggers.any = true;
8503 }
8504
8505 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8506 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8507 return -EINVAL;
8508 new_triggers.disconnect = true;
8509 }
8510
8511 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8512 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8513 return -EINVAL;
8514 new_triggers.magic_pkt = true;
8515 }
8516
8517 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8518 return -EINVAL;
8519
8520 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8521 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8522 return -EINVAL;
8523 new_triggers.gtk_rekey_failure = true;
8524 }
8525
8526 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8527 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8528 return -EINVAL;
8529 new_triggers.eap_identity_req = true;
8530 }
8531
8532 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8533 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8534 return -EINVAL;
8535 new_triggers.four_way_handshake = true;
8536 }
8537
8538 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8539 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8540 return -EINVAL;
8541 new_triggers.rfkill_release = true;
8542 }
8543
8544 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8545 struct nlattr *pat;
8546 int n_patterns = 0;
8547 int rem, pat_len, mask_len, pkt_offset;
8548 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8549
8550 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8551 rem)
8552 n_patterns++;
8553 if (n_patterns > wowlan->n_patterns)
8554 return -EINVAL;
8555
8556 new_triggers.patterns = kcalloc(n_patterns,
8557 sizeof(new_triggers.patterns[0]),
8558 GFP_KERNEL);
8559 if (!new_triggers.patterns)
8560 return -ENOMEM;
8561
8562 new_triggers.n_patterns = n_patterns;
8563 i = 0;
8564
8565 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8566 rem) {
8567 u8 *mask_pat;
8568
8569 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8570 nla_len(pat), NULL);
8571 err = -EINVAL;
8572 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8573 !pat_tb[NL80211_PKTPAT_PATTERN])
8574 goto error;
8575 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8576 mask_len = DIV_ROUND_UP(pat_len, 8);
8577 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8578 goto error;
8579 if (pat_len > wowlan->pattern_max_len ||
8580 pat_len < wowlan->pattern_min_len)
8581 goto error;
8582
8583 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8584 pkt_offset = 0;
8585 else
8586 pkt_offset = nla_get_u32(
8587 pat_tb[NL80211_PKTPAT_OFFSET]);
8588 if (pkt_offset > wowlan->max_pkt_offset)
8589 goto error;
8590 new_triggers.patterns[i].pkt_offset = pkt_offset;
8591
8592 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8593 if (!mask_pat) {
8594 err = -ENOMEM;
8595 goto error;
8596 }
8597 new_triggers.patterns[i].mask = mask_pat;
8598 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8599 mask_len);
8600 mask_pat += mask_len;
8601 new_triggers.patterns[i].pattern = mask_pat;
8602 new_triggers.patterns[i].pattern_len = pat_len;
8603 memcpy(mask_pat,
8604 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8605 pat_len);
8606 i++;
8607 }
8608 }
8609
8610 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8611 err = nl80211_parse_wowlan_tcp(
8612 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8613 &new_triggers);
8614 if (err)
8615 goto error;
8616 }
8617
8618 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8619 if (!ntrig) {
8620 err = -ENOMEM;
8621 goto error;
8622 }
8623 cfg80211_rdev_free_wowlan(rdev);
8624 rdev->wiphy.wowlan_config = ntrig;
8625
8626 set_wakeup:
8627 if (rdev->ops->set_wakeup &&
8628 prev_enabled != !!rdev->wiphy.wowlan_config)
8629 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8630
8631 return 0;
8632 error:
8633 for (i = 0; i < new_triggers.n_patterns; i++)
8634 kfree(new_triggers.patterns[i].mask);
8635 kfree(new_triggers.patterns);
8636 if (new_triggers.tcp && new_triggers.tcp->sock)
8637 sock_release(new_triggers.tcp->sock);
8638 kfree(new_triggers.tcp);
8639 return err;
8640 }
8641 #endif
8642
8643 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8644 struct cfg80211_registered_device *rdev)
8645 {
8646 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8647 int i, j, pat_len;
8648 struct cfg80211_coalesce_rules *rule;
8649
8650 if (!rdev->coalesce->n_rules)
8651 return 0;
8652
8653 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8654 if (!nl_rules)
8655 return -ENOBUFS;
8656
8657 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8658 nl_rule = nla_nest_start(msg, i + 1);
8659 if (!nl_rule)
8660 return -ENOBUFS;
8661
8662 rule = &rdev->coalesce->rules[i];
8663 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8664 rule->delay))
8665 return -ENOBUFS;
8666
8667 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8668 rule->condition))
8669 return -ENOBUFS;
8670
8671 nl_pats = nla_nest_start(msg,
8672 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8673 if (!nl_pats)
8674 return -ENOBUFS;
8675
8676 for (j = 0; j < rule->n_patterns; j++) {
8677 nl_pat = nla_nest_start(msg, j + 1);
8678 if (!nl_pat)
8679 return -ENOBUFS;
8680 pat_len = rule->patterns[j].pattern_len;
8681 if (nla_put(msg, NL80211_PKTPAT_MASK,
8682 DIV_ROUND_UP(pat_len, 8),
8683 rule->patterns[j].mask) ||
8684 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8685 rule->patterns[j].pattern) ||
8686 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8687 rule->patterns[j].pkt_offset))
8688 return -ENOBUFS;
8689 nla_nest_end(msg, nl_pat);
8690 }
8691 nla_nest_end(msg, nl_pats);
8692 nla_nest_end(msg, nl_rule);
8693 }
8694 nla_nest_end(msg, nl_rules);
8695
8696 return 0;
8697 }
8698
8699 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8700 {
8701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8702 struct sk_buff *msg;
8703 void *hdr;
8704
8705 if (!rdev->wiphy.coalesce)
8706 return -EOPNOTSUPP;
8707
8708 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8709 if (!msg)
8710 return -ENOMEM;
8711
8712 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8713 NL80211_CMD_GET_COALESCE);
8714 if (!hdr)
8715 goto nla_put_failure;
8716
8717 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8718 goto nla_put_failure;
8719
8720 genlmsg_end(msg, hdr);
8721 return genlmsg_reply(msg, info);
8722
8723 nla_put_failure:
8724 nlmsg_free(msg);
8725 return -ENOBUFS;
8726 }
8727
8728 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8729 {
8730 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8731 int i, j;
8732 struct cfg80211_coalesce_rules *rule;
8733
8734 if (!coalesce)
8735 return;
8736
8737 for (i = 0; i < coalesce->n_rules; i++) {
8738 rule = &coalesce->rules[i];
8739 for (j = 0; j < rule->n_patterns; j++)
8740 kfree(rule->patterns[j].mask);
8741 kfree(rule->patterns);
8742 }
8743 kfree(coalesce->rules);
8744 kfree(coalesce);
8745 rdev->coalesce = NULL;
8746 }
8747
8748 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8749 struct nlattr *rule,
8750 struct cfg80211_coalesce_rules *new_rule)
8751 {
8752 int err, i;
8753 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8754 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8755 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8756 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8757
8758 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8759 nla_len(rule), nl80211_coalesce_policy);
8760 if (err)
8761 return err;
8762
8763 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8764 new_rule->delay =
8765 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8766 if (new_rule->delay > coalesce->max_delay)
8767 return -EINVAL;
8768
8769 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8770 new_rule->condition =
8771 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8772 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8773 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8774 return -EINVAL;
8775
8776 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8777 return -EINVAL;
8778
8779 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8780 rem)
8781 n_patterns++;
8782 if (n_patterns > coalesce->n_patterns)
8783 return -EINVAL;
8784
8785 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8786 GFP_KERNEL);
8787 if (!new_rule->patterns)
8788 return -ENOMEM;
8789
8790 new_rule->n_patterns = n_patterns;
8791 i = 0;
8792
8793 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8794 rem) {
8795 u8 *mask_pat;
8796
8797 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8798 nla_len(pat), NULL);
8799 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8800 !pat_tb[NL80211_PKTPAT_PATTERN])
8801 return -EINVAL;
8802 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8803 mask_len = DIV_ROUND_UP(pat_len, 8);
8804 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8805 return -EINVAL;
8806 if (pat_len > coalesce->pattern_max_len ||
8807 pat_len < coalesce->pattern_min_len)
8808 return -EINVAL;
8809
8810 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8811 pkt_offset = 0;
8812 else
8813 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8814 if (pkt_offset > coalesce->max_pkt_offset)
8815 return -EINVAL;
8816 new_rule->patterns[i].pkt_offset = pkt_offset;
8817
8818 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8819 if (!mask_pat)
8820 return -ENOMEM;
8821
8822 new_rule->patterns[i].mask = mask_pat;
8823 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8824 mask_len);
8825
8826 mask_pat += mask_len;
8827 new_rule->patterns[i].pattern = mask_pat;
8828 new_rule->patterns[i].pattern_len = pat_len;
8829 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8830 pat_len);
8831 i++;
8832 }
8833
8834 return 0;
8835 }
8836
8837 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8838 {
8839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8840 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8841 struct cfg80211_coalesce new_coalesce = {};
8842 struct cfg80211_coalesce *n_coalesce;
8843 int err, rem_rule, n_rules = 0, i, j;
8844 struct nlattr *rule;
8845 struct cfg80211_coalesce_rules *tmp_rule;
8846
8847 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8848 return -EOPNOTSUPP;
8849
8850 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8851 cfg80211_rdev_free_coalesce(rdev);
