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Merge remote-tracking branch 'vfio/next'
[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 int filter_wiphy = -1;
2529 struct cfg80211_registered_device *rdev;
2530 struct wireless_dev *wdev;
2531
2532 rtnl_lock();
2533 if (!cb->args[2]) {
2534 struct nl80211_dump_wiphy_state state = {
2535 .filter_wiphy = -1,
2536 };
2537 int ret;
2538
2539 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2540 if (ret)
2541 return ret;
2542
2543 filter_wiphy = state.filter_wiphy;
2544
2545 /*
2546 * if filtering, set cb->args[2] to +1 since 0 is the default
2547 * value needed to determine that parsing is necessary.
2548 */
2549 if (filter_wiphy >= 0)
2550 cb->args[2] = filter_wiphy + 1;
2551 else
2552 cb->args[2] = -1;
2553 } else if (cb->args[2] > 0) {
2554 filter_wiphy = cb->args[2] - 1;
2555 }
2556
2557 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2558 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2559 continue;
2560 if (wp_idx < wp_start) {
2561 wp_idx++;
2562 continue;
2563 }
2564
2565 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2566 continue;
2567
2568 if_idx = 0;
2569
2570 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2571 if (if_idx < if_start) {
2572 if_idx++;
2573 continue;
2574 }
2575 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2576 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2577 rdev, wdev, false) < 0) {
2578 goto out;
2579 }
2580 if_idx++;
2581 }
2582
2583 wp_idx++;
2584 }
2585 out:
2586 rtnl_unlock();
2587
2588 cb->args[0] = wp_idx;
2589 cb->args[1] = if_idx;
2590
2591 return skb->len;
2592 }
2593
2594 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2595 {
2596 struct sk_buff *msg;
2597 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2598 struct wireless_dev *wdev = info->user_ptr[1];
2599
2600 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2601 if (!msg)
2602 return -ENOMEM;
2603
2604 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2605 rdev, wdev, false) < 0) {
2606 nlmsg_free(msg);
2607 return -ENOBUFS;
2608 }
2609
2610 return genlmsg_reply(msg, info);
2611 }
2612
2613 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2614 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2615 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2616 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2617 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2618 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2619 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2620 };
2621
2622 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2623 {
2624 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2625 int flag;
2626
2627 *mntrflags = 0;
2628
2629 if (!nla)
2630 return -EINVAL;
2631
2632 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2633 nla, mntr_flags_policy))
2634 return -EINVAL;
2635
2636 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2637 if (flags[flag])
2638 *mntrflags |= (1<<flag);
2639
2640 return 0;
2641 }
2642
2643 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2644 struct net_device *netdev, u8 use_4addr,
2645 enum nl80211_iftype iftype)
2646 {
2647 if (!use_4addr) {
2648 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2649 return -EBUSY;
2650 return 0;
2651 }
2652
2653 switch (iftype) {
2654 case NL80211_IFTYPE_AP_VLAN:
2655 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2656 return 0;
2657 break;
2658 case NL80211_IFTYPE_STATION:
2659 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2660 return 0;
2661 break;
2662 default:
2663 break;
2664 }
2665
2666 return -EOPNOTSUPP;
2667 }
2668
2669 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2670 {
2671 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2672 struct vif_params params;
2673 int err;
2674 enum nl80211_iftype otype, ntype;
2675 struct net_device *dev = info->user_ptr[1];
2676 u32 _flags, *flags = NULL;
2677 bool change = false;
2678
2679 memset(&params, 0, sizeof(params));
2680
2681 otype = ntype = dev->ieee80211_ptr->iftype;
2682
2683 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2684 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2685 if (otype != ntype)
2686 change = true;
2687 if (ntype > NL80211_IFTYPE_MAX)
2688 return -EINVAL;
2689 }
2690
2691 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2692 struct wireless_dev *wdev = dev->ieee80211_ptr;
2693
2694 if (ntype != NL80211_IFTYPE_MESH_POINT)
2695 return -EINVAL;
2696 if (netif_running(dev))
2697 return -EBUSY;
2698
2699 wdev_lock(wdev);
2700 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2701 IEEE80211_MAX_MESH_ID_LEN);
2702 wdev->mesh_id_up_len =
2703 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2704 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2705 wdev->mesh_id_up_len);
2706 wdev_unlock(wdev);
2707 }
2708
2709 if (info->attrs[NL80211_ATTR_4ADDR]) {
2710 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2711 change = true;
2712 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2713 if (err)
2714 return err;
2715 } else {
2716 params.use_4addr = -1;
2717 }
2718
2719 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2720 if (ntype != NL80211_IFTYPE_MONITOR)
2721 return -EINVAL;
2722 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2723 &_flags);
2724 if (err)
2725 return err;
2726
2727 flags = &_flags;
2728 change = true;
2729 }
2730
2731 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2732 const u8 *mumimo_groups;
2733 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2734
2735 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2736 return -EOPNOTSUPP;
2737
2738 mumimo_groups =
2739 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2740
2741 /* bits 0 and 63 are reserved and must be zero */
2742 if ((mumimo_groups[0] & BIT(7)) ||
2743 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2744 return -EINVAL;
2745
2746 memcpy(params.vht_mumimo_groups, mumimo_groups,
2747 VHT_MUMIMO_GROUPS_DATA_LEN);
2748 change = true;
2749 }
2750
2751 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2752 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2753
2754 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2755 return -EOPNOTSUPP;
2756
2757 nla_memcpy(params.macaddr,
2758 info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2759 ETH_ALEN);
2760 change = true;
2761 }
2762
2763 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2764 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2765 return -EOPNOTSUPP;
2766
2767 if (change)
2768 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2769 else
2770 err = 0;
2771
2772 if (!err && params.use_4addr != -1)
2773 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2774
2775 return err;
2776 }
2777
2778 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2779 {
2780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2781 struct vif_params params;
2782 struct wireless_dev *wdev;
2783 struct sk_buff *msg;
2784 int err;
2785 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2786 u32 flags;
2787
2788 /* to avoid failing a new interface creation due to pending removal */
2789 cfg80211_destroy_ifaces(rdev);
2790
2791 memset(&params, 0, sizeof(params));
2792
2793 if (!info->attrs[NL80211_ATTR_IFNAME])
2794 return -EINVAL;
2795
2796 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2797 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2798 if (type > NL80211_IFTYPE_MAX)
2799 return -EINVAL;
2800 }
2801
2802 if (!rdev->ops->add_virtual_intf ||
2803 !(rdev->wiphy.interface_modes & (1 << type)))
2804 return -EOPNOTSUPP;
2805
2806 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2807 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2808 info->attrs[NL80211_ATTR_MAC]) {
2809 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2810 ETH_ALEN);
2811 if (!is_valid_ether_addr(params.macaddr))
2812 return -EADDRNOTAVAIL;
2813 }
2814
2815 if (info->attrs[NL80211_ATTR_4ADDR]) {
2816 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2817 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2818 if (err)
2819 return err;
2820 }
2821
2822 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2823 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2824 &flags);
2825
2826 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2827 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2828 return -EOPNOTSUPP;
2829
2830 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2831 if (!msg)
2832 return -ENOMEM;
2833
2834 wdev = rdev_add_virtual_intf(rdev,
2835 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2836 NET_NAME_USER, type, err ? NULL : &flags,
2837 &params);
2838 if (WARN_ON(!wdev)) {
2839 nlmsg_free(msg);
2840 return -EPROTO;
2841 } else if (IS_ERR(wdev)) {
2842 nlmsg_free(msg);
2843 return PTR_ERR(wdev);
2844 }
2845
2846 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2847 wdev->owner_nlportid = info->snd_portid;
2848
2849 switch (type) {
2850 case NL80211_IFTYPE_MESH_POINT:
2851 if (!info->attrs[NL80211_ATTR_MESH_ID])
2852 break;
2853 wdev_lock(wdev);
2854 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2855 IEEE80211_MAX_MESH_ID_LEN);
2856 wdev->mesh_id_up_len =
2857 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2858 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2859 wdev->mesh_id_up_len);
2860 wdev_unlock(wdev);
2861 break;
2862 case NL80211_IFTYPE_P2P_DEVICE:
2863 /*
2864 * P2P Device doesn't have a netdev, so doesn't go
2865 * through the netdev notifier and must be added here
2866 */
2867 mutex_init(&wdev->mtx);
2868 INIT_LIST_HEAD(&wdev->event_list);
2869 spin_lock_init(&wdev->event_lock);
2870 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2871 spin_lock_init(&wdev->mgmt_registrations_lock);
2872
2873 wdev->identifier = ++rdev->wdev_id;
2874 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2875 rdev->devlist_generation++;
2876 break;
2877 default:
2878 break;
2879 }
2880
2881 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2882 rdev, wdev, false) < 0) {
2883 nlmsg_free(msg);
2884 return -ENOBUFS;
2885 }
2886
2887 /*
2888 * For wdevs which have no associated netdev object (e.g. of type
2889 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2890 * For all other types, the event will be generated from the
2891 * netdev notifier
2892 */
2893 if (!wdev->netdev)
2894 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2895
2896 return genlmsg_reply(msg, info);
2897 }
2898
2899 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2900 {
2901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2902 struct wireless_dev *wdev = info->user_ptr[1];
2903
2904 if (!rdev->ops->del_virtual_intf)
2905 return -EOPNOTSUPP;
2906
2907 /*
2908 * If we remove a wireless device without a netdev then clear
2909 * user_ptr[1] so that nl80211_post_doit won't dereference it
2910 * to check if it needs to do dev_put(). Otherwise it crashes
2911 * since the wdev has been freed, unlike with a netdev where
2912 * we need the dev_put() for the netdev to really be freed.
