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cfg80211: support configuring vif mac addr on create
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = "config", },
63 [NL80211_MCGRP_SCAN] = { .name = "scan", },
64 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
65 [NL80211_MCGRP_MLME] = { .name = "mlme", },
66 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 };
399
400 /* policy for the key attributes */
401 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
402 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
403 [NL80211_KEY_IDX] = { .type = NLA_U8 },
404 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
405 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
406 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
407 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
408 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
409 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
410 };
411
412 /* policy for the key default flags */
413 static const struct nla_policy
414 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
415 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
416 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
417 };
418
419 /* policy for WoWLAN attributes */
420 static const struct nla_policy
421 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
422 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
423 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
424 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
426 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
431 };
432
433 static const struct nla_policy
434 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
435 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
436 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
437 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
438 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
439 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
440 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
441 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
442 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
443 },
444 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
445 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
446 },
447 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
448 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
449 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
450 };
451
452 /* policy for coalesce rule attributes */
453 static const struct nla_policy
454 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
455 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
456 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
457 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
458 };
459
460 /* policy for GTK rekey offload attributes */
461 static const struct nla_policy
462 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
463 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
464 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
465 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
466 };
467
468 static const struct nla_policy
469 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
470 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
471 .len = IEEE80211_MAX_SSID_LEN },
472 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
473 };
474
475 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
476 struct netlink_callback *cb,
477 struct cfg80211_registered_device **rdev,
478 struct wireless_dev **wdev)
479 {
480 int err;
481
482 rtnl_lock();
483
484 if (!cb->args[0]) {
485 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
486 nl80211_fam.attrbuf, nl80211_fam.maxattr,
487 nl80211_policy);
488 if (err)
489 goto out_unlock;
490
491 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
492 nl80211_fam.attrbuf);
493 if (IS_ERR(*wdev)) {
494 err = PTR_ERR(*wdev);
495 goto out_unlock;
496 }
497 *rdev = wiphy_to_rdev((*wdev)->wiphy);
498 /* 0 is the first index - add 1 to parse only once */
499 cb->args[0] = (*rdev)->wiphy_idx + 1;
500 cb->args[1] = (*wdev)->identifier;
501 } else {
502 /* subtract the 1 again here */
503 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
504 struct wireless_dev *tmp;
505
506 if (!wiphy) {
507 err = -ENODEV;
508 goto out_unlock;
509 }
510 *rdev = wiphy_to_rdev(wiphy);
511 *wdev = NULL;
512
513 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
514 if (tmp->identifier == cb->args[1]) {
515 *wdev = tmp;
516 break;
517 }
518 }
519
520 if (!*wdev) {
521 err = -ENODEV;
522 goto out_unlock;
523 }
524 }
525
526 return 0;
527 out_unlock:
528 rtnl_unlock();
529 return err;
530 }
531
532 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
533 {
534 rtnl_unlock();
535 }
536
537 /* IE validation */
538 static bool is_valid_ie_attr(const struct nlattr *attr)
539 {
540 const u8 *pos;
541 int len;
542
543 if (!attr)
544 return true;
545
546 pos = nla_data(attr);
547 len = nla_len(attr);
548
549 while (len) {
550 u8 elemlen;
551
552 if (len < 2)
553 return false;
554 len -= 2;
555
556 elemlen = pos[1];
557 if (elemlen > len)
558 return false;
559
560 len -= elemlen;
561 pos += 2 + elemlen;
562 }
563
564 return true;
565 }
566
567 /* message building helper */
568 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
569 int flags, u8 cmd)
570 {
571 /* since there is no private header just add the generic one */
572 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
573 }
574
575 static int nl80211_msg_put_channel(struct sk_buff *msg,
576 struct ieee80211_channel *chan,
577 bool large)
578 {
579 /* Some channels must be completely excluded from the
580 * list to protect old user-space tools from breaking
581 */
582 if (!large && chan->flags &
583 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
584 return 0;
585
586 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
587 chan->center_freq))
588 goto nla_put_failure;
589
590 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
591 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
592 goto nla_put_failure;
593 if (chan->flags & IEEE80211_CHAN_NO_IR) {
594 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
595 goto nla_put_failure;
596 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
597 goto nla_put_failure;
598 }
599 if (chan->flags & IEEE80211_CHAN_RADAR) {
600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
601 goto nla_put_failure;
602 if (large) {
603 u32 time;
604
605 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
606
607 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
608 chan->dfs_state))
609 goto nla_put_failure;
610 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
611 time))
612 goto nla_put_failure;
613 if (nla_put_u32(msg,
614 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
615 chan->dfs_cac_ms))
616 goto nla_put_failure;
617 }
618 }
619
620 if (large) {
621 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
622 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
623 goto nla_put_failure;
624 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
625 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
626 goto nla_put_failure;
627 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
644 goto nla_put_failure;
645 }
646
647 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
648 DBM_TO_MBM(chan->max_power)))
649 goto nla_put_failure;
650
651 return 0;
652
653 nla_put_failure:
654 return -ENOBUFS;
655 }
656
657 /* netlink command implementations */
658
659 struct key_parse {
660 struct key_params p;
661 int idx;
662 int type;
663 bool def, defmgmt;
664 bool def_uni, def_multi;
665 };
666
667 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
668 {
669 struct nlattr *tb[NL80211_KEY_MAX + 1];
670 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
671 nl80211_key_policy);
672 if (err)
673 return err;
674
675 k->def = !!tb[NL80211_KEY_DEFAULT];
676 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
677
678 if (k->def) {
679 k->def_uni = true;
680 k->def_multi = true;
681 }
682 if (k->defmgmt)
683 k->def_multi = true;
684
685 if (tb[NL80211_KEY_IDX])
686 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
687
688 if (tb[NL80211_KEY_DATA]) {
689 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
690 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
691 }
692
693 if (tb[NL80211_KEY_SEQ]) {
694 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
695 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
696 }
697
698 if (tb[NL80211_KEY_CIPHER])
699 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
700
701 if (tb[NL80211_KEY_TYPE]) {
702 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
703 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
704 return -EINVAL;
705 }
706
707 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
708 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
709 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
710 tb[NL80211_KEY_DEFAULT_TYPES],
711 nl80211_key_default_policy);
712 if (err)
713 return err;
714
715 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
716 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
717 }
718
719 return 0;
720 }
721
722 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
723 {
724 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
725 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
726 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
727 }
728
729 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
730 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
731 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
732 }
733
734 if (info->attrs[NL80211_ATTR_KEY_IDX])
735 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
736
737 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
738 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
739
740 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
741 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
742
743 if (k->def) {
744 k->def_uni = true;
745 k->def_multi = true;
746 }
747 if (k->defmgmt)
748 k->def_multi = true;
749
750 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
751 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
752 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
753 return -EINVAL;
754 }
755
756 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
757 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
758 int err = nla_parse_nested(
759 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
760 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
761 nl80211_key_default_policy);
762 if (err)
763 return err;
764
765 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
766 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
767 }
768
769 return 0;
770 }
771
772 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
773 {
774 int err;
775
776 memset(k, 0, sizeof(*k));
777 k->idx = -1;
778 k->type = -1;
779
780 if (info->attrs[NL80211_ATTR_KEY])
781 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
782 else
783 err = nl80211_parse_key_old(info, k);
784
785 if (err)
786 return err;
787
788 if (k->def && k->defmgmt)
789 return -EINVAL;
790
791 if (k->defmgmt) {
792 if (k->def_uni || !k->def_multi)
793 return -EINVAL;
794 }
795
796 if (k->idx != -1) {
797 if (k->defmgmt) {
798 if (k->idx < 4 || k->idx > 5)
799 return -EINVAL;
800 } else if (k->def) {
801 if (k->idx < 0 || k->idx > 3)
802 return -EINVAL;
803 } else {
804 if (k->idx < 0 || k->idx > 5)
805 return -EINVAL;
806 }
807 }
808
809 return 0;
810 }
811
812 static struct cfg80211_cached_keys *
813 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
814 struct nlattr *keys, bool *no_ht)
815 {
816 struct key_parse parse;
817 struct nlattr *key;
818 struct cfg80211_cached_keys *result;
819 int rem, err, def = 0;
820
821 result = kzalloc(sizeof(*result), GFP_KERNEL);
822 if (!result)
823 return ERR_PTR(-ENOMEM);
824
825 result->def = -1;
826 result->defmgmt = -1;
827
828 nla_for_each_nested(key, keys, rem) {
829 memset(&parse, 0, sizeof(parse));
830 parse.idx = -1;
831
832 err = nl80211_parse_key_new(key, &parse);
833 if (err)
834 goto error;
835 err = -EINVAL;
836 if (!parse.p.key)
837 goto error;
838 if (parse.idx < 0 || parse.idx > 4)
839 goto error;
840 if (parse.def) {
841 if (def)
842 goto error;
843 def = 1;
844 result->def = parse.idx;
845 if (!parse.def_uni || !parse.def_multi)
846 goto error;
847 } else if (parse.defmgmt)
848 goto error;
849 err = cfg80211_validate_key_settings(rdev, &parse.p,
850 parse.idx, false, NULL);
851 if (err)
852 goto error;
853 result->params[parse.idx].cipher = parse.p.cipher;
854 result->params[parse.idx].key_len = parse.p.key_len;
855 result->params[parse.idx].key = result->data[parse.idx];
856 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
857
858 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
859 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
860 if (no_ht)
861 *no_ht = true;
862 }
863 }
864
865 return result;
866 error:
867 kfree(result);
868 return ERR_PTR(err);
869 }
870
871 static int nl80211_key_allowed(struct wireless_dev *wdev)
872 {
873 ASSERT_WDEV_LOCK(wdev);
874
875 switch (wdev->iftype) {
876 case NL80211_IFTYPE_AP:
877 case NL80211_IFTYPE_AP_VLAN:
878 case NL80211_IFTYPE_P2P_GO:
879 case NL80211_IFTYPE_MESH_POINT:
880 break;
881 case NL80211_IFTYPE_ADHOC:
882 case NL80211_IFTYPE_STATION:
883 case NL80211_IFTYPE_P2P_CLIENT:
884 if (!wdev->current_bss)
885 return -ENOLINK;
886 break;
887 default:
888 return -EINVAL;
889 }
890
891 return 0;
892 }
893
894 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
895 struct nlattr *tb)
896 {
897 struct ieee80211_channel *chan;
898
899 if (tb == NULL)
900 return NULL;
901 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
902 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
903 return NULL;
904 return chan;
905 }
906
907 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
908 {
909 struct nlattr *nl_modes = nla_nest_start(msg, attr);
910 int i;
911
912 if (!nl_modes)
913 goto nla_put_failure;
914
915 i = 0;
916 while (ifmodes) {
917 if ((ifmodes & 1) && nla_put_flag(msg, i))
918 goto nla_put_failure;
919 ifmodes >>= 1;
920 i++;
921 }
922
923 nla_nest_end(msg, nl_modes);
924 return 0;
925
926 nla_put_failure:
927 return -ENOBUFS;
928 }
929
930 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
931 struct sk_buff *msg,
932 bool large)
933 {
934 struct nlattr *nl_combis;
935 int i, j;
936
937 nl_combis = nla_nest_start(msg,
938 NL80211_ATTR_INTERFACE_COMBINATIONS);
939 if (!nl_combis)
940 goto nla_put_failure;
941
942 for (i = 0; i < wiphy->n_iface_combinations; i++) {
943 const struct ieee80211_iface_combination *c;
944 struct nlattr *nl_combi, *nl_limits;
945
946 c = &wiphy->iface_combinations[i];
947
948 nl_combi = nla_nest_start(msg, i + 1);
949 if (!nl_combi)
950 goto nla_put_failure;
951
952 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
953 if (!nl_limits)
954 goto nla_put_failure;
955
956 for (j = 0; j < c->n_limits; j++) {
957 struct nlattr *nl_limit;
958
959 nl_limit = nla_nest_start(msg, j + 1);
960 if (!nl_limit)
961 goto nla_put_failure;
962 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
963 c->limits[j].max))
964 goto nla_put_failure;
965 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
966 c->limits[j].types))
967 goto nla_put_failure;
968 nla_nest_end(msg, nl_limit);
969 }
970
971 nla_nest_end(msg, nl_limits);
972
973 if (c->beacon_int_infra_match &&
974 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
975 goto nla_put_failure;
976 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
977 c->num_different_channels) ||
978 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
979 c->max_interfaces))
980 goto nla_put_failure;
981 if (large &&
982 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
983 c->radar_detect_widths) ||
984 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
985 c->radar_detect_regions)))
986 goto nla_put_failure;
987
988 nla_nest_end(msg, nl_combi);
989 }
990
991 nla_nest_end(msg, nl_combis);
992
993 return 0;
994 nla_put_failure:
995 return -ENOBUFS;
996 }
997
998 #ifdef CONFIG_PM
999 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1000 struct sk_buff *msg)
1001 {
1002 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1003 struct nlattr *nl_tcp;
1004
1005 if (!tcp)
1006 return 0;
1007
1008 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1009 if (!nl_tcp)
1010 return -ENOBUFS;
1011
1012 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1013 tcp->data_payload_max))
1014 return -ENOBUFS;
1015
1016 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1017 tcp->data_payload_max))
1018 return -ENOBUFS;
1019
1020 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1021 return -ENOBUFS;
1022
1023 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1024 sizeof(*tcp->tok), tcp->tok))
1025 return -ENOBUFS;
1026
1027 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1028 tcp->data_interval_max))
1029 return -ENOBUFS;
1030
1031 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1032 tcp->wake_payload_max))
1033 return -ENOBUFS;
1034
1035 nla_nest_end(msg, nl_tcp);
1036 return 0;
1037 }
1038
1039 static int nl80211_send_wowlan(struct sk_buff *msg,
1040 struct cfg80211_registered_device *rdev,
1041 bool large)
1042 {
1043 struct nlattr *nl_wowlan;
1044
1045 if (!rdev->wiphy.wowlan)
1046 return 0;
1047
1048 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1049 if (!nl_wowlan)
1050 return -ENOBUFS;
1051
1052 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1053 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1054 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1055 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1056 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1057 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1058 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1059 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1060 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1061 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1062 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1068 return -ENOBUFS;
1069
1070 if (rdev->wiphy.wowlan->n_patterns) {
1071 struct nl80211_pattern_support pat = {
1072 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1073 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1074 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1075 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1076 };
1077
1078 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1079 sizeof(pat), &pat))
1080 return -ENOBUFS;
1081 }
1082
1083 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1084 return -ENOBUFS;
1085
1086 nla_nest_end(msg, nl_wowlan);
1087
1088 return 0;
1089 }
1090 #endif
1091
1092 static int nl80211_send_coalesce(struct sk_buff *msg,
1093 struct cfg80211_registered_device *rdev)
1094 {
1095 struct nl80211_coalesce_rule_support rule;
1096
1097 if (!rdev->wiphy.coalesce)
1098 return 0;
1099
1100 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1101 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1102 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1103 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1104 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1105 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1106
1107 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1108 return -ENOBUFS;
1109
1110 return 0;
1111 }
1112
1113 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1114 struct ieee80211_supported_band *sband)
1115 {
1116 struct nlattr *nl_rates, *nl_rate;
1117 struct ieee80211_rate *rate;
1118 int i;
1119
1120 /* add HT info */
1121 if (sband->ht_cap.ht_supported &&
1122 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1123 sizeof(sband->ht_cap.mcs),
1124 &sband->ht_cap.mcs) ||
1125 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1126 sband->ht_cap.cap) ||
1127 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1128 sband->ht_cap.ampdu_factor) ||
1129 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1130 sband->ht_cap.ampdu_density)))
1131 return -ENOBUFS;
1132
1133 /* add VHT info */
1134 if (sband->vht_cap.vht_supported &&
1135 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1136 sizeof(sband->vht_cap.vht_mcs),
1137 &sband->vht_cap.vht_mcs) ||
1138 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1139 sband->vht_cap.cap)))
1140 return -ENOBUFS;
1141
1142 /* add bitrates */
1143 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1144 if (!nl_rates)
1145 return -ENOBUFS;
1146
1147 for (i = 0; i < sband->n_bitrates; i++) {
1148 nl_rate = nla_nest_start(msg, i);
1149 if (!nl_rate)
1150 return -ENOBUFS;
1151
1152 rate = &sband->bitrates[i];
1153 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1154 rate->bitrate))
1155 return -ENOBUFS;
1156 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1157 nla_put_flag(msg,
1158 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1159 return -ENOBUFS;
1160
1161 nla_nest_end(msg, nl_rate);
1162 }
1163
1164 nla_nest_end(msg, nl_rates);
1165
1166 return 0;
1167 }
1168
1169 static int
1170 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1171 const struct ieee80211_txrx_stypes *mgmt_stypes)
1172 {
1173 u16 stypes;
1174 struct nlattr *nl_ftypes, *nl_ifs;
1175 enum nl80211_iftype ift;
1176 int i;
1177
1178 if (!mgmt_stypes)
1179 return 0;
1180
1181 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1182 if (!nl_ifs)
1183 return -ENOBUFS;
1184
1185 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1186 nl_ftypes = nla_nest_start(msg, ift);
1187 if (!nl_ftypes)
1188 return -ENOBUFS;
1189 i = 0;
1190 stypes = mgmt_stypes[ift].tx;
1191 while (stypes) {
1192 if ((stypes & 1) &&
1193 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1194 (i << 4) | IEEE80211_FTYPE_MGMT))
1195 return -ENOBUFS;
1196 stypes >>= 1;
1197 i++;
1198 }
1199 nla_nest_end(msg, nl_ftypes);
1200 }
1201
1202 nla_nest_end(msg, nl_ifs);
1203
1204 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1205 if (!nl_ifs)
1206 return -ENOBUFS;
1207
1208 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1209 nl_ftypes = nla_nest_start(msg, ift);
1210 if (!nl_ftypes)
1211 return -ENOBUFS;
1212 i = 0;
1213 stypes = mgmt_stypes[ift].rx;
1214 while (stypes) {
1215 if ((stypes & 1) &&
1216 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1217 (i << 4) | IEEE80211_FTYPE_MGMT))
1218 return -ENOBUFS;
1219 stypes >>= 1;
1220 i++;
1221 }
1222 nla_nest_end(msg, nl_ftypes);
1223 }
1224 nla_nest_end(msg, nl_ifs);
1225
1226 return 0;
1227 }
1228
1229 struct nl80211_dump_wiphy_state {
1230 s64 filter_wiphy;
1231 long start;
1232 long split_start, band_start, chan_start;
1233 bool split;
1234 };
1235
1236 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1237 enum nl80211_commands cmd,
1238 struct sk_buff *msg, u32 portid, u32 seq,
1239 int flags, struct nl80211_dump_wiphy_state *state)
1240 {
1241 void *hdr;
1242 struct nlattr *nl_bands, *nl_band;
1243 struct nlattr *nl_freqs, *nl_freq;
1244 struct nlattr *nl_cmds;
1245 enum ieee80211_band band;
1246 struct ieee80211_channel *chan;
1247 int i;
1248 const struct ieee80211_txrx_stypes *mgmt_stypes =
1249 rdev->wiphy.mgmt_stypes;
1250 u32 features;
1251
1252 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1253 if (!hdr)
1254 return -ENOBUFS;
1255
1256 if (WARN_ON(!state))
1257 return -EINVAL;
1258
1259 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1260 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1261 wiphy_name(&rdev->wiphy)) ||
1262 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1263 cfg80211_rdev_list_generation))
1264 goto nla_put_failure;
1265
1266 if (cmd != NL80211_CMD_NEW_WIPHY)
1267 goto finish;
1268
1269 switch (state->split_start) {
1270 case 0:
1271 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1272 rdev->wiphy.retry_short) ||
1273 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1274 rdev->wiphy.retry_long) ||
1275 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1276 rdev->wiphy.frag_threshold) ||
1277 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1278 rdev->wiphy.rts_threshold) ||
1279 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1280 rdev->wiphy.coverage_class) ||
1281 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1282 rdev->wiphy.max_scan_ssids) ||
1283 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1284 rdev->wiphy.max_sched_scan_ssids) ||
1285 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1286 rdev->wiphy.max_scan_ie_len) ||
1287 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1288 rdev->wiphy.max_sched_scan_ie_len) ||
1289 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1290 rdev->wiphy.max_match_sets))
1291 goto nla_put_failure;
1292
1293 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1294 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1295 goto nla_put_failure;
1296 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1297 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1298 goto nla_put_failure;
1299 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1300 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1301 goto nla_put_failure;
1302 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1303 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1304 goto nla_put_failure;
1305 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1306 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1307 goto nla_put_failure;
1308 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1309 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1310 goto nla_put_failure;
1311 state->split_start++;
1312 if (state->split)
1313 break;
1314 case 1:
1315 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1316 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1317 rdev->wiphy.cipher_suites))
1318 goto nla_put_failure;
1319
1320 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1321 rdev->wiphy.max_num_pmkids))
1322 goto nla_put_failure;
1323
1324 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1325 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1326 goto nla_put_failure;
1327
1328 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1329 rdev->wiphy.available_antennas_tx) ||
1330 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1331 rdev->wiphy.available_antennas_rx))
1332 goto nla_put_failure;
1333
1334 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1335 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1336 rdev->wiphy.probe_resp_offload))
1337 goto nla_put_failure;
1338
1339 if ((rdev->wiphy.available_antennas_tx ||
1340 rdev->wiphy.available_antennas_rx) &&
1341 rdev->ops->get_antenna) {
1342 u32 tx_ant = 0, rx_ant = 0;
1343 int res;
1344 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1345 if (!res) {
1346 if (nla_put_u32(msg,
1347 NL80211_ATTR_WIPHY_ANTENNA_TX,
1348 tx_ant) ||
1349 nla_put_u32(msg,
1350 NL80211_ATTR_WIPHY_ANTENNA_RX,
1351 rx_ant))
1352 goto nla_put_failure;
1353 }
1354 }
1355
1356 state->split_start++;
1357 if (state->split)
1358 break;
1359 case 2:
1360 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1361 rdev->wiphy.interface_modes))
1362 goto nla_put_failure;
1363 state->split_start++;
1364 if (state->split)
1365 break;
1366 case 3:
1367 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1368 if (!nl_bands)
1369 goto nla_put_failure;
1370
1371 for (band = state->band_start;
1372 band < IEEE80211_NUM_BANDS; band++) {
1373 struct ieee80211_supported_band *sband;
1374
1375 sband = rdev->wiphy.bands[band];
1376
1377 if (!sband)
1378 continue;
1379
1380 nl_band = nla_nest_start(msg, band);
1381 if (!nl_band)
1382 goto nla_put_failure;
1383
1384 switch (state->chan_start) {
1385 case 0:
1386 if (nl80211_send_band_rateinfo(msg, sband))
1387 goto nla_put_failure;
1388 state->chan_start++;
1389 if (state->split)
1390 break;
1391 default:
1392 /* add frequencies */
1393 nl_freqs = nla_nest_start(
1394 msg, NL80211_BAND_ATTR_FREQS);
1395 if (!nl_freqs)
1396 goto nla_put_failure;
1397
1398 for (i = state->chan_start - 1;
1399 i < sband->n_channels;
1400 i++) {
1401 nl_freq = nla_nest_start(msg, i);
1402 if (!nl_freq)
1403 goto nla_put_failure;
1404
1405 chan = &sband->channels[i];
1406
1407 if (nl80211_msg_put_channel(
1408 msg, chan,
1409 state->split))
1410 goto nla_put_failure;
1411
1412 nla_nest_end(msg, nl_freq);
1413 if (state->split)
1414 break;
1415 }
1416 if (i < sband->n_channels)
1417 state->chan_start = i + 2;
1418 else
1419 state->chan_start = 0;
1420 nla_nest_end(msg, nl_freqs);
1421 }
1422
1423 nla_nest_end(msg, nl_band);
1424
1425 if (state->split) {
1426 /* start again here */
1427 if (state->chan_start)
1428 band--;
1429 break;
1430 }
1431 }
1432 nla_nest_end(msg, nl_bands);
1433
1434 if (band < IEEE80211_NUM_BANDS)
1435 state->band_start = band + 1;
1436 else
1437 state->band_start = 0;
1438
1439 /* if bands & channels are done, continue outside */
1440 if (state->band_start == 0 && state->chan_start == 0)
1441 state->split_start++;
1442 if (state->split)
1443 break;
1444 case 4:
1445 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1446 if (!nl_cmds)
1447 goto nla_put_failure;
1448
1449 i = 0;
1450 #define CMD(op, n) \
1451 do { \
1452 if (rdev->ops->op) { \
1453 i++; \
1454 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1455 goto nla_put_failure; \
1456 } \
1457 } while (0)
1458
1459 CMD(add_virtual_intf, NEW_INTERFACE);
1460 CMD(change_virtual_intf, SET_INTERFACE);
1461 CMD(add_key, NEW_KEY);
1462 CMD(start_ap, START_AP);
1463 CMD(add_station, NEW_STATION);
1464 CMD(add_mpath, NEW_MPATH);
1465 CMD(update_mesh_config, SET_MESH_CONFIG);
1466 CMD(change_bss, SET_BSS);
1467 CMD(auth, AUTHENTICATE);
1468 CMD(assoc, ASSOCIATE);
1469 CMD(deauth, DEAUTHENTICATE);
1470 CMD(disassoc, DISASSOCIATE);
1471 CMD(join_ibss, JOIN_IBSS);
1472 CMD(join_mesh, JOIN_MESH);
1473 CMD(set_pmksa, SET_PMKSA);
1474 CMD(del_pmksa, DEL_PMKSA);
1475 CMD(flush_pmksa, FLUSH_PMKSA);
1476 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1477 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1478 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1479 CMD(mgmt_tx, FRAME);
1480 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1481 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1482 i++;
1483 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1484 goto nla_put_failure;
1485 }
1486 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1487 rdev->ops->join_mesh) {
1488 i++;
1489 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1490 goto nla_put_failure;
1491 }
1492 CMD(set_wds_peer, SET_WDS_PEER);
1493 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1494 CMD(tdls_mgmt, TDLS_MGMT);
1495 CMD(tdls_oper, TDLS_OPER);
1496 }
1497 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1498 CMD(sched_scan_start, START_SCHED_SCAN);
1499 CMD(probe_client, PROBE_CLIENT);
1500 CMD(set_noack_map, SET_NOACK_MAP);
1501 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1502 i++;
1503 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1504 goto nla_put_failure;
1505 }
1506 CMD(start_p2p_device, START_P2P_DEVICE);
1507 CMD(set_mcast_rate, SET_MCAST_RATE);
1508 #ifdef CONFIG_NL80211_TESTMODE
1509 CMD(testmode_cmd, TESTMODE);
1510 #endif
1511 if (state->split) {
1512 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1513 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1514 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1515 CMD(channel_switch, CHANNEL_SWITCH);
1516 CMD(set_qos_map, SET_QOS_MAP);
1517 if (rdev->wiphy.features &
1518 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1519 CMD(add_tx_ts, ADD_TX_TS);
1520 }
1521 /* add into the if now */
1522 #undef CMD
1523
1524 if (rdev->ops->connect || rdev->ops->auth) {
1525 i++;
1526 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1527 goto nla_put_failure;
1528 }
1529
1530 if (rdev->ops->disconnect || rdev->ops->deauth) {
1531 i++;
1532 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1533 goto nla_put_failure;
1534 }
1535
1536 nla_nest_end(msg, nl_cmds);
1537 state->split_start++;
1538 if (state->split)
1539 break;
1540 case 5:
1541 if (rdev->ops->remain_on_channel &&
1542 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1543 nla_put_u32(msg,
1544 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1545 rdev->wiphy.max_remain_on_channel_duration))
1546 goto nla_put_failure;
1547
1548 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1549 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1550 goto nla_put_failure;
1551
1552 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1553 goto nla_put_failure;
1554 state->split_start++;
1555 if (state->split)
1556 break;
1557 case 6:
1558 #ifdef CONFIG_PM
1559 if (nl80211_send_wowlan(msg, rdev, state->split))
1560 goto nla_put_failure;
1561 state->split_start++;
1562 if (state->split)
1563 break;
1564 #else
1565 state->split_start++;
1566 #endif
1567 case 7:
1568 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1569 rdev->wiphy.software_iftypes))
1570 goto nla_put_failure;
1571
1572 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1573 state->split))
1574 goto nla_put_failure;
1575
1576 state->split_start++;
1577 if (state->split)
1578 break;
1579 case 8:
1580 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1581 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1582 rdev->wiphy.ap_sme_capa))
1583 goto nla_put_failure;
1584
1585 features = rdev->wiphy.features;
1586 /*
1587 * We can only add the per-channel limit information if the
1588 * dump is split, otherwise it makes it too big. Therefore
1589 * only advertise it in that case.
1590 */
1591 if (state->split)
1592 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1593 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1594 goto nla_put_failure;
1595
1596 if (rdev->wiphy.ht_capa_mod_mask &&
1597 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1598 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1599 rdev->wiphy.ht_capa_mod_mask))
1600 goto nla_put_failure;
1601
1602 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1603 rdev->wiphy.max_acl_mac_addrs &&
1604 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1605 rdev->wiphy.max_acl_mac_addrs))
1606 goto nla_put_failure;
1607
1608 /*
1609 * Any information below this point is only available to
1610 * applications that can deal with it being split. This
1611 * helps ensure that newly added capabilities don't break
1612 * older tools by overrunning their buffers.
1613 *
1614 * We still increment split_start so that in the split
1615 * case we'll continue with more data in the next round,
1616 * but break unconditionally so unsplit data stops here.
1617 */
1618 state->split_start++;
1619 break;
1620 case 9:
1621 if (rdev->wiphy.extended_capabilities &&
1622 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1623 rdev->wiphy.extended_capabilities_len,
1624 rdev->wiphy.extended_capabilities) ||
1625 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1626 rdev->wiphy.extended_capabilities_len,
1627 rdev->wiphy.extended_capabilities_mask)))
1628 goto nla_put_failure;
1629
1630 if (rdev->wiphy.vht_capa_mod_mask &&
1631 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1632 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1633 rdev->wiphy.vht_capa_mod_mask))
1634 goto nla_put_failure;
1635
1636 state->split_start++;
1637 break;
1638 case 10:
1639 if (nl80211_send_coalesce(msg, rdev))
1640 goto nla_put_failure;
1641
1642 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1643 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1644 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1645 goto nla_put_failure;
1646
1647 if (rdev->wiphy.max_ap_assoc_sta &&
1648 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1649 rdev->wiphy.max_ap_assoc_sta))
1650 goto nla_put_failure;
1651
1652 state->split_start++;
1653 break;
1654 case 11:
1655 if (rdev->wiphy.n_vendor_commands) {
1656 const struct nl80211_vendor_cmd_info *info;
1657 struct nlattr *nested;
1658
1659 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1660 if (!nested)
1661 goto nla_put_failure;
1662
1663 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1664 info = &rdev->wiphy.vendor_commands[i].info;
1665 if (nla_put(msg, i + 1, sizeof(*info), info))
1666 goto nla_put_failure;
1667 }
1668 nla_nest_end(msg, nested);
1669 }
1670
1671 if (rdev->wiphy.n_vendor_events) {
1672 const struct nl80211_vendor_cmd_info *info;
1673 struct nlattr *nested;
1674
1675 nested = nla_nest_start(msg,
1676 NL80211_ATTR_VENDOR_EVENTS);
1677 if (!nested)
1678 goto nla_put_failure;
1679
1680 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1681 info = &rdev->wiphy.vendor_events[i];
1682 if (nla_put(msg, i + 1, sizeof(*info), info))
1683 goto nla_put_failure;
1684 }
1685 nla_nest_end(msg, nested);
1686 }
1687 state->split_start++;
1688 break;
1689 case 12:
1690 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1691 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1692 rdev->wiphy.max_num_csa_counters))
1693 goto nla_put_failure;
1694
1695 /* done */
1696 state->split_start = 0;
1697 break;
1698 }
1699 finish:
1700 return genlmsg_end(msg, hdr);
1701
1702 nla_put_failure:
1703 genlmsg_cancel(msg, hdr);
1704 return -EMSGSIZE;
1705 }
1706
1707 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1708 struct netlink_callback *cb,
1709 struct nl80211_dump_wiphy_state *state)
1710 {
1711 struct nlattr **tb = nl80211_fam.attrbuf;
1712 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1713 tb, nl80211_fam.maxattr, nl80211_policy);
1714 /* ignore parse errors for backward compatibility */
1715 if (ret)
1716 return 0;
1717
1718 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1719 if (tb[NL80211_ATTR_WIPHY])
1720 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1721 if (tb[NL80211_ATTR_WDEV])
1722 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1723 if (tb[NL80211_ATTR_IFINDEX]) {
1724 struct net_device *netdev;
1725 struct cfg80211_registered_device *rdev;
1726 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1727
1728 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1729 if (!netdev)
1730 return -ENODEV;
1731 if (netdev->ieee80211_ptr) {
1732 rdev = wiphy_to_rdev(
1733 netdev->ieee80211_ptr->wiphy);
1734 state->filter_wiphy = rdev->wiphy_idx;
1735 }
1736 }
1737
1738 return 0;
1739 }
1740
1741 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1742 {
1743 int idx = 0, ret;
1744 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1745 struct cfg80211_registered_device *rdev;
1746
1747 rtnl_lock();
1748 if (!state) {
1749 state = kzalloc(sizeof(*state), GFP_KERNEL);
1750 if (!state) {
1751 rtnl_unlock();
1752 return -ENOMEM;
1753 }
1754 state->filter_wiphy = -1;
1755 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1756 if (ret) {
1757 kfree(state);
1758 rtnl_unlock();
1759 return ret;
1760 }
1761 cb->args[0] = (long)state;
1762 }
1763
1764 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1765 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1766 continue;
1767 if (++idx <= state->start)
1768 continue;
1769 if (state->filter_wiphy != -1 &&
1770 state->filter_wiphy != rdev->wiphy_idx)
1771 continue;
1772 /* attempt to fit multiple wiphy data chunks into the skb */
1773 do {
1774 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1775 skb,
1776 NETLINK_CB(cb->skb).portid,
1777 cb->nlh->nlmsg_seq,
1778 NLM_F_MULTI, state);
1779 if (ret < 0) {
1780 /*
1781 * If sending the wiphy data didn't fit (ENOBUFS
1782 * or EMSGSIZE returned), this SKB is still
1783 * empty (so it's not too big because another
1784 * wiphy dataset is already in the skb) and
1785 * we've not tried to adjust the dump allocation
1786 * yet ... then adjust the alloc size to be
1787 * bigger, and return 1 but with the empty skb.
1788 * This results in an empty message being RX'ed
1789 * in userspace, but that is ignored.
1790 *
1791 * We can then retry with the larger buffer.
1792 */
1793 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1794 !skb->len && !state->split &&
1795 cb->min_dump_alloc < 4096) {
1796 cb->min_dump_alloc = 4096;
1797 state->split_start = 0;
1798 rtnl_unlock();
1799 return 1;
1800 }
1801 idx--;
1802 break;
1803 }
1804 } while (state->split_start > 0);
1805 break;
1806 }
1807 rtnl_unlock();
1808
1809 state->start = idx;
1810
1811 return skb->len;
1812 }
1813
1814 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1815 {
1816 kfree((void *)cb->args[0]);
1817 return 0;
1818 }
1819
1820 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1821 {
1822 struct sk_buff *msg;
1823 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1824 struct nl80211_dump_wiphy_state state = {};
1825
1826 msg = nlmsg_new(4096, GFP_KERNEL);
1827 if (!msg)
1828 return -ENOMEM;
1829
1830 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1831 info->snd_portid, info->snd_seq, 0,
1832 &state) < 0) {
1833 nlmsg_free(msg);
1834 return -ENOBUFS;
1835 }
1836
1837 return genlmsg_reply(msg, info);
1838 }
1839
1840 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1841 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1842 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1843 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1844 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1845 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1846 };
1847
1848 static int parse_txq_params(struct nlattr *tb[],
1849 struct ieee80211_txq_params *txq_params)
1850 {
1851 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1852 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1853 !tb[NL80211_TXQ_ATTR_AIFS])
1854 return -EINVAL;
1855
1856 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1857 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1858 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1859 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1860 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1861
1862 if (txq_params->ac >= NL80211_NUM_ACS)
1863 return -EINVAL;
1864
1865 return 0;
1866 }
1867
1868 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1869 {
1870 /*
1871 * You can only set the channel explicitly for WDS interfaces,
1872 * all others have their channel managed via their respective
1873 * "establish a connection" command (connect, join, ...)
1874 *
1875 * For AP/GO and mesh mode, the channel can be set with the
1876 * channel userspace API, but is only stored and passed to the
1877 * low-level driver when the AP starts or the mesh is joined.
1878 * This is for backward compatibility, userspace can also give
1879 * the channel in the start-ap or join-mesh commands instead.
1880 *
1881 * Monitors are special as they are normally slaved to
1882 * whatever else is going on, so they have their own special
1883 * operation to set the monitor channel if possible.