8852 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8853 return 0;
8854 }
8855
8856 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8857 rem_rule)
8858 n_rules++;
8859 if (n_rules > coalesce->n_rules)
8860 return -EINVAL;
8861
8862 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8863 GFP_KERNEL);
8864 if (!new_coalesce.rules)
8865 return -ENOMEM;
8866
8867 new_coalesce.n_rules = n_rules;
8868 i = 0;
8869
8870 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8871 rem_rule) {
8872 err = nl80211_parse_coalesce_rule(rdev, rule,
8873 &new_coalesce.rules[i]);
8874 if (err)
8875 goto error;
8876
8877 i++;
8878 }
8879
8880 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8881 if (err)
8882 goto error;
8883
8884 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8885 if (!n_coalesce) {
8886 err = -ENOMEM;
8887 goto error;
8888 }
8889 cfg80211_rdev_free_coalesce(rdev);
8890 rdev->coalesce = n_coalesce;
8891
8892 return 0;
8893 error:
8894 for (i = 0; i < new_coalesce.n_rules; i++) {
8895 tmp_rule = &new_coalesce.rules[i];
8896 for (j = 0; j < tmp_rule->n_patterns; j++)
8897 kfree(tmp_rule->patterns[j].mask);
8898 kfree(tmp_rule->patterns);
8899 }
8900 kfree(new_coalesce.rules);
8901
8902 return err;
8903 }
8904
8905 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8906 {
8907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8908 struct net_device *dev = info->user_ptr[1];
8909 struct wireless_dev *wdev = dev->ieee80211_ptr;
8910 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8911 struct cfg80211_gtk_rekey_data rekey_data;
8912 int err;
8913
8914 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8915 return -EINVAL;
8916
8917 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8918 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8919 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8920 nl80211_rekey_policy);
8921 if (err)
8922 return err;
8923
8924 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8925 return -ERANGE;
8926 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8927 return -ERANGE;
8928 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8929 return -ERANGE;
8930
8931 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8932 NL80211_KEK_LEN);
8933 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8934 NL80211_KCK_LEN);
8935 memcpy(rekey_data.replay_ctr,
8936 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8937 NL80211_REPLAY_CTR_LEN);
8938
8939 wdev_lock(wdev);
8940 if (!wdev->current_bss) {
8941 err = -ENOTCONN;
8942 goto out;
8943 }
8944
8945 if (!rdev->ops->set_rekey_data) {
8946 err = -EOPNOTSUPP;
8947 goto out;
8948 }
8949
8950 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8951 out:
8952 wdev_unlock(wdev);
8953 return err;
8954 }
8955
8956 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8957 struct genl_info *info)
8958 {
8959 struct net_device *dev = info->user_ptr[1];
8960 struct wireless_dev *wdev = dev->ieee80211_ptr;
8961
8962 if (wdev->iftype != NL80211_IFTYPE_AP &&
8963 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8964 return -EINVAL;
8965
8966 if (wdev->ap_unexpected_nlportid)
8967 return -EBUSY;
8968
8969 wdev->ap_unexpected_nlportid = info->snd_portid;
8970 return 0;
8971 }
8972
8973 static int nl80211_probe_client(struct sk_buff *skb,
8974 struct genl_info *info)
8975 {
8976 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8977 struct net_device *dev = info->user_ptr[1];
8978 struct wireless_dev *wdev = dev->ieee80211_ptr;
8979 struct sk_buff *msg;
8980 void *hdr;
8981 const u8 *addr;
8982 u64 cookie;
8983 int err;
8984
8985 if (wdev->iftype != NL80211_IFTYPE_AP &&
8986 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8987 return -EOPNOTSUPP;
8988
8989 if (!info->attrs[NL80211_ATTR_MAC])
8990 return -EINVAL;
8991
8992 if (!rdev->ops->probe_client)
8993 return -EOPNOTSUPP;
8994
8995 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8996 if (!msg)
8997 return -ENOMEM;
8998
8999 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9000 NL80211_CMD_PROBE_CLIENT);
9001 if (!hdr) {
9002 err = -ENOBUFS;
9003 goto free_msg;
9004 }
9005
9006 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9007
9008 err = rdev_probe_client(rdev, dev, addr, &cookie);
9009 if (err)
9010 goto free_msg;
9011
9012 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9013 goto nla_put_failure;
9014
9015 genlmsg_end(msg, hdr);
9016
9017 return genlmsg_reply(msg, info);
9018
9019 nla_put_failure:
9020 err = -ENOBUFS;
9021 free_msg:
9022 nlmsg_free(msg);
9023 return err;
9024 }
9025
9026 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9027 {
9028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9029 struct cfg80211_beacon_registration *reg, *nreg;
9030 int rv;
9031
9032 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9033 return -EOPNOTSUPP;
9034
9035 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9036 if (!nreg)
9037 return -ENOMEM;
9038
9039 /* First, check if already registered. */
9040 spin_lock_bh(&rdev->beacon_registrations_lock);
9041 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9042 if (reg->nlportid == info->snd_portid) {
9043 rv = -EALREADY;
9044 goto out_err;
9045 }
9046 }
9047 /* Add it to the list */
9048 nreg->nlportid = info->snd_portid;
9049 list_add(&nreg->list, &rdev->beacon_registrations);
9050
9051 spin_unlock_bh(&rdev->beacon_registrations_lock);
9052
9053 return 0;
9054 out_err:
9055 spin_unlock_bh(&rdev->beacon_registrations_lock);
9056 kfree(nreg);
9057 return rv;
9058 }
9059
9060 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9061 {
9062 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9063 struct wireless_dev *wdev = info->user_ptr[1];
9064 int err;
9065
9066 if (!rdev->ops->start_p2p_device)
9067 return -EOPNOTSUPP;
9068
9069 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9070 return -EOPNOTSUPP;
9071
9072 if (wdev->p2p_started)
9073 return 0;
9074
9075 if (rfkill_blocked(rdev->rfkill))
9076 return -ERFKILL;
9077
9078 err = rdev_start_p2p_device(rdev, wdev);
9079 if (err)
9080 return err;
9081
9082 wdev->p2p_started = true;
9083 rdev->opencount++;
9084
9085 return 0;
9086 }
9087
9088 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9089 {
9090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9091 struct wireless_dev *wdev = info->user_ptr[1];
9092
9093 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9094 return -EOPNOTSUPP;
9095
9096 if (!rdev->ops->stop_p2p_device)
9097 return -EOPNOTSUPP;
9098
9099 cfg80211_stop_p2p_device(rdev, wdev);
9100
9101 return 0;
9102 }
9103
9104 static int nl80211_get_protocol_features(struct sk_buff *skb,
9105 struct genl_info *info)
9106 {
9107 void *hdr;
9108 struct sk_buff *msg;
9109
9110 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9111 if (!msg)
9112 return -ENOMEM;
9113
9114 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9115 NL80211_CMD_GET_PROTOCOL_FEATURES);
9116 if (!hdr)
9117 goto nla_put_failure;
9118
9119 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9120 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9121 goto nla_put_failure;
9122
9123 genlmsg_end(msg, hdr);
9124 return genlmsg_reply(msg, info);
9125
9126 nla_put_failure:
9127 kfree_skb(msg);
9128 return -ENOBUFS;
9129 }
9130
9131 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9132 {
9133 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9134 struct cfg80211_update_ft_ies_params ft_params;
9135 struct net_device *dev = info->user_ptr[1];
9136
9137 if (!rdev->ops->update_ft_ies)
9138 return -EOPNOTSUPP;
9139
9140 if (!info->attrs[NL80211_ATTR_MDID] ||
9141 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9142 return -EINVAL;
9143
9144 memset(&ft_params, 0, sizeof(ft_params));
9145 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9146 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9147 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9148
9149 return rdev_update_ft_ies(rdev, dev, &ft_params);
9150 }
9151
9152 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9153 struct genl_info *info)
9154 {
9155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9156 struct wireless_dev *wdev = info->user_ptr[1];
9157 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9158 u16 duration;
9159 int ret;
9160
9161 if (!rdev->ops->crit_proto_start)
9162 return -EOPNOTSUPP;
9163
9164 if (WARN_ON(!rdev->ops->crit_proto_stop))
9165 return -EINVAL;
9166
9167 if (rdev->crit_proto_nlportid)
9168 return -EBUSY;
9169
9170 /* determine protocol if provided */
9171 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9172 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9173
9174 if (proto >= NUM_NL80211_CRIT_PROTO)
9175 return -EINVAL;
9176
9177 /* timeout must be provided */
9178 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9179 return -EINVAL;
9180
9181 duration =
9182 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9183
9184 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9185 return -ERANGE;
9186
9187 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9188 if (!ret)
9189 rdev->crit_proto_nlportid = info->snd_portid;
9190
9191 return ret;
9192 }
9193
9194 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9195 struct genl_info *info)
9196 {
9197 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9198 struct wireless_dev *wdev = info->user_ptr[1];
9199
9200 if (!rdev->ops->crit_proto_stop)
9201 return -EOPNOTSUPP;
9202
9203 if (rdev->crit_proto_nlportid) {
9204 rdev->crit_proto_nlportid = 0;
9205 rdev_crit_proto_stop(rdev, wdev);
9206 }
9207 return 0;
9208 }
9209
9210 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9211 {
9212 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9213 struct wireless_dev *wdev =
9214 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9215 int i, err;
9216 u32 vid, subcmd;
9217
9218 if (!rdev->wiphy.vendor_commands)
9219 return -EOPNOTSUPP;
9220
9221 if (IS_ERR(wdev)) {
9222 err = PTR_ERR(wdev);
9223 if (err != -EINVAL)
9224 return err;
9225 wdev = NULL;
9226 } else if (wdev->wiphy != &rdev->wiphy) {
9227 return -EINVAL;
9228 }
9229
9230 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9231 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9232 return -EINVAL;
9233
9234 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9235 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9236 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9237 const struct wiphy_vendor_command *vcmd;