2913 */
2914 if (!wdev->netdev)
2915 info->user_ptr[1] = NULL;
2916
2917 return rdev_del_virtual_intf(rdev, wdev);
2918 }
2919
2920 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2921 {
2922 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2923 struct net_device *dev = info->user_ptr[1];
2924 u16 noack_map;
2925
2926 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2927 return -EINVAL;
2928
2929 if (!rdev->ops->set_noack_map)
2930 return -EOPNOTSUPP;
2931
2932 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2933
2934 return rdev_set_noack_map(rdev, dev, noack_map);
2935 }
2936
2937 struct get_key_cookie {
2938 struct sk_buff *msg;
2939 int error;
2940 int idx;
2941 };
2942
2943 static void get_key_callback(void *c, struct key_params *params)
2944 {
2945 struct nlattr *key;
2946 struct get_key_cookie *cookie = c;
2947
2948 if ((params->key &&
2949 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2950 params->key_len, params->key)) ||
2951 (params->seq &&
2952 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2953 params->seq_len, params->seq)) ||
2954 (params->cipher &&
2955 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2956 params->cipher)))
2957 goto nla_put_failure;
2958
2959 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2960 if (!key)
2961 goto nla_put_failure;
2962
2963 if ((params->key &&
2964 nla_put(cookie->msg, NL80211_KEY_DATA,
2965 params->key_len, params->key)) ||
2966 (params->seq &&
2967 nla_put(cookie->msg, NL80211_KEY_SEQ,
2968 params->seq_len, params->seq)) ||
2969 (params->cipher &&
2970 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2971 params->cipher)))
2972 goto nla_put_failure;
2973
2974 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2975 goto nla_put_failure;
2976
2977 nla_nest_end(cookie->msg, key);
2978
2979 return;
2980 nla_put_failure:
2981 cookie->error = 1;
2982 }
2983
2984 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2985 {
2986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2987 int err;
2988 struct net_device *dev = info->user_ptr[1];
2989 u8 key_idx = 0;
2990 const u8 *mac_addr = NULL;
2991 bool pairwise;
2992 struct get_key_cookie cookie = {
2993 .error = 0,
2994 };
2995 void *hdr;
2996 struct sk_buff *msg;
2997
2998 if (info->attrs[NL80211_ATTR_KEY_IDX])
2999 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3000
3001 if (key_idx > 5)
3002 return -EINVAL;
3003
3004 if (info->attrs[NL80211_ATTR_MAC])
3005 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3006
3007 pairwise = !!mac_addr;
3008 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3009 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3010
3011 if (kt >= NUM_NL80211_KEYTYPES)
3012 return -EINVAL;
3013 if (kt != NL80211_KEYTYPE_GROUP &&
3014 kt != NL80211_KEYTYPE_PAIRWISE)
3015 return -EINVAL;
3016 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3017 }
3018
3019 if (!rdev->ops->get_key)
3020 return -EOPNOTSUPP;
3021
3022 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3023 return -ENOENT;
3024
3025 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3026 if (!msg)
3027 return -ENOMEM;
3028
3029 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3030 NL80211_CMD_NEW_KEY);
3031 if (!hdr)
3032 goto nla_put_failure;
3033
3034 cookie.msg = msg;
3035 cookie.idx = key_idx;
3036
3037 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3038 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3039 goto nla_put_failure;
3040 if (mac_addr &&
3041 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3042 goto nla_put_failure;
3043
3044 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3045 get_key_callback);
3046
3047 if (err)
3048 goto free_msg;
3049
3050 if (cookie.error)
3051 goto nla_put_failure;
3052
3053 genlmsg_end(msg, hdr);
3054 return genlmsg_reply(msg, info);
3055
3056 nla_put_failure:
3057 err = -ENOBUFS;
3058 free_msg:
3059 nlmsg_free(msg);
3060 return err;
3061 }
3062
3063 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3064 {
3065 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3066 struct key_parse key;
3067 int err;
3068 struct net_device *dev = info->user_ptr[1];
3069
3070 err = nl80211_parse_key(info, &key);
3071 if (err)
3072 return err;
3073
3074 if (key.idx < 0)
3075 return -EINVAL;
3076
3077 /* only support setting default key */
3078 if (!key.def && !key.defmgmt)
3079 return -EINVAL;
3080
3081 wdev_lock(dev->ieee80211_ptr);
3082
3083 if (key.def) {
3084 if (!rdev->ops->set_default_key) {
3085 err = -EOPNOTSUPP;
3086 goto out;
3087 }
3088
3089 err = nl80211_key_allowed(dev->ieee80211_ptr);
3090 if (err)
3091 goto out;
3092
3093 err = rdev_set_default_key(rdev, dev, key.idx,
3094 key.def_uni, key.def_multi);
3095
3096 if (err)
3097 goto out;
3098
3099 #ifdef CONFIG_CFG80211_WEXT
3100 dev->ieee80211_ptr->wext.default_key = key.idx;
3101 #endif
3102 } else {
3103 if (key.def_uni || !key.def_multi) {
3104 err = -EINVAL;
3105 goto out;
3106 }
3107
3108 if (!rdev->ops->set_default_mgmt_key) {
3109 err = -EOPNOTSUPP;
3110 goto out;
3111 }
3112
3113 err = nl80211_key_allowed(dev->ieee80211_ptr);
3114 if (err)
3115 goto out;
3116
3117 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3118 if (err)
3119 goto out;
3120
3121 #ifdef CONFIG_CFG80211_WEXT
3122 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3123 #endif
3124 }
3125
3126 out:
3127 wdev_unlock(dev->ieee80211_ptr);
3128
3129 return err;
3130 }
3131
3132 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3133 {
3134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3135 int err;
3136 struct net_device *dev = info->user_ptr[1];
3137 struct key_parse key;
3138 const u8 *mac_addr = NULL;
3139
3140 err = nl80211_parse_key(info, &key);
3141 if (err)
3142 return err;
3143
3144 if (!key.p.key)
3145 return -EINVAL;
3146
3147 if (info->attrs[NL80211_ATTR_MAC])
3148 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3149
3150 if (key.type == -1) {
3151 if (mac_addr)
3152 key.type = NL80211_KEYTYPE_PAIRWISE;
3153 else
3154 key.type = NL80211_KEYTYPE_GROUP;
3155 }
3156
3157 /* for now */
3158 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3159 key.type != NL80211_KEYTYPE_GROUP)
3160 return -EINVAL;
3161
3162 if (!rdev->ops->add_key)
3163 return -EOPNOTSUPP;
3164
3165 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3166 key.type == NL80211_KEYTYPE_PAIRWISE,
3167 mac_addr))
3168 return -EINVAL;
3169
3170 wdev_lock(dev->ieee80211_ptr);
3171 err = nl80211_key_allowed(dev->ieee80211_ptr);
3172 if (!err)
3173 err = rdev_add_key(rdev, dev, key.idx,
3174 key.type == NL80211_KEYTYPE_PAIRWISE,
3175 mac_addr, &key.p);
3176 wdev_unlock(dev->ieee80211_ptr);
3177
3178 return err;
3179 }
3180
3181 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3182 {
3183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3184 int err;
3185 struct net_device *dev = info->user_ptr[1];
3186 u8 *mac_addr = NULL;
3187 struct key_parse key;
3188
3189 err = nl80211_parse_key(info, &key);
3190 if (err)
3191 return err;
3192
3193 if (info->attrs[NL80211_ATTR_MAC])
3194 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3195
3196 if (key.type == -1) {
3197 if (mac_addr)
3198 key.type = NL80211_KEYTYPE_PAIRWISE;
3199 else
3200 key.type = NL80211_KEYTYPE_GROUP;
3201 }
3202
3203 /* for now */
3204 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3205 key.type != NL80211_KEYTYPE_GROUP)
3206 return -EINVAL;
3207
3208 if (!rdev->ops->del_key)
3209 return -EOPNOTSUPP;
3210
3211 wdev_lock(dev->ieee80211_ptr);
3212 err = nl80211_key_allowed(dev->ieee80211_ptr);
3213
