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Merge tag 'mac80211-next-for-davem-2015-02-03' of git://git.kernel.org/pub/scm/linux...
[mirror_ubuntu-artful-kernel.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
400 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
401 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
402 };
403
404 /* policy for the key attributes */
405 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
406 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
407 [NL80211_KEY_IDX] = { .type = NLA_U8 },
408 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
409 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
410 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
411 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
412 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
413 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
414 };
415
416 /* policy for the key default flags */
417 static const struct nla_policy
418 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
419 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
420 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
421 };
422
423 /* policy for WoWLAN attributes */
424 static const struct nla_policy
425 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
426 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
430 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
431 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
433 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
435 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
436 };
437
438 static const struct nla_policy
439 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
440 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
441 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
442 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
443 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
444 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
445 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
447 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
448 },
449 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
450 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
451 },
452 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
453 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
454 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
455 };
456
457 /* policy for coalesce rule attributes */
458 static const struct nla_policy
459 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
460 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
461 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
462 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
463 };
464
465 /* policy for GTK rekey offload attributes */
466 static const struct nla_policy
467 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
468 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
469 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
470 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
471 };
472
473 static const struct nla_policy
474 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
475 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
476 .len = IEEE80211_MAX_SSID_LEN },
477 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
478 };
479
480 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
481 struct netlink_callback *cb,
482 struct cfg80211_registered_device **rdev,
483 struct wireless_dev **wdev)
484 {
485 int err;
486
487 rtnl_lock();
488
489 if (!cb->args[0]) {
490 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
491 nl80211_fam.attrbuf, nl80211_fam.maxattr,
492 nl80211_policy);
493 if (err)
494 goto out_unlock;
495
496 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
497 nl80211_fam.attrbuf);
498 if (IS_ERR(*wdev)) {
499 err = PTR_ERR(*wdev);
500 goto out_unlock;
501 }
502 *rdev = wiphy_to_rdev((*wdev)->wiphy);
503 /* 0 is the first index - add 1 to parse only once */
504 cb->args[0] = (*rdev)->wiphy_idx + 1;
505 cb->args[1] = (*wdev)->identifier;
506 } else {
507 /* subtract the 1 again here */
508 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
509 struct wireless_dev *tmp;
510
511 if (!wiphy) {
512 err = -ENODEV;
513 goto out_unlock;
514 }
515 *rdev = wiphy_to_rdev(wiphy);
516 *wdev = NULL;
517
518 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
519 if (tmp->identifier == cb->args[1]) {
520 *wdev = tmp;
521 break;
522 }
523 }
524
525 if (!*wdev) {
526 err = -ENODEV;
527 goto out_unlock;
528 }
529 }
530
531 return 0;
532 out_unlock:
533 rtnl_unlock();
534 return err;
535 }
536
537 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
538 {
539 rtnl_unlock();
540 }
541
542 /* IE validation */
543 static bool is_valid_ie_attr(const struct nlattr *attr)
544 {
545 const u8 *pos;
546 int len;
547
548 if (!attr)
549 return true;
550
551 pos = nla_data(attr);
552 len = nla_len(attr);
553
554 while (len) {
555 u8 elemlen;
556
557 if (len < 2)
558 return false;
559 len -= 2;
560
561 elemlen = pos[1];
562 if (elemlen > len)
563 return false;
564
565 len -= elemlen;
566 pos += 2 + elemlen;
567 }
568
569 return true;
570 }
571
572 /* message building helper */
573 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
574 int flags, u8 cmd)
575 {
576 /* since there is no private header just add the generic one */
577 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
578 }
579
580 static int nl80211_msg_put_channel(struct sk_buff *msg,
581 struct ieee80211_channel *chan,
582 bool large)
583 {
584 /* Some channels must be completely excluded from the
585 * list to protect old user-space tools from breaking
586 */
587 if (!large && chan->flags &
588 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
589 return 0;
590
591 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
592 chan->center_freq))
593 goto nla_put_failure;
594
595 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
596 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
597 goto nla_put_failure;
598 if (chan->flags & IEEE80211_CHAN_NO_IR) {
599 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
600 goto nla_put_failure;
601 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
602 goto nla_put_failure;
603 }
604 if (chan->flags & IEEE80211_CHAN_RADAR) {
605 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
606 goto nla_put_failure;
607 if (large) {
608 u32 time;
609
610 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
611
612 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
613 chan->dfs_state))
614 goto nla_put_failure;
615 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
616 time))
617 goto nla_put_failure;
618 if (nla_put_u32(msg,
619 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
620 chan->dfs_cac_ms))
621 goto nla_put_failure;
622 }
623 }
624
625 if (large) {
626 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
627 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
628 goto nla_put_failure;
629 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
630 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
631 goto nla_put_failure;
632 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
633 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
634 goto nla_put_failure;
635 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
637 goto nla_put_failure;
638 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
639 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
640 goto nla_put_failure;
641 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
642 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
643 goto nla_put_failure;
644 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
645 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
646 goto nla_put_failure;
647 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
648 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
649 goto nla_put_failure;
650 }
651
652 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
653 DBM_TO_MBM(chan->max_power)))
654 goto nla_put_failure;
655
656 return 0;
657
658 nla_put_failure:
659 return -ENOBUFS;
660 }
661
662 /* netlink command implementations */
663
664 struct key_parse {
665 struct key_params p;
666 int idx;
667 int type;
668 bool def, defmgmt;
669 bool def_uni, def_multi;
670 };
671
672 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
673 {
674 struct nlattr *tb[NL80211_KEY_MAX + 1];
675 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
676 nl80211_key_policy);
677 if (err)
678 return err;
679
680 k->def = !!tb[NL80211_KEY_DEFAULT];
681 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
682
683 if (k->def) {
684 k->def_uni = true;
685 k->def_multi = true;
686 }
687 if (k->defmgmt)
688 k->def_multi = true;
689
690 if (tb[NL80211_KEY_IDX])
691 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
692
693 if (tb[NL80211_KEY_DATA]) {
694 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
695 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
696 }
697
698 if (tb[NL80211_KEY_SEQ]) {
699 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
700 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
701 }
702
703 if (tb[NL80211_KEY_CIPHER])
704 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
705
706 if (tb[NL80211_KEY_TYPE]) {
707 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
708 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
709 return -EINVAL;
710 }
711
712 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
713 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
714 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
715 tb[NL80211_KEY_DEFAULT_TYPES],
716 nl80211_key_default_policy);
717 if (err)
718 return err;
719
720 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
721 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
722 }
723
724 return 0;
725 }
726
727 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
728 {
729 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
730 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
731 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
732 }
733
734 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
735 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
736 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
737 }
738
739 if (info->attrs[NL80211_ATTR_KEY_IDX])
740 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
741
742 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
743 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
744
745 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
746 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
747
748 if (k->def) {
749 k->def_uni = true;
750 k->def_multi = true;
751 }
752 if (k->defmgmt)
753 k->def_multi = true;
754
755 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
756 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
757 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
758 return -EINVAL;
759 }
760
761 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
762 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
763 int err = nla_parse_nested(
764 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
765 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
766 nl80211_key_default_policy);
767 if (err)
768 return err;
769
770 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
771 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
772 }
773
774 return 0;
775 }
776
777 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
778 {
779 int err;
780
781 memset(k, 0, sizeof(*k));
782 k->idx = -1;
783 k->type = -1;
784
785 if (info->attrs[NL80211_ATTR_KEY])
786 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
787 else
788 err = nl80211_parse_key_old(info, k);
789
790 if (err)
791 return err;
792
793 if (k->def && k->defmgmt)
794 return -EINVAL;
795
796 if (k->defmgmt) {
797 if (k->def_uni || !k->def_multi)
798 return -EINVAL;
799 }
800
801 if (k->idx != -1) {
802 if (k->defmgmt) {
803 if (k->idx < 4 || k->idx > 5)
804 return -EINVAL;
805 } else if (k->def) {
806 if (k->idx < 0 || k->idx > 3)
807 return -EINVAL;
808 } else {
809 if (k->idx < 0 || k->idx > 5)
810 return -EINVAL;
811 }
812 }
813
814 return 0;
815 }
816
817 static struct cfg80211_cached_keys *
818 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
819 struct nlattr *keys, bool *no_ht)
820 {
821 struct key_parse parse;
822 struct nlattr *key;
823 struct cfg80211_cached_keys *result;
824 int rem, err, def = 0;
825
826 result = kzalloc(sizeof(*result), GFP_KERNEL);
827 if (!result)
828 return ERR_PTR(-ENOMEM);
829
830 result->def = -1;
831 result->defmgmt = -1;
832
833 nla_for_each_nested(key, keys, rem) {
834 memset(&parse, 0, sizeof(parse));
835 parse.idx = -1;
836
837 err = nl80211_parse_key_new(key, &parse);
838 if (err)
839 goto error;
840 err = -EINVAL;
841 if (!parse.p.key)
842 goto error;
843 if (parse.idx < 0 || parse.idx > 4)
844 goto error;
845 if (parse.def) {
846 if (def)
847 goto error;
848 def = 1;
849 result->def = parse.idx;
850 if (!parse.def_uni || !parse.def_multi)
851 goto error;
852 } else if (parse.defmgmt)
853 goto error;
854 err = cfg80211_validate_key_settings(rdev, &parse.p,
855 parse.idx, false, NULL);
856 if (err)
857 goto error;
858 result->params[parse.idx].cipher = parse.p.cipher;
859 result->params[parse.idx].key_len = parse.p.key_len;
860 result->params[parse.idx].key = result->data[parse.idx];
861 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
862
863 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
864 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
865 if (no_ht)
866 *no_ht = true;
867 }
868 }
869
870 return result;
871 error:
872 kfree(result);
873 return ERR_PTR(err);
874 }
875
876 static int nl80211_key_allowed(struct wireless_dev *wdev)
877 {
878 ASSERT_WDEV_LOCK(wdev);
879
880 switch (wdev->iftype) {
881 case NL80211_IFTYPE_AP:
882 case NL80211_IFTYPE_AP_VLAN:
883 case NL80211_IFTYPE_P2P_GO:
884 case NL80211_IFTYPE_MESH_POINT:
885 break;
886 case NL80211_IFTYPE_ADHOC:
887 case NL80211_IFTYPE_STATION:
888 case NL80211_IFTYPE_P2P_CLIENT:
889 if (!wdev->current_bss)
890 return -ENOLINK;
891 break;
892 case NL80211_IFTYPE_UNSPECIFIED:
893 case NL80211_IFTYPE_OCB:
894 case NL80211_IFTYPE_MONITOR:
895 case NL80211_IFTYPE_P2P_DEVICE:
896 case NL80211_IFTYPE_WDS:
897 case NUM_NL80211_IFTYPES:
898 return -EINVAL;
899 }
900
901 return 0;
902 }
903
904 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
905 struct nlattr *tb)
906 {
907 struct ieee80211_channel *chan;
908
909 if (tb == NULL)
910 return NULL;
911 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
912 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
913 return NULL;
914 return chan;
915 }
916
917 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
918 {
919 struct nlattr *nl_modes = nla_nest_start(msg, attr);
920 int i;
921
922 if (!nl_modes)
923 goto nla_put_failure;
924
925 i = 0;
926 while (ifmodes) {
927 if ((ifmodes & 1) && nla_put_flag(msg, i))
928 goto nla_put_failure;
929 ifmodes >>= 1;
930 i++;
931 }
932
933 nla_nest_end(msg, nl_modes);
934 return 0;
935
936 nla_put_failure:
937 return -ENOBUFS;
938 }
939
940 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
941 struct sk_buff *msg,
942 bool large)
943 {
944 struct nlattr *nl_combis;
945 int i, j;
946
947 nl_combis = nla_nest_start(msg,
948 NL80211_ATTR_INTERFACE_COMBINATIONS);
949 if (!nl_combis)
950 goto nla_put_failure;
951
952 for (i = 0; i < wiphy->n_iface_combinations; i++) {
953 const struct ieee80211_iface_combination *c;
954 struct nlattr *nl_combi, *nl_limits;
955
956 c = &wiphy->iface_combinations[i];
957
958 nl_combi = nla_nest_start(msg, i + 1);
959 if (!nl_combi)
960 goto nla_put_failure;
961
962 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
963 if (!nl_limits)
964 goto nla_put_failure;
965
966 for (j = 0; j < c->n_limits; j++) {
967 struct nlattr *nl_limit;
968
969 nl_limit = nla_nest_start(msg, j + 1);
970 if (!nl_limit)
971 goto nla_put_failure;
972 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
973 c->limits[j].max))
974 goto nla_put_failure;
975 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
976 c->limits[j].types))
977 goto nla_put_failure;
978 nla_nest_end(msg, nl_limit);
979 }
980
981 nla_nest_end(msg, nl_limits);
982
983 if (c->beacon_int_infra_match &&
984 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
985 goto nla_put_failure;
986 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
987 c->num_different_channels) ||
988 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
989 c->max_interfaces))
990 goto nla_put_failure;
991 if (large &&
992 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
993 c->radar_detect_widths) ||
994 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
995 c->radar_detect_regions)))
996 goto nla_put_failure;
997
998 nla_nest_end(msg, nl_combi);
999 }
1000
1001 nla_nest_end(msg, nl_combis);
1002
1003 return 0;
1004 nla_put_failure:
1005 return -ENOBUFS;
1006 }
1007
1008 #ifdef CONFIG_PM
1009 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1010 struct sk_buff *msg)
1011 {
1012 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1013 struct nlattr *nl_tcp;
1014
1015 if (!tcp)
1016 return 0;
1017
1018 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1019 if (!nl_tcp)
1020 return -ENOBUFS;
1021
1022 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1023 tcp->data_payload_max))
1024 return -ENOBUFS;
1025
1026 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1027 tcp->data_payload_max))
1028 return -ENOBUFS;
1029
1030 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1031 return -ENOBUFS;
1032
1033 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1034 sizeof(*tcp->tok), tcp->tok))
1035 return -ENOBUFS;
1036
1037 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1038 tcp->data_interval_max))
1039 return -ENOBUFS;
1040
1041 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1042 tcp->wake_payload_max))
1043 return -ENOBUFS;
1044
1045 nla_nest_end(msg, nl_tcp);
1046 return 0;
1047 }
1048
1049 static int nl80211_send_wowlan(struct sk_buff *msg,
1050 struct cfg80211_registered_device *rdev,
1051 bool large)
1052 {
1053 struct nlattr *nl_wowlan;
1054
1055 if (!rdev->wiphy.wowlan)
1056 return 0;
1057
1058 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1059 if (!nl_wowlan)
1060 return -ENOBUFS;
1061
1062 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1068 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1070 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1071 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1072 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1073 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1074 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1076 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1077 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1078 return -ENOBUFS;
1079
1080 if (rdev->wiphy.wowlan->n_patterns) {
1081 struct nl80211_pattern_support pat = {
1082 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1083 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1084 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1085 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1086 };
1087
1088 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1089 sizeof(pat), &pat))
1090 return -ENOBUFS;
1091 }
1092
1093 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1094 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1095 rdev->wiphy.wowlan->max_nd_match_sets))
1096 return -ENOBUFS;
1097
1098 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1099 return -ENOBUFS;
1100
1101 /* TODO: send wowlan net detect */
1102
1103 nla_nest_end(msg, nl_wowlan);
1104
1105 return 0;
1106 }
1107 #endif
1108
1109 static int nl80211_send_coalesce(struct sk_buff *msg,
1110 struct cfg80211_registered_device *rdev)
1111 {
1112 struct nl80211_coalesce_rule_support rule;
1113
1114 if (!rdev->wiphy.coalesce)
1115 return 0;
1116
1117 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1118 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1119 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1120 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1121 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1122 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1123
1124 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1125 return -ENOBUFS;
1126
1127 return 0;
1128 }
1129
1130 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1131 struct ieee80211_supported_band *sband)
1132 {
1133 struct nlattr *nl_rates, *nl_rate;
1134 struct ieee80211_rate *rate;
1135 int i;
1136
1137 /* add HT info */
1138 if (sband->ht_cap.ht_supported &&
1139 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1140 sizeof(sband->ht_cap.mcs),
1141 &sband->ht_cap.mcs) ||
1142 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1143 sband->ht_cap.cap) ||
1144 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1145 sband->ht_cap.ampdu_factor) ||
1146 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1147 sband->ht_cap.ampdu_density)))
1148 return -ENOBUFS;
1149
1150 /* add VHT info */
1151 if (sband->vht_cap.vht_supported &&
1152 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1153 sizeof(sband->vht_cap.vht_mcs),
1154 &sband->vht_cap.vht_mcs) ||
1155 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1156 sband->vht_cap.cap)))
1157 return -ENOBUFS;
1158
1159 /* add bitrates */
1160 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1161 if (!nl_rates)
1162 return -ENOBUFS;
1163
1164 for (i = 0; i < sband->n_bitrates; i++) {
1165 nl_rate = nla_nest_start(msg, i);
1166 if (!nl_rate)
1167 return -ENOBUFS;
1168
1169 rate = &sband->bitrates[i];
1170 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1171 rate->bitrate))
1172 return -ENOBUFS;
1173 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1174 nla_put_flag(msg,
1175 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1176 return -ENOBUFS;
1177
1178 nla_nest_end(msg, nl_rate);
1179 }
1180
1181 nla_nest_end(msg, nl_rates);
1182
1183 return 0;
1184 }
1185
1186 static int
1187 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1188 const struct ieee80211_txrx_stypes *mgmt_stypes)
1189 {
1190 u16 stypes;
1191 struct nlattr *nl_ftypes, *nl_ifs;
1192 enum nl80211_iftype ift;
1193 int i;
1194
1195 if (!mgmt_stypes)
1196 return 0;
1197
1198 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1199 if (!nl_ifs)
1200 return -ENOBUFS;
1201
1202 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1203 nl_ftypes = nla_nest_start(msg, ift);
1204 if (!nl_ftypes)
1205 return -ENOBUFS;
1206 i = 0;
1207 stypes = mgmt_stypes[ift].tx;
1208 while (stypes) {
1209 if ((stypes & 1) &&
1210 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1211 (i << 4) | IEEE80211_FTYPE_MGMT))
1212 return -ENOBUFS;
1213 stypes >>= 1;
1214 i++;
1215 }
1216 nla_nest_end(msg, nl_ftypes);
1217 }
1218
1219 nla_nest_end(msg, nl_ifs);
1220
1221 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1222 if (!nl_ifs)
1223 return -ENOBUFS;
1224
1225 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1226 nl_ftypes = nla_nest_start(msg, ift);
1227 if (!nl_ftypes)
1228 return -ENOBUFS;
1229 i = 0;
1230 stypes = mgmt_stypes[ift].rx;
1231 while (stypes) {
1232 if ((stypes & 1) &&
1233 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1234 (i << 4) | IEEE80211_FTYPE_MGMT))
1235 return -ENOBUFS;
1236 stypes >>= 1;
1237 i++;
1238 }
1239 nla_nest_end(msg, nl_ftypes);
1240 }
1241 nla_nest_end(msg, nl_ifs);
1242
1243 return 0;
1244 }
1245
1246 struct nl80211_dump_wiphy_state {
1247 s64 filter_wiphy;
1248 long start;
1249 long split_start, band_start, chan_start;
1250 bool split;
1251 };
1252
1253 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1254 enum nl80211_commands cmd,
1255 struct sk_buff *msg, u32 portid, u32 seq,
1256 int flags, struct nl80211_dump_wiphy_state *state)
1257 {
1258 void *hdr;
1259 struct nlattr *nl_bands, *nl_band;
1260 struct nlattr *nl_freqs, *nl_freq;
1261 struct nlattr *nl_cmds;
1262 enum ieee80211_band band;
1263 struct ieee80211_channel *chan;
1264 int i;
1265 const struct ieee80211_txrx_stypes *mgmt_stypes =
1266 rdev->wiphy.mgmt_stypes;
1267 u32 features;
1268
1269 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1270 if (!hdr)
1271 return -ENOBUFS;
1272
1273 if (WARN_ON(!state))
1274 return -EINVAL;
1275
1276 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1277 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1278 wiphy_name(&rdev->wiphy)) ||
1279 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1280 cfg80211_rdev_list_generation))
1281 goto nla_put_failure;
1282
1283 if (cmd != NL80211_CMD_NEW_WIPHY)
1284 goto finish;
1285
1286 switch (state->split_start) {
1287 case 0:
1288 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1289 rdev->wiphy.retry_short) ||
1290 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1291 rdev->wiphy.retry_long) ||
1292 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1293 rdev->wiphy.frag_threshold) ||
1294 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1295 rdev->wiphy.rts_threshold) ||
1296 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1297 rdev->wiphy.coverage_class) ||
1298 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1299 rdev->wiphy.max_scan_ssids) ||
1300 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1301 rdev->wiphy.max_sched_scan_ssids) ||
1302 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1303 rdev->wiphy.max_scan_ie_len) ||
1304 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1305 rdev->wiphy.max_sched_scan_ie_len) ||
1306 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1307 rdev->wiphy.max_match_sets))
1308 goto nla_put_failure;
1309
1310 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1311 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1312 goto nla_put_failure;
1313 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1314 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1315 goto nla_put_failure;
1316 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1317 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1318 goto nla_put_failure;
1319 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1320 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1321 goto nla_put_failure;
1322 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1323 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1324 goto nla_put_failure;
1325 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1326 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1327 goto nla_put_failure;
1328 state->split_start++;
1329 if (state->split)
1330 break;
1331 case 1:
1332 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1333 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1334 rdev->wiphy.cipher_suites))
1335 goto nla_put_failure;
1336
1337 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1338 rdev->wiphy.max_num_pmkids))
1339 goto nla_put_failure;
1340
1341 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1342 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1343 goto nla_put_failure;
1344
1345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1346 rdev->wiphy.available_antennas_tx) ||
1347 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1348 rdev->wiphy.available_antennas_rx))
1349 goto nla_put_failure;
1350
1351 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1352 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1353 rdev->wiphy.probe_resp_offload))
1354 goto nla_put_failure;
1355
1356 if ((rdev->wiphy.available_antennas_tx ||
1357 rdev->wiphy.available_antennas_rx) &&
1358 rdev->ops->get_antenna) {
1359 u32 tx_ant = 0, rx_ant = 0;
1360 int res;
1361 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1362 if (!res) {
1363 if (nla_put_u32(msg,
1364 NL80211_ATTR_WIPHY_ANTENNA_TX,
1365 tx_ant) ||
1366 nla_put_u32(msg,
1367 NL80211_ATTR_WIPHY_ANTENNA_RX,
1368 rx_ant))
1369 goto nla_put_failure;
1370 }
1371 }
1372
1373 state->split_start++;
1374 if (state->split)
1375 break;
1376 case 2:
1377 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1378 rdev->wiphy.interface_modes))
1379 goto nla_put_failure;
1380 state->split_start++;
1381 if (state->split)
1382 break;
1383 case 3:
1384 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1385 if (!nl_bands)
1386 goto nla_put_failure;
1387
1388 for (band = state->band_start;
1389 band < IEEE80211_NUM_BANDS; band++) {
1390 struct ieee80211_supported_band *sband;
1391
1392 sband = rdev->wiphy.bands[band];
1393
1394 if (!sband)
1395 continue;
1396
1397 nl_band = nla_nest_start(msg, band);
1398 if (!nl_band)
1399 goto nla_put_failure;
1400
1401 switch (state->chan_start) {
1402 case 0:
1403 if (nl80211_send_band_rateinfo(msg, sband))
1404 goto nla_put_failure;
1405 state->chan_start++;
1406 if (state->split)
1407 break;
1408 default:
1409 /* add frequencies */
1410 nl_freqs = nla_nest_start(
1411 msg, NL80211_BAND_ATTR_FREQS);
1412 if (!nl_freqs)
1413 goto nla_put_failure;
1414
1415 for (i = state->chan_start - 1;
1416 i < sband->n_channels;
1417 i++) {
1418 nl_freq = nla_nest_start(msg, i);
1419 if (!nl_freq)
1420 goto nla_put_failure;
1421
1422 chan = &sband->channels[i];
1423
1424 if (nl80211_msg_put_channel(
1425 msg, chan,
1426 state->split))
1427 goto nla_put_failure;
1428
1429 nla_nest_end(msg, nl_freq);
1430 if (state->split)
1431 break;
1432 }
1433 if (i < sband->n_channels)
1434 state->chan_start = i + 2;
1435 else
1436 state->chan_start = 0;
1437 nla_nest_end(msg, nl_freqs);
1438 }
1439
1440 nla_nest_end(msg, nl_band);
1441
1442 if (state->split) {
1443 /* start again here */
1444 if (state->chan_start)
1445 band--;
1446 break;
1447 }
1448 }
1449 nla_nest_end(msg, nl_bands);
1450
1451 if (band < IEEE80211_NUM_BANDS)
1452 state->band_start = band + 1;
1453 else
1454 state->band_start = 0;
1455
1456 /* if bands & channels are done, continue outside */
1457 if (state->band_start == 0 && state->chan_start == 0)
1458 state->split_start++;
1459 if (state->split)
1460 break;
1461 case 4:
1462 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1463 if (!nl_cmds)
1464 goto nla_put_failure;
1465
1466 i = 0;
1467 #define CMD(op, n) \
1468 do { \
1469 if (rdev->ops->op) { \
1470 i++; \
1471 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1472 goto nla_put_failure; \
1473 } \
1474 } while (0)
1475
1476 CMD(add_virtual_intf, NEW_INTERFACE);
1477 CMD(change_virtual_intf, SET_INTERFACE);
1478 CMD(add_key, NEW_KEY);
1479 CMD(start_ap, START_AP);
1480 CMD(add_station, NEW_STATION);
1481 CMD(add_mpath, NEW_MPATH);
1482 CMD(update_mesh_config, SET_MESH_CONFIG);
1483 CMD(change_bss, SET_BSS);
1484 CMD(auth, AUTHENTICATE);
1485 CMD(assoc, ASSOCIATE);
1486 CMD(deauth, DEAUTHENTICATE);
1487 CMD(disassoc, DISASSOCIATE);
1488 CMD(join_ibss, JOIN_IBSS);
1489 CMD(join_mesh, JOIN_MESH);
1490 CMD(set_pmksa, SET_PMKSA);
1491 CMD(del_pmksa, DEL_PMKSA);
1492 CMD(flush_pmksa, FLUSH_PMKSA);
1493 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1494 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1495 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1496 CMD(mgmt_tx, FRAME);
1497 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1498 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1499 i++;
1500 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1501 goto nla_put_failure;
1502 }
1503 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1504 rdev->ops->join_mesh) {
1505 i++;
1506 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1507 goto nla_put_failure;
1508 }
1509 CMD(set_wds_peer, SET_WDS_PEER);
1510 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1511 CMD(tdls_mgmt, TDLS_MGMT);
1512 CMD(tdls_oper, TDLS_OPER);
1513 }
1514 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1515 CMD(sched_scan_start, START_SCHED_SCAN);
1516 CMD(probe_client, PROBE_CLIENT);
1517 CMD(set_noack_map, SET_NOACK_MAP);
1518 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1519 i++;
1520 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1521 goto nla_put_failure;
1522 }
1523 CMD(start_p2p_device, START_P2P_DEVICE);
1524 CMD(set_mcast_rate, SET_MCAST_RATE);
1525 #ifdef CONFIG_NL80211_TESTMODE
1526 CMD(testmode_cmd, TESTMODE);
1527 #endif
1528 if (state->split) {
1529 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1530 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1531 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1532 CMD(channel_switch, CHANNEL_SWITCH);
1533 CMD(set_qos_map, SET_QOS_MAP);
1534 if (rdev->wiphy.features &
1535 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1536 CMD(add_tx_ts, ADD_TX_TS);
1537 }
1538 /* add into the if now */
1539 #undef CMD
1540
1541 if (rdev->ops->connect || rdev->ops->auth) {
1542 i++;
1543 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1544 goto nla_put_failure;
1545 }
1546
1547 if (rdev->ops->disconnect || rdev->ops->deauth) {
1548 i++;
1549 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1550 goto nla_put_failure;
1551 }
1552
1553 nla_nest_end(msg, nl_cmds);
1554 state->split_start++;
1555 if (state->split)
1556 break;
1557 case 5:
1558 if (rdev->ops->remain_on_channel &&
1559 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1560 nla_put_u32(msg,
1561 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1562 rdev->wiphy.max_remain_on_channel_duration))
1563 goto nla_put_failure;
1564
1565 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1566 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1567 goto nla_put_failure;
1568
1569 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1570 goto nla_put_failure;
1571 state->split_start++;
1572 if (state->split)
1573 break;
1574 case 6:
1575 #ifdef CONFIG_PM
1576 if (nl80211_send_wowlan(msg, rdev, state->split))
1577 goto nla_put_failure;
1578 state->split_start++;
1579 if (state->split)
1580 break;
1581 #else
1582 state->split_start++;
1583 #endif
1584 case 7:
1585 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1586 rdev->wiphy.software_iftypes))
1587 goto nla_put_failure;
1588
1589 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1590 state->split))
1591 goto nla_put_failure;
1592
1593 state->split_start++;
1594 if (state->split)
1595 break;
1596 case 8:
1597 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1598 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1599 rdev->wiphy.ap_sme_capa))
1600 goto nla_put_failure;
1601
1602 features = rdev->wiphy.features;
1603 /*
1604 * We can only add the per-channel limit information if the
1605 * dump is split, otherwise it makes it too big. Therefore
1606 * only advertise it in that case.
1607 */
1608 if (state->split)
1609 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1610 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1611 goto nla_put_failure;
1612
1613 if (rdev->wiphy.ht_capa_mod_mask &&
1614 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1615 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1616 rdev->wiphy.ht_capa_mod_mask))
1617 goto nla_put_failure;
1618
1619 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1620 rdev->wiphy.max_acl_mac_addrs &&
1621 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1622 rdev->wiphy.max_acl_mac_addrs))
1623 goto nla_put_failure;
1624
1625 /*
1626 * Any information below this point is only available to
1627 * applications that can deal with it being split. This
1628 * helps ensure that newly added capabilities don't break
1629 * older tools by overrunning their buffers.
1630 *
1631 * We still increment split_start so that in the split
1632 * case we'll continue with more data in the next round,
1633 * but break unconditionally so unsplit data stops here.
1634 */
1635 state->split_start++;
1636 break;
1637 case 9:
1638 if (rdev->wiphy.extended_capabilities &&
1639 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1640 rdev->wiphy.extended_capabilities_len,
1641 rdev->wiphy.extended_capabilities) ||
1642 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1643 rdev->wiphy.extended_capabilities_len,
1644 rdev->wiphy.extended_capabilities_mask)))
1645 goto nla_put_failure;
1646
1647 if (rdev->wiphy.vht_capa_mod_mask &&
1648 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1649 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1650 rdev->wiphy.vht_capa_mod_mask))
1651 goto nla_put_failure;
1652
1653 state->split_start++;
1654 break;
1655 case 10:
1656 if (nl80211_send_coalesce(msg, rdev))
1657 goto nla_put_failure;
1658
1659 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1660 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1661 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1662 goto nla_put_failure;
1663
1664 if (rdev->wiphy.max_ap_assoc_sta &&
1665 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1666 rdev->wiphy.max_ap_assoc_sta))
1667 goto nla_put_failure;
1668
1669 state->split_start++;
1670 break;
1671 case 11:
1672 if (rdev->wiphy.n_vendor_commands) {
1673 const struct nl80211_vendor_cmd_info *info;
1674 struct nlattr *nested;
1675
1676 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1677 if (!nested)
1678 goto nla_put_failure;
1679
1680 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1681 info = &rdev->wiphy.vendor_commands[i].info;
1682 if (nla_put(msg, i + 1, sizeof(*info), info))
1683 goto nla_put_failure;
1684 }
1685 nla_nest_end(msg, nested);
1686 }
1687
1688 if (rdev->wiphy.n_vendor_events) {
1689 const struct nl80211_vendor_cmd_info *info;
1690 struct nlattr *nested;
1691
1692 nested = nla_nest_start(msg,
1693 NL80211_ATTR_VENDOR_EVENTS);
1694 if (!nested)
1695 goto nla_put_failure;
1696
1697 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1698 info = &rdev->wiphy.vendor_events[i];
1699 if (nla_put(msg, i + 1, sizeof(*info), info))
1700 goto nla_put_failure;
1701 }
1702 nla_nest_end(msg, nested);
1703 }
1704 state->split_start++;
1705 break;
1706 case 12:
1707 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1708 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1709 rdev->wiphy.max_num_csa_counters))
1710 goto nla_put_failure;
1711
1712 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1713 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1714 goto nla_put_failure;
1715
1716 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1717 sizeof(rdev->wiphy.ext_features),
1718 rdev->wiphy.ext_features))
1719 goto nla_put_failure;
1720
1721 /* done */
1722 state->split_start = 0;
1723 break;
1724 }
1725 finish:
1726 genlmsg_end(msg, hdr);
1727 return 0;
1728
1729 nla_put_failure:
1730 genlmsg_cancel(msg, hdr);
1731 return -EMSGSIZE;
1732 }
1733
1734 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1735 struct netlink_callback *cb,
1736 struct nl80211_dump_wiphy_state *state)
1737 {
1738 struct nlattr **tb = nl80211_fam.attrbuf;
1739 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1740 tb, nl80211_fam.maxattr, nl80211_policy);
1741 /* ignore parse errors for backward compatibility */
1742 if (ret)
1743 return 0;
1744
1745 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1746 if (tb[NL80211_ATTR_WIPHY])
1747 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1748 if (tb[NL80211_ATTR_WDEV])
1749 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1750 if (tb[NL80211_ATTR_IFINDEX]) {
1751 struct net_device *netdev;
1752 struct cfg80211_registered_device *rdev;
1753 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1754
1755 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1756 if (!netdev)
1757 return -ENODEV;
1758 if (netdev->ieee80211_ptr) {
1759 rdev = wiphy_to_rdev(
1760 netdev->ieee80211_ptr->wiphy);
1761 state->filter_wiphy = rdev->wiphy_idx;
1762 }
1763 }
1764
1765 return 0;
1766 }
1767
1768 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1769 {
1770 int idx = 0, ret;
1771 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1772 struct cfg80211_registered_device *rdev;
1773
1774 rtnl_lock();
1775 if (!state) {
1776 state = kzalloc(sizeof(*state), GFP_KERNEL);
1777 if (!state) {
1778 rtnl_unlock();
1779 return -ENOMEM;
1780 }
1781 state->filter_wiphy = -1;
1782 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1783 if (ret) {
1784 kfree(state);
1785 rtnl_unlock();
1786 return ret;
1787 }
1788 cb->args[0] = (long)state;
1789 }
1790
1791 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1792 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1793 continue;
1794 if (++idx <= state->start)
1795 continue;
1796 if (state->filter_wiphy != -1 &&
1797 state->filter_wiphy != rdev->wiphy_idx)
1798 continue;
1799 /* attempt to fit multiple wiphy data chunks into the skb */
1800 do {
1801 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1802 skb,
1803 NETLINK_CB(cb->skb).portid,
1804 cb->nlh->nlmsg_seq,
1805 NLM_F_MULTI, state);
1806 if (ret < 0) {
1807 /*
1808 * If sending the wiphy data didn't fit (ENOBUFS
1809 * or EMSGSIZE returned), this SKB is still
1810 * empty (so it's not too big because another
1811 * wiphy dataset is already in the skb) and
1812 * we've not tried to adjust the dump allocation
1813 * yet ... then adjust the alloc size to be
1814 * bigger, and return 1 but with the empty skb.
1815 * This results in an empty message being RX'ed
1816 * in userspace, but that is ignored.
1817 *
1818 * We can then retry with the larger buffer.
1819 */
1820 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1821 !skb->len && !state->split &&
1822 cb->min_dump_alloc < 4096) {
1823 cb->min_dump_alloc = 4096;
1824 state->split_start = 0;
1825 rtnl_unlock();
1826 return 1;
1827 }
1828 idx--;
1829 break;
1830 }
1831 } while (state->split_start > 0);
1832 break;
1833 }
1834 rtnl_unlock();
1835
1836 state->start = idx;
1837
1838 return skb->len;
1839 }
1840
1841 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1842 {
1843 kfree((void *)cb->args[0]);
1844 return 0;
1845 }
1846
1847 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1848 {
1849 struct sk_buff *msg;
1850 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1851 struct nl80211_dump_wiphy_state state = {};
1852
1853 msg = nlmsg_new(4096, GFP_KERNEL);
1854 if (!msg)
1855 return -ENOMEM;
1856
1857 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1858 info->snd_portid, info->snd_seq, 0,
1859 &state) < 0) {
1860 nlmsg_free(msg);
1861 return -ENOBUFS;
1862 }
1863
1864 return genlmsg_reply(msg, info);
1865 }
1866
1867 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1868 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1869 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1870 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1871 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1872 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1873 };
1874
1875 static int parse_txq_params(struct nlattr *tb[],
1876 struct ieee80211_txq_params *txq_params)
1877 {
1878 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1879 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1880 !tb[NL80211_TXQ_ATTR_AIFS])
1881 return -EINVAL;
1882
1883 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1884 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1885 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1886 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1887 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1888
1889 if (txq_params->ac >= NL80211_NUM_ACS)
1890 return -EINVAL;
1891
1892 return 0;
1893 }
1894
1895 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1896 {
1897 /*
1898 * You can only set the channel explicitly for WDS interfaces,
1899 * all others have their channel managed via their respective
1900 * "establish a connection" command (connect, join, ...)
1901 *
1902 * For AP/GO and mesh mode, the channel can be set with the
1903 * channel userspace API, but is only stored and passed to the
1904 * low-level driver when the AP starts or the mesh is joined.
1905 * This is for backward compatibility, userspace can also give
1906 * the channel in the start-ap or join-mesh commands instead.
1907 *
1908 * Monitors are special as they are normally slaved to
1909 * whatever else is going on, so they have their own special
1910 * operation to set the monitor channel if possible.
