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Merge tag 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux...
[deliverable/linux.git] / net / wireless / nl80211.c
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CommitLineData
1/*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8#include <linux/if.h>
9#include <linux/module.h>
10#include <linux/err.h>
11#include <linux/slab.h>
12#include <linux/list.h>
13#include <linux/if_ether.h>
14#include <linux/ieee80211.h>
15#include <linux/nl80211.h>
16#include <linux/rtnetlink.h>
17#include <linux/netlink.h>
18#include <linux/etherdevice.h>
19#include <net/net_namespace.h>
20#include <net/genetlink.h>
21#include <net/cfg80211.h>
22#include <net/sock.h>
23#include <net/inet_connection_sock.h>
24#include "core.h"
25#include "nl80211.h"
26#include "reg.h"
27#include "rdev-ops.h"
28
29static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39/* the netlink family */
40static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49};
50
51/* multicast groups */
52enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59};
60
61static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
67#ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
69#endif
70};
71
72/* returns ERR_PTR values */
73static struct wireless_dev *
74__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75{
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124}
125
126static struct cfg80211_registered_device *
127__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128{
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196}
197
198/*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205static struct cfg80211_registered_device *
206cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207{
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209}
210
211/* policy for the attributes */
212static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
400 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
401 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
402};
403
404/* policy for the key attributes */
405static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
406 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
407 [NL80211_KEY_IDX] = { .type = NLA_U8 },
408 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
409 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
410 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
411 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
412 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
413 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
414};
415
416/* policy for the key default flags */
417static const struct nla_policy
418nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
419 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
420 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
421};
422
423/* policy for WoWLAN attributes */
424static const struct nla_policy
425nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
426 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
430 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
431 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
433 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
435 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
436};
437
438static const struct nla_policy
439nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
440 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
441 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
442 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
443 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
444 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
445 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
447 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
448 },
449 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
450 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
451 },
452 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
453 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
454 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
455};
456
457/* policy for coalesce rule attributes */
458static const struct nla_policy
459nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
460 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
461 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
462 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
463};
464
465/* policy for GTK rekey offload attributes */
466static const struct nla_policy
467nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
468 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
469 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
470 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
471};
472
473static const struct nla_policy
474nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
475 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
476 .len = IEEE80211_MAX_SSID_LEN },
477 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
478};
479
480static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
481 struct netlink_callback *cb,
482 struct cfg80211_registered_device **rdev,
483 struct wireless_dev **wdev)
484{
485 int err;
486
487 rtnl_lock();
488
489 if (!cb->args[0]) {
490 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
491 nl80211_fam.attrbuf, nl80211_fam.maxattr,
492 nl80211_policy);
493 if (err)
494 goto out_unlock;
495
496 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
497 nl80211_fam.attrbuf);
498 if (IS_ERR(*wdev)) {
499 err = PTR_ERR(*wdev);
500 goto out_unlock;
501 }
502 *rdev = wiphy_to_rdev((*wdev)->wiphy);
503 /* 0 is the first index - add 1 to parse only once */
504 cb->args[0] = (*rdev)->wiphy_idx + 1;
505 cb->args[1] = (*wdev)->identifier;
506 } else {
507 /* subtract the 1 again here */
508 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
509 struct wireless_dev *tmp;
510
511 if (!wiphy) {
512 err = -ENODEV;
513 goto out_unlock;
514 }
515 *rdev = wiphy_to_rdev(wiphy);
516 *wdev = NULL;
517
518 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
519 if (tmp->identifier == cb->args[1]) {
520 *wdev = tmp;
521 break;
522 }
523 }
524
525 if (!*wdev) {
526 err = -ENODEV;
527 goto out_unlock;
528 }
529 }
530
531 return 0;
532 out_unlock:
533 rtnl_unlock();
534 return err;
535}
536
537static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
538{
539 rtnl_unlock();
540}
541
542/* IE validation */
543static bool is_valid_ie_attr(const struct nlattr *attr)
544{
545 const u8 *pos;
546 int len;
547
548 if (!attr)
549 return true;
550
551 pos = nla_data(attr);
552 len = nla_len(attr);
553
554 while (len) {
555 u8 elemlen;
556
557 if (len < 2)
558 return false;
559 len -= 2;
560
561 elemlen = pos[1];
562 if (elemlen > len)
563 return false;
564
565 len -= elemlen;
566 pos += 2 + elemlen;
567 }
568
569 return true;
570}
571
572/* message building helper */
573static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
574 int flags, u8 cmd)
575{
576 /* since there is no private header just add the generic one */
577 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
578}
579
580static int nl80211_msg_put_channel(struct sk_buff *msg,
581 struct ieee80211_channel *chan,
582 bool large)
583{
584 /* Some channels must be completely excluded from the
585 * list to protect old user-space tools from breaking
586 */
587 if (!large && chan->flags &
588 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
589 return 0;
590
591 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
592 chan->center_freq))
593 goto nla_put_failure;
594
595 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
596 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
597 goto nla_put_failure;
598 if (chan->flags & IEEE80211_CHAN_NO_IR) {
599 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
600 goto nla_put_failure;
601 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
602 goto nla_put_failure;
603 }
604 if (chan->flags & IEEE80211_CHAN_RADAR) {
605 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
606 goto nla_put_failure;
607 if (large) {
608 u32 time;
609
610 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
611
612 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
613 chan->dfs_state))
614 goto nla_put_failure;
615 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
616 time))
617 goto nla_put_failure;
618 if (nla_put_u32(msg,
619 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
620 chan->dfs_cac_ms))
621 goto nla_put_failure;
622 }
623 }
624
625 if (large) {
626 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
627 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
628 goto nla_put_failure;
629 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
630 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
631 goto nla_put_failure;
632 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
633 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
634 goto nla_put_failure;
635 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
637 goto nla_put_failure;
638 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
639 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
640 goto nla_put_failure;
641 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
642 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
643 goto nla_put_failure;
644 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
645 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
646 goto nla_put_failure;
647 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
648 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
649 goto nla_put_failure;
650 }
651
652 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
653 DBM_TO_MBM(chan->max_power)))
654 goto nla_put_failure;
655
656 return 0;
657
658 nla_put_failure:
659 return -ENOBUFS;
660}
661
662/* netlink command implementations */
663
664struct key_parse {
665 struct key_params p;
666 int idx;
667 int type;
668 bool def, defmgmt;
669 bool def_uni, def_multi;
670};
671
672static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
673{
674 struct nlattr *tb[NL80211_KEY_MAX + 1];
675 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
676 nl80211_key_policy);
677 if (err)
678 return err;
679
680 k->def = !!tb[NL80211_KEY_DEFAULT];
681 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
682
683 if (k->def) {
684 k->def_uni = true;
685 k->def_multi = true;
686 }
687 if (k->defmgmt)
688 k->def_multi = true;
689
690 if (tb[NL80211_KEY_IDX])
691 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
692
693 if (tb[NL80211_KEY_DATA]) {
694 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
695 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
696 }
697
698 if (tb[NL80211_KEY_SEQ]) {
699 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
700 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
701 }
702
703 if (tb[NL80211_KEY_CIPHER])
704 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
705
706 if (tb[NL80211_KEY_TYPE]) {
707 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
708 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
709 return -EINVAL;
710 }
711
712 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
713 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
714 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
715 tb[NL80211_KEY_DEFAULT_TYPES],
716 nl80211_key_default_policy);
717 if (err)
718 return err;
719
720 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
721 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
722 }
723
724 return 0;
725}
726
727static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
728{
729 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
730 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
731 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
732 }
733
734 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
735 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
736 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
737 }
738
739 if (info->attrs[NL80211_ATTR_KEY_IDX])
740 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
741
742 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
743 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
744
745 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
746 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
747
748 if (k->def) {
749 k->def_uni = true;
750 k->def_multi = true;
751 }
752 if (k->defmgmt)
753 k->def_multi = true;
754
755 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
756 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
757 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
758 return -EINVAL;
759 }
760
761 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
762 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
763 int err = nla_parse_nested(
764 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
765 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
766 nl80211_key_default_policy);
767 if (err)
768 return err;
769
770 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
771 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
772 }
773
774 return 0;
775}
776
777static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
778{
779 int err;
780
781 memset(k, 0, sizeof(*k));
782 k->idx = -1;
783 k->type = -1;
784
785 if (info->attrs[NL80211_ATTR_KEY])
786 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
787 else
788 err = nl80211_parse_key_old(info, k);
789
790 if (err)
791 return err;
792
793 if (k->def && k->defmgmt)
794 return -EINVAL;
795
796 if (k->defmgmt) {
797 if (k->def_uni || !k->def_multi)
798 return -EINVAL;
799 }
800
801 if (k->idx != -1) {
802 if (k->defmgmt) {
803 if (k->idx < 4 || k->idx > 5)
804 return -EINVAL;
805 } else if (k->def) {
806 if (k->idx < 0 || k->idx > 3)
807 return -EINVAL;
808 } else {
809 if (k->idx < 0 || k->idx > 5)
810 return -EINVAL;
811 }
812 }
813
814 return 0;
815}
816
817static struct cfg80211_cached_keys *
818nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
819 struct nlattr *keys, bool *no_ht)
820{
821 struct key_parse parse;
822 struct nlattr *key;
823 struct cfg80211_cached_keys *result;
824 int rem, err, def = 0;
825
826 result = kzalloc(sizeof(*result), GFP_KERNEL);
827 if (!result)
828 return ERR_PTR(-ENOMEM);
829
830 result->def = -1;
831 result->defmgmt = -1;
832
833 nla_for_each_nested(key, keys, rem) {
834 memset(&parse, 0, sizeof(parse));
835 parse.idx = -1;
836
837 err = nl80211_parse_key_new(key, &parse);
838 if (err)
839 goto error;
840 err = -EINVAL;
841 if (!parse.p.key)
842 goto error;
843 if (parse.idx < 0 || parse.idx > 4)
844 goto error;
845 if (parse.def) {
846 if (def)
847 goto error;
848 def = 1;
849 result->def = parse.idx;
850 if (!parse.def_uni || !parse.def_multi)
851 goto error;
852 } else if (parse.defmgmt)
853 goto error;
854 err = cfg80211_validate_key_settings(rdev, &parse.p,
855 parse.idx, false, NULL);
856 if (err)
857 goto error;
858 result->params[parse.idx].cipher = parse.p.cipher;
859 result->params[parse.idx].key_len = parse.p.key_len;
860 result->params[parse.idx].key = result->data[parse.idx];
861 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
862
863 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
864 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
865 if (no_ht)
866 *no_ht = true;
867 }
868 }
869
870 return result;
871 error:
872 kfree(result);
873 return ERR_PTR(err);
874}
875
876static int nl80211_key_allowed(struct wireless_dev *wdev)
877{
878 ASSERT_WDEV_LOCK(wdev);
879
880 switch (wdev->iftype) {
881 case NL80211_IFTYPE_AP:
882 case NL80211_IFTYPE_AP_VLAN:
883 case NL80211_IFTYPE_P2P_GO:
884 case NL80211_IFTYPE_MESH_POINT:
885 break;
886 case NL80211_IFTYPE_ADHOC:
887 case NL80211_IFTYPE_STATION:
888 case NL80211_IFTYPE_P2P_CLIENT:
889 if (!wdev->current_bss)
890 return -ENOLINK;
891 break;
892 case NL80211_IFTYPE_UNSPECIFIED:
893 case NL80211_IFTYPE_OCB:
894 case NL80211_IFTYPE_MONITOR:
895 case NL80211_IFTYPE_P2P_DEVICE:
896 case NL80211_IFTYPE_WDS:
897 case NUM_NL80211_IFTYPES:
898 return -EINVAL;
899 }
900
901 return 0;
902}
903
904static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
905 struct nlattr *tb)
906{
907 struct ieee80211_channel *chan;
908
909 if (tb == NULL)
910 return NULL;
911 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
912 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
913 return NULL;
914 return chan;
915}
916
917static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
918{
919 struct nlattr *nl_modes = nla_nest_start(msg, attr);
920 int i;
921
922 if (!nl_modes)
923 goto nla_put_failure;
924
925 i = 0;
926 while (ifmodes) {
927 if ((ifmodes & 1) && nla_put_flag(msg, i))
928 goto nla_put_failure;
929 ifmodes >>= 1;
930 i++;
931 }
932
933 nla_nest_end(msg, nl_modes);
934 return 0;
935
936nla_put_failure:
937 return -ENOBUFS;
938}
939
940static int nl80211_put_iface_combinations(struct wiphy *wiphy,
941 struct sk_buff *msg,
942 bool large)
943{
944 struct nlattr *nl_combis;
945 int i, j;
946
947 nl_combis = nla_nest_start(msg,
948 NL80211_ATTR_INTERFACE_COMBINATIONS);
949 if (!nl_combis)
950 goto nla_put_failure;
951
952 for (i = 0; i < wiphy->n_iface_combinations; i++) {
953 const struct ieee80211_iface_combination *c;
954 struct nlattr *nl_combi, *nl_limits;
955
956 c = &wiphy->iface_combinations[i];
957
958 nl_combi = nla_nest_start(msg, i + 1);
959 if (!nl_combi)
960 goto nla_put_failure;
961
962 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
963 if (!nl_limits)
964 goto nla_put_failure;
965
966 for (j = 0; j < c->n_limits; j++) {
967 struct nlattr *nl_limit;
968
969 nl_limit = nla_nest_start(msg, j + 1);
970 if (!nl_limit)
971 goto nla_put_failure;
972 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
973 c->limits[j].max))
974 goto nla_put_failure;
975 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
976 c->limits[j].types))
977 goto nla_put_failure;
978 nla_nest_end(msg, nl_limit);
979 }
980
981 nla_nest_end(msg, nl_limits);
982
983 if (c->beacon_int_infra_match &&
984 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
985 goto nla_put_failure;
986 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
987 c->num_different_channels) ||
988 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
989 c->max_interfaces))
990 goto nla_put_failure;
991 if (large &&
992 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
993 c->radar_detect_widths) ||
994 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
995 c->radar_detect_regions)))
996 goto nla_put_failure;
997
998 nla_nest_end(msg, nl_combi);
999 }
1000
1001 nla_nest_end(msg, nl_combis);
1002
1003 return 0;
1004nla_put_failure:
1005 return -ENOBUFS;
1006}
1007
1008#ifdef CONFIG_PM
1009static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1010 struct sk_buff *msg)
1011{
1012 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1013 struct nlattr *nl_tcp;
1014
1015 if (!tcp)
1016 return 0;
1017
1018 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1019 if (!nl_tcp)
1020 return -ENOBUFS;
1021
1022 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1023 tcp->data_payload_max))
1024 return -ENOBUFS;
1025
1026 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1027 tcp->data_payload_max))
1028 return -ENOBUFS;
1029
1030 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1031 return -ENOBUFS;
1032
1033 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1034 sizeof(*tcp->tok), tcp->tok))
1035 return -ENOBUFS;
1036
1037 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1038 tcp->data_interval_max))
1039 return -ENOBUFS;
1040
1041 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1042 tcp->wake_payload_max))
1043 return -ENOBUFS;
1044
1045 nla_nest_end(msg, nl_tcp);
1046 return 0;
1047}
1048
1049static int nl80211_send_wowlan(struct sk_buff *msg,
1050 struct cfg80211_registered_device *rdev,
1051 bool large)
1052{
1053 struct nlattr *nl_wowlan;
1054
1055 if (!rdev->wiphy.wowlan)
1056 return 0;
1057
1058 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1059 if (!nl_wowlan)
1060 return -ENOBUFS;
1061
1062 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1068 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1070 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1071 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1072 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1073 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1074 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1076 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1077 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1078 return -ENOBUFS;
1079
1080 if (rdev->wiphy.wowlan->n_patterns) {
1081 struct nl80211_pattern_support pat = {
1082 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1083 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1084 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1085 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1086 };
1087
1088 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1089 sizeof(pat), &pat))
1090 return -ENOBUFS;
1091 }
1092
1093 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1094 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1095 rdev->wiphy.wowlan->max_nd_match_sets))
1096 return -ENOBUFS;
1097
1098 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1099 return -ENOBUFS;
1100
1101 /* TODO: send wowlan net detect */
1102
1103 nla_nest_end(msg, nl_wowlan);
1104
1105 return 0;
1106}
1107#endif
1108
1109static int nl80211_send_coalesce(struct sk_buff *msg,
1110 struct cfg80211_registered_device *rdev)
1111{
1112 struct nl80211_coalesce_rule_support rule;
1113
1114 if (!rdev->wiphy.coalesce)
1115 return 0;
1116
1117 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1118 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1119 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1120 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1121 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1122 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1123
1124 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1125 return -ENOBUFS;
1126
1127 return 0;
1128}
1129
1130static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1131 struct ieee80211_supported_band *sband)
1132{
1133 struct nlattr *nl_rates, *nl_rate;
1134 struct ieee80211_rate *rate;
1135 int i;
1136
1137 /* add HT info */
1138 if (sband->ht_cap.ht_supported &&
1139 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1140 sizeof(sband->ht_cap.mcs),
1141 &sband->ht_cap.mcs) ||
1142 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1143 sband->ht_cap.cap) ||
1144 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1145 sband->ht_cap.ampdu_factor) ||
1146 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1147 sband->ht_cap.ampdu_density)))
1148 return -ENOBUFS;
1149
1150 /* add VHT info */
1151 if (sband->vht_cap.vht_supported &&
1152 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1153 sizeof(sband->vht_cap.vht_mcs),
1154 &sband->vht_cap.vht_mcs) ||
1155 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1156 sband->vht_cap.cap)))
1157 return -ENOBUFS;
1158
1159 /* add bitrates */
1160 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1161 if (!nl_rates)
1162 return -ENOBUFS;
1163
1164 for (i = 0; i < sband->n_bitrates; i++) {
1165 nl_rate = nla_nest_start(msg, i);
1166 if (!nl_rate)
1167 return -ENOBUFS;
1168
1169 rate = &sband->bitrates[i];
1170 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1171 rate->bitrate))
1172 return -ENOBUFS;
1173 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1174 nla_put_flag(msg,
1175 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1176 return -ENOBUFS;
1177
1178 nla_nest_end(msg, nl_rate);
1179 }
1180
1181 nla_nest_end(msg, nl_rates);
1182
1183 return 0;
1184}
1185
1186static int
1187nl80211_send_mgmt_stypes(struct sk_buff *msg,
1188 const struct ieee80211_txrx_stypes *mgmt_stypes)
1189{
1190 u16 stypes;
1191 struct nlattr *nl_ftypes, *nl_ifs;
1192 enum nl80211_iftype ift;
1193 int i;
1194
1195 if (!mgmt_stypes)
1196 return 0;
1197
1198 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1199 if (!nl_ifs)
1200 return -ENOBUFS;
1201
1202 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1203 nl_ftypes = nla_nest_start(msg, ift);
1204 if (!nl_ftypes)
1205 return -ENOBUFS;
1206 i = 0;
1207 stypes = mgmt_stypes[ift].tx;
1208 while (stypes) {
1209 if ((stypes & 1) &&
1210 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1211 (i << 4) | IEEE80211_FTYPE_MGMT))
1212 return -ENOBUFS;
1213 stypes >>= 1;
1214 i++;
1215 }
1216 nla_nest_end(msg, nl_ftypes);
1217 }
1218
1219 nla_nest_end(msg, nl_ifs);
1220
1221 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1222 if (!nl_ifs)
1223 return -ENOBUFS;
1224
1225 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1226 nl_ftypes = nla_nest_start(msg, ift);
1227 if (!nl_ftypes)
1228 return -ENOBUFS;
1229 i = 0;
1230 stypes = mgmt_stypes[ift].rx;
1231 while (stypes) {
1232 if ((stypes & 1) &&
1233 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1234 (i << 4) | IEEE80211_FTYPE_MGMT))
1235 return -ENOBUFS;
1236 stypes >>= 1;
1237 i++;
1238 }
1239 nla_nest_end(msg, nl_ftypes);
1240 }
1241 nla_nest_end(msg, nl_ifs);
1242
1243 return 0;
1244}
1245
1246struct nl80211_dump_wiphy_state {
1247 s64 filter_wiphy;
1248 long start;
1249 long split_start, band_start, chan_start;
1250 bool split;
1251};
1252
1253static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1254 enum nl80211_commands cmd,
1255 struct sk_buff *msg, u32 portid, u32 seq,
1256 int flags, struct nl80211_dump_wiphy_state *state)
1257{
1258 void *hdr;
1259 struct nlattr *nl_bands, *nl_band;
1260 struct nlattr *nl_freqs, *nl_freq;
1261 struct nlattr *nl_cmds;
1262 enum ieee80211_band band;
1263 struct ieee80211_channel *chan;
1264 int i;
1265 const struct ieee80211_txrx_stypes *mgmt_stypes =
1266 rdev->wiphy.mgmt_stypes;
1267 u32 features;
1268
1269 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1270 if (!hdr)
1271 return -ENOBUFS;
1272
1273 if (WARN_ON(!state))
1274 return -EINVAL;
1275
1276 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1277 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1278 wiphy_name(&rdev->wiphy)) ||
1279 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1280 cfg80211_rdev_list_generation))
1281 goto nla_put_failure;
1282
1283 if (cmd != NL80211_CMD_NEW_WIPHY)
1284 goto finish;
1285
1286 switch (state->split_start) {
1287 case 0:
1288 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1289 rdev->wiphy.retry_short) ||
1290 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1291 rdev->wiphy.retry_long) ||
1292 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1293 rdev->wiphy.frag_threshold) ||
1294 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1295 rdev->wiphy.rts_threshold) ||
1296 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1297 rdev->wiphy.coverage_class) ||
1298 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1299 rdev->wiphy.max_scan_ssids) ||
1300 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1301 rdev->wiphy.max_sched_scan_ssids) ||
1302 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1303 rdev->wiphy.max_scan_ie_len) ||
1304 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1305 rdev->wiphy.max_sched_scan_ie_len) ||
1306 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1307 rdev->wiphy.max_match_sets))
1308 goto nla_put_failure;
1309
1310 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1311 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1312 goto nla_put_failure;
1313 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1314 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1315 goto nla_put_failure;
1316 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1317 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1318 goto nla_put_failure;
1319 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1320 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1321 goto nla_put_failure;
1322 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1323 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1324 goto nla_put_failure;
1325 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1326 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1327 goto nla_put_failure;
1328 state->split_start++;
1329 if (state->split)
1330 break;
1331 case 1:
1332 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1333 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1334 rdev->wiphy.cipher_suites))
1335 goto nla_put_failure;
1336
1337 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1338 rdev->wiphy.max_num_pmkids))
1339 goto nla_put_failure;
1340
1341 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1342 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1343 goto nla_put_failure;
1344
1345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1346 rdev->wiphy.available_antennas_tx) ||
1347 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1348 rdev->wiphy.available_antennas_rx))
1349 goto nla_put_failure;
1350
1351 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1352 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1353 rdev->wiphy.probe_resp_offload))
1354 goto nla_put_failure;
1355
1356 if ((rdev->wiphy.available_antennas_tx ||
1357 rdev->wiphy.available_antennas_rx) &&
1358 rdev->ops->get_antenna) {
1359 u32 tx_ant = 0, rx_ant = 0;
1360 int res;
1361 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1362 if (!res) {
1363 if (nla_put_u32(msg,
1364 NL80211_ATTR_WIPHY_ANTENNA_TX,
1365 tx_ant) ||
1366 nla_put_u32(msg,
1367 NL80211_ATTR_WIPHY_ANTENNA_RX,
1368 rx_ant))
1369 goto nla_put_failure;
1370 }
1371 }
1372
1373 state->split_start++;
1374 if (state->split)
1375 break;
1376 case 2:
1377 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1378 rdev->wiphy.interface_modes))
1379 goto nla_put_failure;
1380 state->split_start++;
1381 if (state->split)
1382 break;
1383 case 3:
1384 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1385 if (!nl_bands)
1386 goto nla_put_failure;
1387
1388 for (band = state->band_start;
1389 band < IEEE80211_NUM_BANDS; band++) {
1390 struct ieee80211_supported_band *sband;
1391
1392 sband = rdev->wiphy.bands[band];
1393
1394 if (!sband)
1395 continue;
1396
1397 nl_band = nla_nest_start(msg, band);
1398 if (!nl_band)
1399 goto nla_put_failure;
1400
1401 switch (state->chan_start) {
1402 case 0:
1403 if (nl80211_send_band_rateinfo(msg, sband))
1404 goto nla_put_failure;
1405 state->chan_start++;
1406 if (state->split)
1407 break;
1408 default:
1409 /* add frequencies */
1410 nl_freqs = nla_nest_start(
1411 msg, NL80211_BAND_ATTR_FREQS);
1412 if (!nl_freqs)
1413 goto nla_put_failure;
1414
1415 for (i = state->chan_start - 1;
1416 i < sband->n_channels;
1417 i++) {
1418 nl_freq = nla_nest_start(msg, i);
1419 if (!nl_freq)
1420 goto nla_put_failure;
1421
1422 chan = &sband->channels[i];
1423
1424 if (nl80211_msg_put_channel(
1425 msg, chan,
1426 state->split))
1427 goto nla_put_failure;
1428
1429 nla_nest_end(msg, nl_freq);
1430 if (state->split)
1431 break;
1432 }
1433 if (i < sband->n_channels)
1434 state->chan_start = i + 2;
1435 else
1436 state->chan_start = 0;
1437 nla_nest_end(msg, nl_freqs);
1438 }
1439
1440 nla_nest_end(msg, nl_band);
1441
1442 if (state->split) {
1443 /* start again here */
1444 if (state->chan_start)
1445 band--;
1446 break;
1447 }
1448 }
1449 nla_nest_end(msg, nl_bands);
1450
1451 if (band < IEEE80211_NUM_BANDS)
1452 state->band_start = band + 1;
1453 else
1454 state->band_start = 0;
1455
1456 /* if bands & channels are done, continue outside */
1457 if (state->band_start == 0 && state->chan_start == 0)
1458 state->split_start++;
1459 if (state->split)
1460 break;
1461 case 4:
1462 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1463 if (!nl_cmds)
1464 goto nla_put_failure;
1465
1466 i = 0;
1467#define CMD(op, n) \
1468 do { \
1469 if (rdev->ops->op) { \
1470 i++; \
1471 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1472 goto nla_put_failure; \
1473 } \
1474 } while (0)
1475
1476 CMD(add_virtual_intf, NEW_INTERFACE);
1477 CMD(change_virtual_intf, SET_INTERFACE);
1478 CMD(add_key, NEW_KEY);
1479 CMD(start_ap, START_AP);
1480 CMD(add_station, NEW_STATION);
1481 CMD(add_mpath, NEW_MPATH);
1482 CMD(update_mesh_config, SET_MESH_CONFIG);
1483 CMD(change_bss, SET_BSS);
1484 CMD(auth, AUTHENTICATE);
1485 CMD(assoc, ASSOCIATE);
1486 CMD(deauth, DEAUTHENTICATE);
1487 CMD(disassoc, DISASSOCIATE);
1488 CMD(join_ibss, JOIN_IBSS);
1489 CMD(join_mesh, JOIN_MESH);
1490 CMD(set_pmksa, SET_PMKSA);
1491 CMD(del_pmksa, DEL_PMKSA);
1492 CMD(flush_pmksa, FLUSH_PMKSA);
1493 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1494 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1495 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1496 CMD(mgmt_tx, FRAME);
1497 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1498 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1499 i++;
1500 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1501 goto nla_put_failure;
1502 }
1503 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1504 rdev->ops->join_mesh) {
1505 i++;
1506 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1507 goto nla_put_failure;
1508 }
1509 CMD(set_wds_peer, SET_WDS_PEER);
1510 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1511 CMD(tdls_mgmt, TDLS_MGMT);
1512 CMD(tdls_oper, TDLS_OPER);
1513 }
1514 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1515 CMD(sched_scan_start, START_SCHED_SCAN);
1516 CMD(probe_client, PROBE_CLIENT);
1517 CMD(set_noack_map, SET_NOACK_MAP);
1518 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1519 i++;
1520 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1521 goto nla_put_failure;
1522 }
1523 CMD(start_p2p_device, START_P2P_DEVICE);
1524 CMD(set_mcast_rate, SET_MCAST_RATE);
1525#ifdef CONFIG_NL80211_TESTMODE
1526 CMD(testmode_cmd, TESTMODE);
1527#endif
1528 if (state->split) {
1529 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1530 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1531 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1532 CMD(channel_switch, CHANNEL_SWITCH);
1533 CMD(set_qos_map, SET_QOS_MAP);
1534 if (rdev->wiphy.features &
1535 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1536 CMD(add_tx_ts, ADD_TX_TS);
1537 }
1538 /* add into the if now */
1539#undef CMD
1540
1541 if (rdev->ops->connect || rdev->ops->auth) {
1542 i++;
1543 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1544 goto nla_put_failure;
1545 }
1546
1547 if (rdev->ops->disconnect || rdev->ops->deauth) {
1548 i++;
1549 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1550 goto nla_put_failure;
1551 }
1552
1553 nla_nest_end(msg, nl_cmds);
1554 state->split_start++;
1555 if (state->split)
1556 break;
1557 case 5:
1558 if (rdev->ops->remain_on_channel &&
1559 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1560 nla_put_u32(msg,
1561 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1562 rdev->wiphy.max_remain_on_channel_duration))
1563 goto nla_put_failure;
1564
1565 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1566 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1567 goto nla_put_failure;
1568
1569 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1570 goto nla_put_failure;
1571 state->split_start++;
1572 if (state->split)
1573 break;
1574 case 6:
1575#ifdef CONFIG_PM
1576 if (nl80211_send_wowlan(msg, rdev, state->split))
1577 goto nla_put_failure;
1578 state->split_start++;
1579 if (state->split)
1580 break;
1581#else
1582 state->split_start++;
1583#endif
1584 case 7:
1585 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1586 rdev->wiphy.software_iftypes))
1587 goto nla_put_failure;
1588
1589 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1590 state->split))
1591 goto nla_put_failure;
1592
1593 state->split_start++;
1594 if (state->split)
1595 break;
1596 case 8:
1597 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1598 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1599 rdev->wiphy.ap_sme_capa))
1600 goto nla_put_failure;
1601
1602 features = rdev->wiphy.features;
1603 /*
1604 * We can only add the per-channel limit information if the
1605 * dump is split, otherwise it makes it too big. Therefore
1606 * only advertise it in that case.
1607 */
1608 if (state->split)
1609 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1610 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1611 goto nla_put_failure;
1612
1613 if (rdev->wiphy.ht_capa_mod_mask &&
1614 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1615 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1616 rdev->wiphy.ht_capa_mod_mask))
1617 goto nla_put_failure;
1618
1619 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1620 rdev->wiphy.max_acl_mac_addrs &&
1621 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1622 rdev->wiphy.max_acl_mac_addrs))
1623 goto nla_put_failure;
1624
1625 /*
1626 * Any information below this point is only available to
1627 * applications that can deal with it being split. This
1628 * helps ensure that newly added capabilities don't break
1629 * older tools by overrunning their buffers.
1630 *
1631 * We still increment split_start so that in the split
1632 * case we'll continue with more data in the next round,
1633 * but break unconditionally so unsplit data stops here.
1634 */
1635 state->split_start++;
1636 break;
1637 case 9:
1638 if (rdev->wiphy.extended_capabilities &&
1639 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1640 rdev->wiphy.extended_capabilities_len,
1641 rdev->wiphy.extended_capabilities) ||
1642 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1643 rdev->wiphy.extended_capabilities_len,
1644 rdev->wiphy.extended_capabilities_mask)))
1645 goto nla_put_failure;
1646
1647 if (rdev->wiphy.vht_capa_mod_mask &&
1648 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1649 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1650 rdev->wiphy.vht_capa_mod_mask))
1651 goto nla_put_failure;
1652
1653 state->split_start++;
1654 break;
1655 case 10:
1656 if (nl80211_send_coalesce(msg, rdev))
1657 goto nla_put_failure;
1658
1659 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1660 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1661 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1662 goto nla_put_failure;
1663
1664 if (rdev->wiphy.max_ap_assoc_sta &&
1665 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1666 rdev->wiphy.max_ap_assoc_sta))
1667 goto nla_put_failure;
1668
1669 state->split_start++;
1670 break;
1671 case 11:
1672 if (rdev->wiphy.n_vendor_commands) {
1673 const struct nl80211_vendor_cmd_info *info;
1674 struct nlattr *nested;
1675
1676 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1677 if (!nested)
1678 goto nla_put_failure;
1679
1680 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1681 info = &rdev->wiphy.vendor_commands[i].info;
1682 if (nla_put(msg, i + 1, sizeof(*info), info))
1683 goto nla_put_failure;
1684 }
1685 nla_nest_end(msg, nested);
1686 }
1687
1688 if (rdev->wiphy.n_vendor_events) {
1689 const struct nl80211_vendor_cmd_info *info;
1690 struct nlattr *nested;
1691
1692 nested = nla_nest_start(msg,
1693 NL80211_ATTR_VENDOR_EVENTS);
1694 if (!nested)
1695 goto nla_put_failure;
1696
1697 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1698 info = &rdev->wiphy.vendor_events[i];
1699 if (nla_put(msg, i + 1, sizeof(*info), info))
1700 goto nla_put_failure;
1701 }
1702 nla_nest_end(msg, nested);
1703 }
1704 state->split_start++;
1705 break;
1706 case 12:
1707 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1708 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1709 rdev->wiphy.max_num_csa_counters))
1710 goto nla_put_failure;
1711
1712 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1713 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1714 goto nla_put_failure;
1715
1716 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1717 sizeof(rdev->wiphy.ext_features),
1718 rdev->wiphy.ext_features))
1719 goto nla_put_failure;
1720
1721 /* done */
1722 state->split_start = 0;
1723 break;
1724 }
1725 finish:
1726 genlmsg_end(msg, hdr);
1727 return 0;
1728
1729 nla_put_failure:
1730 genlmsg_cancel(msg, hdr);
1731 return -EMSGSIZE;
1732}
1733
1734static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1735 struct netlink_callback *cb,
1736 struct nl80211_dump_wiphy_state *state)
1737{
1738 struct nlattr **tb = nl80211_fam.attrbuf;
1739 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1740 tb, nl80211_fam.maxattr, nl80211_policy);
1741 /* ignore parse errors for backward compatibility */
1742 if (ret)
1743 return 0;
1744
1745 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1746 if (tb[NL80211_ATTR_WIPHY])
1747 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1748 if (tb[NL80211_ATTR_WDEV])
1749 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1750 if (tb[NL80211_ATTR_IFINDEX]) {
1751 struct net_device *netdev;
1752 struct cfg80211_registered_device *rdev;
1753 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1754
1755 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1756 if (!netdev)
1757 return -ENODEV;
1758 if (netdev->ieee80211_ptr) {
1759 rdev = wiphy_to_rdev(
1760 netdev->ieee80211_ptr->wiphy);
1761 state->filter_wiphy = rdev->wiphy_idx;
1762 }
1763 }
1764
1765 return 0;
1766}
1767
1768static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1769{
1770 int idx = 0, ret;
1771 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1772 struct cfg80211_registered_device *rdev;
1773
1774 rtnl_lock();
1775 if (!state) {
1776 state = kzalloc(sizeof(*state), GFP_KERNEL);
1777 if (!state) {
1778 rtnl_unlock();
1779 return -ENOMEM;
1780 }
1781 state->filter_wiphy = -1;
1782 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1783 if (ret) {
1784 kfree(state);
1785 rtnl_unlock();
1786 return ret;
1787 }
1788 cb->args[0] = (long)state;
1789 }
1790
1791 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1792 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1793 continue;
1794 if (++idx <= state->start)
1795 continue;
1796 if (state->filter_wiphy != -1 &&
1797 state->filter_wiphy != rdev->wiphy_idx)
1798 continue;
1799 /* attempt to fit multiple wiphy data chunks into the skb */
1800 do {
1801 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1802 skb,
1803 NETLINK_CB(cb->skb).portid,
1804 cb->nlh->nlmsg_seq,
1805 NLM_F_MULTI, state);
1806 if (ret < 0) {
1807 /*
1808 * If sending the wiphy data didn't fit (ENOBUFS
1809 * or EMSGSIZE returned), this SKB is still
1810 * empty (so it's not too big because another
1811 * wiphy dataset is already in the skb) and
1812 * we've not tried to adjust the dump allocation
1813 * yet ... then adjust the alloc size to be
1814 * bigger, and return 1 but with the empty skb.
1815 * This results in an empty message being RX'ed
1816 * in userspace, but that is ignored.
1817 *
1818 * We can then retry with the larger buffer.
1819 */
1820 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1821 !skb->len && !state->split &&
1822 cb->min_dump_alloc < 4096) {
1823 cb->min_dump_alloc = 4096;
1824 state->split_start = 0;
1825 rtnl_unlock();
1826 return 1;
1827 }
1828 idx--;
1829 break;
1830 }
1831 } while (state->split_start > 0);
1832 break;
1833 }
1834 rtnl_unlock();
1835
1836 state->start = idx;
1837
1838 return skb->len;
1839}
1840
1841static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1842{
1843 kfree((void *)cb->args[0]);
1844 return 0;
1845}
1846
1847static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1848{
1849 struct sk_buff *msg;
1850 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1851 struct nl80211_dump_wiphy_state state = {};
1852
1853 msg = nlmsg_new(4096, GFP_KERNEL);
1854 if (!msg)
1855 return -ENOMEM;
1856
1857 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1858 info->snd_portid, info->snd_seq, 0,
1859 &state) < 0) {
1860 nlmsg_free(msg);
1861 return -ENOBUFS;
1862 }
1863
1864 return genlmsg_reply(msg, info);
1865}
1866
1867static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1868 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1869 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1870 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1871 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1872 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1873};
1874
1875static int parse_txq_params(struct nlattr *tb[],
1876 struct ieee80211_txq_params *txq_params)
1877{
1878 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1879 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1880 !tb[NL80211_TXQ_ATTR_AIFS])
1881 return -EINVAL;
1882
1883 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1884 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1885 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1886 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1887 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1888
1889 if (txq_params->ac >= NL80211_NUM_ACS)
1890 return -EINVAL;
1891
1892 return 0;
1893}
1894
1895static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1896{
1897 /*
1898 * You can only set the channel explicitly for WDS interfaces,
1899 * all others have their channel managed via their respective
1900 * "establish a connection" command (connect, join, ...)
1901 *
1902 * For AP/GO and mesh mode, the channel can be set with the
1903 * channel userspace API, but is only stored and passed to the
1904 * low-level driver when the AP starts or the mesh is joined.
1905 * This is for backward compatibility, userspace can also give
1906 * the channel in the start-ap or join-mesh commands instead.
1907 *
1908 * Monitors are special as they are normally slaved to
1909 * whatever else is going on, so they have their own special
1910 * operation to set the monitor channel if possible.