9238 void *data = NULL;
9239 int len = 0;
9240
9241 vcmd = &rdev->wiphy.vendor_commands[i];
9242
9243 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9244 continue;
9245
9246 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9247 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9248 if (!wdev)
9249 return -EINVAL;
9250 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9251 !wdev->netdev)
9252 return -EINVAL;
9253
9254 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9255 if (wdev->netdev &&
9256 !netif_running(wdev->netdev))
9257 return -ENETDOWN;
9258 if (!wdev->netdev && !wdev->p2p_started)
9259 return -ENETDOWN;
9260 }
9261 } else {
9262 wdev = NULL;
9263 }
9264
9265 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9266 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9267 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9268 }
9269
9270 rdev->cur_cmd_info = info;
9271 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9272 data, len);
9273 rdev->cur_cmd_info = NULL;
9274 return err;
9275 }
9276
9277 return -EOPNOTSUPP;
9278 }
9279
9280 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9281 enum nl80211_commands cmd,
9282 enum nl80211_attrs attr,
9283 int approxlen)
9284 {
9285 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9286
9287 if (WARN_ON(!rdev->cur_cmd_info))
9288 return NULL;
9289
9290 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9291 rdev->cur_cmd_info->snd_portid,
9292 rdev->cur_cmd_info->snd_seq,
9293 cmd, attr, NULL, GFP_KERNEL);
9294 }
9295 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9296
9297 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9298 {
9299 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9300 void *hdr = ((void **)skb->cb)[1];
9301 struct nlattr *data = ((void **)skb->cb)[2];
9302
9303 if (WARN_ON(!rdev->cur_cmd_info)) {
9304 kfree_skb(skb);
9305 return -EINVAL;
9306 }
9307
9308 nla_nest_end(skb, data);
9309 genlmsg_end(skb, hdr);
9310 return genlmsg_reply(skb, rdev->cur_cmd_info);
9311 }
9312 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9313
9314
9315 static int nl80211_set_qos_map(struct sk_buff *skb,
9316 struct genl_info *info)
9317 {
9318 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9319 struct cfg80211_qos_map *qos_map = NULL;
9320 struct net_device *dev = info->user_ptr[1];
9321 u8 *pos, len, num_des, des_len, des;
9322 int ret;
9323
9324 if (!rdev->ops->set_qos_map)
9325 return -EOPNOTSUPP;
9326
9327 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9328 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9329 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9330
9331 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9332 len > IEEE80211_QOS_MAP_LEN_MAX)
9333 return -EINVAL;
9334
9335 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9336 if (!qos_map)
9337 return -ENOMEM;
9338
9339 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9340 if (num_des) {
9341 des_len = num_des *
9342 sizeof(struct cfg80211_dscp_exception);
9343 memcpy(qos_map->dscp_exception, pos, des_len);
9344 qos_map->num_des = num_des;
9345 for (des = 0; des < num_des; des++) {
9346 if (qos_map->dscp_exception[des].up > 7) {
9347 kfree(qos_map);
9348 return -EINVAL;
9349 }
9350 }
9351 pos += des_len;
9352 }
9353 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9354 }
9355
9356 wdev_lock(dev->ieee80211_ptr);
9357 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9358 if (!ret)
9359 ret = rdev_set_qos_map(rdev, dev, qos_map);
9360 wdev_unlock(dev->ieee80211_ptr);
9361
9362 kfree(qos_map);
9363 return ret;
9364 }
9365
9366 #define NL80211_FLAG_NEED_WIPHY 0x01
9367 #define NL80211_FLAG_NEED_NETDEV 0x02
9368 #define NL80211_FLAG_NEED_RTNL 0x04
9369 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9370 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9371 NL80211_FLAG_CHECK_NETDEV_UP)
9372 #define NL80211_FLAG_NEED_WDEV 0x10
9373 /* If a netdev is associated, it must be UP, P2P must be started */
9374 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9375 NL80211_FLAG_CHECK_NETDEV_UP)
9376
9377 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9378 struct genl_info *info)
9379 {
9380 struct cfg80211_registered_device *rdev;
9381 struct wireless_dev *wdev;
9382 struct net_device *dev;
9383 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9384
9385 if (rtnl)
9386 rtnl_lock();
9387
9388 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9389 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9390 if (IS_ERR(rdev)) {
9391 if (rtnl)
9392 rtnl_unlock();
9393 return PTR_ERR(rdev);
9394 }
9395 info->user_ptr[0] = rdev;
9396 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9397 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9398 ASSERT_RTNL();
9399
9400 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9401 info->attrs);
9402 if (IS_ERR(wdev)) {
9403 if (rtnl)
9404 rtnl_unlock();
9405 return PTR_ERR(wdev);
9406 }
9407
9408 dev = wdev->netdev;
9409 rdev = wiphy_to_rdev(wdev->wiphy);
9410
9411 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9412 if (!dev) {
9413 if (rtnl)
9414 rtnl_unlock();
9415 return -EINVAL;
9416 }
9417
9418 info->user_ptr[1] = dev;
9419 } else {
9420 info->user_ptr[1] = wdev;
9421 }
9422
9423 if (dev) {
9424 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9425 !netif_running(dev)) {
9426 if (rtnl)
9427 rtnl_unlock();
9428 return -ENETDOWN;
9429 }
9430
9431 dev_hold(dev);
9432 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9433 if (!wdev->p2p_started) {
9434 if (rtnl)
9435 rtnl_unlock();
9436 return -ENETDOWN;
9437 }
9438 }
9439
9440 info->user_ptr[0] = rdev;
9441 }
9442
9443 return 0;
9444 }
9445
9446 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9447 struct genl_info *info)
9448 {
9449 if (info->user_ptr[1]) {
9450 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9451 struct wireless_dev *wdev = info->user_ptr[1];
9452
9453 if (wdev->netdev)
9454 dev_put(wdev->netdev);
9455 } else {
9456 dev_put(info->user_ptr[1]);
9457 }
9458 }
9459 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9460 rtnl_unlock();
9461 }
9462
9463 static const struct genl_ops nl80211_ops[] = {
9464 {
9465 .cmd = NL80211_CMD_GET_WIPHY,
9466 .doit = nl80211_get_wiphy,
9467 .dumpit = nl80211_dump_wiphy,
9468 .done = nl80211_dump_wiphy_done,
9469 .policy = nl80211_policy,
9470 /* can be retrieved by unprivileged users */
9471 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9472 NL80211_FLAG_NEED_RTNL,
9473 },
9474 {
9475 .cmd = NL80211_CMD_SET_WIPHY,
9476 .doit = nl80211_set_wiphy,
9477 .policy = nl80211_policy,
9478 .flags = GENL_ADMIN_PERM,
9479 .internal_flags = NL80211_FLAG_NEED_RTNL,
9480 },
9481 {
9482 .cmd = NL80211_CMD_GET_INTERFACE,
9483 .doit = nl80211_get_interface,
9484 .dumpit = nl80211_dump_interface,
9485 .policy = nl80211_policy,
9486 /* can be retrieved by unprivileged users */
9487 .internal_flags = NL80211_FLAG_NEED_WDEV |
9488 NL80211_FLAG_NEED_RTNL,
9489 },
9490 {
9491 .cmd = NL80211_CMD_SET_INTERFACE,
9492 .doit = nl80211_set_interface,
9493 .policy = nl80211_policy,
9494 .flags = GENL_ADMIN_PERM,
9495 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9496 NL80211_FLAG_NEED_RTNL,
9497 },
9498 {
9499 .cmd = NL80211_CMD_NEW_INTERFACE,
9500 .doit = nl80211_new_interface,
9501 .policy = nl80211_policy,
9502 .flags = GENL_ADMIN_PERM,
9503 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9504 NL80211_FLAG_NEED_RTNL,
9505 },
9506 {
9507 .cmd = NL80211_CMD_DEL_INTERFACE,
9508 .doit = nl80211_del_interface,
9509 .policy = nl80211_policy,
9510 .flags = GENL_ADMIN_PERM,
9511 .internal_flags = NL80211_FLAG_NEED_WDEV |
9512 NL80211_FLAG_NEED_RTNL,
9513 },
9514 {
9515 .cmd = NL80211_CMD_GET_KEY,
9516 .doit = nl80211_get_key,
9517 .policy = nl80211_policy,
9518 .flags = GENL_ADMIN_PERM,
9519 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9520 NL80211_FLAG_NEED_RTNL,
9521 },
9522 {
9523 .cmd = NL80211_CMD_SET_KEY,
9524 .doit = nl80211_set_key,
9525 .policy = nl80211_policy,
9526 .flags = GENL_ADMIN_PERM,
9527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9528 NL80211_FLAG_NEED_RTNL,
9529 },
9530 {
9531 .cmd = NL80211_CMD_NEW_KEY,
9532 .doit = nl80211_new_key,
9533 .policy = nl80211_policy,
9534 .flags = GENL_ADMIN_PERM,
9535 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9536 NL80211_FLAG_NEED_RTNL,
9537 },
9538 {
9539 .cmd = NL80211_CMD_DEL_KEY,
9540 .doit = nl80211_del_key,
9541 .policy = nl80211_policy,
9542 .flags = GENL_ADMIN_PERM,
9543 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9544 NL80211_FLAG_NEED_RTNL,
9545 },
9546 {
9547 .cmd = NL80211_CMD_SET_BEACON,
9548 .policy = nl80211_policy,
9549 .flags = GENL_ADMIN_PERM,
9550 .doit = nl80211_set_beacon,
9551 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9552 NL80211_FLAG_NEED_RTNL,
9553 },
9554 {
9555 .cmd = NL80211_CMD_START_AP,
9556 .policy = nl80211_policy,
9557 .flags = GENL_ADMIN_PERM,
9558 .doit = nl80211_start_ap,
9559 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9560 NL80211_FLAG_NEED_RTNL,
9561 },
9562 {
9563 .cmd = NL80211_CMD_STOP_AP,
9564 .policy = nl80211_policy,
9565 .flags = GENL_ADMIN_PERM,
9566 .doit = nl80211_stop_ap,
9567 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9568 NL80211_FLAG_NEED_RTNL,
9569 },
9570 {
9571 .cmd = NL80211_CMD_GET_STATION,
9572 .doit = nl80211_get_station,
9573 .dumpit = nl80211_dump_station,
9574 .policy = nl80211_policy,
9575 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9576 NL80211_FLAG_NEED_RTNL,
9577 },
9578 {
9579 .cmd = NL80211_CMD_SET_STATION,
9580 .doit = nl80211_set_station,
9581 .policy = nl80211_policy,
9582 .flags = GENL_ADMIN_PERM,
9583 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9584 NL80211_FLAG_NEED_RTNL,
9585 },
9586 {
9587 .cmd = NL80211_CMD_NEW_STATION,
9588 .doit = nl80211_new_station,
9589 .policy = nl80211_policy,
9590 .flags = GENL_ADMIN_PERM,
9591 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9592 NL80211_FLAG_NEED_RTNL,
9593 },
9594 {
9595 .cmd = NL80211_CMD_DEL_STATION,
9596 .doit = nl80211_del_station,
9597 .policy = nl80211_policy,
9598 .flags = GENL_ADMIN_PERM,
9599 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9600 NL80211_FLAG_NEED_RTNL,
9601 },
9602 {
9603 .cmd = NL80211_CMD_GET_MPATH,
9604 .doit = nl80211_get_mpath,