1911 */
1912 return !wdev ||
1913 wdev->iftype == NL80211_IFTYPE_AP ||
1914 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1915 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1916 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1917 }
1918
1919 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1920 struct genl_info *info,
1921 struct cfg80211_chan_def *chandef)
1922 {
1923 u32 control_freq;
1924
1925 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1926 return -EINVAL;
1927
1928 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1929
1930 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1931 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1932 chandef->center_freq1 = control_freq;
1933 chandef->center_freq2 = 0;
1934
1935 /* Primary channel not allowed */
1936 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1937 return -EINVAL;
1938
1939 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1940 enum nl80211_channel_type chantype;
1941
1942 chantype = nla_get_u32(
1943 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1944
1945 switch (chantype) {
1946 case NL80211_CHAN_NO_HT:
1947 case NL80211_CHAN_HT20:
1948 case NL80211_CHAN_HT40PLUS:
1949 case NL80211_CHAN_HT40MINUS:
1950 cfg80211_chandef_create(chandef, chandef->chan,
1951 chantype);
1952 break;
1953 default:
1954 return -EINVAL;
1955 }
1956 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1957 chandef->width =
1958 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1959 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1960 chandef->center_freq1 =
1961 nla_get_u32(
1962 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1963 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1964 chandef->center_freq2 =
1965 nla_get_u32(
1966 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1967 }
1968
1969 if (!cfg80211_chandef_valid(chandef))
1970 return -EINVAL;
1971
1972 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1973 IEEE80211_CHAN_DISABLED))
1974 return -EINVAL;
1975
1976 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1977 chandef->width == NL80211_CHAN_WIDTH_10) &&
1978 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1979 return -EINVAL;
1980
1981 return 0;
1982 }
1983
1984 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1985 struct net_device *dev,
1986 struct genl_info *info)
1987 {
1988 struct cfg80211_chan_def chandef;
1989 int result;
1990 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1991 struct wireless_dev *wdev = NULL;
1992
1993 if (dev)
1994 wdev = dev->ieee80211_ptr;
1995 if (!nl80211_can_set_dev_channel(wdev))
1996 return -EOPNOTSUPP;
1997 if (wdev)
1998 iftype = wdev->iftype;
1999
2000 result = nl80211_parse_chandef(rdev, info, &chandef);
2001 if (result)
2002 return result;
2003
2004 switch (iftype) {
2005 case NL80211_IFTYPE_AP:
2006 case NL80211_IFTYPE_P2P_GO:
2007 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2008 result = -EINVAL;
2009 break;
2010 }
2011 if (wdev->beacon_interval) {
2012 if (!dev || !rdev->ops->set_ap_chanwidth ||
2013 !(rdev->wiphy.features &
2014 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2015 result = -EBUSY;
2016 break;
2017 }
2018
2019 /* Only allow dynamic channel width changes */
2020 if (chandef.chan != wdev->preset_chandef.chan) {
2021 result = -EBUSY;
2022 break;
2023 }
2024 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2025 if (result)
2026 break;
2027 }
2028 wdev->preset_chandef = chandef;
2029 result = 0;
2030 break;
2031 case NL80211_IFTYPE_MESH_POINT:
2032 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2033 break;
2034 case NL80211_IFTYPE_MONITOR:
2035 result = cfg80211_set_monitor_channel(rdev, &chandef);
2036 break;
2037 default:
2038 result = -EINVAL;
2039 }
2040
2041 return result;
2042 }
2043
2044 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2045 {
2046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047 struct net_device *netdev = info->user_ptr[1];
2048
2049 return __nl80211_set_channel(rdev, netdev, info);
2050 }
2051
2052 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2053 {
2054 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2055 struct net_device *dev = info->user_ptr[1];
2056 struct wireless_dev *wdev = dev->ieee80211_ptr;
2057 const u8 *bssid;
2058
2059 if (!info->attrs[NL80211_ATTR_MAC])
2060 return -EINVAL;
2061
2062 if (netif_running(dev))
2063 return -EBUSY;
2064
2065 if (!rdev->ops->set_wds_peer)
2066 return -EOPNOTSUPP;
2067
2068 if (wdev->iftype != NL80211_IFTYPE_WDS)
2069 return -EOPNOTSUPP;
2070
2071 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2072 return rdev_set_wds_peer(rdev, dev, bssid);
2073 }
2074
2075
2076 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2077 {
2078 struct cfg80211_registered_device *rdev;
2079 struct net_device *netdev = NULL;
2080 struct wireless_dev *wdev;
2081 int result = 0, rem_txq_params = 0;
2082 struct nlattr *nl_txq_params;
2083 u32 changed;
2084 u8 retry_short = 0, retry_long = 0;
2085 u32 frag_threshold = 0, rts_threshold = 0;
2086 u8 coverage_class = 0;
2087
2088 ASSERT_RTNL();
2089
2090 /*
2091 * Try to find the wiphy and netdev. Normally this
2092 * function shouldn't need the netdev, but this is
2093 * done for backward compatibility -- previously
2094 * setting the channel was done per wiphy, but now
2095 * it is per netdev. Previous userland like hostapd
2096 * also passed a netdev to set_wiphy, so that it is
2097 * possible to let that go to the right netdev!
2098 */
2099
2100 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2101 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2102
2103 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2104 if (netdev && netdev->ieee80211_ptr)
2105 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2106 else
2107 netdev = NULL;
2108 }
2109
2110 if (!netdev) {
2111 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2112 info->attrs);
2113 if (IS_ERR(rdev))
2114 return PTR_ERR(rdev);
2115 wdev = NULL;
2116 netdev = NULL;
2117 result = 0;
2118 } else
2119 wdev = netdev->ieee80211_ptr;
2120
2121 /*
2122 * end workaround code, by now the rdev is available
2123 * and locked, and wdev may or may not be NULL.
2124 */
2125
2126 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2127 result = cfg80211_dev_rename(
2128 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2129
2130 if (result)
2131 return result;
2132
2133 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2134 struct ieee80211_txq_params txq_params;
2135 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2136
2137 if (!rdev->ops->set_txq_params)
2138 return -EOPNOTSUPP;
2139
2140 if (!netdev)
2141 return -EINVAL;
2142
2143 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2144 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2145 return -EINVAL;
2146
2147 if (!netif_running(netdev))
2148 return -ENETDOWN;
2149
2150 nla_for_each_nested(nl_txq_params,
2151 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2152 rem_txq_params) {
2153 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2154 nla_data(nl_txq_params),
2155 nla_len(nl_txq_params),
2156 txq_params_policy);
2157 if (result)
2158 return result;
2159 result = parse_txq_params(tb, &txq_params);
2160 if (result)
2161 return result;
2162
2163 result = rdev_set_txq_params(rdev, netdev,
2164 &txq_params);
2165 if (result)
2166 return result;
2167 }
2168 }
2169
2170 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2171 result = __nl80211_set_channel(
2172 rdev,
2173 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2174 info);
2175 if (result)
2176 return result;
2177 }
2178
2179 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2180 struct wireless_dev *txp_wdev = wdev;
2181 enum nl80211_tx_power_setting type;
2182 int idx, mbm = 0;
2183
2184 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2185 txp_wdev = NULL;
2186
2187 if (!rdev->ops->set_tx_power)
2188 return -EOPNOTSUPP;
2189
2190 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2191 type = nla_get_u32(info->attrs[idx]);
2192
2193 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2194 (type != NL80211_TX_POWER_AUTOMATIC))
2195 return -EINVAL;
2196
2197 if (type != NL80211_TX_POWER_AUTOMATIC) {
2198 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2199 mbm = nla_get_u32(info->attrs[idx]);
2200 }
2201
2202 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2203 if (result)
2204 return result;
2205 }
2206
2207 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2208 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2209 u32 tx_ant, rx_ant;
2210 if ((!rdev->wiphy.available_antennas_tx &&
2211 !rdev->wiphy.available_antennas_rx) ||
2212 !rdev->ops->set_antenna)
2213 return -EOPNOTSUPP;
2214
2215 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2216 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2217
2218 /* reject antenna configurations which don't match the
2219 * available antenna masks, except for the "all" mask */
2220 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2221 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2222 return -EINVAL;
2223
2224 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2225 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2226
2227 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2228 if (result)
2229 return result;
2230 }
2231
2232 changed = 0;
2233
2234 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2235 retry_short = nla_get_u8(
2236 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2237 if (retry_short == 0)
2238 return -EINVAL;
2239
2240 changed |= WIPHY_PARAM_RETRY_SHORT;
2241 }
2242
2243 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2244 retry_long = nla_get_u8(
2245 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2246 if (retry_long == 0)
2247 return -EINVAL;
2248
2249 changed |= WIPHY_PARAM_RETRY_LONG;
2250 }
2251
2252 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2253 frag_threshold = nla_get_u32(
2254 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2255 if (frag_threshold < 256)
2256 return -EINVAL;
2257
2258 if (frag_threshold != (u32) -1) {
2259 /*
2260 * Fragments (apart from the last one) are required to
2261 * have even length. Make the fragmentation code
2262 * simpler by stripping LSB should someone try to use
2263 * odd threshold value.
2264 */
2265 frag_threshold &= ~0x1;
2266 }
2267 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2268 }
2269
2270 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2271 rts_threshold = nla_get_u32(
2272 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2273 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2274 }
2275
2276 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2277 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2278 return -EINVAL;
2279
2280 coverage_class = nla_get_u8(
2281 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2282 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2283 }
2284
2285 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2286 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2287 return -EOPNOTSUPP;
2288
2289 changed |= WIPHY_PARAM_DYN_ACK;
2290 }
2291
2292 if (changed) {
2293 u8 old_retry_short, old_retry_long;
2294 u32 old_frag_threshold, old_rts_threshold;
2295 u8 old_coverage_class;
2296
2297 if (!rdev->ops->set_wiphy_params)
2298 return -EOPNOTSUPP;
2299
2300 old_retry_short = rdev->wiphy.retry_short;
2301 old_retry_long = rdev->wiphy.retry_long;
2302 old_frag_threshold = rdev->wiphy.frag_threshold;
2303 old_rts_threshold = rdev->wiphy.rts_threshold;
2304 old_coverage_class = rdev->wiphy.coverage_class;
2305
2306 if (changed & WIPHY_PARAM_RETRY_SHORT)
2307 rdev->wiphy.retry_short = retry_short;
2308 if (changed & WIPHY_PARAM_RETRY_LONG)
2309 rdev->wiphy.retry_long = retry_long;
2310 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2311 rdev->wiphy.frag_threshold = frag_threshold;
2312 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2313 rdev->wiphy.rts_threshold = rts_threshold;
2314 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2315 rdev->wiphy.coverage_class = coverage_class;
2316
2317 result = rdev_set_wiphy_params(rdev, changed);
2318 if (result) {
2319 rdev->wiphy.retry_short = old_retry_short;
2320 rdev->wiphy.retry_long = old_retry_long;
2321 rdev->wiphy.frag_threshold = old_frag_threshold;
2322 rdev->wiphy.rts_threshold = old_rts_threshold;
2323 rdev->wiphy.coverage_class = old_coverage_class;
2324 }
2325 }
2326 return 0;
2327 }
2328
2329 static inline u64 wdev_id(struct wireless_dev *wdev)
2330 {
2331 return (u64)wdev->identifier |
2332 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2333 }
2334
2335 static int nl80211_send_chandef(struct sk_buff *msg,
2336 const struct cfg80211_chan_def *chandef)
2337 {
2338 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2339 return -EINVAL;
2340
2341 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2342 chandef->chan->center_freq))
2343 return -ENOBUFS;
2344 switch (chandef->width) {
2345 case NL80211_CHAN_WIDTH_20_NOHT:
2346 case NL80211_CHAN_WIDTH_20:
2347 case NL80211_CHAN_WIDTH_40:
2348 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2349 cfg80211_get_chandef_type(chandef)))
2350 return -ENOBUFS;
2351 break;
2352 default:
2353 break;
2354 }
2355 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2356 return -ENOBUFS;
2357 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2358 return -ENOBUFS;
2359 if (chandef->center_freq2 &&
2360 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2361 return -ENOBUFS;
2362 return 0;
2363 }
2364
2365 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2366 struct cfg80211_registered_device *rdev,
2367 struct wireless_dev *wdev, bool removal)
2368 {
2369 struct net_device *dev = wdev->netdev;
2370 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2371 void *hdr;
2372
2373 if (removal)
2374 cmd = NL80211_CMD_DEL_INTERFACE;
2375
2376 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2377 if (!hdr)
2378 return -1;
2379
2380 if (dev &&
2381 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2382 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2383 goto nla_put_failure;
2384
2385 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2386 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2387 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2388 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2389 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2390 rdev->devlist_generation ^
2391 (cfg80211_rdev_list_generation << 2)))
2392 goto nla_put_failure;
2393
2394 if (rdev->ops->get_channel) {
2395 int ret;
2396 struct cfg80211_chan_def chandef;
2397
2398 ret = rdev_get_channel(rdev, wdev, &chandef);
2399 if (ret == 0) {
2400 if (nl80211_send_chandef(msg, &chandef))
2401 goto nla_put_failure;
2402 }
2403 }
2404
2405 if (wdev->ssid_len) {
2406 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2407 goto nla_put_failure;
2408 }
2409
2410 genlmsg_end(msg, hdr);
2411 return 0;
2412
2413 nla_put_failure:
2414 genlmsg_cancel(msg, hdr);
2415 return -EMSGSIZE;
2416 }
2417
2418 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2419 {
2420 int wp_idx = 0;
2421 int if_idx = 0;
2422 int wp_start = cb->args[0];
2423 int if_start = cb->args[1];
2424 struct cfg80211_registered_device *rdev;
2425 struct wireless_dev *wdev;
2426
2427 rtnl_lock();
2428 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2429 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2430 continue;
2431 if (wp_idx < wp_start) {
2432 wp_idx++;
2433 continue;
2434 }
2435 if_idx = 0;
2436
2437 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2438 if (if_idx < if_start) {
2439 if_idx++;
2440 continue;
2441 }
2442 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2443 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2444 rdev, wdev, false) < 0) {
2445 goto out;
2446 }
2447 if_idx++;
2448 }
2449
2450 wp_idx++;
2451 }
2452 out:
2453 rtnl_unlock();
2454
2455 cb->args[0] = wp_idx;
2456 cb->args[1] = if_idx;
2457
2458 return skb->len;
2459 }
2460
2461 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2462 {
2463 struct sk_buff *msg;
2464 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2465 struct wireless_dev *wdev = info->user_ptr[1];
2466
2467 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2468 if (!msg)
2469 return -ENOMEM;
2470
2471 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2472 rdev, wdev, false) < 0) {
2473 nlmsg_free(msg);
2474 return -ENOBUFS;
2475 }
2476
2477 return genlmsg_reply(msg, info);
2478 }
2479
2480 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2481 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2482 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2483 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2484 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2485 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2486 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2487 };
2488
2489 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2490 {
2491 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2492 int flag;
2493
2494 *mntrflags = 0;
2495
2496 if (!nla)
2497 return -EINVAL;
2498
2499 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2500 nla, mntr_flags_policy))
2501 return -EINVAL;
2502
2503 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2504 if (flags[flag])
2505 *mntrflags |= (1<<flag);
2506
2507 return 0;
2508 }
2509
2510 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2511 struct net_device *netdev, u8 use_4addr,
2512 enum nl80211_iftype iftype)
2513 {
2514 if (!use_4addr) {
2515 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2516 return -EBUSY;
2517 return 0;
2518 }
2519
2520 switch (iftype) {
2521 case NL80211_IFTYPE_AP_VLAN:
2522 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2523 return 0;
2524 break;
2525 case NL80211_IFTYPE_STATION:
2526 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2527 return 0;
2528 break;
2529 default:
2530 break;
2531 }
2532
2533 return -EOPNOTSUPP;
2534 }
2535
2536 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2537 {
2538 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2539 struct vif_params params;
2540 int err;
2541 enum nl80211_iftype otype, ntype;
2542 struct net_device *dev = info->user_ptr[1];
2543 u32 _flags, *flags = NULL;
2544 bool change = false;
2545
2546 memset(&params, 0, sizeof(params));
2547
2548 otype = ntype = dev->ieee80211_ptr->iftype;
2549
2550 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2551 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2552 if (otype != ntype)
2553 change = true;
2554 if (ntype > NL80211_IFTYPE_MAX)
2555 return -EINVAL;
2556 }
2557
2558 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2559 struct wireless_dev *wdev = dev->ieee80211_ptr;
2560
2561 if (ntype != NL80211_IFTYPE_MESH_POINT)
2562 return -EINVAL;
2563 if (netif_running(dev))
2564 return -EBUSY;
2565
2566 wdev_lock(wdev);
2567 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2568 IEEE80211_MAX_MESH_ID_LEN);
2569 wdev->mesh_id_up_len =
2570 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2571 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2572 wdev->mesh_id_up_len);
2573 wdev_unlock(wdev);
2574 }
2575
2576 if (info->attrs[NL80211_ATTR_4ADDR]) {
2577 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2578 change = true;
2579 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2580 if (err)
2581 return err;
2582 } else {
2583 params.use_4addr = -1;
2584 }
2585
2586 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2587 if (ntype != NL80211_IFTYPE_MONITOR)
2588 return -EINVAL;
2589 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2590 &_flags);
2591 if (err)
2592 return err;
2593
2594 flags = &_flags;
2595 change = true;
2596 }
2597
2598 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2599 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2600 return -EOPNOTSUPP;
2601
2602 if (change)
2603 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2604 else
2605 err = 0;
2606
2607 if (!err && params.use_4addr != -1)
2608 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2609
2610 return err;
2611 }
2612
2613 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2614 {
2615 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2616 struct vif_params params;
2617 struct wireless_dev *wdev;
2618 struct sk_buff *msg, *event;
2619 int err;
2620 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2621 u32 flags;
2622
2623 /* to avoid failing a new interface creation due to pending removal */
2624 cfg80211_destroy_ifaces(rdev);
2625
2626 memset(&params, 0, sizeof(params));
2627
2628 if (!info->attrs[NL80211_ATTR_IFNAME])
2629 return -EINVAL;
2630
2631 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2632 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2633 if (type > NL80211_IFTYPE_MAX)
2634 return -EINVAL;
2635 }
2636
2637 if (!rdev->ops->add_virtual_intf ||
2638 !(rdev->wiphy.interface_modes & (1 << type)))
2639 return -EOPNOTSUPP;
2640
2641 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2642 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2643 info->attrs[NL80211_ATTR_MAC]) {
2644 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2645 ETH_ALEN);
2646 if (!is_valid_ether_addr(params.macaddr))
2647 return -EADDRNOTAVAIL;
2648 }
2649
2650 if (info->attrs[NL80211_ATTR_4ADDR]) {
2651 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2652 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2653 if (err)
2654 return err;
2655 }
2656
2657 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2658 if (!msg)
2659 return -ENOMEM;
2660
2661 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2662 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2663 &flags);
2664
2665 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2666 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2667 return -EOPNOTSUPP;
2668
2669 wdev = rdev_add_virtual_intf(rdev,
2670 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2671 type, err ? NULL : &flags, &params);
2672 if (WARN_ON(!wdev)) {
2673 nlmsg_free(msg);
2674 return -EPROTO;
2675 } else if (IS_ERR(wdev)) {
2676 nlmsg_free(msg);
2677 return PTR_ERR(wdev);
2678 }
2679
2680 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2681 wdev->owner_nlportid = info->snd_portid;
2682
2683 switch (type) {
2684 case NL80211_IFTYPE_MESH_POINT:
2685 if (!info->attrs[NL80211_ATTR_MESH_ID])
2686 break;
2687 wdev_lock(wdev);
2688 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2689 IEEE80211_MAX_MESH_ID_LEN);
2690 wdev->mesh_id_up_len =
2691 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2692 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2693 wdev->mesh_id_up_len);
2694 wdev_unlock(wdev);
2695 break;
2696 case NL80211_IFTYPE_P2P_DEVICE:
2697 /*
2698 * P2P Device doesn't have a netdev, so doesn't go
2699 * through the netdev notifier and must be added here
2700 */
2701 mutex_init(&wdev->mtx);
2702 INIT_LIST_HEAD(&wdev->event_list);
2703 spin_lock_init(&wdev->event_lock);
2704 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2705 spin_lock_init(&wdev->mgmt_registrations_lock);
2706
2707 wdev->identifier = ++rdev->wdev_id;
2708 list_add_rcu(&wdev->list, &rdev->wdev_list);
2709 rdev->devlist_generation++;
2710 break;
2711 default:
2712 break;
2713 }
2714
2715 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2716 rdev, wdev, false) < 0) {
2717 nlmsg_free(msg);
2718 return -ENOBUFS;
2719 }
2720
2721 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2722 if (event) {
2723 if (nl80211_send_iface(event, 0, 0, 0,
2724 rdev, wdev, false) < 0) {
2725 nlmsg_free(event);
2726 goto out;
2727 }
2728
2729 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2730 event, 0, NL80211_MCGRP_CONFIG,
2731 GFP_KERNEL);
2732 }
2733
2734 out:
2735 return genlmsg_reply(msg, info);
2736 }
2737
2738 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2739 {
2740 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2741 struct wireless_dev *wdev = info->user_ptr[1];
2742 struct sk_buff *msg;
2743 int status;
2744
2745 if (!rdev->ops->del_virtual_intf)
2746 return -EOPNOTSUPP;
2747
2748 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2749 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2750 nlmsg_free(msg);
2751 msg = NULL;
2752 }
2753
2754 /*
2755 * If we remove a wireless device without a netdev then clear
2756 * user_ptr[1] so that nl80211_post_doit won't dereference it
2757 * to check if it needs to do dev_put(). Otherwise it crashes
2758 * since the wdev has been freed, unlike with a netdev where
2759 * we need the dev_put() for the netdev to really be freed.
2760 */
2761 if (!wdev->netdev)
2762 info->user_ptr[1] = NULL;
2763
2764 status = rdev_del_virtual_intf(rdev, wdev);
2765 if (status >= 0 && msg)
2766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2767 msg, 0, NL80211_MCGRP_CONFIG,
2768 GFP_KERNEL);
2769 else
2770 nlmsg_free(msg);
2771
2772 return status;
2773 }
2774
2775 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2776 {
2777 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2778 struct net_device *dev = info->user_ptr[1];
2779 u16 noack_map;
2780
2781 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2782 return -EINVAL;
2783
2784 if (!rdev->ops->set_noack_map)
2785 return -EOPNOTSUPP;
2786
2787 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2788
2789 return rdev_set_noack_map(rdev, dev, noack_map);
2790 }
2791
2792 struct get_key_cookie {
2793 struct sk_buff *msg;
2794 int error;
2795 int idx;
2796 };
2797
2798 static void get_key_callback(void *c, struct key_params *params)
2799 {
2800 struct nlattr *key;
2801 struct get_key_cookie *cookie = c;
2802
2803 if ((params->key &&
2804 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2805 params->key_len, params->key)) ||
2806 (params->seq &&
2807 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2808 params->seq_len, params->seq)) ||
2809 (params->cipher &&
2810 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2811 params->cipher)))
2812 goto nla_put_failure;
2813
2814 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2815 if (!key)
2816 goto nla_put_failure;
2817
2818 if ((params->key &&
2819 nla_put(cookie->msg, NL80211_KEY_DATA,
2820 params->key_len, params->key)) ||
2821 (params->seq &&
2822 nla_put(cookie->msg, NL80211_KEY_SEQ,
2823 params->seq_len, params->seq)) ||
2824 (params->cipher &&
2825 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2826 params->cipher)))
2827 goto nla_put_failure;
2828
2829 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2830 goto nla_put_failure;
2831
2832 nla_nest_end(cookie->msg, key);
2833
2834 return;
2835 nla_put_failure:
2836 cookie->error = 1;
2837 }
2838
2839 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2840 {
2841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2842 int err;
2843 struct net_device *dev = info->user_ptr[1];
2844 u8 key_idx = 0;
2845 const u8 *mac_addr = NULL;
2846 bool pairwise;
2847 struct get_key_cookie cookie = {
2848 .error = 0,
2849 };
2850 void *hdr;
2851 struct sk_buff *msg;
2852
2853 if (info->attrs[NL80211_ATTR_KEY_IDX])
2854 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2855
2856 if (key_idx > 5)
2857 return -EINVAL;
2858
2859 if (info->attrs[NL80211_ATTR_MAC])
2860 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2861
2862 pairwise = !!mac_addr;
2863 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2864 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2865 if (kt >= NUM_NL80211_KEYTYPES)
2866 return -EINVAL;
2867 if (kt != NL80211_KEYTYPE_GROUP &&
2868 kt != NL80211_KEYTYPE_PAIRWISE)
2869 return -EINVAL;
2870 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2871 }
2872
2873 if (!rdev->ops->get_key)
2874 return -EOPNOTSUPP;
2875
2876 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2877 return -ENOENT;
2878
2879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2880 if (!msg)
2881 return -ENOMEM;
2882
2883 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2884 NL80211_CMD_NEW_KEY);
2885 if (!hdr)
2886 goto nla_put_failure;
2887
2888 cookie.msg = msg;
2889 cookie.idx = key_idx;
2890
2891 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2892 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2893 goto nla_put_failure;
2894 if (mac_addr &&
2895 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2896 goto nla_put_failure;
2897
2898 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2899 get_key_callback);
2900
2901 if (err)
2902 goto free_msg;
2903
2904 if (cookie.error)
2905 goto nla_put_failure;
2906
2907 genlmsg_end(msg, hdr);
2908 return genlmsg_reply(msg, info);
2909
2910 nla_put_failure:
2911 err = -ENOBUFS;
2912 free_msg:
2913 nlmsg_free(msg);
2914 return err;
2915 }
2916
2917 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2918 {
2919 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2920 struct key_parse key;
2921 int err;
2922 struct net_device *dev = info->user_ptr[1];
2923
2924 err = nl80211_parse_key(info, &key);
2925 if (err)
2926 return err;
2927
2928 if (key.idx < 0)
2929 return -EINVAL;
2930
2931 /* only support setting default key */
2932 if (!key.def && !key.defmgmt)
2933 return -EINVAL;
2934
2935 wdev_lock(dev->ieee80211_ptr);
2936
2937 if (key.def) {
2938 if (!rdev->ops->set_default_key) {
2939 err = -EOPNOTSUPP;
2940 goto out;
2941 }
2942
2943 err = nl80211_key_allowed(dev->ieee80211_ptr);
2944 if (err)
2945 goto out;
2946
2947 err = rdev_set_default_key(rdev, dev, key.idx,
2948 key.def_uni, key.def_multi);
2949
2950 if (err)
2951 goto out;
2952
2953 #ifdef CONFIG_CFG80211_WEXT
2954 dev->ieee80211_ptr->wext.default_key = key.idx;
2955 #endif
2956 } else {
2957 if (key.def_uni || !key.def_multi) {
2958 err = -EINVAL;
2959 goto out;
2960 }
2961
2962 if (!rdev->ops->set_default_mgmt_key) {
2963 err = -EOPNOTSUPP;
2964 goto out;
2965 }
2966
2967 err = nl80211_key_allowed(dev->ieee80211_ptr);
2968 if (err)
2969 goto out;
2970
2971 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2972 if (err)
2973 goto out;
2974
2975 #ifdef CONFIG_CFG80211_WEXT
2976 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2977 #endif
2978 }
2979
2980 out:
2981 wdev_unlock(dev->ieee80211_ptr);
2982
2983 return err;
2984 }
2985
2986 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2987 {
2988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2989 int err;
2990 struct net_device *dev = info->user_ptr[1];
2991 struct key_parse key;
2992 const u8 *mac_addr = NULL;
2993
2994 err = nl80211_parse_key(info, &key);
2995 if (err)
2996 return err;
2997
2998 if (!key.p.key)
2999 return -EINVAL;
3000
3001 if (info->attrs[NL80211_ATTR_MAC])
3002 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3003
3004 if (key.type == -1) {
3005 if (mac_addr)
3006 key.type = NL80211_KEYTYPE_PAIRWISE;
3007 else
3008 key.type = NL80211_KEYTYPE_GROUP;
3009 }
3010
3011 /* for now */
3012 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3013 key.type != NL80211_KEYTYPE_GROUP)
3014 return -EINVAL;
3015
3016 if (!rdev->ops->add_key)
3017 return -EOPNOTSUPP;
3018
3019 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3020 key.type == NL80211_KEYTYPE_PAIRWISE,
3021 mac_addr))
3022 return -EINVAL;
3023
3024 wdev_lock(dev->ieee80211_ptr);
3025 err = nl80211_key_allowed(dev->ieee80211_ptr);
3026 if (!err)
3027 err = rdev_add_key(rdev, dev, key.idx,
3028 key.type == NL80211_KEYTYPE_PAIRWISE,
3029 mac_addr, &key.p);
3030 wdev_unlock(dev->ieee80211_ptr);
3031
3032 return err;
3033 }
3034
3035 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3036 {
3037 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3038 int err;
3039 struct net_device *dev = info->user_ptr[1];
3040 u8 *mac_addr = NULL;
3041 struct key_parse key;
3042
3043 err = nl80211_parse_key(info, &key);
3044 if (err)
3045 return err;
3046
3047 if (info->attrs[NL80211_ATTR_MAC])
3048 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3049
3050 if (key.type == -1) {
3051 if (mac_addr)
3052 key.type = NL80211_KEYTYPE_PAIRWISE;
3053 else
3054 key.type = NL80211_KEYTYPE_GROUP;
3055 }
3056
3057 /* for now */
3058 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3059 key.type != NL80211_KEYTYPE_GROUP)
3060 return -EINVAL;
3061
3062 if (!rdev->ops->del_key)
3063 return -EOPNOTSUPP;
3064
3065 wdev_lock(dev->ieee80211_ptr);
3066 err = nl80211_key_allowed(dev->ieee80211_ptr);
3067
3068 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3069 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3070 err = -ENOENT;
3071
3072 if (!err)
3073 err = rdev_del_key(rdev, dev, key.idx,
3074 key.type == NL80211_KEYTYPE_PAIRWISE,
3075 mac_addr);
3076
3077 #ifdef CONFIG_CFG80211_WEXT
3078 if (!err) {
3079 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3080 dev->ieee80211_ptr->wext.default_key = -1;
3081 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3082 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3083 }
3084 #endif
3085 wdev_unlock(dev->ieee80211_ptr);
3086
3087 return err;
3088 }
3089
3090 /* This function returns an error or the number of nested attributes */
3091 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3092 {
3093 struct nlattr *attr;
3094 int n_entries = 0, tmp;
3095
3096 nla_for_each_nested(attr, nl_attr, tmp) {
3097 if (nla_len(attr) != ETH_ALEN)
3098 return -EINVAL;
3099
3100 n_entries++;
3101 }
3102
3103 return n_entries;
3104 }
3105
3106 /*
3107 * This function parses ACL information and allocates memory for ACL data.
3108 * On successful return, the calling function is responsible to free the
3109 * ACL buffer returned by this function.
3110 */
3111 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3112 struct genl_info *info)
3113 {
3114 enum nl80211_acl_policy acl_policy;
3115 struct nlattr *attr;
3116 struct cfg80211_acl_data *acl;
3117 int i = 0, n_entries, tmp;
3118
3119 if (!wiphy->max_acl_mac_addrs)
3120 return ERR_PTR(-EOPNOTSUPP);
3121
3122 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3123 return ERR_PTR(-EINVAL);
3124
3125 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3126 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3127 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3128 return ERR_PTR(-EINVAL);
3129
3130 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3131 return ERR_PTR(-EINVAL);
3132
3133 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3134 if (n_entries < 0)
3135 return ERR_PTR(n_entries);
3136
3137 if (n_entries > wiphy->max_acl_mac_addrs)
3138 return ERR_PTR(-ENOTSUPP);
3139
3140 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3141 GFP_KERNEL);
3142 if (!acl)
3143 return ERR_PTR(-ENOMEM);
3144
3145 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3146 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3147 i++;
3148 }
3149
3150 acl->n_acl_entries = n_entries;
3151 acl->acl_policy = acl_policy;
3152
3153 return acl;
3154 }
3155
3156 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3157 {
3158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3159 struct net_device *dev = info->user_ptr[1];
3160 struct cfg80211_acl_data *acl;
3161 int err;
3162
3163 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3164 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3165 return -EOPNOTSUPP;
3166
3167 if (!dev->ieee80211_ptr->beacon_interval)
3168 return -EINVAL;
3169
3170 acl = parse_acl_data(&rdev->wiphy, info);
3171 if (IS_ERR(acl))
3172 return PTR_ERR(acl);
3173
3174 err = rdev_set_mac_acl(rdev, dev, acl);
3175
3176 kfree(acl);
3177
3178 return err;
3179 }
3180
3181 static int nl80211_parse_beacon(struct nlattr *attrs[],
3182 struct cfg80211_beacon_data *bcn)
3183 {
3184 bool haveinfo = false;
3185
3186 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3187 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3188 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3189 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3190 return -EINVAL;
3191
3192 memset(bcn, 0, sizeof(*bcn));
3193
3194 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3195 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3196 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3197 if (!bcn->head_len)
3198 return -EINVAL;
3199 haveinfo = true;
3200 }
3201
3202 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3203 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3204 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3205 haveinfo = true;
3206 }
3207
3208 if (!haveinfo)
3209 return -EINVAL;
3210
3211 if (attrs[NL80211_ATTR_IE]) {
3212 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3213 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3214 }
3215
3216 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3217 bcn->proberesp_ies =
3218 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3219 bcn->proberesp_ies_len =
3220 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3221 }
3222
3223 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3224 bcn->assocresp_ies =
3225 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3226 bcn->assocresp_ies_len =
3227 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3228 }
3229
3230 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3231 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3232 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3233 }
3234
3235 return 0;
3236 }
3237
3238 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3239 struct cfg80211_ap_settings *params)
3240 {
3241 struct wireless_dev *wdev;
3242 bool ret = false;
3243
3244 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3245 if (wdev->iftype != NL80211_IFTYPE_AP &&
3246 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3247 continue;
3248
3249 if (!wdev->preset_chandef.chan)
3250 continue;
3251
3252 params->chandef = wdev->preset_chandef;
3253 ret = true;
3254 break;
3255 }
3256
3257 return ret;
3258 }
3259
3260 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3261 enum nl80211_auth_type auth_type,
3262 enum nl80211_commands cmd)
3263 {
3264 if (auth_type > NL80211_AUTHTYPE_MAX)
3265 return false;
3266
3267 switch (cmd) {
3268 case NL80211_CMD_AUTHENTICATE:
3269 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3270 auth_type == NL80211_AUTHTYPE_SAE)
3271 return false;
3272 return true;
3273 case NL80211_CMD_CONNECT:
3274 case NL80211_CMD_START_AP:
3275 /* SAE not supported yet */
3276 if (auth_type == NL80211_AUTHTYPE_SAE)
3277 return false;
3278 return true;
3279 default:
3280 return false;
3281 }
3282 }
3283
3284 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3285 {
3286 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3287 struct net_device *dev = info->user_ptr[1];
3288 struct wireless_dev *wdev = dev->ieee80211_ptr;
3289 struct cfg80211_ap_settings params;
3290 int err;
3291
3292 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3293 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3294 return -EOPNOTSUPP;
3295
3296 if (!rdev->ops->start_ap)
3297 return -EOPNOTSUPP;
3298
3299 if (wdev->beacon_interval)
3300 return -EALREADY;
3301
3302 memset(&params, 0, sizeof(params));
3303
3304 /* these are required for START_AP */
3305 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3306 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3307 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3308 return -EINVAL;
3309
3310 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3311 if (err)
3312 return err;
3313
3314 params.beacon_interval =
3315 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3316 params.dtim_period =
3317 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3318
3319 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3320 if (err)
3321 return err;
3322
3323 /*
3324 * In theory, some of these attributes should be required here
3325 * but since they were not used when the command was originally
3326 * added, keep them optional for old user space programs to let
3327 * them continue to work with drivers that do not need the
3328 * additional information -- drivers must check!
3329 */
3330 if (info->attrs[NL80211_ATTR_SSID]) {
3331 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3332 params.ssid_len =
3333 nla_len(info->attrs[NL80211_ATTR_SSID]);
3334 if (params.ssid_len == 0 ||
3335 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3336 return -EINVAL;
3337 }
3338
3339 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3340 params.hidden_ssid = nla_get_u32(
3341 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3342 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3343 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3344 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3345 return -EINVAL;
3346 }
3347
3348 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3349
3350 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3351 params.auth_type = nla_get_u32(
3352 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3353 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3354 NL80211_CMD_START_AP))
3355 return -EINVAL;
3356 } else
3357 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3358
3359 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3360 NL80211_MAX_NR_CIPHER_SUITES);
3361 if (err)
3362 return err;
3363
3364 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3365 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3366 return -EOPNOTSUPP;
3367 params.inactivity_timeout = nla_get_u16(
3368 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3369 }
3370
3371 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3372 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3373 return -EINVAL;
3374 params.p2p_ctwindow =
3375 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3376 if (params.p2p_ctwindow > 127)
3377 return -EINVAL;
3378 if (params.p2p_ctwindow != 0 &&
3379 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3380 return -EINVAL;
3381 }
3382
3383 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3384 u8 tmp;
3385
3386 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3387 return -EINVAL;
3388 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3389 if (tmp > 1)
3390 return -EINVAL;
3391 params.p2p_opp_ps = tmp;
3392 if (params.p2p_opp_ps != 0 &&
3393 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3394 return -EINVAL;
3395 }
3396
3397 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3398 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3399 if (err)
3400 return err;
3401 } else if (wdev->preset_chandef.chan) {
3402 params.chandef = wdev->preset_chandef;
3403 } else if (!nl80211_get_ap_channel(rdev, &params))
3404 return -EINVAL;
3405
3406 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3407 wdev->iftype))
3408 return -EINVAL;
3409
3410 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3411 params.acl = parse_acl_data(&rdev->wiphy, info);
3412 if (IS_ERR(params.acl))
3413 return PTR_ERR(params.acl);
3414 }
3415
3416 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3417 params.smps_mode =
3418 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3419 switch (params.smps_mode) {
3420 case NL80211_SMPS_OFF:
3421 break;
3422 case NL80211_SMPS_STATIC:
3423 if (!(rdev->wiphy.features &
3424 NL80211_FEATURE_STATIC_SMPS))
3425 return -EINVAL;
3426 break;
3427 case NL80211_SMPS_DYNAMIC:
3428 if (!(rdev->wiphy.features &
3429 NL80211_FEATURE_DYNAMIC_SMPS))
3430 return -EINVAL;
3431 break;
3432 default:
3433 return -EINVAL;
3434 }
3435 } else {
3436 params.smps_mode = NL80211_SMPS_OFF;
3437 }
3438
3439 wdev_lock(wdev);
3440 err = rdev_start_ap(rdev, dev, &params);
3441 if (!err) {
3442 wdev->preset_chandef = params.chandef;
3443 wdev->beacon_interval = params.beacon_interval;
3444 wdev->chandef = params.chandef;
3445 wdev->ssid_len = params.ssid_len;
3446 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3447 }
3448 wdev_unlock(wdev);
3449
3450 kfree(params.acl);
3451
3452 return err;
3453 }
3454
3455 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3456 {
3457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3458 struct net_device *dev = info->user_ptr[1];
3459 struct wireless_dev *wdev = dev->ieee80211_ptr;
3460 struct cfg80211_beacon_data params;
3461 int err;
3462
3463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3465 return -EOPNOTSUPP;
3466
3467 if (!rdev->ops->change_beacon)
3468 return -EOPNOTSUPP;
3469
3470 if (!wdev->beacon_interval)
3471 return -EINVAL;
3472
3473 err = nl80211_parse_beacon(info->attrs, &params);
3474 if (err)
3475 return err;
3476
3477 wdev_lock(wdev);
3478 err = rdev_change_beacon(rdev, dev, &params);
3479 wdev_unlock(wdev);
3480
3481 return err;
3482 }
3483
3484 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3485 {
3486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3487 struct net_device *dev = info->user_ptr[1];
3488
3489 return cfg80211_stop_ap(rdev, dev, false);
3490 }
3491
3492 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3493 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3494 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3495 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3496 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3497 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3498 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3499 };
3500
3501 static int parse_station_flags(struct genl_info *info,
3502 enum nl80211_iftype iftype,
3503 struct station_parameters *params)
3504 {
3505 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3506 struct nlattr *nla;
3507 int flag;
3508
3509 /*
3510 * Try parsing the new attribute first so userspace
3511 * can specify both for older kernels.
3512 */
3513 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3514 if (nla) {
3515 struct nl80211_sta_flag_update *sta_flags;
3516
3517 sta_flags = nla_data(nla);
3518 params->sta_flags_mask = sta_flags->mask;
3519 params->sta_flags_set = sta_flags->set;
3520 params->sta_flags_set &= params->sta_flags_mask;
3521 if ((params->sta_flags_mask |
3522 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3523 return -EINVAL;
3524 return 0;
3525 }
3526
3527 /* if present, parse the old attribute */
3528
3529 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3530 if (!nla)
3531 return 0;
3532
3533 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3534 nla, sta_flags_policy))
3535 return -EINVAL;
3536
3537 /*
3538 * Only allow certain flags for interface types so that
3539 * other attributes are silently ignored. Remember that
3540 * this is backward compatibility code with old userspace
3541 * and shouldn't be hit in other cases anyway.