1884 */
1885 return !wdev ||
1886 wdev->iftype == NL80211_IFTYPE_AP ||
1887 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1888 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1889 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1890 }
1891
1892 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1893 struct genl_info *info,
1894 struct cfg80211_chan_def *chandef)
1895 {
1896 u32 control_freq;
1897
1898 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1899 return -EINVAL;
1900
1901 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1902
1903 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1904 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1905 chandef->center_freq1 = control_freq;
1906 chandef->center_freq2 = 0;
1907
1908 /* Primary channel not allowed */
1909 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1910 return -EINVAL;
1911
1912 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1913 enum nl80211_channel_type chantype;
1914
1915 chantype = nla_get_u32(
1916 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1917
1918 switch (chantype) {
1919 case NL80211_CHAN_NO_HT:
1920 case NL80211_CHAN_HT20:
1921 case NL80211_CHAN_HT40PLUS:
1922 case NL80211_CHAN_HT40MINUS:
1923 cfg80211_chandef_create(chandef, chandef->chan,
1924 chantype);
1925 break;
1926 default:
1927 return -EINVAL;
1928 }
1929 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1930 chandef->width =
1931 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1932 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1933 chandef->center_freq1 =
1934 nla_get_u32(
1935 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1936 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1937 chandef->center_freq2 =
1938 nla_get_u32(
1939 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1940 }
1941
1942 if (!cfg80211_chandef_valid(chandef))
1943 return -EINVAL;
1944
1945 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1946 IEEE80211_CHAN_DISABLED))
1947 return -EINVAL;
1948
1949 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1950 chandef->width == NL80211_CHAN_WIDTH_10) &&
1951 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1952 return -EINVAL;
1953
1954 return 0;
1955 }
1956
1957 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1958 struct net_device *dev,
1959 struct genl_info *info)
1960 {
1961 struct cfg80211_chan_def chandef;
1962 int result;
1963 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1964 struct wireless_dev *wdev = NULL;
1965
1966 if (dev)
1967 wdev = dev->ieee80211_ptr;
1968 if (!nl80211_can_set_dev_channel(wdev))
1969 return -EOPNOTSUPP;
1970 if (wdev)
1971 iftype = wdev->iftype;
1972
1973 result = nl80211_parse_chandef(rdev, info, &chandef);
1974 if (result)
1975 return result;
1976
1977 switch (iftype) {
1978 case NL80211_IFTYPE_AP:
1979 case NL80211_IFTYPE_P2P_GO:
1980 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1981 result = -EINVAL;
1982 break;
1983 }
1984 if (wdev->beacon_interval) {
1985 if (!dev || !rdev->ops->set_ap_chanwidth ||
1986 !(rdev->wiphy.features &
1987 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1988 result = -EBUSY;
1989 break;
1990 }
1991
1992 /* Only allow dynamic channel width changes */
1993 if (chandef.chan != wdev->preset_chandef.chan) {
1994 result = -EBUSY;
1995 break;
1996 }
1997 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
1998 if (result)
1999 break;
2000 }
2001 wdev->preset_chandef = chandef;
2002 result = 0;
2003 break;
2004 case NL80211_IFTYPE_MESH_POINT:
2005 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2006 break;
2007 case NL80211_IFTYPE_MONITOR:
2008 result = cfg80211_set_monitor_channel(rdev, &chandef);
2009 break;
2010 default:
2011 result = -EINVAL;
2012 }
2013
2014 return result;
2015 }
2016
2017 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2018 {
2019 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2020 struct net_device *netdev = info->user_ptr[1];
2021
2022 return __nl80211_set_channel(rdev, netdev, info);
2023 }
2024
2025 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2026 {
2027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2028 struct net_device *dev = info->user_ptr[1];
2029 struct wireless_dev *wdev = dev->ieee80211_ptr;
2030 const u8 *bssid;
2031
2032 if (!info->attrs[NL80211_ATTR_MAC])
2033 return -EINVAL;
2034
2035 if (netif_running(dev))
2036 return -EBUSY;
2037
2038 if (!rdev->ops->set_wds_peer)
2039 return -EOPNOTSUPP;
2040
2041 if (wdev->iftype != NL80211_IFTYPE_WDS)
2042 return -EOPNOTSUPP;
2043
2044 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2045 return rdev_set_wds_peer(rdev, dev, bssid);
2046 }
2047
2048
2049 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2050 {
2051 struct cfg80211_registered_device *rdev;
2052 struct net_device *netdev = NULL;
2053 struct wireless_dev *wdev;
2054 int result = 0, rem_txq_params = 0;
2055 struct nlattr *nl_txq_params;
2056 u32 changed;
2057 u8 retry_short = 0, retry_long = 0;
2058 u32 frag_threshold = 0, rts_threshold = 0;
2059 u8 coverage_class = 0;
2060
2061 ASSERT_RTNL();
2062
2063 /*
2064 * Try to find the wiphy and netdev. Normally this
2065 * function shouldn't need the netdev, but this is
2066 * done for backward compatibility -- previously
2067 * setting the channel was done per wiphy, but now
2068 * it is per netdev. Previous userland like hostapd
2069 * also passed a netdev to set_wiphy, so that it is
2070 * possible to let that go to the right netdev!
2071 */
2072
2073 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2074 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2075
2076 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2077 if (netdev && netdev->ieee80211_ptr)
2078 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2079 else
2080 netdev = NULL;
2081 }
2082
2083 if (!netdev) {
2084 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2085 info->attrs);
2086 if (IS_ERR(rdev))
2087 return PTR_ERR(rdev);
2088 wdev = NULL;
2089 netdev = NULL;
2090 result = 0;
2091 } else
2092 wdev = netdev->ieee80211_ptr;
2093
2094 /*
2095 * end workaround code, by now the rdev is available
2096 * and locked, and wdev may or may not be NULL.
2097 */
2098
2099 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2100 result = cfg80211_dev_rename(
2101 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2102
2103 if (result)
2104 return result;
2105
2106 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2107 struct ieee80211_txq_params txq_params;
2108 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2109
2110 if (!rdev->ops->set_txq_params)
2111 return -EOPNOTSUPP;
2112
2113 if (!netdev)
2114 return -EINVAL;
2115
2116 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2117 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2118 return -EINVAL;
2119
2120 if (!netif_running(netdev))
2121 return -ENETDOWN;
2122
2123 nla_for_each_nested(nl_txq_params,
2124 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2125 rem_txq_params) {
2126 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2127 nla_data(nl_txq_params),
2128 nla_len(nl_txq_params),
2129 txq_params_policy);
2130 if (result)
2131 return result;
2132 result = parse_txq_params(tb, &txq_params);
2133 if (result)
2134 return result;
2135
2136 result = rdev_set_txq_params(rdev, netdev,
2137 &txq_params);
2138 if (result)
2139 return result;
2140 }
2141 }
2142
2143 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2144 result = __nl80211_set_channel(
2145 rdev,
2146 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2147 info);
2148 if (result)
2149 return result;
2150 }
2151
2152 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2153 struct wireless_dev *txp_wdev = wdev;
2154 enum nl80211_tx_power_setting type;
2155 int idx, mbm = 0;
2156
2157 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2158 txp_wdev = NULL;
2159
2160 if (!rdev->ops->set_tx_power)
2161 return -EOPNOTSUPP;
2162
2163 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2164 type = nla_get_u32(info->attrs[idx]);
2165
2166 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2167 (type != NL80211_TX_POWER_AUTOMATIC))
2168 return -EINVAL;
2169
2170 if (type != NL80211_TX_POWER_AUTOMATIC) {
2171 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2172 mbm = nla_get_u32(info->attrs[idx]);
2173 }
2174
2175 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2176 if (result)
2177 return result;
2178 }
2179
2180 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2181 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2182 u32 tx_ant, rx_ant;
2183 if ((!rdev->wiphy.available_antennas_tx &&
2184 !rdev->wiphy.available_antennas_rx) ||
2185 !rdev->ops->set_antenna)
2186 return -EOPNOTSUPP;
2187
2188 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2189 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2190
2191 /* reject antenna configurations which don't match the
2192 * available antenna masks, except for the "all" mask */
2193 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2194 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2195 return -EINVAL;
2196
2197 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2198 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2199
2200 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2201 if (result)
2202 return result;
2203 }
2204
2205 changed = 0;
2206
2207 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2208 retry_short = nla_get_u8(
2209 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2210 if (retry_short == 0)
2211 return -EINVAL;
2212
2213 changed |= WIPHY_PARAM_RETRY_SHORT;
2214 }
2215
2216 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2217 retry_long = nla_get_u8(
2218 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2219 if (retry_long == 0)
2220 return -EINVAL;
2221
2222 changed |= WIPHY_PARAM_RETRY_LONG;
2223 }
2224
2225 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2226 frag_threshold = nla_get_u32(
2227 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2228 if (frag_threshold < 256)
2229 return -EINVAL;
2230
2231 if (frag_threshold != (u32) -1) {
2232 /*
2233 * Fragments (apart from the last one) are required to
2234 * have even length. Make the fragmentation code
2235 * simpler by stripping LSB should someone try to use
2236 * odd threshold value.
2237 */
2238 frag_threshold &= ~0x1;
2239 }
2240 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2241 }
2242
2243 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2244 rts_threshold = nla_get_u32(
2245 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2246 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2247 }
2248
2249 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2250 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2251 return -EINVAL;
2252
2253 coverage_class = nla_get_u8(
2254 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2255 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2256 }
2257
2258 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2259 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2260 return -EOPNOTSUPP;
2261
2262 changed |= WIPHY_PARAM_DYN_ACK;
2263 }
2264
2265 if (changed) {
2266 u8 old_retry_short, old_retry_long;
2267 u32 old_frag_threshold, old_rts_threshold;
2268 u8 old_coverage_class;
2269
2270 if (!rdev->ops->set_wiphy_params)
2271 return -EOPNOTSUPP;
2272
2273 old_retry_short = rdev->wiphy.retry_short;
2274 old_retry_long = rdev->wiphy.retry_long;
2275 old_frag_threshold = rdev->wiphy.frag_threshold;
2276 old_rts_threshold = rdev->wiphy.rts_threshold;
2277 old_coverage_class = rdev->wiphy.coverage_class;
2278
2279 if (changed & WIPHY_PARAM_RETRY_SHORT)
2280 rdev->wiphy.retry_short = retry_short;
2281 if (changed & WIPHY_PARAM_RETRY_LONG)
2282 rdev->wiphy.retry_long = retry_long;
2283 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2284 rdev->wiphy.frag_threshold = frag_threshold;
2285 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2286 rdev->wiphy.rts_threshold = rts_threshold;
2287 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2288 rdev->wiphy.coverage_class = coverage_class;
2289
2290 result = rdev_set_wiphy_params(rdev, changed);
2291 if (result) {
2292 rdev->wiphy.retry_short = old_retry_short;
2293 rdev->wiphy.retry_long = old_retry_long;
2294 rdev->wiphy.frag_threshold = old_frag_threshold;
2295 rdev->wiphy.rts_threshold = old_rts_threshold;
2296 rdev->wiphy.coverage_class = old_coverage_class;
2297 }
2298 }
2299 return 0;
2300 }
2301
2302 static inline u64 wdev_id(struct wireless_dev *wdev)
2303 {
2304 return (u64)wdev->identifier |
2305 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2306 }
2307
2308 static int nl80211_send_chandef(struct sk_buff *msg,
2309 const struct cfg80211_chan_def *chandef)
2310 {
2311 WARN_ON(!cfg80211_chandef_valid(chandef));
2312
2313 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2314 chandef->chan->center_freq))
2315 return -ENOBUFS;
2316 switch (chandef->width) {
2317 case NL80211_CHAN_WIDTH_20_NOHT:
2318 case NL80211_CHAN_WIDTH_20:
2319 case NL80211_CHAN_WIDTH_40:
2320 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2321 cfg80211_get_chandef_type(chandef)))
2322 return -ENOBUFS;
2323 break;
2324 default:
2325 break;
2326 }
2327 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2328 return -ENOBUFS;
2329 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2330 return -ENOBUFS;
2331 if (chandef->center_freq2 &&
2332 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2333 return -ENOBUFS;
2334 return 0;
2335 }
2336
2337 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2338 struct cfg80211_registered_device *rdev,
2339 struct wireless_dev *wdev)
2340 {
2341 struct net_device *dev = wdev->netdev;
2342 void *hdr;
2343
2344 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2345 if (!hdr)
2346 return -1;
2347
2348 if (dev &&
2349 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2350 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2351 goto nla_put_failure;
2352
2353 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2354 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2355 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2356 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2357 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2358 rdev->devlist_generation ^
2359 (cfg80211_rdev_list_generation << 2)))
2360 goto nla_put_failure;
2361
2362 if (rdev->ops->get_channel) {
2363 int ret;
2364 struct cfg80211_chan_def chandef;
2365
2366 ret = rdev_get_channel(rdev, wdev, &chandef);
2367 if (ret == 0) {
2368 if (nl80211_send_chandef(msg, &chandef))
2369 goto nla_put_failure;
2370 }
2371 }
2372
2373 if (wdev->ssid_len) {
2374 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2375 goto nla_put_failure;
2376 }
2377
2378 return genlmsg_end(msg, hdr);
2379
2380 nla_put_failure:
2381 genlmsg_cancel(msg, hdr);
2382 return -EMSGSIZE;
2383 }
2384
2385 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2386 {
2387 int wp_idx = 0;
2388 int if_idx = 0;
2389 int wp_start = cb->args[0];
2390 int if_start = cb->args[1];
2391 struct cfg80211_registered_device *rdev;
2392 struct wireless_dev *wdev;
2393
2394 rtnl_lock();
2395 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2396 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2397 continue;
2398 if (wp_idx < wp_start) {
2399 wp_idx++;
2400 continue;
2401 }
2402 if_idx = 0;
2403
2404 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2405 if (if_idx < if_start) {
2406 if_idx++;
2407 continue;
2408 }
2409 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2410 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2411 rdev, wdev) < 0) {
2412 goto out;
2413 }
2414 if_idx++;
2415 }
2416
2417 wp_idx++;
2418 }
2419 out:
2420 rtnl_unlock();
2421
2422 cb->args[0] = wp_idx;
2423 cb->args[1] = if_idx;
2424
2425 return skb->len;
2426 }
2427
2428 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2429 {
2430 struct sk_buff *msg;
2431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2432 struct wireless_dev *wdev = info->user_ptr[1];
2433
2434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2435 if (!msg)
2436 return -ENOMEM;
2437
2438 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2439 rdev, wdev) < 0) {
2440 nlmsg_free(msg);
2441 return -ENOBUFS;
2442 }
2443
2444 return genlmsg_reply(msg, info);
2445 }
2446
2447 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2448 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2449 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2450 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2451 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2452 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2453 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2454 };
2455
2456 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2457 {
2458 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2459 int flag;
2460
2461 *mntrflags = 0;
2462
2463 if (!nla)
2464 return -EINVAL;
2465
2466 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2467 nla, mntr_flags_policy))
2468 return -EINVAL;
2469
2470 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2471 if (flags[flag])
2472 *mntrflags |= (1<<flag);
2473
2474 return 0;
2475 }
2476
2477 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2478 struct net_device *netdev, u8 use_4addr,
2479 enum nl80211_iftype iftype)
2480 {
2481 if (!use_4addr) {
2482 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2483 return -EBUSY;
2484 return 0;
2485 }
2486
2487 switch (iftype) {
2488 case NL80211_IFTYPE_AP_VLAN:
2489 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2490 return 0;
2491 break;
2492 case NL80211_IFTYPE_STATION:
2493 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2494 return 0;
2495 break;
2496 default:
2497 break;
2498 }
2499
2500 return -EOPNOTSUPP;
2501 }
2502
2503 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2504 {
2505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2506 struct vif_params params;
2507 int err;
2508 enum nl80211_iftype otype, ntype;
2509 struct net_device *dev = info->user_ptr[1];
2510 u32 _flags, *flags = NULL;
2511 bool change = false;
2512
2513 memset(&params, 0, sizeof(params));
2514
2515 otype = ntype = dev->ieee80211_ptr->iftype;
2516
2517 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2518 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2519 if (otype != ntype)
2520 change = true;
2521 if (ntype > NL80211_IFTYPE_MAX)
2522 return -EINVAL;
2523 }
2524
2525 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2526 struct wireless_dev *wdev = dev->ieee80211_ptr;
2527
2528 if (ntype != NL80211_IFTYPE_MESH_POINT)
2529 return -EINVAL;
2530 if (netif_running(dev))
2531 return -EBUSY;
2532
2533 wdev_lock(wdev);
2534 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2535 IEEE80211_MAX_MESH_ID_LEN);
2536 wdev->mesh_id_up_len =
2537 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2538 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2539 wdev->mesh_id_up_len);
2540 wdev_unlock(wdev);
2541 }
2542
2543 if (info->attrs[NL80211_ATTR_4ADDR]) {
2544 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2545 change = true;
2546 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2547 if (err)
2548 return err;
2549 } else {
2550 params.use_4addr = -1;
2551 }
2552
2553 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2554 if (ntype != NL80211_IFTYPE_MONITOR)
2555 return -EINVAL;
2556 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2557 &_flags);
2558 if (err)
2559 return err;
2560
2561 flags = &_flags;
2562 change = true;
2563 }
2564
2565 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2566 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2567 return -EOPNOTSUPP;
2568
2569 if (change)
2570 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2571 else
2572 err = 0;
2573
2574 if (!err && params.use_4addr != -1)
2575 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2576
2577 return err;
2578 }
2579
2580 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2581 {
2582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2583 struct vif_params params;
2584 struct wireless_dev *wdev;
2585 struct sk_buff *msg;
2586 int err;
2587 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2588 u32 flags;
2589
2590 /* to avoid failing a new interface creation due to pending removal */
2591 cfg80211_destroy_ifaces(rdev);
2592
2593 memset(&params, 0, sizeof(params));
2594
2595 if (!info->attrs[NL80211_ATTR_IFNAME])
2596 return -EINVAL;
2597
2598 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2599 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2600 if (type > NL80211_IFTYPE_MAX)
2601 return -EINVAL;
2602 }
2603
2604 if (!rdev->ops->add_virtual_intf ||
2605 !(rdev->wiphy.interface_modes & (1 << type)))
2606 return -EOPNOTSUPP;
2607
2608 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2609 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2610 info->attrs[NL80211_ATTR_MAC]) {
2611 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2612 ETH_ALEN);
2613 if (!is_valid_ether_addr(params.macaddr))
2614 return -EADDRNOTAVAIL;
2615 }
2616
2617 if (info->attrs[NL80211_ATTR_4ADDR]) {
2618 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2619 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2620 if (err)
2621 return err;
2622 }
2623
2624 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2625 if (!msg)
2626 return -ENOMEM;
2627
2628 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2629 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2630 &flags);
2631
2632 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2633 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2634 return -EOPNOTSUPP;
2635
2636 wdev = rdev_add_virtual_intf(rdev,
2637 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2638 type, err ? NULL : &flags, &params);
2639 if (IS_ERR(wdev)) {
2640 nlmsg_free(msg);
2641 return PTR_ERR(wdev);
2642 }
2643
2644 if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2645 wdev->owner_nlportid = info->snd_portid;
2646
2647 switch (type) {
2648 case NL80211_IFTYPE_MESH_POINT:
2649 if (!info->attrs[NL80211_ATTR_MESH_ID])
2650 break;
2651 wdev_lock(wdev);
2652 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2653 IEEE80211_MAX_MESH_ID_LEN);
2654 wdev->mesh_id_up_len =
2655 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2656 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2657 wdev->mesh_id_up_len);
2658 wdev_unlock(wdev);
2659 break;
2660 case NL80211_IFTYPE_P2P_DEVICE:
2661 /*
2662 * P2P Device doesn't have a netdev, so doesn't go
2663 * through the netdev notifier and must be added here
2664 */
2665 mutex_init(&wdev->mtx);
2666 INIT_LIST_HEAD(&wdev->event_list);
2667 spin_lock_init(&wdev->event_lock);
2668 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2669 spin_lock_init(&wdev->mgmt_registrations_lock);
2670
2671 wdev->identifier = ++rdev->wdev_id;
2672 list_add_rcu(&wdev->list, &rdev->wdev_list);
2673 rdev->devlist_generation++;
2674 break;
2675 default:
2676 break;
2677 }
2678
2679 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2680 rdev, wdev) < 0) {
2681 nlmsg_free(msg);
2682 return -ENOBUFS;
2683 }
2684
2685 return genlmsg_reply(msg, info);
2686 }
2687
2688 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2689 {
2690 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2691 struct wireless_dev *wdev = info->user_ptr[1];
2692
2693 if (!rdev->ops->del_virtual_intf)
2694 return -EOPNOTSUPP;
2695
2696 /*
2697 * If we remove a wireless device without a netdev then clear
2698 * user_ptr[1] so that nl80211_post_doit won't dereference it
2699 * to check if it needs to do dev_put(). Otherwise it crashes
2700 * since the wdev has been freed, unlike with a netdev where
2701 * we need the dev_put() for the netdev to really be freed.
2702 */
2703 if (!wdev->netdev)
2704 info->user_ptr[1] = NULL;
2705
2706 return rdev_del_virtual_intf(rdev, wdev);
2707 }
2708
2709 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2710 {
2711 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2712 struct net_device *dev = info->user_ptr[1];
2713 u16 noack_map;
2714
2715 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2716 return -EINVAL;
2717
2718 if (!rdev->ops->set_noack_map)
2719 return -EOPNOTSUPP;
2720
2721 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2722
2723 return rdev_set_noack_map(rdev, dev, noack_map);
2724 }
2725
2726 struct get_key_cookie {
2727 struct sk_buff *msg;
2728 int error;
2729 int idx;
2730 };
2731
2732 static void get_key_callback(void *c, struct key_params *params)
2733 {
2734 struct nlattr *key;
2735 struct get_key_cookie *cookie = c;
2736
2737 if ((params->key &&
2738 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2739 params->key_len, params->key)) ||
2740 (params->seq &&
2741 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2742 params->seq_len, params->seq)) ||
2743 (params->cipher &&
2744 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2745 params->cipher)))
2746 goto nla_put_failure;
2747
2748 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2749 if (!key)
2750 goto nla_put_failure;
2751
2752 if ((params->key &&
2753 nla_put(cookie->msg, NL80211_KEY_DATA,
2754 params->key_len, params->key)) ||
2755 (params->seq &&
2756 nla_put(cookie->msg, NL80211_KEY_SEQ,
2757 params->seq_len, params->seq)) ||
2758 (params->cipher &&
2759 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2760 params->cipher)))
2761 goto nla_put_failure;
2762
2763 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2764 goto nla_put_failure;
2765
2766 nla_nest_end(cookie->msg, key);
2767
2768 return;
2769 nla_put_failure:
2770 cookie->error = 1;
2771 }
2772
2773 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2774 {
2775 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2776 int err;
2777 struct net_device *dev = info->user_ptr[1];
2778 u8 key_idx = 0;
2779 const u8 *mac_addr = NULL;
2780 bool pairwise;
2781 struct get_key_cookie cookie = {
2782 .error = 0,
2783 };
2784 void *hdr;
2785 struct sk_buff *msg;
2786
2787 if (info->attrs[NL80211_ATTR_KEY_IDX])
2788 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2789
2790 if (key_idx > 5)
2791 return -EINVAL;
2792
2793 if (info->attrs[NL80211_ATTR_MAC])
2794 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2795
2796 pairwise = !!mac_addr;
2797 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2798 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2799 if (kt >= NUM_NL80211_KEYTYPES)
2800 return -EINVAL;
2801 if (kt != NL80211_KEYTYPE_GROUP &&
2802 kt != NL80211_KEYTYPE_PAIRWISE)
2803 return -EINVAL;
2804 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2805 }
2806
2807 if (!rdev->ops->get_key)
2808 return -EOPNOTSUPP;
2809
2810 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2811 if (!msg)
2812 return -ENOMEM;
2813
2814 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2815 NL80211_CMD_NEW_KEY);
2816 if (!hdr)
2817 goto nla_put_failure;
2818
2819 cookie.msg = msg;
2820 cookie.idx = key_idx;
2821
2822 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2823 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2824 goto nla_put_failure;
2825 if (mac_addr &&
2826 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2827 goto nla_put_failure;
2828
2829 if (pairwise && mac_addr &&
2830 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2831 return -ENOENT;
2832
2833 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2834 get_key_callback);
2835
2836 if (err)
2837 goto free_msg;
2838
2839 if (cookie.error)
2840 goto nla_put_failure;
2841
2842 genlmsg_end(msg, hdr);
2843 return genlmsg_reply(msg, info);
2844
2845 nla_put_failure:
2846 err = -ENOBUFS;
2847 free_msg:
2848 nlmsg_free(msg);
2849 return err;
2850 }
2851
2852 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2853 {
2854 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2855 struct key_parse key;
2856 int err;
2857 struct net_device *dev = info->user_ptr[1];
2858
2859 err = nl80211_parse_key(info, &key);
2860 if (err)
2861 return err;
2862
2863 if (key.idx < 0)
2864 return -EINVAL;
2865
2866 /* only support setting default key */
2867 if (!key.def && !key.defmgmt)
2868 return -EINVAL;
2869
2870 wdev_lock(dev->ieee80211_ptr);
2871
2872 if (key.def) {
2873 if (!rdev->ops->set_default_key) {
2874 err = -EOPNOTSUPP;
2875 goto out;
2876 }
2877
2878 err = nl80211_key_allowed(dev->ieee80211_ptr);
2879 if (err)
2880 goto out;
2881
2882 err = rdev_set_default_key(rdev, dev, key.idx,
2883 key.def_uni, key.def_multi);
2884
2885 if (err)
2886 goto out;
2887
2888 #ifdef CONFIG_CFG80211_WEXT
2889 dev->ieee80211_ptr->wext.default_key = key.idx;
2890 #endif
2891 } else {
2892 if (key.def_uni || !key.def_multi) {
2893 err = -EINVAL;
2894 goto out;
2895 }
2896
2897 if (!rdev->ops->set_default_mgmt_key) {
2898 err = -EOPNOTSUPP;
2899 goto out;
2900 }
2901
2902 err = nl80211_key_allowed(dev->ieee80211_ptr);
2903 if (err)
2904 goto out;
2905
2906 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2907 if (err)
2908 goto out;
2909
2910 #ifdef CONFIG_CFG80211_WEXT
2911 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2912 #endif
2913 }
2914
2915 out:
2916 wdev_unlock(dev->ieee80211_ptr);
2917
2918 return err;
2919 }
2920
2921 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2922 {
2923 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2924 int err;
2925 struct net_device *dev = info->user_ptr[1];
2926 struct key_parse key;
2927 const u8 *mac_addr = NULL;
2928
2929 err = nl80211_parse_key(info, &key);
2930 if (err)
2931 return err;
2932
2933 if (!key.p.key)
2934 return -EINVAL;
2935
2936 if (info->attrs[NL80211_ATTR_MAC])
2937 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2938
2939 if (key.type == -1) {
2940 if (mac_addr)
2941 key.type = NL80211_KEYTYPE_PAIRWISE;
2942 else
2943 key.type = NL80211_KEYTYPE_GROUP;
2944 }
2945
2946 /* for now */
2947 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2948 key.type != NL80211_KEYTYPE_GROUP)
2949 return -EINVAL;
2950
2951 if (!rdev->ops->add_key)
2952 return -EOPNOTSUPP;
2953
2954 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2955 key.type == NL80211_KEYTYPE_PAIRWISE,
2956 mac_addr))
2957 return -EINVAL;
2958
2959 wdev_lock(dev->ieee80211_ptr);
2960 err = nl80211_key_allowed(dev->ieee80211_ptr);
2961 if (!err)
2962 err = rdev_add_key(rdev, dev, key.idx,
2963 key.type == NL80211_KEYTYPE_PAIRWISE,
2964 mac_addr, &key.p);
2965 wdev_unlock(dev->ieee80211_ptr);
2966
2967 return err;
2968 }
2969
2970 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2971 {
2972 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2973 int err;
2974 struct net_device *dev = info->user_ptr[1];
2975 u8 *mac_addr = NULL;
2976 struct key_parse key;
2977
2978 err = nl80211_parse_key(info, &key);
2979 if (err)
2980 return err;
2981
2982 if (info->attrs[NL80211_ATTR_MAC])
2983 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2984
2985 if (key.type == -1) {
2986 if (mac_addr)
2987 key.type = NL80211_KEYTYPE_PAIRWISE;
2988 else
2989 key.type = NL80211_KEYTYPE_GROUP;
2990 }
2991
2992 /* for now */
2993 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2994 key.type != NL80211_KEYTYPE_GROUP)
2995 return -EINVAL;
2996
2997 if (!rdev->ops->del_key)
2998 return -EOPNOTSUPP;
2999
3000 wdev_lock(dev->ieee80211_ptr);
3001 err = nl80211_key_allowed(dev->ieee80211_ptr);
3002
3003 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3004 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3005 err = -ENOENT;
3006
3007 if (!err)
3008 err = rdev_del_key(rdev, dev, key.idx,
3009 key.type == NL80211_KEYTYPE_PAIRWISE,
3010 mac_addr);
3011
3012 #ifdef CONFIG_CFG80211_WEXT
3013 if (!err) {
3014 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3015 dev->ieee80211_ptr->wext.default_key = -1;
3016 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3017 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3018 }
3019 #endif
3020 wdev_unlock(dev->ieee80211_ptr);
3021
3022 return err;
3023 }
3024
3025 /* This function returns an error or the number of nested attributes */
3026 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3027 {
3028 struct nlattr *attr;
3029 int n_entries = 0, tmp;
3030
3031 nla_for_each_nested(attr, nl_attr, tmp) {
3032 if (nla_len(attr) != ETH_ALEN)
3033 return -EINVAL;
3034
3035 n_entries++;
3036 }
3037
3038 return n_entries;
3039 }
3040
3041 /*
3042 * This function parses ACL information and allocates memory for ACL data.
3043 * On successful return, the calling function is responsible to free the
3044 * ACL buffer returned by this function.
3045 */
3046 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3047 struct genl_info *info)
3048 {
3049 enum nl80211_acl_policy acl_policy;
3050 struct nlattr *attr;
3051 struct cfg80211_acl_data *acl;
3052 int i = 0, n_entries, tmp;
3053
3054 if (!wiphy->max_acl_mac_addrs)
3055 return ERR_PTR(-EOPNOTSUPP);
3056
3057 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3058 return ERR_PTR(-EINVAL);
3059
3060 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3061 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3062 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3063 return ERR_PTR(-EINVAL);
3064
3065 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3066 return ERR_PTR(-EINVAL);
3067
3068 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3069 if (n_entries < 0)
3070 return ERR_PTR(n_entries);
3071
3072 if (n_entries > wiphy->max_acl_mac_addrs)
3073 return ERR_PTR(-ENOTSUPP);
3074
3075 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3076 GFP_KERNEL);
3077 if (!acl)
3078 return ERR_PTR(-ENOMEM);
3079
3080 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3081 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3082 i++;
3083 }
3084
3085 acl->n_acl_entries = n_entries;
3086 acl->acl_policy = acl_policy;
3087
3088 return acl;
3089 }
3090
3091 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3092 {
3093 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3094 struct net_device *dev = info->user_ptr[1];
3095 struct cfg80211_acl_data *acl;
3096 int err;
3097
3098 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3099 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3100 return -EOPNOTSUPP;
3101
3102 if (!dev->ieee80211_ptr->beacon_interval)
3103 return -EINVAL;
3104
3105 acl = parse_acl_data(&rdev->wiphy, info);
3106 if (IS_ERR(acl))
3107 return PTR_ERR(acl);
3108
3109 err = rdev_set_mac_acl(rdev, dev, acl);
3110
3111 kfree(acl);
3112
3113 return err;
3114 }
3115
3116 static int nl80211_parse_beacon(struct nlattr *attrs[],
3117 struct cfg80211_beacon_data *bcn)
3118 {
3119 bool haveinfo = false;
3120
3121 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3122 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3123 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3124 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3125 return -EINVAL;
3126
3127 memset(bcn, 0, sizeof(*bcn));
3128
3129 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3130 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3131 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3132 if (!bcn->head_len)
3133 return -EINVAL;
3134 haveinfo = true;
3135 }
3136
3137 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3138 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3139 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3140 haveinfo = true;
3141 }
3142
3143 if (!haveinfo)
3144 return -EINVAL;
3145
3146 if (attrs[NL80211_ATTR_IE]) {
3147 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3148 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3149 }
3150
3151 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3152 bcn->proberesp_ies =
3153 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3154 bcn->proberesp_ies_len =
3155 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3156 }
3157
3158 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3159 bcn->assocresp_ies =
3160 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3161 bcn->assocresp_ies_len =
3162 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3163 }
3164
3165 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3166 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3167 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3168 }
3169
3170 return 0;
3171 }
3172
3173 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3174 struct cfg80211_ap_settings *params)
3175 {
3176 struct wireless_dev *wdev;
3177 bool ret = false;
3178
3179 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3180 if (wdev->iftype != NL80211_IFTYPE_AP &&
3181 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3182 continue;
3183
3184 if (!wdev->preset_chandef.chan)
3185 continue;
3186
3187 params->chandef = wdev->preset_chandef;
3188 ret = true;
3189 break;
3190 }
3191
3192 return ret;
3193 }
3194
3195 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3196 enum nl80211_auth_type auth_type,
3197 enum nl80211_commands cmd)
3198 {
3199 if (auth_type > NL80211_AUTHTYPE_MAX)
3200 return false;
3201
3202 switch (cmd) {
3203 case NL80211_CMD_AUTHENTICATE:
3204 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3205 auth_type == NL80211_AUTHTYPE_SAE)
3206 return false;
3207 return true;
3208 case NL80211_CMD_CONNECT:
3209 case NL80211_CMD_START_AP:
3210 /* SAE not supported yet */
3211 if (auth_type == NL80211_AUTHTYPE_SAE)
3212 return false;
3213 return true;
3214 default:
3215 return false;
3216 }
3217 }
3218
3219 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3220 {
3221 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3222 struct net_device *dev = info->user_ptr[1];
3223 struct wireless_dev *wdev = dev->ieee80211_ptr;
3224 struct cfg80211_ap_settings params;
3225 int err;
3226
3227 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3228 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3229 return -EOPNOTSUPP;
3230
3231 if (!rdev->ops->start_ap)
3232 return -EOPNOTSUPP;
3233
3234 if (wdev->beacon_interval)
3235 return -EALREADY;
3236
3237 memset(&params, 0, sizeof(params));
3238
3239 /* these are required for START_AP */
3240 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3241 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3242 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3243 return -EINVAL;
3244
3245 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3246 if (err)
3247 return err;
3248
3249 params.beacon_interval =
3250 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3251 params.dtim_period =
3252 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3253
3254 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3255 if (err)
3256 return err;
3257
3258 /*
3259 * In theory, some of these attributes should be required here
3260 * but since they were not used when the command was originally
3261 * added, keep them optional for old user space programs to let
3262 * them continue to work with drivers that do not need the
3263 * additional information -- drivers must check!
3264 */
3265 if (info->attrs[NL80211_ATTR_SSID]) {
3266 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3267 params.ssid_len =
3268 nla_len(info->attrs[NL80211_ATTR_SSID]);
3269 if (params.ssid_len == 0 ||
3270 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3271 return -EINVAL;
3272 }
3273
3274 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3275 params.hidden_ssid = nla_get_u32(
3276 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3277 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3278 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3279 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3280 return -EINVAL;
3281 }
3282
3283 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3284
3285 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3286 params.auth_type = nla_get_u32(
3287 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3288 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3289 NL80211_CMD_START_AP))
3290 return -EINVAL;
3291 } else
3292 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3293
3294 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3295 NL80211_MAX_NR_CIPHER_SUITES);
3296 if (err)
3297 return err;
3298
3299 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3300 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3301 return -EOPNOTSUPP;
3302 params.inactivity_timeout = nla_get_u16(
3303 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3304 }
3305
3306 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3307 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3308 return -EINVAL;
3309 params.p2p_ctwindow =
3310 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3311 if (params.p2p_ctwindow > 127)
3312 return -EINVAL;
3313 if (params.p2p_ctwindow != 0 &&
3314 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3315 return -EINVAL;
3316 }
3317
3318 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3319 u8 tmp;
3320
3321 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3322 return -EINVAL;
3323 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3324 if (tmp > 1)
3325 return -EINVAL;
3326 params.p2p_opp_ps = tmp;
3327 if (params.p2p_opp_ps != 0 &&
3328 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3329 return -EINVAL;
3330 }
3331
3332 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3333 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3334 if (err)
3335 return err;
3336 } else if (wdev->preset_chandef.chan) {
3337 params.chandef = wdev->preset_chandef;
3338 } else if (!nl80211_get_ap_channel(rdev, &params))
3339 return -EINVAL;
3340
3341 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3342 wdev->iftype))
3343 return -EINVAL;
3344
3345 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3346 params.acl = parse_acl_data(&rdev->wiphy, info);
3347 if (IS_ERR(params.acl))
3348 return PTR_ERR(params.acl);
3349 }
3350
3351 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3352 params.smps_mode =
3353 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3354 switch (params.smps_mode) {
3355 case NL80211_SMPS_OFF:
3356 break;
3357 case NL80211_SMPS_STATIC:
3358 if (!(rdev->wiphy.features &
3359 NL80211_FEATURE_STATIC_SMPS))
3360 return -EINVAL;
3361 break;
3362 case NL80211_SMPS_DYNAMIC:
3363 if (!(rdev->wiphy.features &
3364 NL80211_FEATURE_DYNAMIC_SMPS))
3365 return -EINVAL;
3366 break;
3367 default:
3368 return -EINVAL;
3369 }
3370 } else {
3371 params.smps_mode = NL80211_SMPS_OFF;
3372 }
3373
3374 wdev_lock(wdev);
3375 err = rdev_start_ap(rdev, dev, &params);
3376 if (!err) {
3377 wdev->preset_chandef = params.chandef;
3378 wdev->beacon_interval = params.beacon_interval;
3379 wdev->chandef = params.chandef;
3380 wdev->ssid_len = params.ssid_len;
3381 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3382 }
3383 wdev_unlock(wdev);
3384
3385 kfree(params.acl);
3386
3387 return err;
3388 }
3389
3390 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3391 {
3392 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3393 struct net_device *dev = info->user_ptr[1];
3394 struct wireless_dev *wdev = dev->ieee80211_ptr;
3395 struct cfg80211_beacon_data params;
3396 int err;
3397
3398 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3399 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3400 return -EOPNOTSUPP;
3401
3402 if (!rdev->ops->change_beacon)
3403 return -EOPNOTSUPP;
3404
3405 if (!wdev->beacon_interval)
3406 return -EINVAL;
3407
3408 err = nl80211_parse_beacon(info->attrs, &params);
3409 if (err)
3410 return err;
3411
3412 wdev_lock(wdev);
3413 err = rdev_change_beacon(rdev, dev, &params);
3414 wdev_unlock(wdev);
3415
3416 return err;
3417 }
3418
3419 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3420 {
3421 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3422 struct net_device *dev = info->user_ptr[1];
3423
3424 return cfg80211_stop_ap(rdev, dev, false);
3425 }
3426
3427 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3428 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3429 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3430 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3431 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3432 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3433 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3434 };
3435
3436 static int parse_station_flags(struct genl_info *info,
3437 enum nl80211_iftype iftype,
3438 struct station_parameters *params)
3439 {
3440 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3441 struct nlattr *nla;
3442 int flag;
3443
3444 /*
3445 * Try parsing the new attribute first so userspace
3446 * can specify both for older kernels.
