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Merge branch 'fix/rt5645' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
400 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
401 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
402 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
403 };
404
405 /* policy for the key attributes */
406 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
407 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
408 [NL80211_KEY_IDX] = { .type = NLA_U8 },
409 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
410 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
411 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
412 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
413 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
414 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
415 };
416
417 /* policy for the key default flags */
418 static const struct nla_policy
419 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
420 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
421 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
422 };
423
424 /* policy for WoWLAN attributes */
425 static const struct nla_policy
426 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
427 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
431 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
433 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
435 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
436 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
437 };
438
439 static const struct nla_policy
440 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
441 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
442 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
443 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
444 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
445 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
447 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
448 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
449 },
450 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
451 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
452 },
453 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
454 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
455 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
456 };
457
458 /* policy for coalesce rule attributes */
459 static const struct nla_policy
460 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
461 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
462 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
463 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
464 };
465
466 /* policy for GTK rekey offload attributes */
467 static const struct nla_policy
468 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
469 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
470 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
471 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
472 };
473
474 static const struct nla_policy
475 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
476 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
477 .len = IEEE80211_MAX_SSID_LEN },
478 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
479 };
480
481 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
482 struct netlink_callback *cb,
483 struct cfg80211_registered_device **rdev,
484 struct wireless_dev **wdev)
485 {
486 int err;
487
488 rtnl_lock();
489
490 if (!cb->args[0]) {
491 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
492 nl80211_fam.attrbuf, nl80211_fam.maxattr,
493 nl80211_policy);
494 if (err)
495 goto out_unlock;
496
497 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
498 nl80211_fam.attrbuf);
499 if (IS_ERR(*wdev)) {
500 err = PTR_ERR(*wdev);
501 goto out_unlock;
502 }
503 *rdev = wiphy_to_rdev((*wdev)->wiphy);
504 /* 0 is the first index - add 1 to parse only once */
505 cb->args[0] = (*rdev)->wiphy_idx + 1;
506 cb->args[1] = (*wdev)->identifier;
507 } else {
508 /* subtract the 1 again here */
509 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
510 struct wireless_dev *tmp;
511
512 if (!wiphy) {
513 err = -ENODEV;
514 goto out_unlock;
515 }
516 *rdev = wiphy_to_rdev(wiphy);
517 *wdev = NULL;
518
519 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
520 if (tmp->identifier == cb->args[1]) {
521 *wdev = tmp;
522 break;
523 }
524 }
525
526 if (!*wdev) {
527 err = -ENODEV;
528 goto out_unlock;
529 }
530 }
531
532 return 0;
533 out_unlock:
534 rtnl_unlock();
535 return err;
536 }
537
538 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
539 {
540 rtnl_unlock();
541 }
542
543 /* IE validation */
544 static bool is_valid_ie_attr(const struct nlattr *attr)
545 {
546 const u8 *pos;
547 int len;
548
549 if (!attr)
550 return true;
551
552 pos = nla_data(attr);
553 len = nla_len(attr);
554
555 while (len) {
556 u8 elemlen;
557
558 if (len < 2)
559 return false;
560 len -= 2;
561
562 elemlen = pos[1];
563 if (elemlen > len)
564 return false;
565
566 len -= elemlen;
567 pos += 2 + elemlen;
568 }
569
570 return true;
571 }
572
573 /* message building helper */
574 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
575 int flags, u8 cmd)
576 {
577 /* since there is no private header just add the generic one */
578 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
579 }
580
581 static int nl80211_msg_put_channel(struct sk_buff *msg,
582 struct ieee80211_channel *chan,
583 bool large)
584 {
585 /* Some channels must be completely excluded from the
586 * list to protect old user-space tools from breaking
587 */
588 if (!large && chan->flags &
589 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
590 return 0;
591
592 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
593 chan->center_freq))
594 goto nla_put_failure;
595
596 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
597 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
598 goto nla_put_failure;
599 if (chan->flags & IEEE80211_CHAN_NO_IR) {
600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
601 goto nla_put_failure;
602 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
603 goto nla_put_failure;
604 }
605 if (chan->flags & IEEE80211_CHAN_RADAR) {
606 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
607 goto nla_put_failure;
608 if (large) {
609 u32 time;
610
611 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
612
613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
614 chan->dfs_state))
615 goto nla_put_failure;
616 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
617 time))
618 goto nla_put_failure;
619 if (nla_put_u32(msg,
620 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
621 chan->dfs_cac_ms))
622 goto nla_put_failure;
623 }
624 }
625
626 if (large) {
627 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
644 goto nla_put_failure;
645 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
646 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
647 goto nla_put_failure;
648 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
649 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
650 goto nla_put_failure;
651 }
652
653 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
654 DBM_TO_MBM(chan->max_power)))
655 goto nla_put_failure;
656
657 return 0;
658
659 nla_put_failure:
660 return -ENOBUFS;
661 }
662
663 /* netlink command implementations */
664
665 struct key_parse {
666 struct key_params p;
667 int idx;
668 int type;
669 bool def, defmgmt;
670 bool def_uni, def_multi;
671 };
672
673 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
674 {
675 struct nlattr *tb[NL80211_KEY_MAX + 1];
676 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
677 nl80211_key_policy);
678 if (err)
679 return err;
680
681 k->def = !!tb[NL80211_KEY_DEFAULT];
682 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
683
684 if (k->def) {
685 k->def_uni = true;
686 k->def_multi = true;
687 }
688 if (k->defmgmt)
689 k->def_multi = true;
690
691 if (tb[NL80211_KEY_IDX])
692 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
693
694 if (tb[NL80211_KEY_DATA]) {
695 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
696 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
697 }
698
699 if (tb[NL80211_KEY_SEQ]) {
700 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
701 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
702 }
703
704 if (tb[NL80211_KEY_CIPHER])
705 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
706
707 if (tb[NL80211_KEY_TYPE]) {
708 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
709 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
710 return -EINVAL;
711 }
712
713 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
714 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
715 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
716 tb[NL80211_KEY_DEFAULT_TYPES],
717 nl80211_key_default_policy);
718 if (err)
719 return err;
720
721 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
722 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
723 }
724
725 return 0;
726 }
727
728 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
729 {
730 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
731 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
732 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
733 }
734
735 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
736 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
737 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
738 }
739
740 if (info->attrs[NL80211_ATTR_KEY_IDX])
741 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
742
743 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
744 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
745
746 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
747 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
748
749 if (k->def) {
750 k->def_uni = true;
751 k->def_multi = true;
752 }
753 if (k->defmgmt)
754 k->def_multi = true;
755
756 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
757 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
758 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
759 return -EINVAL;
760 }
761
762 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
763 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
764 int err = nla_parse_nested(
765 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
766 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
767 nl80211_key_default_policy);
768 if (err)
769 return err;
770
771 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
772 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
773 }
774
775 return 0;
776 }
777
778 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
779 {
780 int err;
781
782 memset(k, 0, sizeof(*k));
783 k->idx = -1;
784 k->type = -1;
785
786 if (info->attrs[NL80211_ATTR_KEY])
787 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
788 else
789 err = nl80211_parse_key_old(info, k);
790
791 if (err)
792 return err;
793
794 if (k->def && k->defmgmt)
795 return -EINVAL;
796
797 if (k->defmgmt) {
798 if (k->def_uni || !k->def_multi)
799 return -EINVAL;
800 }
801
802 if (k->idx != -1) {
803 if (k->defmgmt) {
804 if (k->idx < 4 || k->idx > 5)
805 return -EINVAL;
806 } else if (k->def) {
807 if (k->idx < 0 || k->idx > 3)
808 return -EINVAL;
809 } else {
810 if (k->idx < 0 || k->idx > 5)
811 return -EINVAL;
812 }
813 }
814
815 return 0;
816 }
817
818 static struct cfg80211_cached_keys *
819 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
820 struct nlattr *keys, bool *no_ht)
821 {
822 struct key_parse parse;
823 struct nlattr *key;
824 struct cfg80211_cached_keys *result;
825 int rem, err, def = 0;
826
827 result = kzalloc(sizeof(*result), GFP_KERNEL);
828 if (!result)
829 return ERR_PTR(-ENOMEM);
830
831 result->def = -1;
832 result->defmgmt = -1;
833
834 nla_for_each_nested(key, keys, rem) {
835 memset(&parse, 0, sizeof(parse));
836 parse.idx = -1;
837
838 err = nl80211_parse_key_new(key, &parse);
839 if (err)
840 goto error;
841 err = -EINVAL;
842 if (!parse.p.key)
843 goto error;
844 if (parse.idx < 0 || parse.idx > 4)
845 goto error;
846 if (parse.def) {
847 if (def)
848 goto error;
849 def = 1;
850 result->def = parse.idx;
851 if (!parse.def_uni || !parse.def_multi)
852 goto error;
853 } else if (parse.defmgmt)
854 goto error;
855 err = cfg80211_validate_key_settings(rdev, &parse.p,
856 parse.idx, false, NULL);
857 if (err)
858 goto error;
859 result->params[parse.idx].cipher = parse.p.cipher;
860 result->params[parse.idx].key_len = parse.p.key_len;
861 result->params[parse.idx].key = result->data[parse.idx];
862 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
863
864 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
865 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
866 if (no_ht)
867 *no_ht = true;
868 }
869 }
870
871 return result;
872 error:
873 kfree(result);
874 return ERR_PTR(err);
875 }
876
877 static int nl80211_key_allowed(struct wireless_dev *wdev)
878 {
879 ASSERT_WDEV_LOCK(wdev);
880
881 switch (wdev->iftype) {
882 case NL80211_IFTYPE_AP:
883 case NL80211_IFTYPE_AP_VLAN:
884 case NL80211_IFTYPE_P2P_GO:
885 case NL80211_IFTYPE_MESH_POINT:
886 break;
887 case NL80211_IFTYPE_ADHOC:
888 case NL80211_IFTYPE_STATION:
889 case NL80211_IFTYPE_P2P_CLIENT:
890 if (!wdev->current_bss)
891 return -ENOLINK;
892 break;
893 case NL80211_IFTYPE_UNSPECIFIED:
894 case NL80211_IFTYPE_OCB:
895 case NL80211_IFTYPE_MONITOR:
896 case NL80211_IFTYPE_P2P_DEVICE:
897 case NL80211_IFTYPE_WDS:
898 case NUM_NL80211_IFTYPES:
899 return -EINVAL;
900 }
901
902 return 0;
903 }
904
905 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
906 struct nlattr *tb)
907 {
908 struct ieee80211_channel *chan;
909
910 if (tb == NULL)
911 return NULL;
912 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
913 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
914 return NULL;
915 return chan;
916 }
917
918 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
919 {
920 struct nlattr *nl_modes = nla_nest_start(msg, attr);
921 int i;
922
923 if (!nl_modes)
924 goto nla_put_failure;
925
926 i = 0;
927 while (ifmodes) {
928 if ((ifmodes & 1) && nla_put_flag(msg, i))
929 goto nla_put_failure;
930 ifmodes >>= 1;
931 i++;
932 }
933
934 nla_nest_end(msg, nl_modes);
935 return 0;
936
937 nla_put_failure:
938 return -ENOBUFS;
939 }
940
941 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
942 struct sk_buff *msg,
943 bool large)
944 {
945 struct nlattr *nl_combis;
946 int i, j;
947
948 nl_combis = nla_nest_start(msg,
949 NL80211_ATTR_INTERFACE_COMBINATIONS);
950 if (!nl_combis)
951 goto nla_put_failure;
952
953 for (i = 0; i < wiphy->n_iface_combinations; i++) {
954 const struct ieee80211_iface_combination *c;
955 struct nlattr *nl_combi, *nl_limits;
956
957 c = &wiphy->iface_combinations[i];
958
959 nl_combi = nla_nest_start(msg, i + 1);
960 if (!nl_combi)
961 goto nla_put_failure;
962
963 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
964 if (!nl_limits)
965 goto nla_put_failure;
966
967 for (j = 0; j < c->n_limits; j++) {
968 struct nlattr *nl_limit;
969
970 nl_limit = nla_nest_start(msg, j + 1);
971 if (!nl_limit)
972 goto nla_put_failure;
973 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
974 c->limits[j].max))
975 goto nla_put_failure;
976 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
977 c->limits[j].types))
978 goto nla_put_failure;
979 nla_nest_end(msg, nl_limit);
980 }
981
982 nla_nest_end(msg, nl_limits);
983
984 if (c->beacon_int_infra_match &&
985 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
986 goto nla_put_failure;
987 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
988 c->num_different_channels) ||
989 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
990 c->max_interfaces))
991 goto nla_put_failure;
992 if (large &&
993 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
994 c->radar_detect_widths) ||
995 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
996 c->radar_detect_regions)))
997 goto nla_put_failure;
998
999 nla_nest_end(msg, nl_combi);
1000 }
1001
1002 nla_nest_end(msg, nl_combis);
1003
1004 return 0;
1005 nla_put_failure:
1006 return -ENOBUFS;
1007 }
1008
1009 #ifdef CONFIG_PM
1010 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1011 struct sk_buff *msg)
1012 {
1013 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1014 struct nlattr *nl_tcp;
1015
1016 if (!tcp)
1017 return 0;
1018
1019 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1020 if (!nl_tcp)
1021 return -ENOBUFS;
1022
1023 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1024 tcp->data_payload_max))
1025 return -ENOBUFS;
1026
1027 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1028 tcp->data_payload_max))
1029 return -ENOBUFS;
1030
1031 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1032 return -ENOBUFS;
1033
1034 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1035 sizeof(*tcp->tok), tcp->tok))
1036 return -ENOBUFS;
1037
1038 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1039 tcp->data_interval_max))
1040 return -ENOBUFS;
1041
1042 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1043 tcp->wake_payload_max))
1044 return -ENOBUFS;
1045
1046 nla_nest_end(msg, nl_tcp);
1047 return 0;
1048 }
1049
1050 static int nl80211_send_wowlan(struct sk_buff *msg,
1051 struct cfg80211_registered_device *rdev,
1052 bool large)
1053 {
1054 struct nlattr *nl_wowlan;
1055
1056 if (!rdev->wiphy.wowlan)
1057 return 0;
1058
1059 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1060 if (!nl_wowlan)
1061 return -ENOBUFS;
1062
1063 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1064 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1065 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1067 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1068 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1069 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1070 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1071 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1073 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1075 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1076 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1077 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1079 return -ENOBUFS;
1080
1081 if (rdev->wiphy.wowlan->n_patterns) {
1082 struct nl80211_pattern_support pat = {
1083 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1084 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1085 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1086 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1087 };
1088
1089 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1090 sizeof(pat), &pat))
1091 return -ENOBUFS;
1092 }
1093
1094 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1095 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1096 rdev->wiphy.wowlan->max_nd_match_sets))
1097 return -ENOBUFS;
1098
1099 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1100 return -ENOBUFS;
1101
1102 nla_nest_end(msg, nl_wowlan);
1103
1104 return 0;
1105 }
1106 #endif
1107
1108 static int nl80211_send_coalesce(struct sk_buff *msg,
1109 struct cfg80211_registered_device *rdev)
1110 {
1111 struct nl80211_coalesce_rule_support rule;
1112
1113 if (!rdev->wiphy.coalesce)
1114 return 0;
1115
1116 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1117 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1118 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1119 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1120 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1121 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1122
1123 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1124 return -ENOBUFS;
1125
1126 return 0;
1127 }
1128
1129 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1130 struct ieee80211_supported_band *sband)
1131 {
1132 struct nlattr *nl_rates, *nl_rate;
1133 struct ieee80211_rate *rate;
1134 int i;
1135
1136 /* add HT info */
1137 if (sband->ht_cap.ht_supported &&
1138 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1139 sizeof(sband->ht_cap.mcs),
1140 &sband->ht_cap.mcs) ||
1141 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1142 sband->ht_cap.cap) ||
1143 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1144 sband->ht_cap.ampdu_factor) ||
1145 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1146 sband->ht_cap.ampdu_density)))
1147 return -ENOBUFS;
1148
1149 /* add VHT info */
1150 if (sband->vht_cap.vht_supported &&
1151 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1152 sizeof(sband->vht_cap.vht_mcs),
1153 &sband->vht_cap.vht_mcs) ||
1154 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1155 sband->vht_cap.cap)))
1156 return -ENOBUFS;
1157
1158 /* add bitrates */
1159 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1160 if (!nl_rates)
1161 return -ENOBUFS;
1162
1163 for (i = 0; i < sband->n_bitrates; i++) {
1164 nl_rate = nla_nest_start(msg, i);
1165 if (!nl_rate)
1166 return -ENOBUFS;
1167
1168 rate = &sband->bitrates[i];
1169 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1170 rate->bitrate))
1171 return -ENOBUFS;
1172 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1173 nla_put_flag(msg,
1174 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1175 return -ENOBUFS;
1176
1177 nla_nest_end(msg, nl_rate);
1178 }
1179
1180 nla_nest_end(msg, nl_rates);
1181
1182 return 0;
1183 }
1184
1185 static int
1186 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1187 const struct ieee80211_txrx_stypes *mgmt_stypes)
1188 {
1189 u16 stypes;
1190 struct nlattr *nl_ftypes, *nl_ifs;
1191 enum nl80211_iftype ift;
1192 int i;
1193
1194 if (!mgmt_stypes)
1195 return 0;
1196
1197 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1198 if (!nl_ifs)
1199 return -ENOBUFS;
1200
1201 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1202 nl_ftypes = nla_nest_start(msg, ift);
1203 if (!nl_ftypes)
1204 return -ENOBUFS;
1205 i = 0;
1206 stypes = mgmt_stypes[ift].tx;
1207 while (stypes) {
1208 if ((stypes & 1) &&
1209 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1210 (i << 4) | IEEE80211_FTYPE_MGMT))
1211 return -ENOBUFS;
1212 stypes >>= 1;
1213 i++;
1214 }
1215 nla_nest_end(msg, nl_ftypes);
1216 }
1217
1218 nla_nest_end(msg, nl_ifs);
1219
1220 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1221 if (!nl_ifs)
1222 return -ENOBUFS;
1223
1224 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1225 nl_ftypes = nla_nest_start(msg, ift);
1226 if (!nl_ftypes)
1227 return -ENOBUFS;
1228 i = 0;
1229 stypes = mgmt_stypes[ift].rx;
1230 while (stypes) {
1231 if ((stypes & 1) &&
1232 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1233 (i << 4) | IEEE80211_FTYPE_MGMT))
1234 return -ENOBUFS;
1235 stypes >>= 1;
1236 i++;
1237 }
1238 nla_nest_end(msg, nl_ftypes);
1239 }
1240 nla_nest_end(msg, nl_ifs);
1241
1242 return 0;
1243 }
1244
1245 struct nl80211_dump_wiphy_state {
1246 s64 filter_wiphy;
1247 long start;
1248 long split_start, band_start, chan_start;
1249 bool split;
1250 };
1251
1252 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1253 enum nl80211_commands cmd,
1254 struct sk_buff *msg, u32 portid, u32 seq,
1255 int flags, struct nl80211_dump_wiphy_state *state)
1256 {
1257 void *hdr;
1258 struct nlattr *nl_bands, *nl_band;
1259 struct nlattr *nl_freqs, *nl_freq;
1260 struct nlattr *nl_cmds;
1261 enum ieee80211_band band;
1262 struct ieee80211_channel *chan;
1263 int i;
1264 const struct ieee80211_txrx_stypes *mgmt_stypes =
1265 rdev->wiphy.mgmt_stypes;
1266 u32 features;
1267
1268 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1269 if (!hdr)
1270 return -ENOBUFS;
1271
1272 if (WARN_ON(!state))
1273 return -EINVAL;
1274
1275 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1276 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1277 wiphy_name(&rdev->wiphy)) ||
1278 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1279 cfg80211_rdev_list_generation))
1280 goto nla_put_failure;
1281
1282 if (cmd != NL80211_CMD_NEW_WIPHY)
1283 goto finish;
1284
1285 switch (state->split_start) {
1286 case 0:
1287 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1288 rdev->wiphy.retry_short) ||
1289 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1290 rdev->wiphy.retry_long) ||
1291 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1292 rdev->wiphy.frag_threshold) ||
1293 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1294 rdev->wiphy.rts_threshold) ||
1295 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1296 rdev->wiphy.coverage_class) ||
1297 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1298 rdev->wiphy.max_scan_ssids) ||
1299 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1300 rdev->wiphy.max_sched_scan_ssids) ||
1301 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1302 rdev->wiphy.max_scan_ie_len) ||
1303 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1304 rdev->wiphy.max_sched_scan_ie_len) ||
1305 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1306 rdev->wiphy.max_match_sets))
1307 goto nla_put_failure;
1308
1309 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1310 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1311 goto nla_put_failure;
1312 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1313 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1314 goto nla_put_failure;
1315 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1316 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1317 goto nla_put_failure;
1318 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1319 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1320 goto nla_put_failure;
1321 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1322 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1323 goto nla_put_failure;
1324 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1325 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1326 goto nla_put_failure;
1327 state->split_start++;
1328 if (state->split)
1329 break;
1330 case 1:
1331 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1332 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1333 rdev->wiphy.cipher_suites))
1334 goto nla_put_failure;
1335
1336 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1337 rdev->wiphy.max_num_pmkids))
1338 goto nla_put_failure;
1339
1340 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1341 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1342 goto nla_put_failure;
1343
1344 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1345 rdev->wiphy.available_antennas_tx) ||
1346 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1347 rdev->wiphy.available_antennas_rx))
1348 goto nla_put_failure;
1349
1350 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1351 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1352 rdev->wiphy.probe_resp_offload))
1353 goto nla_put_failure;
1354
1355 if ((rdev->wiphy.available_antennas_tx ||
1356 rdev->wiphy.available_antennas_rx) &&
1357 rdev->ops->get_antenna) {
1358 u32 tx_ant = 0, rx_ant = 0;
1359 int res;
1360 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1361 if (!res) {
1362 if (nla_put_u32(msg,
1363 NL80211_ATTR_WIPHY_ANTENNA_TX,
1364 tx_ant) ||
1365 nla_put_u32(msg,
1366 NL80211_ATTR_WIPHY_ANTENNA_RX,
1367 rx_ant))
1368 goto nla_put_failure;
1369 }
1370 }
1371
1372 state->split_start++;
1373 if (state->split)
1374 break;
1375 case 2:
1376 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1377 rdev->wiphy.interface_modes))
1378 goto nla_put_failure;
1379 state->split_start++;
1380 if (state->split)
1381 break;
1382 case 3:
1383 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1384 if (!nl_bands)
1385 goto nla_put_failure;
1386
1387 for (band = state->band_start;
1388 band < IEEE80211_NUM_BANDS; band++) {
1389 struct ieee80211_supported_band *sband;
1390
1391 sband = rdev->wiphy.bands[band];
1392
1393 if (!sband)
1394 continue;
1395
1396 nl_band = nla_nest_start(msg, band);
1397 if (!nl_band)
1398 goto nla_put_failure;
1399
1400 switch (state->chan_start) {
1401 case 0:
1402 if (nl80211_send_band_rateinfo(msg, sband))
1403 goto nla_put_failure;
1404 state->chan_start++;
1405 if (state->split)
1406 break;
1407 default:
1408 /* add frequencies */
1409 nl_freqs = nla_nest_start(
1410 msg, NL80211_BAND_ATTR_FREQS);
1411 if (!nl_freqs)
1412 goto nla_put_failure;
1413
1414 for (i = state->chan_start - 1;
1415 i < sband->n_channels;
1416 i++) {
1417 nl_freq = nla_nest_start(msg, i);
1418 if (!nl_freq)
1419 goto nla_put_failure;
1420
1421 chan = &sband->channels[i];
1422
1423 if (nl80211_msg_put_channel(
1424 msg, chan,
1425 state->split))
1426 goto nla_put_failure;
1427
1428 nla_nest_end(msg, nl_freq);
1429 if (state->split)
1430 break;
1431 }
1432 if (i < sband->n_channels)
1433 state->chan_start = i + 2;
1434 else
1435 state->chan_start = 0;
1436 nla_nest_end(msg, nl_freqs);
1437 }
1438
1439 nla_nest_end(msg, nl_band);
1440
1441 if (state->split) {
1442 /* start again here */
1443 if (state->chan_start)
1444 band--;
1445 break;
1446 }
1447 }
1448 nla_nest_end(msg, nl_bands);
1449
1450 if (band < IEEE80211_NUM_BANDS)
1451 state->band_start = band + 1;
1452 else
1453 state->band_start = 0;
1454
1455 /* if bands & channels are done, continue outside */
1456 if (state->band_start == 0 && state->chan_start == 0)
1457 state->split_start++;
1458 if (state->split)
1459 break;
1460 case 4:
1461 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1462 if (!nl_cmds)
1463 goto nla_put_failure;
1464
1465 i = 0;
1466 #define CMD(op, n) \
1467 do { \
1468 if (rdev->ops->op) { \
1469 i++; \
1470 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1471 goto nla_put_failure; \
1472 } \
1473 } while (0)
1474
1475 CMD(add_virtual_intf, NEW_INTERFACE);
1476 CMD(change_virtual_intf, SET_INTERFACE);
1477 CMD(add_key, NEW_KEY);
1478 CMD(start_ap, START_AP);
1479 CMD(add_station, NEW_STATION);
1480 CMD(add_mpath, NEW_MPATH);
1481 CMD(update_mesh_config, SET_MESH_CONFIG);
1482 CMD(change_bss, SET_BSS);
1483 CMD(auth, AUTHENTICATE);
1484 CMD(assoc, ASSOCIATE);
1485 CMD(deauth, DEAUTHENTICATE);
1486 CMD(disassoc, DISASSOCIATE);
1487 CMD(join_ibss, JOIN_IBSS);
1488 CMD(join_mesh, JOIN_MESH);
1489 CMD(set_pmksa, SET_PMKSA);
1490 CMD(del_pmksa, DEL_PMKSA);
1491 CMD(flush_pmksa, FLUSH_PMKSA);
1492 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1493 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1494 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1495 CMD(mgmt_tx, FRAME);
1496 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1497 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1498 i++;
1499 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1500 goto nla_put_failure;
1501 }
1502 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1503 rdev->ops->join_mesh) {
1504 i++;
1505 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1506 goto nla_put_failure;
1507 }
1508 CMD(set_wds_peer, SET_WDS_PEER);
1509 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1510 CMD(tdls_mgmt, TDLS_MGMT);
1511 CMD(tdls_oper, TDLS_OPER);
1512 }
1513 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1514 CMD(sched_scan_start, START_SCHED_SCAN);
1515 CMD(probe_client, PROBE_CLIENT);
1516 CMD(set_noack_map, SET_NOACK_MAP);
1517 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1518 i++;
1519 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1520 goto nla_put_failure;
1521 }
1522 CMD(start_p2p_device, START_P2P_DEVICE);
1523 CMD(set_mcast_rate, SET_MCAST_RATE);
1524 #ifdef CONFIG_NL80211_TESTMODE
1525 CMD(testmode_cmd, TESTMODE);
1526 #endif
1527 if (state->split) {
1528 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1529 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1530 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1531 CMD(channel_switch, CHANNEL_SWITCH);
1532 CMD(set_qos_map, SET_QOS_MAP);
1533 if (rdev->wiphy.features &
1534 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1535 CMD(add_tx_ts, ADD_TX_TS);
1536 }
1537 /* add into the if now */
1538 #undef CMD
1539
1540 if (rdev->ops->connect || rdev->ops->auth) {
1541 i++;
1542 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1543 goto nla_put_failure;
1544 }
1545
1546 if (rdev->ops->disconnect || rdev->ops->deauth) {
1547 i++;
1548 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1549 goto nla_put_failure;
1550 }
1551
1552 nla_nest_end(msg, nl_cmds);
1553 state->split_start++;
1554 if (state->split)
1555 break;
1556 case 5:
1557 if (rdev->ops->remain_on_channel &&
1558 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1559 nla_put_u32(msg,
1560 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1561 rdev->wiphy.max_remain_on_channel_duration))
1562 goto nla_put_failure;
1563
1564 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1565 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1566 goto nla_put_failure;
1567
1568 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1569 goto nla_put_failure;
1570 state->split_start++;
1571 if (state->split)
1572 break;
1573 case 6:
1574 #ifdef CONFIG_PM
1575 if (nl80211_send_wowlan(msg, rdev, state->split))
1576 goto nla_put_failure;
1577 state->split_start++;
1578 if (state->split)
1579 break;
1580 #else
1581 state->split_start++;
1582 #endif
1583 case 7:
1584 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1585 rdev->wiphy.software_iftypes))
1586 goto nla_put_failure;
1587
1588 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1589 state->split))
1590 goto nla_put_failure;
1591
1592 state->split_start++;
1593 if (state->split)
1594 break;
1595 case 8:
1596 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1597 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1598 rdev->wiphy.ap_sme_capa))
1599 goto nla_put_failure;
1600
1601 features = rdev->wiphy.features;
1602 /*
1603 * We can only add the per-channel limit information if the
1604 * dump is split, otherwise it makes it too big. Therefore
1605 * only advertise it in that case.
1606 */
1607 if (state->split)
1608 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1609 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1610 goto nla_put_failure;
1611
1612 if (rdev->wiphy.ht_capa_mod_mask &&
1613 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1614 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1615 rdev->wiphy.ht_capa_mod_mask))
1616 goto nla_put_failure;
1617
1618 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1619 rdev->wiphy.max_acl_mac_addrs &&
1620 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1621 rdev->wiphy.max_acl_mac_addrs))
1622 goto nla_put_failure;
1623
1624 /*
1625 * Any information below this point is only available to
1626 * applications that can deal with it being split. This
1627 * helps ensure that newly added capabilities don't break
1628 * older tools by overrunning their buffers.
1629 *
1630 * We still increment split_start so that in the split
1631 * case we'll continue with more data in the next round,
1632 * but break unconditionally so unsplit data stops here.
1633 */
1634 state->split_start++;
1635 break;
1636 case 9:
1637 if (rdev->wiphy.extended_capabilities &&
1638 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1639 rdev->wiphy.extended_capabilities_len,
1640 rdev->wiphy.extended_capabilities) ||
1641 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1642 rdev->wiphy.extended_capabilities_len,
1643 rdev->wiphy.extended_capabilities_mask)))
1644 goto nla_put_failure;
1645
1646 if (rdev->wiphy.vht_capa_mod_mask &&
1647 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1648 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1649 rdev->wiphy.vht_capa_mod_mask))
1650 goto nla_put_failure;
1651
1652 state->split_start++;
1653 break;
1654 case 10:
1655 if (nl80211_send_coalesce(msg, rdev))
1656 goto nla_put_failure;
1657
1658 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1659 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1660 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1661 goto nla_put_failure;
1662
1663 if (rdev->wiphy.max_ap_assoc_sta &&
1664 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1665 rdev->wiphy.max_ap_assoc_sta))
1666 goto nla_put_failure;
1667
1668 state->split_start++;
1669 break;
1670 case 11:
1671 if (rdev->wiphy.n_vendor_commands) {
1672 const struct nl80211_vendor_cmd_info *info;
1673 struct nlattr *nested;
1674
1675 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1676 if (!nested)
1677 goto nla_put_failure;
1678
1679 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1680 info = &rdev->wiphy.vendor_commands[i].info;
1681 if (nla_put(msg, i + 1, sizeof(*info), info))
1682 goto nla_put_failure;
1683 }
1684 nla_nest_end(msg, nested);
1685 }
1686
1687 if (rdev->wiphy.n_vendor_events) {
1688 const struct nl80211_vendor_cmd_info *info;
1689 struct nlattr *nested;
1690
1691 nested = nla_nest_start(msg,
1692 NL80211_ATTR_VENDOR_EVENTS);
1693 if (!nested)
1694 goto nla_put_failure;
1695
1696 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1697 info = &rdev->wiphy.vendor_events[i];
1698 if (nla_put(msg, i + 1, sizeof(*info), info))
1699 goto nla_put_failure;
1700 }
1701 nla_nest_end(msg, nested);
1702 }
1703 state->split_start++;
1704 break;
1705 case 12:
1706 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1707 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1708 rdev->wiphy.max_num_csa_counters))
1709 goto nla_put_failure;
1710
1711 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1712 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1713 goto nla_put_failure;
1714
1715 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1716 sizeof(rdev->wiphy.ext_features),
1717 rdev->wiphy.ext_features))
1718 goto nla_put_failure;
1719
1720 /* done */
1721 state->split_start = 0;
1722 break;
1723 }
1724 finish:
1725 genlmsg_end(msg, hdr);
1726 return 0;
1727
1728 nla_put_failure:
1729 genlmsg_cancel(msg, hdr);
1730 return -EMSGSIZE;
1731 }
1732
1733 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1734 struct netlink_callback *cb,
1735 struct nl80211_dump_wiphy_state *state)
1736 {
1737 struct nlattr **tb = nl80211_fam.attrbuf;
1738 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1739 tb, nl80211_fam.maxattr, nl80211_policy);
1740 /* ignore parse errors for backward compatibility */
1741 if (ret)
1742 return 0;
1743
1744 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1745 if (tb[NL80211_ATTR_WIPHY])
1746 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1747 if (tb[NL80211_ATTR_WDEV])
1748 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1749 if (tb[NL80211_ATTR_IFINDEX]) {
1750 struct net_device *netdev;
1751 struct cfg80211_registered_device *rdev;
1752 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1753
1754 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1755 if (!netdev)
1756 return -ENODEV;
1757 if (netdev->ieee80211_ptr) {
1758 rdev = wiphy_to_rdev(
1759 netdev->ieee80211_ptr->wiphy);
1760 state->filter_wiphy = rdev->wiphy_idx;
1761 }
1762 }
1763
1764 return 0;
1765 }
1766
1767 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1768 {
1769 int idx = 0, ret;
1770 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1771 struct cfg80211_registered_device *rdev;
1772
1773 rtnl_lock();
1774 if (!state) {
1775 state = kzalloc(sizeof(*state), GFP_KERNEL);
1776 if (!state) {
1777 rtnl_unlock();
1778 return -ENOMEM;
1779 }
1780 state->filter_wiphy = -1;
1781 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1782 if (ret) {
1783 kfree(state);
1784 rtnl_unlock();
1785 return ret;
1786 }
1787 cb->args[0] = (long)state;
1788 }
1789
1790 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1791 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1792 continue;
1793 if (++idx <= state->start)
1794 continue;
1795 if (state->filter_wiphy != -1 &&
1796 state->filter_wiphy != rdev->wiphy_idx)
1797 continue;
1798 /* attempt to fit multiple wiphy data chunks into the skb */
1799 do {
1800 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1801 skb,
1802 NETLINK_CB(cb->skb).portid,
1803 cb->nlh->nlmsg_seq,
1804 NLM_F_MULTI, state);
1805 if (ret < 0) {
1806 /*
1807 * If sending the wiphy data didn't fit (ENOBUFS
1808 * or EMSGSIZE returned), this SKB is still
1809 * empty (so it's not too big because another
1810 * wiphy dataset is already in the skb) and
1811 * we've not tried to adjust the dump allocation
1812 * yet ... then adjust the alloc size to be
1813 * bigger, and return 1 but with the empty skb.
1814 * This results in an empty message being RX'ed
1815 * in userspace, but that is ignored.
1816 *
1817 * We can then retry with the larger buffer.
1818 */
1819 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1820 !skb->len && !state->split &&
1821 cb->min_dump_alloc < 4096) {
1822 cb->min_dump_alloc = 4096;
1823 state->split_start = 0;
1824 rtnl_unlock();
1825 return 1;
1826 }
1827 idx--;
1828 break;
1829 }
1830 } while (state->split_start > 0);
1831 break;
1832 }
1833 rtnl_unlock();
1834
1835 state->start = idx;
1836
1837 return skb->len;
1838 }
1839
1840 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1841 {
1842 kfree((void *)cb->args[0]);
1843 return 0;
1844 }
1845
1846 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1847 {
1848 struct sk_buff *msg;
1849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1850 struct nl80211_dump_wiphy_state state = {};
1851
1852 msg = nlmsg_new(4096, GFP_KERNEL);
1853 if (!msg)
1854 return -ENOMEM;
1855
1856 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1857 info->snd_portid, info->snd_seq, 0,
1858 &state) < 0) {
1859 nlmsg_free(msg);
1860 return -ENOBUFS;
1861 }
1862
1863 return genlmsg_reply(msg, info);
1864 }
1865
1866 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1867 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1868 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1869 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1870 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1871 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1872 };
1873
1874 static int parse_txq_params(struct nlattr *tb[],
1875 struct ieee80211_txq_params *txq_params)
1876 {
1877 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1878 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1879 !tb[NL80211_TXQ_ATTR_AIFS])
1880 return -EINVAL;
1881
1882 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1883 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1884 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1885 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1886 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1887
1888 if (txq_params->ac >= NL80211_NUM_ACS)
1889 return -EINVAL;
1890
1891 return 0;
1892 }
1893
1894 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1895 {
1896 /*
1897 * You can only set the channel explicitly for WDS interfaces,
1898 * all others have their channel managed via their respective
1899 * "establish a connection" command (connect, join, ...)
1900 *
1901 * For AP/GO and mesh mode, the channel can be set with the
1902 * channel userspace API, but is only stored and passed to the
1903 * low-level driver when the AP starts or the mesh is joined.
1904 * This is for backward compatibility, userspace can also give
1905 * the channel in the start-ap or join-mesh commands instead.
1906 *
1907 * Monitors are special as they are normally slaved to
1908 * whatever else is going on, so they have their own special
1909 * operation to set the monitor channel if possible.