3542 */
3543 switch (iftype) {
3544 case NL80211_IFTYPE_AP:
3545 case NL80211_IFTYPE_AP_VLAN:
3546 case NL80211_IFTYPE_P2P_GO:
3547 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3548 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3549 BIT(NL80211_STA_FLAG_WME) |
3550 BIT(NL80211_STA_FLAG_MFP);
3551 break;
3552 case NL80211_IFTYPE_P2P_CLIENT:
3553 case NL80211_IFTYPE_STATION:
3554 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3555 BIT(NL80211_STA_FLAG_TDLS_PEER);
3556 break;
3557 case NL80211_IFTYPE_MESH_POINT:
3558 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3559 BIT(NL80211_STA_FLAG_MFP) |
3560 BIT(NL80211_STA_FLAG_AUTHORIZED);
3561 default:
3562 return -EINVAL;
3563 }
3564
3565 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3566 if (flags[flag]) {
3567 params->sta_flags_set |= (1<<flag);
3568
3569 /* no longer support new API additions in old API */
3570 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3571 return -EINVAL;
3572 }
3573 }
3574
3575 return 0;
3576 }
3577
3578 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3579 int attr)
3580 {
3581 struct nlattr *rate;
3582 u32 bitrate;
3583 u16 bitrate_compat;
3584 enum nl80211_attrs rate_flg;
3585
3586 rate = nla_nest_start(msg, attr);
3587 if (!rate)
3588 return false;
3589
3590 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3591 bitrate = cfg80211_calculate_bitrate(info);
3592 /* report 16-bit bitrate only if we can */
3593 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3594 if (bitrate > 0 &&
3595 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3596 return false;
3597 if (bitrate_compat > 0 &&
3598 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3599 return false;
3600
3601 switch (info->bw) {
3602 case RATE_INFO_BW_5:
3603 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3604 break;
3605 case RATE_INFO_BW_10:
3606 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3607 break;
3608 default:
3609 WARN_ON(1);
3610 /* fall through */
3611 case RATE_INFO_BW_20:
3612 rate_flg = 0;
3613 break;
3614 case RATE_INFO_BW_40:
3615 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3616 break;
3617 case RATE_INFO_BW_80:
3618 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3619 break;
3620 case RATE_INFO_BW_160:
3621 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3622 break;
3623 }
3624
3625 if (rate_flg && nla_put_flag(msg, rate_flg))
3626 return false;
3627
3628 if (info->flags & RATE_INFO_FLAGS_MCS) {
3629 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3630 return false;
3631 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3632 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3633 return false;
3634 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3635 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3636 return false;
3637 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3638 return false;
3639 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3640 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3641 return false;
3642 }
3643
3644 nla_nest_end(msg, rate);
3645 return true;
3646 }
3647
3648 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3649 int id)
3650 {
3651 void *attr;
3652 int i = 0;
3653
3654 if (!mask)
3655 return true;
3656
3657 attr = nla_nest_start(msg, id);
3658 if (!attr)
3659 return false;
3660
3661 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3662 if (!(mask & BIT(i)))
3663 continue;
3664
3665 if (nla_put_u8(msg, i, signal[i]))
3666 return false;
3667 }
3668
3669 nla_nest_end(msg, attr);
3670
3671 return true;
3672 }
3673
3674 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3675 u32 seq, int flags,
3676 struct cfg80211_registered_device *rdev,
3677 struct net_device *dev,
3678 const u8 *mac_addr, struct station_info *sinfo)
3679 {
3680 void *hdr;
3681 struct nlattr *sinfoattr, *bss_param;
3682
3683 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3684 if (!hdr)
3685 return -1;
3686
3687 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3688 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3689 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3690 goto nla_put_failure;
3691
3692 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3693 if (!sinfoattr)
3694 goto nla_put_failure;
3695
3696 #define PUT_SINFO(attr, memb, type) do { \
3697 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3698 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3699 sinfo->memb)) \
3700 goto nla_put_failure; \
3701 } while (0)
3702
3703 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3704 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3705
3706 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3707 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3708 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3709 (u32)sinfo->rx_bytes))
3710 goto nla_put_failure;
3711
3712 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3713 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3714 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3715 (u32)sinfo->tx_bytes))
3716 goto nla_put_failure;
3717
3718 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3719 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3720 PUT_SINFO(LLID, llid, u16);
3721 PUT_SINFO(PLID, plid, u16);
3722 PUT_SINFO(PLINK_STATE, plink_state, u8);
3723
3724 switch (rdev->wiphy.signal_type) {
3725 case CFG80211_SIGNAL_TYPE_MBM:
3726 PUT_SINFO(SIGNAL, signal, u8);
3727 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3728 break;
3729 default:
3730 break;
3731 }
3732 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3733 if (!nl80211_put_signal(msg, sinfo->chains,
3734 sinfo->chain_signal,
3735 NL80211_STA_INFO_CHAIN_SIGNAL))
3736 goto nla_put_failure;
3737 }
3738 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3739 if (!nl80211_put_signal(msg, sinfo->chains,
3740 sinfo->chain_signal_avg,
3741 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3742 goto nla_put_failure;
3743 }
3744 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3745 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3746 NL80211_STA_INFO_TX_BITRATE))
3747 goto nla_put_failure;
3748 }
3749 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3750 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3751 NL80211_STA_INFO_RX_BITRATE))
3752 goto nla_put_failure;
3753 }
3754
3755 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3756 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3757 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3758 PUT_SINFO(TX_FAILED, tx_failed, u32);
3759 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3760 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3761 PUT_SINFO(LOCAL_PM, local_pm, u32);
3762 PUT_SINFO(PEER_PM, peer_pm, u32);
3763 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3764
3765 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3766 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3767 if (!bss_param)
3768 goto nla_put_failure;
3769
3770 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3771 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3772 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3773 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3774 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3775 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3776 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3777 sinfo->bss_param.dtim_period) ||
3778 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3779 sinfo->bss_param.beacon_interval))
3780 goto nla_put_failure;
3781
3782 nla_nest_end(msg, bss_param);
3783 }
3784 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3785 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3786 sizeof(struct nl80211_sta_flag_update),
3787 &sinfo->sta_flags))
3788 goto nla_put_failure;
3789
3790 PUT_SINFO(T_OFFSET, t_offset, u64);
3791 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3792 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3793 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3794
3795 #undef PUT_SINFO
3796
3797 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3798 struct nlattr *tidsattr;
3799 int tid;
3800
3801 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3802 if (!tidsattr)
3803 goto nla_put_failure;
3804
3805 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3806 struct cfg80211_tid_stats *tidstats;
3807 struct nlattr *tidattr;
3808
3809 tidstats = &sinfo->pertid[tid];
3810
3811 if (!tidstats->filled)
3812 continue;
3813
3814 tidattr = nla_nest_start(msg, tid + 1);
3815 if (!tidattr)
3816 goto nla_put_failure;
3817
3818 #define PUT_TIDVAL(attr, memb, type) do { \
3819 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3820 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3821 tidstats->memb)) \
3822 goto nla_put_failure; \
3823 } while (0)
3824
3825 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3826 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3827 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3828 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3829
3830 #undef PUT_TIDVAL
3831 nla_nest_end(msg, tidattr);
3832 }
3833
3834 nla_nest_end(msg, tidsattr);
3835 }
3836
3837 nla_nest_end(msg, sinfoattr);
3838
3839 if (sinfo->assoc_req_ies_len &&
3840 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3841 sinfo->assoc_req_ies))
3842 goto nla_put_failure;
3843
3844 genlmsg_end(msg, hdr);
3845 return 0;
3846
3847 nla_put_failure:
3848 genlmsg_cancel(msg, hdr);
3849 return -EMSGSIZE;
3850 }
3851
3852 static int nl80211_dump_station(struct sk_buff *skb,
3853 struct netlink_callback *cb)
3854 {
3855 struct station_info sinfo;
3856 struct cfg80211_registered_device *rdev;
3857 struct wireless_dev *wdev;
3858 u8 mac_addr[ETH_ALEN];
3859 int sta_idx = cb->args[2];
3860 int err;
3861
3862 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3863 if (err)
3864 return err;
3865
3866 if (!wdev->netdev) {
3867 err = -EINVAL;
3868 goto out_err;
3869 }
3870
3871 if (!rdev->ops->dump_station) {
3872 err = -EOPNOTSUPP;
3873 goto out_err;
3874 }
3875
3876 while (1) {
3877 memset(&sinfo, 0, sizeof(sinfo));
3878 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3879 mac_addr, &sinfo);
3880 if (err == -ENOENT)
3881 break;
3882 if (err)
3883 goto out_err;
3884
3885 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3886 NETLINK_CB(cb->skb).portid,
3887 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3888 rdev, wdev->netdev, mac_addr,
3889 &sinfo) < 0)
3890 goto out;
3891
3892 sta_idx++;
3893 }
3894
3895
3896 out:
3897 cb->args[2] = sta_idx;
3898 err = skb->len;
3899 out_err:
3900 nl80211_finish_wdev_dump(rdev);
3901
3902 return err;
3903 }
3904
3905 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3906 {
3907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3908 struct net_device *dev = info->user_ptr[1];
3909 struct station_info sinfo;
3910 struct sk_buff *msg;
3911 u8 *mac_addr = NULL;
3912 int err;
3913
3914 memset(&sinfo, 0, sizeof(sinfo));
3915
3916 if (!info->attrs[NL80211_ATTR_MAC])
3917 return -EINVAL;
3918
3919 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3920
3921 if (!rdev->ops->get_station)
3922 return -EOPNOTSUPP;
3923
3924 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3925 if (err)
3926 return err;
3927
3928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3929 if (!msg)
3930 return -ENOMEM;
3931
3932 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3933 info->snd_portid, info->snd_seq, 0,
3934 rdev, dev, mac_addr, &sinfo) < 0) {
3935 nlmsg_free(msg);
3936 return -ENOBUFS;
3937 }
3938
3939 return genlmsg_reply(msg, info);
3940 }
3941
3942 int cfg80211_check_station_change(struct wiphy *wiphy,
3943 struct station_parameters *params,
3944 enum cfg80211_station_type statype)
3945 {
3946 if (params->listen_interval != -1)
3947 return -EINVAL;
3948 if (params->aid &&
3949 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3950 return -EINVAL;
3951
3952 /* When you run into this, adjust the code below for the new flag */
3953 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3954
3955 switch (statype) {
3956 case CFG80211_STA_MESH_PEER_KERNEL:
3957 case CFG80211_STA_MESH_PEER_USER:
3958 /*
3959 * No ignoring the TDLS flag here -- the userspace mesh
3960 * code doesn't have the bug of including TDLS in the
3961 * mask everywhere.
3962 */
3963 if (params->sta_flags_mask &
3964 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3965 BIT(NL80211_STA_FLAG_MFP) |
3966 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3967 return -EINVAL;
3968 break;
3969 case CFG80211_STA_TDLS_PEER_SETUP:
3970 case CFG80211_STA_TDLS_PEER_ACTIVE:
3971 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3972 return -EINVAL;
3973 /* ignore since it can't change */
3974 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3975 break;
3976 default:
3977 /* disallow mesh-specific things */
3978 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3979 return -EINVAL;
3980 if (params->local_pm)
3981 return -EINVAL;
3982 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3983 return -EINVAL;
3984 }
3985
3986 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3987 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3988 /* TDLS can't be set, ... */
3989 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3990 return -EINVAL;
3991 /*
3992 * ... but don't bother the driver with it. This works around
3993 * a hostapd/wpa_supplicant issue -- it always includes the
3994 * TLDS_PEER flag in the mask even for AP mode.
3995 */
3996 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3997 }
3998
3999 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
4000 /* reject other things that can't change */
4001 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4002 return -EINVAL;
4003 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4004 return -EINVAL;
4005 if (params->supported_rates)
4006 return -EINVAL;
4007 if (params->ext_capab || params->ht_capa || params->vht_capa)
4008 return -EINVAL;
4009 }
4010
4011 if (statype != CFG80211_STA_AP_CLIENT) {
4012 if (params->vlan)
4013 return -EINVAL;
4014 }
4015
4016 switch (statype) {
4017 case CFG80211_STA_AP_MLME_CLIENT:
4018 /* Use this only for authorizing/unauthorizing a station */
4019 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4020 return -EOPNOTSUPP;
4021 break;
4022 case CFG80211_STA_AP_CLIENT:
4023 /* accept only the listed bits */
4024 if (params->sta_flags_mask &
4025 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4026 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4027 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4028 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4029 BIT(NL80211_STA_FLAG_WME) |
4030 BIT(NL80211_STA_FLAG_MFP)))
4031 return -EINVAL;
4032
4033 /* but authenticated/associated only if driver handles it */
4034 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4035 params->sta_flags_mask &
4036 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4037 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4038 return -EINVAL;
4039 break;
4040 case CFG80211_STA_IBSS:
4041 case CFG80211_STA_AP_STA:
4042 /* reject any changes other than AUTHORIZED */
4043 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4044 return -EINVAL;
4045 break;
4046 case CFG80211_STA_TDLS_PEER_SETUP:
4047 /* reject any changes other than AUTHORIZED or WME */
4048 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4049 BIT(NL80211_STA_FLAG_WME)))
4050 return -EINVAL;
4051 /* force (at least) rates when authorizing */
4052 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4053 !params->supported_rates)
4054 return -EINVAL;
4055 break;
4056 case CFG80211_STA_TDLS_PEER_ACTIVE:
4057 /* reject any changes */
4058 return -EINVAL;
4059 case CFG80211_STA_MESH_PEER_KERNEL:
4060 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4061 return -EINVAL;
4062 break;
4063 case CFG80211_STA_MESH_PEER_USER:
4064 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4065 return -EINVAL;
4066 break;
4067 }
4068
4069 return 0;
4070 }
4071 EXPORT_SYMBOL(cfg80211_check_station_change);
4072
4073 /*
4074 * Get vlan interface making sure it is running and on the right wiphy.
4075 */
4076 static struct net_device *get_vlan(struct genl_info *info,
4077 struct cfg80211_registered_device *rdev)
4078 {
4079 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4080 struct net_device *v;
4081 int ret;
4082
4083 if (!vlanattr)
4084 return NULL;
4085
4086 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4087 if (!v)
4088 return ERR_PTR(-ENODEV);
4089
4090 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4091 ret = -EINVAL;
4092 goto error;
4093 }
4094
4095 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4096 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4097 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4098 ret = -EINVAL;
4099 goto error;
4100 }
4101
4102 if (!netif_running(v)) {
4103 ret = -ENETDOWN;
4104 goto error;
4105 }
4106
4107 return v;
4108 error:
4109 dev_put(v);
4110 return ERR_PTR(ret);
4111 }
4112
4113 static const struct nla_policy
4114 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4115 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4116 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4117 };
4118
4119 static int nl80211_parse_sta_wme(struct genl_info *info,
4120 struct station_parameters *params)
4121 {
4122 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4123 struct nlattr *nla;
4124 int err;
4125
4126 /* parse WME attributes if present */
4127 if (!info->attrs[NL80211_ATTR_STA_WME])
4128 return 0;
4129
4130 nla = info->attrs[NL80211_ATTR_STA_WME];
4131 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4132 nl80211_sta_wme_policy);
4133 if (err)
4134 return err;
4135
4136 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4137 params->uapsd_queues = nla_get_u8(
4138 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4139 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4140 return -EINVAL;
4141
4142 if (tb[NL80211_STA_WME_MAX_SP])
4143 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4144
4145 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4146 return -EINVAL;
4147
4148 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4149
4150 return 0;
4151 }
4152
4153 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4154 struct station_parameters *params)
4155 {
4156 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4157 params->supported_channels =
4158 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4159 params->supported_channels_len =
4160 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4161 /*
4162 * Need to include at least one (first channel, number of
4163 * channels) tuple for each subband, and must have proper
4164 * tuples for the rest of the data as well.
4165 */
4166 if (params->supported_channels_len < 2)
4167 return -EINVAL;
4168 if (params->supported_channels_len % 2)
4169 return -EINVAL;
4170 }
4171
4172 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4173 params->supported_oper_classes =
4174 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4175 params->supported_oper_classes_len =
4176 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4177 /*
4178 * The value of the Length field of the Supported Operating
4179 * Classes element is between 2 and 253.
4180 */
4181 if (params->supported_oper_classes_len < 2 ||
4182 params->supported_oper_classes_len > 253)
4183 return -EINVAL;
4184 }
4185 return 0;
4186 }
4187
4188 static int nl80211_set_station_tdls(struct genl_info *info,
4189 struct station_parameters *params)
4190 {
4191 int err;
4192 /* Dummy STA entry gets updated once the peer capabilities are known */
4193 if (info->attrs[NL80211_ATTR_PEER_AID])
4194 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4195 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4196 params->ht_capa =
4197 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4198 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4199 params->vht_capa =
4200 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4201
4202 err = nl80211_parse_sta_channel_info(info, params);
4203 if (err)
4204 return err;
4205
4206 return nl80211_parse_sta_wme(info, params);
4207 }
4208
4209 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4210 {
4211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4212 struct net_device *dev = info->user_ptr[1];
4213 struct station_parameters params;
4214 u8 *mac_addr;
4215 int err;
4216
4217 memset(&params, 0, sizeof(params));
4218
4219 params.listen_interval = -1;
4220
4221 if (!rdev->ops->change_station)
4222 return -EOPNOTSUPP;
4223
4224 if (info->attrs[NL80211_ATTR_STA_AID])
4225 return -EINVAL;
4226
4227 if (!info->attrs[NL80211_ATTR_MAC])
4228 return -EINVAL;
4229
4230 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4231
4232 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4233 params.supported_rates =
4234 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4235 params.supported_rates_len =
4236 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4237 }
4238
4239 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4240 params.capability =
4241 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4242 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4243 }
4244
4245 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4246 params.ext_capab =
4247 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4248 params.ext_capab_len =
4249 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4250 }
4251
4252 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4253 return -EINVAL;
4254
4255 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4256 return -EINVAL;
4257
4258 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4259 params.plink_action =
4260 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4261 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4262 return -EINVAL;
4263 }
4264
4265 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4266 params.plink_state =
4267 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4268 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4269 return -EINVAL;
4270 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4271 }
4272
4273 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4274 enum nl80211_mesh_power_mode pm = nla_get_u32(
4275 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4276
4277 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4278 pm > NL80211_MESH_POWER_MAX)
4279 return -EINVAL;
4280
4281 params.local_pm = pm;
4282 }
4283
4284 /* Include parameters for TDLS peer (will check later) */
4285 err = nl80211_set_station_tdls(info, &params);
4286 if (err)
4287 return err;
4288
4289 params.vlan = get_vlan(info, rdev);
4290 if (IS_ERR(params.vlan))
4291 return PTR_ERR(params.vlan);
4292
4293 switch (dev->ieee80211_ptr->iftype) {
4294 case NL80211_IFTYPE_AP:
4295 case NL80211_IFTYPE_AP_VLAN:
4296 case NL80211_IFTYPE_P2P_GO:
4297 case NL80211_IFTYPE_P2P_CLIENT:
4298 case NL80211_IFTYPE_STATION:
4299 case NL80211_IFTYPE_ADHOC:
4300 case NL80211_IFTYPE_MESH_POINT:
4301 break;
4302 default:
4303 err = -EOPNOTSUPP;
4304 goto out_put_vlan;
4305 }
4306
4307 /* driver will call cfg80211_check_station_change() */
4308 err = rdev_change_station(rdev, dev, mac_addr, &params);
4309
4310 out_put_vlan:
4311 if (params.vlan)
4312 dev_put(params.vlan);
4313
4314 return err;
4315 }
4316
4317 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4318 {
4319 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4320 int err;
4321 struct net_device *dev = info->user_ptr[1];
4322 struct station_parameters params;
4323 u8 *mac_addr = NULL;
4324
4325 memset(&params, 0, sizeof(params));
4326
4327 if (!rdev->ops->add_station)
4328 return -EOPNOTSUPP;
4329
4330 if (!info->attrs[NL80211_ATTR_MAC])
4331 return -EINVAL;
4332
4333 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4334 return -EINVAL;
4335
4336 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4337 return -EINVAL;
4338
4339 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4340 !info->attrs[NL80211_ATTR_PEER_AID])
4341 return -EINVAL;
4342
4343 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4344 params.supported_rates =
4345 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4346 params.supported_rates_len =
4347 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4348 params.listen_interval =
4349 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4350
4351 if (info->attrs[NL80211_ATTR_PEER_AID])
4352 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4353 else
4354 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4355 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4356 return -EINVAL;
4357
4358 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4359 params.capability =
4360 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4361 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4362 }
4363
4364 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4365 params.ext_capab =
4366 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4367 params.ext_capab_len =
4368 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4369 }
4370
4371 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4372 params.ht_capa =
4373 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4374
4375 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4376 params.vht_capa =
4377 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4378
4379 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4380 params.opmode_notif_used = true;
4381 params.opmode_notif =
4382 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4383 }
4384
4385 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4386 params.plink_action =
4387 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4388 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4389 return -EINVAL;
4390 }
4391
4392 err = nl80211_parse_sta_channel_info(info, &params);
4393 if (err)
4394 return err;
4395
4396 err = nl80211_parse_sta_wme(info, &params);
4397 if (err)
4398 return err;
4399
4400 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4401 return -EINVAL;
4402
4403 /* When you run into this, adjust the code below for the new flag */
4404 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4405
4406 switch (dev->ieee80211_ptr->iftype) {
4407 case NL80211_IFTYPE_AP:
4408 case NL80211_IFTYPE_AP_VLAN:
4409 case NL80211_IFTYPE_P2P_GO:
4410 /* ignore WME attributes if iface/sta is not capable */
4411 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4412 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4413 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4414
4415 /* TDLS peers cannot be added */
4416 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4417 info->attrs[NL80211_ATTR_PEER_AID])
4418 return -EINVAL;
4419 /* but don't bother the driver with it */
4420 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4421
4422 /* allow authenticated/associated only if driver handles it */
4423 if (!(rdev->wiphy.features &
4424 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4425 params.sta_flags_mask &
4426 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4427 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4428 return -EINVAL;
4429
4430 /* must be last in here for error handling */
4431 params.vlan = get_vlan(info, rdev);
4432 if (IS_ERR(params.vlan))
4433 return PTR_ERR(params.vlan);
4434 break;
4435 case NL80211_IFTYPE_MESH_POINT:
4436 /* ignore uAPSD data */
4437 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4438
4439 /* associated is disallowed */
4440 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4441 return -EINVAL;
4442 /* TDLS peers cannot be added */
4443 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4444 info->attrs[NL80211_ATTR_PEER_AID])
4445 return -EINVAL;
4446 break;
4447 case NL80211_IFTYPE_STATION:
4448 case NL80211_IFTYPE_P2P_CLIENT:
4449 /* ignore uAPSD data */
4450 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4451
4452 /* these are disallowed */
4453 if (params.sta_flags_mask &
4454 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4455 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4456 return -EINVAL;
4457 /* Only TDLS peers can be added */
4458 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4459 return -EINVAL;
4460 /* Can only add if TDLS ... */
4461 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4462 return -EOPNOTSUPP;
4463 /* ... with external setup is supported */
4464 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4465 return -EOPNOTSUPP;
4466 /*
4467 * Older wpa_supplicant versions always mark the TDLS peer
4468 * as authorized, but it shouldn't yet be.
4469 */
4470 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4471 break;
4472 default:
4473 return -EOPNOTSUPP;
4474 }
4475
4476 /* be aware of params.vlan when changing code here */
4477
4478 err = rdev_add_station(rdev, dev, mac_addr, &params);
4479
4480 if (params.vlan)
4481 dev_put(params.vlan);
4482 return err;
4483 }
4484
4485 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4486 {
4487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4488 struct net_device *dev = info->user_ptr[1];
4489 struct station_del_parameters params;
4490
4491 memset(&params, 0, sizeof(params));
4492
4493 if (info->attrs[NL80211_ATTR_MAC])
4494 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4495
4496 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4497 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4498 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4499 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4500 return -EINVAL;
4501
4502 if (!rdev->ops->del_station)
4503 return -EOPNOTSUPP;
4504
4505 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4506 params.subtype =
4507 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4508 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4509 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4510 return -EINVAL;
4511 } else {
4512 /* Default to Deauthentication frame */
4513 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4514 }
4515
4516 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4517 params.reason_code =
4518 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4519 if (params.reason_code == 0)
4520 return -EINVAL; /* 0 is reserved */
4521 } else {
4522 /* Default to reason code 2 */
4523 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4524 }
4525
4526 return rdev_del_station(rdev, dev, &params);
4527 }
4528
4529 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4530 int flags, struct net_device *dev,
4531 u8 *dst, u8 *next_hop,
4532 struct mpath_info *pinfo)
4533 {
4534 void *hdr;
4535 struct nlattr *pinfoattr;
4536
4537 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4538 if (!hdr)
4539 return -1;
4540
4541 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4542 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4543 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4544 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4545 goto nla_put_failure;
4546
4547 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4548 if (!pinfoattr)
4549 goto nla_put_failure;
4550 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4551 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4552 pinfo->frame_qlen))
4553 goto nla_put_failure;
4554 if (((pinfo->filled & MPATH_INFO_SN) &&
4555 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4556 ((pinfo->filled & MPATH_INFO_METRIC) &&
4557 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4558 pinfo->metric)) ||
4559 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4560 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4561 pinfo->exptime)) ||
4562 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4563 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4564 pinfo->flags)) ||
4565 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4566 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4567 pinfo->discovery_timeout)) ||
4568 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4569 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4570 pinfo->discovery_retries)))
4571 goto nla_put_failure;
4572
4573 nla_nest_end(msg, pinfoattr);
4574
4575 genlmsg_end(msg, hdr);
4576 return 0;
4577
4578 nla_put_failure:
4579 genlmsg_cancel(msg, hdr);
4580 return -EMSGSIZE;
4581 }
4582
4583 static int nl80211_dump_mpath(struct sk_buff *skb,
4584 struct netlink_callback *cb)
4585 {
4586 struct mpath_info pinfo;
4587 struct cfg80211_registered_device *rdev;
4588 struct wireless_dev *wdev;
4589 u8 dst[ETH_ALEN];
4590 u8 next_hop[ETH_ALEN];
4591 int path_idx = cb->args[2];
4592 int err;
4593
4594 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4595 if (err)
4596 return err;
4597
4598 if (!rdev->ops->dump_mpath) {
4599 err = -EOPNOTSUPP;
4600 goto out_err;
4601 }
4602
4603 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4604 err = -EOPNOTSUPP;
4605 goto out_err;
4606 }
4607
4608 while (1) {
4609 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4610 next_hop, &pinfo);
4611 if (err == -ENOENT)
4612 break;
4613 if (err)
4614 goto out_err;
4615
4616 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4617 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4618 wdev->netdev, dst, next_hop,
4619 &pinfo) < 0)
4620 goto out;
4621
4622 path_idx++;
4623 }
4624
4625
4626 out:
4627 cb->args[2] = path_idx;
4628 err = skb->len;
4629 out_err:
4630 nl80211_finish_wdev_dump(rdev);
4631 return err;
4632 }
4633
4634 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4635 {
4636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4637 int err;
4638 struct net_device *dev = info->user_ptr[1];
4639 struct mpath_info pinfo;
4640 struct sk_buff *msg;
4641 u8 *dst = NULL;
4642 u8 next_hop[ETH_ALEN];
4643
4644 memset(&pinfo, 0, sizeof(pinfo));
4645
4646 if (!info->attrs[NL80211_ATTR_MAC])
4647 return -EINVAL;
4648
4649 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4650
4651 if (!rdev->ops->get_mpath)
4652 return -EOPNOTSUPP;
4653
4654 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4655 return -EOPNOTSUPP;
4656
4657 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4658 if (err)
4659 return err;
4660
4661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4662 if (!msg)
4663 return -ENOMEM;
4664
4665 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4666 dev, dst, next_hop, &pinfo) < 0) {
4667 nlmsg_free(msg);
4668 return -ENOBUFS;
4669 }
4670
4671 return genlmsg_reply(msg, info);
4672 }
4673
4674 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4675 {
4676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4677 struct net_device *dev = info->user_ptr[1];
4678 u8 *dst = NULL;
4679 u8 *next_hop = NULL;
4680
4681 if (!info->attrs[NL80211_ATTR_MAC])
4682 return -EINVAL;
4683
4684 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4685 return -EINVAL;
4686
4687 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4688 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4689
4690 if (!rdev->ops->change_mpath)
4691 return -EOPNOTSUPP;
4692
4693 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4694 return -EOPNOTSUPP;
4695
4696 return rdev_change_mpath(rdev, dev, dst, next_hop);
4697 }
4698
4699 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4700 {
4701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4702 struct net_device *dev = info->user_ptr[1];
4703 u8 *dst = NULL;
4704 u8 *next_hop = NULL;
4705
4706 if (!info->attrs[NL80211_ATTR_MAC])
4707 return -EINVAL;
4708
4709 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4710 return -EINVAL;
4711
4712 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4713 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4714
4715 if (!rdev->ops->add_mpath)
4716 return -EOPNOTSUPP;
4717
4718 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4719 return -EOPNOTSUPP;
4720
4721 return rdev_add_mpath(rdev, dev, dst, next_hop);
4722 }
4723
4724 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4725 {
4726 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4727 struct net_device *dev = info->user_ptr[1];
4728 u8 *dst = NULL;
4729
4730 if (info->attrs[NL80211_ATTR_MAC])
4731 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4732
4733 if (!rdev->ops->del_mpath)
4734 return -EOPNOTSUPP;
4735
4736 return rdev_del_mpath(rdev, dev, dst);
4737 }
4738
4739 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4740 {
4741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4742 int err;
4743 struct net_device *dev = info->user_ptr[1];
4744 struct mpath_info pinfo;
4745 struct sk_buff *msg;
4746 u8 *dst = NULL;
4747 u8 mpp[ETH_ALEN];
4748
4749 memset(&pinfo, 0, sizeof(pinfo));
4750
4751 if (!info->attrs[NL80211_ATTR_MAC])
4752 return -EINVAL;
4753
4754 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4755
4756 if (!rdev->ops->get_mpp)
4757 return -EOPNOTSUPP;
4758
4759 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4760 return -EOPNOTSUPP;
4761
4762 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4763 if (err)
4764 return err;
4765
4766 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4767 if (!msg)
4768 return -ENOMEM;
4769
4770 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4771 dev, dst, mpp, &pinfo) < 0) {
4772 nlmsg_free(msg);
4773 return -ENOBUFS;
4774 }
4775
4776 return genlmsg_reply(msg, info);
4777 }
4778
4779 static int nl80211_dump_mpp(struct sk_buff *skb,
4780 struct netlink_callback *cb)
4781 {
4782 struct mpath_info pinfo;
4783 struct cfg80211_registered_device *rdev;
4784 struct wireless_dev *wdev;
4785 u8 dst[ETH_ALEN];
4786 u8 mpp[ETH_ALEN];
4787 int path_idx = cb->args[2];
4788 int err;
4789
4790 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4791 if (err)
4792 return err;
4793
4794 if (!rdev->ops->dump_mpp) {
4795 err = -EOPNOTSUPP;
4796 goto out_err;
4797 }
4798
4799 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4800 err = -EOPNOTSUPP;
4801 goto out_err;
4802 }
4803
4804 while (1) {
4805 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4806 mpp, &pinfo);
4807 if (err == -ENOENT)
4808 break;
4809 if (err)
4810 goto out_err;
4811
4812 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4813 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4814 wdev->netdev, dst, mpp,
4815 &pinfo) < 0)
4816 goto out;
4817
4818 path_idx++;
4819 }
4820
4821 out:
4822 cb->args[2] = path_idx;
4823 err = skb->len;
4824 out_err:
4825 nl80211_finish_wdev_dump(rdev);
4826 return err;
4827 }
4828
4829 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4830 {
4831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4832 struct net_device *dev = info->user_ptr[1];
4833 struct wireless_dev *wdev = dev->ieee80211_ptr;
4834 struct bss_parameters params;
4835 int err;
4836
4837 memset(&params, 0, sizeof(params));
4838 /* default to not changing parameters */
4839 params.use_cts_prot = -1;
4840 params.use_short_preamble = -1;
4841 params.use_short_slot_time = -1;
4842 params.ap_isolate = -1;
4843 params.ht_opmode = -1;
4844 params.p2p_ctwindow = -1;
4845 params.p2p_opp_ps = -1;
4846
4847 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4848 params.use_cts_prot =
4849 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4850 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4851 params.use_short_preamble =
4852 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4853 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4854 params.use_short_slot_time =
4855 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4856 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4857 params.basic_rates =
4858 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4859 params.basic_rates_len =
4860 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4861 }
4862 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4863 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4864 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4865 params.ht_opmode =
4866 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4867
4868 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4869 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4870 return -EINVAL;
4871 params.p2p_ctwindow =
4872 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4873 if (params.p2p_ctwindow < 0)
4874 return -EINVAL;
4875 if (params.p2p_ctwindow != 0 &&
4876 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4877 return -EINVAL;
4878 }
4879
4880 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4881 u8 tmp;
4882
4883 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4884 return -EINVAL;
4885 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4886 if (tmp > 1)
4887 return -EINVAL;
4888 params.p2p_opp_ps = tmp;
4889 if (params.p2p_opp_ps &&
4890 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4891 return -EINVAL;
4892 }
4893
4894 if (!rdev->ops->change_bss)
4895 return -EOPNOTSUPP;
4896
4897 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4898 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4899 return -EOPNOTSUPP;
4900
4901 wdev_lock(wdev);
4902 err = rdev_change_bss(rdev, dev, &params);
4903 wdev_unlock(wdev);
4904
4905 return err;
4906 }
4907
4908 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4909 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4910 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4911 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4912 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4913 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4914 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4915 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4916 };
4917
4918 static int parse_reg_rule(struct nlattr *tb[],
4919 struct ieee80211_reg_rule *reg_rule)
4920 {
4921 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4922 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4923
4924 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4925 return -EINVAL;
4926 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4927 return -EINVAL;
4928 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4929 return -EINVAL;
4930 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4931 return -EINVAL;
4932 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4933 return -EINVAL;
4934
4935 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4936
4937 freq_range->start_freq_khz =
4938 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4939 freq_range->end_freq_khz =
4940 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4941 freq_range->max_bandwidth_khz =
4942 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4943
4944 power_rule->max_eirp =
4945 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4946
4947 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4948 power_rule->max_antenna_gain =
4949 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4950
4951 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4952 reg_rule->dfs_cac_ms =
4953 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4954
4955 return 0;
4956 }
4957
4958 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4959 {
4960 char *data = NULL;
4961 enum nl80211_user_reg_hint_type user_reg_hint_type;
4962
4963 /*
4964 * You should only get this when cfg80211 hasn't yet initialized
4965 * completely when built-in to the kernel right between the time
4966 * window between nl80211_init() and regulatory_init(), if that is
4967 * even possible.
