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Merge remote-tracking branch 'mkp-scsi/4.8/scsi-fixes' into fixes
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2016 Intel Deutschland GmbH
7 */
8
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 struct genl_info *info,
32 struct cfg80211_crypto_settings *settings,
33 int cipher_limit);
34
35 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
38 struct genl_info *info);
39
40 /* the netlink family */
41 static struct genl_family nl80211_fam = {
42 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
43 .name = NL80211_GENL_NAME, /* have users key off the name instead */
44 .hdrsize = 0, /* no private header */
45 .version = 1, /* no particular meaning now */
46 .maxattr = NL80211_ATTR_MAX,
47 .netnsok = true,
48 .pre_doit = nl80211_pre_doit,
49 .post_doit = nl80211_post_doit,
50 };
51
52 /* multicast groups */
53 enum nl80211_multicast_groups {
54 NL80211_MCGRP_CONFIG,
55 NL80211_MCGRP_SCAN,
56 NL80211_MCGRP_REGULATORY,
57 NL80211_MCGRP_MLME,
58 NL80211_MCGRP_VENDOR,
59 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
60 };
61
62 static const struct genl_multicast_group nl80211_mcgrps[] = {
63 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
64 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
65 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
66 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
67 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
68 #ifdef CONFIG_NL80211_TESTMODE
69 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
70 #endif
71 };
72
73 /* returns ERR_PTR values */
74 static struct wireless_dev *
75 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
76 {
77 struct cfg80211_registered_device *rdev;
78 struct wireless_dev *result = NULL;
79 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
80 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
81 u64 wdev_id;
82 int wiphy_idx = -1;
83 int ifidx = -1;
84
85 ASSERT_RTNL();
86
87 if (!have_ifidx && !have_wdev_id)
88 return ERR_PTR(-EINVAL);
89
90 if (have_ifidx)
91 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
92 if (have_wdev_id) {
93 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
94 wiphy_idx = wdev_id >> 32;
95 }
96
97 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
98 struct wireless_dev *wdev;
99
100 if (wiphy_net(&rdev->wiphy) != netns)
101 continue;
102
103 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
104 continue;
105
106 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
107 if (have_ifidx && wdev->netdev &&
108 wdev->netdev->ifindex == ifidx) {
109 result = wdev;
110 break;
111 }
112 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
113 result = wdev;
114 break;
115 }
116 }
117
118 if (result)
119 break;
120 }
121
122 if (result)
123 return result;
124 return ERR_PTR(-ENODEV);
125 }
126
127 static struct cfg80211_registered_device *
128 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
129 {
130 struct cfg80211_registered_device *rdev = NULL, *tmp;
131 struct net_device *netdev;
132
133 ASSERT_RTNL();
134
135 if (!attrs[NL80211_ATTR_WIPHY] &&
136 !attrs[NL80211_ATTR_IFINDEX] &&
137 !attrs[NL80211_ATTR_WDEV])
138 return ERR_PTR(-EINVAL);
139
140 if (attrs[NL80211_ATTR_WIPHY])
141 rdev = cfg80211_rdev_by_wiphy_idx(
142 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
143
144 if (attrs[NL80211_ATTR_WDEV]) {
145 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
146 struct wireless_dev *wdev;
147 bool found = false;
148
149 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
150 if (tmp) {
151 /* make sure wdev exists */
152 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
153 if (wdev->identifier != (u32)wdev_id)
154 continue;
155 found = true;
156 break;
157 }
158
159 if (!found)
160 tmp = NULL;
161
162 if (rdev && tmp != rdev)
163 return ERR_PTR(-EINVAL);
164 rdev = tmp;
165 }
166 }
167
168 if (attrs[NL80211_ATTR_IFINDEX]) {
169 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
170
171 netdev = __dev_get_by_index(netns, ifindex);
172 if (netdev) {
173 if (netdev->ieee80211_ptr)
174 tmp = wiphy_to_rdev(
175 netdev->ieee80211_ptr->wiphy);
176 else
177 tmp = NULL;
178
179 /* not wireless device -- return error */
180 if (!tmp)
181 return ERR_PTR(-EINVAL);
182
183 /* mismatch -- return error */
184 if (rdev && tmp != rdev)
185 return ERR_PTR(-EINVAL);
186
187 rdev = tmp;
188 }
189 }
190
191 if (!rdev)
192 return ERR_PTR(-ENODEV);
193
194 if (netns != wiphy_net(&rdev->wiphy))
195 return ERR_PTR(-ENODEV);
196
197 return rdev;
198 }
199
200 /*
201 * This function returns a pointer to the driver
202 * that the genl_info item that is passed refers to.
203 *
204 * The result of this can be a PTR_ERR and hence must
205 * be checked with IS_ERR() for errors.
206 */
207 static struct cfg80211_registered_device *
208 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
209 {
210 return __cfg80211_rdev_from_attrs(netns, info->attrs);
211 }
212
213 /* policy for the attributes */
214 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
215 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
216 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
217 .len = 20-1 },
218 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
219
220 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
221 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
222 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
223 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
224 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
225
226 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
227 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
228 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
229 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
230 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
231 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
232
233 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
234 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
235 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
236
237 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
238 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
239
240 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
241 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
242 .len = WLAN_MAX_KEY_LEN },
243 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
244 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
245 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
246 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
247 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
248
249 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
250 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
251 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
254 .len = IEEE80211_MAX_DATA_LEN },
255 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
257 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
258 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
259 .len = NL80211_MAX_SUPP_RATES },
260 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
261 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
262 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
263 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
264 .len = IEEE80211_MAX_MESH_ID_LEN },
265 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
266
267 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
268 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
269
270 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
272 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
273 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
274 .len = NL80211_MAX_SUPP_RATES },
275 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
276
277 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
278 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
279
280 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
281
282 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
283 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
284 .len = IEEE80211_MAX_DATA_LEN },
285 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
286 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
287
288 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
289 .len = IEEE80211_MAX_SSID_LEN },
290 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
291 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
292 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
293 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
294 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
295 [NL80211_ATTR_STA_FLAGS2] = {
296 .len = sizeof(struct nl80211_sta_flag_update),
297 },
298 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
300 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
301 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
302 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
303 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
304 [NL80211_ATTR_PID] = { .type = NLA_U32 },
305 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
306 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
307 .len = WLAN_PMKID_LEN },
308 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
309 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
310 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
311 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
312 .len = IEEE80211_MAX_DATA_LEN },
313 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
314 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
315 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
316 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
317 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
318 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
319 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
320 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
321 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
322 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
323 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
324 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
325 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
326 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
327 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
328 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
329 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
330 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
331 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
332 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
335 .len = IEEE80211_MAX_DATA_LEN },
336 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
337 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
338 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
339 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
341 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
342 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
343 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
344 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
345 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
346 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
347 .len = IEEE80211_MAX_DATA_LEN },
348 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
349 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
350 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
351 .len = NL80211_HT_CAPABILITY_LEN
352 },
353 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
354 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
355 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
356 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
357 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
358 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
359 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
360 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
361 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
362 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
363 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
364 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
365 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
366 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
367 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
368 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
369 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
370 .len = NL80211_VHT_CAPABILITY_LEN,
371 },
372 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
373 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
374 .len = IEEE80211_MAX_DATA_LEN },
375 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
376 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
377 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
378 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
379 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
380 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
381 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
382 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
383 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
384 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
385 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
386 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
387 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
388 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
389 .len = IEEE80211_QOS_MAP_LEN_MAX },
390 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
391 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
392 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
393 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
394 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
395 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
396 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
397 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
398 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
399 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
400 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
401 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
402 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
403 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
404 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
405 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
406 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
407 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
408 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
409 .len = VHT_MUMIMO_GROUPS_DATA_LEN
410 },
411 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
412 };
413
414 /* policy for the key attributes */
415 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
416 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
417 [NL80211_KEY_IDX] = { .type = NLA_U8 },
418 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
419 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
420 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
421 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
422 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
423 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
424 };
425
426 /* policy for the key default flags */
427 static const struct nla_policy
428 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
429 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
430 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
431 };
432
433 /* policy for WoWLAN attributes */
434 static const struct nla_policy
435 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
436 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
437 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
438 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
439 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
440 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
441 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
442 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
443 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
444 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
445 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
446 };
447
448 static const struct nla_policy
449 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
450 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
451 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
452 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
453 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
454 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
455 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
456 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
457 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
458 },
459 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
460 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
461 },
462 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
463 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
464 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
465 };
466
467 /* policy for coalesce rule attributes */
468 static const struct nla_policy
469 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
470 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
471 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
472 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
473 };
474
475 /* policy for GTK rekey offload attributes */
476 static const struct nla_policy
477 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
478 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
479 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
480 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
481 };
482
483 static const struct nla_policy
484 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
485 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
486 .len = IEEE80211_MAX_SSID_LEN },
487 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
488 };
489
490 static const struct nla_policy
491 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
492 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
493 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
494 };
495
496 static const struct nla_policy
497 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
498 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
499 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
500 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
501 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
502 },
503 };
504
505 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
506 struct netlink_callback *cb,
507 struct cfg80211_registered_device **rdev,
508 struct wireless_dev **wdev)
509 {
510 int err;
511
512 rtnl_lock();
513
514 if (!cb->args[0]) {
515 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
516 nl80211_fam.attrbuf, nl80211_fam.maxattr,
517 nl80211_policy);
518 if (err)
519 goto out_unlock;
520
521 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
522 nl80211_fam.attrbuf);
523 if (IS_ERR(*wdev)) {
524 err = PTR_ERR(*wdev);
525 goto out_unlock;
526 }
527 *rdev = wiphy_to_rdev((*wdev)->wiphy);
528 /* 0 is the first index - add 1 to parse only once */
529 cb->args[0] = (*rdev)->wiphy_idx + 1;
530 cb->args[1] = (*wdev)->identifier;
531 } else {
532 /* subtract the 1 again here */
533 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
534 struct wireless_dev *tmp;
535
536 if (!wiphy) {
537 err = -ENODEV;
538 goto out_unlock;
539 }
540 *rdev = wiphy_to_rdev(wiphy);
541 *wdev = NULL;
542
543 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
544 if (tmp->identifier == cb->args[1]) {
545 *wdev = tmp;
546 break;
547 }
548 }
549
550 if (!*wdev) {
551 err = -ENODEV;
552 goto out_unlock;
553 }
554 }
555
556 return 0;
557 out_unlock:
558 rtnl_unlock();
559 return err;
560 }
561
562 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
563 {
564 rtnl_unlock();
565 }
566
567 /* IE validation */
568 static bool is_valid_ie_attr(const struct nlattr *attr)
569 {
570 const u8 *pos;
571 int len;
572
573 if (!attr)
574 return true;
575
576 pos = nla_data(attr);
577 len = nla_len(attr);
578
579 while (len) {
580 u8 elemlen;
581
582 if (len < 2)
583 return false;
584 len -= 2;
585
586 elemlen = pos[1];
587 if (elemlen > len)
588 return false;
589
590 len -= elemlen;
591 pos += 2 + elemlen;
592 }
593
594 return true;
595 }
596
597 /* message building helper */
598 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
599 int flags, u8 cmd)
600 {
601 /* since there is no private header just add the generic one */
602 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
603 }
604
605 static int nl80211_msg_put_channel(struct sk_buff *msg,
606 struct ieee80211_channel *chan,
607 bool large)
608 {
609 /* Some channels must be completely excluded from the
610 * list to protect old user-space tools from breaking
611 */
612 if (!large && chan->flags &
613 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
614 return 0;
615
616 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
617 chan->center_freq))
618 goto nla_put_failure;
619
620 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
621 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
622 goto nla_put_failure;
623 if (chan->flags & IEEE80211_CHAN_NO_IR) {
624 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
625 goto nla_put_failure;
626 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
627 goto nla_put_failure;
628 }
629 if (chan->flags & IEEE80211_CHAN_RADAR) {
630 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
631 goto nla_put_failure;
632 if (large) {
633 u32 time;
634
635 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
636
637 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
638 chan->dfs_state))
639 goto nla_put_failure;
640 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
641 time))
642 goto nla_put_failure;
643 if (nla_put_u32(msg,
644 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
645 chan->dfs_cac_ms))
646 goto nla_put_failure;
647 }
648 }
649
650 if (large) {
651 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
652 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
653 goto nla_put_failure;
654 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
655 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
656 goto nla_put_failure;
657 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
658 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
659 goto nla_put_failure;
660 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
661 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
662 goto nla_put_failure;
663 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
664 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
665 goto nla_put_failure;
666 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
667 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
668 goto nla_put_failure;
669 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
670 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
671 goto nla_put_failure;
672 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
673 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
674 goto nla_put_failure;
675 }
676
677 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
678 DBM_TO_MBM(chan->max_power)))
679 goto nla_put_failure;
680
681 return 0;
682
683 nla_put_failure:
684 return -ENOBUFS;
685 }
686
687 /* netlink command implementations */
688
689 struct key_parse {
690 struct key_params p;
691 int idx;
692 int type;
693 bool def, defmgmt;
694 bool def_uni, def_multi;
695 };
696
697 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
698 {
699 struct nlattr *tb[NL80211_KEY_MAX + 1];
700 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
701 nl80211_key_policy);
702 if (err)
703 return err;
704
705 k->def = !!tb[NL80211_KEY_DEFAULT];
706 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
707
708 if (k->def) {
709 k->def_uni = true;
710 k->def_multi = true;
711 }
712 if (k->defmgmt)
713 k->def_multi = true;
714
715 if (tb[NL80211_KEY_IDX])
716 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
717
718 if (tb[NL80211_KEY_DATA]) {
719 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
720 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
721 }
722
723 if (tb[NL80211_KEY_SEQ]) {
724 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
725 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
726 }
727
728 if (tb[NL80211_KEY_CIPHER])
729 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
730
731 if (tb[NL80211_KEY_TYPE]) {
732 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
733 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
734 return -EINVAL;
735 }
736
737 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
738 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
739
740 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
741 tb[NL80211_KEY_DEFAULT_TYPES],
742 nl80211_key_default_policy);
743 if (err)
744 return err;
745
746 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
747 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
748 }
749
750 return 0;
751 }
752
753 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
754 {
755 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
756 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
757 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
758 }
759
760 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
761 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
762 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
763 }
764
765 if (info->attrs[NL80211_ATTR_KEY_IDX])
766 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
767
768 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
769 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
770
771 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
772 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
773
774 if (k->def) {
775 k->def_uni = true;
776 k->def_multi = true;
777 }
778 if (k->defmgmt)
779 k->def_multi = true;
780
781 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
782 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
783 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
784 return -EINVAL;
785 }
786
787 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
788 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
789 int err = nla_parse_nested(
790 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
791 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
792 nl80211_key_default_policy);
793 if (err)
794 return err;
795
796 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
797 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
798 }
799
800 return 0;
801 }
802
803 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
804 {
805 int err;
806
807 memset(k, 0, sizeof(*k));
808 k->idx = -1;
809 k->type = -1;
810
811 if (info->attrs[NL80211_ATTR_KEY])
812 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
813 else
814 err = nl80211_parse_key_old(info, k);
815
816 if (err)
817 return err;
818
819 if (k->def && k->defmgmt)
820 return -EINVAL;
821
822 if (k->defmgmt) {
823 if (k->def_uni || !k->def_multi)
824 return -EINVAL;
825 }
826
827 if (k->idx != -1) {
828 if (k->defmgmt) {
829 if (k->idx < 4 || k->idx > 5)
830 return -EINVAL;
831 } else if (k->def) {
832 if (k->idx < 0 || k->idx > 3)
833 return -EINVAL;
834 } else {
835 if (k->idx < 0 || k->idx > 5)
836 return -EINVAL;
837 }
838 }
839
840 return 0;
841 }
842
843 static struct cfg80211_cached_keys *
844 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
845 struct nlattr *keys, bool *no_ht)
846 {
847 struct key_parse parse;
848 struct nlattr *key;
849 struct cfg80211_cached_keys *result;
850 int rem, err, def = 0;
851
852 result = kzalloc(sizeof(*result), GFP_KERNEL);
853 if (!result)
854 return ERR_PTR(-ENOMEM);
855
856 result->def = -1;
857 result->defmgmt = -1;
858
859 nla_for_each_nested(key, keys, rem) {
860 memset(&parse, 0, sizeof(parse));
861 parse.idx = -1;
862
863 err = nl80211_parse_key_new(key, &parse);
864 if (err)
865 goto error;
866 err = -EINVAL;
867 if (!parse.p.key)
868 goto error;
869 if (parse.idx < 0 || parse.idx > 4)
870 goto error;
871 if (parse.def) {
872 if (def)
873 goto error;
874 def = 1;
875 result->def = parse.idx;
876 if (!parse.def_uni || !parse.def_multi)
877 goto error;
878 } else if (parse.defmgmt)
879 goto error;
880 err = cfg80211_validate_key_settings(rdev, &parse.p,
881 parse.idx, false, NULL);
882 if (err)
883 goto error;
884 result->params[parse.idx].cipher = parse.p.cipher;
885 result->params[parse.idx].key_len = parse.p.key_len;
886 result->params[parse.idx].key = result->data[parse.idx];
887 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
888
889 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
890 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
891 if (no_ht)
892 *no_ht = true;
893 }
894 }
895
896 return result;
897 error:
898 kfree(result);
899 return ERR_PTR(err);
900 }
901
902 static int nl80211_key_allowed(struct wireless_dev *wdev)
903 {
904 ASSERT_WDEV_LOCK(wdev);
905
906 switch (wdev->iftype) {
907 case NL80211_IFTYPE_AP:
908 case NL80211_IFTYPE_AP_VLAN:
909 case NL80211_IFTYPE_P2P_GO:
910 case NL80211_IFTYPE_MESH_POINT:
911 break;
912 case NL80211_IFTYPE_ADHOC:
913 case NL80211_IFTYPE_STATION:
914 case NL80211_IFTYPE_P2P_CLIENT:
915 if (!wdev->current_bss)
916 return -ENOLINK;
917 break;
918 case NL80211_IFTYPE_UNSPECIFIED:
919 case NL80211_IFTYPE_OCB:
920 case NL80211_IFTYPE_MONITOR:
921 case NL80211_IFTYPE_P2P_DEVICE:
922 case NL80211_IFTYPE_WDS:
923 case NUM_NL80211_IFTYPES:
924 return -EINVAL;
925 }
926
927 return 0;
928 }
929
930 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
931 struct nlattr *tb)
932 {
933 struct ieee80211_channel *chan;
934
935 if (tb == NULL)
936 return NULL;
937 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
938 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
939 return NULL;
940 return chan;
941 }
942
943 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
944 {
945 struct nlattr *nl_modes = nla_nest_start(msg, attr);
946 int i;
947
948 if (!nl_modes)
949 goto nla_put_failure;
950
951 i = 0;
952 while (ifmodes) {
953 if ((ifmodes & 1) && nla_put_flag(msg, i))
954 goto nla_put_failure;
955 ifmodes >>= 1;
956 i++;
957 }
958
959 nla_nest_end(msg, nl_modes);
960 return 0;
961
962 nla_put_failure:
963 return -ENOBUFS;
964 }
965
966 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
967 struct sk_buff *msg,
968 bool large)
969 {
970 struct nlattr *nl_combis;
971 int i, j;
972
973 nl_combis = nla_nest_start(msg,
974 NL80211_ATTR_INTERFACE_COMBINATIONS);
975 if (!nl_combis)
976 goto nla_put_failure;
977
978 for (i = 0; i < wiphy->n_iface_combinations; i++) {
979 const struct ieee80211_iface_combination *c;
980 struct nlattr *nl_combi, *nl_limits;
981
982 c = &wiphy->iface_combinations[i];
983
984 nl_combi = nla_nest_start(msg, i + 1);
985 if (!nl_combi)
986 goto nla_put_failure;
987
988 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
989 if (!nl_limits)
990 goto nla_put_failure;
991
992 for (j = 0; j < c->n_limits; j++) {
993 struct nlattr *nl_limit;
994
995 nl_limit = nla_nest_start(msg, j + 1);
996 if (!nl_limit)
997 goto nla_put_failure;
998 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
999 c->limits[j].max))
1000 goto nla_put_failure;
1001 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1002 c->limits[j].types))
1003 goto nla_put_failure;
1004 nla_nest_end(msg, nl_limit);
1005 }
1006
1007 nla_nest_end(msg, nl_limits);
1008
1009 if (c->beacon_int_infra_match &&
1010 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1011 goto nla_put_failure;
1012 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1013 c->num_different_channels) ||
1014 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1015 c->max_interfaces))
1016 goto nla_put_failure;
1017 if (large &&
1018 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1019 c->radar_detect_widths) ||
1020 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1021 c->radar_detect_regions)))
1022 goto nla_put_failure;
1023
1024 nla_nest_end(msg, nl_combi);
1025 }
1026
1027 nla_nest_end(msg, nl_combis);
1028
1029 return 0;
1030 nla_put_failure:
1031 return -ENOBUFS;
1032 }
1033
1034 #ifdef CONFIG_PM
1035 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1036 struct sk_buff *msg)
1037 {
1038 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1039 struct nlattr *nl_tcp;
1040
1041 if (!tcp)
1042 return 0;
1043
1044 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1045 if (!nl_tcp)
1046 return -ENOBUFS;
1047
1048 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1049 tcp->data_payload_max))
1050 return -ENOBUFS;
1051
1052 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1053 tcp->data_payload_max))
1054 return -ENOBUFS;
1055
1056 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1057 return -ENOBUFS;
1058
1059 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1060 sizeof(*tcp->tok), tcp->tok))
1061 return -ENOBUFS;
1062
1063 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1064 tcp->data_interval_max))
1065 return -ENOBUFS;
1066
1067 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1068 tcp->wake_payload_max))
1069 return -ENOBUFS;
1070
1071 nla_nest_end(msg, nl_tcp);
1072 return 0;
1073 }
1074
1075 static int nl80211_send_wowlan(struct sk_buff *msg,
1076 struct cfg80211_registered_device *rdev,
1077 bool large)
1078 {
1079 struct nlattr *nl_wowlan;
1080
1081 if (!rdev->wiphy.wowlan)
1082 return 0;
1083
1084 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1085 if (!nl_wowlan)
1086 return -ENOBUFS;
1087
1088 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1089 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1090 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1091 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1092 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1093 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1094 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1095 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1096 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1097 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1098 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1099 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1100 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1101 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1102 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1103 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1104 return -ENOBUFS;
1105
1106 if (rdev->wiphy.wowlan->n_patterns) {
1107 struct nl80211_pattern_support pat = {
1108 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1109 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1110 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1111 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1112 };
1113
1114 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1115 sizeof(pat), &pat))
1116 return -ENOBUFS;
1117 }
1118
1119 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1120 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1121 rdev->wiphy.wowlan->max_nd_match_sets))
1122 return -ENOBUFS;
1123
1124 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1125 return -ENOBUFS;
1126
1127 nla_nest_end(msg, nl_wowlan);
1128
1129 return 0;
1130 }
1131 #endif
1132
1133 static int nl80211_send_coalesce(struct sk_buff *msg,
1134 struct cfg80211_registered_device *rdev)
1135 {
1136 struct nl80211_coalesce_rule_support rule;
1137
1138 if (!rdev->wiphy.coalesce)
1139 return 0;
1140
1141 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1142 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1143 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1144 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1145 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1146 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1147
1148 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1149 return -ENOBUFS;
1150
1151 return 0;
1152 }
1153
1154 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1155 struct ieee80211_supported_band *sband)
1156 {
1157 struct nlattr *nl_rates, *nl_rate;
1158 struct ieee80211_rate *rate;
1159 int i;
1160
1161 /* add HT info */
1162 if (sband->ht_cap.ht_supported &&
1163 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1164 sizeof(sband->ht_cap.mcs),
1165 &sband->ht_cap.mcs) ||
1166 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1167 sband->ht_cap.cap) ||
1168 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1169 sband->ht_cap.ampdu_factor) ||
1170 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1171 sband->ht_cap.ampdu_density)))
1172 return -ENOBUFS;
1173
1174 /* add VHT info */
1175 if (sband->vht_cap.vht_supported &&
1176 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1177 sizeof(sband->vht_cap.vht_mcs),
1178 &sband->vht_cap.vht_mcs) ||
1179 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1180 sband->vht_cap.cap)))
1181 return -ENOBUFS;
1182
1183 /* add bitrates */
1184 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1185 if (!nl_rates)
1186 return -ENOBUFS;
1187
1188 for (i = 0; i < sband->n_bitrates; i++) {
1189 nl_rate = nla_nest_start(msg, i);
1190 if (!nl_rate)
1191 return -ENOBUFS;
1192
1193 rate = &sband->bitrates[i];
1194 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1195 rate->bitrate))
1196 return -ENOBUFS;
1197 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1198 nla_put_flag(msg,
1199 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1200 return -ENOBUFS;
1201
1202 nla_nest_end(msg, nl_rate);
1203 }
1204
1205 nla_nest_end(msg, nl_rates);
1206
1207 return 0;
1208 }
1209
1210 static int
1211 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1212 const struct ieee80211_txrx_stypes *mgmt_stypes)
1213 {
1214 u16 stypes;
1215 struct nlattr *nl_ftypes, *nl_ifs;
1216 enum nl80211_iftype ift;
1217 int i;
1218
1219 if (!mgmt_stypes)
1220 return 0;
1221
1222 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1223 if (!nl_ifs)
1224 return -ENOBUFS;
1225
1226 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1227 nl_ftypes = nla_nest_start(msg, ift);
1228 if (!nl_ftypes)
1229 return -ENOBUFS;
1230 i = 0;
1231 stypes = mgmt_stypes[ift].tx;
1232 while (stypes) {
1233 if ((stypes & 1) &&
1234 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1235 (i << 4) | IEEE80211_FTYPE_MGMT))
1236 return -ENOBUFS;
1237 stypes >>= 1;
1238 i++;
1239 }
1240 nla_nest_end(msg, nl_ftypes);
1241 }
1242
1243 nla_nest_end(msg, nl_ifs);
1244
1245 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1246 if (!nl_ifs)
1247 return -ENOBUFS;
1248
1249 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1250 nl_ftypes = nla_nest_start(msg, ift);
1251 if (!nl_ftypes)
1252 return -ENOBUFS;
1253 i = 0;
1254 stypes = mgmt_stypes[ift].rx;
1255 while (stypes) {
1256 if ((stypes & 1) &&
1257 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1258 (i << 4) | IEEE80211_FTYPE_MGMT))
1259 return -ENOBUFS;
1260 stypes >>= 1;
1261 i++;
1262 }
1263 nla_nest_end(msg, nl_ftypes);
1264 }
1265 nla_nest_end(msg, nl_ifs);
1266
1267 return 0;
1268 }
1269
1270 struct nl80211_dump_wiphy_state {
1271 s64 filter_wiphy;
1272 long start;
1273 long split_start, band_start, chan_start, capa_start;
1274 bool split;
1275 };
1276
1277 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1278 enum nl80211_commands cmd,
1279 struct sk_buff *msg, u32 portid, u32 seq,
1280 int flags, struct nl80211_dump_wiphy_state *state)
1281 {
1282 void *hdr;
1283 struct nlattr *nl_bands, *nl_band;
1284 struct nlattr *nl_freqs, *nl_freq;
1285 struct nlattr *nl_cmds;
1286 enum nl80211_band band;
1287 struct ieee80211_channel *chan;
1288 int i;
1289 const struct ieee80211_txrx_stypes *mgmt_stypes =
1290 rdev->wiphy.mgmt_stypes;
1291 u32 features;
1292
1293 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1294 if (!hdr)
1295 return -ENOBUFS;
1296
1297 if (WARN_ON(!state))
1298 return -EINVAL;
1299
1300 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1301 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1302 wiphy_name(&rdev->wiphy)) ||
1303 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1304 cfg80211_rdev_list_generation))
1305 goto nla_put_failure;
1306
1307 if (cmd != NL80211_CMD_NEW_WIPHY)
1308 goto finish;
1309
1310 switch (state->split_start) {
1311 case 0:
1312 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1313 rdev->wiphy.retry_short) ||
1314 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1315 rdev->wiphy.retry_long) ||
1316 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1317 rdev->wiphy.frag_threshold) ||
1318 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1319 rdev->wiphy.rts_threshold) ||
1320 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1321 rdev->wiphy.coverage_class) ||
1322 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1323 rdev->wiphy.max_scan_ssids) ||
1324 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1325 rdev->wiphy.max_sched_scan_ssids) ||
1326 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1327 rdev->wiphy.max_scan_ie_len) ||
1328 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1329 rdev->wiphy.max_sched_scan_ie_len) ||
1330 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1331 rdev->wiphy.max_match_sets) ||
1332 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1333 rdev->wiphy.max_sched_scan_plans) ||
1334 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1335 rdev->wiphy.max_sched_scan_plan_interval) ||
1336 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1337 rdev->wiphy.max_sched_scan_plan_iterations))
1338 goto nla_put_failure;
1339
1340 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1341 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1342 goto nla_put_failure;
1343 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1344 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1345 goto nla_put_failure;
1346 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1347 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1348 goto nla_put_failure;
1349 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1350 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1351 goto nla_put_failure;
1352 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1353 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1354 goto nla_put_failure;
1355 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1356 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1357 goto nla_put_failure;
1358 state->split_start++;
1359 if (state->split)
1360 break;
1361 case 1:
1362 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1363 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1364 rdev->wiphy.cipher_suites))
1365 goto nla_put_failure;
1366
1367 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1368 rdev->wiphy.max_num_pmkids))
1369 goto nla_put_failure;
1370
1371 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1372 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1373 goto nla_put_failure;
1374
1375 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1376 rdev->wiphy.available_antennas_tx) ||
1377 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1378 rdev->wiphy.available_antennas_rx))
1379 goto nla_put_failure;
1380
1381 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1382 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1383 rdev->wiphy.probe_resp_offload))
1384 goto nla_put_failure;
1385
1386 if ((rdev->wiphy.available_antennas_tx ||
1387 rdev->wiphy.available_antennas_rx) &&
1388 rdev->ops->get_antenna) {
1389 u32 tx_ant = 0, rx_ant = 0;
1390 int res;
1391
1392 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1393 if (!res) {
1394 if (nla_put_u32(msg,
1395 NL80211_ATTR_WIPHY_ANTENNA_TX,
1396 tx_ant) ||
1397 nla_put_u32(msg,
1398 NL80211_ATTR_WIPHY_ANTENNA_RX,
1399 rx_ant))
1400 goto nla_put_failure;
1401 }
1402 }
1403
1404 state->split_start++;
1405 if (state->split)
1406 break;
1407 case 2:
1408 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1409 rdev->wiphy.interface_modes))
1410 goto nla_put_failure;
1411 state->split_start++;
1412 if (state->split)
1413 break;
1414 case 3:
1415 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1416 if (!nl_bands)
1417 goto nla_put_failure;
1418
1419 for (band = state->band_start;
1420 band < NUM_NL80211_BANDS; band++) {
1421 struct ieee80211_supported_band *sband;
1422
1423 sband = rdev->wiphy.bands[band];
1424
1425 if (!sband)
1426 continue;
1427
1428 nl_band = nla_nest_start(msg, band);
1429 if (!nl_band)
1430 goto nla_put_failure;
1431
1432 switch (state->chan_start) {
1433 case 0:
1434 if (nl80211_send_band_rateinfo(msg, sband))
1435 goto nla_put_failure;
1436 state->chan_start++;
1437 if (state->split)
1438 break;
1439 default:
1440 /* add frequencies */
1441 nl_freqs = nla_nest_start(
1442 msg, NL80211_BAND_ATTR_FREQS);
1443 if (!nl_freqs)
1444 goto nla_put_failure;
1445
1446 for (i = state->chan_start - 1;
1447 i < sband->n_channels;
1448 i++) {
1449 nl_freq = nla_nest_start(msg, i);
1450 if (!nl_freq)
1451 goto nla_put_failure;
1452
1453 chan = &sband->channels[i];
1454
1455 if (nl80211_msg_put_channel(
1456 msg, chan,
1457 state->split))
1458 goto nla_put_failure;
1459
1460 nla_nest_end(msg, nl_freq);
1461 if (state->split)
1462 break;
1463 }
1464 if (i < sband->n_channels)
1465 state->chan_start = i + 2;
1466 else
1467 state->chan_start = 0;
1468 nla_nest_end(msg, nl_freqs);
1469 }
1470
1471 nla_nest_end(msg, nl_band);
1472
1473 if (state->split) {
1474 /* start again here */
1475 if (state->chan_start)
1476 band--;
1477 break;
1478 }
1479 }
1480 nla_nest_end(msg, nl_bands);
1481
1482 if (band < NUM_NL80211_BANDS)
1483 state->band_start = band + 1;
1484 else
1485 state->band_start = 0;
1486
1487 /* if bands & channels are done, continue outside */
1488 if (state->band_start == 0 && state->chan_start == 0)
1489 state->split_start++;
1490 if (state->split)
1491 break;
1492 case 4:
1493 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1494 if (!nl_cmds)
1495 goto nla_put_failure;
1496
1497 i = 0;
1498 #define CMD(op, n) \
1499 do { \
1500 if (rdev->ops->op) { \
1501 i++; \
1502 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1503 goto nla_put_failure; \
1504 } \
1505 } while (0)
1506
1507 CMD(add_virtual_intf, NEW_INTERFACE);
1508 CMD(change_virtual_intf, SET_INTERFACE);
1509 CMD(add_key, NEW_KEY);
1510 CMD(start_ap, START_AP);
1511 CMD(add_station, NEW_STATION);
1512 CMD(add_mpath, NEW_MPATH);
1513 CMD(update_mesh_config, SET_MESH_CONFIG);
1514 CMD(change_bss, SET_BSS);
1515 CMD(auth, AUTHENTICATE);
1516 CMD(assoc, ASSOCIATE);
1517 CMD(deauth, DEAUTHENTICATE);
1518 CMD(disassoc, DISASSOCIATE);
1519 CMD(join_ibss, JOIN_IBSS);
1520 CMD(join_mesh, JOIN_MESH);
1521 CMD(set_pmksa, SET_PMKSA);
1522 CMD(del_pmksa, DEL_PMKSA);
1523 CMD(flush_pmksa, FLUSH_PMKSA);
1524 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1525 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1526 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1527 CMD(mgmt_tx, FRAME);
1528 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1529 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1530 i++;
1531 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1532 goto nla_put_failure;
1533 }
1534 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1535 rdev->ops->join_mesh) {
1536 i++;
1537 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1538 goto nla_put_failure;
1539 }
1540 CMD(set_wds_peer, SET_WDS_PEER);
1541 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1542 CMD(tdls_mgmt, TDLS_MGMT);
1543 CMD(tdls_oper, TDLS_OPER);
1544 }
1545 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1546 CMD(sched_scan_start, START_SCHED_SCAN);
1547 CMD(probe_client, PROBE_CLIENT);
1548 CMD(set_noack_map, SET_NOACK_MAP);
1549 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1550 i++;
1551 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1552 goto nla_put_failure;
1553 }
1554 CMD(start_p2p_device, START_P2P_DEVICE);
1555 CMD(set_mcast_rate, SET_MCAST_RATE);
1556 #ifdef CONFIG_NL80211_TESTMODE
1557 CMD(testmode_cmd, TESTMODE);
1558 #endif
1559 if (state->split) {
1560 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1561 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1562 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1563 CMD(channel_switch, CHANNEL_SWITCH);
1564 CMD(set_qos_map, SET_QOS_MAP);
1565 if (rdev->wiphy.features &
1566 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1567 CMD(add_tx_ts, ADD_TX_TS);
1568 }
1569 /* add into the if now */
1570 #undef CMD
1571
1572 if (rdev->ops->connect || rdev->ops->auth) {
1573 i++;
1574 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1575 goto nla_put_failure;
1576 }
1577
1578 if (rdev->ops->disconnect || rdev->ops->deauth) {
1579 i++;
1580 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1581 goto nla_put_failure;
1582 }
1583
1584 nla_nest_end(msg, nl_cmds);
1585 state->split_start++;
1586 if (state->split)
1587 break;
1588 case 5:
1589 if (rdev->ops->remain_on_channel &&
1590 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1591 nla_put_u32(msg,
1592 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1593 rdev->wiphy.max_remain_on_channel_duration))
1594 goto nla_put_failure;
1595
1596 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1597 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1598 goto nla_put_failure;
1599
1600 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1601 goto nla_put_failure;
1602 state->split_start++;
1603 if (state->split)
1604 break;
1605 case 6:
1606 #ifdef CONFIG_PM
1607 if (nl80211_send_wowlan(msg, rdev, state->split))
1608 goto nla_put_failure;
1609 state->split_start++;
1610 if (state->split)
1611 break;
1612 #else
1613 state->split_start++;
1614 #endif
1615 case 7:
1616 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1617 rdev->wiphy.software_iftypes))
1618 goto nla_put_failure;
1619
1620 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1621 state->split))
1622 goto nla_put_failure;
1623
1624 state->split_start++;
1625 if (state->split)
1626 break;
1627 case 8:
1628 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1629 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1630 rdev->wiphy.ap_sme_capa))
1631 goto nla_put_failure;
1632
1633 features = rdev->wiphy.features;
1634 /*
1635 * We can only add the per-channel limit information if the
1636 * dump is split, otherwise it makes it too big. Therefore
1637 * only advertise it in that case.
1638 */
1639 if (state->split)
1640 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1641 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1642 goto nla_put_failure;
1643
1644 if (rdev->wiphy.ht_capa_mod_mask &&
1645 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1646 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1647 rdev->wiphy.ht_capa_mod_mask))
1648 goto nla_put_failure;
1649
1650 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1651 rdev->wiphy.max_acl_mac_addrs &&
1652 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1653 rdev->wiphy.max_acl_mac_addrs))
1654 goto nla_put_failure;
1655
1656 /*
1657 * Any information below this point is only available to
1658 * applications that can deal with it being split. This
1659 * helps ensure that newly added capabilities don't break
1660 * older tools by overrunning their buffers.
1661 *
1662 * We still increment split_start so that in the split
1663 * case we'll continue with more data in the next round,
1664 * but break unconditionally so unsplit data stops here.
1665 */
1666 state->split_start++;
1667 break;
1668 case 9:
1669 if (rdev->wiphy.extended_capabilities &&
1670 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1671 rdev->wiphy.extended_capabilities_len,
1672 rdev->wiphy.extended_capabilities) ||
1673 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1674 rdev->wiphy.extended_capabilities_len,
1675 rdev->wiphy.extended_capabilities_mask)))
1676 goto nla_put_failure;
1677
1678 if (rdev->wiphy.vht_capa_mod_mask &&
1679 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1680 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1681 rdev->wiphy.vht_capa_mod_mask))
1682 goto nla_put_failure;
1683
1684 state->split_start++;
1685 break;
1686 case 10:
1687 if (nl80211_send_coalesce(msg, rdev))
1688 goto nla_put_failure;
1689
1690 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1691 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1692 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1693 goto nla_put_failure;
1694
1695 if (rdev->wiphy.max_ap_assoc_sta &&
1696 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1697 rdev->wiphy.max_ap_assoc_sta))
1698 goto nla_put_failure;
1699
1700 state->split_start++;
1701 break;
1702 case 11:
1703 if (rdev->wiphy.n_vendor_commands) {
1704 const struct nl80211_vendor_cmd_info *info;
1705 struct nlattr *nested;
1706
1707 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1708 if (!nested)
1709 goto nla_put_failure;
1710
1711 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1712 info = &rdev->wiphy.vendor_commands[i].info;
1713 if (nla_put(msg, i + 1, sizeof(*info), info))
1714 goto nla_put_failure;
1715 }
1716 nla_nest_end(msg, nested);
1717 }
1718
1719 if (rdev->wiphy.n_vendor_events) {
1720 const struct nl80211_vendor_cmd_info *info;
1721 struct nlattr *nested;
1722
1723 nested = nla_nest_start(msg,
1724 NL80211_ATTR_VENDOR_EVENTS);
1725 if (!nested)
1726 goto nla_put_failure;
1727
1728 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1729 info = &rdev->wiphy.vendor_events[i];
1730 if (nla_put(msg, i + 1, sizeof(*info), info))
1731 goto nla_put_failure;
1732 }
1733 nla_nest_end(msg, nested);
1734 }
1735 state->split_start++;
1736 break;
1737 case 12:
1738 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1739 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1740 rdev->wiphy.max_num_csa_counters))
1741 goto nla_put_failure;
1742
1743 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1744 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1745 goto nla_put_failure;
1746
1747 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1748 sizeof(rdev->wiphy.ext_features),
1749 rdev->wiphy.ext_features))
1750 goto nla_put_failure;
1751
1752 if (rdev->wiphy.bss_select_support) {
1753 struct nlattr *nested;
1754 u32 bss_select_support = rdev->wiphy.bss_select_support;
1755
1756 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1757 if (!nested)
1758 goto nla_put_failure;
1759
1760 i = 0;
1761 while (bss_select_support) {
1762 if ((bss_select_support & 1) &&
1763 nla_put_flag(msg, i))
1764 goto nla_put_failure;
1765 i++;
1766 bss_select_support >>= 1;
1767 }
1768 nla_nest_end(msg, nested);
1769 }
1770
1771 state->split_start++;
1772 break;
1773 case 13:
1774 if (rdev->wiphy.num_iftype_ext_capab &&
1775 rdev->wiphy.iftype_ext_capab) {
1776 struct nlattr *nested_ext_capab, *nested;
1777
1778 nested = nla_nest_start(msg,
1779 NL80211_ATTR_IFTYPE_EXT_CAPA);
1780 if (!nested)
1781 goto nla_put_failure;
1782
1783 for (i = state->capa_start;
1784 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1785 const struct wiphy_iftype_ext_capab *capab;
1786
1787 capab = &rdev->wiphy.iftype_ext_capab[i];
1788
1789 nested_ext_capab = nla_nest_start(msg, i);
1790 if (!nested_ext_capab ||
1791 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1792 capab->iftype) ||
1793 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1794 capab->extended_capabilities_len,
1795 capab->extended_capabilities) ||
1796 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1797 capab->extended_capabilities_len,
1798 capab->extended_capabilities_mask))
1799 goto nla_put_failure;
1800
1801 nla_nest_end(msg, nested_ext_capab);
1802 if (state->split)
1803 break;
1804 }
1805 nla_nest_end(msg, nested);
1806 if (i < rdev->wiphy.num_iftype_ext_capab) {
1807 state->capa_start = i + 1;
1808 break;
1809 }
1810 }
1811
1812 /* done */
1813 state->split_start = 0;
1814 break;
1815 }
1816 finish:
1817 genlmsg_end(msg, hdr);
1818 return 0;
1819
1820 nla_put_failure:
1821 genlmsg_cancel(msg, hdr);
1822 return -EMSGSIZE;
1823 }
1824
1825 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1826 struct netlink_callback *cb,
1827 struct nl80211_dump_wiphy_state *state)
1828 {
1829 struct nlattr **tb = nl80211_fam.attrbuf;
1830 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1831 tb, nl80211_fam.maxattr, nl80211_policy);
1832 /* ignore parse errors for backward compatibility */
1833 if (ret)
1834 return 0;
1835
1836 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1837 if (tb[NL80211_ATTR_WIPHY])
1838 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1839 if (tb[NL80211_ATTR_WDEV])
1840 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1841 if (tb[NL80211_ATTR_IFINDEX]) {
1842 struct net_device *netdev;
1843 struct cfg80211_registered_device *rdev;
1844 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1845
1846 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1847 if (!netdev)
1848 return -ENODEV;
1849 if (netdev->ieee80211_ptr) {
1850 rdev = wiphy_to_rdev(
1851 netdev->ieee80211_ptr->wiphy);
1852 state->filter_wiphy = rdev->wiphy_idx;
1853 }
1854 }
1855
1856 return 0;
1857 }
1858
1859 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1860 {
1861 int idx = 0, ret;
1862 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1863 struct cfg80211_registered_device *rdev;
1864
1865 rtnl_lock();
1866 if (!state) {
1867 state = kzalloc(sizeof(*state), GFP_KERNEL);
1868 if (!state) {
1869 rtnl_unlock();
1870 return -ENOMEM;
1871 }
1872 state->filter_wiphy = -1;
1873 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1874 if (ret) {
1875 kfree(state);
1876 rtnl_unlock();
1877 return ret;
1878 }
1879 cb->args[0] = (long)state;
1880 }
1881
1882 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1883 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1884 continue;
1885 if (++idx <= state->start)
1886 continue;
1887 if (state->filter_wiphy != -1 &&
1888 state->filter_wiphy != rdev->wiphy_idx)
1889 continue;
1890 /* attempt to fit multiple wiphy data chunks into the skb */
1891 do {
1892 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1893 skb,
1894 NETLINK_CB(cb->skb).portid,
1895 cb->nlh->nlmsg_seq,
1896 NLM_F_MULTI, state);
1897 if (ret < 0) {
1898 /*
1899 * If sending the wiphy data didn't fit (ENOBUFS
1900 * or EMSGSIZE returned), this SKB is still
1901 * empty (so it's not too big because another
1902 * wiphy dataset is already in the skb) and
1903 * we've not tried to adjust the dump allocation
1904 * yet ... then adjust the alloc size to be
1905 * bigger, and return 1 but with the empty skb.