9605 .dumpit = nl80211_dump_mpath,
9606 .policy = nl80211_policy,
9607 .flags = GENL_ADMIN_PERM,
9608 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9609 NL80211_FLAG_NEED_RTNL,
9610 },
9611 {
9612 .cmd = NL80211_CMD_SET_MPATH,
9613 .doit = nl80211_set_mpath,
9614 .policy = nl80211_policy,
9615 .flags = GENL_ADMIN_PERM,
9616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9617 NL80211_FLAG_NEED_RTNL,
9618 },
9619 {
9620 .cmd = NL80211_CMD_NEW_MPATH,
9621 .doit = nl80211_new_mpath,
9622 .policy = nl80211_policy,
9623 .flags = GENL_ADMIN_PERM,
9624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9625 NL80211_FLAG_NEED_RTNL,
9626 },
9627 {
9628 .cmd = NL80211_CMD_DEL_MPATH,
9629 .doit = nl80211_del_mpath,
9630 .policy = nl80211_policy,
9631 .flags = GENL_ADMIN_PERM,
9632 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9633 NL80211_FLAG_NEED_RTNL,
9634 },
9635 {
9636 .cmd = NL80211_CMD_SET_BSS,
9637 .doit = nl80211_set_bss,
9638 .policy = nl80211_policy,
9639 .flags = GENL_ADMIN_PERM,
9640 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9641 NL80211_FLAG_NEED_RTNL,
9642 },
9643 {
9644 .cmd = NL80211_CMD_GET_REG,
9645 .doit = nl80211_get_reg,
9646 .policy = nl80211_policy,
9647 .internal_flags = NL80211_FLAG_NEED_RTNL,
9648 /* can be retrieved by unprivileged users */
9649 },
9650 {
9651 .cmd = NL80211_CMD_SET_REG,
9652 .doit = nl80211_set_reg,
9653 .policy = nl80211_policy,
9654 .flags = GENL_ADMIN_PERM,
9655 .internal_flags = NL80211_FLAG_NEED_RTNL,
9656 },
9657 {
9658 .cmd = NL80211_CMD_REQ_SET_REG,
9659 .doit = nl80211_req_set_reg,
9660 .policy = nl80211_policy,
9661 .flags = GENL_ADMIN_PERM,
9662 },
9663 {
9664 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9665 .doit = nl80211_get_mesh_config,
9666 .policy = nl80211_policy,
9667 /* can be retrieved by unprivileged users */
9668 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9669 NL80211_FLAG_NEED_RTNL,
9670 },
9671 {
9672 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9673 .doit = nl80211_update_mesh_config,
9674 .policy = nl80211_policy,
9675 .flags = GENL_ADMIN_PERM,
9676 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9677 NL80211_FLAG_NEED_RTNL,
9678 },
9679 {
9680 .cmd = NL80211_CMD_TRIGGER_SCAN,
9681 .doit = nl80211_trigger_scan,
9682 .policy = nl80211_policy,
9683 .flags = GENL_ADMIN_PERM,
9684 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9685 NL80211_FLAG_NEED_RTNL,
9686 },
9687 {
9688 .cmd = NL80211_CMD_GET_SCAN,
9689 .policy = nl80211_policy,
9690 .dumpit = nl80211_dump_scan,
9691 },
9692 {
9693 .cmd = NL80211_CMD_START_SCHED_SCAN,
9694 .doit = nl80211_start_sched_scan,
9695 .policy = nl80211_policy,
9696 .flags = GENL_ADMIN_PERM,
9697 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9698 NL80211_FLAG_NEED_RTNL,
9699 },
9700 {
9701 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9702 .doit = nl80211_stop_sched_scan,
9703 .policy = nl80211_policy,
9704 .flags = GENL_ADMIN_PERM,
9705 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9706 NL80211_FLAG_NEED_RTNL,
9707 },
9708 {
9709 .cmd = NL80211_CMD_AUTHENTICATE,
9710 .doit = nl80211_authenticate,
9711 .policy = nl80211_policy,
9712 .flags = GENL_ADMIN_PERM,
9713 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9714 NL80211_FLAG_NEED_RTNL,
9715 },
9716 {
9717 .cmd = NL80211_CMD_ASSOCIATE,
9718 .doit = nl80211_associate,
9719 .policy = nl80211_policy,
9720 .flags = GENL_ADMIN_PERM,
9721 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9722 NL80211_FLAG_NEED_RTNL,
9723 },
9724 {
9725 .cmd = NL80211_CMD_DEAUTHENTICATE,
9726 .doit = nl80211_deauthenticate,
9727 .policy = nl80211_policy,
9728 .flags = GENL_ADMIN_PERM,
9729 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9730 NL80211_FLAG_NEED_RTNL,
9731 },
9732 {
9733 .cmd = NL80211_CMD_DISASSOCIATE,
9734 .doit = nl80211_disassociate,
9735 .policy = nl80211_policy,
9736 .flags = GENL_ADMIN_PERM,
9737 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9738 NL80211_FLAG_NEED_RTNL,
9739 },
9740 {
9741 .cmd = NL80211_CMD_JOIN_IBSS,
9742 .doit = nl80211_join_ibss,
9743 .policy = nl80211_policy,
9744 .flags = GENL_ADMIN_PERM,
9745 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9746 NL80211_FLAG_NEED_RTNL,
9747 },
9748 {
9749 .cmd = NL80211_CMD_LEAVE_IBSS,
9750 .doit = nl80211_leave_ibss,
9751 .policy = nl80211_policy,
9752 .flags = GENL_ADMIN_PERM,
9753 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9754 NL80211_FLAG_NEED_RTNL,
9755 },
9756 #ifdef CONFIG_NL80211_TESTMODE
9757 {
9758 .cmd = NL80211_CMD_TESTMODE,
9759 .doit = nl80211_testmode_do,
9760 .dumpit = nl80211_testmode_dump,
9761 .policy = nl80211_policy,
9762 .flags = GENL_ADMIN_PERM,
9763 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9764 NL80211_FLAG_NEED_RTNL,
9765 },
9766 #endif
9767 {
9768 .cmd = NL80211_CMD_CONNECT,
9769 .doit = nl80211_connect,
9770 .policy = nl80211_policy,
9771 .flags = GENL_ADMIN_PERM,
9772 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9773 NL80211_FLAG_NEED_RTNL,
9774 },
9775 {
9776 .cmd = NL80211_CMD_DISCONNECT,
9777 .doit = nl80211_disconnect,
9778 .policy = nl80211_policy,
9779 .flags = GENL_ADMIN_PERM,
9780 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9781 NL80211_FLAG_NEED_RTNL,
9782 },
9783 {
9784 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9785 .doit = nl80211_wiphy_netns,
9786 .policy = nl80211_policy,
9787 .flags = GENL_ADMIN_PERM,
9788 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9789 NL80211_FLAG_NEED_RTNL,
9790 },
9791 {
9792 .cmd = NL80211_CMD_GET_SURVEY,
9793 .policy = nl80211_policy,
9794 .dumpit = nl80211_dump_survey,
9795 },
9796 {
9797 .cmd = NL80211_CMD_SET_PMKSA,
9798 .doit = nl80211_setdel_pmksa,
9799 .policy = nl80211_policy,
9800 .flags = GENL_ADMIN_PERM,
9801 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9802 NL80211_FLAG_NEED_RTNL,
9803 },
9804 {
9805 .cmd = NL80211_CMD_DEL_PMKSA,
9806 .doit = nl80211_setdel_pmksa,
9807 .policy = nl80211_policy,
9808 .flags = GENL_ADMIN_PERM,
9809 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9810 NL80211_FLAG_NEED_RTNL,
9811 },
9812 {
9813 .cmd = NL80211_CMD_FLUSH_PMKSA,
9814 .doit = nl80211_flush_pmksa,
9815 .policy = nl80211_policy,
9816 .flags = GENL_ADMIN_PERM,
9817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9818 NL80211_FLAG_NEED_RTNL,
9819 },
9820 {
9821 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9822 .doit = nl80211_remain_on_channel,
9823 .policy = nl80211_policy,
9824 .flags = GENL_ADMIN_PERM,
9825 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9826 NL80211_FLAG_NEED_RTNL,
9827 },
9828 {
9829 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9830 .doit = nl80211_cancel_remain_on_channel,
9831 .policy = nl80211_policy,
9832 .flags = GENL_ADMIN_PERM,
9833 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9834 NL80211_FLAG_NEED_RTNL,
9835 },
9836 {
9837 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9838 .doit = nl80211_set_tx_bitrate_mask,
9839 .policy = nl80211_policy,
9840 .flags = GENL_ADMIN_PERM,
9841 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9842 NL80211_FLAG_NEED_RTNL,
9843 },
9844 {
9845 .cmd = NL80211_CMD_REGISTER_FRAME,
9846 .doit = nl80211_register_mgmt,
9847 .policy = nl80211_policy,
9848 .flags = GENL_ADMIN_PERM,
9849 .internal_flags = NL80211_FLAG_NEED_WDEV |
9850 NL80211_FLAG_NEED_RTNL,
9851 },
9852 {
9853 .cmd = NL80211_CMD_FRAME,
9854 .doit = nl80211_tx_mgmt,
9855 .policy = nl80211_policy,
9856 .flags = GENL_ADMIN_PERM,
9857 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9858 NL80211_FLAG_NEED_RTNL,
9859 },
9860 {
9861 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9862 .doit = nl80211_tx_mgmt_cancel_wait,
9863 .policy = nl80211_policy,
9864 .flags = GENL_ADMIN_PERM,
9865 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9866 NL80211_FLAG_NEED_RTNL,
9867 },
9868 {
9869 .cmd = NL80211_CMD_SET_POWER_SAVE,
9870 .doit = nl80211_set_power_save,
9871 .policy = nl80211_policy,
9872 .flags = GENL_ADMIN_PERM,
9873 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9874 NL80211_FLAG_NEED_RTNL,
9875 },
9876 {
9877 .cmd = NL80211_CMD_GET_POWER_SAVE,
9878 .doit = nl80211_get_power_save,
9879 .policy = nl80211_policy,
9880 /* can be retrieved by unprivileged users */
9881 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9882 NL80211_FLAG_NEED_RTNL,
9883 },
9884 {
9885 .cmd = NL80211_CMD_SET_CQM,
9886 .doit = nl80211_set_cqm,
9887 .policy = nl80211_policy,
9888 .flags = GENL_ADMIN_PERM,
9889 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9890 NL80211_FLAG_NEED_RTNL,
9891 },
9892 {
9893 .cmd = NL80211_CMD_SET_CHANNEL,
9894 .doit = nl80211_set_channel,
9895 .policy = nl80211_policy,
9896 .flags = GENL_ADMIN_PERM,
9897 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9898 NL80211_FLAG_NEED_RTNL,
9899 },
9900 {
9901 .cmd = NL80211_CMD_SET_WDS_PEER,
9902 .doit = nl80211_set_wds_peer,
9903 .policy = nl80211_policy,
9904 .flags = GENL_ADMIN_PERM,
9905 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9906 NL80211_FLAG_NEED_RTNL,
9907 },
9908 {
9909 .cmd = NL80211_CMD_JOIN_MESH,
9910 .doit = nl80211_join_mesh,
9911 .policy = nl80211_policy,
9912 .flags = GENL_ADMIN_PERM,
9913 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9914 NL80211_FLAG_NEED_RTNL,
9915 },
9916 {
9917 .cmd = NL80211_CMD_LEAVE_MESH,
9918 .doit = nl80211_leave_mesh,
9919 .policy = nl80211_policy,
9920 .flags = GENL_ADMIN_PERM,
9921 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9922 NL80211_FLAG_NEED_RTNL,
9923 },
9924 #ifdef CONFIG_PM
9925 {
9926 .cmd = NL80211_CMD_GET_WOWLAN,
9927 .doit = nl80211_get_wowlan,
9928 .policy = nl80211_policy,
9929 /* can be retrieved by unprivileged users */
9930 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9931 NL80211_FLAG_NEED_RTNL,
9932 },
9933 {
9934 .cmd = NL80211_CMD_SET_WOWLAN,
9935 .doit = nl80211_set_wowlan,
9936 .policy = nl80211_policy,
9937 .flags = GENL_ADMIN_PERM,
9938 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9939 NL80211_FLAG_NEED_RTNL,
9940 },
9941 #endif
9942 {
9943 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9944 .doit = nl80211_set_rekey_data,
9945 .policy = nl80211_policy,
9946 .flags = GENL_ADMIN_PERM,
9947 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9948 NL80211_FLAG_NEED_RTNL,
9949 },
9950 {
9951 .cmd = NL80211_CMD_TDLS_MGMT,
9952 .doit = nl80211_tdls_mgmt,