3447 */
3448 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3449 if (nla) {
3450 struct nl80211_sta_flag_update *sta_flags;
3451
3452 sta_flags = nla_data(nla);
3453 params->sta_flags_mask = sta_flags->mask;
3454 params->sta_flags_set = sta_flags->set;
3455 params->sta_flags_set &= params->sta_flags_mask;
3456 if ((params->sta_flags_mask |
3457 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3458 return -EINVAL;
3459 return 0;
3460 }
3461
3462 /* if present, parse the old attribute */
3463
3464 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3465 if (!nla)
3466 return 0;
3467
3468 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3469 nla, sta_flags_policy))
3470 return -EINVAL;
3471
3472 /*
3473 * Only allow certain flags for interface types so that
3474 * other attributes are silently ignored. Remember that
3475 * this is backward compatibility code with old userspace
3476 * and shouldn't be hit in other cases anyway.
3477 */
3478 switch (iftype) {
3479 case NL80211_IFTYPE_AP:
3480 case NL80211_IFTYPE_AP_VLAN:
3481 case NL80211_IFTYPE_P2P_GO:
3482 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3483 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3484 BIT(NL80211_STA_FLAG_WME) |
3485 BIT(NL80211_STA_FLAG_MFP);
3486 break;
3487 case NL80211_IFTYPE_P2P_CLIENT:
3488 case NL80211_IFTYPE_STATION:
3489 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3490 BIT(NL80211_STA_FLAG_TDLS_PEER);
3491 break;
3492 case NL80211_IFTYPE_MESH_POINT:
3493 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3494 BIT(NL80211_STA_FLAG_MFP) |
3495 BIT(NL80211_STA_FLAG_AUTHORIZED);
3496 default:
3497 return -EINVAL;
3498 }
3499
3500 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3501 if (flags[flag]) {
3502 params->sta_flags_set |= (1<<flag);
3503
3504 /* no longer support new API additions in old API */
3505 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3506 return -EINVAL;
3507 }
3508 }
3509
3510 return 0;
3511 }
3512
3513 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3514 int attr)
3515 {
3516 struct nlattr *rate;
3517 u32 bitrate;
3518 u16 bitrate_compat;
3519
3520 rate = nla_nest_start(msg, attr);
3521 if (!rate)
3522 return false;
3523
3524 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3525 bitrate = cfg80211_calculate_bitrate(info);
3526 /* report 16-bit bitrate only if we can */
3527 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3528 if (bitrate > 0 &&
3529 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3530 return false;
3531 if (bitrate_compat > 0 &&
3532 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3533 return false;
3534
3535 if (info->flags & RATE_INFO_FLAGS_MCS) {
3536 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3537 return false;
3538 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3539 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3540 return false;
3541 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3542 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3543 return false;
3544 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3545 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3546 return false;
3547 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3548 return false;
3549 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3550 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3551 return false;
3552 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3553 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3554 return false;
3555 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3556 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3557 return false;
3558 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3559 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3560 return false;
3561 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3562 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3563 return false;
3564 }
3565
3566 nla_nest_end(msg, rate);
3567 return true;
3568 }
3569
3570 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3571 int id)
3572 {
3573 void *attr;
3574 int i = 0;
3575
3576 if (!mask)
3577 return true;
3578
3579 attr = nla_nest_start(msg, id);
3580 if (!attr)
3581 return false;
3582
3583 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3584 if (!(mask & BIT(i)))
3585 continue;
3586
3587 if (nla_put_u8(msg, i, signal[i]))
3588 return false;
3589 }
3590
3591 nla_nest_end(msg, attr);
3592
3593 return true;
3594 }
3595
3596 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3597 int flags,
3598 struct cfg80211_registered_device *rdev,
3599 struct net_device *dev,
3600 const u8 *mac_addr, struct station_info *sinfo)
3601 {
3602 void *hdr;
3603 struct nlattr *sinfoattr, *bss_param;
3604
3605 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3606 if (!hdr)
3607 return -1;
3608
3609 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3610 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3611 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3612 goto nla_put_failure;
3613
3614 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3615 if (!sinfoattr)
3616 goto nla_put_failure;
3617 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3618 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3619 sinfo->connected_time))
3620 goto nla_put_failure;
3621 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3622 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3623 sinfo->inactive_time))
3624 goto nla_put_failure;
3625 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3626 STATION_INFO_RX_BYTES64)) &&
3627 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3628 (u32)sinfo->rx_bytes))
3629 goto nla_put_failure;
3630 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3631 STATION_INFO_TX_BYTES64)) &&
3632 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3633 (u32)sinfo->tx_bytes))
3634 goto nla_put_failure;
3635 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3636 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3637 sinfo->rx_bytes))
3638 goto nla_put_failure;
3639 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3640 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3641 sinfo->tx_bytes))
3642 goto nla_put_failure;
3643 if ((sinfo->filled & STATION_INFO_LLID) &&
3644 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3645 goto nla_put_failure;
3646 if ((sinfo->filled & STATION_INFO_PLID) &&
3647 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3648 goto nla_put_failure;
3649 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3650 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3651 sinfo->plink_state))
3652 goto nla_put_failure;
3653 switch (rdev->wiphy.signal_type) {
3654 case CFG80211_SIGNAL_TYPE_MBM:
3655 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3656 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3657 sinfo->signal))
3658 goto nla_put_failure;
3659 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3660 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3661 sinfo->signal_avg))
3662 goto nla_put_failure;
3663 break;
3664 default:
3665 break;
3666 }
3667 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3668 if (!nl80211_put_signal(msg, sinfo->chains,
3669 sinfo->chain_signal,
3670 NL80211_STA_INFO_CHAIN_SIGNAL))
3671 goto nla_put_failure;
3672 }
3673 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3674 if (!nl80211_put_signal(msg, sinfo->chains,
3675 sinfo->chain_signal_avg,
3676 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3677 goto nla_put_failure;
3678 }
3679 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3680 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3681 NL80211_STA_INFO_TX_BITRATE))
3682 goto nla_put_failure;
3683 }
3684 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3685 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3686 NL80211_STA_INFO_RX_BITRATE))
3687 goto nla_put_failure;
3688 }
3689 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3690 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3691 sinfo->rx_packets))
3692 goto nla_put_failure;
3693 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3694 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3695 sinfo->tx_packets))
3696 goto nla_put_failure;
3697 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3698 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3699 sinfo->tx_retries))
3700 goto nla_put_failure;
3701 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3702 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3703 sinfo->tx_failed))
3704 goto nla_put_failure;
3705 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3706 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3707 sinfo->expected_throughput))
3708 goto nla_put_failure;
3709 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3710 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3711 sinfo->beacon_loss_count))
3712 goto nla_put_failure;
3713 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3714 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3715 sinfo->local_pm))
3716 goto nla_put_failure;
3717 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3718 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3719 sinfo->peer_pm))
3720 goto nla_put_failure;
3721 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3722 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3723 sinfo->nonpeer_pm))
3724 goto nla_put_failure;
3725 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3726 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3727 if (!bss_param)
3728 goto nla_put_failure;
3729
3730 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3731 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3732 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3733 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3734 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3735 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3736 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3737 sinfo->bss_param.dtim_period) ||
3738 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3739 sinfo->bss_param.beacon_interval))
3740 goto nla_put_failure;
3741
3742 nla_nest_end(msg, bss_param);
3743 }
3744 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3745 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3746 sizeof(struct nl80211_sta_flag_update),
3747 &sinfo->sta_flags))
3748 goto nla_put_failure;
3749 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3750 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3751 sinfo->t_offset))
3752 goto nla_put_failure;
3753 nla_nest_end(msg, sinfoattr);
3754
3755 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3756 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3757 sinfo->assoc_req_ies))
3758 goto nla_put_failure;
3759
3760 return genlmsg_end(msg, hdr);
3761
3762 nla_put_failure:
3763 genlmsg_cancel(msg, hdr);
3764 return -EMSGSIZE;
3765 }
3766
3767 static int nl80211_dump_station(struct sk_buff *skb,
3768 struct netlink_callback *cb)
3769 {
3770 struct station_info sinfo;
3771 struct cfg80211_registered_device *rdev;
3772 struct wireless_dev *wdev;
3773 u8 mac_addr[ETH_ALEN];
3774 int sta_idx = cb->args[2];
3775 int err;
3776
3777 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3778 if (err)
3779 return err;
3780
3781 if (!wdev->netdev) {
3782 err = -EINVAL;
3783 goto out_err;
3784 }
3785
3786 if (!rdev->ops->dump_station) {
3787 err = -EOPNOTSUPP;
3788 goto out_err;
3789 }
3790
3791 while (1) {
3792 memset(&sinfo, 0, sizeof(sinfo));
3793 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3794 mac_addr, &sinfo);
3795 if (err == -ENOENT)
3796 break;
3797 if (err)
3798 goto out_err;
3799
3800 if (nl80211_send_station(skb,
3801 NETLINK_CB(cb->skb).portid,
3802 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3803 rdev, wdev->netdev, mac_addr,
3804 &sinfo) < 0)
3805 goto out;
3806
3807 sta_idx++;
3808 }
3809
3810
3811 out:
3812 cb->args[2] = sta_idx;
3813 err = skb->len;
3814 out_err:
3815 nl80211_finish_wdev_dump(rdev);
3816
3817 return err;
3818 }
3819
3820 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3821 {
3822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3823 struct net_device *dev = info->user_ptr[1];
3824 struct station_info sinfo;
3825 struct sk_buff *msg;
3826 u8 *mac_addr = NULL;
3827 int err;
3828
3829 memset(&sinfo, 0, sizeof(sinfo));
3830
3831 if (!info->attrs[NL80211_ATTR_MAC])
3832 return -EINVAL;
3833
3834 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3835
3836 if (!rdev->ops->get_station)
3837 return -EOPNOTSUPP;
3838
3839 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3840 if (err)
3841 return err;
3842
3843 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3844 if (!msg)
3845 return -ENOMEM;
3846
3847 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3848 rdev, dev, mac_addr, &sinfo) < 0) {
3849 nlmsg_free(msg);
3850 return -ENOBUFS;
3851 }
3852
3853 return genlmsg_reply(msg, info);
3854 }
3855
3856 int cfg80211_check_station_change(struct wiphy *wiphy,
3857 struct station_parameters *params,
3858 enum cfg80211_station_type statype)
3859 {
3860 if (params->listen_interval != -1)
3861 return -EINVAL;
3862 if (params->aid &&
3863 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3864 return -EINVAL;
3865
3866 /* When you run into this, adjust the code below for the new flag */
3867 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3868
3869 switch (statype) {
3870 case CFG80211_STA_MESH_PEER_KERNEL:
3871 case CFG80211_STA_MESH_PEER_USER:
3872 /*
3873 * No ignoring the TDLS flag here -- the userspace mesh
3874 * code doesn't have the bug of including TDLS in the
3875 * mask everywhere.
3876 */
3877 if (params->sta_flags_mask &
3878 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3879 BIT(NL80211_STA_FLAG_MFP) |
3880 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3881 return -EINVAL;
3882 break;
3883 case CFG80211_STA_TDLS_PEER_SETUP:
3884 case CFG80211_STA_TDLS_PEER_ACTIVE:
3885 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3886 return -EINVAL;
3887 /* ignore since it can't change */
3888 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3889 break;
3890 default:
3891 /* disallow mesh-specific things */
3892 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3893 return -EINVAL;
3894 if (params->local_pm)
3895 return -EINVAL;
3896 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3897 return -EINVAL;
3898 }
3899
3900 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3901 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3902 /* TDLS can't be set, ... */
3903 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3904 return -EINVAL;
3905 /*
3906 * ... but don't bother the driver with it. This works around
3907 * a hostapd/wpa_supplicant issue -- it always includes the
3908 * TLDS_PEER flag in the mask even for AP mode.
3909 */
3910 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3911 }
3912
3913 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3914 /* reject other things that can't change */
3915 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3916 return -EINVAL;
3917 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3918 return -EINVAL;
3919 if (params->supported_rates)
3920 return -EINVAL;
3921 if (params->ext_capab || params->ht_capa || params->vht_capa)
3922 return -EINVAL;
3923 }
3924
3925 if (statype != CFG80211_STA_AP_CLIENT) {
3926 if (params->vlan)
3927 return -EINVAL;
3928 }
3929
3930 switch (statype) {
3931 case CFG80211_STA_AP_MLME_CLIENT:
3932 /* Use this only for authorizing/unauthorizing a station */
3933 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3934 return -EOPNOTSUPP;
3935 break;
3936 case CFG80211_STA_AP_CLIENT:
3937 /* accept only the listed bits */
3938 if (params->sta_flags_mask &
3939 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3940 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3941 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3942 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3943 BIT(NL80211_STA_FLAG_WME) |
3944 BIT(NL80211_STA_FLAG_MFP)))
3945 return -EINVAL;
3946
3947 /* but authenticated/associated only if driver handles it */
3948 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3949 params->sta_flags_mask &
3950 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3951 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3952 return -EINVAL;
3953 break;
3954 case CFG80211_STA_IBSS:
3955 case CFG80211_STA_AP_STA:
3956 /* reject any changes other than AUTHORIZED */
3957 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3958 return -EINVAL;
3959 break;
3960 case CFG80211_STA_TDLS_PEER_SETUP:
3961 /* reject any changes other than AUTHORIZED or WME */
3962 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3963 BIT(NL80211_STA_FLAG_WME)))
3964 return -EINVAL;
3965 /* force (at least) rates when authorizing */
3966 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3967 !params->supported_rates)
3968 return -EINVAL;
3969 break;
3970 case CFG80211_STA_TDLS_PEER_ACTIVE:
3971 /* reject any changes */
3972 return -EINVAL;
3973 case CFG80211_STA_MESH_PEER_KERNEL:
3974 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3975 return -EINVAL;
3976 break;
3977 case CFG80211_STA_MESH_PEER_USER:
3978 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3979 return -EINVAL;
3980 break;
3981 }
3982
3983 return 0;
3984 }
3985 EXPORT_SYMBOL(cfg80211_check_station_change);
3986
3987 /*
3988 * Get vlan interface making sure it is running and on the right wiphy.
3989 */
3990 static struct net_device *get_vlan(struct genl_info *info,
3991 struct cfg80211_registered_device *rdev)
3992 {
3993 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3994 struct net_device *v;
3995 int ret;
3996
3997 if (!vlanattr)
3998 return NULL;
3999
4000 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4001 if (!v)
4002 return ERR_PTR(-ENODEV);
4003
4004 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4005 ret = -EINVAL;
4006 goto error;
4007 }
4008
4009 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4010 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4011 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4012 ret = -EINVAL;
4013 goto error;
4014 }
4015
4016 if (!netif_running(v)) {
4017 ret = -ENETDOWN;
4018 goto error;
4019 }
4020
4021 return v;
4022 error:
4023 dev_put(v);
4024 return ERR_PTR(ret);
4025 }
4026
4027 static const struct nla_policy
4028 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4029 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4030 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4031 };
4032
4033 static int nl80211_parse_sta_wme(struct genl_info *info,
4034 struct station_parameters *params)
4035 {
4036 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4037 struct nlattr *nla;
4038 int err;
4039
4040 /* parse WME attributes if present */
4041 if (!info->attrs[NL80211_ATTR_STA_WME])
4042 return 0;
4043
4044 nla = info->attrs[NL80211_ATTR_STA_WME];
4045 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4046 nl80211_sta_wme_policy);
4047 if (err)
4048 return err;
4049
4050 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4051 params->uapsd_queues = nla_get_u8(
4052 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4053 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4054 return -EINVAL;
4055
4056 if (tb[NL80211_STA_WME_MAX_SP])
4057 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4058
4059 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4060 return -EINVAL;
4061
4062 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4063
4064 return 0;
4065 }
4066
4067 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4068 struct station_parameters *params)
4069 {
4070 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4071 params->supported_channels =
4072 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4073 params->supported_channels_len =
4074 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4075 /*
4076 * Need to include at least one (first channel, number of
4077 * channels) tuple for each subband, and must have proper
4078 * tuples for the rest of the data as well.
4079 */
4080 if (params->supported_channels_len < 2)
4081 return -EINVAL;
4082 if (params->supported_channels_len % 2)
4083 return -EINVAL;
4084 }
4085
4086 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4087 params->supported_oper_classes =
4088 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4089 params->supported_oper_classes_len =
4090 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4091 /*
4092 * The value of the Length field of the Supported Operating
4093 * Classes element is between 2 and 253.
4094 */
4095 if (params->supported_oper_classes_len < 2 ||
4096 params->supported_oper_classes_len > 253)
4097 return -EINVAL;
4098 }
4099 return 0;
4100 }
4101
4102 static int nl80211_set_station_tdls(struct genl_info *info,
4103 struct station_parameters *params)
4104 {
4105 int err;
4106 /* Dummy STA entry gets updated once the peer capabilities are known */
4107 if (info->attrs[NL80211_ATTR_PEER_AID])
4108 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4109 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4110 params->ht_capa =
4111 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4112 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4113 params->vht_capa =
4114 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4115
4116 err = nl80211_parse_sta_channel_info(info, params);
4117 if (err)
4118 return err;
4119
4120 return nl80211_parse_sta_wme(info, params);
4121 }
4122
4123 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4124 {
4125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4126 struct net_device *dev = info->user_ptr[1];
4127 struct station_parameters params;
4128 u8 *mac_addr;
4129 int err;
4130
4131 memset(&params, 0, sizeof(params));
4132
4133 params.listen_interval = -1;
4134
4135 if (!rdev->ops->change_station)
4136 return -EOPNOTSUPP;
4137
4138 if (info->attrs[NL80211_ATTR_STA_AID])
4139 return -EINVAL;
4140
4141 if (!info->attrs[NL80211_ATTR_MAC])
4142 return -EINVAL;
4143
4144 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4145
4146 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4147 params.supported_rates =
4148 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4149 params.supported_rates_len =
4150 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4151 }
4152
4153 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4154 params.capability =
4155 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4156 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4157 }
4158
4159 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4160 params.ext_capab =
4161 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4162 params.ext_capab_len =
4163 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4164 }
4165
4166 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4167 return -EINVAL;
4168
4169 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4170 return -EINVAL;
4171
4172 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4173 params.plink_action =
4174 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4175 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4176 return -EINVAL;
4177 }
4178
4179 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4180 params.plink_state =
4181 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4182 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4183 return -EINVAL;
4184 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4185 }
4186
4187 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4188 enum nl80211_mesh_power_mode pm = nla_get_u32(
4189 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4190
4191 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4192 pm > NL80211_MESH_POWER_MAX)
4193 return -EINVAL;
4194
4195 params.local_pm = pm;
4196 }
4197
4198 /* Include parameters for TDLS peer (will check later) */
4199 err = nl80211_set_station_tdls(info, &params);
4200 if (err)
4201 return err;
4202
4203 params.vlan = get_vlan(info, rdev);
4204 if (IS_ERR(params.vlan))
4205 return PTR_ERR(params.vlan);
4206
4207 switch (dev->ieee80211_ptr->iftype) {
4208 case NL80211_IFTYPE_AP:
4209 case NL80211_IFTYPE_AP_VLAN:
4210 case NL80211_IFTYPE_P2P_GO:
4211 case NL80211_IFTYPE_P2P_CLIENT:
4212 case NL80211_IFTYPE_STATION:
4213 case NL80211_IFTYPE_ADHOC:
4214 case NL80211_IFTYPE_MESH_POINT:
4215 break;
4216 default:
4217 err = -EOPNOTSUPP;
4218 goto out_put_vlan;
4219 }
4220
4221 /* driver will call cfg80211_check_station_change() */
4222 err = rdev_change_station(rdev, dev, mac_addr, &params);
4223
4224 out_put_vlan:
4225 if (params.vlan)
4226 dev_put(params.vlan);
4227
4228 return err;
4229 }
4230
4231 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4232 {
4233 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4234 int err;
4235 struct net_device *dev = info->user_ptr[1];
4236 struct station_parameters params;
4237 u8 *mac_addr = NULL;
4238
4239 memset(&params, 0, sizeof(params));
4240
4241 if (!rdev->ops->add_station)
4242 return -EOPNOTSUPP;
4243
4244 if (!info->attrs[NL80211_ATTR_MAC])
4245 return -EINVAL;
4246
4247 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4248 return -EINVAL;
4249
4250 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4251 return -EINVAL;
4252
4253 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4254 !info->attrs[NL80211_ATTR_PEER_AID])
4255 return -EINVAL;
4256
4257 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4258 params.supported_rates =
4259 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4260 params.supported_rates_len =
4261 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4262 params.listen_interval =
4263 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4264
4265 if (info->attrs[NL80211_ATTR_PEER_AID])
4266 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4267 else
4268 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4269 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4270 return -EINVAL;
4271
4272 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4273 params.capability =
4274 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4275 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4276 }
4277
4278 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4279 params.ext_capab =
4280 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4281 params.ext_capab_len =
4282 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4283 }
4284
4285 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4286 params.ht_capa =
4287 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4288
4289 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4290 params.vht_capa =
4291 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4292
4293 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4294 params.opmode_notif_used = true;
4295 params.opmode_notif =
4296 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4297 }
4298
4299 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4300 params.plink_action =
4301 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4302 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4303 return -EINVAL;
4304 }
4305
4306 err = nl80211_parse_sta_channel_info(info, &params);
4307 if (err)
4308 return err;
4309
4310 err = nl80211_parse_sta_wme(info, &params);
4311 if (err)
4312 return err;
4313
4314 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4315 return -EINVAL;
4316
4317 /* When you run into this, adjust the code below for the new flag */
4318 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4319
4320 switch (dev->ieee80211_ptr->iftype) {
4321 case NL80211_IFTYPE_AP:
4322 case NL80211_IFTYPE_AP_VLAN:
4323 case NL80211_IFTYPE_P2P_GO:
4324 /* ignore WME attributes if iface/sta is not capable */
4325 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4326 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4327 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4328
4329 /* TDLS peers cannot be added */
4330 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4331 info->attrs[NL80211_ATTR_PEER_AID])
4332 return -EINVAL;
4333 /* but don't bother the driver with it */
4334 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4335
4336 /* allow authenticated/associated only if driver handles it */
4337 if (!(rdev->wiphy.features &
4338 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4339 params.sta_flags_mask &
4340 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4341 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4342 return -EINVAL;
4343
4344 /* must be last in here for error handling */
4345 params.vlan = get_vlan(info, rdev);
4346 if (IS_ERR(params.vlan))
4347 return PTR_ERR(params.vlan);
4348 break;
4349 case NL80211_IFTYPE_MESH_POINT:
4350 /* ignore uAPSD data */
4351 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4352
4353 /* associated is disallowed */
4354 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4355 return -EINVAL;
4356 /* TDLS peers cannot be added */
4357 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4358 info->attrs[NL80211_ATTR_PEER_AID])
4359 return -EINVAL;
4360 break;
4361 case NL80211_IFTYPE_STATION:
4362 case NL80211_IFTYPE_P2P_CLIENT:
4363 /* ignore uAPSD data */
4364 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4365
4366 /* these are disallowed */
4367 if (params.sta_flags_mask &
4368 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4369 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4370 return -EINVAL;
4371 /* Only TDLS peers can be added */
4372 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4373 return -EINVAL;
4374 /* Can only add if TDLS ... */
4375 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4376 return -EOPNOTSUPP;
4377 /* ... with external setup is supported */
4378 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4379 return -EOPNOTSUPP;
4380 /*
4381 * Older wpa_supplicant versions always mark the TDLS peer
4382 * as authorized, but it shouldn't yet be.
4383 */
4384 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4385 break;
4386 default:
4387 return -EOPNOTSUPP;
4388 }
4389
4390 /* be aware of params.vlan when changing code here */
4391
4392 err = rdev_add_station(rdev, dev, mac_addr, &params);
4393
4394 if (params.vlan)
4395 dev_put(params.vlan);
4396 return err;
4397 }
4398
4399 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4400 {
4401 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4402 struct net_device *dev = info->user_ptr[1];
4403 struct station_del_parameters params;
4404
4405 memset(&params, 0, sizeof(params));
4406
4407 if (info->attrs[NL80211_ATTR_MAC])
4408 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4409
4410 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4411 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4412 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4413 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4414 return -EINVAL;
4415
4416 if (!rdev->ops->del_station)
4417 return -EOPNOTSUPP;
4418
4419 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4420 params.subtype =
4421 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4422 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4423 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4424 return -EINVAL;
4425 } else {
4426 /* Default to Deauthentication frame */
4427 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4428 }
4429
4430 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4431 params.reason_code =
4432 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4433 if (params.reason_code == 0)
4434 return -EINVAL; /* 0 is reserved */
4435 } else {
4436 /* Default to reason code 2 */
4437 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4438 }
4439
4440 return rdev_del_station(rdev, dev, &params);
4441 }
4442
4443 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4444 int flags, struct net_device *dev,
4445 u8 *dst, u8 *next_hop,
4446 struct mpath_info *pinfo)
4447 {
4448 void *hdr;
4449 struct nlattr *pinfoattr;
4450
4451 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4452 if (!hdr)
4453 return -1;
4454
4455 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4456 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4457 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4458 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4459 goto nla_put_failure;
4460
4461 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4462 if (!pinfoattr)
4463 goto nla_put_failure;
4464 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4465 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4466 pinfo->frame_qlen))
4467 goto nla_put_failure;
4468 if (((pinfo->filled & MPATH_INFO_SN) &&
4469 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4470 ((pinfo->filled & MPATH_INFO_METRIC) &&
4471 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4472 pinfo->metric)) ||
4473 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4474 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4475 pinfo->exptime)) ||
4476 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4477 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4478 pinfo->flags)) ||
4479 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4480 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4481 pinfo->discovery_timeout)) ||
4482 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4483 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4484 pinfo->discovery_retries)))
4485 goto nla_put_failure;
4486
4487 nla_nest_end(msg, pinfoattr);
4488
4489 return genlmsg_end(msg, hdr);
4490
4491 nla_put_failure:
4492 genlmsg_cancel(msg, hdr);
4493 return -EMSGSIZE;
4494 }
4495
4496 static int nl80211_dump_mpath(struct sk_buff *skb,
4497 struct netlink_callback *cb)
4498 {
4499 struct mpath_info pinfo;
4500 struct cfg80211_registered_device *rdev;
4501 struct wireless_dev *wdev;
4502 u8 dst[ETH_ALEN];
4503 u8 next_hop[ETH_ALEN];
4504 int path_idx = cb->args[2];
4505 int err;
4506
4507 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4508 if (err)
4509 return err;
4510
4511 if (!rdev->ops->dump_mpath) {
4512 err = -EOPNOTSUPP;
4513 goto out_err;
4514 }
4515
4516 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4517 err = -EOPNOTSUPP;
4518 goto out_err;
4519 }
4520
4521 while (1) {
4522 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4523 next_hop, &pinfo);
4524 if (err == -ENOENT)
4525 break;
4526 if (err)
4527 goto out_err;
4528
4529 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4530 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4531 wdev->netdev, dst, next_hop,
4532 &pinfo) < 0)
4533 goto out;
4534
4535 path_idx++;
4536 }
4537
4538
4539 out:
4540 cb->args[2] = path_idx;
4541 err = skb->len;
4542 out_err:
4543 nl80211_finish_wdev_dump(rdev);
4544 return err;
4545 }
4546
4547 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4548 {
4549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4550 int err;
4551 struct net_device *dev = info->user_ptr[1];
4552 struct mpath_info pinfo;
4553 struct sk_buff *msg;
4554 u8 *dst = NULL;
4555 u8 next_hop[ETH_ALEN];
4556
4557 memset(&pinfo, 0, sizeof(pinfo));
4558
4559 if (!info->attrs[NL80211_ATTR_MAC])
4560 return -EINVAL;
4561
4562 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4563
4564 if (!rdev->ops->get_mpath)
4565 return -EOPNOTSUPP;
4566
4567 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4568 return -EOPNOTSUPP;
4569
4570 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4571 if (err)
4572 return err;
4573
4574 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4575 if (!msg)
4576 return -ENOMEM;
4577
4578 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4579 dev, dst, next_hop, &pinfo) < 0) {
4580 nlmsg_free(msg);
4581 return -ENOBUFS;
4582 }
4583
4584 return genlmsg_reply(msg, info);
4585 }
4586
4587 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4588 {
4589 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4590 struct net_device *dev = info->user_ptr[1];
4591 u8 *dst = NULL;
4592 u8 *next_hop = NULL;
4593
4594 if (!info->attrs[NL80211_ATTR_MAC])
4595 return -EINVAL;
4596
4597 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4598 return -EINVAL;
4599
4600 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4601 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4602
4603 if (!rdev->ops->change_mpath)
4604 return -EOPNOTSUPP;
4605
4606 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4607 return -EOPNOTSUPP;
4608
4609 return rdev_change_mpath(rdev, dev, dst, next_hop);
4610 }
4611
4612 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4613 {
4614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4615 struct net_device *dev = info->user_ptr[1];
4616 u8 *dst = NULL;
4617 u8 *next_hop = NULL;
4618
4619 if (!info->attrs[NL80211_ATTR_MAC])
4620 return -EINVAL;
4621
4622 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4623 return -EINVAL;
4624
4625 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4626 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4627
4628 if (!rdev->ops->add_mpath)
4629 return -EOPNOTSUPP;
4630
4631 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4632 return -EOPNOTSUPP;
4633
4634 return rdev_add_mpath(rdev, dev, dst, next_hop);
4635 }
4636
4637 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4638 {
4639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4640 struct net_device *dev = info->user_ptr[1];
4641 u8 *dst = NULL;
4642
4643 if (info->attrs[NL80211_ATTR_MAC])
4644 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4645
4646 if (!rdev->ops->del_mpath)
4647 return -EOPNOTSUPP;
4648
4649 return rdev_del_mpath(rdev, dev, dst);
4650 }
4651
4652 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4653 {
4654 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4655 int err;
4656 struct net_device *dev = info->user_ptr[1];
4657 struct mpath_info pinfo;
4658 struct sk_buff *msg;
4659 u8 *dst = NULL;
4660 u8 mpp[ETH_ALEN];
4661
4662 memset(&pinfo, 0, sizeof(pinfo));
4663
4664 if (!info->attrs[NL80211_ATTR_MAC])
4665 return -EINVAL;
4666
4667 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4668
4669 if (!rdev->ops->get_mpp)
4670 return -EOPNOTSUPP;
4671
4672 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4673 return -EOPNOTSUPP;
4674
4675 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4676 if (err)
4677 return err;
4678
4679 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4680 if (!msg)
4681 return -ENOMEM;
4682
4683 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4684 dev, dst, mpp, &pinfo) < 0) {
4685 nlmsg_free(msg);
4686 return -ENOBUFS;
4687 }
4688
4689 return genlmsg_reply(msg, info);
4690 }
4691
4692 static int nl80211_dump_mpp(struct sk_buff *skb,
4693 struct netlink_callback *cb)
4694 {
4695 struct mpath_info pinfo;
4696 struct cfg80211_registered_device *rdev;
4697 struct wireless_dev *wdev;
4698 u8 dst[ETH_ALEN];
4699 u8 mpp[ETH_ALEN];
4700 int path_idx = cb->args[2];
4701 int err;
4702
4703 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4704 if (err)
4705 return err;
4706
4707 if (!rdev->ops->dump_mpp) {
4708 err = -EOPNOTSUPP;
4709 goto out_err;
4710 }
4711
4712 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4713 err = -EOPNOTSUPP;
4714 goto out_err;
4715 }
4716
4717 while (1) {
4718 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4719 mpp, &pinfo);
4720 if (err == -ENOENT)
4721 break;
4722 if (err)
4723 goto out_err;
4724
4725 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4726 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4727 wdev->netdev, dst, mpp,
4728 &pinfo) < 0)
4729 goto out;
4730
4731 path_idx++;
4732 }
4733
4734 out:
4735 cb->args[2] = path_idx;
4736 err = skb->len;
4737 out_err:
4738 nl80211_finish_wdev_dump(rdev);
4739 return err;
4740 }
4741
4742 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4743 {
4744 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4745 struct net_device *dev = info->user_ptr[1];
4746 struct wireless_dev *wdev = dev->ieee80211_ptr;
4747 struct bss_parameters params;
4748 int err;
4749
4750 memset(&params, 0, sizeof(params));
4751 /* default to not changing parameters */
4752 params.use_cts_prot = -1;
4753 params.use_short_preamble = -1;
4754 params.use_short_slot_time = -1;
4755 params.ap_isolate = -1;
4756 params.ht_opmode = -1;
4757 params.p2p_ctwindow = -1;
4758 params.p2p_opp_ps = -1;
4759
4760 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4761 params.use_cts_prot =
4762 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4763 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4764 params.use_short_preamble =
4765 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4766 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4767 params.use_short_slot_time =
4768 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4769 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4770 params.basic_rates =
4771 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4772 params.basic_rates_len =
4773 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4774 }
4775 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4776 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4777 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4778 params.ht_opmode =
4779 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4780
4781 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4782 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4783 return -EINVAL;
4784 params.p2p_ctwindow =
4785 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4786 if (params.p2p_ctwindow < 0)
4787 return -EINVAL;
4788 if (params.p2p_ctwindow != 0 &&
4789 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4790 return -EINVAL;
4791 }
4792
4793 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4794 u8 tmp;
4795
4796 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4797 return -EINVAL;
4798 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4799 if (tmp > 1)
4800 return -EINVAL;
4801 params.p2p_opp_ps = tmp;
4802 if (params.p2p_opp_ps &&
4803 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4804 return -EINVAL;
4805 }
4806
4807 if (!rdev->ops->change_bss)
4808 return -EOPNOTSUPP;
4809
4810 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4811 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4812 return -EOPNOTSUPP;
4813
4814 wdev_lock(wdev);
4815 err = rdev_change_bss(rdev, dev, &params);
4816 wdev_unlock(wdev);
4817
4818 return err;
4819 }
4820
4821 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4822 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4823 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4824 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4825 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4826 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4827 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4828 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4829 };
4830
4831 static int parse_reg_rule(struct nlattr *tb[],
4832 struct ieee80211_reg_rule *reg_rule)
4833 {
4834 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4835 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4836
4837 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4838 return -EINVAL;
4839 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4840 return -EINVAL;
4841 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4842 return -EINVAL;
4843 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4844 return -EINVAL;
4845 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4846 return -EINVAL;
4847
4848 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4849
4850 freq_range->start_freq_khz =
4851 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4852 freq_range->end_freq_khz =
4853 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4854 freq_range->max_bandwidth_khz =
4855 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4856
4857 power_rule->max_eirp =
4858 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4859
4860 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4861 power_rule->max_antenna_gain =
4862 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4863
4864 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4865 reg_rule->dfs_cac_ms =
4866 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4867
4868 return 0;
4869 }
4870
4871 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4872 {
4873 char *data = NULL;
4874 enum nl80211_user_reg_hint_type user_reg_hint_type;
4875
4876 /*
4877 * You should only get this when cfg80211 hasn't yet initialized
4878 * completely when built-in to the kernel right between the time
4879 * window between nl80211_init() and regulatory_init(), if that is
4880 * even possible.