3214 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3215 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3216 err = -ENOENT;
3217
3218 if (!err)
3219 err = rdev_del_key(rdev, dev, key.idx,
3220 key.type == NL80211_KEYTYPE_PAIRWISE,
3221 mac_addr);
3222
3223 #ifdef CONFIG_CFG80211_WEXT
3224 if (!err) {
3225 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3226 dev->ieee80211_ptr->wext.default_key = -1;
3227 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3228 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3229 }
3230 #endif
3231 wdev_unlock(dev->ieee80211_ptr);
3232
3233 return err;
3234 }
3235
3236 /* This function returns an error or the number of nested attributes */
3237 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3238 {
3239 struct nlattr *attr;
3240 int n_entries = 0, tmp;
3241
3242 nla_for_each_nested(attr, nl_attr, tmp) {
3243 if (nla_len(attr) != ETH_ALEN)
3244 return -EINVAL;
3245
3246 n_entries++;
3247 }
3248
3249 return n_entries;
3250 }
3251
3252 /*
3253 * This function parses ACL information and allocates memory for ACL data.
3254 * On successful return, the calling function is responsible to free the
3255 * ACL buffer returned by this function.
3256 */
3257 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3258 struct genl_info *info)
3259 {
3260 enum nl80211_acl_policy acl_policy;
3261 struct nlattr *attr;
3262 struct cfg80211_acl_data *acl;
3263 int i = 0, n_entries, tmp;
3264
3265 if (!wiphy->max_acl_mac_addrs)
3266 return ERR_PTR(-EOPNOTSUPP);
3267
3268 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3269 return ERR_PTR(-EINVAL);
3270
3271 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3272 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3273 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3274 return ERR_PTR(-EINVAL);
3275
3276 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3277 return ERR_PTR(-EINVAL);
3278
3279 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3280 if (n_entries < 0)
3281 return ERR_PTR(n_entries);
3282
3283 if (n_entries > wiphy->max_acl_mac_addrs)
3284 return ERR_PTR(-ENOTSUPP);
3285
3286 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3287 GFP_KERNEL);
3288 if (!acl)
3289 return ERR_PTR(-ENOMEM);
3290
3291 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3292 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3293 i++;
3294 }
3295
3296 acl->n_acl_entries = n_entries;
3297 acl->acl_policy = acl_policy;
3298
3299 return acl;
3300 }
3301
3302 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3303 {
3304 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3305 struct net_device *dev = info->user_ptr[1];
3306 struct cfg80211_acl_data *acl;
3307 int err;
3308
3309 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3310 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3311 return -EOPNOTSUPP;
3312
3313 if (!dev->ieee80211_ptr->beacon_interval)
3314 return -EINVAL;
3315
3316 acl = parse_acl_data(&rdev->wiphy, info);
3317 if (IS_ERR(acl))
3318 return PTR_ERR(acl);
3319
3320 err = rdev_set_mac_acl(rdev, dev, acl);
3321
3322 kfree(acl);
3323
3324 return err;
3325 }
3326
3327 static int nl80211_parse_beacon(struct nlattr *attrs[],
3328 struct cfg80211_beacon_data *bcn)
3329 {
3330 bool haveinfo = false;
3331
3332 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3333 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3334 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3335 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3336 return -EINVAL;
3337
3338 memset(bcn, 0, sizeof(*bcn));
3339
3340 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3341 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3342 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3343 if (!bcn->head_len)
3344 return -EINVAL;
3345 haveinfo = true;
3346 }
3347
3348 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3349 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3350 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3351 haveinfo = true;
3352 }
3353
3354 if (!haveinfo)
3355 return -EINVAL;
3356
3357 if (attrs[NL80211_ATTR_IE]) {
3358 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3359 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3360 }
3361
3362 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3363 bcn->proberesp_ies =
3364 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3365 bcn->proberesp_ies_len =
3366 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3367 }
3368
3369 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3370 bcn->assocresp_ies =
3371 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3372 bcn->assocresp_ies_len =
3373 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3374 }
3375
3376 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3377 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3378 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3379 }
3380
3381 return 0;
3382 }
3383
3384 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3385 struct cfg80211_ap_settings *params)
3386 {
3387 struct wireless_dev *wdev;
3388 bool ret = false;
3389
3390 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3391 if (wdev->iftype != NL80211_IFTYPE_AP &&
3392 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3393 continue;
3394
3395 if (!wdev->preset_chandef.chan)
3396 continue;
3397
3398 params->chandef = wdev->preset_chandef;
3399 ret = true;
3400 break;
3401 }
3402
3403 return ret;
3404 }
3405
3406 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3407 enum nl80211_auth_type auth_type,
3408 enum nl80211_commands cmd)
3409 {
3410 if (auth_type > NL80211_AUTHTYPE_MAX)
3411 return false;
3412
3413 switch (cmd) {
3414 case NL80211_CMD_AUTHENTICATE:
3415 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3416 auth_type == NL80211_AUTHTYPE_SAE)
3417 return false;
3418 return true;
3419 case NL80211_CMD_CONNECT:
3420 case NL80211_CMD_START_AP:
3421 /* SAE not supported yet */
3422 if (auth_type == NL80211_AUTHTYPE_SAE)
3423 return false;
3424 return true;
3425 default:
3426 return false;
3427 }
3428 }
3429
3430 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3431 {
3432 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3433 struct net_device *dev = info->user_ptr[1];
3434 struct wireless_dev *wdev = dev->ieee80211_ptr;
3435 struct cfg80211_ap_settings params;
3436 int err;
3437
3438 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3439 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3440 return -EOPNOTSUPP;
3441
3442 if (!rdev->ops->start_ap)
3443 return -EOPNOTSUPP;
3444
3445 if (wdev->beacon_interval)
3446 return -EALREADY;
3447
3448 memset(&params, 0, sizeof(params));
3449
3450 /* these are required for START_AP */
3451 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3452 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3453 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3454 return -EINVAL;
3455
3456 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3457 if (err)
3458 return err;
3459
3460 params.beacon_interval =
3461 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3462 params.dtim_period =
3463 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3464
3465 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3466 if (err)
3467 return err;
3468
3469 /*
3470 * In theory, some of these attributes should be required here
3471 * but since they were not used when the command was originally
3472 * added, keep them optional for old user space programs to let
3473 * them continue to work with drivers that do not need the
3474 * additional information -- drivers must check!