1910 */
1911 return !wdev ||
1912 wdev->iftype == NL80211_IFTYPE_AP ||
1913 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1914 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1915 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1916 }
1917
1918 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1919 struct genl_info *info,
1920 struct cfg80211_chan_def *chandef)
1921 {
1922 u32 control_freq;
1923
1924 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1925 return -EINVAL;
1926
1927 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1928
1929 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1930 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1931 chandef->center_freq1 = control_freq;
1932 chandef->center_freq2 = 0;
1933
1934 /* Primary channel not allowed */
1935 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1936 return -EINVAL;
1937
1938 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1939 enum nl80211_channel_type chantype;
1940
1941 chantype = nla_get_u32(
1942 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1943
1944 switch (chantype) {
1945 case NL80211_CHAN_NO_HT:
1946 case NL80211_CHAN_HT20:
1947 case NL80211_CHAN_HT40PLUS:
1948 case NL80211_CHAN_HT40MINUS:
1949 cfg80211_chandef_create(chandef, chandef->chan,
1950 chantype);
1951 break;
1952 default:
1953 return -EINVAL;
1954 }
1955 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1956 chandef->width =
1957 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1958 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1959 chandef->center_freq1 =
1960 nla_get_u32(
1961 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1962 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1963 chandef->center_freq2 =
1964 nla_get_u32(
1965 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1966 }
1967
1968 if (!cfg80211_chandef_valid(chandef))
1969 return -EINVAL;
1970
1971 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1972 IEEE80211_CHAN_DISABLED))
1973 return -EINVAL;
1974
1975 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1976 chandef->width == NL80211_CHAN_WIDTH_10) &&
1977 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1978 return -EINVAL;
1979
1980 return 0;
1981 }
1982
1983 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1984 struct net_device *dev,
1985 struct genl_info *info)
1986 {
1987 struct cfg80211_chan_def chandef;
1988 int result;
1989 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1990 struct wireless_dev *wdev = NULL;
1991
1992 if (dev)
1993 wdev = dev->ieee80211_ptr;
1994 if (!nl80211_can_set_dev_channel(wdev))
1995 return -EOPNOTSUPP;
1996 if (wdev)
1997 iftype = wdev->iftype;
1998
1999 result = nl80211_parse_chandef(rdev, info, &chandef);
2000 if (result)
2001 return result;
2002
2003 switch (iftype) {
2004 case NL80211_IFTYPE_AP:
2005 case NL80211_IFTYPE_P2P_GO:
2006 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2007 iftype)) {
2008 result = -EINVAL;
2009 break;
2010 }
2011 if (wdev->beacon_interval) {
2012 if (!dev || !rdev->ops->set_ap_chanwidth ||
2013 !(rdev->wiphy.features &
2014 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2015 result = -EBUSY;
2016 break;
2017 }
2018
2019 /* Only allow dynamic channel width changes */
2020 if (chandef.chan != wdev->preset_chandef.chan) {
2021 result = -EBUSY;
2022 break;
2023 }
2024 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2025 if (result)
2026 break;
2027 }
2028 wdev->preset_chandef = chandef;
2029 result = 0;
2030 break;
2031 case NL80211_IFTYPE_MESH_POINT:
2032 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2033 break;
2034 case NL80211_IFTYPE_MONITOR:
2035 result = cfg80211_set_monitor_channel(rdev, &chandef);
2036 break;
2037 default:
2038 result = -EINVAL;
2039 }
2040
2041 return result;
2042 }
2043
2044 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2045 {
2046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047 struct net_device *netdev = info->user_ptr[1];
2048
2049 return __nl80211_set_channel(rdev, netdev, info);
2050 }
2051
2052 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2053 {
2054 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2055 struct net_device *dev = info->user_ptr[1];
2056 struct wireless_dev *wdev = dev->ieee80211_ptr;
2057 const u8 *bssid;
2058
2059 if (!info->attrs[NL80211_ATTR_MAC])
2060 return -EINVAL;
2061
2062 if (netif_running(dev))
2063 return -EBUSY;
2064
2065 if (!rdev->ops->set_wds_peer)
2066 return -EOPNOTSUPP;
2067
2068 if (wdev->iftype != NL80211_IFTYPE_WDS)
2069 return -EOPNOTSUPP;
2070
2071 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2072 return rdev_set_wds_peer(rdev, dev, bssid);
2073 }
2074
2075
2076 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2077 {
2078 struct cfg80211_registered_device *rdev;
2079 struct net_device *netdev = NULL;
2080 struct wireless_dev *wdev;
2081 int result = 0, rem_txq_params = 0;
2082 struct nlattr *nl_txq_params;
2083 u32 changed;
2084 u8 retry_short = 0, retry_long = 0;
2085 u32 frag_threshold = 0, rts_threshold = 0;
2086 u8 coverage_class = 0;
2087
2088 ASSERT_RTNL();
2089
2090 /*
2091 * Try to find the wiphy and netdev. Normally this
2092 * function shouldn't need the netdev, but this is
2093 * done for backward compatibility -- previously
2094 * setting the channel was done per wiphy, but now
2095 * it is per netdev. Previous userland like hostapd
2096 * also passed a netdev to set_wiphy, so that it is
2097 * possible to let that go to the right netdev!
2098 */
2099
2100 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2101 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2102
2103 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2104 if (netdev && netdev->ieee80211_ptr)
2105 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2106 else
2107 netdev = NULL;
2108 }
2109
2110 if (!netdev) {
2111 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2112 info->attrs);
2113 if (IS_ERR(rdev))
2114 return PTR_ERR(rdev);
2115 wdev = NULL;
2116 netdev = NULL;
2117 result = 0;
2118 } else
2119 wdev = netdev->ieee80211_ptr;
2120
2121 /*
2122 * end workaround code, by now the rdev is available
2123 * and locked, and wdev may or may not be NULL.
2124 */
2125
2126 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2127 result = cfg80211_dev_rename(
2128 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2129
2130 if (result)
2131 return result;
2132
2133 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2134 struct ieee80211_txq_params txq_params;
2135 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2136
2137 if (!rdev->ops->set_txq_params)
2138 return -EOPNOTSUPP;
2139
2140 if (!netdev)
2141 return -EINVAL;
2142
2143 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2144 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2145 return -EINVAL;
2146
2147 if (!netif_running(netdev))
2148 return -ENETDOWN;
2149
2150 nla_for_each_nested(nl_txq_params,
2151 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2152 rem_txq_params) {
2153 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2154 nla_data(nl_txq_params),
2155 nla_len(nl_txq_params),
2156 txq_params_policy);
2157 if (result)
2158 return result;
2159 result = parse_txq_params(tb, &txq_params);
2160 if (result)
2161 return result;
2162
2163 result = rdev_set_txq_params(rdev, netdev,
2164 &txq_params);
2165 if (result)
2166 return result;
2167 }
2168 }
2169
2170 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2171 result = __nl80211_set_channel(
2172 rdev,
2173 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2174 info);
2175 if (result)
2176 return result;
2177 }
2178
2179 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2180 struct wireless_dev *txp_wdev = wdev;
2181 enum nl80211_tx_power_setting type;
2182 int idx, mbm = 0;
2183
2184 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2185 txp_wdev = NULL;
2186
2187 if (!rdev->ops->set_tx_power)
2188 return -EOPNOTSUPP;
2189
2190 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2191 type = nla_get_u32(info->attrs[idx]);
2192
2193 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2194 (type != NL80211_TX_POWER_AUTOMATIC))
2195 return -EINVAL;
2196
2197 if (type != NL80211_TX_POWER_AUTOMATIC) {
2198 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2199 mbm = nla_get_u32(info->attrs[idx]);
2200 }
2201
2202 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2203 if (result)
2204 return result;
2205 }
2206
2207 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2208 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2209 u32 tx_ant, rx_ant;
2210 if ((!rdev->wiphy.available_antennas_tx &&
2211 !rdev->wiphy.available_antennas_rx) ||
2212 !rdev->ops->set_antenna)
2213 return -EOPNOTSUPP;
2214
2215 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2216 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2217
2218 /* reject antenna configurations which don't match the
2219 * available antenna masks, except for the "all" mask */
2220 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2221 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2222 return -EINVAL;
2223
2224 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2225 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2226
2227 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2228 if (result)
2229 return result;
2230 }
2231
2232 changed = 0;
2233
2234 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2235 retry_short = nla_get_u8(
2236 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2237 if (retry_short == 0)
2238 return -EINVAL;
2239
2240 changed |= WIPHY_PARAM_RETRY_SHORT;
2241 }
2242
2243 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2244 retry_long = nla_get_u8(
2245 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2246 if (retry_long == 0)
2247 return -EINVAL;
2248
2249 changed |= WIPHY_PARAM_RETRY_LONG;
2250 }
2251
2252 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2253 frag_threshold = nla_get_u32(
2254 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2255 if (frag_threshold < 256)
2256 return -EINVAL;
2257
2258 if (frag_threshold != (u32) -1) {
2259 /*
2260 * Fragments (apart from the last one) are required to
2261 * have even length. Make the fragmentation code
2262 * simpler by stripping LSB should someone try to use
2263 * odd threshold value.
2264 */
2265 frag_threshold &= ~0x1;
2266 }
2267 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2268 }
2269
2270 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2271 rts_threshold = nla_get_u32(
2272 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2273 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2274 }
2275
2276 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2277 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2278 return -EINVAL;
2279
2280 coverage_class = nla_get_u8(
2281 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2282 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2283 }
2284
2285 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2286 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2287 return -EOPNOTSUPP;
2288
2289 changed |= WIPHY_PARAM_DYN_ACK;
2290 }
2291
2292 if (changed) {
2293 u8 old_retry_short, old_retry_long;
2294 u32 old_frag_threshold, old_rts_threshold;
2295 u8 old_coverage_class;
2296
2297 if (!rdev->ops->set_wiphy_params)
2298 return -EOPNOTSUPP;
2299
2300 old_retry_short = rdev->wiphy.retry_short;
2301 old_retry_long = rdev->wiphy.retry_long;
2302 old_frag_threshold = rdev->wiphy.frag_threshold;
2303 old_rts_threshold = rdev->wiphy.rts_threshold;
2304 old_coverage_class = rdev->wiphy.coverage_class;
2305
2306 if (changed & WIPHY_PARAM_RETRY_SHORT)
2307 rdev->wiphy.retry_short = retry_short;
2308 if (changed & WIPHY_PARAM_RETRY_LONG)
2309 rdev->wiphy.retry_long = retry_long;
2310 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2311 rdev->wiphy.frag_threshold = frag_threshold;
2312 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2313 rdev->wiphy.rts_threshold = rts_threshold;
2314 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2315 rdev->wiphy.coverage_class = coverage_class;
2316
2317 result = rdev_set_wiphy_params(rdev, changed);
2318 if (result) {
2319 rdev->wiphy.retry_short = old_retry_short;
2320 rdev->wiphy.retry_long = old_retry_long;
2321 rdev->wiphy.frag_threshold = old_frag_threshold;
2322 rdev->wiphy.rts_threshold = old_rts_threshold;
2323 rdev->wiphy.coverage_class = old_coverage_class;
2324 }
2325 }
2326 return 0;
2327 }
2328
2329 static 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
2335 static 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
2365 static 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
2418 static 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
2461 static 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
2480 static 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
2489 static 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
2510 static 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
2536 static 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
2613 static 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 NET_NAME_USER, type, err ? NULL : &flags,
2672 &params);
2673 if (WARN_ON(!wdev)) {
2674 nlmsg_free(msg);
2675 return -EPROTO;
2676 } else if (IS_ERR(wdev)) {
2677 nlmsg_free(msg);
2678 return PTR_ERR(wdev);
2679 }
2680
2681 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2682 wdev->owner_nlportid = info->snd_portid;
2683
2684 switch (type) {
2685 case NL80211_IFTYPE_MESH_POINT:
2686 if (!info->attrs[NL80211_ATTR_MESH_ID])
2687 break;
2688 wdev_lock(wdev);
2689 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2690 IEEE80211_MAX_MESH_ID_LEN);
2691 wdev->mesh_id_up_len =
2692 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2693 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2694 wdev->mesh_id_up_len);
2695 wdev_unlock(wdev);
2696 break;
2697 case NL80211_IFTYPE_P2P_DEVICE:
2698 /*
2699 * P2P Device doesn't have a netdev, so doesn't go
2700 * through the netdev notifier and must be added here
2701 */
2702 mutex_init(&wdev->mtx);
2703 INIT_LIST_HEAD(&wdev->event_list);
2704 spin_lock_init(&wdev->event_lock);
2705 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2706 spin_lock_init(&wdev->mgmt_registrations_lock);
2707
2708 wdev->identifier = ++rdev->wdev_id;
2709 list_add_rcu(&wdev->list, &rdev->wdev_list);
2710 rdev->devlist_generation++;
2711 break;
2712 default:
2713 break;
2714 }
2715
2716 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2717 rdev, wdev, false) < 0) {
2718 nlmsg_free(msg);
2719 return -ENOBUFS;
2720 }
2721
2722 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2723 if (event) {
2724 if (nl80211_send_iface(event, 0, 0, 0,
2725 rdev, wdev, false) < 0) {
2726 nlmsg_free(event);
2727 goto out;
2728 }
2729
2730 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2731 event, 0, NL80211_MCGRP_CONFIG,
2732 GFP_KERNEL);
2733 }
2734
2735 out:
2736 return genlmsg_reply(msg, info);
2737 }
2738
2739 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2740 {
2741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2742 struct wireless_dev *wdev = info->user_ptr[1];
2743 struct sk_buff *msg;
2744 int status;
2745
2746 if (!rdev->ops->del_virtual_intf)
2747 return -EOPNOTSUPP;
2748
2749 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2750 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2751 nlmsg_free(msg);
2752 msg = NULL;
2753 }
2754
2755 /*
2756 * If we remove a wireless device without a netdev then clear
2757 * user_ptr[1] so that nl80211_post_doit won't dereference it
2758 * to check if it needs to do dev_put(). Otherwise it crashes
2759 * since the wdev has been freed, unlike with a netdev where
2760 * we need the dev_put() for the netdev to really be freed.
2761 */
2762 if (!wdev->netdev)
2763 info->user_ptr[1] = NULL;
2764
2765 status = rdev_del_virtual_intf(rdev, wdev);
2766 if (status >= 0 && msg)
2767 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2768 msg, 0, NL80211_MCGRP_CONFIG,
2769 GFP_KERNEL);
2770 else
2771 nlmsg_free(msg);
2772
2773 return status;
2774 }
2775
2776 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2777 {
2778 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2779 struct net_device *dev = info->user_ptr[1];
2780 u16 noack_map;
2781
2782 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2783 return -EINVAL;
2784
2785 if (!rdev->ops->set_noack_map)
2786 return -EOPNOTSUPP;
2787
2788 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2789
2790 return rdev_set_noack_map(rdev, dev, noack_map);
2791 }
2792
2793 struct get_key_cookie {
2794 struct sk_buff *msg;
2795 int error;
2796 int idx;
2797 };
2798
2799 static void get_key_callback(void *c, struct key_params *params)
2800 {
2801 struct nlattr *key;
2802 struct get_key_cookie *cookie = c;
2803
2804 if ((params->key &&
2805 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2806 params->key_len, params->key)) ||
2807 (params->seq &&
2808 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2809 params->seq_len, params->seq)) ||
2810 (params->cipher &&
2811 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2812 params->cipher)))
2813 goto nla_put_failure;
2814
2815 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2816 if (!key)
2817 goto nla_put_failure;
2818
2819 if ((params->key &&
2820 nla_put(cookie->msg, NL80211_KEY_DATA,
2821 params->key_len, params->key)) ||
2822 (params->seq &&
2823 nla_put(cookie->msg, NL80211_KEY_SEQ,
2824 params->seq_len, params->seq)) ||
2825 (params->cipher &&
2826 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2827 params->cipher)))
2828 goto nla_put_failure;
2829
2830 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2831 goto nla_put_failure;
2832
2833 nla_nest_end(cookie->msg, key);
2834
2835 return;
2836 nla_put_failure:
2837 cookie->error = 1;
2838 }
2839
2840 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2841 {
2842 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2843 int err;
2844 struct net_device *dev = info->user_ptr[1];
2845 u8 key_idx = 0;
2846 const u8 *mac_addr = NULL;
2847 bool pairwise;
2848 struct get_key_cookie cookie = {
2849 .error = 0,
2850 };
2851 void *hdr;
2852 struct sk_buff *msg;
2853
2854 if (info->attrs[NL80211_ATTR_KEY_IDX])
2855 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2856
2857 if (key_idx > 5)
2858 return -EINVAL;
2859
2860 if (info->attrs[NL80211_ATTR_MAC])
2861 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2862
2863 pairwise = !!mac_addr;
2864 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2865 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2866 if (kt >= NUM_NL80211_KEYTYPES)
2867 return -EINVAL;
2868 if (kt != NL80211_KEYTYPE_GROUP &&
2869 kt != NL80211_KEYTYPE_PAIRWISE)
2870 return -EINVAL;
2871 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2872 }
2873
2874 if (!rdev->ops->get_key)
2875 return -EOPNOTSUPP;
2876
2877 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2878 return -ENOENT;
2879
2880 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2881 if (!msg)
2882 return -ENOMEM;
2883
2884 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2885 NL80211_CMD_NEW_KEY);
2886 if (!hdr)
2887 goto nla_put_failure;
2888
2889 cookie.msg = msg;
2890 cookie.idx = key_idx;
2891
2892 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2893 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2894 goto nla_put_failure;
2895 if (mac_addr &&
2896 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2897 goto nla_put_failure;
2898
2899 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2900 get_key_callback);
2901
2902 if (err)
2903 goto free_msg;
2904
2905 if (cookie.error)
2906 goto nla_put_failure;
2907
2908 genlmsg_end(msg, hdr);
2909 return genlmsg_reply(msg, info);
2910
2911 nla_put_failure:
2912 err = -ENOBUFS;
2913 free_msg:
2914 nlmsg_free(msg);
2915 return err;
2916 }
2917
2918 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2919 {
2920 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2921 struct key_parse key;
2922 int err;
2923 struct net_device *dev = info->user_ptr[1];
2924
2925 err = nl80211_parse_key(info, &key);
2926 if (err)
2927 return err;
2928
2929 if (key.idx < 0)
2930 return -EINVAL;
2931
2932 /* only support setting default key */
2933 if (!key.def && !key.defmgmt)
2934 return -EINVAL;
2935
2936 wdev_lock(dev->ieee80211_ptr);
2937
2938 if (key.def) {
2939 if (!rdev->ops->set_default_key) {
2940 err = -EOPNOTSUPP;
2941 goto out;
2942 }
2943
2944 err = nl80211_key_allowed(dev->ieee80211_ptr);
2945 if (err)
2946 goto out;
2947
2948 err = rdev_set_default_key(rdev, dev, key.idx,
2949 key.def_uni, key.def_multi);
2950
2951 if (err)
2952 goto out;
2953
2954 #ifdef CONFIG_CFG80211_WEXT
2955 dev->ieee80211_ptr->wext.default_key = key.idx;
2956 #endif
2957 } else {
2958 if (key.def_uni || !key.def_multi) {
2959 err = -EINVAL;
2960 goto out;
2961 }
2962
2963 if (!rdev->ops->set_default_mgmt_key) {
2964 err = -EOPNOTSUPP;
2965 goto out;
2966 }
2967
2968 err = nl80211_key_allowed(dev->ieee80211_ptr);
2969 if (err)
2970 goto out;
2971
2972 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2973 if (err)
2974 goto out;
2975
2976 #ifdef CONFIG_CFG80211_WEXT
2977 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2978 #endif
2979 }
2980
2981 out:
2982 wdev_unlock(dev->ieee80211_ptr);
2983
2984 return err;
2985 }
2986
2987 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2988 {
2989 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2990 int err;
2991 struct net_device *dev = info->user_ptr[1];
2992 struct key_parse key;
2993 const u8 *mac_addr = NULL;
2994
2995 err = nl80211_parse_key(info, &key);
2996 if (err)
2997 return err;
2998
2999 if (!key.p.key)
3000 return -EINVAL;
3001
3002 if (info->attrs[NL80211_ATTR_MAC])
3003 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3004
3005 if (key.type == -1) {
3006 if (mac_addr)
3007 key.type = NL80211_KEYTYPE_PAIRWISE;
3008 else
3009 key.type = NL80211_KEYTYPE_GROUP;
3010 }
3011
3012 /* for now */
3013 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3014 key.type != NL80211_KEYTYPE_GROUP)
3015 return -EINVAL;
3016
3017 if (!rdev->ops->add_key)
3018 return -EOPNOTSUPP;
3019
3020 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3021 key.type == NL80211_KEYTYPE_PAIRWISE,
3022 mac_addr))
3023 return -EINVAL;
3024
3025 wdev_lock(dev->ieee80211_ptr);
3026 err = nl80211_key_allowed(dev->ieee80211_ptr);
3027 if (!err)
3028 err = rdev_add_key(rdev, dev, key.idx,
3029 key.type == NL80211_KEYTYPE_PAIRWISE,
3030 mac_addr, &key.p);
3031 wdev_unlock(dev->ieee80211_ptr);
3032
3033 return err;
3034 }
3035
3036 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3037 {
3038 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3039 int err;
3040 struct net_device *dev = info->user_ptr[1];
3041 u8 *mac_addr = NULL;
3042 struct key_parse key;
3043
3044 err = nl80211_parse_key(info, &key);
3045 if (err)
3046 return err;
3047
3048 if (info->attrs[NL80211_ATTR_MAC])
3049 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3050
3051 if (key.type == -1) {
3052 if (mac_addr)
3053 key.type = NL80211_KEYTYPE_PAIRWISE;
3054 else
3055 key.type = NL80211_KEYTYPE_GROUP;
3056 }
3057
3058 /* for now */
3059 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3060 key.type != NL80211_KEYTYPE_GROUP)
3061 return -EINVAL;
3062
3063 if (!rdev->ops->del_key)
3064 return -EOPNOTSUPP;
3065
3066 wdev_lock(dev->ieee80211_ptr);
3067 err = nl80211_key_allowed(dev->ieee80211_ptr);
3068
3069 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3070 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3071 err = -ENOENT;
3072
3073 if (!err)
3074 err = rdev_del_key(rdev, dev, key.idx,
3075 key.type == NL80211_KEYTYPE_PAIRWISE,
3076 mac_addr);
3077
3078 #ifdef CONFIG_CFG80211_WEXT
3079 if (!err) {
3080 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3081 dev->ieee80211_ptr->wext.default_key = -1;
3082 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3083 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3084 }
3085 #endif
3086 wdev_unlock(dev->ieee80211_ptr);
3087
3088 return err;
3089 }
3090
3091 /* This function returns an error or the number of nested attributes */
3092 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3093 {
3094 struct nlattr *attr;
3095 int n_entries = 0, tmp;
3096
3097 nla_for_each_nested(attr, nl_attr, tmp) {
3098 if (nla_len(attr) != ETH_ALEN)
3099 return -EINVAL;
3100
3101 n_entries++;
3102 }
3103
3104 return n_entries;
3105 }
3106
3107 /*
3108 * This function parses ACL information and allocates memory for ACL data.
3109 * On successful return, the calling function is responsible to free the
3110 * ACL buffer returned by this function.
3111 */
3112 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3113 struct genl_info *info)
3114 {
3115 enum nl80211_acl_policy acl_policy;
3116 struct nlattr *attr;
3117 struct cfg80211_acl_data *acl;
3118 int i = 0, n_entries, tmp;
3119
3120 if (!wiphy->max_acl_mac_addrs)
3121 return ERR_PTR(-EOPNOTSUPP);
3122
3123 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3124 return ERR_PTR(-EINVAL);
3125
3126 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3127 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3128 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3129 return ERR_PTR(-EINVAL);
3130
3131 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3132 return ERR_PTR(-EINVAL);
3133
3134 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3135 if (n_entries < 0)
3136 return ERR_PTR(n_entries);
3137
3138 if (n_entries > wiphy->max_acl_mac_addrs)
3139 return ERR_PTR(-ENOTSUPP);
3140
3141 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3142 GFP_KERNEL);
3143 if (!acl)
3144 return ERR_PTR(-ENOMEM);
3145
3146 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3147 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3148 i++;
3149 }
3150
3151 acl->n_acl_entries = n_entries;
3152 acl->acl_policy = acl_policy;
3153
3154 return acl;
3155 }
3156
3157 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3158 {
3159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3160 struct net_device *dev = info->user_ptr[1];
3161 struct cfg80211_acl_data *acl;
3162 int err;
3163
3164 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3165 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3166 return -EOPNOTSUPP;
3167
3168 if (!dev->ieee80211_ptr->beacon_interval)
3169 return -EINVAL;
3170
3171 acl = parse_acl_data(&rdev->wiphy, info);
3172 if (IS_ERR(acl))
3173 return PTR_ERR(acl);
3174
3175 err = rdev_set_mac_acl(rdev, dev, acl);
3176
3177 kfree(acl);
3178
3179 return err;
3180 }
3181
3182 static int nl80211_parse_beacon(struct nlattr *attrs[],
3183 struct cfg80211_beacon_data *bcn)
3184 {
3185 bool haveinfo = false;
3186
3187 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3188 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3189 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3190 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3191 return -EINVAL;
3192
3193 memset(bcn, 0, sizeof(*bcn));
3194
3195 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3196 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3197 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3198 if (!bcn->head_len)
3199 return -EINVAL;
3200 haveinfo = true;
3201 }
3202
3203 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3204 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3205 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3206 haveinfo = true;
3207 }
3208
3209 if (!haveinfo)
3210 return -EINVAL;
3211
3212 if (attrs[NL80211_ATTR_IE]) {
3213 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3214 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3215 }
3216
3217 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3218 bcn->proberesp_ies =
3219 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3220 bcn->proberesp_ies_len =
3221 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3222 }
3223
3224 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3225 bcn->assocresp_ies =
3226 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3227 bcn->assocresp_ies_len =
3228 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3229 }
3230
3231 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3232 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3233 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3234 }
3235
3236 return 0;
3237 }
3238
3239 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3240 struct cfg80211_ap_settings *params)
3241 {
3242 struct wireless_dev *wdev;
3243 bool ret = false;
3244
3245 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3246 if (wdev->iftype != NL80211_IFTYPE_AP &&
3247 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3248 continue;
3249
3250 if (!wdev->preset_chandef.chan)
3251 continue;
3252
3253 params->chandef = wdev->preset_chandef;
3254 ret = true;
3255 break;
3256 }
3257
3258 return ret;
3259 }
3260
3261 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3262 enum nl80211_auth_type auth_type,
3263 enum nl80211_commands cmd)
3264 {
3265 if (auth_type > NL80211_AUTHTYPE_MAX)
3266 return false;
3267
3268 switch (cmd) {
3269 case NL80211_CMD_AUTHENTICATE:
3270 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3271 auth_type == NL80211_AUTHTYPE_SAE)
3272 return false;
3273 return true;
3274 case NL80211_CMD_CONNECT:
3275 case NL80211_CMD_START_AP:
3276 /* SAE not supported yet */
3277 if (auth_type == NL80211_AUTHTYPE_SAE)
3278 return false;
3279 return true;
3280 default:
3281 return false;
3282 }
3283 }
3284
3285 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3286 {
3287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3288 struct net_device *dev = info->user_ptr[1];
3289 struct wireless_dev *wdev = dev->ieee80211_ptr;
3290 struct cfg80211_ap_settings params;
3291 int err;
3292
3293 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3294 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3295 return -EOPNOTSUPP;
3296
3297 if (!rdev->ops->start_ap)
3298 return -EOPNOTSUPP;
3299
3300 if (wdev->beacon_interval)
3301 return -EALREADY;
3302
3303 memset(&params, 0, sizeof(params));
3304
3305 /* these are required for START_AP */
3306 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3307 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3308 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3309 return -EINVAL;
3310
3311 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3312 if (err)
3313 return err;
3314
3315 params.beacon_interval =
3316 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3317 params.dtim_period =
3318 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3319
3320 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3321 if (err)
3322 return err;
3323
3324 /*
3325 * In theory, some of these attributes should be required here
3326 * but since they were not used when the command was originally
3327 * added, keep them optional for old user space programs to let
3328 * them continue to work with drivers that do not need the
3329 * additional information -- drivers must check!
3330 */
3331 if (info->attrs[NL80211_ATTR_SSID]) {
3332 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3333 params.ssid_len =
3334 nla_len(info->attrs[NL80211_ATTR_SSID]);
3335 if (params.ssid_len == 0 ||
3336 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3337 return -EINVAL;
3338 }
3339
3340 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3341 params.hidden_ssid = nla_get_u32(
3342 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3343 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3344 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3345 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3346 return -EINVAL;
3347 }
3348
3349 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3350
3351 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3352 params.auth_type = nla_get_u32(
3353 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3354 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3355 NL80211_CMD_START_AP))
3356 return -EINVAL;
3357 } else
3358 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3359
3360 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3361 NL80211_MAX_NR_CIPHER_SUITES);
3362 if (err)
3363 return err;
3364
3365 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3366 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3367 return -EOPNOTSUPP;
3368 params.inactivity_timeout = nla_get_u16(
3369 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3370 }
3371
3372 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3373 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3374 return -EINVAL;
3375 params.p2p_ctwindow =
3376 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3377 if (params.p2p_ctwindow > 127)
3378 return -EINVAL;
3379 if (params.p2p_ctwindow != 0 &&
3380 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3381 return -EINVAL;
3382 }
3383
3384 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3385 u8 tmp;
3386
3387 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3388 return -EINVAL;
3389 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3390 if (tmp > 1)
3391 return -EINVAL;
3392 params.p2p_opp_ps = tmp;
3393 if (params.p2p_opp_ps != 0 &&
3394 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3395 return -EINVAL;
3396 }
3397
3398 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3399 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3400 if (err)
3401 return err;
3402 } else if (wdev->preset_chandef.chan) {
3403 params.chandef = wdev->preset_chandef;
3404 } else if (!nl80211_get_ap_channel(rdev, &params))
3405 return -EINVAL;
3406
3407 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3408 wdev->iftype))
3409 return -EINVAL;
3410
3411 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3412 params.acl = parse_acl_data(&rdev->wiphy, info);
3413 if (IS_ERR(params.acl))
3414 return PTR_ERR(params.acl);
3415 }
3416
3417 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3418 params.smps_mode =
3419 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3420 switch (params.smps_mode) {
3421 case NL80211_SMPS_OFF:
3422 break;
3423 case NL80211_SMPS_STATIC:
3424 if (!(rdev->wiphy.features &
3425 NL80211_FEATURE_STATIC_SMPS))
3426 return -EINVAL;
3427 break;
3428 case NL80211_SMPS_DYNAMIC:
3429 if (!(rdev->wiphy.features &
3430 NL80211_FEATURE_DYNAMIC_SMPS))
3431 return -EINVAL;
3432 break;
3433 default:
3434 return -EINVAL;
3435 }
3436 } else {
3437 params.smps_mode = NL80211_SMPS_OFF;
3438 }
3439
3440 wdev_lock(wdev);
3441 err = rdev_start_ap(rdev, dev, &params);
3442 if (!err) {
3443 wdev->preset_chandef = params.chandef;
3444 wdev->beacon_interval = params.beacon_interval;
3445 wdev->chandef = params.chandef;
3446 wdev->ssid_len = params.ssid_len;
3447 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3448 }
3449 wdev_unlock(wdev);
3450
3451 kfree(params.acl);
3452
3453 return err;
3454 }
3455
3456 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3457 {
3458 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3459 struct net_device *dev = info->user_ptr[1];
3460 struct wireless_dev *wdev = dev->ieee80211_ptr;
3461 struct cfg80211_beacon_data params;
3462 int err;
3463
3464 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3465 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3466 return -EOPNOTSUPP;
3467
3468 if (!rdev->ops->change_beacon)
3469 return -EOPNOTSUPP;
3470
3471 if (!wdev->beacon_interval)
3472 return -EINVAL;
3473
3474 err = nl80211_parse_beacon(info->attrs, &params);
3475 if (err)
3476 return err;
3477
3478 wdev_lock(wdev);
3479 err = rdev_change_beacon(rdev, dev, &params);
3480 wdev_unlock(wdev);
3481
3482 return err;
3483 }
3484
3485 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3486 {
3487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3488 struct net_device *dev = info->user_ptr[1];
3489
3490 return cfg80211_stop_ap(rdev, dev, false);
3491 }
3492
3493 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3494 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3495 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3496 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3497 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3498 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3499 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3500 };
3501
3502 static int parse_station_flags(struct genl_info *info,
3503 enum nl80211_iftype iftype,
3504 struct station_parameters *params)
3505 {
3506 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3507 struct nlattr *nla;
3508 int flag;
3509
3510 /*
3511 * Try parsing the new attribute first so userspace
3512 * can specify both for older kernels.
3513 */
3514 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3515 if (nla) {
3516 struct nl80211_sta_flag_update *sta_flags;
3517
3518 sta_flags = nla_data(nla);
3519 params->sta_flags_mask = sta_flags->mask;
3520 params->sta_flags_set = sta_flags->set;
3521 params->sta_flags_set &= params->sta_flags_mask;
3522 if ((params->sta_flags_mask |
3523 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3524 return -EINVAL;
3525 return 0;
3526 }
3527
3528 /* if present, parse the old attribute */
3529
3530 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3531 if (!nla)
3532 return 0;
3533
3534 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3535 nla, sta_flags_policy))
3536 return -EINVAL;
3537
3538 /*
3539 * Only allow certain flags for interface types so that
3540 * other attributes are silently ignored. Remember that
3541 * this is backward compatibility code with old userspace
3542 * and shouldn't be hit in other cases anyway.
3543 */
3544 switch (iftype) {
3545 case NL80211_IFTYPE_AP:
3546 case NL80211_IFTYPE_AP_VLAN:
3547 case NL80211_IFTYPE_P2P_GO:
3548 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3549 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3550 BIT(NL80211_STA_FLAG_WME) |
3551 BIT(NL80211_STA_FLAG_MFP);
3552 break;
3553 case NL80211_IFTYPE_P2P_CLIENT:
3554 case NL80211_IFTYPE_STATION:
3555 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3556 BIT(NL80211_STA_FLAG_TDLS_PEER);
3557 break;
3558 case NL80211_IFTYPE_MESH_POINT:
3559 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3560 BIT(NL80211_STA_FLAG_MFP) |
3561 BIT(NL80211_STA_FLAG_AUTHORIZED);
3562 default:
3563 return -EINVAL;
3564 }
3565
3566 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3567 if (flags[flag]) {
3568 params->sta_flags_set |= (1<<flag);
3569
3570 /* no longer support new API additions in old API */
3571 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3572 return -EINVAL;
3573 }
3574 }
3575
3576 return 0;
3577 }
3578
3579 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3580 int attr)
3581 {
3582 struct nlattr *rate;
3583 u32 bitrate;
3584 u16 bitrate_compat;
3585 enum nl80211_attrs rate_flg;
3586
3587 rate = nla_nest_start(msg, attr);
3588 if (!rate)
3589 return false;
3590
3591 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3592 bitrate = cfg80211_calculate_bitrate(info);
3593 /* report 16-bit bitrate only if we can */
3594 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3595 if (bitrate > 0 &&
3596 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3597 return false;
3598 if (bitrate_compat > 0 &&
3599 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3600 return false;
3601
3602 switch (info->bw) {
3603 case RATE_INFO_BW_5:
3604 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3605 break;
3606 case RATE_INFO_BW_10:
3607 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3608 break;
3609 default:
3610 WARN_ON(1);
3611 /* fall through */
3612 case RATE_INFO_BW_20:
3613 rate_flg = 0;
3614 break;
3615 case RATE_INFO_BW_40:
3616 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3617 break;
3618 case RATE_INFO_BW_80:
3619 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3620 break;
3621 case RATE_INFO_BW_160:
3622 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3623 break;
3624 }
3625
3626 if (rate_flg && nla_put_flag(msg, rate_flg))
3627 return false;
3628
3629 if (info->flags & RATE_INFO_FLAGS_MCS) {
3630 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3631 return false;
3632 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3633 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3634 return false;
3635 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3636 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3637 return false;
3638 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3639 return false;
3640 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3641 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3642 return false;
3643 }
3644
3645 nla_nest_end(msg, rate);
3646 return true;
3647 }
3648
3649 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3650 int id)
3651 {
3652 void *attr;
3653 int i = 0;
3654
3655 if (!mask)
3656 return true;
3657
3658 attr = nla_nest_start(msg, id);
3659 if (!attr)
3660 return false;
3661
3662 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3663 if (!(mask & BIT(i)))
3664 continue;
3665
3666 if (nla_put_u8(msg, i, signal[i]))
3667 return false;
3668 }
3669
3670 nla_nest_end(msg, attr);
3671
3672 return true;
3673 }
3674
3675 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3676 u32 seq, int flags,
3677 struct cfg80211_registered_device *rdev,
3678 struct net_device *dev,
3679 const u8 *mac_addr, struct station_info *sinfo)
3680 {
3681 void *hdr;
3682 struct nlattr *sinfoattr, *bss_param;
3683
3684 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3685 if (!hdr)
3686 return -1;
3687
3688 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3689 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3690 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3691 goto nla_put_failure;
3692
3693 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3694 if (!sinfoattr)
3695 goto nla_put_failure;
3696
3697 #define PUT_SINFO(attr, memb, type) do { \
3698 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3699 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3700 sinfo->memb)) \
3701 goto nla_put_failure; \
3702 } while (0)
3703
3704 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3705 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3706
3707 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3708 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3709 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3710 (u32)sinfo->rx_bytes))
3711 goto nla_put_failure;
3712
3713 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3714 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3715 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3716 (u32)sinfo->tx_bytes))
3717 goto nla_put_failure;
3718
3719 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3720 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3721 PUT_SINFO(LLID, llid, u16);
3722 PUT_SINFO(PLID, plid, u16);
3723 PUT_SINFO(PLINK_STATE, plink_state, u8);
3724
3725 switch (rdev->wiphy.signal_type) {
3726 case CFG80211_SIGNAL_TYPE_MBM:
3727 PUT_SINFO(SIGNAL, signal, u8);
3728 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3729 break;
3730 default:
3731 break;
3732 }
3733 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3734 if (!nl80211_put_signal(msg, sinfo->chains,
3735 sinfo->chain_signal,
3736 NL80211_STA_INFO_CHAIN_SIGNAL))
3737 goto nla_put_failure;
3738 }
3739 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3740 if (!nl80211_put_signal(msg, sinfo->chains,
3741 sinfo->chain_signal_avg,
3742 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3743 goto nla_put_failure;
3744 }
3745 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3746 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3747 NL80211_STA_INFO_TX_BITRATE))
3748 goto nla_put_failure;
3749 }
3750 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3751 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3752 NL80211_STA_INFO_RX_BITRATE))
3753 goto nla_put_failure;
3754 }
3755
3756 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3757 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3758 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3759 PUT_SINFO(TX_FAILED, tx_failed, u32);
3760 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3761 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3762 PUT_SINFO(LOCAL_PM, local_pm, u32);
3763 PUT_SINFO(PEER_PM, peer_pm, u32);
3764 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3765
3766 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3767 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3768 if (!bss_param)
3769 goto nla_put_failure;
3770
3771 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3772 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3773 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3774 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3775 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3776 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3777 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3778 sinfo->bss_param.dtim_period) ||
3779 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3780 sinfo->bss_param.beacon_interval))
3781 goto nla_put_failure;
3782
3783 nla_nest_end(msg, bss_param);
3784 }
3785 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3786 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3787 sizeof(struct nl80211_sta_flag_update),
3788 &sinfo->sta_flags))
3789 goto nla_put_failure;
3790
3791 PUT_SINFO(T_OFFSET, t_offset, u64);
3792 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3793 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3794 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3795
3796 #undef PUT_SINFO
3797
3798 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3799 struct nlattr *tidsattr;
3800 int tid;
3801
3802 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3803 if (!tidsattr)
3804 goto nla_put_failure;
3805
3806 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3807 struct cfg80211_tid_stats *tidstats;
3808 struct nlattr *tidattr;
3809
3810 tidstats = &sinfo->pertid[tid];
3811
3812 if (!tidstats->filled)
3813 continue;
3814
3815 tidattr = nla_nest_start(msg, tid + 1);
3816 if (!tidattr)
3817 goto nla_put_failure;
3818
3819 #define PUT_TIDVAL(attr, memb, type) do { \
3820 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3821 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3822 tidstats->memb)) \
3823 goto nla_put_failure; \
3824 } while (0)
3825
3826 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3827 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3828 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3829 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3830
3831 #undef PUT_TIDVAL
3832 nla_nest_end(msg, tidattr);
3833 }
3834
3835 nla_nest_end(msg, tidsattr);
3836 }
3837
3838 nla_nest_end(msg, sinfoattr);
3839
3840 if (sinfo->assoc_req_ies_len &&
3841 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3842 sinfo->assoc_req_ies))
3843 goto nla_put_failure;
3844
3845 genlmsg_end(msg, hdr);
3846 return 0;
3847
3848 nla_put_failure:
3849 genlmsg_cancel(msg, hdr);
3850 return -EMSGSIZE;
3851 }
3852
3853 static int nl80211_dump_station(struct sk_buff *skb,
3854 struct netlink_callback *cb)
3855 {
3856 struct station_info sinfo;
3857 struct cfg80211_registered_device *rdev;
3858 struct wireless_dev *wdev;
3859 u8 mac_addr[ETH_ALEN];
3860 int sta_idx = cb->args[2];
3861 int err;
3862
3863 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3864 if (err)
3865 return err;
3866
3867 if (!wdev->netdev) {
3868 err = -EINVAL;
3869 goto out_err;
3870 }
3871
3872 if (!rdev->ops->dump_station) {
3873 err = -EOPNOTSUPP;
3874 goto out_err;
3875 }
3876
3877 while (1) {
3878 memset(&sinfo, 0, sizeof(sinfo));
3879 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3880 mac_addr, &sinfo);
3881 if (err == -ENOENT)
3882 break;
3883 if (err)
3884 goto out_err;
3885
3886 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3887 NETLINK_CB(cb->skb).portid,
3888 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3889 rdev, wdev->netdev, mac_addr,
3890 &sinfo) < 0)
3891 goto out;
3892
3893 sta_idx++;
3894 }
3895
3896
3897 out:
3898 cb->args[2] = sta_idx;
3899 err = skb->len;
3900 out_err:
3901 nl80211_finish_wdev_dump(rdev);
3902
3903 return err;
3904 }
3905
3906 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3907 {
3908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3909 struct net_device *dev = info->user_ptr[1];
3910 struct station_info sinfo;
3911 struct sk_buff *msg;
3912 u8 *mac_addr = NULL;
3913 int err;
3914
3915 memset(&sinfo, 0, sizeof(sinfo));
3916
3917 if (!info->attrs[NL80211_ATTR_MAC])
3918 return -EINVAL;
3919
3920 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3921
3922 if (!rdev->ops->get_station)
3923 return -EOPNOTSUPP;
3924
3925 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3926 if (err)
3927 return err;
3928
3929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3930 if (!msg)
3931 return -ENOMEM;
3932
3933 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3934 info->snd_portid, info->snd_seq, 0,
3935 rdev, dev, mac_addr, &sinfo) < 0) {
3936 nlmsg_free(msg);
3937 return -ENOBUFS;
3938 }
3939
3940 return genlmsg_reply(msg, info);
3941 }
3942
3943 int cfg80211_check_station_change(struct wiphy *wiphy,
3944 struct station_parameters *params,
3945 enum cfg80211_station_type statype)
3946 {
3947 if (params->listen_interval != -1)
3948 return -EINVAL;
3949 if (params->aid &&
3950 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3951 return -EINVAL;
3952
3953 /* When you run into this, adjust the code below for the new flag */
3954 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3955
3956 switch (statype) {
3957 case CFG80211_STA_MESH_PEER_KERNEL:
3958 case CFG80211_STA_MESH_PEER_USER:
3959 /*
3960 * No ignoring the TDLS flag here -- the userspace mesh
3961 * code doesn't have the bug of including TDLS in the
3962 * mask everywhere.