1906 * This results in an empty message being RX'ed
1907 * in userspace, but that is ignored.
1908 *
1909 * We can then retry with the larger buffer.
1910 */
1911 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1912 !skb->len && !state->split &&
1913 cb->min_dump_alloc < 4096) {
1914 cb->min_dump_alloc = 4096;
1915 state->split_start = 0;
1916 rtnl_unlock();
1917 return 1;
1918 }
1919 idx--;
1920 break;
1921 }
1922 } while (state->split_start > 0);
1923 break;
1924 }
1925 rtnl_unlock();
1926
1927 state->start = idx;
1928
1929 return skb->len;
1930 }
1931
1932 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1933 {
1934 kfree((void *)cb->args[0]);
1935 return 0;
1936 }
1937
1938 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1939 {
1940 struct sk_buff *msg;
1941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1942 struct nl80211_dump_wiphy_state state = {};
1943
1944 msg = nlmsg_new(4096, GFP_KERNEL);
1945 if (!msg)
1946 return -ENOMEM;
1947
1948 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1949 info->snd_portid, info->snd_seq, 0,
1950 &state) < 0) {
1951 nlmsg_free(msg);
1952 return -ENOBUFS;
1953 }
1954
1955 return genlmsg_reply(msg, info);
1956 }
1957
1958 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1959 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1960 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1961 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1962 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1963 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1964 };
1965
1966 static int parse_txq_params(struct nlattr *tb[],
1967 struct ieee80211_txq_params *txq_params)
1968 {
1969 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1970 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1971 !tb[NL80211_TXQ_ATTR_AIFS])
1972 return -EINVAL;
1973
1974 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1975 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1976 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1977 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1978 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1979
1980 if (txq_params->ac >= NL80211_NUM_ACS)
1981 return -EINVAL;
1982
1983 return 0;
1984 }
1985
1986 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1987 {
1988 /*
1989 * You can only set the channel explicitly for WDS interfaces,
1990 * all others have their channel managed via their respective
1991 * "establish a connection" command (connect, join, ...)
1992 *
1993 * For AP/GO and mesh mode, the channel can be set with the
1994 * channel userspace API, but is only stored and passed to the
1995 * low-level driver when the AP starts or the mesh is joined.
1996 * This is for backward compatibility, userspace can also give
1997 * the channel in the start-ap or join-mesh commands instead.
1998 *
1999 * Monitors are special as they are normally slaved to
2000 * whatever else is going on, so they have their own special
2001 * operation to set the monitor channel if possible.
2002 */
2003 return !wdev ||
2004 wdev->iftype == NL80211_IFTYPE_AP ||
2005 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2006 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2007 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2008 }
2009
2010 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2011 struct genl_info *info,
2012 struct cfg80211_chan_def *chandef)
2013 {
2014 u32 control_freq;
2015
2016 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2017 return -EINVAL;
2018
2019 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2020
2021 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2022 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2023 chandef->center_freq1 = control_freq;
2024 chandef->center_freq2 = 0;
2025
2026 /* Primary channel not allowed */
2027 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2028 return -EINVAL;
2029
2030 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2031 enum nl80211_channel_type chantype;
2032
2033 chantype = nla_get_u32(
2034 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2035
2036 switch (chantype) {
2037 case NL80211_CHAN_NO_HT:
2038 case NL80211_CHAN_HT20:
2039 case NL80211_CHAN_HT40PLUS:
2040 case NL80211_CHAN_HT40MINUS:
2041 cfg80211_chandef_create(chandef, chandef->chan,
2042 chantype);
2043 break;
2044 default:
2045 return -EINVAL;
2046 }
2047 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2048 chandef->width =
2049 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2050 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2051 chandef->center_freq1 =
2052 nla_get_u32(
2053 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2054 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2055 chandef->center_freq2 =
2056 nla_get_u32(
2057 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2058 }
2059
2060 if (!cfg80211_chandef_valid(chandef))
2061 return -EINVAL;
2062
2063 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2064 IEEE80211_CHAN_DISABLED))
2065 return -EINVAL;
2066
2067 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2068 chandef->width == NL80211_CHAN_WIDTH_10) &&
2069 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2070 return -EINVAL;
2071
2072 return 0;
2073 }
2074
2075 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2076 struct net_device *dev,
2077 struct genl_info *info)
2078 {
2079 struct cfg80211_chan_def chandef;
2080 int result;
2081 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2082 struct wireless_dev *wdev = NULL;
2083
2084 if (dev)
2085 wdev = dev->ieee80211_ptr;
2086 if (!nl80211_can_set_dev_channel(wdev))
2087 return -EOPNOTSUPP;
2088 if (wdev)
2089 iftype = wdev->iftype;
2090
2091 result = nl80211_parse_chandef(rdev, info, &chandef);
2092 if (result)
2093 return result;
2094
2095 switch (iftype) {
2096 case NL80211_IFTYPE_AP:
2097 case NL80211_IFTYPE_P2P_GO:
2098 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2099 iftype)) {
2100 result = -EINVAL;
2101 break;
2102 }
2103 if (wdev->beacon_interval) {
2104 if (!dev || !rdev->ops->set_ap_chanwidth ||
2105 !(rdev->wiphy.features &
2106 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2107 result = -EBUSY;
2108 break;
2109 }
2110
2111 /* Only allow dynamic channel width changes */
2112 if (chandef.chan != wdev->preset_chandef.chan) {
2113 result = -EBUSY;
2114 break;
2115 }
2116 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2117 if (result)
2118 break;
2119 }
2120 wdev->preset_chandef = chandef;
2121 result = 0;
2122 break;
2123 case NL80211_IFTYPE_MESH_POINT:
2124 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2125 break;
2126 case NL80211_IFTYPE_MONITOR:
2127 result = cfg80211_set_monitor_channel(rdev, &chandef);
2128 break;
2129 default:
2130 result = -EINVAL;
2131 }
2132
2133 return result;
2134 }
2135
2136 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2137 {
2138 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2139 struct net_device *netdev = info->user_ptr[1];
2140
2141 return __nl80211_set_channel(rdev, netdev, info);
2142 }
2143
2144 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2145 {
2146 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2147 struct net_device *dev = info->user_ptr[1];
2148 struct wireless_dev *wdev = dev->ieee80211_ptr;
2149 const u8 *bssid;
2150
2151 if (!info->attrs[NL80211_ATTR_MAC])
2152 return -EINVAL;
2153
2154 if (netif_running(dev))
2155 return -EBUSY;
2156
2157 if (!rdev->ops->set_wds_peer)
2158 return -EOPNOTSUPP;
2159
2160 if (wdev->iftype != NL80211_IFTYPE_WDS)
2161 return -EOPNOTSUPP;
2162
2163 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2164 return rdev_set_wds_peer(rdev, dev, bssid);
2165 }
2166
2167 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2168 {
2169 struct cfg80211_registered_device *rdev;
2170 struct net_device *netdev = NULL;
2171 struct wireless_dev *wdev;
2172 int result = 0, rem_txq_params = 0;
2173 struct nlattr *nl_txq_params;
2174 u32 changed;
2175 u8 retry_short = 0, retry_long = 0;
2176 u32 frag_threshold = 0, rts_threshold = 0;
2177 u8 coverage_class = 0;
2178
2179 ASSERT_RTNL();
2180
2181 /*
2182 * Try to find the wiphy and netdev. Normally this
2183 * function shouldn't need the netdev, but this is
2184 * done for backward compatibility -- previously
2185 * setting the channel was done per wiphy, but now
2186 * it is per netdev. Previous userland like hostapd
2187 * also passed a netdev to set_wiphy, so that it is
2188 * possible to let that go to the right netdev!
2189 */
2190
2191 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2192 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2193
2194 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2195 if (netdev && netdev->ieee80211_ptr)
2196 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2197 else
2198 netdev = NULL;
2199 }
2200
2201 if (!netdev) {
2202 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2203 info->attrs);
2204 if (IS_ERR(rdev))
2205 return PTR_ERR(rdev);
2206 wdev = NULL;
2207 netdev = NULL;
2208 result = 0;
2209 } else
2210 wdev = netdev->ieee80211_ptr;
2211
2212 /*
2213 * end workaround code, by now the rdev is available
2214 * and locked, and wdev may or may not be NULL.
2215 */
2216
2217 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2218 result = cfg80211_dev_rename(
2219 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2220
2221 if (result)
2222 return result;
2223
2224 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2225 struct ieee80211_txq_params txq_params;
2226 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2227
2228 if (!rdev->ops->set_txq_params)
2229 return -EOPNOTSUPP;
2230
2231 if (!netdev)
2232 return -EINVAL;
2233
2234 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2235 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2236 return -EINVAL;
2237
2238 if (!netif_running(netdev))
2239 return -ENETDOWN;
2240
2241 nla_for_each_nested(nl_txq_params,
2242 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2243 rem_txq_params) {
2244 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2245 nla_data(nl_txq_params),
2246 nla_len(nl_txq_params),
2247 txq_params_policy);
2248 if (result)
2249 return result;
2250 result = parse_txq_params(tb, &txq_params);
2251 if (result)
2252 return result;
2253
2254 result = rdev_set_txq_params(rdev, netdev,
2255 &txq_params);
2256 if (result)
2257 return result;
2258 }
2259 }
2260
2261 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2262 result = __nl80211_set_channel(
2263 rdev,
2264 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2265 info);
2266 if (result)
2267 return result;
2268 }
2269
2270 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2271 struct wireless_dev *txp_wdev = wdev;
2272 enum nl80211_tx_power_setting type;
2273 int idx, mbm = 0;
2274
2275 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2276 txp_wdev = NULL;
2277
2278 if (!rdev->ops->set_tx_power)
2279 return -EOPNOTSUPP;
2280
2281 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2282 type = nla_get_u32(info->attrs[idx]);
2283
2284 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2285 (type != NL80211_TX_POWER_AUTOMATIC))
2286 return -EINVAL;
2287
2288 if (type != NL80211_TX_POWER_AUTOMATIC) {
2289 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2290 mbm = nla_get_u32(info->attrs[idx]);
2291 }
2292
2293 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2294 if (result)
2295 return result;
2296 }
2297
2298 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2299 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2300 u32 tx_ant, rx_ant;
2301
2302 if ((!rdev->wiphy.available_antennas_tx &&
2303 !rdev->wiphy.available_antennas_rx) ||
2304 !rdev->ops->set_antenna)
2305 return -EOPNOTSUPP;
2306
2307 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2308 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2309
2310 /* reject antenna configurations which don't match the
2311 * available antenna masks, except for the "all" mask */
2312 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2313 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2314 return -EINVAL;
2315
2316 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2317 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2318
2319 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2320 if (result)
2321 return result;
2322 }
2323
2324 changed = 0;
2325
2326 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2327 retry_short = nla_get_u8(
2328 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2329 if (retry_short == 0)
2330 return -EINVAL;
2331
2332 changed |= WIPHY_PARAM_RETRY_SHORT;
2333 }
2334
2335 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2336 retry_long = nla_get_u8(
2337 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2338 if (retry_long == 0)
2339 return -EINVAL;
2340
2341 changed |= WIPHY_PARAM_RETRY_LONG;
2342 }
2343
2344 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2345 frag_threshold = nla_get_u32(
2346 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2347 if (frag_threshold < 256)
2348 return -EINVAL;
2349
2350 if (frag_threshold != (u32) -1) {
2351 /*
2352 * Fragments (apart from the last one) are required to
2353 * have even length. Make the fragmentation code
2354 * simpler by stripping LSB should someone try to use
2355 * odd threshold value.
2356 */
2357 frag_threshold &= ~0x1;
2358 }
2359 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2360 }
2361
2362 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2363 rts_threshold = nla_get_u32(
2364 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2365 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2366 }
2367
2368 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2369 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2370 return -EINVAL;
2371
2372 coverage_class = nla_get_u8(
2373 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2374 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2375 }
2376
2377 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2378 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2379 return -EOPNOTSUPP;
2380
2381 changed |= WIPHY_PARAM_DYN_ACK;
2382 }
2383
2384 if (changed) {
2385 u8 old_retry_short, old_retry_long;
2386 u32 old_frag_threshold, old_rts_threshold;
2387 u8 old_coverage_class;
2388
2389 if (!rdev->ops->set_wiphy_params)
2390 return -EOPNOTSUPP;
2391
2392 old_retry_short = rdev->wiphy.retry_short;
2393 old_retry_long = rdev->wiphy.retry_long;
2394 old_frag_threshold = rdev->wiphy.frag_threshold;
2395 old_rts_threshold = rdev->wiphy.rts_threshold;
2396 old_coverage_class = rdev->wiphy.coverage_class;
2397
2398 if (changed & WIPHY_PARAM_RETRY_SHORT)
2399 rdev->wiphy.retry_short = retry_short;
2400 if (changed & WIPHY_PARAM_RETRY_LONG)
2401 rdev->wiphy.retry_long = retry_long;
2402 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2403 rdev->wiphy.frag_threshold = frag_threshold;
2404 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2405 rdev->wiphy.rts_threshold = rts_threshold;
2406 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2407 rdev->wiphy.coverage_class = coverage_class;
2408
2409 result = rdev_set_wiphy_params(rdev, changed);
2410 if (result) {
2411 rdev->wiphy.retry_short = old_retry_short;
2412 rdev->wiphy.retry_long = old_retry_long;
2413 rdev->wiphy.frag_threshold = old_frag_threshold;
2414 rdev->wiphy.rts_threshold = old_rts_threshold;
2415 rdev->wiphy.coverage_class = old_coverage_class;
2416 return result;
2417 }
2418 }
2419 return 0;
2420 }
2421
2422 static inline u64 wdev_id(struct wireless_dev *wdev)
2423 {
2424 return (u64)wdev->identifier |
2425 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2426 }
2427
2428 static int nl80211_send_chandef(struct sk_buff *msg,
2429 const struct cfg80211_chan_def *chandef)
2430 {
2431 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2432 return -EINVAL;
2433
2434 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2435 chandef->chan->center_freq))
2436 return -ENOBUFS;
2437 switch (chandef->width) {
2438 case NL80211_CHAN_WIDTH_20_NOHT:
2439 case NL80211_CHAN_WIDTH_20:
2440 case NL80211_CHAN_WIDTH_40:
2441 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2442 cfg80211_get_chandef_type(chandef)))
2443 return -ENOBUFS;
2444 break;
2445 default:
2446 break;
2447 }
2448 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2449 return -ENOBUFS;
2450 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2451 return -ENOBUFS;
2452 if (chandef->center_freq2 &&
2453 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2454 return -ENOBUFS;
2455 return 0;
2456 }
2457
2458 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2459 struct cfg80211_registered_device *rdev,
2460 struct wireless_dev *wdev, bool removal)
2461 {
2462 struct net_device *dev = wdev->netdev;
2463 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2464 void *hdr;
2465
2466 if (removal)
2467 cmd = NL80211_CMD_DEL_INTERFACE;
2468
2469 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2470 if (!hdr)
2471 return -1;
2472
2473 if (dev &&
2474 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2475 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2476 goto nla_put_failure;
2477
2478 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2479 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2480 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2481 NL80211_ATTR_PAD) ||
2482 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2483 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2484 rdev->devlist_generation ^
2485 (cfg80211_rdev_list_generation << 2)))
2486 goto nla_put_failure;
2487
2488 if (rdev->ops->get_channel) {
2489 int ret;
2490 struct cfg80211_chan_def chandef;
2491
2492 ret = rdev_get_channel(rdev, wdev, &chandef);
2493 if (ret == 0) {
2494 if (nl80211_send_chandef(msg, &chandef))
2495 goto nla_put_failure;
2496 }
2497 }
2498
2499 if (rdev->ops->get_tx_power) {
2500 int dbm, ret;
2501
2502 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2503 if (ret == 0 &&
2504 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2505 DBM_TO_MBM(dbm)))
2506 goto nla_put_failure;
2507 }
2508
2509 if (wdev->ssid_len) {
2510 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2511 goto nla_put_failure;
2512 }
2513
2514 genlmsg_end(msg, hdr);
2515 return 0;
2516
2517 nla_put_failure:
2518 genlmsg_cancel(msg, hdr);
2519 return -EMSGSIZE;
2520 }
2521
2522 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2523 {
2524 int wp_idx = 0;
2525 int if_idx = 0;
2526 int wp_start = cb->args[0];
2527 int if_start = cb->args[1];
2528 struct cfg80211_registered_device *rdev;
2529 struct wireless_dev *wdev;
2530
2531 rtnl_lock();
2532 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2533 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2534 continue;
2535 if (wp_idx < wp_start) {
2536 wp_idx++;
2537 continue;
2538 }
2539 if_idx = 0;
2540
2541 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2542 if (if_idx < if_start) {
2543 if_idx++;
2544 continue;
2545 }
2546 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2547 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2548 rdev, wdev, false) < 0) {
2549 goto out;
2550 }
2551 if_idx++;
2552 }
2553
2554 wp_idx++;
2555 }
2556 out:
2557 rtnl_unlock();
2558
2559 cb->args[0] = wp_idx;
2560 cb->args[1] = if_idx;
2561
2562 return skb->len;
2563 }
2564
2565 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2566 {
2567 struct sk_buff *msg;
2568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2569 struct wireless_dev *wdev = info->user_ptr[1];
2570
2571 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2572 if (!msg)
2573 return -ENOMEM;
2574
2575 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2576 rdev, wdev, false) < 0) {
2577 nlmsg_free(msg);
2578 return -ENOBUFS;
2579 }
2580
2581 return genlmsg_reply(msg, info);
2582 }
2583
2584 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2585 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2586 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2587 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2588 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2589 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2590 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2591 };
2592
2593 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2594 {
2595 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2596 int flag;
2597
2598 *mntrflags = 0;
2599
2600 if (!nla)
2601 return -EINVAL;
2602
2603 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2604 nla, mntr_flags_policy))
2605 return -EINVAL;
2606
2607 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2608 if (flags[flag])
2609 *mntrflags |= (1<<flag);
2610
2611 return 0;
2612 }
2613
2614 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2615 struct net_device *netdev, u8 use_4addr,
2616 enum nl80211_iftype iftype)
2617 {
2618 if (!use_4addr) {
2619 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2620 return -EBUSY;
2621 return 0;
2622 }
2623
2624 switch (iftype) {
2625 case NL80211_IFTYPE_AP_VLAN:
2626 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2627 return 0;
2628 break;
2629 case NL80211_IFTYPE_STATION:
2630 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2631 return 0;
2632 break;
2633 default:
2634 break;
2635 }
2636
2637 return -EOPNOTSUPP;
2638 }
2639
2640 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2641 {
2642 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2643 struct vif_params params;
2644 int err;
2645 enum nl80211_iftype otype, ntype;
2646 struct net_device *dev = info->user_ptr[1];
2647 u32 _flags, *flags = NULL;
2648 bool change = false;
2649
2650 memset(&params, 0, sizeof(params));
2651
2652 otype = ntype = dev->ieee80211_ptr->iftype;
2653
2654 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2655 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2656 if (otype != ntype)
2657 change = true;
2658 if (ntype > NL80211_IFTYPE_MAX)
2659 return -EINVAL;
2660 }
2661
2662 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2663 struct wireless_dev *wdev = dev->ieee80211_ptr;
2664
2665 if (ntype != NL80211_IFTYPE_MESH_POINT)
2666 return -EINVAL;
2667 if (netif_running(dev))
2668 return -EBUSY;
2669
2670 wdev_lock(wdev);
2671 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2672 IEEE80211_MAX_MESH_ID_LEN);
2673 wdev->mesh_id_up_len =
2674 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2675 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2676 wdev->mesh_id_up_len);
2677 wdev_unlock(wdev);
2678 }
2679
2680 if (info->attrs[NL80211_ATTR_4ADDR]) {
2681 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2682 change = true;
2683 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2684 if (err)
2685 return err;
2686 } else {
2687 params.use_4addr = -1;
2688 }
2689
2690 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2691 if (ntype != NL80211_IFTYPE_MONITOR)
2692 return -EINVAL;
2693 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2694 &_flags);
2695 if (err)
2696 return err;
2697
2698 flags = &_flags;
2699 change = true;
2700 }
2701
2702 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2703 const u8 *mumimo_groups;
2704 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2705
2706 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2707 return -EOPNOTSUPP;
2708
2709 mumimo_groups =
2710 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2711
2712 /* bits 0 and 63 are reserved and must be zero */
2713 if ((mumimo_groups[0] & BIT(7)) ||
2714 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2715 return -EINVAL;
2716
2717 memcpy(params.vht_mumimo_groups, mumimo_groups,
2718 VHT_MUMIMO_GROUPS_DATA_LEN);
2719 change = true;
2720 }
2721
2722 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2723 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2724
2725 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2726 return -EOPNOTSUPP;
2727
2728 nla_memcpy(params.macaddr,
2729 info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2730 ETH_ALEN);
2731 change = true;
2732 }
2733
2734 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2735 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2736 return -EOPNOTSUPP;
2737
2738 if (change)
2739 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2740 else
2741 err = 0;
2742
2743 if (!err && params.use_4addr != -1)
2744 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2745
2746 return err;
2747 }
2748
2749 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2750 {
2751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2752 struct vif_params params;
2753 struct wireless_dev *wdev;
2754 struct sk_buff *msg, *event;
2755 int err;
2756 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2757 u32 flags;
2758
2759 /* to avoid failing a new interface creation due to pending removal */
2760 cfg80211_destroy_ifaces(rdev);
2761
2762 memset(&params, 0, sizeof(params));
2763
2764 if (!info->attrs[NL80211_ATTR_IFNAME])
2765 return -EINVAL;
2766
2767 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2768 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2769 if (type > NL80211_IFTYPE_MAX)
2770 return -EINVAL;
2771 }
2772
2773 if (!rdev->ops->add_virtual_intf ||
2774 !(rdev->wiphy.interface_modes & (1 << type)))
2775 return -EOPNOTSUPP;
2776
2777 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2778 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2779 info->attrs[NL80211_ATTR_MAC]) {
2780 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2781 ETH_ALEN);
2782 if (!is_valid_ether_addr(params.macaddr))
2783 return -EADDRNOTAVAIL;
2784 }
2785
2786 if (info->attrs[NL80211_ATTR_4ADDR]) {
2787 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2788 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2789 if (err)
2790 return err;
2791 }
2792
2793 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2794 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2795 &flags);
2796
2797 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2798 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2799 return -EOPNOTSUPP;
2800
2801 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2802 if (!msg)
2803 return -ENOMEM;
2804
2805 wdev = rdev_add_virtual_intf(rdev,
2806 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2807 NET_NAME_USER, type, err ? NULL : &flags,
2808 &params);
2809 if (WARN_ON(!wdev)) {
2810 nlmsg_free(msg);
2811 return -EPROTO;
2812 } else if (IS_ERR(wdev)) {
2813 nlmsg_free(msg);
2814 return PTR_ERR(wdev);
2815 }
2816
2817 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2818 wdev->owner_nlportid = info->snd_portid;
2819
2820 switch (type) {
2821 case NL80211_IFTYPE_MESH_POINT:
2822 if (!info->attrs[NL80211_ATTR_MESH_ID])
2823 break;
2824 wdev_lock(wdev);
2825 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2826 IEEE80211_MAX_MESH_ID_LEN);
2827 wdev->mesh_id_up_len =
2828 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2829 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2830 wdev->mesh_id_up_len);
2831 wdev_unlock(wdev);
2832 break;
2833 case NL80211_IFTYPE_P2P_DEVICE:
2834 /*
2835 * P2P Device doesn't have a netdev, so doesn't go
2836 * through the netdev notifier and must be added here
2837 */
2838 mutex_init(&wdev->mtx);
2839 INIT_LIST_HEAD(&wdev->event_list);
2840 spin_lock_init(&wdev->event_lock);
2841 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2842 spin_lock_init(&wdev->mgmt_registrations_lock);
2843
2844 wdev->identifier = ++rdev->wdev_id;
2845 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2846 rdev->devlist_generation++;
2847 break;
2848 default:
2849 break;
2850 }
2851
2852 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2853 rdev, wdev, false) < 0) {
2854 nlmsg_free(msg);
2855 return -ENOBUFS;
2856 }
2857
2858 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2859 if (event) {
2860 if (nl80211_send_iface(event, 0, 0, 0,
2861 rdev, wdev, false) < 0) {
2862 nlmsg_free(event);
2863 goto out;
2864 }
2865
2866 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2867 event, 0, NL80211_MCGRP_CONFIG,
2868 GFP_KERNEL);
2869 }
2870
2871 out:
2872 return genlmsg_reply(msg, info);
2873 }
2874
2875 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2876 {
2877 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2878 struct wireless_dev *wdev = info->user_ptr[1];
2879 struct sk_buff *msg;
2880 int status;
2881
2882 if (!rdev->ops->del_virtual_intf)
2883 return -EOPNOTSUPP;
2884
2885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2886 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2887 nlmsg_free(msg);
2888 msg = NULL;
2889 }
2890
2891 /*
2892 * If we remove a wireless device without a netdev then clear
2893 * user_ptr[1] so that nl80211_post_doit won't dereference it
2894 * to check if it needs to do dev_put(). Otherwise it crashes
2895 * since the wdev has been freed, unlike with a netdev where
2896 * we need the dev_put() for the netdev to really be freed.
2897 */
2898 if (!wdev->netdev)
2899 info->user_ptr[1] = NULL;
2900
2901 status = rdev_del_virtual_intf(rdev, wdev);
2902 if (status >= 0 && msg)
2903 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2904 msg, 0, NL80211_MCGRP_CONFIG,
2905 GFP_KERNEL);
2906 else
2907 nlmsg_free(msg);
2908
2909 return status;
2910 }
2911
2912 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2913 {
2914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2915 struct net_device *dev = info->user_ptr[1];
2916 u16 noack_map;
2917
2918 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2919 return -EINVAL;
2920
2921 if (!rdev->ops->set_noack_map)
2922 return -EOPNOTSUPP;
2923
2924 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2925
2926 return rdev_set_noack_map(rdev, dev, noack_map);
2927 }
2928
2929 struct get_key_cookie {
2930 struct sk_buff *msg;
2931 int error;
2932 int idx;
2933 };
2934
2935 static void get_key_callback(void *c, struct key_params *params)
2936 {
2937 struct nlattr *key;
2938 struct get_key_cookie *cookie = c;
2939
2940 if ((params->key &&
2941 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2942 params->key_len, params->key)) ||
2943 (params->seq &&
2944 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2945 params->seq_len, params->seq)) ||
2946 (params->cipher &&
2947 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2948 params->cipher)))
2949 goto nla_put_failure;
2950
2951 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2952 if (!key)
2953 goto nla_put_failure;
2954
2955 if ((params->key &&
2956 nla_put(cookie->msg, NL80211_KEY_DATA,
2957 params->key_len, params->key)) ||
2958 (params->seq &&
2959 nla_put(cookie->msg, NL80211_KEY_SEQ,
2960 params->seq_len, params->seq)) ||
2961 (params->cipher &&
2962 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2963 params->cipher)))
2964 goto nla_put_failure;
2965
2966 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2967 goto nla_put_failure;
2968
2969 nla_nest_end(cookie->msg, key);
2970
2971 return;
2972 nla_put_failure:
2973 cookie->error = 1;
2974 }
2975
2976 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2977 {
2978 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2979 int err;
2980 struct net_device *dev = info->user_ptr[1];
2981 u8 key_idx = 0;
2982 const u8 *mac_addr = NULL;
2983 bool pairwise;
2984 struct get_key_cookie cookie = {
2985 .error = 0,
2986 };
2987 void *hdr;
2988 struct sk_buff *msg;
2989
2990 if (info->attrs[NL80211_ATTR_KEY_IDX])
2991 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2992
2993 if (key_idx > 5)
2994 return -EINVAL;
2995
2996 if (info->attrs[NL80211_ATTR_MAC])
2997 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2998
2999 pairwise = !!mac_addr;
3000 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3001 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3002
3003 if (kt >= NUM_NL80211_KEYTYPES)
3004 return -EINVAL;
3005 if (kt != NL80211_KEYTYPE_GROUP &&
3006 kt != NL80211_KEYTYPE_PAIRWISE)
3007 return -EINVAL;
3008 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3009 }
3010
3011 if (!rdev->ops->get_key)
3012 return -EOPNOTSUPP;
3013
3014 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3015 return -ENOENT;
3016
3017 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3018 if (!msg)
3019 return -ENOMEM;
3020
3021 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3022 NL80211_CMD_NEW_KEY);
3023 if (!hdr)
3024 goto nla_put_failure;
3025
3026 cookie.msg = msg;
3027 cookie.idx = key_idx;
3028
3029 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3030 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3031 goto nla_put_failure;
3032 if (mac_addr &&
3033 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3034 goto nla_put_failure;
3035
3036 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3037 get_key_callback);
3038
3039 if (err)
3040 goto free_msg;
3041
3042 if (cookie.error)
3043 goto nla_put_failure;
3044
3045 genlmsg_end(msg, hdr);
3046 return genlmsg_reply(msg, info);
3047
3048 nla_put_failure:
3049 err = -ENOBUFS;
3050 free_msg:
3051 nlmsg_free(msg);
3052 return err;
3053 }
3054
3055 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3056 {
3057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3058 struct key_parse key;
3059 int err;
3060 struct net_device *dev = info->user_ptr[1];
3061
3062 err = nl80211_parse_key(info, &key);
3063 if (err)
3064 return err;
3065
3066 if (key.idx < 0)
3067 return -EINVAL;
3068
3069 /* only support setting default key */
3070 if (!key.def && !key.defmgmt)
3071 return -EINVAL;
3072
3073 wdev_lock(dev->ieee80211_ptr);
3074
3075 if (key.def) {
3076 if (!rdev->ops->set_default_key) {
3077 err = -EOPNOTSUPP;
3078 goto out;
3079 }
3080
3081 err = nl80211_key_allowed(dev->ieee80211_ptr);
3082 if (err)
3083 goto out;
3084
3085 err = rdev_set_default_key(rdev, dev, key.idx,
3086 key.def_uni, key.def_multi);
3087
3088 if (err)
3089 goto out;
3090
3091 #ifdef CONFIG_CFG80211_WEXT
3092 dev->ieee80211_ptr->wext.default_key = key.idx;
3093 #endif
3094 } else {
3095 if (key.def_uni || !key.def_multi) {
3096 err = -EINVAL;
3097 goto out;
3098 }
3099
3100 if (!rdev->ops->set_default_mgmt_key) {
3101 err = -EOPNOTSUPP;
3102 goto out;
3103 }
3104
3105 err = nl80211_key_allowed(dev->ieee80211_ptr);
3106 if (err)
3107 goto out;
3108
3109 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3110 if (err)
3111 goto out;
3112
3113 #ifdef CONFIG_CFG80211_WEXT
3114 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3115 #endif
3116 }
3117
3118 out:
3119 wdev_unlock(dev->ieee80211_ptr);
3120
3121 return err;
3122 }
3123
3124 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3125 {
3126 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3127 int err;
3128 struct net_device *dev = info->user_ptr[1];
3129 struct key_parse key;
3130 const u8 *mac_addr = NULL;
3131
3132 err = nl80211_parse_key(info, &key);
3133 if (err)
3134 return err;
3135
3136 if (!key.p.key)
3137 return -EINVAL;
3138
3139 if (info->attrs[NL80211_ATTR_MAC])
3140 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3141
3142 if (key.type == -1) {
3143 if (mac_addr)
3144 key.type = NL80211_KEYTYPE_PAIRWISE;
3145 else
3146 key.type = NL80211_KEYTYPE_GROUP;
3147 }
3148
3149 /* for now */
3150 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3151 key.type != NL80211_KEYTYPE_GROUP)
3152 return -EINVAL;
3153
3154 if (!rdev->ops->add_key)
3155 return -EOPNOTSUPP;
3156
3157 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3158 key.type == NL80211_KEYTYPE_PAIRWISE,
3159 mac_addr))
3160 return -EINVAL;
3161
3162 wdev_lock(dev->ieee80211_ptr);
3163 err = nl80211_key_allowed(dev->ieee80211_ptr);
3164 if (!err)
3165 err = rdev_add_key(rdev, dev, key.idx,
3166 key.type == NL80211_KEYTYPE_PAIRWISE,
3167 mac_addr, &key.p);
3168 wdev_unlock(dev->ieee80211_ptr);
3169
3170 return err;
3171 }
3172
3173 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3174 {
3175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3176 int err;
3177 struct net_device *dev = info->user_ptr[1];
3178 u8 *mac_addr = NULL;
3179 struct key_parse key;
3180
3181 err = nl80211_parse_key(info, &key);
3182 if (err)
3183 return err;
3184
3185 if (info->attrs[NL80211_ATTR_MAC])
3186 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3187
3188 if (key.type == -1) {
3189 if (mac_addr)
3190 key.type = NL80211_KEYTYPE_PAIRWISE;
3191 else
3192 key.type = NL80211_KEYTYPE_GROUP;
3193 }
3194
3195 /* for now */
3196 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3197 key.type != NL80211_KEYTYPE_GROUP)
3198 return -EINVAL;
3199
3200 if (!rdev->ops->del_key)
3201 return -EOPNOTSUPP;
3202
3203 wdev_lock(dev->ieee80211_ptr);
3204 err = nl80211_key_allowed(dev->ieee80211_ptr);
3205
3206 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3207 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3208 err = -ENOENT;
3209
3210 if (!err)
3211 err = rdev_del_key(rdev, dev, key.idx,
3212 key.type == NL80211_KEYTYPE_PAIRWISE,
3213 mac_addr);
3214
3215 #ifdef CONFIG_CFG80211_WEXT
3216 if (!err) {
3217 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3218 dev->ieee80211_ptr->wext.default_key = -1;
3219 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3220 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3221 }
3222 #endif
3223 wdev_unlock(dev->ieee80211_ptr);
3224
3225 return err;
3226 }
3227
3228 /* This function returns an error or the number of nested attributes */
3229 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3230 {
3231 struct nlattr *attr;
3232 int n_entries = 0, tmp;
3233
3234 nla_for_each_nested(attr, nl_attr, tmp) {
3235 if (nla_len(attr) != ETH_ALEN)
3236 return -EINVAL;
3237
3238 n_entries++;
3239 }
3240
3241 return n_entries;
3242 }
3243
3244 /*
3245 * This function parses ACL information and allocates memory for ACL data.
3246 * On successful return, the calling function is responsible to free the
3247 * ACL buffer returned by this function.
3248 */
3249 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3250 struct genl_info *info)
3251 {
3252 enum nl80211_acl_policy acl_policy;
3253 struct nlattr *attr;
3254 struct cfg80211_acl_data *acl;
3255 int i = 0, n_entries, tmp;
3256
3257 if (!wiphy->max_acl_mac_addrs)
3258 return ERR_PTR(-EOPNOTSUPP);
3259
3260 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3261 return ERR_PTR(-EINVAL);
3262
3263 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3264 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3265 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3266 return ERR_PTR(-EINVAL);
3267
3268 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3269 return ERR_PTR(-EINVAL);
3270
3271 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3272 if (n_entries < 0)
3273 return ERR_PTR(n_entries);
3274
3275 if (n_entries > wiphy->max_acl_mac_addrs)
3276 return ERR_PTR(-ENOTSUPP);
3277
3278 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3279 GFP_KERNEL);
3280 if (!acl)
3281 return ERR_PTR(-ENOMEM);
3282
3283 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3284 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3285 i++;
3286 }
3287
3288 acl->n_acl_entries = n_entries;
3289 acl->acl_policy = acl_policy;
3290
3291 return acl;
3292 }
3293
3294 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3295 {
3296 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3297 struct net_device *dev = info->user_ptr[1];
3298 struct cfg80211_acl_data *acl;
3299 int err;
3300
3301 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3302 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3303 return -EOPNOTSUPP;
3304
3305 if (!dev->ieee80211_ptr->beacon_interval)
3306 return -EINVAL;
3307
3308 acl = parse_acl_data(&rdev->wiphy, info);
3309 if (IS_ERR(acl))
3310 return PTR_ERR(acl);
3311
3312 err = rdev_set_mac_acl(rdev, dev, acl);
3313
3314 kfree(acl);
3315
3316 return err;
3317 }
3318
3319 static int nl80211_parse_beacon(struct nlattr *attrs[],
3320 struct cfg80211_beacon_data *bcn)
3321 {
3322 bool haveinfo = false;
3323
3324 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3325 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3326 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3327 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3328 return -EINVAL;
3329
3330 memset(bcn, 0, sizeof(*bcn));
3331
3332 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3333 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3334 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3335 if (!bcn->head_len)
3336 return -EINVAL;
3337 haveinfo = true;
3338 }
3339
3340 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3341 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3342 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3343 haveinfo = true;
3344 }
3345
3346 if (!haveinfo)
3347 return -EINVAL;
3348
3349 if (attrs[NL80211_ATTR_IE]) {
3350 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3351 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3352 }
3353
3354 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3355 bcn->proberesp_ies =
3356 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3357 bcn->proberesp_ies_len =
3358 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3359 }
3360
3361 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3362 bcn->assocresp_ies =
3363 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3364 bcn->assocresp_ies_len =
3365 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3366 }
3367
3368 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3369 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3370 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3371 }
3372
3373 return 0;
3374 }
3375
3376 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3377 struct cfg80211_ap_settings *params)
3378 {
3379 struct wireless_dev *wdev;
3380 bool ret = false;
3381
3382 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3383 if (wdev->iftype != NL80211_IFTYPE_AP &&
3384 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3385 continue;
3386
3387 if (!wdev->preset_chandef.chan)
3388 continue;
3389
3390 params->chandef = wdev->preset_chandef;
3391 ret = true;
3392 break;
3393 }
3394
3395 return ret;
3396 }
3397
3398 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3399 enum nl80211_auth_type auth_type,
3400 enum nl80211_commands cmd)
3401 {
3402 if (auth_type > NL80211_AUTHTYPE_MAX)
3403 return false;
3404
3405 switch (cmd) {
3406 case NL80211_CMD_AUTHENTICATE:
3407 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3408 auth_type == NL80211_AUTHTYPE_SAE)
3409 return false;
3410 return true;
3411 case NL80211_CMD_CONNECT:
3412 case NL80211_CMD_START_AP:
3413 /* SAE not supported yet */
3414 if (auth_type == NL80211_AUTHTYPE_SAE)
3415 return false;
3416 return true;
3417 default:
3418 return false;
3419 }
3420 }
3421
3422 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3423 {
3424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3425 struct net_device *dev = info->user_ptr[1];
3426 struct wireless_dev *wdev = dev->ieee80211_ptr;
3427 struct cfg80211_ap_settings params;
3428 int err;
3429
3430 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3431 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3432 return -EOPNOTSUPP;
3433
3434 if (!rdev->ops->start_ap)
3435 return -EOPNOTSUPP;
3436
3437 if (wdev->beacon_interval)
3438 return -EALREADY;
3439
3440 memset(&params, 0, sizeof(params));
3441
3442 /* these are required for START_AP */
3443 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3444 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3445 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3446 return -EINVAL;
3447
3448 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3449 if (err)
3450 return err;
3451
3452 params.beacon_interval =
3453 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3454 params.dtim_period =
3455 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3456
3457 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3458 if (err)
3459 return err;
3460
3461 /*
3462 * In theory, some of these attributes should be required here
3463 * but since they were not used when the command was originally
3464 * added, keep them optional for old user space programs to let
3465 * them continue to work with drivers that do not need the
3466 * additional information -- drivers must check!
3467 */
3468 if (info->attrs[NL80211_ATTR_SSID]) {
3469 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3470 params.ssid_len =
3471 nla_len(info->attrs[NL80211_ATTR_SSID]);
3472 if (params.ssid_len == 0 ||
3473 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3474 return -EINVAL;
3475 }
3476
3477 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3478 params.hidden_ssid = nla_get_u32(
3479 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3480 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3481 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3482 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3483 return -EINVAL;
3484 }
3485
3486 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3487
3488 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3489 params.auth_type = nla_get_u32(
3490 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3491 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3492 NL80211_CMD_START_AP))
3493 return -EINVAL;
3494 } else
3495 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3496
3497 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3498 NL80211_MAX_NR_CIPHER_SUITES);
3499 if (err)
3500 return err;
3501
3502 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3503 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3504 return -EOPNOTSUPP;
3505 params.inactivity_timeout = nla_get_u16(
3506 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3507 }
3508
3509 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3510 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3511 return -EINVAL;
3512 params.p2p_ctwindow =
3513 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3514 if (params.p2p_ctwindow > 127)
3515 return -EINVAL;
3516 if (params.p2p_ctwindow != 0 &&
3517 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3518 return -EINVAL;
3519 }
3520
3521 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3522 u8 tmp;
3523
3524 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3525 return -EINVAL;
3526 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3527 if (tmp > 1)
3528 return -EINVAL;
3529 params.p2p_opp_ps = tmp;
3530 if (params.p2p_opp_ps != 0 &&
3531 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3532 return -EINVAL;
3533 }
3534
3535 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3536 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3537 if (err)
3538 return err;
3539 } else if (wdev->preset_chandef.chan) {
3540 params.chandef = wdev->preset_chandef;
3541 } else if (!nl80211_get_ap_channel(rdev, &params))
3542 return -EINVAL;
3543
3544 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3545 wdev->iftype))
3546 return -EINVAL;
3547
3548 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3549 params.smps_mode =
3550 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3551 switch (params.smps_mode) {
3552 case NL80211_SMPS_OFF:
3553 break;
3554 case NL80211_SMPS_STATIC:
3555 if (!(rdev->wiphy.features &
3556 NL80211_FEATURE_STATIC_SMPS))
3557 return -EINVAL;
3558 break;
3559 case NL80211_SMPS_DYNAMIC:
3560 if (!(rdev->wiphy.features &
3561 NL80211_FEATURE_DYNAMIC_SMPS))
3562 return -EINVAL;
3563 break;
3564 default:
3565 return -EINVAL;
3566 }
3567 } else {
3568 params.smps_mode = NL80211_SMPS_OFF;
3569 }
3570
3571 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3572 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3573 return -EOPNOTSUPP;
3574
3575 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3576 params.acl = parse_acl_data(&rdev->wiphy, info);
3577 if (IS_ERR(params.acl))
3578 return PTR_ERR(params.acl);
3579 }
3580
3581 wdev_lock(wdev);
3582 err = rdev_start_ap(rdev, dev, &params);
3583 if (!err) {
3584 wdev->preset_chandef = params.chandef;
3585 wdev->beacon_interval = params.beacon_interval;
3586 wdev->chandef = params.chandef;
3587 wdev->ssid_len = params.ssid_len;
3588 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3589 }
3590 wdev_unlock(wdev);
3591
3592 kfree(params.acl);
3593
3594 return err;
3595 }
3596
3597 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3598 {
3599 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3600 struct net_device *dev = info->user_ptr[1];
3601 struct wireless_dev *wdev = dev->ieee80211_ptr;
3602 struct cfg80211_beacon_data params;
3603 int err;
3604
3605 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3606 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3607 return -EOPNOTSUPP;
3608
3609 if (!rdev->ops->change_beacon)
3610 return -EOPNOTSUPP;
3611
3612 if (!wdev->beacon_interval)
3613 return -EINVAL;
3614
3615 err = nl80211_parse_beacon(info->attrs, &params);
3616 if (err)
3617 return err;
3618
3619 wdev_lock(wdev);
3620 err = rdev_change_beacon(rdev, dev, &params);
3621 wdev_unlock(wdev);
3622
3623 return err;
3624 }
3625
3626 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3627 {
3628 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3629 struct net_device *dev = info->user_ptr[1];
3630
3631 return cfg80211_stop_ap(rdev, dev, false);
3632 }
3633
3634 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3635 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3636 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3637 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3638 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3639 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3640 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3641 };
3642
3643 static int parse_station_flags(struct genl_info *info,
3644 enum nl80211_iftype iftype,
3645 struct station_parameters *params)
3646 {
3647 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3648 struct nlattr *nla;
3649 int flag;
3650
3651 /*
3652 * Try parsing the new attribute first so userspace
3653 * can specify both for older kernels.