4881 */
4882 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4883 return -EINPROGRESS;
4884
4885 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4886 user_reg_hint_type =
4887 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4888 else
4889 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4890
4891 switch (user_reg_hint_type) {
4892 case NL80211_USER_REG_HINT_USER:
4893 case NL80211_USER_REG_HINT_CELL_BASE:
4894 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4895 return -EINVAL;
4896
4897 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4898 return regulatory_hint_user(data, user_reg_hint_type);
4899 case NL80211_USER_REG_HINT_INDOOR:
4900 return regulatory_hint_indoor_user();
4901 default:
4902 return -EINVAL;
4903 }
4904 }
4905
4906 static int nl80211_get_mesh_config(struct sk_buff *skb,
4907 struct genl_info *info)
4908 {
4909 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4910 struct net_device *dev = info->user_ptr[1];
4911 struct wireless_dev *wdev = dev->ieee80211_ptr;
4912 struct mesh_config cur_params;
4913 int err = 0;
4914 void *hdr;
4915 struct nlattr *pinfoattr;
4916 struct sk_buff *msg;
4917
4918 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4919 return -EOPNOTSUPP;
4920
4921 if (!rdev->ops->get_mesh_config)
4922 return -EOPNOTSUPP;
4923
4924 wdev_lock(wdev);
4925 /* If not connected, get default parameters */
4926 if (!wdev->mesh_id_len)
4927 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4928 else
4929 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4930 wdev_unlock(wdev);
4931
4932 if (err)
4933 return err;
4934
4935 /* Draw up a netlink message to send back */
4936 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4937 if (!msg)
4938 return -ENOMEM;
4939 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4940 NL80211_CMD_GET_MESH_CONFIG);
4941 if (!hdr)
4942 goto out;
4943 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4944 if (!pinfoattr)
4945 goto nla_put_failure;
4946 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4947 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4948 cur_params.dot11MeshRetryTimeout) ||
4949 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4950 cur_params.dot11MeshConfirmTimeout) ||
4951 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4952 cur_params.dot11MeshHoldingTimeout) ||
4953 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4954 cur_params.dot11MeshMaxPeerLinks) ||
4955 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4956 cur_params.dot11MeshMaxRetries) ||
4957 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4958 cur_params.dot11MeshTTL) ||
4959 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4960 cur_params.element_ttl) ||
4961 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4962 cur_params.auto_open_plinks) ||
4963 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4964 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4965 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4966 cur_params.dot11MeshHWMPmaxPREQretries) ||
4967 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4968 cur_params.path_refresh_time) ||
4969 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4970 cur_params.min_discovery_timeout) ||
4971 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4972 cur_params.dot11MeshHWMPactivePathTimeout) ||
4973 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4974 cur_params.dot11MeshHWMPpreqMinInterval) ||
4975 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4976 cur_params.dot11MeshHWMPperrMinInterval) ||
4977 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4978 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4979 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4980 cur_params.dot11MeshHWMPRootMode) ||
4981 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4982 cur_params.dot11MeshHWMPRannInterval) ||
4983 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4984 cur_params.dot11MeshGateAnnouncementProtocol) ||
4985 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4986 cur_params.dot11MeshForwarding) ||
4987 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4988 cur_params.rssi_threshold) ||
4989 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4990 cur_params.ht_opmode) ||
4991 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4992 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4993 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4994 cur_params.dot11MeshHWMProotInterval) ||
4995 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4996 cur_params.dot11MeshHWMPconfirmationInterval) ||
4997 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4998 cur_params.power_mode) ||
4999 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5000 cur_params.dot11MeshAwakeWindowDuration) ||
5001 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5002 cur_params.plink_timeout))
5003 goto nla_put_failure;
5004 nla_nest_end(msg, pinfoattr);
5005 genlmsg_end(msg, hdr);
5006 return genlmsg_reply(msg, info);
5007
5008 nla_put_failure:
5009 genlmsg_cancel(msg, hdr);
5010 out:
5011 nlmsg_free(msg);
5012 return -ENOBUFS;
5013 }
5014
5015 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5016 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5017 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5018 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5019 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5020 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5021 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5022 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5023 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5024 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5025 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5026 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5027 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5028 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5029 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5030 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5031 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5032 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5033 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5034 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5035 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5036 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5037 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5038 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5039 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5040 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5041 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5042 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5043 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5044 };
5045
5046 static const struct nla_policy
5047 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5048 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5049 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5050 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5051 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5052 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5053 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5054 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5055 .len = IEEE80211_MAX_DATA_LEN },
5056 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5057 };
5058
5059 static int nl80211_parse_mesh_config(struct genl_info *info,
5060 struct mesh_config *cfg,
5061 u32 *mask_out)
5062 {
5063 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5064 u32 mask = 0;
5065
5066 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5067 do { \
5068 if (tb[attr]) { \
5069 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5070 return -EINVAL; \
5071 cfg->param = fn(tb[attr]); \
5072 mask |= (1 << (attr - 1)); \
5073 } \
5074 } while (0)
5075
5076
5077 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5078 return -EINVAL;
5079 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5080 info->attrs[NL80211_ATTR_MESH_CONFIG],
5081 nl80211_meshconf_params_policy))
5082 return -EINVAL;
5083
5084 /* This makes sure that there aren't more than 32 mesh config
5085 * parameters (otherwise our bitfield scheme would not work.) */
5086 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5087
5088 /* Fill in the params struct */
5089 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5090 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5091 nla_get_u16);
5092 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5093 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5094 nla_get_u16);
5095 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5096 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5097 nla_get_u16);
5098 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5099 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5100 nla_get_u16);
5101 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5102 mask, NL80211_MESHCONF_MAX_RETRIES,
5103 nla_get_u8);
5104 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5105 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5106 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5107 mask, NL80211_MESHCONF_ELEMENT_TTL,
5108 nla_get_u8);
5109 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5110 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5111 nla_get_u8);
5112 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5113 1, 255, mask,
5114 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5115 nla_get_u32);
5116 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5117 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5118 nla_get_u8);
5119 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5120 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5121 nla_get_u32);
5122 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5123 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5124 nla_get_u16);
5125 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5126 1, 65535, mask,
5127 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5128 nla_get_u32);
5129 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5130 1, 65535, mask,
5131 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5132 nla_get_u16);
5133 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5134 1, 65535, mask,
5135 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5136 nla_get_u16);
5137 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5138 dot11MeshHWMPnetDiameterTraversalTime,
5139 1, 65535, mask,
5140 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5141 nla_get_u16);
5142 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5143 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5144 nla_get_u8);
5145 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5146 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5147 nla_get_u16);
5148 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5149 dot11MeshGateAnnouncementProtocol, 0, 1,
5150 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5151 nla_get_u8);
5152 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5153 mask, NL80211_MESHCONF_FORWARDING,
5154 nla_get_u8);
5155 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5156 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5157 nla_get_s32);
5158 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5159 mask, NL80211_MESHCONF_HT_OPMODE,
5160 nla_get_u16);
5161 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5162 1, 65535, mask,
5163 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5164 nla_get_u32);
5165 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5166 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5167 nla_get_u16);
5168 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5169 dot11MeshHWMPconfirmationInterval,
5170 1, 65535, mask,
5171 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5172 nla_get_u16);
5173 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5174 NL80211_MESH_POWER_ACTIVE,
5175 NL80211_MESH_POWER_MAX,
5176 mask, NL80211_MESHCONF_POWER_MODE,
5177 nla_get_u32);
5178 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5179 0, 65535, mask,
5180 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5182 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5183 nla_get_u32);
5184 if (mask_out)
5185 *mask_out = mask;
5186
5187 return 0;
5188
5189 #undef FILL_IN_MESH_PARAM_IF_SET
5190 }
5191
5192 static int nl80211_parse_mesh_setup(struct genl_info *info,
5193 struct mesh_setup *setup)
5194 {
5195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5196 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5197
5198 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5199 return -EINVAL;
5200 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5201 info->attrs[NL80211_ATTR_MESH_SETUP],
5202 nl80211_mesh_setup_params_policy))
5203 return -EINVAL;
5204
5205 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5206 setup->sync_method =
5207 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5208 IEEE80211_SYNC_METHOD_VENDOR :
5209 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5210
5211 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5212 setup->path_sel_proto =
5213 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5214 IEEE80211_PATH_PROTOCOL_VENDOR :
5215 IEEE80211_PATH_PROTOCOL_HWMP;
5216
5217 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5218 setup->path_metric =
5219 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5220 IEEE80211_PATH_METRIC_VENDOR :
5221 IEEE80211_PATH_METRIC_AIRTIME;
5222
5223
5224 if (tb[NL80211_MESH_SETUP_IE]) {
5225 struct nlattr *ieattr =
5226 tb[NL80211_MESH_SETUP_IE];
5227 if (!is_valid_ie_attr(ieattr))
5228 return -EINVAL;
5229 setup->ie = nla_data(ieattr);
5230 setup->ie_len = nla_len(ieattr);
5231 }
5232 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5233 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5234 return -EINVAL;
5235 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5236 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5237 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5238 if (setup->is_secure)
5239 setup->user_mpm = true;
5240
5241 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5242 if (!setup->user_mpm)
5243 return -EINVAL;
5244 setup->auth_id =
5245 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5246 }
5247
5248 return 0;
5249 }
5250
5251 static int nl80211_update_mesh_config(struct sk_buff *skb,
5252 struct genl_info *info)
5253 {
5254 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5255 struct net_device *dev = info->user_ptr[1];
5256 struct wireless_dev *wdev = dev->ieee80211_ptr;
5257 struct mesh_config cfg;
5258 u32 mask;
5259 int err;
5260
5261 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5262 return -EOPNOTSUPP;
5263
5264 if (!rdev->ops->update_mesh_config)
5265 return -EOPNOTSUPP;
5266
5267 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5268 if (err)
5269 return err;
5270
5271 wdev_lock(wdev);
5272 if (!wdev->mesh_id_len)
5273 err = -ENOLINK;
5274
5275 if (!err)
5276 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5277
5278 wdev_unlock(wdev);
5279
5280 return err;
5281 }
5282
5283 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5284 {
5285 const struct ieee80211_regdomain *regdom;
5286 struct sk_buff *msg;
5287 void *hdr = NULL;
5288 struct nlattr *nl_reg_rules;
5289 unsigned int i;
5290
5291 if (!cfg80211_regdomain)
5292 return -EINVAL;
5293
5294 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5295 if (!msg)
5296 return -ENOBUFS;
5297
5298 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5299 NL80211_CMD_GET_REG);
5300 if (!hdr)
5301 goto put_failure;
5302
5303 if (reg_last_request_cell_base() &&
5304 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5305 NL80211_USER_REG_HINT_CELL_BASE))
5306 goto nla_put_failure;
5307
5308 rcu_read_lock();
5309 regdom = rcu_dereference(cfg80211_regdomain);
5310
5311 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5312 (regdom->dfs_region &&
5313 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5314 goto nla_put_failure_rcu;
5315
5316 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5317 if (!nl_reg_rules)
5318 goto nla_put_failure_rcu;
5319
5320 for (i = 0; i < regdom->n_reg_rules; i++) {
5321 struct nlattr *nl_reg_rule;
5322 const struct ieee80211_reg_rule *reg_rule;
5323 const struct ieee80211_freq_range *freq_range;
5324 const struct ieee80211_power_rule *power_rule;
5325 unsigned int max_bandwidth_khz;
5326
5327 reg_rule = &regdom->reg_rules[i];
5328 freq_range = &reg_rule->freq_range;
5329 power_rule = &reg_rule->power_rule;
5330
5331 nl_reg_rule = nla_nest_start(msg, i);
5332 if (!nl_reg_rule)
5333 goto nla_put_failure_rcu;
5334
5335 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5336 if (!max_bandwidth_khz)
5337 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5338 reg_rule);
5339
5340 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5341 reg_rule->flags) ||
5342 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5343 freq_range->start_freq_khz) ||
5344 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5345 freq_range->end_freq_khz) ||
5346 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5347 max_bandwidth_khz) ||
5348 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5349 power_rule->max_antenna_gain) ||
5350 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5351 power_rule->max_eirp) ||
5352 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5353 reg_rule->dfs_cac_ms))
5354 goto nla_put_failure_rcu;
5355
5356 nla_nest_end(msg, nl_reg_rule);
5357 }
5358 rcu_read_unlock();
5359
5360 nla_nest_end(msg, nl_reg_rules);
5361
5362 genlmsg_end(msg, hdr);
5363 return genlmsg_reply(msg, info);
5364
5365 nla_put_failure_rcu:
5366 rcu_read_unlock();
5367 nla_put_failure:
5368 genlmsg_cancel(msg, hdr);
5369 put_failure:
5370 nlmsg_free(msg);
5371 return -EMSGSIZE;
5372 }
5373
5374 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5375 {
5376 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5377 struct nlattr *nl_reg_rule;
5378 char *alpha2 = NULL;
5379 int rem_reg_rules = 0, r = 0;
5380 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5381 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5382 struct ieee80211_regdomain *rd = NULL;
5383
5384 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5385 return -EINVAL;
5386
5387 if (!info->attrs[NL80211_ATTR_REG_RULES])
5388 return -EINVAL;
5389
5390 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5391
5392 if (info->attrs[NL80211_ATTR_DFS_REGION])
5393 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5394
5395 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5396 rem_reg_rules) {
5397 num_rules++;
5398 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5399 return -EINVAL;
5400 }
5401
5402 if (!reg_is_valid_request(alpha2))
5403 return -EINVAL;
5404
5405 size_of_regd = sizeof(struct ieee80211_regdomain) +
5406 num_rules * sizeof(struct ieee80211_reg_rule);
5407
5408 rd = kzalloc(size_of_regd, GFP_KERNEL);
5409 if (!rd)
5410 return -ENOMEM;
5411
5412 rd->n_reg_rules = num_rules;
5413 rd->alpha2[0] = alpha2[0];
5414 rd->alpha2[1] = alpha2[1];
5415
5416 /*
5417 * Disable DFS master mode if the DFS region was
5418 * not supported or known on this kernel.
5419 */
5420 if (reg_supported_dfs_region(dfs_region))
5421 rd->dfs_region = dfs_region;
5422
5423 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5424 rem_reg_rules) {
5425 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5426 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5427 reg_rule_policy);
5428 if (r)
5429 goto bad_reg;
5430 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5431 if (r)
5432 goto bad_reg;
5433
5434 rule_idx++;
5435
5436 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5437 r = -EINVAL;
5438 goto bad_reg;
5439 }
5440 }
5441
5442 r = set_regdom(rd);
5443 /* set_regdom took ownership */
5444 rd = NULL;
5445
5446 bad_reg:
5447 kfree(rd);
5448 return r;
5449 }
5450
5451 static int validate_scan_freqs(struct nlattr *freqs)
5452 {
5453 struct nlattr *attr1, *attr2;
5454 int n_channels = 0, tmp1, tmp2;
5455
5456 nla_for_each_nested(attr1, freqs, tmp1) {
5457 n_channels++;
5458 /*
5459 * Some hardware has a limited channel list for
5460 * scanning, and it is pretty much nonsensical
5461 * to scan for a channel twice, so disallow that
5462 * and don't require drivers to check that the
5463 * channel list they get isn't longer than what
5464 * they can scan, as long as they can scan all
5465 * the channels they registered at once.
5466 */
5467 nla_for_each_nested(attr2, freqs, tmp2)
5468 if (attr1 != attr2 &&
5469 nla_get_u32(attr1) == nla_get_u32(attr2))
5470 return 0;
5471 }
5472
5473 return n_channels;
5474 }
5475
5476 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5477 {
5478 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5479 struct wireless_dev *wdev = info->user_ptr[1];
5480 struct cfg80211_scan_request *request;
5481 struct nlattr *attr;
5482 struct wiphy *wiphy;
5483 int err, tmp, n_ssids = 0, n_channels, i;
5484 size_t ie_len;
5485
5486 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5487 return -EINVAL;
5488
5489 wiphy = &rdev->wiphy;
5490
5491 if (!rdev->ops->scan)
5492 return -EOPNOTSUPP;
5493
5494 if (rdev->scan_req || rdev->scan_msg) {
5495 err = -EBUSY;
5496 goto unlock;
5497 }
5498
5499 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5500 n_channels = validate_scan_freqs(
5501 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5502 if (!n_channels) {
5503 err = -EINVAL;
5504 goto unlock;
5505 }
5506 } else {
5507 n_channels = ieee80211_get_num_supported_channels(wiphy);
5508 }
5509
5510 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5511 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5512 n_ssids++;
5513
5514 if (n_ssids > wiphy->max_scan_ssids) {
5515 err = -EINVAL;
5516 goto unlock;
5517 }
5518
5519 if (info->attrs[NL80211_ATTR_IE])
5520 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5521 else
5522 ie_len = 0;
5523
5524 if (ie_len > wiphy->max_scan_ie_len) {
5525 err = -EINVAL;
5526 goto unlock;
5527 }
5528
5529 request = kzalloc(sizeof(*request)
5530 + sizeof(*request->ssids) * n_ssids
5531 + sizeof(*request->channels) * n_channels
5532 + ie_len, GFP_KERNEL);
5533 if (!request) {
5534 err = -ENOMEM;
5535 goto unlock;
5536 }
5537
5538 if (n_ssids)
5539 request->ssids = (void *)&request->channels[n_channels];
5540 request->n_ssids = n_ssids;
5541 if (ie_len) {
5542 if (request->ssids)
5543 request->ie = (void *)(request->ssids + n_ssids);
5544 else
5545 request->ie = (void *)(request->channels + n_channels);
5546 }
5547
5548 i = 0;
5549 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5550 /* user specified, bail out if channel not found */
5551 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5552 struct ieee80211_channel *chan;
5553
5554 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5555
5556 if (!chan) {
5557 err = -EINVAL;
5558 goto out_free;
5559 }
5560
5561 /* ignore disabled channels */
5562 if (chan->flags & IEEE80211_CHAN_DISABLED)
5563 continue;
5564
5565 request->channels[i] = chan;
5566 i++;
5567 }
5568 } else {
5569 enum ieee80211_band band;
5570
5571 /* all channels */
5572 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5573 int j;
5574 if (!wiphy->bands[band])
5575 continue;
5576 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5577 struct ieee80211_channel *chan;
5578
5579 chan = &wiphy->bands[band]->channels[j];
5580
5581 if (chan->flags & IEEE80211_CHAN_DISABLED)
5582 continue;
5583
5584 request->channels[i] = chan;
5585 i++;
5586 }
5587 }
5588 }
5589
5590 if (!i) {
5591 err = -EINVAL;
5592 goto out_free;
5593 }
5594
5595 request->n_channels = i;
5596
5597 i = 0;
5598 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5599 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5600 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5601 err = -EINVAL;
5602 goto out_free;
5603 }
5604 request->ssids[i].ssid_len = nla_len(attr);
5605 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5606 i++;
5607 }
5608 }
5609
5610 if (info->attrs[NL80211_ATTR_IE]) {
5611 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5612 memcpy((void *)request->ie,
5613 nla_data(info->attrs[NL80211_ATTR_IE]),
5614 request->ie_len);
5615 }
5616
5617 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5618 if (wiphy->bands[i])
5619 request->rates[i] =
5620 (1 << wiphy->bands[i]->n_bitrates) - 1;
5621
5622 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5623 nla_for_each_nested(attr,
5624 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5625 tmp) {
5626 enum ieee80211_band band = nla_type(attr);
5627
5628 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5629 err = -EINVAL;
5630 goto out_free;
5631 }
5632
5633 if (!wiphy->bands[band])
5634 continue;
5635
5636 err = ieee80211_get_ratemask(wiphy->bands[band],
5637 nla_data(attr),
5638 nla_len(attr),
5639 &request->rates[band]);
5640 if (err)
5641 goto out_free;
5642 }
5643 }
5644
5645 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5646 request->flags = nla_get_u32(
5647 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5648 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5649 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5650 err = -EOPNOTSUPP;
5651 goto out_free;
5652 }
5653 }
5654
5655 request->no_cck =
5656 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5657
5658 request->wdev = wdev;
5659 request->wiphy = &rdev->wiphy;
5660 request->scan_start = jiffies;
5661
5662 rdev->scan_req = request;
5663 err = rdev_scan(rdev, request);
5664
5665 if (!err) {
5666 nl80211_send_scan_start(rdev, wdev);
5667 if (wdev->netdev)
5668 dev_hold(wdev->netdev);
5669 } else {
5670 out_free:
5671 rdev->scan_req = NULL;
5672 kfree(request);
5673 }
5674
5675 unlock:
5676 return err;
5677 }
5678
5679 static int nl80211_start_sched_scan(struct sk_buff *skb,
5680 struct genl_info *info)
5681 {
5682 struct cfg80211_sched_scan_request *request;
5683 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5684 struct net_device *dev = info->user_ptr[1];
5685 struct nlattr *attr;
5686 struct wiphy *wiphy;
5687 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5688 u32 interval;
5689 enum ieee80211_band band;
5690 size_t ie_len;
5691 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5692 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5693
5694 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5695 !rdev->ops->sched_scan_start)
5696 return -EOPNOTSUPP;
5697
5698 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5699 return -EINVAL;
5700
5701 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5702 return -EINVAL;
5703
5704 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5705 if (interval == 0)
5706 return -EINVAL;
5707
5708 wiphy = &rdev->wiphy;
5709
5710 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5711 n_channels = validate_scan_freqs(
5712 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5713 if (!n_channels)
5714 return -EINVAL;
5715 } else {
5716 n_channels = ieee80211_get_num_supported_channels(wiphy);
5717 }
5718
5719 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5720 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5721 tmp)
5722 n_ssids++;
5723
5724 if (n_ssids > wiphy->max_sched_scan_ssids)
5725 return -EINVAL;
5726
5727 /*
5728 * First, count the number of 'real' matchsets. Due to an issue with
5729 * the old implementation, matchsets containing only the RSSI attribute
5730 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5731 * RSSI for all matchsets, rather than their own matchset for reporting
5732 * all APs with a strong RSSI. This is needed to be compatible with
5733 * older userspace that treated a matchset with only the RSSI as the
5734 * global RSSI for all other matchsets - if there are other matchsets.
5735 */
5736 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5737 nla_for_each_nested(attr,
5738 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5739 tmp) {
5740 struct nlattr *rssi;
5741
5742 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5743 nla_data(attr), nla_len(attr),
5744 nl80211_match_policy);
5745 if (err)
5746 return err;
5747 /* add other standalone attributes here */
5748 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5749 n_match_sets++;
5750 continue;
5751 }
5752 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5753 if (rssi)
5754 default_match_rssi = nla_get_s32(rssi);
5755 }
5756 }
5757
5758 /* However, if there's no other matchset, add the RSSI one */
5759 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5760 n_match_sets = 1;
5761
5762 if (n_match_sets > wiphy->max_match_sets)
5763 return -EINVAL;
5764
5765 if (info->attrs[NL80211_ATTR_IE])
5766 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5767 else
5768 ie_len = 0;
5769
5770 if (ie_len > wiphy->max_sched_scan_ie_len)
5771 return -EINVAL;
5772
5773 if (rdev->sched_scan_req) {
5774 err = -EINPROGRESS;
5775 goto out;
5776 }
5777
5778 request = kzalloc(sizeof(*request)
5779 + sizeof(*request->ssids) * n_ssids
5780 + sizeof(*request->match_sets) * n_match_sets
5781 + sizeof(*request->channels) * n_channels
5782 + ie_len, GFP_KERNEL);
5783 if (!request) {
5784 err = -ENOMEM;
5785 goto out;
5786 }
5787
5788 if (n_ssids)
5789 request->ssids = (void *)&request->channels[n_channels];
5790 request->n_ssids = n_ssids;
5791 if (ie_len) {
5792 if (request->ssids)
5793 request->ie = (void *)(request->ssids + n_ssids);
5794 else
5795 request->ie = (void *)(request->channels + n_channels);
5796 }
5797
5798 if (n_match_sets) {
5799 if (request->ie)
5800 request->match_sets = (void *)(request->ie + ie_len);
5801 else if (request->ssids)
5802 request->match_sets =
5803 (void *)(request->ssids + n_ssids);
5804 else
5805 request->match_sets =
5806 (void *)(request->channels + n_channels);
5807 }
5808 request->n_match_sets = n_match_sets;
5809
5810 i = 0;
5811 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5812 /* user specified, bail out if channel not found */
5813 nla_for_each_nested(attr,
5814 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5815 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 /* all channels */
5834 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5835 int j;
5836 if (!wiphy->bands[band])
5837 continue;
5838 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5839 struct ieee80211_channel *chan;
5840
5841 chan = &wiphy->bands[band]->channels[j];
5842
5843 if (chan->flags & IEEE80211_CHAN_DISABLED)
5844 continue;
5845
5846 request->channels[i] = chan;
5847 i++;
5848 }
5849 }
5850 }
5851
5852 if (!i) {
5853 err = -EINVAL;
5854 goto out_free;
5855 }
5856
5857 request->n_channels = i;
5858
5859 i = 0;
5860 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5861 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5862 tmp) {
5863 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5864 err = -EINVAL;
5865 goto out_free;
5866 }
5867 request->ssids[i].ssid_len = nla_len(attr);
5868 memcpy(request->ssids[i].ssid, nla_data(attr),
5869 nla_len(attr));
5870 i++;
5871 }
5872 }
5873
5874 i = 0;
5875 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5876 nla_for_each_nested(attr,
5877 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5878 tmp) {
5879 struct nlattr *ssid, *rssi;
5880
5881 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5882 nla_data(attr), nla_len(attr),
5883 nl80211_match_policy);
5884 if (err)
5885 goto out_free;
5886 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5887 if (ssid) {
5888 if (WARN_ON(i >= n_match_sets)) {
5889 /* this indicates a programming error,
5890 * the loop above should have verified
5891 * things properly
5892 */
5893 err = -EINVAL;
5894 goto out_free;
5895 }
5896
5897 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5898 err = -EINVAL;
5899 goto out_free;
5900 }
5901 memcpy(request->match_sets[i].ssid.ssid,
5902 nla_data(ssid), nla_len(ssid));
5903 request->match_sets[i].ssid.ssid_len =
5904 nla_len(ssid);
5905 /* special attribute - old implemenation w/a */
5906 request->match_sets[i].rssi_thold =
5907 default_match_rssi;
5908 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5909 if (rssi)
5910 request->match_sets[i].rssi_thold =
5911 nla_get_s32(rssi);
5912 }
5913 i++;
5914 }
5915
5916 /* there was no other matchset, so the RSSI one is alone */
5917 if (i == 0)
5918 request->match_sets[0].rssi_thold = default_match_rssi;
5919
5920 request->min_rssi_thold = INT_MAX;
5921 for (i = 0; i < n_match_sets; i++)
5922 request->min_rssi_thold =
5923 min(request->match_sets[i].rssi_thold,
5924 request->min_rssi_thold);
5925 } else {
5926 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5927 }
5928
5929 if (ie_len) {
5930 request->ie_len = ie_len;
5931 memcpy((void *)request->ie,
5932 nla_data(info->attrs[NL80211_ATTR_IE]),
5933 request->ie_len);
5934 }
5935
5936 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5937 request->flags = nla_get_u32(
5938 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5939 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5940 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5941 err = -EOPNOTSUPP;
5942 goto out_free;
5943 }
5944 }
5945
5946 request->dev = dev;
5947 request->wiphy = &rdev->wiphy;
5948 request->interval = interval;
5949 request->scan_start = jiffies;
5950
5951 err = rdev_sched_scan_start(rdev, dev, request);
5952 if (!err) {
5953 rdev->sched_scan_req = request;
5954 nl80211_send_sched_scan(rdev, dev,
5955 NL80211_CMD_START_SCHED_SCAN);
5956 goto out;
5957 }
5958
5959 out_free:
5960 kfree(request);
5961 out:
5962 return err;
5963 }
5964
5965 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5966 struct genl_info *info)
5967 {
5968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5969
5970 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5971 !rdev->ops->sched_scan_stop)
5972 return -EOPNOTSUPP;
5973
5974 return __cfg80211_stop_sched_scan(rdev, false);
5975 }
5976
5977 static int nl80211_start_radar_detection(struct sk_buff *skb,
5978 struct genl_info *info)
5979 {
5980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5981 struct net_device *dev = info->user_ptr[1];
5982 struct wireless_dev *wdev = dev->ieee80211_ptr;
5983 struct cfg80211_chan_def chandef;
5984 enum nl80211_dfs_regions dfs_region;
5985 unsigned int cac_time_ms;
5986 int err;
5987
5988 dfs_region = reg_get_dfs_region(wdev->wiphy);
5989 if (dfs_region == NL80211_DFS_UNSET)
5990 return -EINVAL;
5991
5992 err = nl80211_parse_chandef(rdev, info, &chandef);
5993 if (err)
5994 return err;
5995
5996 if (netif_carrier_ok(dev))
5997 return -EBUSY;
5998
5999 if (wdev->cac_started)
6000 return -EBUSY;
6001
6002 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6003 wdev->iftype);
6004 if (err < 0)
6005 return err;
6006
6007 if (err == 0)
6008 return -EINVAL;
6009
6010 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6011 return -EINVAL;
6012
6013 if (!rdev->ops->start_radar_detection)
6014 return -EOPNOTSUPP;
6015
6016 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6017 if (WARN_ON(!cac_time_ms))
6018 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6019
6020 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6021 cac_time_ms);
6022 if (!err) {
6023 wdev->chandef = chandef;
6024 wdev->cac_started = true;
6025 wdev->cac_start_time = jiffies;
6026 wdev->cac_time_ms = cac_time_ms;
6027 }
6028 return err;
6029 }
6030
6031 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6032 {
6033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6034 struct net_device *dev = info->user_ptr[1];
6035 struct wireless_dev *wdev = dev->ieee80211_ptr;
6036 struct cfg80211_csa_settings params;
6037 /* csa_attrs is defined static to avoid waste of stack size - this
6038 * function is called under RTNL lock, so this should not be a problem.
6039 */
6040 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6041 u8 radar_detect_width = 0;
6042 int err;
6043 bool need_new_beacon = false;
6044 int len, i;
6045 u32 cs_count;
6046
6047 if (!rdev->ops->channel_switch ||
6048 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6049 return -EOPNOTSUPP;
6050
6051 switch (dev->ieee80211_ptr->iftype) {
6052 case NL80211_IFTYPE_AP:
6053 case NL80211_IFTYPE_P2P_GO:
6054 need_new_beacon = true;
6055
6056 /* useless if AP is not running */
6057 if (!wdev->beacon_interval)
6058 return -ENOTCONN;
6059 break;
6060 case NL80211_IFTYPE_ADHOC:
6061 if (!wdev->ssid_len)
6062 return -ENOTCONN;
6063 break;
6064 case NL80211_IFTYPE_MESH_POINT:
6065 if (!wdev->mesh_id_len)
6066 return -ENOTCONN;
6067 break;
6068 default:
6069 return -EOPNOTSUPP;
6070 }
6071
6072 memset(&params, 0, sizeof(params));
6073
6074 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6075 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6076 return -EINVAL;
6077
6078 /* only important for AP, IBSS and mesh create IEs internally */
6079 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6080 return -EINVAL;
6081
6082 /* Even though the attribute is u32, the specification says
6083 * u8, so let's make sure we don't overflow.
6084 */
6085 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6086 if (cs_count > 255)
6087 return -EINVAL;
6088
6089 params.count = cs_count;
6090
6091 if (!need_new_beacon)
6092 goto skip_beacons;
6093
6094 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6095 if (err)
6096 return err;
6097
6098 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6099 info->attrs[NL80211_ATTR_CSA_IES],
6100 nl80211_policy);
6101 if (err)
6102 return err;
6103
6104 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6105 if (err)
6106 return err;
6107
6108 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6109 return -EINVAL;
6110
6111 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6112 if (!len || (len % sizeof(u16)))
6113 return -EINVAL;
6114
6115 params.n_counter_offsets_beacon = len / sizeof(u16);
6116 if (rdev->wiphy.max_num_csa_counters &&
6117 (params.n_counter_offsets_beacon >
6118 rdev->wiphy.max_num_csa_counters))
6119 return -EINVAL;
6120
6121 params.counter_offsets_beacon =
6122 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6123
6124 /* sanity checks - counters should fit and be the same */
6125 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6126 u16 offset = params.counter_offsets_beacon[i];
6127
6128 if (offset >= params.beacon_csa.tail_len)
6129 return -EINVAL;
6130
6131 if (params.beacon_csa.tail[offset] != params.count)
6132 return -EINVAL;
6133 }
6134
6135 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6136 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6137 if (!len || (len % sizeof(u16)))
6138 return -EINVAL;
6139
6140 params.n_counter_offsets_presp = len / sizeof(u16);
6141 if (rdev->wiphy.max_num_csa_counters &&
6142 (params.n_counter_offsets_beacon >
6143 rdev->wiphy.max_num_csa_counters))
6144 return -EINVAL;
6145
6146 params.counter_offsets_presp =
6147 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6148
6149 /* sanity checks - counters should fit and be the same */
6150 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6151 u16 offset = params.counter_offsets_presp[i];
6152
6153 if (offset >= params.beacon_csa.probe_resp_len)
6154 return -EINVAL;
6155
6156 if (params.beacon_csa.probe_resp[offset] !=
6157 params.count)
6158 return -EINVAL;
6159 }
6160 }
6161
6162 skip_beacons:
6163 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6164 if (err)
6165 return err;
6166
6167 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6168 wdev->iftype))
6169 return -EINVAL;
6170
6171 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6172 &params.chandef,
6173 wdev->iftype);
6174 if (err < 0)
6175 return err;
6176
6177 if (err > 0) {
6178 radar_detect_width = BIT(params.chandef.width);
6179 params.radar_required = true;
6180 }
6181
6182 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6183 params.block_tx = true;
6184
6185 wdev_lock(wdev);
6186 err = rdev_channel_switch(rdev, dev, &params);
6187 wdev_unlock(wdev);
6188
6189 return err;
6190 }
6191
6192 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6193 u32 seq, int flags,
6194 struct cfg80211_registered_device *rdev,
6195 struct wireless_dev *wdev,
6196 struct cfg80211_internal_bss *intbss)
6197 {
6198 struct cfg80211_bss *res = &intbss->pub;
6199 const struct cfg80211_bss_ies *ies;
6200 void *hdr;
6201 struct nlattr *bss;
6202
6203 ASSERT_WDEV_LOCK(wdev);
6204
6205 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6206 NL80211_CMD_NEW_SCAN_RESULTS);
6207 if (!hdr)
6208 return -1;
6209
6210 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6211
6212 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6213 goto nla_put_failure;
6214 if (wdev->netdev &&
6215 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6216 goto nla_put_failure;
6217 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6218 goto nla_put_failure;
6219
6220 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6221 if (!bss)
6222 goto nla_put_failure;
6223 if ((!is_zero_ether_addr(res->bssid) &&
6224 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6225 goto nla_put_failure;
6226
6227 rcu_read_lock();
6228 /* indicate whether we have probe response data or not */
6229 if (rcu_access_pointer(res->proberesp_ies) &&
6230 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6231 goto fail_unlock_rcu;
6232
6233 /* this pointer prefers to be pointed to probe response data
6234 * but is always valid
6235 */
6236 ies = rcu_dereference(res->ies);
6237 if (ies) {
6238 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6239 goto fail_unlock_rcu;
6240 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6241 ies->len, ies->data))
6242 goto fail_unlock_rcu;
6243 }
6244
6245 /* and this pointer is always (unless driver didn't know) beacon data */
6246 ies = rcu_dereference(res->beacon_ies);
6247 if (ies && ies->from_beacon) {
6248 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6249 goto fail_unlock_rcu;
6250 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6251 ies->len, ies->data))
6252 goto fail_unlock_rcu;
6253 }
6254 rcu_read_unlock();
6255
6256 if (res->beacon_interval &&
6257 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6258 goto nla_put_failure;
6259 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6260 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6261 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6262 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6263 jiffies_to_msecs(jiffies - intbss->ts)))
6264 goto nla_put_failure;
6265
6266 switch (rdev->wiphy.signal_type) {
6267 case CFG80211_SIGNAL_TYPE_MBM:
6268 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6269 goto nla_put_failure;
6270 break;
6271 case CFG80211_SIGNAL_TYPE_UNSPEC:
6272 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6273 goto nla_put_failure;
6274 break;
6275 default:
6276 break;
6277 }
6278
6279 switch (wdev->iftype) {
6280 case NL80211_IFTYPE_P2P_CLIENT:
6281 case NL80211_IFTYPE_STATION:
6282 if (intbss == wdev->current_bss &&
6283 nla_put_u32(msg, NL80211_BSS_STATUS,
6284 NL80211_BSS_STATUS_ASSOCIATED))
6285 goto nla_put_failure;
6286 break;
6287 case NL80211_IFTYPE_ADHOC:
6288 if (intbss == wdev->current_bss &&
6289 nla_put_u32(msg, NL80211_BSS_STATUS,
6290 NL80211_BSS_STATUS_IBSS_JOINED))
6291 goto nla_put_failure;
6292 break;
6293 default:
6294 break;
6295 }
6296
6297 nla_nest_end(msg, bss);
6298
6299 return genlmsg_end(msg, hdr);
6300
6301 fail_unlock_rcu:
6302 rcu_read_unlock();
6303 nla_put_failure:
6304 genlmsg_cancel(msg, hdr);
6305 return -EMSGSIZE;
6306 }
6307
6308 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6309 {
6310 struct cfg80211_registered_device *rdev;
6311 struct cfg80211_internal_bss *scan;
6312 struct wireless_dev *wdev;
6313 int start = cb->args[2], idx = 0;
6314 int err;
6315
6316 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6317 if (err)
6318 return err;
6319
6320 wdev_lock(wdev);
6321 spin_lock_bh(&rdev->bss_lock);
6322 cfg80211_bss_expire(rdev);
6323
6324 cb->seq = rdev->bss_generation;
6325
6326 list_for_each_entry(scan, &rdev->bss_list, list) {
6327 if (++idx <= start)
6328 continue;
6329 if (nl80211_send_bss(skb, cb,
6330 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6331 rdev, wdev, scan) < 0) {
6332 idx--;
6333 break;
6334 }
6335 }
6336
6337 spin_unlock_bh(&rdev->bss_lock);
6338 wdev_unlock(wdev);
6339
6340 cb->args[2] = idx;
6341 nl80211_finish_wdev_dump(rdev);
6342
6343 return skb->len;
6344 }
6345
6346 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6347 int flags, struct net_device *dev,
6348 struct survey_info *survey)
6349 {
6350 void *hdr;
6351 struct nlattr *infoattr;
6352
6353 hdr = nl80211hdr_put(msg, portid, seq, flags,
6354 NL80211_CMD_NEW_SURVEY_RESULTS);
6355 if (!hdr)
6356 return -ENOMEM;
6357
6358 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6359 goto nla_put_failure;
6360
6361 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6362 if (!infoattr)
6363 goto nla_put_failure;
6364
6365 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6366 survey->channel->center_freq))
6367 goto nla_put_failure;
6368
6369 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6370 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6371 goto nla_put_failure;
6372 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6373 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6374 goto nla_put_failure;
6375 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6376 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6377 survey->channel_time))
6378 goto nla_put_failure;
6379 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6380 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6381 survey->channel_time_busy))
6382 goto nla_put_failure;
6383 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6384 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6385 survey->channel_time_ext_busy))
6386 goto nla_put_failure;
6387 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6388 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6389 survey->channel_time_rx))
6390 goto nla_put_failure;
6391 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6392 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6393 survey->channel_time_tx))
6394 goto nla_put_failure;
6395
6396 nla_nest_end(msg, infoattr);
6397
6398 return genlmsg_end(msg, hdr);
6399
6400 nla_put_failure:
6401 genlmsg_cancel(msg, hdr);
6402 return -EMSGSIZE;
6403 }
6404
6405 static int nl80211_dump_survey(struct sk_buff *skb,
6406 struct netlink_callback *cb)
6407 {
6408 struct survey_info survey;
6409 struct cfg80211_registered_device *rdev;
6410 struct wireless_dev *wdev;
6411 int survey_idx = cb->args[2];
6412 int res;
6413
6414 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6415 if (res)
6416 return res;
6417
6418 if (!wdev->netdev) {
6419 res = -EINVAL;
6420 goto out_err;
6421 }
6422
6423 if (!rdev->ops->dump_survey) {
6424 res = -EOPNOTSUPP;
6425 goto out_err;
6426 }
6427
6428 while (1) {
6429 struct ieee80211_channel *chan;
6430
6431 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6432 if (res == -ENOENT)
6433 break;
6434 if (res)
6435 goto out_err;
6436
6437 /* Survey without a channel doesn't make sense */
6438 if (!survey.channel) {
6439 res = -EINVAL;
6440 goto out;
6441 }
6442
6443 chan = ieee80211_get_channel(&rdev->wiphy,
6444 survey.channel->center_freq);
6445 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6446 survey_idx++;
6447 continue;
6448 }
6449
6450 if (nl80211_send_survey(skb,
6451 NETLINK_CB(cb->skb).portid,
6452 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6453 wdev->netdev, &survey) < 0)
6454 goto out;
6455 survey_idx++;
6456 }
6457
6458 out:
6459 cb->args[2] = survey_idx;
6460 res = skb->len;
6461 out_err:
6462 nl80211_finish_wdev_dump(rdev);
6463 return res;
6464 }
6465
6466 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6467 {
6468 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6469 NL80211_WPA_VERSION_2));
6470 }
6471
6472 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6473 {
6474 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6475 struct net_device *dev = info->user_ptr[1];
6476 struct ieee80211_channel *chan;
6477 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6478 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6479 enum nl80211_auth_type auth_type;
6480 struct key_parse key;
6481 bool local_state_change;
6482
6483 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6484 return -EINVAL;
6485
6486 if (!info->attrs[NL80211_ATTR_MAC])
6487 return -EINVAL;
6488
6489 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6490 return -EINVAL;
6491
6492 if (!info->attrs[NL80211_ATTR_SSID])
6493 return -EINVAL;
6494
6495 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6496 return -EINVAL;
6497
6498 err = nl80211_parse_key(info, &key);
6499 if (err)
6500 return err;
6501
6502 if (key.idx >= 0) {
6503 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6504 return -EINVAL;
6505 if (!key.p.key || !key.p.key_len)
6506 return -EINVAL;
6507 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6508 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6509 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6510 key.p.key_len != WLAN_KEY_LEN_WEP104))
6511 return -EINVAL;
6512 if (key.idx > 4)
6513 return -EINVAL;
6514 } else {
6515 key.p.key_len = 0;
6516 key.p.key = NULL;
6517 }
6518
6519 if (key.idx >= 0) {
6520 int i;
6521 bool ok = false;
6522 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6523 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6524 ok = true;
6525 break;
6526 }
6527 }
6528 if (!ok)
6529 return -EINVAL;
6530 }
6531
6532 if (!rdev->ops->auth)
6533 return -EOPNOTSUPP;
6534
6535 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6536 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6537 return -EOPNOTSUPP;
6538
6539 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6540 chan = nl80211_get_valid_chan(&rdev->wiphy,
6541 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6542 if (!chan)
6543 return -EINVAL;
6544
6545 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6546 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6547
6548 if (info->attrs[NL80211_ATTR_IE]) {
6549 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6550 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6551 }
6552
6553 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6554 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6555 return -EINVAL;
6556
6557 if (auth_type == NL80211_AUTHTYPE_SAE &&
6558 !info->attrs[NL80211_ATTR_SAE_DATA])
6559 return -EINVAL;
6560
6561 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6562 if (auth_type != NL80211_AUTHTYPE_SAE)
6563 return -EINVAL;
6564 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6565 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6566 /* need to include at least Auth Transaction and Status Code */
6567 if (sae_data_len < 4)
6568 return -EINVAL;
6569 }
6570
6571 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6572
6573 /*
6574 * Since we no longer track auth state, ignore
6575 * requests to only change local state.