3963 */
3964 if (params->sta_flags_mask &
3965 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3966 BIT(NL80211_STA_FLAG_MFP) |
3967 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3968 return -EINVAL;
3969 break;
3970 case CFG80211_STA_TDLS_PEER_SETUP:
3971 case CFG80211_STA_TDLS_PEER_ACTIVE:
3972 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3973 return -EINVAL;
3974 /* ignore since it can't change */
3975 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3976 break;
3977 default:
3978 /* disallow mesh-specific things */
3979 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3980 return -EINVAL;
3981 if (params->local_pm)
3982 return -EINVAL;
3983 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3984 return -EINVAL;
3985 }
3986
3987 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3988 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3989 /* TDLS can't be set, ... */
3990 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3991 return -EINVAL;
3992 /*
3993 * ... but don't bother the driver with it. This works around
3994 * a hostapd/wpa_supplicant issue -- it always includes the
3995 * TLDS_PEER flag in the mask even for AP mode.
3996 */
3997 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3998 }
3999
4000 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
4001 /* reject other things that can't change */
4002 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4003 return -EINVAL;
4004 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4005 return -EINVAL;
4006 if (params->supported_rates)
4007 return -EINVAL;
4008 if (params->ext_capab || params->ht_capa || params->vht_capa)
4009 return -EINVAL;
4010 }
4011
4012 if (statype != CFG80211_STA_AP_CLIENT) {
4013 if (params->vlan)
4014 return -EINVAL;
4015 }
4016
4017 switch (statype) {
4018 case CFG80211_STA_AP_MLME_CLIENT:
4019 /* Use this only for authorizing/unauthorizing a station */
4020 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4021 return -EOPNOTSUPP;
4022 break;
4023 case CFG80211_STA_AP_CLIENT:
4024 /* accept only the listed bits */
4025 if (params->sta_flags_mask &
4026 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4027 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4028 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4029 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4030 BIT(NL80211_STA_FLAG_WME) |
4031 BIT(NL80211_STA_FLAG_MFP)))
4032 return -EINVAL;
4033
4034 /* but authenticated/associated only if driver handles it */
4035 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4036 params->sta_flags_mask &
4037 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4038 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4039 return -EINVAL;
4040 break;
4041 case CFG80211_STA_IBSS:
4042 case CFG80211_STA_AP_STA:
4043 /* reject any changes other than AUTHORIZED */
4044 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4045 return -EINVAL;
4046 break;
4047 case CFG80211_STA_TDLS_PEER_SETUP:
4048 /* reject any changes other than AUTHORIZED or WME */
4049 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4050 BIT(NL80211_STA_FLAG_WME)))
4051 return -EINVAL;
4052 /* force (at least) rates when authorizing */
4053 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4054 !params->supported_rates)
4055 return -EINVAL;
4056 break;
4057 case CFG80211_STA_TDLS_PEER_ACTIVE:
4058 /* reject any changes */
4059 return -EINVAL;
4060 case CFG80211_STA_MESH_PEER_KERNEL:
4061 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4062 return -EINVAL;
4063 break;
4064 case CFG80211_STA_MESH_PEER_USER:
4065 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4066 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4067 return -EINVAL;
4068 break;
4069 }
4070
4071 return 0;
4072 }
4073 EXPORT_SYMBOL(cfg80211_check_station_change);
4074
4075 /*
4076 * Get vlan interface making sure it is running and on the right wiphy.
4077 */
4078 static struct net_device *get_vlan(struct genl_info *info,
4079 struct cfg80211_registered_device *rdev)
4080 {
4081 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4082 struct net_device *v;
4083 int ret;
4084
4085 if (!vlanattr)
4086 return NULL;
4087
4088 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4089 if (!v)
4090 return ERR_PTR(-ENODEV);
4091
4092 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4093 ret = -EINVAL;
4094 goto error;
4095 }
4096
4097 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4098 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4099 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4100 ret = -EINVAL;
4101 goto error;
4102 }
4103
4104 if (!netif_running(v)) {
4105 ret = -ENETDOWN;
4106 goto error;
4107 }
4108
4109 return v;
4110 error:
4111 dev_put(v);
4112 return ERR_PTR(ret);
4113 }
4114
4115 static const struct nla_policy
4116 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4117 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4118 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4119 };
4120
4121 static int nl80211_parse_sta_wme(struct genl_info *info,
4122 struct station_parameters *params)
4123 {
4124 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4125 struct nlattr *nla;
4126 int err;
4127
4128 /* parse WME attributes if present */
4129 if (!info->attrs[NL80211_ATTR_STA_WME])
4130 return 0;
4131
4132 nla = info->attrs[NL80211_ATTR_STA_WME];
4133 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4134 nl80211_sta_wme_policy);
4135 if (err)
4136 return err;
4137
4138 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4139 params->uapsd_queues = nla_get_u8(
4140 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4141 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4142 return -EINVAL;
4143
4144 if (tb[NL80211_STA_WME_MAX_SP])
4145 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4146
4147 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4148 return -EINVAL;
4149
4150 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4151
4152 return 0;
4153 }
4154
4155 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4156 struct station_parameters *params)
4157 {
4158 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4159 params->supported_channels =
4160 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4161 params->supported_channels_len =
4162 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4163 /*
4164 * Need to include at least one (first channel, number of
4165 * channels) tuple for each subband, and must have proper
4166 * tuples for the rest of the data as well.
4167 */
4168 if (params->supported_channels_len < 2)
4169 return -EINVAL;
4170 if (params->supported_channels_len % 2)
4171 return -EINVAL;
4172 }
4173
4174 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4175 params->supported_oper_classes =
4176 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4177 params->supported_oper_classes_len =
4178 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4179 /*
4180 * The value of the Length field of the Supported Operating
4181 * Classes element is between 2 and 253.
4182 */
4183 if (params->supported_oper_classes_len < 2 ||
4184 params->supported_oper_classes_len > 253)
4185 return -EINVAL;
4186 }
4187 return 0;
4188 }
4189
4190 static int nl80211_set_station_tdls(struct genl_info *info,
4191 struct station_parameters *params)
4192 {
4193 int err;
4194 /* Dummy STA entry gets updated once the peer capabilities are known */
4195 if (info->attrs[NL80211_ATTR_PEER_AID])
4196 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4197 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4198 params->ht_capa =
4199 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4200 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4201 params->vht_capa =
4202 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4203
4204 err = nl80211_parse_sta_channel_info(info, params);
4205 if (err)
4206 return err;
4207
4208 return nl80211_parse_sta_wme(info, params);
4209 }
4210
4211 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4212 {
4213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4214 struct net_device *dev = info->user_ptr[1];
4215 struct station_parameters params;
4216 u8 *mac_addr;
4217 int err;
4218
4219 memset(&params, 0, sizeof(params));
4220
4221 params.listen_interval = -1;
4222
4223 if (!rdev->ops->change_station)
4224 return -EOPNOTSUPP;
4225
4226 if (info->attrs[NL80211_ATTR_STA_AID])
4227 return -EINVAL;
4228
4229 if (!info->attrs[NL80211_ATTR_MAC])
4230 return -EINVAL;
4231
4232 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4233
4234 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4235 params.supported_rates =
4236 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4237 params.supported_rates_len =
4238 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4239 }
4240
4241 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4242 params.capability =
4243 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4244 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4245 }
4246
4247 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4248 params.ext_capab =
4249 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4250 params.ext_capab_len =
4251 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4252 }
4253
4254 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4255 return -EINVAL;
4256
4257 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4258 return -EINVAL;
4259
4260 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4261 params.plink_action =
4262 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4263 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4264 return -EINVAL;
4265 }
4266
4267 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4268 params.plink_state =
4269 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4270 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4271 return -EINVAL;
4272 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4273 }
4274
4275 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4276 enum nl80211_mesh_power_mode pm = nla_get_u32(
4277 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4278
4279 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4280 pm > NL80211_MESH_POWER_MAX)
4281 return -EINVAL;
4282
4283 params.local_pm = pm;
4284 }
4285
4286 /* Include parameters for TDLS peer (will check later) */
4287 err = nl80211_set_station_tdls(info, &params);
4288 if (err)
4289 return err;
4290
4291 params.vlan = get_vlan(info, rdev);
4292 if (IS_ERR(params.vlan))
4293 return PTR_ERR(params.vlan);
4294
4295 switch (dev->ieee80211_ptr->iftype) {
4296 case NL80211_IFTYPE_AP:
4297 case NL80211_IFTYPE_AP_VLAN:
4298 case NL80211_IFTYPE_P2P_GO:
4299 case NL80211_IFTYPE_P2P_CLIENT:
4300 case NL80211_IFTYPE_STATION:
4301 case NL80211_IFTYPE_ADHOC:
4302 case NL80211_IFTYPE_MESH_POINT:
4303 break;
4304 default:
4305 err = -EOPNOTSUPP;
4306 goto out_put_vlan;
4307 }
4308
4309 /* driver will call cfg80211_check_station_change() */
4310 err = rdev_change_station(rdev, dev, mac_addr, &params);
4311
4312 out_put_vlan:
4313 if (params.vlan)
4314 dev_put(params.vlan);
4315
4316 return err;
4317 }
4318
4319 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4320 {
4321 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4322 int err;
4323 struct net_device *dev = info->user_ptr[1];
4324 struct station_parameters params;
4325 u8 *mac_addr = NULL;
4326
4327 memset(&params, 0, sizeof(params));
4328
4329 if (!rdev->ops->add_station)
4330 return -EOPNOTSUPP;
4331
4332 if (!info->attrs[NL80211_ATTR_MAC])
4333 return -EINVAL;
4334
4335 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4336 return -EINVAL;
4337
4338 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4339 return -EINVAL;
4340
4341 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4342 !info->attrs[NL80211_ATTR_PEER_AID])
4343 return -EINVAL;
4344
4345 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4346 params.supported_rates =
4347 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4348 params.supported_rates_len =
4349 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4350 params.listen_interval =
4351 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4352
4353 if (info->attrs[NL80211_ATTR_PEER_AID])
4354 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4355 else
4356 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4357 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4358 return -EINVAL;
4359
4360 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4361 params.capability =
4362 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4363 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4364 }
4365
4366 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4367 params.ext_capab =
4368 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4369 params.ext_capab_len =
4370 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4371 }
4372
4373 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4374 params.ht_capa =
4375 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4376
4377 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4378 params.vht_capa =
4379 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4380
4381 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4382 params.opmode_notif_used = true;
4383 params.opmode_notif =
4384 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4385 }
4386
4387 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4388 params.plink_action =
4389 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4390 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4391 return -EINVAL;
4392 }
4393
4394 err = nl80211_parse_sta_channel_info(info, &params);
4395 if (err)
4396 return err;
4397
4398 err = nl80211_parse_sta_wme(info, &params);
4399 if (err)
4400 return err;
4401
4402 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4403 return -EINVAL;
4404
4405 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4406 * as userspace might just pass through the capabilities from the IEs
4407 * directly, rather than enforcing this restriction and returning an
4408 * error in this case.
4409 */
4410 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4411 params.ht_capa = NULL;
4412 params.vht_capa = NULL;
4413 }
4414
4415 /* When you run into this, adjust the code below for the new flag */
4416 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4417
4418 switch (dev->ieee80211_ptr->iftype) {
4419 case NL80211_IFTYPE_AP:
4420 case NL80211_IFTYPE_AP_VLAN:
4421 case NL80211_IFTYPE_P2P_GO:
4422 /* ignore WME attributes if iface/sta is not capable */
4423 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4424 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4425 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4426
4427 /* TDLS peers cannot be added */
4428 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4429 info->attrs[NL80211_ATTR_PEER_AID])
4430 return -EINVAL;
4431 /* but don't bother the driver with it */
4432 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4433
4434 /* allow authenticated/associated only if driver handles it */
4435 if (!(rdev->wiphy.features &
4436 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4437 params.sta_flags_mask &
4438 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4439 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4440 return -EINVAL;
4441
4442 /* must be last in here for error handling */
4443 params.vlan = get_vlan(info, rdev);
4444 if (IS_ERR(params.vlan))
4445 return PTR_ERR(params.vlan);
4446 break;
4447 case NL80211_IFTYPE_MESH_POINT:
4448 /* ignore uAPSD data */
4449 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4450
4451 /* associated is disallowed */
4452 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4453 return -EINVAL;
4454 /* TDLS peers cannot be added */
4455 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4456 info->attrs[NL80211_ATTR_PEER_AID])
4457 return -EINVAL;
4458 break;
4459 case NL80211_IFTYPE_STATION:
4460 case NL80211_IFTYPE_P2P_CLIENT:
4461 /* ignore uAPSD data */
4462 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4463
4464 /* these are disallowed */
4465 if (params.sta_flags_mask &
4466 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4467 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4468 return -EINVAL;
4469 /* Only TDLS peers can be added */
4470 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4471 return -EINVAL;
4472 /* Can only add if TDLS ... */
4473 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4474 return -EOPNOTSUPP;
4475 /* ... with external setup is supported */
4476 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4477 return -EOPNOTSUPP;
4478 /*
4479 * Older wpa_supplicant versions always mark the TDLS peer
4480 * as authorized, but it shouldn't yet be.
4481 */
4482 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4483 break;
4484 default:
4485 return -EOPNOTSUPP;
4486 }
4487
4488 /* be aware of params.vlan when changing code here */
4489
4490 err = rdev_add_station(rdev, dev, mac_addr, &params);
4491
4492 if (params.vlan)
4493 dev_put(params.vlan);
4494 return err;
4495 }
4496
4497 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4498 {
4499 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4500 struct net_device *dev = info->user_ptr[1];
4501 struct station_del_parameters params;
4502
4503 memset(&params, 0, sizeof(params));
4504
4505 if (info->attrs[NL80211_ATTR_MAC])
4506 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4507
4508 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4509 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4510 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4511 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4512 return -EINVAL;
4513
4514 if (!rdev->ops->del_station)
4515 return -EOPNOTSUPP;
4516
4517 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4518 params.subtype =
4519 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4520 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4521 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4522 return -EINVAL;
4523 } else {
4524 /* Default to Deauthentication frame */
4525 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4526 }
4527
4528 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4529 params.reason_code =
4530 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4531 if (params.reason_code == 0)
4532 return -EINVAL; /* 0 is reserved */
4533 } else {
4534 /* Default to reason code 2 */
4535 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4536 }
4537
4538 return rdev_del_station(rdev, dev, &params);
4539 }
4540
4541 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4542 int flags, struct net_device *dev,
4543 u8 *dst, u8 *next_hop,
4544 struct mpath_info *pinfo)
4545 {
4546 void *hdr;
4547 struct nlattr *pinfoattr;
4548
4549 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4550 if (!hdr)
4551 return -1;
4552
4553 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4554 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4555 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4556 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4557 goto nla_put_failure;
4558
4559 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4560 if (!pinfoattr)
4561 goto nla_put_failure;
4562 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4563 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4564 pinfo->frame_qlen))
4565 goto nla_put_failure;
4566 if (((pinfo->filled & MPATH_INFO_SN) &&
4567 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4568 ((pinfo->filled & MPATH_INFO_METRIC) &&
4569 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4570 pinfo->metric)) ||
4571 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4572 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4573 pinfo->exptime)) ||
4574 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4575 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4576 pinfo->flags)) ||
4577 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4578 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4579 pinfo->discovery_timeout)) ||
4580 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4581 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4582 pinfo->discovery_retries)))
4583 goto nla_put_failure;
4584
4585 nla_nest_end(msg, pinfoattr);
4586
4587 genlmsg_end(msg, hdr);
4588 return 0;
4589
4590 nla_put_failure:
4591 genlmsg_cancel(msg, hdr);
4592 return -EMSGSIZE;
4593 }
4594
4595 static int nl80211_dump_mpath(struct sk_buff *skb,
4596 struct netlink_callback *cb)
4597 {
4598 struct mpath_info pinfo;
4599 struct cfg80211_registered_device *rdev;
4600 struct wireless_dev *wdev;
4601 u8 dst[ETH_ALEN];
4602 u8 next_hop[ETH_ALEN];
4603 int path_idx = cb->args[2];
4604 int err;
4605
4606 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4607 if (err)
4608 return err;
4609
4610 if (!rdev->ops->dump_mpath) {
4611 err = -EOPNOTSUPP;
4612 goto out_err;
4613 }
4614
4615 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4616 err = -EOPNOTSUPP;
4617 goto out_err;
4618 }
4619
4620 while (1) {
4621 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4622 next_hop, &pinfo);
4623 if (err == -ENOENT)
4624 break;
4625 if (err)
4626 goto out_err;
4627
4628 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4629 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4630 wdev->netdev, dst, next_hop,
4631 &pinfo) < 0)
4632 goto out;
4633
4634 path_idx++;
4635 }
4636
4637
4638 out:
4639 cb->args[2] = path_idx;
4640 err = skb->len;
4641 out_err:
4642 nl80211_finish_wdev_dump(rdev);
4643 return err;
4644 }
4645
4646 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4647 {
4648 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4649 int err;
4650 struct net_device *dev = info->user_ptr[1];
4651 struct mpath_info pinfo;
4652 struct sk_buff *msg;
4653 u8 *dst = NULL;
4654 u8 next_hop[ETH_ALEN];
4655
4656 memset(&pinfo, 0, sizeof(pinfo));
4657
4658 if (!info->attrs[NL80211_ATTR_MAC])
4659 return -EINVAL;
4660
4661 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4662
4663 if (!rdev->ops->get_mpath)
4664 return -EOPNOTSUPP;
4665
4666 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4667 return -EOPNOTSUPP;
4668
4669 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4670 if (err)
4671 return err;
4672
4673 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4674 if (!msg)
4675 return -ENOMEM;
4676
4677 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4678 dev, dst, next_hop, &pinfo) < 0) {
4679 nlmsg_free(msg);
4680 return -ENOBUFS;
4681 }
4682
4683 return genlmsg_reply(msg, info);
4684 }
4685
4686 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4687 {
4688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4689 struct net_device *dev = info->user_ptr[1];
4690 u8 *dst = NULL;
4691 u8 *next_hop = NULL;
4692
4693 if (!info->attrs[NL80211_ATTR_MAC])
4694 return -EINVAL;
4695
4696 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4697 return -EINVAL;
4698
4699 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4700 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4701
4702 if (!rdev->ops->change_mpath)
4703 return -EOPNOTSUPP;
4704
4705 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4706 return -EOPNOTSUPP;
4707
4708 return rdev_change_mpath(rdev, dev, dst, next_hop);
4709 }
4710
4711 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4712 {
4713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4714 struct net_device *dev = info->user_ptr[1];
4715 u8 *dst = NULL;
4716 u8 *next_hop = NULL;
4717
4718 if (!info->attrs[NL80211_ATTR_MAC])
4719 return -EINVAL;
4720
4721 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4722 return -EINVAL;
4723
4724 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4725 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4726
4727 if (!rdev->ops->add_mpath)
4728 return -EOPNOTSUPP;
4729
4730 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4731 return -EOPNOTSUPP;
4732
4733 return rdev_add_mpath(rdev, dev, dst, next_hop);
4734 }
4735
4736 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4737 {
4738 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4739 struct net_device *dev = info->user_ptr[1];
4740 u8 *dst = NULL;
4741
4742 if (info->attrs[NL80211_ATTR_MAC])
4743 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4744
4745 if (!rdev->ops->del_mpath)
4746 return -EOPNOTSUPP;
4747
4748 return rdev_del_mpath(rdev, dev, dst);
4749 }
4750
4751 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4752 {
4753 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4754 int err;
4755 struct net_device *dev = info->user_ptr[1];
4756 struct mpath_info pinfo;
4757 struct sk_buff *msg;
4758 u8 *dst = NULL;
4759 u8 mpp[ETH_ALEN];
4760
4761 memset(&pinfo, 0, sizeof(pinfo));
4762
4763 if (!info->attrs[NL80211_ATTR_MAC])
4764 return -EINVAL;
4765
4766 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4767
4768 if (!rdev->ops->get_mpp)
4769 return -EOPNOTSUPP;
4770
4771 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4772 return -EOPNOTSUPP;
4773
4774 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4775 if (err)
4776 return err;
4777
4778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4779 if (!msg)
4780 return -ENOMEM;
4781
4782 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4783 dev, dst, mpp, &pinfo) < 0) {
4784 nlmsg_free(msg);
4785 return -ENOBUFS;
4786 }
4787
4788 return genlmsg_reply(msg, info);
4789 }
4790
4791 static int nl80211_dump_mpp(struct sk_buff *skb,
4792 struct netlink_callback *cb)
4793 {
4794 struct mpath_info pinfo;
4795 struct cfg80211_registered_device *rdev;
4796 struct wireless_dev *wdev;
4797 u8 dst[ETH_ALEN];
4798 u8 mpp[ETH_ALEN];
4799 int path_idx = cb->args[2];
4800 int err;
4801
4802 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4803 if (err)
4804 return err;
4805
4806 if (!rdev->ops->dump_mpp) {
4807 err = -EOPNOTSUPP;
4808 goto out_err;
4809 }
4810
4811 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4812 err = -EOPNOTSUPP;
4813 goto out_err;
4814 }
4815
4816 while (1) {
4817 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4818 mpp, &pinfo);
4819 if (err == -ENOENT)
4820 break;
4821 if (err)
4822 goto out_err;
4823
4824 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4825 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4826 wdev->netdev, dst, mpp,
4827 &pinfo) < 0)
4828 goto out;
4829
4830 path_idx++;
4831 }
4832
4833 out:
4834 cb->args[2] = path_idx;
4835 err = skb->len;
4836 out_err:
4837 nl80211_finish_wdev_dump(rdev);
4838 return err;
4839 }
4840
4841 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4842 {
4843 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4844 struct net_device *dev = info->user_ptr[1];
4845 struct wireless_dev *wdev = dev->ieee80211_ptr;
4846 struct bss_parameters params;
4847 int err;
4848
4849 memset(&params, 0, sizeof(params));
4850 /* default to not changing parameters */
4851 params.use_cts_prot = -1;
4852 params.use_short_preamble = -1;
4853 params.use_short_slot_time = -1;
4854 params.ap_isolate = -1;
4855 params.ht_opmode = -1;
4856 params.p2p_ctwindow = -1;
4857 params.p2p_opp_ps = -1;
4858
4859 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4860 params.use_cts_prot =
4861 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4862 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4863 params.use_short_preamble =
4864 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4865 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4866 params.use_short_slot_time =
4867 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4868 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4869 params.basic_rates =
4870 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4871 params.basic_rates_len =
4872 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4873 }
4874 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4875 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4876 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4877 params.ht_opmode =
4878 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4879
4880 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4881 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4882 return -EINVAL;
4883 params.p2p_ctwindow =
4884 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4885 if (params.p2p_ctwindow < 0)
4886 return -EINVAL;
4887 if (params.p2p_ctwindow != 0 &&
4888 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4889 return -EINVAL;
4890 }
4891
4892 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4893 u8 tmp;
4894
4895 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4896 return -EINVAL;
4897 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4898 if (tmp > 1)
4899 return -EINVAL;
4900 params.p2p_opp_ps = tmp;
4901 if (params.p2p_opp_ps &&
4902 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4903 return -EINVAL;
4904 }
4905
4906 if (!rdev->ops->change_bss)
4907 return -EOPNOTSUPP;
4908
4909 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4910 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4911 return -EOPNOTSUPP;
4912
4913 wdev_lock(wdev);
4914 err = rdev_change_bss(rdev, dev, &params);
4915 wdev_unlock(wdev);
4916
4917 return err;
4918 }
4919
4920 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4921 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4922 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4923 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4924 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4925 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4926 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4927 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4928 };
4929
4930 static int parse_reg_rule(struct nlattr *tb[],
4931 struct ieee80211_reg_rule *reg_rule)
4932 {
4933 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4934 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4935
4936 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4937 return -EINVAL;
4938 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4939 return -EINVAL;
4940 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4941 return -EINVAL;
4942 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4943 return -EINVAL;
4944 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4945 return -EINVAL;
4946
4947 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4948
4949 freq_range->start_freq_khz =
4950 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4951 freq_range->end_freq_khz =
4952 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4953 freq_range->max_bandwidth_khz =
4954 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4955
4956 power_rule->max_eirp =
4957 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4958
4959 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4960 power_rule->max_antenna_gain =
4961 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4962
4963 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4964 reg_rule->dfs_cac_ms =
4965 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4966
4967 return 0;
4968 }
4969
4970 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4971 {
4972 char *data = NULL;
4973 bool is_indoor;
4974 enum nl80211_user_reg_hint_type user_reg_hint_type;
4975 u32 owner_nlportid;
4976
4977
4978 /*
4979 * You should only get this when cfg80211 hasn't yet initialized
4980 * completely when built-in to the kernel right between the time
4981 * window between nl80211_init() and regulatory_init(), if that is
4982 * even possible.
4983 */
4984 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4985 return -EINPROGRESS;
4986
4987 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4988 user_reg_hint_type =
4989 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4990 else
4991 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4992
4993 switch (user_reg_hint_type) {
4994 case NL80211_USER_REG_HINT_USER:
4995 case NL80211_USER_REG_HINT_CELL_BASE:
4996 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4997 return -EINVAL;
4998
4999 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5000 return regulatory_hint_user(data, user_reg_hint_type);
5001 case NL80211_USER_REG_HINT_INDOOR:
5002 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5003 owner_nlportid = info->snd_portid;
5004 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5005 } else {
5006 owner_nlportid = 0;
5007 is_indoor = true;
5008 }
5009
5010 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5011 default:
5012 return -EINVAL;
5013 }
5014 }
5015
5016 static int nl80211_get_mesh_config(struct sk_buff *skb,
5017 struct genl_info *info)
5018 {
5019 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5020 struct net_device *dev = info->user_ptr[1];
5021 struct wireless_dev *wdev = dev->ieee80211_ptr;
5022 struct mesh_config cur_params;
5023 int err = 0;
5024 void *hdr;
5025 struct nlattr *pinfoattr;
5026 struct sk_buff *msg;
5027
5028 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5029 return -EOPNOTSUPP;
5030
5031 if (!rdev->ops->get_mesh_config)
5032 return -EOPNOTSUPP;
5033
5034 wdev_lock(wdev);
5035 /* If not connected, get default parameters */
5036 if (!wdev->mesh_id_len)
5037 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5038 else
5039 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5040 wdev_unlock(wdev);
5041
5042 if (err)
5043 return err;
5044
5045 /* Draw up a netlink message to send back */
5046 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5047 if (!msg)
5048 return -ENOMEM;
5049 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5050 NL80211_CMD_GET_MESH_CONFIG);
5051 if (!hdr)
5052 goto out;
5053 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5054 if (!pinfoattr)
5055 goto nla_put_failure;
5056 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5057 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5058 cur_params.dot11MeshRetryTimeout) ||
5059 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5060 cur_params.dot11MeshConfirmTimeout) ||
5061 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5062 cur_params.dot11MeshHoldingTimeout) ||
5063 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5064 cur_params.dot11MeshMaxPeerLinks) ||
5065 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5066 cur_params.dot11MeshMaxRetries) ||
5067 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5068 cur_params.dot11MeshTTL) ||
5069 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5070 cur_params.element_ttl) ||
5071 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5072 cur_params.auto_open_plinks) ||
5073 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5074 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5075 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5076 cur_params.dot11MeshHWMPmaxPREQretries) ||
5077 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5078 cur_params.path_refresh_time) ||
5079 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5080 cur_params.min_discovery_timeout) ||
5081 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5082 cur_params.dot11MeshHWMPactivePathTimeout) ||
5083 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5084 cur_params.dot11MeshHWMPpreqMinInterval) ||
5085 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5086 cur_params.dot11MeshHWMPperrMinInterval) ||
5087 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5088 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5089 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5090 cur_params.dot11MeshHWMPRootMode) ||
5091 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5092 cur_params.dot11MeshHWMPRannInterval) ||
5093 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5094 cur_params.dot11MeshGateAnnouncementProtocol) ||
5095 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5096 cur_params.dot11MeshForwarding) ||
5097 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5098 cur_params.rssi_threshold) ||
5099 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5100 cur_params.ht_opmode) ||
5101 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5102 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5103 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5104 cur_params.dot11MeshHWMProotInterval) ||
5105 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5106 cur_params.dot11MeshHWMPconfirmationInterval) ||
5107 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5108 cur_params.power_mode) ||
5109 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5110 cur_params.dot11MeshAwakeWindowDuration) ||
5111 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5112 cur_params.plink_timeout))
5113 goto nla_put_failure;
5114 nla_nest_end(msg, pinfoattr);
5115 genlmsg_end(msg, hdr);
5116 return genlmsg_reply(msg, info);
5117
5118 nla_put_failure:
5119 genlmsg_cancel(msg, hdr);
5120 out:
5121 nlmsg_free(msg);
5122 return -ENOBUFS;
5123 }
5124
5125 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5126 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5127 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5128 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5129 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5130 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5131 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5132 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5133 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5134 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5135 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5136 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5137 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5138 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5139 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5140 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5141 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5142 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5143 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5144 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5145 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5146 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5147 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5148 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5149 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5150 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5151 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5152 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5153 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5154 };
5155
5156 static const struct nla_policy
5157 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5158 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5159 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5160 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5161 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5162 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5163 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5164 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5165 .len = IEEE80211_MAX_DATA_LEN },
5166 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5167 };
5168
5169 static int nl80211_parse_mesh_config(struct genl_info *info,
5170 struct mesh_config *cfg,
5171 u32 *mask_out)
5172 {
5173 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5174 u32 mask = 0;
5175
5176 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5177 do { \
5178 if (tb[attr]) { \
5179 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5180 return -EINVAL; \
5181 cfg->param = fn(tb[attr]); \
5182 mask |= (1 << (attr - 1)); \
5183 } \
5184 } while (0)
5185
5186
5187 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5188 return -EINVAL;
5189 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5190 info->attrs[NL80211_ATTR_MESH_CONFIG],
5191 nl80211_meshconf_params_policy))
5192 return -EINVAL;
5193
5194 /* This makes sure that there aren't more than 32 mesh config
5195 * parameters (otherwise our bitfield scheme would not work.) */
5196 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5197
5198 /* Fill in the params struct */
5199 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5200 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5201 nla_get_u16);
5202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5203 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5204 nla_get_u16);
5205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5206 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5207 nla_get_u16);
5208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5209 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5210 nla_get_u16);
5211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5212 mask, NL80211_MESHCONF_MAX_RETRIES,
5213 nla_get_u8);
5214 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5215 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5216 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5217 mask, NL80211_MESHCONF_ELEMENT_TTL,
5218 nla_get_u8);
5219 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5220 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5221 nla_get_u8);
5222 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5223 1, 255, mask,
5224 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5225 nla_get_u32);
5226 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5227 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5228 nla_get_u8);
5229 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5230 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5231 nla_get_u32);
5232 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5233 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5234 nla_get_u16);
5235 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5236 1, 65535, mask,
5237 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5238 nla_get_u32);
5239 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5240 1, 65535, mask,
5241 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5242 nla_get_u16);
5243 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5244 1, 65535, mask,
5245 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5246 nla_get_u16);
5247 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5248 dot11MeshHWMPnetDiameterTraversalTime,
5249 1, 65535, mask,
5250 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5251 nla_get_u16);
5252 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5253 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5254 nla_get_u8);
5255 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5256 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5257 nla_get_u16);
5258 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5259 dot11MeshGateAnnouncementProtocol, 0, 1,
5260 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5261 nla_get_u8);
5262 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5263 mask, NL80211_MESHCONF_FORWARDING,
5264 nla_get_u8);
5265 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5266 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5267 nla_get_s32);
5268 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5269 mask, NL80211_MESHCONF_HT_OPMODE,
5270 nla_get_u16);
5271 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5272 1, 65535, mask,
5273 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5274 nla_get_u32);
5275 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5276 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5277 nla_get_u16);
5278 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5279 dot11MeshHWMPconfirmationInterval,
5280 1, 65535, mask,
5281 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5282 nla_get_u16);
5283 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5284 NL80211_MESH_POWER_ACTIVE,
5285 NL80211_MESH_POWER_MAX,
5286 mask, NL80211_MESHCONF_POWER_MODE,
5287 nla_get_u32);
5288 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5289 0, 65535, mask,
5290 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5291 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5292 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5293 nla_get_u32);
5294 if (mask_out)
5295 *mask_out = mask;
5296
5297 return 0;
5298
5299 #undef FILL_IN_MESH_PARAM_IF_SET
5300 }
5301
5302 static int nl80211_parse_mesh_setup(struct genl_info *info,
5303 struct mesh_setup *setup)
5304 {
5305 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5306 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5307
5308 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5309 return -EINVAL;
5310 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5311 info->attrs[NL80211_ATTR_MESH_SETUP],
5312 nl80211_mesh_setup_params_policy))
5313 return -EINVAL;
5314
5315 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5316 setup->sync_method =
5317 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5318 IEEE80211_SYNC_METHOD_VENDOR :
5319 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5320
5321 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5322 setup->path_sel_proto =
5323 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5324 IEEE80211_PATH_PROTOCOL_VENDOR :
5325 IEEE80211_PATH_PROTOCOL_HWMP;
5326
5327 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5328 setup->path_metric =
5329 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5330 IEEE80211_PATH_METRIC_VENDOR :
5331 IEEE80211_PATH_METRIC_AIRTIME;
5332
5333
5334 if (tb[NL80211_MESH_SETUP_IE]) {
5335 struct nlattr *ieattr =
5336 tb[NL80211_MESH_SETUP_IE];
5337 if (!is_valid_ie_attr(ieattr))
5338 return -EINVAL;
5339 setup->ie = nla_data(ieattr);
5340 setup->ie_len = nla_len(ieattr);
5341 }
5342 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5343 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5344 return -EINVAL;
5345 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5346 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5347 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5348 if (setup->is_secure)
5349 setup->user_mpm = true;
5350
5351 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5352 if (!setup->user_mpm)
5353 return -EINVAL;
5354 setup->auth_id =
5355 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5356 }
5357
5358 return 0;
5359 }
5360
5361 static int nl80211_update_mesh_config(struct sk_buff *skb,
5362 struct genl_info *info)
5363 {
5364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5365 struct net_device *dev = info->user_ptr[1];
5366 struct wireless_dev *wdev = dev->ieee80211_ptr;
5367 struct mesh_config cfg;
5368 u32 mask;
5369 int err;
5370
5371 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5372 return -EOPNOTSUPP;
5373
5374 if (!rdev->ops->update_mesh_config)
5375 return -EOPNOTSUPP;
5376
5377 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5378 if (err)
5379 return err;
5380
5381 wdev_lock(wdev);
5382 if (!wdev->mesh_id_len)
5383 err = -ENOLINK;
5384
5385 if (!err)
5386 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5387
5388 wdev_unlock(wdev);
5389
5390 return err;
5391 }
5392
5393 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5394 struct sk_buff *msg)
5395 {
5396 struct nlattr *nl_reg_rules;
5397 unsigned int i;
5398
5399 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5400 (regdom->dfs_region &&
5401 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5402 goto nla_put_failure;
5403
5404 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5405 if (!nl_reg_rules)
5406 goto nla_put_failure;
5407
5408 for (i = 0; i < regdom->n_reg_rules; i++) {
5409 struct nlattr *nl_reg_rule;
5410 const struct ieee80211_reg_rule *reg_rule;
5411 const struct ieee80211_freq_range *freq_range;
5412 const struct ieee80211_power_rule *power_rule;
5413 unsigned int max_bandwidth_khz;
5414
5415 reg_rule = &regdom->reg_rules[i];
5416 freq_range = &reg_rule->freq_range;
5417 power_rule = &reg_rule->power_rule;
5418
5419 nl_reg_rule = nla_nest_start(msg, i);
5420 if (!nl_reg_rule)
5421 goto nla_put_failure;
5422
5423 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5424 if (!max_bandwidth_khz)
5425 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5426 reg_rule);
5427
5428 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5429 reg_rule->flags) ||
5430 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5431 freq_range->start_freq_khz) ||
5432 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5433 freq_range->end_freq_khz) ||
5434 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5435 max_bandwidth_khz) ||
5436 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5437 power_rule->max_antenna_gain) ||
5438 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5439 power_rule->max_eirp) ||
5440 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5441 reg_rule->dfs_cac_ms))
5442 goto nla_put_failure;
5443
5444 nla_nest_end(msg, nl_reg_rule);
5445 }
5446
5447 nla_nest_end(msg, nl_reg_rules);
5448 return 0;
5449
5450 nla_put_failure:
5451 return -EMSGSIZE;
5452 }
5453
5454 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5455 {
5456 const struct ieee80211_regdomain *regdom = NULL;
5457 struct cfg80211_registered_device *rdev;
5458 struct wiphy *wiphy = NULL;
5459 struct sk_buff *msg;
5460 void *hdr;
5461
5462 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5463 if (!msg)
5464 return -ENOBUFS;
5465
5466 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5467 NL80211_CMD_GET_REG);
5468 if (!hdr)
5469 goto put_failure;
5470
5471 if (info->attrs[NL80211_ATTR_WIPHY]) {
5472 bool self_managed;
5473
5474 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5475 if (IS_ERR(rdev)) {
5476 nlmsg_free(msg);
5477 return PTR_ERR(rdev);
5478 }
5479
5480 wiphy = &rdev->wiphy;
5481 self_managed = wiphy->regulatory_flags &
5482 REGULATORY_WIPHY_SELF_MANAGED;
5483 regdom = get_wiphy_regdom(wiphy);
5484
5485 /* a self-managed-reg device must have a private regdom */
5486 if (WARN_ON(!regdom && self_managed)) {
5487 nlmsg_free(msg);
5488 return -EINVAL;
5489 }
5490
5491 if (regdom &&
5492 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5493 goto nla_put_failure;
5494 }
5495
5496 if (!wiphy && reg_last_request_cell_base() &&
5497 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5498 NL80211_USER_REG_HINT_CELL_BASE))
5499 goto nla_put_failure;
5500
5501 rcu_read_lock();
5502
5503 if (!regdom)
5504 regdom = rcu_dereference(cfg80211_regdomain);
5505
5506 if (nl80211_put_regdom(regdom, msg))
5507 goto nla_put_failure_rcu;
5508
5509 rcu_read_unlock();
5510
5511 genlmsg_end(msg, hdr);
5512 return genlmsg_reply(msg, info);
5513
5514 nla_put_failure_rcu:
5515 rcu_read_unlock();
5516 nla_put_failure:
5517 genlmsg_cancel(msg, hdr);
5518 put_failure:
5519 nlmsg_free(msg);
5520 return -EMSGSIZE;
5521 }
5522
5523 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5524 u32 seq, int flags, struct wiphy *wiphy,
5525 const struct ieee80211_regdomain *regdom)
5526 {
5527 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5528 NL80211_CMD_GET_REG);
5529
5530 if (!hdr)
5531 return -1;
5532
5533 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5534
5535 if (nl80211_put_regdom(regdom, msg))
5536 goto nla_put_failure;
5537
5538 if (!wiphy && reg_last_request_cell_base() &&
5539 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5540 NL80211_USER_REG_HINT_CELL_BASE))
5541 goto nla_put_failure;
5542
5543 if (wiphy &&
5544 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5545 goto nla_put_failure;
5546
5547 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5548 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5549 goto nla_put_failure;
5550
5551 genlmsg_end(msg, hdr);
5552 return 0;
5553
5554 nla_put_failure:
5555 genlmsg_cancel(msg, hdr);
5556 return -EMSGSIZE;
5557 }
5558
5559 static int nl80211_get_reg_dump(struct sk_buff *skb,
5560 struct netlink_callback *cb)
5561 {
5562 const struct ieee80211_regdomain *regdom = NULL;
5563 struct cfg80211_registered_device *rdev;
5564 int err, reg_idx, start = cb->args[2];
5565
5566 rtnl_lock();
5567
5568 if (cfg80211_regdomain && start == 0) {
5569 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5570 NLM_F_MULTI, NULL,
5571 rtnl_dereference(cfg80211_regdomain));
5572 if (err < 0)
5573 goto out_err;
5574 }
5575
5576 /* the global regdom is idx 0 */
5577 reg_idx = 1;
5578 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5579 regdom = get_wiphy_regdom(&rdev->wiphy);
5580 if (!regdom)
5581 continue;
5582
5583 if (++reg_idx <= start)
5584 continue;
5585
5586 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5587 NLM_F_MULTI, &rdev->wiphy, regdom);
5588 if (err < 0) {
5589 reg_idx--;
5590 break;
5591 }
5592 }
5593
5594 cb->args[2] = reg_idx;
5595 err = skb->len;
5596 out_err:
5597 rtnl_unlock();
5598 return err;
5599 }
5600
5601 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5602 {
5603 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5604 struct nlattr *nl_reg_rule;
5605 char *alpha2;
5606 int rem_reg_rules, r;
5607 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5608 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5609 struct ieee80211_regdomain *rd;
5610
5611 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5612 return -EINVAL;
5613
5614 if (!info->attrs[NL80211_ATTR_REG_RULES])
5615 return -EINVAL;
5616
5617 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5618
5619 if (info->attrs[NL80211_ATTR_DFS_REGION])
5620 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5621
5622 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5623 rem_reg_rules) {
5624 num_rules++;
5625 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5626 return -EINVAL;
5627 }
5628
5629 if (!reg_is_valid_request(alpha2))
5630 return -EINVAL;
5631
5632 size_of_regd = sizeof(struct ieee80211_regdomain) +
5633 num_rules * sizeof(struct ieee80211_reg_rule);
5634
5635 rd = kzalloc(size_of_regd, GFP_KERNEL);
5636 if (!rd)
5637 return -ENOMEM;
5638
5639 rd->n_reg_rules = num_rules;
5640 rd->alpha2[0] = alpha2[0];
5641 rd->alpha2[1] = alpha2[1];
5642
5643 /*
5644 * Disable DFS master mode if the DFS region was
5645 * not supported or known on this kernel.