3654 */
3655 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3656 if (nla) {
3657 struct nl80211_sta_flag_update *sta_flags;
3658
3659 sta_flags = nla_data(nla);
3660 params->sta_flags_mask = sta_flags->mask;
3661 params->sta_flags_set = sta_flags->set;
3662 params->sta_flags_set &= params->sta_flags_mask;
3663 if ((params->sta_flags_mask |
3664 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3665 return -EINVAL;
3666 return 0;
3667 }
3668
3669 /* if present, parse the old attribute */
3670
3671 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3672 if (!nla)
3673 return 0;
3674
3675 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3676 nla, sta_flags_policy))
3677 return -EINVAL;
3678
3679 /*
3680 * Only allow certain flags for interface types so that
3681 * other attributes are silently ignored. Remember that
3682 * this is backward compatibility code with old userspace
3683 * and shouldn't be hit in other cases anyway.
3684 */
3685 switch (iftype) {
3686 case NL80211_IFTYPE_AP:
3687 case NL80211_IFTYPE_AP_VLAN:
3688 case NL80211_IFTYPE_P2P_GO:
3689 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3690 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3691 BIT(NL80211_STA_FLAG_WME) |
3692 BIT(NL80211_STA_FLAG_MFP);
3693 break;
3694 case NL80211_IFTYPE_P2P_CLIENT:
3695 case NL80211_IFTYPE_STATION:
3696 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3697 BIT(NL80211_STA_FLAG_TDLS_PEER);
3698 break;
3699 case NL80211_IFTYPE_MESH_POINT:
3700 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3701 BIT(NL80211_STA_FLAG_MFP) |
3702 BIT(NL80211_STA_FLAG_AUTHORIZED);
3703 default:
3704 return -EINVAL;
3705 }
3706
3707 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3708 if (flags[flag]) {
3709 params->sta_flags_set |= (1<<flag);
3710
3711 /* no longer support new API additions in old API */
3712 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3713 return -EINVAL;
3714 }
3715 }
3716
3717 return 0;
3718 }
3719
3720 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3721 int attr)
3722 {
3723 struct nlattr *rate;
3724 u32 bitrate;
3725 u16 bitrate_compat;
3726 enum nl80211_attrs rate_flg;
3727
3728 rate = nla_nest_start(msg, attr);
3729 if (!rate)
3730 return false;
3731
3732 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3733 bitrate = cfg80211_calculate_bitrate(info);
3734 /* report 16-bit bitrate only if we can */
3735 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3736 if (bitrate > 0 &&
3737 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3738 return false;
3739 if (bitrate_compat > 0 &&
3740 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3741 return false;
3742
3743 switch (info->bw) {
3744 case RATE_INFO_BW_5:
3745 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3746 break;
3747 case RATE_INFO_BW_10:
3748 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3749 break;
3750 default:
3751 WARN_ON(1);
3752 /* fall through */
3753 case RATE_INFO_BW_20:
3754 rate_flg = 0;
3755 break;
3756 case RATE_INFO_BW_40:
3757 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3758 break;
3759 case RATE_INFO_BW_80:
3760 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3761 break;
3762 case RATE_INFO_BW_160:
3763 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3764 break;
3765 }
3766
3767 if (rate_flg && nla_put_flag(msg, rate_flg))
3768 return false;
3769
3770 if (info->flags & RATE_INFO_FLAGS_MCS) {
3771 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3772 return false;
3773 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3774 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3775 return false;
3776 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3777 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3778 return false;
3779 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3780 return false;
3781 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3782 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3783 return false;
3784 }
3785
3786 nla_nest_end(msg, rate);
3787 return true;
3788 }
3789
3790 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3791 int id)
3792 {
3793 void *attr;
3794 int i = 0;
3795
3796 if (!mask)
3797 return true;
3798
3799 attr = nla_nest_start(msg, id);
3800 if (!attr)
3801 return false;
3802
3803 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3804 if (!(mask & BIT(i)))
3805 continue;
3806
3807 if (nla_put_u8(msg, i, signal[i]))
3808 return false;
3809 }
3810
3811 nla_nest_end(msg, attr);
3812
3813 return true;
3814 }
3815
3816 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3817 u32 seq, int flags,
3818 struct cfg80211_registered_device *rdev,
3819 struct net_device *dev,
3820 const u8 *mac_addr, struct station_info *sinfo)
3821 {
3822 void *hdr;
3823 struct nlattr *sinfoattr, *bss_param;
3824
3825 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3826 if (!hdr)
3827 return -1;
3828
3829 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3830 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3831 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3832 goto nla_put_failure;
3833
3834 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3835 if (!sinfoattr)
3836 goto nla_put_failure;
3837
3838 #define PUT_SINFO(attr, memb, type) do { \
3839 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
3840 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
3841 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3842 sinfo->memb)) \
3843 goto nla_put_failure; \
3844 } while (0)
3845 #define PUT_SINFO_U64(attr, memb) do { \
3846 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
3847 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
3848 sinfo->memb, NL80211_STA_INFO_PAD)) \
3849 goto nla_put_failure; \
3850 } while (0)
3851
3852 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3853 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3854
3855 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3856 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3857 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3858 (u32)sinfo->rx_bytes))
3859 goto nla_put_failure;
3860
3861 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3862 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3863 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3864 (u32)sinfo->tx_bytes))
3865 goto nla_put_failure;
3866
3867 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
3868 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
3869 PUT_SINFO(LLID, llid, u16);
3870 PUT_SINFO(PLID, plid, u16);
3871 PUT_SINFO(PLINK_STATE, plink_state, u8);
3872 PUT_SINFO_U64(RX_DURATION, rx_duration);
3873
3874 switch (rdev->wiphy.signal_type) {
3875 case CFG80211_SIGNAL_TYPE_MBM:
3876 PUT_SINFO(SIGNAL, signal, u8);
3877 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3878 break;
3879 default:
3880 break;
3881 }
3882 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3883 if (!nl80211_put_signal(msg, sinfo->chains,
3884 sinfo->chain_signal,
3885 NL80211_STA_INFO_CHAIN_SIGNAL))
3886 goto nla_put_failure;
3887 }
3888 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3889 if (!nl80211_put_signal(msg, sinfo->chains,
3890 sinfo->chain_signal_avg,
3891 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3892 goto nla_put_failure;
3893 }
3894 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3895 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3896 NL80211_STA_INFO_TX_BITRATE))
3897 goto nla_put_failure;
3898 }
3899 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3900 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3901 NL80211_STA_INFO_RX_BITRATE))
3902 goto nla_put_failure;
3903 }
3904
3905 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3906 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3907 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3908 PUT_SINFO(TX_FAILED, tx_failed, u32);
3909 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3910 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3911 PUT_SINFO(LOCAL_PM, local_pm, u32);
3912 PUT_SINFO(PEER_PM, peer_pm, u32);
3913 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3914
3915 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3916 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3917 if (!bss_param)
3918 goto nla_put_failure;
3919
3920 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3921 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3922 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3923 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3924 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3925 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3926 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3927 sinfo->bss_param.dtim_period) ||
3928 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3929 sinfo->bss_param.beacon_interval))
3930 goto nla_put_failure;
3931
3932 nla_nest_end(msg, bss_param);
3933 }
3934 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3935 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3936 sizeof(struct nl80211_sta_flag_update),
3937 &sinfo->sta_flags))
3938 goto nla_put_failure;
3939
3940 PUT_SINFO_U64(T_OFFSET, t_offset);
3941 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
3942 PUT_SINFO_U64(BEACON_RX, rx_beacon);
3943 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3944
3945 #undef PUT_SINFO
3946 #undef PUT_SINFO_U64
3947
3948 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3949 struct nlattr *tidsattr;
3950 int tid;
3951
3952 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3953 if (!tidsattr)
3954 goto nla_put_failure;
3955
3956 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3957 struct cfg80211_tid_stats *tidstats;
3958 struct nlattr *tidattr;
3959
3960 tidstats = &sinfo->pertid[tid];
3961
3962 if (!tidstats->filled)
3963 continue;
3964
3965 tidattr = nla_nest_start(msg, tid + 1);
3966 if (!tidattr)
3967 goto nla_put_failure;
3968
3969 #define PUT_TIDVAL_U64(attr, memb) do { \
3970 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3971 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
3972 tidstats->memb, NL80211_TID_STATS_PAD)) \
3973 goto nla_put_failure; \
3974 } while (0)
3975
3976 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
3977 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
3978 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
3979 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
3980
3981 #undef PUT_TIDVAL_U64
3982 nla_nest_end(msg, tidattr);
3983 }
3984
3985 nla_nest_end(msg, tidsattr);
3986 }
3987
3988 nla_nest_end(msg, sinfoattr);
3989
3990 if (sinfo->assoc_req_ies_len &&
3991 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3992 sinfo->assoc_req_ies))
3993 goto nla_put_failure;
3994
3995 genlmsg_end(msg, hdr);
3996 return 0;
3997
3998 nla_put_failure:
3999 genlmsg_cancel(msg, hdr);
4000 return -EMSGSIZE;
4001 }
4002
4003 static int nl80211_dump_station(struct sk_buff *skb,
4004 struct netlink_callback *cb)
4005 {
4006 struct station_info sinfo;
4007 struct cfg80211_registered_device *rdev;
4008 struct wireless_dev *wdev;
4009 u8 mac_addr[ETH_ALEN];
4010 int sta_idx = cb->args[2];
4011 int err;
4012
4013 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4014 if (err)
4015 return err;
4016
4017 if (!wdev->netdev) {
4018 err = -EINVAL;
4019 goto out_err;
4020 }
4021
4022 if (!rdev->ops->dump_station) {
4023 err = -EOPNOTSUPP;
4024 goto out_err;
4025 }
4026
4027 while (1) {
4028 memset(&sinfo, 0, sizeof(sinfo));
4029 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4030 mac_addr, &sinfo);
4031 if (err == -ENOENT)
4032 break;
4033 if (err)
4034 goto out_err;
4035
4036 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4037 NETLINK_CB(cb->skb).portid,
4038 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4039 rdev, wdev->netdev, mac_addr,
4040 &sinfo) < 0)
4041 goto out;
4042
4043 sta_idx++;
4044 }
4045
4046 out:
4047 cb->args[2] = sta_idx;
4048 err = skb->len;
4049 out_err:
4050 nl80211_finish_wdev_dump(rdev);
4051
4052 return err;
4053 }
4054
4055 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4056 {
4057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4058 struct net_device *dev = info->user_ptr[1];
4059 struct station_info sinfo;
4060 struct sk_buff *msg;
4061 u8 *mac_addr = NULL;
4062 int err;
4063
4064 memset(&sinfo, 0, sizeof(sinfo));
4065
4066 if (!info->attrs[NL80211_ATTR_MAC])
4067 return -EINVAL;
4068
4069 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4070
4071 if (!rdev->ops->get_station)
4072 return -EOPNOTSUPP;
4073
4074 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4075 if (err)
4076 return err;
4077
4078 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4079 if (!msg)
4080 return -ENOMEM;
4081
4082 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4083 info->snd_portid, info->snd_seq, 0,
4084 rdev, dev, mac_addr, &sinfo) < 0) {
4085 nlmsg_free(msg);
4086 return -ENOBUFS;
4087 }
4088
4089 return genlmsg_reply(msg, info);
4090 }
4091
4092 int cfg80211_check_station_change(struct wiphy *wiphy,
4093 struct station_parameters *params,
4094 enum cfg80211_station_type statype)
4095 {
4096 if (params->listen_interval != -1 &&
4097 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4098 return -EINVAL;
4099
4100 if (params->support_p2p_ps != -1 &&
4101 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4102 return -EINVAL;
4103
4104 if (params->aid &&
4105 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4106 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4107 return -EINVAL;
4108
4109 /* When you run into this, adjust the code below for the new flag */
4110 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4111
4112 switch (statype) {
4113 case CFG80211_STA_MESH_PEER_KERNEL:
4114 case CFG80211_STA_MESH_PEER_USER:
4115 /*
4116 * No ignoring the TDLS flag here -- the userspace mesh
4117 * code doesn't have the bug of including TDLS in the
4118 * mask everywhere.
4119 */
4120 if (params->sta_flags_mask &
4121 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4122 BIT(NL80211_STA_FLAG_MFP) |
4123 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4124 return -EINVAL;
4125 break;
4126 case CFG80211_STA_TDLS_PEER_SETUP:
4127 case CFG80211_STA_TDLS_PEER_ACTIVE:
4128 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4129 return -EINVAL;
4130 /* ignore since it can't change */
4131 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4132 break;
4133 default:
4134 /* disallow mesh-specific things */
4135 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4136 return -EINVAL;
4137 if (params->local_pm)
4138 return -EINVAL;
4139 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4140 return -EINVAL;
4141 }
4142
4143 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4144 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4145 /* TDLS can't be set, ... */
4146 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4147 return -EINVAL;
4148 /*
4149 * ... but don't bother the driver with it. This works around
4150 * a hostapd/wpa_supplicant issue -- it always includes the
4151 * TLDS_PEER flag in the mask even for AP mode.
4152 */
4153 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4154 }
4155
4156 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4157 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4158 /* reject other things that can't change */
4159 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4160 return -EINVAL;
4161 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4162 return -EINVAL;
4163 if (params->supported_rates)
4164 return -EINVAL;
4165 if (params->ext_capab || params->ht_capa || params->vht_capa)
4166 return -EINVAL;
4167 }
4168
4169 if (statype != CFG80211_STA_AP_CLIENT &&
4170 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4171 if (params->vlan)
4172 return -EINVAL;
4173 }
4174
4175 switch (statype) {
4176 case CFG80211_STA_AP_MLME_CLIENT:
4177 /* Use this only for authorizing/unauthorizing a station */
4178 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4179 return -EOPNOTSUPP;
4180 break;
4181 case CFG80211_STA_AP_CLIENT:
4182 case CFG80211_STA_AP_CLIENT_UNASSOC:
4183 /* accept only the listed bits */
4184 if (params->sta_flags_mask &
4185 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4186 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4187 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4188 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4189 BIT(NL80211_STA_FLAG_WME) |
4190 BIT(NL80211_STA_FLAG_MFP)))
4191 return -EINVAL;
4192
4193 /* but authenticated/associated only if driver handles it */
4194 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4195 params->sta_flags_mask &
4196 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4197 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4198 return -EINVAL;
4199 break;
4200 case CFG80211_STA_IBSS:
4201 case CFG80211_STA_AP_STA:
4202 /* reject any changes other than AUTHORIZED */
4203 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4204 return -EINVAL;
4205 break;
4206 case CFG80211_STA_TDLS_PEER_SETUP:
4207 /* reject any changes other than AUTHORIZED or WME */
4208 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4209 BIT(NL80211_STA_FLAG_WME)))
4210 return -EINVAL;
4211 /* force (at least) rates when authorizing */
4212 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4213 !params->supported_rates)
4214 return -EINVAL;
4215 break;
4216 case CFG80211_STA_TDLS_PEER_ACTIVE:
4217 /* reject any changes */
4218 return -EINVAL;
4219 case CFG80211_STA_MESH_PEER_KERNEL:
4220 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4221 return -EINVAL;
4222 break;
4223 case CFG80211_STA_MESH_PEER_USER:
4224 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4225 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4226 return -EINVAL;
4227 break;
4228 }
4229
4230 return 0;
4231 }
4232 EXPORT_SYMBOL(cfg80211_check_station_change);
4233
4234 /*
4235 * Get vlan interface making sure it is running and on the right wiphy.
4236 */
4237 static struct net_device *get_vlan(struct genl_info *info,
4238 struct cfg80211_registered_device *rdev)
4239 {
4240 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4241 struct net_device *v;
4242 int ret;
4243
4244 if (!vlanattr)
4245 return NULL;
4246
4247 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4248 if (!v)
4249 return ERR_PTR(-ENODEV);
4250
4251 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4252 ret = -EINVAL;
4253 goto error;
4254 }
4255
4256 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4257 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4258 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4259 ret = -EINVAL;
4260 goto error;
4261 }
4262
4263 if (!netif_running(v)) {
4264 ret = -ENETDOWN;
4265 goto error;
4266 }
4267
4268 return v;
4269 error:
4270 dev_put(v);
4271 return ERR_PTR(ret);
4272 }
4273
4274 static const struct nla_policy
4275 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4276 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4277 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4278 };
4279
4280 static int nl80211_parse_sta_wme(struct genl_info *info,
4281 struct station_parameters *params)
4282 {
4283 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4284 struct nlattr *nla;
4285 int err;
4286
4287 /* parse WME attributes if present */
4288 if (!info->attrs[NL80211_ATTR_STA_WME])
4289 return 0;
4290
4291 nla = info->attrs[NL80211_ATTR_STA_WME];
4292 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4293 nl80211_sta_wme_policy);
4294 if (err)
4295 return err;
4296
4297 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4298 params->uapsd_queues = nla_get_u8(
4299 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4300 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4301 return -EINVAL;
4302
4303 if (tb[NL80211_STA_WME_MAX_SP])
4304 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4305
4306 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4307 return -EINVAL;
4308
4309 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4310
4311 return 0;
4312 }
4313
4314 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4315 struct station_parameters *params)
4316 {
4317 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4318 params->supported_channels =
4319 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4320 params->supported_channels_len =
4321 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4322 /*
4323 * Need to include at least one (first channel, number of
4324 * channels) tuple for each subband, and must have proper
4325 * tuples for the rest of the data as well.
4326 */
4327 if (params->supported_channels_len < 2)
4328 return -EINVAL;
4329 if (params->supported_channels_len % 2)
4330 return -EINVAL;
4331 }
4332
4333 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4334 params->supported_oper_classes =
4335 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4336 params->supported_oper_classes_len =
4337 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4338 /*
4339 * The value of the Length field of the Supported Operating
4340 * Classes element is between 2 and 253.
4341 */
4342 if (params->supported_oper_classes_len < 2 ||
4343 params->supported_oper_classes_len > 253)
4344 return -EINVAL;
4345 }
4346 return 0;
4347 }
4348
4349 static int nl80211_set_station_tdls(struct genl_info *info,
4350 struct station_parameters *params)
4351 {
4352 int err;
4353 /* Dummy STA entry gets updated once the peer capabilities are known */
4354 if (info->attrs[NL80211_ATTR_PEER_AID])
4355 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4356 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4357 params->ht_capa =
4358 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4359 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4360 params->vht_capa =
4361 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4362
4363 err = nl80211_parse_sta_channel_info(info, params);
4364 if (err)
4365 return err;
4366
4367 return nl80211_parse_sta_wme(info, params);
4368 }
4369
4370 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4371 {
4372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4373 struct net_device *dev = info->user_ptr[1];
4374 struct station_parameters params;
4375 u8 *mac_addr;
4376 int err;
4377
4378 memset(&params, 0, sizeof(params));
4379
4380 if (!rdev->ops->change_station)
4381 return -EOPNOTSUPP;
4382
4383 /*
4384 * AID and listen_interval properties can be set only for unassociated
4385 * station. Include these parameters here and will check them in
4386 * cfg80211_check_station_change().
4387 */
4388 if (info->attrs[NL80211_ATTR_STA_AID])
4389 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4390
4391 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4392 params.listen_interval =
4393 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4394 else
4395 params.listen_interval = -1;
4396
4397 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4398 u8 tmp;
4399
4400 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4401 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4402 return -EINVAL;
4403
4404 params.support_p2p_ps = tmp;
4405 } else {
4406 params.support_p2p_ps = -1;
4407 }
4408
4409 if (!info->attrs[NL80211_ATTR_MAC])
4410 return -EINVAL;
4411
4412 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4413
4414 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4415 params.supported_rates =
4416 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4417 params.supported_rates_len =
4418 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4419 }
4420
4421 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4422 params.capability =
4423 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4424 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4425 }
4426
4427 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4428 params.ext_capab =
4429 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4430 params.ext_capab_len =
4431 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4432 }
4433
4434 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4435 return -EINVAL;
4436
4437 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4438 params.plink_action =
4439 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4440 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4441 return -EINVAL;
4442 }
4443
4444 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4445 params.plink_state =
4446 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4447 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4448 return -EINVAL;
4449 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4450 params.peer_aid = nla_get_u16(
4451 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4452 if (params.peer_aid > IEEE80211_MAX_AID)
4453 return -EINVAL;
4454 }
4455 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4456 }
4457
4458 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4459 enum nl80211_mesh_power_mode pm = nla_get_u32(
4460 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4461
4462 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4463 pm > NL80211_MESH_POWER_MAX)
4464 return -EINVAL;
4465
4466 params.local_pm = pm;
4467 }
4468
4469 /* Include parameters for TDLS peer (will check later) */
4470 err = nl80211_set_station_tdls(info, &params);
4471 if (err)
4472 return err;
4473
4474 params.vlan = get_vlan(info, rdev);
4475 if (IS_ERR(params.vlan))
4476 return PTR_ERR(params.vlan);
4477
4478 switch (dev->ieee80211_ptr->iftype) {
4479 case NL80211_IFTYPE_AP:
4480 case NL80211_IFTYPE_AP_VLAN:
4481 case NL80211_IFTYPE_P2P_GO:
4482 case NL80211_IFTYPE_P2P_CLIENT:
4483 case NL80211_IFTYPE_STATION:
4484 case NL80211_IFTYPE_ADHOC:
4485 case NL80211_IFTYPE_MESH_POINT:
4486 break;
4487 default:
4488 err = -EOPNOTSUPP;
4489 goto out_put_vlan;
4490 }
4491
4492 /* driver will call cfg80211_check_station_change() */
4493 err = rdev_change_station(rdev, dev, mac_addr, &params);
4494
4495 out_put_vlan:
4496 if (params.vlan)
4497 dev_put(params.vlan);
4498
4499 return err;
4500 }
4501
4502 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4503 {
4504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4505 int err;
4506 struct net_device *dev = info->user_ptr[1];
4507 struct station_parameters params;
4508 u8 *mac_addr = NULL;
4509 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4510 BIT(NL80211_STA_FLAG_ASSOCIATED);
4511
4512 memset(&params, 0, sizeof(params));
4513
4514 if (!rdev->ops->add_station)
4515 return -EOPNOTSUPP;
4516
4517 if (!info->attrs[NL80211_ATTR_MAC])
4518 return -EINVAL;
4519
4520 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4521 return -EINVAL;
4522
4523 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4524 return -EINVAL;
4525
4526 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4527 !info->attrs[NL80211_ATTR_PEER_AID])
4528 return -EINVAL;
4529
4530 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4531 params.supported_rates =
4532 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4533 params.supported_rates_len =
4534 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4535 params.listen_interval =
4536 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4537
4538 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4539 u8 tmp;
4540
4541 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4542 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4543 return -EINVAL;
4544
4545 params.support_p2p_ps = tmp;
4546 } else {
4547 /*
4548 * if not specified, assume it's supported for P2P GO interface,
4549 * and is NOT supported for AP interface
4550 */
4551 params.support_p2p_ps =
4552 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4553 }
4554
4555 if (info->attrs[NL80211_ATTR_PEER_AID])
4556 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4557 else
4558 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4559 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4560 return -EINVAL;
4561
4562 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4563 params.capability =
4564 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4565 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4566 }
4567
4568 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4569 params.ext_capab =
4570 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4571 params.ext_capab_len =
4572 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4573 }
4574
4575 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4576 params.ht_capa =
4577 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4578
4579 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4580 params.vht_capa =
4581 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4582
4583 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4584 params.opmode_notif_used = true;
4585 params.opmode_notif =
4586 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4587 }
4588
4589 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4590 params.plink_action =
4591 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4592 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4593 return -EINVAL;
4594 }
4595
4596 err = nl80211_parse_sta_channel_info(info, &params);
4597 if (err)
4598 return err;
4599
4600 err = nl80211_parse_sta_wme(info, &params);
4601 if (err)
4602 return err;
4603
4604 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4605 return -EINVAL;
4606
4607 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4608 * as userspace might just pass through the capabilities from the IEs
4609 * directly, rather than enforcing this restriction and returning an
4610 * error in this case.
4611 */
4612 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4613 params.ht_capa = NULL;
4614 params.vht_capa = NULL;
4615 }
4616
4617 /* When you run into this, adjust the code below for the new flag */
4618 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4619
4620 switch (dev->ieee80211_ptr->iftype) {
4621 case NL80211_IFTYPE_AP:
4622 case NL80211_IFTYPE_AP_VLAN:
4623 case NL80211_IFTYPE_P2P_GO:
4624 /* ignore WME attributes if iface/sta is not capable */
4625 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4626 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4627 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4628
4629 /* TDLS peers cannot be added */
4630 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4631 info->attrs[NL80211_ATTR_PEER_AID])
4632 return -EINVAL;
4633 /* but don't bother the driver with it */
4634 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4635
4636 /* allow authenticated/associated only if driver handles it */
4637 if (!(rdev->wiphy.features &
4638 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4639 params.sta_flags_mask & auth_assoc)
4640 return -EINVAL;
4641
4642 /* Older userspace, or userspace wanting to be compatible with
4643 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
4644 * and assoc flags in the mask, but assumes the station will be
4645 * added as associated anyway since this was the required driver
4646 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
4647 * introduced.
4648 * In order to not bother drivers with this quirk in the API
4649 * set the flags in both the mask and set for new stations in
4650 * this case.
4651 */
4652 if (!(params.sta_flags_mask & auth_assoc)) {
4653 params.sta_flags_mask |= auth_assoc;
4654 params.sta_flags_set |= auth_assoc;
4655 }
4656
4657 /* must be last in here for error handling */
4658 params.vlan = get_vlan(info, rdev);
4659 if (IS_ERR(params.vlan))
4660 return PTR_ERR(params.vlan);
4661 break;
4662 case NL80211_IFTYPE_MESH_POINT:
4663 /* ignore uAPSD data */
4664 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4665
4666 /* associated is disallowed */
4667 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4668 return -EINVAL;
4669 /* TDLS peers cannot be added */
4670 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4671 info->attrs[NL80211_ATTR_PEER_AID])
4672 return -EINVAL;
4673 break;
4674 case NL80211_IFTYPE_STATION:
4675 case NL80211_IFTYPE_P2P_CLIENT:
4676 /* ignore uAPSD data */
4677 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4678
4679 /* these are disallowed */
4680 if (params.sta_flags_mask &
4681 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4682 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4683 return -EINVAL;
4684 /* Only TDLS peers can be added */
4685 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4686 return -EINVAL;
4687 /* Can only add if TDLS ... */
4688 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4689 return -EOPNOTSUPP;
4690 /* ... with external setup is supported */
4691 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4692 return -EOPNOTSUPP;
4693 /*
4694 * Older wpa_supplicant versions always mark the TDLS peer
4695 * as authorized, but it shouldn't yet be.
4696 */
4697 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4698 break;
4699 default:
4700 return -EOPNOTSUPP;
4701 }
4702
4703 /* be aware of params.vlan when changing code here */
4704
4705 err = rdev_add_station(rdev, dev, mac_addr, &params);
4706
4707 if (params.vlan)
4708 dev_put(params.vlan);
4709 return err;
4710 }
4711
4712 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4713 {
4714 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4715 struct net_device *dev = info->user_ptr[1];
4716 struct station_del_parameters params;
4717
4718 memset(&params, 0, sizeof(params));
4719
4720 if (info->attrs[NL80211_ATTR_MAC])
4721 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4722
4723 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4724 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4725 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4726 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4727 return -EINVAL;
4728
4729 if (!rdev->ops->del_station)
4730 return -EOPNOTSUPP;
4731
4732 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4733 params.subtype =
4734 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4735 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4736 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4737 return -EINVAL;
4738 } else {
4739 /* Default to Deauthentication frame */
4740 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4741 }
4742
4743 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4744 params.reason_code =
4745 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4746 if (params.reason_code == 0)
4747 return -EINVAL; /* 0 is reserved */
4748 } else {
4749 /* Default to reason code 2 */
4750 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4751 }
4752
4753 return rdev_del_station(rdev, dev, &params);
4754 }
4755
4756 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4757 int flags, struct net_device *dev,
4758 u8 *dst, u8 *next_hop,
4759 struct mpath_info *pinfo)
4760 {
4761 void *hdr;
4762 struct nlattr *pinfoattr;
4763
4764 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4765 if (!hdr)
4766 return -1;
4767
4768 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4769 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4770 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4771 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4772 goto nla_put_failure;
4773
4774 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4775 if (!pinfoattr)
4776 goto nla_put_failure;
4777 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4778 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4779 pinfo->frame_qlen))
4780 goto nla_put_failure;
4781 if (((pinfo->filled & MPATH_INFO_SN) &&
4782 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4783 ((pinfo->filled & MPATH_INFO_METRIC) &&
4784 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4785 pinfo->metric)) ||
4786 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4787 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4788 pinfo->exptime)) ||
4789 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4790 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4791 pinfo->flags)) ||
4792 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4793 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4794 pinfo->discovery_timeout)) ||
4795 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4796 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4797 pinfo->discovery_retries)))
4798 goto nla_put_failure;
4799
4800 nla_nest_end(msg, pinfoattr);
4801
4802 genlmsg_end(msg, hdr);
4803 return 0;
4804
4805 nla_put_failure:
4806 genlmsg_cancel(msg, hdr);
4807 return -EMSGSIZE;
4808 }
4809
4810 static int nl80211_dump_mpath(struct sk_buff *skb,
4811 struct netlink_callback *cb)
4812 {
4813 struct mpath_info pinfo;
4814 struct cfg80211_registered_device *rdev;
4815 struct wireless_dev *wdev;
4816 u8 dst[ETH_ALEN];
4817 u8 next_hop[ETH_ALEN];
4818 int path_idx = cb->args[2];
4819 int err;
4820
4821 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4822 if (err)
4823 return err;
4824
4825 if (!rdev->ops->dump_mpath) {
4826 err = -EOPNOTSUPP;
4827 goto out_err;
4828 }
4829
4830 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4831 err = -EOPNOTSUPP;
4832 goto out_err;
4833 }
4834
4835 while (1) {
4836 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4837 next_hop, &pinfo);
4838 if (err == -ENOENT)
4839 break;
4840 if (err)
4841 goto out_err;
4842
4843 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4844 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4845 wdev->netdev, dst, next_hop,
4846 &pinfo) < 0)
4847 goto out;
4848
4849 path_idx++;
4850 }
4851
4852 out:
4853 cb->args[2] = path_idx;
4854 err = skb->len;
4855 out_err:
4856 nl80211_finish_wdev_dump(rdev);
4857 return err;
4858 }
4859
4860 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4861 {
4862 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4863 int err;
4864 struct net_device *dev = info->user_ptr[1];
4865 struct mpath_info pinfo;
4866 struct sk_buff *msg;
4867 u8 *dst = NULL;
4868 u8 next_hop[ETH_ALEN];
4869
4870 memset(&pinfo, 0, sizeof(pinfo));
4871
4872 if (!info->attrs[NL80211_ATTR_MAC])
4873 return -EINVAL;
4874
4875 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4876
4877 if (!rdev->ops->get_mpath)
4878 return -EOPNOTSUPP;
4879
4880 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4881 return -EOPNOTSUPP;
4882
4883 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4884 if (err)
4885 return err;
4886
4887 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4888 if (!msg)
4889 return -ENOMEM;
4890
4891 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4892 dev, dst, next_hop, &pinfo) < 0) {
4893 nlmsg_free(msg);
4894 return -ENOBUFS;
4895 }
4896
4897 return genlmsg_reply(msg, info);
4898 }
4899
4900 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4901 {
4902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4903 struct net_device *dev = info->user_ptr[1];
4904 u8 *dst = NULL;
4905 u8 *next_hop = NULL;
4906
4907 if (!info->attrs[NL80211_ATTR_MAC])
4908 return -EINVAL;
4909
4910 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4911 return -EINVAL;
4912
4913 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4914 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4915
4916 if (!rdev->ops->change_mpath)
4917 return -EOPNOTSUPP;
4918
4919 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4920 return -EOPNOTSUPP;
4921
4922 return rdev_change_mpath(rdev, dev, dst, next_hop);
4923 }
4924
4925 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4926 {
4927 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4928 struct net_device *dev = info->user_ptr[1];
4929 u8 *dst = NULL;
4930 u8 *next_hop = NULL;
4931
4932 if (!info->attrs[NL80211_ATTR_MAC])
4933 return -EINVAL;
4934
4935 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4936 return -EINVAL;
4937
4938 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4939 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4940
4941 if (!rdev->ops->add_mpath)
4942 return -EOPNOTSUPP;
4943
4944 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4945 return -EOPNOTSUPP;
4946
4947 return rdev_add_mpath(rdev, dev, dst, next_hop);
4948 }
4949
4950 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4951 {
4952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4953 struct net_device *dev = info->user_ptr[1];
4954 u8 *dst = NULL;
4955
4956 if (info->attrs[NL80211_ATTR_MAC])
4957 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4958
4959 if (!rdev->ops->del_mpath)
4960 return -EOPNOTSUPP;
4961
4962 return rdev_del_mpath(rdev, dev, dst);
4963 }
4964
4965 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4966 {
4967 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4968 int err;
4969 struct net_device *dev = info->user_ptr[1];
4970 struct mpath_info pinfo;
4971 struct sk_buff *msg;
4972 u8 *dst = NULL;
4973 u8 mpp[ETH_ALEN];
4974
4975 memset(&pinfo, 0, sizeof(pinfo));
4976
4977 if (!info->attrs[NL80211_ATTR_MAC])
4978 return -EINVAL;
4979
4980 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4981
4982 if (!rdev->ops->get_mpp)
4983 return -EOPNOTSUPP;
4984
4985 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4986 return -EOPNOTSUPP;
4987
4988 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4989 if (err)
4990 return err;
4991
4992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4993 if (!msg)
4994 return -ENOMEM;
4995
4996 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4997 dev, dst, mpp, &pinfo) < 0) {
4998 nlmsg_free(msg);
4999 return -ENOBUFS;
5000 }
5001
5002 return genlmsg_reply(msg, info);
5003 }
5004
5005 static int nl80211_dump_mpp(struct sk_buff *skb,
5006 struct netlink_callback *cb)
5007 {
5008 struct mpath_info pinfo;
5009 struct cfg80211_registered_device *rdev;
5010 struct wireless_dev *wdev;
5011 u8 dst[ETH_ALEN];
5012 u8 mpp[ETH_ALEN];
5013 int path_idx = cb->args[2];
5014 int err;
5015
5016 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5017 if (err)
5018 return err;
5019
5020 if (!rdev->ops->dump_mpp) {
5021 err = -EOPNOTSUPP;
5022 goto out_err;
5023 }
5024
5025 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5026 err = -EOPNOTSUPP;
5027 goto out_err;
5028 }
5029
5030 while (1) {
5031 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5032 mpp, &pinfo);
5033 if (err == -ENOENT)
5034 break;
5035 if (err)
5036 goto out_err;
5037
5038 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5039 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5040 wdev->netdev, dst, mpp,
5041 &pinfo) < 0)
5042 goto out;
5043
5044 path_idx++;
5045 }
5046
5047 out:
5048 cb->args[2] = path_idx;
5049 err = skb->len;
5050 out_err:
5051 nl80211_finish_wdev_dump(rdev);
5052 return err;
5053 }
5054
5055 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5056 {
5057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5058 struct net_device *dev = info->user_ptr[1];
5059 struct wireless_dev *wdev = dev->ieee80211_ptr;
5060 struct bss_parameters params;
5061 int err;
5062
5063 memset(&params, 0, sizeof(params));
5064 /* default to not changing parameters */
5065 params.use_cts_prot = -1;
5066 params.use_short_preamble = -1;
5067 params.use_short_slot_time = -1;
5068 params.ap_isolate = -1;
5069 params.ht_opmode = -1;
5070 params.p2p_ctwindow = -1;
5071 params.p2p_opp_ps = -1;
5072
5073 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5074 params.use_cts_prot =
5075 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5076 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5077 params.use_short_preamble =
5078 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5079 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5080 params.use_short_slot_time =
5081 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5082 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5083 params.basic_rates =
5084 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5085 params.basic_rates_len =
5086 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5087 }
5088 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5089 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5090 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5091 params.ht_opmode =
5092 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5093
5094 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5095 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5096 return -EINVAL;
5097 params.p2p_ctwindow =
5098 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5099 if (params.p2p_ctwindow < 0)
5100 return -EINVAL;
5101 if (params.p2p_ctwindow != 0 &&
5102 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5103 return -EINVAL;
5104 }
5105
5106 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5107 u8 tmp;
5108
5109 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5110 return -EINVAL;
5111 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5112 if (tmp > 1)
5113 return -EINVAL;
5114 params.p2p_opp_ps = tmp;
5115 if (params.p2p_opp_ps &&
5116 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5117 return -EINVAL;
5118 }
5119
5120 if (!rdev->ops->change_bss)
5121 return -EOPNOTSUPP;
5122
5123 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5124 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5125 return -EOPNOTSUPP;
5126
5127 wdev_lock(wdev);
5128 err = rdev_change_bss(rdev, dev, &params);
5129 wdev_unlock(wdev);
5130
5131 return err;
5132 }
5133
5134 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5135 {
5136 char *data = NULL;
5137 bool is_indoor;
5138 enum nl80211_user_reg_hint_type user_reg_hint_type;
5139 u32 owner_nlportid;
5140
5141 /*
5142 * You should only get this when cfg80211 hasn't yet initialized
5143 * completely when built-in to the kernel right between the time
5144 * window between nl80211_init() and regulatory_init(), if that is
5145 * even possible.