1911 */
1912 return !wdev ||
1913 wdev->iftype == NL80211_IFTYPE_AP ||
1914 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1915 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1916 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1917}
1918
1919static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1920 struct genl_info *info,
1921 struct cfg80211_chan_def *chandef)
1922{
1923 u32 control_freq;
1924
1925 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1926 return -EINVAL;
1927
1928 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1929
1930 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1931 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1932 chandef->center_freq1 = control_freq;
1933 chandef->center_freq2 = 0;
1934
1935 /* Primary channel not allowed */
1936 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1937 return -EINVAL;
1938
1939 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1940 enum nl80211_channel_type chantype;
1941
1942 chantype = nla_get_u32(
1943 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1944
1945 switch (chantype) {
1946 case NL80211_CHAN_NO_HT:
1947 case NL80211_CHAN_HT20:
1948 case NL80211_CHAN_HT40PLUS:
1949 case NL80211_CHAN_HT40MINUS:
1950 cfg80211_chandef_create(chandef, chandef->chan,
1951 chantype);
1952 break;
1953 default:
1954 return -EINVAL;
1955 }
1956 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1957 chandef->width =
1958 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1959 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1960 chandef->center_freq1 =
1961 nla_get_u32(
1962 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1963 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1964 chandef->center_freq2 =
1965 nla_get_u32(
1966 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1967 }
1968
1969 if (!cfg80211_chandef_valid(chandef))
1970 return -EINVAL;
1971
1972 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1973 IEEE80211_CHAN_DISABLED))
1974 return -EINVAL;
1975
1976 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1977 chandef->width == NL80211_CHAN_WIDTH_10) &&
1978 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1979 return -EINVAL;
1980
1981 return 0;
1982}
1983
1984static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1985 struct net_device *dev,
1986 struct genl_info *info)
1987{
1988 struct cfg80211_chan_def chandef;
1989 int result;
1990 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1991 struct wireless_dev *wdev = NULL;
1992
1993 if (dev)
1994 wdev = dev->ieee80211_ptr;
1995 if (!nl80211_can_set_dev_channel(wdev))
1996 return -EOPNOTSUPP;
1997 if (wdev)
1998 iftype = wdev->iftype;
1999
2000 result = nl80211_parse_chandef(rdev, info, &chandef);
2001 if (result)
2002 return result;
2003
2004 switch (iftype) {
2005 case NL80211_IFTYPE_AP:
2006 case NL80211_IFTYPE_P2P_GO:
2007 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2008 result = -EINVAL;
2009 break;
2010 }
2011 if (wdev->beacon_interval) {
2012 if (!dev || !rdev->ops->set_ap_chanwidth ||
2013 !(rdev->wiphy.features &
2014 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2015 result = -EBUSY;
2016 break;
2017 }
2018
2019 /* Only allow dynamic channel width changes */
2020 if (chandef.chan != wdev->preset_chandef.chan) {
2021 result = -EBUSY;
2022 break;
2023 }
2024 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2025 if (result)
2026 break;
2027 }
2028 wdev->preset_chandef = chandef;
2029 result = 0;
2030 break;
2031 case NL80211_IFTYPE_MESH_POINT:
2032 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2033 break;
2034 case NL80211_IFTYPE_MONITOR:
2035 result = cfg80211_set_monitor_channel(rdev, &chandef);
2036 break;
2037 default:
2038 result = -EINVAL;
2039 }
2040
2041 return result;
2042}
2043
2044static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2045{
2046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047 struct net_device *netdev = info->user_ptr[1];
2048
2049 return __nl80211_set_channel(rdev, netdev, info);
2050}
2051
2052static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2053{
2054 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2055 struct net_device *dev = info->user_ptr[1];
2056 struct wireless_dev *wdev = dev->ieee80211_ptr;
2057 const u8 *bssid;
2058
2059 if (!info->attrs[NL80211_ATTR_MAC])
2060 return -EINVAL;
2061
2062 if (netif_running(dev))
2063 return -EBUSY;
2064
2065 if (!rdev->ops->set_wds_peer)
2066 return -EOPNOTSUPP;
2067
2068 if (wdev->iftype != NL80211_IFTYPE_WDS)
2069 return -EOPNOTSUPP;
2070
2071 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2072 return rdev_set_wds_peer(rdev, dev, bssid);
2073}
2074
2075
2076static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2077{
2078 struct cfg80211_registered_device *rdev;
2079 struct net_device *netdev = NULL;
2080 struct wireless_dev *wdev;
2081 int result = 0, rem_txq_params = 0;
2082 struct nlattr *nl_txq_params;
2083 u32 changed;
2084 u8 retry_short = 0, retry_long = 0;
2085 u32 frag_threshold = 0, rts_threshold = 0;
2086 u8 coverage_class = 0;
2087
2088 ASSERT_RTNL();
2089
2090 /*
2091 * Try to find the wiphy and netdev. Normally this
2092 * function shouldn't need the netdev, but this is
2093 * done for backward compatibility -- previously
2094 * setting the channel was done per wiphy, but now
2095 * it is per netdev. Previous userland like hostapd
2096 * also passed a netdev to set_wiphy, so that it is
2097 * possible to let that go to the right netdev!
2098 */
2099
2100 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2101 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2102
2103 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2104 if (netdev && netdev->ieee80211_ptr)
2105 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2106 else
2107 netdev = NULL;
2108 }
2109
2110 if (!netdev) {
2111 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2112 info->attrs);
2113 if (IS_ERR(rdev))
2114 return PTR_ERR(rdev);
2115 wdev = NULL;
2116 netdev = NULL;
2117 result = 0;
2118 } else
2119 wdev = netdev->ieee80211_ptr;
2120
2121 /*
2122 * end workaround code, by now the rdev is available
2123 * and locked, and wdev may or may not be NULL.
2124 */
2125
2126 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2127 result = cfg80211_dev_rename(
2128 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2129
2130 if (result)
2131 return result;
2132
2133 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2134 struct ieee80211_txq_params txq_params;
2135 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2136
2137 if (!rdev->ops->set_txq_params)
2138 return -EOPNOTSUPP;
2139
2140 if (!netdev)
2141 return -EINVAL;
2142
2143 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2144 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2145 return -EINVAL;
2146
2147 if (!netif_running(netdev))
2148 return -ENETDOWN;
2149
2150 nla_for_each_nested(nl_txq_params,
2151 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2152 rem_txq_params) {
2153 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2154 nla_data(nl_txq_params),
2155 nla_len(nl_txq_params),
2156 txq_params_policy);
2157 if (result)
2158 return result;
2159 result = parse_txq_params(tb, &txq_params);
2160 if (result)
2161 return result;
2162
2163 result = rdev_set_txq_params(rdev, netdev,
2164 &txq_params);
2165 if (result)
2166 return result;
2167 }
2168 }
2169
2170 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2171 result = __nl80211_set_channel(
2172 rdev,
2173 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2174 info);
2175 if (result)
2176 return result;
2177 }
2178
2179 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2180 struct wireless_dev *txp_wdev = wdev;
2181 enum nl80211_tx_power_setting type;
2182 int idx, mbm = 0;
2183
2184 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2185 txp_wdev = NULL;
2186
2187 if (!rdev->ops->set_tx_power)
2188 return -EOPNOTSUPP;
2189
2190 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2191 type = nla_get_u32(info->attrs[idx]);
2192
2193 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2194 (type != NL80211_TX_POWER_AUTOMATIC))
2195 return -EINVAL;
2196
2197 if (type != NL80211_TX_POWER_AUTOMATIC) {
2198 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2199 mbm = nla_get_u32(info->attrs[idx]);
2200 }
2201
2202 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2203 if (result)
2204 return result;
2205 }
2206
2207 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2208 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2209 u32 tx_ant, rx_ant;
2210 if ((!rdev->wiphy.available_antennas_tx &&
2211 !rdev->wiphy.available_antennas_rx) ||
2212 !rdev->ops->set_antenna)
2213 return -EOPNOTSUPP;
2214
2215 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2216 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2217
2218 /* reject antenna configurations which don't match the
2219 * available antenna masks, except for the "all" mask */
2220 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2221 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2222 return -EINVAL;
2223
2224 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2225 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2226
2227 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2228 if (result)
2229 return result;
2230 }
2231
2232 changed = 0;
2233
2234 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2235 retry_short = nla_get_u8(
2236 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2237 if (retry_short == 0)
2238 return -EINVAL;
2239
2240 changed |= WIPHY_PARAM_RETRY_SHORT;
2241 }
2242
2243 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2244 retry_long = nla_get_u8(
2245 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2246 if (retry_long == 0)
2247 return -EINVAL;
2248
2249 changed |= WIPHY_PARAM_RETRY_LONG;
2250 }
2251
2252 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2253 frag_threshold = nla_get_u32(
2254 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2255 if (frag_threshold < 256)
2256 return -EINVAL;
2257
2258 if (frag_threshold != (u32) -1) {
2259 /*
2260 * Fragments (apart from the last one) are required to
2261 * have even length. Make the fragmentation code
2262 * simpler by stripping LSB should someone try to use
2263 * odd threshold value.
2264 */
2265 frag_threshold &= ~0x1;
2266 }
2267 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2268 }
2269
2270 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2271 rts_threshold = nla_get_u32(
2272 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2273 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2274 }
2275
2276 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2277 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2278 return -EINVAL;
2279
2280 coverage_class = nla_get_u8(
2281 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2282 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2283 }
2284
2285 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2286 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2287 return -EOPNOTSUPP;
2288
2289 changed |= WIPHY_PARAM_DYN_ACK;
2290 }
2291
2292 if (changed) {
2293 u8 old_retry_short, old_retry_long;
2294 u32 old_frag_threshold, old_rts_threshold;
2295 u8 old_coverage_class;
2296
2297 if (!rdev->ops->set_wiphy_params)
2298 return -EOPNOTSUPP;
2299
2300 old_retry_short = rdev->wiphy.retry_short;
2301 old_retry_long = rdev->wiphy.retry_long;
2302 old_frag_threshold = rdev->wiphy.frag_threshold;
2303 old_rts_threshold = rdev->wiphy.rts_threshold;
2304 old_coverage_class = rdev->wiphy.coverage_class;
2305
2306 if (changed & WIPHY_PARAM_RETRY_SHORT)
2307 rdev->wiphy.retry_short = retry_short;
2308 if (changed & WIPHY_PARAM_RETRY_LONG)
2309 rdev->wiphy.retry_long = retry_long;
2310 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2311 rdev->wiphy.frag_threshold = frag_threshold;
2312 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2313 rdev->wiphy.rts_threshold = rts_threshold;
2314 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2315 rdev->wiphy.coverage_class = coverage_class;
2316
2317 result = rdev_set_wiphy_params(rdev, changed);
2318 if (result) {
2319 rdev->wiphy.retry_short = old_retry_short;
2320 rdev->wiphy.retry_long = old_retry_long;
2321 rdev->wiphy.frag_threshold = old_frag_threshold;
2322 rdev->wiphy.rts_threshold = old_rts_threshold;
2323 rdev->wiphy.coverage_class = old_coverage_class;
2324 }
2325 }
2326 return 0;
2327}
2328
2329static inline u64 wdev_id(struct wireless_dev *wdev)
2330{
2331 return (u64)wdev->identifier |
2332 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2333}
2334
2335static int nl80211_send_chandef(struct sk_buff *msg,
2336 const struct cfg80211_chan_def *chandef)
2337{
2338 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2339 return -EINVAL;
2340
2341 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2342 chandef->chan->center_freq))
2343 return -ENOBUFS;
2344 switch (chandef->width) {
2345 case NL80211_CHAN_WIDTH_20_NOHT:
2346 case NL80211_CHAN_WIDTH_20:
2347 case NL80211_CHAN_WIDTH_40:
2348 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2349 cfg80211_get_chandef_type(chandef)))
2350 return -ENOBUFS;
2351 break;
2352 default:
2353 break;
2354 }
2355 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2356 return -ENOBUFS;
2357 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2358 return -ENOBUFS;
2359 if (chandef->center_freq2 &&
2360 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2361 return -ENOBUFS;
2362 return 0;
2363}
2364
2365static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2366 struct cfg80211_registered_device *rdev,
2367 struct wireless_dev *wdev, bool removal)
2368{
2369 struct net_device *dev = wdev->netdev;
2370 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2371 void *hdr;
2372
2373 if (removal)
2374 cmd = NL80211_CMD_DEL_INTERFACE;
2375
2376 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2377 if (!hdr)
2378 return -1;
2379
2380 if (dev &&
2381 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2382 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2383 goto nla_put_failure;
2384
2385 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2386 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2387 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2388 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2389 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2390 rdev->devlist_generation ^
2391 (cfg80211_rdev_list_generation << 2)))
2392 goto nla_put_failure;
2393
2394 if (rdev->ops->get_channel) {
2395 int ret;
2396 struct cfg80211_chan_def chandef;
2397
2398 ret = rdev_get_channel(rdev, wdev, &chandef);
2399 if (ret == 0) {
2400 if (nl80211_send_chandef(msg, &chandef))
2401 goto nla_put_failure;
2402 }
2403 }
2404
2405 if (wdev->ssid_len) {
2406 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2407 goto nla_put_failure;
2408 }
2409
2410 genlmsg_end(msg, hdr);
2411 return 0;
2412
2413 nla_put_failure:
2414 genlmsg_cancel(msg, hdr);
2415 return -EMSGSIZE;
2416}
2417
2418static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2419{
2420 int wp_idx = 0;
2421 int if_idx = 0;
2422 int wp_start = cb->args[0];
2423 int if_start = cb->args[1];
2424 struct cfg80211_registered_device *rdev;
2425 struct wireless_dev *wdev;
2426
2427 rtnl_lock();
2428 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2429 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2430 continue;
2431 if (wp_idx < wp_start) {
2432 wp_idx++;
2433 continue;
2434 }
2435 if_idx = 0;
2436
2437 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2438 if (if_idx < if_start) {
2439 if_idx++;
2440 continue;
2441 }
2442 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2443 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2444 rdev, wdev, false) < 0) {
2445 goto out;
2446 }
2447 if_idx++;
2448 }
2449
2450 wp_idx++;
2451 }
2452 out:
2453 rtnl_unlock();
2454
2455 cb->args[0] = wp_idx;
2456 cb->args[1] = if_idx;
2457
2458 return skb->len;
2459}
2460
2461static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2462{
2463 struct sk_buff *msg;
2464 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2465 struct wireless_dev *wdev = info->user_ptr[1];
2466
2467 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2468 if (!msg)
2469 return -ENOMEM;
2470
2471 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2472 rdev, wdev, false) < 0) {
2473 nlmsg_free(msg);
2474 return -ENOBUFS;
2475 }
2476
2477 return genlmsg_reply(msg, info);
2478}
2479
2480static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2481 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2482 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2483 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2484 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2485 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2486 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2487};
2488
2489static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2490{
2491 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2492 int flag;
2493
2494 *mntrflags = 0;
2495
2496 if (!nla)
2497 return -EINVAL;
2498
2499 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2500 nla, mntr_flags_policy))
2501 return -EINVAL;
2502
2503 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2504 if (flags[flag])
2505 *mntrflags |= (1<<flag);
2506
2507 return 0;
2508}
2509
2510static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2511 struct net_device *netdev, u8 use_4addr,
2512 enum nl80211_iftype iftype)
2513{
2514 if (!use_4addr) {
2515 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2516 return -EBUSY;
2517 return 0;
2518 }
2519
2520 switch (iftype) {
2521 case NL80211_IFTYPE_AP_VLAN:
2522 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2523 return 0;
2524 break;
2525 case NL80211_IFTYPE_STATION:
2526 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2527 return 0;
2528 break;
2529 default:
2530 break;
2531 }
2532
2533 return -EOPNOTSUPP;
2534}
2535
2536static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2537{
2538 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2539 struct vif_params params;
2540 int err;
2541 enum nl80211_iftype otype, ntype;
2542 struct net_device *dev = info->user_ptr[1];
2543 u32 _flags, *flags = NULL;
2544 bool change = false;
2545
2546 memset(&params, 0, sizeof(params));
2547
2548 otype = ntype = dev->ieee80211_ptr->iftype;
2549
2550 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2551 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2552 if (otype != ntype)
2553 change = true;
2554 if (ntype > NL80211_IFTYPE_MAX)
2555 return -EINVAL;
2556 }
2557
2558 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2559 struct wireless_dev *wdev = dev->ieee80211_ptr;
2560
2561 if (ntype != NL80211_IFTYPE_MESH_POINT)
2562 return -EINVAL;
2563 if (netif_running(dev))
2564 return -EBUSY;
2565
2566 wdev_lock(wdev);
2567 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2568 IEEE80211_MAX_MESH_ID_LEN);
2569 wdev->mesh_id_up_len =
2570 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2571 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2572 wdev->mesh_id_up_len);
2573 wdev_unlock(wdev);
2574 }
2575
2576 if (info->attrs[NL80211_ATTR_4ADDR]) {
2577 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2578 change = true;
2579 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2580 if (err)
2581 return err;
2582 } else {
2583 params.use_4addr = -1;
2584 }
2585
2586 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2587 if (ntype != NL80211_IFTYPE_MONITOR)
2588 return -EINVAL;
2589 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2590 &_flags);
2591 if (err)
2592 return err;
2593
2594 flags = &_flags;
2595 change = true;
2596 }
2597
2598 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2599 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2600 return -EOPNOTSUPP;
2601
2602 if (change)
2603 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2604 else
2605 err = 0;
2606
2607 if (!err && params.use_4addr != -1)
2608 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2609
2610 return err;
2611}
2612
2613static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2614{
2615 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2616 struct vif_params params;
2617 struct wireless_dev *wdev;
2618 struct sk_buff *msg, *event;
2619 int err;
2620 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2621 u32 flags;
2622
2623 /* to avoid failing a new interface creation due to pending removal */
2624 cfg80211_destroy_ifaces(rdev);
2625
2626 memset(&params, 0, sizeof(params));
2627
2628 if (!info->attrs[NL80211_ATTR_IFNAME])
2629 return -EINVAL;
2630
2631 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2632 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2633 if (type > NL80211_IFTYPE_MAX)
2634 return -EINVAL;
2635 }
2636
2637 if (!rdev->ops->add_virtual_intf ||
2638 !(rdev->wiphy.interface_modes & (1 << type)))
2639 return -EOPNOTSUPP;
2640
2641 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2642 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2643 info->attrs[NL80211_ATTR_MAC]) {
2644 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2645 ETH_ALEN);
2646 if (!is_valid_ether_addr(params.macaddr))
2647 return -EADDRNOTAVAIL;
2648 }
2649
2650 if (info->attrs[NL80211_ATTR_4ADDR]) {
2651 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2652 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2653 if (err)
2654 return err;
2655 }
2656
2657 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2658 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2659 &flags);
2660
2661 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2662 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2663 return -EOPNOTSUPP;
2664
2665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2666 if (!msg)
2667 return -ENOMEM;
2668
2669 wdev = rdev_add_virtual_intf(rdev,
2670 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2671 type, err ? NULL : &flags, &params);
2672 if (WARN_ON(!wdev)) {
2673 nlmsg_free(msg);
2674 return -EPROTO;
2675 } else if (IS_ERR(wdev)) {
2676 nlmsg_free(msg);
2677 return PTR_ERR(wdev);
2678 }
2679
2680 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2681 wdev->owner_nlportid = info->snd_portid;
2682
2683 switch (type) {
2684 case NL80211_IFTYPE_MESH_POINT:
2685 if (!info->attrs[NL80211_ATTR_MESH_ID])
2686 break;
2687 wdev_lock(wdev);
2688 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2689 IEEE80211_MAX_MESH_ID_LEN);
2690 wdev->mesh_id_up_len =
2691 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2692 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2693 wdev->mesh_id_up_len);
2694 wdev_unlock(wdev);
2695 break;
2696 case NL80211_IFTYPE_P2P_DEVICE:
2697 /*
2698 * P2P Device doesn't have a netdev, so doesn't go
2699 * through the netdev notifier and must be added here
2700 */
2701 mutex_init(&wdev->mtx);
2702 INIT_LIST_HEAD(&wdev->event_list);
2703 spin_lock_init(&wdev->event_lock);
2704 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2705 spin_lock_init(&wdev->mgmt_registrations_lock);
2706
2707 wdev->identifier = ++rdev->wdev_id;
2708 list_add_rcu(&wdev->list, &rdev->wdev_list);
2709 rdev->devlist_generation++;
2710 break;
2711 default:
2712 break;
2713 }
2714
2715 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2716 rdev, wdev, false) < 0) {
2717 nlmsg_free(msg);
2718 return -ENOBUFS;
2719 }
2720
2721 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2722 if (event) {
2723 if (nl80211_send_iface(event, 0, 0, 0,
2724 rdev, wdev, false) < 0) {
2725 nlmsg_free(event);
2726 goto out;
2727 }
2728
2729 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2730 event, 0, NL80211_MCGRP_CONFIG,
2731 GFP_KERNEL);
2732 }
2733
2734out:
2735 return genlmsg_reply(msg, info);
2736}
2737
2738static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2739{
2740 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2741 struct wireless_dev *wdev = info->user_ptr[1];
2742 struct sk_buff *msg;
2743 int status;
2744
2745 if (!rdev->ops->del_virtual_intf)
2746 return -EOPNOTSUPP;
2747
2748 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2749 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2750 nlmsg_free(msg);
2751 msg = NULL;
2752 }
2753
2754 /*
2755 * If we remove a wireless device without a netdev then clear
2756 * user_ptr[1] so that nl80211_post_doit won't dereference it
2757 * to check if it needs to do dev_put(). Otherwise it crashes
2758 * since the wdev has been freed, unlike with a netdev where
2759 * we need the dev_put() for the netdev to really be freed.
2760 */
2761 if (!wdev->netdev)
2762 info->user_ptr[1] = NULL;
2763
2764 status = rdev_del_virtual_intf(rdev, wdev);
2765 if (status >= 0 && msg)
2766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2767 msg, 0, NL80211_MCGRP_CONFIG,
2768 GFP_KERNEL);
2769 else
2770 nlmsg_free(msg);
2771
2772 return status;
2773}
2774
2775static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2776{
2777 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2778 struct net_device *dev = info->user_ptr[1];
2779 u16 noack_map;
2780
2781 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2782 return -EINVAL;
2783
2784 if (!rdev->ops->set_noack_map)
2785 return -EOPNOTSUPP;
2786
2787 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2788
2789 return rdev_set_noack_map(rdev, dev, noack_map);
2790}
2791
2792struct get_key_cookie {
2793 struct sk_buff *msg;
2794 int error;
2795 int idx;
2796};
2797
2798static void get_key_callback(void *c, struct key_params *params)
2799{
2800 struct nlattr *key;
2801 struct get_key_cookie *cookie = c;
2802
2803 if ((params->key &&
2804 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2805 params->key_len, params->key)) ||
2806 (params->seq &&
2807 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2808 params->seq_len, params->seq)) ||
2809 (params->cipher &&
2810 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2811 params->cipher)))
2812 goto nla_put_failure;
2813
2814 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2815 if (!key)
2816 goto nla_put_failure;
2817
2818 if ((params->key &&
2819 nla_put(cookie->msg, NL80211_KEY_DATA,
2820 params->key_len, params->key)) ||
2821 (params->seq &&
2822 nla_put(cookie->msg, NL80211_KEY_SEQ,
2823 params->seq_len, params->seq)) ||
2824 (params->cipher &&
2825 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2826 params->cipher)))
2827 goto nla_put_failure;
2828
2829 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2830 goto nla_put_failure;
2831
2832 nla_nest_end(cookie->msg, key);
2833
2834 return;
2835 nla_put_failure:
2836 cookie->error = 1;
2837}
2838
2839static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2840{
2841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2842 int err;
2843 struct net_device *dev = info->user_ptr[1];
2844 u8 key_idx = 0;
2845 const u8 *mac_addr = NULL;
2846 bool pairwise;
2847 struct get_key_cookie cookie = {
2848 .error = 0,
2849 };
2850 void *hdr;
2851 struct sk_buff *msg;
2852
2853 if (info->attrs[NL80211_ATTR_KEY_IDX])
2854 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2855
2856 if (key_idx > 5)
2857 return -EINVAL;
2858
2859 if (info->attrs[NL80211_ATTR_MAC])
2860 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2861
2862 pairwise = !!mac_addr;
2863 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2864 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2865 if (kt >= NUM_NL80211_KEYTYPES)
2866 return -EINVAL;
2867 if (kt != NL80211_KEYTYPE_GROUP &&
2868 kt != NL80211_KEYTYPE_PAIRWISE)
2869 return -EINVAL;
2870 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2871 }
2872
2873 if (!rdev->ops->get_key)
2874 return -EOPNOTSUPP;
2875
2876 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2877 return -ENOENT;
2878
2879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2880 if (!msg)
2881 return -ENOMEM;
2882
2883 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2884 NL80211_CMD_NEW_KEY);
2885 if (!hdr)
2886 goto nla_put_failure;
2887
2888 cookie.msg = msg;
2889 cookie.idx = key_idx;
2890
2891 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2892 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2893 goto nla_put_failure;
2894 if (mac_addr &&
2895 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2896 goto nla_put_failure;
2897
2898 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2899 get_key_callback);
2900
2901 if (err)
2902 goto free_msg;
2903
2904 if (cookie.error)
2905 goto nla_put_failure;
2906
2907 genlmsg_end(msg, hdr);
2908 return genlmsg_reply(msg, info);
2909
2910 nla_put_failure:
2911 err = -ENOBUFS;
2912 free_msg:
2913 nlmsg_free(msg);
2914 return err;
2915}
2916
2917static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2918{
2919 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2920 struct key_parse key;
2921 int err;
2922 struct net_device *dev = info->user_ptr[1];
2923
2924 err = nl80211_parse_key(info, &key);
2925 if (err)
2926 return err;
2927
2928 if (key.idx < 0)
2929 return -EINVAL;
2930
2931 /* only support setting default key */
2932 if (!key.def && !key.defmgmt)
2933 return -EINVAL;
2934
2935 wdev_lock(dev->ieee80211_ptr);
2936
2937 if (key.def) {
2938 if (!rdev->ops->set_default_key) {
2939 err = -EOPNOTSUPP;
2940 goto out;
2941 }
2942
2943 err = nl80211_key_allowed(dev->ieee80211_ptr);
2944 if (err)
2945 goto out;
2946
2947 err = rdev_set_default_key(rdev, dev, key.idx,
2948 key.def_uni, key.def_multi);
2949
2950 if (err)
2951 goto out;
2952
2953#ifdef CONFIG_CFG80211_WEXT
2954 dev->ieee80211_ptr->wext.default_key = key.idx;
2955#endif
2956 } else {
2957 if (key.def_uni || !key.def_multi) {
2958 err = -EINVAL;
2959 goto out;
2960 }
2961
2962 if (!rdev->ops->set_default_mgmt_key) {
2963 err = -EOPNOTSUPP;
2964 goto out;
2965 }
2966
2967 err = nl80211_key_allowed(dev->ieee80211_ptr);
2968 if (err)
2969 goto out;
2970
2971 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2972 if (err)
2973 goto out;
2974
2975#ifdef CONFIG_CFG80211_WEXT
2976 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2977#endif
2978 }
2979
2980 out:
2981 wdev_unlock(dev->ieee80211_ptr);
2982
2983 return err;
2984}
2985
2986static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2987{
2988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2989 int err;
2990 struct net_device *dev = info->user_ptr[1];
2991 struct key_parse key;
2992 const u8 *mac_addr = NULL;
2993
2994 err = nl80211_parse_key(info, &key);
2995 if (err)
2996 return err;
2997
2998 if (!key.p.key)
2999 return -EINVAL;
3000
3001 if (info->attrs[NL80211_ATTR_MAC])
3002 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3003
3004 if (key.type == -1) {
3005 if (mac_addr)
3006 key.type = NL80211_KEYTYPE_PAIRWISE;
3007 else
3008 key.type = NL80211_KEYTYPE_GROUP;
3009 }
3010
3011 /* for now */
3012 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3013 key.type != NL80211_KEYTYPE_GROUP)
3014 return -EINVAL;
3015
3016 if (!rdev->ops->add_key)
3017 return -EOPNOTSUPP;
3018
3019 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3020 key.type == NL80211_KEYTYPE_PAIRWISE,
3021 mac_addr))
3022 return -EINVAL;
3023
3024 wdev_lock(dev->ieee80211_ptr);
3025 err = nl80211_key_allowed(dev->ieee80211_ptr);
3026 if (!err)
3027 err = rdev_add_key(rdev, dev, key.idx,
3028 key.type == NL80211_KEYTYPE_PAIRWISE,
3029 mac_addr, &key.p);
3030 wdev_unlock(dev->ieee80211_ptr);
3031
3032 return err;
3033}
3034
3035static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3036{
3037 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3038 int err;
3039 struct net_device *dev = info->user_ptr[1];
3040 u8 *mac_addr = NULL;
3041 struct key_parse key;
3042
3043 err = nl80211_parse_key(info, &key);
3044 if (err)
3045 return err;
3046
3047 if (info->attrs[NL80211_ATTR_MAC])
3048 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3049
3050 if (key.type == -1) {
3051 if (mac_addr)
3052 key.type = NL80211_KEYTYPE_PAIRWISE;
3053 else
3054 key.type = NL80211_KEYTYPE_GROUP;
3055 }
3056
3057 /* for now */
3058 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3059 key.type != NL80211_KEYTYPE_GROUP)
3060 return -EINVAL;
3061
3062 if (!rdev->ops->del_key)
3063 return -EOPNOTSUPP;
3064
3065 wdev_lock(dev->ieee80211_ptr);
3066 err = nl80211_key_allowed(dev->ieee80211_ptr);
3067
3068 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3069 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3070 err = -ENOENT;
3071
3072 if (!err)
3073 err = rdev_del_key(rdev, dev, key.idx,
3074 key.type == NL80211_KEYTYPE_PAIRWISE,
3075 mac_addr);
3076
3077#ifdef CONFIG_CFG80211_WEXT
3078 if (!err) {
3079 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3080 dev->ieee80211_ptr->wext.default_key = -1;
3081 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3082 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3083 }
3084#endif
3085 wdev_unlock(dev->ieee80211_ptr);
3086
3087 return err;
3088}
3089
3090/* This function returns an error or the number of nested attributes */
3091static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3092{
3093 struct nlattr *attr;
3094 int n_entries = 0, tmp;
3095
3096 nla_for_each_nested(attr, nl_attr, tmp) {
3097 if (nla_len(attr) != ETH_ALEN)
3098 return -EINVAL;
3099
3100 n_entries++;
3101 }
3102
3103 return n_entries;
3104}
3105
3106/*
3107 * This function parses ACL information and allocates memory for ACL data.
3108 * On successful return, the calling function is responsible to free the
3109 * ACL buffer returned by this function.
3110 */
3111static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3112 struct genl_info *info)
3113{
3114 enum nl80211_acl_policy acl_policy;
3115 struct nlattr *attr;
3116 struct cfg80211_acl_data *acl;
3117 int i = 0, n_entries, tmp;
3118
3119 if (!wiphy->max_acl_mac_addrs)
3120 return ERR_PTR(-EOPNOTSUPP);
3121
3122 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3123 return ERR_PTR(-EINVAL);
3124
3125 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3126 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3127 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3128 return ERR_PTR(-EINVAL);
3129
3130 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3131 return ERR_PTR(-EINVAL);
3132
3133 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3134 if (n_entries < 0)
3135 return ERR_PTR(n_entries);
3136
3137 if (n_entries > wiphy->max_acl_mac_addrs)
3138 return ERR_PTR(-ENOTSUPP);
3139
3140 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3141 GFP_KERNEL);
3142 if (!acl)
3143 return ERR_PTR(-ENOMEM);
3144
3145 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3146 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3147 i++;
3148 }
3149
3150 acl->n_acl_entries = n_entries;
3151 acl->acl_policy = acl_policy;
3152
3153 return acl;
3154}
3155
3156static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3157{
3158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3159 struct net_device *dev = info->user_ptr[1];
3160 struct cfg80211_acl_data *acl;
3161 int err;
3162
3163 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3164 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3165 return -EOPNOTSUPP;
3166
3167 if (!dev->ieee80211_ptr->beacon_interval)
3168 return -EINVAL;
3169
3170 acl = parse_acl_data(&rdev->wiphy, info);
3171 if (IS_ERR(acl))
3172 return PTR_ERR(acl);
3173
3174 err = rdev_set_mac_acl(rdev, dev, acl);
3175
3176 kfree(acl);
3177
3178 return err;
3179}
3180
3181static int nl80211_parse_beacon(struct nlattr *attrs[],
3182 struct cfg80211_beacon_data *bcn)
3183{
3184 bool haveinfo = false;
3185
3186 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3187 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3188 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3189 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3190 return -EINVAL;
3191
3192 memset(bcn, 0, sizeof(*bcn));
3193
3194 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3195 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3196 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3197 if (!bcn->head_len)
3198 return -EINVAL;
3199 haveinfo = true;
3200 }
3201
3202 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3203 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3204 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3205 haveinfo = true;
3206 }
3207
3208 if (!haveinfo)
3209 return -EINVAL;
3210
3211 if (attrs[NL80211_ATTR_IE]) {
3212 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3213 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3214 }
3215
3216 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3217 bcn->proberesp_ies =
3218 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3219 bcn->proberesp_ies_len =
3220 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3221 }
3222
3223 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3224 bcn->assocresp_ies =
3225 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3226 bcn->assocresp_ies_len =
3227 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3228 }
3229
3230 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3231 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3232 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3233 }
3234
3235 return 0;
3236}
3237
3238static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3239 struct cfg80211_ap_settings *params)
3240{
3241 struct wireless_dev *wdev;
3242 bool ret = false;
3243
3244 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3245 if (wdev->iftype != NL80211_IFTYPE_AP &&
3246 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3247 continue;
3248
3249 if (!wdev->preset_chandef.chan)
3250 continue;
3251
3252 params->chandef = wdev->preset_chandef;
3253 ret = true;
3254 break;
3255 }
3256
3257 return ret;
3258}
3259
3260static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3261 enum nl80211_auth_type auth_type,
3262 enum nl80211_commands cmd)
3263{
3264 if (auth_type > NL80211_AUTHTYPE_MAX)
3265 return false;
3266
3267 switch (cmd) {
3268 case NL80211_CMD_AUTHENTICATE:
3269 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3270 auth_type == NL80211_AUTHTYPE_SAE)
3271 return false;
3272 return true;
3273 case NL80211_CMD_CONNECT:
3274 case NL80211_CMD_START_AP:
3275 /* SAE not supported yet */
3276 if (auth_type == NL80211_AUTHTYPE_SAE)
3277 return false;
3278 return true;
3279 default:
3280 return false;
3281 }
3282}
3283
3284static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3285{
3286 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3287 struct net_device *dev = info->user_ptr[1];
3288 struct wireless_dev *wdev = dev->ieee80211_ptr;
3289 struct cfg80211_ap_settings params;
3290 int err;
3291
3292 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3293 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3294 return -EOPNOTSUPP;
3295
3296 if (!rdev->ops->start_ap)
3297 return -EOPNOTSUPP;
3298
3299 if (wdev->beacon_interval)
3300 return -EALREADY;
3301
3302 memset(&params, 0, sizeof(params));
3303
3304 /* these are required for START_AP */
3305 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3306 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3307 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3308 return -EINVAL;
3309
3310 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3311 if (err)
3312 return err;
3313
3314 params.beacon_interval =
3315 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3316 params.dtim_period =
3317 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3318
3319 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3320 if (err)
3321 return err;
3322
3323 /*
3324 * In theory, some of these attributes should be required here
3325 * but since they were not used when the command was originally
3326 * added, keep them optional for old user space programs to let
3327 * them continue to work with drivers that do not need the
3328 * additional information -- drivers must check!
3329 */
3330 if (info->attrs[NL80211_ATTR_SSID]) {
3331 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3332 params.ssid_len =
3333 nla_len(info->attrs[NL80211_ATTR_SSID]);
3334 if (params.ssid_len == 0 ||
3335 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3336 return -EINVAL;
3337 }
3338
3339 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3340 params.hidden_ssid = nla_get_u32(
3341 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3342 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3343 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3344 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3345 return -EINVAL;
3346 }
3347
3348 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3349
3350 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3351 params.auth_type = nla_get_u32(
3352 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3353 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3354 NL80211_CMD_START_AP))
3355 return -EINVAL;
3356 } else
3357 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3358
3359 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3360 NL80211_MAX_NR_CIPHER_SUITES);
3361 if (err)
3362 return err;
3363
3364 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3365 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3366 return -EOPNOTSUPP;
3367 params.inactivity_timeout = nla_get_u16(
3368 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3369 }
3370
3371 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3372 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3373 return -EINVAL;
3374 params.p2p_ctwindow =
3375 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3376 if (params.p2p_ctwindow > 127)
3377 return -EINVAL;
3378 if (params.p2p_ctwindow != 0 &&
3379 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3380 return -EINVAL;
3381 }
3382
3383 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3384 u8 tmp;
3385
3386 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3387 return -EINVAL;
3388 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3389 if (tmp > 1)
3390 return -EINVAL;
3391 params.p2p_opp_ps = tmp;
3392 if (params.p2p_opp_ps != 0 &&
3393 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3394 return -EINVAL;
3395 }
3396
3397 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3398 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3399 if (err)
3400 return err;
3401 } else if (wdev->preset_chandef.chan) {
3402 params.chandef = wdev->preset_chandef;
3403 } else if (!nl80211_get_ap_channel(rdev, &params))
3404 return -EINVAL;
3405
3406 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3407 wdev->iftype))
3408 return -EINVAL;
3409
3410 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3411 params.acl = parse_acl_data(&rdev->wiphy, info);
3412 if (IS_ERR(params.acl))
3413 return PTR_ERR(params.acl);
3414 }
3415
3416 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3417 params.smps_mode =
3418 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3419 switch (params.smps_mode) {
3420 case NL80211_SMPS_OFF:
3421 break;
3422 case NL80211_SMPS_STATIC:
3423 if (!(rdev->wiphy.features &
3424 NL80211_FEATURE_STATIC_SMPS))
3425 return -EINVAL;
3426 break;
3427 case NL80211_SMPS_DYNAMIC:
3428 if (!(rdev->wiphy.features &
3429 NL80211_FEATURE_DYNAMIC_SMPS))
3430 return -EINVAL;
3431 break;
3432 default:
3433 return -EINVAL;
3434 }
3435 } else {
3436 params.smps_mode = NL80211_SMPS_OFF;
3437 }
3438
3439 wdev_lock(wdev);
3440 err = rdev_start_ap(rdev, dev, &params);
3441 if (!err) {
3442 wdev->preset_chandef = params.chandef;
3443 wdev->beacon_interval = params.beacon_interval;
3444 wdev->chandef = params.chandef;
3445 wdev->ssid_len = params.ssid_len;
3446 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3447 }
3448 wdev_unlock(wdev);
3449
3450 kfree(params.acl);
3451
3452 return err;
3453}
3454
3455static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3456{
3457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3458 struct net_device *dev = info->user_ptr[1];
3459 struct wireless_dev *wdev = dev->ieee80211_ptr;
3460 struct cfg80211_beacon_data params;
3461 int err;
3462
3463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3465 return -EOPNOTSUPP;
3466
3467 if (!rdev->ops->change_beacon)
3468 return -EOPNOTSUPP;
3469
3470 if (!wdev->beacon_interval)
3471 return -EINVAL;
3472
3473 err = nl80211_parse_beacon(info->attrs, &params);
3474 if (err)
3475 return err;
3476
3477 wdev_lock(wdev);
3478 err = rdev_change_beacon(rdev, dev, &params);
3479 wdev_unlock(wdev);
3480
3481 return err;
3482}
3483
3484static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3485{
3486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3487 struct net_device *dev = info->user_ptr[1];
3488
3489 return cfg80211_stop_ap(rdev, dev, false);
3490}
3491
3492static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3493 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3494 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3495 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3496 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3497 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3498 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3499};
3500
3501static int parse_station_flags(struct genl_info *info,
3502 enum nl80211_iftype iftype,
3503 struct station_parameters *params)
3504{
3505 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3506 struct nlattr *nla;
3507 int flag;
3508
3509 /*
3510 * Try parsing the new attribute first so userspace
3511 * can specify both for older kernels.
3512 */
3513 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3514 if (nla) {
3515 struct nl80211_sta_flag_update *sta_flags;
3516
3517 sta_flags = nla_data(nla);
3518 params->sta_flags_mask = sta_flags->mask;
3519 params->sta_flags_set = sta_flags->set;
3520 params->sta_flags_set &= params->sta_flags_mask;
3521 if ((params->sta_flags_mask |
3522 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3523 return -EINVAL;
3524 return 0;
3525 }
3526
3527 /* if present, parse the old attribute */
3528
3529 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3530 if (!nla)
3531 return 0;
3532
3533 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3534 nla, sta_flags_policy))
3535 return -EINVAL;
3536
3537 /*
3538 * Only allow certain flags for interface types so that
3539 * other attributes are silently ignored. Remember that
3540 * this is backward compatibility code with old userspace
3541 * and shouldn't be hit in other cases anyway.