6576 */
6577 if (local_state_change)
6578 return 0;
6579
6580 wdev_lock(dev->ieee80211_ptr);
6581 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6582 ssid, ssid_len, ie, ie_len,
6583 key.p.key, key.p.key_len, key.idx,
6584 sae_data, sae_data_len);
6585 wdev_unlock(dev->ieee80211_ptr);
6586 return err;
6587 }
6588
6589 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6590 struct genl_info *info,
6591 struct cfg80211_crypto_settings *settings,
6592 int cipher_limit)
6593 {
6594 memset(settings, 0, sizeof(*settings));
6595
6596 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6597
6598 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6599 u16 proto;
6600 proto = nla_get_u16(
6601 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6602 settings->control_port_ethertype = cpu_to_be16(proto);
6603 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6604 proto != ETH_P_PAE)
6605 return -EINVAL;
6606 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6607 settings->control_port_no_encrypt = true;
6608 } else
6609 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6610
6611 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6612 void *data;
6613 int len, i;
6614
6615 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6616 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6617 settings->n_ciphers_pairwise = len / sizeof(u32);
6618
6619 if (len % sizeof(u32))
6620 return -EINVAL;
6621
6622 if (settings->n_ciphers_pairwise > cipher_limit)
6623 return -EINVAL;
6624
6625 memcpy(settings->ciphers_pairwise, data, len);
6626
6627 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6628 if (!cfg80211_supported_cipher_suite(
6629 &rdev->wiphy,
6630 settings->ciphers_pairwise[i]))
6631 return -EINVAL;
6632 }
6633
6634 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6635 settings->cipher_group =
6636 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6637 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6638 settings->cipher_group))
6639 return -EINVAL;
6640 }
6641
6642 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6643 settings->wpa_versions =
6644 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6645 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6646 return -EINVAL;
6647 }
6648
6649 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6650 void *data;
6651 int len;
6652
6653 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6654 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6655 settings->n_akm_suites = len / sizeof(u32);
6656
6657 if (len % sizeof(u32))
6658 return -EINVAL;
6659
6660 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6661 return -EINVAL;
6662
6663 memcpy(settings->akm_suites, data, len);
6664 }
6665
6666 return 0;
6667 }
6668
6669 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6670 {
6671 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6672 struct net_device *dev = info->user_ptr[1];
6673 struct ieee80211_channel *chan;
6674 struct cfg80211_assoc_request req = {};
6675 const u8 *bssid, *ssid;
6676 int err, ssid_len = 0;
6677
6678 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6679 return -EINVAL;
6680
6681 if (!info->attrs[NL80211_ATTR_MAC] ||
6682 !info->attrs[NL80211_ATTR_SSID] ||
6683 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6684 return -EINVAL;
6685
6686 if (!rdev->ops->assoc)
6687 return -EOPNOTSUPP;
6688
6689 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6690 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6691 return -EOPNOTSUPP;
6692
6693 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6694
6695 chan = nl80211_get_valid_chan(&rdev->wiphy,
6696 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6697 if (!chan)
6698 return -EINVAL;
6699
6700 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6701 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6702
6703 if (info->attrs[NL80211_ATTR_IE]) {
6704 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6705 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6706 }
6707
6708 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6709 enum nl80211_mfp mfp =
6710 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6711 if (mfp == NL80211_MFP_REQUIRED)
6712 req.use_mfp = true;
6713 else if (mfp != NL80211_MFP_NO)
6714 return -EINVAL;
6715 }
6716
6717 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6718 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6719
6720 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6721 req.flags |= ASSOC_REQ_DISABLE_HT;
6722
6723 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6724 memcpy(&req.ht_capa_mask,
6725 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6726 sizeof(req.ht_capa_mask));
6727
6728 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6729 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6730 return -EINVAL;
6731 memcpy(&req.ht_capa,
6732 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6733 sizeof(req.ht_capa));
6734 }
6735
6736 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6737 req.flags |= ASSOC_REQ_DISABLE_VHT;
6738
6739 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6740 memcpy(&req.vht_capa_mask,
6741 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6742 sizeof(req.vht_capa_mask));
6743
6744 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6745 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6746 return -EINVAL;
6747 memcpy(&req.vht_capa,
6748 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6749 sizeof(req.vht_capa));
6750 }
6751
6752 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6753 if (!(rdev->wiphy.features &
6754 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6755 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6756 return -EINVAL;
6757 req.flags |= ASSOC_REQ_USE_RRM;
6758 }
6759
6760 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6761 if (!err) {
6762 wdev_lock(dev->ieee80211_ptr);
6763 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6764 ssid, ssid_len, &req);
6765 wdev_unlock(dev->ieee80211_ptr);
6766 }
6767
6768 return err;
6769 }
6770
6771 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6772 {
6773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6774 struct net_device *dev = info->user_ptr[1];
6775 const u8 *ie = NULL, *bssid;
6776 int ie_len = 0, err;
6777 u16 reason_code;
6778 bool local_state_change;
6779
6780 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6781 return -EINVAL;
6782
6783 if (!info->attrs[NL80211_ATTR_MAC])
6784 return -EINVAL;
6785
6786 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6787 return -EINVAL;
6788
6789 if (!rdev->ops->deauth)
6790 return -EOPNOTSUPP;
6791
6792 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6793 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6794 return -EOPNOTSUPP;
6795
6796 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6797
6798 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6799 if (reason_code == 0) {
6800 /* Reason Code 0 is reserved */
6801 return -EINVAL;
6802 }
6803
6804 if (info->attrs[NL80211_ATTR_IE]) {
6805 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6806 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6807 }
6808
6809 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6810
6811 wdev_lock(dev->ieee80211_ptr);
6812 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6813 local_state_change);
6814 wdev_unlock(dev->ieee80211_ptr);
6815 return err;
6816 }
6817
6818 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6819 {
6820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6821 struct net_device *dev = info->user_ptr[1];
6822 const u8 *ie = NULL, *bssid;
6823 int ie_len = 0, err;
6824 u16 reason_code;
6825 bool local_state_change;
6826
6827 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6828 return -EINVAL;
6829
6830 if (!info->attrs[NL80211_ATTR_MAC])
6831 return -EINVAL;
6832
6833 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6834 return -EINVAL;
6835
6836 if (!rdev->ops->disassoc)
6837 return -EOPNOTSUPP;
6838
6839 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6840 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6841 return -EOPNOTSUPP;
6842
6843 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6844
6845 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6846 if (reason_code == 0) {
6847 /* Reason Code 0 is reserved */
6848 return -EINVAL;
6849 }
6850
6851 if (info->attrs[NL80211_ATTR_IE]) {
6852 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6853 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6854 }
6855
6856 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6857
6858 wdev_lock(dev->ieee80211_ptr);
6859 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6860 local_state_change);
6861 wdev_unlock(dev->ieee80211_ptr);
6862 return err;
6863 }
6864
6865 static bool
6866 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6867 int mcast_rate[IEEE80211_NUM_BANDS],
6868 int rateval)
6869 {
6870 struct wiphy *wiphy = &rdev->wiphy;
6871 bool found = false;
6872 int band, i;
6873
6874 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6875 struct ieee80211_supported_band *sband;
6876
6877 sband = wiphy->bands[band];
6878 if (!sband)
6879 continue;
6880
6881 for (i = 0; i < sband->n_bitrates; i++) {
6882 if (sband->bitrates[i].bitrate == rateval) {
6883 mcast_rate[band] = i + 1;
6884 found = true;
6885 break;
6886 }
6887 }
6888 }
6889
6890 return found;
6891 }
6892
6893 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6894 {
6895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6896 struct net_device *dev = info->user_ptr[1];
6897 struct cfg80211_ibss_params ibss;
6898 struct wiphy *wiphy;
6899 struct cfg80211_cached_keys *connkeys = NULL;
6900 int err;
6901
6902 memset(&ibss, 0, sizeof(ibss));
6903
6904 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6905 return -EINVAL;
6906
6907 if (!info->attrs[NL80211_ATTR_SSID] ||
6908 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6909 return -EINVAL;
6910
6911 ibss.beacon_interval = 100;
6912
6913 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6914 ibss.beacon_interval =
6915 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6916 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6917 return -EINVAL;
6918 }
6919
6920 if (!rdev->ops->join_ibss)
6921 return -EOPNOTSUPP;
6922
6923 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6924 return -EOPNOTSUPP;
6925
6926 wiphy = &rdev->wiphy;
6927
6928 if (info->attrs[NL80211_ATTR_MAC]) {
6929 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6930
6931 if (!is_valid_ether_addr(ibss.bssid))
6932 return -EINVAL;
6933 }
6934 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6935 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6936
6937 if (info->attrs[NL80211_ATTR_IE]) {
6938 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6939 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6940 }
6941
6942 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6943 if (err)
6944 return err;
6945
6946 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6947 NL80211_IFTYPE_ADHOC))
6948 return -EINVAL;
6949
6950 switch (ibss.chandef.width) {
6951 case NL80211_CHAN_WIDTH_5:
6952 case NL80211_CHAN_WIDTH_10:
6953 case NL80211_CHAN_WIDTH_20_NOHT:
6954 break;
6955 case NL80211_CHAN_WIDTH_20:
6956 case NL80211_CHAN_WIDTH_40:
6957 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6958 break;
6959 default:
6960 return -EINVAL;
6961 }
6962
6963 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6964 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6965
6966 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6967 u8 *rates =
6968 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6969 int n_rates =
6970 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6971 struct ieee80211_supported_band *sband =
6972 wiphy->bands[ibss.chandef.chan->band];
6973
6974 err = ieee80211_get_ratemask(sband, rates, n_rates,
6975 &ibss.basic_rates);
6976 if (err)
6977 return err;
6978 }
6979
6980 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6981 memcpy(&ibss.ht_capa_mask,
6982 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6983 sizeof(ibss.ht_capa_mask));
6984
6985 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6986 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6987 return -EINVAL;
6988 memcpy(&ibss.ht_capa,
6989 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6990 sizeof(ibss.ht_capa));
6991 }
6992
6993 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6994 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6995 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6996 return -EINVAL;
6997
6998 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6999 bool no_ht = false;
7000
7001 connkeys = nl80211_parse_connkeys(rdev,
7002 info->attrs[NL80211_ATTR_KEYS],
7003 &no_ht);
7004 if (IS_ERR(connkeys))
7005 return PTR_ERR(connkeys);
7006
7007 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7008 no_ht) {
7009 kfree(connkeys);
7010 return -EINVAL;
7011 }
7012 }
7013
7014 ibss.control_port =
7015 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7016
7017 ibss.userspace_handles_dfs =
7018 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7019
7020 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7021 if (err)
7022 kzfree(connkeys);
7023 return err;
7024 }
7025
7026 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7027 {
7028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7029 struct net_device *dev = info->user_ptr[1];
7030
7031 if (!rdev->ops->leave_ibss)
7032 return -EOPNOTSUPP;
7033
7034 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7035 return -EOPNOTSUPP;
7036
7037 return cfg80211_leave_ibss(rdev, dev, false);
7038 }
7039
7040 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7041 {
7042 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7043 struct net_device *dev = info->user_ptr[1];
7044 int mcast_rate[IEEE80211_NUM_BANDS];
7045 u32 nla_rate;
7046 int err;
7047
7048 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7049 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7050 return -EOPNOTSUPP;
7051
7052 if (!rdev->ops->set_mcast_rate)
7053 return -EOPNOTSUPP;
7054
7055 memset(mcast_rate, 0, sizeof(mcast_rate));
7056
7057 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7058 return -EINVAL;
7059
7060 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7061 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7062 return -EINVAL;
7063
7064 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7065
7066 return err;
7067 }
7068
7069 static struct sk_buff *
7070 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7071 int approxlen, u32 portid, u32 seq,
7072 enum nl80211_commands cmd,
7073 enum nl80211_attrs attr,
7074 const struct nl80211_vendor_cmd_info *info,
7075 gfp_t gfp)
7076 {
7077 struct sk_buff *skb;
7078 void *hdr;
7079 struct nlattr *data;
7080
7081 skb = nlmsg_new(approxlen + 100, gfp);
7082 if (!skb)
7083 return NULL;
7084
7085 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7086 if (!hdr) {
7087 kfree_skb(skb);
7088 return NULL;
7089 }
7090
7091 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7092 goto nla_put_failure;
7093
7094 if (info) {
7095 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7096 info->vendor_id))
7097 goto nla_put_failure;
7098 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7099 info->subcmd))
7100 goto nla_put_failure;
7101 }
7102
7103 data = nla_nest_start(skb, attr);
7104
7105 ((void **)skb->cb)[0] = rdev;
7106 ((void **)skb->cb)[1] = hdr;
7107 ((void **)skb->cb)[2] = data;
7108
7109 return skb;
7110
7111 nla_put_failure:
7112 kfree_skb(skb);
7113 return NULL;
7114 }
7115
7116 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7117 enum nl80211_commands cmd,
7118 enum nl80211_attrs attr,
7119 int vendor_event_idx,
7120 int approxlen, gfp_t gfp)
7121 {
7122 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7123 const struct nl80211_vendor_cmd_info *info;
7124
7125 switch (cmd) {
7126 case NL80211_CMD_TESTMODE:
7127 if (WARN_ON(vendor_event_idx != -1))
7128 return NULL;
7129 info = NULL;
7130 break;
7131 case NL80211_CMD_VENDOR:
7132 if (WARN_ON(vendor_event_idx < 0 ||
7133 vendor_event_idx >= wiphy->n_vendor_events))
7134 return NULL;
7135 info = &wiphy->vendor_events[vendor_event_idx];
7136 break;
7137 default:
7138 WARN_ON(1);
7139 return NULL;
7140 }
7141
7142 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7143 cmd, attr, info, gfp);
7144 }
7145 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7146
7147 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7148 {
7149 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7150 void *hdr = ((void **)skb->cb)[1];
7151 struct nlattr *data = ((void **)skb->cb)[2];
7152 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7153
7154 /* clear CB data for netlink core to own from now on */
7155 memset(skb->cb, 0, sizeof(skb->cb));
7156
7157 nla_nest_end(skb, data);
7158 genlmsg_end(skb, hdr);
7159
7160 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7161 mcgrp = NL80211_MCGRP_VENDOR;
7162
7163 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7164 mcgrp, gfp);
7165 }
7166 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7167
7168 #ifdef CONFIG_NL80211_TESTMODE
7169 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7170 {
7171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7172 struct wireless_dev *wdev =
7173 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7174 int err;
7175
7176 if (!rdev->ops->testmode_cmd)
7177 return -EOPNOTSUPP;
7178
7179 if (IS_ERR(wdev)) {
7180 err = PTR_ERR(wdev);
7181 if (err != -EINVAL)
7182 return err;
7183 wdev = NULL;
7184 } else if (wdev->wiphy != &rdev->wiphy) {
7185 return -EINVAL;
7186 }
7187
7188 if (!info->attrs[NL80211_ATTR_TESTDATA])
7189 return -EINVAL;
7190
7191 rdev->cur_cmd_info = info;
7192 err = rdev_testmode_cmd(rdev, wdev,
7193 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7194 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7195 rdev->cur_cmd_info = NULL;
7196
7197 return err;
7198 }
7199
7200 static int nl80211_testmode_dump(struct sk_buff *skb,
7201 struct netlink_callback *cb)
7202 {
7203 struct cfg80211_registered_device *rdev;
7204 int err;
7205 long phy_idx;
7206 void *data = NULL;
7207 int data_len = 0;
7208
7209 rtnl_lock();
7210
7211 if (cb->args[0]) {
7212 /*
7213 * 0 is a valid index, but not valid for args[0],
7214 * so we need to offset by 1.
7215 */
7216 phy_idx = cb->args[0] - 1;
7217 } else {
7218 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7219 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7220 nl80211_policy);
7221 if (err)
7222 goto out_err;
7223
7224 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7225 nl80211_fam.attrbuf);
7226 if (IS_ERR(rdev)) {
7227 err = PTR_ERR(rdev);
7228 goto out_err;
7229 }
7230 phy_idx = rdev->wiphy_idx;
7231 rdev = NULL;
7232
7233 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7234 cb->args[1] =
7235 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7236 }
7237
7238 if (cb->args[1]) {
7239 data = nla_data((void *)cb->args[1]);
7240 data_len = nla_len((void *)cb->args[1]);
7241 }
7242
7243 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7244 if (!rdev) {
7245 err = -ENOENT;
7246 goto out_err;
7247 }
7248
7249 if (!rdev->ops->testmode_dump) {
7250 err = -EOPNOTSUPP;
7251 goto out_err;
7252 }
7253
7254 while (1) {
7255 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7256 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7257 NL80211_CMD_TESTMODE);
7258 struct nlattr *tmdata;
7259
7260 if (!hdr)
7261 break;
7262
7263 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7264 genlmsg_cancel(skb, hdr);
7265 break;
7266 }
7267
7268 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7269 if (!tmdata) {
7270 genlmsg_cancel(skb, hdr);
7271 break;
7272 }
7273 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7274 nla_nest_end(skb, tmdata);
7275
7276 if (err == -ENOBUFS || err == -ENOENT) {
7277 genlmsg_cancel(skb, hdr);
7278 break;
7279 } else if (err) {
7280 genlmsg_cancel(skb, hdr);
7281 goto out_err;
7282 }
7283
7284 genlmsg_end(skb, hdr);
7285 }
7286
7287 err = skb->len;
7288 /* see above */
7289 cb->args[0] = phy_idx + 1;
7290 out_err:
7291 rtnl_unlock();
7292 return err;
7293 }
7294 #endif
7295
7296 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7297 {
7298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7299 struct net_device *dev = info->user_ptr[1];
7300 struct cfg80211_connect_params connect;
7301 struct wiphy *wiphy;
7302 struct cfg80211_cached_keys *connkeys = NULL;
7303 int err;
7304
7305 memset(&connect, 0, sizeof(connect));
7306
7307 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7308 return -EINVAL;
7309
7310 if (!info->attrs[NL80211_ATTR_SSID] ||
7311 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7312 return -EINVAL;
7313
7314 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7315 connect.auth_type =
7316 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7317 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7318 NL80211_CMD_CONNECT))
7319 return -EINVAL;
7320 } else
7321 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7322
7323 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7324
7325 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7326 NL80211_MAX_NR_CIPHER_SUITES);
7327 if (err)
7328 return err;
7329
7330 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7331 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7332 return -EOPNOTSUPP;
7333
7334 wiphy = &rdev->wiphy;
7335
7336 connect.bg_scan_period = -1;
7337 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7338 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7339 connect.bg_scan_period =
7340 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7341 }
7342
7343 if (info->attrs[NL80211_ATTR_MAC])
7344 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7345 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7346 connect.bssid_hint =
7347 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7348 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7349 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7350
7351 if (info->attrs[NL80211_ATTR_IE]) {
7352 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7353 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7354 }
7355
7356 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7357 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7358 if (connect.mfp != NL80211_MFP_REQUIRED &&
7359 connect.mfp != NL80211_MFP_NO)
7360 return -EINVAL;
7361 } else {
7362 connect.mfp = NL80211_MFP_NO;
7363 }
7364
7365 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7366 connect.channel = nl80211_get_valid_chan(
7367 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7368 if (!connect.channel)
7369 return -EINVAL;
7370 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7371 connect.channel_hint = nl80211_get_valid_chan(
7372 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7373 if (!connect.channel_hint)
7374 return -EINVAL;
7375 }
7376
7377 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7378 connkeys = nl80211_parse_connkeys(rdev,
7379 info->attrs[NL80211_ATTR_KEYS], NULL);
7380 if (IS_ERR(connkeys))
7381 return PTR_ERR(connkeys);
7382 }
7383
7384 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7385 connect.flags |= ASSOC_REQ_DISABLE_HT;
7386
7387 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7388 memcpy(&connect.ht_capa_mask,
7389 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7390 sizeof(connect.ht_capa_mask));
7391
7392 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7393 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7394 kzfree(connkeys);
7395 return -EINVAL;
7396 }
7397 memcpy(&connect.ht_capa,
7398 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7399 sizeof(connect.ht_capa));
7400 }
7401
7402 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7403 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7404
7405 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7406 memcpy(&connect.vht_capa_mask,
7407 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7408 sizeof(connect.vht_capa_mask));
7409
7410 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7411 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7412 kzfree(connkeys);
7413 return -EINVAL;
7414 }
7415 memcpy(&connect.vht_capa,
7416 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7417 sizeof(connect.vht_capa));
7418 }
7419
7420 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7421 if (!(rdev->wiphy.features &
7422 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7423 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7424 return -EINVAL;
7425 connect.flags |= ASSOC_REQ_USE_RRM;
7426 }
7427
7428 wdev_lock(dev->ieee80211_ptr);
7429 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7430 wdev_unlock(dev->ieee80211_ptr);
7431 if (err)
7432 kzfree(connkeys);
7433 return err;
7434 }
7435
7436 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7437 {
7438 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7439 struct net_device *dev = info->user_ptr[1];
7440 u16 reason;
7441 int ret;
7442
7443 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7444 reason = WLAN_REASON_DEAUTH_LEAVING;
7445 else
7446 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7447
7448 if (reason == 0)
7449 return -EINVAL;
7450
7451 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7452 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7453 return -EOPNOTSUPP;
7454
7455 wdev_lock(dev->ieee80211_ptr);
7456 ret = cfg80211_disconnect(rdev, dev, reason, true);
7457 wdev_unlock(dev->ieee80211_ptr);
7458 return ret;
7459 }
7460
7461 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7462 {
7463 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7464 struct net *net;
7465 int err;
7466 u32 pid;
7467
7468 if (!info->attrs[NL80211_ATTR_PID])
7469 return -EINVAL;
7470
7471 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7472
7473 net = get_net_ns_by_pid(pid);
7474 if (IS_ERR(net))
7475 return PTR_ERR(net);
7476
7477 err = 0;
7478
7479 /* check if anything to do */
7480 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7481 err = cfg80211_switch_netns(rdev, net);
7482
7483 put_net(net);
7484 return err;
7485 }
7486
7487 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7488 {
7489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7490 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7491 struct cfg80211_pmksa *pmksa) = NULL;
7492 struct net_device *dev = info->user_ptr[1];
7493 struct cfg80211_pmksa pmksa;
7494
7495 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7496
7497 if (!info->attrs[NL80211_ATTR_MAC])
7498 return -EINVAL;
7499
7500 if (!info->attrs[NL80211_ATTR_PMKID])
7501 return -EINVAL;
7502
7503 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7504 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7505
7506 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7507 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7508 return -EOPNOTSUPP;
7509
7510 switch (info->genlhdr->cmd) {
7511 case NL80211_CMD_SET_PMKSA:
7512 rdev_ops = rdev->ops->set_pmksa;
7513 break;
7514 case NL80211_CMD_DEL_PMKSA:
7515 rdev_ops = rdev->ops->del_pmksa;
7516 break;
7517 default:
7518 WARN_ON(1);
7519 break;
7520 }
7521
7522 if (!rdev_ops)
7523 return -EOPNOTSUPP;
7524
7525 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7526 }
7527
7528 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7529 {
7530 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7531 struct net_device *dev = info->user_ptr[1];
7532
7533 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7534 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7535 return -EOPNOTSUPP;
7536
7537 if (!rdev->ops->flush_pmksa)
7538 return -EOPNOTSUPP;
7539
7540 return rdev_flush_pmksa(rdev, dev);
7541 }
7542
7543 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7544 {
7545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7546 struct net_device *dev = info->user_ptr[1];
7547 u8 action_code, dialog_token;
7548 u32 peer_capability = 0;
7549 u16 status_code;
7550 u8 *peer;
7551 bool initiator;
7552
7553 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7554 !rdev->ops->tdls_mgmt)
7555 return -EOPNOTSUPP;
7556
7557 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7558 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7559 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7560 !info->attrs[NL80211_ATTR_IE] ||
7561 !info->attrs[NL80211_ATTR_MAC])
7562 return -EINVAL;
7563
7564 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7565 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7566 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7567 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7568 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7569 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7570 peer_capability =
7571 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7572
7573 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7574 dialog_token, status_code, peer_capability,
7575 initiator,
7576 nla_data(info->attrs[NL80211_ATTR_IE]),
7577 nla_len(info->attrs[NL80211_ATTR_IE]));
7578 }
7579
7580 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7581 {
7582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7583 struct net_device *dev = info->user_ptr[1];
7584 enum nl80211_tdls_operation operation;
7585 u8 *peer;
7586
7587 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7588 !rdev->ops->tdls_oper)
7589 return -EOPNOTSUPP;
7590
7591 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7592 !info->attrs[NL80211_ATTR_MAC])
7593 return -EINVAL;
7594
7595 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7596 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7597
7598 return rdev_tdls_oper(rdev, dev, peer, operation);
7599 }
7600
7601 static int nl80211_remain_on_channel(struct sk_buff *skb,
7602 struct genl_info *info)
7603 {
7604 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7605 struct wireless_dev *wdev = info->user_ptr[1];
7606 struct cfg80211_chan_def chandef;
7607 struct sk_buff *msg;
7608 void *hdr;
7609 u64 cookie;
7610 u32 duration;
7611 int err;
7612
7613 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7614 !info->attrs[NL80211_ATTR_DURATION])
7615 return -EINVAL;
7616
7617 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7618
7619 if (!rdev->ops->remain_on_channel ||
7620 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7621 return -EOPNOTSUPP;
7622
7623 /*
7624 * We should be on that channel for at least a minimum amount of
7625 * time (10ms) but no longer than the driver supports.
7626 */
7627 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7628 duration > rdev->wiphy.max_remain_on_channel_duration)
7629 return -EINVAL;
7630
7631 err = nl80211_parse_chandef(rdev, info, &chandef);
7632 if (err)
7633 return err;
7634
7635 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7636 if (!msg)
7637 return -ENOMEM;
7638
7639 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7640 NL80211_CMD_REMAIN_ON_CHANNEL);
7641 if (!hdr) {
7642 err = -ENOBUFS;
7643 goto free_msg;
7644 }
7645
7646 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7647 duration, &cookie);
7648
7649 if (err)
7650 goto free_msg;
7651
7652 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7653 goto nla_put_failure;
7654
7655 genlmsg_end(msg, hdr);
7656
7657 return genlmsg_reply(msg, info);
7658
7659 nla_put_failure:
7660 err = -ENOBUFS;
7661 free_msg:
7662 nlmsg_free(msg);
7663 return err;
7664 }
7665
7666 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7667 struct genl_info *info)
7668 {
7669 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7670 struct wireless_dev *wdev = info->user_ptr[1];
7671 u64 cookie;
7672
7673 if (!info->attrs[NL80211_ATTR_COOKIE])
7674 return -EINVAL;
7675
7676 if (!rdev->ops->cancel_remain_on_channel)
7677 return -EOPNOTSUPP;
7678
7679 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7680
7681 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7682 }
7683
7684 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7685 u8 *rates, u8 rates_len)
7686 {
7687 u8 i;
7688 u32 mask = 0;
7689
7690 for (i = 0; i < rates_len; i++) {
7691 int rate = (rates[i] & 0x7f) * 5;
7692 int ridx;
7693 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7694 struct ieee80211_rate *srate =
7695 &sband->bitrates[ridx];
7696 if (rate == srate->bitrate) {
7697 mask |= 1 << ridx;
7698 break;
7699 }
7700 }
7701 if (ridx == sband->n_bitrates)
7702 return 0; /* rate not found */
7703 }
7704
7705 return mask;
7706 }
7707
7708 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7709 u8 *rates, u8 rates_len,
7710 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7711 {
7712 u8 i;
7713
7714 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7715
7716 for (i = 0; i < rates_len; i++) {
7717 int ridx, rbit;
7718
7719 ridx = rates[i] / 8;
7720 rbit = BIT(rates[i] % 8);
7721
7722 /* check validity */
7723 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7724 return false;
7725
7726 /* check availability */
7727 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7728 mcs[ridx] |= rbit;
7729 else
7730 return false;
7731 }
7732
7733 return true;
7734 }
7735
7736 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7737 {
7738 u16 mcs_mask = 0;
7739
7740 switch (vht_mcs_map) {
7741 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7742 break;
7743 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7744 mcs_mask = 0x00FF;
7745 break;
7746 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7747 mcs_mask = 0x01FF;
7748 break;
7749 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7750 mcs_mask = 0x03FF;
7751 break;
7752 default:
7753 break;
7754 }
7755
7756 return mcs_mask;
7757 }
7758
7759 static void vht_build_mcs_mask(u16 vht_mcs_map,
7760 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7761 {
7762 u8 nss;
7763
7764 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7765 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7766 vht_mcs_map >>= 2;
7767 }
7768 }
7769
7770 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7771 struct nl80211_txrate_vht *txrate,
7772 u16 mcs[NL80211_VHT_NSS_MAX])
7773 {
7774 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7775 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7776 u8 i;
7777
7778 if (!sband->vht_cap.vht_supported)
7779 return false;
7780
7781 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7782
7783 /* Build vht_mcs_mask from VHT capabilities */
7784 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7785
7786 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7787 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7788 mcs[i] = txrate->mcs[i];
7789 else
7790 return false;
7791 }
7792
7793 return true;
7794 }
7795
7796 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7797 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7798 .len = NL80211_MAX_SUPP_RATES },
7799 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7800 .len = NL80211_MAX_SUPP_HT_RATES },
7801 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7802 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7803 };
7804
7805 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7806 struct genl_info *info)
7807 {
7808 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7810 struct cfg80211_bitrate_mask mask;
7811 int rem, i;
7812 struct net_device *dev = info->user_ptr[1];
7813 struct nlattr *tx_rates;
7814 struct ieee80211_supported_band *sband;
7815 u16 vht_tx_mcs_map;
7816
7817 if (!rdev->ops->set_bitrate_mask)
7818 return -EOPNOTSUPP;
7819
7820 memset(&mask, 0, sizeof(mask));
7821 /* Default to all rates enabled */
7822 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7823 sband = rdev->wiphy.bands[i];
7824
7825 if (!sband)
7826 continue;
7827
7828 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7829 memcpy(mask.control[i].ht_mcs,
7830 sband->ht_cap.mcs.rx_mask,
7831 sizeof(mask.control[i].ht_mcs));
7832
7833 if (!sband->vht_cap.vht_supported)
7834 continue;
7835
7836 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7837 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7838 }
7839
7840 /* if no rates are given set it back to the defaults */
7841 if (!info->attrs[NL80211_ATTR_TX_RATES])
7842 goto out;
7843
7844 /*
7845 * The nested attribute uses enum nl80211_band as the index. This maps
7846 * directly to the enum ieee80211_band values used in cfg80211.
7847 */
7848 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7849 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7850 enum ieee80211_band band = nla_type(tx_rates);
7851 int err;
7852
7853 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7854 return -EINVAL;
7855 sband = rdev->wiphy.bands[band];
7856 if (sband == NULL)
7857 return -EINVAL;
7858 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7859 nla_len(tx_rates), nl80211_txattr_policy);
7860 if (err)
7861 return err;
7862 if (tb[NL80211_TXRATE_LEGACY]) {
7863 mask.control[band].legacy = rateset_to_mask(
7864 sband,
7865 nla_data(tb[NL80211_TXRATE_LEGACY]),
7866 nla_len(tb[NL80211_TXRATE_LEGACY]));
7867 if ((mask.control[band].legacy == 0) &&
7868 nla_len(tb[NL80211_TXRATE_LEGACY]))
7869 return -EINVAL;
7870 }
7871 if (tb[NL80211_TXRATE_HT]) {
7872 if (!ht_rateset_to_mask(
7873 sband,
7874 nla_data(tb[NL80211_TXRATE_HT]),
7875 nla_len(tb[NL80211_TXRATE_HT]),
7876 mask.control[band].ht_mcs))
7877 return -EINVAL;
7878 }
7879 if (tb[NL80211_TXRATE_VHT]) {
7880 if (!vht_set_mcs_mask(
7881 sband,
7882 nla_data(tb[NL80211_TXRATE_VHT]),
7883 mask.control[band].vht_mcs))
7884 return -EINVAL;
7885 }
7886 if (tb[NL80211_TXRATE_GI]) {
7887 mask.control[band].gi =
7888 nla_get_u8(tb[NL80211_TXRATE_GI]);
7889 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7890 return -EINVAL;
7891 }
7892
7893 if (mask.control[band].legacy == 0) {
7894 /* don't allow empty legacy rates if HT or VHT
7895 * are not even supported.