5146 */
5147 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5148 return -EINPROGRESS;
5149
5150 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5151 user_reg_hint_type =
5152 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5153 else
5154 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5155
5156 switch (user_reg_hint_type) {
5157 case NL80211_USER_REG_HINT_USER:
5158 case NL80211_USER_REG_HINT_CELL_BASE:
5159 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5160 return -EINVAL;
5161
5162 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5163 return regulatory_hint_user(data, user_reg_hint_type);
5164 case NL80211_USER_REG_HINT_INDOOR:
5165 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5166 owner_nlportid = info->snd_portid;
5167 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5168 } else {
5169 owner_nlportid = 0;
5170 is_indoor = true;
5171 }
5172
5173 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5174 default:
5175 return -EINVAL;
5176 }
5177 }
5178
5179 static int nl80211_get_mesh_config(struct sk_buff *skb,
5180 struct genl_info *info)
5181 {
5182 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5183 struct net_device *dev = info->user_ptr[1];
5184 struct wireless_dev *wdev = dev->ieee80211_ptr;
5185 struct mesh_config cur_params;
5186 int err = 0;
5187 void *hdr;
5188 struct nlattr *pinfoattr;
5189 struct sk_buff *msg;
5190
5191 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5192 return -EOPNOTSUPP;
5193
5194 if (!rdev->ops->get_mesh_config)
5195 return -EOPNOTSUPP;
5196
5197 wdev_lock(wdev);
5198 /* If not connected, get default parameters */
5199 if (!wdev->mesh_id_len)
5200 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5201 else
5202 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5203 wdev_unlock(wdev);
5204
5205 if (err)
5206 return err;
5207
5208 /* Draw up a netlink message to send back */
5209 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5210 if (!msg)
5211 return -ENOMEM;
5212 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5213 NL80211_CMD_GET_MESH_CONFIG);
5214 if (!hdr)
5215 goto out;
5216 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5217 if (!pinfoattr)
5218 goto nla_put_failure;
5219 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5220 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5221 cur_params.dot11MeshRetryTimeout) ||
5222 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5223 cur_params.dot11MeshConfirmTimeout) ||
5224 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5225 cur_params.dot11MeshHoldingTimeout) ||
5226 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5227 cur_params.dot11MeshMaxPeerLinks) ||
5228 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5229 cur_params.dot11MeshMaxRetries) ||
5230 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5231 cur_params.dot11MeshTTL) ||
5232 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5233 cur_params.element_ttl) ||
5234 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5235 cur_params.auto_open_plinks) ||
5236 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5237 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5238 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5239 cur_params.dot11MeshHWMPmaxPREQretries) ||
5240 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5241 cur_params.path_refresh_time) ||
5242 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5243 cur_params.min_discovery_timeout) ||
5244 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5245 cur_params.dot11MeshHWMPactivePathTimeout) ||
5246 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5247 cur_params.dot11MeshHWMPpreqMinInterval) ||
5248 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5249 cur_params.dot11MeshHWMPperrMinInterval) ||
5250 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5251 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5252 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5253 cur_params.dot11MeshHWMPRootMode) ||
5254 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5255 cur_params.dot11MeshHWMPRannInterval) ||
5256 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5257 cur_params.dot11MeshGateAnnouncementProtocol) ||
5258 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5259 cur_params.dot11MeshForwarding) ||
5260 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5261 cur_params.rssi_threshold) ||
5262 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5263 cur_params.ht_opmode) ||
5264 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5265 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5266 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5267 cur_params.dot11MeshHWMProotInterval) ||
5268 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5269 cur_params.dot11MeshHWMPconfirmationInterval) ||
5270 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5271 cur_params.power_mode) ||
5272 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5273 cur_params.dot11MeshAwakeWindowDuration) ||
5274 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5275 cur_params.plink_timeout))
5276 goto nla_put_failure;
5277 nla_nest_end(msg, pinfoattr);
5278 genlmsg_end(msg, hdr);
5279 return genlmsg_reply(msg, info);
5280
5281 nla_put_failure:
5282 genlmsg_cancel(msg, hdr);
5283 out:
5284 nlmsg_free(msg);
5285 return -ENOBUFS;
5286 }
5287
5288 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5289 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5290 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5291 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5292 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5293 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5294 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5295 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5296 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5297 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5298 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5299 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5300 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5301 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5302 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5303 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5304 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5305 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5306 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5307 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5308 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5309 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5310 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5311 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5312 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5313 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5314 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5315 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5316 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5317 };
5318
5319 static const struct nla_policy
5320 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5321 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5322 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5323 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5324 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5325 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5326 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5327 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5328 .len = IEEE80211_MAX_DATA_LEN },
5329 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5330 };
5331
5332 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5333 {
5334 u8 val = nla_get_u8(nla);
5335 if (val < min || val > max)
5336 return -EINVAL;
5337 *out = val;
5338 return 0;
5339 }
5340
5341 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5342 {
5343 u8 val = nla_get_u8(nla);
5344 if (val < min || val > max)
5345 return -EINVAL;
5346 *out = val;
5347 return 0;
5348 }
5349
5350 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5351 {
5352 u16 val = nla_get_u16(nla);
5353 if (val < min || val > max)
5354 return -EINVAL;
5355 *out = val;
5356 return 0;
5357 }
5358
5359 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5360 {
5361 u32 val = nla_get_u32(nla);
5362 if (val < min || val > max)
5363 return -EINVAL;
5364 *out = val;
5365 return 0;
5366 }
5367
5368 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5369 {
5370 s32 val = nla_get_s32(nla);
5371 if (val < min || val > max)
5372 return -EINVAL;
5373 *out = val;
5374 return 0;
5375 }
5376
5377 static int nl80211_parse_mesh_config(struct genl_info *info,
5378 struct mesh_config *cfg,
5379 u32 *mask_out)
5380 {
5381 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5382 u32 mask = 0;
5383
5384 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5385 do { \
5386 if (tb[attr]) { \
5387 if (fn(tb[attr], min, max, &cfg->param)) \
5388 return -EINVAL; \
5389 mask |= (1 << (attr - 1)); \
5390 } \
5391 } while (0)
5392
5393 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5394 return -EINVAL;
5395 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5396 info->attrs[NL80211_ATTR_MESH_CONFIG],
5397 nl80211_meshconf_params_policy))
5398 return -EINVAL;
5399
5400 /* This makes sure that there aren't more than 32 mesh config
5401 * parameters (otherwise our bitfield scheme would not work.) */
5402 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5403
5404 /* Fill in the params struct */
5405 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5406 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5407 nl80211_check_u16);
5408 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5409 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5410 nl80211_check_u16);
5411 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5412 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5413 nl80211_check_u16);
5414 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5415 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5416 nl80211_check_u16);
5417 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5418 mask, NL80211_MESHCONF_MAX_RETRIES,
5419 nl80211_check_u8);
5420 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5421 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5422 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5423 mask, NL80211_MESHCONF_ELEMENT_TTL,
5424 nl80211_check_u8);
5425 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5426 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5427 nl80211_check_bool);
5428 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5429 1, 255, mask,
5430 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5431 nl80211_check_u32);
5432 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5433 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5434 nl80211_check_u8);
5435 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5436 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5437 nl80211_check_u32);
5438 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5439 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5440 nl80211_check_u16);
5441 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5442 1, 65535, mask,
5443 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5444 nl80211_check_u32);
5445 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5446 1, 65535, mask,
5447 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5448 nl80211_check_u16);
5449 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5450 1, 65535, mask,
5451 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5452 nl80211_check_u16);
5453 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5454 dot11MeshHWMPnetDiameterTraversalTime,
5455 1, 65535, mask,
5456 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5457 nl80211_check_u16);
5458 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5459 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5460 nl80211_check_u8);
5461 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5462 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5463 nl80211_check_u16);
5464 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5465 dot11MeshGateAnnouncementProtocol, 0, 1,
5466 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5467 nl80211_check_bool);
5468 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5469 mask, NL80211_MESHCONF_FORWARDING,
5470 nl80211_check_bool);
5471 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5472 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5473 nl80211_check_s32);
5474 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5475 mask, NL80211_MESHCONF_HT_OPMODE,
5476 nl80211_check_u16);
5477 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5478 1, 65535, mask,
5479 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5480 nl80211_check_u32);
5481 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5482 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5483 nl80211_check_u16);
5484 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5485 dot11MeshHWMPconfirmationInterval,
5486 1, 65535, mask,
5487 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5488 nl80211_check_u16);
5489 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5490 NL80211_MESH_POWER_ACTIVE,
5491 NL80211_MESH_POWER_MAX,
5492 mask, NL80211_MESHCONF_POWER_MODE,
5493 nl80211_check_u32);
5494 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5495 0, 65535, mask,
5496 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5497 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5498 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5499 nl80211_check_u32);
5500 if (mask_out)
5501 *mask_out = mask;
5502
5503 return 0;
5504
5505 #undef FILL_IN_MESH_PARAM_IF_SET
5506 }
5507
5508 static int nl80211_parse_mesh_setup(struct genl_info *info,
5509 struct mesh_setup *setup)
5510 {
5511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5512 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5513
5514 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5515 return -EINVAL;
5516 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5517 info->attrs[NL80211_ATTR_MESH_SETUP],
5518 nl80211_mesh_setup_params_policy))
5519 return -EINVAL;
5520
5521 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5522 setup->sync_method =
5523 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5524 IEEE80211_SYNC_METHOD_VENDOR :
5525 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5526
5527 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5528 setup->path_sel_proto =
5529 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5530 IEEE80211_PATH_PROTOCOL_VENDOR :
5531 IEEE80211_PATH_PROTOCOL_HWMP;
5532
5533 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5534 setup->path_metric =
5535 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5536 IEEE80211_PATH_METRIC_VENDOR :
5537 IEEE80211_PATH_METRIC_AIRTIME;
5538
5539 if (tb[NL80211_MESH_SETUP_IE]) {
5540 struct nlattr *ieattr =
5541 tb[NL80211_MESH_SETUP_IE];
5542 if (!is_valid_ie_attr(ieattr))
5543 return -EINVAL;
5544 setup->ie = nla_data(ieattr);
5545 setup->ie_len = nla_len(ieattr);
5546 }
5547 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5548 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5549 return -EINVAL;
5550 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5551 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5552 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5553 if (setup->is_secure)
5554 setup->user_mpm = true;
5555
5556 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5557 if (!setup->user_mpm)
5558 return -EINVAL;
5559 setup->auth_id =
5560 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5561 }
5562
5563 return 0;
5564 }
5565
5566 static int nl80211_update_mesh_config(struct sk_buff *skb,
5567 struct genl_info *info)
5568 {
5569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5570 struct net_device *dev = info->user_ptr[1];
5571 struct wireless_dev *wdev = dev->ieee80211_ptr;
5572 struct mesh_config cfg;
5573 u32 mask;
5574 int err;
5575
5576 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5577 return -EOPNOTSUPP;
5578
5579 if (!rdev->ops->update_mesh_config)
5580 return -EOPNOTSUPP;
5581
5582 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5583 if (err)
5584 return err;
5585
5586 wdev_lock(wdev);
5587 if (!wdev->mesh_id_len)
5588 err = -ENOLINK;
5589
5590 if (!err)
5591 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5592
5593 wdev_unlock(wdev);
5594
5595 return err;
5596 }
5597
5598 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5599 struct sk_buff *msg)
5600 {
5601 struct nlattr *nl_reg_rules;
5602 unsigned int i;
5603
5604 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5605 (regdom->dfs_region &&
5606 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5607 goto nla_put_failure;
5608
5609 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5610 if (!nl_reg_rules)
5611 goto nla_put_failure;
5612
5613 for (i = 0; i < regdom->n_reg_rules; i++) {
5614 struct nlattr *nl_reg_rule;
5615 const struct ieee80211_reg_rule *reg_rule;
5616 const struct ieee80211_freq_range *freq_range;
5617 const struct ieee80211_power_rule *power_rule;
5618 unsigned int max_bandwidth_khz;
5619
5620 reg_rule = &regdom->reg_rules[i];
5621 freq_range = &reg_rule->freq_range;
5622 power_rule = &reg_rule->power_rule;
5623
5624 nl_reg_rule = nla_nest_start(msg, i);
5625 if (!nl_reg_rule)
5626 goto nla_put_failure;
5627
5628 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5629 if (!max_bandwidth_khz)
5630 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5631 reg_rule);
5632
5633 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5634 reg_rule->flags) ||
5635 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5636 freq_range->start_freq_khz) ||
5637 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5638 freq_range->end_freq_khz) ||
5639 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5640 max_bandwidth_khz) ||
5641 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5642 power_rule->max_antenna_gain) ||
5643 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5644 power_rule->max_eirp) ||
5645 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5646 reg_rule->dfs_cac_ms))
5647 goto nla_put_failure;
5648
5649 nla_nest_end(msg, nl_reg_rule);
5650 }
5651
5652 nla_nest_end(msg, nl_reg_rules);
5653 return 0;
5654
5655 nla_put_failure:
5656 return -EMSGSIZE;
5657 }
5658
5659 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5660 {
5661 const struct ieee80211_regdomain *regdom = NULL;
5662 struct cfg80211_registered_device *rdev;
5663 struct wiphy *wiphy = NULL;
5664 struct sk_buff *msg;
5665 void *hdr;
5666
5667 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5668 if (!msg)
5669 return -ENOBUFS;
5670
5671 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5672 NL80211_CMD_GET_REG);
5673 if (!hdr)
5674 goto put_failure;
5675
5676 if (info->attrs[NL80211_ATTR_WIPHY]) {
5677 bool self_managed;
5678
5679 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5680 if (IS_ERR(rdev)) {
5681 nlmsg_free(msg);
5682 return PTR_ERR(rdev);
5683 }
5684
5685 wiphy = &rdev->wiphy;
5686 self_managed = wiphy->regulatory_flags &
5687 REGULATORY_WIPHY_SELF_MANAGED;
5688 regdom = get_wiphy_regdom(wiphy);
5689
5690 /* a self-managed-reg device must have a private regdom */
5691 if (WARN_ON(!regdom && self_managed)) {
5692 nlmsg_free(msg);
5693 return -EINVAL;
5694 }
5695
5696 if (regdom &&
5697 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5698 goto nla_put_failure;
5699 }
5700
5701 if (!wiphy && reg_last_request_cell_base() &&
5702 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5703 NL80211_USER_REG_HINT_CELL_BASE))
5704 goto nla_put_failure;
5705
5706 rcu_read_lock();
5707
5708 if (!regdom)
5709 regdom = rcu_dereference(cfg80211_regdomain);
5710
5711 if (nl80211_put_regdom(regdom, msg))
5712 goto nla_put_failure_rcu;
5713
5714 rcu_read_unlock();
5715
5716 genlmsg_end(msg, hdr);
5717 return genlmsg_reply(msg, info);
5718
5719 nla_put_failure_rcu:
5720 rcu_read_unlock();
5721 nla_put_failure:
5722 genlmsg_cancel(msg, hdr);
5723 put_failure:
5724 nlmsg_free(msg);
5725 return -EMSGSIZE;
5726 }
5727
5728 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5729 u32 seq, int flags, struct wiphy *wiphy,
5730 const struct ieee80211_regdomain *regdom)
5731 {
5732 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5733 NL80211_CMD_GET_REG);
5734
5735 if (!hdr)
5736 return -1;
5737
5738 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5739
5740 if (nl80211_put_regdom(regdom, msg))
5741 goto nla_put_failure;
5742
5743 if (!wiphy && reg_last_request_cell_base() &&
5744 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5745 NL80211_USER_REG_HINT_CELL_BASE))
5746 goto nla_put_failure;
5747
5748 if (wiphy &&
5749 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5750 goto nla_put_failure;
5751
5752 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5753 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5754 goto nla_put_failure;
5755
5756 genlmsg_end(msg, hdr);
5757 return 0;
5758
5759 nla_put_failure:
5760 genlmsg_cancel(msg, hdr);
5761 return -EMSGSIZE;
5762 }
5763
5764 static int nl80211_get_reg_dump(struct sk_buff *skb,
5765 struct netlink_callback *cb)
5766 {
5767 const struct ieee80211_regdomain *regdom = NULL;
5768 struct cfg80211_registered_device *rdev;
5769 int err, reg_idx, start = cb->args[2];
5770
5771 rtnl_lock();
5772
5773 if (cfg80211_regdomain && start == 0) {
5774 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5775 NLM_F_MULTI, NULL,
5776 rtnl_dereference(cfg80211_regdomain));
5777 if (err < 0)
5778 goto out_err;
5779 }
5780
5781 /* the global regdom is idx 0 */
5782 reg_idx = 1;
5783 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5784 regdom = get_wiphy_regdom(&rdev->wiphy);
5785 if (!regdom)
5786 continue;
5787
5788 if (++reg_idx <= start)
5789 continue;
5790
5791 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5792 NLM_F_MULTI, &rdev->wiphy, regdom);
5793 if (err < 0) {
5794 reg_idx--;
5795 break;
5796 }
5797 }
5798
5799 cb->args[2] = reg_idx;
5800 err = skb->len;
5801 out_err:
5802 rtnl_unlock();
5803 return err;
5804 }
5805
5806 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5807 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5808 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5809 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5810 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5811 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5812 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5813 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5814 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
5815 };
5816
5817 static int parse_reg_rule(struct nlattr *tb[],
5818 struct ieee80211_reg_rule *reg_rule)
5819 {
5820 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5821 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5822
5823 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5824 return -EINVAL;
5825 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5826 return -EINVAL;
5827 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5828 return -EINVAL;
5829 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5830 return -EINVAL;
5831 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5832 return -EINVAL;
5833
5834 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5835
5836 freq_range->start_freq_khz =
5837 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5838 freq_range->end_freq_khz =
5839 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5840 freq_range->max_bandwidth_khz =
5841 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5842
5843 power_rule->max_eirp =
5844 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5845
5846 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5847 power_rule->max_antenna_gain =
5848 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5849
5850 if (tb[NL80211_ATTR_DFS_CAC_TIME])
5851 reg_rule->dfs_cac_ms =
5852 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5853
5854 return 0;
5855 }
5856
5857 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5858 {
5859 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5860 struct nlattr *nl_reg_rule;
5861 char *alpha2;
5862 int rem_reg_rules, r;
5863 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5864 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5865 struct ieee80211_regdomain *rd;
5866
5867 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5868 return -EINVAL;
5869
5870 if (!info->attrs[NL80211_ATTR_REG_RULES])
5871 return -EINVAL;
5872
5873 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5874
5875 if (info->attrs[NL80211_ATTR_DFS_REGION])
5876 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5877
5878 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5879 rem_reg_rules) {
5880 num_rules++;
5881 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5882 return -EINVAL;
5883 }
5884
5885 if (!reg_is_valid_request(alpha2))
5886 return -EINVAL;
5887
5888 size_of_regd = sizeof(struct ieee80211_regdomain) +
5889 num_rules * sizeof(struct ieee80211_reg_rule);
5890
5891 rd = kzalloc(size_of_regd, GFP_KERNEL);
5892 if (!rd)
5893 return -ENOMEM;
5894
5895 rd->n_reg_rules = num_rules;
5896 rd->alpha2[0] = alpha2[0];
5897 rd->alpha2[1] = alpha2[1];
5898
5899 /*
5900 * Disable DFS master mode if the DFS region was
5901 * not supported or known on this kernel.
5902 */
5903 if (reg_supported_dfs_region(dfs_region))
5904 rd->dfs_region = dfs_region;
5905
5906 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5907 rem_reg_rules) {
5908 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5909 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5910 reg_rule_policy);
5911 if (r)
5912 goto bad_reg;
5913 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5914 if (r)
5915 goto bad_reg;
5916
5917 rule_idx++;
5918
5919 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5920 r = -EINVAL;
5921 goto bad_reg;
5922 }
5923 }
5924
5925 /* set_regdom takes ownership of rd */
5926 return set_regdom(rd, REGD_SOURCE_CRDA);
5927 bad_reg:
5928 kfree(rd);
5929 return r;
5930 }
5931 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5932
5933 static int validate_scan_freqs(struct nlattr *freqs)
5934 {
5935 struct nlattr *attr1, *attr2;
5936 int n_channels = 0, tmp1, tmp2;
5937
5938 nla_for_each_nested(attr1, freqs, tmp1) {
5939 n_channels++;
5940 /*
5941 * Some hardware has a limited channel list for
5942 * scanning, and it is pretty much nonsensical
5943 * to scan for a channel twice, so disallow that
5944 * and don't require drivers to check that the
5945 * channel list they get isn't longer than what
5946 * they can scan, as long as they can scan all
5947 * the channels they registered at once.
5948 */
5949 nla_for_each_nested(attr2, freqs, tmp2)
5950 if (attr1 != attr2 &&
5951 nla_get_u32(attr1) == nla_get_u32(attr2))
5952 return 0;
5953 }
5954
5955 return n_channels;
5956 }
5957
5958 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
5959 {
5960 return b < NUM_NL80211_BANDS && wiphy->bands[b];
5961 }
5962
5963 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
5964 struct cfg80211_bss_selection *bss_select)
5965 {
5966 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
5967 struct nlattr *nest;
5968 int err;
5969 bool found = false;
5970 int i;
5971
5972 /* only process one nested attribute */
5973 nest = nla_data(nla);
5974 if (!nla_ok(nest, nla_len(nest)))
5975 return -EINVAL;
5976
5977 err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest),
5978 nla_len(nest), nl80211_bss_select_policy);
5979 if (err)
5980 return err;
5981
5982 /* only one attribute may be given */
5983 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
5984 if (attr[i]) {
5985 if (found)
5986 return -EINVAL;
5987 found = true;
5988 }
5989 }
5990
5991 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
5992
5993 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
5994 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
5995
5996 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
5997 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
5998 bss_select->param.band_pref =
5999 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6000 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6001 return -EINVAL;
6002 }
6003
6004 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6005 struct nl80211_bss_select_rssi_adjust *adj_param;
6006
6007 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6008 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6009 bss_select->param.adjust.band = adj_param->band;
6010 bss_select->param.adjust.delta = adj_param->delta;
6011 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6012 return -EINVAL;
6013 }
6014
6015 /* user-space did not provide behaviour attribute */
6016 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6017 return -EINVAL;
6018
6019 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6020 return -EINVAL;
6021
6022 return 0;
6023 }
6024
6025 static int nl80211_parse_random_mac(struct nlattr **attrs,
6026 u8 *mac_addr, u8 *mac_addr_mask)
6027 {
6028 int i;
6029
6030 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6031 eth_zero_addr(mac_addr);
6032 eth_zero_addr(mac_addr_mask);
6033 mac_addr[0] = 0x2;
6034 mac_addr_mask[0] = 0x3;
6035
6036 return 0;
6037 }
6038
6039 /* need both or none */
6040 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6041 return -EINVAL;
6042
6043 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6044 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6045
6046 /* don't allow or configure an mcast address */
6047 if (!is_multicast_ether_addr(mac_addr_mask) ||
6048 is_multicast_ether_addr(mac_addr))
6049 return -EINVAL;
6050
6051 /*
6052 * allow users to pass a MAC address that has bits set outside
6053 * of the mask, but don't bother drivers with having to deal
6054 * with such bits
6055 */
6056 for (i = 0; i < ETH_ALEN; i++)
6057 mac_addr[i] &= mac_addr_mask[i];
6058
6059 return 0;
6060 }
6061
6062 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6063 {
6064 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6065 struct wireless_dev *wdev = info->user_ptr[1];
6066 struct cfg80211_scan_request *request;
6067 struct nlattr *attr;
6068 struct wiphy *wiphy;
6069 int err, tmp, n_ssids = 0, n_channels, i;
6070 size_t ie_len;
6071
6072 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6073 return -EINVAL;
6074
6075 wiphy = &rdev->wiphy;
6076
6077 if (!rdev->ops->scan)
6078 return -EOPNOTSUPP;
6079
6080 if (rdev->scan_req || rdev->scan_msg) {
6081 err = -EBUSY;
6082 goto unlock;
6083 }
6084
6085 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6086 n_channels = validate_scan_freqs(
6087 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6088 if (!n_channels) {
6089 err = -EINVAL;
6090 goto unlock;
6091 }
6092 } else {
6093 n_channels = ieee80211_get_num_supported_channels(wiphy);
6094 }
6095
6096 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6097 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6098 n_ssids++;
6099
6100 if (n_ssids > wiphy->max_scan_ssids) {
6101 err = -EINVAL;
6102 goto unlock;
6103 }
6104
6105 if (info->attrs[NL80211_ATTR_IE])
6106 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6107 else
6108 ie_len = 0;
6109
6110 if (ie_len > wiphy->max_scan_ie_len) {
6111 err = -EINVAL;
6112 goto unlock;
6113 }
6114
6115 request = kzalloc(sizeof(*request)
6116 + sizeof(*request->ssids) * n_ssids
6117 + sizeof(*request->channels) * n_channels
6118 + ie_len, GFP_KERNEL);
6119 if (!request) {
6120 err = -ENOMEM;
6121 goto unlock;
6122 }
6123
6124 if (n_ssids)
6125 request->ssids = (void *)&request->channels[n_channels];
6126 request->n_ssids = n_ssids;
6127 if (ie_len) {
6128 if (n_ssids)
6129 request->ie = (void *)(request->ssids + n_ssids);
6130 else
6131 request->ie = (void *)(request->channels + n_channels);
6132 }
6133
6134 i = 0;
6135 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6136 /* user specified, bail out if channel not found */
6137 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6138 struct ieee80211_channel *chan;
6139
6140 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6141
6142 if (!chan) {
6143 err = -EINVAL;
6144 goto out_free;
6145 }
6146
6147 /* ignore disabled channels */
6148 if (chan->flags & IEEE80211_CHAN_DISABLED)
6149 continue;
6150
6151 request->channels[i] = chan;
6152 i++;
6153 }
6154 } else {
6155 enum nl80211_band band;
6156
6157 /* all channels */
6158 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6159 int j;
6160
6161 if (!wiphy->bands[band])
6162 continue;
6163 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6164 struct ieee80211_channel *chan;
6165
6166 chan = &wiphy->bands[band]->channels[j];
6167
6168 if (chan->flags & IEEE80211_CHAN_DISABLED)
6169 continue;
6170
6171 request->channels[i] = chan;
6172 i++;
6173 }
6174 }
6175 }
6176
6177 if (!i) {
6178 err = -EINVAL;
6179 goto out_free;
6180 }
6181
6182 request->n_channels = i;
6183
6184 i = 0;
6185 if (n_ssids) {
6186 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6187 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6188 err = -EINVAL;
6189 goto out_free;
6190 }
6191 request->ssids[i].ssid_len = nla_len(attr);
6192 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6193 i++;
6194 }
6195 }
6196
6197 if (info->attrs[NL80211_ATTR_IE]) {
6198 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6199 memcpy((void *)request->ie,
6200 nla_data(info->attrs[NL80211_ATTR_IE]),
6201 request->ie_len);
6202 }
6203
6204 for (i = 0; i < NUM_NL80211_BANDS; i++)
6205 if (wiphy->bands[i])
6206 request->rates[i] =
6207 (1 << wiphy->bands[i]->n_bitrates) - 1;
6208
6209 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6210 nla_for_each_nested(attr,
6211 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6212 tmp) {
6213 enum nl80211_band band = nla_type(attr);
6214
6215 if (band < 0 || band >= NUM_NL80211_BANDS) {
6216 err = -EINVAL;
6217 goto out_free;
6218 }
6219
6220 if (!wiphy->bands[band])
6221 continue;
6222
6223 err = ieee80211_get_ratemask(wiphy->bands[band],
6224 nla_data(attr),
6225 nla_len(attr),
6226 &request->rates[band]);
6227 if (err)
6228 goto out_free;
6229 }
6230 }
6231
6232 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6233 if (!wiphy_ext_feature_isset(wiphy,
6234 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6235 err = -EOPNOTSUPP;
6236 goto out_free;
6237 }
6238
6239 request->duration =
6240 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6241 request->duration_mandatory =
6242 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6243 }
6244
6245 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6246 request->flags = nla_get_u32(
6247 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6248 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6249 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6250 err = -EOPNOTSUPP;
6251 goto out_free;
6252 }
6253
6254 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6255 if (!(wiphy->features &
6256 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6257 err = -EOPNOTSUPP;
6258 goto out_free;
6259 }
6260
6261 if (wdev->current_bss) {
6262 err = -EOPNOTSUPP;
6263 goto out_free;
6264 }
6265
6266 err = nl80211_parse_random_mac(info->attrs,
6267 request->mac_addr,
6268 request->mac_addr_mask);
6269 if (err)
6270 goto out_free;
6271 }
6272 }
6273
6274 request->no_cck =
6275 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6276
6277 if (info->attrs[NL80211_ATTR_MAC])
6278 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6279 ETH_ALEN);
6280 else
6281 eth_broadcast_addr(request->bssid);
6282
6283 request->wdev = wdev;
6284 request->wiphy = &rdev->wiphy;
6285 request->scan_start = jiffies;
6286
6287 rdev->scan_req = request;
6288 err = rdev_scan(rdev, request);
6289
6290 if (!err) {
6291 nl80211_send_scan_start(rdev, wdev);
6292 if (wdev->netdev)
6293 dev_hold(wdev->netdev);
6294 } else {
6295 out_free:
6296 rdev->scan_req = NULL;
6297 kfree(request);
6298 }
6299
6300 unlock:
6301 return err;
6302 }
6303
6304 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6305 {
6306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6307 struct wireless_dev *wdev = info->user_ptr[1];
6308
6309 if (!rdev->ops->abort_scan)
6310 return -EOPNOTSUPP;
6311
6312 if (rdev->scan_msg)
6313 return 0;
6314
6315 if (!rdev->scan_req)
6316 return -ENOENT;
6317
6318 rdev_abort_scan(rdev, wdev);
6319 return 0;
6320 }
6321
6322 static int
6323 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6324 struct cfg80211_sched_scan_request *request,
6325 struct nlattr **attrs)
6326 {
6327 int tmp, err, i = 0;
6328 struct nlattr *attr;
6329
6330 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6331 u32 interval;
6332
6333 /*
6334 * If scan plans are not specified,
6335 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6336 * case one scan plan will be set with the specified scan
6337 * interval and infinite number of iterations.
6338 */
6339 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6340 return -EINVAL;
6341
6342 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6343 if (!interval)
6344 return -EINVAL;
6345
6346 request->scan_plans[0].interval =
6347 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6348 if (!request->scan_plans[0].interval)
6349 return -EINVAL;
6350
6351 if (request->scan_plans[0].interval >
6352 wiphy->max_sched_scan_plan_interval)
6353 request->scan_plans[0].interval =
6354 wiphy->max_sched_scan_plan_interval;
6355
6356 return 0;
6357 }
6358
6359 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6360 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6361
6362 if (WARN_ON(i >= n_plans))
6363 return -EINVAL;
6364
6365 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6366 nla_data(attr), nla_len(attr),
6367 nl80211_plan_policy);
6368 if (err)
6369 return err;
6370
6371 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6372 return -EINVAL;
6373
6374 request->scan_plans[i].interval =
6375 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6376 if (!request->scan_plans[i].interval ||
6377 request->scan_plans[i].interval >
6378 wiphy->max_sched_scan_plan_interval)
6379 return -EINVAL;
6380
6381 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6382 request->scan_plans[i].iterations =
6383 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6384 if (!request->scan_plans[i].iterations ||
6385 (request->scan_plans[i].iterations >
6386 wiphy->max_sched_scan_plan_iterations))
6387 return -EINVAL;
6388 } else if (i < n_plans - 1) {
6389 /*
6390 * All scan plans but the last one must specify
6391 * a finite number of iterations
6392 */
6393 return -EINVAL;
6394 }
6395
6396 i++;
6397 }
6398
6399 /*
6400 * The last scan plan must not specify the number of
6401 * iterations, it is supposed to run infinitely
6402 */
6403 if (request->scan_plans[n_plans - 1].iterations)
6404 return -EINVAL;
6405
6406 return 0;
6407 }
6408
6409 static struct cfg80211_sched_scan_request *
6410 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6411 struct nlattr **attrs)
6412 {
6413 struct cfg80211_sched_scan_request *request;
6414 struct nlattr *attr;
6415 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6416 enum nl80211_band band;
6417 size_t ie_len;
6418 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6419 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6420
6421 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6422 return ERR_PTR(-EINVAL);
6423
6424 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6425 n_channels = validate_scan_freqs(
6426 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6427 if (!n_channels)
6428 return ERR_PTR(-EINVAL);
6429 } else {
6430 n_channels = ieee80211_get_num_supported_channels(wiphy);
6431 }
6432
6433 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6434 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6435 tmp)
6436 n_ssids++;
6437
6438 if (n_ssids > wiphy->max_sched_scan_ssids)
6439 return ERR_PTR(-EINVAL);
6440
6441 /*
6442 * First, count the number of 'real' matchsets. Due to an issue with
6443 * the old implementation, matchsets containing only the RSSI attribute
6444 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6445 * RSSI for all matchsets, rather than their own matchset for reporting
6446 * all APs with a strong RSSI. This is needed to be compatible with
6447 * older userspace that treated a matchset with only the RSSI as the
6448 * global RSSI for all other matchsets - if there are other matchsets.
6449 */
6450 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6451 nla_for_each_nested(attr,
6452 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6453 tmp) {
6454 struct nlattr *rssi;
6455
6456 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6457 nla_data(attr), nla_len(attr),
6458 nl80211_match_policy);
6459 if (err)
6460 return ERR_PTR(err);
6461 /* add other standalone attributes here */
6462 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6463 n_match_sets++;
6464 continue;
6465 }
6466 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6467 if (rssi)
6468 default_match_rssi = nla_get_s32(rssi);
6469 }
6470 }
6471
6472 /* However, if there's no other matchset, add the RSSI one */
6473 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6474 n_match_sets = 1;
6475
6476 if (n_match_sets > wiphy->max_match_sets)
6477 return ERR_PTR(-EINVAL);
6478
6479 if (attrs[NL80211_ATTR_IE])
6480 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6481 else
6482 ie_len = 0;
6483
6484 if (ie_len > wiphy->max_sched_scan_ie_len)
6485 return ERR_PTR(-EINVAL);
6486
6487 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6488 /*
6489 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6490 * each scan plan already specifies its own interval
6491 */
6492 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6493 return ERR_PTR(-EINVAL);
6494
6495 nla_for_each_nested(attr,
6496 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6497 n_plans++;
6498 } else {
6499 /*
6500 * The scan interval attribute is kept for backward
6501 * compatibility. If no scan plans are specified and sched scan
6502 * interval is specified, one scan plan will be set with this
6503 * scan interval and infinite number of iterations.
6504 */
6505 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6506 return ERR_PTR(-EINVAL);
6507
6508 n_plans = 1;
6509 }
6510
6511 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6512 return ERR_PTR(-EINVAL);
6513
6514 request = kzalloc(sizeof(*request)
6515 + sizeof(*request->ssids) * n_ssids
6516 + sizeof(*request->match_sets) * n_match_sets
6517 + sizeof(*request->scan_plans) * n_plans
6518 + sizeof(*request->channels) * n_channels
6519 + ie_len, GFP_KERNEL);
6520 if (!request)
6521 return ERR_PTR(-ENOMEM);
6522
6523 if (n_ssids)
6524 request->ssids = (void *)&request->channels[n_channels];
6525 request->n_ssids = n_ssids;
6526 if (ie_len) {
6527 if (n_ssids)
6528 request->ie = (void *)(request->ssids + n_ssids);
6529 else
6530 request->ie = (void *)(request->channels + n_channels);
6531 }
6532
6533 if (n_match_sets) {
6534 if (request->ie)
6535 request->match_sets = (void *)(request->ie + ie_len);
6536 else if (n_ssids)
6537 request->match_sets =
6538 (void *)(request->ssids + n_ssids);
6539 else
6540 request->match_sets =
6541 (void *)(request->channels + n_channels);
6542 }
6543 request->n_match_sets = n_match_sets;
6544
6545 if (n_match_sets)
6546 request->scan_plans = (void *)(request->match_sets +
6547 n_match_sets);
6548 else if (request->ie)
6549 request->scan_plans = (void *)(request->ie + ie_len);
6550 else if (n_ssids)
6551 request->scan_plans = (void *)(request->ssids + n_ssids);
6552 else
6553 request->scan_plans = (void *)(request->channels + n_channels);
6554
6555 request->n_scan_plans = n_plans;
6556
6557 i = 0;
6558 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6559 /* user specified, bail out if channel not found */
6560 nla_for_each_nested(attr,
6561 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6562 tmp) {
6563 struct ieee80211_channel *chan;
6564
6565 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6566
6567 if (!chan) {
6568 err = -EINVAL;
6569 goto out_free;
6570 }
6571
6572 /* ignore disabled channels */
6573 if (chan->flags & IEEE80211_CHAN_DISABLED)
6574 continue;
6575
6576 request->channels[i] = chan;
6577 i++;
6578 }
6579 } else {
6580 /* all channels */
6581 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6582 int j;
6583
6584 if (!wiphy->bands[band])
6585 continue;
6586 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6587 struct ieee80211_channel *chan;
6588
6589 chan = &wiphy->bands[band]->channels[j];
6590
6591 if (chan->flags & IEEE80211_CHAN_DISABLED)
6592 continue;
6593
6594 request->channels[i] = chan;
6595 i++;
6596 }
6597 }
6598 }
6599
6600 if (!i) {
6601 err = -EINVAL;
6602 goto out_free;
6603 }
6604
6605 request->n_channels = i;
6606
6607 i = 0;
6608 if (n_ssids) {
6609 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6610 tmp) {
6611 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6612 err = -EINVAL;
6613 goto out_free;
6614 }
6615 request->ssids[i].ssid_len = nla_len(attr);
6616 memcpy(request->ssids[i].ssid, nla_data(attr),
6617 nla_len(attr));
6618 i++;
6619 }
6620 }
6621
6622 i = 0;
6623 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6624 nla_for_each_nested(attr,
6625 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6626 tmp) {
6627 struct nlattr *ssid, *rssi;
6628
6629 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6630 nla_data(attr), nla_len(attr),
6631 nl80211_match_policy);
6632 if (err)
6633 goto out_free;
6634 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6635 if (ssid) {
6636 if (WARN_ON(i >= n_match_sets)) {
6637 /* this indicates a programming error,
6638 * the loop above should have verified
6639 * things properly
6640 */
6641 err = -EINVAL;
6642 goto out_free;
6643 }
6644
6645 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6646 err = -EINVAL;
6647 goto out_free;
6648 }
6649 memcpy(request->match_sets[i].ssid.ssid,
6650 nla_data(ssid), nla_len(ssid));
6651 request->match_sets[i].ssid.ssid_len =
6652 nla_len(ssid);
6653 /* special attribute - old implementation w/a */
6654 request->match_sets[i].rssi_thold =
6655 default_match_rssi;
6656 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6657 if (rssi)
6658 request->match_sets[i].rssi_thold =
6659 nla_get_s32(rssi);
6660 }
6661 i++;
6662 }
6663
6664 /* there was no other matchset, so the RSSI one is alone */
6665 if (i == 0 && n_match_sets)
6666 request->match_sets[0].rssi_thold = default_match_rssi;
6667
6668 request->min_rssi_thold = INT_MAX;
6669 for (i = 0; i < n_match_sets; i++)
6670 request->min_rssi_thold =
6671 min(request->match_sets[i].rssi_thold,
6672 request->min_rssi_thold);
6673 } else {
6674 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6675 }
6676
6677 if (ie_len) {
6678 request->ie_len = ie_len;
6679 memcpy((void *)request->ie,
6680 nla_data(attrs[NL80211_ATTR_IE]),
6681 request->ie_len);
6682 }
6683
6684 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6685 request->flags = nla_get_u32(
6686 attrs[NL80211_ATTR_SCAN_FLAGS]);
6687 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6688 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6689 err = -EOPNOTSUPP;
6690 goto out_free;
6691 }
6692
6693 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6694 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6695
6696 if (!wdev) /* must be net-detect */
6697 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6698
6699 if (!(wiphy->features & flg)) {
6700 err = -EOPNOTSUPP;
6701 goto out_free;
6702 }
6703
6704 if (wdev && wdev->current_bss) {
6705 err = -EOPNOTSUPP;
6706 goto out_free;
6707 }
6708
6709 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6710 request->mac_addr_mask);
6711 if (err)
6712 goto out_free;
6713 }
6714 }
6715
6716 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6717 request->delay =
6718 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6719
6720 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6721 if (err)
6722 goto out_free;
6723
6724 request->scan_start = jiffies;
6725
6726 return request;
6727
6728 out_free:
6729 kfree(request);
6730 return ERR_PTR(err);
6731 }
6732
6733 static int nl80211_start_sched_scan(struct sk_buff *skb,
6734 struct genl_info *info)
6735 {
6736 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6737 struct net_device *dev = info->user_ptr[1];
6738 struct wireless_dev *wdev = dev->ieee80211_ptr;
6739 struct cfg80211_sched_scan_request *sched_scan_req;
6740 int err;
6741
6742 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6743 !rdev->ops->sched_scan_start)
6744 return -EOPNOTSUPP;
6745
6746 if (rdev->sched_scan_req)
6747 return -EINPROGRESS;
6748
6749 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6750 info->attrs);
6751
6752 err = PTR_ERR_OR_ZERO(sched_scan_req);
6753 if (err)
6754 goto out_err;
6755
6756 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6757 if (err)
6758 goto out_free;
6759
6760 sched_scan_req->dev = dev;
6761 sched_scan_req->wiphy = &rdev->wiphy;
6762
6763 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6764 sched_scan_req->owner_nlportid = info->snd_portid;
6765
6766 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6767
6768 nl80211_send_sched_scan(rdev, dev,
6769 NL80211_CMD_START_SCHED_SCAN);
6770 return 0;
6771
6772 out_free:
6773 kfree(sched_scan_req);
6774 out_err:
6775 return err;
6776 }
6777
6778 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6779 struct genl_info *info)
6780 {
6781 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6782
6783 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6784 !rdev->ops->sched_scan_stop)
6785 return -EOPNOTSUPP;
6786
6787 return __cfg80211_stop_sched_scan(rdev, false);
6788 }
6789
6790 static int nl80211_start_radar_detection(struct sk_buff *skb,
6791 struct genl_info *info)
6792 {
6793 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6794 struct net_device *dev = info->user_ptr[1];
6795 struct wireless_dev *wdev = dev->ieee80211_ptr;
6796 struct cfg80211_chan_def chandef;
6797 enum nl80211_dfs_regions dfs_region;
6798 unsigned int cac_time_ms;
6799 int err;
6800
6801 dfs_region = reg_get_dfs_region(wdev->wiphy);
6802 if (dfs_region == NL80211_DFS_UNSET)
6803 return -EINVAL;
6804
6805 err = nl80211_parse_chandef(rdev, info, &chandef);
6806 if (err)
6807 return err;
6808
6809 if (netif_carrier_ok(dev))
6810 return -EBUSY;
6811
6812 if (wdev->cac_started)
6813 return -EBUSY;
6814
6815 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6816 wdev->iftype);
6817 if (err < 0)
6818 return err;
6819
6820 if (err == 0)
6821 return -EINVAL;
6822
6823 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6824 return -EINVAL;
6825
6826 if (!rdev->ops->start_radar_detection)
6827 return -EOPNOTSUPP;
6828
6829 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6830 if (WARN_ON(!cac_time_ms))
6831 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6832
6833 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
6834 if (!err) {
6835 wdev->chandef = chandef;
6836 wdev->cac_started = true;
6837 wdev->cac_start_time = jiffies;
6838 wdev->cac_time_ms = cac_time_ms;
6839 }
6840 return err;
6841 }
6842
6843 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6844 {
6845 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6846 struct net_device *dev = info->user_ptr[1];
6847 struct wireless_dev *wdev = dev->ieee80211_ptr;
6848 struct cfg80211_csa_settings params;
6849 /* csa_attrs is defined static to avoid waste of stack size - this
6850 * function is called under RTNL lock, so this should not be a problem.
6851 */
6852 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6853 int err;
6854 bool need_new_beacon = false;
6855 int len, i;
6856 u32 cs_count;
6857
6858 if (!rdev->ops->channel_switch ||
6859 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6860 return -EOPNOTSUPP;
6861
6862 switch (dev->ieee80211_ptr->iftype) {
6863 case NL80211_IFTYPE_AP:
6864 case NL80211_IFTYPE_P2P_GO:
6865 need_new_beacon = true;
6866
6867 /* useless if AP is not running */
6868 if (!wdev->beacon_interval)
6869 return -ENOTCONN;
6870 break;
6871 case NL80211_IFTYPE_ADHOC:
6872 if (!wdev->ssid_len)
6873 return -ENOTCONN;
6874 break;
6875 case NL80211_IFTYPE_MESH_POINT:
6876 if (!wdev->mesh_id_len)
6877 return -ENOTCONN;
6878 break;
6879 default:
6880 return -EOPNOTSUPP;
6881 }
6882
6883 memset(&params, 0, sizeof(params));
6884
6885 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6886 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6887 return -EINVAL;
6888
6889 /* only important for AP, IBSS and mesh create IEs internally */
6890 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6891 return -EINVAL;
6892
6893 /* Even though the attribute is u32, the specification says
6894 * u8, so let's make sure we don't overflow.