9953 .policy = nl80211_policy,
9954 .flags = GENL_ADMIN_PERM,
9955 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9956 NL80211_FLAG_NEED_RTNL,
9957 },
9958 {
9959 .cmd = NL80211_CMD_TDLS_OPER,
9960 .doit = nl80211_tdls_oper,
9961 .policy = nl80211_policy,
9962 .flags = GENL_ADMIN_PERM,
9963 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9964 NL80211_FLAG_NEED_RTNL,
9965 },
9966 {
9967 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9968 .doit = nl80211_register_unexpected_frame,
9969 .policy = nl80211_policy,
9970 .flags = GENL_ADMIN_PERM,
9971 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9972 NL80211_FLAG_NEED_RTNL,
9973 },
9974 {
9975 .cmd = NL80211_CMD_PROBE_CLIENT,
9976 .doit = nl80211_probe_client,
9977 .policy = nl80211_policy,
9978 .flags = GENL_ADMIN_PERM,
9979 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9980 NL80211_FLAG_NEED_RTNL,
9981 },
9982 {
9983 .cmd = NL80211_CMD_REGISTER_BEACONS,
9984 .doit = nl80211_register_beacons,
9985 .policy = nl80211_policy,
9986 .flags = GENL_ADMIN_PERM,
9987 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9988 NL80211_FLAG_NEED_RTNL,
9989 },
9990 {
9991 .cmd = NL80211_CMD_SET_NOACK_MAP,
9992 .doit = nl80211_set_noack_map,
9993 .policy = nl80211_policy,
9994 .flags = GENL_ADMIN_PERM,
9995 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9996 NL80211_FLAG_NEED_RTNL,
9997 },
9998 {
9999 .cmd = NL80211_CMD_START_P2P_DEVICE,
10000 .doit = nl80211_start_p2p_device,
10001 .policy = nl80211_policy,
10002 .flags = GENL_ADMIN_PERM,
10003 .internal_flags = NL80211_FLAG_NEED_WDEV |
10004 NL80211_FLAG_NEED_RTNL,
10005 },
10006 {
10007 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10008 .doit = nl80211_stop_p2p_device,
10009 .policy = nl80211_policy,
10010 .flags = GENL_ADMIN_PERM,
10011 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10012 NL80211_FLAG_NEED_RTNL,
10013 },
10014 {
10015 .cmd = NL80211_CMD_SET_MCAST_RATE,
10016 .doit = nl80211_set_mcast_rate,
10017 .policy = nl80211_policy,
10018 .flags = GENL_ADMIN_PERM,
10019 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10020 NL80211_FLAG_NEED_RTNL,
10021 },
10022 {
10023 .cmd = NL80211_CMD_SET_MAC_ACL,
10024 .doit = nl80211_set_mac_acl,
10025 .policy = nl80211_policy,
10026 .flags = GENL_ADMIN_PERM,
10027 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10028 NL80211_FLAG_NEED_RTNL,
10029 },
10030 {
10031 .cmd = NL80211_CMD_RADAR_DETECT,
10032 .doit = nl80211_start_radar_detection,
10033 .policy = nl80211_policy,
10034 .flags = GENL_ADMIN_PERM,
10035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10036 NL80211_FLAG_NEED_RTNL,
10037 },
10038 {
10039 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10040 .doit = nl80211_get_protocol_features,
10041 .policy = nl80211_policy,
10042 },
10043 {
10044 .cmd = NL80211_CMD_UPDATE_FT_IES,
10045 .doit = nl80211_update_ft_ies,
10046 .policy = nl80211_policy,
10047 .flags = GENL_ADMIN_PERM,
10048 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10049 NL80211_FLAG_NEED_RTNL,
10050 },
10051 {
10052 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10053 .doit = nl80211_crit_protocol_start,
10054 .policy = nl80211_policy,
10055 .flags = GENL_ADMIN_PERM,
10056 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10057 NL80211_FLAG_NEED_RTNL,
10058 },
10059 {
10060 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10061 .doit = nl80211_crit_protocol_stop,
10062 .policy = nl80211_policy,
10063 .flags = GENL_ADMIN_PERM,
10064 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10065 NL80211_FLAG_NEED_RTNL,
10066 },
10067 {
10068 .cmd = NL80211_CMD_GET_COALESCE,
10069 .doit = nl80211_get_coalesce,
10070 .policy = nl80211_policy,
10071 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10072 NL80211_FLAG_NEED_RTNL,
10073 },
10074 {
10075 .cmd = NL80211_CMD_SET_COALESCE,
10076 .doit = nl80211_set_coalesce,
10077 .policy = nl80211_policy,
10078 .flags = GENL_ADMIN_PERM,
10079 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10080 NL80211_FLAG_NEED_RTNL,
10081 },
10082 {
10083 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10084 .doit = nl80211_channel_switch,
10085 .policy = nl80211_policy,
10086 .flags = GENL_ADMIN_PERM,
10087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10088 NL80211_FLAG_NEED_RTNL,
10089 },
10090 {
10091 .cmd = NL80211_CMD_VENDOR,
10092 .doit = nl80211_vendor_cmd,
10093 .policy = nl80211_policy,
10094 .flags = GENL_ADMIN_PERM,
10095 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10096 NL80211_FLAG_NEED_RTNL,
10097 },
10098 {
10099 .cmd = NL80211_CMD_SET_QOS_MAP,
10100 .doit = nl80211_set_qos_map,
10101 .policy = nl80211_policy,
10102 .flags = GENL_ADMIN_PERM,
10103 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10104 NL80211_FLAG_NEED_RTNL,
10105 },
10106 };
10107
10108 /* notification functions */
10109
10110 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10111 enum nl80211_commands cmd)
10112 {
10113 struct sk_buff *msg;
10114 struct nl80211_dump_wiphy_state state = {};
10115
10116 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10117 cmd != NL80211_CMD_DEL_WIPHY);
10118
10119 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10120 if (!msg)
10121 return;
10122
10123 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10124 nlmsg_free(msg);
10125 return;
10126 }
10127
10128 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10129 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10130 }
10131
10132 static int nl80211_add_scan_req(struct sk_buff *msg,
10133 struct cfg80211_registered_device *rdev)
10134 {
10135 struct cfg80211_scan_request *req = rdev->scan_req;
10136 struct nlattr *nest;
10137 int i;
10138
10139 if (WARN_ON(!req))
10140 return 0;
10141
10142 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10143 if (!nest)
10144 goto nla_put_failure;
10145 for (i = 0; i < req->n_ssids; i++) {
10146 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10147 goto nla_put_failure;
10148 }
10149 nla_nest_end(msg, nest);
10150
10151 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10152 if (!nest)
10153 goto nla_put_failure;
10154 for (i = 0; i < req->n_channels; i++) {
10155 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10156 goto nla_put_failure;
10157 }
10158 nla_nest_end(msg, nest);
10159
10160 if (req->ie &&
10161 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10162 goto nla_put_failure;
10163
10164 if (req->flags &&
10165 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10166 goto nla_put_failure;
10167
10168 return 0;
10169 nla_put_failure:
10170 return -ENOBUFS;
10171 }
10172
10173 static int nl80211_send_scan_msg(struct sk_buff *msg,
10174 struct cfg80211_registered_device *rdev,
10175 struct wireless_dev *wdev,
10176 u32 portid, u32 seq, int flags,
10177 u32 cmd)
10178 {
10179 void *hdr;
10180
10181 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10182 if (!hdr)
10183 return -1;
10184
10185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10186 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10187 wdev->netdev->ifindex)) ||
10188 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10189 goto nla_put_failure;
10190
10191 /* ignore errors and send incomplete event anyway */
10192 nl80211_add_scan_req(msg, rdev);
10193
10194 return genlmsg_end(msg, hdr);
10195
10196 nla_put_failure:
10197 genlmsg_cancel(msg, hdr);
10198 return -EMSGSIZE;
10199 }
10200
10201 static int
10202 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10203 struct cfg80211_registered_device *rdev,
10204 struct net_device *netdev,
10205 u32 portid, u32 seq, int flags, u32 cmd)
10206 {
10207 void *hdr;
10208
10209 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10210 if (!hdr)
10211 return -1;
10212
10213 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10214 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10215 goto nla_put_failure;
10216
10217 return genlmsg_end(msg, hdr);
10218
10219 nla_put_failure:
10220 genlmsg_cancel(msg, hdr);
10221 return -EMSGSIZE;
10222 }
10223
10224 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10225 struct wireless_dev *wdev)
10226 {
10227 struct sk_buff *msg;
10228
10229 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10230 if (!msg)
10231 return;
10232
10233 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10234 NL80211_CMD_TRIGGER_SCAN) < 0) {
10235 nlmsg_free(msg);
10236 return;
10237 }
10238
10239 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10240 NL80211_MCGRP_SCAN, GFP_KERNEL);
10241 }
10242
10243 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10244 struct wireless_dev *wdev, bool aborted)
10245 {
10246 struct sk_buff *msg;
10247
10248 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10249 if (!msg)
10250 return NULL;
10251
10252 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10253 aborted ? NL80211_CMD_SCAN_ABORTED :
10254 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10255 nlmsg_free(msg);
10256 return NULL;
10257 }
10258
10259 return msg;
10260 }
10261
10262 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10263 struct sk_buff *msg)
10264 {
10265 if (!msg)
10266 return;
10267
10268 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10269 NL80211_MCGRP_SCAN, GFP_KERNEL);
10270 }
10271
10272 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10273 struct net_device *netdev)
10274 {
10275 struct sk_buff *msg;
10276
10277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10278 if (!msg)
10279 return;
10280
10281 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10282 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10283 nlmsg_free(msg);
10284 return;
10285 }
10286
10287 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10288 NL80211_MCGRP_SCAN, GFP_KERNEL);
10289 }
10290
10291 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10292 struct net_device *netdev, u32 cmd)
10293 {
10294 struct sk_buff *msg;
10295
10296 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10297 if (!msg)
10298 return;
10299
10300 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10301 nlmsg_free(msg);
10302 return;
10303 }
10304
10305 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10306 NL80211_MCGRP_SCAN, GFP_KERNEL);
10307 }
10308
10309 /*
10310 * This can happen on global regulatory changes or device specific settings
10311 * based on custom world regulatory domains.