3542 */
3543 switch (iftype) {
3544 case NL80211_IFTYPE_AP:
3545 case NL80211_IFTYPE_AP_VLAN:
3546 case NL80211_IFTYPE_P2P_GO:
3547 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3548 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3549 BIT(NL80211_STA_FLAG_WME) |
3550 BIT(NL80211_STA_FLAG_MFP);
3551 break;
3552 case NL80211_IFTYPE_P2P_CLIENT:
3553 case NL80211_IFTYPE_STATION:
3554 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3555 BIT(NL80211_STA_FLAG_TDLS_PEER);
3556 break;
3557 case NL80211_IFTYPE_MESH_POINT:
3558 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3559 BIT(NL80211_STA_FLAG_MFP) |
3560 BIT(NL80211_STA_FLAG_AUTHORIZED);
3561 default:
3562 return -EINVAL;
3563 }
3564
3565 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3566 if (flags[flag]) {
3567 params->sta_flags_set |= (1<<flag);
3568
3569 /* no longer support new API additions in old API */
3570 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3571 return -EINVAL;
3572 }
3573 }
3574
3575 return 0;
3576}
3577
3578static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3579 int attr)
3580{
3581 struct nlattr *rate;
3582 u32 bitrate;
3583 u16 bitrate_compat;
3584 enum nl80211_attrs rate_flg;
3585
3586 rate = nla_nest_start(msg, attr);
3587 if (!rate)
3588 return false;
3589
3590 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3591 bitrate = cfg80211_calculate_bitrate(info);
3592 /* report 16-bit bitrate only if we can */
3593 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3594 if (bitrate > 0 &&
3595 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3596 return false;
3597 if (bitrate_compat > 0 &&
3598 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3599 return false;
3600
3601 switch (info->bw) {
3602 case RATE_INFO_BW_5:
3603 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3604 break;
3605 case RATE_INFO_BW_10:
3606 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3607 break;
3608 default:
3609 WARN_ON(1);
3610 /* fall through */
3611 case RATE_INFO_BW_20:
3612 rate_flg = 0;
3613 break;
3614 case RATE_INFO_BW_40:
3615 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3616 break;
3617 case RATE_INFO_BW_80:
3618 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3619 break;
3620 case RATE_INFO_BW_160:
3621 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3622 break;
3623 }
3624
3625 if (rate_flg && nla_put_flag(msg, rate_flg))
3626 return false;
3627
3628 if (info->flags & RATE_INFO_FLAGS_MCS) {
3629 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3630 return false;
3631 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3632 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3633 return false;
3634 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3635 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3636 return false;
3637 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3638 return false;
3639 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3640 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3641 return false;
3642 }
3643
3644 nla_nest_end(msg, rate);
3645 return true;
3646}
3647
3648static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3649 int id)
3650{
3651 void *attr;
3652 int i = 0;
3653
3654 if (!mask)
3655 return true;
3656
3657 attr = nla_nest_start(msg, id);
3658 if (!attr)
3659 return false;
3660
3661 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3662 if (!(mask & BIT(i)))
3663 continue;
3664
3665 if (nla_put_u8(msg, i, signal[i]))
3666 return false;
3667 }
3668
3669 nla_nest_end(msg, attr);
3670
3671 return true;
3672}
3673
3674static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3675 u32 seq, int flags,
3676 struct cfg80211_registered_device *rdev,
3677 struct net_device *dev,
3678 const u8 *mac_addr, struct station_info *sinfo)
3679{
3680 void *hdr;
3681 struct nlattr *sinfoattr, *bss_param;
3682
3683 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3684 if (!hdr)
3685 return -1;
3686
3687 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3688 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3689 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3690 goto nla_put_failure;
3691
3692 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3693 if (!sinfoattr)
3694 goto nla_put_failure;
3695
3696#define PUT_SINFO(attr, memb, type) do { \
3697 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3698 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3699 sinfo->memb)) \
3700 goto nla_put_failure; \
3701 } while (0)
3702
3703 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3704 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3705
3706 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3707 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3708 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3709 (u32)sinfo->rx_bytes))
3710 goto nla_put_failure;
3711
3712 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3713 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3714 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3715 (u32)sinfo->tx_bytes))
3716 goto nla_put_failure;
3717
3718 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3719 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3720 PUT_SINFO(LLID, llid, u16);
3721 PUT_SINFO(PLID, plid, u16);
3722 PUT_SINFO(PLINK_STATE, plink_state, u8);
3723
3724 switch (rdev->wiphy.signal_type) {
3725 case CFG80211_SIGNAL_TYPE_MBM:
3726 PUT_SINFO(SIGNAL, signal, u8);
3727 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3728 break;
3729 default:
3730 break;
3731 }
3732 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3733 if (!nl80211_put_signal(msg, sinfo->chains,
3734 sinfo->chain_signal,
3735 NL80211_STA_INFO_CHAIN_SIGNAL))
3736 goto nla_put_failure;
3737 }
3738 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3739 if (!nl80211_put_signal(msg, sinfo->chains,
3740 sinfo->chain_signal_avg,
3741 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3742 goto nla_put_failure;
3743 }
3744 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3745 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3746 NL80211_STA_INFO_TX_BITRATE))
3747 goto nla_put_failure;
3748 }
3749 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3750 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3751 NL80211_STA_INFO_RX_BITRATE))
3752 goto nla_put_failure;
3753 }
3754
3755 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3756 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3757 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3758 PUT_SINFO(TX_FAILED, tx_failed, u32);
3759 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3760 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3761 PUT_SINFO(LOCAL_PM, local_pm, u32);
3762 PUT_SINFO(PEER_PM, peer_pm, u32);
3763 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3764
3765 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3766 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3767 if (!bss_param)
3768 goto nla_put_failure;
3769
3770 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3771 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3772 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3773 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3774 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3775 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3776 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3777 sinfo->bss_param.dtim_period) ||
3778 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3779 sinfo->bss_param.beacon_interval))
3780 goto nla_put_failure;
3781
3782 nla_nest_end(msg, bss_param);
3783 }
3784 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3785 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3786 sizeof(struct nl80211_sta_flag_update),
3787 &sinfo->sta_flags))
3788 goto nla_put_failure;
3789
3790 PUT_SINFO(T_OFFSET, t_offset, u64);
3791 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3792 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3793 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3794
3795#undef PUT_SINFO
3796
3797 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3798 struct nlattr *tidsattr;
3799 int tid;
3800
3801 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3802 if (!tidsattr)
3803 goto nla_put_failure;
3804
3805 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3806 struct cfg80211_tid_stats *tidstats;
3807 struct nlattr *tidattr;
3808
3809 tidstats = &sinfo->pertid[tid];
3810
3811 if (!tidstats->filled)
3812 continue;
3813
3814 tidattr = nla_nest_start(msg, tid + 1);
3815 if (!tidattr)
3816 goto nla_put_failure;
3817
3818#define PUT_TIDVAL(attr, memb, type) do { \
3819 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3820 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3821 tidstats->memb)) \
3822 goto nla_put_failure; \
3823 } while (0)
3824
3825 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3826 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3827 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3828 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3829
3830#undef PUT_TIDVAL
3831 nla_nest_end(msg, tidattr);
3832 }
3833
3834 nla_nest_end(msg, tidsattr);
3835 }
3836
3837 nla_nest_end(msg, sinfoattr);
3838
3839 if (sinfo->assoc_req_ies_len &&
3840 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3841 sinfo->assoc_req_ies))
3842 goto nla_put_failure;
3843
3844 genlmsg_end(msg, hdr);
3845 return 0;
3846
3847 nla_put_failure:
3848 genlmsg_cancel(msg, hdr);
3849 return -EMSGSIZE;
3850}
3851
3852static int nl80211_dump_station(struct sk_buff *skb,
3853 struct netlink_callback *cb)
3854{
3855 struct station_info sinfo;
3856 struct cfg80211_registered_device *rdev;
3857 struct wireless_dev *wdev;
3858 u8 mac_addr[ETH_ALEN];
3859 int sta_idx = cb->args[2];
3860 int err;
3861
3862 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3863 if (err)
3864 return err;
3865
3866 if (!wdev->netdev) {
3867 err = -EINVAL;
3868 goto out_err;
3869 }
3870
3871 if (!rdev->ops->dump_station) {
3872 err = -EOPNOTSUPP;
3873 goto out_err;
3874 }
3875
3876 while (1) {
3877 memset(&sinfo, 0, sizeof(sinfo));
3878 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3879 mac_addr, &sinfo);
3880 if (err == -ENOENT)
3881 break;
3882 if (err)
3883 goto out_err;
3884
3885 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3886 NETLINK_CB(cb->skb).portid,
3887 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3888 rdev, wdev->netdev, mac_addr,
3889 &sinfo) < 0)
3890 goto out;
3891
3892 sta_idx++;
3893 }
3894
3895
3896 out:
3897 cb->args[2] = sta_idx;
3898 err = skb->len;
3899 out_err:
3900 nl80211_finish_wdev_dump(rdev);
3901
3902 return err;
3903}
3904
3905static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3906{
3907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3908 struct net_device *dev = info->user_ptr[1];
3909 struct station_info sinfo;
3910 struct sk_buff *msg;
3911 u8 *mac_addr = NULL;
3912 int err;
3913
3914 memset(&sinfo, 0, sizeof(sinfo));
3915
3916 if (!info->attrs[NL80211_ATTR_MAC])
3917 return -EINVAL;
3918
3919 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3920
3921 if (!rdev->ops->get_station)
3922 return -EOPNOTSUPP;
3923
3924 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3925 if (err)
3926 return err;
3927
3928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3929 if (!msg)
3930 return -ENOMEM;
3931
3932 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3933 info->snd_portid, info->snd_seq, 0,
3934 rdev, dev, mac_addr, &sinfo) < 0) {
3935 nlmsg_free(msg);
3936 return -ENOBUFS;
3937 }
3938
3939 return genlmsg_reply(msg, info);
3940}
3941
3942int cfg80211_check_station_change(struct wiphy *wiphy,
3943 struct station_parameters *params,
3944 enum cfg80211_station_type statype)
3945{
3946 if (params->listen_interval != -1)
3947 return -EINVAL;
3948 if (params->aid &&
3949 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3950 return -EINVAL;
3951
3952 /* When you run into this, adjust the code below for the new flag */
3953 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3954
3955 switch (statype) {
3956 case CFG80211_STA_MESH_PEER_KERNEL:
3957 case CFG80211_STA_MESH_PEER_USER:
3958 /*
3959 * No ignoring the TDLS flag here -- the userspace mesh
3960 * code doesn't have the bug of including TDLS in the
3961 * mask everywhere.
3962 */
3963 if (params->sta_flags_mask &
3964 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3965 BIT(NL80211_STA_FLAG_MFP) |
3966 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3967 return -EINVAL;
3968 break;
3969 case CFG80211_STA_TDLS_PEER_SETUP:
3970 case CFG80211_STA_TDLS_PEER_ACTIVE:
3971 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3972 return -EINVAL;
3973 /* ignore since it can't change */
3974 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3975 break;
3976 default:
3977 /* disallow mesh-specific things */
3978 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3979 return -EINVAL;
3980 if (params->local_pm)
3981 return -EINVAL;
3982 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3983 return -EINVAL;
3984 }
3985
3986 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3987 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3988 /* TDLS can't be set, ... */
3989 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3990 return -EINVAL;
3991 /*
3992 * ... but don't bother the driver with it. This works around
3993 * a hostapd/wpa_supplicant issue -- it always includes the
3994 * TLDS_PEER flag in the mask even for AP mode.
3995 */
3996 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3997 }
3998
3999 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
4000 /* reject other things that can't change */
4001 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4002 return -EINVAL;
4003 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4004 return -EINVAL;
4005 if (params->supported_rates)
4006 return -EINVAL;
4007 if (params->ext_capab || params->ht_capa || params->vht_capa)
4008 return -EINVAL;
4009 }
4010
4011 if (statype != CFG80211_STA_AP_CLIENT) {
4012 if (params->vlan)
4013 return -EINVAL;
4014 }
4015
4016 switch (statype) {
4017 case CFG80211_STA_AP_MLME_CLIENT:
4018 /* Use this only for authorizing/unauthorizing a station */
4019 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4020 return -EOPNOTSUPP;
4021 break;
4022 case CFG80211_STA_AP_CLIENT:
4023 /* accept only the listed bits */
4024 if (params->sta_flags_mask &
4025 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4026 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4027 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4028 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4029 BIT(NL80211_STA_FLAG_WME) |
4030 BIT(NL80211_STA_FLAG_MFP)))
4031 return -EINVAL;
4032
4033 /* but authenticated/associated only if driver handles it */
4034 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4035 params->sta_flags_mask &
4036 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4037 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4038 return -EINVAL;
4039 break;
4040 case CFG80211_STA_IBSS:
4041 case CFG80211_STA_AP_STA:
4042 /* reject any changes other than AUTHORIZED */
4043 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4044 return -EINVAL;
4045 break;
4046 case CFG80211_STA_TDLS_PEER_SETUP:
4047 /* reject any changes other than AUTHORIZED or WME */
4048 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4049 BIT(NL80211_STA_FLAG_WME)))
4050 return -EINVAL;
4051 /* force (at least) rates when authorizing */
4052 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4053 !params->supported_rates)
4054 return -EINVAL;
4055 break;
4056 case CFG80211_STA_TDLS_PEER_ACTIVE:
4057 /* reject any changes */
4058 return -EINVAL;
4059 case CFG80211_STA_MESH_PEER_KERNEL:
4060 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4061 return -EINVAL;
4062 break;
4063 case CFG80211_STA_MESH_PEER_USER:
4064 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4065 return -EINVAL;
4066 break;
4067 }
4068
4069 return 0;
4070}
4071EXPORT_SYMBOL(cfg80211_check_station_change);
4072
4073/*
4074 * Get vlan interface making sure it is running and on the right wiphy.
4075 */
4076static struct net_device *get_vlan(struct genl_info *info,
4077 struct cfg80211_registered_device *rdev)
4078{
4079 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4080 struct net_device *v;
4081 int ret;
4082
4083 if (!vlanattr)
4084 return NULL;
4085
4086 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4087 if (!v)
4088 return ERR_PTR(-ENODEV);
4089
4090 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4091 ret = -EINVAL;
4092 goto error;
4093 }
4094
4095 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4096 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4097 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4098 ret = -EINVAL;
4099 goto error;
4100 }
4101
4102 if (!netif_running(v)) {
4103 ret = -ENETDOWN;
4104 goto error;
4105 }
4106
4107 return v;
4108 error:
4109 dev_put(v);
4110 return ERR_PTR(ret);
4111}
4112
4113static const struct nla_policy
4114nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4115 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4116 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4117};
4118
4119static int nl80211_parse_sta_wme(struct genl_info *info,
4120 struct station_parameters *params)
4121{
4122 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4123 struct nlattr *nla;
4124 int err;
4125
4126 /* parse WME attributes if present */
4127 if (!info->attrs[NL80211_ATTR_STA_WME])
4128 return 0;
4129
4130 nla = info->attrs[NL80211_ATTR_STA_WME];
4131 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4132 nl80211_sta_wme_policy);
4133 if (err)
4134 return err;
4135
4136 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4137 params->uapsd_queues = nla_get_u8(
4138 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4139 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4140 return -EINVAL;
4141
4142 if (tb[NL80211_STA_WME_MAX_SP])
4143 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4144
4145 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4146 return -EINVAL;
4147
4148 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4149
4150 return 0;
4151}
4152
4153static int nl80211_parse_sta_channel_info(struct genl_info *info,
4154 struct station_parameters *params)
4155{
4156 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4157 params->supported_channels =
4158 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4159 params->supported_channels_len =
4160 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4161 /*
4162 * Need to include at least one (first channel, number of
4163 * channels) tuple for each subband, and must have proper
4164 * tuples for the rest of the data as well.
4165 */
4166 if (params->supported_channels_len < 2)
4167 return -EINVAL;
4168 if (params->supported_channels_len % 2)
4169 return -EINVAL;
4170 }
4171
4172 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4173 params->supported_oper_classes =
4174 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4175 params->supported_oper_classes_len =
4176 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4177 /*
4178 * The value of the Length field of the Supported Operating
4179 * Classes element is between 2 and 253.
4180 */
4181 if (params->supported_oper_classes_len < 2 ||
4182 params->supported_oper_classes_len > 253)
4183 return -EINVAL;
4184 }
4185 return 0;
4186}
4187
4188static int nl80211_set_station_tdls(struct genl_info *info,
4189 struct station_parameters *params)
4190{
4191 int err;
4192 /* Dummy STA entry gets updated once the peer capabilities are known */
4193 if (info->attrs[NL80211_ATTR_PEER_AID])
4194 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4195 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4196 params->ht_capa =
4197 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4198 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4199 params->vht_capa =
4200 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4201
4202 err = nl80211_parse_sta_channel_info(info, params);
4203 if (err)
4204 return err;
4205
4206 return nl80211_parse_sta_wme(info, params);
4207}
4208
4209static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4210{
4211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4212 struct net_device *dev = info->user_ptr[1];
4213 struct station_parameters params;
4214 u8 *mac_addr;
4215 int err;
4216
4217 memset(&params, 0, sizeof(params));
4218
4219 params.listen_interval = -1;
4220
4221 if (!rdev->ops->change_station)
4222 return -EOPNOTSUPP;
4223
4224 if (info->attrs[NL80211_ATTR_STA_AID])
4225 return -EINVAL;
4226
4227 if (!info->attrs[NL80211_ATTR_MAC])
4228 return -EINVAL;
4229
4230 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4231
4232 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4233 params.supported_rates =
4234 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4235 params.supported_rates_len =
4236 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4237 }
4238
4239 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4240 params.capability =
4241 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4242 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4243 }
4244
4245 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4246 params.ext_capab =
4247 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4248 params.ext_capab_len =
4249 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4250 }
4251
4252 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4253 return -EINVAL;
4254
4255 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4256 return -EINVAL;
4257
4258 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4259 params.plink_action =
4260 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4261 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4262 return -EINVAL;
4263 }
4264
4265 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4266 params.plink_state =
4267 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4268 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4269 return -EINVAL;
4270 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4271 }
4272
4273 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4274 enum nl80211_mesh_power_mode pm = nla_get_u32(
4275 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4276
4277 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4278 pm > NL80211_MESH_POWER_MAX)
4279 return -EINVAL;
4280
4281 params.local_pm = pm;
4282 }
4283
4284 /* Include parameters for TDLS peer (will check later) */
4285 err = nl80211_set_station_tdls(info, &params);
4286 if (err)
4287 return err;
4288
4289 params.vlan = get_vlan(info, rdev);
4290 if (IS_ERR(params.vlan))
4291 return PTR_ERR(params.vlan);
4292
4293 switch (dev->ieee80211_ptr->iftype) {
4294 case NL80211_IFTYPE_AP:
4295 case NL80211_IFTYPE_AP_VLAN:
4296 case NL80211_IFTYPE_P2P_GO:
4297 case NL80211_IFTYPE_P2P_CLIENT:
4298 case NL80211_IFTYPE_STATION:
4299 case NL80211_IFTYPE_ADHOC:
4300 case NL80211_IFTYPE_MESH_POINT:
4301 break;
4302 default:
4303 err = -EOPNOTSUPP;
4304 goto out_put_vlan;
4305 }
4306
4307 /* driver will call cfg80211_check_station_change() */
4308 err = rdev_change_station(rdev, dev, mac_addr, &params);
4309
4310 out_put_vlan:
4311 if (params.vlan)
4312 dev_put(params.vlan);
4313
4314 return err;
4315}
4316
4317static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4318{
4319 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4320 int err;
4321 struct net_device *dev = info->user_ptr[1];
4322 struct station_parameters params;
4323 u8 *mac_addr = NULL;
4324
4325 memset(&params, 0, sizeof(params));
4326
4327 if (!rdev->ops->add_station)
4328 return -EOPNOTSUPP;
4329
4330 if (!info->attrs[NL80211_ATTR_MAC])
4331 return -EINVAL;
4332
4333 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4334 return -EINVAL;
4335
4336 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4337 return -EINVAL;
4338
4339 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4340 !info->attrs[NL80211_ATTR_PEER_AID])
4341 return -EINVAL;
4342
4343 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4344 params.supported_rates =
4345 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4346 params.supported_rates_len =
4347 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4348 params.listen_interval =
4349 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4350
4351 if (info->attrs[NL80211_ATTR_PEER_AID])
4352 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4353 else
4354 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4355 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4356 return -EINVAL;
4357
4358 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4359 params.capability =
4360 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4361 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4362 }
4363
4364 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4365 params.ext_capab =
4366 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4367 params.ext_capab_len =
4368 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4369 }
4370
4371 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4372 params.ht_capa =
4373 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4374
4375 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4376 params.vht_capa =
4377 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4378
4379 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4380 params.opmode_notif_used = true;
4381 params.opmode_notif =
4382 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4383 }
4384
4385 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4386 params.plink_action =
4387 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4388 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4389 return -EINVAL;
4390 }
4391
4392 err = nl80211_parse_sta_channel_info(info, &params);
4393 if (err)
4394 return err;
4395
4396 err = nl80211_parse_sta_wme(info, &params);
4397 if (err)
4398 return err;
4399
4400 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4401 return -EINVAL;
4402
4403 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4404 * as userspace might just pass through the capabilities from the IEs
4405 * directly, rather than enforcing this restriction and returning an
4406 * error in this case.
4407 */
4408 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4409 params.ht_capa = NULL;
4410 params.vht_capa = NULL;
4411 }
4412
4413 /* When you run into this, adjust the code below for the new flag */
4414 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4415
4416 switch (dev->ieee80211_ptr->iftype) {
4417 case NL80211_IFTYPE_AP:
4418 case NL80211_IFTYPE_AP_VLAN:
4419 case NL80211_IFTYPE_P2P_GO:
4420 /* ignore WME attributes if iface/sta is not capable */
4421 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4422 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4423 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4424
4425 /* TDLS peers cannot be added */
4426 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4427 info->attrs[NL80211_ATTR_PEER_AID])
4428 return -EINVAL;
4429 /* but don't bother the driver with it */
4430 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4431
4432 /* allow authenticated/associated only if driver handles it */
4433 if (!(rdev->wiphy.features &
4434 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4435 params.sta_flags_mask &
4436 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4437 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4438 return -EINVAL;
4439
4440 /* must be last in here for error handling */
4441 params.vlan = get_vlan(info, rdev);
4442 if (IS_ERR(params.vlan))
4443 return PTR_ERR(params.vlan);
4444 break;
4445 case NL80211_IFTYPE_MESH_POINT:
4446 /* ignore uAPSD data */
4447 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4448
4449 /* associated is disallowed */
4450 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4451 return -EINVAL;
4452 /* TDLS peers cannot be added */
4453 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4454 info->attrs[NL80211_ATTR_PEER_AID])
4455 return -EINVAL;
4456 break;
4457 case NL80211_IFTYPE_STATION:
4458 case NL80211_IFTYPE_P2P_CLIENT:
4459 /* ignore uAPSD data */
4460 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4461
4462 /* these are disallowed */
4463 if (params.sta_flags_mask &
4464 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4465 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4466 return -EINVAL;
4467 /* Only TDLS peers can be added */
4468 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4469 return -EINVAL;
4470 /* Can only add if TDLS ... */
4471 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4472 return -EOPNOTSUPP;
4473 /* ... with external setup is supported */
4474 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4475 return -EOPNOTSUPP;
4476 /*
4477 * Older wpa_supplicant versions always mark the TDLS peer
4478 * as authorized, but it shouldn't yet be.
4479 */
4480 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4481 break;
4482 default:
4483 return -EOPNOTSUPP;
4484 }
4485
4486 /* be aware of params.vlan when changing code here */
4487
4488 err = rdev_add_station(rdev, dev, mac_addr, &params);
4489
4490 if (params.vlan)
4491 dev_put(params.vlan);
4492 return err;
4493}
4494
4495static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4496{
4497 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4498 struct net_device *dev = info->user_ptr[1];
4499 struct station_del_parameters params;
4500
4501 memset(&params, 0, sizeof(params));
4502
4503 if (info->attrs[NL80211_ATTR_MAC])
4504 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4505
4506 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4507 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4508 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4509 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4510 return -EINVAL;
4511
4512 if (!rdev->ops->del_station)
4513 return -EOPNOTSUPP;
4514
4515 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4516 params.subtype =
4517 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4518 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4519 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4520 return -EINVAL;
4521 } else {
4522 /* Default to Deauthentication frame */
4523 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4524 }
4525
4526 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4527 params.reason_code =
4528 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4529 if (params.reason_code == 0)
4530 return -EINVAL; /* 0 is reserved */
4531 } else {
4532 /* Default to reason code 2 */
4533 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4534 }
4535
4536 return rdev_del_station(rdev, dev, &params);
4537}
4538
4539static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4540 int flags, struct net_device *dev,
4541 u8 *dst, u8 *next_hop,
4542 struct mpath_info *pinfo)
4543{
4544 void *hdr;
4545 struct nlattr *pinfoattr;
4546
4547 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4548 if (!hdr)
4549 return -1;
4550
4551 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4552 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4553 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4554 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4555 goto nla_put_failure;
4556
4557 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4558 if (!pinfoattr)
4559 goto nla_put_failure;
4560 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4561 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4562 pinfo->frame_qlen))
4563 goto nla_put_failure;
4564 if (((pinfo->filled & MPATH_INFO_SN) &&
4565 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4566 ((pinfo->filled & MPATH_INFO_METRIC) &&
4567 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4568 pinfo->metric)) ||
4569 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4570 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4571 pinfo->exptime)) ||
4572 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4573 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4574 pinfo->flags)) ||
4575 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4576 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4577 pinfo->discovery_timeout)) ||
4578 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4579 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4580 pinfo->discovery_retries)))
4581 goto nla_put_failure;
4582
4583 nla_nest_end(msg, pinfoattr);
4584
4585 genlmsg_end(msg, hdr);
4586 return 0;
4587
4588 nla_put_failure:
4589 genlmsg_cancel(msg, hdr);
4590 return -EMSGSIZE;
4591}
4592
4593static int nl80211_dump_mpath(struct sk_buff *skb,
4594 struct netlink_callback *cb)
4595{
4596 struct mpath_info pinfo;
4597 struct cfg80211_registered_device *rdev;
4598 struct wireless_dev *wdev;
4599 u8 dst[ETH_ALEN];
4600 u8 next_hop[ETH_ALEN];
4601 int path_idx = cb->args[2];
4602 int err;
4603
4604 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4605 if (err)
4606 return err;
4607
4608 if (!rdev->ops->dump_mpath) {
4609 err = -EOPNOTSUPP;
4610 goto out_err;
4611 }
4612
4613 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4614 err = -EOPNOTSUPP;
4615 goto out_err;
4616 }
4617
4618 while (1) {
4619 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4620 next_hop, &pinfo);
4621 if (err == -ENOENT)
4622 break;
4623 if (err)
4624 goto out_err;
4625
4626 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4627 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4628 wdev->netdev, dst, next_hop,
4629 &pinfo) < 0)
4630 goto out;
4631
4632 path_idx++;
4633 }
4634
4635
4636 out:
4637 cb->args[2] = path_idx;
4638 err = skb->len;
4639 out_err:
4640 nl80211_finish_wdev_dump(rdev);
4641 return err;
4642}
4643
4644static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4645{
4646 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4647 int err;
4648 struct net_device *dev = info->user_ptr[1];
4649 struct mpath_info pinfo;
4650 struct sk_buff *msg;
4651 u8 *dst = NULL;
4652 u8 next_hop[ETH_ALEN];
4653
4654 memset(&pinfo, 0, sizeof(pinfo));
4655
4656 if (!info->attrs[NL80211_ATTR_MAC])
4657 return -EINVAL;
4658
4659 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4660
4661 if (!rdev->ops->get_mpath)
4662 return -EOPNOTSUPP;
4663
4664 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4665 return -EOPNOTSUPP;
4666
4667 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4668 if (err)
4669 return err;
4670
4671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4672 if (!msg)
4673 return -ENOMEM;
4674
4675 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4676 dev, dst, next_hop, &pinfo) < 0) {
4677 nlmsg_free(msg);
4678 return -ENOBUFS;
4679 }
4680
4681 return genlmsg_reply(msg, info);
4682}
4683
4684static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4685{
4686 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4687 struct net_device *dev = info->user_ptr[1];
4688 u8 *dst = NULL;
4689 u8 *next_hop = NULL;
4690
4691 if (!info->attrs[NL80211_ATTR_MAC])
4692 return -EINVAL;
4693
4694 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4695 return -EINVAL;
4696
4697 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4698 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4699
4700 if (!rdev->ops->change_mpath)
4701 return -EOPNOTSUPP;
4702
4703 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4704 return -EOPNOTSUPP;
4705
4706 return rdev_change_mpath(rdev, dev, dst, next_hop);
4707}
4708
4709static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4710{
4711 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4712 struct net_device *dev = info->user_ptr[1];
4713 u8 *dst = NULL;
4714 u8 *next_hop = NULL;
4715
4716 if (!info->attrs[NL80211_ATTR_MAC])
4717 return -EINVAL;
4718
4719 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4720 return -EINVAL;
4721
4722 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4723 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4724
4725 if (!rdev->ops->add_mpath)
4726 return -EOPNOTSUPP;
4727
4728 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4729 return -EOPNOTSUPP;
4730
4731 return rdev_add_mpath(rdev, dev, dst, next_hop);
4732}
4733
4734static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4735{
4736 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4737 struct net_device *dev = info->user_ptr[1];
4738 u8 *dst = NULL;
4739
4740 if (info->attrs[NL80211_ATTR_MAC])
4741 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4742
4743 if (!rdev->ops->del_mpath)
4744 return -EOPNOTSUPP;
4745
4746 return rdev_del_mpath(rdev, dev, dst);
4747}
4748
4749static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4750{
4751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4752 int err;
4753 struct net_device *dev = info->user_ptr[1];
4754 struct mpath_info pinfo;
4755 struct sk_buff *msg;
4756 u8 *dst = NULL;
4757 u8 mpp[ETH_ALEN];
4758
4759 memset(&pinfo, 0, sizeof(pinfo));
4760
4761 if (!info->attrs[NL80211_ATTR_MAC])
4762 return -EINVAL;
4763
4764 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4765
4766 if (!rdev->ops->get_mpp)
4767 return -EOPNOTSUPP;
4768
4769 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4770 return -EOPNOTSUPP;
4771
4772 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4773 if (err)
4774 return err;
4775
4776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4777 if (!msg)
4778 return -ENOMEM;
4779
4780 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4781 dev, dst, mpp, &pinfo) < 0) {
4782 nlmsg_free(msg);
4783 return -ENOBUFS;
4784 }
4785
4786 return genlmsg_reply(msg, info);
4787}
4788
4789static int nl80211_dump_mpp(struct sk_buff *skb,
4790 struct netlink_callback *cb)
4791{
4792 struct mpath_info pinfo;
4793 struct cfg80211_registered_device *rdev;
4794 struct wireless_dev *wdev;
4795 u8 dst[ETH_ALEN];
4796 u8 mpp[ETH_ALEN];
4797 int path_idx = cb->args[2];
4798 int err;
4799
4800 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4801 if (err)
4802 return err;
4803
4804 if (!rdev->ops->dump_mpp) {
4805 err = -EOPNOTSUPP;
4806 goto out_err;
4807 }
4808
4809 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4810 err = -EOPNOTSUPP;
4811 goto out_err;
4812 }
4813
4814 while (1) {
4815 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4816 mpp, &pinfo);
4817 if (err == -ENOENT)
4818 break;
4819 if (err)
4820 goto out_err;
4821
4822 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4823 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4824 wdev->netdev, dst, mpp,
4825 &pinfo) < 0)
4826 goto out;
4827
4828 path_idx++;
4829 }
4830
4831 out:
4832 cb->args[2] = path_idx;
4833 err = skb->len;
4834 out_err:
4835 nl80211_finish_wdev_dump(rdev);
4836 return err;
4837}
4838
4839static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4840{
4841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4842 struct net_device *dev = info->user_ptr[1];
4843 struct wireless_dev *wdev = dev->ieee80211_ptr;
4844 struct bss_parameters params;
4845 int err;
4846
4847 memset(&params, 0, sizeof(params));
4848 /* default to not changing parameters */
4849 params.use_cts_prot = -1;
4850 params.use_short_preamble = -1;
4851 params.use_short_slot_time = -1;
4852 params.ap_isolate = -1;
4853 params.ht_opmode = -1;
4854 params.p2p_ctwindow = -1;
4855 params.p2p_opp_ps = -1;
4856
4857 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4858 params.use_cts_prot =
4859 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4860 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4861 params.use_short_preamble =
4862 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4863 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4864 params.use_short_slot_time =
4865 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4866 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4867 params.basic_rates =
4868 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4869 params.basic_rates_len =
4870 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4871 }
4872 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4873 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4874 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4875 params.ht_opmode =
4876 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4877
4878 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4880 return -EINVAL;
4881 params.p2p_ctwindow =
4882 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4883 if (params.p2p_ctwindow < 0)
4884 return -EINVAL;
4885 if (params.p2p_ctwindow != 0 &&
4886 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4887 return -EINVAL;
4888 }
4889
4890 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4891 u8 tmp;
4892
4893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4894 return -EINVAL;
4895 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4896 if (tmp > 1)
4897 return -EINVAL;
4898 params.p2p_opp_ps = tmp;
4899 if (params.p2p_opp_ps &&
4900 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4901 return -EINVAL;
4902 }
4903
4904 if (!rdev->ops->change_bss)
4905 return -EOPNOTSUPP;
4906
4907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4908 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4909 return -EOPNOTSUPP;
4910
4911 wdev_lock(wdev);
4912 err = rdev_change_bss(rdev, dev, &params);
4913 wdev_unlock(wdev);
4914
4915 return err;
4916}
4917
4918static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4919 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4920 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4921 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4922 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4923 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4924 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4925 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4926};
4927
4928static int parse_reg_rule(struct nlattr *tb[],
4929 struct ieee80211_reg_rule *reg_rule)
4930{
4931 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4932 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4933
4934 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4935 return -EINVAL;
4936 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4937 return -EINVAL;
4938 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4939 return -EINVAL;
4940 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4941 return -EINVAL;
4942 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4943 return -EINVAL;
4944
4945 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4946
4947 freq_range->start_freq_khz =
4948 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4949 freq_range->end_freq_khz =
4950 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4951 freq_range->max_bandwidth_khz =
4952 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4953
4954 power_rule->max_eirp =
4955 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4956
4957 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4958 power_rule->max_antenna_gain =
4959 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4960
4961 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4962 reg_rule->dfs_cac_ms =
4963 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4964
4965 return 0;
4966}
4967
4968static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4969{
4970 char *data = NULL;
4971 enum nl80211_user_reg_hint_type user_reg_hint_type;
4972
4973 /*
4974 * You should only get this when cfg80211 hasn't yet initialized
4975 * completely when built-in to the kernel right between the time
4976 * window between nl80211_init() and regulatory_init(), if that is
4977 * even possible.