4968 */
4969 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4970 return -EINPROGRESS;
4971
4972 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4973 user_reg_hint_type =
4974 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4975 else
4976 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4977
4978 switch (user_reg_hint_type) {
4979 case NL80211_USER_REG_HINT_USER:
4980 case NL80211_USER_REG_HINT_CELL_BASE:
4981 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4982 return -EINVAL;
4983
4984 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4985 return regulatory_hint_user(data, user_reg_hint_type);
4986 case NL80211_USER_REG_HINT_INDOOR:
4987 return regulatory_hint_indoor_user();
4988 default:
4989 return -EINVAL;
4990 }
4991 }
4992
4993 static int nl80211_get_mesh_config(struct sk_buff *skb,
4994 struct genl_info *info)
4995 {
4996 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4997 struct net_device *dev = info->user_ptr[1];
4998 struct wireless_dev *wdev = dev->ieee80211_ptr;
4999 struct mesh_config cur_params;
5000 int err = 0;
5001 void *hdr;
5002 struct nlattr *pinfoattr;
5003 struct sk_buff *msg;
5004
5005 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5006 return -EOPNOTSUPP;
5007
5008 if (!rdev->ops->get_mesh_config)
5009 return -EOPNOTSUPP;
5010
5011 wdev_lock(wdev);
5012 /* If not connected, get default parameters */
5013 if (!wdev->mesh_id_len)
5014 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5015 else
5016 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5017 wdev_unlock(wdev);
5018
5019 if (err)
5020 return err;
5021
5022 /* Draw up a netlink message to send back */
5023 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5024 if (!msg)
5025 return -ENOMEM;
5026 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5027 NL80211_CMD_GET_MESH_CONFIG);
5028 if (!hdr)
5029 goto out;
5030 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5031 if (!pinfoattr)
5032 goto nla_put_failure;
5033 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5034 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5035 cur_params.dot11MeshRetryTimeout) ||
5036 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5037 cur_params.dot11MeshConfirmTimeout) ||
5038 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5039 cur_params.dot11MeshHoldingTimeout) ||
5040 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5041 cur_params.dot11MeshMaxPeerLinks) ||
5042 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5043 cur_params.dot11MeshMaxRetries) ||
5044 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5045 cur_params.dot11MeshTTL) ||
5046 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5047 cur_params.element_ttl) ||
5048 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5049 cur_params.auto_open_plinks) ||
5050 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5051 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5052 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5053 cur_params.dot11MeshHWMPmaxPREQretries) ||
5054 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5055 cur_params.path_refresh_time) ||
5056 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5057 cur_params.min_discovery_timeout) ||
5058 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5059 cur_params.dot11MeshHWMPactivePathTimeout) ||
5060 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5061 cur_params.dot11MeshHWMPpreqMinInterval) ||
5062 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5063 cur_params.dot11MeshHWMPperrMinInterval) ||
5064 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5065 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5066 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5067 cur_params.dot11MeshHWMPRootMode) ||
5068 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5069 cur_params.dot11MeshHWMPRannInterval) ||
5070 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5071 cur_params.dot11MeshGateAnnouncementProtocol) ||
5072 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5073 cur_params.dot11MeshForwarding) ||
5074 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5075 cur_params.rssi_threshold) ||
5076 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5077 cur_params.ht_opmode) ||
5078 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5079 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5080 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5081 cur_params.dot11MeshHWMProotInterval) ||
5082 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5083 cur_params.dot11MeshHWMPconfirmationInterval) ||
5084 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5085 cur_params.power_mode) ||
5086 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5087 cur_params.dot11MeshAwakeWindowDuration) ||
5088 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5089 cur_params.plink_timeout))
5090 goto nla_put_failure;
5091 nla_nest_end(msg, pinfoattr);
5092 genlmsg_end(msg, hdr);
5093 return genlmsg_reply(msg, info);
5094
5095 nla_put_failure:
5096 genlmsg_cancel(msg, hdr);
5097 out:
5098 nlmsg_free(msg);
5099 return -ENOBUFS;
5100 }
5101
5102 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5103 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5104 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5105 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5106 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5107 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5108 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5109 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5110 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5111 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5112 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5113 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5114 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5115 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5116 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5117 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5118 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5119 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5120 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5121 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5122 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5123 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5124 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5125 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5126 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5127 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5128 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5129 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5130 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5131 };
5132
5133 static const struct nla_policy
5134 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5135 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5136 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5137 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5138 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5139 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5140 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5141 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5142 .len = IEEE80211_MAX_DATA_LEN },
5143 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5144 };
5145
5146 static int nl80211_parse_mesh_config(struct genl_info *info,
5147 struct mesh_config *cfg,
5148 u32 *mask_out)
5149 {
5150 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5151 u32 mask = 0;
5152
5153 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5154 do { \
5155 if (tb[attr]) { \
5156 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5157 return -EINVAL; \
5158 cfg->param = fn(tb[attr]); \
5159 mask |= (1 << (attr - 1)); \
5160 } \
5161 } while (0)
5162
5163
5164 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5165 return -EINVAL;
5166 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5167 info->attrs[NL80211_ATTR_MESH_CONFIG],
5168 nl80211_meshconf_params_policy))
5169 return -EINVAL;
5170
5171 /* This makes sure that there aren't more than 32 mesh config
5172 * parameters (otherwise our bitfield scheme would not work.) */
5173 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5174
5175 /* Fill in the params struct */
5176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5177 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5178 nla_get_u16);
5179 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5180 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5181 nla_get_u16);
5182 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5183 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5184 nla_get_u16);
5185 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5186 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5187 nla_get_u16);
5188 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5189 mask, NL80211_MESHCONF_MAX_RETRIES,
5190 nla_get_u8);
5191 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5192 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5193 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5194 mask, NL80211_MESHCONF_ELEMENT_TTL,
5195 nla_get_u8);
5196 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5197 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5198 nla_get_u8);
5199 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5200 1, 255, mask,
5201 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5202 nla_get_u32);
5203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5204 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5205 nla_get_u8);
5206 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5207 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5208 nla_get_u32);
5209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5210 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5211 nla_get_u16);
5212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5213 1, 65535, mask,
5214 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5215 nla_get_u32);
5216 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5217 1, 65535, mask,
5218 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5219 nla_get_u16);
5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5221 1, 65535, mask,
5222 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5223 nla_get_u16);
5224 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5225 dot11MeshHWMPnetDiameterTraversalTime,
5226 1, 65535, mask,
5227 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5228 nla_get_u16);
5229 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5230 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5231 nla_get_u8);
5232 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5233 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5234 nla_get_u16);
5235 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5236 dot11MeshGateAnnouncementProtocol, 0, 1,
5237 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5238 nla_get_u8);
5239 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5240 mask, NL80211_MESHCONF_FORWARDING,
5241 nla_get_u8);
5242 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5243 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5244 nla_get_s32);
5245 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5246 mask, NL80211_MESHCONF_HT_OPMODE,
5247 nla_get_u16);
5248 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5249 1, 65535, mask,
5250 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5251 nla_get_u32);
5252 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5253 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5254 nla_get_u16);
5255 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5256 dot11MeshHWMPconfirmationInterval,
5257 1, 65535, mask,
5258 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5259 nla_get_u16);
5260 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5261 NL80211_MESH_POWER_ACTIVE,
5262 NL80211_MESH_POWER_MAX,
5263 mask, NL80211_MESHCONF_POWER_MODE,
5264 nla_get_u32);
5265 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5266 0, 65535, mask,
5267 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5268 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5269 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5270 nla_get_u32);
5271 if (mask_out)
5272 *mask_out = mask;
5273
5274 return 0;
5275
5276 #undef FILL_IN_MESH_PARAM_IF_SET
5277 }
5278
5279 static int nl80211_parse_mesh_setup(struct genl_info *info,
5280 struct mesh_setup *setup)
5281 {
5282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5283 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5284
5285 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5286 return -EINVAL;
5287 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5288 info->attrs[NL80211_ATTR_MESH_SETUP],
5289 nl80211_mesh_setup_params_policy))
5290 return -EINVAL;
5291
5292 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5293 setup->sync_method =
5294 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5295 IEEE80211_SYNC_METHOD_VENDOR :
5296 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5297
5298 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5299 setup->path_sel_proto =
5300 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5301 IEEE80211_PATH_PROTOCOL_VENDOR :
5302 IEEE80211_PATH_PROTOCOL_HWMP;
5303
5304 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5305 setup->path_metric =
5306 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5307 IEEE80211_PATH_METRIC_VENDOR :
5308 IEEE80211_PATH_METRIC_AIRTIME;
5309
5310
5311 if (tb[NL80211_MESH_SETUP_IE]) {
5312 struct nlattr *ieattr =
5313 tb[NL80211_MESH_SETUP_IE];
5314 if (!is_valid_ie_attr(ieattr))
5315 return -EINVAL;
5316 setup->ie = nla_data(ieattr);
5317 setup->ie_len = nla_len(ieattr);
5318 }
5319 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5320 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5321 return -EINVAL;
5322 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5323 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5324 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5325 if (setup->is_secure)
5326 setup->user_mpm = true;
5327
5328 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5329 if (!setup->user_mpm)
5330 return -EINVAL;
5331 setup->auth_id =
5332 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5333 }
5334
5335 return 0;
5336 }
5337
5338 static int nl80211_update_mesh_config(struct sk_buff *skb,
5339 struct genl_info *info)
5340 {
5341 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5342 struct net_device *dev = info->user_ptr[1];
5343 struct wireless_dev *wdev = dev->ieee80211_ptr;
5344 struct mesh_config cfg;
5345 u32 mask;
5346 int err;
5347
5348 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5349 return -EOPNOTSUPP;
5350
5351 if (!rdev->ops->update_mesh_config)
5352 return -EOPNOTSUPP;
5353
5354 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5355 if (err)
5356 return err;
5357
5358 wdev_lock(wdev);
5359 if (!wdev->mesh_id_len)
5360 err = -ENOLINK;
5361
5362 if (!err)
5363 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5364
5365 wdev_unlock(wdev);
5366
5367 return err;
5368 }
5369
5370 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5371 struct sk_buff *msg)
5372 {
5373 struct nlattr *nl_reg_rules;
5374 unsigned int i;
5375
5376 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5377 (regdom->dfs_region &&
5378 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5379 goto nla_put_failure;
5380
5381 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5382 if (!nl_reg_rules)
5383 goto nla_put_failure;
5384
5385 for (i = 0; i < regdom->n_reg_rules; i++) {
5386 struct nlattr *nl_reg_rule;
5387 const struct ieee80211_reg_rule *reg_rule;
5388 const struct ieee80211_freq_range *freq_range;
5389 const struct ieee80211_power_rule *power_rule;
5390 unsigned int max_bandwidth_khz;
5391
5392 reg_rule = &regdom->reg_rules[i];
5393 freq_range = &reg_rule->freq_range;
5394 power_rule = &reg_rule->power_rule;
5395
5396 nl_reg_rule = nla_nest_start(msg, i);
5397 if (!nl_reg_rule)
5398 goto nla_put_failure;
5399
5400 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5401 if (!max_bandwidth_khz)
5402 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5403 reg_rule);
5404
5405 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5406 reg_rule->flags) ||
5407 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5408 freq_range->start_freq_khz) ||
5409 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5410 freq_range->end_freq_khz) ||
5411 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5412 max_bandwidth_khz) ||
5413 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5414 power_rule->max_antenna_gain) ||
5415 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5416 power_rule->max_eirp) ||
5417 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5418 reg_rule->dfs_cac_ms))
5419 goto nla_put_failure;
5420
5421 nla_nest_end(msg, nl_reg_rule);
5422 }
5423
5424 nla_nest_end(msg, nl_reg_rules);
5425 return 0;
5426
5427 nla_put_failure:
5428 return -EMSGSIZE;
5429 }
5430
5431 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5432 {
5433 const struct ieee80211_regdomain *regdom = NULL;
5434 struct cfg80211_registered_device *rdev;
5435 struct wiphy *wiphy = NULL;
5436 struct sk_buff *msg;
5437 void *hdr;
5438
5439 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5440 if (!msg)
5441 return -ENOBUFS;
5442
5443 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5444 NL80211_CMD_GET_REG);
5445 if (!hdr)
5446 goto put_failure;
5447
5448 if (info->attrs[NL80211_ATTR_WIPHY]) {
5449 bool self_managed;
5450
5451 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5452 if (IS_ERR(rdev)) {
5453 nlmsg_free(msg);
5454 return PTR_ERR(rdev);
5455 }
5456
5457 wiphy = &rdev->wiphy;
5458 self_managed = wiphy->regulatory_flags &
5459 REGULATORY_WIPHY_SELF_MANAGED;
5460 regdom = get_wiphy_regdom(wiphy);
5461
5462 /* a self-managed-reg device must have a private regdom */
5463 if (WARN_ON(!regdom && self_managed)) {
5464 nlmsg_free(msg);
5465 return -EINVAL;
5466 }
5467
5468 if (regdom &&
5469 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5470 goto nla_put_failure;
5471 }
5472
5473 if (!wiphy && reg_last_request_cell_base() &&
5474 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5475 NL80211_USER_REG_HINT_CELL_BASE))
5476 goto nla_put_failure;
5477
5478 rcu_read_lock();
5479
5480 if (!regdom)
5481 regdom = rcu_dereference(cfg80211_regdomain);
5482
5483 if (nl80211_put_regdom(regdom, msg))
5484 goto nla_put_failure_rcu;
5485
5486 rcu_read_unlock();
5487
5488 genlmsg_end(msg, hdr);
5489 return genlmsg_reply(msg, info);
5490
5491 nla_put_failure_rcu:
5492 rcu_read_unlock();
5493 nla_put_failure:
5494 genlmsg_cancel(msg, hdr);
5495 put_failure:
5496 nlmsg_free(msg);
5497 return -EMSGSIZE;
5498 }
5499
5500 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5501 u32 seq, int flags, struct wiphy *wiphy,
5502 const struct ieee80211_regdomain *regdom)
5503 {
5504 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5505 NL80211_CMD_GET_REG);
5506
5507 if (!hdr)
5508 return -1;
5509
5510 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5511
5512 if (nl80211_put_regdom(regdom, msg))
5513 goto nla_put_failure;
5514
5515 if (!wiphy && reg_last_request_cell_base() &&
5516 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5517 NL80211_USER_REG_HINT_CELL_BASE))
5518 goto nla_put_failure;
5519
5520 if (wiphy &&
5521 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5522 goto nla_put_failure;
5523
5524 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5525 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5526 goto nla_put_failure;
5527
5528 genlmsg_end(msg, hdr);
5529 return 0;
5530
5531 nla_put_failure:
5532 genlmsg_cancel(msg, hdr);
5533 return -EMSGSIZE;
5534 }
5535
5536 static int nl80211_get_reg_dump(struct sk_buff *skb,
5537 struct netlink_callback *cb)
5538 {
5539 const struct ieee80211_regdomain *regdom = NULL;
5540 struct cfg80211_registered_device *rdev;
5541 int err, reg_idx, start = cb->args[2];
5542
5543 rtnl_lock();
5544
5545 if (cfg80211_regdomain && start == 0) {
5546 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5547 NLM_F_MULTI, NULL,
5548 rtnl_dereference(cfg80211_regdomain));
5549 if (err < 0)
5550 goto out_err;
5551 }
5552
5553 /* the global regdom is idx 0 */
5554 reg_idx = 1;
5555 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5556 regdom = get_wiphy_regdom(&rdev->wiphy);
5557 if (!regdom)
5558 continue;
5559
5560 if (++reg_idx <= start)
5561 continue;
5562
5563 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5564 NLM_F_MULTI, &rdev->wiphy, regdom);
5565 if (err < 0) {
5566 reg_idx--;
5567 break;
5568 }
5569 }
5570
5571 cb->args[2] = reg_idx;
5572 err = skb->len;
5573 out_err:
5574 rtnl_unlock();
5575 return err;
5576 }
5577
5578 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5579 {
5580 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5581 struct nlattr *nl_reg_rule;
5582 char *alpha2;
5583 int rem_reg_rules, r;
5584 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5585 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5586 struct ieee80211_regdomain *rd;
5587
5588 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5589 return -EINVAL;
5590
5591 if (!info->attrs[NL80211_ATTR_REG_RULES])
5592 return -EINVAL;
5593
5594 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5595
5596 if (info->attrs[NL80211_ATTR_DFS_REGION])
5597 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5598
5599 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5600 rem_reg_rules) {
5601 num_rules++;
5602 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5603 return -EINVAL;
5604 }
5605
5606 if (!reg_is_valid_request(alpha2))
5607 return -EINVAL;
5608
5609 size_of_regd = sizeof(struct ieee80211_regdomain) +
5610 num_rules * sizeof(struct ieee80211_reg_rule);
5611
5612 rd = kzalloc(size_of_regd, GFP_KERNEL);
5613 if (!rd)
5614 return -ENOMEM;
5615
5616 rd->n_reg_rules = num_rules;
5617 rd->alpha2[0] = alpha2[0];
5618 rd->alpha2[1] = alpha2[1];
5619
5620 /*
5621 * Disable DFS master mode if the DFS region was
5622 * not supported or known on this kernel.
5623 */
5624 if (reg_supported_dfs_region(dfs_region))
5625 rd->dfs_region = dfs_region;
5626
5627 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5628 rem_reg_rules) {
5629 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5630 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5631 reg_rule_policy);
5632 if (r)
5633 goto bad_reg;
5634 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5635 if (r)
5636 goto bad_reg;
5637
5638 rule_idx++;
5639
5640 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5641 r = -EINVAL;
5642 goto bad_reg;
5643 }
5644 }
5645
5646 r = set_regdom(rd);
5647 /* set_regdom took ownership */
5648 rd = NULL;
5649
5650 bad_reg:
5651 kfree(rd);
5652 return r;
5653 }
5654
5655 static int validate_scan_freqs(struct nlattr *freqs)
5656 {
5657 struct nlattr *attr1, *attr2;
5658 int n_channels = 0, tmp1, tmp2;
5659
5660 nla_for_each_nested(attr1, freqs, tmp1) {
5661 n_channels++;
5662 /*
5663 * Some hardware has a limited channel list for
5664 * scanning, and it is pretty much nonsensical
5665 * to scan for a channel twice, so disallow that
5666 * and don't require drivers to check that the
5667 * channel list they get isn't longer than what
5668 * they can scan, as long as they can scan all
5669 * the channels they registered at once.
5670 */
5671 nla_for_each_nested(attr2, freqs, tmp2)
5672 if (attr1 != attr2 &&
5673 nla_get_u32(attr1) == nla_get_u32(attr2))
5674 return 0;
5675 }
5676
5677 return n_channels;
5678 }
5679
5680 static int nl80211_parse_random_mac(struct nlattr **attrs,
5681 u8 *mac_addr, u8 *mac_addr_mask)
5682 {
5683 int i;
5684
5685 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5686 memset(mac_addr, 0, ETH_ALEN);
5687 memset(mac_addr_mask, 0, ETH_ALEN);
5688 mac_addr[0] = 0x2;
5689 mac_addr_mask[0] = 0x3;
5690
5691 return 0;
5692 }
5693
5694 /* need both or none */
5695 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5696 return -EINVAL;
5697
5698 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5699 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5700
5701 /* don't allow or configure an mcast address */
5702 if (!is_multicast_ether_addr(mac_addr_mask) ||
5703 is_multicast_ether_addr(mac_addr))
5704 return -EINVAL;
5705
5706 /*
5707 * allow users to pass a MAC address that has bits set outside
5708 * of the mask, but don't bother drivers with having to deal
5709 * with such bits
5710 */
5711 for (i = 0; i < ETH_ALEN; i++)
5712 mac_addr[i] &= mac_addr_mask[i];
5713
5714 return 0;
5715 }
5716
5717 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5718 {
5719 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5720 struct wireless_dev *wdev = info->user_ptr[1];
5721 struct cfg80211_scan_request *request;
5722 struct nlattr *attr;
5723 struct wiphy *wiphy;
5724 int err, tmp, n_ssids = 0, n_channels, i;
5725 size_t ie_len;
5726
5727 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5728 return -EINVAL;
5729
5730 wiphy = &rdev->wiphy;
5731
5732 if (!rdev->ops->scan)
5733 return -EOPNOTSUPP;
5734
5735 if (rdev->scan_req || rdev->scan_msg) {
5736 err = -EBUSY;
5737 goto unlock;
5738 }
5739
5740 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5741 n_channels = validate_scan_freqs(
5742 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5743 if (!n_channels) {
5744 err = -EINVAL;
5745 goto unlock;
5746 }
5747 } else {
5748 n_channels = ieee80211_get_num_supported_channels(wiphy);
5749 }
5750
5751 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5752 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5753 n_ssids++;
5754
5755 if (n_ssids > wiphy->max_scan_ssids) {
5756 err = -EINVAL;
5757 goto unlock;
5758 }
5759
5760 if (info->attrs[NL80211_ATTR_IE])
5761 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5762 else
5763 ie_len = 0;
5764
5765 if (ie_len > wiphy->max_scan_ie_len) {
5766 err = -EINVAL;
5767 goto unlock;
5768 }
5769
5770 request = kzalloc(sizeof(*request)
5771 + sizeof(*request->ssids) * n_ssids
5772 + sizeof(*request->channels) * n_channels
5773 + ie_len, GFP_KERNEL);
5774 if (!request) {
5775 err = -ENOMEM;
5776 goto unlock;
5777 }
5778
5779 if (n_ssids)
5780 request->ssids = (void *)&request->channels[n_channels];
5781 request->n_ssids = n_ssids;
5782 if (ie_len) {
5783 if (n_ssids)
5784 request->ie = (void *)(request->ssids + n_ssids);
5785 else
5786 request->ie = (void *)(request->channels + n_channels);
5787 }
5788
5789 i = 0;
5790 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5791 /* user specified, bail out if channel not found */
5792 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5793 struct ieee80211_channel *chan;
5794
5795 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5796
5797 if (!chan) {
5798 err = -EINVAL;
5799 goto out_free;
5800 }
5801
5802 /* ignore disabled channels */
5803 if (chan->flags & IEEE80211_CHAN_DISABLED)
5804 continue;
5805
5806 request->channels[i] = chan;
5807 i++;
5808 }
5809 } else {
5810 enum ieee80211_band band;
5811
5812 /* all channels */
5813 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5814 int j;
5815 if (!wiphy->bands[band])
5816 continue;
5817 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5818 struct ieee80211_channel *chan;
5819
5820 chan = &wiphy->bands[band]->channels[j];
5821
5822 if (chan->flags & IEEE80211_CHAN_DISABLED)
5823 continue;
5824
5825 request->channels[i] = chan;
5826 i++;
5827 }
5828 }
5829 }
5830
5831 if (!i) {
5832 err = -EINVAL;
5833 goto out_free;
5834 }
5835
5836 request->n_channels = i;
5837
5838 i = 0;
5839 if (n_ssids) {
5840 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5841 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5842 err = -EINVAL;
5843 goto out_free;
5844 }
5845 request->ssids[i].ssid_len = nla_len(attr);
5846 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5847 i++;
5848 }
5849 }
5850
5851 if (info->attrs[NL80211_ATTR_IE]) {
5852 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5853 memcpy((void *)request->ie,
5854 nla_data(info->attrs[NL80211_ATTR_IE]),
5855 request->ie_len);
5856 }
5857
5858 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5859 if (wiphy->bands[i])
5860 request->rates[i] =
5861 (1 << wiphy->bands[i]->n_bitrates) - 1;
5862
5863 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5864 nla_for_each_nested(attr,
5865 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5866 tmp) {
5867 enum ieee80211_band band = nla_type(attr);
5868
5869 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5870 err = -EINVAL;
5871 goto out_free;
5872 }
5873
5874 if (!wiphy->bands[band])
5875 continue;
5876
5877 err = ieee80211_get_ratemask(wiphy->bands[band],
5878 nla_data(attr),
5879 nla_len(attr),
5880 &request->rates[band]);
5881 if (err)
5882 goto out_free;
5883 }
5884 }
5885
5886 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5887 request->flags = nla_get_u32(
5888 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5889 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5890 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5891 err = -EOPNOTSUPP;
5892 goto out_free;
5893 }
5894
5895 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5896 if (!(wiphy->features &
5897 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5898 err = -EOPNOTSUPP;
5899 goto out_free;
5900 }
5901
5902 if (wdev->current_bss) {
5903 err = -EOPNOTSUPP;
5904 goto out_free;
5905 }
5906
5907 err = nl80211_parse_random_mac(info->attrs,
5908 request->mac_addr,
5909 request->mac_addr_mask);
5910 if (err)
5911 goto out_free;
5912 }
5913 }
5914
5915 request->no_cck =
5916 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5917
5918 request->wdev = wdev;
5919 request->wiphy = &rdev->wiphy;
5920 request->scan_start = jiffies;
5921
5922 rdev->scan_req = request;
5923 err = rdev_scan(rdev, request);
5924
5925 if (!err) {
5926 nl80211_send_scan_start(rdev, wdev);
5927 if (wdev->netdev)
5928 dev_hold(wdev->netdev);
5929 } else {
5930 out_free:
5931 rdev->scan_req = NULL;
5932 kfree(request);
5933 }
5934
5935 unlock:
5936 return err;
5937 }
5938
5939 static struct cfg80211_sched_scan_request *
5940 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5941 struct nlattr **attrs)
5942 {
5943 struct cfg80211_sched_scan_request *request;
5944 struct nlattr *attr;
5945 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5946 u32 interval;
5947 enum ieee80211_band band;
5948 size_t ie_len;
5949 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5950 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5951
5952 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5953 return ERR_PTR(-EINVAL);
5954
5955 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5956 return ERR_PTR(-EINVAL);
5957
5958 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5959 if (interval == 0)
5960 return ERR_PTR(-EINVAL);
5961
5962 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5963 n_channels = validate_scan_freqs(
5964 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5965 if (!n_channels)
5966 return ERR_PTR(-EINVAL);
5967 } else {
5968 n_channels = ieee80211_get_num_supported_channels(wiphy);
5969 }
5970
5971 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5972 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5973 tmp)
5974 n_ssids++;
5975
5976 if (n_ssids > wiphy->max_sched_scan_ssids)
5977 return ERR_PTR(-EINVAL);
5978
5979 /*
5980 * First, count the number of 'real' matchsets. Due to an issue with
5981 * the old implementation, matchsets containing only the RSSI attribute
5982 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5983 * RSSI for all matchsets, rather than their own matchset for reporting
5984 * all APs with a strong RSSI. This is needed to be compatible with
5985 * older userspace that treated a matchset with only the RSSI as the
5986 * global RSSI for all other matchsets - if there are other matchsets.
5987 */
5988 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5989 nla_for_each_nested(attr,
5990 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5991 tmp) {
5992 struct nlattr *rssi;
5993
5994 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5995 nla_data(attr), nla_len(attr),
5996 nl80211_match_policy);
5997 if (err)
5998 return ERR_PTR(err);
5999 /* add other standalone attributes here */
6000 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6001 n_match_sets++;
6002 continue;
6003 }
6004 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6005 if (rssi)
6006 default_match_rssi = nla_get_s32(rssi);
6007 }
6008 }
6009
6010 /* However, if there's no other matchset, add the RSSI one */
6011 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6012 n_match_sets = 1;
6013
6014 if (n_match_sets > wiphy->max_match_sets)
6015 return ERR_PTR(-EINVAL);
6016
6017 if (attrs[NL80211_ATTR_IE])
6018 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6019 else
6020 ie_len = 0;
6021
6022 if (ie_len > wiphy->max_sched_scan_ie_len)
6023 return ERR_PTR(-EINVAL);
6024
6025 request = kzalloc(sizeof(*request)
6026 + sizeof(*request->ssids) * n_ssids
6027 + sizeof(*request->match_sets) * n_match_sets
6028 + sizeof(*request->channels) * n_channels
6029 + ie_len, GFP_KERNEL);
6030 if (!request)
6031 return ERR_PTR(-ENOMEM);
6032
6033 if (n_ssids)
6034 request->ssids = (void *)&request->channels[n_channels];
6035 request->n_ssids = n_ssids;
6036 if (ie_len) {
6037 if (n_ssids)
6038 request->ie = (void *)(request->ssids + n_ssids);
6039 else
6040 request->ie = (void *)(request->channels + n_channels);
6041 }
6042
6043 if (n_match_sets) {
6044 if (request->ie)
6045 request->match_sets = (void *)(request->ie + ie_len);
6046 else if (n_ssids)
6047 request->match_sets =
6048 (void *)(request->ssids + n_ssids);
6049 else
6050 request->match_sets =
6051 (void *)(request->channels + n_channels);
6052 }
6053 request->n_match_sets = n_match_sets;
6054
6055 i = 0;
6056 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6057 /* user specified, bail out if channel not found */
6058 nla_for_each_nested(attr,
6059 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6060 tmp) {
6061 struct ieee80211_channel *chan;
6062
6063 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6064
6065 if (!chan) {
6066 err = -EINVAL;
6067 goto out_free;
6068 }
6069
6070 /* ignore disabled channels */
6071 if (chan->flags & IEEE80211_CHAN_DISABLED)
6072 continue;
6073
6074 request->channels[i] = chan;
6075 i++;
6076 }
6077 } else {
6078 /* all channels */
6079 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6080 int j;
6081 if (!wiphy->bands[band])
6082 continue;
6083 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6084 struct ieee80211_channel *chan;
6085
6086 chan = &wiphy->bands[band]->channels[j];
6087
6088 if (chan->flags & IEEE80211_CHAN_DISABLED)
6089 continue;
6090
6091 request->channels[i] = chan;
6092 i++;
6093 }
6094 }
6095 }
6096
6097 if (!i) {
6098 err = -EINVAL;
6099 goto out_free;
6100 }
6101
6102 request->n_channels = i;
6103
6104 i = 0;
6105 if (n_ssids) {
6106 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6107 tmp) {
6108 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6109 err = -EINVAL;
6110 goto out_free;
6111 }
6112 request->ssids[i].ssid_len = nla_len(attr);
6113 memcpy(request->ssids[i].ssid, nla_data(attr),
6114 nla_len(attr));
6115 i++;
6116 }
6117 }
6118
6119 i = 0;
6120 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6121 nla_for_each_nested(attr,
6122 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6123 tmp) {
6124 struct nlattr *ssid, *rssi;
6125
6126 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6127 nla_data(attr), nla_len(attr),
6128 nl80211_match_policy);
6129 if (err)
6130 goto out_free;
6131 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6132 if (ssid) {
6133 if (WARN_ON(i >= n_match_sets)) {
6134 /* this indicates a programming error,
6135 * the loop above should have verified
6136 * things properly
6137 */
6138 err = -EINVAL;
6139 goto out_free;
6140 }
6141
6142 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6143 err = -EINVAL;
6144 goto out_free;
6145 }
6146 memcpy(request->match_sets[i].ssid.ssid,
6147 nla_data(ssid), nla_len(ssid));
6148 request->match_sets[i].ssid.ssid_len =
6149 nla_len(ssid);
6150 /* special attribute - old implemenation w/a */
6151 request->match_sets[i].rssi_thold =
6152 default_match_rssi;
6153 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6154 if (rssi)
6155 request->match_sets[i].rssi_thold =
6156 nla_get_s32(rssi);
6157 }
6158 i++;
6159 }
6160
6161 /* there was no other matchset, so the RSSI one is alone */
6162 if (i == 0 && n_match_sets)
6163 request->match_sets[0].rssi_thold = default_match_rssi;
6164
6165 request->min_rssi_thold = INT_MAX;
6166 for (i = 0; i < n_match_sets; i++)
6167 request->min_rssi_thold =
6168 min(request->match_sets[i].rssi_thold,
6169 request->min_rssi_thold);
6170 } else {
6171 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6172 }
6173
6174 if (ie_len) {
6175 request->ie_len = ie_len;
6176 memcpy((void *)request->ie,
6177 nla_data(attrs[NL80211_ATTR_IE]),
6178 request->ie_len);
6179 }
6180
6181 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6182 request->flags = nla_get_u32(
6183 attrs[NL80211_ATTR_SCAN_FLAGS]);
6184 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6185 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6186 err = -EOPNOTSUPP;
6187 goto out_free;
6188 }
6189
6190 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6191 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6192
6193 if (!wdev) /* must be net-detect */
6194 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6195
6196 if (!(wiphy->features & flg)) {
6197 err = -EOPNOTSUPP;
6198 goto out_free;
6199 }
6200
6201 if (wdev && wdev->current_bss) {
6202 err = -EOPNOTSUPP;
6203 goto out_free;
6204 }
6205
6206 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6207 request->mac_addr_mask);
6208 if (err)
6209 goto out_free;
6210 }
6211 }
6212
6213 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6214 request->delay =
6215 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6216
6217 request->interval = interval;
6218 request->scan_start = jiffies;
6219
6220 return request;
6221
6222 out_free:
6223 kfree(request);
6224 return ERR_PTR(err);
6225 }
6226
6227 static int nl80211_start_sched_scan(struct sk_buff *skb,
6228 struct genl_info *info)
6229 {
6230 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6231 struct net_device *dev = info->user_ptr[1];
6232 struct wireless_dev *wdev = dev->ieee80211_ptr;
6233 struct cfg80211_sched_scan_request *sched_scan_req;
6234 int err;
6235
6236 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6237 !rdev->ops->sched_scan_start)
6238 return -EOPNOTSUPP;
6239
6240 if (rdev->sched_scan_req)
6241 return -EINPROGRESS;
6242
6243 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6244 info->attrs);
6245
6246 err = PTR_ERR_OR_ZERO(sched_scan_req);
6247 if (err)
6248 goto out_err;
6249
6250 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6251 if (err)
6252 goto out_free;
6253
6254 sched_scan_req->dev = dev;
6255 sched_scan_req->wiphy = &rdev->wiphy;
6256
6257 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6258 sched_scan_req->owner_nlportid = info->snd_portid;
6259
6260 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6261
6262 nl80211_send_sched_scan(rdev, dev,
6263 NL80211_CMD_START_SCHED_SCAN);
6264 return 0;
6265
6266 out_free:
6267 kfree(sched_scan_req);
6268 out_err:
6269 return err;
6270 }
6271
6272 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6273 struct genl_info *info)
6274 {
6275 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6276
6277 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6278 !rdev->ops->sched_scan_stop)
6279 return -EOPNOTSUPP;
6280
6281 return __cfg80211_stop_sched_scan(rdev, false);
6282 }
6283
6284 static int nl80211_start_radar_detection(struct sk_buff *skb,
6285 struct genl_info *info)
6286 {
6287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6288 struct net_device *dev = info->user_ptr[1];
6289 struct wireless_dev *wdev = dev->ieee80211_ptr;
6290 struct cfg80211_chan_def chandef;
6291 enum nl80211_dfs_regions dfs_region;
6292 unsigned int cac_time_ms;
6293 int err;
6294
6295 dfs_region = reg_get_dfs_region(wdev->wiphy);
6296 if (dfs_region == NL80211_DFS_UNSET)
6297 return -EINVAL;
6298
6299 err = nl80211_parse_chandef(rdev, info, &chandef);
6300 if (err)
6301 return err;
6302
6303 if (netif_carrier_ok(dev))
6304 return -EBUSY;
6305
6306 if (wdev->cac_started)
6307 return -EBUSY;
6308
6309 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6310 wdev->iftype);
6311 if (err < 0)
6312 return err;
6313
6314 if (err == 0)
6315 return -EINVAL;
6316
6317 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6318 return -EINVAL;
6319
6320 if (!rdev->ops->start_radar_detection)
6321 return -EOPNOTSUPP;
6322
6323 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6324 if (WARN_ON(!cac_time_ms))
6325 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6326
6327 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6328 cac_time_ms);
6329 if (!err) {
6330 wdev->chandef = chandef;
6331 wdev->cac_started = true;
6332 wdev->cac_start_time = jiffies;
6333 wdev->cac_time_ms = cac_time_ms;
6334 }
6335 return err;
6336 }
6337
6338 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6339 {
6340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6341 struct net_device *dev = info->user_ptr[1];
6342 struct wireless_dev *wdev = dev->ieee80211_ptr;
6343 struct cfg80211_csa_settings params;
6344 /* csa_attrs is defined static to avoid waste of stack size - this
6345 * function is called under RTNL lock, so this should not be a problem.
6346 */
6347 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6348 int err;
6349 bool need_new_beacon = false;
6350 int len, i;
6351 u32 cs_count;
6352
6353 if (!rdev->ops->channel_switch ||
6354 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6355 return -EOPNOTSUPP;
6356
6357 switch (dev->ieee80211_ptr->iftype) {
6358 case NL80211_IFTYPE_AP:
6359 case NL80211_IFTYPE_P2P_GO:
6360 need_new_beacon = true;
6361
6362 /* useless if AP is not running */
6363 if (!wdev->beacon_interval)
6364 return -ENOTCONN;
6365 break;
6366 case NL80211_IFTYPE_ADHOC:
6367 if (!wdev->ssid_len)
6368 return -ENOTCONN;
6369 break;
6370 case NL80211_IFTYPE_MESH_POINT:
6371 if (!wdev->mesh_id_len)
6372 return -ENOTCONN;
6373 break;
6374 default:
6375 return -EOPNOTSUPP;
6376 }
6377
6378 memset(&params, 0, sizeof(params));
6379
6380 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6381 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6382 return -EINVAL;
6383
6384 /* only important for AP, IBSS and mesh create IEs internally */
6385 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6386 return -EINVAL;
6387
6388 /* Even though the attribute is u32, the specification says
6389 * u8, so let's make sure we don't overflow.
6390 */
6391 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6392 if (cs_count > 255)
6393 return -EINVAL;
6394
6395 params.count = cs_count;
6396
6397 if (!need_new_beacon)
6398 goto skip_beacons;
6399
6400 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6401 if (err)
6402 return err;
6403
6404 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6405 info->attrs[NL80211_ATTR_CSA_IES],
6406 nl80211_policy);
6407 if (err)
6408 return err;
6409
6410 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6411 if (err)
6412 return err;
6413
6414 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6415 return -EINVAL;
6416
6417 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6418 if (!len || (len % sizeof(u16)))
6419 return -EINVAL;
6420
6421 params.n_counter_offsets_beacon = len / sizeof(u16);
6422 if (rdev->wiphy.max_num_csa_counters &&
6423 (params.n_counter_offsets_beacon >
6424 rdev->wiphy.max_num_csa_counters))
6425 return -EINVAL;
6426
6427 params.counter_offsets_beacon =
6428 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6429
6430 /* sanity checks - counters should fit and be the same */
6431 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6432 u16 offset = params.counter_offsets_beacon[i];
6433
6434 if (offset >= params.beacon_csa.tail_len)
6435 return -EINVAL;
6436
6437 if (params.beacon_csa.tail[offset] != params.count)
6438 return -EINVAL;
6439 }
6440
6441 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6442 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6443 if (!len || (len % sizeof(u16)))
6444 return -EINVAL;
6445
6446 params.n_counter_offsets_presp = len / sizeof(u16);
6447 if (rdev->wiphy.max_num_csa_counters &&
6448 (params.n_counter_offsets_beacon >
6449 rdev->wiphy.max_num_csa_counters))
6450 return -EINVAL;
6451
6452 params.counter_offsets_presp =
6453 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6454
6455 /* sanity checks - counters should fit and be the same */
6456 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6457 u16 offset = params.counter_offsets_presp[i];
6458
6459 if (offset >= params.beacon_csa.probe_resp_len)
6460 return -EINVAL;
6461
6462 if (params.beacon_csa.probe_resp[offset] !=
6463 params.count)
6464 return -EINVAL;
6465 }
6466 }
6467
6468 skip_beacons:
6469 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6470 if (err)
6471 return err;
6472
6473 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6474 wdev->iftype))
6475 return -EINVAL;
6476
6477 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6478 &params.chandef,
6479 wdev->iftype);
6480 if (err < 0)
6481 return err;
6482
6483 if (err > 0)
6484 params.radar_required = true;
6485
6486 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6487 params.block_tx = true;
6488
6489 wdev_lock(wdev);
6490 err = rdev_channel_switch(rdev, dev, &params);
6491 wdev_unlock(wdev);
6492
6493 return err;
6494 }
6495
6496 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6497 u32 seq, int flags,
6498 struct cfg80211_registered_device *rdev,
6499 struct wireless_dev *wdev,
6500 struct cfg80211_internal_bss *intbss)
6501 {
6502 struct cfg80211_bss *res = &intbss->pub;
6503 const struct cfg80211_bss_ies *ies;
6504 void *hdr;
6505 struct nlattr *bss;
6506
6507 ASSERT_WDEV_LOCK(wdev);
6508
6509 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6510 NL80211_CMD_NEW_SCAN_RESULTS);
6511 if (!hdr)
6512 return -1;
6513
6514 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6515
6516 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6517 goto nla_put_failure;
6518 if (wdev->netdev &&
6519 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6520 goto nla_put_failure;
6521 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6522 goto nla_put_failure;
6523
6524 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6525 if (!bss)
6526 goto nla_put_failure;
6527 if ((!is_zero_ether_addr(res->bssid) &&
6528 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6529 goto nla_put_failure;
6530
6531 rcu_read_lock();
6532 /* indicate whether we have probe response data or not */
6533 if (rcu_access_pointer(res->proberesp_ies) &&
6534 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6535 goto fail_unlock_rcu;
6536
6537 /* this pointer prefers to be pointed to probe response data
6538 * but is always valid
6539 */
6540 ies = rcu_dereference(res->ies);
6541 if (ies) {
6542 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6543 goto fail_unlock_rcu;
6544 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6545 ies->len, ies->data))
6546 goto fail_unlock_rcu;
6547 }
6548
6549 /* and this pointer is always (unless driver didn't know) beacon data */
6550 ies = rcu_dereference(res->beacon_ies);
6551 if (ies && ies->from_beacon) {
6552 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6553 goto fail_unlock_rcu;
6554 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6555 ies->len, ies->data))
6556 goto fail_unlock_rcu;
6557 }
6558 rcu_read_unlock();
6559
6560 if (res->beacon_interval &&
6561 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6562 goto nla_put_failure;
6563 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6564 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6565 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6566 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6567 jiffies_to_msecs(jiffies - intbss->ts)))
6568 goto nla_put_failure;
6569
6570 switch (rdev->wiphy.signal_type) {
6571 case CFG80211_SIGNAL_TYPE_MBM:
6572 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6573 goto nla_put_failure;
6574 break;
6575 case CFG80211_SIGNAL_TYPE_UNSPEC:
6576 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6577 goto nla_put_failure;
6578 break;
6579 default:
6580 break;
6581 }
6582
6583 switch (wdev->iftype) {
6584 case NL80211_IFTYPE_P2P_CLIENT:
6585 case NL80211_IFTYPE_STATION:
6586 if (intbss == wdev->current_bss &&
6587 nla_put_u32(msg, NL80211_BSS_STATUS,
6588 NL80211_BSS_STATUS_ASSOCIATED))
6589 goto nla_put_failure;
6590 break;
6591 case NL80211_IFTYPE_ADHOC:
6592 if (intbss == wdev->current_bss &&
6593 nla_put_u32(msg, NL80211_BSS_STATUS,
6594 NL80211_BSS_STATUS_IBSS_JOINED))
6595 goto nla_put_failure;
6596 break;
6597 default:
6598 break;
6599 }
6600
6601 nla_nest_end(msg, bss);
6602
6603 genlmsg_end(msg, hdr);
6604 return 0;
6605
6606 fail_unlock_rcu:
6607 rcu_read_unlock();
6608 nla_put_failure:
6609 genlmsg_cancel(msg, hdr);
6610 return -EMSGSIZE;
6611 }
6612
6613 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6614 {
6615 struct cfg80211_registered_device *rdev;
6616 struct cfg80211_internal_bss *scan;
6617 struct wireless_dev *wdev;
6618 int start = cb->args[2], idx = 0;
6619 int err;
6620
6621 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6622 if (err)
6623 return err;
6624
6625 wdev_lock(wdev);
6626 spin_lock_bh(&rdev->bss_lock);
6627 cfg80211_bss_expire(rdev);
6628
6629 cb->seq = rdev->bss_generation;
6630
6631 list_for_each_entry(scan, &rdev->bss_list, list) {
6632 if (++idx <= start)
6633 continue;
6634 if (nl80211_send_bss(skb, cb,
6635 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6636 rdev, wdev, scan) < 0) {
6637 idx--;
6638 break;
6639 }
6640 }
6641
6642 spin_unlock_bh(&rdev->bss_lock);
6643 wdev_unlock(wdev);
6644
6645 cb->args[2] = idx;
6646 nl80211_finish_wdev_dump(rdev);
6647
6648 return skb->len;
6649 }
6650
6651 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6652 int flags, struct net_device *dev,
6653 bool allow_radio_stats,
6654 struct survey_info *survey)
6655 {
6656 void *hdr;
6657 struct nlattr *infoattr;
6658
6659 /* skip radio stats if userspace didn't request them */
6660 if (!survey->channel && !allow_radio_stats)
6661 return 0;
6662
6663 hdr = nl80211hdr_put(msg, portid, seq, flags,
6664 NL80211_CMD_NEW_SURVEY_RESULTS);
6665 if (!hdr)
6666 return -ENOMEM;
6667
6668 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6669 goto nla_put_failure;
6670
6671 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6672 if (!infoattr)
6673 goto nla_put_failure;
6674
6675 if (survey->channel &&
6676 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6677 survey->channel->center_freq))
6678 goto nla_put_failure;
6679
6680 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6681 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6682 goto nla_put_failure;
6683 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6684 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6685 goto nla_put_failure;
6686 if ((survey->filled & SURVEY_INFO_TIME) &&
6687 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6688 survey->time))
6689 goto nla_put_failure;
6690 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6691 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6692 survey->time_busy))
6693 goto nla_put_failure;
6694 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6695 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6696 survey->time_ext_busy))
6697 goto nla_put_failure;
6698 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6699 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6700 survey->time_rx))
6701 goto nla_put_failure;
6702 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6703 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6704 survey->time_tx))
6705 goto nla_put_failure;
6706 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6707 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6708 survey->time_scan))
6709 goto nla_put_failure;
6710
6711 nla_nest_end(msg, infoattr);
6712
6713 genlmsg_end(msg, hdr);
6714 return 0;
6715
6716 nla_put_failure:
6717 genlmsg_cancel(msg, hdr);
6718 return -EMSGSIZE;
6719 }
6720
6721 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6722 {
6723 struct survey_info survey;
6724 struct cfg80211_registered_device *rdev;
6725 struct wireless_dev *wdev;
6726 int survey_idx = cb->args[2];
6727 int res;
6728 bool radio_stats;
6729
6730 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6731 if (res)
6732 return res;
6733
6734 /* prepare_wdev_dump parsed the attributes */
6735 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6736
6737 if (!wdev->netdev) {
6738 res = -EINVAL;
6739 goto out_err;
6740 }
6741
6742 if (!rdev->ops->dump_survey) {
6743 res = -EOPNOTSUPP;
6744 goto out_err;
6745 }
6746
6747 while (1) {
6748 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6749 if (res == -ENOENT)
6750 break;
6751 if (res)
6752 goto out_err;
6753
6754 /* don't send disabled channels, but do send non-channel data */
6755 if (survey.channel &&
6756 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6757 survey_idx++;
6758 continue;
6759 }
6760
6761 if (nl80211_send_survey(skb,
6762 NETLINK_CB(cb->skb).portid,
6763 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6764 wdev->netdev, radio_stats, &survey) < 0)
6765 goto out;
6766 survey_idx++;
6767 }
6768
6769 out:
6770 cb->args[2] = survey_idx;
6771 res = skb->len;
6772 out_err:
6773 nl80211_finish_wdev_dump(rdev);
6774 return res;
6775 }
6776
6777 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6778 {
6779 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6780 NL80211_WPA_VERSION_2));
6781 }
6782
6783 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6784 {
6785 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6786 struct net_device *dev = info->user_ptr[1];
6787 struct ieee80211_channel *chan;
6788 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6789 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6790 enum nl80211_auth_type auth_type;
6791 struct key_parse key;
6792 bool local_state_change;
6793
6794 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6795 return -EINVAL;
6796
6797 if (!info->attrs[NL80211_ATTR_MAC])
6798 return -EINVAL;
6799
6800 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6801 return -EINVAL;
6802
6803 if (!info->attrs[NL80211_ATTR_SSID])
6804 return -EINVAL;
6805
6806 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6807 return -EINVAL;
6808
6809 err = nl80211_parse_key(info, &key);
6810 if (err)
6811 return err;
6812
6813 if (key.idx >= 0) {
6814 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6815 return -EINVAL;
6816 if (!key.p.key || !key.p.key_len)
6817 return -EINVAL;
6818 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6819 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6820 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6821 key.p.key_len != WLAN_KEY_LEN_WEP104))
6822 return -EINVAL;
6823 if (key.idx > 4)
6824 return -EINVAL;
6825 } else {
6826 key.p.key_len = 0;
6827 key.p.key = NULL;
6828 }
6829
6830 if (key.idx >= 0) {
6831 int i;
6832 bool ok = false;
6833 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6834 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6835 ok = true;
6836 break;
6837 }
6838 }
6839 if (!ok)
6840 return -EINVAL;
6841 }
6842
6843 if (!rdev->ops->auth)
6844 return -EOPNOTSUPP;
6845
6846 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6847 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6848 return -EOPNOTSUPP;
6849
6850 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6851 chan = nl80211_get_valid_chan(&rdev->wiphy,
6852 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6853 if (!chan)
6854 return -EINVAL;
6855
6856 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6857 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6858
6859 if (info->attrs[NL80211_ATTR_IE]) {
6860 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6861 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6862 }
6863
6864 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6865 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6866 return -EINVAL;
6867
6868 if (auth_type == NL80211_AUTHTYPE_SAE &&
6869 !info->attrs[NL80211_ATTR_SAE_DATA])
6870 return -EINVAL;
6871
6872 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6873 if (auth_type != NL80211_AUTHTYPE_SAE)
6874 return -EINVAL;
6875 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6876 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6877 /* need to include at least Auth Transaction and Status Code */
6878 if (sae_data_len < 4)
6879 return -EINVAL;
6880 }
6881
6882 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6883
6884 /*
6885 * Since we no longer track auth state, ignore
6886 * requests to only change local state.