3475 */
3476 if (info->attrs[NL80211_ATTR_SSID]) {
3477 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3478 params.ssid_len =
3479 nla_len(info->attrs[NL80211_ATTR_SSID]);
3480 if (params.ssid_len == 0 ||
3481 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3482 return -EINVAL;
3483 }
3484
3485 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3486 params.hidden_ssid = nla_get_u32(
3487 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3488 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3489 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3490 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3491 return -EINVAL;
3492 }
3493
3494 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3495
3496 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3497 params.auth_type = nla_get_u32(
3498 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3499 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3500 NL80211_CMD_START_AP))
3501 return -EINVAL;
3502 } else
3503 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3504
3505 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3506 NL80211_MAX_NR_CIPHER_SUITES);
3507 if (err)
3508 return err;
3509
3510 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3511 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3512 return -EOPNOTSUPP;
3513 params.inactivity_timeout = nla_get_u16(
3514 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3515 }
3516
3517 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3518 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3519 return -EINVAL;
3520 params.p2p_ctwindow =
3521 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3522 if (params.p2p_ctwindow > 127)
3523 return -EINVAL;
3524 if (params.p2p_ctwindow != 0 &&
3525 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3526 return -EINVAL;
3527 }
3528
3529 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3530 u8 tmp;
3531
3532 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3533 return -EINVAL;
3534 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3535 if (tmp > 1)
3536 return -EINVAL;
3537 params.p2p_opp_ps = tmp;
3538 if (params.p2p_opp_ps != 0 &&
3539 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3540 return -EINVAL;
3541 }
3542
3543 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3544 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3545 if (err)
3546 return err;
3547 } else if (wdev->preset_chandef.chan) {
3548 params.chandef = wdev->preset_chandef;
3549 } else if (!nl80211_get_ap_channel(rdev, &params))
3550 return -EINVAL;
3551
3552 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3553 wdev->iftype))
3554 return -EINVAL;
3555
3556 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3557 params.smps_mode =
3558 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3559 switch (params.smps_mode) {
3560 case NL80211_SMPS_OFF:
3561 break;
3562 case NL80211_SMPS_STATIC:
3563 if (!(rdev->wiphy.features &
3564 NL80211_FEATURE_STATIC_SMPS))
3565 return -EINVAL;
3566 break;
3567 case NL80211_SMPS_DYNAMIC:
3568 if (!(rdev->wiphy.features &
3569 NL80211_FEATURE_DYNAMIC_SMPS))
3570 return -EINVAL;
3571 break;
3572 default:
3573 return -EINVAL;
3574 }
3575 } else {
3576 params.smps_mode = NL80211_SMPS_OFF;
3577 }
3578
3579 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3580 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3581 return -EOPNOTSUPP;
3582
3583 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3584 params.acl = parse_acl_data(&rdev->wiphy, info);
3585 if (IS_ERR(params.acl))
3586 return PTR_ERR(params.acl);
3587 }
3588
3589 wdev_lock(wdev);
3590 err = rdev_start_ap(rdev, dev, &params);
3591 if (!err) {
3592 wdev->preset_chandef = params.chandef;
3593 wdev->beacon_interval = params.beacon_interval;
3594 wdev->chandef = params.chandef;
3595 wdev->ssid_len = params.ssid_len;
3596 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3597 }
3598 wdev_unlock(wdev);
3599
3600 kfree(params.acl);
3601
3602 return err;
3603 }
3604
3605 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3606 {
3607 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3608 struct net_device *dev = info->user_ptr[1];
3609 struct wireless_dev *wdev = dev->ieee80211_ptr;
3610 struct cfg80211_beacon_data params;
3611 int err;
3612
3613 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3614 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3615 return -EOPNOTSUPP;
3616
3617 if (!rdev->ops->change_beacon)
3618 return -EOPNOTSUPP;
3619
3620 if (!wdev->beacon_interval)
3621 return -EINVAL;
3622
3623 err = nl80211_parse_beacon(info->attrs, &params);
3624 if (err)
3625 return err;
3626
3627 wdev_lock(wdev);
3628 err = rdev_change_beacon(rdev, dev, &params);
3629 wdev_unlock(wdev);
3630
3631 return err;
3632 }
3633
3634 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3635 {
3636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3637 struct net_device *dev = info->user_ptr[1];
3638
3639 return cfg80211_stop_ap(rdev, dev, false);
3640 }
3641
3642 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3643 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3644 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3645 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3646 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3647 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3648 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3649 };
3650
3651 static int parse_station_flags(struct genl_info *info,
3652 enum nl80211_iftype iftype,
3653 struct station_parameters *params)
3654 {
3655 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3656 struct nlattr *nla;
3657 int flag;
3658
3659 /*
3660 * Try parsing the new attribute first so userspace
3661 * can specify both for older kernels.
3662 */
3663 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3664 if (nla) {
3665 struct nl80211_sta_flag_update *sta_flags;
3666
3667 sta_flags = nla_data(nla);
3668 params->sta_flags_mask = sta_flags->mask;
3669 params->sta_flags_set = sta_flags->set;
3670 params->sta_flags_set &= params->sta_flags_mask;
3671 if ((params->sta_flags_mask |
3672 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3673 return -EINVAL;
3674 return 0;
3675 }
3676
3677 /* if present, parse the old attribute */
3678
3679 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3680 if (!nla)
3681 return 0;
3682
3683 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3684 nla, sta_flags_policy))
3685 return -EINVAL;
3686
3687 /*
3688 * Only allow certain flags for interface types so that
3689 * other attributes are silently ignored. Remember that
3690 * this is backward compatibility code with old userspace
3691 * and shouldn't be hit in other cases anyway.