4978 */
4979 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4980 return -EINPROGRESS;
4981
4982 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4983 user_reg_hint_type =
4984 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4985 else
4986 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4987
4988 switch (user_reg_hint_type) {
4989 case NL80211_USER_REG_HINT_USER:
4990 case NL80211_USER_REG_HINT_CELL_BASE:
4991 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4992 return -EINVAL;
4993
4994 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4995 return regulatory_hint_user(data, user_reg_hint_type);
4996 case NL80211_USER_REG_HINT_INDOOR:
4997 return regulatory_hint_indoor_user();
4998 default:
4999 return -EINVAL;
5000 }
5001}
5002
5003static int nl80211_get_mesh_config(struct sk_buff *skb,
5004 struct genl_info *info)
5005{
5006 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5007 struct net_device *dev = info->user_ptr[1];
5008 struct wireless_dev *wdev = dev->ieee80211_ptr;
5009 struct mesh_config cur_params;
5010 int err = 0;
5011 void *hdr;
5012 struct nlattr *pinfoattr;
5013 struct sk_buff *msg;
5014
5015 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5016 return -EOPNOTSUPP;
5017
5018 if (!rdev->ops->get_mesh_config)
5019 return -EOPNOTSUPP;
5020
5021 wdev_lock(wdev);
5022 /* If not connected, get default parameters */
5023 if (!wdev->mesh_id_len)
5024 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5025 else
5026 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5027 wdev_unlock(wdev);
5028
5029 if (err)
5030 return err;
5031
5032 /* Draw up a netlink message to send back */
5033 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5034 if (!msg)
5035 return -ENOMEM;
5036 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5037 NL80211_CMD_GET_MESH_CONFIG);
5038 if (!hdr)
5039 goto out;
5040 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5041 if (!pinfoattr)
5042 goto nla_put_failure;
5043 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5044 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5045 cur_params.dot11MeshRetryTimeout) ||
5046 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5047 cur_params.dot11MeshConfirmTimeout) ||
5048 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5049 cur_params.dot11MeshHoldingTimeout) ||
5050 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5051 cur_params.dot11MeshMaxPeerLinks) ||
5052 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5053 cur_params.dot11MeshMaxRetries) ||
5054 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5055 cur_params.dot11MeshTTL) ||
5056 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5057 cur_params.element_ttl) ||
5058 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5059 cur_params.auto_open_plinks) ||
5060 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5061 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5062 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5063 cur_params.dot11MeshHWMPmaxPREQretries) ||
5064 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5065 cur_params.path_refresh_time) ||
5066 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5067 cur_params.min_discovery_timeout) ||
5068 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5069 cur_params.dot11MeshHWMPactivePathTimeout) ||
5070 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5071 cur_params.dot11MeshHWMPpreqMinInterval) ||
5072 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5073 cur_params.dot11MeshHWMPperrMinInterval) ||
5074 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5075 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5076 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5077 cur_params.dot11MeshHWMPRootMode) ||
5078 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5079 cur_params.dot11MeshHWMPRannInterval) ||
5080 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5081 cur_params.dot11MeshGateAnnouncementProtocol) ||
5082 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5083 cur_params.dot11MeshForwarding) ||
5084 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5085 cur_params.rssi_threshold) ||
5086 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5087 cur_params.ht_opmode) ||
5088 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5089 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5090 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5091 cur_params.dot11MeshHWMProotInterval) ||
5092 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5093 cur_params.dot11MeshHWMPconfirmationInterval) ||
5094 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5095 cur_params.power_mode) ||
5096 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5097 cur_params.dot11MeshAwakeWindowDuration) ||
5098 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5099 cur_params.plink_timeout))
5100 goto nla_put_failure;
5101 nla_nest_end(msg, pinfoattr);
5102 genlmsg_end(msg, hdr);
5103 return genlmsg_reply(msg, info);
5104
5105 nla_put_failure:
5106 genlmsg_cancel(msg, hdr);
5107 out:
5108 nlmsg_free(msg);
5109 return -ENOBUFS;
5110}
5111
5112static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5113 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5114 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5115 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5116 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5117 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5118 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5119 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5120 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5121 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5122 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5123 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5124 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5125 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5126 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5127 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5128 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5129 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5130 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5131 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5132 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5133 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5134 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5135 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5136 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5137 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5138 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5139 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5140 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5141};
5142
5143static const struct nla_policy
5144 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5145 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5146 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5147 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5148 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5149 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5150 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5151 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5152 .len = IEEE80211_MAX_DATA_LEN },
5153 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5154};
5155
5156static int nl80211_parse_mesh_config(struct genl_info *info,
5157 struct mesh_config *cfg,
5158 u32 *mask_out)
5159{
5160 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5161 u32 mask = 0;
5162
5163#define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5164do { \
5165 if (tb[attr]) { \
5166 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5167 return -EINVAL; \
5168 cfg->param = fn(tb[attr]); \
5169 mask |= (1 << (attr - 1)); \
5170 } \
5171} while (0)
5172
5173
5174 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5175 return -EINVAL;
5176 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5177 info->attrs[NL80211_ATTR_MESH_CONFIG],
5178 nl80211_meshconf_params_policy))
5179 return -EINVAL;
5180
5181 /* This makes sure that there aren't more than 32 mesh config
5182 * parameters (otherwise our bitfield scheme would not work.) */
5183 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5184
5185 /* Fill in the params struct */
5186 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5187 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5188 nla_get_u16);
5189 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5190 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5191 nla_get_u16);
5192 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5193 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5194 nla_get_u16);
5195 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5196 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5197 nla_get_u16);
5198 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5199 mask, NL80211_MESHCONF_MAX_RETRIES,
5200 nla_get_u8);
5201 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5202 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5204 mask, NL80211_MESHCONF_ELEMENT_TTL,
5205 nla_get_u8);
5206 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5207 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5208 nla_get_u8);
5209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5210 1, 255, mask,
5211 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5212 nla_get_u32);
5213 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5214 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5215 nla_get_u8);
5216 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5217 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5218 nla_get_u32);
5219 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5220 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5221 nla_get_u16);
5222 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5223 1, 65535, mask,
5224 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5225 nla_get_u32);
5226 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5227 1, 65535, mask,
5228 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5229 nla_get_u16);
5230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5231 1, 65535, mask,
5232 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5233 nla_get_u16);
5234 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5235 dot11MeshHWMPnetDiameterTraversalTime,
5236 1, 65535, mask,
5237 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5238 nla_get_u16);
5239 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5240 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5241 nla_get_u8);
5242 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5243 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5244 nla_get_u16);
5245 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5246 dot11MeshGateAnnouncementProtocol, 0, 1,
5247 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5248 nla_get_u8);
5249 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5250 mask, NL80211_MESHCONF_FORWARDING,
5251 nla_get_u8);
5252 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5253 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5254 nla_get_s32);
5255 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5256 mask, NL80211_MESHCONF_HT_OPMODE,
5257 nla_get_u16);
5258 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5259 1, 65535, mask,
5260 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5261 nla_get_u32);
5262 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5263 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5264 nla_get_u16);
5265 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5266 dot11MeshHWMPconfirmationInterval,
5267 1, 65535, mask,
5268 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5269 nla_get_u16);
5270 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5271 NL80211_MESH_POWER_ACTIVE,
5272 NL80211_MESH_POWER_MAX,
5273 mask, NL80211_MESHCONF_POWER_MODE,
5274 nla_get_u32);
5275 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5276 0, 65535, mask,
5277 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5278 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5279 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5280 nla_get_u32);
5281 if (mask_out)
5282 *mask_out = mask;
5283
5284 return 0;
5285
5286#undef FILL_IN_MESH_PARAM_IF_SET
5287}
5288
5289static int nl80211_parse_mesh_setup(struct genl_info *info,
5290 struct mesh_setup *setup)
5291{
5292 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5293 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5294
5295 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5296 return -EINVAL;
5297 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5298 info->attrs[NL80211_ATTR_MESH_SETUP],
5299 nl80211_mesh_setup_params_policy))
5300 return -EINVAL;
5301
5302 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5303 setup->sync_method =
5304 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5305 IEEE80211_SYNC_METHOD_VENDOR :
5306 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5307
5308 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5309 setup->path_sel_proto =
5310 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5311 IEEE80211_PATH_PROTOCOL_VENDOR :
5312 IEEE80211_PATH_PROTOCOL_HWMP;
5313
5314 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5315 setup->path_metric =
5316 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5317 IEEE80211_PATH_METRIC_VENDOR :
5318 IEEE80211_PATH_METRIC_AIRTIME;
5319
5320
5321 if (tb[NL80211_MESH_SETUP_IE]) {
5322 struct nlattr *ieattr =
5323 tb[NL80211_MESH_SETUP_IE];
5324 if (!is_valid_ie_attr(ieattr))
5325 return -EINVAL;
5326 setup->ie = nla_data(ieattr);
5327 setup->ie_len = nla_len(ieattr);
5328 }
5329 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5330 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5331 return -EINVAL;
5332 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5333 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5334 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5335 if (setup->is_secure)
5336 setup->user_mpm = true;
5337
5338 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5339 if (!setup->user_mpm)
5340 return -EINVAL;
5341 setup->auth_id =
5342 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5343 }
5344
5345 return 0;
5346}
5347
5348static int nl80211_update_mesh_config(struct sk_buff *skb,
5349 struct genl_info *info)
5350{
5351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5352 struct net_device *dev = info->user_ptr[1];
5353 struct wireless_dev *wdev = dev->ieee80211_ptr;
5354 struct mesh_config cfg;
5355 u32 mask;
5356 int err;
5357
5358 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5359 return -EOPNOTSUPP;
5360
5361 if (!rdev->ops->update_mesh_config)
5362 return -EOPNOTSUPP;
5363
5364 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5365 if (err)
5366 return err;
5367
5368 wdev_lock(wdev);
5369 if (!wdev->mesh_id_len)
5370 err = -ENOLINK;
5371
5372 if (!err)
5373 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5374
5375 wdev_unlock(wdev);
5376
5377 return err;
5378}
5379
5380static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5381 struct sk_buff *msg)
5382{
5383 struct nlattr *nl_reg_rules;
5384 unsigned int i;
5385
5386 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5387 (regdom->dfs_region &&
5388 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5389 goto nla_put_failure;
5390
5391 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5392 if (!nl_reg_rules)
5393 goto nla_put_failure;
5394
5395 for (i = 0; i < regdom->n_reg_rules; i++) {
5396 struct nlattr *nl_reg_rule;
5397 const struct ieee80211_reg_rule *reg_rule;
5398 const struct ieee80211_freq_range *freq_range;
5399 const struct ieee80211_power_rule *power_rule;
5400 unsigned int max_bandwidth_khz;
5401
5402 reg_rule = &regdom->reg_rules[i];
5403 freq_range = &reg_rule->freq_range;
5404 power_rule = &reg_rule->power_rule;
5405
5406 nl_reg_rule = nla_nest_start(msg, i);
5407 if (!nl_reg_rule)
5408 goto nla_put_failure;
5409
5410 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5411 if (!max_bandwidth_khz)
5412 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5413 reg_rule);
5414
5415 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5416 reg_rule->flags) ||
5417 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5418 freq_range->start_freq_khz) ||
5419 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5420 freq_range->end_freq_khz) ||
5421 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5422 max_bandwidth_khz) ||
5423 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5424 power_rule->max_antenna_gain) ||
5425 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5426 power_rule->max_eirp) ||
5427 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5428 reg_rule->dfs_cac_ms))
5429 goto nla_put_failure;
5430
5431 nla_nest_end(msg, nl_reg_rule);
5432 }
5433
5434 nla_nest_end(msg, nl_reg_rules);
5435 return 0;
5436
5437nla_put_failure:
5438 return -EMSGSIZE;
5439}
5440
5441static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5442{
5443 const struct ieee80211_regdomain *regdom = NULL;
5444 struct cfg80211_registered_device *rdev;
5445 struct wiphy *wiphy = NULL;
5446 struct sk_buff *msg;
5447 void *hdr;
5448
5449 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5450 if (!msg)
5451 return -ENOBUFS;
5452
5453 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5454 NL80211_CMD_GET_REG);
5455 if (!hdr)
5456 goto put_failure;
5457
5458 if (info->attrs[NL80211_ATTR_WIPHY]) {
5459 bool self_managed;
5460
5461 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5462 if (IS_ERR(rdev)) {
5463 nlmsg_free(msg);
5464 return PTR_ERR(rdev);
5465 }
5466
5467 wiphy = &rdev->wiphy;
5468 self_managed = wiphy->regulatory_flags &
5469 REGULATORY_WIPHY_SELF_MANAGED;
5470 regdom = get_wiphy_regdom(wiphy);
5471
5472 /* a self-managed-reg device must have a private regdom */
5473 if (WARN_ON(!regdom && self_managed)) {
5474 nlmsg_free(msg);
5475 return -EINVAL;
5476 }
5477
5478 if (regdom &&
5479 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5480 goto nla_put_failure;
5481 }
5482
5483 if (!wiphy && reg_last_request_cell_base() &&
5484 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5485 NL80211_USER_REG_HINT_CELL_BASE))
5486 goto nla_put_failure;
5487
5488 rcu_read_lock();
5489
5490 if (!regdom)
5491 regdom = rcu_dereference(cfg80211_regdomain);
5492
5493 if (nl80211_put_regdom(regdom, msg))
5494 goto nla_put_failure_rcu;
5495
5496 rcu_read_unlock();
5497
5498 genlmsg_end(msg, hdr);
5499 return genlmsg_reply(msg, info);
5500
5501nla_put_failure_rcu:
5502 rcu_read_unlock();
5503nla_put_failure:
5504 genlmsg_cancel(msg, hdr);
5505put_failure:
5506 nlmsg_free(msg);
5507 return -EMSGSIZE;
5508}
5509
5510static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5511 u32 seq, int flags, struct wiphy *wiphy,
5512 const struct ieee80211_regdomain *regdom)
5513{
5514 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5515 NL80211_CMD_GET_REG);
5516
5517 if (!hdr)
5518 return -1;
5519
5520 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5521
5522 if (nl80211_put_regdom(regdom, msg))
5523 goto nla_put_failure;
5524
5525 if (!wiphy && reg_last_request_cell_base() &&
5526 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5527 NL80211_USER_REG_HINT_CELL_BASE))
5528 goto nla_put_failure;
5529
5530 if (wiphy &&
5531 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5532 goto nla_put_failure;
5533
5534 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5535 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5536 goto nla_put_failure;
5537
5538 genlmsg_end(msg, hdr);
5539 return 0;
5540
5541nla_put_failure:
5542 genlmsg_cancel(msg, hdr);
5543 return -EMSGSIZE;
5544}
5545
5546static int nl80211_get_reg_dump(struct sk_buff *skb,
5547 struct netlink_callback *cb)
5548{
5549 const struct ieee80211_regdomain *regdom = NULL;
5550 struct cfg80211_registered_device *rdev;
5551 int err, reg_idx, start = cb->args[2];
5552
5553 rtnl_lock();
5554
5555 if (cfg80211_regdomain && start == 0) {
5556 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5557 NLM_F_MULTI, NULL,
5558 rtnl_dereference(cfg80211_regdomain));
5559 if (err < 0)
5560 goto out_err;
5561 }
5562
5563 /* the global regdom is idx 0 */
5564 reg_idx = 1;
5565 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5566 regdom = get_wiphy_regdom(&rdev->wiphy);
5567 if (!regdom)
5568 continue;
5569
5570 if (++reg_idx <= start)
5571 continue;
5572
5573 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5574 NLM_F_MULTI, &rdev->wiphy, regdom);
5575 if (err < 0) {
5576 reg_idx--;
5577 break;
5578 }
5579 }
5580
5581 cb->args[2] = reg_idx;
5582 err = skb->len;
5583out_err:
5584 rtnl_unlock();
5585 return err;
5586}
5587
5588static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5589{
5590 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5591 struct nlattr *nl_reg_rule;
5592 char *alpha2;
5593 int rem_reg_rules, r;
5594 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5595 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5596 struct ieee80211_regdomain *rd;
5597
5598 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5599 return -EINVAL;
5600
5601 if (!info->attrs[NL80211_ATTR_REG_RULES])
5602 return -EINVAL;
5603
5604 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5605
5606 if (info->attrs[NL80211_ATTR_DFS_REGION])
5607 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5608
5609 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5610 rem_reg_rules) {
5611 num_rules++;
5612 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5613 return -EINVAL;
5614 }
5615
5616 if (!reg_is_valid_request(alpha2))
5617 return -EINVAL;
5618
5619 size_of_regd = sizeof(struct ieee80211_regdomain) +
5620 num_rules * sizeof(struct ieee80211_reg_rule);
5621
5622 rd = kzalloc(size_of_regd, GFP_KERNEL);
5623 if (!rd)
5624 return -ENOMEM;
5625
5626 rd->n_reg_rules = num_rules;
5627 rd->alpha2[0] = alpha2[0];
5628 rd->alpha2[1] = alpha2[1];
5629
5630 /*
5631 * Disable DFS master mode if the DFS region was
5632 * not supported or known on this kernel.
5633 */
5634 if (reg_supported_dfs_region(dfs_region))
5635 rd->dfs_region = dfs_region;
5636
5637 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5638 rem_reg_rules) {
5639 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5640 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5641 reg_rule_policy);
5642 if (r)
5643 goto bad_reg;
5644 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5645 if (r)
5646 goto bad_reg;
5647
5648 rule_idx++;
5649
5650 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5651 r = -EINVAL;
5652 goto bad_reg;
5653 }
5654 }
5655
5656 r = set_regdom(rd);
5657 /* set_regdom took ownership */
5658 rd = NULL;
5659
5660 bad_reg:
5661 kfree(rd);
5662 return r;
5663}
5664
5665static int validate_scan_freqs(struct nlattr *freqs)
5666{
5667 struct nlattr *attr1, *attr2;
5668 int n_channels = 0, tmp1, tmp2;
5669
5670 nla_for_each_nested(attr1, freqs, tmp1) {
5671 n_channels++;
5672 /*
5673 * Some hardware has a limited channel list for
5674 * scanning, and it is pretty much nonsensical
5675 * to scan for a channel twice, so disallow that
5676 * and don't require drivers to check that the
5677 * channel list they get isn't longer than what
5678 * they can scan, as long as they can scan all
5679 * the channels they registered at once.
5680 */
5681 nla_for_each_nested(attr2, freqs, tmp2)
5682 if (attr1 != attr2 &&
5683 nla_get_u32(attr1) == nla_get_u32(attr2))
5684 return 0;
5685 }
5686
5687 return n_channels;
5688}
5689
5690static int nl80211_parse_random_mac(struct nlattr **attrs,
5691 u8 *mac_addr, u8 *mac_addr_mask)
5692{
5693 int i;
5694
5695 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5696 memset(mac_addr, 0, ETH_ALEN);
5697 memset(mac_addr_mask, 0, ETH_ALEN);
5698 mac_addr[0] = 0x2;
5699 mac_addr_mask[0] = 0x3;
5700
5701 return 0;
5702 }
5703
5704 /* need both or none */
5705 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5706 return -EINVAL;
5707
5708 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5709 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5710
5711 /* don't allow or configure an mcast address */
5712 if (!is_multicast_ether_addr(mac_addr_mask) ||
5713 is_multicast_ether_addr(mac_addr))
5714 return -EINVAL;
5715
5716 /*
5717 * allow users to pass a MAC address that has bits set outside
5718 * of the mask, but don't bother drivers with having to deal
5719 * with such bits
5720 */
5721 for (i = 0; i < ETH_ALEN; i++)
5722 mac_addr[i] &= mac_addr_mask[i];
5723
5724 return 0;
5725}
5726
5727static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5728{
5729 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5730 struct wireless_dev *wdev = info->user_ptr[1];
5731 struct cfg80211_scan_request *request;
5732 struct nlattr *attr;
5733 struct wiphy *wiphy;
5734 int err, tmp, n_ssids = 0, n_channels, i;
5735 size_t ie_len;
5736
5737 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5738 return -EINVAL;
5739
5740 wiphy = &rdev->wiphy;
5741
5742 if (!rdev->ops->scan)
5743 return -EOPNOTSUPP;
5744
5745 if (rdev->scan_req || rdev->scan_msg) {
5746 err = -EBUSY;
5747 goto unlock;
5748 }
5749
5750 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5751 n_channels = validate_scan_freqs(
5752 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5753 if (!n_channels) {
5754 err = -EINVAL;
5755 goto unlock;
5756 }
5757 } else {
5758 n_channels = ieee80211_get_num_supported_channels(wiphy);
5759 }
5760
5761 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5762 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5763 n_ssids++;
5764
5765 if (n_ssids > wiphy->max_scan_ssids) {
5766 err = -EINVAL;
5767 goto unlock;
5768 }
5769
5770 if (info->attrs[NL80211_ATTR_IE])
5771 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5772 else
5773 ie_len = 0;
5774
5775 if (ie_len > wiphy->max_scan_ie_len) {
5776 err = -EINVAL;
5777 goto unlock;
5778 }
5779
5780 request = kzalloc(sizeof(*request)
5781 + sizeof(*request->ssids) * n_ssids
5782 + sizeof(*request->channels) * n_channels
5783 + ie_len, GFP_KERNEL);
5784 if (!request) {
5785 err = -ENOMEM;
5786 goto unlock;
5787 }
5788
5789 if (n_ssids)
5790 request->ssids = (void *)&request->channels[n_channels];
5791 request->n_ssids = n_ssids;
5792 if (ie_len) {
5793 if (n_ssids)
5794 request->ie = (void *)(request->ssids + n_ssids);
5795 else
5796 request->ie = (void *)(request->channels + n_channels);
5797 }
5798
5799 i = 0;
5800 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5801 /* user specified, bail out if channel not found */
5802 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5803 struct ieee80211_channel *chan;
5804
5805 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5806
5807 if (!chan) {
5808 err = -EINVAL;
5809 goto out_free;
5810 }
5811
5812 /* ignore disabled channels */
5813 if (chan->flags & IEEE80211_CHAN_DISABLED)
5814 continue;
5815
5816 request->channels[i] = chan;
5817 i++;
5818 }
5819 } else {
5820 enum ieee80211_band band;
5821
5822 /* all channels */
5823 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5824 int j;
5825 if (!wiphy->bands[band])
5826 continue;
5827 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5828 struct ieee80211_channel *chan;
5829
5830 chan = &wiphy->bands[band]->channels[j];
5831
5832 if (chan->flags & IEEE80211_CHAN_DISABLED)
5833 continue;
5834
5835 request->channels[i] = chan;
5836 i++;
5837 }
5838 }
5839 }
5840
5841 if (!i) {
5842 err = -EINVAL;
5843 goto out_free;
5844 }
5845
5846 request->n_channels = i;
5847
5848 i = 0;
5849 if (n_ssids) {
5850 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5851 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5852 err = -EINVAL;
5853 goto out_free;
5854 }
5855 request->ssids[i].ssid_len = nla_len(attr);
5856 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5857 i++;
5858 }
5859 }
5860
5861 if (info->attrs[NL80211_ATTR_IE]) {
5862 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5863 memcpy((void *)request->ie,
5864 nla_data(info->attrs[NL80211_ATTR_IE]),
5865 request->ie_len);
5866 }
5867
5868 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5869 if (wiphy->bands[i])
5870 request->rates[i] =
5871 (1 << wiphy->bands[i]->n_bitrates) - 1;
5872
5873 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5874 nla_for_each_nested(attr,
5875 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5876 tmp) {
5877 enum ieee80211_band band = nla_type(attr);
5878
5879 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5880 err = -EINVAL;
5881 goto out_free;
5882 }
5883
5884 if (!wiphy->bands[band])
5885 continue;
5886
5887 err = ieee80211_get_ratemask(wiphy->bands[band],
5888 nla_data(attr),
5889 nla_len(attr),
5890 &request->rates[band]);
5891 if (err)
5892 goto out_free;
5893 }
5894 }
5895
5896 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5897 request->flags = nla_get_u32(
5898 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5899 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5900 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5901 err = -EOPNOTSUPP;
5902 goto out_free;
5903 }
5904
5905 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5906 if (!(wiphy->features &
5907 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5908 err = -EOPNOTSUPP;
5909 goto out_free;
5910 }
5911
5912 if (wdev->current_bss) {
5913 err = -EOPNOTSUPP;
5914 goto out_free;
5915 }
5916
5917 err = nl80211_parse_random_mac(info->attrs,
5918 request->mac_addr,
5919 request->mac_addr_mask);
5920 if (err)
5921 goto out_free;
5922 }
5923 }
5924
5925 request->no_cck =
5926 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5927
5928 request->wdev = wdev;
5929 request->wiphy = &rdev->wiphy;
5930 request->scan_start = jiffies;
5931
5932 rdev->scan_req = request;
5933 err = rdev_scan(rdev, request);
5934
5935 if (!err) {
5936 nl80211_send_scan_start(rdev, wdev);
5937 if (wdev->netdev)
5938 dev_hold(wdev->netdev);
5939 } else {
5940 out_free:
5941 rdev->scan_req = NULL;
5942 kfree(request);
5943 }
5944
5945 unlock:
5946 return err;
5947}
5948
5949static struct cfg80211_sched_scan_request *
5950nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5951 struct nlattr **attrs)
5952{
5953 struct cfg80211_sched_scan_request *request;
5954 struct nlattr *attr;
5955 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5956 u32 interval;
5957 enum ieee80211_band band;
5958 size_t ie_len;
5959 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5960 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5961
5962 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5963 return ERR_PTR(-EINVAL);
5964
5965 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5966 return ERR_PTR(-EINVAL);
5967
5968 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5969 if (interval == 0)
5970 return ERR_PTR(-EINVAL);
5971
5972 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5973 n_channels = validate_scan_freqs(
5974 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5975 if (!n_channels)
5976 return ERR_PTR(-EINVAL);
5977 } else {
5978 n_channels = ieee80211_get_num_supported_channels(wiphy);
5979 }
5980
5981 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5982 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5983 tmp)
5984 n_ssids++;
5985
5986 if (n_ssids > wiphy->max_sched_scan_ssids)
5987 return ERR_PTR(-EINVAL);
5988
5989 /*
5990 * First, count the number of 'real' matchsets. Due to an issue with
5991 * the old implementation, matchsets containing only the RSSI attribute
5992 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5993 * RSSI for all matchsets, rather than their own matchset for reporting
5994 * all APs with a strong RSSI. This is needed to be compatible with
5995 * older userspace that treated a matchset with only the RSSI as the
5996 * global RSSI for all other matchsets - if there are other matchsets.
5997 */
5998 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5999 nla_for_each_nested(attr,
6000 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6001 tmp) {
6002 struct nlattr *rssi;
6003
6004 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6005 nla_data(attr), nla_len(attr),
6006 nl80211_match_policy);
6007 if (err)
6008 return ERR_PTR(err);
6009 /* add other standalone attributes here */
6010 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6011 n_match_sets++;
6012 continue;
6013 }
6014 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6015 if (rssi)
6016 default_match_rssi = nla_get_s32(rssi);
6017 }
6018 }
6019
6020 /* However, if there's no other matchset, add the RSSI one */
6021 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6022 n_match_sets = 1;
6023
6024 if (n_match_sets > wiphy->max_match_sets)
6025 return ERR_PTR(-EINVAL);
6026
6027 if (attrs[NL80211_ATTR_IE])
6028 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6029 else
6030 ie_len = 0;
6031
6032 if (ie_len > wiphy->max_sched_scan_ie_len)
6033 return ERR_PTR(-EINVAL);
6034
6035 request = kzalloc(sizeof(*request)
6036 + sizeof(*request->ssids) * n_ssids
6037 + sizeof(*request->match_sets) * n_match_sets
6038 + sizeof(*request->channels) * n_channels
6039 + ie_len, GFP_KERNEL);
6040 if (!request)
6041 return ERR_PTR(-ENOMEM);
6042
6043 if (n_ssids)
6044 request->ssids = (void *)&request->channels[n_channels];
6045 request->n_ssids = n_ssids;
6046 if (ie_len) {
6047 if (n_ssids)
6048 request->ie = (void *)(request->ssids + n_ssids);
6049 else
6050 request->ie = (void *)(request->channels + n_channels);
6051 }
6052
6053 if (n_match_sets) {
6054 if (request->ie)
6055 request->match_sets = (void *)(request->ie + ie_len);
6056 else if (n_ssids)
6057 request->match_sets =
6058 (void *)(request->ssids + n_ssids);
6059 else
6060 request->match_sets =
6061 (void *)(request->channels + n_channels);
6062 }
6063 request->n_match_sets = n_match_sets;
6064
6065 i = 0;
6066 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6067 /* user specified, bail out if channel not found */
6068 nla_for_each_nested(attr,
6069 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6070 tmp) {
6071 struct ieee80211_channel *chan;
6072
6073 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6074
6075 if (!chan) {
6076 err = -EINVAL;
6077 goto out_free;
6078 }
6079
6080 /* ignore disabled channels */
6081 if (chan->flags & IEEE80211_CHAN_DISABLED)
6082 continue;
6083
6084 request->channels[i] = chan;
6085 i++;
6086 }
6087 } else {
6088 /* all channels */
6089 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6090 int j;
6091 if (!wiphy->bands[band])
6092 continue;
6093 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6094 struct ieee80211_channel *chan;
6095
6096 chan = &wiphy->bands[band]->channels[j];
6097
6098 if (chan->flags & IEEE80211_CHAN_DISABLED)
6099 continue;
6100
6101 request->channels[i] = chan;
6102 i++;
6103 }
6104 }
6105 }
6106
6107 if (!i) {
6108 err = -EINVAL;
6109 goto out_free;
6110 }
6111
6112 request->n_channels = i;
6113
6114 i = 0;
6115 if (n_ssids) {
6116 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6117 tmp) {
6118 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6119 err = -EINVAL;
6120 goto out_free;
6121 }
6122 request->ssids[i].ssid_len = nla_len(attr);
6123 memcpy(request->ssids[i].ssid, nla_data(attr),
6124 nla_len(attr));
6125 i++;
6126 }
6127 }
6128
6129 i = 0;
6130 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6131 nla_for_each_nested(attr,
6132 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6133 tmp) {
6134 struct nlattr *ssid, *rssi;
6135
6136 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6137 nla_data(attr), nla_len(attr),
6138 nl80211_match_policy);
6139 if (err)
6140 goto out_free;
6141 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6142 if (ssid) {
6143 if (WARN_ON(i >= n_match_sets)) {
6144 /* this indicates a programming error,
6145 * the loop above should have verified
6146 * things properly
6147 */
6148 err = -EINVAL;
6149 goto out_free;
6150 }
6151
6152 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6153 err = -EINVAL;
6154 goto out_free;
6155 }
6156 memcpy(request->match_sets[i].ssid.ssid,
6157 nla_data(ssid), nla_len(ssid));
6158 request->match_sets[i].ssid.ssid_len =
6159 nla_len(ssid);
6160 /* special attribute - old implemenation w/a */
6161 request->match_sets[i].rssi_thold =
6162 default_match_rssi;
6163 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6164 if (rssi)
6165 request->match_sets[i].rssi_thold =
6166 nla_get_s32(rssi);
6167 }
6168 i++;
6169 }
6170
6171 /* there was no other matchset, so the RSSI one is alone */
6172 if (i == 0 && n_match_sets)
6173 request->match_sets[0].rssi_thold = default_match_rssi;
6174
6175 request->min_rssi_thold = INT_MAX;
6176 for (i = 0; i < n_match_sets; i++)
6177 request->min_rssi_thold =
6178 min(request->match_sets[i].rssi_thold,
6179 request->min_rssi_thold);
6180 } else {
6181 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6182 }
6183
6184 if (ie_len) {
6185 request->ie_len = ie_len;
6186 memcpy((void *)request->ie,
6187 nla_data(attrs[NL80211_ATTR_IE]),
6188 request->ie_len);
6189 }
6190
6191 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6192 request->flags = nla_get_u32(
6193 attrs[NL80211_ATTR_SCAN_FLAGS]);
6194 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6195 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6196 err = -EOPNOTSUPP;
6197 goto out_free;
6198 }
6199
6200 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6201 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6202
6203 if (!wdev) /* must be net-detect */
6204 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6205
6206 if (!(wiphy->features & flg)) {
6207 err = -EOPNOTSUPP;
6208 goto out_free;
6209 }
6210
6211 if (wdev && wdev->current_bss) {
6212 err = -EOPNOTSUPP;
6213 goto out_free;
6214 }
6215
6216 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6217 request->mac_addr_mask);
6218 if (err)
6219 goto out_free;
6220 }
6221 }
6222
6223 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6224 request->delay =
6225 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6226
6227 request->interval = interval;
6228 request->scan_start = jiffies;
6229
6230 return request;
6231
6232out_free:
6233 kfree(request);
6234 return ERR_PTR(err);
6235}
6236
6237static int nl80211_start_sched_scan(struct sk_buff *skb,
6238 struct genl_info *info)
6239{
6240 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6241 struct net_device *dev = info->user_ptr[1];
6242 struct wireless_dev *wdev = dev->ieee80211_ptr;
6243 struct cfg80211_sched_scan_request *sched_scan_req;
6244 int err;
6245
6246 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6247 !rdev->ops->sched_scan_start)
6248 return -EOPNOTSUPP;
6249
6250 if (rdev->sched_scan_req)
6251 return -EINPROGRESS;
6252
6253 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6254 info->attrs);
6255
6256 err = PTR_ERR_OR_ZERO(sched_scan_req);
6257 if (err)
6258 goto out_err;
6259
6260 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6261 if (err)
6262 goto out_free;
6263
6264 sched_scan_req->dev = dev;
6265 sched_scan_req->wiphy = &rdev->wiphy;
6266
6267 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6268 sched_scan_req->owner_nlportid = info->snd_portid;
6269
6270 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6271
6272 nl80211_send_sched_scan(rdev, dev,
6273 NL80211_CMD_START_SCHED_SCAN);
6274 return 0;
6275
6276out_free:
6277 kfree(sched_scan_req);
6278out_err:
6279 return err;
6280}
6281
6282static int nl80211_stop_sched_scan(struct sk_buff *skb,
6283 struct genl_info *info)
6284{
6285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6286
6287 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6288 !rdev->ops->sched_scan_stop)
6289 return -EOPNOTSUPP;
6290
6291 return __cfg80211_stop_sched_scan(rdev, false);
6292}
6293
6294static int nl80211_start_radar_detection(struct sk_buff *skb,
6295 struct genl_info *info)
6296{
6297 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6298 struct net_device *dev = info->user_ptr[1];
6299 struct wireless_dev *wdev = dev->ieee80211_ptr;
6300 struct cfg80211_chan_def chandef;
6301 enum nl80211_dfs_regions dfs_region;
6302 unsigned int cac_time_ms;
6303 int err;
6304
6305 dfs_region = reg_get_dfs_region(wdev->wiphy);
6306 if (dfs_region == NL80211_DFS_UNSET)
6307 return -EINVAL;
6308
6309 err = nl80211_parse_chandef(rdev, info, &chandef);
6310 if (err)
6311 return err;
6312
6313 if (netif_carrier_ok(dev))
6314 return -EBUSY;
6315
6316 if (wdev->cac_started)
6317 return -EBUSY;
6318
6319 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6320 wdev->iftype);
6321 if (err < 0)
6322 return err;
6323
6324 if (err == 0)
6325 return -EINVAL;
6326
6327 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6328 return -EINVAL;
6329
6330 if (!rdev->ops->start_radar_detection)
6331 return -EOPNOTSUPP;
6332
6333 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6334 if (WARN_ON(!cac_time_ms))
6335 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6336
6337 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6338 cac_time_ms);
6339 if (!err) {
6340 wdev->chandef = chandef;
6341 wdev->cac_started = true;
6342 wdev->cac_start_time = jiffies;
6343 wdev->cac_time_ms = cac_time_ms;
6344 }
6345 return err;
6346}
6347
6348static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6349{
6350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6351 struct net_device *dev = info->user_ptr[1];
6352 struct wireless_dev *wdev = dev->ieee80211_ptr;
6353 struct cfg80211_csa_settings params;
6354 /* csa_attrs is defined static to avoid waste of stack size - this
6355 * function is called under RTNL lock, so this should not be a problem.
6356 */
6357 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6358 int err;
6359 bool need_new_beacon = false;
6360 int len, i;
6361 u32 cs_count;
6362
6363 if (!rdev->ops->channel_switch ||
6364 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6365 return -EOPNOTSUPP;
6366
6367 switch (dev->ieee80211_ptr->iftype) {
6368 case NL80211_IFTYPE_AP:
6369 case NL80211_IFTYPE_P2P_GO:
6370 need_new_beacon = true;
6371
6372 /* useless if AP is not running */
6373 if (!wdev->beacon_interval)
6374 return -ENOTCONN;
6375 break;
6376 case NL80211_IFTYPE_ADHOC:
6377 if (!wdev->ssid_len)
6378 return -ENOTCONN;
6379 break;
6380 case NL80211_IFTYPE_MESH_POINT:
6381 if (!wdev->mesh_id_len)
6382 return -ENOTCONN;
6383 break;
6384 default:
6385 return -EOPNOTSUPP;
6386 }
6387
6388 memset(&params, 0, sizeof(params));
6389
6390 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6391 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6392 return -EINVAL;
6393
6394 /* only important for AP, IBSS and mesh create IEs internally */
6395 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6396 return -EINVAL;
6397
6398 /* Even though the attribute is u32, the specification says
6399 * u8, so let's make sure we don't overflow.
6400 */
6401 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6402 if (cs_count > 255)
6403 return -EINVAL;
6404
6405 params.count = cs_count;
6406
6407 if (!need_new_beacon)
6408 goto skip_beacons;
6409
6410 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6411 if (err)
6412 return err;
6413
6414 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6415 info->attrs[NL80211_ATTR_CSA_IES],
6416 nl80211_policy);
6417 if (err)
6418 return err;
6419
6420 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6421 if (err)
6422 return err;
6423
6424 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6425 return -EINVAL;
6426
6427 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6428 if (!len || (len % sizeof(u16)))
6429 return -EINVAL;
6430
6431 params.n_counter_offsets_beacon = len / sizeof(u16);
6432 if (rdev->wiphy.max_num_csa_counters &&
6433 (params.n_counter_offsets_beacon >
6434 rdev->wiphy.max_num_csa_counters))
6435 return -EINVAL;
6436
6437 params.counter_offsets_beacon =
6438 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6439
6440 /* sanity checks - counters should fit and be the same */
6441 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6442 u16 offset = params.counter_offsets_beacon[i];
6443
6444 if (offset >= params.beacon_csa.tail_len)
6445 return -EINVAL;
6446
6447 if (params.beacon_csa.tail[offset] != params.count)
6448 return -EINVAL;
6449 }
6450
6451 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6452 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6453 if (!len || (len % sizeof(u16)))
6454 return -EINVAL;
6455
6456 params.n_counter_offsets_presp = len / sizeof(u16);
6457 if (rdev->wiphy.max_num_csa_counters &&
6458 (params.n_counter_offsets_beacon >
6459 rdev->wiphy.max_num_csa_counters))
6460 return -EINVAL;
6461
6462 params.counter_offsets_presp =
6463 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6464
6465 /* sanity checks - counters should fit and be the same */
6466 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6467 u16 offset = params.counter_offsets_presp[i];
6468
6469 if (offset >= params.beacon_csa.probe_resp_len)
6470 return -EINVAL;
6471
6472 if (params.beacon_csa.probe_resp[offset] !=
6473 params.count)
6474 return -EINVAL;
6475 }
6476 }
6477
6478skip_beacons:
6479 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6480 if (err)
6481 return err;
6482
6483 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6484 wdev->iftype))
6485 return -EINVAL;
6486
6487 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6488 &params.chandef,
6489 wdev->iftype);
6490 if (err < 0)
6491 return err;
6492
6493 if (err > 0)
6494 params.radar_required = true;
6495
6496 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6497 params.block_tx = true;
6498
6499 wdev_lock(wdev);
6500 err = rdev_channel_switch(rdev, dev, &params);
6501 wdev_unlock(wdev);
6502
6503 return err;
6504}
6505
6506static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6507 u32 seq, int flags,
6508 struct cfg80211_registered_device *rdev,
6509 struct wireless_dev *wdev,
6510 struct cfg80211_internal_bss *intbss)
6511{
6512 struct cfg80211_bss *res = &intbss->pub;
6513 const struct cfg80211_bss_ies *ies;
6514 void *hdr;
6515 struct nlattr *bss;
6516
6517 ASSERT_WDEV_LOCK(wdev);
6518
6519 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6520 NL80211_CMD_NEW_SCAN_RESULTS);
6521 if (!hdr)
6522 return -1;
6523
6524 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6525
6526 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6527 goto nla_put_failure;
6528 if (wdev->netdev &&
6529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6530 goto nla_put_failure;
6531 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6532 goto nla_put_failure;
6533
6534 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6535 if (!bss)
6536 goto nla_put_failure;
6537 if ((!is_zero_ether_addr(res->bssid) &&
6538 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6539 goto nla_put_failure;
6540
6541 rcu_read_lock();
6542 /* indicate whether we have probe response data or not */
6543 if (rcu_access_pointer(res->proberesp_ies) &&
6544 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6545 goto fail_unlock_rcu;
6546
6547 /* this pointer prefers to be pointed to probe response data
6548 * but is always valid
6549 */
6550 ies = rcu_dereference(res->ies);
6551 if (ies) {
6552 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6553 goto fail_unlock_rcu;
6554 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6555 ies->len, ies->data))
6556 goto fail_unlock_rcu;
6557 }
6558
6559 /* and this pointer is always (unless driver didn't know) beacon data */
6560 ies = rcu_dereference(res->beacon_ies);
6561 if (ies && ies->from_beacon) {
6562 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6563 goto fail_unlock_rcu;
6564 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6565 ies->len, ies->data))
6566 goto fail_unlock_rcu;
6567 }
6568 rcu_read_unlock();
6569
6570 if (res->beacon_interval &&
6571 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6572 goto nla_put_failure;
6573 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6574 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6575 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6576 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6577 jiffies_to_msecs(jiffies - intbss->ts)))
6578 goto nla_put_failure;
6579
6580 switch (rdev->wiphy.signal_type) {
6581 case CFG80211_SIGNAL_TYPE_MBM:
6582 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6583 goto nla_put_failure;
6584 break;
6585 case CFG80211_SIGNAL_TYPE_UNSPEC:
6586 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6587 goto nla_put_failure;
6588 break;
6589 default:
6590 break;
6591 }
6592
6593 switch (wdev->iftype) {
6594 case NL80211_IFTYPE_P2P_CLIENT:
6595 case NL80211_IFTYPE_STATION:
6596 if (intbss == wdev->current_bss &&
6597 nla_put_u32(msg, NL80211_BSS_STATUS,
6598 NL80211_BSS_STATUS_ASSOCIATED))
6599 goto nla_put_failure;
6600 break;
6601 case NL80211_IFTYPE_ADHOC:
6602 if (intbss == wdev->current_bss &&
6603 nla_put_u32(msg, NL80211_BSS_STATUS,
6604 NL80211_BSS_STATUS_IBSS_JOINED))
6605 goto nla_put_failure;
6606 break;
6607 default:
6608 break;
6609 }
6610
6611 nla_nest_end(msg, bss);
6612
6613 genlmsg_end(msg, hdr);
6614 return 0;
6615
6616 fail_unlock_rcu:
6617 rcu_read_unlock();
6618 nla_put_failure:
6619 genlmsg_cancel(msg, hdr);
6620 return -EMSGSIZE;
6621}
6622
6623static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6624{
6625 struct cfg80211_registered_device *rdev;
6626 struct cfg80211_internal_bss *scan;
6627 struct wireless_dev *wdev;
6628 int start = cb->args[2], idx = 0;
6629 int err;
6630
6631 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6632 if (err)
6633 return err;
6634
6635 wdev_lock(wdev);
6636 spin_lock_bh(&rdev->bss_lock);
6637 cfg80211_bss_expire(rdev);
6638
6639 cb->seq = rdev->bss_generation;
6640
6641 list_for_each_entry(scan, &rdev->bss_list, list) {
6642 if (++idx <= start)
6643 continue;
6644 if (nl80211_send_bss(skb, cb,
6645 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6646 rdev, wdev, scan) < 0) {
6647 idx--;
6648 break;
6649 }
6650 }
6651
6652 spin_unlock_bh(&rdev->bss_lock);
6653 wdev_unlock(wdev);
6654
6655 cb->args[2] = idx;
6656 nl80211_finish_wdev_dump(rdev);
6657
6658 return skb->len;
6659}
6660
6661static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6662 int flags, struct net_device *dev,
6663 bool allow_radio_stats,
6664 struct survey_info *survey)
6665{
6666 void *hdr;
6667 struct nlattr *infoattr;
6668
6669 /* skip radio stats if userspace didn't request them */
6670 if (!survey->channel && !allow_radio_stats)
6671 return 0;
6672
6673 hdr = nl80211hdr_put(msg, portid, seq, flags,
6674 NL80211_CMD_NEW_SURVEY_RESULTS);
6675 if (!hdr)
6676 return -ENOMEM;
6677
6678 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6679 goto nla_put_failure;
6680
6681 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6682 if (!infoattr)
6683 goto nla_put_failure;
6684
6685 if (survey->channel &&
6686 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6687 survey->channel->center_freq))
6688 goto nla_put_failure;
6689
6690 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6691 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6692 goto nla_put_failure;
6693 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6694 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6695 goto nla_put_failure;
6696 if ((survey->filled & SURVEY_INFO_TIME) &&
6697 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6698 survey->time))
6699 goto nla_put_failure;
6700 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6701 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6702 survey->time_busy))
6703 goto nla_put_failure;
6704 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6705 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6706 survey->time_ext_busy))
6707 goto nla_put_failure;
6708 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6709 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6710 survey->time_rx))
6711 goto nla_put_failure;
6712 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6713 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6714 survey->time_tx))
6715 goto nla_put_failure;
6716 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6717 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6718 survey->time_scan))
6719 goto nla_put_failure;
6720
6721 nla_nest_end(msg, infoattr);
6722
6723 genlmsg_end(msg, hdr);
6724 return 0;
6725
6726 nla_put_failure:
6727 genlmsg_cancel(msg, hdr);
6728 return -EMSGSIZE;
6729}
6730
6731static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6732{
6733 struct survey_info survey;
6734 struct cfg80211_registered_device *rdev;
6735 struct wireless_dev *wdev;
6736 int survey_idx = cb->args[2];
6737 int res;
6738 bool radio_stats;
6739
6740 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6741 if (res)
6742 return res;
6743
6744 /* prepare_wdev_dump parsed the attributes */
6745 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6746
6747 if (!wdev->netdev) {
6748 res = -EINVAL;
6749 goto out_err;
6750 }
6751
6752 if (!rdev->ops->dump_survey) {
6753 res = -EOPNOTSUPP;
6754 goto out_err;
6755 }
6756
6757 while (1) {
6758 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6759 if (res == -ENOENT)
6760 break;
6761 if (res)
6762 goto out_err;
6763
6764 /* don't send disabled channels, but do send non-channel data */
6765 if (survey.channel &&
6766 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6767 survey_idx++;
6768 continue;
6769 }
6770
6771 if (nl80211_send_survey(skb,
6772 NETLINK_CB(cb->skb).portid,
6773 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6774 wdev->netdev, radio_stats, &survey) < 0)
6775 goto out;
6776 survey_idx++;
6777 }
6778
6779 out:
6780 cb->args[2] = survey_idx;
6781 res = skb->len;
6782 out_err:
6783 nl80211_finish_wdev_dump(rdev);
6784 return res;
6785}
6786
6787static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6788{
6789 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6790 NL80211_WPA_VERSION_2));
6791}
6792
6793static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6794{
6795 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6796 struct net_device *dev = info->user_ptr[1];
6797 struct ieee80211_channel *chan;
6798 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6799 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6800 enum nl80211_auth_type auth_type;
6801 struct key_parse key;
6802 bool local_state_change;
6803
6804 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6805 return -EINVAL;
6806
6807 if (!info->attrs[NL80211_ATTR_MAC])
6808 return -EINVAL;
6809
6810 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6811 return -EINVAL;
6812
6813 if (!info->attrs[NL80211_ATTR_SSID])
6814 return -EINVAL;
6815
6816 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6817 return -EINVAL;
6818
6819 err = nl80211_parse_key(info, &key);
6820 if (err)
6821 return err;
6822
6823 if (key.idx >= 0) {
6824 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6825 return -EINVAL;
6826 if (!key.p.key || !key.p.key_len)
6827 return -EINVAL;
6828 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6829 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6830 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6831 key.p.key_len != WLAN_KEY_LEN_WEP104))
6832 return -EINVAL;
6833 if (key.idx > 4)
6834 return -EINVAL;
6835 } else {
6836 key.p.key_len = 0;
6837 key.p.key = NULL;
6838 }
6839
6840 if (key.idx >= 0) {
6841 int i;
6842 bool ok = false;
6843 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6844 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6845 ok = true;
6846 break;
6847 }
6848 }
6849 if (!ok)
6850 return -EINVAL;
6851 }
6852
6853 if (!rdev->ops->auth)
6854 return -EOPNOTSUPP;
6855
6856 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6857 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6858 return -EOPNOTSUPP;
6859
6860 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6861 chan = nl80211_get_valid_chan(&rdev->wiphy,
6862 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6863 if (!chan)
6864 return -EINVAL;
6865
6866 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6867 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6868
6869 if (info->attrs[NL80211_ATTR_IE]) {
6870 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6871 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6872 }
6873
6874 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6875 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6876 return -EINVAL;
6877
6878 if (auth_type == NL80211_AUTHTYPE_SAE &&
6879 !info->attrs[NL80211_ATTR_SAE_DATA])
6880 return -EINVAL;
6881
6882 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6883 if (auth_type != NL80211_AUTHTYPE_SAE)
6884 return -EINVAL;
6885 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6886 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6887 /* need to include at least Auth Transaction and Status Code */
6888 if (sae_data_len < 4)
6889 return -EINVAL;
6890 }
6891
6892 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6893
6894 /*
6895 * Since we no longer track auth state, ignore
6896 * requests to only change local state.