6887 */
6888 if (local_state_change)
6889 return 0;
6890
6891 wdev_lock(dev->ieee80211_ptr);
6892 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6893 ssid, ssid_len, ie, ie_len,
6894 key.p.key, key.p.key_len, key.idx,
6895 sae_data, sae_data_len);
6896 wdev_unlock(dev->ieee80211_ptr);
6897 return err;
6898 }
6899
6900 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6901 struct genl_info *info,
6902 struct cfg80211_crypto_settings *settings,
6903 int cipher_limit)
6904 {
6905 memset(settings, 0, sizeof(*settings));
6906
6907 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6908
6909 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6910 u16 proto;
6911 proto = nla_get_u16(
6912 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6913 settings->control_port_ethertype = cpu_to_be16(proto);
6914 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6915 proto != ETH_P_PAE)
6916 return -EINVAL;
6917 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6918 settings->control_port_no_encrypt = true;
6919 } else
6920 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6921
6922 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6923 void *data;
6924 int len, i;
6925
6926 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6927 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6928 settings->n_ciphers_pairwise = len / sizeof(u32);
6929
6930 if (len % sizeof(u32))
6931 return -EINVAL;
6932
6933 if (settings->n_ciphers_pairwise > cipher_limit)
6934 return -EINVAL;
6935
6936 memcpy(settings->ciphers_pairwise, data, len);
6937
6938 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6939 if (!cfg80211_supported_cipher_suite(
6940 &rdev->wiphy,
6941 settings->ciphers_pairwise[i]))
6942 return -EINVAL;
6943 }
6944
6945 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6946 settings->cipher_group =
6947 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6948 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6949 settings->cipher_group))
6950 return -EINVAL;
6951 }
6952
6953 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6954 settings->wpa_versions =
6955 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6956 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6957 return -EINVAL;
6958 }
6959
6960 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6961 void *data;
6962 int len;
6963
6964 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6965 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6966 settings->n_akm_suites = len / sizeof(u32);
6967
6968 if (len % sizeof(u32))
6969 return -EINVAL;
6970
6971 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6972 return -EINVAL;
6973
6974 memcpy(settings->akm_suites, data, len);
6975 }
6976
6977 return 0;
6978 }
6979
6980 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6981 {
6982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6983 struct net_device *dev = info->user_ptr[1];
6984 struct ieee80211_channel *chan;
6985 struct cfg80211_assoc_request req = {};
6986 const u8 *bssid, *ssid;
6987 int err, ssid_len = 0;
6988
6989 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6990 return -EINVAL;
6991
6992 if (!info->attrs[NL80211_ATTR_MAC] ||
6993 !info->attrs[NL80211_ATTR_SSID] ||
6994 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6995 return -EINVAL;
6996
6997 if (!rdev->ops->assoc)
6998 return -EOPNOTSUPP;
6999
7000 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7001 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7002 return -EOPNOTSUPP;
7003
7004 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7005
7006 chan = nl80211_get_valid_chan(&rdev->wiphy,
7007 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7008 if (!chan)
7009 return -EINVAL;
7010
7011 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7012 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7013
7014 if (info->attrs[NL80211_ATTR_IE]) {
7015 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7016 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7017 }
7018
7019 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7020 enum nl80211_mfp mfp =
7021 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7022 if (mfp == NL80211_MFP_REQUIRED)
7023 req.use_mfp = true;
7024 else if (mfp != NL80211_MFP_NO)
7025 return -EINVAL;
7026 }
7027
7028 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7029 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7030
7031 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7032 req.flags |= ASSOC_REQ_DISABLE_HT;
7033
7034 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7035 memcpy(&req.ht_capa_mask,
7036 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7037 sizeof(req.ht_capa_mask));
7038
7039 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7040 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7041 return -EINVAL;
7042 memcpy(&req.ht_capa,
7043 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7044 sizeof(req.ht_capa));
7045 }
7046
7047 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7048 req.flags |= ASSOC_REQ_DISABLE_VHT;
7049
7050 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7051 memcpy(&req.vht_capa_mask,
7052 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7053 sizeof(req.vht_capa_mask));
7054
7055 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7056 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7057 return -EINVAL;
7058 memcpy(&req.vht_capa,
7059 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7060 sizeof(req.vht_capa));
7061 }
7062
7063 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7064 if (!(rdev->wiphy.features &
7065 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7066 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7067 return -EINVAL;
7068 req.flags |= ASSOC_REQ_USE_RRM;
7069 }
7070
7071 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7072 if (!err) {
7073 wdev_lock(dev->ieee80211_ptr);
7074 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7075 ssid, ssid_len, &req);
7076 wdev_unlock(dev->ieee80211_ptr);
7077 }
7078
7079 return err;
7080 }
7081
7082 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7083 {
7084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7085 struct net_device *dev = info->user_ptr[1];
7086 const u8 *ie = NULL, *bssid;
7087 int ie_len = 0, err;
7088 u16 reason_code;
7089 bool local_state_change;
7090
7091 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7092 return -EINVAL;
7093
7094 if (!info->attrs[NL80211_ATTR_MAC])
7095 return -EINVAL;
7096
7097 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7098 return -EINVAL;
7099
7100 if (!rdev->ops->deauth)
7101 return -EOPNOTSUPP;
7102
7103 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7104 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7105 return -EOPNOTSUPP;
7106
7107 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7108
7109 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7110 if (reason_code == 0) {
7111 /* Reason Code 0 is reserved */
7112 return -EINVAL;
7113 }
7114
7115 if (info->attrs[NL80211_ATTR_IE]) {
7116 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7117 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7118 }
7119
7120 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7121
7122 wdev_lock(dev->ieee80211_ptr);
7123 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7124 local_state_change);
7125 wdev_unlock(dev->ieee80211_ptr);
7126 return err;
7127 }
7128
7129 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7130 {
7131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7132 struct net_device *dev = info->user_ptr[1];
7133 const u8 *ie = NULL, *bssid;
7134 int ie_len = 0, err;
7135 u16 reason_code;
7136 bool local_state_change;
7137
7138 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7139 return -EINVAL;
7140
7141 if (!info->attrs[NL80211_ATTR_MAC])
7142 return -EINVAL;
7143
7144 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7145 return -EINVAL;
7146
7147 if (!rdev->ops->disassoc)
7148 return -EOPNOTSUPP;
7149
7150 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7151 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7152 return -EOPNOTSUPP;
7153
7154 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7155
7156 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7157 if (reason_code == 0) {
7158 /* Reason Code 0 is reserved */
7159 return -EINVAL;
7160 }
7161
7162 if (info->attrs[NL80211_ATTR_IE]) {
7163 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7164 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7165 }
7166
7167 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7168
7169 wdev_lock(dev->ieee80211_ptr);
7170 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7171 local_state_change);
7172 wdev_unlock(dev->ieee80211_ptr);
7173 return err;
7174 }
7175
7176 static bool
7177 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7178 int mcast_rate[IEEE80211_NUM_BANDS],
7179 int rateval)
7180 {
7181 struct wiphy *wiphy = &rdev->wiphy;
7182 bool found = false;
7183 int band, i;
7184
7185 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7186 struct ieee80211_supported_band *sband;
7187
7188 sband = wiphy->bands[band];
7189 if (!sband)
7190 continue;
7191
7192 for (i = 0; i < sband->n_bitrates; i++) {
7193 if (sband->bitrates[i].bitrate == rateval) {
7194 mcast_rate[band] = i + 1;
7195 found = true;
7196 break;
7197 }
7198 }
7199 }
7200
7201 return found;
7202 }
7203
7204 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7205 {
7206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7207 struct net_device *dev = info->user_ptr[1];
7208 struct cfg80211_ibss_params ibss;
7209 struct wiphy *wiphy;
7210 struct cfg80211_cached_keys *connkeys = NULL;
7211 int err;
7212
7213 memset(&ibss, 0, sizeof(ibss));
7214
7215 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7216 return -EINVAL;
7217
7218 if (!info->attrs[NL80211_ATTR_SSID] ||
7219 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7220 return -EINVAL;
7221
7222 ibss.beacon_interval = 100;
7223
7224 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7225 ibss.beacon_interval =
7226 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7227 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7228 return -EINVAL;
7229 }
7230
7231 if (!rdev->ops->join_ibss)
7232 return -EOPNOTSUPP;
7233
7234 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7235 return -EOPNOTSUPP;
7236
7237 wiphy = &rdev->wiphy;
7238
7239 if (info->attrs[NL80211_ATTR_MAC]) {
7240 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7241
7242 if (!is_valid_ether_addr(ibss.bssid))
7243 return -EINVAL;
7244 }
7245 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7246 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7247
7248 if (info->attrs[NL80211_ATTR_IE]) {
7249 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7250 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7251 }
7252
7253 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7254 if (err)
7255 return err;
7256
7257 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7258 NL80211_IFTYPE_ADHOC))
7259 return -EINVAL;
7260
7261 switch (ibss.chandef.width) {
7262 case NL80211_CHAN_WIDTH_5:
7263 case NL80211_CHAN_WIDTH_10:
7264 case NL80211_CHAN_WIDTH_20_NOHT:
7265 break;
7266 case NL80211_CHAN_WIDTH_20:
7267 case NL80211_CHAN_WIDTH_40:
7268 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7269 break;
7270 default:
7271 return -EINVAL;
7272 }
7273
7274 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7275 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7276
7277 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7278 u8 *rates =
7279 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7280 int n_rates =
7281 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7282 struct ieee80211_supported_band *sband =
7283 wiphy->bands[ibss.chandef.chan->band];
7284
7285 err = ieee80211_get_ratemask(sband, rates, n_rates,
7286 &ibss.basic_rates);
7287 if (err)
7288 return err;
7289 }
7290
7291 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7292 memcpy(&ibss.ht_capa_mask,
7293 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7294 sizeof(ibss.ht_capa_mask));
7295
7296 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7297 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7298 return -EINVAL;
7299 memcpy(&ibss.ht_capa,
7300 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7301 sizeof(ibss.ht_capa));
7302 }
7303
7304 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7305 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7306 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7307 return -EINVAL;
7308
7309 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7310 bool no_ht = false;
7311
7312 connkeys = nl80211_parse_connkeys(rdev,
7313 info->attrs[NL80211_ATTR_KEYS],
7314 &no_ht);
7315 if (IS_ERR(connkeys))
7316 return PTR_ERR(connkeys);
7317
7318 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7319 no_ht) {
7320 kfree(connkeys);
7321 return -EINVAL;
7322 }
7323 }
7324
7325 ibss.control_port =
7326 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7327
7328 ibss.userspace_handles_dfs =
7329 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7330
7331 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7332 if (err)
7333 kzfree(connkeys);
7334 return err;
7335 }
7336
7337 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7338 {
7339 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7340 struct net_device *dev = info->user_ptr[1];
7341
7342 if (!rdev->ops->leave_ibss)
7343 return -EOPNOTSUPP;
7344
7345 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7346 return -EOPNOTSUPP;
7347
7348 return cfg80211_leave_ibss(rdev, dev, false);
7349 }
7350
7351 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7352 {
7353 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7354 struct net_device *dev = info->user_ptr[1];
7355 int mcast_rate[IEEE80211_NUM_BANDS];
7356 u32 nla_rate;
7357 int err;
7358
7359 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7360 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7361 return -EOPNOTSUPP;
7362
7363 if (!rdev->ops->set_mcast_rate)
7364 return -EOPNOTSUPP;
7365
7366 memset(mcast_rate, 0, sizeof(mcast_rate));
7367
7368 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7369 return -EINVAL;
7370
7371 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7372 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7373 return -EINVAL;
7374
7375 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7376
7377 return err;
7378 }
7379
7380 static struct sk_buff *
7381 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7382 int approxlen, u32 portid, u32 seq,
7383 enum nl80211_commands cmd,
7384 enum nl80211_attrs attr,
7385 const struct nl80211_vendor_cmd_info *info,
7386 gfp_t gfp)
7387 {
7388 struct sk_buff *skb;
7389 void *hdr;
7390 struct nlattr *data;
7391
7392 skb = nlmsg_new(approxlen + 100, gfp);
7393 if (!skb)
7394 return NULL;
7395
7396 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7397 if (!hdr) {
7398 kfree_skb(skb);
7399 return NULL;
7400 }
7401
7402 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7403 goto nla_put_failure;
7404
7405 if (info) {
7406 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7407 info->vendor_id))
7408 goto nla_put_failure;
7409 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7410 info->subcmd))
7411 goto nla_put_failure;
7412 }
7413
7414 data = nla_nest_start(skb, attr);
7415
7416 ((void **)skb->cb)[0] = rdev;
7417 ((void **)skb->cb)[1] = hdr;
7418 ((void **)skb->cb)[2] = data;
7419
7420 return skb;
7421
7422 nla_put_failure:
7423 kfree_skb(skb);
7424 return NULL;
7425 }
7426
7427 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7428 enum nl80211_commands cmd,
7429 enum nl80211_attrs attr,
7430 int vendor_event_idx,
7431 int approxlen, gfp_t gfp)
7432 {
7433 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7434 const struct nl80211_vendor_cmd_info *info;
7435
7436 switch (cmd) {
7437 case NL80211_CMD_TESTMODE:
7438 if (WARN_ON(vendor_event_idx != -1))
7439 return NULL;
7440 info = NULL;
7441 break;
7442 case NL80211_CMD_VENDOR:
7443 if (WARN_ON(vendor_event_idx < 0 ||
7444 vendor_event_idx >= wiphy->n_vendor_events))
7445 return NULL;
7446 info = &wiphy->vendor_events[vendor_event_idx];
7447 break;
7448 default:
7449 WARN_ON(1);
7450 return NULL;
7451 }
7452
7453 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7454 cmd, attr, info, gfp);
7455 }
7456 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7457
7458 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7459 {
7460 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7461 void *hdr = ((void **)skb->cb)[1];
7462 struct nlattr *data = ((void **)skb->cb)[2];
7463 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7464
7465 /* clear CB data for netlink core to own from now on */
7466 memset(skb->cb, 0, sizeof(skb->cb));
7467
7468 nla_nest_end(skb, data);
7469 genlmsg_end(skb, hdr);
7470
7471 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7472 mcgrp = NL80211_MCGRP_VENDOR;
7473
7474 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7475 mcgrp, gfp);
7476 }
7477 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7478
7479 #ifdef CONFIG_NL80211_TESTMODE
7480 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7481 {
7482 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7483 struct wireless_dev *wdev =
7484 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7485 int err;
7486
7487 if (!rdev->ops->testmode_cmd)
7488 return -EOPNOTSUPP;
7489
7490 if (IS_ERR(wdev)) {
7491 err = PTR_ERR(wdev);
7492 if (err != -EINVAL)
7493 return err;
7494 wdev = NULL;
7495 } else if (wdev->wiphy != &rdev->wiphy) {
7496 return -EINVAL;
7497 }
7498
7499 if (!info->attrs[NL80211_ATTR_TESTDATA])
7500 return -EINVAL;
7501
7502 rdev->cur_cmd_info = info;
7503 err = rdev_testmode_cmd(rdev, wdev,
7504 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7505 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7506 rdev->cur_cmd_info = NULL;
7507
7508 return err;
7509 }
7510
7511 static int nl80211_testmode_dump(struct sk_buff *skb,
7512 struct netlink_callback *cb)
7513 {
7514 struct cfg80211_registered_device *rdev;
7515 int err;
7516 long phy_idx;
7517 void *data = NULL;
7518 int data_len = 0;
7519
7520 rtnl_lock();
7521
7522 if (cb->args[0]) {
7523 /*
7524 * 0 is a valid index, but not valid for args[0],
7525 * so we need to offset by 1.
7526 */
7527 phy_idx = cb->args[0] - 1;
7528 } else {
7529 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7530 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7531 nl80211_policy);
7532 if (err)
7533 goto out_err;
7534
7535 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7536 nl80211_fam.attrbuf);
7537 if (IS_ERR(rdev)) {
7538 err = PTR_ERR(rdev);
7539 goto out_err;
7540 }
7541 phy_idx = rdev->wiphy_idx;
7542 rdev = NULL;
7543
7544 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7545 cb->args[1] =
7546 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7547 }
7548
7549 if (cb->args[1]) {
7550 data = nla_data((void *)cb->args[1]);
7551 data_len = nla_len((void *)cb->args[1]);
7552 }
7553
7554 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7555 if (!rdev) {
7556 err = -ENOENT;
7557 goto out_err;
7558 }
7559
7560 if (!rdev->ops->testmode_dump) {
7561 err = -EOPNOTSUPP;
7562 goto out_err;
7563 }
7564
7565 while (1) {
7566 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7567 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7568 NL80211_CMD_TESTMODE);
7569 struct nlattr *tmdata;
7570
7571 if (!hdr)
7572 break;
7573
7574 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7575 genlmsg_cancel(skb, hdr);
7576 break;
7577 }
7578
7579 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7580 if (!tmdata) {
7581 genlmsg_cancel(skb, hdr);
7582 break;
7583 }
7584 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7585 nla_nest_end(skb, tmdata);
7586
7587 if (err == -ENOBUFS || err == -ENOENT) {
7588 genlmsg_cancel(skb, hdr);
7589 break;
7590 } else if (err) {
7591 genlmsg_cancel(skb, hdr);
7592 goto out_err;
7593 }
7594
7595 genlmsg_end(skb, hdr);
7596 }
7597
7598 err = skb->len;
7599 /* see above */
7600 cb->args[0] = phy_idx + 1;
7601 out_err:
7602 rtnl_unlock();
7603 return err;
7604 }
7605 #endif
7606
7607 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7608 {
7609 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7610 struct net_device *dev = info->user_ptr[1];
7611 struct cfg80211_connect_params connect;
7612 struct wiphy *wiphy;
7613 struct cfg80211_cached_keys *connkeys = NULL;
7614 int err;
7615
7616 memset(&connect, 0, sizeof(connect));
7617
7618 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7619 return -EINVAL;
7620
7621 if (!info->attrs[NL80211_ATTR_SSID] ||
7622 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7623 return -EINVAL;
7624
7625 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7626 connect.auth_type =
7627 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7628 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7629 NL80211_CMD_CONNECT))
7630 return -EINVAL;
7631 } else
7632 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7633
7634 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7635
7636 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7637 NL80211_MAX_NR_CIPHER_SUITES);
7638 if (err)
7639 return err;
7640
7641 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7642 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7643 return -EOPNOTSUPP;
7644
7645 wiphy = &rdev->wiphy;
7646
7647 connect.bg_scan_period = -1;
7648 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7649 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7650 connect.bg_scan_period =
7651 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7652 }
7653
7654 if (info->attrs[NL80211_ATTR_MAC])
7655 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7656 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7657 connect.bssid_hint =
7658 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7659 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7660 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7661
7662 if (info->attrs[NL80211_ATTR_IE]) {
7663 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7664 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7665 }
7666
7667 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7668 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7669 if (connect.mfp != NL80211_MFP_REQUIRED &&
7670 connect.mfp != NL80211_MFP_NO)
7671 return -EINVAL;
7672 } else {
7673 connect.mfp = NL80211_MFP_NO;
7674 }
7675
7676 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7677 connect.channel = nl80211_get_valid_chan(
7678 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7679 if (!connect.channel)
7680 return -EINVAL;
7681 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7682 connect.channel_hint = nl80211_get_valid_chan(
7683 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7684 if (!connect.channel_hint)
7685 return -EINVAL;
7686 }
7687
7688 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7689 connkeys = nl80211_parse_connkeys(rdev,
7690 info->attrs[NL80211_ATTR_KEYS], NULL);
7691 if (IS_ERR(connkeys))
7692 return PTR_ERR(connkeys);
7693 }
7694
7695 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7696 connect.flags |= ASSOC_REQ_DISABLE_HT;
7697
7698 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7699 memcpy(&connect.ht_capa_mask,
7700 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7701 sizeof(connect.ht_capa_mask));
7702
7703 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7704 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7705 kzfree(connkeys);
7706 return -EINVAL;
7707 }
7708 memcpy(&connect.ht_capa,
7709 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7710 sizeof(connect.ht_capa));
7711 }
7712
7713 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7714 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7715
7716 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7717 memcpy(&connect.vht_capa_mask,
7718 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7719 sizeof(connect.vht_capa_mask));
7720
7721 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7722 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7723 kzfree(connkeys);
7724 return -EINVAL;
7725 }
7726 memcpy(&connect.vht_capa,
7727 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7728 sizeof(connect.vht_capa));
7729 }
7730
7731 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7732 if (!(rdev->wiphy.features &
7733 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7734 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7735 return -EINVAL;
7736 connect.flags |= ASSOC_REQ_USE_RRM;
7737 }
7738
7739 wdev_lock(dev->ieee80211_ptr);
7740 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7741 wdev_unlock(dev->ieee80211_ptr);
7742 if (err)
7743 kzfree(connkeys);
7744 return err;
7745 }
7746
7747 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7748 {
7749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7750 struct net_device *dev = info->user_ptr[1];
7751 u16 reason;
7752 int ret;
7753
7754 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7755 reason = WLAN_REASON_DEAUTH_LEAVING;
7756 else
7757 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7758
7759 if (reason == 0)
7760 return -EINVAL;
7761
7762 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7763 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7764 return -EOPNOTSUPP;
7765
7766 wdev_lock(dev->ieee80211_ptr);
7767 ret = cfg80211_disconnect(rdev, dev, reason, true);
7768 wdev_unlock(dev->ieee80211_ptr);
7769 return ret;
7770 }
7771
7772 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7773 {
7774 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7775 struct net *net;
7776 int err;
7777
7778 if (info->attrs[NL80211_ATTR_PID]) {
7779 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7780
7781 net = get_net_ns_by_pid(pid);
7782 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
7783 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
7784
7785 net = get_net_ns_by_fd(fd);
7786 } else {
7787 return -EINVAL;
7788 }
7789
7790 if (IS_ERR(net))
7791 return PTR_ERR(net);
7792
7793 err = 0;
7794
7795 /* check if anything to do */
7796 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7797 err = cfg80211_switch_netns(rdev, net);
7798
7799 put_net(net);
7800 return err;
7801 }
7802
7803 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7804 {
7805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7806 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7807 struct cfg80211_pmksa *pmksa) = NULL;
7808 struct net_device *dev = info->user_ptr[1];
7809 struct cfg80211_pmksa pmksa;
7810
7811 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7812
7813 if (!info->attrs[NL80211_ATTR_MAC])
7814 return -EINVAL;
7815
7816 if (!info->attrs[NL80211_ATTR_PMKID])
7817 return -EINVAL;
7818
7819 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7820 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7821
7822 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7823 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7824 return -EOPNOTSUPP;
7825
7826 switch (info->genlhdr->cmd) {
7827 case NL80211_CMD_SET_PMKSA:
7828 rdev_ops = rdev->ops->set_pmksa;
7829 break;
7830 case NL80211_CMD_DEL_PMKSA:
7831 rdev_ops = rdev->ops->del_pmksa;
7832 break;
7833 default:
7834 WARN_ON(1);
7835 break;
7836 }
7837
7838 if (!rdev_ops)
7839 return -EOPNOTSUPP;
7840
7841 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7842 }
7843
7844 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7845 {
7846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7847 struct net_device *dev = info->user_ptr[1];
7848
7849 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7850 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7851 return -EOPNOTSUPP;
7852
7853 if (!rdev->ops->flush_pmksa)
7854 return -EOPNOTSUPP;
7855
7856 return rdev_flush_pmksa(rdev, dev);
7857 }
7858
7859 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7860 {
7861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7862 struct net_device *dev = info->user_ptr[1];
7863 u8 action_code, dialog_token;
7864 u32 peer_capability = 0;
7865 u16 status_code;
7866 u8 *peer;
7867 bool initiator;
7868
7869 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7870 !rdev->ops->tdls_mgmt)
7871 return -EOPNOTSUPP;
7872
7873 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7874 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7875 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7876 !info->attrs[NL80211_ATTR_IE] ||
7877 !info->attrs[NL80211_ATTR_MAC])
7878 return -EINVAL;
7879
7880 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7881 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7882 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7883 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7884 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7885 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7886 peer_capability =
7887 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7888
7889 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7890 dialog_token, status_code, peer_capability,
7891 initiator,
7892 nla_data(info->attrs[NL80211_ATTR_IE]),
7893 nla_len(info->attrs[NL80211_ATTR_IE]));
7894 }
7895
7896 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7897 {
7898 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7899 struct net_device *dev = info->user_ptr[1];
7900 enum nl80211_tdls_operation operation;
7901 u8 *peer;
7902
7903 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7904 !rdev->ops->tdls_oper)
7905 return -EOPNOTSUPP;
7906
7907 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7908 !info->attrs[NL80211_ATTR_MAC])
7909 return -EINVAL;
7910
7911 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7912 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7913
7914 return rdev_tdls_oper(rdev, dev, peer, operation);
7915 }
7916
7917 static int nl80211_remain_on_channel(struct sk_buff *skb,
7918 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 struct cfg80211_chan_def chandef;
7923 struct sk_buff *msg;
7924 void *hdr;
7925 u64 cookie;
7926 u32 duration;
7927 int err;
7928
7929 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7930 !info->attrs[NL80211_ATTR_DURATION])
7931 return -EINVAL;
7932
7933 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7934
7935 if (!rdev->ops->remain_on_channel ||
7936 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7937 return -EOPNOTSUPP;
7938
7939 /*
7940 * We should be on that channel for at least a minimum amount of
7941 * time (10ms) but no longer than the driver supports.
7942 */
7943 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7944 duration > rdev->wiphy.max_remain_on_channel_duration)
7945 return -EINVAL;
7946
7947 err = nl80211_parse_chandef(rdev, info, &chandef);
7948 if (err)
7949 return err;
7950
7951 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7952 if (!msg)
7953 return -ENOMEM;
7954
7955 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7956 NL80211_CMD_REMAIN_ON_CHANNEL);
7957 if (!hdr) {
7958 err = -ENOBUFS;
7959 goto free_msg;
7960 }
7961
7962 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7963 duration, &cookie);
7964
7965 if (err)
7966 goto free_msg;
7967
7968 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7969 goto nla_put_failure;
7970
7971 genlmsg_end(msg, hdr);
7972
7973 return genlmsg_reply(msg, info);
7974
7975 nla_put_failure:
7976 err = -ENOBUFS;
7977 free_msg:
7978 nlmsg_free(msg);
7979 return err;
7980 }
7981
7982 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7983 struct genl_info *info)
7984 {
7985 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7986 struct wireless_dev *wdev = info->user_ptr[1];
7987 u64 cookie;
7988
7989 if (!info->attrs[NL80211_ATTR_COOKIE])
7990 return -EINVAL;
7991
7992 if (!rdev->ops->cancel_remain_on_channel)
7993 return -EOPNOTSUPP;
7994
7995 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7996
7997 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7998 }
7999
8000 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8001 u8 *rates, u8 rates_len)
8002 {
8003 u8 i;
8004 u32 mask = 0;
8005
8006 for (i = 0; i < rates_len; i++) {
8007 int rate = (rates[i] & 0x7f) * 5;
8008 int ridx;
8009 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8010 struct ieee80211_rate *srate =
8011 &sband->bitrates[ridx];
8012 if (rate == srate->bitrate) {
8013 mask |= 1 << ridx;
8014 break;
8015 }
8016 }
8017 if (ridx == sband->n_bitrates)
8018 return 0; /* rate not found */
8019 }
8020
8021 return mask;
8022 }
8023
8024 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8025 u8 *rates, u8 rates_len,
8026 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8027 {
8028 u8 i;
8029
8030 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8031
8032 for (i = 0; i < rates_len; i++) {
8033 int ridx, rbit;
8034
8035 ridx = rates[i] / 8;
8036 rbit = BIT(rates[i] % 8);
8037
8038 /* check validity */
8039 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8040 return false;
8041
8042 /* check availability */
8043 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8044 mcs[ridx] |= rbit;
8045 else
8046 return false;
8047 }
8048
8049 return true;
8050 }
8051
8052 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8053 {
8054 u16 mcs_mask = 0;
8055
8056 switch (vht_mcs_map) {
8057 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8058 break;
8059 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8060 mcs_mask = 0x00FF;
8061 break;
8062 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8063 mcs_mask = 0x01FF;
8064 break;
8065 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8066 mcs_mask = 0x03FF;
8067 break;
8068 default:
8069 break;
8070 }
8071
8072 return mcs_mask;
8073 }
8074
8075 static void vht_build_mcs_mask(u16 vht_mcs_map,
8076 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8077 {
8078 u8 nss;
8079
8080 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8081 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8082 vht_mcs_map >>= 2;
8083 }
8084 }
8085
8086 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8087 struct nl80211_txrate_vht *txrate,
8088 u16 mcs[NL80211_VHT_NSS_MAX])
8089 {
8090 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8091 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8092 u8 i;
8093
8094 if (!sband->vht_cap.vht_supported)
8095 return false;
8096
8097 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8098
8099 /* Build vht_mcs_mask from VHT capabilities */
8100 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8101
8102 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8103 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8104 mcs[i] = txrate->mcs[i];
8105 else
8106 return false;
8107 }
8108
8109 return true;
8110 }
8111
8112 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8113 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8114 .len = NL80211_MAX_SUPP_RATES },
8115 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8116 .len = NL80211_MAX_SUPP_HT_RATES },
8117 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8118 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8119 };
8120
8121 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8122 struct genl_info *info)
8123 {
8124 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8126 struct cfg80211_bitrate_mask mask;
8127 int rem, i;
8128 struct net_device *dev = info->user_ptr[1];
8129 struct nlattr *tx_rates;
8130 struct ieee80211_supported_band *sband;
8131 u16 vht_tx_mcs_map;
8132
8133 if (!rdev->ops->set_bitrate_mask)
8134 return -EOPNOTSUPP;
8135
8136 memset(&mask, 0, sizeof(mask));
8137 /* Default to all rates enabled */
8138 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8139 sband = rdev->wiphy.bands[i];
8140
8141 if (!sband)
8142 continue;
8143
8144 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8145 memcpy(mask.control[i].ht_mcs,
8146 sband->ht_cap.mcs.rx_mask,
8147 sizeof(mask.control[i].ht_mcs));
8148
8149 if (!sband->vht_cap.vht_supported)
8150 continue;
8151
8152 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8153 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8154 }
8155
8156 /* if no rates are given set it back to the defaults */
8157 if (!info->attrs[NL80211_ATTR_TX_RATES])
8158 goto out;
8159
8160 /*
8161 * The nested attribute uses enum nl80211_band as the index. This maps
8162 * directly to the enum ieee80211_band values used in cfg80211.
8163 */
8164 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8165 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8166 enum ieee80211_band band = nla_type(tx_rates);
8167 int err;
8168
8169 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8170 return -EINVAL;
8171 sband = rdev->wiphy.bands[band];
8172 if (sband == NULL)
8173 return -EINVAL;
8174 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8175 nla_len(tx_rates), nl80211_txattr_policy);
8176 if (err)
8177 return err;
8178 if (tb[NL80211_TXRATE_LEGACY]) {
8179 mask.control[band].legacy = rateset_to_mask(
8180 sband,
8181 nla_data(tb[NL80211_TXRATE_LEGACY]),
8182 nla_len(tb[NL80211_TXRATE_LEGACY]));
8183 if ((mask.control[band].legacy == 0) &&
8184 nla_len(tb[NL80211_TXRATE_LEGACY]))
8185 return -EINVAL;
8186 }
8187 if (tb[NL80211_TXRATE_HT]) {
8188 if (!ht_rateset_to_mask(
8189 sband,
8190 nla_data(tb[NL80211_TXRATE_HT]),
8191 nla_len(tb[NL80211_TXRATE_HT]),
8192 mask.control[band].ht_mcs))
8193 return -EINVAL;
8194 }
8195 if (tb[NL80211_TXRATE_VHT]) {
8196 if (!vht_set_mcs_mask(
8197 sband,
8198 nla_data(tb[NL80211_TXRATE_VHT]),
8199 mask.control[band].vht_mcs))
8200 return -EINVAL;
8201 }
8202 if (tb[NL80211_TXRATE_GI]) {
8203 mask.control[band].gi =
8204 nla_get_u8(tb[NL80211_TXRATE_GI]);
8205 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8206 return -EINVAL;
8207 }
8208
8209 if (mask.control[band].legacy == 0) {
8210 /* don't allow empty legacy rates if HT or VHT
8211 * are not even supported.
8212 */
8213 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8214 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8215 return -EINVAL;
8216
8217 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8218 if (mask.control[band].ht_mcs[i])
8219 goto out;
8220
8221 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8222 if (mask.control[band].vht_mcs[i])
8223 goto out;
8224
8225 /* legacy and mcs rates may not be both empty */
8226 return -EINVAL;
8227 }
8228 }
8229
8230 out:
8231 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8232 }
8233
8234 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8235 {
8236 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8237 struct wireless_dev *wdev = info->user_ptr[1];
8238 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8239
8240 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8241 return -EINVAL;
8242
8243 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8244 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8245
8246 switch (wdev->iftype) {
8247 case NL80211_IFTYPE_STATION:
8248 case NL80211_IFTYPE_ADHOC:
8249 case NL80211_IFTYPE_P2P_CLIENT:
8250 case NL80211_IFTYPE_AP:
8251 case NL80211_IFTYPE_AP_VLAN:
8252 case NL80211_IFTYPE_MESH_POINT:
8253 case NL80211_IFTYPE_P2P_GO:
8254 case NL80211_IFTYPE_P2P_DEVICE:
8255 break;
8256 default:
8257 return -EOPNOTSUPP;
8258 }
8259
8260 /* not much point in registering if we can't reply */
8261 if (!rdev->ops->mgmt_tx)
8262 return -EOPNOTSUPP;
8263
8264 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8265 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8266 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8267 }
8268
8269 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8270 {
8271 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8272 struct wireless_dev *wdev = info->user_ptr[1];
8273 struct cfg80211_chan_def chandef;
8274 int err;
8275 void *hdr = NULL;
8276 u64 cookie;
8277 struct sk_buff *msg = NULL;
8278 struct cfg80211_mgmt_tx_params params = {
8279 .dont_wait_for_ack =
8280 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8281 };
8282
8283 if (!info->attrs[NL80211_ATTR_FRAME])
8284 return -EINVAL;
8285
8286 if (!rdev->ops->mgmt_tx)
8287 return -EOPNOTSUPP;
8288
8289 switch (wdev->iftype) {
8290 case NL80211_IFTYPE_P2P_DEVICE:
8291 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8292 return -EINVAL;
8293 case NL80211_IFTYPE_STATION:
8294 case NL80211_IFTYPE_ADHOC:
8295 case NL80211_IFTYPE_P2P_CLIENT:
8296 case NL80211_IFTYPE_AP:
8297 case NL80211_IFTYPE_AP_VLAN:
8298 case NL80211_IFTYPE_MESH_POINT:
8299 case NL80211_IFTYPE_P2P_GO:
8300 break;
8301 default:
8302 return -EOPNOTSUPP;
8303 }
8304
8305 if (info->attrs[NL80211_ATTR_DURATION]) {
8306 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8307 return -EINVAL;
8308 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8309
8310 /*
8311 * We should wait on the channel for at least a minimum amount
8312 * of time (10ms) but no longer than the driver supports.