6895 */
6896 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6897 if (cs_count > 255)
6898 return -EINVAL;
6899
6900 params.count = cs_count;
6901
6902 if (!need_new_beacon)
6903 goto skip_beacons;
6904
6905 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6906 if (err)
6907 return err;
6908
6909 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6910 info->attrs[NL80211_ATTR_CSA_IES],
6911 nl80211_policy);
6912 if (err)
6913 return err;
6914
6915 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6916 if (err)
6917 return err;
6918
6919 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6920 return -EINVAL;
6921
6922 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6923 if (!len || (len % sizeof(u16)))
6924 return -EINVAL;
6925
6926 params.n_counter_offsets_beacon = len / sizeof(u16);
6927 if (rdev->wiphy.max_num_csa_counters &&
6928 (params.n_counter_offsets_beacon >
6929 rdev->wiphy.max_num_csa_counters))
6930 return -EINVAL;
6931
6932 params.counter_offsets_beacon =
6933 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6934
6935 /* sanity checks - counters should fit and be the same */
6936 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6937 u16 offset = params.counter_offsets_beacon[i];
6938
6939 if (offset >= params.beacon_csa.tail_len)
6940 return -EINVAL;
6941
6942 if (params.beacon_csa.tail[offset] != params.count)
6943 return -EINVAL;
6944 }
6945
6946 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6947 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6948 if (!len || (len % sizeof(u16)))
6949 return -EINVAL;
6950
6951 params.n_counter_offsets_presp = len / sizeof(u16);
6952 if (rdev->wiphy.max_num_csa_counters &&
6953 (params.n_counter_offsets_beacon >
6954 rdev->wiphy.max_num_csa_counters))
6955 return -EINVAL;
6956
6957 params.counter_offsets_presp =
6958 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6959
6960 /* sanity checks - counters should fit and be the same */
6961 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6962 u16 offset = params.counter_offsets_presp[i];
6963
6964 if (offset >= params.beacon_csa.probe_resp_len)
6965 return -EINVAL;
6966
6967 if (params.beacon_csa.probe_resp[offset] !=
6968 params.count)
6969 return -EINVAL;
6970 }
6971 }
6972
6973 skip_beacons:
6974 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6975 if (err)
6976 return err;
6977
6978 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6979 wdev->iftype))
6980 return -EINVAL;
6981
6982 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6983 &params.chandef,
6984 wdev->iftype);
6985 if (err < 0)
6986 return err;
6987
6988 if (err > 0)
6989 params.radar_required = true;
6990
6991 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6992 params.block_tx = true;
6993
6994 wdev_lock(wdev);
6995 err = rdev_channel_switch(rdev, dev, &params);
6996 wdev_unlock(wdev);
6997
6998 return err;
6999 }
7000
7001 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7002 u32 seq, int flags,
7003 struct cfg80211_registered_device *rdev,
7004 struct wireless_dev *wdev,
7005 struct cfg80211_internal_bss *intbss)
7006 {
7007 struct cfg80211_bss *res = &intbss->pub;
7008 const struct cfg80211_bss_ies *ies;
7009 void *hdr;
7010 struct nlattr *bss;
7011
7012 ASSERT_WDEV_LOCK(wdev);
7013
7014 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7015 NL80211_CMD_NEW_SCAN_RESULTS);
7016 if (!hdr)
7017 return -1;
7018
7019 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7020
7021 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7022 goto nla_put_failure;
7023 if (wdev->netdev &&
7024 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7025 goto nla_put_failure;
7026 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7027 NL80211_ATTR_PAD))
7028 goto nla_put_failure;
7029
7030 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7031 if (!bss)
7032 goto nla_put_failure;
7033 if ((!is_zero_ether_addr(res->bssid) &&
7034 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7035 goto nla_put_failure;
7036
7037 rcu_read_lock();
7038 /* indicate whether we have probe response data or not */
7039 if (rcu_access_pointer(res->proberesp_ies) &&
7040 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7041 goto fail_unlock_rcu;
7042
7043 /* this pointer prefers to be pointed to probe response data
7044 * but is always valid
7045 */
7046 ies = rcu_dereference(res->ies);
7047 if (ies) {
7048 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7049 NL80211_BSS_PAD))
7050 goto fail_unlock_rcu;
7051 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7052 ies->len, ies->data))
7053 goto fail_unlock_rcu;
7054 }
7055
7056 /* and this pointer is always (unless driver didn't know) beacon data */
7057 ies = rcu_dereference(res->beacon_ies);
7058 if (ies && ies->from_beacon) {
7059 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7060 NL80211_BSS_PAD))
7061 goto fail_unlock_rcu;
7062 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7063 ies->len, ies->data))
7064 goto fail_unlock_rcu;
7065 }
7066 rcu_read_unlock();
7067
7068 if (res->beacon_interval &&
7069 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7070 goto nla_put_failure;
7071 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7072 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7073 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7074 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7075 jiffies_to_msecs(jiffies - intbss->ts)))
7076 goto nla_put_failure;
7077
7078 if (intbss->parent_tsf &&
7079 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7080 intbss->parent_tsf, NL80211_BSS_PAD) ||
7081 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7082 intbss->parent_bssid)))
7083 goto nla_put_failure;
7084
7085 if (intbss->ts_boottime &&
7086 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7087 intbss->ts_boottime, NL80211_BSS_PAD))
7088 goto nla_put_failure;
7089
7090 switch (rdev->wiphy.signal_type) {
7091 case CFG80211_SIGNAL_TYPE_MBM:
7092 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7093 goto nla_put_failure;
7094 break;
7095 case CFG80211_SIGNAL_TYPE_UNSPEC:
7096 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7097 goto nla_put_failure;
7098 break;
7099 default:
7100 break;
7101 }
7102
7103 switch (wdev->iftype) {
7104 case NL80211_IFTYPE_P2P_CLIENT:
7105 case NL80211_IFTYPE_STATION:
7106 if (intbss == wdev->current_bss &&
7107 nla_put_u32(msg, NL80211_BSS_STATUS,
7108 NL80211_BSS_STATUS_ASSOCIATED))
7109 goto nla_put_failure;
7110 break;
7111 case NL80211_IFTYPE_ADHOC:
7112 if (intbss == wdev->current_bss &&
7113 nla_put_u32(msg, NL80211_BSS_STATUS,
7114 NL80211_BSS_STATUS_IBSS_JOINED))
7115 goto nla_put_failure;
7116 break;
7117 default:
7118 break;
7119 }
7120
7121 nla_nest_end(msg, bss);
7122
7123 genlmsg_end(msg, hdr);
7124 return 0;
7125
7126 fail_unlock_rcu:
7127 rcu_read_unlock();
7128 nla_put_failure:
7129 genlmsg_cancel(msg, hdr);
7130 return -EMSGSIZE;
7131 }
7132
7133 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7134 {
7135 struct cfg80211_registered_device *rdev;
7136 struct cfg80211_internal_bss *scan;
7137 struct wireless_dev *wdev;
7138 int start = cb->args[2], idx = 0;
7139 int err;
7140
7141 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7142 if (err)
7143 return err;
7144
7145 wdev_lock(wdev);
7146 spin_lock_bh(&rdev->bss_lock);
7147 cfg80211_bss_expire(rdev);
7148
7149 cb->seq = rdev->bss_generation;
7150
7151 list_for_each_entry(scan, &rdev->bss_list, list) {
7152 if (++idx <= start)
7153 continue;
7154 if (nl80211_send_bss(skb, cb,
7155 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7156 rdev, wdev, scan) < 0) {
7157 idx--;
7158 break;
7159 }
7160 }
7161
7162 spin_unlock_bh(&rdev->bss_lock);
7163 wdev_unlock(wdev);
7164
7165 cb->args[2] = idx;
7166 nl80211_finish_wdev_dump(rdev);
7167
7168 return skb->len;
7169 }
7170
7171 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7172 int flags, struct net_device *dev,
7173 bool allow_radio_stats,
7174 struct survey_info *survey)
7175 {
7176 void *hdr;
7177 struct nlattr *infoattr;
7178
7179 /* skip radio stats if userspace didn't request them */
7180 if (!survey->channel && !allow_radio_stats)
7181 return 0;
7182
7183 hdr = nl80211hdr_put(msg, portid, seq, flags,
7184 NL80211_CMD_NEW_SURVEY_RESULTS);
7185 if (!hdr)
7186 return -ENOMEM;
7187
7188 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7189 goto nla_put_failure;
7190
7191 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7192 if (!infoattr)
7193 goto nla_put_failure;
7194
7195 if (survey->channel &&
7196 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7197 survey->channel->center_freq))
7198 goto nla_put_failure;
7199
7200 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7201 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7202 goto nla_put_failure;
7203 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7204 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7205 goto nla_put_failure;
7206 if ((survey->filled & SURVEY_INFO_TIME) &&
7207 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7208 survey->time, NL80211_SURVEY_INFO_PAD))
7209 goto nla_put_failure;
7210 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7211 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7212 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7213 goto nla_put_failure;
7214 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7215 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7216 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7217 goto nla_put_failure;
7218 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7219 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7220 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7221 goto nla_put_failure;
7222 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7223 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7224 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7225 goto nla_put_failure;
7226 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7227 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7228 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7229 goto nla_put_failure;
7230
7231 nla_nest_end(msg, infoattr);
7232
7233 genlmsg_end(msg, hdr);
7234 return 0;
7235
7236 nla_put_failure:
7237 genlmsg_cancel(msg, hdr);
7238 return -EMSGSIZE;
7239 }
7240
7241 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7242 {
7243 struct survey_info survey;
7244 struct cfg80211_registered_device *rdev;
7245 struct wireless_dev *wdev;
7246 int survey_idx = cb->args[2];
7247 int res;
7248 bool radio_stats;
7249
7250 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7251 if (res)
7252 return res;
7253
7254 /* prepare_wdev_dump parsed the attributes */
7255 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7256
7257 if (!wdev->netdev) {
7258 res = -EINVAL;
7259 goto out_err;
7260 }
7261
7262 if (!rdev->ops->dump_survey) {
7263 res = -EOPNOTSUPP;
7264 goto out_err;
7265 }
7266
7267 while (1) {
7268 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7269 if (res == -ENOENT)
7270 break;
7271 if (res)
7272 goto out_err;
7273
7274 /* don't send disabled channels, but do send non-channel data */
7275 if (survey.channel &&
7276 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7277 survey_idx++;
7278 continue;
7279 }
7280
7281 if (nl80211_send_survey(skb,
7282 NETLINK_CB(cb->skb).portid,
7283 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7284 wdev->netdev, radio_stats, &survey) < 0)
7285 goto out;
7286 survey_idx++;
7287 }
7288
7289 out:
7290 cb->args[2] = survey_idx;
7291 res = skb->len;
7292 out_err:
7293 nl80211_finish_wdev_dump(rdev);
7294 return res;
7295 }
7296
7297 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7298 {
7299 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7300 NL80211_WPA_VERSION_2));
7301 }
7302
7303 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7304 {
7305 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7306 struct net_device *dev = info->user_ptr[1];
7307 struct ieee80211_channel *chan;
7308 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
7309 int err, ssid_len, ie_len = 0, sae_data_len = 0;
7310 enum nl80211_auth_type auth_type;
7311 struct key_parse key;
7312 bool local_state_change;
7313
7314 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7315 return -EINVAL;
7316
7317 if (!info->attrs[NL80211_ATTR_MAC])
7318 return -EINVAL;
7319
7320 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7321 return -EINVAL;
7322
7323 if (!info->attrs[NL80211_ATTR_SSID])
7324 return -EINVAL;
7325
7326 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7327 return -EINVAL;
7328
7329 err = nl80211_parse_key(info, &key);
7330 if (err)
7331 return err;
7332
7333 if (key.idx >= 0) {
7334 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7335 return -EINVAL;
7336 if (!key.p.key || !key.p.key_len)
7337 return -EINVAL;
7338 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7339 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7340 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7341 key.p.key_len != WLAN_KEY_LEN_WEP104))
7342 return -EINVAL;
7343 if (key.idx > 4)
7344 return -EINVAL;
7345 } else {
7346 key.p.key_len = 0;
7347 key.p.key = NULL;
7348 }
7349
7350 if (key.idx >= 0) {
7351 int i;
7352 bool ok = false;
7353
7354 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7355 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7356 ok = true;
7357 break;
7358 }
7359 }
7360 if (!ok)
7361 return -EINVAL;
7362 }
7363
7364 if (!rdev->ops->auth)
7365 return -EOPNOTSUPP;
7366
7367 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7368 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7369 return -EOPNOTSUPP;
7370
7371 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7372 chan = nl80211_get_valid_chan(&rdev->wiphy,
7373 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7374 if (!chan)
7375 return -EINVAL;
7376
7377 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7378 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7379
7380 if (info->attrs[NL80211_ATTR_IE]) {
7381 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7382 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7383 }
7384
7385 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7386 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7387 return -EINVAL;
7388
7389 if (auth_type == NL80211_AUTHTYPE_SAE &&
7390 !info->attrs[NL80211_ATTR_SAE_DATA])
7391 return -EINVAL;
7392
7393 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7394 if (auth_type != NL80211_AUTHTYPE_SAE)
7395 return -EINVAL;
7396 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7397 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7398 /* need to include at least Auth Transaction and Status Code */
7399 if (sae_data_len < 4)
7400 return -EINVAL;
7401 }
7402
7403 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7404
7405 /*
7406 * Since we no longer track auth state, ignore
7407 * requests to only change local state.
7408 */
7409 if (local_state_change)
7410 return 0;
7411
7412 wdev_lock(dev->ieee80211_ptr);
7413 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7414 ssid, ssid_len, ie, ie_len,
7415 key.p.key, key.p.key_len, key.idx,
7416 sae_data, sae_data_len);
7417 wdev_unlock(dev->ieee80211_ptr);
7418 return err;
7419 }
7420
7421 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7422 struct genl_info *info,
7423 struct cfg80211_crypto_settings *settings,
7424 int cipher_limit)
7425 {
7426 memset(settings, 0, sizeof(*settings));
7427
7428 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7429
7430 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7431 u16 proto;
7432
7433 proto = nla_get_u16(
7434 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7435 settings->control_port_ethertype = cpu_to_be16(proto);
7436 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7437 proto != ETH_P_PAE)
7438 return -EINVAL;
7439 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7440 settings->control_port_no_encrypt = true;
7441 } else
7442 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7443
7444 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7445 void *data;
7446 int len, i;
7447
7448 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7449 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7450 settings->n_ciphers_pairwise = len / sizeof(u32);
7451
7452 if (len % sizeof(u32))
7453 return -EINVAL;
7454
7455 if (settings->n_ciphers_pairwise > cipher_limit)
7456 return -EINVAL;
7457
7458 memcpy(settings->ciphers_pairwise, data, len);
7459
7460 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7461 if (!cfg80211_supported_cipher_suite(
7462 &rdev->wiphy,
7463 settings->ciphers_pairwise[i]))
7464 return -EINVAL;
7465 }
7466
7467 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7468 settings->cipher_group =
7469 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7470 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7471 settings->cipher_group))
7472 return -EINVAL;
7473 }
7474
7475 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7476 settings->wpa_versions =
7477 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7478 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7479 return -EINVAL;
7480 }
7481
7482 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7483 void *data;
7484 int len;
7485
7486 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7487 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7488 settings->n_akm_suites = len / sizeof(u32);
7489
7490 if (len % sizeof(u32))
7491 return -EINVAL;
7492
7493 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7494 return -EINVAL;
7495
7496 memcpy(settings->akm_suites, data, len);
7497 }
7498
7499 return 0;
7500 }
7501
7502 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7503 {
7504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7505 struct net_device *dev = info->user_ptr[1];
7506 struct ieee80211_channel *chan;
7507 struct cfg80211_assoc_request req = {};
7508 const u8 *bssid, *ssid;
7509 int err, ssid_len = 0;
7510
7511 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7512 return -EINVAL;
7513
7514 if (!info->attrs[NL80211_ATTR_MAC] ||
7515 !info->attrs[NL80211_ATTR_SSID] ||
7516 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7517 return -EINVAL;
7518
7519 if (!rdev->ops->assoc)
7520 return -EOPNOTSUPP;
7521
7522 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7523 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7524 return -EOPNOTSUPP;
7525
7526 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7527
7528 chan = nl80211_get_valid_chan(&rdev->wiphy,
7529 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7530 if (!chan)
7531 return -EINVAL;
7532
7533 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7534 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7535
7536 if (info->attrs[NL80211_ATTR_IE]) {
7537 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7538 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7539 }
7540
7541 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7542 enum nl80211_mfp mfp =
7543 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7544 if (mfp == NL80211_MFP_REQUIRED)
7545 req.use_mfp = true;
7546 else if (mfp != NL80211_MFP_NO)
7547 return -EINVAL;
7548 }
7549
7550 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7551 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7552
7553 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7554 req.flags |= ASSOC_REQ_DISABLE_HT;
7555
7556 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7557 memcpy(&req.ht_capa_mask,
7558 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7559 sizeof(req.ht_capa_mask));
7560
7561 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7562 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7563 return -EINVAL;
7564 memcpy(&req.ht_capa,
7565 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7566 sizeof(req.ht_capa));
7567 }
7568
7569 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7570 req.flags |= ASSOC_REQ_DISABLE_VHT;
7571
7572 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7573 memcpy(&req.vht_capa_mask,
7574 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7575 sizeof(req.vht_capa_mask));
7576
7577 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7578 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7579 return -EINVAL;
7580 memcpy(&req.vht_capa,
7581 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7582 sizeof(req.vht_capa));
7583 }
7584
7585 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7586 if (!((rdev->wiphy.features &
7587 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
7588 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
7589 !wiphy_ext_feature_isset(&rdev->wiphy,
7590 NL80211_EXT_FEATURE_RRM))
7591 return -EINVAL;
7592 req.flags |= ASSOC_REQ_USE_RRM;
7593 }
7594
7595 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7596 if (!err) {
7597 wdev_lock(dev->ieee80211_ptr);
7598 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7599 ssid, ssid_len, &req);
7600 wdev_unlock(dev->ieee80211_ptr);
7601 }
7602
7603 return err;
7604 }
7605
7606 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7607 {
7608 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7609 struct net_device *dev = info->user_ptr[1];
7610 const u8 *ie = NULL, *bssid;
7611 int ie_len = 0, err;
7612 u16 reason_code;
7613 bool local_state_change;
7614
7615 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7616 return -EINVAL;
7617
7618 if (!info->attrs[NL80211_ATTR_MAC])
7619 return -EINVAL;
7620
7621 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7622 return -EINVAL;
7623
7624 if (!rdev->ops->deauth)
7625 return -EOPNOTSUPP;
7626
7627 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7628 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7629 return -EOPNOTSUPP;
7630
7631 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7632
7633 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7634 if (reason_code == 0) {
7635 /* Reason Code 0 is reserved */
7636 return -EINVAL;
7637 }
7638
7639 if (info->attrs[NL80211_ATTR_IE]) {
7640 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7641 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7642 }
7643
7644 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7645
7646 wdev_lock(dev->ieee80211_ptr);
7647 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7648 local_state_change);
7649 wdev_unlock(dev->ieee80211_ptr);
7650 return err;
7651 }
7652
7653 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7654 {
7655 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7656 struct net_device *dev = info->user_ptr[1];
7657 const u8 *ie = NULL, *bssid;
7658 int ie_len = 0, err;
7659 u16 reason_code;
7660 bool local_state_change;
7661
7662 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7663 return -EINVAL;
7664
7665 if (!info->attrs[NL80211_ATTR_MAC])
7666 return -EINVAL;
7667
7668 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7669 return -EINVAL;
7670
7671 if (!rdev->ops->disassoc)
7672 return -EOPNOTSUPP;
7673
7674 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7675 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7676 return -EOPNOTSUPP;
7677
7678 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7679
7680 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7681 if (reason_code == 0) {
7682 /* Reason Code 0 is reserved */
7683 return -EINVAL;
7684 }
7685
7686 if (info->attrs[NL80211_ATTR_IE]) {
7687 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7688 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7689 }
7690
7691 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7692
7693 wdev_lock(dev->ieee80211_ptr);
7694 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7695 local_state_change);
7696 wdev_unlock(dev->ieee80211_ptr);
7697 return err;
7698 }
7699
7700 static bool
7701 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7702 int mcast_rate[NUM_NL80211_BANDS],
7703 int rateval)
7704 {
7705 struct wiphy *wiphy = &rdev->wiphy;
7706 bool found = false;
7707 int band, i;
7708
7709 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7710 struct ieee80211_supported_band *sband;
7711
7712 sband = wiphy->bands[band];
7713 if (!sband)
7714 continue;
7715
7716 for (i = 0; i < sband->n_bitrates; i++) {
7717 if (sband->bitrates[i].bitrate == rateval) {
7718 mcast_rate[band] = i + 1;
7719 found = true;
7720 break;
7721 }
7722 }
7723 }
7724
7725 return found;
7726 }
7727
7728 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7729 {
7730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7731 struct net_device *dev = info->user_ptr[1];
7732 struct cfg80211_ibss_params ibss;
7733 struct wiphy *wiphy;
7734 struct cfg80211_cached_keys *connkeys = NULL;
7735 int err;
7736
7737 memset(&ibss, 0, sizeof(ibss));
7738
7739 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7740 return -EINVAL;
7741
7742 if (!info->attrs[NL80211_ATTR_SSID] ||
7743 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7744 return -EINVAL;
7745
7746 ibss.beacon_interval = 100;
7747
7748 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7749 ibss.beacon_interval =
7750 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7751 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7752 return -EINVAL;
7753 }
7754
7755 if (!rdev->ops->join_ibss)
7756 return -EOPNOTSUPP;
7757
7758 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7759 return -EOPNOTSUPP;
7760
7761 wiphy = &rdev->wiphy;
7762
7763 if (info->attrs[NL80211_ATTR_MAC]) {
7764 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7765
7766 if (!is_valid_ether_addr(ibss.bssid))
7767 return -EINVAL;
7768 }
7769 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7770 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7771
7772 if (info->attrs[NL80211_ATTR_IE]) {
7773 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7774 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7775 }
7776
7777 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7778 if (err)
7779 return err;
7780
7781 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7782 NL80211_IFTYPE_ADHOC))
7783 return -EINVAL;
7784
7785 switch (ibss.chandef.width) {
7786 case NL80211_CHAN_WIDTH_5:
7787 case NL80211_CHAN_WIDTH_10:
7788 case NL80211_CHAN_WIDTH_20_NOHT:
7789 break;
7790 case NL80211_CHAN_WIDTH_20:
7791 case NL80211_CHAN_WIDTH_40:
7792 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7793 return -EINVAL;
7794 break;
7795 case NL80211_CHAN_WIDTH_80:
7796 case NL80211_CHAN_WIDTH_80P80:
7797 case NL80211_CHAN_WIDTH_160:
7798 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7799 return -EINVAL;
7800 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7801 NL80211_EXT_FEATURE_VHT_IBSS))
7802 return -EINVAL;
7803 break;
7804 default:
7805 return -EINVAL;
7806 }
7807
7808 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7809 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7810
7811 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7812 u8 *rates =
7813 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7814 int n_rates =
7815 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7816 struct ieee80211_supported_band *sband =
7817 wiphy->bands[ibss.chandef.chan->band];
7818
7819 err = ieee80211_get_ratemask(sband, rates, n_rates,
7820 &ibss.basic_rates);
7821 if (err)
7822 return err;
7823 }
7824
7825 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7826 memcpy(&ibss.ht_capa_mask,
7827 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7828 sizeof(ibss.ht_capa_mask));
7829
7830 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7831 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7832 return -EINVAL;
7833 memcpy(&ibss.ht_capa,
7834 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7835 sizeof(ibss.ht_capa));
7836 }
7837
7838 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7839 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7840 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7841 return -EINVAL;
7842
7843 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7844 bool no_ht = false;
7845
7846 connkeys = nl80211_parse_connkeys(rdev,
7847 info->attrs[NL80211_ATTR_KEYS],
7848 &no_ht);
7849 if (IS_ERR(connkeys))
7850 return PTR_ERR(connkeys);
7851
7852 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7853 no_ht) {
7854 kzfree(connkeys);
7855 return -EINVAL;
7856 }
7857 }
7858
7859 ibss.control_port =
7860 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7861
7862 ibss.userspace_handles_dfs =
7863 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7864
7865 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7866 if (err)
7867 kzfree(connkeys);
7868 return err;
7869 }
7870
7871 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7872 {
7873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7874 struct net_device *dev = info->user_ptr[1];
7875
7876 if (!rdev->ops->leave_ibss)
7877 return -EOPNOTSUPP;
7878
7879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7880 return -EOPNOTSUPP;
7881
7882 return cfg80211_leave_ibss(rdev, dev, false);
7883 }
7884
7885 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7886 {
7887 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7888 struct net_device *dev = info->user_ptr[1];
7889 int mcast_rate[NUM_NL80211_BANDS];
7890 u32 nla_rate;
7891 int err;
7892
7893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7894 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7895 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7896 return -EOPNOTSUPP;
7897
7898 if (!rdev->ops->set_mcast_rate)
7899 return -EOPNOTSUPP;
7900
7901 memset(mcast_rate, 0, sizeof(mcast_rate));
7902
7903 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7904 return -EINVAL;
7905
7906 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7907 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7908 return -EINVAL;
7909
7910 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
7911
7912 return err;
7913 }
7914
7915 static struct sk_buff *
7916 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7917 struct wireless_dev *wdev, int approxlen,
7918 u32 portid, u32 seq, enum nl80211_commands cmd,
7919 enum nl80211_attrs attr,
7920 const struct nl80211_vendor_cmd_info *info,
7921 gfp_t gfp)
7922 {
7923 struct sk_buff *skb;
7924 void *hdr;
7925 struct nlattr *data;
7926
7927 skb = nlmsg_new(approxlen + 100, gfp);
7928 if (!skb)
7929 return NULL;
7930
7931 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7932 if (!hdr) {
7933 kfree_skb(skb);
7934 return NULL;
7935 }
7936
7937 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7938 goto nla_put_failure;
7939
7940 if (info) {
7941 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7942 info->vendor_id))
7943 goto nla_put_failure;
7944 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7945 info->subcmd))
7946 goto nla_put_failure;
7947 }
7948
7949 if (wdev) {
7950 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
7951 wdev_id(wdev), NL80211_ATTR_PAD))
7952 goto nla_put_failure;
7953 if (wdev->netdev &&
7954 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7955 wdev->netdev->ifindex))
7956 goto nla_put_failure;
7957 }
7958
7959 data = nla_nest_start(skb, attr);
7960
7961 ((void **)skb->cb)[0] = rdev;
7962 ((void **)skb->cb)[1] = hdr;
7963 ((void **)skb->cb)[2] = data;
7964
7965 return skb;
7966
7967 nla_put_failure:
7968 kfree_skb(skb);
7969 return NULL;
7970 }
7971
7972 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7973 struct wireless_dev *wdev,
7974 enum nl80211_commands cmd,
7975 enum nl80211_attrs attr,
7976 int vendor_event_idx,
7977 int approxlen, gfp_t gfp)
7978 {
7979 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7980 const struct nl80211_vendor_cmd_info *info;
7981
7982 switch (cmd) {
7983 case NL80211_CMD_TESTMODE:
7984 if (WARN_ON(vendor_event_idx != -1))
7985 return NULL;
7986 info = NULL;
7987 break;
7988 case NL80211_CMD_VENDOR:
7989 if (WARN_ON(vendor_event_idx < 0 ||
7990 vendor_event_idx >= wiphy->n_vendor_events))
7991 return NULL;
7992 info = &wiphy->vendor_events[vendor_event_idx];
7993 break;
7994 default:
7995 WARN_ON(1);
7996 return NULL;
7997 }
7998
7999 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8000 cmd, attr, info, gfp);
8001 }
8002 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8003
8004 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8005 {
8006 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8007 void *hdr = ((void **)skb->cb)[1];
8008 struct nlattr *data = ((void **)skb->cb)[2];
8009 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8010
8011 /* clear CB data for netlink core to own from now on */
8012 memset(skb->cb, 0, sizeof(skb->cb));
8013
8014 nla_nest_end(skb, data);
8015 genlmsg_end(skb, hdr);
8016
8017 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8018 mcgrp = NL80211_MCGRP_VENDOR;
8019
8020 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8021 mcgrp, gfp);
8022 }
8023 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8024
8025 #ifdef CONFIG_NL80211_TESTMODE
8026 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8027 {
8028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8029 struct wireless_dev *wdev =
8030 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8031 int err;
8032
8033 if (!rdev->ops->testmode_cmd)
8034 return -EOPNOTSUPP;
8035
8036 if (IS_ERR(wdev)) {
8037 err = PTR_ERR(wdev);
8038 if (err != -EINVAL)
8039 return err;
8040 wdev = NULL;
8041 } else if (wdev->wiphy != &rdev->wiphy) {
8042 return -EINVAL;
8043 }
8044
8045 if (!info->attrs[NL80211_ATTR_TESTDATA])
8046 return -EINVAL;
8047
8048 rdev->cur_cmd_info = info;
8049 err = rdev_testmode_cmd(rdev, wdev,
8050 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8051 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8052 rdev->cur_cmd_info = NULL;
8053
8054 return err;
8055 }
8056
8057 static int nl80211_testmode_dump(struct sk_buff *skb,
8058 struct netlink_callback *cb)
8059 {
8060 struct cfg80211_registered_device *rdev;
8061 int err;
8062 long phy_idx;
8063 void *data = NULL;
8064 int data_len = 0;
8065
8066 rtnl_lock();
8067
8068 if (cb->args[0]) {
8069 /*
8070 * 0 is a valid index, but not valid for args[0],
8071 * so we need to offset by 1.
8072 */
8073 phy_idx = cb->args[0] - 1;
8074 } else {
8075 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8076 nl80211_fam.attrbuf, nl80211_fam.maxattr,
8077 nl80211_policy);
8078 if (err)
8079 goto out_err;
8080
8081 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
8082 nl80211_fam.attrbuf);
8083 if (IS_ERR(rdev)) {
8084 err = PTR_ERR(rdev);
8085 goto out_err;
8086 }
8087 phy_idx = rdev->wiphy_idx;
8088 rdev = NULL;
8089
8090 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
8091 cb->args[1] =
8092 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
8093 }
8094
8095 if (cb->args[1]) {
8096 data = nla_data((void *)cb->args[1]);
8097 data_len = nla_len((void *)cb->args[1]);
8098 }
8099
8100 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8101 if (!rdev) {
8102 err = -ENOENT;
8103 goto out_err;
8104 }
8105
8106 if (!rdev->ops->testmode_dump) {
8107 err = -EOPNOTSUPP;
8108 goto out_err;
8109 }
8110
8111 while (1) {
8112 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8113 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8114 NL80211_CMD_TESTMODE);
8115 struct nlattr *tmdata;
8116
8117 if (!hdr)
8118 break;
8119
8120 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8121 genlmsg_cancel(skb, hdr);
8122 break;
8123 }
8124
8125 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8126 if (!tmdata) {
8127 genlmsg_cancel(skb, hdr);
8128 break;
8129 }
8130 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8131 nla_nest_end(skb, tmdata);
8132
8133 if (err == -ENOBUFS || err == -ENOENT) {
8134 genlmsg_cancel(skb, hdr);
8135 break;
8136 } else if (err) {
8137 genlmsg_cancel(skb, hdr);
8138 goto out_err;
8139 }
8140
8141 genlmsg_end(skb, hdr);
8142 }
8143
8144 err = skb->len;
8145 /* see above */
8146 cb->args[0] = phy_idx + 1;
8147 out_err:
8148 rtnl_unlock();
8149 return err;
8150 }
8151 #endif
8152
8153 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8154 {
8155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8156 struct net_device *dev = info->user_ptr[1];
8157 struct cfg80211_connect_params connect;
8158 struct wiphy *wiphy;
8159 struct cfg80211_cached_keys *connkeys = NULL;
8160 int err;
8161
8162 memset(&connect, 0, sizeof(connect));
8163
8164 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8165 return -EINVAL;
8166
8167 if (!info->attrs[NL80211_ATTR_SSID] ||
8168 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8169 return -EINVAL;
8170
8171 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8172 connect.auth_type =
8173 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8174 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8175 NL80211_CMD_CONNECT))
8176 return -EINVAL;
8177 } else
8178 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8179
8180 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8181
8182 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8183 NL80211_MAX_NR_CIPHER_SUITES);
8184 if (err)
8185 return err;
8186
8187 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8188 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8189 return -EOPNOTSUPP;
8190
8191 wiphy = &rdev->wiphy;
8192
8193 connect.bg_scan_period = -1;
8194 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8195 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8196 connect.bg_scan_period =
8197 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8198 }
8199
8200 if (info->attrs[NL80211_ATTR_MAC])
8201 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8202 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8203 connect.bssid_hint =
8204 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8205 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8206 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8207
8208 if (info->attrs[NL80211_ATTR_IE]) {
8209 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8210 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8211 }
8212
8213 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8214 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8215 if (connect.mfp != NL80211_MFP_REQUIRED &&
8216 connect.mfp != NL80211_MFP_NO)
8217 return -EINVAL;
8218 } else {
8219 connect.mfp = NL80211_MFP_NO;
8220 }
8221
8222 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8223 connect.prev_bssid =
8224 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8225
8226 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8227 connect.channel = nl80211_get_valid_chan(
8228 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8229 if (!connect.channel)
8230 return -EINVAL;
8231 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8232 connect.channel_hint = nl80211_get_valid_chan(
8233 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8234 if (!connect.channel_hint)
8235 return -EINVAL;
8236 }
8237
8238 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8239 connkeys = nl80211_parse_connkeys(rdev,
8240 info->attrs[NL80211_ATTR_KEYS], NULL);
8241 if (IS_ERR(connkeys))
8242 return PTR_ERR(connkeys);
8243 }
8244
8245 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8246 connect.flags |= ASSOC_REQ_DISABLE_HT;
8247
8248 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8249 memcpy(&connect.ht_capa_mask,
8250 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8251 sizeof(connect.ht_capa_mask));
8252
8253 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8254 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8255 kzfree(connkeys);
8256 return -EINVAL;
8257 }
8258 memcpy(&connect.ht_capa,
8259 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8260 sizeof(connect.ht_capa));
8261 }
8262
8263 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8264 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8265
8266 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8267 memcpy(&connect.vht_capa_mask,
8268 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8269 sizeof(connect.vht_capa_mask));
8270
8271 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8272 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8273 kzfree(connkeys);
8274 return -EINVAL;
8275 }
8276 memcpy(&connect.vht_capa,
8277 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8278 sizeof(connect.vht_capa));
8279 }
8280
8281 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8282 if (!((rdev->wiphy.features &
8283 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8284 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8285 !wiphy_ext_feature_isset(&rdev->wiphy,
8286 NL80211_EXT_FEATURE_RRM)) {
8287 kzfree(connkeys);
8288 return -EINVAL;
8289 }
8290 connect.flags |= ASSOC_REQ_USE_RRM;
8291 }
8292
8293 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8294 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8295 kzfree(connkeys);
8296 return -EOPNOTSUPP;
8297 }
8298
8299 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8300 /* bss selection makes no sense if bssid is set */
8301 if (connect.bssid) {
8302 kzfree(connkeys);
8303 return -EINVAL;
8304 }
8305
8306 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8307 wiphy, &connect.bss_select);
8308 if (err) {
8309 kzfree(connkeys);
8310 return err;
8311 }
8312 }
8313
8314 wdev_lock(dev->ieee80211_ptr);
8315 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8316 connect.prev_bssid);
8317 wdev_unlock(dev->ieee80211_ptr);
8318 if (err)
8319 kzfree(connkeys);
8320 return err;
8321 }
8322
8323 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8324 {
8325 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8326 struct net_device *dev = info->user_ptr[1];
8327 u16 reason;
8328 int ret;
8329
8330 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8331 reason = WLAN_REASON_DEAUTH_LEAVING;
8332 else
8333 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8334
8335 if (reason == 0)
8336 return -EINVAL;
8337
8338 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8339 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8340 return -EOPNOTSUPP;
8341
8342 wdev_lock(dev->ieee80211_ptr);
8343 ret = cfg80211_disconnect(rdev, dev, reason, true);
8344 wdev_unlock(dev->ieee80211_ptr);
8345 return ret;
8346 }
8347
8348 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8349 {
8350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8351 struct net *net;
8352 int err;
8353
8354 if (info->attrs[NL80211_ATTR_PID]) {
8355 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8356
8357 net = get_net_ns_by_pid(pid);
8358 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8359 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8360
8361 net = get_net_ns_by_fd(fd);
8362 } else {
8363 return -EINVAL;
8364 }
8365
8366 if (IS_ERR(net))
8367 return PTR_ERR(net);
8368
8369 err = 0;
8370
8371 /* check if anything to do */
8372 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8373 err = cfg80211_switch_netns(rdev, net);
8374
8375 put_net(net);
8376 return err;
8377 }
8378
8379 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8380 {
8381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8382 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8383 struct cfg80211_pmksa *pmksa) = NULL;
8384 struct net_device *dev = info->user_ptr[1];
8385 struct cfg80211_pmksa pmksa;
8386
8387 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8388
8389 if (!info->attrs[NL80211_ATTR_MAC])
8390 return -EINVAL;
8391
8392 if (!info->attrs[NL80211_ATTR_PMKID])
8393 return -EINVAL;
8394
8395 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8396 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8397
8398 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8399 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8400 return -EOPNOTSUPP;
8401
8402 switch (info->genlhdr->cmd) {
8403 case NL80211_CMD_SET_PMKSA:
8404 rdev_ops = rdev->ops->set_pmksa;
8405 break;
8406 case NL80211_CMD_DEL_PMKSA:
8407 rdev_ops = rdev->ops->del_pmksa;
8408 break;
8409 default:
8410 WARN_ON(1);
8411 break;
8412 }
8413
8414 if (!rdev_ops)
8415 return -EOPNOTSUPP;
8416
8417 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8418 }
8419
8420 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8421 {
8422 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8423 struct net_device *dev = info->user_ptr[1];
8424
8425 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8426 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8427 return -EOPNOTSUPP;
8428
8429 if (!rdev->ops->flush_pmksa)
8430 return -EOPNOTSUPP;
8431
8432 return rdev_flush_pmksa(rdev, dev);
8433 }
8434
8435 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8436 {
8437 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8438 struct net_device *dev = info->user_ptr[1];
8439 u8 action_code, dialog_token;
8440 u32 peer_capability = 0;
8441 u16 status_code;
8442 u8 *peer;
8443 bool initiator;
8444
8445 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8446 !rdev->ops->tdls_mgmt)
8447 return -EOPNOTSUPP;
8448
8449 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8450 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8451 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8452 !info->attrs[NL80211_ATTR_IE] ||
8453 !info->attrs[NL80211_ATTR_MAC])
8454 return -EINVAL;
8455
8456 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8457 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8458 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8459 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8460 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8461 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8462 peer_capability =
8463 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8464
8465 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8466 dialog_token, status_code, peer_capability,
8467 initiator,
8468 nla_data(info->attrs[NL80211_ATTR_IE]),
8469 nla_len(info->attrs[NL80211_ATTR_IE]));
8470 }
8471
8472 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8473 {
8474 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8475 struct net_device *dev = info->user_ptr[1];
8476 enum nl80211_tdls_operation operation;
8477 u8 *peer;
8478
8479 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8480 !rdev->ops->tdls_oper)
8481 return -EOPNOTSUPP;
8482
8483 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8484 !info->attrs[NL80211_ATTR_MAC])
8485 return -EINVAL;
8486
8487 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8488 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8489
8490 return rdev_tdls_oper(rdev, dev, peer, operation);
8491 }
8492
8493 static int nl80211_remain_on_channel(struct sk_buff *skb,
8494 struct genl_info *info)
8495 {
8496 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8497 struct wireless_dev *wdev = info->user_ptr[1];
8498 struct cfg80211_chan_def chandef;
8499 struct sk_buff *msg;
8500 void *hdr;
8501 u64 cookie;
8502 u32 duration;
8503 int err;
8504
8505 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8506 !info->attrs[NL80211_ATTR_DURATION])
8507 return -EINVAL;
8508
8509 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8510
8511 if (!rdev->ops->remain_on_channel ||
8512 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8513 return -EOPNOTSUPP;
8514
8515 /*
8516 * We should be on that channel for at least a minimum amount of
8517 * time (10ms) but no longer than the driver supports.
8518 */
8519 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8520 duration > rdev->wiphy.max_remain_on_channel_duration)
8521 return -EINVAL;
8522
8523 err = nl80211_parse_chandef(rdev, info, &chandef);
8524 if (err)
8525 return err;
8526
8527 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8528 if (!msg)
8529 return -ENOMEM;
8530
8531 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8532 NL80211_CMD_REMAIN_ON_CHANNEL);
8533 if (!hdr) {
8534 err = -ENOBUFS;
8535 goto free_msg;
8536 }
8537
8538 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8539 duration, &cookie);
8540
8541 if (err)
8542 goto free_msg;
8543
8544 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
8545 NL80211_ATTR_PAD))
8546 goto nla_put_failure;
8547
8548 genlmsg_end(msg, hdr);
8549
8550 return genlmsg_reply(msg, info);
8551
8552 nla_put_failure:
8553 err = -ENOBUFS;
8554 free_msg:
8555 nlmsg_free(msg);
8556 return err;
8557 }
8558
8559 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8560 struct genl_info *info)
8561 {
8562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8563 struct wireless_dev *wdev = info->user_ptr[1];
8564 u64 cookie;
8565
8566 if (!info->attrs[NL80211_ATTR_COOKIE])
8567 return -EINVAL;
8568
8569 if (!rdev->ops->cancel_remain_on_channel)
8570 return -EOPNOTSUPP;
8571
8572 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8573
8574 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8575 }
8576
8577 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8578 u8 *rates, u8 rates_len)
8579 {
8580 u8 i;
8581 u32 mask = 0;
8582
8583 for (i = 0; i < rates_len; i++) {
8584 int rate = (rates[i] & 0x7f) * 5;
8585 int ridx;
8586
8587 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8588 struct ieee80211_rate *srate =
8589 &sband->bitrates[ridx];
8590 if (rate == srate->bitrate) {
8591 mask |= 1 << ridx;
8592 break;
8593 }
8594 }
8595 if (ridx == sband->n_bitrates)
8596 return 0; /* rate not found */
8597 }
8598
8599 return mask;
8600 }
8601
8602 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8603 u8 *rates, u8 rates_len,
8604 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8605 {
8606 u8 i;
8607
8608 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8609
8610 for (i = 0; i < rates_len; i++) {
8611 int ridx, rbit;
8612
8613 ridx = rates[i] / 8;
8614 rbit = BIT(rates[i] % 8);
8615
8616 /* check validity */
8617 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8618 return false;
8619
8620 /* check availability */
8621 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8622 mcs[ridx] |= rbit;
8623 else
8624 return false;
8625 }
8626
8627 return true;
8628 }
8629
8630 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8631 {
8632 u16 mcs_mask = 0;
8633
8634 switch (vht_mcs_map) {
8635 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8636 break;
8637 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8638 mcs_mask = 0x00FF;
8639 break;
8640 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8641 mcs_mask = 0x01FF;
8642 break;
8643 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8644 mcs_mask = 0x03FF;
8645 break;
8646 default:
8647 break;
8648 }
8649
8650 return mcs_mask;
8651 }
8652
8653 static void vht_build_mcs_mask(u16 vht_mcs_map,
8654 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8655 {
8656 u8 nss;
8657
8658 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8659 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8660 vht_mcs_map >>= 2;
8661 }
8662 }
8663
8664 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8665 struct nl80211_txrate_vht *txrate,
8666 u16 mcs[NL80211_VHT_NSS_MAX])
8667 {
8668 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8669 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8670 u8 i;
8671
8672 if (!sband->vht_cap.vht_supported)
8673 return false;
8674
8675 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8676
8677 /* Build vht_mcs_mask from VHT capabilities */
8678 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8679
8680 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8681 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8682 mcs[i] = txrate->mcs[i];
8683 else
8684 return false;
8685 }
8686
8687 return true;
8688 }
8689
8690 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8691 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8692 .len = NL80211_MAX_SUPP_RATES },
8693 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8694 .len = NL80211_MAX_SUPP_HT_RATES },
8695 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8696 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8697 };
8698
8699 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8700 struct genl_info *info)
8701 {
8702 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8703 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8704 struct cfg80211_bitrate_mask mask;
8705 int rem, i;
8706 struct net_device *dev = info->user_ptr[1];
8707 struct nlattr *tx_rates;
8708 struct ieee80211_supported_band *sband;
8709 u16 vht_tx_mcs_map;
8710
8711 if (!rdev->ops->set_bitrate_mask)
8712 return -EOPNOTSUPP;
8713
8714 memset(&mask, 0, sizeof(mask));
8715 /* Default to all rates enabled */
8716 for (i = 0; i < NUM_NL80211_BANDS; i++) {
8717 sband = rdev->wiphy.bands[i];
8718
8719 if (!sband)
8720 continue;
8721
8722 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8723 memcpy(mask.control[i].ht_mcs,
8724 sband->ht_cap.mcs.rx_mask,
8725 sizeof(mask.control[i].ht_mcs));
8726
8727 if (!sband->vht_cap.vht_supported)
8728 continue;
8729
8730 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8731 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8732 }
8733
8734 /* if no rates are given set it back to the defaults */
8735 if (!info->attrs[NL80211_ATTR_TX_RATES])
8736 goto out;
8737
8738 /*
8739 * The nested attribute uses enum nl80211_band as the index. This maps
8740 * directly to the enum nl80211_band values used in cfg80211.
8741 */
8742 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8743 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8744 enum nl80211_band band = nla_type(tx_rates);
8745 int err;
8746
8747 if (band < 0 || band >= NUM_NL80211_BANDS)
8748 return -EINVAL;
8749 sband = rdev->wiphy.bands[band];
8750 if (sband == NULL)
8751 return -EINVAL;
8752 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8753 nla_len(tx_rates), nl80211_txattr_policy);
8754 if (err)
8755 return err;
8756 if (tb[NL80211_TXRATE_LEGACY]) {
8757 mask.control[band].legacy = rateset_to_mask(
8758 sband,
8759 nla_data(tb[NL80211_TXRATE_LEGACY]),
8760 nla_len(tb[NL80211_TXRATE_LEGACY]));
8761 if ((mask.control[band].legacy == 0) &&
8762 nla_len(tb[NL80211_TXRATE_LEGACY]))
8763 return -EINVAL;
8764 }
8765 if (tb[NL80211_TXRATE_HT]) {
8766 if (!ht_rateset_to_mask(
8767 sband,
8768 nla_data(tb[NL80211_TXRATE_HT]),
8769 nla_len(tb[NL80211_TXRATE_HT]),
8770 mask.control[band].ht_mcs))
8771 return -EINVAL;
8772 }
8773 if (tb[NL80211_TXRATE_VHT]) {
8774 if (!vht_set_mcs_mask(
8775 sband,
8776 nla_data(tb[NL80211_TXRATE_VHT]),
8777 mask.control[band].vht_mcs))
8778 return -EINVAL;
8779 }
8780 if (tb[NL80211_TXRATE_GI]) {
8781 mask.control[band].gi =
8782 nla_get_u8(tb[NL80211_TXRATE_GI]);
8783 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8784 return -EINVAL;
8785 }
8786
8787 if (mask.control[band].legacy == 0) {
8788 /* don't allow empty legacy rates if HT or VHT
8789 * are not even supported.