3692 */
3693 switch (iftype) {
3694 case NL80211_IFTYPE_AP:
3695 case NL80211_IFTYPE_AP_VLAN:
3696 case NL80211_IFTYPE_P2P_GO:
3697 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3698 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3699 BIT(NL80211_STA_FLAG_WME) |
3700 BIT(NL80211_STA_FLAG_MFP);
3701 break;
3702 case NL80211_IFTYPE_P2P_CLIENT:
3703 case NL80211_IFTYPE_STATION:
3704 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3705 BIT(NL80211_STA_FLAG_TDLS_PEER);
3706 break;
3707 case NL80211_IFTYPE_MESH_POINT:
3708 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3709 BIT(NL80211_STA_FLAG_MFP) |
3710 BIT(NL80211_STA_FLAG_AUTHORIZED);
3711 default:
3712 return -EINVAL;
3713 }
3714
3715 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3716 if (flags[flag]) {
3717 params->sta_flags_set |= (1<<flag);
3718
3719 /* no longer support new API additions in old API */
3720 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3721 return -EINVAL;
3722 }
3723 }
3724
3725 return 0;
3726 }
3727
3728 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3729 int attr)
3730 {
3731 struct nlattr *rate;
3732 u32 bitrate;
3733 u16 bitrate_compat;
3734 enum nl80211_attrs rate_flg;
3735
3736 rate = nla_nest_start(msg, attr);
3737 if (!rate)
3738 return false;
3739
3740 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3741 bitrate = cfg80211_calculate_bitrate(info);
3742 /* report 16-bit bitrate only if we can */
3743 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3744 if (bitrate > 0 &&
3745 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3746 return false;
3747 if (bitrate_compat > 0 &&
3748 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3749 return false;
3750
3751 switch (info->bw) {
3752 case RATE_INFO_BW_5:
3753 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3754 break;
3755 case RATE_INFO_BW_10:
3756 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3757 break;
3758 default:
3759 WARN_ON(1);
3760 /* fall through */
3761 case RATE_INFO_BW_20:
3762 rate_flg = 0;
3763 break;
3764 case RATE_INFO_BW_40:
3765 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3766 break;
3767 case RATE_INFO_BW_80:
3768 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3769 break;
3770 case RATE_INFO_BW_160:
3771 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3772 break;
3773 }
3774
3775 if (rate_flg && nla_put_flag(msg, rate_flg))
3776 return false;
3777
3778 if (info->flags & RATE_INFO_FLAGS_MCS) {
3779 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
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 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3785 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3786 return false;
3787 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3788 return false;
3789 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3790 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3791 return false;
3792 }
3793
3794 nla_nest_end(msg, rate);
3795 return true;
3796 }
3797
3798 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3799 int id)
3800 {
3801 void *attr;
3802 int i = 0;
3803
3804 if (!mask)
3805 return true;
3806
3807 attr = nla_nest_start(msg, id);
3808 if (!attr)
3809 return false;
3810
3811 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3812 if (!(mask & BIT(i)))
3813 continue;
3814
3815 if (nla_put_u8(msg, i, signal[i]))
3816 return false;
3817 }
3818
3819 nla_nest_end(msg, attr);
3820
3821 return true;
3822 }
3823
3824 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3825 u32 seq, int flags,
3826 struct cfg80211_registered_device *rdev,
3827 struct net_device *dev,
3828 const u8 *mac_addr, struct station_info *sinfo)
3829 {
3830 void *hdr;
3831 struct nlattr *sinfoattr, *bss_param;
3832
3833 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3834 if (!hdr)
3835 return -1;
3836
3837 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3838 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3839 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3840 goto nla_put_failure;
3841
3842 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3843 if (!sinfoattr)
3844 goto nla_put_failure;
3845
3846 #define PUT_SINFO(attr, memb, type) do { \
3847 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
3848 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
3849 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3850 sinfo->memb)) \
3851 goto nla_put_failure; \
3852 } while (0)
3853 #define PUT_SINFO_U64(attr, memb) do { \
3854 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
3855 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
3856 sinfo->memb, NL80211_STA_INFO_PAD)) \
3857 goto nla_put_failure; \
3858 } while (0)
3859
3860 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3861 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3862
3863 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3864 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3865 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3866 (u32)sinfo->rx_bytes))
3867 goto nla_put_failure;
3868
3869 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3870 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3871 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3872 (u32)sinfo->tx_bytes))
3873 goto nla_put_failure;
3874
3875 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
3876 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
3877 PUT_SINFO(LLID, llid, u16);
3878 PUT_SINFO(PLID, plid, u16);
3879 PUT_SINFO(PLINK_STATE, plink_state, u8);
3880 PUT_SINFO_U64(RX_DURATION, rx_duration);
3881
3882 switch (rdev->wiphy.signal_type) {
3883 case CFG80211_SIGNAL_TYPE_MBM:
3884 PUT_SINFO(SIGNAL, signal, u8);
3885 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3886 break;
3887 default:
3888 break;
3889 }
3890 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3891 if (!nl80211_put_signal(msg, sinfo->chains,
3892 sinfo->chain_signal,
3893 NL80211_STA_INFO_CHAIN_SIGNAL))
3894 goto nla_put_failure;
3895 }
3896 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3897 if (!nl80211_put_signal(msg, sinfo->chains,
3898 sinfo->chain_signal_avg,
3899 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3900 goto nla_put_failure;
3901 }
3902 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3903 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3904 NL80211_STA_INFO_TX_BITRATE))
3905 goto nla_put_failure;
3906 }
3907 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3908 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3909 NL80211_STA_INFO_RX_BITRATE))
3910 goto nla_put_failure;
3911 }
3912
3913 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3914 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3915 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3916 PUT_SINFO(TX_FAILED, tx_failed, u32);
3917 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3918 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3919 PUT_SINFO(LOCAL_PM, local_pm, u32);
3920 PUT_SINFO(PEER_PM, peer_pm, u32);
3921 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3922
3923 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3924 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3925 if (!bss_param)
3926 goto nla_put_failure;
3927
3928 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3929 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3930 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3931 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3932 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3933 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3934 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3935 sinfo->bss_param.dtim_period) ||
3936 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3937 sinfo->bss_param.beacon_interval))
3938 goto nla_put_failure;
3939
3940 nla_nest_end(msg, bss_param);
3941 }
3942 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3943 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3944 sizeof(struct nl80211_sta_flag_update),
3945 &sinfo->sta_flags))
3946 goto nla_put_failure;
3947
3948 PUT_SINFO_U64(T_OFFSET, t_offset);
3949 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
3950 PUT_SINFO_U64(BEACON_RX, rx_beacon);
3951 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3952
3953 #undef PUT_SINFO
3954 #undef PUT_SINFO_U64
3955
3956 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3957 struct nlattr *tidsattr;
3958 int tid;
3959
3960 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3961 if (!tidsattr)
3962 goto nla_put_failure;
3963
3964 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3965 struct cfg80211_tid_stats *tidstats;
3966 struct nlattr *tidattr;
3967
3968 tidstats = &sinfo->pertid[tid];
3969
3970 if (!tidstats->filled)
3971 continue;
3972
3973 tidattr = nla_nest_start(msg, tid + 1);
3974 if (!tidattr)
3975 goto nla_put_failure;
3976
3977 #define PUT_TIDVAL_U64(attr, memb) do { \
3978 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3979 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
3980 tidstats->memb, NL80211_TID_STATS_PAD)) \
3981 goto nla_put_failure; \
3982 } while (0)
3983
3984 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
3985 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
3986 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
3987 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
3988
3989 #undef PUT_TIDVAL_U64
3990 nla_nest_end(msg, tidattr);
3991 }
3992
3993 nla_nest_end(msg, tidsattr);
3994 }
3995
3996 nla_nest_end(msg, sinfoattr);
3997
3998 if (sinfo->assoc_req_ies_len &&
3999 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4000 sinfo->assoc_req_ies))
4001 goto nla_put_failure;
4002
4003 genlmsg_end(msg, hdr);
4004 return 0;
4005
4006 nla_put_failure:
4007 genlmsg_cancel(msg, hdr);
4008 return -EMSGSIZE;
4009 }
4010
4011 static int nl80211_dump_station(struct sk_buff *skb,
4012 struct netlink_callback *cb)
4013 {
4014 struct station_info sinfo;
4015 struct cfg80211_registered_device *rdev;
4016 struct wireless_dev *wdev;
4017 u8 mac_addr[ETH_ALEN];
4018 int sta_idx = cb->args[2];
4019 int err;
4020
4021 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4022 if (err)
4023 return err;
4024
4025 if (!wdev->netdev) {
4026 err = -EINVAL;
4027 goto out_err;
4028 }
4029
4030 if (!rdev->ops->dump_station) {
4031 err = -EOPNOTSUPP;
4032 goto out_err;
4033 }
4034
4035 while (1) {
4036 memset(&sinfo, 0, sizeof(sinfo));
4037 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4038 mac_addr, &sinfo);
4039 if (err == -ENOENT)
4040 break;
4041 if (err)
4042 goto out_err;
4043
4044 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4045 NETLINK_CB(cb->skb).portid,
4046 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4047 rdev, wdev->netdev, mac_addr,
4048 &sinfo) < 0)
4049 goto out;
4050
4051 sta_idx++;
4052 }
4053
4054 out:
4055 cb->args[2] = sta_idx;
4056 err = skb->len;
4057 out_err:
4058 nl80211_finish_wdev_dump(rdev);
4059
4060 return err;
4061 }
4062
4063 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4064 {
4065 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4066 struct net_device *dev = info->user_ptr[1];
4067 struct station_info sinfo;
4068 struct sk_buff *msg;
4069 u8 *mac_addr = NULL;
4070 int err;
4071
4072 memset(&sinfo, 0, sizeof(sinfo));
4073
4074 if (!info->attrs[NL80211_ATTR_MAC])
4075 return -EINVAL;
4076
4077 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4078
4079 if (!rdev->ops->get_station)
4080 return -EOPNOTSUPP;
4081
4082 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4083 if (err)
4084 return err;
4085
4086 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4087 if (!msg)
4088 return -ENOMEM;
4089
4090 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4091 info->snd_portid, info->snd_seq, 0,
4092 rdev, dev, mac_addr, &sinfo) < 0) {
4093 nlmsg_free(msg);
4094 return -ENOBUFS;
4095 }
4096
4097 return genlmsg_reply(msg, info);
4098 }
4099
4100 int cfg80211_check_station_change(struct wiphy *wiphy,
4101 struct station_parameters *params,
4102 enum cfg80211_station_type statype)
4103 {
4104 if (params->listen_interval != -1 &&
4105 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4106 return -EINVAL;
4107
4108 if (params->support_p2p_ps != -1 &&
4109 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4110 return -EINVAL;
4111
4112 if (params->aid &&
4113 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4114 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4115 return -EINVAL;
4116
4117 /* When you run into this, adjust the code below for the new flag */
4118 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4119
4120 switch (statype) {
4121 case CFG80211_STA_MESH_PEER_KERNEL:
4122 case CFG80211_STA_MESH_PEER_USER:
4123 /*
4124 * No ignoring the TDLS flag here -- the userspace mesh
4125 * code doesn't have the bug of including TDLS in the
4126 * mask everywhere.