8313 */
8314 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8315 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8316 return -EINVAL;
8317
8318 }
8319
8320 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8321
8322 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8323 return -EINVAL;
8324
8325 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8326
8327 /* get the channel if any has been specified, otherwise pass NULL to
8328 * the driver. The latter will use the current one
8329 */
8330 chandef.chan = NULL;
8331 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8332 err = nl80211_parse_chandef(rdev, info, &chandef);
8333 if (err)
8334 return err;
8335 }
8336
8337 if (!chandef.chan && params.offchan)
8338 return -EINVAL;
8339
8340 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8341 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8342
8343 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8344 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8345 int i;
8346
8347 if (len % sizeof(u16))
8348 return -EINVAL;
8349
8350 params.n_csa_offsets = len / sizeof(u16);
8351 params.csa_offsets =
8352 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8353
8354 /* check that all the offsets fit the frame */
8355 for (i = 0; i < params.n_csa_offsets; i++) {
8356 if (params.csa_offsets[i] >= params.len)
8357 return -EINVAL;
8358 }
8359 }
8360
8361 if (!params.dont_wait_for_ack) {
8362 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8363 if (!msg)
8364 return -ENOMEM;
8365
8366 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8367 NL80211_CMD_FRAME);
8368 if (!hdr) {
8369 err = -ENOBUFS;
8370 goto free_msg;
8371 }
8372 }
8373
8374 params.chan = chandef.chan;
8375 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8376 if (err)
8377 goto free_msg;
8378
8379 if (msg) {
8380 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8381 goto nla_put_failure;
8382
8383 genlmsg_end(msg, hdr);
8384 return genlmsg_reply(msg, info);
8385 }
8386
8387 return 0;
8388
8389 nla_put_failure:
8390 err = -ENOBUFS;
8391 free_msg:
8392 nlmsg_free(msg);
8393 return err;
8394 }
8395
8396 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8397 {
8398 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8399 struct wireless_dev *wdev = info->user_ptr[1];
8400 u64 cookie;
8401
8402 if (!info->attrs[NL80211_ATTR_COOKIE])
8403 return -EINVAL;
8404
8405 if (!rdev->ops->mgmt_tx_cancel_wait)
8406 return -EOPNOTSUPP;
8407
8408 switch (wdev->iftype) {
8409 case NL80211_IFTYPE_STATION:
8410 case NL80211_IFTYPE_ADHOC:
8411 case NL80211_IFTYPE_P2P_CLIENT:
8412 case NL80211_IFTYPE_AP:
8413 case NL80211_IFTYPE_AP_VLAN:
8414 case NL80211_IFTYPE_P2P_GO:
8415 case NL80211_IFTYPE_P2P_DEVICE:
8416 break;
8417 default:
8418 return -EOPNOTSUPP;
8419 }
8420
8421 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8422
8423 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8424 }
8425
8426 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8427 {
8428 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8429 struct wireless_dev *wdev;
8430 struct net_device *dev = info->user_ptr[1];
8431 u8 ps_state;
8432 bool state;
8433 int err;
8434
8435 if (!info->attrs[NL80211_ATTR_PS_STATE])
8436 return -EINVAL;
8437
8438 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8439
8440 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8441 return -EINVAL;
8442
8443 wdev = dev->ieee80211_ptr;
8444
8445 if (!rdev->ops->set_power_mgmt)
8446 return -EOPNOTSUPP;
8447
8448 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8449
8450 if (state == wdev->ps)
8451 return 0;
8452
8453 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8454 if (!err)
8455 wdev->ps = state;
8456 return err;
8457 }
8458
8459 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8460 {
8461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8462 enum nl80211_ps_state ps_state;
8463 struct wireless_dev *wdev;
8464 struct net_device *dev = info->user_ptr[1];
8465 struct sk_buff *msg;
8466 void *hdr;
8467 int err;
8468
8469 wdev = dev->ieee80211_ptr;
8470
8471 if (!rdev->ops->set_power_mgmt)
8472 return -EOPNOTSUPP;
8473
8474 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8475 if (!msg)
8476 return -ENOMEM;
8477
8478 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8479 NL80211_CMD_GET_POWER_SAVE);
8480 if (!hdr) {
8481 err = -ENOBUFS;
8482 goto free_msg;
8483 }
8484
8485 if (wdev->ps)
8486 ps_state = NL80211_PS_ENABLED;
8487 else
8488 ps_state = NL80211_PS_DISABLED;
8489
8490 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8491 goto nla_put_failure;
8492
8493 genlmsg_end(msg, hdr);
8494 return genlmsg_reply(msg, info);
8495
8496 nla_put_failure:
8497 err = -ENOBUFS;
8498 free_msg:
8499 nlmsg_free(msg);
8500 return err;
8501 }
8502
8503 static const struct nla_policy
8504 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8505 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8506 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8507 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8508 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8509 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8510 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8511 };
8512
8513 static int nl80211_set_cqm_txe(struct genl_info *info,
8514 u32 rate, u32 pkts, u32 intvl)
8515 {
8516 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8517 struct net_device *dev = info->user_ptr[1];
8518 struct wireless_dev *wdev = dev->ieee80211_ptr;
8519
8520 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8521 return -EINVAL;
8522
8523 if (!rdev->ops->set_cqm_txe_config)
8524 return -EOPNOTSUPP;
8525
8526 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8527 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8528 return -EOPNOTSUPP;
8529
8530 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8531 }
8532
8533 static int nl80211_set_cqm_rssi(struct genl_info *info,
8534 s32 threshold, u32 hysteresis)
8535 {
8536 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8537 struct net_device *dev = info->user_ptr[1];
8538 struct wireless_dev *wdev = dev->ieee80211_ptr;
8539
8540 if (threshold > 0)
8541 return -EINVAL;
8542
8543 /* disabling - hysteresis should also be zero then */
8544 if (threshold == 0)
8545 hysteresis = 0;
8546
8547 if (!rdev->ops->set_cqm_rssi_config)
8548 return -EOPNOTSUPP;
8549
8550 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8551 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8552 return -EOPNOTSUPP;
8553
8554 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8555 }
8556
8557 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8558 {
8559 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8560 struct nlattr *cqm;
8561 int err;
8562
8563 cqm = info->attrs[NL80211_ATTR_CQM];
8564 if (!cqm)
8565 return -EINVAL;
8566
8567 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8568 nl80211_attr_cqm_policy);
8569 if (err)
8570 return err;
8571
8572 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8573 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8574 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8575 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8576
8577 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8578 }
8579
8580 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8581 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8582 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8583 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8584 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8585 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8586
8587 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8588 }
8589
8590 return -EINVAL;
8591 }
8592
8593 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8594 {
8595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8596 struct net_device *dev = info->user_ptr[1];
8597 struct ocb_setup setup = {};
8598 int err;
8599
8600 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8601 if (err)
8602 return err;
8603
8604 return cfg80211_join_ocb(rdev, dev, &setup);
8605 }
8606
8607 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8608 {
8609 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8610 struct net_device *dev = info->user_ptr[1];
8611
8612 return cfg80211_leave_ocb(rdev, dev);
8613 }
8614
8615 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8616 {
8617 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8618 struct net_device *dev = info->user_ptr[1];
8619 struct mesh_config cfg;
8620 struct mesh_setup setup;
8621 int err;
8622
8623 /* start with default */
8624 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8625 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8626
8627 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8628 /* and parse parameters if given */
8629 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8630 if (err)
8631 return err;
8632 }
8633
8634 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8635 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8636 return -EINVAL;
8637
8638 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8639 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8640
8641 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8642 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8643 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8644 return -EINVAL;
8645
8646 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8647 setup.beacon_interval =
8648 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8649 if (setup.beacon_interval < 10 ||
8650 setup.beacon_interval > 10000)
8651 return -EINVAL;
8652 }
8653
8654 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8655 setup.dtim_period =
8656 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8657 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8658 return -EINVAL;
8659 }
8660
8661 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8662 /* parse additional setup parameters if given */
8663 err = nl80211_parse_mesh_setup(info, &setup);
8664 if (err)
8665 return err;
8666 }
8667
8668 if (setup.user_mpm)
8669 cfg.auto_open_plinks = false;
8670
8671 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8672 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8673 if (err)
8674 return err;
8675 } else {
8676 /* cfg80211_join_mesh() will sort it out */
8677 setup.chandef.chan = NULL;
8678 }
8679
8680 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8681 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8682 int n_rates =
8683 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8684 struct ieee80211_supported_band *sband;
8685
8686 if (!setup.chandef.chan)
8687 return -EINVAL;
8688
8689 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8690
8691 err = ieee80211_get_ratemask(sband, rates, n_rates,
8692 &setup.basic_rates);
8693 if (err)
8694 return err;
8695 }
8696
8697 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8698 }
8699
8700 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8701 {
8702 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8703 struct net_device *dev = info->user_ptr[1];
8704
8705 return cfg80211_leave_mesh(rdev, dev);
8706 }
8707
8708 #ifdef CONFIG_PM
8709 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8710 struct cfg80211_registered_device *rdev)
8711 {
8712 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8713 struct nlattr *nl_pats, *nl_pat;
8714 int i, pat_len;
8715
8716 if (!wowlan->n_patterns)
8717 return 0;
8718
8719 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8720 if (!nl_pats)
8721 return -ENOBUFS;
8722
8723 for (i = 0; i < wowlan->n_patterns; i++) {
8724 nl_pat = nla_nest_start(msg, i + 1);
8725 if (!nl_pat)
8726 return -ENOBUFS;
8727 pat_len = wowlan->patterns[i].pattern_len;
8728 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8729 wowlan->patterns[i].mask) ||
8730 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8731 wowlan->patterns[i].pattern) ||
8732 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8733 wowlan->patterns[i].pkt_offset))
8734 return -ENOBUFS;
8735 nla_nest_end(msg, nl_pat);
8736 }
8737 nla_nest_end(msg, nl_pats);
8738
8739 return 0;
8740 }
8741
8742 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8743 struct cfg80211_wowlan_tcp *tcp)
8744 {
8745 struct nlattr *nl_tcp;
8746
8747 if (!tcp)
8748 return 0;
8749
8750 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8751 if (!nl_tcp)
8752 return -ENOBUFS;
8753
8754 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8755 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8756 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8757 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8758 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8759 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8760 tcp->payload_len, tcp->payload) ||
8761 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8762 tcp->data_interval) ||
8763 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8764 tcp->wake_len, tcp->wake_data) ||
8765 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8766 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8767 return -ENOBUFS;
8768
8769 if (tcp->payload_seq.len &&
8770 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8771 sizeof(tcp->payload_seq), &tcp->payload_seq))
8772 return -ENOBUFS;
8773
8774 if (tcp->payload_tok.len &&
8775 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8776 sizeof(tcp->payload_tok) + tcp->tokens_size,
8777 &tcp->payload_tok))
8778 return -ENOBUFS;
8779
8780 nla_nest_end(msg, nl_tcp);
8781
8782 return 0;
8783 }
8784
8785 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8786 struct cfg80211_sched_scan_request *req)
8787 {
8788 struct nlattr *nd, *freqs, *matches, *match;
8789 int i;
8790
8791 if (!req)
8792 return 0;
8793
8794 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8795 if (!nd)
8796 return -ENOBUFS;
8797
8798 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8799 return -ENOBUFS;
8800
8801 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8802 if (!freqs)
8803 return -ENOBUFS;
8804
8805 for (i = 0; i < req->n_channels; i++)
8806 nla_put_u32(msg, i, req->channels[i]->center_freq);
8807
8808 nla_nest_end(msg, freqs);
8809
8810 if (req->n_match_sets) {
8811 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8812 for (i = 0; i < req->n_match_sets; i++) {
8813 match = nla_nest_start(msg, i);
8814 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8815 req->match_sets[i].ssid.ssid_len,
8816 req->match_sets[i].ssid.ssid);
8817 nla_nest_end(msg, match);
8818 }
8819 nla_nest_end(msg, matches);
8820 }
8821
8822 nla_nest_end(msg, nd);
8823
8824 return 0;
8825 }
8826
8827 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8828 {
8829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8830 struct sk_buff *msg;
8831 void *hdr;
8832 u32 size = NLMSG_DEFAULT_SIZE;
8833
8834 if (!rdev->wiphy.wowlan)
8835 return -EOPNOTSUPP;
8836
8837 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8838 /* adjust size to have room for all the data */
8839 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8840 rdev->wiphy.wowlan_config->tcp->payload_len +
8841 rdev->wiphy.wowlan_config->tcp->wake_len +
8842 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8843 }
8844
8845 msg = nlmsg_new(size, GFP_KERNEL);
8846 if (!msg)
8847 return -ENOMEM;
8848
8849 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8850 NL80211_CMD_GET_WOWLAN);
8851 if (!hdr)
8852 goto nla_put_failure;
8853
8854 if (rdev->wiphy.wowlan_config) {
8855 struct nlattr *nl_wowlan;
8856
8857 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8858 if (!nl_wowlan)
8859 goto nla_put_failure;
8860
8861 if ((rdev->wiphy.wowlan_config->any &&
8862 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8863 (rdev->wiphy.wowlan_config->disconnect &&
8864 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8865 (rdev->wiphy.wowlan_config->magic_pkt &&
8866 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8867 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8868 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8869 (rdev->wiphy.wowlan_config->eap_identity_req &&
8870 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8871 (rdev->wiphy.wowlan_config->four_way_handshake &&
8872 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8873 (rdev->wiphy.wowlan_config->rfkill_release &&
8874 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8875 goto nla_put_failure;
8876
8877 if (nl80211_send_wowlan_patterns(msg, rdev))
8878 goto nla_put_failure;
8879
8880 if (nl80211_send_wowlan_tcp(msg,
8881 rdev->wiphy.wowlan_config->tcp))
8882 goto nla_put_failure;
8883
8884 if (nl80211_send_wowlan_nd(
8885 msg,
8886 rdev->wiphy.wowlan_config->nd_config))
8887 goto nla_put_failure;
8888
8889 nla_nest_end(msg, nl_wowlan);
8890 }
8891
8892 genlmsg_end(msg, hdr);
8893 return genlmsg_reply(msg, info);
8894
8895 nla_put_failure:
8896 nlmsg_free(msg);
8897 return -ENOBUFS;
8898 }
8899
8900 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8901 struct nlattr *attr,
8902 struct cfg80211_wowlan *trig)
8903 {
8904 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8905 struct cfg80211_wowlan_tcp *cfg;
8906 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8907 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8908 u32 size;
8909 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8910 int err, port;
8911
8912 if (!rdev->wiphy.wowlan->tcp)
8913 return -EINVAL;
8914
8915 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8916 nla_data(attr), nla_len(attr),
8917 nl80211_wowlan_tcp_policy);
8918 if (err)
8919 return err;
8920
8921 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8922 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8923 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8924 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8925 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8926 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8927 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8928 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8929 return -EINVAL;
8930
8931 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8932 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8933 return -EINVAL;
8934
8935 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8936 rdev->wiphy.wowlan->tcp->data_interval_max ||
8937 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8938 return -EINVAL;
8939
8940 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8941 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8942 return -EINVAL;
8943
8944 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8945 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8946 return -EINVAL;
8947
8948 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8949 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8950
8951 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8952 tokens_size = tokln - sizeof(*tok);
8953
8954 if (!tok->len || tokens_size % tok->len)
8955 return -EINVAL;
8956 if (!rdev->wiphy.wowlan->tcp->tok)
8957 return -EINVAL;
8958 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8959 return -EINVAL;
8960 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8961 return -EINVAL;
8962 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8963 return -EINVAL;
8964 if (tok->offset + tok->len > data_size)
8965 return -EINVAL;
8966 }
8967
8968 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8969 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8970 if (!rdev->wiphy.wowlan->tcp->seq)
8971 return -EINVAL;
8972 if (seq->len == 0 || seq->len > 4)
8973 return -EINVAL;
8974 if (seq->len + seq->offset > data_size)
8975 return -EINVAL;
8976 }
8977
8978 size = sizeof(*cfg);
8979 size += data_size;
8980 size += wake_size + wake_mask_size;
8981 size += tokens_size;
8982
8983 cfg = kzalloc(size, GFP_KERNEL);
8984 if (!cfg)
8985 return -ENOMEM;
8986 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8987 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8988 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8989 ETH_ALEN);
8990 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8991 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8992 else
8993 port = 0;
8994 #ifdef CONFIG_INET
8995 /* allocate a socket and port for it and use it */
8996 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8997 IPPROTO_TCP, &cfg->sock, 1);
8998 if (err) {
8999 kfree(cfg);
9000 return err;
9001 }
9002 if (inet_csk_get_port(cfg->sock->sk, port)) {
9003 sock_release(cfg->sock);
9004 kfree(cfg);
9005 return -EADDRINUSE;
9006 }
9007 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9008 #else
9009 if (!port) {
9010 kfree(cfg);
9011 return -EINVAL;
9012 }
9013 cfg->src_port = port;
9014 #endif
9015
9016 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9017 cfg->payload_len = data_size;
9018 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9019 memcpy((void *)cfg->payload,
9020 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9021 data_size);
9022 if (seq)
9023 cfg->payload_seq = *seq;
9024 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9025 cfg->wake_len = wake_size;
9026 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9027 memcpy((void *)cfg->wake_data,
9028 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9029 wake_size);
9030 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9031 data_size + wake_size;
9032 memcpy((void *)cfg->wake_mask,
9033 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9034 wake_mask_size);
9035 if (tok) {
9036 cfg->tokens_size = tokens_size;
9037 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9038 }
9039
9040 trig->tcp = cfg;
9041
9042 return 0;
9043 }
9044
9045 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9046 const struct wiphy_wowlan_support *wowlan,
9047 struct nlattr *attr,
9048 struct cfg80211_wowlan *trig)
9049 {
9050 struct nlattr **tb;
9051 int err;
9052
9053 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9054 if (!tb)
9055 return -ENOMEM;
9056
9057 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9058 err = -EOPNOTSUPP;
9059 goto out;
9060 }
9061
9062 err = nla_parse(tb, NL80211_ATTR_MAX,
9063 nla_data(attr), nla_len(attr),
9064 nl80211_policy);
9065 if (err)
9066 goto out;
9067
9068 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9069 err = PTR_ERR_OR_ZERO(trig->nd_config);
9070 if (err)
9071 trig->nd_config = NULL;
9072
9073 out:
9074 kfree(tb);
9075 return err;
9076 }
9077
9078 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9079 {
9080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9081 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9082 struct cfg80211_wowlan new_triggers = {};
9083 struct cfg80211_wowlan *ntrig;
9084 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9085 int err, i;
9086 bool prev_enabled = rdev->wiphy.wowlan_config;
9087
9088 if (!wowlan)
9089 return -EOPNOTSUPP;
9090
9091 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9092 cfg80211_rdev_free_wowlan(rdev);
9093 rdev->wiphy.wowlan_config = NULL;
9094 goto set_wakeup;
9095 }
9096
9097 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9098 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9099 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9100 nl80211_wowlan_policy);
9101 if (err)
9102 return err;
9103
9104 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9105 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9106 return -EINVAL;
9107 new_triggers.any = true;
9108 }
9109
9110 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9111 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9112 return -EINVAL;
9113 new_triggers.disconnect = true;
9114 }
9115
9116 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9117 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9118 return -EINVAL;
9119 new_triggers.magic_pkt = true;
9120 }
9121
9122 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9123 return -EINVAL;
9124
9125 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9126 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9127 return -EINVAL;
9128 new_triggers.gtk_rekey_failure = true;
9129 }
9130
9131 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9132 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9133 return -EINVAL;
9134 new_triggers.eap_identity_req = true;
9135 }
9136
9137 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9138 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9139 return -EINVAL;
9140 new_triggers.four_way_handshake = true;
9141 }
9142
9143 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9144 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9145 return -EINVAL;
9146 new_triggers.rfkill_release = true;
9147 }
9148
9149 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9150 struct nlattr *pat;
9151 int n_patterns = 0;
9152 int rem, pat_len, mask_len, pkt_offset;
9153 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9154
9155 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9156 rem)
9157 n_patterns++;
9158 if (n_patterns > wowlan->n_patterns)
9159 return -EINVAL;
9160
9161 new_triggers.patterns = kcalloc(n_patterns,
9162 sizeof(new_triggers.patterns[0]),
9163 GFP_KERNEL);
9164 if (!new_triggers.patterns)
9165 return -ENOMEM;
9166
9167 new_triggers.n_patterns = n_patterns;
9168 i = 0;
9169
9170 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9171 rem) {
9172 u8 *mask_pat;
9173
9174 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9175 nla_len(pat), NULL);
9176 err = -EINVAL;
9177 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9178 !pat_tb[NL80211_PKTPAT_PATTERN])
9179 goto error;
9180 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9181 mask_len = DIV_ROUND_UP(pat_len, 8);
9182 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9183 goto error;
9184 if (pat_len > wowlan->pattern_max_len ||
9185 pat_len < wowlan->pattern_min_len)
9186 goto error;
9187
9188 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9189 pkt_offset = 0;
9190 else
9191 pkt_offset = nla_get_u32(
9192 pat_tb[NL80211_PKTPAT_OFFSET]);
9193 if (pkt_offset > wowlan->max_pkt_offset)
9194 goto error;
9195 new_triggers.patterns[i].pkt_offset = pkt_offset;
9196
9197 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9198 if (!mask_pat) {
9199 err = -ENOMEM;
9200 goto error;
9201 }
9202 new_triggers.patterns[i].mask = mask_pat;
9203 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9204 mask_len);
9205 mask_pat += mask_len;
9206 new_triggers.patterns[i].pattern = mask_pat;
9207 new_triggers.patterns[i].pattern_len = pat_len;
9208 memcpy(mask_pat,
9209 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9210 pat_len);
9211 i++;
9212 }
9213 }
9214
9215 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9216 err = nl80211_parse_wowlan_tcp(
9217 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9218 &new_triggers);
9219 if (err)
9220 goto error;
9221 }
9222
9223 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9224 err = nl80211_parse_wowlan_nd(
9225 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9226 &new_triggers);
9227 if (err)
9228 goto error;
9229 }
9230
9231 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9232 if (!ntrig) {
9233 err = -ENOMEM;
9234 goto error;
9235 }
9236 cfg80211_rdev_free_wowlan(rdev);
9237 rdev->wiphy.wowlan_config = ntrig;
9238
9239 set_wakeup:
9240 if (rdev->ops->set_wakeup &&
9241 prev_enabled != !!rdev->wiphy.wowlan_config)
9242 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9243
9244 return 0;
9245 error:
9246 for (i = 0; i < new_triggers.n_patterns; i++)
9247 kfree(new_triggers.patterns[i].mask);
9248 kfree(new_triggers.patterns);
9249 if (new_triggers.tcp && new_triggers.tcp->sock)
9250 sock_release(new_triggers.tcp->sock);
9251 kfree(new_triggers.tcp);
9252 return err;
9253 }
9254 #endif
9255
9256 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9257 struct cfg80211_registered_device *rdev)
9258 {
9259 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9260 int i, j, pat_len;
9261 struct cfg80211_coalesce_rules *rule;
9262
9263 if (!rdev->coalesce->n_rules)
9264 return 0;
9265
9266 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9267 if (!nl_rules)
9268 return -ENOBUFS;
9269
9270 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9271 nl_rule = nla_nest_start(msg, i + 1);
9272 if (!nl_rule)
9273 return -ENOBUFS;
9274
9275 rule = &rdev->coalesce->rules[i];
9276 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9277 rule->delay))
9278 return -ENOBUFS;
9279
9280 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9281 rule->condition))
9282 return -ENOBUFS;
9283
9284 nl_pats = nla_nest_start(msg,
9285 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9286 if (!nl_pats)
9287 return -ENOBUFS;
9288
9289 for (j = 0; j < rule->n_patterns; j++) {
9290 nl_pat = nla_nest_start(msg, j + 1);
9291 if (!nl_pat)
9292 return -ENOBUFS;
9293 pat_len = rule->patterns[j].pattern_len;
9294 if (nla_put(msg, NL80211_PKTPAT_MASK,
9295 DIV_ROUND_UP(pat_len, 8),
9296 rule->patterns[j].mask) ||
9297 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9298 rule->patterns[j].pattern) ||
9299 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9300 rule->patterns[j].pkt_offset))
9301 return -ENOBUFS;
9302 nla_nest_end(msg, nl_pat);
9303 }
9304 nla_nest_end(msg, nl_pats);
9305 nla_nest_end(msg, nl_rule);
9306 }
9307 nla_nest_end(msg, nl_rules);
9308
9309 return 0;
9310 }
9311
9312 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9313 {
9314 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9315 struct sk_buff *msg;
9316 void *hdr;
9317
9318 if (!rdev->wiphy.coalesce)
9319 return -EOPNOTSUPP;
9320
9321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9322 if (!msg)
9323 return -ENOMEM;
9324
9325 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9326 NL80211_CMD_GET_COALESCE);
9327 if (!hdr)
9328 goto nla_put_failure;
9329
9330 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9331 goto nla_put_failure;
9332
9333 genlmsg_end(msg, hdr);
9334 return genlmsg_reply(msg, info);
9335
9336 nla_put_failure:
9337 nlmsg_free(msg);
9338 return -ENOBUFS;
9339 }
9340
9341 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9342 {
9343 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9344 int i, j;
9345 struct cfg80211_coalesce_rules *rule;
9346
9347 if (!coalesce)
9348 return;
9349
9350 for (i = 0; i < coalesce->n_rules; i++) {
9351 rule = &coalesce->rules[i];
9352 for (j = 0; j < rule->n_patterns; j++)
9353 kfree(rule->patterns[j].mask);
9354 kfree(rule->patterns);
9355 }
9356 kfree(coalesce->rules);
9357 kfree(coalesce);
9358 rdev->coalesce = NULL;
9359 }
9360
9361 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9362 struct nlattr *rule,
9363 struct cfg80211_coalesce_rules *new_rule)
9364 {
9365 int err, i;
9366 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9367 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9368 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9369 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9370
9371 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9372 nla_len(rule), nl80211_coalesce_policy);
9373 if (err)
9374 return err;
9375
9376 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9377 new_rule->delay =
9378 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9379 if (new_rule->delay > coalesce->max_delay)
9380 return -EINVAL;
9381
9382 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9383 new_rule->condition =
9384 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9385 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9386 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9387 return -EINVAL;
9388
9389 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9390 return -EINVAL;
9391
9392 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9393 rem)
9394 n_patterns++;
9395 if (n_patterns > coalesce->n_patterns)
9396 return -EINVAL;
9397
9398 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9399 GFP_KERNEL);
9400 if (!new_rule->patterns)
9401 return -ENOMEM;
9402
9403 new_rule->n_patterns = n_patterns;
9404 i = 0;
9405
9406 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9407 rem) {
9408 u8 *mask_pat;
9409
9410 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9411 nla_len(pat), NULL);
9412 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9413 !pat_tb[NL80211_PKTPAT_PATTERN])
9414 return -EINVAL;
9415 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9416 mask_len = DIV_ROUND_UP(pat_len, 8);
9417 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9418 return -EINVAL;
9419 if (pat_len > coalesce->pattern_max_len ||
9420 pat_len < coalesce->pattern_min_len)
9421 return -EINVAL;
9422
9423 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9424 pkt_offset = 0;
9425 else
9426 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9427 if (pkt_offset > coalesce->max_pkt_offset)
9428 return -EINVAL;
9429 new_rule->patterns[i].pkt_offset = pkt_offset;
9430
9431 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9432 if (!mask_pat)
9433 return -ENOMEM;
9434
9435 new_rule->patterns[i].mask = mask_pat;
9436 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9437 mask_len);
9438
9439 mask_pat += mask_len;
9440 new_rule->patterns[i].pattern = mask_pat;
9441 new_rule->patterns[i].pattern_len = pat_len;
9442 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9443 pat_len);
9444 i++;
9445 }
9446
9447 return 0;
9448 }
9449
9450 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9451 {
9452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9453 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9454 struct cfg80211_coalesce new_coalesce = {};
9455 struct cfg80211_coalesce *n_coalesce;
9456 int err, rem_rule, n_rules = 0, i, j;
9457 struct nlattr *rule;
9458 struct cfg80211_coalesce_rules *tmp_rule;
9459
9460 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9461 return -EOPNOTSUPP;
9462
9463 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9464 cfg80211_rdev_free_coalesce(rdev);
9465 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9466 return 0;
9467 }
9468
9469 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9470 rem_rule)
9471 n_rules++;
9472 if (n_rules > coalesce->n_rules)
9473 return -EINVAL;
9474
9475 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9476 GFP_KERNEL);
9477 if (!new_coalesce.rules)
9478 return -ENOMEM;
9479
9480 new_coalesce.n_rules = n_rules;
9481 i = 0;
9482
9483 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9484 rem_rule) {
9485 err = nl80211_parse_coalesce_rule(rdev, rule,
9486 &new_coalesce.rules[i]);
9487 if (err)
9488 goto error;
9489
9490 i++;
9491 }
9492
9493 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9494 if (err)
9495 goto error;
9496
9497 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9498 if (!n_coalesce) {
9499 err = -ENOMEM;
9500 goto error;
9501 }
9502 cfg80211_rdev_free_coalesce(rdev);
9503 rdev->coalesce = n_coalesce;
9504
9505 return 0;
9506 error:
9507 for (i = 0; i < new_coalesce.n_rules; i++) {
9508 tmp_rule = &new_coalesce.rules[i];
9509 for (j = 0; j < tmp_rule->n_patterns; j++)
9510 kfree(tmp_rule->patterns[j].mask);
9511 kfree(tmp_rule->patterns);
9512 }
9513 kfree(new_coalesce.rules);
9514
9515 return err;
9516 }
9517
9518 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9519 {
9520 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9521 struct net_device *dev = info->user_ptr[1];
9522 struct wireless_dev *wdev = dev->ieee80211_ptr;
9523 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9524 struct cfg80211_gtk_rekey_data rekey_data;
9525 int err;
9526
9527 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9528 return -EINVAL;
9529
9530 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9531 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9532 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9533 nl80211_rekey_policy);
9534 if (err)
9535 return err;
9536
9537 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9538 return -ERANGE;
9539 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9540 return -ERANGE;
9541 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9542 return -ERANGE;
9543
9544 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9545 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9546 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9547
9548 wdev_lock(wdev);
9549 if (!wdev->current_bss) {
9550 err = -ENOTCONN;
9551 goto out;
9552 }
9553
9554 if (!rdev->ops->set_rekey_data) {
9555 err = -EOPNOTSUPP;
9556 goto out;
9557 }
9558
9559 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9560 out:
9561 wdev_unlock(wdev);
9562 return err;
9563 }
9564
9565 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9566 struct genl_info *info)
9567 {
9568 struct net_device *dev = info->user_ptr[1];
9569 struct wireless_dev *wdev = dev->ieee80211_ptr;
9570
9571 if (wdev->iftype != NL80211_IFTYPE_AP &&
9572 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9573 return -EINVAL;
9574
9575 if (wdev->ap_unexpected_nlportid)
9576 return -EBUSY;
9577
9578 wdev->ap_unexpected_nlportid = info->snd_portid;
9579 return 0;
9580 }
9581
9582 static int nl80211_probe_client(struct sk_buff *skb,
9583 struct genl_info *info)
9584 {
9585 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9586 struct net_device *dev = info->user_ptr[1];
9587 struct wireless_dev *wdev = dev->ieee80211_ptr;
9588 struct sk_buff *msg;
9589 void *hdr;
9590 const u8 *addr;
9591 u64 cookie;
9592 int err;
9593
9594 if (wdev->iftype != NL80211_IFTYPE_AP &&
9595 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9596 return -EOPNOTSUPP;
9597
9598 if (!info->attrs[NL80211_ATTR_MAC])
9599 return -EINVAL;
9600
9601 if (!rdev->ops->probe_client)
9602 return -EOPNOTSUPP;
9603
9604 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9605 if (!msg)
9606 return -ENOMEM;
9607
9608 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9609 NL80211_CMD_PROBE_CLIENT);
9610 if (!hdr) {
9611 err = -ENOBUFS;
9612 goto free_msg;
9613 }
9614
9615 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9616
9617 err = rdev_probe_client(rdev, dev, addr, &cookie);
9618 if (err)
9619 goto free_msg;
9620
9621 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9622 goto nla_put_failure;
9623
9624 genlmsg_end(msg, hdr);
9625
9626 return genlmsg_reply(msg, info);
9627
9628 nla_put_failure:
9629 err = -ENOBUFS;
9630 free_msg:
9631 nlmsg_free(msg);
9632 return err;
9633 }
9634
9635 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9636 {
9637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9638 struct cfg80211_beacon_registration *reg, *nreg;
9639 int rv;
9640
9641 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9642 return -EOPNOTSUPP;
9643
9644 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9645 if (!nreg)
9646 return -ENOMEM;
9647
9648 /* First, check if already registered. */
9649 spin_lock_bh(&rdev->beacon_registrations_lock);
9650 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9651 if (reg->nlportid == info->snd_portid) {
9652 rv = -EALREADY;
9653 goto out_err;
9654 }
9655 }
9656 /* Add it to the list */
9657 nreg->nlportid = info->snd_portid;
9658 list_add(&nreg->list, &rdev->beacon_registrations);
9659
9660 spin_unlock_bh(&rdev->beacon_registrations_lock);
9661
9662 return 0;
9663 out_err:
9664 spin_unlock_bh(&rdev->beacon_registrations_lock);
9665 kfree(nreg);
9666 return rv;
9667 }
9668
9669 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9670 {
9671 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9672 struct wireless_dev *wdev = info->user_ptr[1];
9673 int err;
9674
9675 if (!rdev->ops->start_p2p_device)
9676 return -EOPNOTSUPP;
9677
9678 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9679 return -EOPNOTSUPP;
9680
9681 if (wdev->p2p_started)
9682 return 0;
9683
9684 if (rfkill_blocked(rdev->rfkill))
9685 return -ERFKILL;
9686
9687 err = rdev_start_p2p_device(rdev, wdev);
9688 if (err)
9689 return err;
9690
9691 wdev->p2p_started = true;
9692 rdev->opencount++;
9693
9694 return 0;
9695 }
9696
9697 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9698 {
9699 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9700 struct wireless_dev *wdev = info->user_ptr[1];
9701
9702 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9703 return -EOPNOTSUPP;
9704
9705 if (!rdev->ops->stop_p2p_device)
9706 return -EOPNOTSUPP;
9707
9708 cfg80211_stop_p2p_device(rdev, wdev);
9709
9710 return 0;
9711 }
9712
9713 static int nl80211_get_protocol_features(struct sk_buff *skb,
9714 struct genl_info *info)
9715 {
9716 void *hdr;
9717 struct sk_buff *msg;
9718
9719 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9720 if (!msg)
9721 return -ENOMEM;
9722
9723 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9724 NL80211_CMD_GET_PROTOCOL_FEATURES);
9725 if (!hdr)
9726 goto nla_put_failure;
9727
9728 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9729 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9730 goto nla_put_failure;
9731
9732 genlmsg_end(msg, hdr);
9733 return genlmsg_reply(msg, info);
9734
9735 nla_put_failure:
9736 kfree_skb(msg);
9737 return -ENOBUFS;
9738 }
9739
9740 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9741 {
9742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9743 struct cfg80211_update_ft_ies_params ft_params;
9744 struct net_device *dev = info->user_ptr[1];
9745
9746 if (!rdev->ops->update_ft_ies)
9747 return -EOPNOTSUPP;
9748
9749 if (!info->attrs[NL80211_ATTR_MDID] ||
9750 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9751 return -EINVAL;
9752
9753 memset(&ft_params, 0, sizeof(ft_params));
9754 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9755 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9756 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9757
9758 return rdev_update_ft_ies(rdev, dev, &ft_params);
9759 }
9760
9761 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9762 struct genl_info *info)
9763 {
9764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9765 struct wireless_dev *wdev = info->user_ptr[1];
9766 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9767 u16 duration;
9768 int ret;
9769
9770 if (!rdev->ops->crit_proto_start)
9771 return -EOPNOTSUPP;
9772
9773 if (WARN_ON(!rdev->ops->crit_proto_stop))
9774 return -EINVAL;
9775
9776 if (rdev->crit_proto_nlportid)
9777 return -EBUSY;
9778
9779 /* determine protocol if provided */
9780 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9781 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9782
9783 if (proto >= NUM_NL80211_CRIT_PROTO)
9784 return -EINVAL;
9785
9786 /* timeout must be provided */
9787 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9788 return -EINVAL;
9789
9790 duration =
9791 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9792
9793 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9794 return -ERANGE;
9795
9796 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9797 if (!ret)
9798 rdev->crit_proto_nlportid = info->snd_portid;
9799
9800 return ret;
9801 }
9802
9803 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9804 struct genl_info *info)
9805 {
9806 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9807 struct wireless_dev *wdev = info->user_ptr[1];
9808
9809 if (!rdev->ops->crit_proto_stop)
9810 return -EOPNOTSUPP;
9811
9812 if (rdev->crit_proto_nlportid) {
9813 rdev->crit_proto_nlportid = 0;
9814 rdev_crit_proto_stop(rdev, wdev);
9815 }
9816 return 0;
9817 }
9818
9819 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9820 {
9821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9822 struct wireless_dev *wdev =
9823 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9824 int i, err;
9825 u32 vid, subcmd;
9826
9827 if (!rdev->wiphy.vendor_commands)
9828 return -EOPNOTSUPP;
9829
9830 if (IS_ERR(wdev)) {
9831 err = PTR_ERR(wdev);
9832 if (err != -EINVAL)
9833 return err;
9834 wdev = NULL;
9835 } else if (wdev->wiphy != &rdev->wiphy) {
9836 return -EINVAL;
9837 }
9838
9839 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9840 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9841 return -EINVAL;
9842
9843 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9844 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9845 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9846 const struct wiphy_vendor_command *vcmd;
9847 void *data = NULL;
9848 int len = 0;
9849
9850 vcmd = &rdev->wiphy.vendor_commands[i];
9851
9852 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9853 continue;
9854
9855 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9856 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9857 if (!wdev)
9858 return -EINVAL;
9859 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9860 !wdev->netdev)
9861 return -EINVAL;
9862
9863 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9864 if (wdev->netdev &&
9865 !netif_running(wdev->netdev))
9866 return -ENETDOWN;
9867 if (!wdev->netdev && !wdev->p2p_started)
9868 return -ENETDOWN;
9869 }
9870 } else {
9871 wdev = NULL;
9872 }
9873
9874 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9875 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9876 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9877 }
9878
9879 rdev->cur_cmd_info = info;
9880 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9881 data, len);
9882 rdev->cur_cmd_info = NULL;
9883 return err;
9884 }
9885
9886 return -EOPNOTSUPP;
9887 }
9888
9889 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9890 enum nl80211_commands cmd,
9891 enum nl80211_attrs attr,
9892 int approxlen)
9893 {
9894 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9895
9896 if (WARN_ON(!rdev->cur_cmd_info))
9897 return NULL;
9898
9899 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9900 rdev->cur_cmd_info->snd_portid,
9901 rdev->cur_cmd_info->snd_seq,
9902 cmd, attr, NULL, GFP_KERNEL);
9903 }
9904 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9905
9906 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9907 {
9908 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9909 void *hdr = ((void **)skb->cb)[1];
9910 struct nlattr *data = ((void **)skb->cb)[2];
9911
9912 /* clear CB data for netlink core to own from now on */
9913 memset(skb->cb, 0, sizeof(skb->cb));
9914
9915 if (WARN_ON(!rdev->cur_cmd_info)) {
9916 kfree_skb(skb);
9917 return -EINVAL;
9918 }
9919
9920 nla_nest_end(skb, data);
9921 genlmsg_end(skb, hdr);
9922 return genlmsg_reply(skb, rdev->cur_cmd_info);
9923 }
9924 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9925
9926
9927 static int nl80211_set_qos_map(struct sk_buff *skb,
9928 struct genl_info *info)
9929 {
9930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9931 struct cfg80211_qos_map *qos_map = NULL;
9932 struct net_device *dev = info->user_ptr[1];
9933 u8 *pos, len, num_des, des_len, des;
9934 int ret;
9935
9936 if (!rdev->ops->set_qos_map)
9937 return -EOPNOTSUPP;
9938
9939 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9940 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9941 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9942
9943 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9944 len > IEEE80211_QOS_MAP_LEN_MAX)
9945 return -EINVAL;
9946
9947 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9948 if (!qos_map)
9949 return -ENOMEM;
9950
9951 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9952 if (num_des) {
9953 des_len = num_des *
9954 sizeof(struct cfg80211_dscp_exception);
9955 memcpy(qos_map->dscp_exception, pos, des_len);
9956 qos_map->num_des = num_des;
9957 for (des = 0; des < num_des; des++) {
9958 if (qos_map->dscp_exception[des].up > 7) {
9959 kfree(qos_map);
9960 return -EINVAL;
9961 }
9962 }
9963 pos += des_len;
9964 }
9965 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9966 }
9967
9968 wdev_lock(dev->ieee80211_ptr);
9969 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9970 if (!ret)
9971 ret = rdev_set_qos_map(rdev, dev, qos_map);
9972 wdev_unlock(dev->ieee80211_ptr);
9973
9974 kfree(qos_map);
9975 return ret;
9976 }
9977
9978 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9979 {
9980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9981 struct net_device *dev = info->user_ptr[1];
9982 struct wireless_dev *wdev = dev->ieee80211_ptr;
9983 const u8 *peer;
9984 u8 tsid, up;
9985 u16 admitted_time = 0;
9986 int err;
9987
9988 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9989 return -EOPNOTSUPP;
9990
9991 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9992 !info->attrs[NL80211_ATTR_USER_PRIO])
9993 return -EINVAL;
9994
9995 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9996 if (tsid >= IEEE80211_NUM_TIDS)
9997 return -EINVAL;
9998
9999 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10000 if (up >= IEEE80211_NUM_UPS)
10001 return -EINVAL;
10002
10003 /* WMM uses TIDs 0-7 even for TSPEC */
10004 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10005 /* TODO: handle 802.11 TSPEC/admission control
10006 * need more attributes for that (e.g. BA session requirement);
10007 * change the WMM adminssion test above to allow both then
10008 */
10009 return -EINVAL;
10010 }
10011
10012 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10013
10014 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10015 admitted_time =
10016 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10017 if (!admitted_time)
10018 return -EINVAL;
10019 }
10020
10021 wdev_lock(wdev);
10022 switch (wdev->iftype) {
10023 case NL80211_IFTYPE_STATION:
10024 case NL80211_IFTYPE_P2P_CLIENT:
10025 if (wdev->current_bss)
10026 break;
10027 err = -ENOTCONN;
10028 goto out;
10029 default:
10030 err = -EOPNOTSUPP;
10031 goto out;
10032 }
10033
10034 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10035
10036 out:
10037 wdev_unlock(wdev);
10038 return err;
10039 }
10040
10041 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10042 {
10043 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10044 struct net_device *dev = info->user_ptr[1];
10045 struct wireless_dev *wdev = dev->ieee80211_ptr;
10046 const u8 *peer;
10047 u8 tsid;
10048 int err;
10049
10050 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10051 return -EINVAL;
10052
10053 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10054 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10055
10056 wdev_lock(wdev);
10057 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10058 wdev_unlock(wdev);
10059
10060 return err;
10061 }
10062
10063 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10064 struct genl_info *info)
10065 {
10066 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10067 struct net_device *dev = info->user_ptr[1];
10068 struct wireless_dev *wdev = dev->ieee80211_ptr;
10069 struct cfg80211_chan_def chandef = {};
10070 const u8 *addr;
10071 u8 oper_class;
10072 int err;
10073
10074 if (!rdev->ops->tdls_channel_switch ||
10075 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10076 return -EOPNOTSUPP;
10077
10078 switch (dev->ieee80211_ptr->iftype) {
10079 case NL80211_IFTYPE_STATION:
10080 case NL80211_IFTYPE_P2P_CLIENT:
10081 break;
10082 default:
10083 return -EOPNOTSUPP;
10084 }
10085
10086 if (!info->attrs[NL80211_ATTR_MAC] ||
10087 !info->attrs[NL80211_ATTR_OPER_CLASS])
10088 return -EINVAL;
10089
10090 err = nl80211_parse_chandef(rdev, info, &chandef);
10091 if (err)
10092 return err;
10093
10094 /*
10095 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10096 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10097 * specification is not defined for them.