10312 */
10313 void nl80211_send_reg_change_event(struct regulatory_request *request)
10314 {
10315 struct sk_buff *msg;
10316 void *hdr;
10317
10318 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10319 if (!msg)
10320 return;
10321
10322 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10323 if (!hdr) {
10324 nlmsg_free(msg);
10325 return;
10326 }
10327
10328 /* Userspace can always count this one always being set */
10329 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10330 goto nla_put_failure;
10331
10332 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10333 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10334 NL80211_REGDOM_TYPE_WORLD))
10335 goto nla_put_failure;
10336 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10337 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10338 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10339 goto nla_put_failure;
10340 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10341 request->intersect) {
10342 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10343 NL80211_REGDOM_TYPE_INTERSECTION))
10344 goto nla_put_failure;
10345 } else {
10346 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10347 NL80211_REGDOM_TYPE_COUNTRY) ||
10348 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10349 request->alpha2))
10350 goto nla_put_failure;
10351 }
10352
10353 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10354 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10355 goto nla_put_failure;
10356
10357 genlmsg_end(msg, hdr);
10358
10359 rcu_read_lock();
10360 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10361 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10362 rcu_read_unlock();
10363
10364 return;
10365
10366 nla_put_failure:
10367 genlmsg_cancel(msg, hdr);
10368 nlmsg_free(msg);
10369 }
10370
10371 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10372 struct net_device *netdev,
10373 const u8 *buf, size_t len,
10374 enum nl80211_commands cmd, gfp_t gfp)
10375 {
10376 struct sk_buff *msg;
10377 void *hdr;
10378
10379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10380 if (!msg)
10381 return;
10382
10383 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10384 if (!hdr) {
10385 nlmsg_free(msg);
10386 return;
10387 }
10388
10389 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10390 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10391 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10392 goto nla_put_failure;
10393
10394 genlmsg_end(msg, hdr);
10395
10396 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10397 NL80211_MCGRP_MLME, gfp);
10398 return;
10399
10400 nla_put_failure:
10401 genlmsg_cancel(msg, hdr);
10402 nlmsg_free(msg);
10403 }
10404
10405 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10406 struct net_device *netdev, const u8 *buf,
10407 size_t len, gfp_t gfp)
10408 {
10409 nl80211_send_mlme_event(rdev, netdev, buf, len,
10410 NL80211_CMD_AUTHENTICATE, gfp);
10411 }
10412
10413 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10414 struct net_device *netdev, const u8 *buf,
10415 size_t len, gfp_t gfp)
10416 {
10417 nl80211_send_mlme_event(rdev, netdev, buf, len,
10418 NL80211_CMD_ASSOCIATE, gfp);
10419 }
10420
10421 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10422 struct net_device *netdev, const u8 *buf,
10423 size_t len, gfp_t gfp)
10424 {
10425 nl80211_send_mlme_event(rdev, netdev, buf, len,
10426 NL80211_CMD_DEAUTHENTICATE, gfp);
10427 }
10428
10429 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10430 struct net_device *netdev, const u8 *buf,
10431 size_t len, gfp_t gfp)
10432 {
10433 nl80211_send_mlme_event(rdev, netdev, buf, len,
10434 NL80211_CMD_DISASSOCIATE, gfp);
10435 }
10436
10437 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10438 size_t len)
10439 {
10440 struct wireless_dev *wdev = dev->ieee80211_ptr;
10441 struct wiphy *wiphy = wdev->wiphy;
10442 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10443 const struct ieee80211_mgmt *mgmt = (void *)buf;
10444 u32 cmd;
10445
10446 if (WARN_ON(len < 2))
10447 return;
10448
10449 if (ieee80211_is_deauth(mgmt->frame_control))
10450 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10451 else
10452 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10453
10454 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10455 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
10456 }
10457 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10458
10459 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10460 struct net_device *netdev, int cmd,
10461 const u8 *addr, gfp_t gfp)
10462 {
10463 struct sk_buff *msg;
10464 void *hdr;
10465
10466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10467 if (!msg)
10468 return;
10469
10470 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10471 if (!hdr) {
10472 nlmsg_free(msg);
10473 return;
10474 }
10475
10476 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10477 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10478 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10479 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10480 goto nla_put_failure;
10481
10482 genlmsg_end(msg, hdr);
10483
10484 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10485 NL80211_MCGRP_MLME, gfp);
10486 return;
10487
10488 nla_put_failure:
10489 genlmsg_cancel(msg, hdr);
10490 nlmsg_free(msg);
10491 }
10492
10493 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10494 struct net_device *netdev, const u8 *addr,
10495 gfp_t gfp)
10496 {
10497 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10498 addr, gfp);
10499 }
10500
10501 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10502 struct net_device *netdev, const u8 *addr,
10503 gfp_t gfp)
10504 {
10505 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10506 addr, gfp);
10507 }
10508
10509 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10510 struct net_device *netdev, const u8 *bssid,
10511 const u8 *req_ie, size_t req_ie_len,
10512 const u8 *resp_ie, size_t resp_ie_len,
10513 u16 status, gfp_t gfp)
10514 {
10515 struct sk_buff *msg;
10516 void *hdr;
10517
10518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10519 if (!msg)
10520 return;
10521
10522 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10523 if (!hdr) {
10524 nlmsg_free(msg);
10525 return;
10526 }
10527
10528 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10530 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10531 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10532 (req_ie &&
10533 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10534 (resp_ie &&
10535 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10536 goto nla_put_failure;
10537
10538 genlmsg_end(msg, hdr);
10539
10540 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10541 NL80211_MCGRP_MLME, gfp);
10542 return;
10543
10544 nla_put_failure:
10545 genlmsg_cancel(msg, hdr);
10546 nlmsg_free(msg);
10547
10548 }
10549
10550 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10551 struct net_device *netdev, const u8 *bssid,
10552 const u8 *req_ie, size_t req_ie_len,
10553 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10554 {
10555 struct sk_buff *msg;
10556 void *hdr;
10557
10558 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10559 if (!msg)
10560 return;
10561
10562 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10563 if (!hdr) {
10564 nlmsg_free(msg);
10565 return;
10566 }
10567
10568 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10569 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10570 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10571 (req_ie &&
10572 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10573 (resp_ie &&
10574 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10575 goto nla_put_failure;
10576
10577 genlmsg_end(msg, hdr);
10578
10579 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10580 NL80211_MCGRP_MLME, gfp);
10581 return;
10582
10583 nla_put_failure:
10584 genlmsg_cancel(msg, hdr);
10585 nlmsg_free(msg);
10586
10587 }
10588
10589 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10590 struct net_device *netdev, u16 reason,
10591 const u8 *ie, size_t ie_len, bool from_ap)
10592 {
10593 struct sk_buff *msg;
10594 void *hdr;
10595
10596 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10597 if (!msg)
10598 return;
10599
10600 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10601 if (!hdr) {
10602 nlmsg_free(msg);
10603 return;
10604 }
10605
10606 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10607 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10608 (from_ap && reason &&
10609 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10610 (from_ap &&
10611 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10612 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10613 goto nla_put_failure;
10614
10615 genlmsg_end(msg, hdr);
10616
10617 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10618 NL80211_MCGRP_MLME, GFP_KERNEL);
10619 return;
10620
10621 nla_put_failure:
10622 genlmsg_cancel(msg, hdr);
10623 nlmsg_free(msg);
10624
10625 }
10626
10627 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10628 struct net_device *netdev, const u8 *bssid,
10629 gfp_t gfp)
10630 {
10631 struct sk_buff *msg;
10632 void *hdr;
10633
10634 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10635 if (!msg)
10636 return;
10637
10638 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10639 if (!hdr) {
10640 nlmsg_free(msg);
10641 return;
10642 }
10643
10644 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10645 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10646 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10647 goto nla_put_failure;
10648
10649 genlmsg_end(msg, hdr);
10650
10651 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10652 NL80211_MCGRP_MLME, gfp);
10653 return;
10654
10655 nla_put_failure:
10656 genlmsg_cancel(msg, hdr);
10657 nlmsg_free(msg);
10658 }
10659
10660 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10661 const u8* ie, u8 ie_len, gfp_t gfp)
10662 {
10663 struct wireless_dev *wdev = dev->ieee80211_ptr;
10664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10665 struct sk_buff *msg;
10666 void *hdr;
10667
10668 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10669 return;
10670
10671 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10672
10673 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10674 if (!msg)
10675 return;
10676
10677 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10678 if (!hdr) {
10679 nlmsg_free(msg);
10680 return;
10681 }
10682
10683 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10684 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10685 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10686 (ie_len && ie &&
10687 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10688 goto nla_put_failure;
10689
10690 genlmsg_end(msg, hdr);
10691
10692 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10693 NL80211_MCGRP_MLME, gfp);
10694 return;
10695
10696 nla_put_failure:
10697 genlmsg_cancel(msg, hdr);
10698 nlmsg_free(msg);
10699 }
10700 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10701
10702 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10703 struct net_device *netdev, const u8 *addr,
10704 enum nl80211_key_type key_type, int key_id,
10705 const u8 *tsc, gfp_t gfp)
10706 {
10707 struct sk_buff *msg;
10708 void *hdr;
10709
10710 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10711 if (!msg)
10712 return;
10713
10714 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10715 if (!hdr) {
10716 nlmsg_free(msg);
10717 return;
10718 }
10719
10720 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10721 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10722 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10723 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10724 (key_id != -1 &&
10725 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10726 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10727 goto nla_put_failure;
10728
10729 genlmsg_end(msg, hdr);
10730
10731 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10732 NL80211_MCGRP_MLME, gfp);
10733 return;
10734
10735 nla_put_failure:
10736 genlmsg_cancel(msg, hdr);
10737 nlmsg_free(msg);
10738 }
10739
10740 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10741 struct ieee80211_channel *channel_before,
10742 struct ieee80211_channel *channel_after)
10743 {
10744 struct sk_buff *msg;
10745 void *hdr;
10746 struct nlattr *nl_freq;
10747
10748 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10749 if (!msg)
10750 return;
10751
10752 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10753 if (!hdr) {
10754 nlmsg_free(msg);
10755 return;
10756 }
10757
10758 /*
10759 * Since we are applying the beacon hint to a wiphy we know its
10760 * wiphy_idx is valid
10761 */
10762 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10763 goto nla_put_failure;
10764
10765 /* Before */
10766 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10767 if (!nl_freq)
10768 goto nla_put_failure;
10769 if (nl80211_msg_put_channel(msg, channel_before, false))
10770 goto nla_put_failure;
10771 nla_nest_end(msg, nl_freq);
10772
10773 /* After */
10774 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10775 if (!nl_freq)
10776 goto nla_put_failure;
10777 if (nl80211_msg_put_channel(msg, channel_after, false))
10778 goto nla_put_failure;
10779 nla_nest_end(msg, nl_freq);
10780
10781 genlmsg_end(msg, hdr);
10782
10783 rcu_read_lock();
10784 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10785 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10786 rcu_read_unlock();
10787
10788 return;
10789
10790 nla_put_failure:
10791 genlmsg_cancel(msg, hdr);
10792 nlmsg_free(msg);
10793 }
10794
10795 static void nl80211_send_remain_on_chan_event(
10796 int cmd, struct cfg80211_registered_device *rdev,
10797 struct wireless_dev *wdev, u64 cookie,
10798 struct ieee80211_channel *chan,
10799 unsigned int duration, gfp_t gfp)
10800 {
10801 struct sk_buff *msg;
10802 void *hdr;
10803
10804 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10805 if (!msg)
10806 return;
10807
10808 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10809 if (!hdr) {
10810 nlmsg_free(msg);
10811 return;
10812 }
10813
10814 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10815 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10816 wdev->netdev->ifindex)) ||
10817 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10818 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10819 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10820 NL80211_CHAN_NO_HT) ||
10821 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10822 goto nla_put_failure;
10823
10824 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10825 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10826 goto nla_put_failure;
10827
10828 genlmsg_end(msg, hdr);
10829
10830 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10831 NL80211_MCGRP_MLME, gfp);
10832 return;
10833
10834 nla_put_failure:
10835 genlmsg_cancel(msg, hdr);
10836 nlmsg_free(msg);
10837 }
10838
10839 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10840 struct ieee80211_channel *chan,
10841 unsigned int duration, gfp_t gfp)
10842 {
10843 struct wiphy *wiphy = wdev->wiphy;
10844 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10845
10846 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10847 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10848 rdev, wdev, cookie, chan,
10849 duration, gfp);
10850 }