8790 */
8791 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8792 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8793 return -EINVAL;
8794
8795 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8796 if (mask.control[band].ht_mcs[i])
8797 goto out;
8798
8799 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8800 if (mask.control[band].vht_mcs[i])
8801 goto out;
8802
8803 /* legacy and mcs rates may not be both empty */
8804 return -EINVAL;
8805 }
8806 }
8807
8808 out:
8809 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8810 }
8811
8812 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8813 {
8814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8815 struct wireless_dev *wdev = info->user_ptr[1];
8816 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8817
8818 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8819 return -EINVAL;
8820
8821 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8822 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8823
8824 switch (wdev->iftype) {
8825 case NL80211_IFTYPE_STATION:
8826 case NL80211_IFTYPE_ADHOC:
8827 case NL80211_IFTYPE_P2P_CLIENT:
8828 case NL80211_IFTYPE_AP:
8829 case NL80211_IFTYPE_AP_VLAN:
8830 case NL80211_IFTYPE_MESH_POINT:
8831 case NL80211_IFTYPE_P2P_GO:
8832 case NL80211_IFTYPE_P2P_DEVICE:
8833 break;
8834 default:
8835 return -EOPNOTSUPP;
8836 }
8837
8838 /* not much point in registering if we can't reply */
8839 if (!rdev->ops->mgmt_tx)
8840 return -EOPNOTSUPP;
8841
8842 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8843 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8844 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8845 }
8846
8847 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8848 {
8849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8850 struct wireless_dev *wdev = info->user_ptr[1];
8851 struct cfg80211_chan_def chandef;
8852 int err;
8853 void *hdr = NULL;
8854 u64 cookie;
8855 struct sk_buff *msg = NULL;
8856 struct cfg80211_mgmt_tx_params params = {
8857 .dont_wait_for_ack =
8858 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8859 };
8860
8861 if (!info->attrs[NL80211_ATTR_FRAME])
8862 return -EINVAL;
8863
8864 if (!rdev->ops->mgmt_tx)
8865 return -EOPNOTSUPP;
8866
8867 switch (wdev->iftype) {
8868 case NL80211_IFTYPE_P2P_DEVICE:
8869 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8870 return -EINVAL;
8871 case NL80211_IFTYPE_STATION:
8872 case NL80211_IFTYPE_ADHOC:
8873 case NL80211_IFTYPE_P2P_CLIENT:
8874 case NL80211_IFTYPE_AP:
8875 case NL80211_IFTYPE_AP_VLAN:
8876 case NL80211_IFTYPE_MESH_POINT:
8877 case NL80211_IFTYPE_P2P_GO:
8878 break;
8879 default:
8880 return -EOPNOTSUPP;
8881 }
8882
8883 if (info->attrs[NL80211_ATTR_DURATION]) {
8884 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8885 return -EINVAL;
8886 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8887
8888 /*
8889 * We should wait on the channel for at least a minimum amount
8890 * of time (10ms) but no longer than the driver supports.
8891 */
8892 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8893 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8894 return -EINVAL;
8895 }
8896
8897 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8898
8899 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8900 return -EINVAL;
8901
8902 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8903
8904 /* get the channel if any has been specified, otherwise pass NULL to
8905 * the driver. The latter will use the current one
8906 */
8907 chandef.chan = NULL;
8908 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8909 err = nl80211_parse_chandef(rdev, info, &chandef);
8910 if (err)
8911 return err;
8912 }
8913
8914 if (!chandef.chan && params.offchan)
8915 return -EINVAL;
8916
8917 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8918 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8919
8920 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8921 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8922 int i;
8923
8924 if (len % sizeof(u16))
8925 return -EINVAL;
8926
8927 params.n_csa_offsets = len / sizeof(u16);
8928 params.csa_offsets =
8929 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8930
8931 /* check that all the offsets fit the frame */
8932 for (i = 0; i < params.n_csa_offsets; i++) {
8933 if (params.csa_offsets[i] >= params.len)
8934 return -EINVAL;
8935 }
8936 }
8937
8938 if (!params.dont_wait_for_ack) {
8939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8940 if (!msg)
8941 return -ENOMEM;
8942
8943 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8944 NL80211_CMD_FRAME);
8945 if (!hdr) {
8946 err = -ENOBUFS;
8947 goto free_msg;
8948 }
8949 }
8950
8951 params.chan = chandef.chan;
8952 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8953 if (err)
8954 goto free_msg;
8955
8956 if (msg) {
8957 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
8958 NL80211_ATTR_PAD))
8959 goto nla_put_failure;
8960
8961 genlmsg_end(msg, hdr);
8962 return genlmsg_reply(msg, info);
8963 }
8964
8965 return 0;
8966
8967 nla_put_failure:
8968 err = -ENOBUFS;
8969 free_msg:
8970 nlmsg_free(msg);
8971 return err;
8972 }
8973
8974 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8975 {
8976 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8977 struct wireless_dev *wdev = info->user_ptr[1];
8978 u64 cookie;
8979
8980 if (!info->attrs[NL80211_ATTR_COOKIE])
8981 return -EINVAL;
8982
8983 if (!rdev->ops->mgmt_tx_cancel_wait)
8984 return -EOPNOTSUPP;
8985
8986 switch (wdev->iftype) {
8987 case NL80211_IFTYPE_STATION:
8988 case NL80211_IFTYPE_ADHOC:
8989 case NL80211_IFTYPE_P2P_CLIENT:
8990 case NL80211_IFTYPE_AP:
8991 case NL80211_IFTYPE_AP_VLAN:
8992 case NL80211_IFTYPE_P2P_GO:
8993 case NL80211_IFTYPE_P2P_DEVICE:
8994 break;
8995 default:
8996 return -EOPNOTSUPP;
8997 }
8998
8999 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9000
9001 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9002 }
9003
9004 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9005 {
9006 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9007 struct wireless_dev *wdev;
9008 struct net_device *dev = info->user_ptr[1];
9009 u8 ps_state;
9010 bool state;
9011 int err;
9012
9013 if (!info->attrs[NL80211_ATTR_PS_STATE])
9014 return -EINVAL;
9015
9016 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9017
9018 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9019 return -EINVAL;
9020
9021 wdev = dev->ieee80211_ptr;
9022
9023 if (!rdev->ops->set_power_mgmt)
9024 return -EOPNOTSUPP;
9025
9026 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9027
9028 if (state == wdev->ps)
9029 return 0;
9030
9031 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9032 if (!err)
9033 wdev->ps = state;
9034 return err;
9035 }
9036
9037 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9038 {
9039 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9040 enum nl80211_ps_state ps_state;
9041 struct wireless_dev *wdev;
9042 struct net_device *dev = info->user_ptr[1];
9043 struct sk_buff *msg;
9044 void *hdr;
9045 int err;
9046
9047 wdev = dev->ieee80211_ptr;
9048
9049 if (!rdev->ops->set_power_mgmt)
9050 return -EOPNOTSUPP;
9051
9052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9053 if (!msg)
9054 return -ENOMEM;
9055
9056 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9057 NL80211_CMD_GET_POWER_SAVE);
9058 if (!hdr) {
9059 err = -ENOBUFS;
9060 goto free_msg;
9061 }
9062
9063 if (wdev->ps)
9064 ps_state = NL80211_PS_ENABLED;
9065 else
9066 ps_state = NL80211_PS_DISABLED;
9067
9068 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9069 goto nla_put_failure;
9070
9071 genlmsg_end(msg, hdr);
9072 return genlmsg_reply(msg, info);
9073
9074 nla_put_failure:
9075 err = -ENOBUFS;
9076 free_msg:
9077 nlmsg_free(msg);
9078 return err;
9079 }
9080
9081 static const struct nla_policy
9082 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9083 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9084 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9085 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9086 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9087 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9088 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9089 };
9090
9091 static int nl80211_set_cqm_txe(struct genl_info *info,
9092 u32 rate, u32 pkts, u32 intvl)
9093 {
9094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9095 struct net_device *dev = info->user_ptr[1];
9096 struct wireless_dev *wdev = dev->ieee80211_ptr;
9097
9098 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9099 return -EINVAL;
9100
9101 if (!rdev->ops->set_cqm_txe_config)
9102 return -EOPNOTSUPP;
9103
9104 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9105 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9106 return -EOPNOTSUPP;
9107
9108 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9109 }
9110
9111 static int nl80211_set_cqm_rssi(struct genl_info *info,
9112 s32 threshold, u32 hysteresis)
9113 {
9114 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9115 struct net_device *dev = info->user_ptr[1];
9116 struct wireless_dev *wdev = dev->ieee80211_ptr;
9117
9118 if (threshold > 0)
9119 return -EINVAL;
9120
9121 /* disabling - hysteresis should also be zero then */
9122 if (threshold == 0)
9123 hysteresis = 0;
9124
9125 if (!rdev->ops->set_cqm_rssi_config)
9126 return -EOPNOTSUPP;
9127
9128 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9129 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9130 return -EOPNOTSUPP;
9131
9132 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9133 }
9134
9135 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9136 {
9137 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9138 struct nlattr *cqm;
9139 int err;
9140
9141 cqm = info->attrs[NL80211_ATTR_CQM];
9142 if (!cqm)
9143 return -EINVAL;
9144
9145 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9146 nl80211_attr_cqm_policy);
9147 if (err)
9148 return err;
9149
9150 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9151 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9152 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9153 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9154
9155 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9156 }
9157
9158 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9159 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9160 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9161 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9162 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9163 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9164
9165 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9166 }
9167
9168 return -EINVAL;
9169 }
9170
9171 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9172 {
9173 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9174 struct net_device *dev = info->user_ptr[1];
9175 struct ocb_setup setup = {};
9176 int err;
9177
9178 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9179 if (err)
9180 return err;
9181
9182 return cfg80211_join_ocb(rdev, dev, &setup);
9183 }
9184
9185 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9186 {
9187 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9188 struct net_device *dev = info->user_ptr[1];
9189
9190 return cfg80211_leave_ocb(rdev, dev);
9191 }
9192
9193 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9194 {
9195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9196 struct net_device *dev = info->user_ptr[1];
9197 struct mesh_config cfg;
9198 struct mesh_setup setup;
9199 int err;
9200
9201 /* start with default */
9202 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9203 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9204
9205 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9206 /* and parse parameters if given */
9207 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9208 if (err)
9209 return err;
9210 }
9211
9212 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9213 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9214 return -EINVAL;
9215
9216 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9217 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9218
9219 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9220 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9221 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9222 return -EINVAL;
9223
9224 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9225 setup.beacon_interval =
9226 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9227 if (setup.beacon_interval < 10 ||
9228 setup.beacon_interval > 10000)
9229 return -EINVAL;
9230 }
9231
9232 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9233 setup.dtim_period =
9234 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9235 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9236 return -EINVAL;
9237 }
9238
9239 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9240 /* parse additional setup parameters if given */
9241 err = nl80211_parse_mesh_setup(info, &setup);
9242 if (err)
9243 return err;
9244 }
9245
9246 if (setup.user_mpm)
9247 cfg.auto_open_plinks = false;
9248
9249 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9250 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9251 if (err)
9252 return err;
9253 } else {
9254 /* cfg80211_join_mesh() will sort it out */
9255 setup.chandef.chan = NULL;
9256 }
9257
9258 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9259 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9260 int n_rates =
9261 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9262 struct ieee80211_supported_band *sband;
9263
9264 if (!setup.chandef.chan)
9265 return -EINVAL;
9266
9267 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9268
9269 err = ieee80211_get_ratemask(sband, rates, n_rates,
9270 &setup.basic_rates);
9271 if (err)
9272 return err;
9273 }
9274
9275 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9276 }
9277
9278 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9279 {
9280 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9281 struct net_device *dev = info->user_ptr[1];
9282
9283 return cfg80211_leave_mesh(rdev, dev);
9284 }
9285
9286 #ifdef CONFIG_PM
9287 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9288 struct cfg80211_registered_device *rdev)
9289 {
9290 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9291 struct nlattr *nl_pats, *nl_pat;
9292 int i, pat_len;
9293
9294 if (!wowlan->n_patterns)
9295 return 0;
9296
9297 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9298 if (!nl_pats)
9299 return -ENOBUFS;
9300
9301 for (i = 0; i < wowlan->n_patterns; i++) {
9302 nl_pat = nla_nest_start(msg, i + 1);
9303 if (!nl_pat)
9304 return -ENOBUFS;
9305 pat_len = wowlan->patterns[i].pattern_len;
9306 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9307 wowlan->patterns[i].mask) ||
9308 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9309 wowlan->patterns[i].pattern) ||
9310 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9311 wowlan->patterns[i].pkt_offset))
9312 return -ENOBUFS;
9313 nla_nest_end(msg, nl_pat);
9314 }
9315 nla_nest_end(msg, nl_pats);
9316
9317 return 0;
9318 }
9319
9320 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9321 struct cfg80211_wowlan_tcp *tcp)
9322 {
9323 struct nlattr *nl_tcp;
9324
9325 if (!tcp)
9326 return 0;
9327
9328 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9329 if (!nl_tcp)
9330 return -ENOBUFS;
9331
9332 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9333 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9334 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9335 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9336 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9337 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9338 tcp->payload_len, tcp->payload) ||
9339 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9340 tcp->data_interval) ||
9341 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9342 tcp->wake_len, tcp->wake_data) ||
9343 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9344 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9345 return -ENOBUFS;
9346
9347 if (tcp->payload_seq.len &&
9348 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9349 sizeof(tcp->payload_seq), &tcp->payload_seq))
9350 return -ENOBUFS;
9351
9352 if (tcp->payload_tok.len &&
9353 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9354 sizeof(tcp->payload_tok) + tcp->tokens_size,
9355 &tcp->payload_tok))
9356 return -ENOBUFS;
9357
9358 nla_nest_end(msg, nl_tcp);
9359
9360 return 0;
9361 }
9362
9363 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9364 struct cfg80211_sched_scan_request *req)
9365 {
9366 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9367 int i;
9368
9369 if (!req)
9370 return 0;
9371
9372 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9373 if (!nd)
9374 return -ENOBUFS;
9375
9376 if (req->n_scan_plans == 1 &&
9377 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9378 req->scan_plans[0].interval * 1000))
9379 return -ENOBUFS;
9380
9381 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9382 return -ENOBUFS;
9383
9384 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9385 if (!freqs)
9386 return -ENOBUFS;
9387
9388 for (i = 0; i < req->n_channels; i++)
9389 nla_put_u32(msg, i, req->channels[i]->center_freq);
9390
9391 nla_nest_end(msg, freqs);
9392
9393 if (req->n_match_sets) {
9394 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9395 for (i = 0; i < req->n_match_sets; i++) {
9396 match = nla_nest_start(msg, i);
9397 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9398 req->match_sets[i].ssid.ssid_len,
9399 req->match_sets[i].ssid.ssid);
9400 nla_nest_end(msg, match);
9401 }
9402 nla_nest_end(msg, matches);
9403 }
9404
9405 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9406 if (!scan_plans)
9407 return -ENOBUFS;
9408
9409 for (i = 0; i < req->n_scan_plans; i++) {
9410 scan_plan = nla_nest_start(msg, i + 1);
9411 if (!scan_plan ||
9412 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9413 req->scan_plans[i].interval) ||
9414 (req->scan_plans[i].iterations &&
9415 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9416 req->scan_plans[i].iterations)))
9417 return -ENOBUFS;
9418 nla_nest_end(msg, scan_plan);
9419 }
9420 nla_nest_end(msg, scan_plans);
9421
9422 nla_nest_end(msg, nd);
9423
9424 return 0;
9425 }
9426
9427 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9428 {
9429 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9430 struct sk_buff *msg;
9431 void *hdr;
9432 u32 size = NLMSG_DEFAULT_SIZE;
9433
9434 if (!rdev->wiphy.wowlan)
9435 return -EOPNOTSUPP;
9436
9437 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9438 /* adjust size to have room for all the data */
9439 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9440 rdev->wiphy.wowlan_config->tcp->payload_len +
9441 rdev->wiphy.wowlan_config->tcp->wake_len +
9442 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9443 }
9444
9445 msg = nlmsg_new(size, GFP_KERNEL);
9446 if (!msg)
9447 return -ENOMEM;
9448
9449 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9450 NL80211_CMD_GET_WOWLAN);
9451 if (!hdr)
9452 goto nla_put_failure;
9453
9454 if (rdev->wiphy.wowlan_config) {
9455 struct nlattr *nl_wowlan;
9456
9457 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9458 if (!nl_wowlan)
9459 goto nla_put_failure;
9460
9461 if ((rdev->wiphy.wowlan_config->any &&
9462 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9463 (rdev->wiphy.wowlan_config->disconnect &&
9464 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9465 (rdev->wiphy.wowlan_config->magic_pkt &&
9466 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9467 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9468 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9469 (rdev->wiphy.wowlan_config->eap_identity_req &&
9470 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9471 (rdev->wiphy.wowlan_config->four_way_handshake &&
9472 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9473 (rdev->wiphy.wowlan_config->rfkill_release &&
9474 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9475 goto nla_put_failure;
9476
9477 if (nl80211_send_wowlan_patterns(msg, rdev))
9478 goto nla_put_failure;
9479
9480 if (nl80211_send_wowlan_tcp(msg,
9481 rdev->wiphy.wowlan_config->tcp))
9482 goto nla_put_failure;
9483
9484 if (nl80211_send_wowlan_nd(
9485 msg,
9486 rdev->wiphy.wowlan_config->nd_config))
9487 goto nla_put_failure;
9488
9489 nla_nest_end(msg, nl_wowlan);
9490 }
9491
9492 genlmsg_end(msg, hdr);
9493 return genlmsg_reply(msg, info);
9494
9495 nla_put_failure:
9496 nlmsg_free(msg);
9497 return -ENOBUFS;
9498 }
9499
9500 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9501 struct nlattr *attr,
9502 struct cfg80211_wowlan *trig)
9503 {
9504 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9505 struct cfg80211_wowlan_tcp *cfg;
9506 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9507 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9508 u32 size;
9509 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9510 int err, port;
9511
9512 if (!rdev->wiphy.wowlan->tcp)
9513 return -EINVAL;
9514
9515 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9516 nla_data(attr), nla_len(attr),
9517 nl80211_wowlan_tcp_policy);
9518 if (err)
9519 return err;
9520
9521 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9522 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9523 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9524 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9525 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9526 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9527 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9528 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9529 return -EINVAL;
9530
9531 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9532 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9533 return -EINVAL;
9534
9535 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9536 rdev->wiphy.wowlan->tcp->data_interval_max ||
9537 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9538 return -EINVAL;
9539
9540 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9541 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9542 return -EINVAL;
9543
9544 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9545 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9546 return -EINVAL;
9547
9548 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9549 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9550
9551 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9552 tokens_size = tokln - sizeof(*tok);
9553
9554 if (!tok->len || tokens_size % tok->len)
9555 return -EINVAL;
9556 if (!rdev->wiphy.wowlan->tcp->tok)
9557 return -EINVAL;
9558 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9559 return -EINVAL;
9560 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9561 return -EINVAL;
9562 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9563 return -EINVAL;
9564 if (tok->offset + tok->len > data_size)
9565 return -EINVAL;
9566 }
9567
9568 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9569 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9570 if (!rdev->wiphy.wowlan->tcp->seq)
9571 return -EINVAL;
9572 if (seq->len == 0 || seq->len > 4)
9573 return -EINVAL;
9574 if (seq->len + seq->offset > data_size)
9575 return -EINVAL;
9576 }
9577
9578 size = sizeof(*cfg);
9579 size += data_size;
9580 size += wake_size + wake_mask_size;
9581 size += tokens_size;
9582
9583 cfg = kzalloc(size, GFP_KERNEL);
9584 if (!cfg)
9585 return -ENOMEM;
9586 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9587 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9588 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9589 ETH_ALEN);
9590 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9591 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9592 else
9593 port = 0;
9594 #ifdef CONFIG_INET
9595 /* allocate a socket and port for it and use it */
9596 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9597 IPPROTO_TCP, &cfg->sock, 1);
9598 if (err) {
9599 kfree(cfg);
9600 return err;
9601 }
9602 if (inet_csk_get_port(cfg->sock->sk, port)) {
9603 sock_release(cfg->sock);
9604 kfree(cfg);
9605 return -EADDRINUSE;
9606 }
9607 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9608 #else
9609 if (!port) {
9610 kfree(cfg);
9611 return -EINVAL;
9612 }
9613 cfg->src_port = port;
9614 #endif
9615
9616 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9617 cfg->payload_len = data_size;
9618 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9619 memcpy((void *)cfg->payload,
9620 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9621 data_size);
9622 if (seq)
9623 cfg->payload_seq = *seq;
9624 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9625 cfg->wake_len = wake_size;
9626 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9627 memcpy((void *)cfg->wake_data,
9628 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9629 wake_size);
9630 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9631 data_size + wake_size;
9632 memcpy((void *)cfg->wake_mask,
9633 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9634 wake_mask_size);
9635 if (tok) {
9636 cfg->tokens_size = tokens_size;
9637 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9638 }
9639
9640 trig->tcp = cfg;
9641
9642 return 0;
9643 }
9644
9645 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9646 const struct wiphy_wowlan_support *wowlan,
9647 struct nlattr *attr,
9648 struct cfg80211_wowlan *trig)
9649 {
9650 struct nlattr **tb;
9651 int err;
9652
9653 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9654 if (!tb)
9655 return -ENOMEM;
9656
9657 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9658 err = -EOPNOTSUPP;
9659 goto out;
9660 }
9661
9662 err = nla_parse(tb, NL80211_ATTR_MAX,
9663 nla_data(attr), nla_len(attr),
9664 nl80211_policy);
9665 if (err)
9666 goto out;
9667
9668 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9669 err = PTR_ERR_OR_ZERO(trig->nd_config);
9670 if (err)
9671 trig->nd_config = NULL;
9672
9673 out:
9674 kfree(tb);
9675 return err;
9676 }
9677
9678 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9679 {
9680 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9681 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9682 struct cfg80211_wowlan new_triggers = {};
9683 struct cfg80211_wowlan *ntrig;
9684 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9685 int err, i;
9686 bool prev_enabled = rdev->wiphy.wowlan_config;
9687 bool regular = false;
9688
9689 if (!wowlan)
9690 return -EOPNOTSUPP;
9691
9692 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9693 cfg80211_rdev_free_wowlan(rdev);
9694 rdev->wiphy.wowlan_config = NULL;
9695 goto set_wakeup;
9696 }
9697
9698 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9699 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9700 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9701 nl80211_wowlan_policy);
9702 if (err)
9703 return err;
9704
9705 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9706 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9707 return -EINVAL;
9708 new_triggers.any = true;
9709 }
9710
9711 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9712 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9713 return -EINVAL;
9714 new_triggers.disconnect = true;
9715 regular = true;
9716 }
9717
9718 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9719 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9720 return -EINVAL;
9721 new_triggers.magic_pkt = true;
9722 regular = true;
9723 }
9724
9725 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9726 return -EINVAL;
9727
9728 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9729 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9730 return -EINVAL;
9731 new_triggers.gtk_rekey_failure = true;
9732 regular = true;
9733 }
9734
9735 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9736 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9737 return -EINVAL;
9738 new_triggers.eap_identity_req = true;
9739 regular = true;
9740 }
9741
9742 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9743 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9744 return -EINVAL;
9745 new_triggers.four_way_handshake = true;
9746 regular = true;
9747 }
9748
9749 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9750 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9751 return -EINVAL;
9752 new_triggers.rfkill_release = true;
9753 regular = true;
9754 }
9755
9756 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9757 struct nlattr *pat;
9758 int n_patterns = 0;
9759 int rem, pat_len, mask_len, pkt_offset;
9760 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9761
9762 regular = true;
9763
9764 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9765 rem)
9766 n_patterns++;
9767 if (n_patterns > wowlan->n_patterns)
9768 return -EINVAL;
9769
9770 new_triggers.patterns = kcalloc(n_patterns,
9771 sizeof(new_triggers.patterns[0]),
9772 GFP_KERNEL);
9773 if (!new_triggers.patterns)
9774 return -ENOMEM;
9775
9776 new_triggers.n_patterns = n_patterns;
9777 i = 0;
9778
9779 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9780 rem) {
9781 u8 *mask_pat;
9782
9783 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9784 nla_len(pat), NULL);
9785 err = -EINVAL;
9786 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9787 !pat_tb[NL80211_PKTPAT_PATTERN])
9788 goto error;
9789 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9790 mask_len = DIV_ROUND_UP(pat_len, 8);
9791 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9792 goto error;
9793 if (pat_len > wowlan->pattern_max_len ||
9794 pat_len < wowlan->pattern_min_len)
9795 goto error;
9796
9797 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9798 pkt_offset = 0;
9799 else
9800 pkt_offset = nla_get_u32(
9801 pat_tb[NL80211_PKTPAT_OFFSET]);
9802 if (pkt_offset > wowlan->max_pkt_offset)
9803 goto error;
9804 new_triggers.patterns[i].pkt_offset = pkt_offset;
9805
9806 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9807 if (!mask_pat) {
9808 err = -ENOMEM;
9809 goto error;
9810 }
9811 new_triggers.patterns[i].mask = mask_pat;
9812 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9813 mask_len);
9814 mask_pat += mask_len;
9815 new_triggers.patterns[i].pattern = mask_pat;
9816 new_triggers.patterns[i].pattern_len = pat_len;
9817 memcpy(mask_pat,
9818 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9819 pat_len);
9820 i++;
9821 }
9822 }
9823
9824 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9825 regular = true;
9826 err = nl80211_parse_wowlan_tcp(
9827 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9828 &new_triggers);
9829 if (err)
9830 goto error;
9831 }
9832
9833 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9834 regular = true;
9835 err = nl80211_parse_wowlan_nd(
9836 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9837 &new_triggers);
9838 if (err)
9839 goto error;
9840 }
9841
9842 /* The 'any' trigger means the device continues operating more or less
9843 * as in its normal operation mode and wakes up the host on most of the
9844 * normal interrupts (like packet RX, ...)
9845 * It therefore makes little sense to combine with the more constrained
9846 * wakeup trigger modes.
9847 */
9848 if (new_triggers.any && regular) {
9849 err = -EINVAL;
9850 goto error;
9851 }
9852
9853 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9854 if (!ntrig) {
9855 err = -ENOMEM;
9856 goto error;
9857 }
9858 cfg80211_rdev_free_wowlan(rdev);
9859 rdev->wiphy.wowlan_config = ntrig;
9860
9861 set_wakeup:
9862 if (rdev->ops->set_wakeup &&
9863 prev_enabled != !!rdev->wiphy.wowlan_config)
9864 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9865
9866 return 0;
9867 error:
9868 for (i = 0; i < new_triggers.n_patterns; i++)
9869 kfree(new_triggers.patterns[i].mask);
9870 kfree(new_triggers.patterns);
9871 if (new_triggers.tcp && new_triggers.tcp->sock)
9872 sock_release(new_triggers.tcp->sock);
9873 kfree(new_triggers.tcp);
9874 kfree(new_triggers.nd_config);
9875 return err;
9876 }
9877 #endif
9878
9879 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9880 struct cfg80211_registered_device *rdev)
9881 {
9882 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9883 int i, j, pat_len;
9884 struct cfg80211_coalesce_rules *rule;
9885
9886 if (!rdev->coalesce->n_rules)
9887 return 0;
9888
9889 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9890 if (!nl_rules)
9891 return -ENOBUFS;
9892
9893 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9894 nl_rule = nla_nest_start(msg, i + 1);
9895 if (!nl_rule)
9896 return -ENOBUFS;
9897
9898 rule = &rdev->coalesce->rules[i];
9899 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9900 rule->delay))
9901 return -ENOBUFS;
9902
9903 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9904 rule->condition))
9905 return -ENOBUFS;
9906
9907 nl_pats = nla_nest_start(msg,
9908 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9909 if (!nl_pats)
9910 return -ENOBUFS;
9911
9912 for (j = 0; j < rule->n_patterns; j++) {
9913 nl_pat = nla_nest_start(msg, j + 1);
9914 if (!nl_pat)
9915 return -ENOBUFS;
9916 pat_len = rule->patterns[j].pattern_len;
9917 if (nla_put(msg, NL80211_PKTPAT_MASK,
9918 DIV_ROUND_UP(pat_len, 8),
9919 rule->patterns[j].mask) ||
9920 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9921 rule->patterns[j].pattern) ||
9922 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9923 rule->patterns[j].pkt_offset))
9924 return -ENOBUFS;
9925 nla_nest_end(msg, nl_pat);
9926 }
9927 nla_nest_end(msg, nl_pats);
9928 nla_nest_end(msg, nl_rule);
9929 }
9930 nla_nest_end(msg, nl_rules);
9931
9932 return 0;
9933 }
9934
9935 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9936 {
9937 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9938 struct sk_buff *msg;
9939 void *hdr;
9940
9941 if (!rdev->wiphy.coalesce)
9942 return -EOPNOTSUPP;
9943
9944 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9945 if (!msg)
9946 return -ENOMEM;
9947
9948 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9949 NL80211_CMD_GET_COALESCE);
9950 if (!hdr)
9951 goto nla_put_failure;
9952
9953 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9954 goto nla_put_failure;
9955
9956 genlmsg_end(msg, hdr);
9957 return genlmsg_reply(msg, info);
9958
9959 nla_put_failure:
9960 nlmsg_free(msg);
9961 return -ENOBUFS;
9962 }
9963
9964 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9965 {
9966 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9967 int i, j;
9968 struct cfg80211_coalesce_rules *rule;
9969
9970 if (!coalesce)
9971 return;
9972
9973 for (i = 0; i < coalesce->n_rules; i++) {
9974 rule = &coalesce->rules[i];
9975 for (j = 0; j < rule->n_patterns; j++)
9976 kfree(rule->patterns[j].mask);
9977 kfree(rule->patterns);
9978 }
9979 kfree(coalesce->rules);
9980 kfree(coalesce);
9981 rdev->coalesce = NULL;
9982 }
9983
9984 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9985 struct nlattr *rule,
9986 struct cfg80211_coalesce_rules *new_rule)
9987 {
9988 int err, i;
9989 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9990 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9991 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9992 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9993
9994 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9995 nla_len(rule), nl80211_coalesce_policy);
9996 if (err)
9997 return err;
9998
9999 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10000 new_rule->delay =
10001 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10002 if (new_rule->delay > coalesce->max_delay)
10003 return -EINVAL;
10004
10005 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10006 new_rule->condition =
10007 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10008 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10009 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10010 return -EINVAL;
10011
10012 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10013 return -EINVAL;
10014
10015 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10016 rem)
10017 n_patterns++;
10018 if (n_patterns > coalesce->n_patterns)
10019 return -EINVAL;
10020
10021 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10022 GFP_KERNEL);
10023 if (!new_rule->patterns)
10024 return -ENOMEM;
10025
10026 new_rule->n_patterns = n_patterns;
10027 i = 0;
10028
10029 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10030 rem) {
10031 u8 *mask_pat;
10032
10033 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
10034 nla_len(pat), NULL);
10035 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10036 !pat_tb[NL80211_PKTPAT_PATTERN])
10037 return -EINVAL;
10038 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10039 mask_len = DIV_ROUND_UP(pat_len, 8);
10040 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10041 return -EINVAL;
10042 if (pat_len > coalesce->pattern_max_len ||
10043 pat_len < coalesce->pattern_min_len)
10044 return -EINVAL;
10045
10046 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10047 pkt_offset = 0;
10048 else
10049 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10050 if (pkt_offset > coalesce->max_pkt_offset)
10051 return -EINVAL;
10052 new_rule->patterns[i].pkt_offset = pkt_offset;
10053
10054 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10055 if (!mask_pat)
10056 return -ENOMEM;
10057
10058 new_rule->patterns[i].mask = mask_pat;
10059 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10060 mask_len);
10061
10062 mask_pat += mask_len;
10063 new_rule->patterns[i].pattern = mask_pat;
10064 new_rule->patterns[i].pattern_len = pat_len;
10065 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10066 pat_len);
10067 i++;
10068 }
10069
10070 return 0;
10071 }
10072
10073 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10074 {
10075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10076 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10077 struct cfg80211_coalesce new_coalesce = {};
10078 struct cfg80211_coalesce *n_coalesce;
10079 int err, rem_rule, n_rules = 0, i, j;
10080 struct nlattr *rule;
10081 struct cfg80211_coalesce_rules *tmp_rule;
10082
10083 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10084 return -EOPNOTSUPP;
10085
10086 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10087 cfg80211_rdev_free_coalesce(rdev);
10088 rdev_set_coalesce(rdev, NULL);
10089 return 0;
10090 }
10091
10092 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10093 rem_rule)
10094 n_rules++;
10095 if (n_rules > coalesce->n_rules)
10096 return -EINVAL;
10097
10098 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10099 GFP_KERNEL);
10100 if (!new_coalesce.rules)
10101 return -ENOMEM;
10102
10103 new_coalesce.n_rules = n_rules;
10104 i = 0;
10105
10106 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10107 rem_rule) {
10108 err = nl80211_parse_coalesce_rule(rdev, rule,
10109 &new_coalesce.rules[i]);
10110 if (err)
10111 goto error;
10112
10113 i++;
10114 }
10115
10116 err = rdev_set_coalesce(rdev, &new_coalesce);
10117 if (err)
10118 goto error;
10119
10120 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10121 if (!n_coalesce) {
10122 err = -ENOMEM;
10123 goto error;
10124 }
10125 cfg80211_rdev_free_coalesce(rdev);
10126 rdev->coalesce = n_coalesce;
10127
10128 return 0;
10129 error:
10130 for (i = 0; i < new_coalesce.n_rules; i++) {
10131 tmp_rule = &new_coalesce.rules[i];
10132 for (j = 0; j < tmp_rule->n_patterns; j++)
10133 kfree(tmp_rule->patterns[j].mask);
10134 kfree(tmp_rule->patterns);
10135 }
10136 kfree(new_coalesce.rules);
10137
10138 return err;
10139 }
10140
10141 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10142 {
10143 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10144 struct net_device *dev = info->user_ptr[1];
10145 struct wireless_dev *wdev = dev->ieee80211_ptr;
10146 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10147 struct cfg80211_gtk_rekey_data rekey_data;
10148 int err;
10149
10150 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10151 return -EINVAL;
10152
10153 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
10154 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
10155 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
10156 nl80211_rekey_policy);
10157 if (err)
10158 return err;
10159
10160 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10161 return -ERANGE;
10162 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10163 return -ERANGE;
10164 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10165 return -ERANGE;
10166
10167 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10168 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10169 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10170
10171 wdev_lock(wdev);
10172 if (!wdev->current_bss) {
10173 err = -ENOTCONN;
10174 goto out;
10175 }
10176
10177 if (!rdev->ops->set_rekey_data) {
10178 err = -EOPNOTSUPP;
10179 goto out;
10180 }
10181
10182 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10183 out:
10184 wdev_unlock(wdev);
10185 return err;
10186 }
10187
10188 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10189 struct genl_info *info)
10190 {
10191 struct net_device *dev = info->user_ptr[1];
10192 struct wireless_dev *wdev = dev->ieee80211_ptr;
10193
10194 if (wdev->iftype != NL80211_IFTYPE_AP &&
10195 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10196 return -EINVAL;
10197
10198 if (wdev->ap_unexpected_nlportid)
10199 return -EBUSY;
10200
10201 wdev->ap_unexpected_nlportid = info->snd_portid;
10202 return 0;
10203 }
10204
10205 static int nl80211_probe_client(struct sk_buff *skb,
10206 struct genl_info *info)
10207 {
10208 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10209 struct net_device *dev = info->user_ptr[1];
10210 struct wireless_dev *wdev = dev->ieee80211_ptr;
10211 struct sk_buff *msg;
10212 void *hdr;
10213 const u8 *addr;
10214 u64 cookie;
10215 int err;
10216
10217 if (wdev->iftype != NL80211_IFTYPE_AP &&
10218 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10219 return -EOPNOTSUPP;
10220
10221 if (!info->attrs[NL80211_ATTR_MAC])
10222 return -EINVAL;
10223
10224 if (!rdev->ops->probe_client)
10225 return -EOPNOTSUPP;
10226
10227 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10228 if (!msg)
10229 return -ENOMEM;
10230
10231 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10232 NL80211_CMD_PROBE_CLIENT);
10233 if (!hdr) {
10234 err = -ENOBUFS;
10235 goto free_msg;
10236 }
10237
10238 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10239
10240 err = rdev_probe_client(rdev, dev, addr, &cookie);
10241 if (err)
10242 goto free_msg;
10243
10244 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10245 NL80211_ATTR_PAD))
10246 goto nla_put_failure;
10247
10248 genlmsg_end(msg, hdr);
10249
10250 return genlmsg_reply(msg, info);
10251
10252 nla_put_failure:
10253 err = -ENOBUFS;
10254 free_msg:
10255 nlmsg_free(msg);
10256 return err;
10257 }
10258
10259 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10260 {
10261 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10262 struct cfg80211_beacon_registration *reg, *nreg;
10263 int rv;
10264
10265 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10266 return -EOPNOTSUPP;
10267
10268 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10269 if (!nreg)
10270 return -ENOMEM;
10271
10272 /* First, check if already registered. */
10273 spin_lock_bh(&rdev->beacon_registrations_lock);
10274 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10275 if (reg->nlportid == info->snd_portid) {
10276 rv = -EALREADY;
10277 goto out_err;
10278 }
10279 }
10280 /* Add it to the list */
10281 nreg->nlportid = info->snd_portid;
10282 list_add(&nreg->list, &rdev->beacon_registrations);
10283
10284 spin_unlock_bh(&rdev->beacon_registrations_lock);
10285
10286 return 0;
10287 out_err:
10288 spin_unlock_bh(&rdev->beacon_registrations_lock);
10289 kfree(nreg);
10290 return rv;
10291 }
10292
10293 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10294 {
10295 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10296 struct wireless_dev *wdev = info->user_ptr[1];
10297 int err;
10298
10299 if (!rdev->ops->start_p2p_device)
10300 return -EOPNOTSUPP;
10301
10302 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10303 return -EOPNOTSUPP;
10304
10305 if (wdev->p2p_started)
10306 return 0;
10307
10308 if (rfkill_blocked(rdev->rfkill))
10309 return -ERFKILL;
10310
10311 err = rdev_start_p2p_device(rdev, wdev);
10312 if (err)
10313 return err;
10314
10315 wdev->p2p_started = true;
10316 rdev->opencount++;
10317
10318 return 0;
10319 }
10320
10321 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10322 {
10323 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10324 struct wireless_dev *wdev = info->user_ptr[1];
10325
10326 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10327 return -EOPNOTSUPP;
10328
10329 if (!rdev->ops->stop_p2p_device)
10330 return -EOPNOTSUPP;
10331
10332 cfg80211_stop_p2p_device(rdev, wdev);
10333
10334 return 0;
10335 }
10336
10337 static int nl80211_get_protocol_features(struct sk_buff *skb,
10338 struct genl_info *info)
10339 {
10340 void *hdr;
10341 struct sk_buff *msg;
10342
10343 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10344 if (!msg)
10345 return -ENOMEM;
10346
10347 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10348 NL80211_CMD_GET_PROTOCOL_FEATURES);
10349 if (!hdr)
10350 goto nla_put_failure;
10351
10352 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
10353 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
10354 goto nla_put_failure;
10355
10356 genlmsg_end(msg, hdr);
10357 return genlmsg_reply(msg, info);
10358
10359 nla_put_failure:
10360 kfree_skb(msg);
10361 return -ENOBUFS;
10362 }
10363
10364 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10365 {
10366 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10367 struct cfg80211_update_ft_ies_params ft_params;
10368 struct net_device *dev = info->user_ptr[1];
10369
10370 if (!rdev->ops->update_ft_ies)
10371 return -EOPNOTSUPP;
10372
10373 if (!info->attrs[NL80211_ATTR_MDID] ||
10374 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10375 return -EINVAL;
10376
10377 memset(&ft_params, 0, sizeof(ft_params));
10378 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10379 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10380 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10381
10382 return rdev_update_ft_ies(rdev, dev, &ft_params);
10383 }
10384
10385 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10386 struct genl_info *info)
10387 {
10388 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10389 struct wireless_dev *wdev = info->user_ptr[1];
10390 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10391 u16 duration;
10392 int ret;
10393
10394 if (!rdev->ops->crit_proto_start)
10395 return -EOPNOTSUPP;
10396
10397 if (WARN_ON(!rdev->ops->crit_proto_stop))
10398 return -EINVAL;
10399
10400 if (rdev->crit_proto_nlportid)
10401 return -EBUSY;
10402
10403 /* determine protocol if provided */
10404 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10405 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10406
10407 if (proto >= NUM_NL80211_CRIT_PROTO)
10408 return -EINVAL;
10409
10410 /* timeout must be provided */
10411 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10412 return -EINVAL;
10413
10414 duration =
10415 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10416
10417 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10418 return -ERANGE;
10419
10420 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10421 if (!ret)
10422 rdev->crit_proto_nlportid = info->snd_portid;
10423
10424 return ret;
10425 }
10426
10427 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10428 struct genl_info *info)
10429 {
10430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10431 struct wireless_dev *wdev = info->user_ptr[1];
10432
10433 if (!rdev->ops->crit_proto_stop)
10434 return -EOPNOTSUPP;
10435
10436 if (rdev->crit_proto_nlportid) {
10437 rdev->crit_proto_nlportid = 0;
10438 rdev_crit_proto_stop(rdev, wdev);
10439 }
10440 return 0;
10441 }
10442
10443 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10444 {
10445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10446 struct wireless_dev *wdev =
10447 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10448 int i, err;
10449 u32 vid, subcmd;
10450
10451 if (!rdev->wiphy.vendor_commands)
10452 return -EOPNOTSUPP;
10453
10454 if (IS_ERR(wdev)) {
10455 err = PTR_ERR(wdev);
10456 if (err != -EINVAL)
10457 return err;
10458 wdev = NULL;
10459 } else if (wdev->wiphy != &rdev->wiphy) {
10460 return -EINVAL;
10461 }
10462
10463 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10464 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10465 return -EINVAL;
10466
10467 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10468 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10469 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10470 const struct wiphy_vendor_command *vcmd;
10471 void *data = NULL;
10472 int len = 0;
10473
10474 vcmd = &rdev->wiphy.vendor_commands[i];
10475
10476 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10477 continue;
10478
10479 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10480 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10481 if (!wdev)
10482 return -EINVAL;
10483 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10484 !wdev->netdev)
10485 return -EINVAL;
10486
10487 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10488 if (wdev->netdev &&
10489 !netif_running(wdev->netdev))
10490 return -ENETDOWN;
10491 if (!wdev->netdev && !wdev->p2p_started)
10492 return -ENETDOWN;
10493 }
10494
10495 if (!vcmd->doit)
10496 return -EOPNOTSUPP;
10497 } else {
10498 wdev = NULL;
10499 }
10500
10501 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10502 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10503 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10504 }
10505
10506 rdev->cur_cmd_info = info;
10507 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10508 data, len);
10509 rdev->cur_cmd_info = NULL;
10510 return err;
10511 }
10512
10513 return -EOPNOTSUPP;
10514 }
10515
10516 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10517 struct netlink_callback *cb,
10518 struct cfg80211_registered_device **rdev,
10519 struct wireless_dev **wdev)
10520 {
10521 u32 vid, subcmd;
10522 unsigned int i;
10523 int vcmd_idx = -1;
10524 int err;
10525 void *data = NULL;
10526 unsigned int data_len = 0;
10527
10528 rtnl_lock();
10529
10530 if (cb->args[0]) {
10531 /* subtract the 1 again here */
10532 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10533 struct wireless_dev *tmp;
10534
10535 if (!wiphy) {
10536 err = -ENODEV;
10537 goto out_unlock;
10538 }
10539 *rdev = wiphy_to_rdev(wiphy);
10540 *wdev = NULL;
10541
10542 if (cb->args[1]) {
10543 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
10544 if (tmp->identifier == cb->args[1] - 1) {
10545 *wdev = tmp;
10546 break;
10547 }
10548 }
10549 }
10550
10551 /* keep rtnl locked in successful case */
10552 return 0;
10553 }
10554
10555 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10556 nl80211_fam.attrbuf, nl80211_fam.maxattr,
10557 nl80211_policy);
10558 if (err)
10559 goto out_unlock;
10560
10561 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10562 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
10563 err = -EINVAL;
10564 goto out_unlock;
10565 }
10566
10567 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10568 nl80211_fam.attrbuf);
10569 if (IS_ERR(*wdev))
10570 *wdev = NULL;
10571
10572 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10573 nl80211_fam.attrbuf);
10574 if (IS_ERR(*rdev)) {
10575 err = PTR_ERR(*rdev);
10576 goto out_unlock;
10577 }
10578
10579 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10580 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10581
10582 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10583 const struct wiphy_vendor_command *vcmd;
10584
10585 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10586
10587 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10588 continue;
10589
10590 if (!vcmd->dumpit) {
10591 err = -EOPNOTSUPP;
10592 goto out_unlock;
10593 }
10594
10595 vcmd_idx = i;
10596 break;
10597 }
10598
10599 if (vcmd_idx < 0) {
10600 err = -EOPNOTSUPP;
10601 goto out_unlock;
10602 }
10603
10604 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10605 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10606 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10607 }
10608
10609 /* 0 is the first index - add 1 to parse only once */
10610 cb->args[0] = (*rdev)->wiphy_idx + 1;
10611 /* add 1 to know if it was NULL */
10612 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10613 cb->args[2] = vcmd_idx;
10614 cb->args[3] = (unsigned long)data;
10615 cb->args[4] = data_len;
10616
10617 /* keep rtnl locked in successful case */
10618 return 0;
10619 out_unlock:
10620 rtnl_unlock();
10621 return err;
10622 }
10623
10624 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10625 struct netlink_callback *cb)
10626 {
10627 struct cfg80211_registered_device *rdev;
10628 struct wireless_dev *wdev;
10629 unsigned int vcmd_idx;
10630 const struct wiphy_vendor_command *vcmd;
10631 void *data;
10632 int data_len;
10633 int err;
10634 struct nlattr *vendor_data;
10635
10636 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10637 if (err)
10638 return err;
10639
10640 vcmd_idx = cb->args[2];
10641 data = (void *)cb->args[3];
10642 data_len = cb->args[4];
10643 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10644
10645 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10646 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10647 if (!wdev)
10648 return -EINVAL;
10649 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10650 !wdev->netdev)
10651 return -EINVAL;
10652
10653 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10654 if (wdev->netdev &&
10655 !netif_running(wdev->netdev))
10656 return -ENETDOWN;
10657 if (!wdev->netdev && !wdev->p2p_started)
10658 return -ENETDOWN;
10659 }
10660 }
10661
10662 while (1) {
10663 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10664 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10665 NL80211_CMD_VENDOR);
10666 if (!hdr)
10667 break;
10668
10669 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10670 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10671 wdev_id(wdev),
10672 NL80211_ATTR_PAD))) {
10673 genlmsg_cancel(skb, hdr);
10674 break;
10675 }
10676
10677 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10678 if (!vendor_data) {
10679 genlmsg_cancel(skb, hdr);
10680 break;
10681 }
10682
10683 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10684 (unsigned long *)&cb->args[5]);
10685 nla_nest_end(skb, vendor_data);
10686
10687 if (err == -ENOBUFS || err == -ENOENT) {
10688 genlmsg_cancel(skb, hdr);
10689 break;
10690 } else if (err) {
10691 genlmsg_cancel(skb, hdr);
10692 goto out;
10693 }
10694
10695 genlmsg_end(skb, hdr);
10696 }
10697
10698 err = skb->len;
10699 out:
10700 rtnl_unlock();
10701 return err;
10702 }
10703
10704 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10705 enum nl80211_commands cmd,
10706 enum nl80211_attrs attr,
10707 int approxlen)
10708 {
10709 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10710
10711 if (WARN_ON(!rdev->cur_cmd_info))
10712 return NULL;
10713
10714 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10715 rdev->cur_cmd_info->snd_portid,
10716 rdev->cur_cmd_info->snd_seq,
10717 cmd, attr, NULL, GFP_KERNEL);
10718 }
10719 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10720
10721 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10722 {
10723 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10724 void *hdr = ((void **)skb->cb)[1];
10725 struct nlattr *data = ((void **)skb->cb)[2];
10726
10727 /* clear CB data for netlink core to own from now on */
10728 memset(skb->cb, 0, sizeof(skb->cb));
10729
10730 if (WARN_ON(!rdev->cur_cmd_info)) {
10731 kfree_skb(skb);
10732 return -EINVAL;
10733 }
10734
10735 nla_nest_end(skb, data);
10736 genlmsg_end(skb, hdr);
10737 return genlmsg_reply(skb, rdev->cur_cmd_info);
10738 }
10739 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10740
10741 static int nl80211_set_qos_map(struct sk_buff *skb,
10742 struct genl_info *info)
10743 {
10744 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10745 struct cfg80211_qos_map *qos_map = NULL;
10746 struct net_device *dev = info->user_ptr[1];
10747 u8 *pos, len, num_des, des_len, des;
10748 int ret;
10749
10750 if (!rdev->ops->set_qos_map)
10751 return -EOPNOTSUPP;
10752
10753 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10754 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10755 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10756
10757 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10758 len > IEEE80211_QOS_MAP_LEN_MAX)
10759 return -EINVAL;
10760
10761 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10762 if (!qos_map)
10763 return -ENOMEM;
10764
10765 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10766 if (num_des) {
10767 des_len = num_des *
10768 sizeof(struct cfg80211_dscp_exception);
10769 memcpy(qos_map->dscp_exception, pos, des_len);
10770 qos_map->num_des = num_des;
10771 for (des = 0; des < num_des; des++) {
10772 if (qos_map->dscp_exception[des].up > 7) {
10773 kfree(qos_map);
10774 return -EINVAL;
10775 }
10776 }
10777 pos += des_len;
10778 }
10779 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10780 }
10781
10782 wdev_lock(dev->ieee80211_ptr);
10783 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10784 if (!ret)
10785 ret = rdev_set_qos_map(rdev, dev, qos_map);
10786 wdev_unlock(dev->ieee80211_ptr);
10787
10788 kfree(qos_map);
10789 return ret;
10790 }
10791
10792 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10793 {
10794 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10795 struct net_device *dev = info->user_ptr[1];
10796 struct wireless_dev *wdev = dev->ieee80211_ptr;
10797 const u8 *peer;
10798 u8 tsid, up;
10799 u16 admitted_time = 0;
10800 int err;
10801
10802 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10803 return -EOPNOTSUPP;
10804
10805 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10806 !info->attrs[NL80211_ATTR_USER_PRIO])
10807 return -EINVAL;
10808
10809 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10810 if (tsid >= IEEE80211_NUM_TIDS)
10811 return -EINVAL;
10812
10813 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10814 if (up >= IEEE80211_NUM_UPS)
10815 return -EINVAL;
10816
10817 /* WMM uses TIDs 0-7 even for TSPEC */
10818 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10819 /* TODO: handle 802.11 TSPEC/admission control
10820 * need more attributes for that (e.g. BA session requirement);
10821 * change the WMM adminssion test above to allow both then
10822 */
10823 return -EINVAL;
10824 }
10825
10826 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10827
10828 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10829 admitted_time =
10830 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10831 if (!admitted_time)
10832 return -EINVAL;
10833 }
10834
10835 wdev_lock(wdev);
10836 switch (wdev->iftype) {
10837 case NL80211_IFTYPE_STATION:
10838 case NL80211_IFTYPE_P2P_CLIENT:
10839 if (wdev->current_bss)
10840 break;
10841 err = -ENOTCONN;
10842 goto out;
10843 default:
10844 err = -EOPNOTSUPP;
10845 goto out;
10846 }
10847
10848 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10849
10850 out:
10851 wdev_unlock(wdev);
10852 return err;
10853 }
10854
10855 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10856 {
10857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10858 struct net_device *dev = info->user_ptr[1];
10859 struct wireless_dev *wdev = dev->ieee80211_ptr;
10860 const u8 *peer;
10861 u8 tsid;
10862 int err;
10863
10864 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10865 return -EINVAL;
10866
10867 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10868 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10869
10870 wdev_lock(wdev);
10871 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10872 wdev_unlock(wdev);
10873
10874 return err;
10875 }
10876
10877 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10878 struct genl_info *info)
10879 {
10880 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10881 struct net_device *dev = info->user_ptr[1];
10882 struct wireless_dev *wdev = dev->ieee80211_ptr;
10883 struct cfg80211_chan_def chandef = {};
10884 const u8 *addr;
10885 u8 oper_class;
10886 int err;
10887
10888 if (!rdev->ops->tdls_channel_switch ||
10889 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10890 return -EOPNOTSUPP;
10891
10892 switch (dev->ieee80211_ptr->iftype) {
10893 case NL80211_IFTYPE_STATION:
10894 case NL80211_IFTYPE_P2P_CLIENT:
10895 break;
10896 default:
10897 return -EOPNOTSUPP;
10898 }
10899
10900 if (!info->attrs[NL80211_ATTR_MAC] ||
10901 !info->attrs[NL80211_ATTR_OPER_CLASS])
10902 return -EINVAL;
10903
10904 err = nl80211_parse_chandef(rdev, info, &chandef);
10905 if (err)
10906 return err;
10907
10908 /*
10909 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10910 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10911 * specification is not defined for them.