10098 */
10099 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10100 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10101 chandef.width != NL80211_CHAN_WIDTH_20)
10102 return -EINVAL;
10103
10104 /* we will be active on the TDLS link */
10105 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10106 return -EINVAL;
10107
10108 /* don't allow switching to DFS channels */
10109 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10110 return -EINVAL;
10111
10112 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10113 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10114
10115 wdev_lock(wdev);
10116 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10117 wdev_unlock(wdev);
10118
10119 return err;
10120 }
10121
10122 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10123 struct genl_info *info)
10124 {
10125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10126 struct net_device *dev = info->user_ptr[1];
10127 struct wireless_dev *wdev = dev->ieee80211_ptr;
10128 const u8 *addr;
10129
10130 if (!rdev->ops->tdls_channel_switch ||
10131 !rdev->ops->tdls_cancel_channel_switch ||
10132 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10133 return -EOPNOTSUPP;
10134
10135 switch (dev->ieee80211_ptr->iftype) {
10136 case NL80211_IFTYPE_STATION:
10137 case NL80211_IFTYPE_P2P_CLIENT:
10138 break;
10139 default:
10140 return -EOPNOTSUPP;
10141 }
10142
10143 if (!info->attrs[NL80211_ATTR_MAC])
10144 return -EINVAL;
10145
10146 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10147
10148 wdev_lock(wdev);
10149 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10150 wdev_unlock(wdev);
10151
10152 return 0;
10153 }
10154
10155 #define NL80211_FLAG_NEED_WIPHY 0x01
10156 #define NL80211_FLAG_NEED_NETDEV 0x02
10157 #define NL80211_FLAG_NEED_RTNL 0x04
10158 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10159 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10160 NL80211_FLAG_CHECK_NETDEV_UP)
10161 #define NL80211_FLAG_NEED_WDEV 0x10
10162 /* If a netdev is associated, it must be UP, P2P must be started */
10163 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10164 NL80211_FLAG_CHECK_NETDEV_UP)
10165 #define NL80211_FLAG_CLEAR_SKB 0x20
10166
10167 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10168 struct genl_info *info)
10169 {
10170 struct cfg80211_registered_device *rdev;
10171 struct wireless_dev *wdev;
10172 struct net_device *dev;
10173 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10174
10175 if (rtnl)
10176 rtnl_lock();
10177
10178 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10179 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10180 if (IS_ERR(rdev)) {
10181 if (rtnl)
10182 rtnl_unlock();
10183 return PTR_ERR(rdev);
10184 }
10185 info->user_ptr[0] = rdev;
10186 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10187 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10188 ASSERT_RTNL();
10189
10190 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10191 info->attrs);
10192 if (IS_ERR(wdev)) {
10193 if (rtnl)
10194 rtnl_unlock();
10195 return PTR_ERR(wdev);
10196 }
10197
10198 dev = wdev->netdev;
10199 rdev = wiphy_to_rdev(wdev->wiphy);
10200
10201 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10202 if (!dev) {
10203 if (rtnl)
10204 rtnl_unlock();
10205 return -EINVAL;
10206 }
10207
10208 info->user_ptr[1] = dev;
10209 } else {
10210 info->user_ptr[1] = wdev;
10211 }
10212
10213 if (dev) {
10214 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10215 !netif_running(dev)) {
10216 if (rtnl)
10217 rtnl_unlock();
10218 return -ENETDOWN;
10219 }
10220
10221 dev_hold(dev);
10222 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10223 if (!wdev->p2p_started) {
10224 if (rtnl)
10225 rtnl_unlock();
10226 return -ENETDOWN;
10227 }
10228 }
10229
10230 info->user_ptr[0] = rdev;
10231 }
10232
10233 return 0;
10234 }
10235
10236 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10237 struct genl_info *info)
10238 {
10239 if (info->user_ptr[1]) {
10240 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10241 struct wireless_dev *wdev = info->user_ptr[1];
10242
10243 if (wdev->netdev)
10244 dev_put(wdev->netdev);
10245 } else {
10246 dev_put(info->user_ptr[1]);
10247 }
10248 }
10249
10250 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10251 rtnl_unlock();
10252
10253 /* If needed, clear the netlink message payload from the SKB
10254 * as it might contain key data that shouldn't stick around on
10255 * the heap after the SKB is freed. The netlink message header
10256 * is still needed for further processing, so leave it intact.
10257 */
10258 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10259 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10260
10261 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10262 }
10263 }
10264
10265 static const struct genl_ops nl80211_ops[] = {
10266 {
10267 .cmd = NL80211_CMD_GET_WIPHY,
10268 .doit = nl80211_get_wiphy,
10269 .dumpit = nl80211_dump_wiphy,
10270 .done = nl80211_dump_wiphy_done,
10271 .policy = nl80211_policy,
10272 /* can be retrieved by unprivileged users */
10273 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10274 NL80211_FLAG_NEED_RTNL,
10275 },
10276 {
10277 .cmd = NL80211_CMD_SET_WIPHY,
10278 .doit = nl80211_set_wiphy,
10279 .policy = nl80211_policy,
10280 .flags = GENL_ADMIN_PERM,
10281 .internal_flags = NL80211_FLAG_NEED_RTNL,
10282 },
10283 {
10284 .cmd = NL80211_CMD_GET_INTERFACE,
10285 .doit = nl80211_get_interface,
10286 .dumpit = nl80211_dump_interface,
10287 .policy = nl80211_policy,
10288 /* can be retrieved by unprivileged users */
10289 .internal_flags = NL80211_FLAG_NEED_WDEV |
10290 NL80211_FLAG_NEED_RTNL,
10291 },
10292 {
10293 .cmd = NL80211_CMD_SET_INTERFACE,
10294 .doit = nl80211_set_interface,
10295 .policy = nl80211_policy,
10296 .flags = GENL_ADMIN_PERM,
10297 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10298 NL80211_FLAG_NEED_RTNL,
10299 },
10300 {
10301 .cmd = NL80211_CMD_NEW_INTERFACE,
10302 .doit = nl80211_new_interface,
10303 .policy = nl80211_policy,
10304 .flags = GENL_ADMIN_PERM,
10305 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10306 NL80211_FLAG_NEED_RTNL,
10307 },
10308 {
10309 .cmd = NL80211_CMD_DEL_INTERFACE,
10310 .doit = nl80211_del_interface,
10311 .policy = nl80211_policy,
10312 .flags = GENL_ADMIN_PERM,
10313 .internal_flags = NL80211_FLAG_NEED_WDEV |
10314 NL80211_FLAG_NEED_RTNL,
10315 },
10316 {
10317 .cmd = NL80211_CMD_GET_KEY,
10318 .doit = nl80211_get_key,
10319 .policy = nl80211_policy,
10320 .flags = GENL_ADMIN_PERM,
10321 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10322 NL80211_FLAG_NEED_RTNL,
10323 },
10324 {
10325 .cmd = NL80211_CMD_SET_KEY,
10326 .doit = nl80211_set_key,
10327 .policy = nl80211_policy,
10328 .flags = GENL_ADMIN_PERM,
10329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10330 NL80211_FLAG_NEED_RTNL |
10331 NL80211_FLAG_CLEAR_SKB,
10332 },
10333 {
10334 .cmd = NL80211_CMD_NEW_KEY,
10335 .doit = nl80211_new_key,
10336 .policy = nl80211_policy,
10337 .flags = GENL_ADMIN_PERM,
10338 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10339 NL80211_FLAG_NEED_RTNL |
10340 NL80211_FLAG_CLEAR_SKB,
10341 },
10342 {
10343 .cmd = NL80211_CMD_DEL_KEY,
10344 .doit = nl80211_del_key,
10345 .policy = nl80211_policy,
10346 .flags = GENL_ADMIN_PERM,
10347 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10348 NL80211_FLAG_NEED_RTNL,
10349 },
10350 {
10351 .cmd = NL80211_CMD_SET_BEACON,
10352 .policy = nl80211_policy,
10353 .flags = GENL_ADMIN_PERM,
10354 .doit = nl80211_set_beacon,
10355 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10356 NL80211_FLAG_NEED_RTNL,
10357 },
10358 {
10359 .cmd = NL80211_CMD_START_AP,
10360 .policy = nl80211_policy,
10361 .flags = GENL_ADMIN_PERM,
10362 .doit = nl80211_start_ap,
10363 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10364 NL80211_FLAG_NEED_RTNL,
10365 },
10366 {
10367 .cmd = NL80211_CMD_STOP_AP,
10368 .policy = nl80211_policy,
10369 .flags = GENL_ADMIN_PERM,
10370 .doit = nl80211_stop_ap,
10371 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10372 NL80211_FLAG_NEED_RTNL,
10373 },
10374 {
10375 .cmd = NL80211_CMD_GET_STATION,
10376 .doit = nl80211_get_station,
10377 .dumpit = nl80211_dump_station,
10378 .policy = nl80211_policy,
10379 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10380 NL80211_FLAG_NEED_RTNL,
10381 },
10382 {
10383 .cmd = NL80211_CMD_SET_STATION,
10384 .doit = nl80211_set_station,
10385 .policy = nl80211_policy,
10386 .flags = GENL_ADMIN_PERM,
10387 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10388 NL80211_FLAG_NEED_RTNL,
10389 },
10390 {
10391 .cmd = NL80211_CMD_NEW_STATION,
10392 .doit = nl80211_new_station,
10393 .policy = nl80211_policy,
10394 .flags = GENL_ADMIN_PERM,
10395 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10396 NL80211_FLAG_NEED_RTNL,
10397 },
10398 {
10399 .cmd = NL80211_CMD_DEL_STATION,
10400 .doit = nl80211_del_station,
10401 .policy = nl80211_policy,
10402 .flags = GENL_ADMIN_PERM,
10403 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10404 NL80211_FLAG_NEED_RTNL,
10405 },
10406 {
10407 .cmd = NL80211_CMD_GET_MPATH,
10408 .doit = nl80211_get_mpath,
10409 .dumpit = nl80211_dump_mpath,
10410 .policy = nl80211_policy,
10411 .flags = GENL_ADMIN_PERM,
10412 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10413 NL80211_FLAG_NEED_RTNL,
10414 },
10415 {
10416 .cmd = NL80211_CMD_GET_MPP,
10417 .doit = nl80211_get_mpp,
10418 .dumpit = nl80211_dump_mpp,
10419 .policy = nl80211_policy,
10420 .flags = GENL_ADMIN_PERM,
10421 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10422 NL80211_FLAG_NEED_RTNL,
10423 },
10424 {
10425 .cmd = NL80211_CMD_SET_MPATH,
10426 .doit = nl80211_set_mpath,
10427 .policy = nl80211_policy,
10428 .flags = GENL_ADMIN_PERM,
10429 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10430 NL80211_FLAG_NEED_RTNL,
10431 },
10432 {
10433 .cmd = NL80211_CMD_NEW_MPATH,
10434 .doit = nl80211_new_mpath,
10435 .policy = nl80211_policy,
10436 .flags = GENL_ADMIN_PERM,
10437 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10438 NL80211_FLAG_NEED_RTNL,
10439 },
10440 {
10441 .cmd = NL80211_CMD_DEL_MPATH,
10442 .doit = nl80211_del_mpath,
10443 .policy = nl80211_policy,
10444 .flags = GENL_ADMIN_PERM,
10445 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10446 NL80211_FLAG_NEED_RTNL,
10447 },
10448 {
10449 .cmd = NL80211_CMD_SET_BSS,
10450 .doit = nl80211_set_bss,
10451 .policy = nl80211_policy,
10452 .flags = GENL_ADMIN_PERM,
10453 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10454 NL80211_FLAG_NEED_RTNL,
10455 },
10456 {
10457 .cmd = NL80211_CMD_GET_REG,
10458 .doit = nl80211_get_reg_do,
10459 .dumpit = nl80211_get_reg_dump,
10460 .policy = nl80211_policy,
10461 .internal_flags = NL80211_FLAG_NEED_RTNL,
10462 /* can be retrieved by unprivileged users */
10463 },
10464 {
10465 .cmd = NL80211_CMD_SET_REG,
10466 .doit = nl80211_set_reg,
10467 .policy = nl80211_policy,
10468 .flags = GENL_ADMIN_PERM,
10469 .internal_flags = NL80211_FLAG_NEED_RTNL,
10470 },
10471 {
10472 .cmd = NL80211_CMD_REQ_SET_REG,
10473 .doit = nl80211_req_set_reg,
10474 .policy = nl80211_policy,
10475 .flags = GENL_ADMIN_PERM,
10476 },
10477 {
10478 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10479 .doit = nl80211_get_mesh_config,
10480 .policy = nl80211_policy,
10481 /* can be retrieved by unprivileged users */
10482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10483 NL80211_FLAG_NEED_RTNL,
10484 },
10485 {
10486 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10487 .doit = nl80211_update_mesh_config,
10488 .policy = nl80211_policy,
10489 .flags = GENL_ADMIN_PERM,
10490 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10491 NL80211_FLAG_NEED_RTNL,
10492 },
10493 {
10494 .cmd = NL80211_CMD_TRIGGER_SCAN,
10495 .doit = nl80211_trigger_scan,
10496 .policy = nl80211_policy,
10497 .flags = GENL_ADMIN_PERM,
10498 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10499 NL80211_FLAG_NEED_RTNL,
10500 },
10501 {
10502 .cmd = NL80211_CMD_GET_SCAN,
10503 .policy = nl80211_policy,
10504 .dumpit = nl80211_dump_scan,
10505 },
10506 {
10507 .cmd = NL80211_CMD_START_SCHED_SCAN,
10508 .doit = nl80211_start_sched_scan,
10509 .policy = nl80211_policy,
10510 .flags = GENL_ADMIN_PERM,
10511 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10512 NL80211_FLAG_NEED_RTNL,
10513 },
10514 {
10515 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10516 .doit = nl80211_stop_sched_scan,
10517 .policy = nl80211_policy,
10518 .flags = GENL_ADMIN_PERM,
10519 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10520 NL80211_FLAG_NEED_RTNL,
10521 },
10522 {
10523 .cmd = NL80211_CMD_AUTHENTICATE,
10524 .doit = nl80211_authenticate,
10525 .policy = nl80211_policy,
10526 .flags = GENL_ADMIN_PERM,
10527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10528 NL80211_FLAG_NEED_RTNL |
10529 NL80211_FLAG_CLEAR_SKB,
10530 },
10531 {
10532 .cmd = NL80211_CMD_ASSOCIATE,
10533 .doit = nl80211_associate,
10534 .policy = nl80211_policy,
10535 .flags = GENL_ADMIN_PERM,
10536 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10537 NL80211_FLAG_NEED_RTNL,
10538 },
10539 {
10540 .cmd = NL80211_CMD_DEAUTHENTICATE,
10541 .doit = nl80211_deauthenticate,
10542 .policy = nl80211_policy,
10543 .flags = GENL_ADMIN_PERM,
10544 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10545 NL80211_FLAG_NEED_RTNL,
10546 },
10547 {
10548 .cmd = NL80211_CMD_DISASSOCIATE,
10549 .doit = nl80211_disassociate,
10550 .policy = nl80211_policy,
10551 .flags = GENL_ADMIN_PERM,
10552 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10553 NL80211_FLAG_NEED_RTNL,
10554 },
10555 {
10556 .cmd = NL80211_CMD_JOIN_IBSS,
10557 .doit = nl80211_join_ibss,
10558 .policy = nl80211_policy,
10559 .flags = GENL_ADMIN_PERM,
10560 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10561 NL80211_FLAG_NEED_RTNL,
10562 },
10563 {
10564 .cmd = NL80211_CMD_LEAVE_IBSS,
10565 .doit = nl80211_leave_ibss,
10566 .policy = nl80211_policy,
10567 .flags = GENL_ADMIN_PERM,
10568 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10569 NL80211_FLAG_NEED_RTNL,
10570 },
10571 #ifdef CONFIG_NL80211_TESTMODE
10572 {
10573 .cmd = NL80211_CMD_TESTMODE,
10574 .doit = nl80211_testmode_do,
10575 .dumpit = nl80211_testmode_dump,
10576 .policy = nl80211_policy,
10577 .flags = GENL_ADMIN_PERM,
10578 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10579 NL80211_FLAG_NEED_RTNL,
10580 },
10581 #endif
10582 {
10583 .cmd = NL80211_CMD_CONNECT,
10584 .doit = nl80211_connect,
10585 .policy = nl80211_policy,
10586 .flags = GENL_ADMIN_PERM,
10587 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10588 NL80211_FLAG_NEED_RTNL,
10589 },
10590 {
10591 .cmd = NL80211_CMD_DISCONNECT,
10592 .doit = nl80211_disconnect,
10593 .policy = nl80211_policy,
10594 .flags = GENL_ADMIN_PERM,
10595 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10596 NL80211_FLAG_NEED_RTNL,
10597 },
10598 {
10599 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10600 .doit = nl80211_wiphy_netns,
10601 .policy = nl80211_policy,
10602 .flags = GENL_ADMIN_PERM,
10603 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10604 NL80211_FLAG_NEED_RTNL,
10605 },
10606 {
10607 .cmd = NL80211_CMD_GET_SURVEY,
10608 .policy = nl80211_policy,
10609 .dumpit = nl80211_dump_survey,
10610 },
10611 {
10612 .cmd = NL80211_CMD_SET_PMKSA,
10613 .doit = nl80211_setdel_pmksa,
10614 .policy = nl80211_policy,
10615 .flags = GENL_ADMIN_PERM,
10616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10617 NL80211_FLAG_NEED_RTNL,
10618 },
10619 {
10620 .cmd = NL80211_CMD_DEL_PMKSA,
10621 .doit = nl80211_setdel_pmksa,
10622 .policy = nl80211_policy,
10623 .flags = GENL_ADMIN_PERM,
10624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10625 NL80211_FLAG_NEED_RTNL,
10626 },
10627 {
10628 .cmd = NL80211_CMD_FLUSH_PMKSA,
10629 .doit = nl80211_flush_pmksa,
10630 .policy = nl80211_policy,
10631 .flags = GENL_ADMIN_PERM,
10632 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10633 NL80211_FLAG_NEED_RTNL,
10634 },
10635 {
10636 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10637 .doit = nl80211_remain_on_channel,
10638 .policy = nl80211_policy,
10639 .flags = GENL_ADMIN_PERM,
10640 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10641 NL80211_FLAG_NEED_RTNL,
10642 },
10643 {
10644 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10645 .doit = nl80211_cancel_remain_on_channel,
10646 .policy = nl80211_policy,
10647 .flags = GENL_ADMIN_PERM,
10648 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10649 NL80211_FLAG_NEED_RTNL,
10650 },
10651 {
10652 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10653 .doit = nl80211_set_tx_bitrate_mask,
10654 .policy = nl80211_policy,
10655 .flags = GENL_ADMIN_PERM,
10656 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10657 NL80211_FLAG_NEED_RTNL,
10658 },
10659 {
10660 .cmd = NL80211_CMD_REGISTER_FRAME,
10661 .doit = nl80211_register_mgmt,
10662 .policy = nl80211_policy,
10663 .flags = GENL_ADMIN_PERM,
10664 .internal_flags = NL80211_FLAG_NEED_WDEV |
10665 NL80211_FLAG_NEED_RTNL,
10666 },
10667 {
10668 .cmd = NL80211_CMD_FRAME,
10669 .doit = nl80211_tx_mgmt,
10670 .policy = nl80211_policy,
10671 .flags = GENL_ADMIN_PERM,
10672 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10673 NL80211_FLAG_NEED_RTNL,
10674 },
10675 {
10676 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10677 .doit = nl80211_tx_mgmt_cancel_wait,
10678 .policy = nl80211_policy,
10679 .flags = GENL_ADMIN_PERM,
10680 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10681 NL80211_FLAG_NEED_RTNL,
10682 },
10683 {
10684 .cmd = NL80211_CMD_SET_POWER_SAVE,
10685 .doit = nl80211_set_power_save,
10686 .policy = nl80211_policy,
10687 .flags = GENL_ADMIN_PERM,
10688 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10689 NL80211_FLAG_NEED_RTNL,
10690 },
10691 {
10692 .cmd = NL80211_CMD_GET_POWER_SAVE,
10693 .doit = nl80211_get_power_save,
10694 .policy = nl80211_policy,
10695 /* can be retrieved by unprivileged users */
10696 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10697 NL80211_FLAG_NEED_RTNL,
10698 },
10699 {
10700 .cmd = NL80211_CMD_SET_CQM,
10701 .doit = nl80211_set_cqm,
10702 .policy = nl80211_policy,
10703 .flags = GENL_ADMIN_PERM,
10704 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10705 NL80211_FLAG_NEED_RTNL,
10706 },
10707 {
10708 .cmd = NL80211_CMD_SET_CHANNEL,
10709 .doit = nl80211_set_channel,
10710 .policy = nl80211_policy,
10711 .flags = GENL_ADMIN_PERM,
10712 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10713 NL80211_FLAG_NEED_RTNL,
10714 },
10715 {
10716 .cmd = NL80211_CMD_SET_WDS_PEER,
10717 .doit = nl80211_set_wds_peer,
10718 .policy = nl80211_policy,
10719 .flags = GENL_ADMIN_PERM,
10720 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10721 NL80211_FLAG_NEED_RTNL,
10722 },
10723 {
10724 .cmd = NL80211_CMD_JOIN_MESH,
10725 .doit = nl80211_join_mesh,
10726 .policy = nl80211_policy,
10727 .flags = GENL_ADMIN_PERM,
10728 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10729 NL80211_FLAG_NEED_RTNL,
10730 },
10731 {
10732 .cmd = NL80211_CMD_LEAVE_MESH,
10733 .doit = nl80211_leave_mesh,
10734 .policy = nl80211_policy,
10735 .flags = GENL_ADMIN_PERM,
10736 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10737 NL80211_FLAG_NEED_RTNL,
10738 },
10739 {
10740 .cmd = NL80211_CMD_JOIN_OCB,
10741 .doit = nl80211_join_ocb,
10742 .policy = nl80211_policy,
10743 .flags = GENL_ADMIN_PERM,
10744 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10745 NL80211_FLAG_NEED_RTNL,
10746 },
10747 {
10748 .cmd = NL80211_CMD_LEAVE_OCB,
10749 .doit = nl80211_leave_ocb,
10750 .policy = nl80211_policy,
10751 .flags = GENL_ADMIN_PERM,
10752 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10753 NL80211_FLAG_NEED_RTNL,
10754 },
10755 #ifdef CONFIG_PM
10756 {
10757 .cmd = NL80211_CMD_GET_WOWLAN,
10758 .doit = nl80211_get_wowlan,
10759 .policy = nl80211_policy,
10760 /* can be retrieved by unprivileged users */
10761 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10762 NL80211_FLAG_NEED_RTNL,
10763 },
10764 {
10765 .cmd = NL80211_CMD_SET_WOWLAN,
10766 .doit = nl80211_set_wowlan,
10767 .policy = nl80211_policy,
10768 .flags = GENL_ADMIN_PERM,
10769 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10770 NL80211_FLAG_NEED_RTNL,
10771 },
10772 #endif
10773 {
10774 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10775 .doit = nl80211_set_rekey_data,
10776 .policy = nl80211_policy,
10777 .flags = GENL_ADMIN_PERM,
10778 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10779 NL80211_FLAG_NEED_RTNL |
10780 NL80211_FLAG_CLEAR_SKB,
10781 },
10782 {
10783 .cmd = NL80211_CMD_TDLS_MGMT,
10784 .doit = nl80211_tdls_mgmt,
10785 .policy = nl80211_policy,
10786 .flags = GENL_ADMIN_PERM,
10787 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10788 NL80211_FLAG_NEED_RTNL,
10789 },
10790 {
10791 .cmd = NL80211_CMD_TDLS_OPER,
10792 .doit = nl80211_tdls_oper,
10793 .policy = nl80211_policy,
10794 .flags = GENL_ADMIN_PERM,
10795 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10796 NL80211_FLAG_NEED_RTNL,
10797 },
10798 {
10799 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10800 .doit = nl80211_register_unexpected_frame,
10801 .policy = nl80211_policy,
10802 .flags = GENL_ADMIN_PERM,
10803 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10804 NL80211_FLAG_NEED_RTNL,
10805 },
10806 {
10807 .cmd = NL80211_CMD_PROBE_CLIENT,
10808 .doit = nl80211_probe_client,
10809 .policy = nl80211_policy,
10810 .flags = GENL_ADMIN_PERM,
10811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10812 NL80211_FLAG_NEED_RTNL,
10813 },
10814 {
10815 .cmd = NL80211_CMD_REGISTER_BEACONS,
10816 .doit = nl80211_register_beacons,
10817 .policy = nl80211_policy,
10818 .flags = GENL_ADMIN_PERM,
10819 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10820 NL80211_FLAG_NEED_RTNL,
10821 },
10822 {
10823 .cmd = NL80211_CMD_SET_NOACK_MAP,
10824 .doit = nl80211_set_noack_map,
10825 .policy = nl80211_policy,
10826 .flags = GENL_ADMIN_PERM,
10827 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10828 NL80211_FLAG_NEED_RTNL,
10829 },
10830 {
10831 .cmd = NL80211_CMD_START_P2P_DEVICE,
10832 .doit = nl80211_start_p2p_device,
10833 .policy = nl80211_policy,
10834 .flags = GENL_ADMIN_PERM,
10835 .internal_flags = NL80211_FLAG_NEED_WDEV |
10836 NL80211_FLAG_NEED_RTNL,
10837 },
10838 {
10839 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10840 .doit = nl80211_stop_p2p_device,
10841 .policy = nl80211_policy,
10842 .flags = GENL_ADMIN_PERM,
10843 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10844 NL80211_FLAG_NEED_RTNL,
10845 },
10846 {
10847 .cmd = NL80211_CMD_SET_MCAST_RATE,
10848 .doit = nl80211_set_mcast_rate,
10849 .policy = nl80211_policy,
10850 .flags = GENL_ADMIN_PERM,
10851 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10852 NL80211_FLAG_NEED_RTNL,
10853 },
10854 {
10855 .cmd = NL80211_CMD_SET_MAC_ACL,
10856 .doit = nl80211_set_mac_acl,
10857 .policy = nl80211_policy,
10858 .flags = GENL_ADMIN_PERM,
10859 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10860 NL80211_FLAG_NEED_RTNL,
10861 },
10862 {
10863 .cmd = NL80211_CMD_RADAR_DETECT,
10864 .doit = nl80211_start_radar_detection,
10865 .policy = nl80211_policy,
10866 .flags = GENL_ADMIN_PERM,
10867 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10868 NL80211_FLAG_NEED_RTNL,
10869 },
10870 {
10871 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10872 .doit = nl80211_get_protocol_features,
10873 .policy = nl80211_policy,
10874 },
10875 {
10876 .cmd = NL80211_CMD_UPDATE_FT_IES,
10877 .doit = nl80211_update_ft_ies,
10878 .policy = nl80211_policy,
10879 .flags = GENL_ADMIN_PERM,
10880 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10881 NL80211_FLAG_NEED_RTNL,
10882 },
10883 {
10884 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10885 .doit = nl80211_crit_protocol_start,
10886 .policy = nl80211_policy,
10887 .flags = GENL_ADMIN_PERM,
10888 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10889 NL80211_FLAG_NEED_RTNL,
10890 },
10891 {
10892 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10893 .doit = nl80211_crit_protocol_stop,
10894 .policy = nl80211_policy,
10895 .flags = GENL_ADMIN_PERM,
10896 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10897 NL80211_FLAG_NEED_RTNL,
10898 },
10899 {
10900 .cmd = NL80211_CMD_GET_COALESCE,
10901 .doit = nl80211_get_coalesce,
10902 .policy = nl80211_policy,
10903 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10904 NL80211_FLAG_NEED_RTNL,
10905 },
10906 {
10907 .cmd = NL80211_CMD_SET_COALESCE,
10908 .doit = nl80211_set_coalesce,
10909 .policy = nl80211_policy,
10910 .flags = GENL_ADMIN_PERM,
10911 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10912 NL80211_FLAG_NEED_RTNL,
10913 },
10914 {
10915 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10916 .doit = nl80211_channel_switch,
10917 .policy = nl80211_policy,
10918 .flags = GENL_ADMIN_PERM,
10919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10920 NL80211_FLAG_NEED_RTNL,
10921 },
10922 {
10923 .cmd = NL80211_CMD_VENDOR,
10924 .doit = nl80211_vendor_cmd,
10925 .policy = nl80211_policy,
10926 .flags = GENL_ADMIN_PERM,
10927 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10928 NL80211_FLAG_NEED_RTNL,
10929 },
10930 {
10931 .cmd = NL80211_CMD_SET_QOS_MAP,
10932 .doit = nl80211_set_qos_map,
10933 .policy = nl80211_policy,
10934 .flags = GENL_ADMIN_PERM,
10935 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10936 NL80211_FLAG_NEED_RTNL,
10937 },
10938 {
10939 .cmd = NL80211_CMD_ADD_TX_TS,
10940 .doit = nl80211_add_tx_ts,
10941 .policy = nl80211_policy,
10942 .flags = GENL_ADMIN_PERM,
10943 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10944 NL80211_FLAG_NEED_RTNL,
10945 },
10946 {
10947 .cmd = NL80211_CMD_DEL_TX_TS,
10948 .doit = nl80211_del_tx_ts,
10949 .policy = nl80211_policy,
10950 .flags = GENL_ADMIN_PERM,
10951 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10952 NL80211_FLAG_NEED_RTNL,
10953 },
10954 {
10955 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10956 .doit = nl80211_tdls_channel_switch,
10957 .policy = nl80211_policy,
10958 .flags = GENL_ADMIN_PERM,
10959 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10960 NL80211_FLAG_NEED_RTNL,
10961 },
10962 {
10963 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10964 .doit = nl80211_tdls_cancel_channel_switch,
10965 .policy = nl80211_policy,
10966 .flags = GENL_ADMIN_PERM,
10967 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10968 NL80211_FLAG_NEED_RTNL,
10969 },
10970 };
10971
10972 /* notification functions */
10973
10974 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10975 enum nl80211_commands cmd)
10976 {
10977 struct sk_buff *msg;
10978 struct nl80211_dump_wiphy_state state = {};
10979
10980 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10981 cmd != NL80211_CMD_DEL_WIPHY);
10982
10983 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10984 if (!msg)
10985 return;
10986
10987 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10988 nlmsg_free(msg);
10989 return;
10990 }
10991
10992 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10993 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10994 }
10995
10996 static int nl80211_add_scan_req(struct sk_buff *msg,
10997 struct cfg80211_registered_device *rdev)
10998 {
10999 struct cfg80211_scan_request *req = rdev->scan_req;
11000 struct nlattr *nest;
11001 int i;
11002
11003 if (WARN_ON(!req))
11004 return 0;
11005
11006 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11007 if (!nest)
11008 goto nla_put_failure;
11009 for (i = 0; i < req->n_ssids; i++) {
11010 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11011 goto nla_put_failure;
11012 }
11013 nla_nest_end(msg, nest);
11014
11015 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11016 if (!nest)
11017 goto nla_put_failure;
11018 for (i = 0; i < req->n_channels; i++) {
11019 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11020 goto nla_put_failure;
11021 }
11022 nla_nest_end(msg, nest);
11023
11024 if (req->ie &&
11025 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11026 goto nla_put_failure;
11027
11028 if (req->flags &&
11029 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11030 goto nla_put_failure;
11031
11032 return 0;
11033 nla_put_failure:
11034 return -ENOBUFS;
11035 }
11036
11037 static int nl80211_send_scan_msg(struct sk_buff *msg,
11038 struct cfg80211_registered_device *rdev,
11039 struct wireless_dev *wdev,
11040 u32 portid, u32 seq, int flags,
11041 u32 cmd)
11042 {
11043 void *hdr;
11044
11045 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11046 if (!hdr)
11047 return -1;
11048
11049 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11050 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11051 wdev->netdev->ifindex)) ||
11052 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11053 goto nla_put_failure;
11054
11055 /* ignore errors and send incomplete event anyway */
11056 nl80211_add_scan_req(msg, rdev);
11057
11058 genlmsg_end(msg, hdr);
11059 return 0;
11060
11061 nla_put_failure:
11062 genlmsg_cancel(msg, hdr);
11063 return -EMSGSIZE;
11064 }
11065
11066 static int
11067 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11068 struct cfg80211_registered_device *rdev,
11069 struct net_device *netdev,
11070 u32 portid, u32 seq, int flags, u32 cmd)
11071 {
11072 void *hdr;
11073
11074 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11075 if (!hdr)
11076 return -1;
11077
11078 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11079 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11080 goto nla_put_failure;
11081
11082 genlmsg_end(msg, hdr);
11083 return 0;
11084
11085 nla_put_failure:
11086 genlmsg_cancel(msg, hdr);
11087 return -EMSGSIZE;
11088 }
11089
11090 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11091 struct wireless_dev *wdev)
11092 {
11093 struct sk_buff *msg;
11094
11095 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11096 if (!msg)
11097 return;
11098
11099 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11100 NL80211_CMD_TRIGGER_SCAN) < 0) {
11101 nlmsg_free(msg);
11102 return;
11103 }
11104
11105 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11106 NL80211_MCGRP_SCAN, GFP_KERNEL);
11107 }
11108
11109 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11110 struct wireless_dev *wdev, bool aborted)
11111 {
11112 struct sk_buff *msg;
11113
11114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11115 if (!msg)
11116 return NULL;
11117
11118 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11119 aborted ? NL80211_CMD_SCAN_ABORTED :
11120 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11121 nlmsg_free(msg);
11122 return NULL;
11123 }
11124
11125 return msg;
11126 }
11127
11128 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11129 struct sk_buff *msg)
11130 {
11131 if (!msg)
11132 return;
11133
11134 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11135 NL80211_MCGRP_SCAN, GFP_KERNEL);
11136 }
11137
11138 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11139 struct net_device *netdev)
11140 {
11141 struct sk_buff *msg;
11142
11143 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11144 if (!msg)
11145 return;
11146
11147 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11148 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11149 nlmsg_free(msg);
11150 return;
11151 }
11152
11153 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11154 NL80211_MCGRP_SCAN, GFP_KERNEL);
11155 }
11156
11157 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11158 struct net_device *netdev, u32 cmd)
11159 {
11160 struct sk_buff *msg;
11161
11162 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11163 if (!msg)
11164 return;
11165
11166 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11167 nlmsg_free(msg);
11168 return;
11169 }
11170
11171 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11172 NL80211_MCGRP_SCAN, GFP_KERNEL);
11173 }
11174
11175 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11176 struct regulatory_request *request)
11177 {
11178 /* Userspace can always count this one always being set */
11179 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11180 goto nla_put_failure;
11181
11182 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11183 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11184 NL80211_REGDOM_TYPE_WORLD))
11185 goto nla_put_failure;
11186 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11187 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11188 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11189 goto nla_put_failure;
11190 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11191 request->intersect) {
11192 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11193 NL80211_REGDOM_TYPE_INTERSECTION))
11194 goto nla_put_failure;
11195 } else {
11196 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11197 NL80211_REGDOM_TYPE_COUNTRY) ||
11198 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11199 request->alpha2))
11200 goto nla_put_failure;
11201 }
11202
11203 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11204 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11205
11206 if (wiphy &&
11207 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11208 goto nla_put_failure;
11209
11210 if (wiphy &&
11211 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11212 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11213 goto nla_put_failure;
11214 }
11215
11216 return true;
11217
11218 nla_put_failure:
11219 return false;
11220 }
11221
11222 /*
11223 * This can happen on global regulatory changes or device specific settings
11224 * based on custom regulatory domains.