5646 */
5647 if (reg_supported_dfs_region(dfs_region))
5648 rd->dfs_region = dfs_region;
5649
5650 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5651 rem_reg_rules) {
5652 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5653 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5654 reg_rule_policy);
5655 if (r)
5656 goto bad_reg;
5657 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5658 if (r)
5659 goto bad_reg;
5660
5661 rule_idx++;
5662
5663 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5664 r = -EINVAL;
5665 goto bad_reg;
5666 }
5667 }
5668
5669 r = set_regdom(rd, REGD_SOURCE_CRDA);
5670 /* set_regdom took ownership */
5671 rd = NULL;
5672
5673 bad_reg:
5674 kfree(rd);
5675 return r;
5676 }
5677
5678 static int validate_scan_freqs(struct nlattr *freqs)
5679 {
5680 struct nlattr *attr1, *attr2;
5681 int n_channels = 0, tmp1, tmp2;
5682
5683 nla_for_each_nested(attr1, freqs, tmp1) {
5684 n_channels++;
5685 /*
5686 * Some hardware has a limited channel list for
5687 * scanning, and it is pretty much nonsensical
5688 * to scan for a channel twice, so disallow that
5689 * and don't require drivers to check that the
5690 * channel list they get isn't longer than what
5691 * they can scan, as long as they can scan all
5692 * the channels they registered at once.
5693 */
5694 nla_for_each_nested(attr2, freqs, tmp2)
5695 if (attr1 != attr2 &&
5696 nla_get_u32(attr1) == nla_get_u32(attr2))
5697 return 0;
5698 }
5699
5700 return n_channels;
5701 }
5702
5703 static int nl80211_parse_random_mac(struct nlattr **attrs,
5704 u8 *mac_addr, u8 *mac_addr_mask)
5705 {
5706 int i;
5707
5708 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5709 eth_zero_addr(mac_addr);
5710 eth_zero_addr(mac_addr_mask);
5711 mac_addr[0] = 0x2;
5712 mac_addr_mask[0] = 0x3;
5713
5714 return 0;
5715 }
5716
5717 /* need both or none */
5718 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5719 return -EINVAL;
5720
5721 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5722 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5723
5724 /* don't allow or configure an mcast address */
5725 if (!is_multicast_ether_addr(mac_addr_mask) ||
5726 is_multicast_ether_addr(mac_addr))
5727 return -EINVAL;
5728
5729 /*
5730 * allow users to pass a MAC address that has bits set outside
5731 * of the mask, but don't bother drivers with having to deal
5732 * with such bits
5733 */
5734 for (i = 0; i < ETH_ALEN; i++)
5735 mac_addr[i] &= mac_addr_mask[i];
5736
5737 return 0;
5738 }
5739
5740 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5741 {
5742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5743 struct wireless_dev *wdev = info->user_ptr[1];
5744 struct cfg80211_scan_request *request;
5745 struct nlattr *attr;
5746 struct wiphy *wiphy;
5747 int err, tmp, n_ssids = 0, n_channels, i;
5748 size_t ie_len;
5749
5750 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5751 return -EINVAL;
5752
5753 wiphy = &rdev->wiphy;
5754
5755 if (!rdev->ops->scan)
5756 return -EOPNOTSUPP;
5757
5758 if (rdev->scan_req || rdev->scan_msg) {
5759 err = -EBUSY;
5760 goto unlock;
5761 }
5762
5763 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5764 n_channels = validate_scan_freqs(
5765 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5766 if (!n_channels) {
5767 err = -EINVAL;
5768 goto unlock;
5769 }
5770 } else {
5771 n_channels = ieee80211_get_num_supported_channels(wiphy);
5772 }
5773
5774 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5775 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5776 n_ssids++;
5777
5778 if (n_ssids > wiphy->max_scan_ssids) {
5779 err = -EINVAL;
5780 goto unlock;
5781 }
5782
5783 if (info->attrs[NL80211_ATTR_IE])
5784 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5785 else
5786 ie_len = 0;
5787
5788 if (ie_len > wiphy->max_scan_ie_len) {
5789 err = -EINVAL;
5790 goto unlock;
5791 }
5792
5793 request = kzalloc(sizeof(*request)
5794 + sizeof(*request->ssids) * n_ssids
5795 + sizeof(*request->channels) * n_channels
5796 + ie_len, GFP_KERNEL);
5797 if (!request) {
5798 err = -ENOMEM;
5799 goto unlock;
5800 }
5801
5802 if (n_ssids)
5803 request->ssids = (void *)&request->channels[n_channels];
5804 request->n_ssids = n_ssids;
5805 if (ie_len) {
5806 if (n_ssids)
5807 request->ie = (void *)(request->ssids + n_ssids);
5808 else
5809 request->ie = (void *)(request->channels + n_channels);
5810 }
5811
5812 i = 0;
5813 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5814 /* user specified, bail out if channel not found */
5815 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5816 struct ieee80211_channel *chan;
5817
5818 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5819
5820 if (!chan) {
5821 err = -EINVAL;
5822 goto out_free;
5823 }
5824
5825 /* ignore disabled channels */
5826 if (chan->flags & IEEE80211_CHAN_DISABLED)
5827 continue;
5828
5829 request->channels[i] = chan;
5830 i++;
5831 }
5832 } else {
5833 enum ieee80211_band band;
5834
5835 /* all channels */
5836 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5837 int j;
5838 if (!wiphy->bands[band])
5839 continue;
5840 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5841 struct ieee80211_channel *chan;
5842
5843 chan = &wiphy->bands[band]->channels[j];
5844
5845 if (chan->flags & IEEE80211_CHAN_DISABLED)
5846 continue;
5847
5848 request->channels[i] = chan;
5849 i++;
5850 }
5851 }
5852 }
5853
5854 if (!i) {
5855 err = -EINVAL;
5856 goto out_free;
5857 }
5858
5859 request->n_channels = i;
5860
5861 i = 0;
5862 if (n_ssids) {
5863 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5864 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5865 err = -EINVAL;
5866 goto out_free;
5867 }
5868 request->ssids[i].ssid_len = nla_len(attr);
5869 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5870 i++;
5871 }
5872 }
5873
5874 if (info->attrs[NL80211_ATTR_IE]) {
5875 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5876 memcpy((void *)request->ie,
5877 nla_data(info->attrs[NL80211_ATTR_IE]),
5878 request->ie_len);
5879 }
5880
5881 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5882 if (wiphy->bands[i])
5883 request->rates[i] =
5884 (1 << wiphy->bands[i]->n_bitrates) - 1;
5885
5886 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5887 nla_for_each_nested(attr,
5888 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5889 tmp) {
5890 enum ieee80211_band band = nla_type(attr);
5891
5892 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5893 err = -EINVAL;
5894 goto out_free;
5895 }
5896
5897 if (!wiphy->bands[band])
5898 continue;
5899
5900 err = ieee80211_get_ratemask(wiphy->bands[band],
5901 nla_data(attr),
5902 nla_len(attr),
5903 &request->rates[band]);
5904 if (err)
5905 goto out_free;
5906 }
5907 }
5908
5909 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5910 request->flags = nla_get_u32(
5911 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5912 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5913 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5914 err = -EOPNOTSUPP;
5915 goto out_free;
5916 }
5917
5918 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5919 if (!(wiphy->features &
5920 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5921 err = -EOPNOTSUPP;
5922 goto out_free;
5923 }
5924
5925 if (wdev->current_bss) {
5926 err = -EOPNOTSUPP;
5927 goto out_free;
5928 }
5929
5930 err = nl80211_parse_random_mac(info->attrs,
5931 request->mac_addr,
5932 request->mac_addr_mask);
5933 if (err)
5934 goto out_free;
5935 }
5936 }
5937
5938 request->no_cck =
5939 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5940
5941 request->wdev = wdev;
5942 request->wiphy = &rdev->wiphy;
5943 request->scan_start = jiffies;
5944
5945 rdev->scan_req = request;
5946 err = rdev_scan(rdev, request);
5947
5948 if (!err) {
5949 nl80211_send_scan_start(rdev, wdev);
5950 if (wdev->netdev)
5951 dev_hold(wdev->netdev);
5952 } else {
5953 out_free:
5954 rdev->scan_req = NULL;
5955 kfree(request);
5956 }
5957
5958 unlock:
5959 return err;
5960 }
5961
5962 static struct cfg80211_sched_scan_request *
5963 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5964 struct nlattr **attrs)
5965 {
5966 struct cfg80211_sched_scan_request *request;
5967 struct nlattr *attr;
5968 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5969 u32 interval;
5970 enum ieee80211_band band;
5971 size_t ie_len;
5972 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5973 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5974
5975 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5976 return ERR_PTR(-EINVAL);
5977
5978 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5979 return ERR_PTR(-EINVAL);
5980
5981 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5982 if (interval == 0)
5983 return ERR_PTR(-EINVAL);
5984
5985 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5986 n_channels = validate_scan_freqs(
5987 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5988 if (!n_channels)
5989 return ERR_PTR(-EINVAL);
5990 } else {
5991 n_channels = ieee80211_get_num_supported_channels(wiphy);
5992 }
5993
5994 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5995 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5996 tmp)
5997 n_ssids++;
5998
5999 if (n_ssids > wiphy->max_sched_scan_ssids)
6000 return ERR_PTR(-EINVAL);
6001
6002 /*
6003 * First, count the number of 'real' matchsets. Due to an issue with
6004 * the old implementation, matchsets containing only the RSSI attribute
6005 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6006 * RSSI for all matchsets, rather than their own matchset for reporting
6007 * all APs with a strong RSSI. This is needed to be compatible with
6008 * older userspace that treated a matchset with only the RSSI as the
6009 * global RSSI for all other matchsets - if there are other matchsets.
6010 */
6011 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6012 nla_for_each_nested(attr,
6013 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6014 tmp) {
6015 struct nlattr *rssi;
6016
6017 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6018 nla_data(attr), nla_len(attr),
6019 nl80211_match_policy);
6020 if (err)
6021 return ERR_PTR(err);
6022 /* add other standalone attributes here */
6023 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6024 n_match_sets++;
6025 continue;
6026 }
6027 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6028 if (rssi)
6029 default_match_rssi = nla_get_s32(rssi);
6030 }
6031 }
6032
6033 /* However, if there's no other matchset, add the RSSI one */
6034 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6035 n_match_sets = 1;
6036
6037 if (n_match_sets > wiphy->max_match_sets)
6038 return ERR_PTR(-EINVAL);
6039
6040 if (attrs[NL80211_ATTR_IE])
6041 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6042 else
6043 ie_len = 0;
6044
6045 if (ie_len > wiphy->max_sched_scan_ie_len)
6046 return ERR_PTR(-EINVAL);
6047
6048 request = kzalloc(sizeof(*request)
6049 + sizeof(*request->ssids) * n_ssids
6050 + sizeof(*request->match_sets) * n_match_sets
6051 + sizeof(*request->channels) * n_channels
6052 + ie_len, GFP_KERNEL);
6053 if (!request)
6054 return ERR_PTR(-ENOMEM);
6055
6056 if (n_ssids)
6057 request->ssids = (void *)&request->channels[n_channels];
6058 request->n_ssids = n_ssids;
6059 if (ie_len) {
6060 if (n_ssids)
6061 request->ie = (void *)(request->ssids + n_ssids);
6062 else
6063 request->ie = (void *)(request->channels + n_channels);
6064 }
6065
6066 if (n_match_sets) {
6067 if (request->ie)
6068 request->match_sets = (void *)(request->ie + ie_len);
6069 else if (n_ssids)
6070 request->match_sets =
6071 (void *)(request->ssids + n_ssids);
6072 else
6073 request->match_sets =
6074 (void *)(request->channels + n_channels);
6075 }
6076 request->n_match_sets = n_match_sets;
6077
6078 i = 0;
6079 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6080 /* user specified, bail out if channel not found */
6081 nla_for_each_nested(attr,
6082 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6083 tmp) {
6084 struct ieee80211_channel *chan;
6085
6086 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6087
6088 if (!chan) {
6089 err = -EINVAL;
6090 goto out_free;
6091 }
6092
6093 /* ignore disabled channels */
6094 if (chan->flags & IEEE80211_CHAN_DISABLED)
6095 continue;
6096
6097 request->channels[i] = chan;
6098 i++;
6099 }
6100 } else {
6101 /* all channels */
6102 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6103 int j;
6104 if (!wiphy->bands[band])
6105 continue;
6106 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6107 struct ieee80211_channel *chan;
6108
6109 chan = &wiphy->bands[band]->channels[j];
6110
6111 if (chan->flags & IEEE80211_CHAN_DISABLED)
6112 continue;
6113
6114 request->channels[i] = chan;
6115 i++;
6116 }
6117 }
6118 }
6119
6120 if (!i) {
6121 err = -EINVAL;
6122 goto out_free;
6123 }
6124
6125 request->n_channels = i;
6126
6127 i = 0;
6128 if (n_ssids) {
6129 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6130 tmp) {
6131 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6132 err = -EINVAL;
6133 goto out_free;
6134 }
6135 request->ssids[i].ssid_len = nla_len(attr);
6136 memcpy(request->ssids[i].ssid, nla_data(attr),
6137 nla_len(attr));
6138 i++;
6139 }
6140 }
6141
6142 i = 0;
6143 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6144 nla_for_each_nested(attr,
6145 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6146 tmp) {
6147 struct nlattr *ssid, *rssi;
6148
6149 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6150 nla_data(attr), nla_len(attr),
6151 nl80211_match_policy);
6152 if (err)
6153 goto out_free;
6154 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6155 if (ssid) {
6156 if (WARN_ON(i >= n_match_sets)) {
6157 /* this indicates a programming error,
6158 * the loop above should have verified
6159 * things properly
6160 */
6161 err = -EINVAL;
6162 goto out_free;
6163 }
6164
6165 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6166 err = -EINVAL;
6167 goto out_free;
6168 }
6169 memcpy(request->match_sets[i].ssid.ssid,
6170 nla_data(ssid), nla_len(ssid));
6171 request->match_sets[i].ssid.ssid_len =
6172 nla_len(ssid);
6173 /* special attribute - old implemenation w/a */
6174 request->match_sets[i].rssi_thold =
6175 default_match_rssi;
6176 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6177 if (rssi)
6178 request->match_sets[i].rssi_thold =
6179 nla_get_s32(rssi);
6180 }
6181 i++;
6182 }
6183
6184 /* there was no other matchset, so the RSSI one is alone */
6185 if (i == 0 && n_match_sets)
6186 request->match_sets[0].rssi_thold = default_match_rssi;
6187
6188 request->min_rssi_thold = INT_MAX;
6189 for (i = 0; i < n_match_sets; i++)
6190 request->min_rssi_thold =
6191 min(request->match_sets[i].rssi_thold,
6192 request->min_rssi_thold);
6193 } else {
6194 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6195 }
6196
6197 if (ie_len) {
6198 request->ie_len = ie_len;
6199 memcpy((void *)request->ie,
6200 nla_data(attrs[NL80211_ATTR_IE]),
6201 request->ie_len);
6202 }
6203
6204 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6205 request->flags = nla_get_u32(
6206 attrs[NL80211_ATTR_SCAN_FLAGS]);
6207 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6208 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6209 err = -EOPNOTSUPP;
6210 goto out_free;
6211 }
6212
6213 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6214 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6215
6216 if (!wdev) /* must be net-detect */
6217 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6218
6219 if (!(wiphy->features & flg)) {
6220 err = -EOPNOTSUPP;
6221 goto out_free;
6222 }
6223
6224 if (wdev && wdev->current_bss) {
6225 err = -EOPNOTSUPP;
6226 goto out_free;
6227 }
6228
6229 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6230 request->mac_addr_mask);
6231 if (err)
6232 goto out_free;
6233 }
6234 }
6235
6236 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6237 request->delay =
6238 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6239
6240 request->interval = interval;
6241 request->scan_start = jiffies;
6242
6243 return request;
6244
6245 out_free:
6246 kfree(request);
6247 return ERR_PTR(err);
6248 }
6249
6250 static int nl80211_start_sched_scan(struct sk_buff *skb,
6251 struct genl_info *info)
6252 {
6253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6254 struct net_device *dev = info->user_ptr[1];
6255 struct wireless_dev *wdev = dev->ieee80211_ptr;
6256 struct cfg80211_sched_scan_request *sched_scan_req;
6257 int err;
6258
6259 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6260 !rdev->ops->sched_scan_start)
6261 return -EOPNOTSUPP;
6262
6263 if (rdev->sched_scan_req)
6264 return -EINPROGRESS;
6265
6266 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6267 info->attrs);
6268
6269 err = PTR_ERR_OR_ZERO(sched_scan_req);
6270 if (err)
6271 goto out_err;
6272
6273 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6274 if (err)
6275 goto out_free;
6276
6277 sched_scan_req->dev = dev;
6278 sched_scan_req->wiphy = &rdev->wiphy;
6279
6280 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6281 sched_scan_req->owner_nlportid = info->snd_portid;
6282
6283 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6284
6285 nl80211_send_sched_scan(rdev, dev,
6286 NL80211_CMD_START_SCHED_SCAN);
6287 return 0;
6288
6289 out_free:
6290 kfree(sched_scan_req);
6291 out_err:
6292 return err;
6293 }
6294
6295 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6296 struct genl_info *info)
6297 {
6298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6299
6300 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6301 !rdev->ops->sched_scan_stop)
6302 return -EOPNOTSUPP;
6303
6304 return __cfg80211_stop_sched_scan(rdev, false);
6305 }
6306
6307 static int nl80211_start_radar_detection(struct sk_buff *skb,
6308 struct genl_info *info)
6309 {
6310 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6311 struct net_device *dev = info->user_ptr[1];
6312 struct wireless_dev *wdev = dev->ieee80211_ptr;
6313 struct cfg80211_chan_def chandef;
6314 enum nl80211_dfs_regions dfs_region;
6315 unsigned int cac_time_ms;
6316 int err;
6317
6318 dfs_region = reg_get_dfs_region(wdev->wiphy);
6319 if (dfs_region == NL80211_DFS_UNSET)
6320 return -EINVAL;
6321
6322 err = nl80211_parse_chandef(rdev, info, &chandef);
6323 if (err)
6324 return err;
6325
6326 if (netif_carrier_ok(dev))
6327 return -EBUSY;
6328
6329 if (wdev->cac_started)
6330 return -EBUSY;
6331
6332 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6333 wdev->iftype);
6334 if (err < 0)
6335 return err;
6336
6337 if (err == 0)
6338 return -EINVAL;
6339
6340 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6341 return -EINVAL;
6342
6343 if (!rdev->ops->start_radar_detection)
6344 return -EOPNOTSUPP;
6345
6346 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6347 if (WARN_ON(!cac_time_ms))
6348 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6349
6350 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6351 cac_time_ms);
6352 if (!err) {
6353 wdev->chandef = chandef;
6354 wdev->cac_started = true;
6355 wdev->cac_start_time = jiffies;
6356 wdev->cac_time_ms = cac_time_ms;
6357 }
6358 return err;
6359 }
6360
6361 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6362 {
6363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6364 struct net_device *dev = info->user_ptr[1];
6365 struct wireless_dev *wdev = dev->ieee80211_ptr;
6366 struct cfg80211_csa_settings params;
6367 /* csa_attrs is defined static to avoid waste of stack size - this
6368 * function is called under RTNL lock, so this should not be a problem.
6369 */
6370 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6371 int err;
6372 bool need_new_beacon = false;
6373 int len, i;
6374 u32 cs_count;
6375
6376 if (!rdev->ops->channel_switch ||
6377 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6378 return -EOPNOTSUPP;
6379
6380 switch (dev->ieee80211_ptr->iftype) {
6381 case NL80211_IFTYPE_AP:
6382 case NL80211_IFTYPE_P2P_GO:
6383 need_new_beacon = true;
6384
6385 /* useless if AP is not running */
6386 if (!wdev->beacon_interval)
6387 return -ENOTCONN;
6388 break;
6389 case NL80211_IFTYPE_ADHOC:
6390 if (!wdev->ssid_len)
6391 return -ENOTCONN;
6392 break;
6393 case NL80211_IFTYPE_MESH_POINT:
6394 if (!wdev->mesh_id_len)
6395 return -ENOTCONN;
6396 break;
6397 default:
6398 return -EOPNOTSUPP;
6399 }
6400
6401 memset(&params, 0, sizeof(params));
6402
6403 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6404 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6405 return -EINVAL;
6406
6407 /* only important for AP, IBSS and mesh create IEs internally */
6408 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6409 return -EINVAL;
6410
6411 /* Even though the attribute is u32, the specification says
6412 * u8, so let's make sure we don't overflow.
6413 */
6414 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6415 if (cs_count > 255)
6416 return -EINVAL;
6417
6418 params.count = cs_count;
6419
6420 if (!need_new_beacon)
6421 goto skip_beacons;
6422
6423 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6424 if (err)
6425 return err;
6426
6427 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6428 info->attrs[NL80211_ATTR_CSA_IES],
6429 nl80211_policy);
6430 if (err)
6431 return err;
6432
6433 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6434 if (err)
6435 return err;
6436
6437 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6438 return -EINVAL;
6439
6440 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6441 if (!len || (len % sizeof(u16)))
6442 return -EINVAL;
6443
6444 params.n_counter_offsets_beacon = len / sizeof(u16);
6445 if (rdev->wiphy.max_num_csa_counters &&
6446 (params.n_counter_offsets_beacon >
6447 rdev->wiphy.max_num_csa_counters))
6448 return -EINVAL;
6449
6450 params.counter_offsets_beacon =
6451 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6452
6453 /* sanity checks - counters should fit and be the same */
6454 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6455 u16 offset = params.counter_offsets_beacon[i];
6456
6457 if (offset >= params.beacon_csa.tail_len)
6458 return -EINVAL;
6459
6460 if (params.beacon_csa.tail[offset] != params.count)
6461 return -EINVAL;
6462 }
6463
6464 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6465 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6466 if (!len || (len % sizeof(u16)))
6467 return -EINVAL;
6468
6469 params.n_counter_offsets_presp = len / sizeof(u16);
6470 if (rdev->wiphy.max_num_csa_counters &&
6471 (params.n_counter_offsets_beacon >
6472 rdev->wiphy.max_num_csa_counters))
6473 return -EINVAL;
6474
6475 params.counter_offsets_presp =
6476 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6477
6478 /* sanity checks - counters should fit and be the same */
6479 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6480 u16 offset = params.counter_offsets_presp[i];
6481
6482 if (offset >= params.beacon_csa.probe_resp_len)
6483 return -EINVAL;
6484
6485 if (params.beacon_csa.probe_resp[offset] !=
6486 params.count)
6487 return -EINVAL;
6488 }
6489 }
6490
6491 skip_beacons:
6492 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6493 if (err)
6494 return err;
6495
6496 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6497 wdev->iftype))
6498 return -EINVAL;
6499
6500 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6501 &params.chandef,
6502 wdev->iftype);
6503 if (err < 0)
6504 return err;
6505
6506 if (err > 0)
6507 params.radar_required = true;
6508
6509 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6510 params.block_tx = true;
6511
6512 wdev_lock(wdev);
6513 err = rdev_channel_switch(rdev, dev, &params);
6514 wdev_unlock(wdev);
6515
6516 return err;
6517 }
6518
6519 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6520 u32 seq, int flags,
6521 struct cfg80211_registered_device *rdev,
6522 struct wireless_dev *wdev,
6523 struct cfg80211_internal_bss *intbss)
6524 {
6525 struct cfg80211_bss *res = &intbss->pub;
6526 const struct cfg80211_bss_ies *ies;
6527 void *hdr;
6528 struct nlattr *bss;
6529
6530 ASSERT_WDEV_LOCK(wdev);
6531
6532 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6533 NL80211_CMD_NEW_SCAN_RESULTS);
6534 if (!hdr)
6535 return -1;
6536
6537 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6538
6539 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6540 goto nla_put_failure;
6541 if (wdev->netdev &&
6542 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6543 goto nla_put_failure;
6544 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6545 goto nla_put_failure;
6546
6547 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6548 if (!bss)
6549 goto nla_put_failure;
6550 if ((!is_zero_ether_addr(res->bssid) &&
6551 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6552 goto nla_put_failure;
6553
6554 rcu_read_lock();
6555 /* indicate whether we have probe response data or not */
6556 if (rcu_access_pointer(res->proberesp_ies) &&
6557 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6558 goto fail_unlock_rcu;
6559
6560 /* this pointer prefers to be pointed to probe response data
6561 * but is always valid
6562 */
6563 ies = rcu_dereference(res->ies);
6564 if (ies) {
6565 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6566 goto fail_unlock_rcu;
6567 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6568 ies->len, ies->data))
6569 goto fail_unlock_rcu;
6570 }
6571
6572 /* and this pointer is always (unless driver didn't know) beacon data */
6573 ies = rcu_dereference(res->beacon_ies);
6574 if (ies && ies->from_beacon) {
6575 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6576 goto fail_unlock_rcu;
6577 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6578 ies->len, ies->data))
6579 goto fail_unlock_rcu;
6580 }
6581 rcu_read_unlock();
6582
6583 if (res->beacon_interval &&
6584 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6585 goto nla_put_failure;
6586 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6587 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6588 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6589 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6590 jiffies_to_msecs(jiffies - intbss->ts)))
6591 goto nla_put_failure;
6592
6593 switch (rdev->wiphy.signal_type) {
6594 case CFG80211_SIGNAL_TYPE_MBM:
6595 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6596 goto nla_put_failure;
6597 break;
6598 case CFG80211_SIGNAL_TYPE_UNSPEC:
6599 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6600 goto nla_put_failure;
6601 break;
6602 default:
6603 break;
6604 }
6605
6606 switch (wdev->iftype) {
6607 case NL80211_IFTYPE_P2P_CLIENT:
6608 case NL80211_IFTYPE_STATION:
6609 if (intbss == wdev->current_bss &&
6610 nla_put_u32(msg, NL80211_BSS_STATUS,
6611 NL80211_BSS_STATUS_ASSOCIATED))
6612 goto nla_put_failure;
6613 break;
6614 case NL80211_IFTYPE_ADHOC:
6615 if (intbss == wdev->current_bss &&
6616 nla_put_u32(msg, NL80211_BSS_STATUS,
6617 NL80211_BSS_STATUS_IBSS_JOINED))
6618 goto nla_put_failure;
6619 break;
6620 default:
6621 break;
6622 }
6623
6624 nla_nest_end(msg, bss);
6625
6626 genlmsg_end(msg, hdr);
6627 return 0;
6628
6629 fail_unlock_rcu:
6630 rcu_read_unlock();
6631 nla_put_failure:
6632 genlmsg_cancel(msg, hdr);
6633 return -EMSGSIZE;
6634 }
6635
6636 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6637 {
6638 struct cfg80211_registered_device *rdev;
6639 struct cfg80211_internal_bss *scan;
6640 struct wireless_dev *wdev;
6641 int start = cb->args[2], idx = 0;
6642 int err;
6643
6644 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6645 if (err)
6646 return err;
6647
6648 wdev_lock(wdev);
6649 spin_lock_bh(&rdev->bss_lock);
6650 cfg80211_bss_expire(rdev);
6651
6652 cb->seq = rdev->bss_generation;
6653
6654 list_for_each_entry(scan, &rdev->bss_list, list) {
6655 if (++idx <= start)
6656 continue;
6657 if (nl80211_send_bss(skb, cb,
6658 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6659 rdev, wdev, scan) < 0) {
6660 idx--;
6661 break;
6662 }
6663 }
6664
6665 spin_unlock_bh(&rdev->bss_lock);
6666 wdev_unlock(wdev);
6667
6668 cb->args[2] = idx;
6669 nl80211_finish_wdev_dump(rdev);
6670
6671 return skb->len;
6672 }
6673
6674 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6675 int flags, struct net_device *dev,
6676 bool allow_radio_stats,
6677 struct survey_info *survey)
6678 {
6679 void *hdr;
6680 struct nlattr *infoattr;
6681
6682 /* skip radio stats if userspace didn't request them */
6683 if (!survey->channel && !allow_radio_stats)
6684 return 0;
6685
6686 hdr = nl80211hdr_put(msg, portid, seq, flags,
6687 NL80211_CMD_NEW_SURVEY_RESULTS);
6688 if (!hdr)
6689 return -ENOMEM;
6690
6691 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6692 goto nla_put_failure;
6693
6694 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6695 if (!infoattr)
6696 goto nla_put_failure;
6697
6698 if (survey->channel &&
6699 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6700 survey->channel->center_freq))
6701 goto nla_put_failure;
6702
6703 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6704 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6705 goto nla_put_failure;
6706 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6707 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6708 goto nla_put_failure;
6709 if ((survey->filled & SURVEY_INFO_TIME) &&
6710 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6711 survey->time))
6712 goto nla_put_failure;
6713 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6714 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6715 survey->time_busy))
6716 goto nla_put_failure;
6717 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6718 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6719 survey->time_ext_busy))
6720 goto nla_put_failure;
6721 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6722 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6723 survey->time_rx))
6724 goto nla_put_failure;
6725 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6726 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6727 survey->time_tx))
6728 goto nla_put_failure;
6729 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6730 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6731 survey->time_scan))
6732 goto nla_put_failure;
6733
6734 nla_nest_end(msg, infoattr);
6735
6736 genlmsg_end(msg, hdr);
6737 return 0;
6738
6739 nla_put_failure:
6740 genlmsg_cancel(msg, hdr);
6741 return -EMSGSIZE;
6742 }
6743
6744 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6745 {
6746 struct survey_info survey;
6747 struct cfg80211_registered_device *rdev;
6748 struct wireless_dev *wdev;
6749 int survey_idx = cb->args[2];
6750 int res;
6751 bool radio_stats;
6752
6753 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6754 if (res)
6755 return res;
6756
6757 /* prepare_wdev_dump parsed the attributes */
6758 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6759
6760 if (!wdev->netdev) {
6761 res = -EINVAL;
6762 goto out_err;
6763 }
6764
6765 if (!rdev->ops->dump_survey) {
6766 res = -EOPNOTSUPP;
6767 goto out_err;
6768 }
6769
6770 while (1) {
6771 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6772 if (res == -ENOENT)
6773 break;
6774 if (res)
6775 goto out_err;
6776
6777 /* don't send disabled channels, but do send non-channel data */
6778 if (survey.channel &&
6779 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6780 survey_idx++;
6781 continue;
6782 }
6783
6784 if (nl80211_send_survey(skb,
6785 NETLINK_CB(cb->skb).portid,
6786 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6787 wdev->netdev, radio_stats, &survey) < 0)
6788 goto out;
6789 survey_idx++;
6790 }
6791
6792 out:
6793 cb->args[2] = survey_idx;
6794 res = skb->len;
6795 out_err:
6796 nl80211_finish_wdev_dump(rdev);
6797 return res;
6798 }
6799
6800 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6801 {
6802 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6803 NL80211_WPA_VERSION_2));
6804 }
6805
6806 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6807 {
6808 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6809 struct net_device *dev = info->user_ptr[1];
6810 struct ieee80211_channel *chan;
6811 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6812 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6813 enum nl80211_auth_type auth_type;
6814 struct key_parse key;
6815 bool local_state_change;
6816
6817 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6818 return -EINVAL;
6819
6820 if (!info->attrs[NL80211_ATTR_MAC])
6821 return -EINVAL;
6822
6823 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6824 return -EINVAL;
6825
6826 if (!info->attrs[NL80211_ATTR_SSID])
6827 return -EINVAL;
6828
6829 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6830 return -EINVAL;
6831
6832 err = nl80211_parse_key(info, &key);
6833 if (err)
6834 return err;
6835
6836 if (key.idx >= 0) {
6837 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6838 return -EINVAL;
6839 if (!key.p.key || !key.p.key_len)
6840 return -EINVAL;
6841 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6842 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6843 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6844 key.p.key_len != WLAN_KEY_LEN_WEP104))
6845 return -EINVAL;
6846 if (key.idx > 4)
6847 return -EINVAL;
6848 } else {
6849 key.p.key_len = 0;
6850 key.p.key = NULL;
6851 }
6852
6853 if (key.idx >= 0) {
6854 int i;
6855 bool ok = false;
6856 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6857 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6858 ok = true;
6859 break;
6860 }
6861 }
6862 if (!ok)
6863 return -EINVAL;
6864 }
6865
6866 if (!rdev->ops->auth)
6867 return -EOPNOTSUPP;
6868
6869 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6870 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6871 return -EOPNOTSUPP;
6872
6873 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6874 chan = nl80211_get_valid_chan(&rdev->wiphy,
6875 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6876 if (!chan)
6877 return -EINVAL;
6878
6879 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6880 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6881
6882 if (info->attrs[NL80211_ATTR_IE]) {
6883 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6884 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6885 }
6886
6887 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6888 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6889 return -EINVAL;
6890
6891 if (auth_type == NL80211_AUTHTYPE_SAE &&
6892 !info->attrs[NL80211_ATTR_SAE_DATA])
6893 return -EINVAL;
6894
6895 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6896 if (auth_type != NL80211_AUTHTYPE_SAE)
6897 return -EINVAL;
6898 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6899 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6900 /* need to include at least Auth Transaction and Status Code */
6901 if (sae_data_len < 4)
6902 return -EINVAL;
6903 }
6904
6905 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6906
6907 /*
6908 * Since we no longer track auth state, ignore
6909 * requests to only change local state.