10851 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10852
10853 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10854 struct ieee80211_channel *chan,
10855 gfp_t gfp)
10856 {
10857 struct wiphy *wiphy = wdev->wiphy;
10858 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10859
10860 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10861 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10862 rdev, wdev, cookie, chan, 0, gfp);
10863 }
10864 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10865
10866 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10867 struct station_info *sinfo, gfp_t gfp)
10868 {
10869 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10870 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10871 struct sk_buff *msg;
10872
10873 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10874
10875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10876 if (!msg)
10877 return;
10878
10879 if (nl80211_send_station(msg, 0, 0, 0,
10880 rdev, dev, mac_addr, sinfo) < 0) {
10881 nlmsg_free(msg);
10882 return;
10883 }
10884
10885 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10886 NL80211_MCGRP_MLME, gfp);
10887 }
10888 EXPORT_SYMBOL(cfg80211_new_sta);
10889
10890 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10891 {
10892 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10893 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10894 struct sk_buff *msg;
10895 void *hdr;
10896
10897 trace_cfg80211_del_sta(dev, mac_addr);
10898
10899 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10900 if (!msg)
10901 return;
10902
10903 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10904 if (!hdr) {
10905 nlmsg_free(msg);
10906 return;
10907 }
10908
10909 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10910 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10911 goto nla_put_failure;
10912
10913 genlmsg_end(msg, hdr);
10914
10915 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10916 NL80211_MCGRP_MLME, gfp);
10917 return;
10918
10919 nla_put_failure:
10920 genlmsg_cancel(msg, hdr);
10921 nlmsg_free(msg);
10922 }
10923 EXPORT_SYMBOL(cfg80211_del_sta);
10924
10925 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10926 enum nl80211_connect_failed_reason reason,
10927 gfp_t gfp)
10928 {
10929 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10930 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10931 struct sk_buff *msg;
10932 void *hdr;
10933
10934 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10935 if (!msg)
10936 return;
10937
10938 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10939 if (!hdr) {
10940 nlmsg_free(msg);
10941 return;
10942 }
10943
10944 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10945 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10946 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10947 goto nla_put_failure;
10948
10949 genlmsg_end(msg, hdr);
10950
10951 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10952 NL80211_MCGRP_MLME, gfp);
10953 return;
10954
10955 nla_put_failure:
10956 genlmsg_cancel(msg, hdr);
10957 nlmsg_free(msg);
10958 }
10959 EXPORT_SYMBOL(cfg80211_conn_failed);
10960
10961 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10962 const u8 *addr, gfp_t gfp)
10963 {
10964 struct wireless_dev *wdev = dev->ieee80211_ptr;
10965 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10966 struct sk_buff *msg;
10967 void *hdr;
10968 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10969
10970 if (!nlportid)
10971 return false;
10972
10973 msg = nlmsg_new(100, gfp);
10974 if (!msg)
10975 return true;
10976
10977 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10978 if (!hdr) {
10979 nlmsg_free(msg);
10980 return true;
10981 }
10982
10983 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10984 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10985 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10986 goto nla_put_failure;
10987
10988 genlmsg_end(msg, hdr);
10989 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10990 return true;
10991
10992 nla_put_failure:
10993 genlmsg_cancel(msg, hdr);
10994 nlmsg_free(msg);
10995 return true;
10996 }
10997
10998 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10999 const u8 *addr, gfp_t gfp)
11000 {
11001 struct wireless_dev *wdev = dev->ieee80211_ptr;
11002 bool ret;
11003
11004 trace_cfg80211_rx_spurious_frame(dev, addr);
11005
11006 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11007 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11008 trace_cfg80211_return_bool(false);
11009 return false;
11010 }
11011 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11012 addr, gfp);
11013 trace_cfg80211_return_bool(ret);
11014 return ret;
11015 }
11016 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11017
11018 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11019 const u8 *addr, gfp_t gfp)
11020 {
11021 struct wireless_dev *wdev = dev->ieee80211_ptr;
11022 bool ret;
11023
11024 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11025
11026 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11027 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11028 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11029 trace_cfg80211_return_bool(false);
11030 return false;
11031 }
11032 ret = __nl80211_unexpected_frame(dev,
11033 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11034 addr, gfp);
11035 trace_cfg80211_return_bool(ret);
11036 return ret;
11037 }
11038 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11039
11040 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11041 struct wireless_dev *wdev, u32 nlportid,
11042 int freq, int sig_dbm,
11043 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11044 {
11045 struct net_device *netdev = wdev->netdev;
11046 struct sk_buff *msg;
11047 void *hdr;
11048
11049 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11050 if (!msg)
11051 return -ENOMEM;
11052
11053 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11054 if (!hdr) {
11055 nlmsg_free(msg);
11056 return -ENOMEM;
11057 }
11058
11059 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11060 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11061 netdev->ifindex)) ||
11062 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11063 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11064 (sig_dbm &&
11065 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11066 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11067 (flags &&
11068 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11069 goto nla_put_failure;
11070
11071 genlmsg_end(msg, hdr);
11072
11073 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11074
11075 nla_put_failure:
11076 genlmsg_cancel(msg, hdr);
11077 nlmsg_free(msg);
11078 return -ENOBUFS;
11079 }
11080
11081 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11082 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11083 {
11084 struct wiphy *wiphy = wdev->wiphy;
11085 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11086 struct net_device *netdev = wdev->netdev;
11087 struct sk_buff *msg;
11088 void *hdr;
11089
11090 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11091
11092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11093 if (!msg)
11094 return;
11095
11096 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11097 if (!hdr) {
11098 nlmsg_free(msg);
11099 return;
11100 }
11101
11102 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11103 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11104 netdev->ifindex)) ||
11105 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11106 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11107 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11108 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11109 goto nla_put_failure;
11110
11111 genlmsg_end(msg, hdr);
11112
11113 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11114 NL80211_MCGRP_MLME, gfp);
11115 return;
11116
11117 nla_put_failure:
11118 genlmsg_cancel(msg, hdr);
11119 nlmsg_free(msg);
11120 }
11121 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11122
11123 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11124 enum nl80211_cqm_rssi_threshold_event rssi_event,
11125 gfp_t gfp)
11126 {
11127 struct wireless_dev *wdev = dev->ieee80211_ptr;
11128 struct wiphy *wiphy = wdev->wiphy;
11129 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11130 struct sk_buff *msg;
11131 struct nlattr *pinfoattr;
11132 void *hdr;
11133
11134 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11135
11136 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11137 if (!msg)
11138 return;
11139
11140 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11141 if (!hdr) {
11142 nlmsg_free(msg);
11143 return;
11144 }
11145
11146 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11147 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11148 goto nla_put_failure;
11149
11150 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11151 if (!pinfoattr)
11152 goto nla_put_failure;
11153
11154 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11155 rssi_event))
11156 goto nla_put_failure;
11157
11158 nla_nest_end(msg, pinfoattr);
11159
11160 genlmsg_end(msg, hdr);
11161
11162 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11163 NL80211_MCGRP_MLME, gfp);
11164 return;
11165
11166 nla_put_failure:
11167 genlmsg_cancel(msg, hdr);
11168 nlmsg_free(msg);
11169 }
11170 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11171
11172 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11173 struct net_device *netdev, const u8 *bssid,
11174 const u8 *replay_ctr, gfp_t gfp)
11175 {
11176 struct sk_buff *msg;
11177 struct nlattr *rekey_attr;
11178 void *hdr;
11179
11180 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11181 if (!msg)
11182 return;
11183
11184 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11185 if (!hdr) {
11186 nlmsg_free(msg);
11187 return;
11188 }
11189
11190 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11191 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11192 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11193 goto nla_put_failure;
11194
11195 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11196 if (!rekey_attr)
11197 goto nla_put_failure;
11198
11199 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11200 NL80211_REPLAY_CTR_LEN, replay_ctr))
11201 goto nla_put_failure;
11202
11203 nla_nest_end(msg, rekey_attr);
11204
11205 genlmsg_end(msg, hdr);
11206
11207 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11208 NL80211_MCGRP_MLME, gfp);
11209 return;
11210
11211 nla_put_failure:
11212 genlmsg_cancel(msg, hdr);
11213 nlmsg_free(msg);
11214 }
11215
11216 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11217 const u8 *replay_ctr, gfp_t gfp)
11218 {
11219 struct wireless_dev *wdev = dev->ieee80211_ptr;
11220 struct wiphy *wiphy = wdev->wiphy;
11221 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11222
11223 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11224 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11225 }
11226 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11227
11228 static void
11229 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11230 struct net_device *netdev, int index,
11231 const u8 *bssid, bool preauth, gfp_t gfp)
11232 {
11233 struct sk_buff *msg;
11234 struct nlattr *attr;
11235 void *hdr;
11236
11237 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11238 if (!msg)
11239 return;
11240
11241 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11242 if (!hdr) {
11243 nlmsg_free(msg);
11244 return;
11245 }
11246
11247 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11248 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11249 goto nla_put_failure;
11250
11251 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11252 if (!attr)
11253 goto nla_put_failure;
11254
11255 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11256 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11257 (preauth &&
11258 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11259 goto nla_put_failure;
11260
11261 nla_nest_end(msg, attr);
11262
11263 genlmsg_end(msg, hdr);
11264
11265 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11266 NL80211_MCGRP_MLME, gfp);
11267 return;
11268
11269 nla_put_failure:
11270 genlmsg_cancel(msg, hdr);
11271 nlmsg_free(msg);
11272 }
11273
11274 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11275 const u8 *bssid, bool preauth, gfp_t gfp)
11276 {
11277 struct wireless_dev *wdev = dev->ieee80211_ptr;
11278 struct wiphy *wiphy = wdev->wiphy;
11279 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11280
11281 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11282 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11283 }
11284 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11285
11286 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11287 struct net_device *netdev,
11288 struct cfg80211_chan_def *chandef,
11289 gfp_t gfp)
11290 {
11291 struct sk_buff *msg;
11292 void *hdr;
11293
11294 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11295 if (!msg)
11296 return;
11297
11298 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11299 if (!hdr) {
11300 nlmsg_free(msg);
11301 return;
11302 }
11303
11304 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11305 goto nla_put_failure;
11306
11307 if (nl80211_send_chandef(msg, chandef))
11308 goto nla_put_failure;
11309
11310 genlmsg_end(msg, hdr);
11311
11312 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11313 NL80211_MCGRP_MLME, gfp);
11314 return;
11315
11316 nla_put_failure:
11317 genlmsg_cancel(msg, hdr);
11318 nlmsg_free(msg);
11319 }
11320
11321 void cfg80211_ch_switch_notify(struct net_device *dev,
11322 struct cfg80211_chan_def *chandef)
11323 {
11324 struct wireless_dev *wdev = dev->ieee80211_ptr;
11325 struct wiphy *wiphy = wdev->wiphy;
11326 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11327
11328 ASSERT_WDEV_LOCK(wdev);
11329
11330 trace_cfg80211_ch_switch_notify(dev, chandef);
11331
11332 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11333 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11334 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11335 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11336 return;
11337
11338 wdev->chandef = *chandef;
11339 wdev->preset_chandef = *chandef;
11340 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11341 }
11342 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11343
11344 void cfg80211_cqm_txe_notify(struct net_device *dev,
11345 const u8 *peer, u32 num_packets,
11346 u32 rate, u32 intvl, gfp_t gfp)
11347 {
11348 struct wireless_dev *wdev = dev->ieee80211_ptr;
11349 struct wiphy *wiphy = wdev->wiphy;
11350 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11351 struct sk_buff *msg;
11352 struct nlattr *pinfoattr;
11353 void *hdr;
11354
11355 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11356 if (!msg)
11357 return;
11358
11359 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11360 if (!hdr) {
11361 nlmsg_free(msg);
11362 return;
11363 }
11364
11365 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11366 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11367 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11368 goto nla_put_failure;
11369
11370 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11371 if (!pinfoattr)
11372 goto nla_put_failure;
11373
11374 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11375 goto nla_put_failure;
11376
11377 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11378 goto nla_put_failure;