10912 */
10913 if (chandef.chan->band == NL80211_BAND_2GHZ &&
10914 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10915 chandef.width != NL80211_CHAN_WIDTH_20)
10916 return -EINVAL;
10917
10918 /* we will be active on the TDLS link */
10919 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10920 wdev->iftype))
10921 return -EINVAL;
10922
10923 /* don't allow switching to DFS channels */
10924 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10925 return -EINVAL;
10926
10927 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10928 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10929
10930 wdev_lock(wdev);
10931 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10932 wdev_unlock(wdev);
10933
10934 return err;
10935 }
10936
10937 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10938 struct genl_info *info)
10939 {
10940 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10941 struct net_device *dev = info->user_ptr[1];
10942 struct wireless_dev *wdev = dev->ieee80211_ptr;
10943 const u8 *addr;
10944
10945 if (!rdev->ops->tdls_channel_switch ||
10946 !rdev->ops->tdls_cancel_channel_switch ||
10947 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10948 return -EOPNOTSUPP;
10949
10950 switch (dev->ieee80211_ptr->iftype) {
10951 case NL80211_IFTYPE_STATION:
10952 case NL80211_IFTYPE_P2P_CLIENT:
10953 break;
10954 default:
10955 return -EOPNOTSUPP;
10956 }
10957
10958 if (!info->attrs[NL80211_ATTR_MAC])
10959 return -EINVAL;
10960
10961 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10962
10963 wdev_lock(wdev);
10964 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10965 wdev_unlock(wdev);
10966
10967 return 0;
10968 }
10969
10970 #define NL80211_FLAG_NEED_WIPHY 0x01
10971 #define NL80211_FLAG_NEED_NETDEV 0x02
10972 #define NL80211_FLAG_NEED_RTNL 0x04
10973 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10974 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10975 NL80211_FLAG_CHECK_NETDEV_UP)
10976 #define NL80211_FLAG_NEED_WDEV 0x10
10977 /* If a netdev is associated, it must be UP, P2P must be started */
10978 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10979 NL80211_FLAG_CHECK_NETDEV_UP)
10980 #define NL80211_FLAG_CLEAR_SKB 0x20
10981
10982 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10983 struct genl_info *info)
10984 {
10985 struct cfg80211_registered_device *rdev;
10986 struct wireless_dev *wdev;
10987 struct net_device *dev;
10988 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10989
10990 if (rtnl)
10991 rtnl_lock();
10992
10993 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10994 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10995 if (IS_ERR(rdev)) {
10996 if (rtnl)
10997 rtnl_unlock();
10998 return PTR_ERR(rdev);
10999 }
11000 info->user_ptr[0] = rdev;
11001 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11002 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11003 ASSERT_RTNL();
11004
11005 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11006 info->attrs);
11007 if (IS_ERR(wdev)) {
11008 if (rtnl)
11009 rtnl_unlock();
11010 return PTR_ERR(wdev);
11011 }
11012
11013 dev = wdev->netdev;
11014 rdev = wiphy_to_rdev(wdev->wiphy);
11015
11016 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11017 if (!dev) {
11018 if (rtnl)
11019 rtnl_unlock();
11020 return -EINVAL;
11021 }
11022
11023 info->user_ptr[1] = dev;
11024 } else {
11025 info->user_ptr[1] = wdev;
11026 }
11027
11028 if (dev) {
11029 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11030 !netif_running(dev)) {
11031 if (rtnl)
11032 rtnl_unlock();
11033 return -ENETDOWN;
11034 }
11035
11036 dev_hold(dev);
11037 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
11038 if (!wdev->p2p_started) {
11039 if (rtnl)
11040 rtnl_unlock();
11041 return -ENETDOWN;
11042 }
11043 }
11044
11045 info->user_ptr[0] = rdev;
11046 }
11047
11048 return 0;
11049 }
11050
11051 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11052 struct genl_info *info)
11053 {
11054 if (info->user_ptr[1]) {
11055 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11056 struct wireless_dev *wdev = info->user_ptr[1];
11057
11058 if (wdev->netdev)
11059 dev_put(wdev->netdev);
11060 } else {
11061 dev_put(info->user_ptr[1]);
11062 }
11063 }
11064
11065 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11066 rtnl_unlock();
11067
11068 /* If needed, clear the netlink message payload from the SKB
11069 * as it might contain key data that shouldn't stick around on
11070 * the heap after the SKB is freed. The netlink message header
11071 * is still needed for further processing, so leave it intact.
11072 */
11073 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11074 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11075
11076 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11077 }
11078 }
11079
11080 static const struct genl_ops nl80211_ops[] = {
11081 {
11082 .cmd = NL80211_CMD_GET_WIPHY,
11083 .doit = nl80211_get_wiphy,
11084 .dumpit = nl80211_dump_wiphy,
11085 .done = nl80211_dump_wiphy_done,
11086 .policy = nl80211_policy,
11087 /* can be retrieved by unprivileged users */
11088 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11089 NL80211_FLAG_NEED_RTNL,
11090 },
11091 {
11092 .cmd = NL80211_CMD_SET_WIPHY,
11093 .doit = nl80211_set_wiphy,
11094 .policy = nl80211_policy,
11095 .flags = GENL_UNS_ADMIN_PERM,
11096 .internal_flags = NL80211_FLAG_NEED_RTNL,
11097 },
11098 {
11099 .cmd = NL80211_CMD_GET_INTERFACE,
11100 .doit = nl80211_get_interface,
11101 .dumpit = nl80211_dump_interface,
11102 .policy = nl80211_policy,
11103 /* can be retrieved by unprivileged users */
11104 .internal_flags = NL80211_FLAG_NEED_WDEV |
11105 NL80211_FLAG_NEED_RTNL,
11106 },
11107 {
11108 .cmd = NL80211_CMD_SET_INTERFACE,
11109 .doit = nl80211_set_interface,
11110 .policy = nl80211_policy,
11111 .flags = GENL_UNS_ADMIN_PERM,
11112 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11113 NL80211_FLAG_NEED_RTNL,
11114 },
11115 {
11116 .cmd = NL80211_CMD_NEW_INTERFACE,
11117 .doit = nl80211_new_interface,
11118 .policy = nl80211_policy,
11119 .flags = GENL_UNS_ADMIN_PERM,
11120 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11121 NL80211_FLAG_NEED_RTNL,
11122 },
11123 {
11124 .cmd = NL80211_CMD_DEL_INTERFACE,
11125 .doit = nl80211_del_interface,
11126 .policy = nl80211_policy,
11127 .flags = GENL_UNS_ADMIN_PERM,
11128 .internal_flags = NL80211_FLAG_NEED_WDEV |
11129 NL80211_FLAG_NEED_RTNL,
11130 },
11131 {
11132 .cmd = NL80211_CMD_GET_KEY,
11133 .doit = nl80211_get_key,
11134 .policy = nl80211_policy,
11135 .flags = GENL_UNS_ADMIN_PERM,
11136 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11137 NL80211_FLAG_NEED_RTNL,
11138 },
11139 {
11140 .cmd = NL80211_CMD_SET_KEY,
11141 .doit = nl80211_set_key,
11142 .policy = nl80211_policy,
11143 .flags = GENL_UNS_ADMIN_PERM,
11144 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11145 NL80211_FLAG_NEED_RTNL |
11146 NL80211_FLAG_CLEAR_SKB,
11147 },
11148 {
11149 .cmd = NL80211_CMD_NEW_KEY,
11150 .doit = nl80211_new_key,
11151 .policy = nl80211_policy,
11152 .flags = GENL_UNS_ADMIN_PERM,
11153 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11154 NL80211_FLAG_NEED_RTNL |
11155 NL80211_FLAG_CLEAR_SKB,
11156 },
11157 {
11158 .cmd = NL80211_CMD_DEL_KEY,
11159 .doit = nl80211_del_key,
11160 .policy = nl80211_policy,
11161 .flags = GENL_UNS_ADMIN_PERM,
11162 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11163 NL80211_FLAG_NEED_RTNL,
11164 },
11165 {
11166 .cmd = NL80211_CMD_SET_BEACON,
11167 .policy = nl80211_policy,
11168 .flags = GENL_UNS_ADMIN_PERM,
11169 .doit = nl80211_set_beacon,
11170 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11171 NL80211_FLAG_NEED_RTNL,
11172 },
11173 {
11174 .cmd = NL80211_CMD_START_AP,
11175 .policy = nl80211_policy,
11176 .flags = GENL_UNS_ADMIN_PERM,
11177 .doit = nl80211_start_ap,
11178 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11179 NL80211_FLAG_NEED_RTNL,
11180 },
11181 {
11182 .cmd = NL80211_CMD_STOP_AP,
11183 .policy = nl80211_policy,
11184 .flags = GENL_UNS_ADMIN_PERM,
11185 .doit = nl80211_stop_ap,
11186 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11187 NL80211_FLAG_NEED_RTNL,
11188 },
11189 {
11190 .cmd = NL80211_CMD_GET_STATION,
11191 .doit = nl80211_get_station,
11192 .dumpit = nl80211_dump_station,
11193 .policy = nl80211_policy,
11194 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11195 NL80211_FLAG_NEED_RTNL,
11196 },
11197 {
11198 .cmd = NL80211_CMD_SET_STATION,
11199 .doit = nl80211_set_station,
11200 .policy = nl80211_policy,
11201 .flags = GENL_UNS_ADMIN_PERM,
11202 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11203 NL80211_FLAG_NEED_RTNL,
11204 },
11205 {
11206 .cmd = NL80211_CMD_NEW_STATION,
11207 .doit = nl80211_new_station,
11208 .policy = nl80211_policy,
11209 .flags = GENL_UNS_ADMIN_PERM,
11210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11211 NL80211_FLAG_NEED_RTNL,
11212 },
11213 {
11214 .cmd = NL80211_CMD_DEL_STATION,
11215 .doit = nl80211_del_station,
11216 .policy = nl80211_policy,
11217 .flags = GENL_UNS_ADMIN_PERM,
11218 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11219 NL80211_FLAG_NEED_RTNL,
11220 },
11221 {
11222 .cmd = NL80211_CMD_GET_MPATH,
11223 .doit = nl80211_get_mpath,
11224 .dumpit = nl80211_dump_mpath,
11225 .policy = nl80211_policy,
11226 .flags = GENL_UNS_ADMIN_PERM,
11227 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11228 NL80211_FLAG_NEED_RTNL,
11229 },
11230 {
11231 .cmd = NL80211_CMD_GET_MPP,
11232 .doit = nl80211_get_mpp,
11233 .dumpit = nl80211_dump_mpp,
11234 .policy = nl80211_policy,
11235 .flags = GENL_UNS_ADMIN_PERM,
11236 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11237 NL80211_FLAG_NEED_RTNL,
11238 },
11239 {
11240 .cmd = NL80211_CMD_SET_MPATH,
11241 .doit = nl80211_set_mpath,
11242 .policy = nl80211_policy,
11243 .flags = GENL_UNS_ADMIN_PERM,
11244 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11245 NL80211_FLAG_NEED_RTNL,
11246 },
11247 {
11248 .cmd = NL80211_CMD_NEW_MPATH,
11249 .doit = nl80211_new_mpath,
11250 .policy = nl80211_policy,
11251 .flags = GENL_UNS_ADMIN_PERM,
11252 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11253 NL80211_FLAG_NEED_RTNL,
11254 },
11255 {
11256 .cmd = NL80211_CMD_DEL_MPATH,
11257 .doit = nl80211_del_mpath,
11258 .policy = nl80211_policy,
11259 .flags = GENL_UNS_ADMIN_PERM,
11260 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11261 NL80211_FLAG_NEED_RTNL,
11262 },
11263 {
11264 .cmd = NL80211_CMD_SET_BSS,
11265 .doit = nl80211_set_bss,
11266 .policy = nl80211_policy,
11267 .flags = GENL_UNS_ADMIN_PERM,
11268 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11269 NL80211_FLAG_NEED_RTNL,
11270 },
11271 {
11272 .cmd = NL80211_CMD_GET_REG,
11273 .doit = nl80211_get_reg_do,
11274 .dumpit = nl80211_get_reg_dump,
11275 .policy = nl80211_policy,
11276 .internal_flags = NL80211_FLAG_NEED_RTNL,
11277 /* can be retrieved by unprivileged users */
11278 },
11279 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
11280 {
11281 .cmd = NL80211_CMD_SET_REG,
11282 .doit = nl80211_set_reg,
11283 .policy = nl80211_policy,
11284 .flags = GENL_ADMIN_PERM,
11285 .internal_flags = NL80211_FLAG_NEED_RTNL,
11286 },
11287 #endif
11288 {
11289 .cmd = NL80211_CMD_REQ_SET_REG,
11290 .doit = nl80211_req_set_reg,
11291 .policy = nl80211_policy,
11292 .flags = GENL_ADMIN_PERM,
11293 },
11294 {
11295 .cmd = NL80211_CMD_GET_MESH_CONFIG,
11296 .doit = nl80211_get_mesh_config,
11297 .policy = nl80211_policy,
11298 /* can be retrieved by unprivileged users */
11299 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11300 NL80211_FLAG_NEED_RTNL,
11301 },
11302 {
11303 .cmd = NL80211_CMD_SET_MESH_CONFIG,
11304 .doit = nl80211_update_mesh_config,
11305 .policy = nl80211_policy,
11306 .flags = GENL_UNS_ADMIN_PERM,
11307 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11308 NL80211_FLAG_NEED_RTNL,
11309 },
11310 {
11311 .cmd = NL80211_CMD_TRIGGER_SCAN,
11312 .doit = nl80211_trigger_scan,
11313 .policy = nl80211_policy,
11314 .flags = GENL_UNS_ADMIN_PERM,
11315 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11316 NL80211_FLAG_NEED_RTNL,
11317 },
11318 {
11319 .cmd = NL80211_CMD_ABORT_SCAN,
11320 .doit = nl80211_abort_scan,
11321 .policy = nl80211_policy,
11322 .flags = GENL_UNS_ADMIN_PERM,
11323 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11324 NL80211_FLAG_NEED_RTNL,
11325 },
11326 {
11327 .cmd = NL80211_CMD_GET_SCAN,
11328 .policy = nl80211_policy,
11329 .dumpit = nl80211_dump_scan,
11330 },
11331 {
11332 .cmd = NL80211_CMD_START_SCHED_SCAN,
11333 .doit = nl80211_start_sched_scan,
11334 .policy = nl80211_policy,
11335 .flags = GENL_UNS_ADMIN_PERM,
11336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11337 NL80211_FLAG_NEED_RTNL,
11338 },
11339 {
11340 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
11341 .doit = nl80211_stop_sched_scan,
11342 .policy = nl80211_policy,
11343 .flags = GENL_UNS_ADMIN_PERM,
11344 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11345 NL80211_FLAG_NEED_RTNL,
11346 },
11347 {
11348 .cmd = NL80211_CMD_AUTHENTICATE,
11349 .doit = nl80211_authenticate,
11350 .policy = nl80211_policy,
11351 .flags = GENL_UNS_ADMIN_PERM,
11352 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11353 NL80211_FLAG_NEED_RTNL |
11354 NL80211_FLAG_CLEAR_SKB,
11355 },
11356 {
11357 .cmd = NL80211_CMD_ASSOCIATE,
11358 .doit = nl80211_associate,
11359 .policy = nl80211_policy,
11360 .flags = GENL_UNS_ADMIN_PERM,
11361 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11362 NL80211_FLAG_NEED_RTNL,
11363 },
11364 {
11365 .cmd = NL80211_CMD_DEAUTHENTICATE,
11366 .doit = nl80211_deauthenticate,
11367 .policy = nl80211_policy,
11368 .flags = GENL_UNS_ADMIN_PERM,
11369 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11370 NL80211_FLAG_NEED_RTNL,
11371 },
11372 {
11373 .cmd = NL80211_CMD_DISASSOCIATE,
11374 .doit = nl80211_disassociate,
11375 .policy = nl80211_policy,
11376 .flags = GENL_UNS_ADMIN_PERM,
11377 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11378 NL80211_FLAG_NEED_RTNL,
11379 },
11380 {
11381 .cmd = NL80211_CMD_JOIN_IBSS,
11382 .doit = nl80211_join_ibss,
11383 .policy = nl80211_policy,
11384 .flags = GENL_UNS_ADMIN_PERM,
11385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11386 NL80211_FLAG_NEED_RTNL,
11387 },
11388 {
11389 .cmd = NL80211_CMD_LEAVE_IBSS,
11390 .doit = nl80211_leave_ibss,
11391 .policy = nl80211_policy,
11392 .flags = GENL_UNS_ADMIN_PERM,
11393 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11394 NL80211_FLAG_NEED_RTNL,
11395 },
11396 #ifdef CONFIG_NL80211_TESTMODE
11397 {
11398 .cmd = NL80211_CMD_TESTMODE,
11399 .doit = nl80211_testmode_do,
11400 .dumpit = nl80211_testmode_dump,
11401 .policy = nl80211_policy,
11402 .flags = GENL_UNS_ADMIN_PERM,
11403 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11404 NL80211_FLAG_NEED_RTNL,
11405 },
11406 #endif
11407 {
11408 .cmd = NL80211_CMD_CONNECT,
11409 .doit = nl80211_connect,
11410 .policy = nl80211_policy,
11411 .flags = GENL_UNS_ADMIN_PERM,
11412 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11413 NL80211_FLAG_NEED_RTNL,
11414 },
11415 {
11416 .cmd = NL80211_CMD_DISCONNECT,
11417 .doit = nl80211_disconnect,
11418 .policy = nl80211_policy,
11419 .flags = GENL_UNS_ADMIN_PERM,
11420 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11421 NL80211_FLAG_NEED_RTNL,
11422 },
11423 {
11424 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11425 .doit = nl80211_wiphy_netns,
11426 .policy = nl80211_policy,
11427 .flags = GENL_UNS_ADMIN_PERM,
11428 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11429 NL80211_FLAG_NEED_RTNL,
11430 },
11431 {
11432 .cmd = NL80211_CMD_GET_SURVEY,
11433 .policy = nl80211_policy,
11434 .dumpit = nl80211_dump_survey,
11435 },
11436 {
11437 .cmd = NL80211_CMD_SET_PMKSA,
11438 .doit = nl80211_setdel_pmksa,
11439 .policy = nl80211_policy,
11440 .flags = GENL_UNS_ADMIN_PERM,
11441 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11442 NL80211_FLAG_NEED_RTNL,
11443 },
11444 {
11445 .cmd = NL80211_CMD_DEL_PMKSA,
11446 .doit = nl80211_setdel_pmksa,
11447 .policy = nl80211_policy,
11448 .flags = GENL_UNS_ADMIN_PERM,
11449 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11450 NL80211_FLAG_NEED_RTNL,
11451 },
11452 {
11453 .cmd = NL80211_CMD_FLUSH_PMKSA,
11454 .doit = nl80211_flush_pmksa,
11455 .policy = nl80211_policy,
11456 .flags = GENL_UNS_ADMIN_PERM,
11457 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11458 NL80211_FLAG_NEED_RTNL,
11459 },
11460 {
11461 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11462 .doit = nl80211_remain_on_channel,
11463 .policy = nl80211_policy,
11464 .flags = GENL_UNS_ADMIN_PERM,
11465 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11466 NL80211_FLAG_NEED_RTNL,
11467 },
11468 {
11469 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11470 .doit = nl80211_cancel_remain_on_channel,
11471 .policy = nl80211_policy,
11472 .flags = GENL_UNS_ADMIN_PERM,
11473 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11474 NL80211_FLAG_NEED_RTNL,
11475 },
11476 {
11477 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11478 .doit = nl80211_set_tx_bitrate_mask,
11479 .policy = nl80211_policy,
11480 .flags = GENL_UNS_ADMIN_PERM,
11481 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11482 NL80211_FLAG_NEED_RTNL,
11483 },
11484 {
11485 .cmd = NL80211_CMD_REGISTER_FRAME,
11486 .doit = nl80211_register_mgmt,
11487 .policy = nl80211_policy,
11488 .flags = GENL_UNS_ADMIN_PERM,
11489 .internal_flags = NL80211_FLAG_NEED_WDEV |
11490 NL80211_FLAG_NEED_RTNL,
11491 },
11492 {
11493 .cmd = NL80211_CMD_FRAME,
11494 .doit = nl80211_tx_mgmt,
11495 .policy = nl80211_policy,
11496 .flags = GENL_UNS_ADMIN_PERM,
11497 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11498 NL80211_FLAG_NEED_RTNL,
11499 },
11500 {
11501 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11502 .doit = nl80211_tx_mgmt_cancel_wait,
11503 .policy = nl80211_policy,
11504 .flags = GENL_UNS_ADMIN_PERM,
11505 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11506 NL80211_FLAG_NEED_RTNL,
11507 },
11508 {
11509 .cmd = NL80211_CMD_SET_POWER_SAVE,
11510 .doit = nl80211_set_power_save,
11511 .policy = nl80211_policy,
11512 .flags = GENL_UNS_ADMIN_PERM,
11513 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11514 NL80211_FLAG_NEED_RTNL,
11515 },
11516 {
11517 .cmd = NL80211_CMD_GET_POWER_SAVE,
11518 .doit = nl80211_get_power_save,
11519 .policy = nl80211_policy,
11520 /* can be retrieved by unprivileged users */
11521 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11522 NL80211_FLAG_NEED_RTNL,
11523 },
11524 {
11525 .cmd = NL80211_CMD_SET_CQM,
11526 .doit = nl80211_set_cqm,
11527 .policy = nl80211_policy,
11528 .flags = GENL_UNS_ADMIN_PERM,
11529 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11530 NL80211_FLAG_NEED_RTNL,
11531 },
11532 {
11533 .cmd = NL80211_CMD_SET_CHANNEL,
11534 .doit = nl80211_set_channel,
11535 .policy = nl80211_policy,
11536 .flags = GENL_UNS_ADMIN_PERM,
11537 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11538 NL80211_FLAG_NEED_RTNL,
11539 },
11540 {
11541 .cmd = NL80211_CMD_SET_WDS_PEER,
11542 .doit = nl80211_set_wds_peer,
11543 .policy = nl80211_policy,
11544 .flags = GENL_UNS_ADMIN_PERM,
11545 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11546 NL80211_FLAG_NEED_RTNL,
11547 },
11548 {
11549 .cmd = NL80211_CMD_JOIN_MESH,
11550 .doit = nl80211_join_mesh,
11551 .policy = nl80211_policy,
11552 .flags = GENL_UNS_ADMIN_PERM,
11553 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11554 NL80211_FLAG_NEED_RTNL,
11555 },
11556 {
11557 .cmd = NL80211_CMD_LEAVE_MESH,
11558 .doit = nl80211_leave_mesh,
11559 .policy = nl80211_policy,
11560 .flags = GENL_UNS_ADMIN_PERM,
11561 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11562 NL80211_FLAG_NEED_RTNL,
11563 },
11564 {
11565 .cmd = NL80211_CMD_JOIN_OCB,
11566 .doit = nl80211_join_ocb,
11567 .policy = nl80211_policy,
11568 .flags = GENL_UNS_ADMIN_PERM,
11569 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11570 NL80211_FLAG_NEED_RTNL,
11571 },
11572 {
11573 .cmd = NL80211_CMD_LEAVE_OCB,
11574 .doit = nl80211_leave_ocb,
11575 .policy = nl80211_policy,
11576 .flags = GENL_UNS_ADMIN_PERM,
11577 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11578 NL80211_FLAG_NEED_RTNL,
11579 },
11580 #ifdef CONFIG_PM
11581 {
11582 .cmd = NL80211_CMD_GET_WOWLAN,
11583 .doit = nl80211_get_wowlan,
11584 .policy = nl80211_policy,
11585 /* can be retrieved by unprivileged users */
11586 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11587 NL80211_FLAG_NEED_RTNL,
11588 },
11589 {
11590 .cmd = NL80211_CMD_SET_WOWLAN,
11591 .doit = nl80211_set_wowlan,
11592 .policy = nl80211_policy,
11593 .flags = GENL_UNS_ADMIN_PERM,
11594 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11595 NL80211_FLAG_NEED_RTNL,
11596 },
11597 #endif
11598 {
11599 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11600 .doit = nl80211_set_rekey_data,
11601 .policy = nl80211_policy,
11602 .flags = GENL_UNS_ADMIN_PERM,
11603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11604 NL80211_FLAG_NEED_RTNL |
11605 NL80211_FLAG_CLEAR_SKB,
11606 },
11607 {
11608 .cmd = NL80211_CMD_TDLS_MGMT,
11609 .doit = nl80211_tdls_mgmt,
11610 .policy = nl80211_policy,
11611 .flags = GENL_UNS_ADMIN_PERM,
11612 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11613 NL80211_FLAG_NEED_RTNL,
11614 },
11615 {
11616 .cmd = NL80211_CMD_TDLS_OPER,
11617 .doit = nl80211_tdls_oper,
11618 .policy = nl80211_policy,
11619 .flags = GENL_UNS_ADMIN_PERM,
11620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11621 NL80211_FLAG_NEED_RTNL,
11622 },
11623 {
11624 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11625 .doit = nl80211_register_unexpected_frame,
11626 .policy = nl80211_policy,
11627 .flags = GENL_UNS_ADMIN_PERM,
11628 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11629 NL80211_FLAG_NEED_RTNL,
11630 },
11631 {
11632 .cmd = NL80211_CMD_PROBE_CLIENT,
11633 .doit = nl80211_probe_client,
11634 .policy = nl80211_policy,
11635 .flags = GENL_UNS_ADMIN_PERM,
11636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11637 NL80211_FLAG_NEED_RTNL,
11638 },
11639 {
11640 .cmd = NL80211_CMD_REGISTER_BEACONS,
11641 .doit = nl80211_register_beacons,
11642 .policy = nl80211_policy,
11643 .flags = GENL_UNS_ADMIN_PERM,
11644 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11645 NL80211_FLAG_NEED_RTNL,
11646 },
11647 {
11648 .cmd = NL80211_CMD_SET_NOACK_MAP,
11649 .doit = nl80211_set_noack_map,
11650 .policy = nl80211_policy,
11651 .flags = GENL_UNS_ADMIN_PERM,
11652 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11653 NL80211_FLAG_NEED_RTNL,
11654 },
11655 {
11656 .cmd = NL80211_CMD_START_P2P_DEVICE,
11657 .doit = nl80211_start_p2p_device,
11658 .policy = nl80211_policy,
11659 .flags = GENL_UNS_ADMIN_PERM,
11660 .internal_flags = NL80211_FLAG_NEED_WDEV |
11661 NL80211_FLAG_NEED_RTNL,
11662 },
11663 {
11664 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11665 .doit = nl80211_stop_p2p_device,
11666 .policy = nl80211_policy,
11667 .flags = GENL_UNS_ADMIN_PERM,
11668 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11669 NL80211_FLAG_NEED_RTNL,
11670 },
11671 {
11672 .cmd = NL80211_CMD_SET_MCAST_RATE,
11673 .doit = nl80211_set_mcast_rate,
11674 .policy = nl80211_policy,
11675 .flags = GENL_UNS_ADMIN_PERM,
11676 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11677 NL80211_FLAG_NEED_RTNL,
11678 },
11679 {
11680 .cmd = NL80211_CMD_SET_MAC_ACL,
11681 .doit = nl80211_set_mac_acl,
11682 .policy = nl80211_policy,
11683 .flags = GENL_UNS_ADMIN_PERM,
11684 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11685 NL80211_FLAG_NEED_RTNL,
11686 },
11687 {
11688 .cmd = NL80211_CMD_RADAR_DETECT,
11689 .doit = nl80211_start_radar_detection,
11690 .policy = nl80211_policy,
11691 .flags = GENL_UNS_ADMIN_PERM,
11692 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11693 NL80211_FLAG_NEED_RTNL,
11694 },
11695 {
11696 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11697 .doit = nl80211_get_protocol_features,
11698 .policy = nl80211_policy,
11699 },
11700 {
11701 .cmd = NL80211_CMD_UPDATE_FT_IES,
11702 .doit = nl80211_update_ft_ies,
11703 .policy = nl80211_policy,
11704 .flags = GENL_UNS_ADMIN_PERM,
11705 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11706 NL80211_FLAG_NEED_RTNL,
11707 },
11708 {
11709 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11710 .doit = nl80211_crit_protocol_start,
11711 .policy = nl80211_policy,
11712 .flags = GENL_UNS_ADMIN_PERM,
11713 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11714 NL80211_FLAG_NEED_RTNL,
11715 },
11716 {
11717 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11718 .doit = nl80211_crit_protocol_stop,
11719 .policy = nl80211_policy,
11720 .flags = GENL_UNS_ADMIN_PERM,
11721 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11722 NL80211_FLAG_NEED_RTNL,
11723 },
11724 {
11725 .cmd = NL80211_CMD_GET_COALESCE,
11726 .doit = nl80211_get_coalesce,
11727 .policy = nl80211_policy,
11728 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11729 NL80211_FLAG_NEED_RTNL,
11730 },
11731 {
11732 .cmd = NL80211_CMD_SET_COALESCE,
11733 .doit = nl80211_set_coalesce,
11734 .policy = nl80211_policy,
11735 .flags = GENL_UNS_ADMIN_PERM,
11736 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11737 NL80211_FLAG_NEED_RTNL,
11738 },
11739 {
11740 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11741 .doit = nl80211_channel_switch,
11742 .policy = nl80211_policy,
11743 .flags = GENL_UNS_ADMIN_PERM,
11744 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11745 NL80211_FLAG_NEED_RTNL,
11746 },
11747 {
11748 .cmd = NL80211_CMD_VENDOR,
11749 .doit = nl80211_vendor_cmd,
11750 .dumpit = nl80211_vendor_cmd_dump,
11751 .policy = nl80211_policy,
11752 .flags = GENL_UNS_ADMIN_PERM,
11753 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11754 NL80211_FLAG_NEED_RTNL,
11755 },
11756 {
11757 .cmd = NL80211_CMD_SET_QOS_MAP,
11758 .doit = nl80211_set_qos_map,
11759 .policy = nl80211_policy,
11760 .flags = GENL_UNS_ADMIN_PERM,
11761 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11762 NL80211_FLAG_NEED_RTNL,
11763 },
11764 {
11765 .cmd = NL80211_CMD_ADD_TX_TS,
11766 .doit = nl80211_add_tx_ts,
11767 .policy = nl80211_policy,
11768 .flags = GENL_UNS_ADMIN_PERM,
11769 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11770 NL80211_FLAG_NEED_RTNL,
11771 },
11772 {
11773 .cmd = NL80211_CMD_DEL_TX_TS,
11774 .doit = nl80211_del_tx_ts,
11775 .policy = nl80211_policy,
11776 .flags = GENL_UNS_ADMIN_PERM,
11777 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11778 NL80211_FLAG_NEED_RTNL,
11779 },
11780 {
11781 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11782 .doit = nl80211_tdls_channel_switch,
11783 .policy = nl80211_policy,
11784 .flags = GENL_UNS_ADMIN_PERM,
11785 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11786 NL80211_FLAG_NEED_RTNL,
11787 },
11788 {
11789 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11790 .doit = nl80211_tdls_cancel_channel_switch,
11791 .policy = nl80211_policy,
11792 .flags = GENL_UNS_ADMIN_PERM,
11793 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11794 NL80211_FLAG_NEED_RTNL,
11795 },
11796 };
11797
11798 /* notification functions */
11799
11800 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11801 enum nl80211_commands cmd)
11802 {
11803 struct sk_buff *msg;
11804 struct nl80211_dump_wiphy_state state = {};
11805
11806 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11807 cmd != NL80211_CMD_DEL_WIPHY);
11808
11809 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11810 if (!msg)
11811 return;
11812
11813 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11814 nlmsg_free(msg);
11815 return;
11816 }
11817
11818 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11819 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11820 }
11821
11822 static int nl80211_add_scan_req(struct sk_buff *msg,
11823 struct cfg80211_registered_device *rdev)
11824 {
11825 struct cfg80211_scan_request *req = rdev->scan_req;
11826 struct nlattr *nest;
11827 int i;
11828
11829 if (WARN_ON(!req))
11830 return 0;
11831
11832 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11833 if (!nest)
11834 goto nla_put_failure;
11835 for (i = 0; i < req->n_ssids; i++) {
11836 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11837 goto nla_put_failure;
11838 }
11839 nla_nest_end(msg, nest);
11840
11841 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11842 if (!nest)
11843 goto nla_put_failure;
11844 for (i = 0; i < req->n_channels; i++) {
11845 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11846 goto nla_put_failure;
11847 }
11848 nla_nest_end(msg, nest);
11849
11850 if (req->ie &&
11851 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11852 goto nla_put_failure;
11853
11854 if (req->flags &&
11855 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11856 goto nla_put_failure;
11857
11858 if (req->info.scan_start_tsf &&
11859 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
11860 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
11861 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
11862 req->info.tsf_bssid)))
11863 goto nla_put_failure;
11864
11865 return 0;
11866 nla_put_failure:
11867 return -ENOBUFS;
11868 }
11869
11870 static int nl80211_send_scan_msg(struct sk_buff *msg,
11871 struct cfg80211_registered_device *rdev,
11872 struct wireless_dev *wdev,
11873 u32 portid, u32 seq, int flags,
11874 u32 cmd)
11875 {
11876 void *hdr;
11877
11878 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11879 if (!hdr)
11880 return -1;
11881
11882 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11883 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11884 wdev->netdev->ifindex)) ||
11885 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11886 NL80211_ATTR_PAD))
11887 goto nla_put_failure;
11888
11889 /* ignore errors and send incomplete event anyway */
11890 nl80211_add_scan_req(msg, rdev);
11891
11892 genlmsg_end(msg, hdr);
11893 return 0;
11894
11895 nla_put_failure:
11896 genlmsg_cancel(msg, hdr);
11897 return -EMSGSIZE;
11898 }
11899
11900 static int
11901 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11902 struct cfg80211_registered_device *rdev,
11903 struct net_device *netdev,
11904 u32 portid, u32 seq, int flags, u32 cmd)
11905 {
11906 void *hdr;
11907
11908 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11909 if (!hdr)
11910 return -1;
11911
11912 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11913 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11914 goto nla_put_failure;
11915
11916 genlmsg_end(msg, hdr);
11917 return 0;
11918
11919 nla_put_failure:
11920 genlmsg_cancel(msg, hdr);
11921 return -EMSGSIZE;
11922 }
11923
11924 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11925 struct wireless_dev *wdev)
11926 {
11927 struct sk_buff *msg;
11928
11929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11930 if (!msg)
11931 return;
11932
11933 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11934 NL80211_CMD_TRIGGER_SCAN) < 0) {
11935 nlmsg_free(msg);
11936 return;
11937 }
11938
11939 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11940 NL80211_MCGRP_SCAN, GFP_KERNEL);
11941 }
11942
11943 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11944 struct wireless_dev *wdev, bool aborted)
11945 {
11946 struct sk_buff *msg;
11947
11948 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11949 if (!msg)
11950 return NULL;
11951
11952 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11953 aborted ? NL80211_CMD_SCAN_ABORTED :
11954 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11955 nlmsg_free(msg);
11956 return NULL;
11957 }
11958
11959 return msg;
11960 }
11961
11962 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11963 struct sk_buff *msg)
11964 {
11965 if (!msg)
11966 return;
11967
11968 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11969 NL80211_MCGRP_SCAN, GFP_KERNEL);
11970 }
11971
11972 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11973 struct net_device *netdev)
11974 {
11975 struct sk_buff *msg;
11976
11977 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11978 if (!msg)
11979 return;
11980
11981 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11982 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11983 nlmsg_free(msg);
11984 return;
11985 }
11986
11987 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11988 NL80211_MCGRP_SCAN, GFP_KERNEL);
11989 }
11990
11991 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11992 struct net_device *netdev, u32 cmd)
11993 {
11994 struct sk_buff *msg;
11995
11996 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11997 if (!msg)
11998 return;
11999
12000 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12001 nlmsg_free(msg);
12002 return;
12003 }
12004
12005 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12006 NL80211_MCGRP_SCAN, GFP_KERNEL);
12007 }
12008
12009 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12010 struct regulatory_request *request)
12011 {
12012 /* Userspace can always count this one always being set */
12013 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12014 goto nla_put_failure;
12015
12016 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12017 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12018 NL80211_REGDOM_TYPE_WORLD))
12019 goto nla_put_failure;
12020 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12021 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12022 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12023 goto nla_put_failure;
12024 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12025 request->intersect) {
12026 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12027 NL80211_REGDOM_TYPE_INTERSECTION))
12028 goto nla_put_failure;
12029 } else {
12030 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12031 NL80211_REGDOM_TYPE_COUNTRY) ||
12032 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12033 request->alpha2))
12034 goto nla_put_failure;
12035 }
12036
12037 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12038 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12039
12040 if (wiphy &&
12041 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12042 goto nla_put_failure;
12043
12044 if (wiphy &&
12045 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12046 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12047 goto nla_put_failure;
12048 }
12049
12050 return true;
12051
12052 nla_put_failure:
12053 return false;
12054 }
12055
12056 /*
12057 * This can happen on global regulatory changes or device specific settings
12058 * based on custom regulatory domains.