6910 */
6911 if (local_state_change)
6912 return 0;
6913
6914 wdev_lock(dev->ieee80211_ptr);
6915 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6916 ssid, ssid_len, ie, ie_len,
6917 key.p.key, key.p.key_len, key.idx,
6918 sae_data, sae_data_len);
6919 wdev_unlock(dev->ieee80211_ptr);
6920 return err;
6921 }
6922
6923 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6924 struct genl_info *info,
6925 struct cfg80211_crypto_settings *settings,
6926 int cipher_limit)
6927 {
6928 memset(settings, 0, sizeof(*settings));
6929
6930 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6931
6932 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6933 u16 proto;
6934 proto = nla_get_u16(
6935 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6936 settings->control_port_ethertype = cpu_to_be16(proto);
6937 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6938 proto != ETH_P_PAE)
6939 return -EINVAL;
6940 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6941 settings->control_port_no_encrypt = true;
6942 } else
6943 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6944
6945 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6946 void *data;
6947 int len, i;
6948
6949 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6950 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6951 settings->n_ciphers_pairwise = len / sizeof(u32);
6952
6953 if (len % sizeof(u32))
6954 return -EINVAL;
6955
6956 if (settings->n_ciphers_pairwise > cipher_limit)
6957 return -EINVAL;
6958
6959 memcpy(settings->ciphers_pairwise, data, len);
6960
6961 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6962 if (!cfg80211_supported_cipher_suite(
6963 &rdev->wiphy,
6964 settings->ciphers_pairwise[i]))
6965 return -EINVAL;
6966 }
6967
6968 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6969 settings->cipher_group =
6970 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6971 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6972 settings->cipher_group))
6973 return -EINVAL;
6974 }
6975
6976 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6977 settings->wpa_versions =
6978 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6979 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6980 return -EINVAL;
6981 }
6982
6983 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6984 void *data;
6985 int len;
6986
6987 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6988 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6989 settings->n_akm_suites = len / sizeof(u32);
6990
6991 if (len % sizeof(u32))
6992 return -EINVAL;
6993
6994 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6995 return -EINVAL;
6996
6997 memcpy(settings->akm_suites, data, len);
6998 }
6999
7000 return 0;
7001 }
7002
7003 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7004 {
7005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7006 struct net_device *dev = info->user_ptr[1];
7007 struct ieee80211_channel *chan;
7008 struct cfg80211_assoc_request req = {};
7009 const u8 *bssid, *ssid;
7010 int err, ssid_len = 0;
7011
7012 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7013 return -EINVAL;
7014
7015 if (!info->attrs[NL80211_ATTR_MAC] ||
7016 !info->attrs[NL80211_ATTR_SSID] ||
7017 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7018 return -EINVAL;
7019
7020 if (!rdev->ops->assoc)
7021 return -EOPNOTSUPP;
7022
7023 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7024 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7025 return -EOPNOTSUPP;
7026
7027 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7028
7029 chan = nl80211_get_valid_chan(&rdev->wiphy,
7030 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7031 if (!chan)
7032 return -EINVAL;
7033
7034 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7035 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7036
7037 if (info->attrs[NL80211_ATTR_IE]) {
7038 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7039 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7040 }
7041
7042 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7043 enum nl80211_mfp mfp =
7044 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7045 if (mfp == NL80211_MFP_REQUIRED)
7046 req.use_mfp = true;
7047 else if (mfp != NL80211_MFP_NO)
7048 return -EINVAL;
7049 }
7050
7051 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7052 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7053
7054 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7055 req.flags |= ASSOC_REQ_DISABLE_HT;
7056
7057 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7058 memcpy(&req.ht_capa_mask,
7059 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7060 sizeof(req.ht_capa_mask));
7061
7062 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7063 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7064 return -EINVAL;
7065 memcpy(&req.ht_capa,
7066 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7067 sizeof(req.ht_capa));
7068 }
7069
7070 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7071 req.flags |= ASSOC_REQ_DISABLE_VHT;
7072
7073 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7074 memcpy(&req.vht_capa_mask,
7075 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7076 sizeof(req.vht_capa_mask));
7077
7078 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7079 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7080 return -EINVAL;
7081 memcpy(&req.vht_capa,
7082 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7083 sizeof(req.vht_capa));
7084 }
7085
7086 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7087 if (!(rdev->wiphy.features &
7088 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7089 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7090 return -EINVAL;
7091 req.flags |= ASSOC_REQ_USE_RRM;
7092 }
7093
7094 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7095 if (!err) {
7096 wdev_lock(dev->ieee80211_ptr);
7097 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7098 ssid, ssid_len, &req);
7099 wdev_unlock(dev->ieee80211_ptr);
7100 }
7101
7102 return err;
7103 }
7104
7105 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7106 {
7107 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7108 struct net_device *dev = info->user_ptr[1];
7109 const u8 *ie = NULL, *bssid;
7110 int ie_len = 0, err;
7111 u16 reason_code;
7112 bool local_state_change;
7113
7114 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7115 return -EINVAL;
7116
7117 if (!info->attrs[NL80211_ATTR_MAC])
7118 return -EINVAL;
7119
7120 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7121 return -EINVAL;
7122
7123 if (!rdev->ops->deauth)
7124 return -EOPNOTSUPP;
7125
7126 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7127 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7128 return -EOPNOTSUPP;
7129
7130 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7131
7132 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7133 if (reason_code == 0) {
7134 /* Reason Code 0 is reserved */
7135 return -EINVAL;
7136 }
7137
7138 if (info->attrs[NL80211_ATTR_IE]) {
7139 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7140 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7141 }
7142
7143 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7144
7145 wdev_lock(dev->ieee80211_ptr);
7146 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7147 local_state_change);
7148 wdev_unlock(dev->ieee80211_ptr);
7149 return err;
7150 }
7151
7152 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7153 {
7154 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7155 struct net_device *dev = info->user_ptr[1];
7156 const u8 *ie = NULL, *bssid;
7157 int ie_len = 0, err;
7158 u16 reason_code;
7159 bool local_state_change;
7160
7161 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7162 return -EINVAL;
7163
7164 if (!info->attrs[NL80211_ATTR_MAC])
7165 return -EINVAL;
7166
7167 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7168 return -EINVAL;
7169
7170 if (!rdev->ops->disassoc)
7171 return -EOPNOTSUPP;
7172
7173 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7174 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7175 return -EOPNOTSUPP;
7176
7177 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7178
7179 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7180 if (reason_code == 0) {
7181 /* Reason Code 0 is reserved */
7182 return -EINVAL;
7183 }
7184
7185 if (info->attrs[NL80211_ATTR_IE]) {
7186 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7187 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7188 }
7189
7190 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7191
7192 wdev_lock(dev->ieee80211_ptr);
7193 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7194 local_state_change);
7195 wdev_unlock(dev->ieee80211_ptr);
7196 return err;
7197 }
7198
7199 static bool
7200 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7201 int mcast_rate[IEEE80211_NUM_BANDS],
7202 int rateval)
7203 {
7204 struct wiphy *wiphy = &rdev->wiphy;
7205 bool found = false;
7206 int band, i;
7207
7208 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7209 struct ieee80211_supported_band *sband;
7210
7211 sband = wiphy->bands[band];
7212 if (!sband)
7213 continue;
7214
7215 for (i = 0; i < sband->n_bitrates; i++) {
7216 if (sband->bitrates[i].bitrate == rateval) {
7217 mcast_rate[band] = i + 1;
7218 found = true;
7219 break;
7220 }
7221 }
7222 }
7223
7224 return found;
7225 }
7226
7227 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7228 {
7229 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7230 struct net_device *dev = info->user_ptr[1];
7231 struct cfg80211_ibss_params ibss;
7232 struct wiphy *wiphy;
7233 struct cfg80211_cached_keys *connkeys = NULL;
7234 int err;
7235
7236 memset(&ibss, 0, sizeof(ibss));
7237
7238 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7239 return -EINVAL;
7240
7241 if (!info->attrs[NL80211_ATTR_SSID] ||
7242 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7243 return -EINVAL;
7244
7245 ibss.beacon_interval = 100;
7246
7247 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7248 ibss.beacon_interval =
7249 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7250 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7251 return -EINVAL;
7252 }
7253
7254 if (!rdev->ops->join_ibss)
7255 return -EOPNOTSUPP;
7256
7257 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7258 return -EOPNOTSUPP;
7259
7260 wiphy = &rdev->wiphy;
7261
7262 if (info->attrs[NL80211_ATTR_MAC]) {
7263 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7264
7265 if (!is_valid_ether_addr(ibss.bssid))
7266 return -EINVAL;
7267 }
7268 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7269 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7270
7271 if (info->attrs[NL80211_ATTR_IE]) {
7272 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7273 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7274 }
7275
7276 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7277 if (err)
7278 return err;
7279
7280 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7281 NL80211_IFTYPE_ADHOC))
7282 return -EINVAL;
7283
7284 switch (ibss.chandef.width) {
7285 case NL80211_CHAN_WIDTH_5:
7286 case NL80211_CHAN_WIDTH_10:
7287 case NL80211_CHAN_WIDTH_20_NOHT:
7288 break;
7289 case NL80211_CHAN_WIDTH_20:
7290 case NL80211_CHAN_WIDTH_40:
7291 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7292 return -EINVAL;
7293 break;
7294 case NL80211_CHAN_WIDTH_80:
7295 case NL80211_CHAN_WIDTH_80P80:
7296 case NL80211_CHAN_WIDTH_160:
7297 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7298 return -EINVAL;
7299 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7300 NL80211_EXT_FEATURE_VHT_IBSS))
7301 return -EINVAL;
7302 break;
7303 default:
7304 return -EINVAL;
7305 }
7306
7307 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7308 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7309
7310 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7311 u8 *rates =
7312 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7313 int n_rates =
7314 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7315 struct ieee80211_supported_band *sband =
7316 wiphy->bands[ibss.chandef.chan->band];
7317
7318 err = ieee80211_get_ratemask(sband, rates, n_rates,
7319 &ibss.basic_rates);
7320 if (err)
7321 return err;
7322 }
7323
7324 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7325 memcpy(&ibss.ht_capa_mask,
7326 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7327 sizeof(ibss.ht_capa_mask));
7328
7329 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7330 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7331 return -EINVAL;
7332 memcpy(&ibss.ht_capa,
7333 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7334 sizeof(ibss.ht_capa));
7335 }
7336
7337 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7338 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7339 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7340 return -EINVAL;
7341
7342 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7343 bool no_ht = false;
7344
7345 connkeys = nl80211_parse_connkeys(rdev,
7346 info->attrs[NL80211_ATTR_KEYS],
7347 &no_ht);
7348 if (IS_ERR(connkeys))
7349 return PTR_ERR(connkeys);
7350
7351 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7352 no_ht) {
7353 kfree(connkeys);
7354 return -EINVAL;
7355 }
7356 }
7357
7358 ibss.control_port =
7359 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7360
7361 ibss.userspace_handles_dfs =
7362 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7363
7364 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7365 if (err)
7366 kzfree(connkeys);
7367 return err;
7368 }
7369
7370 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7371 {
7372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7373 struct net_device *dev = info->user_ptr[1];
7374
7375 if (!rdev->ops->leave_ibss)
7376 return -EOPNOTSUPP;
7377
7378 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7379 return -EOPNOTSUPP;
7380
7381 return cfg80211_leave_ibss(rdev, dev, false);
7382 }
7383
7384 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7385 {
7386 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7387 struct net_device *dev = info->user_ptr[1];
7388 int mcast_rate[IEEE80211_NUM_BANDS];
7389 u32 nla_rate;
7390 int err;
7391
7392 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7393 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7394 return -EOPNOTSUPP;
7395
7396 if (!rdev->ops->set_mcast_rate)
7397 return -EOPNOTSUPP;
7398
7399 memset(mcast_rate, 0, sizeof(mcast_rate));
7400
7401 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7402 return -EINVAL;
7403
7404 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7405 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7406 return -EINVAL;
7407
7408 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7409
7410 return err;
7411 }
7412
7413 static struct sk_buff *
7414 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7415 struct wireless_dev *wdev, int approxlen,
7416 u32 portid, u32 seq, enum nl80211_commands cmd,
7417 enum nl80211_attrs attr,
7418 const struct nl80211_vendor_cmd_info *info,
7419 gfp_t gfp)
7420 {
7421 struct sk_buff *skb;
7422 void *hdr;
7423 struct nlattr *data;
7424
7425 skb = nlmsg_new(approxlen + 100, gfp);
7426 if (!skb)
7427 return NULL;
7428
7429 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7430 if (!hdr) {
7431 kfree_skb(skb);
7432 return NULL;
7433 }
7434
7435 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7436 goto nla_put_failure;
7437
7438 if (info) {
7439 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7440 info->vendor_id))
7441 goto nla_put_failure;
7442 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7443 info->subcmd))
7444 goto nla_put_failure;
7445 }
7446
7447 if (wdev) {
7448 if (nla_put_u64(skb, NL80211_ATTR_WDEV,
7449 wdev_id(wdev)))
7450 goto nla_put_failure;
7451 if (wdev->netdev &&
7452 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7453 wdev->netdev->ifindex))
7454 goto nla_put_failure;
7455 }
7456
7457 data = nla_nest_start(skb, attr);
7458
7459 ((void **)skb->cb)[0] = rdev;
7460 ((void **)skb->cb)[1] = hdr;
7461 ((void **)skb->cb)[2] = data;
7462
7463 return skb;
7464
7465 nla_put_failure:
7466 kfree_skb(skb);
7467 return NULL;
7468 }
7469
7470 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7471 struct wireless_dev *wdev,
7472 enum nl80211_commands cmd,
7473 enum nl80211_attrs attr,
7474 int vendor_event_idx,
7475 int approxlen, gfp_t gfp)
7476 {
7477 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7478 const struct nl80211_vendor_cmd_info *info;
7479
7480 switch (cmd) {
7481 case NL80211_CMD_TESTMODE:
7482 if (WARN_ON(vendor_event_idx != -1))
7483 return NULL;
7484 info = NULL;
7485 break;
7486 case NL80211_CMD_VENDOR:
7487 if (WARN_ON(vendor_event_idx < 0 ||
7488 vendor_event_idx >= wiphy->n_vendor_events))
7489 return NULL;
7490 info = &wiphy->vendor_events[vendor_event_idx];
7491 break;
7492 default:
7493 WARN_ON(1);
7494 return NULL;
7495 }
7496
7497 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7498 cmd, attr, info, gfp);
7499 }
7500 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7501
7502 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7503 {
7504 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7505 void *hdr = ((void **)skb->cb)[1];
7506 struct nlattr *data = ((void **)skb->cb)[2];
7507 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7508
7509 /* clear CB data for netlink core to own from now on */
7510 memset(skb->cb, 0, sizeof(skb->cb));
7511
7512 nla_nest_end(skb, data);
7513 genlmsg_end(skb, hdr);
7514
7515 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7516 mcgrp = NL80211_MCGRP_VENDOR;
7517
7518 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7519 mcgrp, gfp);
7520 }
7521 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7522
7523 #ifdef CONFIG_NL80211_TESTMODE
7524 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7525 {
7526 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7527 struct wireless_dev *wdev =
7528 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7529 int err;
7530
7531 if (!rdev->ops->testmode_cmd)
7532 return -EOPNOTSUPP;
7533
7534 if (IS_ERR(wdev)) {
7535 err = PTR_ERR(wdev);
7536 if (err != -EINVAL)
7537 return err;
7538 wdev = NULL;
7539 } else if (wdev->wiphy != &rdev->wiphy) {
7540 return -EINVAL;
7541 }
7542
7543 if (!info->attrs[NL80211_ATTR_TESTDATA])
7544 return -EINVAL;
7545
7546 rdev->cur_cmd_info = info;
7547 err = rdev_testmode_cmd(rdev, wdev,
7548 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7549 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7550 rdev->cur_cmd_info = NULL;
7551
7552 return err;
7553 }
7554
7555 static int nl80211_testmode_dump(struct sk_buff *skb,
7556 struct netlink_callback *cb)
7557 {
7558 struct cfg80211_registered_device *rdev;
7559 int err;
7560 long phy_idx;
7561 void *data = NULL;
7562 int data_len = 0;
7563
7564 rtnl_lock();
7565
7566 if (cb->args[0]) {
7567 /*
7568 * 0 is a valid index, but not valid for args[0],
7569 * so we need to offset by 1.
7570 */
7571 phy_idx = cb->args[0] - 1;
7572 } else {
7573 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7574 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7575 nl80211_policy);
7576 if (err)
7577 goto out_err;
7578
7579 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7580 nl80211_fam.attrbuf);
7581 if (IS_ERR(rdev)) {
7582 err = PTR_ERR(rdev);
7583 goto out_err;
7584 }
7585 phy_idx = rdev->wiphy_idx;
7586 rdev = NULL;
7587
7588 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7589 cb->args[1] =
7590 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7591 }
7592
7593 if (cb->args[1]) {
7594 data = nla_data((void *)cb->args[1]);
7595 data_len = nla_len((void *)cb->args[1]);
7596 }
7597
7598 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7599 if (!rdev) {
7600 err = -ENOENT;
7601 goto out_err;
7602 }
7603
7604 if (!rdev->ops->testmode_dump) {
7605 err = -EOPNOTSUPP;
7606 goto out_err;
7607 }
7608
7609 while (1) {
7610 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7611 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7612 NL80211_CMD_TESTMODE);
7613 struct nlattr *tmdata;
7614
7615 if (!hdr)
7616 break;
7617
7618 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7619 genlmsg_cancel(skb, hdr);
7620 break;
7621 }
7622
7623 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7624 if (!tmdata) {
7625 genlmsg_cancel(skb, hdr);
7626 break;
7627 }
7628 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7629 nla_nest_end(skb, tmdata);
7630
7631 if (err == -ENOBUFS || err == -ENOENT) {
7632 genlmsg_cancel(skb, hdr);
7633 break;
7634 } else if (err) {
7635 genlmsg_cancel(skb, hdr);
7636 goto out_err;
7637 }
7638
7639 genlmsg_end(skb, hdr);
7640 }
7641
7642 err = skb->len;
7643 /* see above */
7644 cb->args[0] = phy_idx + 1;
7645 out_err:
7646 rtnl_unlock();
7647 return err;
7648 }
7649 #endif
7650
7651 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7652 {
7653 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7654 struct net_device *dev = info->user_ptr[1];
7655 struct cfg80211_connect_params connect;
7656 struct wiphy *wiphy;
7657 struct cfg80211_cached_keys *connkeys = NULL;
7658 int err;
7659
7660 memset(&connect, 0, sizeof(connect));
7661
7662 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7663 return -EINVAL;
7664
7665 if (!info->attrs[NL80211_ATTR_SSID] ||
7666 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7667 return -EINVAL;
7668
7669 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7670 connect.auth_type =
7671 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7672 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7673 NL80211_CMD_CONNECT))
7674 return -EINVAL;
7675 } else
7676 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7677
7678 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7679
7680 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7681 NL80211_MAX_NR_CIPHER_SUITES);
7682 if (err)
7683 return err;
7684
7685 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7686 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7687 return -EOPNOTSUPP;
7688
7689 wiphy = &rdev->wiphy;
7690
7691 connect.bg_scan_period = -1;
7692 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7693 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7694 connect.bg_scan_period =
7695 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7696 }
7697
7698 if (info->attrs[NL80211_ATTR_MAC])
7699 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7700 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7701 connect.bssid_hint =
7702 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7703 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7704 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7705
7706 if (info->attrs[NL80211_ATTR_IE]) {
7707 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7708 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7709 }
7710
7711 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7712 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7713 if (connect.mfp != NL80211_MFP_REQUIRED &&
7714 connect.mfp != NL80211_MFP_NO)
7715 return -EINVAL;
7716 } else {
7717 connect.mfp = NL80211_MFP_NO;
7718 }
7719
7720 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7721 connect.channel = nl80211_get_valid_chan(
7722 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7723 if (!connect.channel)
7724 return -EINVAL;
7725 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7726 connect.channel_hint = nl80211_get_valid_chan(
7727 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7728 if (!connect.channel_hint)
7729 return -EINVAL;
7730 }
7731
7732 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7733 connkeys = nl80211_parse_connkeys(rdev,
7734 info->attrs[NL80211_ATTR_KEYS], NULL);
7735 if (IS_ERR(connkeys))
7736 return PTR_ERR(connkeys);
7737 }
7738
7739 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7740 connect.flags |= ASSOC_REQ_DISABLE_HT;
7741
7742 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7743 memcpy(&connect.ht_capa_mask,
7744 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7745 sizeof(connect.ht_capa_mask));
7746
7747 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7748 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7749 kzfree(connkeys);
7750 return -EINVAL;
7751 }
7752 memcpy(&connect.ht_capa,
7753 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7754 sizeof(connect.ht_capa));
7755 }
7756
7757 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7758 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7759
7760 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7761 memcpy(&connect.vht_capa_mask,
7762 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7763 sizeof(connect.vht_capa_mask));
7764
7765 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7766 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7767 kzfree(connkeys);
7768 return -EINVAL;
7769 }
7770 memcpy(&connect.vht_capa,
7771 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7772 sizeof(connect.vht_capa));
7773 }
7774
7775 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7776 if (!(rdev->wiphy.features &
7777 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7778 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7779 return -EINVAL;
7780 connect.flags |= ASSOC_REQ_USE_RRM;
7781 }
7782
7783 wdev_lock(dev->ieee80211_ptr);
7784 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7785 wdev_unlock(dev->ieee80211_ptr);
7786 if (err)
7787 kzfree(connkeys);
7788 return err;
7789 }
7790
7791 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7792 {
7793 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7794 struct net_device *dev = info->user_ptr[1];
7795 u16 reason;
7796 int ret;
7797
7798 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7799 reason = WLAN_REASON_DEAUTH_LEAVING;
7800 else
7801 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7802
7803 if (reason == 0)
7804 return -EINVAL;
7805
7806 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7807 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7808 return -EOPNOTSUPP;
7809
7810 wdev_lock(dev->ieee80211_ptr);
7811 ret = cfg80211_disconnect(rdev, dev, reason, true);
7812 wdev_unlock(dev->ieee80211_ptr);
7813 return ret;
7814 }
7815
7816 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7817 {
7818 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7819 struct net *net;
7820 int err;
7821
7822 if (info->attrs[NL80211_ATTR_PID]) {
7823 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7824
7825 net = get_net_ns_by_pid(pid);
7826 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
7827 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
7828
7829 net = get_net_ns_by_fd(fd);
7830 } else {
7831 return -EINVAL;
7832 }
7833
7834 if (IS_ERR(net))
7835 return PTR_ERR(net);
7836
7837 err = 0;
7838
7839 /* check if anything to do */
7840 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7841 err = cfg80211_switch_netns(rdev, net);
7842
7843 put_net(net);
7844 return err;
7845 }
7846
7847 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7848 {
7849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7850 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7851 struct cfg80211_pmksa *pmksa) = NULL;
7852 struct net_device *dev = info->user_ptr[1];
7853 struct cfg80211_pmksa pmksa;
7854
7855 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7856
7857 if (!info->attrs[NL80211_ATTR_MAC])
7858 return -EINVAL;
7859
7860 if (!info->attrs[NL80211_ATTR_PMKID])
7861 return -EINVAL;
7862
7863 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7864 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7865
7866 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7867 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7868 return -EOPNOTSUPP;
7869
7870 switch (info->genlhdr->cmd) {
7871 case NL80211_CMD_SET_PMKSA:
7872 rdev_ops = rdev->ops->set_pmksa;
7873 break;
7874 case NL80211_CMD_DEL_PMKSA:
7875 rdev_ops = rdev->ops->del_pmksa;
7876 break;
7877 default:
7878 WARN_ON(1);
7879 break;
7880 }
7881
7882 if (!rdev_ops)
7883 return -EOPNOTSUPP;
7884
7885 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7886 }
7887
7888 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7889 {
7890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7891 struct net_device *dev = info->user_ptr[1];
7892
7893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7894 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7895 return -EOPNOTSUPP;
7896
7897 if (!rdev->ops->flush_pmksa)
7898 return -EOPNOTSUPP;
7899
7900 return rdev_flush_pmksa(rdev, dev);
7901 }
7902
7903 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7904 {
7905 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7906 struct net_device *dev = info->user_ptr[1];
7907 u8 action_code, dialog_token;
7908 u32 peer_capability = 0;
7909 u16 status_code;
7910 u8 *peer;
7911 bool initiator;
7912
7913 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7914 !rdev->ops->tdls_mgmt)
7915 return -EOPNOTSUPP;
7916
7917 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7918 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7919 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7920 !info->attrs[NL80211_ATTR_IE] ||
7921 !info->attrs[NL80211_ATTR_MAC])
7922 return -EINVAL;
7923
7924 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7925 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7926 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7927 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7928 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7929 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7930 peer_capability =
7931 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7932
7933 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7934 dialog_token, status_code, peer_capability,
7935 initiator,
7936 nla_data(info->attrs[NL80211_ATTR_IE]),
7937 nla_len(info->attrs[NL80211_ATTR_IE]));
7938 }
7939
7940 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7941 {
7942 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7943 struct net_device *dev = info->user_ptr[1];
7944 enum nl80211_tdls_operation operation;
7945 u8 *peer;
7946
7947 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7948 !rdev->ops->tdls_oper)
7949 return -EOPNOTSUPP;
7950
7951 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7952 !info->attrs[NL80211_ATTR_MAC])
7953 return -EINVAL;
7954
7955 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7956 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7957
7958 return rdev_tdls_oper(rdev, dev, peer, operation);
7959 }
7960
7961 static int nl80211_remain_on_channel(struct sk_buff *skb,
7962 struct genl_info *info)
7963 {
7964 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7965 struct wireless_dev *wdev = info->user_ptr[1];
7966 struct cfg80211_chan_def chandef;
7967 struct sk_buff *msg;
7968 void *hdr;
7969 u64 cookie;
7970 u32 duration;
7971 int err;
7972
7973 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7974 !info->attrs[NL80211_ATTR_DURATION])
7975 return -EINVAL;
7976
7977 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7978
7979 if (!rdev->ops->remain_on_channel ||
7980 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7981 return -EOPNOTSUPP;
7982
7983 /*
7984 * We should be on that channel for at least a minimum amount of
7985 * time (10ms) but no longer than the driver supports.
7986 */
7987 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7988 duration > rdev->wiphy.max_remain_on_channel_duration)
7989 return -EINVAL;
7990
7991 err = nl80211_parse_chandef(rdev, info, &chandef);
7992 if (err)
7993 return err;
7994
7995 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7996 if (!msg)
7997 return -ENOMEM;
7998
7999 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8000 NL80211_CMD_REMAIN_ON_CHANNEL);
8001 if (!hdr) {
8002 err = -ENOBUFS;
8003 goto free_msg;
8004 }
8005
8006 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8007 duration, &cookie);
8008
8009 if (err)
8010 goto free_msg;
8011
8012 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8013 goto nla_put_failure;
8014
8015 genlmsg_end(msg, hdr);
8016
8017 return genlmsg_reply(msg, info);
8018
8019 nla_put_failure:
8020 err = -ENOBUFS;
8021 free_msg:
8022 nlmsg_free(msg);
8023 return err;
8024 }
8025
8026 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8027 struct genl_info *info)
8028 {
8029 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8030 struct wireless_dev *wdev = info->user_ptr[1];
8031 u64 cookie;
8032
8033 if (!info->attrs[NL80211_ATTR_COOKIE])
8034 return -EINVAL;
8035
8036 if (!rdev->ops->cancel_remain_on_channel)
8037 return -EOPNOTSUPP;
8038
8039 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8040
8041 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8042 }
8043
8044 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8045 u8 *rates, u8 rates_len)
8046 {
8047 u8 i;
8048 u32 mask = 0;
8049
8050 for (i = 0; i < rates_len; i++) {
8051 int rate = (rates[i] & 0x7f) * 5;
8052 int ridx;
8053 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8054 struct ieee80211_rate *srate =
8055 &sband->bitrates[ridx];
8056 if (rate == srate->bitrate) {
8057 mask |= 1 << ridx;
8058 break;
8059 }
8060 }
8061 if (ridx == sband->n_bitrates)
8062 return 0; /* rate not found */
8063 }
8064
8065 return mask;
8066 }
8067
8068 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8069 u8 *rates, u8 rates_len,
8070 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8071 {
8072 u8 i;
8073
8074 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8075
8076 for (i = 0; i < rates_len; i++) {
8077 int ridx, rbit;
8078
8079 ridx = rates[i] / 8;
8080 rbit = BIT(rates[i] % 8);
8081
8082 /* check validity */
8083 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8084 return false;
8085
8086 /* check availability */
8087 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8088 mcs[ridx] |= rbit;
8089 else
8090 return false;
8091 }
8092
8093 return true;
8094 }
8095
8096 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8097 {
8098 u16 mcs_mask = 0;
8099
8100 switch (vht_mcs_map) {
8101 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8102 break;
8103 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8104 mcs_mask = 0x00FF;
8105 break;
8106 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8107 mcs_mask = 0x01FF;
8108 break;
8109 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8110 mcs_mask = 0x03FF;
8111 break;
8112 default:
8113 break;
8114 }
8115
8116 return mcs_mask;
8117 }
8118
8119 static void vht_build_mcs_mask(u16 vht_mcs_map,
8120 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8121 {
8122 u8 nss;
8123
8124 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8125 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8126 vht_mcs_map >>= 2;
8127 }
8128 }
8129
8130 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8131 struct nl80211_txrate_vht *txrate,
8132 u16 mcs[NL80211_VHT_NSS_MAX])
8133 {
8134 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8135 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8136 u8 i;
8137
8138 if (!sband->vht_cap.vht_supported)
8139 return false;
8140
8141 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8142
8143 /* Build vht_mcs_mask from VHT capabilities */
8144 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8145
8146 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8147 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8148 mcs[i] = txrate->mcs[i];
8149 else
8150 return false;
8151 }
8152
8153 return true;
8154 }
8155
8156 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8157 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8158 .len = NL80211_MAX_SUPP_RATES },
8159 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8160 .len = NL80211_MAX_SUPP_HT_RATES },
8161 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8162 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8163 };
8164
8165 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8166 struct genl_info *info)
8167 {
8168 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8169 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8170 struct cfg80211_bitrate_mask mask;
8171 int rem, i;
8172 struct net_device *dev = info->user_ptr[1];
8173 struct nlattr *tx_rates;
8174 struct ieee80211_supported_band *sband;
8175 u16 vht_tx_mcs_map;
8176
8177 if (!rdev->ops->set_bitrate_mask)
8178 return -EOPNOTSUPP;
8179
8180 memset(&mask, 0, sizeof(mask));
8181 /* Default to all rates enabled */
8182 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8183 sband = rdev->wiphy.bands[i];
8184
8185 if (!sband)
8186 continue;
8187
8188 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8189 memcpy(mask.control[i].ht_mcs,
8190 sband->ht_cap.mcs.rx_mask,
8191 sizeof(mask.control[i].ht_mcs));
8192
8193 if (!sband->vht_cap.vht_supported)
8194 continue;
8195
8196 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8197 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8198 }
8199
8200 /* if no rates are given set it back to the defaults */
8201 if (!info->attrs[NL80211_ATTR_TX_RATES])
8202 goto out;
8203
8204 /*
8205 * The nested attribute uses enum nl80211_band as the index. This maps
8206 * directly to the enum ieee80211_band values used in cfg80211.
8207 */
8208 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8209 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8210 enum ieee80211_band band = nla_type(tx_rates);
8211 int err;
8212
8213 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8214 return -EINVAL;
8215 sband = rdev->wiphy.bands[band];
8216 if (sband == NULL)
8217 return -EINVAL;
8218 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8219 nla_len(tx_rates), nl80211_txattr_policy);
8220 if (err)
8221 return err;
8222 if (tb[NL80211_TXRATE_LEGACY]) {
8223 mask.control[band].legacy = rateset_to_mask(
8224 sband,
8225 nla_data(tb[NL80211_TXRATE_LEGACY]),
8226 nla_len(tb[NL80211_TXRATE_LEGACY]));
8227 if ((mask.control[band].legacy == 0) &&
8228 nla_len(tb[NL80211_TXRATE_LEGACY]))
8229 return -EINVAL;
8230 }
8231 if (tb[NL80211_TXRATE_HT]) {
8232 if (!ht_rateset_to_mask(
8233 sband,
8234 nla_data(tb[NL80211_TXRATE_HT]),
8235 nla_len(tb[NL80211_TXRATE_HT]),
8236 mask.control[band].ht_mcs))
8237 return -EINVAL;
8238 }
8239 if (tb[NL80211_TXRATE_VHT]) {
8240 if (!vht_set_mcs_mask(
8241 sband,
8242 nla_data(tb[NL80211_TXRATE_VHT]),
8243 mask.control[band].vht_mcs))
8244 return -EINVAL;
8245 }
8246 if (tb[NL80211_TXRATE_GI]) {
8247 mask.control[band].gi =
8248 nla_get_u8(tb[NL80211_TXRATE_GI]);
8249 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8250 return -EINVAL;
8251 }
8252
8253 if (mask.control[band].legacy == 0) {
8254 /* don't allow empty legacy rates if HT or VHT
8255 * are not even supported.
8256 */
8257 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8258 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8259 return -EINVAL;
8260
8261 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8262 if (mask.control[band].ht_mcs[i])
8263 goto out;
8264
8265 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8266 if (mask.control[band].vht_mcs[i])
8267 goto out;
8268
8269 /* legacy and mcs rates may not be both empty */
8270 return -EINVAL;
8271 }
8272 }
8273
8274 out:
8275 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8276 }
8277
8278 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8279 {
8280 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8281 struct wireless_dev *wdev = info->user_ptr[1];
8282 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8283
8284 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8285 return -EINVAL;
8286
8287 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8288 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8289
8290 switch (wdev->iftype) {
8291 case NL80211_IFTYPE_STATION:
8292 case NL80211_IFTYPE_ADHOC:
8293 case NL80211_IFTYPE_P2P_CLIENT:
8294 case NL80211_IFTYPE_AP:
8295 case NL80211_IFTYPE_AP_VLAN:
8296 case NL80211_IFTYPE_MESH_POINT:
8297 case NL80211_IFTYPE_P2P_GO:
8298 case NL80211_IFTYPE_P2P_DEVICE:
8299 break;
8300 default:
8301 return -EOPNOTSUPP;
8302 }
8303
8304 /* not much point in registering if we can't reply */
8305 if (!rdev->ops->mgmt_tx)
8306 return -EOPNOTSUPP;
8307
8308 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8309 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8310 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8311 }
8312
8313 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8314 {
8315 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8316 struct wireless_dev *wdev = info->user_ptr[1];
8317 struct cfg80211_chan_def chandef;
8318 int err;
8319 void *hdr = NULL;
8320 u64 cookie;
8321 struct sk_buff *msg = NULL;
8322 struct cfg80211_mgmt_tx_params params = {
8323 .dont_wait_for_ack =
8324 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8325 };
8326
8327 if (!info->attrs[NL80211_ATTR_FRAME])
8328 return -EINVAL;
8329
8330 if (!rdev->ops->mgmt_tx)
8331 return -EOPNOTSUPP;
8332
8333 switch (wdev->iftype) {
8334 case NL80211_IFTYPE_P2P_DEVICE:
8335 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8336 return -EINVAL;
8337 case NL80211_IFTYPE_STATION:
8338 case NL80211_IFTYPE_ADHOC:
8339 case NL80211_IFTYPE_P2P_CLIENT:
8340 case NL80211_IFTYPE_AP:
8341 case NL80211_IFTYPE_AP_VLAN:
8342 case NL80211_IFTYPE_MESH_POINT:
8343 case NL80211_IFTYPE_P2P_GO:
8344 break;
8345 default:
8346 return -EOPNOTSUPP;
8347 }
8348
8349 if (info->attrs[NL80211_ATTR_DURATION]) {
8350 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8351 return -EINVAL;
8352 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8353
8354 /*
8355 * We should wait on the channel for at least a minimum amount
8356 * of time (10ms) but no longer than the driver supports.