11379
11380 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11381 goto nla_put_failure;
11382
11383 nla_nest_end(msg, pinfoattr);
11384
11385 genlmsg_end(msg, hdr);
11386
11387 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11388 NL80211_MCGRP_MLME, gfp);
11389 return;
11390
11391 nla_put_failure:
11392 genlmsg_cancel(msg, hdr);
11393 nlmsg_free(msg);
11394 }
11395 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11396
11397 void
11398 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11399 const struct cfg80211_chan_def *chandef,
11400 enum nl80211_radar_event event,
11401 struct net_device *netdev, gfp_t gfp)
11402 {
11403 struct sk_buff *msg;
11404 void *hdr;
11405
11406 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11407 if (!msg)
11408 return;
11409
11410 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11411 if (!hdr) {
11412 nlmsg_free(msg);
11413 return;
11414 }
11415
11416 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11417 goto nla_put_failure;
11418
11419 /* NOP and radar events don't need a netdev parameter */
11420 if (netdev) {
11421 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11422
11423 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11424 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11425 goto nla_put_failure;
11426 }
11427
11428 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11429 goto nla_put_failure;
11430
11431 if (nl80211_send_chandef(msg, chandef))
11432 goto nla_put_failure;
11433
11434 genlmsg_end(msg, hdr);
11435
11436 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11437 NL80211_MCGRP_MLME, gfp);
11438 return;
11439
11440 nla_put_failure:
11441 genlmsg_cancel(msg, hdr);
11442 nlmsg_free(msg);
11443 }
11444
11445 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11446 const u8 *peer, u32 num_packets, gfp_t gfp)
11447 {
11448 struct wireless_dev *wdev = dev->ieee80211_ptr;
11449 struct wiphy *wiphy = wdev->wiphy;
11450 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11451 struct sk_buff *msg;
11452 struct nlattr *pinfoattr;
11453 void *hdr;
11454
11455 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11456
11457 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11458 if (!msg)
11459 return;
11460
11461 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11462 if (!hdr) {
11463 nlmsg_free(msg);
11464 return;
11465 }
11466
11467 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11468 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11469 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11470 goto nla_put_failure;
11471
11472 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11473 if (!pinfoattr)
11474 goto nla_put_failure;
11475
11476 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11477 goto nla_put_failure;
11478
11479 nla_nest_end(msg, pinfoattr);
11480
11481 genlmsg_end(msg, hdr);
11482
11483 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11484 NL80211_MCGRP_MLME, gfp);
11485 return;
11486
11487 nla_put_failure:
11488 genlmsg_cancel(msg, hdr);
11489 nlmsg_free(msg);
11490 }
11491 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11492
11493 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11494 u64 cookie, bool acked, gfp_t gfp)
11495 {
11496 struct wireless_dev *wdev = dev->ieee80211_ptr;
11497 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11498 struct sk_buff *msg;
11499 void *hdr;
11500
11501 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11502
11503 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11504
11505 if (!msg)
11506 return;
11507
11508 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11509 if (!hdr) {
11510 nlmsg_free(msg);
11511 return;
11512 }
11513
11514 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11515 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11516 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11517 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11518 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11519 goto nla_put_failure;
11520
11521 genlmsg_end(msg, hdr);
11522
11523 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11524 NL80211_MCGRP_MLME, gfp);
11525 return;
11526
11527 nla_put_failure:
11528 genlmsg_cancel(msg, hdr);
11529 nlmsg_free(msg);
11530 }
11531 EXPORT_SYMBOL(cfg80211_probe_status);
11532
11533 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11534 const u8 *frame, size_t len,
11535 int freq, int sig_dbm)
11536 {
11537 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11538 struct sk_buff *msg;
11539 void *hdr;
11540 struct cfg80211_beacon_registration *reg;
11541
11542 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11543
11544 spin_lock_bh(&rdev->beacon_registrations_lock);
11545 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11546 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11547 if (!msg) {
11548 spin_unlock_bh(&rdev->beacon_registrations_lock);
11549 return;
11550 }
11551
11552 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11553 if (!hdr)
11554 goto nla_put_failure;
11555
11556 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11557 (freq &&
11558 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11559 (sig_dbm &&
11560 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11561 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11562 goto nla_put_failure;
11563
11564 genlmsg_end(msg, hdr);
11565
11566 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11567 }
11568 spin_unlock_bh(&rdev->beacon_registrations_lock);
11569 return;
11570
11571 nla_put_failure:
11572 spin_unlock_bh(&rdev->beacon_registrations_lock);
11573 if (hdr)
11574 genlmsg_cancel(msg, hdr);
11575 nlmsg_free(msg);
11576 }
11577 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11578
11579 #ifdef CONFIG_PM
11580 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11581 struct cfg80211_wowlan_wakeup *wakeup,
11582 gfp_t gfp)
11583 {
11584 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11585 struct sk_buff *msg;
11586 void *hdr;
11587 int size = 200;
11588
11589 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11590
11591 if (wakeup)
11592 size += wakeup->packet_present_len;
11593
11594 msg = nlmsg_new(size, gfp);
11595 if (!msg)
11596 return;
11597
11598 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11599 if (!hdr)
11600 goto free_msg;
11601
11602 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11603 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11604 goto free_msg;
11605
11606 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11607 wdev->netdev->ifindex))
11608 goto free_msg;
11609
11610 if (wakeup) {
11611 struct nlattr *reasons;
11612
11613 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11614 if (!reasons)
11615 goto free_msg;
11616
11617 if (wakeup->disconnect &&
11618 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11619 goto free_msg;
11620 if (wakeup->magic_pkt &&
11621 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11622 goto free_msg;
11623 if (wakeup->gtk_rekey_failure &&
11624 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11625 goto free_msg;
11626 if (wakeup->eap_identity_req &&
11627 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11628 goto free_msg;
11629 if (wakeup->four_way_handshake &&
11630 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11631 goto free_msg;
11632 if (wakeup->rfkill_release &&
11633 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11634 goto free_msg;
11635
11636 if (wakeup->pattern_idx >= 0 &&
11637 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11638 wakeup->pattern_idx))
11639 goto free_msg;
11640
11641 if (wakeup->tcp_match &&
11642 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11643 goto free_msg;
11644
11645 if (wakeup->tcp_connlost &&
11646 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11647 goto free_msg;
11648
11649 if (wakeup->tcp_nomoretokens &&
11650 nla_put_flag(msg,
11651 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11652 goto free_msg;
11653
11654 if (wakeup->packet) {
11655 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11656 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11657
11658 if (!wakeup->packet_80211) {
11659 pkt_attr =
11660 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11661 len_attr =
11662 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11663 }
11664
11665 if (wakeup->packet_len &&
11666 nla_put_u32(msg, len_attr, wakeup->packet_len))
11667 goto free_msg;
11668
11669 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11670 wakeup->packet))
11671 goto free_msg;
11672 }
11673
11674 nla_nest_end(msg, reasons);
11675 }
11676
11677 genlmsg_end(msg, hdr);
11678
11679 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11680 NL80211_MCGRP_MLME, gfp);
11681 return;
11682
11683 free_msg:
11684 nlmsg_free(msg);
11685 }
11686 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11687 #endif
11688
11689 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11690 enum nl80211_tdls_operation oper,
11691 u16 reason_code, gfp_t gfp)
11692 {
11693 struct wireless_dev *wdev = dev->ieee80211_ptr;
11694 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11695 struct sk_buff *msg;
11696 void *hdr;
11697
11698 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11699 reason_code);
11700
11701 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11702 if (!msg)
11703 return;
11704
11705 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11706 if (!hdr) {
11707 nlmsg_free(msg);
11708 return;
11709 }
11710
11711 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11712 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11713 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11714 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11715 (reason_code > 0 &&
11716 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11717 goto nla_put_failure;
11718
11719 genlmsg_end(msg, hdr);
11720
11721 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11722 NL80211_MCGRP_MLME, gfp);
11723 return;
11724
11725 nla_put_failure:
11726 genlmsg_cancel(msg, hdr);
11727 nlmsg_free(msg);
11728 }
11729 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11730
11731 static int nl80211_netlink_notify(struct notifier_block * nb,
11732 unsigned long state,
11733 void *_notify)
11734 {
11735 struct netlink_notify *notify = _notify;
11736 struct cfg80211_registered_device *rdev;
11737 struct wireless_dev *wdev;
11738 struct cfg80211_beacon_registration *reg, *tmp;
11739
11740 if (state != NETLINK_URELEASE)
11741 return NOTIFY_DONE;
11742
11743 rcu_read_lock();
11744
11745 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11746 bool schedule_destroy_work = false;
11747
11748 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
11749 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11750
11751 if (wdev->owner_nlportid == notify->portid)
11752 schedule_destroy_work = true;
11753 }
11754
11755 spin_lock_bh(&rdev->beacon_registrations_lock);
11756 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11757 list) {
11758 if (reg->nlportid == notify->portid) {
11759 list_del(&reg->list);
11760 kfree(reg);
11761 break;
11762 }
11763 }
11764 spin_unlock_bh(&rdev->beacon_registrations_lock);
11765
11766 if (schedule_destroy_work) {
11767 struct cfg80211_iface_destroy *destroy;
11768
11769 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
11770 if (destroy) {
11771 destroy->nlportid = notify->portid;
11772 spin_lock(&rdev->destroy_list_lock);
11773 list_add(&destroy->list, &rdev->destroy_list);
11774 spin_unlock(&rdev->destroy_list_lock);
11775 schedule_work(&rdev->destroy_work);
11776 }
11777 }
11778 }
11779
11780 rcu_read_unlock();
11781
11782 return NOTIFY_OK;
11783 }
11784
11785 static struct notifier_block nl80211_netlink_notifier = {
11786 .notifier_call = nl80211_netlink_notify,
11787 };
11788
11789 void cfg80211_ft_event(struct net_device *netdev,
11790 struct cfg80211_ft_event_params *ft_event)
11791 {
11792 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11793 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11794 struct sk_buff *msg;
11795 void *hdr;
11796
11797 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11798
11799 if (!ft_event->target_ap)
11800 return;
11801
11802 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11803 if (!msg)
11804 return;
11805
11806 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11807 if (!hdr)
11808 goto out;
11809
11810 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11811 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11812 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
11813 goto out;
11814
11815 if (ft_event->ies &&
11816 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
11817 goto out;
11818 if (ft_event->ric_ies &&
11819 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11820 ft_event->ric_ies))
11821 goto out;
11822
11823 genlmsg_end(msg, hdr);
11824
11825 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11826 NL80211_MCGRP_MLME, GFP_KERNEL);
11827 return;
11828 out:
11829 nlmsg_free(msg);
11830 }
11831 EXPORT_SYMBOL(cfg80211_ft_event);
11832
11833 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11834 {
11835 struct cfg80211_registered_device *rdev;
11836 struct sk_buff *msg;
11837 void *hdr;
11838 u32 nlportid;
11839
11840 rdev = wiphy_to_rdev(wdev->wiphy);
11841 if (!rdev->crit_proto_nlportid)
11842 return;
11843
11844 nlportid = rdev->crit_proto_nlportid;
11845 rdev->crit_proto_nlportid = 0;
11846
11847 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11848 if (!msg)
11849 return;
11850
11851 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11852 if (!hdr)
11853 goto nla_put_failure;
11854
11855 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11856 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11857 goto nla_put_failure;
11858
11859 genlmsg_end(msg, hdr);
11860
11861 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11862 return;
11863
11864 nla_put_failure:
11865 if (hdr)
11866 genlmsg_cancel(msg, hdr);
11867 nlmsg_free(msg);
11868
11869 }
11870 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11871
11872 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
11873 {
11874 struct wiphy *wiphy = wdev->wiphy;
11875 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11876 struct sk_buff *msg;
11877 void *hdr;
11878
11879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11880 if (!msg)
11881 return;
11882
11883 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
11884 if (!hdr)
11885 goto out;
11886
11887 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11888 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
11889 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11890 goto out;
11891
11892 genlmsg_end(msg, hdr);
11893
11894 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
11895 NL80211_MCGRP_MLME, GFP_KERNEL);
11896 return;
11897 out:
11898 nlmsg_free(msg);
11899 }
11900
11901 /* initialisation/exit functions */
11902
11903 int nl80211_init(void)
11904 {
11905 int err;
11906
11907 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
11908 nl80211_mcgrps);
11909 if (err)
11910 return err;
11911
11912 err = netlink_register_notifier(&nl80211_netlink_notifier);
11913 if (err)
11914 goto err_out;
11915
11916 return 0;
11917 err_out:
11918 genl_unregister_family(&nl80211_fam);
11919 return err;
11920 }
11921
11922 void nl80211_exit(void)
11923 {
11924 netlink_unregister_notifier(&nl80211_netlink_notifier);
11925 genl_unregister_family(&nl80211_fam);
11926 }
Linux kernel - Deliverables
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