6897 */
6898 if (local_state_change)
6899 return 0;
6900
6901 wdev_lock(dev->ieee80211_ptr);
6902 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6903 ssid, ssid_len, ie, ie_len,
6904 key.p.key, key.p.key_len, key.idx,
6905 sae_data, sae_data_len);
6906 wdev_unlock(dev->ieee80211_ptr);
6907 return err;
6908}
6909
6910static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6911 struct genl_info *info,
6912 struct cfg80211_crypto_settings *settings,
6913 int cipher_limit)
6914{
6915 memset(settings, 0, sizeof(*settings));
6916
6917 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6918
6919 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6920 u16 proto;
6921 proto = nla_get_u16(
6922 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6923 settings->control_port_ethertype = cpu_to_be16(proto);
6924 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6925 proto != ETH_P_PAE)
6926 return -EINVAL;
6927 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6928 settings->control_port_no_encrypt = true;
6929 } else
6930 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6931
6932 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6933 void *data;
6934 int len, i;
6935
6936 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6937 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6938 settings->n_ciphers_pairwise = len / sizeof(u32);
6939
6940 if (len % sizeof(u32))
6941 return -EINVAL;
6942
6943 if (settings->n_ciphers_pairwise > cipher_limit)
6944 return -EINVAL;
6945
6946 memcpy(settings->ciphers_pairwise, data, len);
6947
6948 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6949 if (!cfg80211_supported_cipher_suite(
6950 &rdev->wiphy,
6951 settings->ciphers_pairwise[i]))
6952 return -EINVAL;
6953 }
6954
6955 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6956 settings->cipher_group =
6957 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6958 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6959 settings->cipher_group))
6960 return -EINVAL;
6961 }
6962
6963 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6964 settings->wpa_versions =
6965 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6966 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6967 return -EINVAL;
6968 }
6969
6970 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6971 void *data;
6972 int len;
6973
6974 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6975 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6976 settings->n_akm_suites = len / sizeof(u32);
6977
6978 if (len % sizeof(u32))
6979 return -EINVAL;
6980
6981 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6982 return -EINVAL;
6983
6984 memcpy(settings->akm_suites, data, len);
6985 }
6986
6987 return 0;
6988}
6989
6990static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6991{
6992 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6993 struct net_device *dev = info->user_ptr[1];
6994 struct ieee80211_channel *chan;
6995 struct cfg80211_assoc_request req = {};
6996 const u8 *bssid, *ssid;
6997 int err, ssid_len = 0;
6998
6999 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7000 return -EINVAL;
7001
7002 if (!info->attrs[NL80211_ATTR_MAC] ||
7003 !info->attrs[NL80211_ATTR_SSID] ||
7004 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7005 return -EINVAL;
7006
7007 if (!rdev->ops->assoc)
7008 return -EOPNOTSUPP;
7009
7010 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7011 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7012 return -EOPNOTSUPP;
7013
7014 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7015
7016 chan = nl80211_get_valid_chan(&rdev->wiphy,
7017 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7018 if (!chan)
7019 return -EINVAL;
7020
7021 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7022 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7023
7024 if (info->attrs[NL80211_ATTR_IE]) {
7025 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7026 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7027 }
7028
7029 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7030 enum nl80211_mfp mfp =
7031 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7032 if (mfp == NL80211_MFP_REQUIRED)
7033 req.use_mfp = true;
7034 else if (mfp != NL80211_MFP_NO)
7035 return -EINVAL;
7036 }
7037
7038 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7039 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7040
7041 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7042 req.flags |= ASSOC_REQ_DISABLE_HT;
7043
7044 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7045 memcpy(&req.ht_capa_mask,
7046 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7047 sizeof(req.ht_capa_mask));
7048
7049 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7050 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7051 return -EINVAL;
7052 memcpy(&req.ht_capa,
7053 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7054 sizeof(req.ht_capa));
7055 }
7056
7057 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7058 req.flags |= ASSOC_REQ_DISABLE_VHT;
7059
7060 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7061 memcpy(&req.vht_capa_mask,
7062 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7063 sizeof(req.vht_capa_mask));
7064
7065 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7066 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7067 return -EINVAL;
7068 memcpy(&req.vht_capa,
7069 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7070 sizeof(req.vht_capa));
7071 }
7072
7073 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7074 if (!(rdev->wiphy.features &
7075 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7076 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7077 return -EINVAL;
7078 req.flags |= ASSOC_REQ_USE_RRM;
7079 }
7080
7081 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7082 if (!err) {
7083 wdev_lock(dev->ieee80211_ptr);
7084 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7085 ssid, ssid_len, &req);
7086 wdev_unlock(dev->ieee80211_ptr);
7087 }
7088
7089 return err;
7090}
7091
7092static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7093{
7094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7095 struct net_device *dev = info->user_ptr[1];
7096 const u8 *ie = NULL, *bssid;
7097 int ie_len = 0, err;
7098 u16 reason_code;
7099 bool local_state_change;
7100
7101 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7102 return -EINVAL;
7103
7104 if (!info->attrs[NL80211_ATTR_MAC])
7105 return -EINVAL;
7106
7107 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7108 return -EINVAL;
7109
7110 if (!rdev->ops->deauth)
7111 return -EOPNOTSUPP;
7112
7113 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7114 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7115 return -EOPNOTSUPP;
7116
7117 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7118
7119 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7120 if (reason_code == 0) {
7121 /* Reason Code 0 is reserved */
7122 return -EINVAL;
7123 }
7124
7125 if (info->attrs[NL80211_ATTR_IE]) {
7126 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7127 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7128 }
7129
7130 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7131
7132 wdev_lock(dev->ieee80211_ptr);
7133 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7134 local_state_change);
7135 wdev_unlock(dev->ieee80211_ptr);
7136 return err;
7137}
7138
7139static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7140{
7141 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7142 struct net_device *dev = info->user_ptr[1];
7143 const u8 *ie = NULL, *bssid;
7144 int ie_len = 0, err;
7145 u16 reason_code;
7146 bool local_state_change;
7147
7148 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7149 return -EINVAL;
7150
7151 if (!info->attrs[NL80211_ATTR_MAC])
7152 return -EINVAL;
7153
7154 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7155 return -EINVAL;
7156
7157 if (!rdev->ops->disassoc)
7158 return -EOPNOTSUPP;
7159
7160 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7161 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7162 return -EOPNOTSUPP;
7163
7164 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7165
7166 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7167 if (reason_code == 0) {
7168 /* Reason Code 0 is reserved */
7169 return -EINVAL;
7170 }
7171
7172 if (info->attrs[NL80211_ATTR_IE]) {
7173 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7174 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7175 }
7176
7177 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7178
7179 wdev_lock(dev->ieee80211_ptr);
7180 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7181 local_state_change);
7182 wdev_unlock(dev->ieee80211_ptr);
7183 return err;
7184}
7185
7186static bool
7187nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7188 int mcast_rate[IEEE80211_NUM_BANDS],
7189 int rateval)
7190{
7191 struct wiphy *wiphy = &rdev->wiphy;
7192 bool found = false;
7193 int band, i;
7194
7195 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7196 struct ieee80211_supported_band *sband;
7197
7198 sband = wiphy->bands[band];
7199 if (!sband)
7200 continue;
7201
7202 for (i = 0; i < sband->n_bitrates; i++) {
7203 if (sband->bitrates[i].bitrate == rateval) {
7204 mcast_rate[band] = i + 1;
7205 found = true;
7206 break;
7207 }
7208 }
7209 }
7210
7211 return found;
7212}
7213
7214static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7215{
7216 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7217 struct net_device *dev = info->user_ptr[1];
7218 struct cfg80211_ibss_params ibss;
7219 struct wiphy *wiphy;
7220 struct cfg80211_cached_keys *connkeys = NULL;
7221 int err;
7222
7223 memset(&ibss, 0, sizeof(ibss));
7224
7225 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7226 return -EINVAL;
7227
7228 if (!info->attrs[NL80211_ATTR_SSID] ||
7229 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7230 return -EINVAL;
7231
7232 ibss.beacon_interval = 100;
7233
7234 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7235 ibss.beacon_interval =
7236 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7237 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7238 return -EINVAL;
7239 }
7240
7241 if (!rdev->ops->join_ibss)
7242 return -EOPNOTSUPP;
7243
7244 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7245 return -EOPNOTSUPP;
7246
7247 wiphy = &rdev->wiphy;
7248
7249 if (info->attrs[NL80211_ATTR_MAC]) {
7250 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7251
7252 if (!is_valid_ether_addr(ibss.bssid))
7253 return -EINVAL;
7254 }
7255 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7256 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7257
7258 if (info->attrs[NL80211_ATTR_IE]) {
7259 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7260 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7261 }
7262
7263 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7264 if (err)
7265 return err;
7266
7267 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7268 NL80211_IFTYPE_ADHOC))
7269 return -EINVAL;
7270
7271 switch (ibss.chandef.width) {
7272 case NL80211_CHAN_WIDTH_5:
7273 case NL80211_CHAN_WIDTH_10:
7274 case NL80211_CHAN_WIDTH_20_NOHT:
7275 break;
7276 case NL80211_CHAN_WIDTH_20:
7277 case NL80211_CHAN_WIDTH_40:
7278 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7279 break;
7280 default:
7281 return -EINVAL;
7282 }
7283
7284 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7285 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7286
7287 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7288 u8 *rates =
7289 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7290 int n_rates =
7291 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7292 struct ieee80211_supported_band *sband =
7293 wiphy->bands[ibss.chandef.chan->band];
7294
7295 err = ieee80211_get_ratemask(sband, rates, n_rates,
7296 &ibss.basic_rates);
7297 if (err)
7298 return err;
7299 }
7300
7301 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7302 memcpy(&ibss.ht_capa_mask,
7303 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7304 sizeof(ibss.ht_capa_mask));
7305
7306 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7307 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7308 return -EINVAL;
7309 memcpy(&ibss.ht_capa,
7310 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7311 sizeof(ibss.ht_capa));
7312 }
7313
7314 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7315 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7316 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7317 return -EINVAL;
7318
7319 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7320 bool no_ht = false;
7321
7322 connkeys = nl80211_parse_connkeys(rdev,
7323 info->attrs[NL80211_ATTR_KEYS],
7324 &no_ht);
7325 if (IS_ERR(connkeys))
7326 return PTR_ERR(connkeys);
7327
7328 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7329 no_ht) {
7330 kfree(connkeys);
7331 return -EINVAL;
7332 }
7333 }
7334
7335 ibss.control_port =
7336 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7337
7338 ibss.userspace_handles_dfs =
7339 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7340
7341 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7342 if (err)
7343 kzfree(connkeys);
7344 return err;
7345}
7346
7347static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7348{
7349 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7350 struct net_device *dev = info->user_ptr[1];
7351
7352 if (!rdev->ops->leave_ibss)
7353 return -EOPNOTSUPP;
7354
7355 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7356 return -EOPNOTSUPP;
7357
7358 return cfg80211_leave_ibss(rdev, dev, false);
7359}
7360
7361static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7362{
7363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7364 struct net_device *dev = info->user_ptr[1];
7365 int mcast_rate[IEEE80211_NUM_BANDS];
7366 u32 nla_rate;
7367 int err;
7368
7369 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7370 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7371 return -EOPNOTSUPP;
7372
7373 if (!rdev->ops->set_mcast_rate)
7374 return -EOPNOTSUPP;
7375
7376 memset(mcast_rate, 0, sizeof(mcast_rate));
7377
7378 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7379 return -EINVAL;
7380
7381 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7382 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7383 return -EINVAL;
7384
7385 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7386
7387 return err;
7388}
7389
7390static struct sk_buff *
7391__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7392 int approxlen, u32 portid, u32 seq,
7393 enum nl80211_commands cmd,
7394 enum nl80211_attrs attr,
7395 const struct nl80211_vendor_cmd_info *info,
7396 gfp_t gfp)
7397{
7398 struct sk_buff *skb;
7399 void *hdr;
7400 struct nlattr *data;
7401
7402 skb = nlmsg_new(approxlen + 100, gfp);
7403 if (!skb)
7404 return NULL;
7405
7406 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7407 if (!hdr) {
7408 kfree_skb(skb);
7409 return NULL;
7410 }
7411
7412 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7413 goto nla_put_failure;
7414
7415 if (info) {
7416 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7417 info->vendor_id))
7418 goto nla_put_failure;
7419 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7420 info->subcmd))
7421 goto nla_put_failure;
7422 }
7423
7424 data = nla_nest_start(skb, attr);
7425
7426 ((void **)skb->cb)[0] = rdev;
7427 ((void **)skb->cb)[1] = hdr;
7428 ((void **)skb->cb)[2] = data;
7429
7430 return skb;
7431
7432 nla_put_failure:
7433 kfree_skb(skb);
7434 return NULL;
7435}
7436
7437struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7438 enum nl80211_commands cmd,
7439 enum nl80211_attrs attr,
7440 int vendor_event_idx,
7441 int approxlen, gfp_t gfp)
7442{
7443 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7444 const struct nl80211_vendor_cmd_info *info;
7445
7446 switch (cmd) {
7447 case NL80211_CMD_TESTMODE:
7448 if (WARN_ON(vendor_event_idx != -1))
7449 return NULL;
7450 info = NULL;
7451 break;
7452 case NL80211_CMD_VENDOR:
7453 if (WARN_ON(vendor_event_idx < 0 ||
7454 vendor_event_idx >= wiphy->n_vendor_events))
7455 return NULL;
7456 info = &wiphy->vendor_events[vendor_event_idx];
7457 break;
7458 default:
7459 WARN_ON(1);
7460 return NULL;
7461 }
7462
7463 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7464 cmd, attr, info, gfp);
7465}
7466EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7467
7468void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7469{
7470 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7471 void *hdr = ((void **)skb->cb)[1];
7472 struct nlattr *data = ((void **)skb->cb)[2];
7473 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7474
7475 /* clear CB data for netlink core to own from now on */
7476 memset(skb->cb, 0, sizeof(skb->cb));
7477
7478 nla_nest_end(skb, data);
7479 genlmsg_end(skb, hdr);
7480
7481 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7482 mcgrp = NL80211_MCGRP_VENDOR;
7483
7484 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7485 mcgrp, gfp);
7486}
7487EXPORT_SYMBOL(__cfg80211_send_event_skb);
7488
7489#ifdef CONFIG_NL80211_TESTMODE
7490static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7491{
7492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7493 struct wireless_dev *wdev =
7494 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7495 int err;
7496
7497 if (!rdev->ops->testmode_cmd)
7498 return -EOPNOTSUPP;
7499
7500 if (IS_ERR(wdev)) {
7501 err = PTR_ERR(wdev);
7502 if (err != -EINVAL)
7503 return err;
7504 wdev = NULL;
7505 } else if (wdev->wiphy != &rdev->wiphy) {
7506 return -EINVAL;
7507 }
7508
7509 if (!info->attrs[NL80211_ATTR_TESTDATA])
7510 return -EINVAL;
7511
7512 rdev->cur_cmd_info = info;
7513 err = rdev_testmode_cmd(rdev, wdev,
7514 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7515 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7516 rdev->cur_cmd_info = NULL;
7517
7518 return err;
7519}
7520
7521static int nl80211_testmode_dump(struct sk_buff *skb,
7522 struct netlink_callback *cb)
7523{
7524 struct cfg80211_registered_device *rdev;
7525 int err;
7526 long phy_idx;
7527 void *data = NULL;
7528 int data_len = 0;
7529
7530 rtnl_lock();
7531
7532 if (cb->args[0]) {
7533 /*
7534 * 0 is a valid index, but not valid for args[0],
7535 * so we need to offset by 1.
7536 */
7537 phy_idx = cb->args[0] - 1;
7538 } else {
7539 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7540 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7541 nl80211_policy);
7542 if (err)
7543 goto out_err;
7544
7545 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7546 nl80211_fam.attrbuf);
7547 if (IS_ERR(rdev)) {
7548 err = PTR_ERR(rdev);
7549 goto out_err;
7550 }
7551 phy_idx = rdev->wiphy_idx;
7552 rdev = NULL;
7553
7554 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7555 cb->args[1] =
7556 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7557 }
7558
7559 if (cb->args[1]) {
7560 data = nla_data((void *)cb->args[1]);
7561 data_len = nla_len((void *)cb->args[1]);
7562 }
7563
7564 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7565 if (!rdev) {
7566 err = -ENOENT;
7567 goto out_err;
7568 }
7569
7570 if (!rdev->ops->testmode_dump) {
7571 err = -EOPNOTSUPP;
7572 goto out_err;
7573 }
7574
7575 while (1) {
7576 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7577 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7578 NL80211_CMD_TESTMODE);
7579 struct nlattr *tmdata;
7580
7581 if (!hdr)
7582 break;
7583
7584 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7585 genlmsg_cancel(skb, hdr);
7586 break;
7587 }
7588
7589 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7590 if (!tmdata) {
7591 genlmsg_cancel(skb, hdr);
7592 break;
7593 }
7594 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7595 nla_nest_end(skb, tmdata);
7596
7597 if (err == -ENOBUFS || err == -ENOENT) {
7598 genlmsg_cancel(skb, hdr);
7599 break;
7600 } else if (err) {
7601 genlmsg_cancel(skb, hdr);
7602 goto out_err;
7603 }
7604
7605 genlmsg_end(skb, hdr);
7606 }
7607
7608 err = skb->len;
7609 /* see above */
7610 cb->args[0] = phy_idx + 1;
7611 out_err:
7612 rtnl_unlock();
7613 return err;
7614}
7615#endif
7616
7617static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7618{
7619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7620 struct net_device *dev = info->user_ptr[1];
7621 struct cfg80211_connect_params connect;
7622 struct wiphy *wiphy;
7623 struct cfg80211_cached_keys *connkeys = NULL;
7624 int err;
7625
7626 memset(&connect, 0, sizeof(connect));
7627
7628 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7629 return -EINVAL;
7630
7631 if (!info->attrs[NL80211_ATTR_SSID] ||
7632 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7633 return -EINVAL;
7634
7635 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7636 connect.auth_type =
7637 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7638 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7639 NL80211_CMD_CONNECT))
7640 return -EINVAL;
7641 } else
7642 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7643
7644 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7645
7646 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7647 NL80211_MAX_NR_CIPHER_SUITES);
7648 if (err)
7649 return err;
7650
7651 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7652 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7653 return -EOPNOTSUPP;
7654
7655 wiphy = &rdev->wiphy;
7656
7657 connect.bg_scan_period = -1;
7658 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7659 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7660 connect.bg_scan_period =
7661 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7662 }
7663
7664 if (info->attrs[NL80211_ATTR_MAC])
7665 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7666 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7667 connect.bssid_hint =
7668 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7669 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7670 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7671
7672 if (info->attrs[NL80211_ATTR_IE]) {
7673 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7674 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7675 }
7676
7677 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7678 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7679 if (connect.mfp != NL80211_MFP_REQUIRED &&
7680 connect.mfp != NL80211_MFP_NO)
7681 return -EINVAL;
7682 } else {
7683 connect.mfp = NL80211_MFP_NO;
7684 }
7685
7686 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7687 connect.channel = nl80211_get_valid_chan(
7688 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7689 if (!connect.channel)
7690 return -EINVAL;
7691 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7692 connect.channel_hint = nl80211_get_valid_chan(
7693 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7694 if (!connect.channel_hint)
7695 return -EINVAL;
7696 }
7697
7698 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7699 connkeys = nl80211_parse_connkeys(rdev,
7700 info->attrs[NL80211_ATTR_KEYS], NULL);
7701 if (IS_ERR(connkeys))
7702 return PTR_ERR(connkeys);
7703 }
7704
7705 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7706 connect.flags |= ASSOC_REQ_DISABLE_HT;
7707
7708 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7709 memcpy(&connect.ht_capa_mask,
7710 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7711 sizeof(connect.ht_capa_mask));
7712
7713 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7714 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7715 kzfree(connkeys);
7716 return -EINVAL;
7717 }
7718 memcpy(&connect.ht_capa,
7719 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7720 sizeof(connect.ht_capa));
7721 }
7722
7723 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7724 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7725
7726 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7727 memcpy(&connect.vht_capa_mask,
7728 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7729 sizeof(connect.vht_capa_mask));
7730
7731 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7732 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7733 kzfree(connkeys);
7734 return -EINVAL;
7735 }
7736 memcpy(&connect.vht_capa,
7737 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7738 sizeof(connect.vht_capa));
7739 }
7740
7741 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7742 if (!(rdev->wiphy.features &
7743 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7744 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7745 return -EINVAL;
7746 connect.flags |= ASSOC_REQ_USE_RRM;
7747 }
7748
7749 wdev_lock(dev->ieee80211_ptr);
7750 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7751 wdev_unlock(dev->ieee80211_ptr);
7752 if (err)
7753 kzfree(connkeys);
7754 return err;
7755}
7756
7757static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7758{
7759 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7760 struct net_device *dev = info->user_ptr[1];
7761 u16 reason;
7762 int ret;
7763
7764 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7765 reason = WLAN_REASON_DEAUTH_LEAVING;
7766 else
7767 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7768
7769 if (reason == 0)
7770 return -EINVAL;
7771
7772 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7773 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7774 return -EOPNOTSUPP;
7775
7776 wdev_lock(dev->ieee80211_ptr);
7777 ret = cfg80211_disconnect(rdev, dev, reason, true);
7778 wdev_unlock(dev->ieee80211_ptr);
7779 return ret;
7780}
7781
7782static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7783{
7784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7785 struct net *net;
7786 int err;
7787
7788 if (info->attrs[NL80211_ATTR_PID]) {
7789 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7790
7791 net = get_net_ns_by_pid(pid);
7792 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
7793 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
7794
7795 net = get_net_ns_by_fd(fd);
7796 } else {
7797 return -EINVAL;
7798 }
7799
7800 if (IS_ERR(net))
7801 return PTR_ERR(net);
7802
7803 err = 0;
7804
7805 /* check if anything to do */
7806 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7807 err = cfg80211_switch_netns(rdev, net);
7808
7809 put_net(net);
7810 return err;
7811}
7812
7813static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7814{
7815 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7816 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7817 struct cfg80211_pmksa *pmksa) = NULL;
7818 struct net_device *dev = info->user_ptr[1];
7819 struct cfg80211_pmksa pmksa;
7820
7821 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7822
7823 if (!info->attrs[NL80211_ATTR_MAC])
7824 return -EINVAL;
7825
7826 if (!info->attrs[NL80211_ATTR_PMKID])
7827 return -EINVAL;
7828
7829 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7830 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7831
7832 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7833 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7834 return -EOPNOTSUPP;
7835
7836 switch (info->genlhdr->cmd) {
7837 case NL80211_CMD_SET_PMKSA:
7838 rdev_ops = rdev->ops->set_pmksa;
7839 break;
7840 case NL80211_CMD_DEL_PMKSA:
7841 rdev_ops = rdev->ops->del_pmksa;
7842 break;
7843 default:
7844 WARN_ON(1);
7845 break;
7846 }
7847
7848 if (!rdev_ops)
7849 return -EOPNOTSUPP;
7850
7851 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7852}
7853
7854static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7855{
7856 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7857 struct net_device *dev = info->user_ptr[1];
7858
7859 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7860 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7861 return -EOPNOTSUPP;
7862
7863 if (!rdev->ops->flush_pmksa)
7864 return -EOPNOTSUPP;
7865
7866 return rdev_flush_pmksa(rdev, dev);
7867}
7868
7869static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7870{
7871 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7872 struct net_device *dev = info->user_ptr[1];
7873 u8 action_code, dialog_token;
7874 u32 peer_capability = 0;
7875 u16 status_code;
7876 u8 *peer;
7877 bool initiator;
7878
7879 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7880 !rdev->ops->tdls_mgmt)
7881 return -EOPNOTSUPP;
7882
7883 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7884 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7885 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7886 !info->attrs[NL80211_ATTR_IE] ||
7887 !info->attrs[NL80211_ATTR_MAC])
7888 return -EINVAL;
7889
7890 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7891 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7892 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7893 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7894 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7895 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7896 peer_capability =
7897 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7898
7899 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7900 dialog_token, status_code, peer_capability,
7901 initiator,
7902 nla_data(info->attrs[NL80211_ATTR_IE]),
7903 nla_len(info->attrs[NL80211_ATTR_IE]));
7904}
7905
7906static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7907{
7908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7909 struct net_device *dev = info->user_ptr[1];
7910 enum nl80211_tdls_operation operation;
7911 u8 *peer;
7912
7913 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7914 !rdev->ops->tdls_oper)
7915 return -EOPNOTSUPP;
7916
7917 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7918 !info->attrs[NL80211_ATTR_MAC])
7919 return -EINVAL;
7920
7921 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7922 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7923
7924 return rdev_tdls_oper(rdev, dev, peer, operation);
7925}
7926
7927static int nl80211_remain_on_channel(struct sk_buff *skb,
7928 struct genl_info *info)
7929{
7930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7931 struct wireless_dev *wdev = info->user_ptr[1];
7932 struct cfg80211_chan_def chandef;
7933 struct sk_buff *msg;
7934 void *hdr;
7935 u64 cookie;
7936 u32 duration;
7937 int err;
7938
7939 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7940 !info->attrs[NL80211_ATTR_DURATION])
7941 return -EINVAL;
7942
7943 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7944
7945 if (!rdev->ops->remain_on_channel ||
7946 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7947 return -EOPNOTSUPP;
7948
7949 /*
7950 * We should be on that channel for at least a minimum amount of
7951 * time (10ms) but no longer than the driver supports.
7952 */
7953 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7954 duration > rdev->wiphy.max_remain_on_channel_duration)
7955 return -EINVAL;
7956
7957 err = nl80211_parse_chandef(rdev, info, &chandef);
7958 if (err)
7959 return err;
7960
7961 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7962 if (!msg)
7963 return -ENOMEM;
7964
7965 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7966 NL80211_CMD_REMAIN_ON_CHANNEL);
7967 if (!hdr) {
7968 err = -ENOBUFS;
7969 goto free_msg;
7970 }
7971
7972 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7973 duration, &cookie);
7974
7975 if (err)
7976 goto free_msg;
7977
7978 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7979 goto nla_put_failure;
7980
7981 genlmsg_end(msg, hdr);
7982
7983 return genlmsg_reply(msg, info);
7984
7985 nla_put_failure:
7986 err = -ENOBUFS;
7987 free_msg:
7988 nlmsg_free(msg);
7989 return err;
7990}
7991
7992static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7993 struct genl_info *info)
7994{
7995 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7996 struct wireless_dev *wdev = info->user_ptr[1];
7997 u64 cookie;
7998
7999 if (!info->attrs[NL80211_ATTR_COOKIE])
8000 return -EINVAL;
8001
8002 if (!rdev->ops->cancel_remain_on_channel)
8003 return -EOPNOTSUPP;
8004
8005 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8006
8007 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8008}
8009
8010static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8011 u8 *rates, u8 rates_len)
8012{
8013 u8 i;
8014 u32 mask = 0;
8015
8016 for (i = 0; i < rates_len; i++) {
8017 int rate = (rates[i] & 0x7f) * 5;
8018 int ridx;
8019 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8020 struct ieee80211_rate *srate =
8021 &sband->bitrates[ridx];
8022 if (rate == srate->bitrate) {
8023 mask |= 1 << ridx;
8024 break;
8025 }
8026 }
8027 if (ridx == sband->n_bitrates)
8028 return 0; /* rate not found */
8029 }
8030
8031 return mask;
8032}
8033
8034static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8035 u8 *rates, u8 rates_len,
8036 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8037{
8038 u8 i;
8039
8040 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8041
8042 for (i = 0; i < rates_len; i++) {
8043 int ridx, rbit;
8044
8045 ridx = rates[i] / 8;
8046 rbit = BIT(rates[i] % 8);
8047
8048 /* check validity */
8049 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8050 return false;
8051
8052 /* check availability */
8053 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8054 mcs[ridx] |= rbit;
8055 else
8056 return false;
8057 }
8058
8059 return true;
8060}
8061
8062static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8063{
8064 u16 mcs_mask = 0;
8065
8066 switch (vht_mcs_map) {
8067 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8068 break;
8069 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8070 mcs_mask = 0x00FF;
8071 break;
8072 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8073 mcs_mask = 0x01FF;
8074 break;
8075 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8076 mcs_mask = 0x03FF;
8077 break;
8078 default:
8079 break;
8080 }
8081
8082 return mcs_mask;
8083}
8084
8085static void vht_build_mcs_mask(u16 vht_mcs_map,
8086 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8087{
8088 u8 nss;
8089
8090 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8091 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8092 vht_mcs_map >>= 2;
8093 }
8094}
8095
8096static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8097 struct nl80211_txrate_vht *txrate,
8098 u16 mcs[NL80211_VHT_NSS_MAX])
8099{
8100 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8101 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8102 u8 i;
8103
8104 if (!sband->vht_cap.vht_supported)
8105 return false;
8106
8107 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8108
8109 /* Build vht_mcs_mask from VHT capabilities */
8110 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8111
8112 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8113 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8114 mcs[i] = txrate->mcs[i];
8115 else
8116 return false;
8117 }
8118
8119 return true;
8120}
8121
8122static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8123 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8124 .len = NL80211_MAX_SUPP_RATES },
8125 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8126 .len = NL80211_MAX_SUPP_HT_RATES },
8127 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8128 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8129};
8130
8131static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8132 struct genl_info *info)
8133{
8134 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8135 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8136 struct cfg80211_bitrate_mask mask;
8137 int rem, i;
8138 struct net_device *dev = info->user_ptr[1];
8139 struct nlattr *tx_rates;
8140 struct ieee80211_supported_band *sband;
8141 u16 vht_tx_mcs_map;
8142
8143 if (!rdev->ops->set_bitrate_mask)
8144 return -EOPNOTSUPP;
8145
8146 memset(&mask, 0, sizeof(mask));
8147 /* Default to all rates enabled */
8148 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8149 sband = rdev->wiphy.bands[i];
8150
8151 if (!sband)
8152 continue;
8153
8154 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8155 memcpy(mask.control[i].ht_mcs,
8156 sband->ht_cap.mcs.rx_mask,
8157 sizeof(mask.control[i].ht_mcs));
8158
8159 if (!sband->vht_cap.vht_supported)
8160 continue;
8161
8162 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8163 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8164 }
8165
8166 /* if no rates are given set it back to the defaults */
8167 if (!info->attrs[NL80211_ATTR_TX_RATES])
8168 goto out;
8169
8170 /*
8171 * The nested attribute uses enum nl80211_band as the index. This maps
8172 * directly to the enum ieee80211_band values used in cfg80211.
8173 */
8174 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8175 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8176 enum ieee80211_band band = nla_type(tx_rates);
8177 int err;
8178
8179 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8180 return -EINVAL;
8181 sband = rdev->wiphy.bands[band];
8182 if (sband == NULL)
8183 return -EINVAL;
8184 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8185 nla_len(tx_rates), nl80211_txattr_policy);
8186 if (err)
8187 return err;
8188 if (tb[NL80211_TXRATE_LEGACY]) {
8189 mask.control[band].legacy = rateset_to_mask(
8190 sband,
8191 nla_data(tb[NL80211_TXRATE_LEGACY]),
8192 nla_len(tb[NL80211_TXRATE_LEGACY]));
8193 if ((mask.control[band].legacy == 0) &&
8194 nla_len(tb[NL80211_TXRATE_LEGACY]))
8195 return -EINVAL;
8196 }
8197 if (tb[NL80211_TXRATE_HT]) {
8198 if (!ht_rateset_to_mask(
8199 sband,
8200 nla_data(tb[NL80211_TXRATE_HT]),
8201 nla_len(tb[NL80211_TXRATE_HT]),
8202 mask.control[band].ht_mcs))
8203 return -EINVAL;
8204 }
8205 if (tb[NL80211_TXRATE_VHT]) {
8206 if (!vht_set_mcs_mask(
8207 sband,
8208 nla_data(tb[NL80211_TXRATE_VHT]),
8209 mask.control[band].vht_mcs))
8210 return -EINVAL;
8211 }
8212 if (tb[NL80211_TXRATE_GI]) {
8213 mask.control[band].gi =
8214 nla_get_u8(tb[NL80211_TXRATE_GI]);
8215 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8216 return -EINVAL;
8217 }
8218
8219 if (mask.control[band].legacy == 0) {
8220 /* don't allow empty legacy rates if HT or VHT
8221 * are not even supported.
8222 */
8223 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8224 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8225 return -EINVAL;
8226
8227 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8228 if (mask.control[band].ht_mcs[i])
8229 goto out;
8230
8231 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8232 if (mask.control[band].vht_mcs[i])
8233 goto out;
8234
8235 /* legacy and mcs rates may not be both empty */
8236 return -EINVAL;
8237 }
8238 }
8239
8240out:
8241 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8242}
8243
8244static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8245{
8246 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8247 struct wireless_dev *wdev = info->user_ptr[1];
8248 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8249
8250 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8251 return -EINVAL;
8252
8253 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8254 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8255
8256 switch (wdev->iftype) {
8257 case NL80211_IFTYPE_STATION:
8258 case NL80211_IFTYPE_ADHOC:
8259 case NL80211_IFTYPE_P2P_CLIENT:
8260 case NL80211_IFTYPE_AP:
8261 case NL80211_IFTYPE_AP_VLAN:
8262 case NL80211_IFTYPE_MESH_POINT:
8263 case NL80211_IFTYPE_P2P_GO:
8264 case NL80211_IFTYPE_P2P_DEVICE:
8265 break;
8266 default:
8267 return -EOPNOTSUPP;
8268 }
8269
8270 /* not much point in registering if we can't reply */
8271 if (!rdev->ops->mgmt_tx)
8272 return -EOPNOTSUPP;
8273
8274 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8275 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8276 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8277}
8278
8279static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8280{
8281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8282 struct wireless_dev *wdev = info->user_ptr[1];
8283 struct cfg80211_chan_def chandef;
8284 int err;
8285 void *hdr = NULL;
8286 u64 cookie;
8287 struct sk_buff *msg = NULL;
8288 struct cfg80211_mgmt_tx_params params = {
8289 .dont_wait_for_ack =
8290 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8291 };
8292
8293 if (!info->attrs[NL80211_ATTR_FRAME])
8294 return -EINVAL;
8295
8296 if (!rdev->ops->mgmt_tx)
8297 return -EOPNOTSUPP;
8298
8299 switch (wdev->iftype) {
8300 case NL80211_IFTYPE_P2P_DEVICE:
8301 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8302 return -EINVAL;
8303 case NL80211_IFTYPE_STATION:
8304 case NL80211_IFTYPE_ADHOC:
8305 case NL80211_IFTYPE_P2P_CLIENT:
8306 case NL80211_IFTYPE_AP:
8307 case NL80211_IFTYPE_AP_VLAN:
8308 case NL80211_IFTYPE_MESH_POINT:
8309 case NL80211_IFTYPE_P2P_GO:
8310 break;
8311 default:
8312 return -EOPNOTSUPP;
8313 }
8314
8315 if (info->attrs[NL80211_ATTR_DURATION]) {
8316 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8317 return -EINVAL;
8318 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8319
8320 /*
8321 * We should wait on the channel for at least a minimum amount
8322 * of time (10ms) but no longer than the driver supports.