8357 */
8358 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8359 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8360 return -EINVAL;
8361
8362 }
8363
8364 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8365
8366 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8367 return -EINVAL;
8368
8369 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8370
8371 /* get the channel if any has been specified, otherwise pass NULL to
8372 * the driver. The latter will use the current one
8373 */
8374 chandef.chan = NULL;
8375 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8376 err = nl80211_parse_chandef(rdev, info, &chandef);
8377 if (err)
8378 return err;
8379 }
8380
8381 if (!chandef.chan && params.offchan)
8382 return -EINVAL;
8383
8384 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8385 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8386
8387 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8388 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8389 int i;
8390
8391 if (len % sizeof(u16))
8392 return -EINVAL;
8393
8394 params.n_csa_offsets = len / sizeof(u16);
8395 params.csa_offsets =
8396 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8397
8398 /* check that all the offsets fit the frame */
8399 for (i = 0; i < params.n_csa_offsets; i++) {
8400 if (params.csa_offsets[i] >= params.len)
8401 return -EINVAL;
8402 }
8403 }
8404
8405 if (!params.dont_wait_for_ack) {
8406 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8407 if (!msg)
8408 return -ENOMEM;
8409
8410 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8411 NL80211_CMD_FRAME);
8412 if (!hdr) {
8413 err = -ENOBUFS;
8414 goto free_msg;
8415 }
8416 }
8417
8418 params.chan = chandef.chan;
8419 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8420 if (err)
8421 goto free_msg;
8422
8423 if (msg) {
8424 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8425 goto nla_put_failure;
8426
8427 genlmsg_end(msg, hdr);
8428 return genlmsg_reply(msg, info);
8429 }
8430
8431 return 0;
8432
8433 nla_put_failure:
8434 err = -ENOBUFS;
8435 free_msg:
8436 nlmsg_free(msg);
8437 return err;
8438 }
8439
8440 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8441 {
8442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8443 struct wireless_dev *wdev = info->user_ptr[1];
8444 u64 cookie;
8445
8446 if (!info->attrs[NL80211_ATTR_COOKIE])
8447 return -EINVAL;
8448
8449 if (!rdev->ops->mgmt_tx_cancel_wait)
8450 return -EOPNOTSUPP;
8451
8452 switch (wdev->iftype) {
8453 case NL80211_IFTYPE_STATION:
8454 case NL80211_IFTYPE_ADHOC:
8455 case NL80211_IFTYPE_P2P_CLIENT:
8456 case NL80211_IFTYPE_AP:
8457 case NL80211_IFTYPE_AP_VLAN:
8458 case NL80211_IFTYPE_P2P_GO:
8459 case NL80211_IFTYPE_P2P_DEVICE:
8460 break;
8461 default:
8462 return -EOPNOTSUPP;
8463 }
8464
8465 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8466
8467 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8468 }
8469
8470 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8471 {
8472 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8473 struct wireless_dev *wdev;
8474 struct net_device *dev = info->user_ptr[1];
8475 u8 ps_state;
8476 bool state;
8477 int err;
8478
8479 if (!info->attrs[NL80211_ATTR_PS_STATE])
8480 return -EINVAL;
8481
8482 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8483
8484 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8485 return -EINVAL;
8486
8487 wdev = dev->ieee80211_ptr;
8488
8489 if (!rdev->ops->set_power_mgmt)
8490 return -EOPNOTSUPP;
8491
8492 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8493
8494 if (state == wdev->ps)
8495 return 0;
8496
8497 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8498 if (!err)
8499 wdev->ps = state;
8500 return err;
8501 }
8502
8503 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8504 {
8505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8506 enum nl80211_ps_state ps_state;
8507 struct wireless_dev *wdev;
8508 struct net_device *dev = info->user_ptr[1];
8509 struct sk_buff *msg;
8510 void *hdr;
8511 int err;
8512
8513 wdev = dev->ieee80211_ptr;
8514
8515 if (!rdev->ops->set_power_mgmt)
8516 return -EOPNOTSUPP;
8517
8518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8519 if (!msg)
8520 return -ENOMEM;
8521
8522 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8523 NL80211_CMD_GET_POWER_SAVE);
8524 if (!hdr) {
8525 err = -ENOBUFS;
8526 goto free_msg;
8527 }
8528
8529 if (wdev->ps)
8530 ps_state = NL80211_PS_ENABLED;
8531 else
8532 ps_state = NL80211_PS_DISABLED;
8533
8534 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8535 goto nla_put_failure;
8536
8537 genlmsg_end(msg, hdr);
8538 return genlmsg_reply(msg, info);
8539
8540 nla_put_failure:
8541 err = -ENOBUFS;
8542 free_msg:
8543 nlmsg_free(msg);
8544 return err;
8545 }
8546
8547 static const struct nla_policy
8548 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8549 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8550 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8551 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8552 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8553 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8554 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8555 };
8556
8557 static int nl80211_set_cqm_txe(struct genl_info *info,
8558 u32 rate, u32 pkts, u32 intvl)
8559 {
8560 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8561 struct net_device *dev = info->user_ptr[1];
8562 struct wireless_dev *wdev = dev->ieee80211_ptr;
8563
8564 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8565 return -EINVAL;
8566
8567 if (!rdev->ops->set_cqm_txe_config)
8568 return -EOPNOTSUPP;
8569
8570 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8571 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8572 return -EOPNOTSUPP;
8573
8574 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8575 }
8576
8577 static int nl80211_set_cqm_rssi(struct genl_info *info,
8578 s32 threshold, u32 hysteresis)
8579 {
8580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8581 struct net_device *dev = info->user_ptr[1];
8582 struct wireless_dev *wdev = dev->ieee80211_ptr;
8583
8584 if (threshold > 0)
8585 return -EINVAL;
8586
8587 /* disabling - hysteresis should also be zero then */
8588 if (threshold == 0)
8589 hysteresis = 0;
8590
8591 if (!rdev->ops->set_cqm_rssi_config)
8592 return -EOPNOTSUPP;
8593
8594 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8595 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8596 return -EOPNOTSUPP;
8597
8598 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8599 }
8600
8601 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8602 {
8603 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8604 struct nlattr *cqm;
8605 int err;
8606
8607 cqm = info->attrs[NL80211_ATTR_CQM];
8608 if (!cqm)
8609 return -EINVAL;
8610
8611 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8612 nl80211_attr_cqm_policy);
8613 if (err)
8614 return err;
8615
8616 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8617 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8618 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8619 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8620
8621 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8622 }
8623
8624 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8625 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8626 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8627 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8628 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8629 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8630
8631 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8632 }
8633
8634 return -EINVAL;
8635 }
8636
8637 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8638 {
8639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8640 struct net_device *dev = info->user_ptr[1];
8641 struct ocb_setup setup = {};
8642 int err;
8643
8644 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8645 if (err)
8646 return err;
8647
8648 return cfg80211_join_ocb(rdev, dev, &setup);
8649 }
8650
8651 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8652 {
8653 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8654 struct net_device *dev = info->user_ptr[1];
8655
8656 return cfg80211_leave_ocb(rdev, dev);
8657 }
8658
8659 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8660 {
8661 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8662 struct net_device *dev = info->user_ptr[1];
8663 struct mesh_config cfg;
8664 struct mesh_setup setup;
8665 int err;
8666
8667 /* start with default */
8668 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8669 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8670
8671 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8672 /* and parse parameters if given */
8673 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8674 if (err)
8675 return err;
8676 }
8677
8678 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8679 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8680 return -EINVAL;
8681
8682 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8683 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8684
8685 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8686 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8687 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8688 return -EINVAL;
8689
8690 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8691 setup.beacon_interval =
8692 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8693 if (setup.beacon_interval < 10 ||
8694 setup.beacon_interval > 10000)
8695 return -EINVAL;
8696 }
8697
8698 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8699 setup.dtim_period =
8700 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8701 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8702 return -EINVAL;
8703 }
8704
8705 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8706 /* parse additional setup parameters if given */
8707 err = nl80211_parse_mesh_setup(info, &setup);
8708 if (err)
8709 return err;
8710 }
8711
8712 if (setup.user_mpm)
8713 cfg.auto_open_plinks = false;
8714
8715 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8716 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8717 if (err)
8718 return err;
8719 } else {
8720 /* cfg80211_join_mesh() will sort it out */
8721 setup.chandef.chan = NULL;
8722 }
8723
8724 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8725 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8726 int n_rates =
8727 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8728 struct ieee80211_supported_band *sband;
8729
8730 if (!setup.chandef.chan)
8731 return -EINVAL;
8732
8733 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8734
8735 err = ieee80211_get_ratemask(sband, rates, n_rates,
8736 &setup.basic_rates);
8737 if (err)
8738 return err;
8739 }
8740
8741 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8742 }
8743
8744 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8745 {
8746 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8747 struct net_device *dev = info->user_ptr[1];
8748
8749 return cfg80211_leave_mesh(rdev, dev);
8750 }
8751
8752 #ifdef CONFIG_PM
8753 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8754 struct cfg80211_registered_device *rdev)
8755 {
8756 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8757 struct nlattr *nl_pats, *nl_pat;
8758 int i, pat_len;
8759
8760 if (!wowlan->n_patterns)
8761 return 0;
8762
8763 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8764 if (!nl_pats)
8765 return -ENOBUFS;
8766
8767 for (i = 0; i < wowlan->n_patterns; i++) {
8768 nl_pat = nla_nest_start(msg, i + 1);
8769 if (!nl_pat)
8770 return -ENOBUFS;
8771 pat_len = wowlan->patterns[i].pattern_len;
8772 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8773 wowlan->patterns[i].mask) ||
8774 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8775 wowlan->patterns[i].pattern) ||
8776 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8777 wowlan->patterns[i].pkt_offset))
8778 return -ENOBUFS;
8779 nla_nest_end(msg, nl_pat);
8780 }
8781 nla_nest_end(msg, nl_pats);
8782
8783 return 0;
8784 }
8785
8786 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8787 struct cfg80211_wowlan_tcp *tcp)
8788 {
8789 struct nlattr *nl_tcp;
8790
8791 if (!tcp)
8792 return 0;
8793
8794 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8795 if (!nl_tcp)
8796 return -ENOBUFS;
8797
8798 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8799 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8800 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8801 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8802 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8803 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8804 tcp->payload_len, tcp->payload) ||
8805 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8806 tcp->data_interval) ||
8807 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8808 tcp->wake_len, tcp->wake_data) ||
8809 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8810 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8811 return -ENOBUFS;
8812
8813 if (tcp->payload_seq.len &&
8814 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8815 sizeof(tcp->payload_seq), &tcp->payload_seq))
8816 return -ENOBUFS;
8817
8818 if (tcp->payload_tok.len &&
8819 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8820 sizeof(tcp->payload_tok) + tcp->tokens_size,
8821 &tcp->payload_tok))
8822 return -ENOBUFS;
8823
8824 nla_nest_end(msg, nl_tcp);
8825
8826 return 0;
8827 }
8828
8829 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8830 struct cfg80211_sched_scan_request *req)
8831 {
8832 struct nlattr *nd, *freqs, *matches, *match;
8833 int i;
8834
8835 if (!req)
8836 return 0;
8837
8838 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8839 if (!nd)
8840 return -ENOBUFS;
8841
8842 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8843 return -ENOBUFS;
8844
8845 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
8846 return -ENOBUFS;
8847
8848 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8849 if (!freqs)
8850 return -ENOBUFS;
8851
8852 for (i = 0; i < req->n_channels; i++)
8853 nla_put_u32(msg, i, req->channels[i]->center_freq);
8854
8855 nla_nest_end(msg, freqs);
8856
8857 if (req->n_match_sets) {
8858 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8859 for (i = 0; i < req->n_match_sets; i++) {
8860 match = nla_nest_start(msg, i);
8861 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8862 req->match_sets[i].ssid.ssid_len,
8863 req->match_sets[i].ssid.ssid);
8864 nla_nest_end(msg, match);
8865 }
8866 nla_nest_end(msg, matches);
8867 }
8868
8869 nla_nest_end(msg, nd);
8870
8871 return 0;
8872 }
8873
8874 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8875 {
8876 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8877 struct sk_buff *msg;
8878 void *hdr;
8879 u32 size = NLMSG_DEFAULT_SIZE;
8880
8881 if (!rdev->wiphy.wowlan)
8882 return -EOPNOTSUPP;
8883
8884 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8885 /* adjust size to have room for all the data */
8886 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8887 rdev->wiphy.wowlan_config->tcp->payload_len +
8888 rdev->wiphy.wowlan_config->tcp->wake_len +
8889 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8890 }
8891
8892 msg = nlmsg_new(size, GFP_KERNEL);
8893 if (!msg)
8894 return -ENOMEM;
8895
8896 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8897 NL80211_CMD_GET_WOWLAN);
8898 if (!hdr)
8899 goto nla_put_failure;
8900
8901 if (rdev->wiphy.wowlan_config) {
8902 struct nlattr *nl_wowlan;
8903
8904 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8905 if (!nl_wowlan)
8906 goto nla_put_failure;
8907
8908 if ((rdev->wiphy.wowlan_config->any &&
8909 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8910 (rdev->wiphy.wowlan_config->disconnect &&
8911 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8912 (rdev->wiphy.wowlan_config->magic_pkt &&
8913 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8914 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8915 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8916 (rdev->wiphy.wowlan_config->eap_identity_req &&
8917 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8918 (rdev->wiphy.wowlan_config->four_way_handshake &&
8919 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8920 (rdev->wiphy.wowlan_config->rfkill_release &&
8921 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8922 goto nla_put_failure;
8923
8924 if (nl80211_send_wowlan_patterns(msg, rdev))
8925 goto nla_put_failure;
8926
8927 if (nl80211_send_wowlan_tcp(msg,
8928 rdev->wiphy.wowlan_config->tcp))
8929 goto nla_put_failure;
8930
8931 if (nl80211_send_wowlan_nd(
8932 msg,
8933 rdev->wiphy.wowlan_config->nd_config))
8934 goto nla_put_failure;
8935
8936 nla_nest_end(msg, nl_wowlan);
8937 }
8938
8939 genlmsg_end(msg, hdr);
8940 return genlmsg_reply(msg, info);
8941
8942 nla_put_failure:
8943 nlmsg_free(msg);
8944 return -ENOBUFS;
8945 }
8946
8947 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8948 struct nlattr *attr,
8949 struct cfg80211_wowlan *trig)
8950 {
8951 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8952 struct cfg80211_wowlan_tcp *cfg;
8953 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8954 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8955 u32 size;
8956 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8957 int err, port;
8958
8959 if (!rdev->wiphy.wowlan->tcp)
8960 return -EINVAL;
8961
8962 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8963 nla_data(attr), nla_len(attr),
8964 nl80211_wowlan_tcp_policy);
8965 if (err)
8966 return err;
8967
8968 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8969 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8970 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8971 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8972 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8973 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8974 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8975 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8976 return -EINVAL;
8977
8978 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8979 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8980 return -EINVAL;
8981
8982 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8983 rdev->wiphy.wowlan->tcp->data_interval_max ||
8984 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8985 return -EINVAL;
8986
8987 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8988 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8989 return -EINVAL;
8990
8991 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8992 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8993 return -EINVAL;
8994
8995 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8996 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8997
8998 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8999 tokens_size = tokln - sizeof(*tok);
9000
9001 if (!tok->len || tokens_size % tok->len)
9002 return -EINVAL;
9003 if (!rdev->wiphy.wowlan->tcp->tok)
9004 return -EINVAL;
9005 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9006 return -EINVAL;
9007 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9008 return -EINVAL;
9009 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9010 return -EINVAL;
9011 if (tok->offset + tok->len > data_size)
9012 return -EINVAL;
9013 }
9014
9015 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9016 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9017 if (!rdev->wiphy.wowlan->tcp->seq)
9018 return -EINVAL;
9019 if (seq->len == 0 || seq->len > 4)
9020 return -EINVAL;
9021 if (seq->len + seq->offset > data_size)
9022 return -EINVAL;
9023 }
9024
9025 size = sizeof(*cfg);
9026 size += data_size;
9027 size += wake_size + wake_mask_size;
9028 size += tokens_size;
9029
9030 cfg = kzalloc(size, GFP_KERNEL);
9031 if (!cfg)
9032 return -ENOMEM;
9033 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9034 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9035 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9036 ETH_ALEN);
9037 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9038 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9039 else
9040 port = 0;
9041 #ifdef CONFIG_INET
9042 /* allocate a socket and port for it and use it */
9043 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9044 IPPROTO_TCP, &cfg->sock, 1);
9045 if (err) {
9046 kfree(cfg);
9047 return err;
9048 }
9049 if (inet_csk_get_port(cfg->sock->sk, port)) {
9050 sock_release(cfg->sock);
9051 kfree(cfg);
9052 return -EADDRINUSE;
9053 }
9054 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9055 #else
9056 if (!port) {
9057 kfree(cfg);
9058 return -EINVAL;
9059 }
9060 cfg->src_port = port;
9061 #endif
9062
9063 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9064 cfg->payload_len = data_size;
9065 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9066 memcpy((void *)cfg->payload,
9067 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9068 data_size);
9069 if (seq)
9070 cfg->payload_seq = *seq;
9071 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9072 cfg->wake_len = wake_size;
9073 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9074 memcpy((void *)cfg->wake_data,
9075 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9076 wake_size);
9077 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9078 data_size + wake_size;
9079 memcpy((void *)cfg->wake_mask,
9080 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9081 wake_mask_size);
9082 if (tok) {
9083 cfg->tokens_size = tokens_size;
9084 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9085 }
9086
9087 trig->tcp = cfg;
9088
9089 return 0;
9090 }
9091
9092 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9093 const struct wiphy_wowlan_support *wowlan,
9094 struct nlattr *attr,
9095 struct cfg80211_wowlan *trig)
9096 {
9097 struct nlattr **tb;
9098 int err;
9099
9100 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9101 if (!tb)
9102 return -ENOMEM;
9103
9104 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9105 err = -EOPNOTSUPP;
9106 goto out;
9107 }
9108
9109 err = nla_parse(tb, NL80211_ATTR_MAX,
9110 nla_data(attr), nla_len(attr),
9111 nl80211_policy);
9112 if (err)
9113 goto out;
9114
9115 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9116 err = PTR_ERR_OR_ZERO(trig->nd_config);
9117 if (err)
9118 trig->nd_config = NULL;
9119
9120 out:
9121 kfree(tb);
9122 return err;
9123 }
9124
9125 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9126 {
9127 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9128 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9129 struct cfg80211_wowlan new_triggers = {};
9130 struct cfg80211_wowlan *ntrig;
9131 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9132 int err, i;
9133 bool prev_enabled = rdev->wiphy.wowlan_config;
9134 bool regular = false;
9135
9136 if (!wowlan)
9137 return -EOPNOTSUPP;
9138
9139 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9140 cfg80211_rdev_free_wowlan(rdev);
9141 rdev->wiphy.wowlan_config = NULL;
9142 goto set_wakeup;
9143 }
9144
9145 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9146 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9147 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9148 nl80211_wowlan_policy);
9149 if (err)
9150 return err;
9151
9152 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9153 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9154 return -EINVAL;
9155 new_triggers.any = true;
9156 }
9157
9158 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9159 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9160 return -EINVAL;
9161 new_triggers.disconnect = true;
9162 regular = true;
9163 }
9164
9165 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9166 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9167 return -EINVAL;
9168 new_triggers.magic_pkt = true;
9169 regular = true;
9170 }
9171
9172 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9173 return -EINVAL;
9174
9175 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9176 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9177 return -EINVAL;
9178 new_triggers.gtk_rekey_failure = true;
9179 regular = true;
9180 }
9181
9182 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9183 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9184 return -EINVAL;
9185 new_triggers.eap_identity_req = true;
9186 regular = true;
9187 }
9188
9189 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9190 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9191 return -EINVAL;
9192 new_triggers.four_way_handshake = true;
9193 regular = true;
9194 }
9195
9196 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9197 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9198 return -EINVAL;
9199 new_triggers.rfkill_release = true;
9200 regular = true;
9201 }
9202
9203 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9204 struct nlattr *pat;
9205 int n_patterns = 0;
9206 int rem, pat_len, mask_len, pkt_offset;
9207 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9208
9209 regular = true;
9210
9211 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9212 rem)
9213 n_patterns++;
9214 if (n_patterns > wowlan->n_patterns)
9215 return -EINVAL;
9216
9217 new_triggers.patterns = kcalloc(n_patterns,
9218 sizeof(new_triggers.patterns[0]),
9219 GFP_KERNEL);
9220 if (!new_triggers.patterns)
9221 return -ENOMEM;
9222
9223 new_triggers.n_patterns = n_patterns;
9224 i = 0;
9225
9226 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9227 rem) {
9228 u8 *mask_pat;
9229
9230 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9231 nla_len(pat), NULL);
9232 err = -EINVAL;
9233 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9234 !pat_tb[NL80211_PKTPAT_PATTERN])
9235 goto error;
9236 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9237 mask_len = DIV_ROUND_UP(pat_len, 8);
9238 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9239 goto error;
9240 if (pat_len > wowlan->pattern_max_len ||
9241 pat_len < wowlan->pattern_min_len)
9242 goto error;
9243
9244 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9245 pkt_offset = 0;
9246 else
9247 pkt_offset = nla_get_u32(
9248 pat_tb[NL80211_PKTPAT_OFFSET]);
9249 if (pkt_offset > wowlan->max_pkt_offset)
9250 goto error;
9251 new_triggers.patterns[i].pkt_offset = pkt_offset;
9252
9253 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9254 if (!mask_pat) {
9255 err = -ENOMEM;
9256 goto error;
9257 }
9258 new_triggers.patterns[i].mask = mask_pat;
9259 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9260 mask_len);
9261 mask_pat += mask_len;
9262 new_triggers.patterns[i].pattern = mask_pat;
9263 new_triggers.patterns[i].pattern_len = pat_len;
9264 memcpy(mask_pat,
9265 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9266 pat_len);
9267 i++;
9268 }
9269 }
9270
9271 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9272 regular = true;
9273 err = nl80211_parse_wowlan_tcp(
9274 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9275 &new_triggers);
9276 if (err)
9277 goto error;
9278 }
9279
9280 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9281 regular = true;
9282 err = nl80211_parse_wowlan_nd(
9283 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9284 &new_triggers);
9285 if (err)
9286 goto error;
9287 }
9288
9289 /* The 'any' trigger means the device continues operating more or less
9290 * as in its normal operation mode and wakes up the host on most of the
9291 * normal interrupts (like packet RX, ...)
9292 * It therefore makes little sense to combine with the more constrained
9293 * wakeup trigger modes.
9294 */
9295 if (new_triggers.any && regular) {
9296 err = -EINVAL;
9297 goto error;
9298 }
9299
9300 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9301 if (!ntrig) {
9302 err = -ENOMEM;
9303 goto error;
9304 }
9305 cfg80211_rdev_free_wowlan(rdev);
9306 rdev->wiphy.wowlan_config = ntrig;
9307
9308 set_wakeup:
9309 if (rdev->ops->set_wakeup &&
9310 prev_enabled != !!rdev->wiphy.wowlan_config)
9311 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9312
9313 return 0;
9314 error:
9315 for (i = 0; i < new_triggers.n_patterns; i++)
9316 kfree(new_triggers.patterns[i].mask);
9317 kfree(new_triggers.patterns);
9318 if (new_triggers.tcp && new_triggers.tcp->sock)
9319 sock_release(new_triggers.tcp->sock);
9320 kfree(new_triggers.tcp);
9321 return err;
9322 }
9323 #endif
9324
9325 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9326 struct cfg80211_registered_device *rdev)
9327 {
9328 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9329 int i, j, pat_len;
9330 struct cfg80211_coalesce_rules *rule;
9331
9332 if (!rdev->coalesce->n_rules)
9333 return 0;
9334
9335 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9336 if (!nl_rules)
9337 return -ENOBUFS;
9338
9339 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9340 nl_rule = nla_nest_start(msg, i + 1);
9341 if (!nl_rule)
9342 return -ENOBUFS;
9343
9344 rule = &rdev->coalesce->rules[i];
9345 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9346 rule->delay))
9347 return -ENOBUFS;
9348
9349 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9350 rule->condition))
9351 return -ENOBUFS;
9352
9353 nl_pats = nla_nest_start(msg,
9354 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9355 if (!nl_pats)
9356 return -ENOBUFS;
9357
9358 for (j = 0; j < rule->n_patterns; j++) {
9359 nl_pat = nla_nest_start(msg, j + 1);
9360 if (!nl_pat)
9361 return -ENOBUFS;
9362 pat_len = rule->patterns[j].pattern_len;
9363 if (nla_put(msg, NL80211_PKTPAT_MASK,
9364 DIV_ROUND_UP(pat_len, 8),
9365 rule->patterns[j].mask) ||
9366 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9367 rule->patterns[j].pattern) ||
9368 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9369 rule->patterns[j].pkt_offset))
9370 return -ENOBUFS;
9371 nla_nest_end(msg, nl_pat);
9372 }
9373 nla_nest_end(msg, nl_pats);
9374 nla_nest_end(msg, nl_rule);
9375 }
9376 nla_nest_end(msg, nl_rules);
9377
9378 return 0;
9379 }
9380
9381 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9382 {
9383 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9384 struct sk_buff *msg;
9385 void *hdr;
9386
9387 if (!rdev->wiphy.coalesce)
9388 return -EOPNOTSUPP;
9389
9390 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9391 if (!msg)
9392 return -ENOMEM;
9393
9394 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9395 NL80211_CMD_GET_COALESCE);
9396 if (!hdr)
9397 goto nla_put_failure;
9398
9399 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9400 goto nla_put_failure;
9401
9402 genlmsg_end(msg, hdr);
9403 return genlmsg_reply(msg, info);
9404
9405 nla_put_failure:
9406 nlmsg_free(msg);
9407 return -ENOBUFS;
9408 }
9409
9410 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9411 {
9412 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9413 int i, j;
9414 struct cfg80211_coalesce_rules *rule;
9415
9416 if (!coalesce)
9417 return;
9418
9419 for (i = 0; i < coalesce->n_rules; i++) {
9420 rule = &coalesce->rules[i];
9421 for (j = 0; j < rule->n_patterns; j++)
9422 kfree(rule->patterns[j].mask);
9423 kfree(rule->patterns);
9424 }
9425 kfree(coalesce->rules);
9426 kfree(coalesce);
9427 rdev->coalesce = NULL;
9428 }
9429
9430 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9431 struct nlattr *rule,
9432 struct cfg80211_coalesce_rules *new_rule)
9433 {
9434 int err, i;
9435 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9436 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9437 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9438 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9439
9440 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9441 nla_len(rule), nl80211_coalesce_policy);
9442 if (err)
9443 return err;
9444
9445 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9446 new_rule->delay =
9447 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9448 if (new_rule->delay > coalesce->max_delay)
9449 return -EINVAL;
9450
9451 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9452 new_rule->condition =
9453 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9454 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9455 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9456 return -EINVAL;
9457
9458 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9459 return -EINVAL;
9460
9461 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9462 rem)
9463 n_patterns++;
9464 if (n_patterns > coalesce->n_patterns)
9465 return -EINVAL;
9466
9467 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9468 GFP_KERNEL);
9469 if (!new_rule->patterns)
9470 return -ENOMEM;
9471
9472 new_rule->n_patterns = n_patterns;
9473 i = 0;
9474
9475 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9476 rem) {
9477 u8 *mask_pat;
9478
9479 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9480 nla_len(pat), NULL);
9481 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9482 !pat_tb[NL80211_PKTPAT_PATTERN])
9483 return -EINVAL;
9484 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9485 mask_len = DIV_ROUND_UP(pat_len, 8);
9486 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9487 return -EINVAL;
9488 if (pat_len > coalesce->pattern_max_len ||
9489 pat_len < coalesce->pattern_min_len)
9490 return -EINVAL;
9491
9492 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9493 pkt_offset = 0;
9494 else
9495 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9496 if (pkt_offset > coalesce->max_pkt_offset)
9497 return -EINVAL;
9498 new_rule->patterns[i].pkt_offset = pkt_offset;
9499
9500 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9501 if (!mask_pat)
9502 return -ENOMEM;
9503
9504 new_rule->patterns[i].mask = mask_pat;
9505 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9506 mask_len);
9507
9508 mask_pat += mask_len;
9509 new_rule->patterns[i].pattern = mask_pat;
9510 new_rule->patterns[i].pattern_len = pat_len;
9511 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9512 pat_len);
9513 i++;
9514 }
9515
9516 return 0;
9517 }
9518
9519 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9520 {
9521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9522 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9523 struct cfg80211_coalesce new_coalesce = {};
9524 struct cfg80211_coalesce *n_coalesce;
9525 int err, rem_rule, n_rules = 0, i, j;
9526 struct nlattr *rule;
9527 struct cfg80211_coalesce_rules *tmp_rule;
9528
9529 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9530 return -EOPNOTSUPP;
9531
9532 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9533 cfg80211_rdev_free_coalesce(rdev);
9534 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9535 return 0;
9536 }
9537
9538 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9539 rem_rule)
9540 n_rules++;
9541 if (n_rules > coalesce->n_rules)
9542 return -EINVAL;
9543
9544 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9545 GFP_KERNEL);
9546 if (!new_coalesce.rules)
9547 return -ENOMEM;
9548
9549 new_coalesce.n_rules = n_rules;
9550 i = 0;
9551
9552 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9553 rem_rule) {
9554 err = nl80211_parse_coalesce_rule(rdev, rule,
9555 &new_coalesce.rules[i]);
9556 if (err)
9557 goto error;
9558
9559 i++;
9560 }
9561
9562 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9563 if (err)
9564 goto error;
9565
9566 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9567 if (!n_coalesce) {
9568 err = -ENOMEM;
9569 goto error;
9570 }
9571 cfg80211_rdev_free_coalesce(rdev);
9572 rdev->coalesce = n_coalesce;
9573
9574 return 0;
9575 error:
9576 for (i = 0; i < new_coalesce.n_rules; i++) {
9577 tmp_rule = &new_coalesce.rules[i];
9578 for (j = 0; j < tmp_rule->n_patterns; j++)
9579 kfree(tmp_rule->patterns[j].mask);
9580 kfree(tmp_rule->patterns);
9581 }
9582 kfree(new_coalesce.rules);
9583
9584 return err;
9585 }
9586
9587 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9588 {
9589 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9590 struct net_device *dev = info->user_ptr[1];
9591 struct wireless_dev *wdev = dev->ieee80211_ptr;
9592 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9593 struct cfg80211_gtk_rekey_data rekey_data;
9594 int err;
9595
9596 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9597 return -EINVAL;
9598
9599 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9600 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9601 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9602 nl80211_rekey_policy);
9603 if (err)
9604 return err;
9605
9606 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9607 return -ERANGE;
9608 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9609 return -ERANGE;
9610 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9611 return -ERANGE;
9612
9613 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9614 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9615 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9616
9617 wdev_lock(wdev);
9618 if (!wdev->current_bss) {
9619 err = -ENOTCONN;
9620 goto out;
9621 }
9622
9623 if (!rdev->ops->set_rekey_data) {
9624 err = -EOPNOTSUPP;
9625 goto out;
9626 }
9627
9628 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9629 out:
9630 wdev_unlock(wdev);
9631 return err;
9632 }
9633
9634 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9635 struct genl_info *info)
9636 {
9637 struct net_device *dev = info->user_ptr[1];
9638 struct wireless_dev *wdev = dev->ieee80211_ptr;
9639
9640 if (wdev->iftype != NL80211_IFTYPE_AP &&
9641 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9642 return -EINVAL;
9643
9644 if (wdev->ap_unexpected_nlportid)
9645 return -EBUSY;
9646
9647 wdev->ap_unexpected_nlportid = info->snd_portid;
9648 return 0;
9649 }
9650
9651 static int nl80211_probe_client(struct sk_buff *skb,
9652 struct genl_info *info)
9653 {
9654 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9655 struct net_device *dev = info->user_ptr[1];
9656 struct wireless_dev *wdev = dev->ieee80211_ptr;
9657 struct sk_buff *msg;
9658 void *hdr;
9659 const u8 *addr;
9660 u64 cookie;
9661 int err;
9662
9663 if (wdev->iftype != NL80211_IFTYPE_AP &&
9664 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9665 return -EOPNOTSUPP;
9666
9667 if (!info->attrs[NL80211_ATTR_MAC])
9668 return -EINVAL;
9669
9670 if (!rdev->ops->probe_client)
9671 return -EOPNOTSUPP;
9672
9673 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9674 if (!msg)
9675 return -ENOMEM;
9676
9677 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9678 NL80211_CMD_PROBE_CLIENT);
9679 if (!hdr) {
9680 err = -ENOBUFS;
9681 goto free_msg;
9682 }
9683
9684 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9685
9686 err = rdev_probe_client(rdev, dev, addr, &cookie);
9687 if (err)
9688 goto free_msg;
9689
9690 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9691 goto nla_put_failure;
9692
9693 genlmsg_end(msg, hdr);
9694
9695 return genlmsg_reply(msg, info);
9696
9697 nla_put_failure:
9698 err = -ENOBUFS;
9699 free_msg:
9700 nlmsg_free(msg);
9701 return err;
9702 }
9703
9704 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9705 {
9706 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9707 struct cfg80211_beacon_registration *reg, *nreg;
9708 int rv;
9709
9710 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9711 return -EOPNOTSUPP;
9712
9713 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9714 if (!nreg)
9715 return -ENOMEM;
9716
9717 /* First, check if already registered. */
9718 spin_lock_bh(&rdev->beacon_registrations_lock);
9719 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9720 if (reg->nlportid == info->snd_portid) {
9721 rv = -EALREADY;
9722 goto out_err;
9723 }
9724 }
9725 /* Add it to the list */
9726 nreg->nlportid = info->snd_portid;
9727 list_add(&nreg->list, &rdev->beacon_registrations);
9728
9729 spin_unlock_bh(&rdev->beacon_registrations_lock);
9730
9731 return 0;
9732 out_err:
9733 spin_unlock_bh(&rdev->beacon_registrations_lock);
9734 kfree(nreg);
9735 return rv;
9736 }
9737
9738 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9739 {
9740 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9741 struct wireless_dev *wdev = info->user_ptr[1];
9742 int err;
9743
9744 if (!rdev->ops->start_p2p_device)
9745 return -EOPNOTSUPP;
9746
9747 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9748 return -EOPNOTSUPP;
9749
9750 if (wdev->p2p_started)
9751 return 0;
9752
9753 if (rfkill_blocked(rdev->rfkill))
9754 return -ERFKILL;
9755
9756 err = rdev_start_p2p_device(rdev, wdev);
9757 if (err)
9758 return err;
9759
9760 wdev->p2p_started = true;
9761 rdev->opencount++;
9762
9763 return 0;
9764 }
9765
9766 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9767 {
9768 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9769 struct wireless_dev *wdev = info->user_ptr[1];
9770
9771 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9772 return -EOPNOTSUPP;
9773
9774 if (!rdev->ops->stop_p2p_device)
9775 return -EOPNOTSUPP;
9776
9777 cfg80211_stop_p2p_device(rdev, wdev);
9778
9779 return 0;
9780 }
9781
9782 static int nl80211_get_protocol_features(struct sk_buff *skb,
9783 struct genl_info *info)
9784 {
9785 void *hdr;
9786 struct sk_buff *msg;
9787
9788 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9789 if (!msg)
9790 return -ENOMEM;
9791
9792 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9793 NL80211_CMD_GET_PROTOCOL_FEATURES);
9794 if (!hdr)
9795 goto nla_put_failure;
9796
9797 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9798 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9799 goto nla_put_failure;
9800
9801 genlmsg_end(msg, hdr);
9802 return genlmsg_reply(msg, info);
9803
9804 nla_put_failure:
9805 kfree_skb(msg);
9806 return -ENOBUFS;
9807 }
9808
9809 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9810 {
9811 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9812 struct cfg80211_update_ft_ies_params ft_params;
9813 struct net_device *dev = info->user_ptr[1];
9814
9815 if (!rdev->ops->update_ft_ies)
9816 return -EOPNOTSUPP;
9817
9818 if (!info->attrs[NL80211_ATTR_MDID] ||
9819 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9820 return -EINVAL;
9821
9822 memset(&ft_params, 0, sizeof(ft_params));
9823 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9824 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9825 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9826
9827 return rdev_update_ft_ies(rdev, dev, &ft_params);
9828 }
9829
9830 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9831 struct genl_info *info)
9832 {
9833 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9834 struct wireless_dev *wdev = info->user_ptr[1];
9835 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9836 u16 duration;
9837 int ret;
9838
9839 if (!rdev->ops->crit_proto_start)
9840 return -EOPNOTSUPP;
9841
9842 if (WARN_ON(!rdev->ops->crit_proto_stop))
9843 return -EINVAL;
9844
9845 if (rdev->crit_proto_nlportid)
9846 return -EBUSY;
9847
9848 /* determine protocol if provided */
9849 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9850 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9851
9852 if (proto >= NUM_NL80211_CRIT_PROTO)
9853 return -EINVAL;
9854
9855 /* timeout must be provided */
9856 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9857 return -EINVAL;
9858
9859 duration =
9860 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9861
9862 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9863 return -ERANGE;
9864
9865 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9866 if (!ret)
9867 rdev->crit_proto_nlportid = info->snd_portid;
9868
9869 return ret;
9870 }
9871
9872 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9873 struct genl_info *info)
9874 {
9875 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9876 struct wireless_dev *wdev = info->user_ptr[1];
9877
9878 if (!rdev->ops->crit_proto_stop)
9879 return -EOPNOTSUPP;
9880
9881 if (rdev->crit_proto_nlportid) {
9882 rdev->crit_proto_nlportid = 0;
9883 rdev_crit_proto_stop(rdev, wdev);
9884 }
9885 return 0;
9886 }
9887
9888 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9889 {
9890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9891 struct wireless_dev *wdev =
9892 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9893 int i, err;
9894 u32 vid, subcmd;
9895
9896 if (!rdev->wiphy.vendor_commands)
9897 return -EOPNOTSUPP;
9898
9899 if (IS_ERR(wdev)) {
9900 err = PTR_ERR(wdev);
9901 if (err != -EINVAL)
9902 return err;
9903 wdev = NULL;
9904 } else if (wdev->wiphy != &rdev->wiphy) {
9905 return -EINVAL;
9906 }
9907
9908 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9909 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9910 return -EINVAL;
9911
9912 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9913 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9914 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9915 const struct wiphy_vendor_command *vcmd;
9916 void *data = NULL;
9917 int len = 0;
9918
9919 vcmd = &rdev->wiphy.vendor_commands[i];
9920
9921 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9922 continue;
9923
9924 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9925 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9926 if (!wdev)
9927 return -EINVAL;
9928 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9929 !wdev->netdev)
9930 return -EINVAL;
9931
9932 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9933 if (wdev->netdev &&
9934 !netif_running(wdev->netdev))
9935 return -ENETDOWN;
9936 if (!wdev->netdev && !wdev->p2p_started)
9937 return -ENETDOWN;
9938 }
9939 } else {
9940 wdev = NULL;
9941 }
9942
9943 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9944 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9945 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9946 }
9947
9948 rdev->cur_cmd_info = info;
9949 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9950 data, len);
9951 rdev->cur_cmd_info = NULL;
9952 return err;
9953 }
9954
9955 return -EOPNOTSUPP;
9956 }
9957
9958 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9959 enum nl80211_commands cmd,
9960 enum nl80211_attrs attr,
9961 int approxlen)
9962 {
9963 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9964
9965 if (WARN_ON(!rdev->cur_cmd_info))
9966 return NULL;
9967
9968 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
9969 rdev->cur_cmd_info->snd_portid,
9970 rdev->cur_cmd_info->snd_seq,
9971 cmd, attr, NULL, GFP_KERNEL);
9972 }
9973 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9974
9975 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9976 {
9977 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9978 void *hdr = ((void **)skb->cb)[1];
9979 struct nlattr *data = ((void **)skb->cb)[2];
9980
9981 /* clear CB data for netlink core to own from now on */
9982 memset(skb->cb, 0, sizeof(skb->cb));
9983
9984 if (WARN_ON(!rdev->cur_cmd_info)) {
9985 kfree_skb(skb);
9986 return -EINVAL;
9987 }
9988
9989 nla_nest_end(skb, data);
9990 genlmsg_end(skb, hdr);
9991 return genlmsg_reply(skb, rdev->cur_cmd_info);
9992 }
9993 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9994
9995
9996 static int nl80211_set_qos_map(struct sk_buff *skb,
9997 struct genl_info *info)
9998 {
9999 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10000 struct cfg80211_qos_map *qos_map = NULL;
10001 struct net_device *dev = info->user_ptr[1];
10002 u8 *pos, len, num_des, des_len, des;
10003 int ret;
10004
10005 if (!rdev->ops->set_qos_map)
10006 return -EOPNOTSUPP;
10007
10008 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10009 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10010 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10011
10012 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10013 len > IEEE80211_QOS_MAP_LEN_MAX)
10014 return -EINVAL;
10015
10016 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10017 if (!qos_map)
10018 return -ENOMEM;
10019
10020 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10021 if (num_des) {
10022 des_len = num_des *
10023 sizeof(struct cfg80211_dscp_exception);
10024 memcpy(qos_map->dscp_exception, pos, des_len);
10025 qos_map->num_des = num_des;
10026 for (des = 0; des < num_des; des++) {
10027 if (qos_map->dscp_exception[des].up > 7) {
10028 kfree(qos_map);
10029 return -EINVAL;
10030 }
10031 }
10032 pos += des_len;
10033 }
10034 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10035 }
10036
10037 wdev_lock(dev->ieee80211_ptr);
10038 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10039 if (!ret)
10040 ret = rdev_set_qos_map(rdev, dev, qos_map);
10041 wdev_unlock(dev->ieee80211_ptr);
10042
10043 kfree(qos_map);
10044 return ret;
10045 }
10046
10047 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10048 {
10049 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10050 struct net_device *dev = info->user_ptr[1];
10051 struct wireless_dev *wdev = dev->ieee80211_ptr;
10052 const u8 *peer;
10053 u8 tsid, up;
10054 u16 admitted_time = 0;
10055 int err;
10056
10057 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10058 return -EOPNOTSUPP;
10059
10060 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10061 !info->attrs[NL80211_ATTR_USER_PRIO])
10062 return -EINVAL;
10063
10064 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10065 if (tsid >= IEEE80211_NUM_TIDS)
10066 return -EINVAL;
10067
10068 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10069 if (up >= IEEE80211_NUM_UPS)
10070 return -EINVAL;
10071
10072 /* WMM uses TIDs 0-7 even for TSPEC */
10073 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10074 /* TODO: handle 802.11 TSPEC/admission control
10075 * need more attributes for that (e.g. BA session requirement);
10076 * change the WMM adminssion test above to allow both then
10077 */
10078 return -EINVAL;
10079 }
10080
10081 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10082
10083 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10084 admitted_time =
10085 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10086 if (!admitted_time)
10087 return -EINVAL;
10088 }
10089
10090 wdev_lock(wdev);
10091 switch (wdev->iftype) {
10092 case NL80211_IFTYPE_STATION:
10093 case NL80211_IFTYPE_P2P_CLIENT:
10094 if (wdev->current_bss)
10095 break;
10096 err = -ENOTCONN;
10097 goto out;
10098 default:
10099 err = -EOPNOTSUPP;
10100 goto out;
10101 }
10102
10103 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10104
10105 out:
10106 wdev_unlock(wdev);
10107 return err;
10108 }
10109
10110 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10111 {
10112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10113 struct net_device *dev = info->user_ptr[1];
10114 struct wireless_dev *wdev = dev->ieee80211_ptr;
10115 const u8 *peer;
10116 u8 tsid;
10117 int err;
10118
10119 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10120 return -EINVAL;
10121
10122 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10123 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10124
10125 wdev_lock(wdev);
10126 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10127 wdev_unlock(wdev);
10128
10129 return err;
10130 }
10131
10132 static int nl80211_tdls_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 struct cfg80211_chan_def chandef = {};
10139 const u8 *addr;
10140 u8 oper_class;
10141 int err;
10142
10143 if (!rdev->ops->tdls_channel_switch ||
10144 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10145 return -EOPNOTSUPP;
10146
10147 switch (dev->ieee80211_ptr->iftype) {
10148 case NL80211_IFTYPE_STATION:
10149 case NL80211_IFTYPE_P2P_CLIENT:
10150 break;
10151 default:
10152 return -EOPNOTSUPP;
10153 }
10154
10155 if (!info->attrs[NL80211_ATTR_MAC] ||
10156 !info->attrs[NL80211_ATTR_OPER_CLASS])
10157 return -EINVAL;
10158
10159 err = nl80211_parse_chandef(rdev, info, &chandef);
10160 if (err)
10161 return err;
10162
10163 /*
10164 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10165 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10166 * specification is not defined for them.