11225 */
11226 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11227 struct regulatory_request *request)
11228 {
11229 struct sk_buff *msg;
11230 void *hdr;
11231
11232 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11233 if (!msg)
11234 return;
11235
11236 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11237 if (!hdr) {
11238 nlmsg_free(msg);
11239 return;
11240 }
11241
11242 if (nl80211_reg_change_event_fill(msg, request) == false)
11243 goto nla_put_failure;
11244
11245 genlmsg_end(msg, hdr);
11246
11247 rcu_read_lock();
11248 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11249 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11250 rcu_read_unlock();
11251
11252 return;
11253
11254 nla_put_failure:
11255 genlmsg_cancel(msg, hdr);
11256 nlmsg_free(msg);
11257 }
11258
11259 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11260 struct net_device *netdev,
11261 const u8 *buf, size_t len,
11262 enum nl80211_commands cmd, gfp_t gfp,
11263 int uapsd_queues)
11264 {
11265 struct sk_buff *msg;
11266 void *hdr;
11267
11268 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11269 if (!msg)
11270 return;
11271
11272 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11273 if (!hdr) {
11274 nlmsg_free(msg);
11275 return;
11276 }
11277
11278 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11279 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11280 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11281 goto nla_put_failure;
11282
11283 if (uapsd_queues >= 0) {
11284 struct nlattr *nla_wmm =
11285 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11286 if (!nla_wmm)
11287 goto nla_put_failure;
11288
11289 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11290 uapsd_queues))
11291 goto nla_put_failure;
11292
11293 nla_nest_end(msg, nla_wmm);
11294 }
11295
11296 genlmsg_end(msg, hdr);
11297
11298 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11299 NL80211_MCGRP_MLME, gfp);
11300 return;
11301
11302 nla_put_failure:
11303 genlmsg_cancel(msg, hdr);
11304 nlmsg_free(msg);
11305 }
11306
11307 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11308 struct net_device *netdev, const u8 *buf,
11309 size_t len, gfp_t gfp)
11310 {
11311 nl80211_send_mlme_event(rdev, netdev, buf, len,
11312 NL80211_CMD_AUTHENTICATE, gfp, -1);
11313 }
11314
11315 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11316 struct net_device *netdev, const u8 *buf,
11317 size_t len, gfp_t gfp, int uapsd_queues)
11318 {
11319 nl80211_send_mlme_event(rdev, netdev, buf, len,
11320 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11321 }
11322
11323 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11324 struct net_device *netdev, const u8 *buf,
11325 size_t len, gfp_t gfp)
11326 {
11327 nl80211_send_mlme_event(rdev, netdev, buf, len,
11328 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11329 }
11330
11331 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11332 struct net_device *netdev, const u8 *buf,
11333 size_t len, gfp_t gfp)
11334 {
11335 nl80211_send_mlme_event(rdev, netdev, buf, len,
11336 NL80211_CMD_DISASSOCIATE, gfp, -1);
11337 }
11338
11339 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11340 size_t len)
11341 {
11342 struct wireless_dev *wdev = dev->ieee80211_ptr;
11343 struct wiphy *wiphy = wdev->wiphy;
11344 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11345 const struct ieee80211_mgmt *mgmt = (void *)buf;
11346 u32 cmd;
11347
11348 if (WARN_ON(len < 2))
11349 return;
11350
11351 if (ieee80211_is_deauth(mgmt->frame_control))
11352 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11353 else
11354 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11355
11356 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11357 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11358 }
11359 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11360
11361 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11362 struct net_device *netdev, int cmd,
11363 const u8 *addr, gfp_t gfp)
11364 {
11365 struct sk_buff *msg;
11366 void *hdr;
11367
11368 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11369 if (!msg)
11370 return;
11371
11372 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11373 if (!hdr) {
11374 nlmsg_free(msg);
11375 return;
11376 }
11377
11378 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11379 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11380 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11381 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11382 goto nla_put_failure;
11383
11384 genlmsg_end(msg, hdr);
11385
11386 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11387 NL80211_MCGRP_MLME, gfp);
11388 return;
11389
11390 nla_put_failure:
11391 genlmsg_cancel(msg, hdr);
11392 nlmsg_free(msg);
11393 }
11394
11395 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11396 struct net_device *netdev, const u8 *addr,
11397 gfp_t gfp)
11398 {
11399 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11400 addr, gfp);
11401 }
11402
11403 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11404 struct net_device *netdev, const u8 *addr,
11405 gfp_t gfp)
11406 {
11407 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11408 addr, gfp);
11409 }
11410
11411 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11412 struct net_device *netdev, const u8 *bssid,
11413 const u8 *req_ie, size_t req_ie_len,
11414 const u8 *resp_ie, size_t resp_ie_len,
11415 u16 status, gfp_t gfp)
11416 {
11417 struct sk_buff *msg;
11418 void *hdr;
11419
11420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11421 if (!msg)
11422 return;
11423
11424 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11425 if (!hdr) {
11426 nlmsg_free(msg);
11427 return;
11428 }
11429
11430 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11431 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11432 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11433 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11434 (req_ie &&
11435 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11436 (resp_ie &&
11437 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11438 goto nla_put_failure;
11439
11440 genlmsg_end(msg, hdr);
11441
11442 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11443 NL80211_MCGRP_MLME, gfp);
11444 return;
11445
11446 nla_put_failure:
11447 genlmsg_cancel(msg, hdr);
11448 nlmsg_free(msg);
11449
11450 }
11451
11452 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11453 struct net_device *netdev, const u8 *bssid,
11454 const u8 *req_ie, size_t req_ie_len,
11455 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11456 {
11457 struct sk_buff *msg;
11458 void *hdr;
11459
11460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11461 if (!msg)
11462 return;
11463
11464 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11465 if (!hdr) {
11466 nlmsg_free(msg);
11467 return;
11468 }
11469
11470 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11471 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11472 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11473 (req_ie &&
11474 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11475 (resp_ie &&
11476 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11477 goto nla_put_failure;
11478
11479 genlmsg_end(msg, hdr);
11480
11481 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11482 NL80211_MCGRP_MLME, gfp);
11483 return;
11484
11485 nla_put_failure:
11486 genlmsg_cancel(msg, hdr);
11487 nlmsg_free(msg);
11488
11489 }
11490
11491 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11492 struct net_device *netdev, u16 reason,
11493 const u8 *ie, size_t ie_len, bool from_ap)
11494 {
11495 struct sk_buff *msg;
11496 void *hdr;
11497
11498 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11499 if (!msg)
11500 return;
11501
11502 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11503 if (!hdr) {
11504 nlmsg_free(msg);
11505 return;
11506 }
11507
11508 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11509 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11510 (from_ap && reason &&
11511 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11512 (from_ap &&
11513 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11514 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11515 goto nla_put_failure;
11516
11517 genlmsg_end(msg, hdr);
11518
11519 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11520 NL80211_MCGRP_MLME, GFP_KERNEL);
11521 return;
11522
11523 nla_put_failure:
11524 genlmsg_cancel(msg, hdr);
11525 nlmsg_free(msg);
11526
11527 }
11528
11529 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11530 struct net_device *netdev, const u8 *bssid,
11531 gfp_t gfp)
11532 {
11533 struct sk_buff *msg;
11534 void *hdr;
11535
11536 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11537 if (!msg)
11538 return;
11539
11540 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11541 if (!hdr) {
11542 nlmsg_free(msg);
11543 return;
11544 }
11545
11546 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11547 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11548 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11549 goto nla_put_failure;
11550
11551 genlmsg_end(msg, hdr);
11552
11553 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11554 NL80211_MCGRP_MLME, gfp);
11555 return;
11556
11557 nla_put_failure:
11558 genlmsg_cancel(msg, hdr);
11559 nlmsg_free(msg);
11560 }
11561
11562 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11563 const u8* ie, u8 ie_len, gfp_t gfp)
11564 {
11565 struct wireless_dev *wdev = dev->ieee80211_ptr;
11566 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11567 struct sk_buff *msg;
11568 void *hdr;
11569
11570 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11571 return;
11572
11573 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11574
11575 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11576 if (!msg)
11577 return;
11578
11579 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11580 if (!hdr) {
11581 nlmsg_free(msg);
11582 return;
11583 }
11584
11585 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11586 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11587 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11588 (ie_len && ie &&
11589 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11590 goto nla_put_failure;
11591
11592 genlmsg_end(msg, hdr);
11593
11594 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11595 NL80211_MCGRP_MLME, gfp);
11596 return;
11597
11598 nla_put_failure:
11599 genlmsg_cancel(msg, hdr);
11600 nlmsg_free(msg);
11601 }
11602 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11603
11604 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11605 struct net_device *netdev, const u8 *addr,
11606 enum nl80211_key_type key_type, int key_id,
11607 const u8 *tsc, gfp_t gfp)
11608 {
11609 struct sk_buff *msg;
11610 void *hdr;
11611
11612 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11613 if (!msg)
11614 return;
11615
11616 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11617 if (!hdr) {
11618 nlmsg_free(msg);
11619 return;
11620 }
11621
11622 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11623 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11624 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11625 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11626 (key_id != -1 &&
11627 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11628 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11629 goto nla_put_failure;
11630
11631 genlmsg_end(msg, hdr);
11632
11633 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11634 NL80211_MCGRP_MLME, gfp);
11635 return;
11636
11637 nla_put_failure:
11638 genlmsg_cancel(msg, hdr);
11639 nlmsg_free(msg);
11640 }
11641
11642 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11643 struct ieee80211_channel *channel_before,
11644 struct ieee80211_channel *channel_after)
11645 {
11646 struct sk_buff *msg;
11647 void *hdr;
11648 struct nlattr *nl_freq;
11649
11650 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11651 if (!msg)
11652 return;
11653
11654 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11655 if (!hdr) {
11656 nlmsg_free(msg);
11657 return;
11658 }
11659
11660 /*
11661 * Since we are applying the beacon hint to a wiphy we know its
11662 * wiphy_idx is valid
11663 */
11664 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11665 goto nla_put_failure;
11666
11667 /* Before */
11668 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11669 if (!nl_freq)
11670 goto nla_put_failure;
11671 if (nl80211_msg_put_channel(msg, channel_before, false))
11672 goto nla_put_failure;
11673 nla_nest_end(msg, nl_freq);
11674
11675 /* After */
11676 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11677 if (!nl_freq)
11678 goto nla_put_failure;
11679 if (nl80211_msg_put_channel(msg, channel_after, false))
11680 goto nla_put_failure;
11681 nla_nest_end(msg, nl_freq);
11682
11683 genlmsg_end(msg, hdr);
11684
11685 rcu_read_lock();
11686 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11687 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11688 rcu_read_unlock();
11689
11690 return;
11691
11692 nla_put_failure:
11693 genlmsg_cancel(msg, hdr);
11694 nlmsg_free(msg);
11695 }
11696
11697 static void nl80211_send_remain_on_chan_event(
11698 int cmd, struct cfg80211_registered_device *rdev,
11699 struct wireless_dev *wdev, u64 cookie,
11700 struct ieee80211_channel *chan,
11701 unsigned int duration, gfp_t gfp)
11702 {
11703 struct sk_buff *msg;
11704 void *hdr;
11705
11706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11707 if (!msg)
11708 return;
11709
11710 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11711 if (!hdr) {
11712 nlmsg_free(msg);
11713 return;
11714 }
11715
11716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11717 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11718 wdev->netdev->ifindex)) ||
11719 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11720 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11721 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11722 NL80211_CHAN_NO_HT) ||
11723 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11724 goto nla_put_failure;
11725
11726 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11727 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11728 goto nla_put_failure;
11729
11730 genlmsg_end(msg, hdr);
11731
11732 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11733 NL80211_MCGRP_MLME, gfp);
11734 return;
11735
11736 nla_put_failure:
11737 genlmsg_cancel(msg, hdr);
11738 nlmsg_free(msg);
11739 }
11740
11741 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11742 struct ieee80211_channel *chan,
11743 unsigned int duration, gfp_t gfp)
11744 {
11745 struct wiphy *wiphy = wdev->wiphy;
11746 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11747
11748 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11749 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11750 rdev, wdev, cookie, chan,
11751 duration, gfp);
11752 }
11753 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11754
11755 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11756 struct ieee80211_channel *chan,
11757 gfp_t gfp)
11758 {
11759 struct wiphy *wiphy = wdev->wiphy;
11760 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11761
11762 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11763 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11764 rdev, wdev, cookie, chan, 0, gfp);
11765 }
11766 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11767
11768 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11769 struct station_info *sinfo, gfp_t gfp)
11770 {
11771 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11772 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11773 struct sk_buff *msg;
11774
11775 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11776
11777 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11778 if (!msg)
11779 return;
11780
11781 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11782 rdev, dev, mac_addr, sinfo) < 0) {
11783 nlmsg_free(msg);
11784 return;
11785 }
11786
11787 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11788 NL80211_MCGRP_MLME, gfp);
11789 }
11790 EXPORT_SYMBOL(cfg80211_new_sta);
11791
11792 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11793 struct station_info *sinfo, gfp_t gfp)
11794 {
11795 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11796 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11797 struct sk_buff *msg;
11798 struct station_info empty_sinfo = {};
11799
11800 if (!sinfo)
11801 sinfo = &empty_sinfo;
11802
11803 trace_cfg80211_del_sta(dev, mac_addr);
11804
11805 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11806 if (!msg)
11807 return;
11808
11809 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11810 rdev, dev, mac_addr, sinfo) < 0) {
11811 nlmsg_free(msg);
11812 return;
11813 }
11814
11815 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11816 NL80211_MCGRP_MLME, gfp);
11817 }
11818 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11819
11820 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11821 enum nl80211_connect_failed_reason reason,
11822 gfp_t gfp)
11823 {
11824 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11825 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11826 struct sk_buff *msg;
11827 void *hdr;
11828
11829 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11830 if (!msg)
11831 return;
11832
11833 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11834 if (!hdr) {
11835 nlmsg_free(msg);
11836 return;
11837 }
11838
11839 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11840 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11841 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11842 goto nla_put_failure;
11843
11844 genlmsg_end(msg, hdr);
11845
11846 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11847 NL80211_MCGRP_MLME, gfp);
11848 return;
11849
11850 nla_put_failure:
11851 genlmsg_cancel(msg, hdr);
11852 nlmsg_free(msg);
11853 }
11854 EXPORT_SYMBOL(cfg80211_conn_failed);
11855
11856 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11857 const u8 *addr, gfp_t gfp)
11858 {
11859 struct wireless_dev *wdev = dev->ieee80211_ptr;
11860 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11861 struct sk_buff *msg;
11862 void *hdr;
11863 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11864
11865 if (!nlportid)
11866 return false;
11867
11868 msg = nlmsg_new(100, gfp);
11869 if (!msg)
11870 return true;
11871
11872 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11873 if (!hdr) {
11874 nlmsg_free(msg);
11875 return true;
11876 }
11877
11878 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11879 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11880 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11881 goto nla_put_failure;
11882
11883 genlmsg_end(msg, hdr);
11884 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11885 return true;
11886
11887 nla_put_failure:
11888 genlmsg_cancel(msg, hdr);
11889 nlmsg_free(msg);
11890 return true;
11891 }
11892
11893 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11894 const u8 *addr, gfp_t gfp)
11895 {
11896 struct wireless_dev *wdev = dev->ieee80211_ptr;
11897 bool ret;
11898
11899 trace_cfg80211_rx_spurious_frame(dev, addr);
11900
11901 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11902 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11903 trace_cfg80211_return_bool(false);
11904 return false;
11905 }
11906 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11907 addr, gfp);
11908 trace_cfg80211_return_bool(ret);
11909 return ret;
11910 }
11911 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11912
11913 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11914 const u8 *addr, gfp_t gfp)
11915 {
11916 struct wireless_dev *wdev = dev->ieee80211_ptr;
11917 bool ret;
11918
11919 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11920
11921 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11922 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11923 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11924 trace_cfg80211_return_bool(false);
11925 return false;
11926 }
11927 ret = __nl80211_unexpected_frame(dev,
11928 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11929 addr, gfp);
11930 trace_cfg80211_return_bool(ret);
11931 return ret;
11932 }
11933 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11934
11935 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11936 struct wireless_dev *wdev, u32 nlportid,
11937 int freq, int sig_dbm,
11938 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11939 {
11940 struct net_device *netdev = wdev->netdev;
11941 struct sk_buff *msg;
11942 void *hdr;
11943
11944 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11945 if (!msg)
11946 return -ENOMEM;
11947
11948 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11949 if (!hdr) {
11950 nlmsg_free(msg);
11951 return -ENOMEM;
11952 }
11953
11954 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11955 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11956 netdev->ifindex)) ||
11957 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11958 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11959 (sig_dbm &&
11960 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11961 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11962 (flags &&
11963 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11964 goto nla_put_failure;
11965
11966 genlmsg_end(msg, hdr);
11967
11968 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11969
11970 nla_put_failure:
11971 genlmsg_cancel(msg, hdr);
11972 nlmsg_free(msg);
11973 return -ENOBUFS;
11974 }
11975
11976 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11977 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11978 {
11979 struct wiphy *wiphy = wdev->wiphy;
11980 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11981 struct net_device *netdev = wdev->netdev;
11982 struct sk_buff *msg;
11983 void *hdr;
11984
11985 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11986
11987 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11988 if (!msg)
11989 return;
11990
11991 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11992 if (!hdr) {
11993 nlmsg_free(msg);
11994 return;
11995 }
11996
11997 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11998 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11999 netdev->ifindex)) ||
12000 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12001 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12002 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12003 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12004 goto nla_put_failure;
12005
12006 genlmsg_end(msg, hdr);
12007
12008 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12009 NL80211_MCGRP_MLME, gfp);
12010 return;
12011
12012 nla_put_failure:
12013 genlmsg_cancel(msg, hdr);
12014 nlmsg_free(msg);
12015 }
12016 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12017
12018 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12019 const char *mac, gfp_t gfp)
12020 {
12021 struct wireless_dev *wdev = dev->ieee80211_ptr;
12022 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12023 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12024 void **cb;
12025
12026 if (!msg)
12027 return NULL;
12028
12029 cb = (void **)msg->cb;
12030
12031 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12032 if (!cb[0]) {
12033 nlmsg_free(msg);
12034 return NULL;
12035 }
12036
12037 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12038 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12039 goto nla_put_failure;
12040
12041 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12042 goto nla_put_failure;
12043
12044 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12045 if (!cb[1])
12046 goto nla_put_failure;
12047
12048 cb[2] = rdev;
12049
12050 return msg;
12051 nla_put_failure:
12052 nlmsg_free(msg);
12053 return NULL;
12054 }
12055
12056 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12057 {
12058 void **cb = (void **)msg->cb;
12059 struct cfg80211_registered_device *rdev = cb[2];
12060
12061 nla_nest_end(msg, cb[1]);
12062 genlmsg_end(msg, cb[0]);
12063
12064 memset(msg->cb, 0, sizeof(msg->cb));
12065
12066 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12067 NL80211_MCGRP_MLME, gfp);
12068 }
12069
12070 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12071 enum nl80211_cqm_rssi_threshold_event rssi_event,
12072 gfp_t gfp)
12073 {
12074 struct sk_buff *msg;
12075
12076 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12077
12078 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12079 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12080 return;
12081
12082 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12083 if (!msg)
12084 return;
12085
12086 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12087 rssi_event))
12088 goto nla_put_failure;
12089
12090 cfg80211_send_cqm(msg, gfp);
12091
12092 return;
12093
12094 nla_put_failure:
12095 nlmsg_free(msg);
12096 }
12097 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12098
12099 void cfg80211_cqm_txe_notify(struct net_device *dev,
12100 const u8 *peer, u32 num_packets,
12101 u32 rate, u32 intvl, gfp_t gfp)
12102 {
12103 struct sk_buff *msg;
12104
12105 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12106 if (!msg)
12107 return;
12108
12109 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12110 goto nla_put_failure;
12111
12112 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12113 goto nla_put_failure;
12114
12115 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12116 goto nla_put_failure;
12117
12118 cfg80211_send_cqm(msg, gfp);
12119 return;
12120
12121 nla_put_failure:
12122 nlmsg_free(msg);
12123 }
12124 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12125
12126 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12127 const u8 *peer, u32 num_packets, gfp_t gfp)
12128 {
12129 struct sk_buff *msg;
12130
12131 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12132
12133 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12134 if (!msg)
12135 return;
12136
12137 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12138 goto nla_put_failure;
12139
12140 cfg80211_send_cqm(msg, gfp);
12141 return;
12142
12143 nla_put_failure:
12144 nlmsg_free(msg);
12145 }
12146 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12147
12148 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12149 {
12150 struct sk_buff *msg;
12151
12152 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12153 if (!msg)
12154 return;
12155
12156 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12157 goto nla_put_failure;
12158
12159 cfg80211_send_cqm(msg, gfp);
12160 return;
12161
12162 nla_put_failure:
12163 nlmsg_free(msg);
12164 }
12165 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12166
12167 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12168 struct net_device *netdev, const u8 *bssid,
12169 const u8 *replay_ctr, gfp_t gfp)
12170 {
12171 struct sk_buff *msg;
12172 struct nlattr *rekey_attr;
12173 void *hdr;
12174
12175 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12176 if (!msg)
12177 return;
12178
12179 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12180 if (!hdr) {
12181 nlmsg_free(msg);
12182 return;
12183 }
12184
12185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12186 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12187 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12188 goto nla_put_failure;
12189
12190 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12191 if (!rekey_attr)
12192 goto nla_put_failure;
12193
12194 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12195 NL80211_REPLAY_CTR_LEN, replay_ctr))
12196 goto nla_put_failure;
12197
12198 nla_nest_end(msg, rekey_attr);
12199
12200 genlmsg_end(msg, hdr);
12201
12202 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12203 NL80211_MCGRP_MLME, gfp);
12204 return;
12205
12206 nla_put_failure:
12207 genlmsg_cancel(msg, hdr);
12208 nlmsg_free(msg);
12209 }
12210
12211 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12212 const u8 *replay_ctr, gfp_t gfp)
12213 {
12214 struct wireless_dev *wdev = dev->ieee80211_ptr;
12215 struct wiphy *wiphy = wdev->wiphy;
12216 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12217
12218 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12219 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12220 }
12221 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12222
12223 static void
12224 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12225 struct net_device *netdev, int index,
12226 const u8 *bssid, bool preauth, gfp_t gfp)
12227 {
12228 struct sk_buff *msg;
12229 struct nlattr *attr;
12230 void *hdr;
12231
12232 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12233 if (!msg)
12234 return;
12235
12236 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12237 if (!hdr) {
12238 nlmsg_free(msg);
12239 return;
12240 }
12241
12242 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12243 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12244 goto nla_put_failure;
12245
12246 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12247 if (!attr)
12248 goto nla_put_failure;
12249
12250 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12251 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12252 (preauth &&
12253 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12254 goto nla_put_failure;
12255
12256 nla_nest_end(msg, attr);
12257
12258 genlmsg_end(msg, hdr);
12259
12260 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12261 NL80211_MCGRP_MLME, gfp);
12262 return;
12263
12264 nla_put_failure:
12265 genlmsg_cancel(msg, hdr);
12266 nlmsg_free(msg);
12267 }
12268
12269 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12270 const u8 *bssid, bool preauth, gfp_t gfp)
12271 {
12272 struct wireless_dev *wdev = dev->ieee80211_ptr;
12273 struct wiphy *wiphy = wdev->wiphy;
12274 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12275
12276 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12277 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12278 }
12279 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12280
12281 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12282 struct net_device *netdev,
12283 struct cfg80211_chan_def *chandef,
12284 gfp_t gfp,
12285 enum nl80211_commands notif,
12286 u8 count)
12287 {
12288 struct sk_buff *msg;
12289 void *hdr;
12290
12291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12292 if (!msg)
12293 return;
12294
12295 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12296 if (!hdr) {
12297 nlmsg_free(msg);
12298 return;
12299 }
12300
12301 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12302 goto nla_put_failure;
12303
12304 if (nl80211_send_chandef(msg, chandef))
12305 goto nla_put_failure;
12306
12307 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12308 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12309 goto nla_put_failure;
12310
12311 genlmsg_end(msg, hdr);
12312
12313 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12314 NL80211_MCGRP_MLME, gfp);
12315 return;
12316
12317 nla_put_failure:
12318 genlmsg_cancel(msg, hdr);
12319 nlmsg_free(msg);
12320 }
12321
12322 void cfg80211_ch_switch_notify(struct net_device *dev,
12323 struct cfg80211_chan_def *chandef)
12324 {
12325 struct wireless_dev *wdev = dev->ieee80211_ptr;
12326 struct wiphy *wiphy = wdev->wiphy;
12327 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12328
12329 ASSERT_WDEV_LOCK(wdev);
12330
12331 trace_cfg80211_ch_switch_notify(dev, chandef);
12332
12333 wdev->chandef = *chandef;
12334 wdev->preset_chandef = *chandef;
12335 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12336 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12337 }
12338 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12339
12340 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12341 struct cfg80211_chan_def *chandef,
12342 u8 count)
12343 {
12344 struct wireless_dev *wdev = dev->ieee80211_ptr;
12345 struct wiphy *wiphy = wdev->wiphy;
12346 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12347
12348 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12349
12350 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12351 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12352 }
12353 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12354
12355 void
12356 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12357 const struct cfg80211_chan_def *chandef,
12358 enum nl80211_radar_event event,
12359 struct net_device *netdev, gfp_t gfp)
12360 {
12361 struct sk_buff *msg;
12362 void *hdr;
12363
12364 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12365 if (!msg)
12366 return;
12367
12368 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12369 if (!hdr) {
12370 nlmsg_free(msg);
12371 return;
12372 }
12373
12374 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12375 goto nla_put_failure;
12376
12377 /* NOP and radar events don't need a netdev parameter */
12378 if (netdev) {
12379 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12380
12381 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12382 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12383 goto nla_put_failure;
12384 }
12385
12386 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12387 goto nla_put_failure;
12388
12389 if (nl80211_send_chandef(msg, chandef))
12390 goto nla_put_failure;
12391
12392 genlmsg_end(msg, hdr);
12393
12394 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12395 NL80211_MCGRP_MLME, gfp);
12396 return;
12397
12398 nla_put_failure:
12399 genlmsg_cancel(msg, hdr);
12400 nlmsg_free(msg);
12401 }
12402
12403 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12404 u64 cookie, bool acked, gfp_t gfp)
12405 {
12406 struct wireless_dev *wdev = dev->ieee80211_ptr;
12407 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12408 struct sk_buff *msg;
12409 void *hdr;
12410
12411 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12412
12413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12414
12415 if (!msg)
12416 return;
12417
12418 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12419 if (!hdr) {
12420 nlmsg_free(msg);
12421 return;
12422 }
12423
12424 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12425 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12426 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12427 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12428 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12429 goto nla_put_failure;
12430
12431 genlmsg_end(msg, hdr);
12432
12433 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12434 NL80211_MCGRP_MLME, gfp);
12435 return;
12436
12437 nla_put_failure:
12438 genlmsg_cancel(msg, hdr);
12439 nlmsg_free(msg);
12440 }
12441 EXPORT_SYMBOL(cfg80211_probe_status);
12442
12443 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12444 const u8 *frame, size_t len,
12445 int freq, int sig_dbm)
12446 {
12447 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12448 struct sk_buff *msg;
12449 void *hdr;
12450 struct cfg80211_beacon_registration *reg;
12451
12452 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12453
12454 spin_lock_bh(&rdev->beacon_registrations_lock);
12455 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12456 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12457 if (!msg) {
12458 spin_unlock_bh(&rdev->beacon_registrations_lock);
12459 return;
12460 }
12461
12462 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12463 if (!hdr)
12464 goto nla_put_failure;
12465
12466 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12467 (freq &&
12468 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12469 (sig_dbm &&
12470 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12471 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12472 goto nla_put_failure;
12473
12474 genlmsg_end(msg, hdr);
12475
12476 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12477 }
12478 spin_unlock_bh(&rdev->beacon_registrations_lock);
12479 return;
12480
12481 nla_put_failure:
12482 spin_unlock_bh(&rdev->beacon_registrations_lock);
12483 if (hdr)
12484 genlmsg_cancel(msg, hdr);
12485 nlmsg_free(msg);
12486 }
12487 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12488
12489 #ifdef CONFIG_PM
12490 static int cfg80211_net_detect_results(struct sk_buff *msg,
12491 struct cfg80211_wowlan_wakeup *wakeup)
12492 {
12493 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12494 struct nlattr *nl_results, *nl_match, *nl_freqs;
12495 int i, j;
12496
12497 nl_results = nla_nest_start(
12498 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12499 if (!nl_results)
12500 return -EMSGSIZE;
12501
12502 for (i = 0; i < nd->n_matches; i++) {
12503 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12504
12505 nl_match = nla_nest_start(msg, i);
12506 if (!nl_match)
12507 break;
12508
12509 /* The SSID attribute is optional in nl80211, but for
12510 * simplicity reasons it's always present in the
12511 * cfg80211 structure. If a driver can't pass the
12512 * SSID, that needs to be changed. A zero length SSID
12513 * is still a valid SSID (wildcard), so it cannot be
12514 * used for this purpose.
12515 */
12516 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12517 match->ssid.ssid)) {
12518 nla_nest_cancel(msg, nl_match);
12519 goto out;
12520 }
12521
12522 if (match->n_channels) {
12523 nl_freqs = nla_nest_start(
12524 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12525 if (!nl_freqs) {
12526 nla_nest_cancel(msg, nl_match);
12527 goto out;
12528 }
12529
12530 for (j = 0; j < match->n_channels; j++) {
12531 if (nla_put_u32(msg,
12532 NL80211_ATTR_WIPHY_FREQ,
12533 match->channels[j])) {
12534 nla_nest_cancel(msg, nl_freqs);
12535 nla_nest_cancel(msg, nl_match);
12536 goto out;
12537 }
12538 }
12539
12540 nla_nest_end(msg, nl_freqs);
12541 }
12542
12543 nla_nest_end(msg, nl_match);
12544 }
12545
12546 out:
12547 nla_nest_end(msg, nl_results);
12548 return 0;
12549 }
12550
12551 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12552 struct cfg80211_wowlan_wakeup *wakeup,
12553 gfp_t gfp)
12554 {
12555 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12556 struct sk_buff *msg;
12557 void *hdr;
12558 int size = 200;
12559
12560 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12561
12562 if (wakeup)
12563 size += wakeup->packet_present_len;
12564
12565 msg = nlmsg_new(size, gfp);
12566 if (!msg)
12567 return;
12568
12569 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12570 if (!hdr)
12571 goto free_msg;
12572
12573 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12574 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12575 goto free_msg;
12576
12577 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12578 wdev->netdev->ifindex))
12579 goto free_msg;
12580
12581 if (wakeup) {
12582 struct nlattr *reasons;
12583
12584 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12585 if (!reasons)
12586 goto free_msg;
12587
12588 if (wakeup->disconnect &&
12589 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12590 goto free_msg;
12591 if (wakeup->magic_pkt &&
12592 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12593 goto free_msg;
12594 if (wakeup->gtk_rekey_failure &&
12595 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12596 goto free_msg;
12597 if (wakeup->eap_identity_req &&
12598 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12599 goto free_msg;
12600 if (wakeup->four_way_handshake &&
12601 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12602 goto free_msg;
12603 if (wakeup->rfkill_release &&
12604 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12605 goto free_msg;
12606
12607 if (wakeup->pattern_idx >= 0 &&
12608 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12609 wakeup->pattern_idx))
12610 goto free_msg;
12611
12612 if (wakeup->tcp_match &&
12613 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12614 goto free_msg;
12615
12616 if (wakeup->tcp_connlost &&
12617 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12618 goto free_msg;
12619
12620 if (wakeup->tcp_nomoretokens &&
12621 nla_put_flag(msg,
12622 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12623 goto free_msg;
12624
12625 if (wakeup->packet) {
12626 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12627 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12628
12629 if (!wakeup->packet_80211) {
12630 pkt_attr =
12631 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12632 len_attr =
12633 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12634 }
12635
12636 if (wakeup->packet_len &&
12637 nla_put_u32(msg, len_attr, wakeup->packet_len))
12638 goto free_msg;
12639
12640 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12641 wakeup->packet))
12642 goto free_msg;
12643 }
12644
12645 if (wakeup->net_detect &&
12646 cfg80211_net_detect_results(msg, wakeup))
12647 goto free_msg;
12648
12649 nla_nest_end(msg, reasons);
12650 }
12651
12652 genlmsg_end(msg, hdr);
12653
12654 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12655 NL80211_MCGRP_MLME, gfp);
12656 return;
12657
12658 free_msg:
12659 nlmsg_free(msg);
12660 }
12661 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12662 #endif
12663
12664 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12665 enum nl80211_tdls_operation oper,
12666 u16 reason_code, gfp_t gfp)
12667 {
12668 struct wireless_dev *wdev = dev->ieee80211_ptr;
12669 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12670 struct sk_buff *msg;
12671 void *hdr;
12672
12673 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12674 reason_code);
12675
12676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12677 if (!msg)
12678 return;
12679
12680 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12681 if (!hdr) {
12682 nlmsg_free(msg);
12683 return;
12684 }
12685
12686 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12687 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12688 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12689 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12690 (reason_code > 0 &&
12691 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12692 goto nla_put_failure;
12693
12694 genlmsg_end(msg, hdr);
12695
12696 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12697 NL80211_MCGRP_MLME, gfp);
12698 return;
12699
12700 nla_put_failure:
12701 genlmsg_cancel(msg, hdr);
12702 nlmsg_free(msg);
12703 }
12704 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12705
12706 static int nl80211_netlink_notify(struct notifier_block * nb,
12707 unsigned long state,
12708 void *_notify)
12709 {
12710 struct netlink_notify *notify = _notify;
12711 struct cfg80211_registered_device *rdev;
12712 struct wireless_dev *wdev;
12713 struct cfg80211_beacon_registration *reg, *tmp;
12714
12715 if (state != NETLINK_URELEASE)
12716 return NOTIFY_DONE;
12717
12718 rcu_read_lock();
12719
12720 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12721 bool schedule_destroy_work = false;
12722 bool schedule_scan_stop = false;
12723 struct cfg80211_sched_scan_request *sched_scan_req =
12724 rcu_dereference(rdev->sched_scan_req);
12725
12726 if (sched_scan_req && notify->portid &&
12727 sched_scan_req->owner_nlportid == notify->portid)
12728 schedule_scan_stop = true;
12729
12730 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12731 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12732
12733 if (wdev->owner_nlportid == notify->portid)
12734 schedule_destroy_work = true;
12735 }
12736
12737 spin_lock_bh(&rdev->beacon_registrations_lock);
12738 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12739 list) {
12740 if (reg->nlportid == notify->portid) {
12741 list_del(&reg->list);
12742 kfree(reg);
12743 break;
12744 }
12745 }
12746 spin_unlock_bh(&rdev->beacon_registrations_lock);
12747
12748 if (schedule_destroy_work) {
12749 struct cfg80211_iface_destroy *destroy;
12750
12751 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12752 if (destroy) {
12753 destroy->nlportid = notify->portid;
12754 spin_lock(&rdev->destroy_list_lock);
12755 list_add(&destroy->list, &rdev->destroy_list);
12756 spin_unlock(&rdev->destroy_list_lock);
12757 schedule_work(&rdev->destroy_work);
12758 }
12759 } else if (schedule_scan_stop) {
12760 sched_scan_req->owner_nlportid = 0;
12761
12762 if (rdev->ops->sched_scan_stop &&
12763 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12764 schedule_work(&rdev->sched_scan_stop_wk);
12765 }
12766 }
12767
12768 rcu_read_unlock();
12769
12770 return NOTIFY_OK;
12771 }
12772
12773 static struct notifier_block nl80211_netlink_notifier = {
12774 .notifier_call = nl80211_netlink_notify,
12775 };
12776
12777 void cfg80211_ft_event(struct net_device *netdev,
12778 struct cfg80211_ft_event_params *ft_event)
12779 {
12780 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12781 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12782 struct sk_buff *msg;
12783 void *hdr;
12784
12785 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12786
12787 if (!ft_event->target_ap)
12788 return;
12789
12790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12791 if (!msg)
12792 return;
12793
12794 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12795 if (!hdr)
12796 goto out;
12797
12798 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12799 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12800 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12801 goto out;
12802
12803 if (ft_event->ies &&
12804 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12805 goto out;
12806 if (ft_event->ric_ies &&
12807 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12808 ft_event->ric_ies))
12809 goto out;
12810
12811 genlmsg_end(msg, hdr);
12812
12813 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12814 NL80211_MCGRP_MLME, GFP_KERNEL);
12815 return;
12816 out:
12817 nlmsg_free(msg);
12818 }
12819 EXPORT_SYMBOL(cfg80211_ft_event);
12820
12821 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12822 {
12823 struct cfg80211_registered_device *rdev;
12824 struct sk_buff *msg;
12825 void *hdr;
12826 u32 nlportid;
12827
12828 rdev = wiphy_to_rdev(wdev->wiphy);
12829 if (!rdev->crit_proto_nlportid)
12830 return;
12831
12832 nlportid = rdev->crit_proto_nlportid;
12833 rdev->crit_proto_nlportid = 0;
12834
12835 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12836 if (!msg)
12837 return;
12838
12839 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12840 if (!hdr)
12841 goto nla_put_failure;
12842
12843 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12844 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12845 goto nla_put_failure;
12846
12847 genlmsg_end(msg, hdr);
12848
12849 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12850 return;
12851
12852 nla_put_failure:
12853 if (hdr)
12854 genlmsg_cancel(msg, hdr);
12855 nlmsg_free(msg);
12856
12857 }
12858 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12859
12860 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12861 {
12862 struct wiphy *wiphy = wdev->wiphy;
12863 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12864 struct sk_buff *msg;
12865 void *hdr;
12866
12867 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12868 if (!msg)
12869 return;
12870
12871 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12872 if (!hdr)
12873 goto out;
12874
12875 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12876 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12877 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12878 goto out;
12879
12880 genlmsg_end(msg, hdr);
12881
12882 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12883 NL80211_MCGRP_MLME, GFP_KERNEL);
12884 return;
12885 out:
12886 nlmsg_free(msg);
12887 }
12888
12889 /* initialisation/exit functions */
12890
12891 int nl80211_init(void)
12892 {
12893 int err;
12894
12895 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12896 nl80211_mcgrps);
12897 if (err)
12898 return err;
12899
12900 err = netlink_register_notifier(&nl80211_netlink_notifier);
12901 if (err)
12902 goto err_out;
12903
12904 return 0;
12905 err_out:
12906 genl_unregister_family(&nl80211_fam);
12907 return err;
12908 }
12909
12910 void nl80211_exit(void)
12911 {
12912 netlink_unregister_notifier(&nl80211_netlink_notifier);
12913 genl_unregister_family(&nl80211_fam);
12914 }
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