7896 */
7897 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7898 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7899 return -EINVAL;
7900
7901 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7902 if (mask.control[band].ht_mcs[i])
7903 goto out;
7904
7905 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7906 if (mask.control[band].vht_mcs[i])
7907 goto out;
7908
7909 /* legacy and mcs rates may not be both empty */
7910 return -EINVAL;
7911 }
7912 }
7913
7914 out:
7915 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7916 }
7917
7918 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7919 {
7920 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7921 struct wireless_dev *wdev = info->user_ptr[1];
7922 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7923
7924 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7925 return -EINVAL;
7926
7927 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7928 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7929
7930 switch (wdev->iftype) {
7931 case NL80211_IFTYPE_STATION:
7932 case NL80211_IFTYPE_ADHOC:
7933 case NL80211_IFTYPE_P2P_CLIENT:
7934 case NL80211_IFTYPE_AP:
7935 case NL80211_IFTYPE_AP_VLAN:
7936 case NL80211_IFTYPE_MESH_POINT:
7937 case NL80211_IFTYPE_P2P_GO:
7938 case NL80211_IFTYPE_P2P_DEVICE:
7939 break;
7940 default:
7941 return -EOPNOTSUPP;
7942 }
7943
7944 /* not much point in registering if we can't reply */
7945 if (!rdev->ops->mgmt_tx)
7946 return -EOPNOTSUPP;
7947
7948 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7949 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7950 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7951 }
7952
7953 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7954 {
7955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7956 struct wireless_dev *wdev = info->user_ptr[1];
7957 struct cfg80211_chan_def chandef;
7958 int err;
7959 void *hdr = NULL;
7960 u64 cookie;
7961 struct sk_buff *msg = NULL;
7962 struct cfg80211_mgmt_tx_params params = {
7963 .dont_wait_for_ack =
7964 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7965 };
7966
7967 if (!info->attrs[NL80211_ATTR_FRAME])
7968 return -EINVAL;
7969
7970 if (!rdev->ops->mgmt_tx)
7971 return -EOPNOTSUPP;
7972
7973 switch (wdev->iftype) {
7974 case NL80211_IFTYPE_P2P_DEVICE:
7975 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7976 return -EINVAL;
7977 case NL80211_IFTYPE_STATION:
7978 case NL80211_IFTYPE_ADHOC:
7979 case NL80211_IFTYPE_P2P_CLIENT:
7980 case NL80211_IFTYPE_AP:
7981 case NL80211_IFTYPE_AP_VLAN:
7982 case NL80211_IFTYPE_MESH_POINT:
7983 case NL80211_IFTYPE_P2P_GO:
7984 break;
7985 default:
7986 return -EOPNOTSUPP;
7987 }
7988
7989 if (info->attrs[NL80211_ATTR_DURATION]) {
7990 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7991 return -EINVAL;
7992 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7993
7994 /*
7995 * We should wait on the channel for at least a minimum amount
7996 * of time (10ms) but no longer than the driver supports.
7997 */
7998 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7999 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8000 return -EINVAL;
8001
8002 }
8003
8004 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8005
8006 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8007 return -EINVAL;
8008
8009 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8010
8011 /* get the channel if any has been specified, otherwise pass NULL to
8012 * the driver. The latter will use the current one
8013 */
8014 chandef.chan = NULL;
8015 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8016 err = nl80211_parse_chandef(rdev, info, &chandef);
8017 if (err)
8018 return err;
8019 }
8020
8021 if (!chandef.chan && params.offchan)
8022 return -EINVAL;
8023
8024 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8025 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8026
8027 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8028 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8029 int i;
8030
8031 if (len % sizeof(u16))
8032 return -EINVAL;
8033
8034 params.n_csa_offsets = len / sizeof(u16);
8035 params.csa_offsets =
8036 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8037
8038 /* check that all the offsets fit the frame */
8039 for (i = 0; i < params.n_csa_offsets; i++) {
8040 if (params.csa_offsets[i] >= params.len)
8041 return -EINVAL;
8042 }
8043 }
8044
8045 if (!params.dont_wait_for_ack) {
8046 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8047 if (!msg)
8048 return -ENOMEM;
8049
8050 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8051 NL80211_CMD_FRAME);
8052 if (!hdr) {
8053 err = -ENOBUFS;
8054 goto free_msg;
8055 }
8056 }
8057
8058 params.chan = chandef.chan;
8059 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8060 if (err)
8061 goto free_msg;
8062
8063 if (msg) {
8064 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8065 goto nla_put_failure;
8066
8067 genlmsg_end(msg, hdr);
8068 return genlmsg_reply(msg, info);
8069 }
8070
8071 return 0;
8072
8073 nla_put_failure:
8074 err = -ENOBUFS;
8075 free_msg:
8076 nlmsg_free(msg);
8077 return err;
8078 }
8079
8080 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8081 {
8082 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8083 struct wireless_dev *wdev = info->user_ptr[1];
8084 u64 cookie;
8085
8086 if (!info->attrs[NL80211_ATTR_COOKIE])
8087 return -EINVAL;
8088
8089 if (!rdev->ops->mgmt_tx_cancel_wait)
8090 return -EOPNOTSUPP;
8091
8092 switch (wdev->iftype) {
8093 case NL80211_IFTYPE_STATION:
8094 case NL80211_IFTYPE_ADHOC:
8095 case NL80211_IFTYPE_P2P_CLIENT:
8096 case NL80211_IFTYPE_AP:
8097 case NL80211_IFTYPE_AP_VLAN:
8098 case NL80211_IFTYPE_P2P_GO:
8099 case NL80211_IFTYPE_P2P_DEVICE:
8100 break;
8101 default:
8102 return -EOPNOTSUPP;
8103 }
8104
8105 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8106
8107 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8108 }
8109
8110 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8111 {
8112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8113 struct wireless_dev *wdev;
8114 struct net_device *dev = info->user_ptr[1];
8115 u8 ps_state;
8116 bool state;
8117 int err;
8118
8119 if (!info->attrs[NL80211_ATTR_PS_STATE])
8120 return -EINVAL;
8121
8122 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8123
8124 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8125 return -EINVAL;
8126
8127 wdev = dev->ieee80211_ptr;
8128
8129 if (!rdev->ops->set_power_mgmt)
8130 return -EOPNOTSUPP;
8131
8132 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8133
8134 if (state == wdev->ps)
8135 return 0;
8136
8137 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8138 if (!err)
8139 wdev->ps = state;
8140 return err;
8141 }
8142
8143 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8144 {
8145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8146 enum nl80211_ps_state ps_state;
8147 struct wireless_dev *wdev;
8148 struct net_device *dev = info->user_ptr[1];
8149 struct sk_buff *msg;
8150 void *hdr;
8151 int err;
8152
8153 wdev = dev->ieee80211_ptr;
8154
8155 if (!rdev->ops->set_power_mgmt)
8156 return -EOPNOTSUPP;
8157
8158 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8159 if (!msg)
8160 return -ENOMEM;
8161
8162 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8163 NL80211_CMD_GET_POWER_SAVE);
8164 if (!hdr) {
8165 err = -ENOBUFS;
8166 goto free_msg;
8167 }
8168
8169 if (wdev->ps)
8170 ps_state = NL80211_PS_ENABLED;
8171 else
8172 ps_state = NL80211_PS_DISABLED;
8173
8174 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8175 goto nla_put_failure;
8176
8177 genlmsg_end(msg, hdr);
8178 return genlmsg_reply(msg, info);
8179
8180 nla_put_failure:
8181 err = -ENOBUFS;
8182 free_msg:
8183 nlmsg_free(msg);
8184 return err;
8185 }
8186
8187 static const struct nla_policy
8188 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8189 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8190 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8191 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8192 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8193 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8194 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8195 };
8196
8197 static int nl80211_set_cqm_txe(struct genl_info *info,
8198 u32 rate, u32 pkts, u32 intvl)
8199 {
8200 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8201 struct net_device *dev = info->user_ptr[1];
8202 struct wireless_dev *wdev = dev->ieee80211_ptr;
8203
8204 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8205 return -EINVAL;
8206
8207 if (!rdev->ops->set_cqm_txe_config)
8208 return -EOPNOTSUPP;
8209
8210 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8211 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8212 return -EOPNOTSUPP;
8213
8214 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8215 }
8216
8217 static int nl80211_set_cqm_rssi(struct genl_info *info,
8218 s32 threshold, u32 hysteresis)
8219 {
8220 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8221 struct net_device *dev = info->user_ptr[1];
8222 struct wireless_dev *wdev = dev->ieee80211_ptr;
8223
8224 if (threshold > 0)
8225 return -EINVAL;
8226
8227 /* disabling - hysteresis should also be zero then */
8228 if (threshold == 0)
8229 hysteresis = 0;
8230
8231 if (!rdev->ops->set_cqm_rssi_config)
8232 return -EOPNOTSUPP;
8233
8234 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8235 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8236 return -EOPNOTSUPP;
8237
8238 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8239 }
8240
8241 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8242 {
8243 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8244 struct nlattr *cqm;
8245 int err;
8246
8247 cqm = info->attrs[NL80211_ATTR_CQM];
8248 if (!cqm)
8249 return -EINVAL;
8250
8251 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8252 nl80211_attr_cqm_policy);
8253 if (err)
8254 return err;
8255
8256 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8257 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8258 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8259 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8260
8261 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8262 }
8263
8264 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8265 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8266 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8267 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8268 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8269 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8270
8271 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8272 }
8273
8274 return -EINVAL;
8275 }
8276
8277 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8278 {
8279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8280 struct net_device *dev = info->user_ptr[1];
8281 struct mesh_config cfg;
8282 struct mesh_setup setup;
8283 int err;
8284
8285 /* start with default */
8286 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8287 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8288
8289 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8290 /* and parse parameters if given */
8291 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8292 if (err)
8293 return err;
8294 }
8295
8296 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8297 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8298 return -EINVAL;
8299
8300 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8301 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8302
8303 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8304 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8305 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8306 return -EINVAL;
8307
8308 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8309 setup.beacon_interval =
8310 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8311 if (setup.beacon_interval < 10 ||
8312 setup.beacon_interval > 10000)
8313 return -EINVAL;
8314 }
8315
8316 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8317 setup.dtim_period =
8318 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8319 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8320 return -EINVAL;
8321 }
8322
8323 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8324 /* parse additional setup parameters if given */
8325 err = nl80211_parse_mesh_setup(info, &setup);
8326 if (err)
8327 return err;
8328 }
8329
8330 if (setup.user_mpm)
8331 cfg.auto_open_plinks = false;
8332
8333 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8334 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8335 if (err)
8336 return err;
8337 } else {
8338 /* cfg80211_join_mesh() will sort it out */
8339 setup.chandef.chan = NULL;
8340 }
8341
8342 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8343 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8344 int n_rates =
8345 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8346 struct ieee80211_supported_band *sband;
8347
8348 if (!setup.chandef.chan)
8349 return -EINVAL;
8350
8351 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8352
8353 err = ieee80211_get_ratemask(sband, rates, n_rates,
8354 &setup.basic_rates);
8355 if (err)
8356 return err;
8357 }
8358
8359 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8360 }
8361
8362 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8363 {
8364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8365 struct net_device *dev = info->user_ptr[1];
8366
8367 return cfg80211_leave_mesh(rdev, dev);
8368 }
8369
8370 #ifdef CONFIG_PM
8371 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8372 struct cfg80211_registered_device *rdev)
8373 {
8374 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8375 struct nlattr *nl_pats, *nl_pat;
8376 int i, pat_len;
8377
8378 if (!wowlan->n_patterns)
8379 return 0;
8380
8381 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8382 if (!nl_pats)
8383 return -ENOBUFS;
8384
8385 for (i = 0; i < wowlan->n_patterns; i++) {
8386 nl_pat = nla_nest_start(msg, i + 1);
8387 if (!nl_pat)
8388 return -ENOBUFS;
8389 pat_len = wowlan->patterns[i].pattern_len;
8390 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8391 wowlan->patterns[i].mask) ||
8392 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8393 wowlan->patterns[i].pattern) ||
8394 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8395 wowlan->patterns[i].pkt_offset))
8396 return -ENOBUFS;
8397 nla_nest_end(msg, nl_pat);
8398 }
8399 nla_nest_end(msg, nl_pats);
8400
8401 return 0;
8402 }
8403
8404 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8405 struct cfg80211_wowlan_tcp *tcp)
8406 {
8407 struct nlattr *nl_tcp;
8408
8409 if (!tcp)
8410 return 0;
8411
8412 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8413 if (!nl_tcp)
8414 return -ENOBUFS;
8415
8416 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8417 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8418 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8419 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8420 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8421 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8422 tcp->payload_len, tcp->payload) ||
8423 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8424 tcp->data_interval) ||
8425 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8426 tcp->wake_len, tcp->wake_data) ||
8427 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8428 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8429 return -ENOBUFS;
8430
8431 if (tcp->payload_seq.len &&
8432 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8433 sizeof(tcp->payload_seq), &tcp->payload_seq))
8434 return -ENOBUFS;
8435
8436 if (tcp->payload_tok.len &&
8437 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8438 sizeof(tcp->payload_tok) + tcp->tokens_size,
8439 &tcp->payload_tok))
8440 return -ENOBUFS;
8441
8442 nla_nest_end(msg, nl_tcp);
8443
8444 return 0;
8445 }
8446
8447 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8448 {
8449 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8450 struct sk_buff *msg;
8451 void *hdr;
8452 u32 size = NLMSG_DEFAULT_SIZE;
8453
8454 if (!rdev->wiphy.wowlan)
8455 return -EOPNOTSUPP;
8456
8457 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8458 /* adjust size to have room for all the data */
8459 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8460 rdev->wiphy.wowlan_config->tcp->payload_len +
8461 rdev->wiphy.wowlan_config->tcp->wake_len +
8462 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8463 }
8464
8465 msg = nlmsg_new(size, GFP_KERNEL);
8466 if (!msg)
8467 return -ENOMEM;
8468
8469 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8470 NL80211_CMD_GET_WOWLAN);
8471 if (!hdr)
8472 goto nla_put_failure;
8473
8474 if (rdev->wiphy.wowlan_config) {
8475 struct nlattr *nl_wowlan;
8476
8477 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8478 if (!nl_wowlan)
8479 goto nla_put_failure;
8480
8481 if ((rdev->wiphy.wowlan_config->any &&
8482 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8483 (rdev->wiphy.wowlan_config->disconnect &&
8484 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8485 (rdev->wiphy.wowlan_config->magic_pkt &&
8486 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8487 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8488 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8489 (rdev->wiphy.wowlan_config->eap_identity_req &&
8490 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8491 (rdev->wiphy.wowlan_config->four_way_handshake &&
8492 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8493 (rdev->wiphy.wowlan_config->rfkill_release &&
8494 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8495 goto nla_put_failure;
8496
8497 if (nl80211_send_wowlan_patterns(msg, rdev))
8498 goto nla_put_failure;
8499
8500 if (nl80211_send_wowlan_tcp(msg,
8501 rdev->wiphy.wowlan_config->tcp))
8502 goto nla_put_failure;
8503
8504 nla_nest_end(msg, nl_wowlan);
8505 }
8506
8507 genlmsg_end(msg, hdr);
8508 return genlmsg_reply(msg, info);
8509
8510 nla_put_failure:
8511 nlmsg_free(msg);
8512 return -ENOBUFS;
8513 }
8514
8515 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8516 struct nlattr *attr,
8517 struct cfg80211_wowlan *trig)
8518 {
8519 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8520 struct cfg80211_wowlan_tcp *cfg;
8521 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8522 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8523 u32 size;
8524 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8525 int err, port;
8526
8527 if (!rdev->wiphy.wowlan->tcp)
8528 return -EINVAL;
8529
8530 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8531 nla_data(attr), nla_len(attr),
8532 nl80211_wowlan_tcp_policy);
8533 if (err)
8534 return err;
8535
8536 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8537 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8538 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8539 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8540 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8541 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8542 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8543 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8544 return -EINVAL;
8545
8546 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8547 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8548 return -EINVAL;
8549
8550 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8551 rdev->wiphy.wowlan->tcp->data_interval_max ||
8552 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8553 return -EINVAL;
8554
8555 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8556 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8557 return -EINVAL;
8558
8559 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8560 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8561 return -EINVAL;
8562
8563 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8564 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8565
8566 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8567 tokens_size = tokln - sizeof(*tok);
8568
8569 if (!tok->len || tokens_size % tok->len)
8570 return -EINVAL;
8571 if (!rdev->wiphy.wowlan->tcp->tok)
8572 return -EINVAL;
8573 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8574 return -EINVAL;
8575 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8576 return -EINVAL;
8577 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8578 return -EINVAL;
8579 if (tok->offset + tok->len > data_size)
8580 return -EINVAL;
8581 }
8582
8583 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8584 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8585 if (!rdev->wiphy.wowlan->tcp->seq)
8586 return -EINVAL;
8587 if (seq->len == 0 || seq->len > 4)
8588 return -EINVAL;
8589 if (seq->len + seq->offset > data_size)
8590 return -EINVAL;
8591 }
8592
8593 size = sizeof(*cfg);
8594 size += data_size;
8595 size += wake_size + wake_mask_size;
8596 size += tokens_size;
8597
8598 cfg = kzalloc(size, GFP_KERNEL);
8599 if (!cfg)
8600 return -ENOMEM;
8601 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8602 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8603 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8604 ETH_ALEN);
8605 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8606 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8607 else
8608 port = 0;
8609 #ifdef CONFIG_INET
8610 /* allocate a socket and port for it and use it */
8611 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8612 IPPROTO_TCP, &cfg->sock, 1);
8613 if (err) {
8614 kfree(cfg);
8615 return err;
8616 }
8617 if (inet_csk_get_port(cfg->sock->sk, port)) {
8618 sock_release(cfg->sock);
8619 kfree(cfg);
8620 return -EADDRINUSE;
8621 }
8622 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8623 #else
8624 if (!port) {
8625 kfree(cfg);
8626 return -EINVAL;
8627 }
8628 cfg->src_port = port;
8629 #endif
8630
8631 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8632 cfg->payload_len = data_size;
8633 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8634 memcpy((void *)cfg->payload,
8635 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8636 data_size);
8637 if (seq)
8638 cfg->payload_seq = *seq;
8639 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8640 cfg->wake_len = wake_size;
8641 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8642 memcpy((void *)cfg->wake_data,
8643 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8644 wake_size);
8645 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8646 data_size + wake_size;
8647 memcpy((void *)cfg->wake_mask,
8648 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8649 wake_mask_size);
8650 if (tok) {
8651 cfg->tokens_size = tokens_size;
8652 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8653 }
8654
8655 trig->tcp = cfg;
8656
8657 return 0;
8658 }
8659
8660 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8661 {
8662 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8663 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8664 struct cfg80211_wowlan new_triggers = {};
8665 struct cfg80211_wowlan *ntrig;
8666 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8667 int err, i;
8668 bool prev_enabled = rdev->wiphy.wowlan_config;
8669
8670 if (!wowlan)
8671 return -EOPNOTSUPP;
8672
8673 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8674 cfg80211_rdev_free_wowlan(rdev);
8675 rdev->wiphy.wowlan_config = NULL;
8676 goto set_wakeup;
8677 }
8678
8679 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8680 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8681 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8682 nl80211_wowlan_policy);
8683 if (err)
8684 return err;
8685
8686 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8687 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8688 return -EINVAL;
8689 new_triggers.any = true;
8690 }
8691
8692 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8693 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8694 return -EINVAL;
8695 new_triggers.disconnect = true;
8696 }
8697
8698 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8699 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8700 return -EINVAL;
8701 new_triggers.magic_pkt = true;
8702 }
8703
8704 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8705 return -EINVAL;
8706
8707 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8708 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8709 return -EINVAL;
8710 new_triggers.gtk_rekey_failure = true;
8711 }
8712
8713 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8714 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8715 return -EINVAL;
8716 new_triggers.eap_identity_req = true;
8717 }
8718
8719 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8720 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8721 return -EINVAL;
8722 new_triggers.four_way_handshake = true;
8723 }
8724
8725 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8726 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8727 return -EINVAL;
8728 new_triggers.rfkill_release = true;
8729 }
8730
8731 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8732 struct nlattr *pat;
8733 int n_patterns = 0;
8734 int rem, pat_len, mask_len, pkt_offset;
8735 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8736
8737 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8738 rem)
8739 n_patterns++;
8740 if (n_patterns > wowlan->n_patterns)
8741 return -EINVAL;
8742
8743 new_triggers.patterns = kcalloc(n_patterns,
8744 sizeof(new_triggers.patterns[0]),
8745 GFP_KERNEL);
8746 if (!new_triggers.patterns)
8747 return -ENOMEM;
8748
8749 new_triggers.n_patterns = n_patterns;
8750 i = 0;
8751
8752 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8753 rem) {
8754 u8 *mask_pat;
8755
8756 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8757 nla_len(pat), NULL);
8758 err = -EINVAL;
8759 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8760 !pat_tb[NL80211_PKTPAT_PATTERN])
8761 goto error;
8762 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8763 mask_len = DIV_ROUND_UP(pat_len, 8);
8764 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8765 goto error;
8766 if (pat_len > wowlan->pattern_max_len ||
8767 pat_len < wowlan->pattern_min_len)
8768 goto error;
8769
8770 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8771 pkt_offset = 0;
8772 else
8773 pkt_offset = nla_get_u32(
8774 pat_tb[NL80211_PKTPAT_OFFSET]);
8775 if (pkt_offset > wowlan->max_pkt_offset)
8776 goto error;
8777 new_triggers.patterns[i].pkt_offset = pkt_offset;
8778
8779 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8780 if (!mask_pat) {
8781 err = -ENOMEM;
8782 goto error;
8783 }
8784 new_triggers.patterns[i].mask = mask_pat;
8785 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8786 mask_len);
8787 mask_pat += mask_len;
8788 new_triggers.patterns[i].pattern = mask_pat;
8789 new_triggers.patterns[i].pattern_len = pat_len;
8790 memcpy(mask_pat,
8791 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8792 pat_len);
8793 i++;
8794 }
8795 }
8796
8797 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8798 err = nl80211_parse_wowlan_tcp(
8799 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8800 &new_triggers);
8801 if (err)
8802 goto error;
8803 }
8804
8805 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8806 if (!ntrig) {
8807 err = -ENOMEM;
8808 goto error;
8809 }
8810 cfg80211_rdev_free_wowlan(rdev);
8811 rdev->wiphy.wowlan_config = ntrig;
8812
8813 set_wakeup:
8814 if (rdev->ops->set_wakeup &&
8815 prev_enabled != !!rdev->wiphy.wowlan_config)
8816 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8817
8818 return 0;
8819 error:
8820 for (i = 0; i < new_triggers.n_patterns; i++)
8821 kfree(new_triggers.patterns[i].mask);
8822 kfree(new_triggers.patterns);
8823 if (new_triggers.tcp && new_triggers.tcp->sock)
8824 sock_release(new_triggers.tcp->sock);
8825 kfree(new_triggers.tcp);
8826 return err;
8827 }
8828 #endif
8829
8830 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8831 struct cfg80211_registered_device *rdev)
8832 {
8833 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8834 int i, j, pat_len;
8835 struct cfg80211_coalesce_rules *rule;
8836
8837 if (!rdev->coalesce->n_rules)
8838 return 0;
8839
8840 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8841 if (!nl_rules)
8842 return -ENOBUFS;
8843
8844 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8845 nl_rule = nla_nest_start(msg, i + 1);
8846 if (!nl_rule)
8847 return -ENOBUFS;
8848
8849 rule = &rdev->coalesce->rules[i];
8850 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8851 rule->delay))
8852 return -ENOBUFS;
8853
8854 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8855 rule->condition))
8856 return -ENOBUFS;
8857
8858 nl_pats = nla_nest_start(msg,
8859 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8860 if (!nl_pats)
8861 return -ENOBUFS;
8862
8863 for (j = 0; j < rule->n_patterns; j++) {
8864 nl_pat = nla_nest_start(msg, j + 1);
8865 if (!nl_pat)
8866 return -ENOBUFS;
8867 pat_len = rule->patterns[j].pattern_len;
8868 if (nla_put(msg, NL80211_PKTPAT_MASK,
8869 DIV_ROUND_UP(pat_len, 8),
8870 rule->patterns[j].mask) ||
8871 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8872 rule->patterns[j].pattern) ||
8873 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8874 rule->patterns[j].pkt_offset))
8875 return -ENOBUFS;
8876 nla_nest_end(msg, nl_pat);
8877 }
8878 nla_nest_end(msg, nl_pats);
8879 nla_nest_end(msg, nl_rule);
8880 }
8881 nla_nest_end(msg, nl_rules);
8882
8883 return 0;
8884 }
8885
8886 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8887 {
8888 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8889 struct sk_buff *msg;
8890 void *hdr;
8891
8892 if (!rdev->wiphy.coalesce)
8893 return -EOPNOTSUPP;
8894
8895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8896 if (!msg)
8897 return -ENOMEM;
8898
8899 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8900 NL80211_CMD_GET_COALESCE);
8901 if (!hdr)
8902 goto nla_put_failure;
8903
8904 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8905 goto nla_put_failure;
8906
8907 genlmsg_end(msg, hdr);
8908 return genlmsg_reply(msg, info);
8909
8910 nla_put_failure:
8911 nlmsg_free(msg);
8912 return -ENOBUFS;
8913 }
8914
8915 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8916 {
8917 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8918 int i, j;
8919 struct cfg80211_coalesce_rules *rule;
8920
8921 if (!coalesce)
8922 return;
8923
8924 for (i = 0; i < coalesce->n_rules; i++) {
8925 rule = &coalesce->rules[i];
8926 for (j = 0; j < rule->n_patterns; j++)
8927 kfree(rule->patterns[j].mask);
8928 kfree(rule->patterns);
8929 }
8930 kfree(coalesce->rules);
8931 kfree(coalesce);
8932 rdev->coalesce = NULL;
8933 }
8934
8935 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8936 struct nlattr *rule,
8937 struct cfg80211_coalesce_rules *new_rule)
8938 {
8939 int err, i;
8940 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8941 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8942 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8943 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8944
8945 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8946 nla_len(rule), nl80211_coalesce_policy);
8947 if (err)
8948 return err;
8949
8950 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8951 new_rule->delay =
8952 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8953 if (new_rule->delay > coalesce->max_delay)
8954 return -EINVAL;
8955
8956 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8957 new_rule->condition =
8958 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8959 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8960 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8961 return -EINVAL;
8962
8963 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8964 return -EINVAL;
8965
8966 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8967 rem)
8968 n_patterns++;
8969 if (n_patterns > coalesce->n_patterns)
8970 return -EINVAL;
8971
8972 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8973 GFP_KERNEL);
8974 if (!new_rule->patterns)
8975 return -ENOMEM;
8976
8977 new_rule->n_patterns = n_patterns;
8978 i = 0;
8979
8980 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8981 rem) {
8982 u8 *mask_pat;
8983
8984 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8985 nla_len(pat), NULL);
8986 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8987 !pat_tb[NL80211_PKTPAT_PATTERN])
8988 return -EINVAL;
8989 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8990 mask_len = DIV_ROUND_UP(pat_len, 8);
8991 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8992 return -EINVAL;
8993 if (pat_len > coalesce->pattern_max_len ||
8994 pat_len < coalesce->pattern_min_len)
8995 return -EINVAL;
8996
8997 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8998 pkt_offset = 0;
8999 else
9000 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9001 if (pkt_offset > coalesce->max_pkt_offset)
9002 return -EINVAL;
9003 new_rule->patterns[i].pkt_offset = pkt_offset;
9004
9005 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9006 if (!mask_pat)
9007 return -ENOMEM;
9008
9009 new_rule->patterns[i].mask = mask_pat;
9010 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9011 mask_len);
9012
9013 mask_pat += mask_len;
9014 new_rule->patterns[i].pattern = mask_pat;
9015 new_rule->patterns[i].pattern_len = pat_len;
9016 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9017 pat_len);
9018 i++;
9019 }
9020
9021 return 0;
9022 }
9023
9024 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9025 {
9026 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9027 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9028 struct cfg80211_coalesce new_coalesce = {};
9029 struct cfg80211_coalesce *n_coalesce;
9030 int err, rem_rule, n_rules = 0, i, j;
9031 struct nlattr *rule;
9032 struct cfg80211_coalesce_rules *tmp_rule;
9033
9034 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9035 return -EOPNOTSUPP;
9036
9037 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9038 cfg80211_rdev_free_coalesce(rdev);
9039 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9040 return 0;
9041 }
9042
9043 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9044 rem_rule)
9045 n_rules++;
9046 if (n_rules > coalesce->n_rules)
9047 return -EINVAL;
9048
9049 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9050 GFP_KERNEL);
9051 if (!new_coalesce.rules)
9052 return -ENOMEM;
9053
9054 new_coalesce.n_rules = n_rules;
9055 i = 0;
9056
9057 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9058 rem_rule) {
9059 err = nl80211_parse_coalesce_rule(rdev, rule,
9060 &new_coalesce.rules[i]);
9061 if (err)
9062 goto error;
9063
9064 i++;
9065 }
9066
9067 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9068 if (err)
9069 goto error;
9070
9071 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9072 if (!n_coalesce) {
9073 err = -ENOMEM;
9074 goto error;
9075 }
9076 cfg80211_rdev_free_coalesce(rdev);
9077 rdev->coalesce = n_coalesce;
9078
9079 return 0;
9080 error:
9081 for (i = 0; i < new_coalesce.n_rules; i++) {
9082 tmp_rule = &new_coalesce.rules[i];
9083 for (j = 0; j < tmp_rule->n_patterns; j++)
9084 kfree(tmp_rule->patterns[j].mask);
9085 kfree(tmp_rule->patterns);
9086 }
9087 kfree(new_coalesce.rules);
9088
9089 return err;
9090 }
9091
9092 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9093 {
9094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9095 struct net_device *dev = info->user_ptr[1];
9096 struct wireless_dev *wdev = dev->ieee80211_ptr;
9097 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9098 struct cfg80211_gtk_rekey_data rekey_data;
9099 int err;
9100
9101 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9102 return -EINVAL;
9103
9104 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9105 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9106 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9107 nl80211_rekey_policy);
9108 if (err)
9109 return err;
9110
9111 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9112 return -ERANGE;
9113 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9114 return -ERANGE;
9115 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9116 return -ERANGE;
9117
9118 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9119 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9120 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9121
9122 wdev_lock(wdev);
9123 if (!wdev->current_bss) {
9124 err = -ENOTCONN;
9125 goto out;
9126 }
9127
9128 if (!rdev->ops->set_rekey_data) {
9129 err = -EOPNOTSUPP;
9130 goto out;
9131 }
9132
9133 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9134 out:
9135 wdev_unlock(wdev);
9136 return err;
9137 }
9138
9139 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9140 struct genl_info *info)
9141 {
9142 struct net_device *dev = info->user_ptr[1];
9143 struct wireless_dev *wdev = dev->ieee80211_ptr;
9144
9145 if (wdev->iftype != NL80211_IFTYPE_AP &&
9146 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9147 return -EINVAL;
9148
9149 if (wdev->ap_unexpected_nlportid)
9150 return -EBUSY;
9151
9152 wdev->ap_unexpected_nlportid = info->snd_portid;
9153 return 0;
9154 }
9155
9156 static int nl80211_probe_client(struct sk_buff *skb,
9157 struct genl_info *info)
9158 {
9159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9160 struct net_device *dev = info->user_ptr[1];
9161 struct wireless_dev *wdev = dev->ieee80211_ptr;
9162 struct sk_buff *msg;
9163 void *hdr;
9164 const u8 *addr;
9165 u64 cookie;
9166 int err;
9167
9168 if (wdev->iftype != NL80211_IFTYPE_AP &&
9169 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9170 return -EOPNOTSUPP;
9171
9172 if (!info->attrs[NL80211_ATTR_MAC])
9173 return -EINVAL;
9174
9175 if (!rdev->ops->probe_client)
9176 return -EOPNOTSUPP;
9177
9178 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9179 if (!msg)
9180 return -ENOMEM;
9181
9182 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9183 NL80211_CMD_PROBE_CLIENT);
9184 if (!hdr) {
9185 err = -ENOBUFS;
9186 goto free_msg;
9187 }
9188
9189 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9190
9191 err = rdev_probe_client(rdev, dev, addr, &cookie);
9192 if (err)
9193 goto free_msg;
9194
9195 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9196 goto nla_put_failure;
9197
9198 genlmsg_end(msg, hdr);
9199
9200 return genlmsg_reply(msg, info);
9201
9202 nla_put_failure:
9203 err = -ENOBUFS;
9204 free_msg:
9205 nlmsg_free(msg);
9206 return err;
9207 }
9208
9209 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9210 {
9211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9212 struct cfg80211_beacon_registration *reg, *nreg;
9213 int rv;
9214
9215 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9216 return -EOPNOTSUPP;
9217
9218 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9219 if (!nreg)
9220 return -ENOMEM;
9221
9222 /* First, check if already registered. */
9223 spin_lock_bh(&rdev->beacon_registrations_lock);
9224 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9225 if (reg->nlportid == info->snd_portid) {
9226 rv = -EALREADY;
9227 goto out_err;
9228 }
9229 }
9230 /* Add it to the list */
9231 nreg->nlportid = info->snd_portid;
9232 list_add(&nreg->list, &rdev->beacon_registrations);
9233
9234 spin_unlock_bh(&rdev->beacon_registrations_lock);
9235
9236 return 0;
9237 out_err:
9238 spin_unlock_bh(&rdev->beacon_registrations_lock);
9239 kfree(nreg);
9240 return rv;
9241 }
9242
9243 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9244 {
9245 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9246 struct wireless_dev *wdev = info->user_ptr[1];
9247 int err;
9248
9249 if (!rdev->ops->start_p2p_device)
9250 return -EOPNOTSUPP;
9251
9252 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9253 return -EOPNOTSUPP;
9254
9255 if (wdev->p2p_started)
9256 return 0;
9257
9258 if (rfkill_blocked(rdev->rfkill))
9259 return -ERFKILL;
9260
9261 err = rdev_start_p2p_device(rdev, wdev);
9262 if (err)
9263 return err;
9264
9265 wdev->p2p_started = true;
9266 rdev->opencount++;
9267
9268 return 0;
9269 }
9270
9271 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9272 {
9273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9274 struct wireless_dev *wdev = info->user_ptr[1];
9275
9276 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9277 return -EOPNOTSUPP;
9278
9279 if (!rdev->ops->stop_p2p_device)
9280 return -EOPNOTSUPP;
9281
9282 cfg80211_stop_p2p_device(rdev, wdev);
9283
9284 return 0;
9285 }
9286
9287 static int nl80211_get_protocol_features(struct sk_buff *skb,
9288 struct genl_info *info)
9289 {
9290 void *hdr;
9291 struct sk_buff *msg;
9292
9293 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9294 if (!msg)
9295 return -ENOMEM;
9296
9297 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9298 NL80211_CMD_GET_PROTOCOL_FEATURES);
9299 if (!hdr)
9300 goto nla_put_failure;
9301
9302 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9303 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9304 goto nla_put_failure;
9305
9306 genlmsg_end(msg, hdr);
9307 return genlmsg_reply(msg, info);
9308
9309 nla_put_failure:
9310 kfree_skb(msg);
9311 return -ENOBUFS;
9312 }
9313
9314 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9315 {
9316 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9317 struct cfg80211_update_ft_ies_params ft_params;
9318 struct net_device *dev = info->user_ptr[1];
9319
9320 if (!rdev->ops->update_ft_ies)
9321 return -EOPNOTSUPP;
9322
9323 if (!info->attrs[NL80211_ATTR_MDID] ||
9324 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9325 return -EINVAL;
9326
9327 memset(&ft_params, 0, sizeof(ft_params));
9328 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9329 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9330 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9331
9332 return rdev_update_ft_ies(rdev, dev, &ft_params);
9333 }
9334
9335 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9336 struct genl_info *info)
9337 {
9338 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9339 struct wireless_dev *wdev = info->user_ptr[1];
9340 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9341 u16 duration;
9342 int ret;
9343
9344 if (!rdev->ops->crit_proto_start)
9345 return -EOPNOTSUPP;
9346
9347 if (WARN_ON(!rdev->ops->crit_proto_stop))
9348 return -EINVAL;
9349
9350 if (rdev->crit_proto_nlportid)
9351 return -EBUSY;
9352
9353 /* determine protocol if provided */
9354 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9355 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9356
9357 if (proto >= NUM_NL80211_CRIT_PROTO)
9358 return -EINVAL;
9359
9360 /* timeout must be provided */
9361 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9362 return -EINVAL;
9363
9364 duration =
9365 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9366
9367 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9368 return -ERANGE;
9369
9370 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9371 if (!ret)
9372 rdev->crit_proto_nlportid = info->snd_portid;
9373
9374 return ret;
9375 }
9376
9377 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9378 struct genl_info *info)
9379 {
9380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9381 struct wireless_dev *wdev = info->user_ptr[1];
9382
9383 if (!rdev->ops->crit_proto_stop)
9384 return -EOPNOTSUPP;
9385
9386 if (rdev->crit_proto_nlportid) {
9387 rdev->crit_proto_nlportid = 0;
9388 rdev_crit_proto_stop(rdev, wdev);
9389 }
9390 return 0;
9391 }
9392
9393 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9394 {
9395 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9396 struct wireless_dev *wdev =
9397 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9398 int i, err;
9399 u32 vid, subcmd;
9400
9401 if (!rdev->wiphy.vendor_commands)
9402 return -EOPNOTSUPP;
9403
9404 if (IS_ERR(wdev)) {
9405 err = PTR_ERR(wdev);
9406 if (err != -EINVAL)
9407 return err;
9408 wdev = NULL;
9409 } else if (wdev->wiphy != &rdev->wiphy) {
9410 return -EINVAL;
9411 }
9412
9413 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9414 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9415 return -EINVAL;
9416
9417 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9418 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9419 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9420 const struct wiphy_vendor_command *vcmd;
9421 void *data = NULL;
9422 int len = 0;
9423
9424 vcmd = &rdev->wiphy.vendor_commands[i];
9425
9426 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9427 continue;
9428
9429 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9430 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9431 if (!wdev)
9432 return -EINVAL;
9433 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9434 !wdev->netdev)
9435 return -EINVAL;
9436
9437 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9438 if (wdev->netdev &&
9439 !netif_running(wdev->netdev))
9440 return -ENETDOWN;
9441 if (!wdev->netdev && !wdev->p2p_started)
9442 return -ENETDOWN;
9443 }
9444 } else {
9445 wdev = NULL;
9446 }
9447
9448 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9449 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9450 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9451 }
9452
9453 rdev->cur_cmd_info = info;
9454 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9455 data, len);
9456 rdev->cur_cmd_info = NULL;
9457 return err;
9458 }
9459
9460 return -EOPNOTSUPP;
9461 }
9462
9463 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9464 enum nl80211_commands cmd,
9465 enum nl80211_attrs attr,
9466 int approxlen)
9467 {
9468 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9469
9470 if (WARN_ON(!rdev->cur_cmd_info))
9471 return NULL;
9472
9473 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9474 rdev->cur_cmd_info->snd_portid,
9475 rdev->cur_cmd_info->snd_seq,
9476 cmd, attr, NULL, GFP_KERNEL);
9477 }
9478 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9479
9480 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9481 {
9482 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9483 void *hdr = ((void **)skb->cb)[1];
9484 struct nlattr *data = ((void **)skb->cb)[2];
9485
9486 /* clear CB data for netlink core to own from now on */
9487 memset(skb->cb, 0, sizeof(skb->cb));
9488
9489 if (WARN_ON(!rdev->cur_cmd_info)) {
9490 kfree_skb(skb);
9491 return -EINVAL;
9492 }
9493
9494 nla_nest_end(skb, data);
9495 genlmsg_end(skb, hdr);
9496 return genlmsg_reply(skb, rdev->cur_cmd_info);
9497 }
9498 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9499
9500
9501 static int nl80211_set_qos_map(struct sk_buff *skb,
9502 struct genl_info *info)
9503 {
9504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9505 struct cfg80211_qos_map *qos_map = NULL;
9506 struct net_device *dev = info->user_ptr[1];
9507 u8 *pos, len, num_des, des_len, des;
9508 int ret;
9509
9510 if (!rdev->ops->set_qos_map)
9511 return -EOPNOTSUPP;
9512
9513 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9514 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9515 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9516
9517 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9518 len > IEEE80211_QOS_MAP_LEN_MAX)
9519 return -EINVAL;
9520
9521 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9522 if (!qos_map)
9523 return -ENOMEM;
9524
9525 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9526 if (num_des) {
9527 des_len = num_des *
9528 sizeof(struct cfg80211_dscp_exception);
9529 memcpy(qos_map->dscp_exception, pos, des_len);
9530 qos_map->num_des = num_des;
9531 for (des = 0; des < num_des; des++) {
9532 if (qos_map->dscp_exception[des].up > 7) {
9533 kfree(qos_map);
9534 return -EINVAL;
9535 }
9536 }
9537 pos += des_len;
9538 }
9539 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9540 }
9541
9542 wdev_lock(dev->ieee80211_ptr);
9543 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9544 if (!ret)
9545 ret = rdev_set_qos_map(rdev, dev, qos_map);
9546 wdev_unlock(dev->ieee80211_ptr);
9547
9548 kfree(qos_map);
9549 return ret;
9550 }
9551
9552 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9553 {
9554 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9555 struct net_device *dev = info->user_ptr[1];
9556 struct wireless_dev *wdev = dev->ieee80211_ptr;
9557 const u8 *peer;
9558 u8 tsid, up;
9559 u16 admitted_time = 0;
9560 int err;
9561
9562 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9563 return -EOPNOTSUPP;
9564
9565 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9566 !info->attrs[NL80211_ATTR_USER_PRIO])
9567 return -EINVAL;
9568
9569 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9570 if (tsid >= IEEE80211_NUM_TIDS)
9571 return -EINVAL;
9572
9573 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9574 if (up >= IEEE80211_NUM_UPS)
9575 return -EINVAL;
9576
9577 /* WMM uses TIDs 0-7 even for TSPEC */
9578 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9579 /* TODO: handle 802.11 TSPEC/admission control
9580 * need more attributes for that (e.g. BA session requirement);
9581 * change the WMM adminssion test above to allow both then
9582 */
9583 return -EINVAL;
9584 }
9585
9586 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9587
9588 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9589 admitted_time =
9590 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9591 if (!admitted_time)
9592 return -EINVAL;
9593 }
9594
9595 wdev_lock(wdev);
9596 switch (wdev->iftype) {
9597 case NL80211_IFTYPE_STATION:
9598 case NL80211_IFTYPE_P2P_CLIENT:
9599 if (wdev->current_bss)
9600 break;
9601 err = -ENOTCONN;
9602 goto out;
9603 default:
9604 err = -EOPNOTSUPP;
9605 goto out;
9606 }
9607
9608 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9609
9610 out:
9611 wdev_unlock(wdev);
9612 return err;
9613 }
9614
9615 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9616 {
9617 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9618 struct net_device *dev = info->user_ptr[1];
9619 struct wireless_dev *wdev = dev->ieee80211_ptr;
9620 const u8 *peer;
9621 u8 tsid;
9622 int err;
9623
9624 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9625 return -EINVAL;
9626
9627 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9628 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9629
9630 wdev_lock(wdev);
9631 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9632 wdev_unlock(wdev);
9633
9634 return err;
9635 }
9636
9637 #define NL80211_FLAG_NEED_WIPHY 0x01
9638 #define NL80211_FLAG_NEED_NETDEV 0x02
9639 #define NL80211_FLAG_NEED_RTNL 0x04
9640 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9641 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9642 NL80211_FLAG_CHECK_NETDEV_UP)
9643 #define NL80211_FLAG_NEED_WDEV 0x10
9644 /* If a netdev is associated, it must be UP, P2P must be started */
9645 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9646 NL80211_FLAG_CHECK_NETDEV_UP)
9647 #define NL80211_FLAG_CLEAR_SKB 0x20
9648
9649 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9650 struct genl_info *info)
9651 {
9652 struct cfg80211_registered_device *rdev;
9653 struct wireless_dev *wdev;
9654 struct net_device *dev;
9655 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9656
9657 if (rtnl)
9658 rtnl_lock();
9659
9660 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9661 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9662 if (IS_ERR(rdev)) {
9663 if (rtnl)
9664 rtnl_unlock();
9665 return PTR_ERR(rdev);
9666 }
9667 info->user_ptr[0] = rdev;
9668 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9669 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9670 ASSERT_RTNL();
9671
9672 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9673 info->attrs);
9674 if (IS_ERR(wdev)) {
9675 if (rtnl)
9676 rtnl_unlock();
9677 return PTR_ERR(wdev);
9678 }
9679
9680 dev = wdev->netdev;
9681 rdev = wiphy_to_rdev(wdev->wiphy);
9682
9683 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9684 if (!dev) {
9685 if (rtnl)
9686 rtnl_unlock();
9687 return -EINVAL;
9688 }
9689
9690 info->user_ptr[1] = dev;
9691 } else {
9692 info->user_ptr[1] = wdev;
9693 }
9694
9695 if (dev) {
9696 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9697 !netif_running(dev)) {
9698 if (rtnl)
9699 rtnl_unlock();
9700 return -ENETDOWN;
9701 }
9702
9703 dev_hold(dev);
9704 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9705 if (!wdev->p2p_started) {
9706 if (rtnl)
9707 rtnl_unlock();
9708 return -ENETDOWN;
9709 }
9710 }
9711
9712 info->user_ptr[0] = rdev;
9713 }
9714
9715 return 0;
9716 }
9717
9718 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9719 struct genl_info *info)
9720 {
9721 if (info->user_ptr[1]) {
9722 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9723 struct wireless_dev *wdev = info->user_ptr[1];
9724
9725 if (wdev->netdev)
9726 dev_put(wdev->netdev);
9727 } else {
9728 dev_put(info->user_ptr[1]);
9729 }
9730 }
9731
9732 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9733 rtnl_unlock();
9734
9735 /* If needed, clear the netlink message payload from the SKB
9736 * as it might contain key data that shouldn't stick around on
9737 * the heap after the SKB is freed. The netlink message header
9738 * is still needed for further processing, so leave it intact.