12059 */
12060 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
12061 struct regulatory_request *request)
12062 {
12063 struct sk_buff *msg;
12064 void *hdr;
12065
12066 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12067 if (!msg)
12068 return;
12069
12070 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
12071 if (!hdr) {
12072 nlmsg_free(msg);
12073 return;
12074 }
12075
12076 if (nl80211_reg_change_event_fill(msg, request) == false)
12077 goto nla_put_failure;
12078
12079 genlmsg_end(msg, hdr);
12080
12081 rcu_read_lock();
12082 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12083 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12084 rcu_read_unlock();
12085
12086 return;
12087
12088 nla_put_failure:
12089 genlmsg_cancel(msg, hdr);
12090 nlmsg_free(msg);
12091 }
12092
12093 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
12094 struct net_device *netdev,
12095 const u8 *buf, size_t len,
12096 enum nl80211_commands cmd, gfp_t gfp,
12097 int uapsd_queues)
12098 {
12099 struct sk_buff *msg;
12100 void *hdr;
12101
12102 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12103 if (!msg)
12104 return;
12105
12106 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12107 if (!hdr) {
12108 nlmsg_free(msg);
12109 return;
12110 }
12111
12112 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12113 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12114 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
12115 goto nla_put_failure;
12116
12117 if (uapsd_queues >= 0) {
12118 struct nlattr *nla_wmm =
12119 nla_nest_start(msg, NL80211_ATTR_STA_WME);
12120 if (!nla_wmm)
12121 goto nla_put_failure;
12122
12123 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
12124 uapsd_queues))
12125 goto nla_put_failure;
12126
12127 nla_nest_end(msg, nla_wmm);
12128 }
12129
12130 genlmsg_end(msg, hdr);
12131
12132 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12133 NL80211_MCGRP_MLME, gfp);
12134 return;
12135
12136 nla_put_failure:
12137 genlmsg_cancel(msg, hdr);
12138 nlmsg_free(msg);
12139 }
12140
12141 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
12142 struct net_device *netdev, const u8 *buf,
12143 size_t len, gfp_t gfp)
12144 {
12145 nl80211_send_mlme_event(rdev, netdev, buf, len,
12146 NL80211_CMD_AUTHENTICATE, gfp, -1);
12147 }
12148
12149 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
12150 struct net_device *netdev, const u8 *buf,
12151 size_t len, gfp_t gfp, int uapsd_queues)
12152 {
12153 nl80211_send_mlme_event(rdev, netdev, buf, len,
12154 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
12155 }
12156
12157 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
12158 struct net_device *netdev, const u8 *buf,
12159 size_t len, gfp_t gfp)
12160 {
12161 nl80211_send_mlme_event(rdev, netdev, buf, len,
12162 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
12163 }
12164
12165 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
12166 struct net_device *netdev, const u8 *buf,
12167 size_t len, gfp_t gfp)
12168 {
12169 nl80211_send_mlme_event(rdev, netdev, buf, len,
12170 NL80211_CMD_DISASSOCIATE, gfp, -1);
12171 }
12172
12173 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
12174 size_t len)
12175 {
12176 struct wireless_dev *wdev = dev->ieee80211_ptr;
12177 struct wiphy *wiphy = wdev->wiphy;
12178 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12179 const struct ieee80211_mgmt *mgmt = (void *)buf;
12180 u32 cmd;
12181
12182 if (WARN_ON(len < 2))
12183 return;
12184
12185 if (ieee80211_is_deauth(mgmt->frame_control))
12186 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
12187 else
12188 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
12189
12190 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
12191 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
12192 }
12193 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
12194
12195 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
12196 struct net_device *netdev, int cmd,
12197 const u8 *addr, gfp_t gfp)
12198 {
12199 struct sk_buff *msg;
12200 void *hdr;
12201
12202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12203 if (!msg)
12204 return;
12205
12206 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12207 if (!hdr) {
12208 nlmsg_free(msg);
12209 return;
12210 }
12211
12212 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12213 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12214 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
12215 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12216 goto nla_put_failure;
12217
12218 genlmsg_end(msg, hdr);
12219
12220 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12221 NL80211_MCGRP_MLME, gfp);
12222 return;
12223
12224 nla_put_failure:
12225 genlmsg_cancel(msg, hdr);
12226 nlmsg_free(msg);
12227 }
12228
12229 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
12230 struct net_device *netdev, const u8 *addr,
12231 gfp_t gfp)
12232 {
12233 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
12234 addr, gfp);
12235 }
12236
12237 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
12238 struct net_device *netdev, const u8 *addr,
12239 gfp_t gfp)
12240 {
12241 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
12242 addr, gfp);
12243 }
12244
12245 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
12246 struct net_device *netdev, const u8 *bssid,
12247 const u8 *req_ie, size_t req_ie_len,
12248 const u8 *resp_ie, size_t resp_ie_len,
12249 int status, gfp_t gfp)
12250 {
12251 struct sk_buff *msg;
12252 void *hdr;
12253
12254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12255 if (!msg)
12256 return;
12257
12258 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
12259 if (!hdr) {
12260 nlmsg_free(msg);
12261 return;
12262 }
12263
12264 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12265 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12266 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
12267 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
12268 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
12269 status) ||
12270 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
12271 (req_ie &&
12272 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12273 (resp_ie &&
12274 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12275 goto nla_put_failure;
12276
12277 genlmsg_end(msg, hdr);
12278
12279 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12280 NL80211_MCGRP_MLME, gfp);
12281 return;
12282
12283 nla_put_failure:
12284 genlmsg_cancel(msg, hdr);
12285 nlmsg_free(msg);
12286 }
12287
12288 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
12289 struct net_device *netdev, const u8 *bssid,
12290 const u8 *req_ie, size_t req_ie_len,
12291 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
12292 {
12293 struct sk_buff *msg;
12294 void *hdr;
12295
12296 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12297 if (!msg)
12298 return;
12299
12300 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
12301 if (!hdr) {
12302 nlmsg_free(msg);
12303 return;
12304 }
12305
12306 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12307 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12308 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
12309 (req_ie &&
12310 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12311 (resp_ie &&
12312 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12313 goto nla_put_failure;
12314
12315 genlmsg_end(msg, hdr);
12316
12317 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12318 NL80211_MCGRP_MLME, gfp);
12319 return;
12320
12321 nla_put_failure:
12322 genlmsg_cancel(msg, hdr);
12323 nlmsg_free(msg);
12324 }
12325
12326 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
12327 struct net_device *netdev, u16 reason,
12328 const u8 *ie, size_t ie_len, bool from_ap)
12329 {
12330 struct sk_buff *msg;
12331 void *hdr;
12332
12333 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12334 if (!msg)
12335 return;
12336
12337 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
12338 if (!hdr) {
12339 nlmsg_free(msg);
12340 return;
12341 }
12342
12343 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12344 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12345 (from_ap && reason &&
12346 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
12347 (from_ap &&
12348 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
12349 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
12350 goto nla_put_failure;
12351
12352 genlmsg_end(msg, hdr);
12353
12354 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12355 NL80211_MCGRP_MLME, GFP_KERNEL);
12356 return;
12357
12358 nla_put_failure:
12359 genlmsg_cancel(msg, hdr);
12360 nlmsg_free(msg);
12361 }
12362
12363 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
12364 struct net_device *netdev, const u8 *bssid,
12365 gfp_t gfp)
12366 {
12367 struct sk_buff *msg;
12368 void *hdr;
12369
12370 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12371 if (!msg)
12372 return;
12373
12374 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
12375 if (!hdr) {
12376 nlmsg_free(msg);
12377 return;
12378 }
12379
12380 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12381 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12382 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12383 goto nla_put_failure;
12384
12385 genlmsg_end(msg, hdr);
12386
12387 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12388 NL80211_MCGRP_MLME, gfp);
12389 return;
12390
12391 nla_put_failure:
12392 genlmsg_cancel(msg, hdr);
12393 nlmsg_free(msg);
12394 }
12395
12396 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12397 const u8* ie, u8 ie_len, gfp_t gfp)
12398 {
12399 struct wireless_dev *wdev = dev->ieee80211_ptr;
12400 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12401 struct sk_buff *msg;
12402 void *hdr;
12403
12404 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12405 return;
12406
12407 trace_cfg80211_notify_new_peer_candidate(dev, addr);
12408
12409 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12410 if (!msg)
12411 return;
12412
12413 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12414 if (!hdr) {
12415 nlmsg_free(msg);
12416 return;
12417 }
12418
12419 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12420 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12421 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12422 (ie_len && ie &&
12423 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12424 goto nla_put_failure;
12425
12426 genlmsg_end(msg, hdr);
12427
12428 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12429 NL80211_MCGRP_MLME, gfp);
12430 return;
12431
12432 nla_put_failure:
12433 genlmsg_cancel(msg, hdr);
12434 nlmsg_free(msg);
12435 }
12436 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12437
12438 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12439 struct net_device *netdev, const u8 *addr,
12440 enum nl80211_key_type key_type, int key_id,
12441 const u8 *tsc, gfp_t gfp)
12442 {
12443 struct sk_buff *msg;
12444 void *hdr;
12445
12446 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12447 if (!msg)
12448 return;
12449
12450 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12451 if (!hdr) {
12452 nlmsg_free(msg);
12453 return;
12454 }
12455
12456 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12457 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12458 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12459 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12460 (key_id != -1 &&
12461 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12462 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
12463 goto nla_put_failure;
12464
12465 genlmsg_end(msg, hdr);
12466
12467 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12468 NL80211_MCGRP_MLME, gfp);
12469 return;
12470
12471 nla_put_failure:
12472 genlmsg_cancel(msg, hdr);
12473 nlmsg_free(msg);
12474 }
12475
12476 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12477 struct ieee80211_channel *channel_before,
12478 struct ieee80211_channel *channel_after)
12479 {
12480 struct sk_buff *msg;
12481 void *hdr;
12482 struct nlattr *nl_freq;
12483
12484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12485 if (!msg)
12486 return;
12487
12488 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12489 if (!hdr) {
12490 nlmsg_free(msg);
12491 return;
12492 }
12493
12494 /*
12495 * Since we are applying the beacon hint to a wiphy we know its
12496 * wiphy_idx is valid
12497 */
12498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12499 goto nla_put_failure;
12500
12501 /* Before */
12502 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12503 if (!nl_freq)
12504 goto nla_put_failure;
12505 if (nl80211_msg_put_channel(msg, channel_before, false))
12506 goto nla_put_failure;
12507 nla_nest_end(msg, nl_freq);
12508
12509 /* After */
12510 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12511 if (!nl_freq)
12512 goto nla_put_failure;
12513 if (nl80211_msg_put_channel(msg, channel_after, false))
12514 goto nla_put_failure;
12515 nla_nest_end(msg, nl_freq);
12516
12517 genlmsg_end(msg, hdr);
12518
12519 rcu_read_lock();
12520 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12521 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12522 rcu_read_unlock();
12523
12524 return;
12525
12526 nla_put_failure:
12527 genlmsg_cancel(msg, hdr);
12528 nlmsg_free(msg);
12529 }
12530
12531 static void nl80211_send_remain_on_chan_event(
12532 int cmd, struct cfg80211_registered_device *rdev,
12533 struct wireless_dev *wdev, u64 cookie,
12534 struct ieee80211_channel *chan,
12535 unsigned int duration, gfp_t gfp)
12536 {
12537 struct sk_buff *msg;
12538 void *hdr;
12539
12540 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12541 if (!msg)
12542 return;
12543
12544 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12545 if (!hdr) {
12546 nlmsg_free(msg);
12547 return;
12548 }
12549
12550 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12551 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12552 wdev->netdev->ifindex)) ||
12553 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12554 NL80211_ATTR_PAD) ||
12555 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12556 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12557 NL80211_CHAN_NO_HT) ||
12558 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12559 NL80211_ATTR_PAD))
12560 goto nla_put_failure;
12561
12562 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12563 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12564 goto nla_put_failure;
12565
12566 genlmsg_end(msg, hdr);
12567
12568 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12569 NL80211_MCGRP_MLME, gfp);
12570 return;
12571
12572 nla_put_failure:
12573 genlmsg_cancel(msg, hdr);
12574 nlmsg_free(msg);
12575 }
12576
12577 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12578 struct ieee80211_channel *chan,
12579 unsigned int duration, gfp_t gfp)
12580 {
12581 struct wiphy *wiphy = wdev->wiphy;
12582 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12583
12584 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12585 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12586 rdev, wdev, cookie, chan,
12587 duration, gfp);
12588 }
12589 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12590
12591 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12592 struct ieee80211_channel *chan,
12593 gfp_t gfp)
12594 {
12595 struct wiphy *wiphy = wdev->wiphy;
12596 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12597
12598 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12599 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12600 rdev, wdev, cookie, chan, 0, gfp);
12601 }
12602 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12603
12604 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12605 struct station_info *sinfo, gfp_t gfp)
12606 {
12607 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12608 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12609 struct sk_buff *msg;
12610
12611 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12612
12613 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12614 if (!msg)
12615 return;
12616
12617 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12618 rdev, dev, mac_addr, sinfo) < 0) {
12619 nlmsg_free(msg);
12620 return;
12621 }
12622
12623 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12624 NL80211_MCGRP_MLME, gfp);
12625 }
12626 EXPORT_SYMBOL(cfg80211_new_sta);
12627
12628 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12629 struct station_info *sinfo, gfp_t gfp)
12630 {
12631 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12632 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12633 struct sk_buff *msg;
12634 struct station_info empty_sinfo = {};
12635
12636 if (!sinfo)
12637 sinfo = &empty_sinfo;
12638
12639 trace_cfg80211_del_sta(dev, mac_addr);
12640
12641 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12642 if (!msg)
12643 return;
12644
12645 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12646 rdev, dev, mac_addr, sinfo) < 0) {
12647 nlmsg_free(msg);
12648 return;
12649 }
12650
12651 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12652 NL80211_MCGRP_MLME, gfp);
12653 }
12654 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12655
12656 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12657 enum nl80211_connect_failed_reason reason,
12658 gfp_t gfp)
12659 {
12660 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12661 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12662 struct sk_buff *msg;
12663 void *hdr;
12664
12665 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12666 if (!msg)
12667 return;
12668
12669 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12670 if (!hdr) {
12671 nlmsg_free(msg);
12672 return;
12673 }
12674
12675 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12676 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12677 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12678 goto nla_put_failure;
12679
12680 genlmsg_end(msg, hdr);
12681
12682 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12683 NL80211_MCGRP_MLME, gfp);
12684 return;
12685
12686 nla_put_failure:
12687 genlmsg_cancel(msg, hdr);
12688 nlmsg_free(msg);
12689 }
12690 EXPORT_SYMBOL(cfg80211_conn_failed);
12691
12692 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12693 const u8 *addr, gfp_t gfp)
12694 {
12695 struct wireless_dev *wdev = dev->ieee80211_ptr;
12696 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12697 struct sk_buff *msg;
12698 void *hdr;
12699 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12700
12701 if (!nlportid)
12702 return false;
12703
12704 msg = nlmsg_new(100, gfp);
12705 if (!msg)
12706 return true;
12707
12708 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12709 if (!hdr) {
12710 nlmsg_free(msg);
12711 return true;
12712 }
12713
12714 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12715 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12716 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12717 goto nla_put_failure;
12718
12719 genlmsg_end(msg, hdr);
12720 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12721 return true;
12722
12723 nla_put_failure:
12724 genlmsg_cancel(msg, hdr);
12725 nlmsg_free(msg);
12726 return true;
12727 }
12728
12729 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12730 const u8 *addr, gfp_t gfp)
12731 {
12732 struct wireless_dev *wdev = dev->ieee80211_ptr;
12733 bool ret;
12734
12735 trace_cfg80211_rx_spurious_frame(dev, addr);
12736
12737 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12738 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12739 trace_cfg80211_return_bool(false);
12740 return false;
12741 }
12742 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12743 addr, gfp);
12744 trace_cfg80211_return_bool(ret);
12745 return ret;
12746 }
12747 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12748
12749 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12750 const u8 *addr, gfp_t gfp)
12751 {
12752 struct wireless_dev *wdev = dev->ieee80211_ptr;
12753 bool ret;
12754
12755 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12756
12757 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12758 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12759 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12760 trace_cfg80211_return_bool(false);
12761 return false;
12762 }
12763 ret = __nl80211_unexpected_frame(dev,
12764 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12765 addr, gfp);
12766 trace_cfg80211_return_bool(ret);
12767 return ret;
12768 }
12769 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12770
12771 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12772 struct wireless_dev *wdev, u32 nlportid,
12773 int freq, int sig_dbm,
12774 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12775 {
12776 struct net_device *netdev = wdev->netdev;
12777 struct sk_buff *msg;
12778 void *hdr;
12779
12780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12781 if (!msg)
12782 return -ENOMEM;
12783
12784 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12785 if (!hdr) {
12786 nlmsg_free(msg);
12787 return -ENOMEM;
12788 }
12789
12790 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12791 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12792 netdev->ifindex)) ||
12793 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12794 NL80211_ATTR_PAD) ||
12795 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12796 (sig_dbm &&
12797 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12798 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12799 (flags &&
12800 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12801 goto nla_put_failure;
12802
12803 genlmsg_end(msg, hdr);
12804
12805 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12806
12807 nla_put_failure:
12808 genlmsg_cancel(msg, hdr);
12809 nlmsg_free(msg);
12810 return -ENOBUFS;
12811 }
12812
12813 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12814 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12815 {
12816 struct wiphy *wiphy = wdev->wiphy;
12817 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12818 struct net_device *netdev = wdev->netdev;
12819 struct sk_buff *msg;
12820 void *hdr;
12821
12822 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12823
12824 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12825 if (!msg)
12826 return;
12827
12828 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12829 if (!hdr) {
12830 nlmsg_free(msg);
12831 return;
12832 }
12833
12834 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12835 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12836 netdev->ifindex)) ||
12837 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12838 NL80211_ATTR_PAD) ||
12839 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12840 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12841 NL80211_ATTR_PAD) ||
12842 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12843 goto nla_put_failure;
12844
12845 genlmsg_end(msg, hdr);
12846
12847 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12848 NL80211_MCGRP_MLME, gfp);
12849 return;
12850
12851 nla_put_failure:
12852 genlmsg_cancel(msg, hdr);
12853 nlmsg_free(msg);
12854 }
12855 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12856
12857 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12858 const char *mac, gfp_t gfp)
12859 {
12860 struct wireless_dev *wdev = dev->ieee80211_ptr;
12861 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12862 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12863 void **cb;
12864
12865 if (!msg)
12866 return NULL;
12867
12868 cb = (void **)msg->cb;
12869
12870 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12871 if (!cb[0]) {
12872 nlmsg_free(msg);
12873 return NULL;
12874 }
12875
12876 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12877 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12878 goto nla_put_failure;
12879
12880 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12881 goto nla_put_failure;
12882
12883 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12884 if (!cb[1])
12885 goto nla_put_failure;
12886
12887 cb[2] = rdev;
12888
12889 return msg;
12890 nla_put_failure:
12891 nlmsg_free(msg);
12892 return NULL;
12893 }
12894
12895 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12896 {
12897 void **cb = (void **)msg->cb;
12898 struct cfg80211_registered_device *rdev = cb[2];
12899
12900 nla_nest_end(msg, cb[1]);
12901 genlmsg_end(msg, cb[0]);
12902
12903 memset(msg->cb, 0, sizeof(msg->cb));
12904
12905 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12906 NL80211_MCGRP_MLME, gfp);
12907 }
12908
12909 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12910 enum nl80211_cqm_rssi_threshold_event rssi_event,
12911 gfp_t gfp)
12912 {
12913 struct sk_buff *msg;
12914
12915 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12916
12917 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12918 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12919 return;
12920
12921 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12922 if (!msg)
12923 return;
12924
12925 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12926 rssi_event))
12927 goto nla_put_failure;
12928
12929 cfg80211_send_cqm(msg, gfp);
12930
12931 return;
12932
12933 nla_put_failure:
12934 nlmsg_free(msg);
12935 }
12936 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12937
12938 void cfg80211_cqm_txe_notify(struct net_device *dev,
12939 const u8 *peer, u32 num_packets,
12940 u32 rate, u32 intvl, gfp_t gfp)
12941 {
12942 struct sk_buff *msg;
12943
12944 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12945 if (!msg)
12946 return;
12947
12948 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12949 goto nla_put_failure;
12950
12951 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12952 goto nla_put_failure;
12953
12954 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12955 goto nla_put_failure;
12956
12957 cfg80211_send_cqm(msg, gfp);
12958 return;
12959
12960 nla_put_failure:
12961 nlmsg_free(msg);
12962 }
12963 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12964
12965 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12966 const u8 *peer, u32 num_packets, gfp_t gfp)
12967 {
12968 struct sk_buff *msg;
12969
12970 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12971
12972 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12973 if (!msg)
12974 return;
12975
12976 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12977 goto nla_put_failure;
12978
12979 cfg80211_send_cqm(msg, gfp);
12980 return;
12981
12982 nla_put_failure:
12983 nlmsg_free(msg);
12984 }
12985 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12986
12987 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12988 {
12989 struct sk_buff *msg;
12990
12991 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12992 if (!msg)
12993 return;
12994
12995 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12996 goto nla_put_failure;
12997
12998 cfg80211_send_cqm(msg, gfp);
12999 return;
13000
13001 nla_put_failure:
13002 nlmsg_free(msg);
13003 }
13004 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13005
13006 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13007 struct net_device *netdev, const u8 *bssid,
13008 const u8 *replay_ctr, gfp_t gfp)
13009 {
13010 struct sk_buff *msg;
13011 struct nlattr *rekey_attr;
13012 void *hdr;
13013
13014 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13015 if (!msg)
13016 return;
13017
13018 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13019 if (!hdr) {
13020 nlmsg_free(msg);
13021 return;
13022 }
13023
13024 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13025 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13026 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13027 goto nla_put_failure;
13028
13029 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13030 if (!rekey_attr)
13031 goto nla_put_failure;
13032
13033 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13034 NL80211_REPLAY_CTR_LEN, replay_ctr))
13035 goto nla_put_failure;
13036
13037 nla_nest_end(msg, rekey_attr);
13038
13039 genlmsg_end(msg, hdr);
13040
13041 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13042 NL80211_MCGRP_MLME, gfp);
13043 return;
13044
13045 nla_put_failure:
13046 genlmsg_cancel(msg, hdr);
13047 nlmsg_free(msg);
13048 }
13049
13050 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13051 const u8 *replay_ctr, gfp_t gfp)
13052 {
13053 struct wireless_dev *wdev = dev->ieee80211_ptr;
13054 struct wiphy *wiphy = wdev->wiphy;
13055 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13056
13057 trace_cfg80211_gtk_rekey_notify(dev, bssid);
13058 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
13059 }
13060 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
13061
13062 static void
13063 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
13064 struct net_device *netdev, int index,
13065 const u8 *bssid, bool preauth, gfp_t gfp)
13066 {
13067 struct sk_buff *msg;
13068 struct nlattr *attr;
13069 void *hdr;
13070
13071 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13072 if (!msg)
13073 return;
13074
13075 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
13076 if (!hdr) {
13077 nlmsg_free(msg);
13078 return;
13079 }
13080
13081 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13082 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13083 goto nla_put_failure;
13084
13085 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
13086 if (!attr)
13087 goto nla_put_failure;
13088
13089 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
13090 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
13091 (preauth &&
13092 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
13093 goto nla_put_failure;
13094
13095 nla_nest_end(msg, attr);
13096
13097 genlmsg_end(msg, hdr);
13098
13099 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13100 NL80211_MCGRP_MLME, gfp);
13101 return;
13102
13103 nla_put_failure:
13104 genlmsg_cancel(msg, hdr);
13105 nlmsg_free(msg);
13106 }
13107
13108 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
13109 const u8 *bssid, bool preauth, gfp_t gfp)
13110 {
13111 struct wireless_dev *wdev = dev->ieee80211_ptr;
13112 struct wiphy *wiphy = wdev->wiphy;
13113 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13114
13115 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
13116 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
13117 }
13118 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
13119
13120 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
13121 struct net_device *netdev,
13122 struct cfg80211_chan_def *chandef,
13123 gfp_t gfp,
13124 enum nl80211_commands notif,
13125 u8 count)
13126 {
13127 struct sk_buff *msg;
13128 void *hdr;
13129
13130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13131 if (!msg)
13132 return;
13133
13134 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
13135 if (!hdr) {
13136 nlmsg_free(msg);
13137 return;
13138 }
13139
13140 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13141 goto nla_put_failure;
13142
13143 if (nl80211_send_chandef(msg, chandef))
13144 goto nla_put_failure;
13145
13146 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
13147 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
13148 goto nla_put_failure;
13149
13150 genlmsg_end(msg, hdr);
13151
13152 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13153 NL80211_MCGRP_MLME, gfp);
13154 return;
13155
13156 nla_put_failure:
13157 genlmsg_cancel(msg, hdr);
13158 nlmsg_free(msg);
13159 }
13160
13161 void cfg80211_ch_switch_notify(struct net_device *dev,
13162 struct cfg80211_chan_def *chandef)
13163 {
13164 struct wireless_dev *wdev = dev->ieee80211_ptr;
13165 struct wiphy *wiphy = wdev->wiphy;
13166 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13167
13168 ASSERT_WDEV_LOCK(wdev);
13169
13170 trace_cfg80211_ch_switch_notify(dev, chandef);
13171
13172 wdev->chandef = *chandef;
13173 wdev->preset_chandef = *chandef;
13174 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13175 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
13176 }
13177 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
13178
13179 void cfg80211_ch_switch_started_notify(struct net_device *dev,
13180 struct cfg80211_chan_def *chandef,
13181 u8 count)
13182 {
13183 struct wireless_dev *wdev = dev->ieee80211_ptr;
13184 struct wiphy *wiphy = wdev->wiphy;
13185 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13186
13187 trace_cfg80211_ch_switch_started_notify(dev, chandef);
13188
13189 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13190 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
13191 }
13192 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
13193
13194 void
13195 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
13196 const struct cfg80211_chan_def *chandef,
13197 enum nl80211_radar_event event,
13198 struct net_device *netdev, gfp_t gfp)
13199 {
13200 struct sk_buff *msg;
13201 void *hdr;
13202
13203 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13204 if (!msg)
13205 return;
13206
13207 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
13208 if (!hdr) {
13209 nlmsg_free(msg);
13210 return;
13211 }
13212
13213 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
13214 goto nla_put_failure;
13215
13216 /* NOP and radar events don't need a netdev parameter */
13217 if (netdev) {
13218 struct wireless_dev *wdev = netdev->ieee80211_ptr;
13219
13220 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13221 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13222 NL80211_ATTR_PAD))
13223 goto nla_put_failure;
13224 }
13225
13226 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
13227 goto nla_put_failure;
13228
13229 if (nl80211_send_chandef(msg, chandef))
13230 goto nla_put_failure;
13231
13232 genlmsg_end(msg, hdr);
13233
13234 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13235 NL80211_MCGRP_MLME, gfp);
13236 return;
13237
13238 nla_put_failure:
13239 genlmsg_cancel(msg, hdr);
13240 nlmsg_free(msg);
13241 }
13242
13243 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
13244 u64 cookie, bool acked, gfp_t gfp)
13245 {
13246 struct wireless_dev *wdev = dev->ieee80211_ptr;
13247 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13248 struct sk_buff *msg;
13249 void *hdr;
13250
13251 trace_cfg80211_probe_status(dev, addr, cookie, acked);
13252
13253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13254
13255 if (!msg)
13256 return;
13257
13258 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
13259 if (!hdr) {
13260 nlmsg_free(msg);
13261 return;
13262 }
13263
13264 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13265 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13266 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13267 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13268 NL80211_ATTR_PAD) ||
13269 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
13270 goto nla_put_failure;
13271
13272 genlmsg_end(msg, hdr);
13273
13274 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13275 NL80211_MCGRP_MLME, gfp);
13276 return;
13277
13278 nla_put_failure:
13279 genlmsg_cancel(msg, hdr);
13280 nlmsg_free(msg);
13281 }
13282 EXPORT_SYMBOL(cfg80211_probe_status);
13283
13284 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
13285 const u8 *frame, size_t len,
13286 int freq, int sig_dbm)
13287 {
13288 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13289 struct sk_buff *msg;
13290 void *hdr;
13291 struct cfg80211_beacon_registration *reg;
13292
13293 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
13294
13295 spin_lock_bh(&rdev->beacon_registrations_lock);
13296 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13297 msg = nlmsg_new(len + 100, GFP_ATOMIC);
13298 if (!msg) {
13299 spin_unlock_bh(&rdev->beacon_registrations_lock);
13300 return;
13301 }
13302
13303 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13304 if (!hdr)
13305 goto nla_put_failure;
13306
13307 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13308 (freq &&
13309 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
13310 (sig_dbm &&
13311 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13312 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
13313 goto nla_put_failure;
13314
13315 genlmsg_end(msg, hdr);
13316
13317 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
13318 }
13319 spin_unlock_bh(&rdev->beacon_registrations_lock);
13320 return;
13321
13322 nla_put_failure:
13323 spin_unlock_bh(&rdev->beacon_registrations_lock);
13324 if (hdr)
13325 genlmsg_cancel(msg, hdr);
13326 nlmsg_free(msg);
13327 }
13328 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
13329
13330 #ifdef CONFIG_PM
13331 static int cfg80211_net_detect_results(struct sk_buff *msg,
13332 struct cfg80211_wowlan_wakeup *wakeup)
13333 {
13334 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
13335 struct nlattr *nl_results, *nl_match, *nl_freqs;
13336 int i, j;
13337
13338 nl_results = nla_nest_start(
13339 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
13340 if (!nl_results)
13341 return -EMSGSIZE;
13342
13343 for (i = 0; i < nd->n_matches; i++) {
13344 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
13345
13346 nl_match = nla_nest_start(msg, i);
13347 if (!nl_match)
13348 break;
13349
13350 /* The SSID attribute is optional in nl80211, but for
13351 * simplicity reasons it's always present in the
13352 * cfg80211 structure. If a driver can't pass the
13353 * SSID, that needs to be changed. A zero length SSID
13354 * is still a valid SSID (wildcard), so it cannot be
13355 * used for this purpose.
13356 */
13357 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
13358 match->ssid.ssid)) {
13359 nla_nest_cancel(msg, nl_match);
13360 goto out;
13361 }
13362
13363 if (match->n_channels) {
13364 nl_freqs = nla_nest_start(
13365 msg, NL80211_ATTR_SCAN_FREQUENCIES);
13366 if (!nl_freqs) {
13367 nla_nest_cancel(msg, nl_match);
13368 goto out;
13369 }
13370
13371 for (j = 0; j < match->n_channels; j++) {
13372 if (nla_put_u32(msg, j, match->channels[j])) {
13373 nla_nest_cancel(msg, nl_freqs);
13374 nla_nest_cancel(msg, nl_match);
13375 goto out;
13376 }
13377 }
13378
13379 nla_nest_end(msg, nl_freqs);
13380 }
13381
13382 nla_nest_end(msg, nl_match);
13383 }
13384
13385 out:
13386 nla_nest_end(msg, nl_results);
13387 return 0;
13388 }
13389
13390 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13391 struct cfg80211_wowlan_wakeup *wakeup,
13392 gfp_t gfp)
13393 {
13394 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13395 struct sk_buff *msg;
13396 void *hdr;
13397 int size = 200;
13398
13399 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13400
13401 if (wakeup)
13402 size += wakeup->packet_present_len;
13403
13404 msg = nlmsg_new(size, gfp);
13405 if (!msg)
13406 return;
13407
13408 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13409 if (!hdr)
13410 goto free_msg;
13411
13412 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13413 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13414 NL80211_ATTR_PAD))
13415 goto free_msg;
13416
13417 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13418 wdev->netdev->ifindex))
13419 goto free_msg;
13420
13421 if (wakeup) {
13422 struct nlattr *reasons;
13423
13424 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13425 if (!reasons)
13426 goto free_msg;
13427
13428 if (wakeup->disconnect &&
13429 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13430 goto free_msg;
13431 if (wakeup->magic_pkt &&
13432 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13433 goto free_msg;
13434 if (wakeup->gtk_rekey_failure &&
13435 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13436 goto free_msg;
13437 if (wakeup->eap_identity_req &&
13438 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13439 goto free_msg;
13440 if (wakeup->four_way_handshake &&
13441 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13442 goto free_msg;
13443 if (wakeup->rfkill_release &&
13444 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13445 goto free_msg;
13446
13447 if (wakeup->pattern_idx >= 0 &&
13448 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13449 wakeup->pattern_idx))
13450 goto free_msg;
13451
13452 if (wakeup->tcp_match &&
13453 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13454 goto free_msg;
13455
13456 if (wakeup->tcp_connlost &&
13457 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13458 goto free_msg;
13459
13460 if (wakeup->tcp_nomoretokens &&
13461 nla_put_flag(msg,
13462 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13463 goto free_msg;
13464
13465 if (wakeup->packet) {
13466 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13467 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13468
13469 if (!wakeup->packet_80211) {
13470 pkt_attr =
13471 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13472 len_attr =
13473 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13474 }
13475
13476 if (wakeup->packet_len &&
13477 nla_put_u32(msg, len_attr, wakeup->packet_len))
13478 goto free_msg;
13479
13480 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13481 wakeup->packet))
13482 goto free_msg;
13483 }
13484
13485 if (wakeup->net_detect &&
13486 cfg80211_net_detect_results(msg, wakeup))
13487 goto free_msg;
13488
13489 nla_nest_end(msg, reasons);
13490 }
13491
13492 genlmsg_end(msg, hdr);
13493
13494 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13495 NL80211_MCGRP_MLME, gfp);
13496 return;
13497
13498 free_msg:
13499 nlmsg_free(msg);
13500 }
13501 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13502 #endif
13503
13504 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13505 enum nl80211_tdls_operation oper,
13506 u16 reason_code, gfp_t gfp)
13507 {
13508 struct wireless_dev *wdev = dev->ieee80211_ptr;
13509 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13510 struct sk_buff *msg;
13511 void *hdr;
13512
13513 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13514 reason_code);
13515
13516 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13517 if (!msg)
13518 return;
13519
13520 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13521 if (!hdr) {
13522 nlmsg_free(msg);
13523 return;
13524 }
13525
13526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13527 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13528 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13529 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13530 (reason_code > 0 &&
13531 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13532 goto nla_put_failure;
13533
13534 genlmsg_end(msg, hdr);
13535
13536 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13537 NL80211_MCGRP_MLME, gfp);
13538 return;
13539
13540 nla_put_failure:
13541 genlmsg_cancel(msg, hdr);
13542 nlmsg_free(msg);
13543 }
13544 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13545
13546 static int nl80211_netlink_notify(struct notifier_block * nb,
13547 unsigned long state,
13548 void *_notify)
13549 {
13550 struct netlink_notify *notify = _notify;
13551 struct cfg80211_registered_device *rdev;
13552 struct wireless_dev *wdev;
13553 struct cfg80211_beacon_registration *reg, *tmp;
13554
13555 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
13556 return NOTIFY_DONE;
13557
13558 rcu_read_lock();
13559
13560 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13561 bool schedule_destroy_work = false;
13562 bool schedule_scan_stop = false;
13563 struct cfg80211_sched_scan_request *sched_scan_req =
13564 rcu_dereference(rdev->sched_scan_req);
13565
13566 if (sched_scan_req && notify->portid &&
13567 sched_scan_req->owner_nlportid == notify->portid)
13568 schedule_scan_stop = true;
13569
13570 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
13571 cfg80211_mlme_unregister_socket(wdev, notify->portid);
13572
13573 if (wdev->owner_nlportid == notify->portid)
13574 schedule_destroy_work = true;
13575 }
13576
13577 spin_lock_bh(&rdev->beacon_registrations_lock);
13578 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13579 list) {
13580 if (reg->nlportid == notify->portid) {
13581 list_del(&reg->list);
13582 kfree(reg);
13583 break;
13584 }
13585 }
13586 spin_unlock_bh(&rdev->beacon_registrations_lock);
13587
13588 if (schedule_destroy_work) {
13589 struct cfg80211_iface_destroy *destroy;
13590
13591 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13592 if (destroy) {
13593 destroy->nlportid = notify->portid;
13594 spin_lock(&rdev->destroy_list_lock);
13595 list_add(&destroy->list, &rdev->destroy_list);
13596 spin_unlock(&rdev->destroy_list_lock);
13597 schedule_work(&rdev->destroy_work);
13598 }
13599 } else if (schedule_scan_stop) {
13600 sched_scan_req->owner_nlportid = 0;
13601
13602 if (rdev->ops->sched_scan_stop &&
13603 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13604 schedule_work(&rdev->sched_scan_stop_wk);
13605 }
13606 }
13607
13608 rcu_read_unlock();
13609
13610 /*
13611 * It is possible that the user space process that is controlling the
13612 * indoor setting disappeared, so notify the regulatory core.
13613 */
13614 regulatory_netlink_notify(notify->portid);
13615 return NOTIFY_OK;
13616 }
13617
13618 static struct notifier_block nl80211_netlink_notifier = {
13619 .notifier_call = nl80211_netlink_notify,
13620 };
13621
13622 void cfg80211_ft_event(struct net_device *netdev,
13623 struct cfg80211_ft_event_params *ft_event)
13624 {
13625 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13626 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13627 struct sk_buff *msg;
13628 void *hdr;
13629
13630 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13631
13632 if (!ft_event->target_ap)
13633 return;
13634
13635 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13636 if (!msg)
13637 return;
13638
13639 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13640 if (!hdr)
13641 goto out;
13642
13643 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13644 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13645 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13646 goto out;
13647
13648 if (ft_event->ies &&
13649 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13650 goto out;
13651 if (ft_event->ric_ies &&
13652 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13653 ft_event->ric_ies))
13654 goto out;
13655
13656 genlmsg_end(msg, hdr);
13657
13658 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13659 NL80211_MCGRP_MLME, GFP_KERNEL);
13660 return;
13661 out:
13662 nlmsg_free(msg);
13663 }
13664 EXPORT_SYMBOL(cfg80211_ft_event);
13665
13666 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13667 {
13668 struct cfg80211_registered_device *rdev;
13669 struct sk_buff *msg;
13670 void *hdr;
13671 u32 nlportid;
13672
13673 rdev = wiphy_to_rdev(wdev->wiphy);
13674 if (!rdev->crit_proto_nlportid)
13675 return;
13676
13677 nlportid = rdev->crit_proto_nlportid;
13678 rdev->crit_proto_nlportid = 0;
13679
13680 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13681 if (!msg)
13682 return;
13683
13684 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13685 if (!hdr)
13686 goto nla_put_failure;
13687
13688 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13689 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13690 NL80211_ATTR_PAD))
13691 goto nla_put_failure;
13692
13693 genlmsg_end(msg, hdr);
13694
13695 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13696 return;
13697
13698 nla_put_failure:
13699 if (hdr)
13700 genlmsg_cancel(msg, hdr);
13701 nlmsg_free(msg);
13702 }
13703 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13704
13705 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13706 {
13707 struct wiphy *wiphy = wdev->wiphy;
13708 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13709 struct sk_buff *msg;
13710 void *hdr;
13711
13712 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13713 if (!msg)
13714 return;
13715
13716 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13717 if (!hdr)
13718 goto out;
13719
13720 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13721 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13722 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13723 NL80211_ATTR_PAD))
13724 goto out;
13725
13726 genlmsg_end(msg, hdr);
13727
13728 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13729 NL80211_MCGRP_MLME, GFP_KERNEL);
13730 return;
13731 out:
13732 nlmsg_free(msg);
13733 }
13734
13735 /* initialisation/exit functions */
13736
13737 int nl80211_init(void)
13738 {
13739 int err;
13740
13741 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13742 nl80211_mcgrps);
13743 if (err)
13744 return err;
13745
13746 err = netlink_register_notifier(&nl80211_netlink_notifier);
13747 if (err)
13748 goto err_out;
13749
13750 return 0;
13751 err_out:
13752 genl_unregister_family(&nl80211_fam);
13753 return err;
13754 }
13755
13756 void nl80211_exit(void)
13757 {
13758 netlink_unregister_notifier(&nl80211_netlink_notifier);
13759 genl_unregister_family(&nl80211_fam);
13760 }
Linux kernel - Deliverables
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