8323 */
8324 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8325 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8326 return -EINVAL;
8327
8328 }
8329
8330 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8331
8332 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8333 return -EINVAL;
8334
8335 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8336
8337 /* get the channel if any has been specified, otherwise pass NULL to
8338 * the driver. The latter will use the current one
8339 */
8340 chandef.chan = NULL;
8341 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8342 err = nl80211_parse_chandef(rdev, info, &chandef);
8343 if (err)
8344 return err;
8345 }
8346
8347 if (!chandef.chan && params.offchan)
8348 return -EINVAL;
8349
8350 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8351 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8352
8353 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8354 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8355 int i;
8356
8357 if (len % sizeof(u16))
8358 return -EINVAL;
8359
8360 params.n_csa_offsets = len / sizeof(u16);
8361 params.csa_offsets =
8362 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8363
8364 /* check that all the offsets fit the frame */
8365 for (i = 0; i < params.n_csa_offsets; i++) {
8366 if (params.csa_offsets[i] >= params.len)
8367 return -EINVAL;
8368 }
8369 }
8370
8371 if (!params.dont_wait_for_ack) {
8372 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8373 if (!msg)
8374 return -ENOMEM;
8375
8376 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8377 NL80211_CMD_FRAME);
8378 if (!hdr) {
8379 err = -ENOBUFS;
8380 goto free_msg;
8381 }
8382 }
8383
8384 params.chan = chandef.chan;
8385 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8386 if (err)
8387 goto free_msg;
8388
8389 if (msg) {
8390 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8391 goto nla_put_failure;
8392
8393 genlmsg_end(msg, hdr);
8394 return genlmsg_reply(msg, info);
8395 }
8396
8397 return 0;
8398
8399 nla_put_failure:
8400 err = -ENOBUFS;
8401 free_msg:
8402 nlmsg_free(msg);
8403 return err;
8404}
8405
8406static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8407{
8408 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8409 struct wireless_dev *wdev = info->user_ptr[1];
8410 u64 cookie;
8411
8412 if (!info->attrs[NL80211_ATTR_COOKIE])
8413 return -EINVAL;
8414
8415 if (!rdev->ops->mgmt_tx_cancel_wait)
8416 return -EOPNOTSUPP;
8417
8418 switch (wdev->iftype) {
8419 case NL80211_IFTYPE_STATION:
8420 case NL80211_IFTYPE_ADHOC:
8421 case NL80211_IFTYPE_P2P_CLIENT:
8422 case NL80211_IFTYPE_AP:
8423 case NL80211_IFTYPE_AP_VLAN:
8424 case NL80211_IFTYPE_P2P_GO:
8425 case NL80211_IFTYPE_P2P_DEVICE:
8426 break;
8427 default:
8428 return -EOPNOTSUPP;
8429 }
8430
8431 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8432
8433 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8434}
8435
8436static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8437{
8438 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8439 struct wireless_dev *wdev;
8440 struct net_device *dev = info->user_ptr[1];
8441 u8 ps_state;
8442 bool state;
8443 int err;
8444
8445 if (!info->attrs[NL80211_ATTR_PS_STATE])
8446 return -EINVAL;
8447
8448 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8449
8450 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8451 return -EINVAL;
8452
8453 wdev = dev->ieee80211_ptr;
8454
8455 if (!rdev->ops->set_power_mgmt)
8456 return -EOPNOTSUPP;
8457
8458 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8459
8460 if (state == wdev->ps)
8461 return 0;
8462
8463 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8464 if (!err)
8465 wdev->ps = state;
8466 return err;
8467}
8468
8469static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8470{
8471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8472 enum nl80211_ps_state ps_state;
8473 struct wireless_dev *wdev;
8474 struct net_device *dev = info->user_ptr[1];
8475 struct sk_buff *msg;
8476 void *hdr;
8477 int err;
8478
8479 wdev = dev->ieee80211_ptr;
8480
8481 if (!rdev->ops->set_power_mgmt)
8482 return -EOPNOTSUPP;
8483
8484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8485 if (!msg)
8486 return -ENOMEM;
8487
8488 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8489 NL80211_CMD_GET_POWER_SAVE);
8490 if (!hdr) {
8491 err = -ENOBUFS;
8492 goto free_msg;
8493 }
8494
8495 if (wdev->ps)
8496 ps_state = NL80211_PS_ENABLED;
8497 else
8498 ps_state = NL80211_PS_DISABLED;
8499
8500 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8501 goto nla_put_failure;
8502
8503 genlmsg_end(msg, hdr);
8504 return genlmsg_reply(msg, info);
8505
8506 nla_put_failure:
8507 err = -ENOBUFS;
8508 free_msg:
8509 nlmsg_free(msg);
8510 return err;
8511}
8512
8513static const struct nla_policy
8514nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8515 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8516 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8517 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8518 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8519 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8520 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8521};
8522
8523static int nl80211_set_cqm_txe(struct genl_info *info,
8524 u32 rate, u32 pkts, u32 intvl)
8525{
8526 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8527 struct net_device *dev = info->user_ptr[1];
8528 struct wireless_dev *wdev = dev->ieee80211_ptr;
8529
8530 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8531 return -EINVAL;
8532
8533 if (!rdev->ops->set_cqm_txe_config)
8534 return -EOPNOTSUPP;
8535
8536 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8537 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8538 return -EOPNOTSUPP;
8539
8540 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8541}
8542
8543static int nl80211_set_cqm_rssi(struct genl_info *info,
8544 s32 threshold, u32 hysteresis)
8545{
8546 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8547 struct net_device *dev = info->user_ptr[1];
8548 struct wireless_dev *wdev = dev->ieee80211_ptr;
8549
8550 if (threshold > 0)
8551 return -EINVAL;
8552
8553 /* disabling - hysteresis should also be zero then */
8554 if (threshold == 0)
8555 hysteresis = 0;
8556
8557 if (!rdev->ops->set_cqm_rssi_config)
8558 return -EOPNOTSUPP;
8559
8560 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8561 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8562 return -EOPNOTSUPP;
8563
8564 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8565}
8566
8567static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8568{
8569 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8570 struct nlattr *cqm;
8571 int err;
8572
8573 cqm = info->attrs[NL80211_ATTR_CQM];
8574 if (!cqm)
8575 return -EINVAL;
8576
8577 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8578 nl80211_attr_cqm_policy);
8579 if (err)
8580 return err;
8581
8582 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8583 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8584 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8585 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8586
8587 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8588 }
8589
8590 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8591 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8592 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8593 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8594 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8595 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8596
8597 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8598 }
8599
8600 return -EINVAL;
8601}
8602
8603static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8604{
8605 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8606 struct net_device *dev = info->user_ptr[1];
8607 struct ocb_setup setup = {};
8608 int err;
8609
8610 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8611 if (err)
8612 return err;
8613
8614 return cfg80211_join_ocb(rdev, dev, &setup);
8615}
8616
8617static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8618{
8619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8620 struct net_device *dev = info->user_ptr[1];
8621
8622 return cfg80211_leave_ocb(rdev, dev);
8623}
8624
8625static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8626{
8627 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8628 struct net_device *dev = info->user_ptr[1];
8629 struct mesh_config cfg;
8630 struct mesh_setup setup;
8631 int err;
8632
8633 /* start with default */
8634 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8635 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8636
8637 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8638 /* and parse parameters if given */
8639 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8640 if (err)
8641 return err;
8642 }
8643
8644 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8645 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8646 return -EINVAL;
8647
8648 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8649 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8650
8651 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8652 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8653 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8654 return -EINVAL;
8655
8656 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8657 setup.beacon_interval =
8658 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8659 if (setup.beacon_interval < 10 ||
8660 setup.beacon_interval > 10000)
8661 return -EINVAL;
8662 }
8663
8664 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8665 setup.dtim_period =
8666 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8667 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8668 return -EINVAL;
8669 }
8670
8671 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8672 /* parse additional setup parameters if given */
8673 err = nl80211_parse_mesh_setup(info, &setup);
8674 if (err)
8675 return err;
8676 }
8677
8678 if (setup.user_mpm)
8679 cfg.auto_open_plinks = false;
8680
8681 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8682 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8683 if (err)
8684 return err;
8685 } else {
8686 /* cfg80211_join_mesh() will sort it out */
8687 setup.chandef.chan = NULL;
8688 }
8689
8690 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8691 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8692 int n_rates =
8693 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8694 struct ieee80211_supported_band *sband;
8695
8696 if (!setup.chandef.chan)
8697 return -EINVAL;
8698
8699 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8700
8701 err = ieee80211_get_ratemask(sband, rates, n_rates,
8702 &setup.basic_rates);
8703 if (err)
8704 return err;
8705 }
8706
8707 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8708}
8709
8710static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8711{
8712 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8713 struct net_device *dev = info->user_ptr[1];
8714
8715 return cfg80211_leave_mesh(rdev, dev);
8716}
8717
8718#ifdef CONFIG_PM
8719static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8720 struct cfg80211_registered_device *rdev)
8721{
8722 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8723 struct nlattr *nl_pats, *nl_pat;
8724 int i, pat_len;
8725
8726 if (!wowlan->n_patterns)
8727 return 0;
8728
8729 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8730 if (!nl_pats)
8731 return -ENOBUFS;
8732
8733 for (i = 0; i < wowlan->n_patterns; i++) {
8734 nl_pat = nla_nest_start(msg, i + 1);
8735 if (!nl_pat)
8736 return -ENOBUFS;
8737 pat_len = wowlan->patterns[i].pattern_len;
8738 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8739 wowlan->patterns[i].mask) ||
8740 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8741 wowlan->patterns[i].pattern) ||
8742 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8743 wowlan->patterns[i].pkt_offset))
8744 return -ENOBUFS;
8745 nla_nest_end(msg, nl_pat);
8746 }
8747 nla_nest_end(msg, nl_pats);
8748
8749 return 0;
8750}
8751
8752static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8753 struct cfg80211_wowlan_tcp *tcp)
8754{
8755 struct nlattr *nl_tcp;
8756
8757 if (!tcp)
8758 return 0;
8759
8760 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8761 if (!nl_tcp)
8762 return -ENOBUFS;
8763
8764 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8765 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8766 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8767 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8768 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8769 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8770 tcp->payload_len, tcp->payload) ||
8771 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8772 tcp->data_interval) ||
8773 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8774 tcp->wake_len, tcp->wake_data) ||
8775 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8776 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8777 return -ENOBUFS;
8778
8779 if (tcp->payload_seq.len &&
8780 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8781 sizeof(tcp->payload_seq), &tcp->payload_seq))
8782 return -ENOBUFS;
8783
8784 if (tcp->payload_tok.len &&
8785 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8786 sizeof(tcp->payload_tok) + tcp->tokens_size,
8787 &tcp->payload_tok))
8788 return -ENOBUFS;
8789
8790 nla_nest_end(msg, nl_tcp);
8791
8792 return 0;
8793}
8794
8795static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8796 struct cfg80211_sched_scan_request *req)
8797{
8798 struct nlattr *nd, *freqs, *matches, *match;
8799 int i;
8800
8801 if (!req)
8802 return 0;
8803
8804 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8805 if (!nd)
8806 return -ENOBUFS;
8807
8808 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8809 return -ENOBUFS;
8810
8811 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8812 if (!freqs)
8813 return -ENOBUFS;
8814
8815 for (i = 0; i < req->n_channels; i++)
8816 nla_put_u32(msg, i, req->channels[i]->center_freq);
8817
8818 nla_nest_end(msg, freqs);
8819
8820 if (req->n_match_sets) {
8821 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8822 for (i = 0; i < req->n_match_sets; i++) {
8823 match = nla_nest_start(msg, i);
8824 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8825 req->match_sets[i].ssid.ssid_len,
8826 req->match_sets[i].ssid.ssid);
8827 nla_nest_end(msg, match);
8828 }
8829 nla_nest_end(msg, matches);
8830 }
8831
8832 nla_nest_end(msg, nd);
8833
8834 return 0;
8835}
8836
8837static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8838{
8839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8840 struct sk_buff *msg;
8841 void *hdr;
8842 u32 size = NLMSG_DEFAULT_SIZE;
8843
8844 if (!rdev->wiphy.wowlan)
8845 return -EOPNOTSUPP;
8846
8847 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8848 /* adjust size to have room for all the data */
8849 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8850 rdev->wiphy.wowlan_config->tcp->payload_len +
8851 rdev->wiphy.wowlan_config->tcp->wake_len +
8852 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8853 }
8854
8855 msg = nlmsg_new(size, GFP_KERNEL);
8856 if (!msg)
8857 return -ENOMEM;
8858
8859 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8860 NL80211_CMD_GET_WOWLAN);
8861 if (!hdr)
8862 goto nla_put_failure;
8863
8864 if (rdev->wiphy.wowlan_config) {
8865 struct nlattr *nl_wowlan;
8866
8867 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8868 if (!nl_wowlan)
8869 goto nla_put_failure;
8870
8871 if ((rdev->wiphy.wowlan_config->any &&
8872 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8873 (rdev->wiphy.wowlan_config->disconnect &&
8874 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8875 (rdev->wiphy.wowlan_config->magic_pkt &&
8876 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8877 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8878 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8879 (rdev->wiphy.wowlan_config->eap_identity_req &&
8880 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8881 (rdev->wiphy.wowlan_config->four_way_handshake &&
8882 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8883 (rdev->wiphy.wowlan_config->rfkill_release &&
8884 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8885 goto nla_put_failure;
8886
8887 if (nl80211_send_wowlan_patterns(msg, rdev))
8888 goto nla_put_failure;
8889
8890 if (nl80211_send_wowlan_tcp(msg,
8891 rdev->wiphy.wowlan_config->tcp))
8892 goto nla_put_failure;
8893
8894 if (nl80211_send_wowlan_nd(
8895 msg,
8896 rdev->wiphy.wowlan_config->nd_config))
8897 goto nla_put_failure;
8898
8899 nla_nest_end(msg, nl_wowlan);
8900 }
8901
8902 genlmsg_end(msg, hdr);
8903 return genlmsg_reply(msg, info);
8904
8905nla_put_failure:
8906 nlmsg_free(msg);
8907 return -ENOBUFS;
8908}
8909
8910static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8911 struct nlattr *attr,
8912 struct cfg80211_wowlan *trig)
8913{
8914 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8915 struct cfg80211_wowlan_tcp *cfg;
8916 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8917 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8918 u32 size;
8919 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8920 int err, port;
8921
8922 if (!rdev->wiphy.wowlan->tcp)
8923 return -EINVAL;
8924
8925 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8926 nla_data(attr), nla_len(attr),
8927 nl80211_wowlan_tcp_policy);
8928 if (err)
8929 return err;
8930
8931 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8932 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8933 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8934 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8935 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8936 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8937 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8938 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8939 return -EINVAL;
8940
8941 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8942 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8943 return -EINVAL;
8944
8945 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8946 rdev->wiphy.wowlan->tcp->data_interval_max ||
8947 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8948 return -EINVAL;
8949
8950 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8951 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8952 return -EINVAL;
8953
8954 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8955 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8956 return -EINVAL;
8957
8958 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8959 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8960
8961 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8962 tokens_size = tokln - sizeof(*tok);
8963
8964 if (!tok->len || tokens_size % tok->len)
8965 return -EINVAL;
8966 if (!rdev->wiphy.wowlan->tcp->tok)
8967 return -EINVAL;
8968 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8969 return -EINVAL;
8970 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8971 return -EINVAL;
8972 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8973 return -EINVAL;
8974 if (tok->offset + tok->len > data_size)
8975 return -EINVAL;
8976 }
8977
8978 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8979 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8980 if (!rdev->wiphy.wowlan->tcp->seq)
8981 return -EINVAL;
8982 if (seq->len == 0 || seq->len > 4)
8983 return -EINVAL;
8984 if (seq->len + seq->offset > data_size)
8985 return -EINVAL;
8986 }
8987
8988 size = sizeof(*cfg);
8989 size += data_size;
8990 size += wake_size + wake_mask_size;
8991 size += tokens_size;
8992
8993 cfg = kzalloc(size, GFP_KERNEL);
8994 if (!cfg)
8995 return -ENOMEM;
8996 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8997 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8998 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8999 ETH_ALEN);
9000 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9001 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9002 else
9003 port = 0;
9004#ifdef CONFIG_INET
9005 /* allocate a socket and port for it and use it */
9006 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9007 IPPROTO_TCP, &cfg->sock, 1);
9008 if (err) {
9009 kfree(cfg);
9010 return err;
9011 }
9012 if (inet_csk_get_port(cfg->sock->sk, port)) {
9013 sock_release(cfg->sock);
9014 kfree(cfg);
9015 return -EADDRINUSE;
9016 }
9017 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9018#else
9019 if (!port) {
9020 kfree(cfg);
9021 return -EINVAL;
9022 }
9023 cfg->src_port = port;
9024#endif
9025
9026 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9027 cfg->payload_len = data_size;
9028 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9029 memcpy((void *)cfg->payload,
9030 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9031 data_size);
9032 if (seq)
9033 cfg->payload_seq = *seq;
9034 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9035 cfg->wake_len = wake_size;
9036 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9037 memcpy((void *)cfg->wake_data,
9038 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9039 wake_size);
9040 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9041 data_size + wake_size;
9042 memcpy((void *)cfg->wake_mask,
9043 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9044 wake_mask_size);
9045 if (tok) {
9046 cfg->tokens_size = tokens_size;
9047 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9048 }
9049
9050 trig->tcp = cfg;
9051
9052 return 0;
9053}
9054
9055static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9056 const struct wiphy_wowlan_support *wowlan,
9057 struct nlattr *attr,
9058 struct cfg80211_wowlan *trig)
9059{
9060 struct nlattr **tb;
9061 int err;
9062
9063 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9064 if (!tb)
9065 return -ENOMEM;
9066
9067 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9068 err = -EOPNOTSUPP;
9069 goto out;
9070 }
9071
9072 err = nla_parse(tb, NL80211_ATTR_MAX,
9073 nla_data(attr), nla_len(attr),
9074 nl80211_policy);
9075 if (err)
9076 goto out;
9077
9078 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9079 err = PTR_ERR_OR_ZERO(trig->nd_config);
9080 if (err)
9081 trig->nd_config = NULL;
9082
9083out:
9084 kfree(tb);
9085 return err;
9086}
9087
9088static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9089{
9090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9091 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9092 struct cfg80211_wowlan new_triggers = {};
9093 struct cfg80211_wowlan *ntrig;
9094 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9095 int err, i;
9096 bool prev_enabled = rdev->wiphy.wowlan_config;
9097
9098 if (!wowlan)
9099 return -EOPNOTSUPP;
9100
9101 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9102 cfg80211_rdev_free_wowlan(rdev);
9103 rdev->wiphy.wowlan_config = NULL;
9104 goto set_wakeup;
9105 }
9106
9107 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9108 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9109 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9110 nl80211_wowlan_policy);
9111 if (err)
9112 return err;
9113
9114 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9115 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9116 return -EINVAL;
9117 new_triggers.any = true;
9118 }
9119
9120 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9121 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9122 return -EINVAL;
9123 new_triggers.disconnect = true;
9124 }
9125
9126 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9127 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9128 return -EINVAL;
9129 new_triggers.magic_pkt = true;
9130 }
9131
9132 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9133 return -EINVAL;
9134
9135 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9136 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9137 return -EINVAL;
9138 new_triggers.gtk_rekey_failure = true;
9139 }
9140
9141 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9142 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9143 return -EINVAL;
9144 new_triggers.eap_identity_req = true;
9145 }
9146
9147 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9148 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9149 return -EINVAL;
9150 new_triggers.four_way_handshake = true;
9151 }
9152
9153 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9154 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9155 return -EINVAL;
9156 new_triggers.rfkill_release = true;
9157 }
9158
9159 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9160 struct nlattr *pat;
9161 int n_patterns = 0;
9162 int rem, pat_len, mask_len, pkt_offset;
9163 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9164
9165 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9166 rem)
9167 n_patterns++;
9168 if (n_patterns > wowlan->n_patterns)
9169 return -EINVAL;
9170
9171 new_triggers.patterns = kcalloc(n_patterns,
9172 sizeof(new_triggers.patterns[0]),
9173 GFP_KERNEL);
9174 if (!new_triggers.patterns)
9175 return -ENOMEM;
9176
9177 new_triggers.n_patterns = n_patterns;
9178 i = 0;
9179
9180 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9181 rem) {
9182 u8 *mask_pat;
9183
9184 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9185 nla_len(pat), NULL);
9186 err = -EINVAL;
9187 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9188 !pat_tb[NL80211_PKTPAT_PATTERN])
9189 goto error;
9190 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9191 mask_len = DIV_ROUND_UP(pat_len, 8);
9192 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9193 goto error;
9194 if (pat_len > wowlan->pattern_max_len ||
9195 pat_len < wowlan->pattern_min_len)
9196 goto error;
9197
9198 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9199 pkt_offset = 0;
9200 else
9201 pkt_offset = nla_get_u32(
9202 pat_tb[NL80211_PKTPAT_OFFSET]);
9203 if (pkt_offset > wowlan->max_pkt_offset)
9204 goto error;
9205 new_triggers.patterns[i].pkt_offset = pkt_offset;
9206
9207 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9208 if (!mask_pat) {
9209 err = -ENOMEM;
9210 goto error;
9211 }
9212 new_triggers.patterns[i].mask = mask_pat;
9213 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9214 mask_len);
9215 mask_pat += mask_len;
9216 new_triggers.patterns[i].pattern = mask_pat;
9217 new_triggers.patterns[i].pattern_len = pat_len;
9218 memcpy(mask_pat,
9219 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9220 pat_len);
9221 i++;
9222 }
9223 }
9224
9225 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9226 err = nl80211_parse_wowlan_tcp(
9227 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9228 &new_triggers);
9229 if (err)
9230 goto error;
9231 }
9232
9233 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9234 err = nl80211_parse_wowlan_nd(
9235 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9236 &new_triggers);
9237 if (err)
9238 goto error;
9239 }
9240
9241 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9242 if (!ntrig) {
9243 err = -ENOMEM;
9244 goto error;
9245 }
9246 cfg80211_rdev_free_wowlan(rdev);
9247 rdev->wiphy.wowlan_config = ntrig;
9248
9249 set_wakeup:
9250 if (rdev->ops->set_wakeup &&
9251 prev_enabled != !!rdev->wiphy.wowlan_config)
9252 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9253
9254 return 0;
9255 error:
9256 for (i = 0; i < new_triggers.n_patterns; i++)
9257 kfree(new_triggers.patterns[i].mask);
9258 kfree(new_triggers.patterns);
9259 if (new_triggers.tcp && new_triggers.tcp->sock)
9260 sock_release(new_triggers.tcp->sock);
9261 kfree(new_triggers.tcp);
9262 return err;
9263}
9264#endif
9265
9266static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9267 struct cfg80211_registered_device *rdev)
9268{
9269 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9270 int i, j, pat_len;
9271 struct cfg80211_coalesce_rules *rule;
9272
9273 if (!rdev->coalesce->n_rules)
9274 return 0;
9275
9276 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9277 if (!nl_rules)
9278 return -ENOBUFS;
9279
9280 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9281 nl_rule = nla_nest_start(msg, i + 1);
9282 if (!nl_rule)
9283 return -ENOBUFS;
9284
9285 rule = &rdev->coalesce->rules[i];
9286 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9287 rule->delay))
9288 return -ENOBUFS;
9289
9290 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9291 rule->condition))
9292 return -ENOBUFS;
9293
9294 nl_pats = nla_nest_start(msg,
9295 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9296 if (!nl_pats)
9297 return -ENOBUFS;
9298
9299 for (j = 0; j < rule->n_patterns; j++) {
9300 nl_pat = nla_nest_start(msg, j + 1);
9301 if (!nl_pat)
9302 return -ENOBUFS;
9303 pat_len = rule->patterns[j].pattern_len;
9304 if (nla_put(msg, NL80211_PKTPAT_MASK,
9305 DIV_ROUND_UP(pat_len, 8),
9306 rule->patterns[j].mask) ||
9307 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9308 rule->patterns[j].pattern) ||
9309 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9310 rule->patterns[j].pkt_offset))
9311 return -ENOBUFS;
9312 nla_nest_end(msg, nl_pat);
9313 }
9314 nla_nest_end(msg, nl_pats);
9315 nla_nest_end(msg, nl_rule);
9316 }
9317 nla_nest_end(msg, nl_rules);
9318
9319 return 0;
9320}
9321
9322static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9323{
9324 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9325 struct sk_buff *msg;
9326 void *hdr;
9327
9328 if (!rdev->wiphy.coalesce)
9329 return -EOPNOTSUPP;
9330
9331 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9332 if (!msg)
9333 return -ENOMEM;
9334
9335 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9336 NL80211_CMD_GET_COALESCE);
9337 if (!hdr)
9338 goto nla_put_failure;
9339
9340 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9341 goto nla_put_failure;
9342
9343 genlmsg_end(msg, hdr);
9344 return genlmsg_reply(msg, info);
9345
9346nla_put_failure:
9347 nlmsg_free(msg);
9348 return -ENOBUFS;
9349}
9350
9351void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9352{
9353 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9354 int i, j;
9355 struct cfg80211_coalesce_rules *rule;
9356
9357 if (!coalesce)
9358 return;
9359
9360 for (i = 0; i < coalesce->n_rules; i++) {
9361 rule = &coalesce->rules[i];
9362 for (j = 0; j < rule->n_patterns; j++)
9363 kfree(rule->patterns[j].mask);
9364 kfree(rule->patterns);
9365 }
9366 kfree(coalesce->rules);
9367 kfree(coalesce);
9368 rdev->coalesce = NULL;
9369}
9370
9371static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9372 struct nlattr *rule,
9373 struct cfg80211_coalesce_rules *new_rule)
9374{
9375 int err, i;
9376 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9377 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9378 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9379 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9380
9381 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9382 nla_len(rule), nl80211_coalesce_policy);
9383 if (err)
9384 return err;
9385
9386 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9387 new_rule->delay =
9388 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9389 if (new_rule->delay > coalesce->max_delay)
9390 return -EINVAL;
9391
9392 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9393 new_rule->condition =
9394 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9395 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9396 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9397 return -EINVAL;
9398
9399 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9400 return -EINVAL;
9401
9402 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9403 rem)
9404 n_patterns++;
9405 if (n_patterns > coalesce->n_patterns)
9406 return -EINVAL;
9407
9408 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9409 GFP_KERNEL);
9410 if (!new_rule->patterns)
9411 return -ENOMEM;
9412
9413 new_rule->n_patterns = n_patterns;
9414 i = 0;
9415
9416 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9417 rem) {
9418 u8 *mask_pat;
9419
9420 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9421 nla_len(pat), NULL);
9422 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9423 !pat_tb[NL80211_PKTPAT_PATTERN])
9424 return -EINVAL;
9425 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9426 mask_len = DIV_ROUND_UP(pat_len, 8);
9427 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9428 return -EINVAL;
9429 if (pat_len > coalesce->pattern_max_len ||
9430 pat_len < coalesce->pattern_min_len)
9431 return -EINVAL;
9432
9433 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9434 pkt_offset = 0;
9435 else
9436 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9437 if (pkt_offset > coalesce->max_pkt_offset)
9438 return -EINVAL;
9439 new_rule->patterns[i].pkt_offset = pkt_offset;
9440
9441 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9442 if (!mask_pat)
9443 return -ENOMEM;
9444
9445 new_rule->patterns[i].mask = mask_pat;
9446 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9447 mask_len);
9448
9449 mask_pat += mask_len;
9450 new_rule->patterns[i].pattern = mask_pat;
9451 new_rule->patterns[i].pattern_len = pat_len;
9452 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9453 pat_len);
9454 i++;
9455 }
9456
9457 return 0;
9458}
9459
9460static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9461{
9462 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9463 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9464 struct cfg80211_coalesce new_coalesce = {};
9465 struct cfg80211_coalesce *n_coalesce;
9466 int err, rem_rule, n_rules = 0, i, j;
9467 struct nlattr *rule;
9468 struct cfg80211_coalesce_rules *tmp_rule;
9469
9470 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9471 return -EOPNOTSUPP;
9472
9473 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9474 cfg80211_rdev_free_coalesce(rdev);
9475 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9476 return 0;
9477 }
9478
9479 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9480 rem_rule)
9481 n_rules++;
9482 if (n_rules > coalesce->n_rules)
9483 return -EINVAL;
9484
9485 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9486 GFP_KERNEL);
9487 if (!new_coalesce.rules)
9488 return -ENOMEM;
9489
9490 new_coalesce.n_rules = n_rules;
9491 i = 0;
9492
9493 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9494 rem_rule) {
9495 err = nl80211_parse_coalesce_rule(rdev, rule,
9496 &new_coalesce.rules[i]);
9497 if (err)
9498 goto error;
9499
9500 i++;
9501 }
9502
9503 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9504 if (err)
9505 goto error;
9506
9507 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9508 if (!n_coalesce) {
9509 err = -ENOMEM;
9510 goto error;
9511 }
9512 cfg80211_rdev_free_coalesce(rdev);
9513 rdev->coalesce = n_coalesce;
9514
9515 return 0;
9516error:
9517 for (i = 0; i < new_coalesce.n_rules; i++) {
9518 tmp_rule = &new_coalesce.rules[i];
9519 for (j = 0; j < tmp_rule->n_patterns; j++)
9520 kfree(tmp_rule->patterns[j].mask);
9521 kfree(tmp_rule->patterns);
9522 }
9523 kfree(new_coalesce.rules);
9524
9525 return err;
9526}
9527
9528static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9529{
9530 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9531 struct net_device *dev = info->user_ptr[1];
9532 struct wireless_dev *wdev = dev->ieee80211_ptr;
9533 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9534 struct cfg80211_gtk_rekey_data rekey_data;
9535 int err;
9536
9537 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9538 return -EINVAL;
9539
9540 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9541 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9542 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9543 nl80211_rekey_policy);
9544 if (err)
9545 return err;
9546
9547 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9548 return -ERANGE;
9549 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9550 return -ERANGE;
9551 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9552 return -ERANGE;
9553
9554 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9555 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9556 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9557
9558 wdev_lock(wdev);
9559 if (!wdev->current_bss) {
9560 err = -ENOTCONN;
9561 goto out;
9562 }
9563
9564 if (!rdev->ops->set_rekey_data) {
9565 err = -EOPNOTSUPP;
9566 goto out;
9567 }
9568
9569 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9570 out:
9571 wdev_unlock(wdev);
9572 return err;
9573}
9574
9575static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9576 struct genl_info *info)
9577{
9578 struct net_device *dev = info->user_ptr[1];
9579 struct wireless_dev *wdev = dev->ieee80211_ptr;
9580
9581 if (wdev->iftype != NL80211_IFTYPE_AP &&
9582 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9583 return -EINVAL;
9584
9585 if (wdev->ap_unexpected_nlportid)
9586 return -EBUSY;
9587
9588 wdev->ap_unexpected_nlportid = info->snd_portid;
9589 return 0;
9590}
9591
9592static int nl80211_probe_client(struct sk_buff *skb,
9593 struct genl_info *info)
9594{
9595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9596 struct net_device *dev = info->user_ptr[1];
9597 struct wireless_dev *wdev = dev->ieee80211_ptr;
9598 struct sk_buff *msg;
9599 void *hdr;
9600 const u8 *addr;
9601 u64 cookie;
9602 int err;
9603
9604 if (wdev->iftype != NL80211_IFTYPE_AP &&
9605 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9606 return -EOPNOTSUPP;
9607
9608 if (!info->attrs[NL80211_ATTR_MAC])
9609 return -EINVAL;
9610
9611 if (!rdev->ops->probe_client)
9612 return -EOPNOTSUPP;
9613
9614 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9615 if (!msg)
9616 return -ENOMEM;
9617
9618 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9619 NL80211_CMD_PROBE_CLIENT);
9620 if (!hdr) {
9621 err = -ENOBUFS;
9622 goto free_msg;
9623 }
9624
9625 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9626
9627 err = rdev_probe_client(rdev, dev, addr, &cookie);
9628 if (err)
9629 goto free_msg;
9630
9631 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9632 goto nla_put_failure;
9633
9634 genlmsg_end(msg, hdr);
9635
9636 return genlmsg_reply(msg, info);
9637
9638 nla_put_failure:
9639 err = -ENOBUFS;
9640 free_msg:
9641 nlmsg_free(msg);
9642 return err;
9643}
9644
9645static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9646{
9647 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9648 struct cfg80211_beacon_registration *reg, *nreg;
9649 int rv;
9650
9651 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9652 return -EOPNOTSUPP;
9653
9654 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9655 if (!nreg)
9656 return -ENOMEM;
9657
9658 /* First, check if already registered. */
9659 spin_lock_bh(&rdev->beacon_registrations_lock);
9660 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9661 if (reg->nlportid == info->snd_portid) {
9662 rv = -EALREADY;
9663 goto out_err;
9664 }
9665 }
9666 /* Add it to the list */
9667 nreg->nlportid = info->snd_portid;
9668 list_add(&nreg->list, &rdev->beacon_registrations);
9669
9670 spin_unlock_bh(&rdev->beacon_registrations_lock);
9671
9672 return 0;
9673out_err:
9674 spin_unlock_bh(&rdev->beacon_registrations_lock);
9675 kfree(nreg);
9676 return rv;
9677}
9678
9679static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9680{
9681 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9682 struct wireless_dev *wdev = info->user_ptr[1];
9683 int err;
9684
9685 if (!rdev->ops->start_p2p_device)
9686 return -EOPNOTSUPP;
9687
9688 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9689 return -EOPNOTSUPP;
9690
9691 if (wdev->p2p_started)
9692 return 0;
9693
9694 if (rfkill_blocked(rdev->rfkill))
9695 return -ERFKILL;
9696
9697 err = rdev_start_p2p_device(rdev, wdev);
9698 if (err)
9699 return err;
9700
9701 wdev->p2p_started = true;
9702 rdev->opencount++;
9703
9704 return 0;
9705}
9706
9707static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9708{
9709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9710 struct wireless_dev *wdev = info->user_ptr[1];
9711
9712 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9713 return -EOPNOTSUPP;
9714
9715 if (!rdev->ops->stop_p2p_device)
9716 return -EOPNOTSUPP;
9717
9718 cfg80211_stop_p2p_device(rdev, wdev);
9719
9720 return 0;
9721}
9722
9723static int nl80211_get_protocol_features(struct sk_buff *skb,
9724 struct genl_info *info)
9725{
9726 void *hdr;
9727 struct sk_buff *msg;
9728
9729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9730 if (!msg)
9731 return -ENOMEM;
9732
9733 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9734 NL80211_CMD_GET_PROTOCOL_FEATURES);
9735 if (!hdr)
9736 goto nla_put_failure;
9737
9738 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9739 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9740 goto nla_put_failure;
9741
9742 genlmsg_end(msg, hdr);
9743 return genlmsg_reply(msg, info);
9744
9745 nla_put_failure:
9746 kfree_skb(msg);
9747 return -ENOBUFS;
9748}
9749
9750static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9751{
9752 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9753 struct cfg80211_update_ft_ies_params ft_params;
9754 struct net_device *dev = info->user_ptr[1];
9755
9756 if (!rdev->ops->update_ft_ies)
9757 return -EOPNOTSUPP;
9758
9759 if (!info->attrs[NL80211_ATTR_MDID] ||
9760 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9761 return -EINVAL;
9762
9763 memset(&ft_params, 0, sizeof(ft_params));
9764 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9765 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9766 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9767
9768 return rdev_update_ft_ies(rdev, dev, &ft_params);
9769}
9770
9771static int nl80211_crit_protocol_start(struct sk_buff *skb,
9772 struct genl_info *info)
9773{
9774 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9775 struct wireless_dev *wdev = info->user_ptr[1];
9776 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9777 u16 duration;
9778 int ret;
9779
9780 if (!rdev->ops->crit_proto_start)
9781 return -EOPNOTSUPP;
9782
9783 if (WARN_ON(!rdev->ops->crit_proto_stop))
9784 return -EINVAL;
9785
9786 if (rdev->crit_proto_nlportid)
9787 return -EBUSY;
9788
9789 /* determine protocol if provided */
9790 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9791 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9792
9793 if (proto >= NUM_NL80211_CRIT_PROTO)
9794 return -EINVAL;
9795
9796 /* timeout must be provided */
9797 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9798 return -EINVAL;
9799
9800 duration =
9801 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9802
9803 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9804 return -ERANGE;
9805
9806 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9807 if (!ret)
9808 rdev->crit_proto_nlportid = info->snd_portid;
9809
9810 return ret;
9811}
9812
9813static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9814 struct genl_info *info)
9815{
9816 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9817 struct wireless_dev *wdev = info->user_ptr[1];
9818
9819 if (!rdev->ops->crit_proto_stop)
9820 return -EOPNOTSUPP;
9821
9822 if (rdev->crit_proto_nlportid) {
9823 rdev->crit_proto_nlportid = 0;
9824 rdev_crit_proto_stop(rdev, wdev);
9825 }
9826 return 0;
9827}
9828
9829static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9830{
9831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9832 struct wireless_dev *wdev =
9833 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9834 int i, err;
9835 u32 vid, subcmd;
9836
9837 if (!rdev->wiphy.vendor_commands)
9838 return -EOPNOTSUPP;
9839
9840 if (IS_ERR(wdev)) {
9841 err = PTR_ERR(wdev);
9842 if (err != -EINVAL)
9843 return err;
9844 wdev = NULL;
9845 } else if (wdev->wiphy != &rdev->wiphy) {
9846 return -EINVAL;
9847 }
9848
9849 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9850 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9851 return -EINVAL;
9852
9853 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9854 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9855 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9856 const struct wiphy_vendor_command *vcmd;
9857 void *data = NULL;
9858 int len = 0;
9859
9860 vcmd = &rdev->wiphy.vendor_commands[i];
9861
9862 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9863 continue;
9864
9865 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9866 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9867 if (!wdev)
9868 return -EINVAL;
9869 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9870 !wdev->netdev)
9871 return -EINVAL;
9872
9873 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9874 if (wdev->netdev &&
9875 !netif_running(wdev->netdev))
9876 return -ENETDOWN;
9877 if (!wdev->netdev && !wdev->p2p_started)
9878 return -ENETDOWN;
9879 }
9880 } else {
9881 wdev = NULL;
9882 }
9883
9884 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9885 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9886 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9887 }
9888
9889 rdev->cur_cmd_info = info;
9890 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9891 data, len);
9892 rdev->cur_cmd_info = NULL;
9893 return err;
9894 }
9895
9896 return -EOPNOTSUPP;
9897}
9898
9899struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9900 enum nl80211_commands cmd,
9901 enum nl80211_attrs attr,
9902 int approxlen)
9903{
9904 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9905
9906 if (WARN_ON(!rdev->cur_cmd_info))
9907 return NULL;
9908
9909 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9910 rdev->cur_cmd_info->snd_portid,
9911 rdev->cur_cmd_info->snd_seq,
9912 cmd, attr, NULL, GFP_KERNEL);
9913}
9914EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9915
9916int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9917{
9918 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9919 void *hdr = ((void **)skb->cb)[1];
9920 struct nlattr *data = ((void **)skb->cb)[2];
9921
9922 /* clear CB data for netlink core to own from now on */
9923 memset(skb->cb, 0, sizeof(skb->cb));
9924
9925 if (WARN_ON(!rdev->cur_cmd_info)) {
9926 kfree_skb(skb);
9927 return -EINVAL;
9928 }
9929
9930 nla_nest_end(skb, data);
9931 genlmsg_end(skb, hdr);
9932 return genlmsg_reply(skb, rdev->cur_cmd_info);
9933}
9934EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9935
9936
9937static int nl80211_set_qos_map(struct sk_buff *skb,
9938 struct genl_info *info)
9939{
9940 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9941 struct cfg80211_qos_map *qos_map = NULL;
9942 struct net_device *dev = info->user_ptr[1];
9943 u8 *pos, len, num_des, des_len, des;
9944 int ret;
9945
9946 if (!rdev->ops->set_qos_map)
9947 return -EOPNOTSUPP;
9948
9949 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9950 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9951 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9952
9953 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9954 len > IEEE80211_QOS_MAP_LEN_MAX)
9955 return -EINVAL;
9956
9957 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9958 if (!qos_map)
9959 return -ENOMEM;
9960
9961 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9962 if (num_des) {
9963 des_len = num_des *
9964 sizeof(struct cfg80211_dscp_exception);
9965 memcpy(qos_map->dscp_exception, pos, des_len);
9966 qos_map->num_des = num_des;
9967 for (des = 0; des < num_des; des++) {
9968 if (qos_map->dscp_exception[des].up > 7) {
9969 kfree(qos_map);
9970 return -EINVAL;
9971 }
9972 }
9973 pos += des_len;
9974 }
9975 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9976 }
9977
9978 wdev_lock(dev->ieee80211_ptr);
9979 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9980 if (!ret)
9981 ret = rdev_set_qos_map(rdev, dev, qos_map);
9982 wdev_unlock(dev->ieee80211_ptr);
9983
9984 kfree(qos_map);
9985 return ret;
9986}
9987
9988static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9989{
9990 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9991 struct net_device *dev = info->user_ptr[1];
9992 struct wireless_dev *wdev = dev->ieee80211_ptr;
9993 const u8 *peer;
9994 u8 tsid, up;
9995 u16 admitted_time = 0;
9996 int err;
9997
9998 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9999 return -EOPNOTSUPP;
10000
10001 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10002 !info->attrs[NL80211_ATTR_USER_PRIO])
10003 return -EINVAL;
10004
10005 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10006 if (tsid >= IEEE80211_NUM_TIDS)
10007 return -EINVAL;
10008
10009 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10010 if (up >= IEEE80211_NUM_UPS)
10011 return -EINVAL;
10012
10013 /* WMM uses TIDs 0-7 even for TSPEC */
10014 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10015 /* TODO: handle 802.11 TSPEC/admission control
10016 * need more attributes for that (e.g. BA session requirement);
10017 * change the WMM adminssion test above to allow both then
10018 */
10019 return -EINVAL;
10020 }
10021
10022 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10023
10024 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10025 admitted_time =
10026 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10027 if (!admitted_time)
10028 return -EINVAL;
10029 }
10030
10031 wdev_lock(wdev);
10032 switch (wdev->iftype) {
10033 case NL80211_IFTYPE_STATION:
10034 case NL80211_IFTYPE_P2P_CLIENT:
10035 if (wdev->current_bss)
10036 break;
10037 err = -ENOTCONN;
10038 goto out;
10039 default:
10040 err = -EOPNOTSUPP;
10041 goto out;
10042 }
10043
10044 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10045
10046 out:
10047 wdev_unlock(wdev);
10048 return err;
10049}
10050
10051static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10052{
10053 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10054 struct net_device *dev = info->user_ptr[1];
10055 struct wireless_dev *wdev = dev->ieee80211_ptr;
10056 const u8 *peer;
10057 u8 tsid;
10058 int err;
10059
10060 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10061 return -EINVAL;
10062
10063 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10064 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10065
10066 wdev_lock(wdev);
10067 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10068 wdev_unlock(wdev);
10069
10070 return err;
10071}
10072
10073static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10074 struct genl_info *info)
10075{
10076 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10077 struct net_device *dev = info->user_ptr[1];
10078 struct wireless_dev *wdev = dev->ieee80211_ptr;
10079 struct cfg80211_chan_def chandef = {};
10080 const u8 *addr;
10081 u8 oper_class;
10082 int err;
10083
10084 if (!rdev->ops->tdls_channel_switch ||
10085 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10086 return -EOPNOTSUPP;
10087
10088 switch (dev->ieee80211_ptr->iftype) {
10089 case NL80211_IFTYPE_STATION:
10090 case NL80211_IFTYPE_P2P_CLIENT:
10091 break;
10092 default:
10093 return -EOPNOTSUPP;
10094 }
10095
10096 if (!info->attrs[NL80211_ATTR_MAC] ||
10097 !info->attrs[NL80211_ATTR_OPER_CLASS])
10098 return -EINVAL;
10099
10100 err = nl80211_parse_chandef(rdev, info, &chandef);
10101 if (err)
10102 return err;
10103
10104 /*
10105 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10106 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10107 * specification is not defined for them.