4127 */
4128 if (params->sta_flags_mask &
4129 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4130 BIT(NL80211_STA_FLAG_MFP) |
4131 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4132 return -EINVAL;
4133 break;
4134 case CFG80211_STA_TDLS_PEER_SETUP:
4135 case CFG80211_STA_TDLS_PEER_ACTIVE:
4136 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4137 return -EINVAL;
4138 /* ignore since it can't change */
4139 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4140 break;
4141 default:
4142 /* disallow mesh-specific things */
4143 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4144 return -EINVAL;
4145 if (params->local_pm)
4146 return -EINVAL;
4147 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4148 return -EINVAL;
4149 }
4150
4151 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4152 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4153 /* TDLS can't be set, ... */
4154 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4155 return -EINVAL;
4156 /*
4157 * ... but don't bother the driver with it. This works around
4158 * a hostapd/wpa_supplicant issue -- it always includes the
4159 * TLDS_PEER flag in the mask even for AP mode.
4160 */
4161 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4162 }
4163
4164 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4165 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4166 /* reject other things that can't change */
4167 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4168 return -EINVAL;
4169 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4170 return -EINVAL;
4171 if (params->supported_rates)
4172 return -EINVAL;
4173 if (params->ext_capab || params->ht_capa || params->vht_capa)
4174 return -EINVAL;
4175 }
4176
4177 if (statype != CFG80211_STA_AP_CLIENT &&
4178 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4179 if (params->vlan)
4180 return -EINVAL;
4181 }
4182
4183 switch (statype) {
4184 case CFG80211_STA_AP_MLME_CLIENT:
4185 /* Use this only for authorizing/unauthorizing a station */
4186 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4187 return -EOPNOTSUPP;
4188 break;
4189 case CFG80211_STA_AP_CLIENT:
4190 case CFG80211_STA_AP_CLIENT_UNASSOC:
4191 /* accept only the listed bits */
4192 if (params->sta_flags_mask &
4193 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4194 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4195 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4196 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4197 BIT(NL80211_STA_FLAG_WME) |
4198 BIT(NL80211_STA_FLAG_MFP)))
4199 return -EINVAL;
4200
4201 /* but authenticated/associated only if driver handles it */
4202 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4203 params->sta_flags_mask &
4204 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4205 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4206 return -EINVAL;
4207 break;
4208 case CFG80211_STA_IBSS:
4209 case CFG80211_STA_AP_STA:
4210 /* reject any changes other than AUTHORIZED */
4211 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4212 return -EINVAL;
4213 break;
4214 case CFG80211_STA_TDLS_PEER_SETUP:
4215 /* reject any changes other than AUTHORIZED or WME */
4216 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4217 BIT(NL80211_STA_FLAG_WME)))
4218 return -EINVAL;
4219 /* force (at least) rates when authorizing */
4220 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4221 !params->supported_rates)
4222 return -EINVAL;
4223 break;
4224 case CFG80211_STA_TDLS_PEER_ACTIVE:
4225 /* reject any changes */
4226 return -EINVAL;
4227 case CFG80211_STA_MESH_PEER_KERNEL:
4228 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4229 return -EINVAL;
4230 break;
4231 case CFG80211_STA_MESH_PEER_USER:
4232 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4233 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4234 return -EINVAL;
4235 break;
4236 }
4237
4238 return 0;
4239 }
4240 EXPORT_SYMBOL(cfg80211_check_station_change);
4241
4242 /*
4243 * Get vlan interface making sure it is running and on the right wiphy.
4244 */
4245 static struct net_device *get_vlan(struct genl_info *info,
4246 struct cfg80211_registered_device *rdev)
4247 {
4248 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4249 struct net_device *v;
4250 int ret;
4251
4252 if (!vlanattr)
4253 return NULL;
4254
4255 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4256 if (!v)
4257 return ERR_PTR(-ENODEV);
4258
4259 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4260 ret = -EINVAL;
4261 goto error;
4262 }
4263
4264 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4265 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4266 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4267 ret = -EINVAL;
4268 goto error;
4269 }
4270
4271 if (!netif_running(v)) {
4272 ret = -ENETDOWN;
4273 goto error;
4274 }
4275
4276 return v;
4277 error:
4278 dev_put(v);
4279 return ERR_PTR(ret);
4280 }
4281
4282 static const struct nla_policy
4283 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4284 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4285 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4286 };
4287
4288 static int nl80211_parse_sta_wme(struct genl_info *info,
4289 struct station_parameters *params)
4290 {
4291 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4292 struct nlattr *nla;
4293 int err;
4294
4295 /* parse WME attributes if present */
4296 if (!info->attrs[NL80211_ATTR_STA_WME])
4297 return 0;
4298
4299 nla = info->attrs[NL80211_ATTR_STA_WME];
4300 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4301 nl80211_sta_wme_policy);
4302 if (err)
4303 return err;
4304
4305 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4306 params->uapsd_queues = nla_get_u8(
4307 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4308 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4309 return -EINVAL;
4310
4311 if (tb[NL80211_STA_WME_MAX_SP])
4312 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4313
4314 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4315 return -EINVAL;
4316
4317 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4318
4319 return 0;
4320 }
4321
4322 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4323 struct station_parameters *params)
4324 {
4325 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4326 params->supported_channels =
4327 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4328 params->supported_channels_len =
4329 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4330 /*
4331 * Need to include at least one (first channel, number of
4332 * channels) tuple for each subband, and must have proper
4333 * tuples for the rest of the data as well.
4334 */
4335 if (params->supported_channels_len < 2)
4336 return -EINVAL;
4337 if (params->supported_channels_len % 2)
4338 return -EINVAL;
4339 }
4340
4341 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4342 params->supported_oper_classes =
4343 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4344 params->supported_oper_classes_len =
4345 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4346 /*
4347 * The value of the Length field of the Supported Operating
4348 * Classes element is between 2 and 253.