9739 */
9740 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
9741 struct nlmsghdr *nlh = nlmsg_hdr(skb);
9742
9743 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
9744 }
9745 }
9746
9747 static const struct genl_ops nl80211_ops[] = {
9748 {
9749 .cmd = NL80211_CMD_GET_WIPHY,
9750 .doit = nl80211_get_wiphy,
9751 .dumpit = nl80211_dump_wiphy,
9752 .done = nl80211_dump_wiphy_done,
9753 .policy = nl80211_policy,
9754 /* can be retrieved by unprivileged users */
9755 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9756 NL80211_FLAG_NEED_RTNL,
9757 },
9758 {
9759 .cmd = NL80211_CMD_SET_WIPHY,
9760 .doit = nl80211_set_wiphy,
9761 .policy = nl80211_policy,
9762 .flags = GENL_ADMIN_PERM,
9763 .internal_flags = NL80211_FLAG_NEED_RTNL,
9764 },
9765 {
9766 .cmd = NL80211_CMD_GET_INTERFACE,
9767 .doit = nl80211_get_interface,
9768 .dumpit = nl80211_dump_interface,
9769 .policy = nl80211_policy,
9770 /* can be retrieved by unprivileged users */
9771 .internal_flags = NL80211_FLAG_NEED_WDEV |
9772 NL80211_FLAG_NEED_RTNL,
9773 },
9774 {
9775 .cmd = NL80211_CMD_SET_INTERFACE,
9776 .doit = nl80211_set_interface,
9777 .policy = nl80211_policy,
9778 .flags = GENL_ADMIN_PERM,
9779 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9780 NL80211_FLAG_NEED_RTNL,
9781 },
9782 {
9783 .cmd = NL80211_CMD_NEW_INTERFACE,
9784 .doit = nl80211_new_interface,
9785 .policy = nl80211_policy,
9786 .flags = GENL_ADMIN_PERM,
9787 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9788 NL80211_FLAG_NEED_RTNL,
9789 },
9790 {
9791 .cmd = NL80211_CMD_DEL_INTERFACE,
9792 .doit = nl80211_del_interface,
9793 .policy = nl80211_policy,
9794 .flags = GENL_ADMIN_PERM,
9795 .internal_flags = NL80211_FLAG_NEED_WDEV |
9796 NL80211_FLAG_NEED_RTNL,
9797 },
9798 {
9799 .cmd = NL80211_CMD_GET_KEY,
9800 .doit = nl80211_get_key,
9801 .policy = nl80211_policy,
9802 .flags = GENL_ADMIN_PERM,
9803 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9804 NL80211_FLAG_NEED_RTNL,
9805 },
9806 {
9807 .cmd = NL80211_CMD_SET_KEY,
9808 .doit = nl80211_set_key,
9809 .policy = nl80211_policy,
9810 .flags = GENL_ADMIN_PERM,
9811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9812 NL80211_FLAG_NEED_RTNL |
9813 NL80211_FLAG_CLEAR_SKB,
9814 },
9815 {
9816 .cmd = NL80211_CMD_NEW_KEY,
9817 .doit = nl80211_new_key,
9818 .policy = nl80211_policy,
9819 .flags = GENL_ADMIN_PERM,
9820 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9821 NL80211_FLAG_NEED_RTNL |
9822 NL80211_FLAG_CLEAR_SKB,
9823 },
9824 {
9825 .cmd = NL80211_CMD_DEL_KEY,
9826 .doit = nl80211_del_key,
9827 .policy = nl80211_policy,
9828 .flags = GENL_ADMIN_PERM,
9829 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9830 NL80211_FLAG_NEED_RTNL,
9831 },
9832 {
9833 .cmd = NL80211_CMD_SET_BEACON,
9834 .policy = nl80211_policy,
9835 .flags = GENL_ADMIN_PERM,
9836 .doit = nl80211_set_beacon,
9837 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9838 NL80211_FLAG_NEED_RTNL,
9839 },
9840 {
9841 .cmd = NL80211_CMD_START_AP,
9842 .policy = nl80211_policy,
9843 .flags = GENL_ADMIN_PERM,
9844 .doit = nl80211_start_ap,
9845 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9846 NL80211_FLAG_NEED_RTNL,
9847 },
9848 {
9849 .cmd = NL80211_CMD_STOP_AP,
9850 .policy = nl80211_policy,
9851 .flags = GENL_ADMIN_PERM,
9852 .doit = nl80211_stop_ap,
9853 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9854 NL80211_FLAG_NEED_RTNL,
9855 },
9856 {
9857 .cmd = NL80211_CMD_GET_STATION,
9858 .doit = nl80211_get_station,
9859 .dumpit = nl80211_dump_station,
9860 .policy = nl80211_policy,
9861 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9862 NL80211_FLAG_NEED_RTNL,
9863 },
9864 {
9865 .cmd = NL80211_CMD_SET_STATION,
9866 .doit = nl80211_set_station,
9867 .policy = nl80211_policy,
9868 .flags = GENL_ADMIN_PERM,
9869 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9870 NL80211_FLAG_NEED_RTNL,
9871 },
9872 {
9873 .cmd = NL80211_CMD_NEW_STATION,
9874 .doit = nl80211_new_station,
9875 .policy = nl80211_policy,
9876 .flags = GENL_ADMIN_PERM,
9877 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9878 NL80211_FLAG_NEED_RTNL,
9879 },
9880 {
9881 .cmd = NL80211_CMD_DEL_STATION,
9882 .doit = nl80211_del_station,
9883 .policy = nl80211_policy,
9884 .flags = GENL_ADMIN_PERM,
9885 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9886 NL80211_FLAG_NEED_RTNL,
9887 },
9888 {
9889 .cmd = NL80211_CMD_GET_MPATH,
9890 .doit = nl80211_get_mpath,
9891 .dumpit = nl80211_dump_mpath,
9892 .policy = nl80211_policy,
9893 .flags = GENL_ADMIN_PERM,
9894 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9895 NL80211_FLAG_NEED_RTNL,
9896 },
9897 {
9898 .cmd = NL80211_CMD_GET_MPP,
9899 .doit = nl80211_get_mpp,
9900 .dumpit = nl80211_dump_mpp,
9901 .policy = nl80211_policy,
9902 .flags = GENL_ADMIN_PERM,
9903 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9904 NL80211_FLAG_NEED_RTNL,
9905 },
9906 {
9907 .cmd = NL80211_CMD_SET_MPATH,
9908 .doit = nl80211_set_mpath,
9909 .policy = nl80211_policy,
9910 .flags = GENL_ADMIN_PERM,
9911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9912 NL80211_FLAG_NEED_RTNL,
9913 },
9914 {
9915 .cmd = NL80211_CMD_NEW_MPATH,
9916 .doit = nl80211_new_mpath,
9917 .policy = nl80211_policy,
9918 .flags = GENL_ADMIN_PERM,
9919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9920 NL80211_FLAG_NEED_RTNL,
9921 },
9922 {
9923 .cmd = NL80211_CMD_DEL_MPATH,
9924 .doit = nl80211_del_mpath,
9925 .policy = nl80211_policy,
9926 .flags = GENL_ADMIN_PERM,
9927 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9928 NL80211_FLAG_NEED_RTNL,
9929 },
9930 {
9931 .cmd = NL80211_CMD_SET_BSS,
9932 .doit = nl80211_set_bss,
9933 .policy = nl80211_policy,
9934 .flags = GENL_ADMIN_PERM,
9935 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9936 NL80211_FLAG_NEED_RTNL,
9937 },
9938 {
9939 .cmd = NL80211_CMD_GET_REG,
9940 .doit = nl80211_get_reg,
9941 .policy = nl80211_policy,
9942 .internal_flags = NL80211_FLAG_NEED_RTNL,
9943 /* can be retrieved by unprivileged users */
9944 },
9945 {
9946 .cmd = NL80211_CMD_SET_REG,
9947 .doit = nl80211_set_reg,
9948 .policy = nl80211_policy,
9949 .flags = GENL_ADMIN_PERM,
9950 .internal_flags = NL80211_FLAG_NEED_RTNL,
9951 },
9952 {
9953 .cmd = NL80211_CMD_REQ_SET_REG,
9954 .doit = nl80211_req_set_reg,
9955 .policy = nl80211_policy,
9956 .flags = GENL_ADMIN_PERM,
9957 },
9958 {
9959 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9960 .doit = nl80211_get_mesh_config,
9961 .policy = nl80211_policy,
9962 /* can be retrieved by unprivileged users */
9963 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9964 NL80211_FLAG_NEED_RTNL,
9965 },
9966 {
9967 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9968 .doit = nl80211_update_mesh_config,
9969 .policy = nl80211_policy,
9970 .flags = GENL_ADMIN_PERM,
9971 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9972 NL80211_FLAG_NEED_RTNL,
9973 },
9974 {
9975 .cmd = NL80211_CMD_TRIGGER_SCAN,
9976 .doit = nl80211_trigger_scan,
9977 .policy = nl80211_policy,
9978 .flags = GENL_ADMIN_PERM,
9979 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9980 NL80211_FLAG_NEED_RTNL,
9981 },
9982 {
9983 .cmd = NL80211_CMD_GET_SCAN,
9984 .policy = nl80211_policy,
9985 .dumpit = nl80211_dump_scan,
9986 },
9987 {
9988 .cmd = NL80211_CMD_START_SCHED_SCAN,
9989 .doit = nl80211_start_sched_scan,
9990 .policy = nl80211_policy,
9991 .flags = GENL_ADMIN_PERM,
9992 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9993 NL80211_FLAG_NEED_RTNL,
9994 },
9995 {
9996 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9997 .doit = nl80211_stop_sched_scan,
9998 .policy = nl80211_policy,
9999 .flags = GENL_ADMIN_PERM,
10000 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10001 NL80211_FLAG_NEED_RTNL,
10002 },
10003 {
10004 .cmd = NL80211_CMD_AUTHENTICATE,
10005 .doit = nl80211_authenticate,
10006 .policy = nl80211_policy,
10007 .flags = GENL_ADMIN_PERM,
10008 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10009 NL80211_FLAG_NEED_RTNL |
10010 NL80211_FLAG_CLEAR_SKB,
10011 },
10012 {
10013 .cmd = NL80211_CMD_ASSOCIATE,
10014 .doit = nl80211_associate,
10015 .policy = nl80211_policy,
10016 .flags = GENL_ADMIN_PERM,
10017 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10018 NL80211_FLAG_NEED_RTNL,
10019 },
10020 {
10021 .cmd = NL80211_CMD_DEAUTHENTICATE,
10022 .doit = nl80211_deauthenticate,
10023 .policy = nl80211_policy,
10024 .flags = GENL_ADMIN_PERM,
10025 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10026 NL80211_FLAG_NEED_RTNL,
10027 },
10028 {
10029 .cmd = NL80211_CMD_DISASSOCIATE,
10030 .doit = nl80211_disassociate,
10031 .policy = nl80211_policy,
10032 .flags = GENL_ADMIN_PERM,
10033 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10034 NL80211_FLAG_NEED_RTNL,
10035 },
10036 {
10037 .cmd = NL80211_CMD_JOIN_IBSS,
10038 .doit = nl80211_join_ibss,
10039 .policy = nl80211_policy,
10040 .flags = GENL_ADMIN_PERM,
10041 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10042 NL80211_FLAG_NEED_RTNL,
10043 },
10044 {
10045 .cmd = NL80211_CMD_LEAVE_IBSS,
10046 .doit = nl80211_leave_ibss,
10047 .policy = nl80211_policy,
10048 .flags = GENL_ADMIN_PERM,
10049 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10050 NL80211_FLAG_NEED_RTNL,
10051 },
10052 #ifdef CONFIG_NL80211_TESTMODE
10053 {
10054 .cmd = NL80211_CMD_TESTMODE,
10055 .doit = nl80211_testmode_do,
10056 .dumpit = nl80211_testmode_dump,
10057 .policy = nl80211_policy,
10058 .flags = GENL_ADMIN_PERM,
10059 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10060 NL80211_FLAG_NEED_RTNL,
10061 },
10062 #endif
10063 {
10064 .cmd = NL80211_CMD_CONNECT,
10065 .doit = nl80211_connect,
10066 .policy = nl80211_policy,
10067 .flags = GENL_ADMIN_PERM,
10068 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10069 NL80211_FLAG_NEED_RTNL,
10070 },
10071 {
10072 .cmd = NL80211_CMD_DISCONNECT,
10073 .doit = nl80211_disconnect,
10074 .policy = nl80211_policy,
10075 .flags = GENL_ADMIN_PERM,
10076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10077 NL80211_FLAG_NEED_RTNL,
10078 },
10079 {
10080 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10081 .doit = nl80211_wiphy_netns,
10082 .policy = nl80211_policy,
10083 .flags = GENL_ADMIN_PERM,
10084 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10085 NL80211_FLAG_NEED_RTNL,
10086 },
10087 {
10088 .cmd = NL80211_CMD_GET_SURVEY,
10089 .policy = nl80211_policy,
10090 .dumpit = nl80211_dump_survey,
10091 },
10092 {
10093 .cmd = NL80211_CMD_SET_PMKSA,
10094 .doit = nl80211_setdel_pmksa,
10095 .policy = nl80211_policy,
10096 .flags = GENL_ADMIN_PERM,
10097 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10098 NL80211_FLAG_NEED_RTNL,
10099 },
10100 {
10101 .cmd = NL80211_CMD_DEL_PMKSA,
10102 .doit = nl80211_setdel_pmksa,
10103 .policy = nl80211_policy,
10104 .flags = GENL_ADMIN_PERM,
10105 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10106 NL80211_FLAG_NEED_RTNL,
10107 },
10108 {
10109 .cmd = NL80211_CMD_FLUSH_PMKSA,
10110 .doit = nl80211_flush_pmksa,
10111 .policy = nl80211_policy,
10112 .flags = GENL_ADMIN_PERM,
10113 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10114 NL80211_FLAG_NEED_RTNL,
10115 },
10116 {
10117 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10118 .doit = nl80211_remain_on_channel,
10119 .policy = nl80211_policy,
10120 .flags = GENL_ADMIN_PERM,
10121 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10122 NL80211_FLAG_NEED_RTNL,
10123 },
10124 {
10125 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10126 .doit = nl80211_cancel_remain_on_channel,
10127 .policy = nl80211_policy,
10128 .flags = GENL_ADMIN_PERM,
10129 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10130 NL80211_FLAG_NEED_RTNL,
10131 },
10132 {
10133 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10134 .doit = nl80211_set_tx_bitrate_mask,
10135 .policy = nl80211_policy,
10136 .flags = GENL_ADMIN_PERM,
10137 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10138 NL80211_FLAG_NEED_RTNL,
10139 },
10140 {
10141 .cmd = NL80211_CMD_REGISTER_FRAME,
10142 .doit = nl80211_register_mgmt,
10143 .policy = nl80211_policy,
10144 .flags = GENL_ADMIN_PERM,
10145 .internal_flags = NL80211_FLAG_NEED_WDEV |
10146 NL80211_FLAG_NEED_RTNL,
10147 },
10148 {
10149 .cmd = NL80211_CMD_FRAME,
10150 .doit = nl80211_tx_mgmt,
10151 .policy = nl80211_policy,
10152 .flags = GENL_ADMIN_PERM,
10153 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10154 NL80211_FLAG_NEED_RTNL,
10155 },
10156 {
10157 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10158 .doit = nl80211_tx_mgmt_cancel_wait,
10159 .policy = nl80211_policy,
10160 .flags = GENL_ADMIN_PERM,
10161 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10162 NL80211_FLAG_NEED_RTNL,
10163 },
10164 {
10165 .cmd = NL80211_CMD_SET_POWER_SAVE,
10166 .doit = nl80211_set_power_save,
10167 .policy = nl80211_policy,
10168 .flags = GENL_ADMIN_PERM,
10169 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10170 NL80211_FLAG_NEED_RTNL,
10171 },
10172 {
10173 .cmd = NL80211_CMD_GET_POWER_SAVE,
10174 .doit = nl80211_get_power_save,
10175 .policy = nl80211_policy,
10176 /* can be retrieved by unprivileged users */
10177 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10178 NL80211_FLAG_NEED_RTNL,
10179 },
10180 {
10181 .cmd = NL80211_CMD_SET_CQM,
10182 .doit = nl80211_set_cqm,
10183 .policy = nl80211_policy,
10184 .flags = GENL_ADMIN_PERM,
10185 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10186 NL80211_FLAG_NEED_RTNL,
10187 },
10188 {
10189 .cmd = NL80211_CMD_SET_CHANNEL,
10190 .doit = nl80211_set_channel,
10191 .policy = nl80211_policy,
10192 .flags = GENL_ADMIN_PERM,
10193 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10194 NL80211_FLAG_NEED_RTNL,
10195 },
10196 {
10197 .cmd = NL80211_CMD_SET_WDS_PEER,
10198 .doit = nl80211_set_wds_peer,
10199 .policy = nl80211_policy,
10200 .flags = GENL_ADMIN_PERM,
10201 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10202 NL80211_FLAG_NEED_RTNL,
10203 },
10204 {
10205 .cmd = NL80211_CMD_JOIN_MESH,
10206 .doit = nl80211_join_mesh,
10207 .policy = nl80211_policy,
10208 .flags = GENL_ADMIN_PERM,
10209 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10210 NL80211_FLAG_NEED_RTNL,
10211 },
10212 {
10213 .cmd = NL80211_CMD_LEAVE_MESH,
10214 .doit = nl80211_leave_mesh,
10215 .policy = nl80211_policy,
10216 .flags = GENL_ADMIN_PERM,
10217 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10218 NL80211_FLAG_NEED_RTNL,
10219 },
10220 #ifdef CONFIG_PM
10221 {
10222 .cmd = NL80211_CMD_GET_WOWLAN,
10223 .doit = nl80211_get_wowlan,
10224 .policy = nl80211_policy,
10225 /* can be retrieved by unprivileged users */
10226 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10227 NL80211_FLAG_NEED_RTNL,
10228 },
10229 {
10230 .cmd = NL80211_CMD_SET_WOWLAN,
10231 .doit = nl80211_set_wowlan,
10232 .policy = nl80211_policy,
10233 .flags = GENL_ADMIN_PERM,
10234 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10235 NL80211_FLAG_NEED_RTNL,
10236 },
10237 #endif
10238 {
10239 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10240 .doit = nl80211_set_rekey_data,
10241 .policy = nl80211_policy,
10242 .flags = GENL_ADMIN_PERM,
10243 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10244 NL80211_FLAG_NEED_RTNL |
10245 NL80211_FLAG_CLEAR_SKB,
10246 },
10247 {
10248 .cmd = NL80211_CMD_TDLS_MGMT,
10249 .doit = nl80211_tdls_mgmt,
10250 .policy = nl80211_policy,
10251 .flags = GENL_ADMIN_PERM,
10252 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10253 NL80211_FLAG_NEED_RTNL,
10254 },
10255 {
10256 .cmd = NL80211_CMD_TDLS_OPER,
10257 .doit = nl80211_tdls_oper,
10258 .policy = nl80211_policy,
10259 .flags = GENL_ADMIN_PERM,
10260 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10261 NL80211_FLAG_NEED_RTNL,
10262 },
10263 {
10264 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10265 .doit = nl80211_register_unexpected_frame,
10266 .policy = nl80211_policy,
10267 .flags = GENL_ADMIN_PERM,
10268 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10269 NL80211_FLAG_NEED_RTNL,
10270 },
10271 {
10272 .cmd = NL80211_CMD_PROBE_CLIENT,
10273 .doit = nl80211_probe_client,
10274 .policy = nl80211_policy,
10275 .flags = GENL_ADMIN_PERM,
10276 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10277 NL80211_FLAG_NEED_RTNL,
10278 },
10279 {
10280 .cmd = NL80211_CMD_REGISTER_BEACONS,
10281 .doit = nl80211_register_beacons,
10282 .policy = nl80211_policy,
10283 .flags = GENL_ADMIN_PERM,
10284 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10285 NL80211_FLAG_NEED_RTNL,
10286 },
10287 {
10288 .cmd = NL80211_CMD_SET_NOACK_MAP,
10289 .doit = nl80211_set_noack_map,
10290 .policy = nl80211_policy,
10291 .flags = GENL_ADMIN_PERM,
10292 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10293 NL80211_FLAG_NEED_RTNL,
10294 },
10295 {
10296 .cmd = NL80211_CMD_START_P2P_DEVICE,
10297 .doit = nl80211_start_p2p_device,
10298 .policy = nl80211_policy,
10299 .flags = GENL_ADMIN_PERM,
10300 .internal_flags = NL80211_FLAG_NEED_WDEV |
10301 NL80211_FLAG_NEED_RTNL,
10302 },
10303 {
10304 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10305 .doit = nl80211_stop_p2p_device,
10306 .policy = nl80211_policy,
10307 .flags = GENL_ADMIN_PERM,
10308 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10309 NL80211_FLAG_NEED_RTNL,
10310 },
10311 {
10312 .cmd = NL80211_CMD_SET_MCAST_RATE,
10313 .doit = nl80211_set_mcast_rate,
10314 .policy = nl80211_policy,
10315 .flags = GENL_ADMIN_PERM,
10316 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10317 NL80211_FLAG_NEED_RTNL,
10318 },
10319 {
10320 .cmd = NL80211_CMD_SET_MAC_ACL,
10321 .doit = nl80211_set_mac_acl,
10322 .policy = nl80211_policy,
10323 .flags = GENL_ADMIN_PERM,
10324 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10325 NL80211_FLAG_NEED_RTNL,
10326 },
10327 {
10328 .cmd = NL80211_CMD_RADAR_DETECT,
10329 .doit = nl80211_start_radar_detection,
10330 .policy = nl80211_policy,
10331 .flags = GENL_ADMIN_PERM,
10332 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10333 NL80211_FLAG_NEED_RTNL,
10334 },
10335 {
10336 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10337 .doit = nl80211_get_protocol_features,
10338 .policy = nl80211_policy,
10339 },
10340 {
10341 .cmd = NL80211_CMD_UPDATE_FT_IES,
10342 .doit = nl80211_update_ft_ies,
10343 .policy = nl80211_policy,
10344 .flags = GENL_ADMIN_PERM,
10345 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10346 NL80211_FLAG_NEED_RTNL,
10347 },
10348 {
10349 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10350 .doit = nl80211_crit_protocol_start,
10351 .policy = nl80211_policy,
10352 .flags = GENL_ADMIN_PERM,
10353 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10354 NL80211_FLAG_NEED_RTNL,
10355 },
10356 {
10357 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10358 .doit = nl80211_crit_protocol_stop,
10359 .policy = nl80211_policy,
10360 .flags = GENL_ADMIN_PERM,
10361 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10362 NL80211_FLAG_NEED_RTNL,
10363 },
10364 {
10365 .cmd = NL80211_CMD_GET_COALESCE,
10366 .doit = nl80211_get_coalesce,
10367 .policy = nl80211_policy,
10368 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10369 NL80211_FLAG_NEED_RTNL,
10370 },
10371 {
10372 .cmd = NL80211_CMD_SET_COALESCE,
10373 .doit = nl80211_set_coalesce,
10374 .policy = nl80211_policy,
10375 .flags = GENL_ADMIN_PERM,
10376 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10377 NL80211_FLAG_NEED_RTNL,
10378 },
10379 {
10380 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10381 .doit = nl80211_channel_switch,
10382 .policy = nl80211_policy,
10383 .flags = GENL_ADMIN_PERM,
10384 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10385 NL80211_FLAG_NEED_RTNL,
10386 },
10387 {
10388 .cmd = NL80211_CMD_VENDOR,
10389 .doit = nl80211_vendor_cmd,
10390 .policy = nl80211_policy,
10391 .flags = GENL_ADMIN_PERM,
10392 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10393 NL80211_FLAG_NEED_RTNL,
10394 },
10395 {
10396 .cmd = NL80211_CMD_SET_QOS_MAP,
10397 .doit = nl80211_set_qos_map,
10398 .policy = nl80211_policy,
10399 .flags = GENL_ADMIN_PERM,
10400 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10401 NL80211_FLAG_NEED_RTNL,
10402 },
10403 {
10404 .cmd = NL80211_CMD_ADD_TX_TS,
10405 .doit = nl80211_add_tx_ts,
10406 .policy = nl80211_policy,
10407 .flags = GENL_ADMIN_PERM,
10408 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10409 NL80211_FLAG_NEED_RTNL,
10410 },
10411 {
10412 .cmd = NL80211_CMD_DEL_TX_TS,
10413 .doit = nl80211_del_tx_ts,
10414 .policy = nl80211_policy,
10415 .flags = GENL_ADMIN_PERM,
10416 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10417 NL80211_FLAG_NEED_RTNL,
10418 },
10419 };
10420
10421 /* notification functions */
10422
10423 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10424 enum nl80211_commands cmd)
10425 {
10426 struct sk_buff *msg;
10427 struct nl80211_dump_wiphy_state state = {};
10428
10429 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10430 cmd != NL80211_CMD_DEL_WIPHY);
10431
10432 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10433 if (!msg)
10434 return;
10435
10436 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10437 nlmsg_free(msg);
10438 return;
10439 }
10440
10441 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10442 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10443 }
10444
10445 static int nl80211_add_scan_req(struct sk_buff *msg,
10446 struct cfg80211_registered_device *rdev)
10447 {
10448 struct cfg80211_scan_request *req = rdev->scan_req;
10449 struct nlattr *nest;
10450 int i;
10451
10452 if (WARN_ON(!req))
10453 return 0;
10454
10455 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10456 if (!nest)
10457 goto nla_put_failure;
10458 for (i = 0; i < req->n_ssids; i++) {
10459 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10460 goto nla_put_failure;
10461 }
10462 nla_nest_end(msg, nest);
10463
10464 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10465 if (!nest)
10466 goto nla_put_failure;
10467 for (i = 0; i < req->n_channels; i++) {
10468 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10469 goto nla_put_failure;
10470 }
10471 nla_nest_end(msg, nest);
10472
10473 if (req->ie &&
10474 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10475 goto nla_put_failure;
10476
10477 if (req->flags &&
10478 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10479 goto nla_put_failure;
10480
10481 return 0;
10482 nla_put_failure:
10483 return -ENOBUFS;
10484 }
10485
10486 static int nl80211_send_scan_msg(struct sk_buff *msg,
10487 struct cfg80211_registered_device *rdev,
10488 struct wireless_dev *wdev,
10489 u32 portid, u32 seq, int flags,
10490 u32 cmd)
10491 {
10492 void *hdr;
10493
10494 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10495 if (!hdr)
10496 return -1;
10497
10498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10499 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10500 wdev->netdev->ifindex)) ||
10501 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10502 goto nla_put_failure;
10503
10504 /* ignore errors and send incomplete event anyway */
10505 nl80211_add_scan_req(msg, rdev);
10506
10507 return genlmsg_end(msg, hdr);
10508
10509 nla_put_failure:
10510 genlmsg_cancel(msg, hdr);
10511 return -EMSGSIZE;
10512 }
10513
10514 static int
10515 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10516 struct cfg80211_registered_device *rdev,
10517 struct net_device *netdev,
10518 u32 portid, u32 seq, int flags, u32 cmd)
10519 {
10520 void *hdr;
10521
10522 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10523 if (!hdr)
10524 return -1;
10525
10526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10527 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10528 goto nla_put_failure;
10529
10530 return genlmsg_end(msg, hdr);
10531
10532 nla_put_failure:
10533 genlmsg_cancel(msg, hdr);
10534 return -EMSGSIZE;
10535 }
10536
10537 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10538 struct wireless_dev *wdev)
10539 {
10540 struct sk_buff *msg;
10541
10542 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10543 if (!msg)
10544 return;
10545
10546 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10547 NL80211_CMD_TRIGGER_SCAN) < 0) {
10548 nlmsg_free(msg);
10549 return;
10550 }
10551
10552 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10553 NL80211_MCGRP_SCAN, GFP_KERNEL);
10554 }
10555
10556 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10557 struct wireless_dev *wdev, bool aborted)
10558 {
10559 struct sk_buff *msg;
10560
10561 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10562 if (!msg)
10563 return NULL;
10564
10565 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10566 aborted ? NL80211_CMD_SCAN_ABORTED :
10567 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10568 nlmsg_free(msg);
10569 return NULL;
10570 }
10571
10572 return msg;
10573 }
10574
10575 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10576 struct sk_buff *msg)
10577 {
10578 if (!msg)
10579 return;
10580
10581 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10582 NL80211_MCGRP_SCAN, GFP_KERNEL);
10583 }
10584
10585 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10586 struct net_device *netdev)
10587 {
10588 struct sk_buff *msg;
10589
10590 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10591 if (!msg)
10592 return;
10593
10594 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10595 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10596 nlmsg_free(msg);
10597 return;
10598 }
10599
10600 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10601 NL80211_MCGRP_SCAN, GFP_KERNEL);
10602 }
10603
10604 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10605 struct net_device *netdev, u32 cmd)
10606 {
10607 struct sk_buff *msg;
10608
10609 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10610 if (!msg)
10611 return;
10612
10613 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10614 nlmsg_free(msg);
10615 return;
10616 }
10617
10618 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10619 NL80211_MCGRP_SCAN, GFP_KERNEL);
10620 }
10621
10622 /*
10623 * This can happen on global regulatory changes or device specific settings
10624 * based on custom world regulatory domains.