10167 */
10168 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10169 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10170 chandef.width != NL80211_CHAN_WIDTH_20)
10171 return -EINVAL;
10172
10173 /* we will be active on the TDLS link */
10174 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10175 wdev->iftype))
10176 return -EINVAL;
10177
10178 /* don't allow switching to DFS channels */
10179 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10180 return -EINVAL;
10181
10182 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10183 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10184
10185 wdev_lock(wdev);
10186 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10187 wdev_unlock(wdev);
10188
10189 return err;
10190 }
10191
10192 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10193 struct genl_info *info)
10194 {
10195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10196 struct net_device *dev = info->user_ptr[1];
10197 struct wireless_dev *wdev = dev->ieee80211_ptr;
10198 const u8 *addr;
10199
10200 if (!rdev->ops->tdls_channel_switch ||
10201 !rdev->ops->tdls_cancel_channel_switch ||
10202 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10203 return -EOPNOTSUPP;
10204
10205 switch (dev->ieee80211_ptr->iftype) {
10206 case NL80211_IFTYPE_STATION:
10207 case NL80211_IFTYPE_P2P_CLIENT:
10208 break;
10209 default:
10210 return -EOPNOTSUPP;
10211 }
10212
10213 if (!info->attrs[NL80211_ATTR_MAC])
10214 return -EINVAL;
10215
10216 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10217
10218 wdev_lock(wdev);
10219 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10220 wdev_unlock(wdev);
10221
10222 return 0;
10223 }
10224
10225 #define NL80211_FLAG_NEED_WIPHY 0x01
10226 #define NL80211_FLAG_NEED_NETDEV 0x02
10227 #define NL80211_FLAG_NEED_RTNL 0x04
10228 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10229 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10230 NL80211_FLAG_CHECK_NETDEV_UP)
10231 #define NL80211_FLAG_NEED_WDEV 0x10
10232 /* If a netdev is associated, it must be UP, P2P must be started */
10233 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10234 NL80211_FLAG_CHECK_NETDEV_UP)
10235 #define NL80211_FLAG_CLEAR_SKB 0x20
10236
10237 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10238 struct genl_info *info)
10239 {
10240 struct cfg80211_registered_device *rdev;
10241 struct wireless_dev *wdev;
10242 struct net_device *dev;
10243 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10244
10245 if (rtnl)
10246 rtnl_lock();
10247
10248 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10249 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10250 if (IS_ERR(rdev)) {
10251 if (rtnl)
10252 rtnl_unlock();
10253 return PTR_ERR(rdev);
10254 }
10255 info->user_ptr[0] = rdev;
10256 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10257 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10258 ASSERT_RTNL();
10259
10260 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10261 info->attrs);
10262 if (IS_ERR(wdev)) {
10263 if (rtnl)
10264 rtnl_unlock();
10265 return PTR_ERR(wdev);
10266 }
10267
10268 dev = wdev->netdev;
10269 rdev = wiphy_to_rdev(wdev->wiphy);
10270
10271 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10272 if (!dev) {
10273 if (rtnl)
10274 rtnl_unlock();
10275 return -EINVAL;
10276 }
10277
10278 info->user_ptr[1] = dev;
10279 } else {
10280 info->user_ptr[1] = wdev;
10281 }
10282
10283 if (dev) {
10284 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10285 !netif_running(dev)) {
10286 if (rtnl)
10287 rtnl_unlock();
10288 return -ENETDOWN;
10289 }
10290
10291 dev_hold(dev);
10292 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10293 if (!wdev->p2p_started) {
10294 if (rtnl)
10295 rtnl_unlock();
10296 return -ENETDOWN;
10297 }
10298 }
10299
10300 info->user_ptr[0] = rdev;
10301 }
10302
10303 return 0;
10304 }
10305
10306 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10307 struct genl_info *info)
10308 {
10309 if (info->user_ptr[1]) {
10310 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10311 struct wireless_dev *wdev = info->user_ptr[1];
10312
10313 if (wdev->netdev)
10314 dev_put(wdev->netdev);
10315 } else {
10316 dev_put(info->user_ptr[1]);
10317 }
10318 }
10319
10320 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10321 rtnl_unlock();
10322
10323 /* If needed, clear the netlink message payload from the SKB
10324 * as it might contain key data that shouldn't stick around on
10325 * the heap after the SKB is freed. The netlink message header
10326 * is still needed for further processing, so leave it intact.
10327 */
10328 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10329 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10330
10331 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10332 }
10333 }
10334
10335 static const struct genl_ops nl80211_ops[] = {
10336 {
10337 .cmd = NL80211_CMD_GET_WIPHY,
10338 .doit = nl80211_get_wiphy,
10339 .dumpit = nl80211_dump_wiphy,
10340 .done = nl80211_dump_wiphy_done,
10341 .policy = nl80211_policy,
10342 /* can be retrieved by unprivileged users */
10343 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10344 NL80211_FLAG_NEED_RTNL,
10345 },
10346 {
10347 .cmd = NL80211_CMD_SET_WIPHY,
10348 .doit = nl80211_set_wiphy,
10349 .policy = nl80211_policy,
10350 .flags = GENL_ADMIN_PERM,
10351 .internal_flags = NL80211_FLAG_NEED_RTNL,
10352 },
10353 {
10354 .cmd = NL80211_CMD_GET_INTERFACE,
10355 .doit = nl80211_get_interface,
10356 .dumpit = nl80211_dump_interface,
10357 .policy = nl80211_policy,
10358 /* can be retrieved by unprivileged users */
10359 .internal_flags = NL80211_FLAG_NEED_WDEV |
10360 NL80211_FLAG_NEED_RTNL,
10361 },
10362 {
10363 .cmd = NL80211_CMD_SET_INTERFACE,
10364 .doit = nl80211_set_interface,
10365 .policy = nl80211_policy,
10366 .flags = GENL_ADMIN_PERM,
10367 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10368 NL80211_FLAG_NEED_RTNL,
10369 },
10370 {
10371 .cmd = NL80211_CMD_NEW_INTERFACE,
10372 .doit = nl80211_new_interface,
10373 .policy = nl80211_policy,
10374 .flags = GENL_ADMIN_PERM,
10375 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10376 NL80211_FLAG_NEED_RTNL,
10377 },
10378 {
10379 .cmd = NL80211_CMD_DEL_INTERFACE,
10380 .doit = nl80211_del_interface,
10381 .policy = nl80211_policy,
10382 .flags = GENL_ADMIN_PERM,
10383 .internal_flags = NL80211_FLAG_NEED_WDEV |
10384 NL80211_FLAG_NEED_RTNL,
10385 },
10386 {
10387 .cmd = NL80211_CMD_GET_KEY,
10388 .doit = nl80211_get_key,
10389 .policy = nl80211_policy,
10390 .flags = GENL_ADMIN_PERM,
10391 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10392 NL80211_FLAG_NEED_RTNL,
10393 },
10394 {
10395 .cmd = NL80211_CMD_SET_KEY,
10396 .doit = nl80211_set_key,
10397 .policy = nl80211_policy,
10398 .flags = GENL_ADMIN_PERM,
10399 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10400 NL80211_FLAG_NEED_RTNL |
10401 NL80211_FLAG_CLEAR_SKB,
10402 },
10403 {
10404 .cmd = NL80211_CMD_NEW_KEY,
10405 .doit = nl80211_new_key,
10406 .policy = nl80211_policy,
10407 .flags = GENL_ADMIN_PERM,
10408 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10409 NL80211_FLAG_NEED_RTNL |
10410 NL80211_FLAG_CLEAR_SKB,
10411 },
10412 {
10413 .cmd = NL80211_CMD_DEL_KEY,
10414 .doit = nl80211_del_key,
10415 .policy = nl80211_policy,
10416 .flags = GENL_ADMIN_PERM,
10417 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10418 NL80211_FLAG_NEED_RTNL,
10419 },
10420 {
10421 .cmd = NL80211_CMD_SET_BEACON,
10422 .policy = nl80211_policy,
10423 .flags = GENL_ADMIN_PERM,
10424 .doit = nl80211_set_beacon,
10425 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10426 NL80211_FLAG_NEED_RTNL,
10427 },
10428 {
10429 .cmd = NL80211_CMD_START_AP,
10430 .policy = nl80211_policy,
10431 .flags = GENL_ADMIN_PERM,
10432 .doit = nl80211_start_ap,
10433 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10434 NL80211_FLAG_NEED_RTNL,
10435 },
10436 {
10437 .cmd = NL80211_CMD_STOP_AP,
10438 .policy = nl80211_policy,
10439 .flags = GENL_ADMIN_PERM,
10440 .doit = nl80211_stop_ap,
10441 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10442 NL80211_FLAG_NEED_RTNL,
10443 },
10444 {
10445 .cmd = NL80211_CMD_GET_STATION,
10446 .doit = nl80211_get_station,
10447 .dumpit = nl80211_dump_station,
10448 .policy = nl80211_policy,
10449 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10450 NL80211_FLAG_NEED_RTNL,
10451 },
10452 {
10453 .cmd = NL80211_CMD_SET_STATION,
10454 .doit = nl80211_set_station,
10455 .policy = nl80211_policy,
10456 .flags = GENL_ADMIN_PERM,
10457 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10458 NL80211_FLAG_NEED_RTNL,
10459 },
10460 {
10461 .cmd = NL80211_CMD_NEW_STATION,
10462 .doit = nl80211_new_station,
10463 .policy = nl80211_policy,
10464 .flags = GENL_ADMIN_PERM,
10465 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10466 NL80211_FLAG_NEED_RTNL,
10467 },
10468 {
10469 .cmd = NL80211_CMD_DEL_STATION,
10470 .doit = nl80211_del_station,
10471 .policy = nl80211_policy,
10472 .flags = GENL_ADMIN_PERM,
10473 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10474 NL80211_FLAG_NEED_RTNL,
10475 },
10476 {
10477 .cmd = NL80211_CMD_GET_MPATH,
10478 .doit = nl80211_get_mpath,
10479 .dumpit = nl80211_dump_mpath,
10480 .policy = nl80211_policy,
10481 .flags = GENL_ADMIN_PERM,
10482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10483 NL80211_FLAG_NEED_RTNL,
10484 },
10485 {
10486 .cmd = NL80211_CMD_GET_MPP,
10487 .doit = nl80211_get_mpp,
10488 .dumpit = nl80211_dump_mpp,
10489 .policy = nl80211_policy,
10490 .flags = GENL_ADMIN_PERM,
10491 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10492 NL80211_FLAG_NEED_RTNL,
10493 },
10494 {
10495 .cmd = NL80211_CMD_SET_MPATH,
10496 .doit = nl80211_set_mpath,
10497 .policy = nl80211_policy,
10498 .flags = GENL_ADMIN_PERM,
10499 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10500 NL80211_FLAG_NEED_RTNL,
10501 },
10502 {
10503 .cmd = NL80211_CMD_NEW_MPATH,
10504 .doit = nl80211_new_mpath,
10505 .policy = nl80211_policy,
10506 .flags = GENL_ADMIN_PERM,
10507 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10508 NL80211_FLAG_NEED_RTNL,
10509 },
10510 {
10511 .cmd = NL80211_CMD_DEL_MPATH,
10512 .doit = nl80211_del_mpath,
10513 .policy = nl80211_policy,
10514 .flags = GENL_ADMIN_PERM,
10515 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10516 NL80211_FLAG_NEED_RTNL,
10517 },
10518 {
10519 .cmd = NL80211_CMD_SET_BSS,
10520 .doit = nl80211_set_bss,
10521 .policy = nl80211_policy,
10522 .flags = GENL_ADMIN_PERM,
10523 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10524 NL80211_FLAG_NEED_RTNL,
10525 },
10526 {
10527 .cmd = NL80211_CMD_GET_REG,
10528 .doit = nl80211_get_reg_do,
10529 .dumpit = nl80211_get_reg_dump,
10530 .policy = nl80211_policy,
10531 .internal_flags = NL80211_FLAG_NEED_RTNL,
10532 /* can be retrieved by unprivileged users */
10533 },
10534 {
10535 .cmd = NL80211_CMD_SET_REG,
10536 .doit = nl80211_set_reg,
10537 .policy = nl80211_policy,
10538 .flags = GENL_ADMIN_PERM,
10539 .internal_flags = NL80211_FLAG_NEED_RTNL,
10540 },
10541 {
10542 .cmd = NL80211_CMD_REQ_SET_REG,
10543 .doit = nl80211_req_set_reg,
10544 .policy = nl80211_policy,
10545 .flags = GENL_ADMIN_PERM,
10546 },
10547 {
10548 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10549 .doit = nl80211_get_mesh_config,
10550 .policy = nl80211_policy,
10551 /* can be retrieved by unprivileged users */
10552 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10553 NL80211_FLAG_NEED_RTNL,
10554 },
10555 {
10556 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10557 .doit = nl80211_update_mesh_config,
10558 .policy = nl80211_policy,
10559 .flags = GENL_ADMIN_PERM,
10560 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10561 NL80211_FLAG_NEED_RTNL,
10562 },
10563 {
10564 .cmd = NL80211_CMD_TRIGGER_SCAN,
10565 .doit = nl80211_trigger_scan,
10566 .policy = nl80211_policy,
10567 .flags = GENL_ADMIN_PERM,
10568 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10569 NL80211_FLAG_NEED_RTNL,
10570 },
10571 {
10572 .cmd = NL80211_CMD_GET_SCAN,
10573 .policy = nl80211_policy,
10574 .dumpit = nl80211_dump_scan,
10575 },
10576 {
10577 .cmd = NL80211_CMD_START_SCHED_SCAN,
10578 .doit = nl80211_start_sched_scan,
10579 .policy = nl80211_policy,
10580 .flags = GENL_ADMIN_PERM,
10581 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10582 NL80211_FLAG_NEED_RTNL,
10583 },
10584 {
10585 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10586 .doit = nl80211_stop_sched_scan,
10587 .policy = nl80211_policy,
10588 .flags = GENL_ADMIN_PERM,
10589 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10590 NL80211_FLAG_NEED_RTNL,
10591 },
10592 {
10593 .cmd = NL80211_CMD_AUTHENTICATE,
10594 .doit = nl80211_authenticate,
10595 .policy = nl80211_policy,
10596 .flags = GENL_ADMIN_PERM,
10597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10598 NL80211_FLAG_NEED_RTNL |
10599 NL80211_FLAG_CLEAR_SKB,
10600 },
10601 {
10602 .cmd = NL80211_CMD_ASSOCIATE,
10603 .doit = nl80211_associate,
10604 .policy = nl80211_policy,
10605 .flags = GENL_ADMIN_PERM,
10606 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10607 NL80211_FLAG_NEED_RTNL,
10608 },
10609 {
10610 .cmd = NL80211_CMD_DEAUTHENTICATE,
10611 .doit = nl80211_deauthenticate,
10612 .policy = nl80211_policy,
10613 .flags = GENL_ADMIN_PERM,
10614 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10615 NL80211_FLAG_NEED_RTNL,
10616 },
10617 {
10618 .cmd = NL80211_CMD_DISASSOCIATE,
10619 .doit = nl80211_disassociate,
10620 .policy = nl80211_policy,
10621 .flags = GENL_ADMIN_PERM,
10622 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10623 NL80211_FLAG_NEED_RTNL,
10624 },
10625 {
10626 .cmd = NL80211_CMD_JOIN_IBSS,
10627 .doit = nl80211_join_ibss,
10628 .policy = nl80211_policy,
10629 .flags = GENL_ADMIN_PERM,
10630 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10631 NL80211_FLAG_NEED_RTNL,
10632 },
10633 {
10634 .cmd = NL80211_CMD_LEAVE_IBSS,
10635 .doit = nl80211_leave_ibss,
10636 .policy = nl80211_policy,
10637 .flags = GENL_ADMIN_PERM,
10638 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10639 NL80211_FLAG_NEED_RTNL,
10640 },
10641 #ifdef CONFIG_NL80211_TESTMODE
10642 {
10643 .cmd = NL80211_CMD_TESTMODE,
10644 .doit = nl80211_testmode_do,
10645 .dumpit = nl80211_testmode_dump,
10646 .policy = nl80211_policy,
10647 .flags = GENL_ADMIN_PERM,
10648 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10649 NL80211_FLAG_NEED_RTNL,
10650 },
10651 #endif
10652 {
10653 .cmd = NL80211_CMD_CONNECT,
10654 .doit = nl80211_connect,
10655 .policy = nl80211_policy,
10656 .flags = GENL_ADMIN_PERM,
10657 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10658 NL80211_FLAG_NEED_RTNL,
10659 },
10660 {
10661 .cmd = NL80211_CMD_DISCONNECT,
10662 .doit = nl80211_disconnect,
10663 .policy = nl80211_policy,
10664 .flags = GENL_ADMIN_PERM,
10665 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10666 NL80211_FLAG_NEED_RTNL,
10667 },
10668 {
10669 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10670 .doit = nl80211_wiphy_netns,
10671 .policy = nl80211_policy,
10672 .flags = GENL_ADMIN_PERM,
10673 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10674 NL80211_FLAG_NEED_RTNL,
10675 },
10676 {
10677 .cmd = NL80211_CMD_GET_SURVEY,
10678 .policy = nl80211_policy,
10679 .dumpit = nl80211_dump_survey,
10680 },
10681 {
10682 .cmd = NL80211_CMD_SET_PMKSA,
10683 .doit = nl80211_setdel_pmksa,
10684 .policy = nl80211_policy,
10685 .flags = GENL_ADMIN_PERM,
10686 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10687 NL80211_FLAG_NEED_RTNL,
10688 },
10689 {
10690 .cmd = NL80211_CMD_DEL_PMKSA,
10691 .doit = nl80211_setdel_pmksa,
10692 .policy = nl80211_policy,
10693 .flags = GENL_ADMIN_PERM,
10694 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10695 NL80211_FLAG_NEED_RTNL,
10696 },
10697 {
10698 .cmd = NL80211_CMD_FLUSH_PMKSA,
10699 .doit = nl80211_flush_pmksa,
10700 .policy = nl80211_policy,
10701 .flags = GENL_ADMIN_PERM,
10702 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10703 NL80211_FLAG_NEED_RTNL,
10704 },
10705 {
10706 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10707 .doit = nl80211_remain_on_channel,
10708 .policy = nl80211_policy,
10709 .flags = GENL_ADMIN_PERM,
10710 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10711 NL80211_FLAG_NEED_RTNL,
10712 },
10713 {
10714 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10715 .doit = nl80211_cancel_remain_on_channel,
10716 .policy = nl80211_policy,
10717 .flags = GENL_ADMIN_PERM,
10718 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10719 NL80211_FLAG_NEED_RTNL,
10720 },
10721 {
10722 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10723 .doit = nl80211_set_tx_bitrate_mask,
10724 .policy = nl80211_policy,
10725 .flags = GENL_ADMIN_PERM,
10726 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10727 NL80211_FLAG_NEED_RTNL,
10728 },
10729 {
10730 .cmd = NL80211_CMD_REGISTER_FRAME,
10731 .doit = nl80211_register_mgmt,
10732 .policy = nl80211_policy,
10733 .flags = GENL_ADMIN_PERM,
10734 .internal_flags = NL80211_FLAG_NEED_WDEV |
10735 NL80211_FLAG_NEED_RTNL,
10736 },
10737 {
10738 .cmd = NL80211_CMD_FRAME,
10739 .doit = nl80211_tx_mgmt,
10740 .policy = nl80211_policy,
10741 .flags = GENL_ADMIN_PERM,
10742 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10743 NL80211_FLAG_NEED_RTNL,
10744 },
10745 {
10746 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10747 .doit = nl80211_tx_mgmt_cancel_wait,
10748 .policy = nl80211_policy,
10749 .flags = GENL_ADMIN_PERM,
10750 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10751 NL80211_FLAG_NEED_RTNL,
10752 },
10753 {
10754 .cmd = NL80211_CMD_SET_POWER_SAVE,
10755 .doit = nl80211_set_power_save,
10756 .policy = nl80211_policy,
10757 .flags = GENL_ADMIN_PERM,
10758 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10759 NL80211_FLAG_NEED_RTNL,
10760 },
10761 {
10762 .cmd = NL80211_CMD_GET_POWER_SAVE,
10763 .doit = nl80211_get_power_save,
10764 .policy = nl80211_policy,
10765 /* can be retrieved by unprivileged users */
10766 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10767 NL80211_FLAG_NEED_RTNL,
10768 },
10769 {
10770 .cmd = NL80211_CMD_SET_CQM,
10771 .doit = nl80211_set_cqm,
10772 .policy = nl80211_policy,
10773 .flags = GENL_ADMIN_PERM,
10774 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10775 NL80211_FLAG_NEED_RTNL,
10776 },
10777 {
10778 .cmd = NL80211_CMD_SET_CHANNEL,
10779 .doit = nl80211_set_channel,
10780 .policy = nl80211_policy,
10781 .flags = GENL_ADMIN_PERM,
10782 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10783 NL80211_FLAG_NEED_RTNL,
10784 },
10785 {
10786 .cmd = NL80211_CMD_SET_WDS_PEER,
10787 .doit = nl80211_set_wds_peer,
10788 .policy = nl80211_policy,
10789 .flags = GENL_ADMIN_PERM,
10790 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10791 NL80211_FLAG_NEED_RTNL,
10792 },
10793 {
10794 .cmd = NL80211_CMD_JOIN_MESH,
10795 .doit = nl80211_join_mesh,
10796 .policy = nl80211_policy,
10797 .flags = GENL_ADMIN_PERM,
10798 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10799 NL80211_FLAG_NEED_RTNL,
10800 },
10801 {
10802 .cmd = NL80211_CMD_LEAVE_MESH,
10803 .doit = nl80211_leave_mesh,
10804 .policy = nl80211_policy,
10805 .flags = GENL_ADMIN_PERM,
10806 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10807 NL80211_FLAG_NEED_RTNL,
10808 },
10809 {
10810 .cmd = NL80211_CMD_JOIN_OCB,
10811 .doit = nl80211_join_ocb,
10812 .policy = nl80211_policy,
10813 .flags = GENL_ADMIN_PERM,
10814 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10815 NL80211_FLAG_NEED_RTNL,
10816 },
10817 {
10818 .cmd = NL80211_CMD_LEAVE_OCB,
10819 .doit = nl80211_leave_ocb,
10820 .policy = nl80211_policy,
10821 .flags = GENL_ADMIN_PERM,
10822 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10823 NL80211_FLAG_NEED_RTNL,
10824 },
10825 #ifdef CONFIG_PM
10826 {
10827 .cmd = NL80211_CMD_GET_WOWLAN,
10828 .doit = nl80211_get_wowlan,
10829 .policy = nl80211_policy,
10830 /* can be retrieved by unprivileged users */
10831 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10832 NL80211_FLAG_NEED_RTNL,
10833 },
10834 {
10835 .cmd = NL80211_CMD_SET_WOWLAN,
10836 .doit = nl80211_set_wowlan,
10837 .policy = nl80211_policy,
10838 .flags = GENL_ADMIN_PERM,
10839 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10840 NL80211_FLAG_NEED_RTNL,
10841 },
10842 #endif
10843 {
10844 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10845 .doit = nl80211_set_rekey_data,
10846 .policy = nl80211_policy,
10847 .flags = GENL_ADMIN_PERM,
10848 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10849 NL80211_FLAG_NEED_RTNL |
10850 NL80211_FLAG_CLEAR_SKB,
10851 },
10852 {
10853 .cmd = NL80211_CMD_TDLS_MGMT,
10854 .doit = nl80211_tdls_mgmt,
10855 .policy = nl80211_policy,
10856 .flags = GENL_ADMIN_PERM,
10857 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10858 NL80211_FLAG_NEED_RTNL,
10859 },
10860 {
10861 .cmd = NL80211_CMD_TDLS_OPER,
10862 .doit = nl80211_tdls_oper,
10863 .policy = nl80211_policy,
10864 .flags = GENL_ADMIN_PERM,
10865 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10866 NL80211_FLAG_NEED_RTNL,
10867 },
10868 {
10869 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10870 .doit = nl80211_register_unexpected_frame,
10871 .policy = nl80211_policy,
10872 .flags = GENL_ADMIN_PERM,
10873 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10874 NL80211_FLAG_NEED_RTNL,
10875 },
10876 {
10877 .cmd = NL80211_CMD_PROBE_CLIENT,
10878 .doit = nl80211_probe_client,
10879 .policy = nl80211_policy,
10880 .flags = GENL_ADMIN_PERM,
10881 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10882 NL80211_FLAG_NEED_RTNL,
10883 },
10884 {
10885 .cmd = NL80211_CMD_REGISTER_BEACONS,
10886 .doit = nl80211_register_beacons,
10887 .policy = nl80211_policy,
10888 .flags = GENL_ADMIN_PERM,
10889 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10890 NL80211_FLAG_NEED_RTNL,
10891 },
10892 {
10893 .cmd = NL80211_CMD_SET_NOACK_MAP,
10894 .doit = nl80211_set_noack_map,
10895 .policy = nl80211_policy,
10896 .flags = GENL_ADMIN_PERM,
10897 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10898 NL80211_FLAG_NEED_RTNL,
10899 },
10900 {
10901 .cmd = NL80211_CMD_START_P2P_DEVICE,
10902 .doit = nl80211_start_p2p_device,
10903 .policy = nl80211_policy,
10904 .flags = GENL_ADMIN_PERM,
10905 .internal_flags = NL80211_FLAG_NEED_WDEV |
10906 NL80211_FLAG_NEED_RTNL,
10907 },
10908 {
10909 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10910 .doit = nl80211_stop_p2p_device,
10911 .policy = nl80211_policy,
10912 .flags = GENL_ADMIN_PERM,
10913 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10914 NL80211_FLAG_NEED_RTNL,
10915 },
10916 {
10917 .cmd = NL80211_CMD_SET_MCAST_RATE,
10918 .doit = nl80211_set_mcast_rate,
10919 .policy = nl80211_policy,
10920 .flags = GENL_ADMIN_PERM,
10921 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10922 NL80211_FLAG_NEED_RTNL,
10923 },
10924 {
10925 .cmd = NL80211_CMD_SET_MAC_ACL,
10926 .doit = nl80211_set_mac_acl,
10927 .policy = nl80211_policy,
10928 .flags = GENL_ADMIN_PERM,
10929 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10930 NL80211_FLAG_NEED_RTNL,
10931 },
10932 {
10933 .cmd = NL80211_CMD_RADAR_DETECT,
10934 .doit = nl80211_start_radar_detection,
10935 .policy = nl80211_policy,
10936 .flags = GENL_ADMIN_PERM,
10937 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10938 NL80211_FLAG_NEED_RTNL,
10939 },
10940 {
10941 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10942 .doit = nl80211_get_protocol_features,
10943 .policy = nl80211_policy,
10944 },
10945 {
10946 .cmd = NL80211_CMD_UPDATE_FT_IES,
10947 .doit = nl80211_update_ft_ies,
10948 .policy = nl80211_policy,
10949 .flags = GENL_ADMIN_PERM,
10950 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10951 NL80211_FLAG_NEED_RTNL,
10952 },
10953 {
10954 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10955 .doit = nl80211_crit_protocol_start,
10956 .policy = nl80211_policy,
10957 .flags = GENL_ADMIN_PERM,
10958 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10959 NL80211_FLAG_NEED_RTNL,
10960 },
10961 {
10962 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10963 .doit = nl80211_crit_protocol_stop,
10964 .policy = nl80211_policy,
10965 .flags = GENL_ADMIN_PERM,
10966 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10967 NL80211_FLAG_NEED_RTNL,
10968 },
10969 {
10970 .cmd = NL80211_CMD_GET_COALESCE,
10971 .doit = nl80211_get_coalesce,
10972 .policy = nl80211_policy,
10973 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10974 NL80211_FLAG_NEED_RTNL,
10975 },
10976 {
10977 .cmd = NL80211_CMD_SET_COALESCE,
10978 .doit = nl80211_set_coalesce,
10979 .policy = nl80211_policy,
10980 .flags = GENL_ADMIN_PERM,
10981 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10982 NL80211_FLAG_NEED_RTNL,
10983 },
10984 {
10985 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10986 .doit = nl80211_channel_switch,
10987 .policy = nl80211_policy,
10988 .flags = GENL_ADMIN_PERM,
10989 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10990 NL80211_FLAG_NEED_RTNL,
10991 },
10992 {
10993 .cmd = NL80211_CMD_VENDOR,
10994 .doit = nl80211_vendor_cmd,
10995 .policy = nl80211_policy,
10996 .flags = GENL_ADMIN_PERM,
10997 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10998 NL80211_FLAG_NEED_RTNL,
10999 },
11000 {
11001 .cmd = NL80211_CMD_SET_QOS_MAP,
11002 .doit = nl80211_set_qos_map,
11003 .policy = nl80211_policy,
11004 .flags = GENL_ADMIN_PERM,
11005 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11006 NL80211_FLAG_NEED_RTNL,
11007 },
11008 {
11009 .cmd = NL80211_CMD_ADD_TX_TS,
11010 .doit = nl80211_add_tx_ts,
11011 .policy = nl80211_policy,
11012 .flags = GENL_ADMIN_PERM,
11013 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11014 NL80211_FLAG_NEED_RTNL,
11015 },
11016 {
11017 .cmd = NL80211_CMD_DEL_TX_TS,
11018 .doit = nl80211_del_tx_ts,
11019 .policy = nl80211_policy,
11020 .flags = GENL_ADMIN_PERM,
11021 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11022 NL80211_FLAG_NEED_RTNL,
11023 },
11024 {
11025 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11026 .doit = nl80211_tdls_channel_switch,
11027 .policy = nl80211_policy,
11028 .flags = GENL_ADMIN_PERM,
11029 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11030 NL80211_FLAG_NEED_RTNL,
11031 },
11032 {
11033 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11034 .doit = nl80211_tdls_cancel_channel_switch,
11035 .policy = nl80211_policy,
11036 .flags = GENL_ADMIN_PERM,
11037 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11038 NL80211_FLAG_NEED_RTNL,
11039 },
11040 };
11041
11042 /* notification functions */
11043
11044 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11045 enum nl80211_commands cmd)
11046 {
11047 struct sk_buff *msg;
11048 struct nl80211_dump_wiphy_state state = {};
11049
11050 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11051 cmd != NL80211_CMD_DEL_WIPHY);
11052
11053 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11054 if (!msg)
11055 return;
11056
11057 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11058 nlmsg_free(msg);
11059 return;
11060 }
11061
11062 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11063 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11064 }
11065
11066 static int nl80211_add_scan_req(struct sk_buff *msg,
11067 struct cfg80211_registered_device *rdev)
11068 {
11069 struct cfg80211_scan_request *req = rdev->scan_req;
11070 struct nlattr *nest;
11071 int i;
11072
11073 if (WARN_ON(!req))
11074 return 0;
11075
11076 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11077 if (!nest)
11078 goto nla_put_failure;
11079 for (i = 0; i < req->n_ssids; i++) {
11080 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11081 goto nla_put_failure;
11082 }
11083 nla_nest_end(msg, nest);
11084
11085 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11086 if (!nest)
11087 goto nla_put_failure;
11088 for (i = 0; i < req->n_channels; i++) {
11089 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11090 goto nla_put_failure;
11091 }
11092 nla_nest_end(msg, nest);
11093
11094 if (req->ie &&
11095 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11096 goto nla_put_failure;
11097
11098 if (req->flags &&
11099 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11100 goto nla_put_failure;
11101
11102 return 0;
11103 nla_put_failure:
11104 return -ENOBUFS;
11105 }
11106
11107 static int nl80211_send_scan_msg(struct sk_buff *msg,
11108 struct cfg80211_registered_device *rdev,
11109 struct wireless_dev *wdev,
11110 u32 portid, u32 seq, int flags,
11111 u32 cmd)
11112 {
11113 void *hdr;
11114
11115 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11116 if (!hdr)
11117 return -1;
11118
11119 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11120 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11121 wdev->netdev->ifindex)) ||
11122 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11123 goto nla_put_failure;
11124
11125 /* ignore errors and send incomplete event anyway */
11126 nl80211_add_scan_req(msg, rdev);
11127
11128 genlmsg_end(msg, hdr);
11129 return 0;
11130
11131 nla_put_failure:
11132 genlmsg_cancel(msg, hdr);
11133 return -EMSGSIZE;
11134 }
11135
11136 static int
11137 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11138 struct cfg80211_registered_device *rdev,
11139 struct net_device *netdev,
11140 u32 portid, u32 seq, int flags, u32 cmd)
11141 {
11142 void *hdr;
11143
11144 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11145 if (!hdr)
11146 return -1;
11147
11148 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11149 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11150 goto nla_put_failure;
11151
11152 genlmsg_end(msg, hdr);
11153 return 0;
11154
11155 nla_put_failure:
11156 genlmsg_cancel(msg, hdr);
11157 return -EMSGSIZE;
11158 }
11159
11160 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11161 struct wireless_dev *wdev)
11162 {
11163 struct sk_buff *msg;
11164
11165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11166 if (!msg)
11167 return;
11168
11169 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11170 NL80211_CMD_TRIGGER_SCAN) < 0) {
11171 nlmsg_free(msg);
11172 return;
11173 }
11174
11175 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11176 NL80211_MCGRP_SCAN, GFP_KERNEL);
11177 }
11178
11179 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11180 struct wireless_dev *wdev, bool aborted)
11181 {
11182 struct sk_buff *msg;
11183
11184 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11185 if (!msg)
11186 return NULL;
11187
11188 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11189 aborted ? NL80211_CMD_SCAN_ABORTED :
11190 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11191 nlmsg_free(msg);
11192 return NULL;
11193 }
11194
11195 return msg;
11196 }
11197
11198 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11199 struct sk_buff *msg)
11200 {
11201 if (!msg)
11202 return;
11203
11204 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11205 NL80211_MCGRP_SCAN, GFP_KERNEL);
11206 }
11207
11208 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11209 struct net_device *netdev)
11210 {
11211 struct sk_buff *msg;
11212
11213 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11214 if (!msg)
11215 return;
11216
11217 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11218 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11219 nlmsg_free(msg);
11220 return;
11221 }
11222
11223 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11224 NL80211_MCGRP_SCAN, GFP_KERNEL);
11225 }
11226
11227 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11228 struct net_device *netdev, u32 cmd)
11229 {
11230 struct sk_buff *msg;
11231
11232 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11233 if (!msg)
11234 return;
11235
11236 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11237 nlmsg_free(msg);
11238 return;
11239 }
11240
11241 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11242 NL80211_MCGRP_SCAN, GFP_KERNEL);
11243 }
11244
11245 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11246 struct regulatory_request *request)
11247 {
11248 /* Userspace can always count this one always being set */
11249 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11250 goto nla_put_failure;
11251
11252 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11253 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11254 NL80211_REGDOM_TYPE_WORLD))
11255 goto nla_put_failure;
11256 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11257 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11258 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11259 goto nla_put_failure;
11260 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11261 request->intersect) {
11262 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11263 NL80211_REGDOM_TYPE_INTERSECTION))
11264 goto nla_put_failure;
11265 } else {
11266 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11267 NL80211_REGDOM_TYPE_COUNTRY) ||
11268 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11269 request->alpha2))
11270 goto nla_put_failure;
11271 }
11272
11273 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11274 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11275
11276 if (wiphy &&
11277 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11278 goto nla_put_failure;
11279
11280 if (wiphy &&
11281 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11282 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11283 goto nla_put_failure;
11284 }
11285
11286 return true;
11287
11288 nla_put_failure:
11289 return false;
11290 }
11291
11292 /*
11293 * This can happen on global regulatory changes or device specific settings
11294 * based on custom regulatory domains.