4349 */
4350 if (params->supported_oper_classes_len < 2 ||
4351 params->supported_oper_classes_len > 253)
4352 return -EINVAL;
4353 }
4354 return 0;
4355 }
4356
4357 static int nl80211_set_station_tdls(struct genl_info *info,
4358 struct station_parameters *params)
4359 {
4360 int err;
4361 /* Dummy STA entry gets updated once the peer capabilities are known */
4362 if (info->attrs[NL80211_ATTR_PEER_AID])
4363 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4364 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4365 params->ht_capa =
4366 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4367 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4368 params->vht_capa =
4369 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4370
4371 err = nl80211_parse_sta_channel_info(info, params);
4372 if (err)
4373 return err;
4374
4375 return nl80211_parse_sta_wme(info, params);
4376 }
4377
4378 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4379 {
4380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4381 struct net_device *dev = info->user_ptr[1];
4382 struct station_parameters params;
4383 u8 *mac_addr;
4384 int err;
4385
4386 memset(&params, 0, sizeof(params));
4387
4388 if (!rdev->ops->change_station)
4389 return -EOPNOTSUPP;
4390
4391 /*
4392 * AID and listen_interval properties can be set only for unassociated
4393 * station. Include these parameters here and will check them in
4394 * cfg80211_check_station_change().
4395 */
4396 if (info->attrs[NL80211_ATTR_STA_AID])
4397 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4398
4399 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4400 params.listen_interval =
4401 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4402 else
4403 params.listen_interval = -1;
4404
4405 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4406 u8 tmp;
4407
4408 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4409 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4410 return -EINVAL;
4411
4412 params.support_p2p_ps = tmp;
4413 } else {
4414 params.support_p2p_ps = -1;
4415 }
4416
4417 if (!info->attrs[NL80211_ATTR_MAC])
4418 return -EINVAL;
4419
4420 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4421
4422 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4423 params.supported_rates =
4424 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4425 params.supported_rates_len =
4426 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4427 }
4428
4429 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4430 params.capability =
4431 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4432 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4433 }
4434
4435 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4436 params.ext_capab =
4437 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4438 params.ext_capab_len =
4439 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4440 }
4441
4442 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4443 return -EINVAL;
4444
4445 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4446 params.plink_action =
4447 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4448 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4449 return -EINVAL;
4450 }
4451
4452 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4453 params.plink_state =
4454 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4455 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4456 return -EINVAL;
4457 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4458 params.peer_aid = nla_get_u16(
4459 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4460 if (params.peer_aid > IEEE80211_MAX_AID)
4461 return -EINVAL;
4462 }
4463 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4464 }
4465
4466 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4467 enum nl80211_mesh_power_mode pm = nla_get_u32(
4468 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4469
4470 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4471 pm > NL80211_MESH_POWER_MAX)
4472 return -EINVAL;
4473
4474 params.local_pm = pm;
4475 }
4476
4477 /* Include parameters for TDLS peer (will check later) */
4478 err = nl80211_set_station_tdls(info, &params);
4479 if (err)
4480 return err;
4481
4482 params.vlan = get_vlan(info, rdev);
4483 if (IS_ERR(params.vlan))
4484 return PTR_ERR(params.vlan);
4485
4486 switch (dev->ieee80211_ptr->iftype) {
4487 case NL80211_IFTYPE_AP:
4488 case NL80211_IFTYPE_AP_VLAN:
4489 case NL80211_IFTYPE_P2P_GO:
4490 case NL80211_IFTYPE_P2P_CLIENT:
4491 case NL80211_IFTYPE_STATION:
4492 case NL80211_IFTYPE_ADHOC:
4493 case NL80211_IFTYPE_MESH_POINT:
4494 break;
4495 default:
4496 err = -EOPNOTSUPP;
4497 goto out_put_vlan;
4498 }
4499
4500 /* driver will call cfg80211_check_station_change() */
4501 err = rdev_change_station(rdev, dev, mac_addr, &params);
4502
4503 out_put_vlan:
4504 if (params.vlan)
4505 dev_put(params.vlan);
4506
4507 return err;
4508 }
4509
4510 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4511 {
4512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4513 int err;
4514 struct net_device *dev = info->user_ptr[1];
4515 struct station_parameters params;
4516 u8 *mac_addr = NULL;
4517 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4518 BIT(NL80211_STA_FLAG_ASSOCIATED);
4519
4520 memset(&params, 0, sizeof(params));
4521
4522 if (!rdev->ops->add_station)
4523 return -EOPNOTSUPP;
4524
4525 if (!info->attrs[NL80211_ATTR_MAC])
4526 return -EINVAL;
4527
4528 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4529 return -EINVAL;
4530
4531 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4532 return -EINVAL;
4533
4534 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4535 !info->attrs[NL80211_ATTR_PEER_AID])
4536 return -EINVAL;
4537
4538 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4539 params.supported_rates =
4540 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4541 params.supported_rates_len =
4542 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4543 params.listen_interval =
4544 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4545
4546 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4547 u8 tmp;
4548
4549 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4550 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4551 return -EINVAL;
4552
4553 params.support_p2p_ps = tmp;
4554 } else {
4555 /*
4556 * if not specified, assume it's supported for P2P GO interface,
4557 * and is NOT supported for AP interface
4558 */
4559 params.support_p2p_ps =
4560 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4561 }
4562
4563 if (info->attrs[NL80211_ATTR_PEER_AID])
4564 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4565 else
4566 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4567 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4568 return -EINVAL;
4569
4570 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4571 params.capability =
4572 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4573 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4574 }
4575
4576 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4577 params.ext_capab =
4578 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4579 params.ext_capab_len =
4580 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4581 }
4582
4583 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4584 params.ht_capa =
4585 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4586
4587 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4588 params.vht_capa =
4589 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4590
4591 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4592 params.opmode_notif_used = true;
4593 params.opmode_notif =
4594 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4595 }
4596
4597 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4598 params.plink_action =
4599 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4600 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4601 return -EINVAL;
4602 }
4603
4604 err = nl80211_parse_sta_channel_info(info, &params);
4605 if (err)
4606 return err;
4607
4608 err = nl80211_parse_sta_wme(info, &params);
4609 if (err)
4610 return err;
4611
4612 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4613 return -EINVAL;
4614
4615 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4616 * as userspace might just pass through the capabilities from the IEs
4617 * directly, rather than enforcing this restriction and returning an
4618 * error in this case.
4619 */
4620 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4621 params.ht_capa = NULL;
4622 params.vht_capa = NULL;
4623 }
4624
4625 /* When you run into this, adjust the code below for the new flag */
4626 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4627
4628 switch (dev->ieee80211_ptr->iftype) {
4629 case NL80211_IFTYPE_AP:
4630 case NL80211_IFTYPE_AP_VLAN:
4631 case NL80211_IFTYPE_P2P_GO:
4632 /* ignore WME attributes if iface/sta is not capable */
4633 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4634 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4635 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4636
4637 /* TDLS peers cannot be added */
4638 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4639 info->attrs[NL80211_ATTR_PEER_AID])
4640 return -EINVAL;
4641 /* but don't bother the driver with it */
4642 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4643
4644 /* allow authenticated/associated only if driver handles it */
4645 if (!(rdev->wiphy.features &
4646 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4647 params.sta_flags_mask & auth_assoc)
4648 return -EINVAL;
4649
4650 /* Older userspace, or userspace wanting to be compatible with
4651 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
4652 * and assoc flags in the mask, but assumes the station will be
4653 * added as associated anyway since this was the required driver
4654 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
4655 * introduced.
4656 * In order to not bother drivers with this quirk in the API
4657 * set the flags in both the mask and set for new stations in
4658 * this case.