10108 */
10109 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10110 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10111 chandef.width != NL80211_CHAN_WIDTH_20)
10112 return -EINVAL;
10113
10114 /* we will be active on the TDLS link */
10115 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10116 return -EINVAL;
10117
10118 /* don't allow switching to DFS channels */
10119 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10120 return -EINVAL;
10121
10122 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10123 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10124
10125 wdev_lock(wdev);
10126 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10127 wdev_unlock(wdev);
10128
10129 return err;
10130}
10131
10132static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10133 struct genl_info *info)
10134{
10135 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10136 struct net_device *dev = info->user_ptr[1];
10137 struct wireless_dev *wdev = dev->ieee80211_ptr;
10138 const u8 *addr;
10139
10140 if (!rdev->ops->tdls_channel_switch ||
10141 !rdev->ops->tdls_cancel_channel_switch ||
10142 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10143 return -EOPNOTSUPP;
10144
10145 switch (dev->ieee80211_ptr->iftype) {
10146 case NL80211_IFTYPE_STATION:
10147 case NL80211_IFTYPE_P2P_CLIENT:
10148 break;
10149 default:
10150 return -EOPNOTSUPP;
10151 }
10152
10153 if (!info->attrs[NL80211_ATTR_MAC])
10154 return -EINVAL;
10155
10156 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10157
10158 wdev_lock(wdev);
10159 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10160 wdev_unlock(wdev);
10161
10162 return 0;
10163}
10164
10165#define NL80211_FLAG_NEED_WIPHY 0x01
10166#define NL80211_FLAG_NEED_NETDEV 0x02
10167#define NL80211_FLAG_NEED_RTNL 0x04
10168#define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10169#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10170 NL80211_FLAG_CHECK_NETDEV_UP)
10171#define NL80211_FLAG_NEED_WDEV 0x10
10172/* If a netdev is associated, it must be UP, P2P must be started */
10173#define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10174 NL80211_FLAG_CHECK_NETDEV_UP)
10175#define NL80211_FLAG_CLEAR_SKB 0x20
10176
10177static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10178 struct genl_info *info)
10179{
10180 struct cfg80211_registered_device *rdev;
10181 struct wireless_dev *wdev;
10182 struct net_device *dev;
10183 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10184
10185 if (rtnl)
10186 rtnl_lock();
10187
10188 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10189 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10190 if (IS_ERR(rdev)) {
10191 if (rtnl)
10192 rtnl_unlock();
10193 return PTR_ERR(rdev);
10194 }
10195 info->user_ptr[0] = rdev;
10196 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10197 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10198 ASSERT_RTNL();
10199
10200 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10201 info->attrs);
10202 if (IS_ERR(wdev)) {
10203 if (rtnl)
10204 rtnl_unlock();
10205 return PTR_ERR(wdev);
10206 }
10207
10208 dev = wdev->netdev;
10209 rdev = wiphy_to_rdev(wdev->wiphy);
10210
10211 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10212 if (!dev) {
10213 if (rtnl)
10214 rtnl_unlock();
10215 return -EINVAL;
10216 }
10217
10218 info->user_ptr[1] = dev;
10219 } else {
10220 info->user_ptr[1] = wdev;
10221 }
10222
10223 if (dev) {
10224 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10225 !netif_running(dev)) {
10226 if (rtnl)
10227 rtnl_unlock();
10228 return -ENETDOWN;
10229 }
10230
10231 dev_hold(dev);
10232 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10233 if (!wdev->p2p_started) {
10234 if (rtnl)
10235 rtnl_unlock();
10236 return -ENETDOWN;
10237 }
10238 }
10239
10240 info->user_ptr[0] = rdev;
10241 }
10242
10243 return 0;
10244}
10245
10246static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10247 struct genl_info *info)
10248{
10249 if (info->user_ptr[1]) {
10250 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10251 struct wireless_dev *wdev = info->user_ptr[1];
10252
10253 if (wdev->netdev)
10254 dev_put(wdev->netdev);
10255 } else {
10256 dev_put(info->user_ptr[1]);
10257 }
10258 }
10259
10260 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10261 rtnl_unlock();
10262
10263 /* If needed, clear the netlink message payload from the SKB
10264 * as it might contain key data that shouldn't stick around on
10265 * the heap after the SKB is freed. The netlink message header
10266 * is still needed for further processing, so leave it intact.
10267 */
10268 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10269 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10270
10271 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10272 }
10273}
10274
10275static const struct genl_ops nl80211_ops[] = {
10276 {
10277 .cmd = NL80211_CMD_GET_WIPHY,
10278 .doit = nl80211_get_wiphy,
10279 .dumpit = nl80211_dump_wiphy,
10280 .done = nl80211_dump_wiphy_done,
10281 .policy = nl80211_policy,
10282 /* can be retrieved by unprivileged users */
10283 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10284 NL80211_FLAG_NEED_RTNL,
10285 },
10286 {
10287 .cmd = NL80211_CMD_SET_WIPHY,
10288 .doit = nl80211_set_wiphy,
10289 .policy = nl80211_policy,
10290 .flags = GENL_ADMIN_PERM,
10291 .internal_flags = NL80211_FLAG_NEED_RTNL,
10292 },
10293 {
10294 .cmd = NL80211_CMD_GET_INTERFACE,
10295 .doit = nl80211_get_interface,
10296 .dumpit = nl80211_dump_interface,
10297 .policy = nl80211_policy,
10298 /* can be retrieved by unprivileged users */
10299 .internal_flags = NL80211_FLAG_NEED_WDEV |
10300 NL80211_FLAG_NEED_RTNL,
10301 },
10302 {
10303 .cmd = NL80211_CMD_SET_INTERFACE,
10304 .doit = nl80211_set_interface,
10305 .policy = nl80211_policy,
10306 .flags = GENL_ADMIN_PERM,
10307 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10308 NL80211_FLAG_NEED_RTNL,
10309 },
10310 {
10311 .cmd = NL80211_CMD_NEW_INTERFACE,
10312 .doit = nl80211_new_interface,
10313 .policy = nl80211_policy,
10314 .flags = GENL_ADMIN_PERM,
10315 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10316 NL80211_FLAG_NEED_RTNL,
10317 },
10318 {
10319 .cmd = NL80211_CMD_DEL_INTERFACE,
10320 .doit = nl80211_del_interface,
10321 .policy = nl80211_policy,
10322 .flags = GENL_ADMIN_PERM,
10323 .internal_flags = NL80211_FLAG_NEED_WDEV |
10324 NL80211_FLAG_NEED_RTNL,
10325 },
10326 {
10327 .cmd = NL80211_CMD_GET_KEY,
10328 .doit = nl80211_get_key,
10329 .policy = nl80211_policy,
10330 .flags = GENL_ADMIN_PERM,
10331 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10332 NL80211_FLAG_NEED_RTNL,
10333 },
10334 {
10335 .cmd = NL80211_CMD_SET_KEY,
10336 .doit = nl80211_set_key,
10337 .policy = nl80211_policy,
10338 .flags = GENL_ADMIN_PERM,
10339 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10340 NL80211_FLAG_NEED_RTNL |
10341 NL80211_FLAG_CLEAR_SKB,
10342 },
10343 {
10344 .cmd = NL80211_CMD_NEW_KEY,
10345 .doit = nl80211_new_key,
10346 .policy = nl80211_policy,
10347 .flags = GENL_ADMIN_PERM,
10348 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10349 NL80211_FLAG_NEED_RTNL |
10350 NL80211_FLAG_CLEAR_SKB,
10351 },
10352 {
10353 .cmd = NL80211_CMD_DEL_KEY,
10354 .doit = nl80211_del_key,
10355 .policy = nl80211_policy,
10356 .flags = GENL_ADMIN_PERM,
10357 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10358 NL80211_FLAG_NEED_RTNL,
10359 },
10360 {
10361 .cmd = NL80211_CMD_SET_BEACON,
10362 .policy = nl80211_policy,
10363 .flags = GENL_ADMIN_PERM,
10364 .doit = nl80211_set_beacon,
10365 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10366 NL80211_FLAG_NEED_RTNL,
10367 },
10368 {
10369 .cmd = NL80211_CMD_START_AP,
10370 .policy = nl80211_policy,
10371 .flags = GENL_ADMIN_PERM,
10372 .doit = nl80211_start_ap,
10373 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10374 NL80211_FLAG_NEED_RTNL,
10375 },
10376 {
10377 .cmd = NL80211_CMD_STOP_AP,
10378 .policy = nl80211_policy,
10379 .flags = GENL_ADMIN_PERM,
10380 .doit = nl80211_stop_ap,
10381 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10382 NL80211_FLAG_NEED_RTNL,
10383 },
10384 {
10385 .cmd = NL80211_CMD_GET_STATION,
10386 .doit = nl80211_get_station,
10387 .dumpit = nl80211_dump_station,
10388 .policy = nl80211_policy,
10389 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10390 NL80211_FLAG_NEED_RTNL,
10391 },
10392 {
10393 .cmd = NL80211_CMD_SET_STATION,
10394 .doit = nl80211_set_station,
10395 .policy = nl80211_policy,
10396 .flags = GENL_ADMIN_PERM,
10397 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10398 NL80211_FLAG_NEED_RTNL,
10399 },
10400 {
10401 .cmd = NL80211_CMD_NEW_STATION,
10402 .doit = nl80211_new_station,
10403 .policy = nl80211_policy,
10404 .flags = GENL_ADMIN_PERM,
10405 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10406 NL80211_FLAG_NEED_RTNL,
10407 },
10408 {
10409 .cmd = NL80211_CMD_DEL_STATION,
10410 .doit = nl80211_del_station,
10411 .policy = nl80211_policy,
10412 .flags = GENL_ADMIN_PERM,
10413 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10414 NL80211_FLAG_NEED_RTNL,
10415 },
10416 {
10417 .cmd = NL80211_CMD_GET_MPATH,
10418 .doit = nl80211_get_mpath,
10419 .dumpit = nl80211_dump_mpath,
10420 .policy = nl80211_policy,
10421 .flags = GENL_ADMIN_PERM,
10422 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10423 NL80211_FLAG_NEED_RTNL,
10424 },
10425 {
10426 .cmd = NL80211_CMD_GET_MPP,
10427 .doit = nl80211_get_mpp,
10428 .dumpit = nl80211_dump_mpp,
10429 .policy = nl80211_policy,
10430 .flags = GENL_ADMIN_PERM,
10431 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10432 NL80211_FLAG_NEED_RTNL,
10433 },
10434 {
10435 .cmd = NL80211_CMD_SET_MPATH,
10436 .doit = nl80211_set_mpath,
10437 .policy = nl80211_policy,
10438 .flags = GENL_ADMIN_PERM,
10439 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10440 NL80211_FLAG_NEED_RTNL,
10441 },
10442 {
10443 .cmd = NL80211_CMD_NEW_MPATH,
10444 .doit = nl80211_new_mpath,
10445 .policy = nl80211_policy,
10446 .flags = GENL_ADMIN_PERM,
10447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10448 NL80211_FLAG_NEED_RTNL,
10449 },
10450 {
10451 .cmd = NL80211_CMD_DEL_MPATH,
10452 .doit = nl80211_del_mpath,
10453 .policy = nl80211_policy,
10454 .flags = GENL_ADMIN_PERM,
10455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10456 NL80211_FLAG_NEED_RTNL,
10457 },
10458 {
10459 .cmd = NL80211_CMD_SET_BSS,
10460 .doit = nl80211_set_bss,
10461 .policy = nl80211_policy,
10462 .flags = GENL_ADMIN_PERM,
10463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10464 NL80211_FLAG_NEED_RTNL,
10465 },
10466 {
10467 .cmd = NL80211_CMD_GET_REG,
10468 .doit = nl80211_get_reg_do,
10469 .dumpit = nl80211_get_reg_dump,
10470 .policy = nl80211_policy,
10471 .internal_flags = NL80211_FLAG_NEED_RTNL,
10472 /* can be retrieved by unprivileged users */
10473 },
10474 {
10475 .cmd = NL80211_CMD_SET_REG,
10476 .doit = nl80211_set_reg,
10477 .policy = nl80211_policy,
10478 .flags = GENL_ADMIN_PERM,
10479 .internal_flags = NL80211_FLAG_NEED_RTNL,
10480 },
10481 {
10482 .cmd = NL80211_CMD_REQ_SET_REG,
10483 .doit = nl80211_req_set_reg,
10484 .policy = nl80211_policy,
10485 .flags = GENL_ADMIN_PERM,
10486 },
10487 {
10488 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10489 .doit = nl80211_get_mesh_config,
10490 .policy = nl80211_policy,
10491 /* can be retrieved by unprivileged users */
10492 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10493 NL80211_FLAG_NEED_RTNL,
10494 },
10495 {
10496 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10497 .doit = nl80211_update_mesh_config,
10498 .policy = nl80211_policy,
10499 .flags = GENL_ADMIN_PERM,
10500 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10501 NL80211_FLAG_NEED_RTNL,
10502 },
10503 {
10504 .cmd = NL80211_CMD_TRIGGER_SCAN,
10505 .doit = nl80211_trigger_scan,
10506 .policy = nl80211_policy,
10507 .flags = GENL_ADMIN_PERM,
10508 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10509 NL80211_FLAG_NEED_RTNL,
10510 },
10511 {
10512 .cmd = NL80211_CMD_GET_SCAN,
10513 .policy = nl80211_policy,
10514 .dumpit = nl80211_dump_scan,
10515 },
10516 {
10517 .cmd = NL80211_CMD_START_SCHED_SCAN,
10518 .doit = nl80211_start_sched_scan,
10519 .policy = nl80211_policy,
10520 .flags = GENL_ADMIN_PERM,
10521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10522 NL80211_FLAG_NEED_RTNL,
10523 },
10524 {
10525 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10526 .doit = nl80211_stop_sched_scan,
10527 .policy = nl80211_policy,
10528 .flags = GENL_ADMIN_PERM,
10529 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10530 NL80211_FLAG_NEED_RTNL,
10531 },
10532 {
10533 .cmd = NL80211_CMD_AUTHENTICATE,
10534 .doit = nl80211_authenticate,
10535 .policy = nl80211_policy,
10536 .flags = GENL_ADMIN_PERM,
10537 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10538 NL80211_FLAG_NEED_RTNL |
10539 NL80211_FLAG_CLEAR_SKB,
10540 },
10541 {
10542 .cmd = NL80211_CMD_ASSOCIATE,
10543 .doit = nl80211_associate,
10544 .policy = nl80211_policy,
10545 .flags = GENL_ADMIN_PERM,
10546 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10547 NL80211_FLAG_NEED_RTNL,
10548 },
10549 {
10550 .cmd = NL80211_CMD_DEAUTHENTICATE,
10551 .doit = nl80211_deauthenticate,
10552 .policy = nl80211_policy,
10553 .flags = GENL_ADMIN_PERM,
10554 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10555 NL80211_FLAG_NEED_RTNL,
10556 },
10557 {
10558 .cmd = NL80211_CMD_DISASSOCIATE,
10559 .doit = nl80211_disassociate,
10560 .policy = nl80211_policy,
10561 .flags = GENL_ADMIN_PERM,
10562 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10563 NL80211_FLAG_NEED_RTNL,
10564 },
10565 {
10566 .cmd = NL80211_CMD_JOIN_IBSS,
10567 .doit = nl80211_join_ibss,
10568 .policy = nl80211_policy,
10569 .flags = GENL_ADMIN_PERM,
10570 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10571 NL80211_FLAG_NEED_RTNL,
10572 },
10573 {
10574 .cmd = NL80211_CMD_LEAVE_IBSS,
10575 .doit = nl80211_leave_ibss,
10576 .policy = nl80211_policy,
10577 .flags = GENL_ADMIN_PERM,
10578 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10579 NL80211_FLAG_NEED_RTNL,
10580 },
10581#ifdef CONFIG_NL80211_TESTMODE
10582 {
10583 .cmd = NL80211_CMD_TESTMODE,
10584 .doit = nl80211_testmode_do,
10585 .dumpit = nl80211_testmode_dump,
10586 .policy = nl80211_policy,
10587 .flags = GENL_ADMIN_PERM,
10588 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10589 NL80211_FLAG_NEED_RTNL,
10590 },
10591#endif
10592 {
10593 .cmd = NL80211_CMD_CONNECT,
10594 .doit = nl80211_connect,
10595 .policy = nl80211_policy,
10596 .flags = GENL_ADMIN_PERM,
10597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10598 NL80211_FLAG_NEED_RTNL,
10599 },
10600 {
10601 .cmd = NL80211_CMD_DISCONNECT,
10602 .doit = nl80211_disconnect,
10603 .policy = nl80211_policy,
10604 .flags = GENL_ADMIN_PERM,
10605 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10606 NL80211_FLAG_NEED_RTNL,
10607 },
10608 {
10609 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10610 .doit = nl80211_wiphy_netns,
10611 .policy = nl80211_policy,
10612 .flags = GENL_ADMIN_PERM,
10613 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10614 NL80211_FLAG_NEED_RTNL,
10615 },
10616 {
10617 .cmd = NL80211_CMD_GET_SURVEY,
10618 .policy = nl80211_policy,
10619 .dumpit = nl80211_dump_survey,
10620 },
10621 {
10622 .cmd = NL80211_CMD_SET_PMKSA,
10623 .doit = nl80211_setdel_pmksa,
10624 .policy = nl80211_policy,
10625 .flags = GENL_ADMIN_PERM,
10626 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10627 NL80211_FLAG_NEED_RTNL,
10628 },
10629 {
10630 .cmd = NL80211_CMD_DEL_PMKSA,
10631 .doit = nl80211_setdel_pmksa,
10632 .policy = nl80211_policy,
10633 .flags = GENL_ADMIN_PERM,
10634 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10635 NL80211_FLAG_NEED_RTNL,
10636 },
10637 {
10638 .cmd = NL80211_CMD_FLUSH_PMKSA,
10639 .doit = nl80211_flush_pmksa,
10640 .policy = nl80211_policy,
10641 .flags = GENL_ADMIN_PERM,
10642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10643 NL80211_FLAG_NEED_RTNL,
10644 },
10645 {
10646 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10647 .doit = nl80211_remain_on_channel,
10648 .policy = nl80211_policy,
10649 .flags = GENL_ADMIN_PERM,
10650 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10651 NL80211_FLAG_NEED_RTNL,
10652 },
10653 {
10654 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10655 .doit = nl80211_cancel_remain_on_channel,
10656 .policy = nl80211_policy,
10657 .flags = GENL_ADMIN_PERM,
10658 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10659 NL80211_FLAG_NEED_RTNL,
10660 },
10661 {
10662 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10663 .doit = nl80211_set_tx_bitrate_mask,
10664 .policy = nl80211_policy,
10665 .flags = GENL_ADMIN_PERM,
10666 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10667 NL80211_FLAG_NEED_RTNL,
10668 },
10669 {
10670 .cmd = NL80211_CMD_REGISTER_FRAME,
10671 .doit = nl80211_register_mgmt,
10672 .policy = nl80211_policy,
10673 .flags = GENL_ADMIN_PERM,
10674 .internal_flags = NL80211_FLAG_NEED_WDEV |
10675 NL80211_FLAG_NEED_RTNL,
10676 },
10677 {
10678 .cmd = NL80211_CMD_FRAME,
10679 .doit = nl80211_tx_mgmt,
10680 .policy = nl80211_policy,
10681 .flags = GENL_ADMIN_PERM,
10682 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10683 NL80211_FLAG_NEED_RTNL,
10684 },
10685 {
10686 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10687 .doit = nl80211_tx_mgmt_cancel_wait,
10688 .policy = nl80211_policy,
10689 .flags = GENL_ADMIN_PERM,
10690 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10691 NL80211_FLAG_NEED_RTNL,
10692 },
10693 {
10694 .cmd = NL80211_CMD_SET_POWER_SAVE,
10695 .doit = nl80211_set_power_save,
10696 .policy = nl80211_policy,
10697 .flags = GENL_ADMIN_PERM,
10698 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10699 NL80211_FLAG_NEED_RTNL,
10700 },
10701 {
10702 .cmd = NL80211_CMD_GET_POWER_SAVE,
10703 .doit = nl80211_get_power_save,
10704 .policy = nl80211_policy,
10705 /* can be retrieved by unprivileged users */
10706 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10707 NL80211_FLAG_NEED_RTNL,
10708 },
10709 {
10710 .cmd = NL80211_CMD_SET_CQM,
10711 .doit = nl80211_set_cqm,
10712 .policy = nl80211_policy,
10713 .flags = GENL_ADMIN_PERM,
10714 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10715 NL80211_FLAG_NEED_RTNL,
10716 },
10717 {
10718 .cmd = NL80211_CMD_SET_CHANNEL,
10719 .doit = nl80211_set_channel,
10720 .policy = nl80211_policy,
10721 .flags = GENL_ADMIN_PERM,
10722 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10723 NL80211_FLAG_NEED_RTNL,
10724 },
10725 {
10726 .cmd = NL80211_CMD_SET_WDS_PEER,
10727 .doit = nl80211_set_wds_peer,
10728 .policy = nl80211_policy,
10729 .flags = GENL_ADMIN_PERM,
10730 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10731 NL80211_FLAG_NEED_RTNL,
10732 },
10733 {
10734 .cmd = NL80211_CMD_JOIN_MESH,
10735 .doit = nl80211_join_mesh,
10736 .policy = nl80211_policy,
10737 .flags = GENL_ADMIN_PERM,
10738 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10739 NL80211_FLAG_NEED_RTNL,
10740 },
10741 {
10742 .cmd = NL80211_CMD_LEAVE_MESH,
10743 .doit = nl80211_leave_mesh,
10744 .policy = nl80211_policy,
10745 .flags = GENL_ADMIN_PERM,
10746 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10747 NL80211_FLAG_NEED_RTNL,
10748 },
10749 {
10750 .cmd = NL80211_CMD_JOIN_OCB,
10751 .doit = nl80211_join_ocb,
10752 .policy = nl80211_policy,
10753 .flags = GENL_ADMIN_PERM,
10754 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10755 NL80211_FLAG_NEED_RTNL,
10756 },
10757 {
10758 .cmd = NL80211_CMD_LEAVE_OCB,
10759 .doit = nl80211_leave_ocb,
10760 .policy = nl80211_policy,
10761 .flags = GENL_ADMIN_PERM,
10762 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10763 NL80211_FLAG_NEED_RTNL,
10764 },
10765#ifdef CONFIG_PM
10766 {
10767 .cmd = NL80211_CMD_GET_WOWLAN,
10768 .doit = nl80211_get_wowlan,
10769 .policy = nl80211_policy,
10770 /* can be retrieved by unprivileged users */
10771 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10772 NL80211_FLAG_NEED_RTNL,
10773 },
10774 {
10775 .cmd = NL80211_CMD_SET_WOWLAN,
10776 .doit = nl80211_set_wowlan,
10777 .policy = nl80211_policy,
10778 .flags = GENL_ADMIN_PERM,
10779 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10780 NL80211_FLAG_NEED_RTNL,
10781 },
10782#endif
10783 {
10784 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10785 .doit = nl80211_set_rekey_data,
10786 .policy = nl80211_policy,
10787 .flags = GENL_ADMIN_PERM,
10788 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10789 NL80211_FLAG_NEED_RTNL |
10790 NL80211_FLAG_CLEAR_SKB,
10791 },
10792 {
10793 .cmd = NL80211_CMD_TDLS_MGMT,
10794 .doit = nl80211_tdls_mgmt,
10795 .policy = nl80211_policy,
10796 .flags = GENL_ADMIN_PERM,
10797 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10798 NL80211_FLAG_NEED_RTNL,
10799 },
10800 {
10801 .cmd = NL80211_CMD_TDLS_OPER,
10802 .doit = nl80211_tdls_oper,
10803 .policy = nl80211_policy,
10804 .flags = GENL_ADMIN_PERM,
10805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10806 NL80211_FLAG_NEED_RTNL,
10807 },
10808 {
10809 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10810 .doit = nl80211_register_unexpected_frame,
10811 .policy = nl80211_policy,
10812 .flags = GENL_ADMIN_PERM,
10813 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10814 NL80211_FLAG_NEED_RTNL,
10815 },
10816 {
10817 .cmd = NL80211_CMD_PROBE_CLIENT,
10818 .doit = nl80211_probe_client,
10819 .policy = nl80211_policy,
10820 .flags = GENL_ADMIN_PERM,
10821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10822 NL80211_FLAG_NEED_RTNL,
10823 },
10824 {
10825 .cmd = NL80211_CMD_REGISTER_BEACONS,
10826 .doit = nl80211_register_beacons,
10827 .policy = nl80211_policy,
10828 .flags = GENL_ADMIN_PERM,
10829 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10830 NL80211_FLAG_NEED_RTNL,
10831 },
10832 {
10833 .cmd = NL80211_CMD_SET_NOACK_MAP,
10834 .doit = nl80211_set_noack_map,
10835 .policy = nl80211_policy,
10836 .flags = GENL_ADMIN_PERM,
10837 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10838 NL80211_FLAG_NEED_RTNL,
10839 },
10840 {
10841 .cmd = NL80211_CMD_START_P2P_DEVICE,
10842 .doit = nl80211_start_p2p_device,
10843 .policy = nl80211_policy,
10844 .flags = GENL_ADMIN_PERM,
10845 .internal_flags = NL80211_FLAG_NEED_WDEV |
10846 NL80211_FLAG_NEED_RTNL,
10847 },
10848 {
10849 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10850 .doit = nl80211_stop_p2p_device,
10851 .policy = nl80211_policy,
10852 .flags = GENL_ADMIN_PERM,
10853 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10854 NL80211_FLAG_NEED_RTNL,
10855 },
10856 {
10857 .cmd = NL80211_CMD_SET_MCAST_RATE,
10858 .doit = nl80211_set_mcast_rate,
10859 .policy = nl80211_policy,
10860 .flags = GENL_ADMIN_PERM,
10861 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10862 NL80211_FLAG_NEED_RTNL,
10863 },
10864 {
10865 .cmd = NL80211_CMD_SET_MAC_ACL,
10866 .doit = nl80211_set_mac_acl,
10867 .policy = nl80211_policy,
10868 .flags = GENL_ADMIN_PERM,
10869 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10870 NL80211_FLAG_NEED_RTNL,
10871 },
10872 {
10873 .cmd = NL80211_CMD_RADAR_DETECT,
10874 .doit = nl80211_start_radar_detection,
10875 .policy = nl80211_policy,
10876 .flags = GENL_ADMIN_PERM,
10877 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10878 NL80211_FLAG_NEED_RTNL,
10879 },
10880 {
10881 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10882 .doit = nl80211_get_protocol_features,
10883 .policy = nl80211_policy,
10884 },
10885 {
10886 .cmd = NL80211_CMD_UPDATE_FT_IES,
10887 .doit = nl80211_update_ft_ies,
10888 .policy = nl80211_policy,
10889 .flags = GENL_ADMIN_PERM,
10890 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10891 NL80211_FLAG_NEED_RTNL,
10892 },
10893 {
10894 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10895 .doit = nl80211_crit_protocol_start,
10896 .policy = nl80211_policy,
10897 .flags = GENL_ADMIN_PERM,
10898 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10899 NL80211_FLAG_NEED_RTNL,
10900 },
10901 {
10902 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10903 .doit = nl80211_crit_protocol_stop,
10904 .policy = nl80211_policy,
10905 .flags = GENL_ADMIN_PERM,
10906 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10907 NL80211_FLAG_NEED_RTNL,
10908 },
10909 {
10910 .cmd = NL80211_CMD_GET_COALESCE,
10911 .doit = nl80211_get_coalesce,
10912 .policy = nl80211_policy,
10913 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10914 NL80211_FLAG_NEED_RTNL,
10915 },
10916 {
10917 .cmd = NL80211_CMD_SET_COALESCE,
10918 .doit = nl80211_set_coalesce,
10919 .policy = nl80211_policy,
10920 .flags = GENL_ADMIN_PERM,
10921 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10922 NL80211_FLAG_NEED_RTNL,
10923 },
10924 {
10925 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10926 .doit = nl80211_channel_switch,
10927 .policy = nl80211_policy,
10928 .flags = GENL_ADMIN_PERM,
10929 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10930 NL80211_FLAG_NEED_RTNL,
10931 },
10932 {
10933 .cmd = NL80211_CMD_VENDOR,
10934 .doit = nl80211_vendor_cmd,
10935 .policy = nl80211_policy,
10936 .flags = GENL_ADMIN_PERM,
10937 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10938 NL80211_FLAG_NEED_RTNL,
10939 },
10940 {
10941 .cmd = NL80211_CMD_SET_QOS_MAP,
10942 .doit = nl80211_set_qos_map,
10943 .policy = nl80211_policy,
10944 .flags = GENL_ADMIN_PERM,
10945 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10946 NL80211_FLAG_NEED_RTNL,
10947 },
10948 {
10949 .cmd = NL80211_CMD_ADD_TX_TS,
10950 .doit = nl80211_add_tx_ts,
10951 .policy = nl80211_policy,
10952 .flags = GENL_ADMIN_PERM,
10953 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10954 NL80211_FLAG_NEED_RTNL,
10955 },
10956 {
10957 .cmd = NL80211_CMD_DEL_TX_TS,
10958 .doit = nl80211_del_tx_ts,
10959 .policy = nl80211_policy,
10960 .flags = GENL_ADMIN_PERM,
10961 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10962 NL80211_FLAG_NEED_RTNL,
10963 },
10964 {
10965 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10966 .doit = nl80211_tdls_channel_switch,
10967 .policy = nl80211_policy,
10968 .flags = GENL_ADMIN_PERM,
10969 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10970 NL80211_FLAG_NEED_RTNL,
10971 },
10972 {
10973 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10974 .doit = nl80211_tdls_cancel_channel_switch,
10975 .policy = nl80211_policy,
10976 .flags = GENL_ADMIN_PERM,
10977 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10978 NL80211_FLAG_NEED_RTNL,
10979 },
10980};
10981
10982/* notification functions */
10983
10984void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10985 enum nl80211_commands cmd)
10986{
10987 struct sk_buff *msg;
10988 struct nl80211_dump_wiphy_state state = {};
10989
10990 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10991 cmd != NL80211_CMD_DEL_WIPHY);
10992
10993 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10994 if (!msg)
10995 return;
10996
10997 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10998 nlmsg_free(msg);
10999 return;
11000 }
11001
11002 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11003 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11004}
11005
11006static int nl80211_add_scan_req(struct sk_buff *msg,
11007 struct cfg80211_registered_device *rdev)
11008{
11009 struct cfg80211_scan_request *req = rdev->scan_req;
11010 struct nlattr *nest;
11011 int i;
11012
11013 if (WARN_ON(!req))
11014 return 0;
11015
11016 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11017 if (!nest)
11018 goto nla_put_failure;
11019 for (i = 0; i < req->n_ssids; i++) {
11020 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11021 goto nla_put_failure;
11022 }
11023 nla_nest_end(msg, nest);
11024
11025 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11026 if (!nest)
11027 goto nla_put_failure;
11028 for (i = 0; i < req->n_channels; i++) {
11029 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11030 goto nla_put_failure;
11031 }
11032 nla_nest_end(msg, nest);
11033
11034 if (req->ie &&
11035 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11036 goto nla_put_failure;
11037
11038 if (req->flags &&
11039 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11040 goto nla_put_failure;
11041
11042 return 0;
11043 nla_put_failure:
11044 return -ENOBUFS;
11045}
11046
11047static int nl80211_send_scan_msg(struct sk_buff *msg,
11048 struct cfg80211_registered_device *rdev,
11049 struct wireless_dev *wdev,
11050 u32 portid, u32 seq, int flags,
11051 u32 cmd)
11052{
11053 void *hdr;
11054
11055 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11056 if (!hdr)
11057 return -1;
11058
11059 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11060 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11061 wdev->netdev->ifindex)) ||
11062 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11063 goto nla_put_failure;
11064
11065 /* ignore errors and send incomplete event anyway */
11066 nl80211_add_scan_req(msg, rdev);
11067
11068 genlmsg_end(msg, hdr);
11069 return 0;
11070
11071 nla_put_failure:
11072 genlmsg_cancel(msg, hdr);
11073 return -EMSGSIZE;
11074}
11075
11076static int
11077nl80211_send_sched_scan_msg(struct sk_buff *msg,
11078 struct cfg80211_registered_device *rdev,
11079 struct net_device *netdev,
11080 u32 portid, u32 seq, int flags, u32 cmd)
11081{
11082 void *hdr;
11083
11084 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11085 if (!hdr)
11086 return -1;
11087
11088 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11089 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11090 goto nla_put_failure;
11091
11092 genlmsg_end(msg, hdr);
11093 return 0;
11094
11095 nla_put_failure:
11096 genlmsg_cancel(msg, hdr);
11097 return -EMSGSIZE;
11098}
11099
11100void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11101 struct wireless_dev *wdev)
11102{
11103 struct sk_buff *msg;
11104
11105 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11106 if (!msg)
11107 return;
11108
11109 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11110 NL80211_CMD_TRIGGER_SCAN) < 0) {
11111 nlmsg_free(msg);
11112 return;
11113 }
11114
11115 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11116 NL80211_MCGRP_SCAN, GFP_KERNEL);
11117}
11118
11119struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11120 struct wireless_dev *wdev, bool aborted)
11121{
11122 struct sk_buff *msg;
11123
11124 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11125 if (!msg)
11126 return NULL;
11127
11128 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11129 aborted ? NL80211_CMD_SCAN_ABORTED :
11130 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11131 nlmsg_free(msg);
11132 return NULL;
11133 }
11134
11135 return msg;
11136}
11137
11138void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11139 struct sk_buff *msg)
11140{
11141 if (!msg)
11142 return;
11143
11144 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11145 NL80211_MCGRP_SCAN, GFP_KERNEL);
11146}
11147
11148void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11149 struct net_device *netdev)
11150{
11151 struct sk_buff *msg;
11152
11153 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11154 if (!msg)
11155 return;
11156
11157 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11158 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11159 nlmsg_free(msg);
11160 return;
11161 }
11162
11163 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11164 NL80211_MCGRP_SCAN, GFP_KERNEL);
11165}
11166
11167void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11168 struct net_device *netdev, u32 cmd)
11169{
11170 struct sk_buff *msg;
11171
11172 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11173 if (!msg)
11174 return;
11175
11176 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11177 nlmsg_free(msg);
11178 return;
11179 }
11180
11181 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11182 NL80211_MCGRP_SCAN, GFP_KERNEL);
11183}
11184
11185static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11186 struct regulatory_request *request)
11187{
11188 /* Userspace can always count this one always being set */
11189 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11190 goto nla_put_failure;
11191
11192 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11193 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11194 NL80211_REGDOM_TYPE_WORLD))
11195 goto nla_put_failure;
11196 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11197 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11198 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11199 goto nla_put_failure;
11200 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11201 request->intersect) {
11202 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11203 NL80211_REGDOM_TYPE_INTERSECTION))
11204 goto nla_put_failure;
11205 } else {
11206 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11207 NL80211_REGDOM_TYPE_COUNTRY) ||
11208 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11209 request->alpha2))
11210 goto nla_put_failure;
11211 }
11212
11213 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11214 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11215
11216 if (wiphy &&
11217 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11218 goto nla_put_failure;
11219
11220 if (wiphy &&
11221 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11222 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11223 goto nla_put_failure;
11224 }
11225
11226 return true;
11227
11228nla_put_failure:
11229 return false;
11230}
11231
11232/*
11233 * This can happen on global regulatory changes or device specific settings
11234 * based on custom regulatory domains.