11295 */
11296 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11297 struct regulatory_request *request)
11298 {
11299 struct sk_buff *msg;
11300 void *hdr;
11301
11302 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11303 if (!msg)
11304 return;
11305
11306 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11307 if (!hdr) {
11308 nlmsg_free(msg);
11309 return;
11310 }
11311
11312 if (nl80211_reg_change_event_fill(msg, request) == false)
11313 goto nla_put_failure;
11314
11315 genlmsg_end(msg, hdr);
11316
11317 rcu_read_lock();
11318 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11319 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11320 rcu_read_unlock();
11321
11322 return;
11323
11324 nla_put_failure:
11325 genlmsg_cancel(msg, hdr);
11326 nlmsg_free(msg);
11327 }
11328
11329 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11330 struct net_device *netdev,
11331 const u8 *buf, size_t len,
11332 enum nl80211_commands cmd, gfp_t gfp,
11333 int uapsd_queues)
11334 {
11335 struct sk_buff *msg;
11336 void *hdr;
11337
11338 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11339 if (!msg)
11340 return;
11341
11342 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11343 if (!hdr) {
11344 nlmsg_free(msg);
11345 return;
11346 }
11347
11348 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11349 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11350 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11351 goto nla_put_failure;
11352
11353 if (uapsd_queues >= 0) {
11354 struct nlattr *nla_wmm =
11355 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11356 if (!nla_wmm)
11357 goto nla_put_failure;
11358
11359 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11360 uapsd_queues))
11361 goto nla_put_failure;
11362
11363 nla_nest_end(msg, nla_wmm);
11364 }
11365
11366 genlmsg_end(msg, hdr);
11367
11368 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11369 NL80211_MCGRP_MLME, gfp);
11370 return;
11371
11372 nla_put_failure:
11373 genlmsg_cancel(msg, hdr);
11374 nlmsg_free(msg);
11375 }
11376
11377 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11378 struct net_device *netdev, const u8 *buf,
11379 size_t len, gfp_t gfp)
11380 {
11381 nl80211_send_mlme_event(rdev, netdev, buf, len,
11382 NL80211_CMD_AUTHENTICATE, gfp, -1);
11383 }
11384
11385 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11386 struct net_device *netdev, const u8 *buf,
11387 size_t len, gfp_t gfp, int uapsd_queues)
11388 {
11389 nl80211_send_mlme_event(rdev, netdev, buf, len,
11390 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11391 }
11392
11393 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11394 struct net_device *netdev, const u8 *buf,
11395 size_t len, gfp_t gfp)
11396 {
11397 nl80211_send_mlme_event(rdev, netdev, buf, len,
11398 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11399 }
11400
11401 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11402 struct net_device *netdev, const u8 *buf,
11403 size_t len, gfp_t gfp)
11404 {
11405 nl80211_send_mlme_event(rdev, netdev, buf, len,
11406 NL80211_CMD_DISASSOCIATE, gfp, -1);
11407 }
11408
11409 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11410 size_t len)
11411 {
11412 struct wireless_dev *wdev = dev->ieee80211_ptr;
11413 struct wiphy *wiphy = wdev->wiphy;
11414 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11415 const struct ieee80211_mgmt *mgmt = (void *)buf;
11416 u32 cmd;
11417
11418 if (WARN_ON(len < 2))
11419 return;
11420
11421 if (ieee80211_is_deauth(mgmt->frame_control))
11422 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11423 else
11424 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11425
11426 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11427 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11428 }
11429 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11430
11431 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11432 struct net_device *netdev, int cmd,
11433 const u8 *addr, gfp_t gfp)
11434 {
11435 struct sk_buff *msg;
11436 void *hdr;
11437
11438 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11439 if (!msg)
11440 return;
11441
11442 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11443 if (!hdr) {
11444 nlmsg_free(msg);
11445 return;
11446 }
11447
11448 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11449 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11450 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11451 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11452 goto nla_put_failure;
11453
11454 genlmsg_end(msg, hdr);
11455
11456 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11457 NL80211_MCGRP_MLME, gfp);
11458 return;
11459
11460 nla_put_failure:
11461 genlmsg_cancel(msg, hdr);
11462 nlmsg_free(msg);
11463 }
11464
11465 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11466 struct net_device *netdev, const u8 *addr,
11467 gfp_t gfp)
11468 {
11469 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11470 addr, gfp);
11471 }
11472
11473 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11474 struct net_device *netdev, const u8 *addr,
11475 gfp_t gfp)
11476 {
11477 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11478 addr, gfp);
11479 }
11480
11481 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11482 struct net_device *netdev, const u8 *bssid,
11483 const u8 *req_ie, size_t req_ie_len,
11484 const u8 *resp_ie, size_t resp_ie_len,
11485 u16 status, gfp_t gfp)
11486 {
11487 struct sk_buff *msg;
11488 void *hdr;
11489
11490 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11491 if (!msg)
11492 return;
11493
11494 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11495 if (!hdr) {
11496 nlmsg_free(msg);
11497 return;
11498 }
11499
11500 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11501 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11502 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11503 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11504 (req_ie &&
11505 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11506 (resp_ie &&
11507 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11508 goto nla_put_failure;
11509
11510 genlmsg_end(msg, hdr);
11511
11512 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11513 NL80211_MCGRP_MLME, gfp);
11514 return;
11515
11516 nla_put_failure:
11517 genlmsg_cancel(msg, hdr);
11518 nlmsg_free(msg);
11519
11520 }
11521
11522 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11523 struct net_device *netdev, const u8 *bssid,
11524 const u8 *req_ie, size_t req_ie_len,
11525 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11526 {
11527 struct sk_buff *msg;
11528 void *hdr;
11529
11530 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11531 if (!msg)
11532 return;
11533
11534 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11535 if (!hdr) {
11536 nlmsg_free(msg);
11537 return;
11538 }
11539
11540 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11541 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11542 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11543 (req_ie &&
11544 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11545 (resp_ie &&
11546 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11547 goto nla_put_failure;
11548
11549 genlmsg_end(msg, hdr);
11550
11551 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11552 NL80211_MCGRP_MLME, gfp);
11553 return;
11554
11555 nla_put_failure:
11556 genlmsg_cancel(msg, hdr);
11557 nlmsg_free(msg);
11558
11559 }
11560
11561 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11562 struct net_device *netdev, u16 reason,
11563 const u8 *ie, size_t ie_len, bool from_ap)
11564 {
11565 struct sk_buff *msg;
11566 void *hdr;
11567
11568 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11569 if (!msg)
11570 return;
11571
11572 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11573 if (!hdr) {
11574 nlmsg_free(msg);
11575 return;
11576 }
11577
11578 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11579 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11580 (from_ap && reason &&
11581 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11582 (from_ap &&
11583 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11584 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11585 goto nla_put_failure;
11586
11587 genlmsg_end(msg, hdr);
11588
11589 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11590 NL80211_MCGRP_MLME, GFP_KERNEL);
11591 return;
11592
11593 nla_put_failure:
11594 genlmsg_cancel(msg, hdr);
11595 nlmsg_free(msg);
11596
11597 }
11598
11599 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11600 struct net_device *netdev, const u8 *bssid,
11601 gfp_t gfp)
11602 {
11603 struct sk_buff *msg;
11604 void *hdr;
11605
11606 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11607 if (!msg)
11608 return;
11609
11610 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11611 if (!hdr) {
11612 nlmsg_free(msg);
11613 return;
11614 }
11615
11616 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11617 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11618 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11619 goto nla_put_failure;
11620
11621 genlmsg_end(msg, hdr);
11622
11623 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11624 NL80211_MCGRP_MLME, gfp);
11625 return;
11626
11627 nla_put_failure:
11628 genlmsg_cancel(msg, hdr);
11629 nlmsg_free(msg);
11630 }
11631
11632 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11633 const u8* ie, u8 ie_len, gfp_t gfp)
11634 {
11635 struct wireless_dev *wdev = dev->ieee80211_ptr;
11636 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11637 struct sk_buff *msg;
11638 void *hdr;
11639
11640 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11641 return;
11642
11643 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11644
11645 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11646 if (!msg)
11647 return;
11648
11649 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11650 if (!hdr) {
11651 nlmsg_free(msg);
11652 return;
11653 }
11654
11655 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11656 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11657 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11658 (ie_len && ie &&
11659 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11660 goto nla_put_failure;
11661
11662 genlmsg_end(msg, hdr);
11663
11664 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11665 NL80211_MCGRP_MLME, gfp);
11666 return;
11667
11668 nla_put_failure:
11669 genlmsg_cancel(msg, hdr);
11670 nlmsg_free(msg);
11671 }
11672 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11673
11674 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11675 struct net_device *netdev, const u8 *addr,
11676 enum nl80211_key_type key_type, int key_id,
11677 const u8 *tsc, gfp_t gfp)
11678 {
11679 struct sk_buff *msg;
11680 void *hdr;
11681
11682 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11683 if (!msg)
11684 return;
11685
11686 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11687 if (!hdr) {
11688 nlmsg_free(msg);
11689 return;
11690 }
11691
11692 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11693 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11694 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11695 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11696 (key_id != -1 &&
11697 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11698 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11699 goto nla_put_failure;
11700
11701 genlmsg_end(msg, hdr);
11702
11703 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11704 NL80211_MCGRP_MLME, gfp);
11705 return;
11706
11707 nla_put_failure:
11708 genlmsg_cancel(msg, hdr);
11709 nlmsg_free(msg);
11710 }
11711
11712 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11713 struct ieee80211_channel *channel_before,
11714 struct ieee80211_channel *channel_after)
11715 {
11716 struct sk_buff *msg;
11717 void *hdr;
11718 struct nlattr *nl_freq;
11719
11720 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11721 if (!msg)
11722 return;
11723
11724 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11725 if (!hdr) {
11726 nlmsg_free(msg);
11727 return;
11728 }
11729
11730 /*
11731 * Since we are applying the beacon hint to a wiphy we know its
11732 * wiphy_idx is valid
11733 */
11734 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11735 goto nla_put_failure;
11736
11737 /* Before */
11738 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11739 if (!nl_freq)
11740 goto nla_put_failure;
11741 if (nl80211_msg_put_channel(msg, channel_before, false))
11742 goto nla_put_failure;
11743 nla_nest_end(msg, nl_freq);
11744
11745 /* After */
11746 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11747 if (!nl_freq)
11748 goto nla_put_failure;
11749 if (nl80211_msg_put_channel(msg, channel_after, false))
11750 goto nla_put_failure;
11751 nla_nest_end(msg, nl_freq);
11752
11753 genlmsg_end(msg, hdr);
11754
11755 rcu_read_lock();
11756 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11757 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11758 rcu_read_unlock();
11759
11760 return;
11761
11762 nla_put_failure:
11763 genlmsg_cancel(msg, hdr);
11764 nlmsg_free(msg);
11765 }
11766
11767 static void nl80211_send_remain_on_chan_event(
11768 int cmd, struct cfg80211_registered_device *rdev,
11769 struct wireless_dev *wdev, u64 cookie,
11770 struct ieee80211_channel *chan,
11771 unsigned int duration, gfp_t gfp)
11772 {
11773 struct sk_buff *msg;
11774 void *hdr;
11775
11776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11777 if (!msg)
11778 return;
11779
11780 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11781 if (!hdr) {
11782 nlmsg_free(msg);
11783 return;
11784 }
11785
11786 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11787 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11788 wdev->netdev->ifindex)) ||
11789 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11790 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11791 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11792 NL80211_CHAN_NO_HT) ||
11793 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11794 goto nla_put_failure;
11795
11796 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11797 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11798 goto nla_put_failure;
11799
11800 genlmsg_end(msg, hdr);
11801
11802 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11803 NL80211_MCGRP_MLME, gfp);
11804 return;
11805
11806 nla_put_failure:
11807 genlmsg_cancel(msg, hdr);
11808 nlmsg_free(msg);
11809 }
11810
11811 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11812 struct ieee80211_channel *chan,
11813 unsigned int duration, gfp_t gfp)
11814 {
11815 struct wiphy *wiphy = wdev->wiphy;
11816 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11817
11818 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11819 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11820 rdev, wdev, cookie, chan,
11821 duration, gfp);
11822 }
11823 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11824
11825 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11826 struct ieee80211_channel *chan,
11827 gfp_t gfp)
11828 {
11829 struct wiphy *wiphy = wdev->wiphy;
11830 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11831
11832 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11833 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11834 rdev, wdev, cookie, chan, 0, gfp);
11835 }
11836 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11837
11838 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11839 struct station_info *sinfo, gfp_t gfp)
11840 {
11841 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11842 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11843 struct sk_buff *msg;
11844
11845 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11846
11847 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11848 if (!msg)
11849 return;
11850
11851 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11852 rdev, dev, mac_addr, sinfo) < 0) {
11853 nlmsg_free(msg);
11854 return;
11855 }
11856
11857 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11858 NL80211_MCGRP_MLME, gfp);
11859 }
11860 EXPORT_SYMBOL(cfg80211_new_sta);
11861
11862 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11863 struct station_info *sinfo, gfp_t gfp)
11864 {
11865 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11866 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11867 struct sk_buff *msg;
11868 struct station_info empty_sinfo = {};
11869
11870 if (!sinfo)
11871 sinfo = &empty_sinfo;
11872
11873 trace_cfg80211_del_sta(dev, mac_addr);
11874
11875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11876 if (!msg)
11877 return;
11878
11879 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11880 rdev, dev, mac_addr, sinfo) < 0) {
11881 nlmsg_free(msg);
11882 return;
11883 }
11884
11885 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11886 NL80211_MCGRP_MLME, gfp);
11887 }
11888 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11889
11890 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11891 enum nl80211_connect_failed_reason reason,
11892 gfp_t gfp)
11893 {
11894 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11895 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11896 struct sk_buff *msg;
11897 void *hdr;
11898
11899 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11900 if (!msg)
11901 return;
11902
11903 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11904 if (!hdr) {
11905 nlmsg_free(msg);
11906 return;
11907 }
11908
11909 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11910 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11911 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11912 goto nla_put_failure;
11913
11914 genlmsg_end(msg, hdr);
11915
11916 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11917 NL80211_MCGRP_MLME, gfp);
11918 return;
11919
11920 nla_put_failure:
11921 genlmsg_cancel(msg, hdr);
11922 nlmsg_free(msg);
11923 }
11924 EXPORT_SYMBOL(cfg80211_conn_failed);
11925
11926 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11927 const u8 *addr, gfp_t gfp)
11928 {
11929 struct wireless_dev *wdev = dev->ieee80211_ptr;
11930 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11931 struct sk_buff *msg;
11932 void *hdr;
11933 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11934
11935 if (!nlportid)
11936 return false;
11937
11938 msg = nlmsg_new(100, gfp);
11939 if (!msg)
11940 return true;
11941
11942 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11943 if (!hdr) {
11944 nlmsg_free(msg);
11945 return true;
11946 }
11947
11948 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11949 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11950 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11951 goto nla_put_failure;
11952
11953 genlmsg_end(msg, hdr);
11954 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11955 return true;
11956
11957 nla_put_failure:
11958 genlmsg_cancel(msg, hdr);
11959 nlmsg_free(msg);
11960 return true;
11961 }
11962
11963 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11964 const u8 *addr, gfp_t gfp)
11965 {
11966 struct wireless_dev *wdev = dev->ieee80211_ptr;
11967 bool ret;
11968
11969 trace_cfg80211_rx_spurious_frame(dev, addr);
11970
11971 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11972 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11973 trace_cfg80211_return_bool(false);
11974 return false;
11975 }
11976 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11977 addr, gfp);
11978 trace_cfg80211_return_bool(ret);
11979 return ret;
11980 }
11981 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11982
11983 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11984 const u8 *addr, gfp_t gfp)
11985 {
11986 struct wireless_dev *wdev = dev->ieee80211_ptr;
11987 bool ret;
11988
11989 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11990
11991 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11992 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11993 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11994 trace_cfg80211_return_bool(false);
11995 return false;
11996 }
11997 ret = __nl80211_unexpected_frame(dev,
11998 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11999 addr, gfp);
12000 trace_cfg80211_return_bool(ret);
12001 return ret;
12002 }
12003 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12004
12005 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12006 struct wireless_dev *wdev, u32 nlportid,
12007 int freq, int sig_dbm,
12008 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12009 {
12010 struct net_device *netdev = wdev->netdev;
12011 struct sk_buff *msg;
12012 void *hdr;
12013
12014 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12015 if (!msg)
12016 return -ENOMEM;
12017
12018 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12019 if (!hdr) {
12020 nlmsg_free(msg);
12021 return -ENOMEM;
12022 }
12023
12024 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12025 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12026 netdev->ifindex)) ||
12027 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12028 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12029 (sig_dbm &&
12030 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12031 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12032 (flags &&
12033 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12034 goto nla_put_failure;
12035
12036 genlmsg_end(msg, hdr);
12037
12038 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12039
12040 nla_put_failure:
12041 genlmsg_cancel(msg, hdr);
12042 nlmsg_free(msg);
12043 return -ENOBUFS;
12044 }
12045
12046 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12047 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12048 {
12049 struct wiphy *wiphy = wdev->wiphy;
12050 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12051 struct net_device *netdev = wdev->netdev;
12052 struct sk_buff *msg;
12053 void *hdr;
12054
12055 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12056
12057 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12058 if (!msg)
12059 return;
12060
12061 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12062 if (!hdr) {
12063 nlmsg_free(msg);
12064 return;
12065 }
12066
12067 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12068 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12069 netdev->ifindex)) ||
12070 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12071 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12072 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12073 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12074 goto nla_put_failure;
12075
12076 genlmsg_end(msg, hdr);
12077
12078 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12079 NL80211_MCGRP_MLME, gfp);
12080 return;
12081
12082 nla_put_failure:
12083 genlmsg_cancel(msg, hdr);
12084 nlmsg_free(msg);
12085 }
12086 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12087
12088 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12089 const char *mac, gfp_t gfp)
12090 {
12091 struct wireless_dev *wdev = dev->ieee80211_ptr;
12092 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12093 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12094 void **cb;
12095
12096 if (!msg)
12097 return NULL;
12098
12099 cb = (void **)msg->cb;
12100
12101 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12102 if (!cb[0]) {
12103 nlmsg_free(msg);
12104 return NULL;
12105 }
12106
12107 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12108 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12109 goto nla_put_failure;
12110
12111 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12112 goto nla_put_failure;
12113
12114 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12115 if (!cb[1])
12116 goto nla_put_failure;
12117
12118 cb[2] = rdev;
12119
12120 return msg;
12121 nla_put_failure:
12122 nlmsg_free(msg);
12123 return NULL;
12124 }
12125
12126 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12127 {
12128 void **cb = (void **)msg->cb;
12129 struct cfg80211_registered_device *rdev = cb[2];
12130
12131 nla_nest_end(msg, cb[1]);
12132 genlmsg_end(msg, cb[0]);
12133
12134 memset(msg->cb, 0, sizeof(msg->cb));
12135
12136 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12137 NL80211_MCGRP_MLME, gfp);
12138 }
12139
12140 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12141 enum nl80211_cqm_rssi_threshold_event rssi_event,
12142 gfp_t gfp)
12143 {
12144 struct sk_buff *msg;
12145
12146 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12147
12148 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12149 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12150 return;
12151
12152 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12153 if (!msg)
12154 return;
12155
12156 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12157 rssi_event))
12158 goto nla_put_failure;
12159
12160 cfg80211_send_cqm(msg, gfp);
12161
12162 return;
12163
12164 nla_put_failure:
12165 nlmsg_free(msg);
12166 }
12167 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12168
12169 void cfg80211_cqm_txe_notify(struct net_device *dev,
12170 const u8 *peer, u32 num_packets,
12171 u32 rate, u32 intvl, gfp_t gfp)
12172 {
12173 struct sk_buff *msg;
12174
12175 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12176 if (!msg)
12177 return;
12178
12179 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12180 goto nla_put_failure;
12181
12182 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12183 goto nla_put_failure;
12184
12185 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12186 goto nla_put_failure;
12187
12188 cfg80211_send_cqm(msg, gfp);
12189 return;
12190
12191 nla_put_failure:
12192 nlmsg_free(msg);
12193 }
12194 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12195
12196 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12197 const u8 *peer, u32 num_packets, gfp_t gfp)
12198 {
12199 struct sk_buff *msg;
12200
12201 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12202
12203 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12204 if (!msg)
12205 return;
12206
12207 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12208 goto nla_put_failure;
12209
12210 cfg80211_send_cqm(msg, gfp);
12211 return;
12212
12213 nla_put_failure:
12214 nlmsg_free(msg);
12215 }
12216 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12217
12218 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12219 {
12220 struct sk_buff *msg;
12221
12222 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12223 if (!msg)
12224 return;
12225
12226 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12227 goto nla_put_failure;
12228
12229 cfg80211_send_cqm(msg, gfp);
12230 return;
12231
12232 nla_put_failure:
12233 nlmsg_free(msg);
12234 }
12235 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12236
12237 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12238 struct net_device *netdev, const u8 *bssid,
12239 const u8 *replay_ctr, gfp_t gfp)
12240 {
12241 struct sk_buff *msg;
12242 struct nlattr *rekey_attr;
12243 void *hdr;
12244
12245 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12246 if (!msg)
12247 return;
12248
12249 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12250 if (!hdr) {
12251 nlmsg_free(msg);
12252 return;
12253 }
12254
12255 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12256 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12257 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12258 goto nla_put_failure;
12259
12260 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12261 if (!rekey_attr)
12262 goto nla_put_failure;
12263
12264 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12265 NL80211_REPLAY_CTR_LEN, replay_ctr))
12266 goto nla_put_failure;
12267
12268 nla_nest_end(msg, rekey_attr);
12269
12270 genlmsg_end(msg, hdr);
12271
12272 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12273 NL80211_MCGRP_MLME, gfp);
12274 return;
12275
12276 nla_put_failure:
12277 genlmsg_cancel(msg, hdr);
12278 nlmsg_free(msg);
12279 }
12280
12281 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12282 const u8 *replay_ctr, gfp_t gfp)
12283 {
12284 struct wireless_dev *wdev = dev->ieee80211_ptr;
12285 struct wiphy *wiphy = wdev->wiphy;
12286 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12287
12288 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12289 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12290 }
12291 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12292
12293 static void
12294 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12295 struct net_device *netdev, int index,
12296 const u8 *bssid, bool preauth, gfp_t gfp)
12297 {
12298 struct sk_buff *msg;
12299 struct nlattr *attr;
12300 void *hdr;
12301
12302 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12303 if (!msg)
12304 return;
12305
12306 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12307 if (!hdr) {
12308 nlmsg_free(msg);
12309 return;
12310 }
12311
12312 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12313 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12314 goto nla_put_failure;
12315
12316 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12317 if (!attr)
12318 goto nla_put_failure;
12319
12320 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12321 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12322 (preauth &&
12323 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12324 goto nla_put_failure;
12325
12326 nla_nest_end(msg, attr);
12327
12328 genlmsg_end(msg, hdr);
12329
12330 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12331 NL80211_MCGRP_MLME, gfp);
12332 return;
12333
12334 nla_put_failure:
12335 genlmsg_cancel(msg, hdr);
12336 nlmsg_free(msg);
12337 }
12338
12339 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12340 const u8 *bssid, bool preauth, gfp_t gfp)
12341 {
12342 struct wireless_dev *wdev = dev->ieee80211_ptr;
12343 struct wiphy *wiphy = wdev->wiphy;
12344 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12345
12346 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12347 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12348 }
12349 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12350
12351 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12352 struct net_device *netdev,
12353 struct cfg80211_chan_def *chandef,
12354 gfp_t gfp,
12355 enum nl80211_commands notif,
12356 u8 count)
12357 {
12358 struct sk_buff *msg;
12359 void *hdr;
12360
12361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12362 if (!msg)
12363 return;
12364
12365 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12366 if (!hdr) {
12367 nlmsg_free(msg);
12368 return;
12369 }
12370
12371 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12372 goto nla_put_failure;
12373
12374 if (nl80211_send_chandef(msg, chandef))
12375 goto nla_put_failure;
12376
12377 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12378 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12379 goto nla_put_failure;
12380
12381 genlmsg_end(msg, hdr);
12382
12383 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12384 NL80211_MCGRP_MLME, gfp);
12385 return;
12386
12387 nla_put_failure:
12388 genlmsg_cancel(msg, hdr);
12389 nlmsg_free(msg);
12390 }
12391
12392 void cfg80211_ch_switch_notify(struct net_device *dev,
12393 struct cfg80211_chan_def *chandef)
12394 {
12395 struct wireless_dev *wdev = dev->ieee80211_ptr;
12396 struct wiphy *wiphy = wdev->wiphy;
12397 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12398
12399 ASSERT_WDEV_LOCK(wdev);
12400
12401 trace_cfg80211_ch_switch_notify(dev, chandef);
12402
12403 wdev->chandef = *chandef;
12404 wdev->preset_chandef = *chandef;
12405 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12406 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12407 }
12408 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12409
12410 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12411 struct cfg80211_chan_def *chandef,
12412 u8 count)
12413 {
12414 struct wireless_dev *wdev = dev->ieee80211_ptr;
12415 struct wiphy *wiphy = wdev->wiphy;
12416 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12417
12418 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12419
12420 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12421 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12422 }
12423 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12424
12425 void
12426 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12427 const struct cfg80211_chan_def *chandef,
12428 enum nl80211_radar_event event,
12429 struct net_device *netdev, gfp_t gfp)
12430 {
12431 struct sk_buff *msg;
12432 void *hdr;
12433
12434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12435 if (!msg)
12436 return;
12437
12438 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12439 if (!hdr) {
12440 nlmsg_free(msg);
12441 return;
12442 }
12443
12444 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12445 goto nla_put_failure;
12446
12447 /* NOP and radar events don't need a netdev parameter */
12448 if (netdev) {
12449 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12450
12451 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12452 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12453 goto nla_put_failure;
12454 }
12455
12456 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12457 goto nla_put_failure;
12458
12459 if (nl80211_send_chandef(msg, chandef))
12460 goto nla_put_failure;
12461
12462 genlmsg_end(msg, hdr);
12463
12464 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12465 NL80211_MCGRP_MLME, gfp);
12466 return;
12467
12468 nla_put_failure:
12469 genlmsg_cancel(msg, hdr);
12470 nlmsg_free(msg);
12471 }
12472
12473 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12474 u64 cookie, bool acked, gfp_t gfp)
12475 {
12476 struct wireless_dev *wdev = dev->ieee80211_ptr;
12477 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12478 struct sk_buff *msg;
12479 void *hdr;
12480
12481 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12482
12483 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12484
12485 if (!msg)
12486 return;
12487
12488 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12489 if (!hdr) {
12490 nlmsg_free(msg);
12491 return;
12492 }
12493
12494 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12495 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12496 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12497 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12498 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12499 goto nla_put_failure;
12500
12501 genlmsg_end(msg, hdr);
12502
12503 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12504 NL80211_MCGRP_MLME, gfp);
12505 return;
12506
12507 nla_put_failure:
12508 genlmsg_cancel(msg, hdr);
12509 nlmsg_free(msg);
12510 }
12511 EXPORT_SYMBOL(cfg80211_probe_status);
12512
12513 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12514 const u8 *frame, size_t len,
12515 int freq, int sig_dbm)
12516 {
12517 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12518 struct sk_buff *msg;
12519 void *hdr;
12520 struct cfg80211_beacon_registration *reg;
12521
12522 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12523
12524 spin_lock_bh(&rdev->beacon_registrations_lock);
12525 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12526 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12527 if (!msg) {
12528 spin_unlock_bh(&rdev->beacon_registrations_lock);
12529 return;
12530 }
12531
12532 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12533 if (!hdr)
12534 goto nla_put_failure;
12535
12536 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12537 (freq &&
12538 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12539 (sig_dbm &&
12540 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12541 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12542 goto nla_put_failure;
12543
12544 genlmsg_end(msg, hdr);
12545
12546 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12547 }
12548 spin_unlock_bh(&rdev->beacon_registrations_lock);
12549 return;
12550
12551 nla_put_failure:
12552 spin_unlock_bh(&rdev->beacon_registrations_lock);
12553 if (hdr)
12554 genlmsg_cancel(msg, hdr);
12555 nlmsg_free(msg);
12556 }
12557 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12558
12559 #ifdef CONFIG_PM
12560 static int cfg80211_net_detect_results(struct sk_buff *msg,
12561 struct cfg80211_wowlan_wakeup *wakeup)
12562 {
12563 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12564 struct nlattr *nl_results, *nl_match, *nl_freqs;
12565 int i, j;
12566
12567 nl_results = nla_nest_start(
12568 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12569 if (!nl_results)
12570 return -EMSGSIZE;
12571
12572 for (i = 0; i < nd->n_matches; i++) {
12573 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12574
12575 nl_match = nla_nest_start(msg, i);
12576 if (!nl_match)
12577 break;
12578
12579 /* The SSID attribute is optional in nl80211, but for
12580 * simplicity reasons it's always present in the
12581 * cfg80211 structure. If a driver can't pass the
12582 * SSID, that needs to be changed. A zero length SSID
12583 * is still a valid SSID (wildcard), so it cannot be
12584 * used for this purpose.
12585 */
12586 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12587 match->ssid.ssid)) {
12588 nla_nest_cancel(msg, nl_match);
12589 goto out;
12590 }
12591
12592 if (match->n_channels) {
12593 nl_freqs = nla_nest_start(
12594 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12595 if (!nl_freqs) {
12596 nla_nest_cancel(msg, nl_match);
12597 goto out;
12598 }
12599
12600 for (j = 0; j < match->n_channels; j++) {
12601 if (nla_put_u32(msg, j, match->channels[j])) {
12602 nla_nest_cancel(msg, nl_freqs);
12603 nla_nest_cancel(msg, nl_match);
12604 goto out;
12605 }
12606 }
12607
12608 nla_nest_end(msg, nl_freqs);
12609 }
12610
12611 nla_nest_end(msg, nl_match);
12612 }
12613
12614 out:
12615 nla_nest_end(msg, nl_results);
12616 return 0;
12617 }
12618
12619 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12620 struct cfg80211_wowlan_wakeup *wakeup,
12621 gfp_t gfp)
12622 {
12623 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12624 struct sk_buff *msg;
12625 void *hdr;
12626 int size = 200;
12627
12628 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12629
12630 if (wakeup)
12631 size += wakeup->packet_present_len;
12632
12633 msg = nlmsg_new(size, gfp);
12634 if (!msg)
12635 return;
12636
12637 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12638 if (!hdr)
12639 goto free_msg;
12640
12641 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12642 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12643 goto free_msg;
12644
12645 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12646 wdev->netdev->ifindex))
12647 goto free_msg;
12648
12649 if (wakeup) {
12650 struct nlattr *reasons;
12651
12652 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12653 if (!reasons)
12654 goto free_msg;
12655
12656 if (wakeup->disconnect &&
12657 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12658 goto free_msg;
12659 if (wakeup->magic_pkt &&
12660 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12661 goto free_msg;
12662 if (wakeup->gtk_rekey_failure &&
12663 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12664 goto free_msg;
12665 if (wakeup->eap_identity_req &&
12666 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12667 goto free_msg;
12668 if (wakeup->four_way_handshake &&
12669 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12670 goto free_msg;
12671 if (wakeup->rfkill_release &&
12672 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12673 goto free_msg;
12674
12675 if (wakeup->pattern_idx >= 0 &&
12676 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12677 wakeup->pattern_idx))
12678 goto free_msg;
12679
12680 if (wakeup->tcp_match &&
12681 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12682 goto free_msg;
12683
12684 if (wakeup->tcp_connlost &&
12685 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12686 goto free_msg;
12687
12688 if (wakeup->tcp_nomoretokens &&
12689 nla_put_flag(msg,
12690 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12691 goto free_msg;
12692
12693 if (wakeup->packet) {
12694 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12695 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12696
12697 if (!wakeup->packet_80211) {
12698 pkt_attr =
12699 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12700 len_attr =
12701 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12702 }
12703
12704 if (wakeup->packet_len &&
12705 nla_put_u32(msg, len_attr, wakeup->packet_len))
12706 goto free_msg;
12707
12708 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12709 wakeup->packet))
12710 goto free_msg;
12711 }
12712
12713 if (wakeup->net_detect &&
12714 cfg80211_net_detect_results(msg, wakeup))
12715 goto free_msg;
12716
12717 nla_nest_end(msg, reasons);
12718 }
12719
12720 genlmsg_end(msg, hdr);
12721
12722 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12723 NL80211_MCGRP_MLME, gfp);
12724 return;
12725
12726 free_msg:
12727 nlmsg_free(msg);
12728 }
12729 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12730 #endif
12731
12732 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12733 enum nl80211_tdls_operation oper,
12734 u16 reason_code, gfp_t gfp)
12735 {
12736 struct wireless_dev *wdev = dev->ieee80211_ptr;
12737 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12738 struct sk_buff *msg;
12739 void *hdr;
12740
12741 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12742 reason_code);
12743
12744 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12745 if (!msg)
12746 return;
12747
12748 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12749 if (!hdr) {
12750 nlmsg_free(msg);
12751 return;
12752 }
12753
12754 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12755 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12756 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12757 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12758 (reason_code > 0 &&
12759 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12760 goto nla_put_failure;
12761
12762 genlmsg_end(msg, hdr);
12763
12764 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12765 NL80211_MCGRP_MLME, gfp);
12766 return;
12767
12768 nla_put_failure:
12769 genlmsg_cancel(msg, hdr);
12770 nlmsg_free(msg);
12771 }
12772 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12773
12774 static int nl80211_netlink_notify(struct notifier_block * nb,
12775 unsigned long state,
12776 void *_notify)
12777 {
12778 struct netlink_notify *notify = _notify;
12779 struct cfg80211_registered_device *rdev;
12780 struct wireless_dev *wdev;
12781 struct cfg80211_beacon_registration *reg, *tmp;
12782
12783 if (state != NETLINK_URELEASE)
12784 return NOTIFY_DONE;
12785
12786 rcu_read_lock();
12787
12788 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12789 bool schedule_destroy_work = false;
12790 bool schedule_scan_stop = false;
12791 struct cfg80211_sched_scan_request *sched_scan_req =
12792 rcu_dereference(rdev->sched_scan_req);
12793
12794 if (sched_scan_req && notify->portid &&
12795 sched_scan_req->owner_nlportid == notify->portid)
12796 schedule_scan_stop = true;
12797
12798 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12799 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12800
12801 if (wdev->owner_nlportid == notify->portid)
12802 schedule_destroy_work = true;
12803 }
12804
12805 spin_lock_bh(&rdev->beacon_registrations_lock);
12806 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12807 list) {
12808 if (reg->nlportid == notify->portid) {
12809 list_del(&reg->list);
12810 kfree(reg);
12811 break;
12812 }
12813 }
12814 spin_unlock_bh(&rdev->beacon_registrations_lock);
12815
12816 if (schedule_destroy_work) {
12817 struct cfg80211_iface_destroy *destroy;
12818
12819 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12820 if (destroy) {
12821 destroy->nlportid = notify->portid;
12822 spin_lock(&rdev->destroy_list_lock);
12823 list_add(&destroy->list, &rdev->destroy_list);
12824 spin_unlock(&rdev->destroy_list_lock);
12825 schedule_work(&rdev->destroy_work);
12826 }
12827 } else if (schedule_scan_stop) {
12828 sched_scan_req->owner_nlportid = 0;
12829
12830 if (rdev->ops->sched_scan_stop &&
12831 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12832 schedule_work(&rdev->sched_scan_stop_wk);
12833 }
12834 }
12835
12836 rcu_read_unlock();
12837
12838 /*
12839 * It is possible that the user space process that is controlling the
12840 * indoor setting disappeared, so notify the regulatory core.
12841 */
12842 regulatory_netlink_notify(notify->portid);
12843 return NOTIFY_OK;
12844 }
12845
12846 static struct notifier_block nl80211_netlink_notifier = {
12847 .notifier_call = nl80211_netlink_notify,
12848 };
12849
12850 void cfg80211_ft_event(struct net_device *netdev,
12851 struct cfg80211_ft_event_params *ft_event)
12852 {
12853 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12854 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12855 struct sk_buff *msg;
12856 void *hdr;
12857
12858 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12859
12860 if (!ft_event->target_ap)
12861 return;
12862
12863 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12864 if (!msg)
12865 return;
12866
12867 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12868 if (!hdr)
12869 goto out;
12870
12871 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12872 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12873 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12874 goto out;
12875
12876 if (ft_event->ies &&
12877 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12878 goto out;
12879 if (ft_event->ric_ies &&
12880 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12881 ft_event->ric_ies))
12882 goto out;
12883
12884 genlmsg_end(msg, hdr);
12885
12886 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12887 NL80211_MCGRP_MLME, GFP_KERNEL);
12888 return;
12889 out:
12890 nlmsg_free(msg);
12891 }
12892 EXPORT_SYMBOL(cfg80211_ft_event);
12893
12894 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12895 {
12896 struct cfg80211_registered_device *rdev;
12897 struct sk_buff *msg;
12898 void *hdr;
12899 u32 nlportid;
12900
12901 rdev = wiphy_to_rdev(wdev->wiphy);
12902 if (!rdev->crit_proto_nlportid)
12903 return;
12904
12905 nlportid = rdev->crit_proto_nlportid;
12906 rdev->crit_proto_nlportid = 0;
12907
12908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12909 if (!msg)
12910 return;
12911
12912 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12913 if (!hdr)
12914 goto nla_put_failure;
12915
12916 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12917 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12918 goto nla_put_failure;
12919
12920 genlmsg_end(msg, hdr);
12921
12922 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12923 return;
12924
12925 nla_put_failure:
12926 if (hdr)
12927 genlmsg_cancel(msg, hdr);
12928 nlmsg_free(msg);
12929
12930 }
12931 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12932
12933 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12934 {
12935 struct wiphy *wiphy = wdev->wiphy;
12936 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12937 struct sk_buff *msg;
12938 void *hdr;
12939
12940 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12941 if (!msg)
12942 return;
12943
12944 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12945 if (!hdr)
12946 goto out;
12947
12948 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12949 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12950 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12951 goto out;
12952
12953 genlmsg_end(msg, hdr);
12954
12955 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12956 NL80211_MCGRP_MLME, GFP_KERNEL);
12957 return;
12958 out:
12959 nlmsg_free(msg);
12960 }
12961
12962 /* initialisation/exit functions */
12963
12964 int nl80211_init(void)
12965 {
12966 int err;
12967
12968 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12969 nl80211_mcgrps);
12970 if (err)
12971 return err;
12972
12973 err = netlink_register_notifier(&nl80211_netlink_notifier);
12974 if (err)
12975 goto err_out;
12976
12977 return 0;
12978 err_out:
12979 genl_unregister_family(&nl80211_fam);
12980 return err;
12981 }
12982
12983 void nl80211_exit(void)
12984 {
12985 netlink_unregister_notifier(&nl80211_netlink_notifier);
12986 genl_unregister_family(&nl80211_fam);
12987 }
Linux kernel - Deliverables
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