10625 */
10626 void nl80211_send_reg_change_event(struct regulatory_request *request)
10627 {
10628 struct sk_buff *msg;
10629 void *hdr;
10630
10631 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10632 if (!msg)
10633 return;
10634
10635 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10636 if (!hdr) {
10637 nlmsg_free(msg);
10638 return;
10639 }
10640
10641 /* Userspace can always count this one always being set */
10642 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10643 goto nla_put_failure;
10644
10645 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10646 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10647 NL80211_REGDOM_TYPE_WORLD))
10648 goto nla_put_failure;
10649 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10650 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10651 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10652 goto nla_put_failure;
10653 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10654 request->intersect) {
10655 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10656 NL80211_REGDOM_TYPE_INTERSECTION))
10657 goto nla_put_failure;
10658 } else {
10659 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10660 NL80211_REGDOM_TYPE_COUNTRY) ||
10661 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10662 request->alpha2))
10663 goto nla_put_failure;
10664 }
10665
10666 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10667 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10668 goto nla_put_failure;
10669
10670 genlmsg_end(msg, hdr);
10671
10672 rcu_read_lock();
10673 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10674 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10675 rcu_read_unlock();
10676
10677 return;
10678
10679 nla_put_failure:
10680 genlmsg_cancel(msg, hdr);
10681 nlmsg_free(msg);
10682 }
10683
10684 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10685 struct net_device *netdev,
10686 const u8 *buf, size_t len,
10687 enum nl80211_commands cmd, gfp_t gfp,
10688 int uapsd_queues)
10689 {
10690 struct sk_buff *msg;
10691 void *hdr;
10692
10693 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10694 if (!msg)
10695 return;
10696
10697 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10698 if (!hdr) {
10699 nlmsg_free(msg);
10700 return;
10701 }
10702
10703 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10704 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10705 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10706 goto nla_put_failure;
10707
10708 if (uapsd_queues >= 0) {
10709 struct nlattr *nla_wmm =
10710 nla_nest_start(msg, NL80211_ATTR_STA_WME);
10711 if (!nla_wmm)
10712 goto nla_put_failure;
10713
10714 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
10715 uapsd_queues))
10716 goto nla_put_failure;
10717
10718 nla_nest_end(msg, nla_wmm);
10719 }
10720
10721 genlmsg_end(msg, hdr);
10722
10723 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10724 NL80211_MCGRP_MLME, gfp);
10725 return;
10726
10727 nla_put_failure:
10728 genlmsg_cancel(msg, hdr);
10729 nlmsg_free(msg);
10730 }
10731
10732 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10733 struct net_device *netdev, const u8 *buf,
10734 size_t len, gfp_t gfp)
10735 {
10736 nl80211_send_mlme_event(rdev, netdev, buf, len,
10737 NL80211_CMD_AUTHENTICATE, gfp, -1);
10738 }
10739
10740 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10741 struct net_device *netdev, const u8 *buf,
10742 size_t len, gfp_t gfp, int uapsd_queues)
10743 {
10744 nl80211_send_mlme_event(rdev, netdev, buf, len,
10745 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
10746 }
10747
10748 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10749 struct net_device *netdev, const u8 *buf,
10750 size_t len, gfp_t gfp)
10751 {
10752 nl80211_send_mlme_event(rdev, netdev, buf, len,
10753 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
10754 }
10755
10756 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10757 struct net_device *netdev, const u8 *buf,
10758 size_t len, gfp_t gfp)
10759 {
10760 nl80211_send_mlme_event(rdev, netdev, buf, len,
10761 NL80211_CMD_DISASSOCIATE, gfp, -1);
10762 }
10763
10764 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10765 size_t len)
10766 {
10767 struct wireless_dev *wdev = dev->ieee80211_ptr;
10768 struct wiphy *wiphy = wdev->wiphy;
10769 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10770 const struct ieee80211_mgmt *mgmt = (void *)buf;
10771 u32 cmd;
10772
10773 if (WARN_ON(len < 2))
10774 return;
10775
10776 if (ieee80211_is_deauth(mgmt->frame_control))
10777 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10778 else
10779 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10780
10781 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10782 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
10783 }
10784 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10785
10786 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10787 struct net_device *netdev, int cmd,
10788 const u8 *addr, gfp_t gfp)
10789 {
10790 struct sk_buff *msg;
10791 void *hdr;
10792
10793 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10794 if (!msg)
10795 return;
10796
10797 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10798 if (!hdr) {
10799 nlmsg_free(msg);
10800 return;
10801 }
10802
10803 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10804 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10805 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10806 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10807 goto nla_put_failure;
10808
10809 genlmsg_end(msg, hdr);
10810
10811 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10812 NL80211_MCGRP_MLME, gfp);
10813 return;
10814
10815 nla_put_failure:
10816 genlmsg_cancel(msg, hdr);
10817 nlmsg_free(msg);
10818 }
10819
10820 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10821 struct net_device *netdev, const u8 *addr,
10822 gfp_t gfp)
10823 {
10824 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10825 addr, gfp);
10826 }
10827
10828 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10829 struct net_device *netdev, const u8 *addr,
10830 gfp_t gfp)
10831 {
10832 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10833 addr, gfp);
10834 }
10835
10836 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10837 struct net_device *netdev, const u8 *bssid,
10838 const u8 *req_ie, size_t req_ie_len,
10839 const u8 *resp_ie, size_t resp_ie_len,
10840 u16 status, gfp_t gfp)
10841 {
10842 struct sk_buff *msg;
10843 void *hdr;
10844
10845 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10846 if (!msg)
10847 return;
10848
10849 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10850 if (!hdr) {
10851 nlmsg_free(msg);
10852 return;
10853 }
10854
10855 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10856 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10857 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10858 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10859 (req_ie &&
10860 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10861 (resp_ie &&
10862 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10863 goto nla_put_failure;
10864
10865 genlmsg_end(msg, hdr);
10866
10867 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10868 NL80211_MCGRP_MLME, gfp);
10869 return;
10870
10871 nla_put_failure:
10872 genlmsg_cancel(msg, hdr);
10873 nlmsg_free(msg);
10874
10875 }
10876
10877 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10878 struct net_device *netdev, const u8 *bssid,
10879 const u8 *req_ie, size_t req_ie_len,
10880 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10881 {
10882 struct sk_buff *msg;
10883 void *hdr;
10884
10885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10886 if (!msg)
10887 return;
10888
10889 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10890 if (!hdr) {
10891 nlmsg_free(msg);
10892 return;
10893 }
10894
10895 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10896 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10897 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10898 (req_ie &&
10899 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10900 (resp_ie &&
10901 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10902 goto nla_put_failure;
10903
10904 genlmsg_end(msg, hdr);
10905
10906 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10907 NL80211_MCGRP_MLME, gfp);
10908 return;
10909
10910 nla_put_failure:
10911 genlmsg_cancel(msg, hdr);
10912 nlmsg_free(msg);
10913
10914 }
10915
10916 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10917 struct net_device *netdev, u16 reason,
10918 const u8 *ie, size_t ie_len, bool from_ap)
10919 {
10920 struct sk_buff *msg;
10921 void *hdr;
10922
10923 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10924 if (!msg)
10925 return;
10926
10927 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10928 if (!hdr) {
10929 nlmsg_free(msg);
10930 return;
10931 }
10932
10933 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10934 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10935 (from_ap && reason &&
10936 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10937 (from_ap &&
10938 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10939 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10940 goto nla_put_failure;
10941
10942 genlmsg_end(msg, hdr);
10943
10944 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10945 NL80211_MCGRP_MLME, GFP_KERNEL);
10946 return;
10947
10948 nla_put_failure:
10949 genlmsg_cancel(msg, hdr);
10950 nlmsg_free(msg);
10951
10952 }
10953
10954 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10955 struct net_device *netdev, const u8 *bssid,
10956 gfp_t gfp)
10957 {
10958 struct sk_buff *msg;
10959 void *hdr;
10960
10961 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10962 if (!msg)
10963 return;
10964
10965 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10966 if (!hdr) {
10967 nlmsg_free(msg);
10968 return;
10969 }
10970
10971 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10972 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10973 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10974 goto nla_put_failure;
10975
10976 genlmsg_end(msg, hdr);
10977
10978 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10979 NL80211_MCGRP_MLME, gfp);
10980 return;
10981
10982 nla_put_failure:
10983 genlmsg_cancel(msg, hdr);
10984 nlmsg_free(msg);
10985 }
10986
10987 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10988 const u8* ie, u8 ie_len, gfp_t gfp)
10989 {
10990 struct wireless_dev *wdev = dev->ieee80211_ptr;
10991 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10992 struct sk_buff *msg;
10993 void *hdr;
10994
10995 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10996 return;
10997
10998 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10999
11000 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11001 if (!msg)
11002 return;
11003
11004 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11005 if (!hdr) {
11006 nlmsg_free(msg);
11007 return;
11008 }
11009
11010 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11011 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11012 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11013 (ie_len && ie &&
11014 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11015 goto nla_put_failure;
11016
11017 genlmsg_end(msg, hdr);
11018
11019 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11020 NL80211_MCGRP_MLME, gfp);
11021 return;
11022
11023 nla_put_failure:
11024 genlmsg_cancel(msg, hdr);
11025 nlmsg_free(msg);
11026 }
11027 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11028
11029 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11030 struct net_device *netdev, const u8 *addr,
11031 enum nl80211_key_type key_type, int key_id,
11032 const u8 *tsc, gfp_t gfp)
11033 {
11034 struct sk_buff *msg;
11035 void *hdr;
11036
11037 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11038 if (!msg)
11039 return;
11040
11041 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11042 if (!hdr) {
11043 nlmsg_free(msg);
11044 return;
11045 }
11046
11047 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11048 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11049 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11050 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11051 (key_id != -1 &&
11052 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11053 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11054 goto nla_put_failure;
11055
11056 genlmsg_end(msg, hdr);
11057
11058 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11059 NL80211_MCGRP_MLME, gfp);
11060 return;
11061
11062 nla_put_failure:
11063 genlmsg_cancel(msg, hdr);
11064 nlmsg_free(msg);
11065 }
11066
11067 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11068 struct ieee80211_channel *channel_before,
11069 struct ieee80211_channel *channel_after)
11070 {
11071 struct sk_buff *msg;
11072 void *hdr;
11073 struct nlattr *nl_freq;
11074
11075 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11076 if (!msg)
11077 return;
11078
11079 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11080 if (!hdr) {
11081 nlmsg_free(msg);
11082 return;
11083 }
11084
11085 /*
11086 * Since we are applying the beacon hint to a wiphy we know its
11087 * wiphy_idx is valid
11088 */
11089 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11090 goto nla_put_failure;
11091
11092 /* Before */
11093 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11094 if (!nl_freq)
11095 goto nla_put_failure;
11096 if (nl80211_msg_put_channel(msg, channel_before, false))
11097 goto nla_put_failure;
11098 nla_nest_end(msg, nl_freq);
11099
11100 /* After */
11101 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11102 if (!nl_freq)
11103 goto nla_put_failure;
11104 if (nl80211_msg_put_channel(msg, channel_after, false))
11105 goto nla_put_failure;
11106 nla_nest_end(msg, nl_freq);
11107
11108 genlmsg_end(msg, hdr);
11109
11110 rcu_read_lock();
11111 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11112 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11113 rcu_read_unlock();
11114
11115 return;
11116
11117 nla_put_failure:
11118 genlmsg_cancel(msg, hdr);
11119 nlmsg_free(msg);
11120 }
11121
11122 static void nl80211_send_remain_on_chan_event(
11123 int cmd, struct cfg80211_registered_device *rdev,
11124 struct wireless_dev *wdev, u64 cookie,
11125 struct ieee80211_channel *chan,
11126 unsigned int duration, gfp_t gfp)
11127 {
11128 struct sk_buff *msg;
11129 void *hdr;
11130
11131 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11132 if (!msg)
11133 return;
11134
11135 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11136 if (!hdr) {
11137 nlmsg_free(msg);
11138 return;
11139 }
11140
11141 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11142 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11143 wdev->netdev->ifindex)) ||
11144 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11145 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11146 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11147 NL80211_CHAN_NO_HT) ||
11148 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11149 goto nla_put_failure;
11150
11151 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11152 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11153 goto nla_put_failure;
11154
11155 genlmsg_end(msg, hdr);
11156
11157 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11158 NL80211_MCGRP_MLME, gfp);
11159 return;
11160
11161 nla_put_failure:
11162 genlmsg_cancel(msg, hdr);
11163 nlmsg_free(msg);
11164 }
11165
11166 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11167 struct ieee80211_channel *chan,
11168 unsigned int duration, gfp_t gfp)
11169 {
11170 struct wiphy *wiphy = wdev->wiphy;
11171 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11172
11173 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11174 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11175 rdev, wdev, cookie, chan,
11176 duration, gfp);
11177 }
11178 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11179
11180 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11181 struct ieee80211_channel *chan,
11182 gfp_t gfp)
11183 {
11184 struct wiphy *wiphy = wdev->wiphy;
11185 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11186
11187 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11188 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11189 rdev, wdev, cookie, chan, 0, gfp);
11190 }
11191 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11192
11193 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11194 struct station_info *sinfo, gfp_t gfp)
11195 {
11196 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11197 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11198 struct sk_buff *msg;
11199
11200 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11201
11202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11203 if (!msg)
11204 return;
11205
11206 if (nl80211_send_station(msg, 0, 0, 0,
11207 rdev, dev, mac_addr, sinfo) < 0) {
11208 nlmsg_free(msg);
11209 return;
11210 }
11211
11212 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11213 NL80211_MCGRP_MLME, gfp);
11214 }
11215 EXPORT_SYMBOL(cfg80211_new_sta);
11216
11217 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11218 {
11219 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11220 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11221 struct sk_buff *msg;
11222 void *hdr;
11223
11224 trace_cfg80211_del_sta(dev, mac_addr);
11225
11226 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11227 if (!msg)
11228 return;
11229
11230 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11231 if (!hdr) {
11232 nlmsg_free(msg);
11233 return;
11234 }
11235
11236 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11237 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11238 goto nla_put_failure;
11239
11240 genlmsg_end(msg, hdr);
11241
11242 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11243 NL80211_MCGRP_MLME, gfp);
11244 return;
11245
11246 nla_put_failure:
11247 genlmsg_cancel(msg, hdr);
11248 nlmsg_free(msg);
11249 }
11250 EXPORT_SYMBOL(cfg80211_del_sta);
11251
11252 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11253 enum nl80211_connect_failed_reason reason,
11254 gfp_t gfp)
11255 {
11256 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11257 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11258 struct sk_buff *msg;
11259 void *hdr;
11260
11261 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11262 if (!msg)
11263 return;
11264
11265 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11266 if (!hdr) {
11267 nlmsg_free(msg);
11268 return;
11269 }
11270
11271 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11272 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11273 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11274 goto nla_put_failure;
11275
11276 genlmsg_end(msg, hdr);
11277
11278 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11279 NL80211_MCGRP_MLME, gfp);
11280 return;
11281
11282 nla_put_failure:
11283 genlmsg_cancel(msg, hdr);
11284 nlmsg_free(msg);
11285 }
11286 EXPORT_SYMBOL(cfg80211_conn_failed);
11287
11288 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11289 const u8 *addr, gfp_t gfp)
11290 {
11291 struct wireless_dev *wdev = dev->ieee80211_ptr;
11292 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11293 struct sk_buff *msg;
11294 void *hdr;
11295 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11296
11297 if (!nlportid)
11298 return false;
11299
11300 msg = nlmsg_new(100, gfp);
11301 if (!msg)
11302 return true;
11303
11304 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11305 if (!hdr) {
11306 nlmsg_free(msg);
11307 return true;
11308 }
11309
11310 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11311 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11312 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11313 goto nla_put_failure;
11314
11315 genlmsg_end(msg, hdr);
11316 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11317 return true;
11318
11319 nla_put_failure:
11320 genlmsg_cancel(msg, hdr);
11321 nlmsg_free(msg);
11322 return true;
11323 }
11324
11325 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11326 const u8 *addr, gfp_t gfp)
11327 {
11328 struct wireless_dev *wdev = dev->ieee80211_ptr;
11329 bool ret;
11330
11331 trace_cfg80211_rx_spurious_frame(dev, addr);
11332
11333 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11334 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11335 trace_cfg80211_return_bool(false);
11336 return false;
11337 }
11338 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11339 addr, gfp);
11340 trace_cfg80211_return_bool(ret);
11341 return ret;
11342 }
11343 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11344
11345 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11346 const u8 *addr, gfp_t gfp)
11347 {
11348 struct wireless_dev *wdev = dev->ieee80211_ptr;
11349 bool ret;
11350
11351 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11352
11353 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11354 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11355 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11356 trace_cfg80211_return_bool(false);
11357 return false;
11358 }
11359 ret = __nl80211_unexpected_frame(dev,
11360 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11361 addr, gfp);
11362 trace_cfg80211_return_bool(ret);
11363 return ret;
11364 }
11365 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11366
11367 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11368 struct wireless_dev *wdev, u32 nlportid,
11369 int freq, int sig_dbm,
11370 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11371 {
11372 struct net_device *netdev = wdev->netdev;
11373 struct sk_buff *msg;
11374 void *hdr;
11375
11376 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11377 if (!msg)
11378 return -ENOMEM;
11379
11380 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11381 if (!hdr) {
11382 nlmsg_free(msg);
11383 return -ENOMEM;
11384 }
11385
11386 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11387 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11388 netdev->ifindex)) ||
11389 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11390 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11391 (sig_dbm &&
11392 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11393 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11394 (flags &&
11395 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11396 goto nla_put_failure;
11397
11398 genlmsg_end(msg, hdr);
11399
11400 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11401
11402 nla_put_failure:
11403 genlmsg_cancel(msg, hdr);
11404 nlmsg_free(msg);
11405 return -ENOBUFS;
11406 }
11407
11408 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11409 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11410 {
11411 struct wiphy *wiphy = wdev->wiphy;
11412 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11413 struct net_device *netdev = wdev->netdev;
11414 struct sk_buff *msg;
11415 void *hdr;
11416
11417 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11418
11419 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11420 if (!msg)
11421 return;
11422
11423 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11424 if (!hdr) {
11425 nlmsg_free(msg);
11426 return;
11427 }
11428
11429 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11430 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11431 netdev->ifindex)) ||
11432 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11433 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11434 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11435 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11436 goto nla_put_failure;
11437
11438 genlmsg_end(msg, hdr);
11439
11440 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11441 NL80211_MCGRP_MLME, gfp);
11442 return;
11443
11444 nla_put_failure:
11445 genlmsg_cancel(msg, hdr);
11446 nlmsg_free(msg);
11447 }
11448 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11449
11450 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11451 enum nl80211_cqm_rssi_threshold_event rssi_event,
11452 gfp_t gfp)
11453 {
11454 struct wireless_dev *wdev = dev->ieee80211_ptr;
11455 struct wiphy *wiphy = wdev->wiphy;
11456 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11457 struct sk_buff *msg;
11458 struct nlattr *pinfoattr;
11459 void *hdr;
11460
11461 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11462
11463 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11464 if (!msg)
11465 return;
11466
11467 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11468 if (!hdr) {
11469 nlmsg_free(msg);
11470 return;
11471 }
11472
11473 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11474 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11475 goto nla_put_failure;
11476
11477 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11478 if (!pinfoattr)
11479 goto nla_put_failure;
11480
11481 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11482 rssi_event))
11483 goto nla_put_failure;
11484
11485 nla_nest_end(msg, pinfoattr);
11486
11487 genlmsg_end(msg, hdr);
11488
11489 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11490 NL80211_MCGRP_MLME, gfp);
11491 return;
11492
11493 nla_put_failure:
11494 genlmsg_cancel(msg, hdr);
11495 nlmsg_free(msg);
11496 }
11497 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11498
11499 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11500 struct net_device *netdev, const u8 *bssid,
11501 const u8 *replay_ctr, gfp_t gfp)
11502 {
11503 struct sk_buff *msg;
11504 struct nlattr *rekey_attr;
11505 void *hdr;
11506
11507 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11508 if (!msg)
11509 return;
11510
11511 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11512 if (!hdr) {
11513 nlmsg_free(msg);
11514 return;
11515 }
11516
11517 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11518 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11519 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11520 goto nla_put_failure;
11521
11522 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11523 if (!rekey_attr)
11524 goto nla_put_failure;
11525
11526 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11527 NL80211_REPLAY_CTR_LEN, replay_ctr))
11528 goto nla_put_failure;
11529
11530 nla_nest_end(msg, rekey_attr);
11531
11532 genlmsg_end(msg, hdr);
11533
11534 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11535 NL80211_MCGRP_MLME, gfp);
11536 return;
11537
11538 nla_put_failure:
11539 genlmsg_cancel(msg, hdr);
11540 nlmsg_free(msg);
11541 }
11542
11543 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11544 const u8 *replay_ctr, gfp_t gfp)
11545 {
11546 struct wireless_dev *wdev = dev->ieee80211_ptr;
11547 struct wiphy *wiphy = wdev->wiphy;
11548 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11549
11550 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11551 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11552 }
11553 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11554
11555 static void
11556 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11557 struct net_device *netdev, int index,
11558 const u8 *bssid, bool preauth, gfp_t gfp)
11559 {
11560 struct sk_buff *msg;
11561 struct nlattr *attr;
11562 void *hdr;
11563
11564 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11565 if (!msg)
11566 return;
11567
11568 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11569 if (!hdr) {
11570 nlmsg_free(msg);
11571 return;
11572 }
11573
11574 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11575 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11576 goto nla_put_failure;
11577
11578 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11579 if (!attr)
11580 goto nla_put_failure;
11581
11582 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11583 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11584 (preauth &&
11585 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11586 goto nla_put_failure;
11587
11588 nla_nest_end(msg, attr);
11589
11590 genlmsg_end(msg, hdr);
11591
11592 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11593 NL80211_MCGRP_MLME, gfp);
11594 return;
11595
11596 nla_put_failure:
11597 genlmsg_cancel(msg, hdr);
11598 nlmsg_free(msg);
11599 }
11600
11601 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11602 const u8 *bssid, bool preauth, gfp_t gfp)
11603 {
11604 struct wireless_dev *wdev = dev->ieee80211_ptr;
11605 struct wiphy *wiphy = wdev->wiphy;
11606 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11607
11608 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11609 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11610 }
11611 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11612
11613 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11614 struct net_device *netdev,
11615 struct cfg80211_chan_def *chandef,
11616 gfp_t gfp)
11617 {
11618 struct sk_buff *msg;
11619 void *hdr;
11620
11621 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11622 if (!msg)
11623 return;
11624
11625 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11626 if (!hdr) {
11627 nlmsg_free(msg);
11628 return;
11629 }
11630
11631 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11632 goto nla_put_failure;
11633
11634 if (nl80211_send_chandef(msg, chandef))
11635 goto nla_put_failure;
11636
11637 genlmsg_end(msg, hdr);
11638
11639 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11640 NL80211_MCGRP_MLME, gfp);
11641 return;
11642
11643 nla_put_failure:
11644 genlmsg_cancel(msg, hdr);
11645 nlmsg_free(msg);
11646 }
11647
11648 void cfg80211_ch_switch_notify(struct net_device *dev,
11649 struct cfg80211_chan_def *chandef)
11650 {
11651 struct wireless_dev *wdev = dev->ieee80211_ptr;
11652 struct wiphy *wiphy = wdev->wiphy;
11653 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11654
11655 ASSERT_WDEV_LOCK(wdev);
11656
11657 trace_cfg80211_ch_switch_notify(dev, chandef);
11658
11659 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11660 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11661 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11662 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11663 return;
11664
11665 wdev->chandef = *chandef;
11666 wdev->preset_chandef = *chandef;
11667 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11668 }
11669 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11670
11671 void cfg80211_cqm_txe_notify(struct net_device *dev,
11672 const u8 *peer, u32 num_packets,
11673 u32 rate, u32 intvl, gfp_t gfp)
11674 {
11675 struct wireless_dev *wdev = dev->ieee80211_ptr;
11676 struct wiphy *wiphy = wdev->wiphy;
11677 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11678 struct sk_buff *msg;
11679 struct nlattr *pinfoattr;
11680 void *hdr;
11681
11682 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11683 if (!msg)
11684 return;
11685
11686 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11687 if (!hdr) {
11688 nlmsg_free(msg);
11689 return;
11690 }
11691
11692 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11693 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11694 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11695 goto nla_put_failure;
11696
11697 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11698 if (!pinfoattr)
11699 goto nla_put_failure;
11700
11701 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11702 goto nla_put_failure;
11703
11704 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11705 goto nla_put_failure;
11706
11707 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11708 goto nla_put_failure;
11709
11710 nla_nest_end(msg, pinfoattr);
11711
11712 genlmsg_end(msg, hdr);
11713
11714 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11715 NL80211_MCGRP_MLME, gfp);
11716 return;
11717
11718 nla_put_failure:
11719 genlmsg_cancel(msg, hdr);
11720 nlmsg_free(msg);
11721 }
11722 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11723
11724 void
11725 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11726 const struct cfg80211_chan_def *chandef,
11727 enum nl80211_radar_event event,
11728 struct net_device *netdev, gfp_t gfp)
11729 {
11730 struct sk_buff *msg;
11731 void *hdr;
11732
11733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11734 if (!msg)
11735 return;
11736
11737 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11738 if (!hdr) {
11739 nlmsg_free(msg);
11740 return;
11741 }
11742
11743 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11744 goto nla_put_failure;
11745
11746 /* NOP and radar events don't need a netdev parameter */
11747 if (netdev) {
11748 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11749
11750 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11751 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11752 goto nla_put_failure;
11753 }
11754
11755 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11756 goto nla_put_failure;
11757
11758 if (nl80211_send_chandef(msg, chandef))
11759 goto nla_put_failure;
11760
11761 genlmsg_end(msg, hdr);
11762
11763 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11764 NL80211_MCGRP_MLME, gfp);
11765 return;
11766
11767 nla_put_failure:
11768 genlmsg_cancel(msg, hdr);
11769 nlmsg_free(msg);
11770 }
11771
11772 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11773 const u8 *peer, u32 num_packets, gfp_t gfp)
11774 {
11775 struct wireless_dev *wdev = dev->ieee80211_ptr;
11776 struct wiphy *wiphy = wdev->wiphy;
11777 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11778 struct sk_buff *msg;
11779 struct nlattr *pinfoattr;
11780 void *hdr;
11781
11782 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11783
11784 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11785 if (!msg)
11786 return;
11787
11788 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11789 if (!hdr) {
11790 nlmsg_free(msg);
11791 return;
11792 }
11793
11794 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11795 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11796 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11797 goto nla_put_failure;
11798
11799 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11800 if (!pinfoattr)
11801 goto nla_put_failure;
11802
11803 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11804 goto nla_put_failure;
11805
11806 nla_nest_end(msg, pinfoattr);
11807
11808 genlmsg_end(msg, hdr);
11809
11810 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11811 NL80211_MCGRP_MLME, gfp);
11812 return;
11813
11814 nla_put_failure:
11815 genlmsg_cancel(msg, hdr);
11816 nlmsg_free(msg);
11817 }
11818 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11819
11820 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11821 u64 cookie, bool acked, gfp_t gfp)
11822 {
11823 struct wireless_dev *wdev = dev->ieee80211_ptr;
11824 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11825 struct sk_buff *msg;
11826 void *hdr;
11827
11828 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11829
11830 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11831
11832 if (!msg)
11833 return;
11834
11835 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11836 if (!hdr) {
11837 nlmsg_free(msg);
11838 return;
11839 }
11840
11841 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11842 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11843 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11844 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11845 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11846 goto nla_put_failure;
11847
11848 genlmsg_end(msg, hdr);
11849
11850 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11851 NL80211_MCGRP_MLME, gfp);
11852 return;
11853
11854 nla_put_failure:
11855 genlmsg_cancel(msg, hdr);
11856 nlmsg_free(msg);
11857 }
11858 EXPORT_SYMBOL(cfg80211_probe_status);
11859
11860 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11861 const u8 *frame, size_t len,
11862 int freq, int sig_dbm)
11863 {
11864 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11865 struct sk_buff *msg;
11866 void *hdr;
11867 struct cfg80211_beacon_registration *reg;
11868
11869 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11870
11871 spin_lock_bh(&rdev->beacon_registrations_lock);
11872 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11873 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11874 if (!msg) {
11875 spin_unlock_bh(&rdev->beacon_registrations_lock);
11876 return;
11877 }
11878
11879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11880 if (!hdr)
11881 goto nla_put_failure;
11882
11883 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11884 (freq &&
11885 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11886 (sig_dbm &&
11887 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11888 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11889 goto nla_put_failure;
11890
11891 genlmsg_end(msg, hdr);
11892
11893 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11894 }
11895 spin_unlock_bh(&rdev->beacon_registrations_lock);
11896 return;
11897
11898 nla_put_failure:
11899 spin_unlock_bh(&rdev->beacon_registrations_lock);
11900 if (hdr)
11901 genlmsg_cancel(msg, hdr);
11902 nlmsg_free(msg);
11903 }
11904 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11905
11906 #ifdef CONFIG_PM
11907 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11908 struct cfg80211_wowlan_wakeup *wakeup,
11909 gfp_t gfp)
11910 {
11911 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11912 struct sk_buff *msg;
11913 void *hdr;
11914 int size = 200;
11915
11916 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11917
11918 if (wakeup)
11919 size += wakeup->packet_present_len;
11920
11921 msg = nlmsg_new(size, gfp);
11922 if (!msg)
11923 return;
11924
11925 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11926 if (!hdr)
11927 goto free_msg;
11928
11929 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11930 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11931 goto free_msg;
11932
11933 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11934 wdev->netdev->ifindex))
11935 goto free_msg;
11936
11937 if (wakeup) {
11938 struct nlattr *reasons;
11939
11940 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11941 if (!reasons)
11942 goto free_msg;
11943
11944 if (wakeup->disconnect &&
11945 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11946 goto free_msg;
11947 if (wakeup->magic_pkt &&
11948 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11949 goto free_msg;
11950 if (wakeup->gtk_rekey_failure &&
11951 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11952 goto free_msg;
11953 if (wakeup->eap_identity_req &&
11954 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11955 goto free_msg;
11956 if (wakeup->four_way_handshake &&
11957 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11958 goto free_msg;
11959 if (wakeup->rfkill_release &&
11960 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11961 goto free_msg;
11962
11963 if (wakeup->pattern_idx >= 0 &&
11964 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11965 wakeup->pattern_idx))
11966 goto free_msg;
11967
11968 if (wakeup->tcp_match &&
11969 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11970 goto free_msg;
11971
11972 if (wakeup->tcp_connlost &&
11973 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11974 goto free_msg;
11975
11976 if (wakeup->tcp_nomoretokens &&
11977 nla_put_flag(msg,
11978 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11979 goto free_msg;
11980
11981 if (wakeup->packet) {
11982 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11983 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11984
11985 if (!wakeup->packet_80211) {
11986 pkt_attr =
11987 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11988 len_attr =
11989 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11990 }
11991
11992 if (wakeup->packet_len &&
11993 nla_put_u32(msg, len_attr, wakeup->packet_len))
11994 goto free_msg;
11995
11996 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11997 wakeup->packet))
11998 goto free_msg;
11999 }
12000
12001 nla_nest_end(msg, reasons);
12002 }
12003
12004 genlmsg_end(msg, hdr);
12005
12006 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12007 NL80211_MCGRP_MLME, gfp);
12008 return;
12009
12010 free_msg:
12011 nlmsg_free(msg);
12012 }
12013 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12014 #endif
12015
12016 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12017 enum nl80211_tdls_operation oper,
12018 u16 reason_code, gfp_t gfp)
12019 {
12020 struct wireless_dev *wdev = dev->ieee80211_ptr;
12021 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12022 struct sk_buff *msg;
12023 void *hdr;
12024
12025 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12026 reason_code);
12027
12028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12029 if (!msg)
12030 return;
12031
12032 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12033 if (!hdr) {
12034 nlmsg_free(msg);
12035 return;
12036 }
12037
12038 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12039 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12040 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12041 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12042 (reason_code > 0 &&
12043 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12044 goto nla_put_failure;
12045
12046 genlmsg_end(msg, hdr);
12047
12048 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12049 NL80211_MCGRP_MLME, gfp);
12050 return;
12051
12052 nla_put_failure:
12053 genlmsg_cancel(msg, hdr);
12054 nlmsg_free(msg);
12055 }
12056 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12057
12058 static int nl80211_netlink_notify(struct notifier_block * nb,
12059 unsigned long state,
12060 void *_notify)
12061 {
12062 struct netlink_notify *notify = _notify;
12063 struct cfg80211_registered_device *rdev;
12064 struct wireless_dev *wdev;
12065 struct cfg80211_beacon_registration *reg, *tmp;
12066
12067 if (state != NETLINK_URELEASE)
12068 return NOTIFY_DONE;
12069
12070 rcu_read_lock();
12071
12072 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12073 bool schedule_destroy_work = false;
12074
12075 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12076 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12077
12078 if (wdev->owner_nlportid == notify->portid)
12079 schedule_destroy_work = true;
12080 }
12081
12082 spin_lock_bh(&rdev->beacon_registrations_lock);
12083 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12084 list) {
12085 if (reg->nlportid == notify->portid) {
12086 list_del(&reg->list);
12087 kfree(reg);
12088 break;
12089 }
12090 }
12091 spin_unlock_bh(&rdev->beacon_registrations_lock);
12092
12093 if (schedule_destroy_work) {
12094 struct cfg80211_iface_destroy *destroy;
12095
12096 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12097 if (destroy) {
12098 destroy->nlportid = notify->portid;
12099 spin_lock(&rdev->destroy_list_lock);
12100 list_add(&destroy->list, &rdev->destroy_list);
12101 spin_unlock(&rdev->destroy_list_lock);
12102 schedule_work(&rdev->destroy_work);
12103 }
12104 }
12105 }
12106
12107 rcu_read_unlock();
12108
12109 return NOTIFY_OK;
12110 }
12111
12112 static struct notifier_block nl80211_netlink_notifier = {
12113 .notifier_call = nl80211_netlink_notify,
12114 };
12115
12116 void cfg80211_ft_event(struct net_device *netdev,
12117 struct cfg80211_ft_event_params *ft_event)
12118 {
12119 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12120 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12121 struct sk_buff *msg;
12122 void *hdr;
12123
12124 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12125
12126 if (!ft_event->target_ap)
12127 return;
12128
12129 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12130 if (!msg)
12131 return;
12132
12133 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12134 if (!hdr)
12135 goto out;
12136
12137 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12138 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12139 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12140 goto out;
12141
12142 if (ft_event->ies &&
12143 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12144 goto out;
12145 if (ft_event->ric_ies &&
12146 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12147 ft_event->ric_ies))
12148 goto out;
12149
12150 genlmsg_end(msg, hdr);
12151
12152 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12153 NL80211_MCGRP_MLME, GFP_KERNEL);
12154 return;
12155 out:
12156 nlmsg_free(msg);
12157 }
12158 EXPORT_SYMBOL(cfg80211_ft_event);
12159
12160 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12161 {
12162 struct cfg80211_registered_device *rdev;
12163 struct sk_buff *msg;
12164 void *hdr;
12165 u32 nlportid;
12166
12167 rdev = wiphy_to_rdev(wdev->wiphy);
12168 if (!rdev->crit_proto_nlportid)
12169 return;
12170
12171 nlportid = rdev->crit_proto_nlportid;
12172 rdev->crit_proto_nlportid = 0;
12173
12174 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12175 if (!msg)
12176 return;
12177
12178 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12179 if (!hdr)
12180 goto nla_put_failure;
12181
12182 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12183 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12184 goto nla_put_failure;
12185
12186 genlmsg_end(msg, hdr);
12187
12188 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12189 return;
12190
12191 nla_put_failure:
12192 if (hdr)
12193 genlmsg_cancel(msg, hdr);
12194 nlmsg_free(msg);
12195
12196 }
12197 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12198
12199 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12200 {
12201 struct wiphy *wiphy = wdev->wiphy;
12202 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12203 struct sk_buff *msg;
12204 void *hdr;
12205
12206 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12207 if (!msg)
12208 return;
12209
12210 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12211 if (!hdr)
12212 goto out;
12213
12214 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12215 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12216 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12217 goto out;
12218
12219 genlmsg_end(msg, hdr);
12220
12221 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12222 NL80211_MCGRP_MLME, GFP_KERNEL);
12223 return;
12224 out:
12225 nlmsg_free(msg);
12226 }
12227
12228 /* initialisation/exit functions */
12229
12230 int nl80211_init(void)
12231 {
12232 int err;
12233
12234 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12235 nl80211_mcgrps);
12236 if (err)
12237 return err;
12238
12239 err = netlink_register_notifier(&nl80211_netlink_notifier);
12240 if (err)
12241 goto err_out;
12242
12243 return 0;
12244 err_out:
12245 genl_unregister_family(&nl80211_fam);
12246 return err;
12247 }
12248
12249 void nl80211_exit(void)
12250 {
12251 netlink_unregister_notifier(&nl80211_netlink_notifier);
12252 genl_unregister_family(&nl80211_fam);
12253 }
Linux kernel - Deliverables
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