11235 */
11236void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11237 struct regulatory_request *request)
11238{
11239 struct sk_buff *msg;
11240 void *hdr;
11241
11242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11243 if (!msg)
11244 return;
11245
11246 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11247 if (!hdr) {
11248 nlmsg_free(msg);
11249 return;
11250 }
11251
11252 if (nl80211_reg_change_event_fill(msg, request) == false)
11253 goto nla_put_failure;
11254
11255 genlmsg_end(msg, hdr);
11256
11257 rcu_read_lock();
11258 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11259 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11260 rcu_read_unlock();
11261
11262 return;
11263
11264nla_put_failure:
11265 genlmsg_cancel(msg, hdr);
11266 nlmsg_free(msg);
11267}
11268
11269static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11270 struct net_device *netdev,
11271 const u8 *buf, size_t len,
11272 enum nl80211_commands cmd, gfp_t gfp,
11273 int uapsd_queues)
11274{
11275 struct sk_buff *msg;
11276 void *hdr;
11277
11278 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11279 if (!msg)
11280 return;
11281
11282 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11283 if (!hdr) {
11284 nlmsg_free(msg);
11285 return;
11286 }
11287
11288 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11289 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11290 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11291 goto nla_put_failure;
11292
11293 if (uapsd_queues >= 0) {
11294 struct nlattr *nla_wmm =
11295 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11296 if (!nla_wmm)
11297 goto nla_put_failure;
11298
11299 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11300 uapsd_queues))
11301 goto nla_put_failure;
11302
11303 nla_nest_end(msg, nla_wmm);
11304 }
11305
11306 genlmsg_end(msg, hdr);
11307
11308 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11309 NL80211_MCGRP_MLME, gfp);
11310 return;
11311
11312 nla_put_failure:
11313 genlmsg_cancel(msg, hdr);
11314 nlmsg_free(msg);
11315}
11316
11317void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11318 struct net_device *netdev, const u8 *buf,
11319 size_t len, gfp_t gfp)
11320{
11321 nl80211_send_mlme_event(rdev, netdev, buf, len,
11322 NL80211_CMD_AUTHENTICATE, gfp, -1);
11323}
11324
11325void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11326 struct net_device *netdev, const u8 *buf,
11327 size_t len, gfp_t gfp, int uapsd_queues)
11328{
11329 nl80211_send_mlme_event(rdev, netdev, buf, len,
11330 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11331}
11332
11333void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11334 struct net_device *netdev, const u8 *buf,
11335 size_t len, gfp_t gfp)
11336{
11337 nl80211_send_mlme_event(rdev, netdev, buf, len,
11338 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11339}
11340
11341void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11342 struct net_device *netdev, const u8 *buf,
11343 size_t len, gfp_t gfp)
11344{
11345 nl80211_send_mlme_event(rdev, netdev, buf, len,
11346 NL80211_CMD_DISASSOCIATE, gfp, -1);
11347}
11348
11349void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11350 size_t len)
11351{
11352 struct wireless_dev *wdev = dev->ieee80211_ptr;
11353 struct wiphy *wiphy = wdev->wiphy;
11354 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11355 const struct ieee80211_mgmt *mgmt = (void *)buf;
11356 u32 cmd;
11357
11358 if (WARN_ON(len < 2))
11359 return;
11360
11361 if (ieee80211_is_deauth(mgmt->frame_control))
11362 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11363 else
11364 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11365
11366 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11367 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11368}
11369EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11370
11371static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11372 struct net_device *netdev, int cmd,
11373 const u8 *addr, gfp_t gfp)
11374{
11375 struct sk_buff *msg;
11376 void *hdr;
11377
11378 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11379 if (!msg)
11380 return;
11381
11382 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11383 if (!hdr) {
11384 nlmsg_free(msg);
11385 return;
11386 }
11387
11388 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11389 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11390 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11391 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11392 goto nla_put_failure;
11393
11394 genlmsg_end(msg, hdr);
11395
11396 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11397 NL80211_MCGRP_MLME, gfp);
11398 return;
11399
11400 nla_put_failure:
11401 genlmsg_cancel(msg, hdr);
11402 nlmsg_free(msg);
11403}
11404
11405void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11406 struct net_device *netdev, const u8 *addr,
11407 gfp_t gfp)
11408{
11409 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11410 addr, gfp);
11411}
11412
11413void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11414 struct net_device *netdev, const u8 *addr,
11415 gfp_t gfp)
11416{
11417 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11418 addr, gfp);
11419}
11420
11421void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11422 struct net_device *netdev, const u8 *bssid,
11423 const u8 *req_ie, size_t req_ie_len,
11424 const u8 *resp_ie, size_t resp_ie_len,
11425 u16 status, gfp_t gfp)
11426{
11427 struct sk_buff *msg;
11428 void *hdr;
11429
11430 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11431 if (!msg)
11432 return;
11433
11434 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11435 if (!hdr) {
11436 nlmsg_free(msg);
11437 return;
11438 }
11439
11440 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11441 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11442 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11443 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11444 (req_ie &&
11445 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11446 (resp_ie &&
11447 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11448 goto nla_put_failure;
11449
11450 genlmsg_end(msg, hdr);
11451
11452 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11453 NL80211_MCGRP_MLME, gfp);
11454 return;
11455
11456 nla_put_failure:
11457 genlmsg_cancel(msg, hdr);
11458 nlmsg_free(msg);
11459
11460}
11461
11462void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11463 struct net_device *netdev, const u8 *bssid,
11464 const u8 *req_ie, size_t req_ie_len,
11465 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11466{
11467 struct sk_buff *msg;
11468 void *hdr;
11469
11470 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11471 if (!msg)
11472 return;
11473
11474 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11475 if (!hdr) {
11476 nlmsg_free(msg);
11477 return;
11478 }
11479
11480 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11481 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11482 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11483 (req_ie &&
11484 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11485 (resp_ie &&
11486 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11487 goto nla_put_failure;
11488
11489 genlmsg_end(msg, hdr);
11490
11491 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11492 NL80211_MCGRP_MLME, gfp);
11493 return;
11494
11495 nla_put_failure:
11496 genlmsg_cancel(msg, hdr);
11497 nlmsg_free(msg);
11498
11499}
11500
11501void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11502 struct net_device *netdev, u16 reason,
11503 const u8 *ie, size_t ie_len, bool from_ap)
11504{
11505 struct sk_buff *msg;
11506 void *hdr;
11507
11508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11509 if (!msg)
11510 return;
11511
11512 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11513 if (!hdr) {
11514 nlmsg_free(msg);
11515 return;
11516 }
11517
11518 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11519 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11520 (from_ap && reason &&
11521 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11522 (from_ap &&
11523 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11524 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11525 goto nla_put_failure;
11526
11527 genlmsg_end(msg, hdr);
11528
11529 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11530 NL80211_MCGRP_MLME, GFP_KERNEL);
11531 return;
11532
11533 nla_put_failure:
11534 genlmsg_cancel(msg, hdr);
11535 nlmsg_free(msg);
11536
11537}
11538
11539void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11540 struct net_device *netdev, const u8 *bssid,
11541 gfp_t gfp)
11542{
11543 struct sk_buff *msg;
11544 void *hdr;
11545
11546 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11547 if (!msg)
11548 return;
11549
11550 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11551 if (!hdr) {
11552 nlmsg_free(msg);
11553 return;
11554 }
11555
11556 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11557 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11558 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11559 goto nla_put_failure;
11560
11561 genlmsg_end(msg, hdr);
11562
11563 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11564 NL80211_MCGRP_MLME, gfp);
11565 return;
11566
11567 nla_put_failure:
11568 genlmsg_cancel(msg, hdr);
11569 nlmsg_free(msg);
11570}
11571
11572void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11573 const u8* ie, u8 ie_len, gfp_t gfp)
11574{
11575 struct wireless_dev *wdev = dev->ieee80211_ptr;
11576 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11577 struct sk_buff *msg;
11578 void *hdr;
11579
11580 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11581 return;
11582
11583 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11584
11585 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11586 if (!msg)
11587 return;
11588
11589 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11590 if (!hdr) {
11591 nlmsg_free(msg);
11592 return;
11593 }
11594
11595 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11596 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11597 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11598 (ie_len && ie &&
11599 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11600 goto nla_put_failure;
11601
11602 genlmsg_end(msg, hdr);
11603
11604 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11605 NL80211_MCGRP_MLME, gfp);
11606 return;
11607
11608 nla_put_failure:
11609 genlmsg_cancel(msg, hdr);
11610 nlmsg_free(msg);
11611}
11612EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11613
11614void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11615 struct net_device *netdev, const u8 *addr,
11616 enum nl80211_key_type key_type, int key_id,
11617 const u8 *tsc, gfp_t gfp)
11618{
11619 struct sk_buff *msg;
11620 void *hdr;
11621
11622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11623 if (!msg)
11624 return;
11625
11626 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11627 if (!hdr) {
11628 nlmsg_free(msg);
11629 return;
11630 }
11631
11632 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11633 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11634 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11635 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11636 (key_id != -1 &&
11637 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11638 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11639 goto nla_put_failure;
11640
11641 genlmsg_end(msg, hdr);
11642
11643 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11644 NL80211_MCGRP_MLME, gfp);
11645 return;
11646
11647 nla_put_failure:
11648 genlmsg_cancel(msg, hdr);
11649 nlmsg_free(msg);
11650}
11651
11652void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11653 struct ieee80211_channel *channel_before,
11654 struct ieee80211_channel *channel_after)
11655{
11656 struct sk_buff *msg;
11657 void *hdr;
11658 struct nlattr *nl_freq;
11659
11660 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11661 if (!msg)
11662 return;
11663
11664 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11665 if (!hdr) {
11666 nlmsg_free(msg);
11667 return;
11668 }
11669
11670 /*
11671 * Since we are applying the beacon hint to a wiphy we know its
11672 * wiphy_idx is valid
11673 */
11674 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11675 goto nla_put_failure;
11676
11677 /* Before */
11678 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11679 if (!nl_freq)
11680 goto nla_put_failure;
11681 if (nl80211_msg_put_channel(msg, channel_before, false))
11682 goto nla_put_failure;
11683 nla_nest_end(msg, nl_freq);
11684
11685 /* After */
11686 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11687 if (!nl_freq)
11688 goto nla_put_failure;
11689 if (nl80211_msg_put_channel(msg, channel_after, false))
11690 goto nla_put_failure;
11691 nla_nest_end(msg, nl_freq);
11692
11693 genlmsg_end(msg, hdr);
11694
11695 rcu_read_lock();
11696 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11697 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11698 rcu_read_unlock();
11699
11700 return;
11701
11702nla_put_failure:
11703 genlmsg_cancel(msg, hdr);
11704 nlmsg_free(msg);
11705}
11706
11707static void nl80211_send_remain_on_chan_event(
11708 int cmd, struct cfg80211_registered_device *rdev,
11709 struct wireless_dev *wdev, u64 cookie,
11710 struct ieee80211_channel *chan,
11711 unsigned int duration, gfp_t gfp)
11712{
11713 struct sk_buff *msg;
11714 void *hdr;
11715
11716 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11717 if (!msg)
11718 return;
11719
11720 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11721 if (!hdr) {
11722 nlmsg_free(msg);
11723 return;
11724 }
11725
11726 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11727 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11728 wdev->netdev->ifindex)) ||
11729 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11730 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11731 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11732 NL80211_CHAN_NO_HT) ||
11733 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11734 goto nla_put_failure;
11735
11736 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11737 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11738 goto nla_put_failure;
11739
11740 genlmsg_end(msg, hdr);
11741
11742 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11743 NL80211_MCGRP_MLME, gfp);
11744 return;
11745
11746 nla_put_failure:
11747 genlmsg_cancel(msg, hdr);
11748 nlmsg_free(msg);
11749}
11750
11751void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11752 struct ieee80211_channel *chan,
11753 unsigned int duration, gfp_t gfp)
11754{
11755 struct wiphy *wiphy = wdev->wiphy;
11756 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11757
11758 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11759 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11760 rdev, wdev, cookie, chan,
11761 duration, gfp);
11762}
11763EXPORT_SYMBOL(cfg80211_ready_on_channel);
11764
11765void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11766 struct ieee80211_channel *chan,
11767 gfp_t gfp)
11768{
11769 struct wiphy *wiphy = wdev->wiphy;
11770 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11771
11772 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11773 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11774 rdev, wdev, cookie, chan, 0, gfp);
11775}
11776EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11777
11778void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11779 struct station_info *sinfo, gfp_t gfp)
11780{
11781 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11782 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11783 struct sk_buff *msg;
11784
11785 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11786
11787 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11788 if (!msg)
11789 return;
11790
11791 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11792 rdev, dev, mac_addr, sinfo) < 0) {
11793 nlmsg_free(msg);
11794 return;
11795 }
11796
11797 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11798 NL80211_MCGRP_MLME, gfp);
11799}
11800EXPORT_SYMBOL(cfg80211_new_sta);
11801
11802void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11803 struct station_info *sinfo, gfp_t gfp)
11804{
11805 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11806 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11807 struct sk_buff *msg;
11808 struct station_info empty_sinfo = {};
11809
11810 if (!sinfo)
11811 sinfo = &empty_sinfo;
11812
11813 trace_cfg80211_del_sta(dev, mac_addr);
11814
11815 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11816 if (!msg)
11817 return;
11818
11819 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11820 rdev, dev, mac_addr, sinfo) < 0) {
11821 nlmsg_free(msg);
11822 return;
11823 }
11824
11825 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11826 NL80211_MCGRP_MLME, gfp);
11827}
11828EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11829
11830void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11831 enum nl80211_connect_failed_reason reason,
11832 gfp_t gfp)
11833{
11834 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11835 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11836 struct sk_buff *msg;
11837 void *hdr;
11838
11839 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11840 if (!msg)
11841 return;
11842
11843 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11844 if (!hdr) {
11845 nlmsg_free(msg);
11846 return;
11847 }
11848
11849 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11850 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11851 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11852 goto nla_put_failure;
11853
11854 genlmsg_end(msg, hdr);
11855
11856 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11857 NL80211_MCGRP_MLME, gfp);
11858 return;
11859
11860 nla_put_failure:
11861 genlmsg_cancel(msg, hdr);
11862 nlmsg_free(msg);
11863}
11864EXPORT_SYMBOL(cfg80211_conn_failed);
11865
11866static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11867 const u8 *addr, gfp_t gfp)
11868{
11869 struct wireless_dev *wdev = dev->ieee80211_ptr;
11870 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11871 struct sk_buff *msg;
11872 void *hdr;
11873 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11874
11875 if (!nlportid)
11876 return false;
11877
11878 msg = nlmsg_new(100, gfp);
11879 if (!msg)
11880 return true;
11881
11882 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11883 if (!hdr) {
11884 nlmsg_free(msg);
11885 return true;
11886 }
11887
11888 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11889 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11890 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11891 goto nla_put_failure;
11892
11893 genlmsg_end(msg, hdr);
11894 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11895 return true;
11896
11897 nla_put_failure:
11898 genlmsg_cancel(msg, hdr);
11899 nlmsg_free(msg);
11900 return true;
11901}
11902
11903bool cfg80211_rx_spurious_frame(struct net_device *dev,
11904 const u8 *addr, gfp_t gfp)
11905{
11906 struct wireless_dev *wdev = dev->ieee80211_ptr;
11907 bool ret;
11908
11909 trace_cfg80211_rx_spurious_frame(dev, addr);
11910
11911 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11912 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11913 trace_cfg80211_return_bool(false);
11914 return false;
11915 }
11916 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11917 addr, gfp);
11918 trace_cfg80211_return_bool(ret);
11919 return ret;
11920}
11921EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11922
11923bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11924 const u8 *addr, gfp_t gfp)
11925{
11926 struct wireless_dev *wdev = dev->ieee80211_ptr;
11927 bool ret;
11928
11929 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11930
11931 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11932 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11933 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11934 trace_cfg80211_return_bool(false);
11935 return false;
11936 }
11937 ret = __nl80211_unexpected_frame(dev,
11938 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11939 addr, gfp);
11940 trace_cfg80211_return_bool(ret);
11941 return ret;
11942}
11943EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11944
11945int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11946 struct wireless_dev *wdev, u32 nlportid,
11947 int freq, int sig_dbm,
11948 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11949{
11950 struct net_device *netdev = wdev->netdev;
11951 struct sk_buff *msg;
11952 void *hdr;
11953
11954 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11955 if (!msg)
11956 return -ENOMEM;
11957
11958 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11959 if (!hdr) {
11960 nlmsg_free(msg);
11961 return -ENOMEM;
11962 }
11963
11964 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11965 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11966 netdev->ifindex)) ||
11967 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11968 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11969 (sig_dbm &&
11970 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11971 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11972 (flags &&
11973 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11974 goto nla_put_failure;
11975
11976 genlmsg_end(msg, hdr);
11977
11978 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11979
11980 nla_put_failure:
11981 genlmsg_cancel(msg, hdr);
11982 nlmsg_free(msg);
11983 return -ENOBUFS;
11984}
11985
11986void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11987 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11988{
11989 struct wiphy *wiphy = wdev->wiphy;
11990 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11991 struct net_device *netdev = wdev->netdev;
11992 struct sk_buff *msg;
11993 void *hdr;
11994
11995 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11996
11997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11998 if (!msg)
11999 return;
12000
12001 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12002 if (!hdr) {
12003 nlmsg_free(msg);
12004 return;
12005 }
12006
12007 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12008 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12009 netdev->ifindex)) ||
12010 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12011 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12012 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12013 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12014 goto nla_put_failure;
12015
12016 genlmsg_end(msg, hdr);
12017
12018 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12019 NL80211_MCGRP_MLME, gfp);
12020 return;
12021
12022 nla_put_failure:
12023 genlmsg_cancel(msg, hdr);
12024 nlmsg_free(msg);
12025}
12026EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12027
12028static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12029 const char *mac, gfp_t gfp)
12030{
12031 struct wireless_dev *wdev = dev->ieee80211_ptr;
12032 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12033 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12034 void **cb;
12035
12036 if (!msg)
12037 return NULL;
12038
12039 cb = (void **)msg->cb;
12040
12041 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12042 if (!cb[0]) {
12043 nlmsg_free(msg);
12044 return NULL;
12045 }
12046
12047 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12048 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12049 goto nla_put_failure;
12050
12051 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12052 goto nla_put_failure;
12053
12054 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12055 if (!cb[1])
12056 goto nla_put_failure;
12057
12058 cb[2] = rdev;
12059
12060 return msg;
12061 nla_put_failure:
12062 nlmsg_free(msg);
12063 return NULL;
12064}
12065
12066static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12067{
12068 void **cb = (void **)msg->cb;
12069 struct cfg80211_registered_device *rdev = cb[2];
12070
12071 nla_nest_end(msg, cb[1]);
12072 genlmsg_end(msg, cb[0]);
12073
12074 memset(msg->cb, 0, sizeof(msg->cb));
12075
12076 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12077 NL80211_MCGRP_MLME, gfp);
12078}
12079
12080void cfg80211_cqm_rssi_notify(struct net_device *dev,
12081 enum nl80211_cqm_rssi_threshold_event rssi_event,
12082 gfp_t gfp)
12083{
12084 struct sk_buff *msg;
12085
12086 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12087
12088 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12089 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12090 return;
12091
12092 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12093 if (!msg)
12094 return;
12095
12096 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12097 rssi_event))
12098 goto nla_put_failure;
12099
12100 cfg80211_send_cqm(msg, gfp);
12101
12102 return;
12103
12104 nla_put_failure:
12105 nlmsg_free(msg);
12106}
12107EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12108
12109void cfg80211_cqm_txe_notify(struct net_device *dev,
12110 const u8 *peer, u32 num_packets,
12111 u32 rate, u32 intvl, gfp_t gfp)
12112{
12113 struct sk_buff *msg;
12114
12115 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12116 if (!msg)
12117 return;
12118
12119 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12120 goto nla_put_failure;
12121
12122 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12123 goto nla_put_failure;
12124
12125 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12126 goto nla_put_failure;
12127
12128 cfg80211_send_cqm(msg, gfp);
12129 return;
12130
12131 nla_put_failure:
12132 nlmsg_free(msg);
12133}
12134EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12135
12136void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12137 const u8 *peer, u32 num_packets, gfp_t gfp)
12138{
12139 struct sk_buff *msg;
12140
12141 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12142
12143 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12144 if (!msg)
12145 return;
12146
12147 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12148 goto nla_put_failure;
12149
12150 cfg80211_send_cqm(msg, gfp);
12151 return;
12152
12153 nla_put_failure:
12154 nlmsg_free(msg);
12155}
12156EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12157
12158void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12159{
12160 struct sk_buff *msg;
12161
12162 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12163 if (!msg)
12164 return;
12165
12166 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12167 goto nla_put_failure;
12168
12169 cfg80211_send_cqm(msg, gfp);
12170 return;
12171
12172 nla_put_failure:
12173 nlmsg_free(msg);
12174}
12175EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12176
12177static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12178 struct net_device *netdev, const u8 *bssid,
12179 const u8 *replay_ctr, gfp_t gfp)
12180{
12181 struct sk_buff *msg;
12182 struct nlattr *rekey_attr;
12183 void *hdr;
12184
12185 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12186 if (!msg)
12187 return;
12188
12189 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12190 if (!hdr) {
12191 nlmsg_free(msg);
12192 return;
12193 }
12194
12195 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12196 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12197 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12198 goto nla_put_failure;
12199
12200 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12201 if (!rekey_attr)
12202 goto nla_put_failure;
12203
12204 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12205 NL80211_REPLAY_CTR_LEN, replay_ctr))
12206 goto nla_put_failure;
12207
12208 nla_nest_end(msg, rekey_attr);
12209
12210 genlmsg_end(msg, hdr);
12211
12212 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12213 NL80211_MCGRP_MLME, gfp);
12214 return;
12215
12216 nla_put_failure:
12217 genlmsg_cancel(msg, hdr);
12218 nlmsg_free(msg);
12219}
12220
12221void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12222 const u8 *replay_ctr, gfp_t gfp)
12223{
12224 struct wireless_dev *wdev = dev->ieee80211_ptr;
12225 struct wiphy *wiphy = wdev->wiphy;
12226 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12227
12228 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12229 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12230}
12231EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12232
12233static void
12234nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12235 struct net_device *netdev, int index,
12236 const u8 *bssid, bool preauth, gfp_t gfp)
12237{
12238 struct sk_buff *msg;
12239 struct nlattr *attr;
12240 void *hdr;
12241
12242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12243 if (!msg)
12244 return;
12245
12246 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12247 if (!hdr) {
12248 nlmsg_free(msg);
12249 return;
12250 }
12251
12252 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12253 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12254 goto nla_put_failure;
12255
12256 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12257 if (!attr)
12258 goto nla_put_failure;
12259
12260 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12261 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12262 (preauth &&
12263 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12264 goto nla_put_failure;
12265
12266 nla_nest_end(msg, attr);
12267
12268 genlmsg_end(msg, hdr);
12269
12270 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12271 NL80211_MCGRP_MLME, gfp);
12272 return;
12273
12274 nla_put_failure:
12275 genlmsg_cancel(msg, hdr);
12276 nlmsg_free(msg);
12277}
12278
12279void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12280 const u8 *bssid, bool preauth, gfp_t gfp)
12281{
12282 struct wireless_dev *wdev = dev->ieee80211_ptr;
12283 struct wiphy *wiphy = wdev->wiphy;
12284 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12285
12286 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12287 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12288}
12289EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12290
12291static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12292 struct net_device *netdev,
12293 struct cfg80211_chan_def *chandef,
12294 gfp_t gfp,
12295 enum nl80211_commands notif,
12296 u8 count)
12297{
12298 struct sk_buff *msg;
12299 void *hdr;
12300
12301 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12302 if (!msg)
12303 return;
12304
12305 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12306 if (!hdr) {
12307 nlmsg_free(msg);
12308 return;
12309 }
12310
12311 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12312 goto nla_put_failure;
12313
12314 if (nl80211_send_chandef(msg, chandef))
12315 goto nla_put_failure;
12316
12317 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12318 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12319 goto nla_put_failure;
12320
12321 genlmsg_end(msg, hdr);
12322
12323 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12324 NL80211_MCGRP_MLME, gfp);
12325 return;
12326
12327 nla_put_failure:
12328 genlmsg_cancel(msg, hdr);
12329 nlmsg_free(msg);
12330}
12331
12332void cfg80211_ch_switch_notify(struct net_device *dev,
12333 struct cfg80211_chan_def *chandef)
12334{
12335 struct wireless_dev *wdev = dev->ieee80211_ptr;
12336 struct wiphy *wiphy = wdev->wiphy;
12337 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12338
12339 ASSERT_WDEV_LOCK(wdev);
12340
12341 trace_cfg80211_ch_switch_notify(dev, chandef);
12342
12343 wdev->chandef = *chandef;
12344 wdev->preset_chandef = *chandef;
12345 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12346 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12347}
12348EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12349
12350void cfg80211_ch_switch_started_notify(struct net_device *dev,
12351 struct cfg80211_chan_def *chandef,
12352 u8 count)
12353{
12354 struct wireless_dev *wdev = dev->ieee80211_ptr;
12355 struct wiphy *wiphy = wdev->wiphy;
12356 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12357
12358 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12359
12360 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12361 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12362}
12363EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12364
12365void
12366nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12367 const struct cfg80211_chan_def *chandef,
12368 enum nl80211_radar_event event,
12369 struct net_device *netdev, gfp_t gfp)
12370{
12371 struct sk_buff *msg;
12372 void *hdr;
12373
12374 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12375 if (!msg)
12376 return;
12377
12378 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12379 if (!hdr) {
12380 nlmsg_free(msg);
12381 return;
12382 }
12383
12384 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12385 goto nla_put_failure;
12386
12387 /* NOP and radar events don't need a netdev parameter */
12388 if (netdev) {
12389 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12390
12391 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12392 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12393 goto nla_put_failure;
12394 }
12395
12396 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12397 goto nla_put_failure;
12398
12399 if (nl80211_send_chandef(msg, chandef))
12400 goto nla_put_failure;
12401
12402 genlmsg_end(msg, hdr);
12403
12404 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12405 NL80211_MCGRP_MLME, gfp);
12406 return;
12407
12408 nla_put_failure:
12409 genlmsg_cancel(msg, hdr);
12410 nlmsg_free(msg);
12411}
12412
12413void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12414 u64 cookie, bool acked, gfp_t gfp)
12415{
12416 struct wireless_dev *wdev = dev->ieee80211_ptr;
12417 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12418 struct sk_buff *msg;
12419 void *hdr;
12420
12421 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12422
12423 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12424
12425 if (!msg)
12426 return;
12427
12428 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12429 if (!hdr) {
12430 nlmsg_free(msg);
12431 return;
12432 }
12433
12434 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12435 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12436 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12437 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12438 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12439 goto nla_put_failure;
12440
12441 genlmsg_end(msg, hdr);
12442
12443 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12444 NL80211_MCGRP_MLME, gfp);
12445 return;
12446
12447 nla_put_failure:
12448 genlmsg_cancel(msg, hdr);
12449 nlmsg_free(msg);
12450}
12451EXPORT_SYMBOL(cfg80211_probe_status);
12452
12453void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12454 const u8 *frame, size_t len,
12455 int freq, int sig_dbm)
12456{
12457 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12458 struct sk_buff *msg;
12459 void *hdr;
12460 struct cfg80211_beacon_registration *reg;
12461
12462 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12463
12464 spin_lock_bh(&rdev->beacon_registrations_lock);
12465 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12466 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12467 if (!msg) {
12468 spin_unlock_bh(&rdev->beacon_registrations_lock);
12469 return;
12470 }
12471
12472 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12473 if (!hdr)
12474 goto nla_put_failure;
12475
12476 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12477 (freq &&
12478 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12479 (sig_dbm &&
12480 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12481 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12482 goto nla_put_failure;
12483
12484 genlmsg_end(msg, hdr);
12485
12486 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12487 }
12488 spin_unlock_bh(&rdev->beacon_registrations_lock);
12489 return;
12490
12491 nla_put_failure:
12492 spin_unlock_bh(&rdev->beacon_registrations_lock);
12493 if (hdr)
12494 genlmsg_cancel(msg, hdr);
12495 nlmsg_free(msg);
12496}
12497EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12498
12499#ifdef CONFIG_PM
12500static int cfg80211_net_detect_results(struct sk_buff *msg,
12501 struct cfg80211_wowlan_wakeup *wakeup)
12502{
12503 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12504 struct nlattr *nl_results, *nl_match, *nl_freqs;
12505 int i, j;
12506
12507 nl_results = nla_nest_start(
12508 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12509 if (!nl_results)
12510 return -EMSGSIZE;
12511
12512 for (i = 0; i < nd->n_matches; i++) {
12513 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12514
12515 nl_match = nla_nest_start(msg, i);
12516 if (!nl_match)
12517 break;
12518
12519 /* The SSID attribute is optional in nl80211, but for
12520 * simplicity reasons it's always present in the
12521 * cfg80211 structure. If a driver can't pass the
12522 * SSID, that needs to be changed. A zero length SSID
12523 * is still a valid SSID (wildcard), so it cannot be
12524 * used for this purpose.
12525 */
12526 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12527 match->ssid.ssid)) {
12528 nla_nest_cancel(msg, nl_match);
12529 goto out;
12530 }
12531
12532 if (match->n_channels) {
12533 nl_freqs = nla_nest_start(
12534 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12535 if (!nl_freqs) {
12536 nla_nest_cancel(msg, nl_match);
12537 goto out;
12538 }
12539
12540 for (j = 0; j < match->n_channels; j++) {
12541 if (nla_put_u32(msg, j, match->channels[j])) {
12542 nla_nest_cancel(msg, nl_freqs);
12543 nla_nest_cancel(msg, nl_match);
12544 goto out;
12545 }
12546 }
12547
12548 nla_nest_end(msg, nl_freqs);
12549 }
12550
12551 nla_nest_end(msg, nl_match);
12552 }
12553
12554out:
12555 nla_nest_end(msg, nl_results);
12556 return 0;
12557}
12558
12559void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12560 struct cfg80211_wowlan_wakeup *wakeup,
12561 gfp_t gfp)
12562{
12563 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12564 struct sk_buff *msg;
12565 void *hdr;
12566 int size = 200;
12567
12568 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12569
12570 if (wakeup)
12571 size += wakeup->packet_present_len;
12572
12573 msg = nlmsg_new(size, gfp);
12574 if (!msg)
12575 return;
12576
12577 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12578 if (!hdr)
12579 goto free_msg;
12580
12581 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12582 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12583 goto free_msg;
12584
12585 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12586 wdev->netdev->ifindex))
12587 goto free_msg;
12588
12589 if (wakeup) {
12590 struct nlattr *reasons;
12591
12592 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12593 if (!reasons)
12594 goto free_msg;
12595
12596 if (wakeup->disconnect &&
12597 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12598 goto free_msg;
12599 if (wakeup->magic_pkt &&
12600 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12601 goto free_msg;
12602 if (wakeup->gtk_rekey_failure &&
12603 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12604 goto free_msg;
12605 if (wakeup->eap_identity_req &&
12606 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12607 goto free_msg;
12608 if (wakeup->four_way_handshake &&
12609 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12610 goto free_msg;
12611 if (wakeup->rfkill_release &&
12612 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12613 goto free_msg;
12614
12615 if (wakeup->pattern_idx >= 0 &&
12616 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12617 wakeup->pattern_idx))
12618 goto free_msg;
12619
12620 if (wakeup->tcp_match &&
12621 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12622 goto free_msg;
12623
12624 if (wakeup->tcp_connlost &&
12625 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12626 goto free_msg;
12627
12628 if (wakeup->tcp_nomoretokens &&
12629 nla_put_flag(msg,
12630 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12631 goto free_msg;
12632
12633 if (wakeup->packet) {
12634 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12635 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12636
12637 if (!wakeup->packet_80211) {
12638 pkt_attr =
12639 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12640 len_attr =
12641 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12642 }
12643
12644 if (wakeup->packet_len &&
12645 nla_put_u32(msg, len_attr, wakeup->packet_len))
12646 goto free_msg;
12647
12648 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12649 wakeup->packet))
12650 goto free_msg;
12651 }
12652
12653 if (wakeup->net_detect &&
12654 cfg80211_net_detect_results(msg, wakeup))
12655 goto free_msg;
12656
12657 nla_nest_end(msg, reasons);
12658 }
12659
12660 genlmsg_end(msg, hdr);
12661
12662 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12663 NL80211_MCGRP_MLME, gfp);
12664 return;
12665
12666 free_msg:
12667 nlmsg_free(msg);
12668}
12669EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12670#endif
12671
12672void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12673 enum nl80211_tdls_operation oper,
12674 u16 reason_code, gfp_t gfp)
12675{
12676 struct wireless_dev *wdev = dev->ieee80211_ptr;
12677 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12678 struct sk_buff *msg;
12679 void *hdr;
12680
12681 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12682 reason_code);
12683
12684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12685 if (!msg)
12686 return;
12687
12688 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12689 if (!hdr) {
12690 nlmsg_free(msg);
12691 return;
12692 }
12693
12694 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12695 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12696 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12697 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12698 (reason_code > 0 &&
12699 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12700 goto nla_put_failure;
12701
12702 genlmsg_end(msg, hdr);
12703
12704 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12705 NL80211_MCGRP_MLME, gfp);
12706 return;
12707
12708 nla_put_failure:
12709 genlmsg_cancel(msg, hdr);
12710 nlmsg_free(msg);
12711}
12712EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12713
12714static int nl80211_netlink_notify(struct notifier_block * nb,
12715 unsigned long state,
12716 void *_notify)
12717{
12718 struct netlink_notify *notify = _notify;
12719 struct cfg80211_registered_device *rdev;
12720 struct wireless_dev *wdev;
12721 struct cfg80211_beacon_registration *reg, *tmp;
12722
12723 if (state != NETLINK_URELEASE)
12724 return NOTIFY_DONE;
12725
12726 rcu_read_lock();
12727
12728 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12729 bool schedule_destroy_work = false;
12730 bool schedule_scan_stop = false;
12731 struct cfg80211_sched_scan_request *sched_scan_req =
12732 rcu_dereference(rdev->sched_scan_req);
12733
12734 if (sched_scan_req && notify->portid &&
12735 sched_scan_req->owner_nlportid == notify->portid)
12736 schedule_scan_stop = true;
12737
12738 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12739 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12740
12741 if (wdev->owner_nlportid == notify->portid)
12742 schedule_destroy_work = true;
12743 }
12744
12745 spin_lock_bh(&rdev->beacon_registrations_lock);
12746 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12747 list) {
12748 if (reg->nlportid == notify->portid) {
12749 list_del(&reg->list);
12750 kfree(reg);
12751 break;
12752 }
12753 }
12754 spin_unlock_bh(&rdev->beacon_registrations_lock);
12755
12756 if (schedule_destroy_work) {
12757 struct cfg80211_iface_destroy *destroy;
12758
12759 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12760 if (destroy) {
12761 destroy->nlportid = notify->portid;
12762 spin_lock(&rdev->destroy_list_lock);
12763 list_add(&destroy->list, &rdev->destroy_list);
12764 spin_unlock(&rdev->destroy_list_lock);
12765 schedule_work(&rdev->destroy_work);
12766 }
12767 } else if (schedule_scan_stop) {
12768 sched_scan_req->owner_nlportid = 0;
12769
12770 if (rdev->ops->sched_scan_stop &&
12771 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12772 schedule_work(&rdev->sched_scan_stop_wk);
12773 }
12774 }
12775
12776 rcu_read_unlock();
12777
12778 return NOTIFY_OK;
12779}
12780
12781static struct notifier_block nl80211_netlink_notifier = {
12782 .notifier_call = nl80211_netlink_notify,
12783};
12784
12785void cfg80211_ft_event(struct net_device *netdev,
12786 struct cfg80211_ft_event_params *ft_event)
12787{
12788 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12789 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12790 struct sk_buff *msg;
12791 void *hdr;
12792
12793 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12794
12795 if (!ft_event->target_ap)
12796 return;
12797
12798 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12799 if (!msg)
12800 return;
12801
12802 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12803 if (!hdr)
12804 goto out;
12805
12806 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12807 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12808 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12809 goto out;
12810
12811 if (ft_event->ies &&
12812 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12813 goto out;
12814 if (ft_event->ric_ies &&
12815 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12816 ft_event->ric_ies))
12817 goto out;
12818
12819 genlmsg_end(msg, hdr);
12820
12821 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12822 NL80211_MCGRP_MLME, GFP_KERNEL);
12823 return;
12824 out:
12825 nlmsg_free(msg);
12826}
12827EXPORT_SYMBOL(cfg80211_ft_event);
12828
12829void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12830{
12831 struct cfg80211_registered_device *rdev;
12832 struct sk_buff *msg;
12833 void *hdr;
12834 u32 nlportid;
12835
12836 rdev = wiphy_to_rdev(wdev->wiphy);
12837 if (!rdev->crit_proto_nlportid)
12838 return;
12839
12840 nlportid = rdev->crit_proto_nlportid;
12841 rdev->crit_proto_nlportid = 0;
12842
12843 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12844 if (!msg)
12845 return;
12846
12847 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12848 if (!hdr)
12849 goto nla_put_failure;
12850
12851 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12852 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12853 goto nla_put_failure;
12854
12855 genlmsg_end(msg, hdr);
12856
12857 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12858 return;
12859
12860 nla_put_failure:
12861 if (hdr)
12862 genlmsg_cancel(msg, hdr);
12863 nlmsg_free(msg);
12864
12865}
12866EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12867
12868void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12869{
12870 struct wiphy *wiphy = wdev->wiphy;
12871 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12872 struct sk_buff *msg;
12873 void *hdr;
12874
12875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12876 if (!msg)
12877 return;
12878
12879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12880 if (!hdr)
12881 goto out;
12882
12883 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12884 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12885 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12886 goto out;
12887
12888 genlmsg_end(msg, hdr);
12889
12890 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12891 NL80211_MCGRP_MLME, GFP_KERNEL);
12892 return;
12893 out:
12894 nlmsg_free(msg);
12895}
12896
12897/* initialisation/exit functions */
12898
12899int nl80211_init(void)
12900{
12901 int err;
12902
12903 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12904 nl80211_mcgrps);
12905 if (err)
12906 return err;
12907
12908 err = netlink_register_notifier(&nl80211_netlink_notifier);
12909 if (err)
12910 goto err_out;
12911
12912 return 0;
12913 err_out:
12914 genl_unregister_family(&nl80211_fam);
12915 return err;
12916}
12917
12918void nl80211_exit(void)
12919{
12920 netlink_unregister_notifier(&nl80211_netlink_notifier);
12921 genl_unregister_family(&nl80211_fam);
12922}
Linux kernel - Deliverables
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