4659 */
4660 if (!(params.sta_flags_mask & auth_assoc)) {
4661 params.sta_flags_mask |= auth_assoc;
4662 params.sta_flags_set |= auth_assoc;
4663 }
4664
4665 /* must be last in here for error handling */
4666 params.vlan = get_vlan(info, rdev);
4667 if (IS_ERR(params.vlan))
4668 return PTR_ERR(params.vlan);
4669 break;
4670 case NL80211_IFTYPE_MESH_POINT:
4671 /* ignore uAPSD data */
4672 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4673
4674 /* associated is disallowed */
4675 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4676 return -EINVAL;
4677 /* TDLS peers cannot be added */
4678 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4679 info->attrs[NL80211_ATTR_PEER_AID])
4680 return -EINVAL;
4681 break;
4682 case NL80211_IFTYPE_STATION:
4683 case NL80211_IFTYPE_P2P_CLIENT:
4684 /* ignore uAPSD data */
4685 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4686
4687 /* these are disallowed */
4688 if (params.sta_flags_mask &
4689 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4690 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4691 return -EINVAL;
4692 /* Only TDLS peers can be added */
4693 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4694 return -EINVAL;
4695 /* Can only add if TDLS ... */
4696 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4697 return -EOPNOTSUPP;
4698 /* ... with external setup is supported */
4699 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4700 return -EOPNOTSUPP;
4701 /*
4702 * Older wpa_supplicant versions always mark the TDLS peer
4703 * as authorized, but it shouldn't yet be.
4704 */
4705 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4706 break;
4707 default:
4708 return -EOPNOTSUPP;
4709 }
4710
4711 /* be aware of params.vlan when changing code here */
4712
4713 err = rdev_add_station(rdev, dev, mac_addr, &params);
4714
4715 if (params.vlan)
4716 dev_put(params.vlan);
4717 return err;
4718 }
4719
4720 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4721 {
4722 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4723 struct net_device *dev = info->user_ptr[1];
4724 struct station_del_parameters params;
4725
4726 memset(&params, 0, sizeof(params));
4727
4728 if (info->attrs[NL80211_ATTR_MAC])
4729 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4730
4731 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4732 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4733 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4734 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4735 return -EINVAL;
4736
4737 if (!rdev->ops->del_station)
4738 return -EOPNOTSUPP;
4739
4740 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4741 params.subtype =
4742 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4743 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4744 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4745 return -EINVAL;
4746 } else {
4747 /* Default to Deauthentication frame */
4748 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4749 }
4750
4751 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4752 params.reason_code =
4753 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4754 if (params.reason_code == 0)
4755 return -EINVAL; /* 0 is reserved */
4756 } else {
4757 /* Default to reason code 2 */
4758 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4759 }
4760
4761 return rdev_del_station(rdev, dev, &params);
4762 }
4763
4764 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4765 int flags, struct net_device *dev,
4766 u8 *dst, u8 *next_hop,
4767 struct mpath_info *pinfo)
4768 {
4769 void *hdr;
4770 struct nlattr *pinfoattr;
4771
4772 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4773 if (!hdr)
4774 return -1;
4775
4776 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4777 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4778 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4779 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4780 goto nla_put_failure;
4781
4782 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4783 if (!pinfoattr)
4784 goto nla_put_failure;
4785 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4786 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4787 pinfo->frame_qlen))
4788 goto nla_put_failure;
4789 if (((pinfo->filled & MPATH_INFO_SN) &&
4790 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4791 ((pinfo->filled & MPATH_INFO_METRIC) &&
4792 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4793 pinfo->metric)) ||
4794 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4795 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4796 pinfo->exptime)) ||
4797 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4798 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4799 pinfo->flags)) ||
4800 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4801 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4802 pinfo->discovery_timeout)) ||
4803 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4804 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4805 pinfo->discovery_retries)))
4806 goto nla_put_failure;
4807
4808 nla_nest_end(msg, pinfoattr);
4809
4810 genlmsg_end(msg, hdr);
4811 return 0;
4812
4813 nla_put_failure:
4814 genlmsg_cancel(msg, hdr);
4815 return -EMSGSIZE;
4816 }
4817
4818 static int nl80211_dump_mpath(struct sk_buff *skb,
4819 struct netlink_callback *cb)
4820 {
4821 struct mpath_info pinfo;
4822 struct cfg80211_registered_device *rdev;
4823 struct wireless_dev *wdev;
4824 u8 dst[ETH_ALEN];
4825 u8 next_hop[ETH_ALEN];
4826 int path_idx = cb->args[2];
4827 int err;
4828
4829 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4830 if (err)
4831 return err;
4832
4833 if (!rdev->ops->dump_mpath) {
4834 err = -EOPNOTSUPP;
4835 goto out_err;
4836 }
4837
4838 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4839 err = -EOPNOTSUPP;
4840 goto out_err;
4841 }
4842
4843 while (1) {
4844 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4845 next_hop, &pinfo);
4846 if (err == -ENOENT)
4847 break;
4848 if (err)
4849 goto out_err;
4850
4851 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4852 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4853 wdev->netdev, dst, next_hop,
4854 &pinfo) < 0)
4855 goto out;
4856
4857 path_idx++;
4858 }
4859
4860 out:
4861 cb->args[2] = path_idx;
4862 err = skb->len;
4863 out_err:
4864 nl80211_finish_wdev_dump(rdev);
4865 return err;
4866 }
4867
4868 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4869 {
4870 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4871 int err;
4872 struct net_device *dev = info->user_ptr[1];
4873 struct mpath_info pinfo;
4874 struct sk_buff *msg;
4875 u8 *dst = NULL;
4876 u8 next_hop[ETH_ALEN];
4877
4878 memset(&pinfo, 0, sizeof(pinfo));
4879
4880 if (!info->attrs[NL80211_ATTR_MAC])
4881 return -EINVAL;
4882
4883 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4884
4885 if (!rdev->ops->get_mpath)
4886 return -EOPNOTSUPP;
4887
4888 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4889 return -EOPNOTSUPP;
4890
4891 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4892 if (err)
4893 return err;
4894
4895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4896 if (!msg)
4897 return -ENOMEM;
4898
4899 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4900 dev, dst, next_hop, &pinfo) < 0) {
4901 nlmsg_free(msg);
4902 return -ENOBUFS;
4903 }
4904
4905 return genlmsg_reply(msg, info);
4906 }
4907
4908 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4909 {
4910 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4911 struct net_device *dev = info->user_ptr[1];
4912 u8 *dst = NULL;
4913 u8 *next_hop = NULL;
4914
4915 if (!info->attrs[NL80211_ATTR_MAC])
4916 return -EINVAL;
4917
4918 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4919 return -EINVAL;
4920
4921 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4922 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4923
4924 if (!rdev->ops->change_mpath)
4925 return -EOPNOTSUPP;
4926
4927 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4928 return -EOPNOTSUPP;
4929
4930 return rdev_change_mpath(rdev, dev, dst, next_hop);
4931 }
4932
4933 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4934 {
4935 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4936 struct net_device *dev = info->user_ptr[1];
4937 u8 *dst = NULL;
4938 u8 *next_hop = NULL;
4939
4940 if (!info->attrs[NL80211_ATTR_MAC])
4941 return -EINVAL;
4942
4943 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4944 return -EINVAL;
4945
4946 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4947 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4948
4949 if (!rdev->ops->add_mpath)
4950 return -EOPNOTSUPP;
4951
4952 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4953 return -EOPNOTSUPP;
4954
4955 return rdev_add_mpath(rdev, dev, dst, next_hop);
4956 }
4957
4958 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4959 {
4960 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4961 struct net_device *dev = info->user_ptr[1];
4962 u8 *dst = NULL;
4963
4964 if (info->attrs[NL80211_ATTR_MAC])
4965 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4966
4967 if (!rdev->ops->del_mpath)
4968 return -EOPNOTSUPP;
4969
4970 return rdev_del_mpath(rdev, dev, dst);
4971 }
4972
4973 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4974 {
4975 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4976 int err;
4977 struct net_device *dev = info->user_ptr[1];
4978 struct mpath_info pinfo;
4979 struct sk_buff *msg;
4980 u8 *dst = NULL;
4981 u8 mpp[ETH_ALEN];
4982
4983 memset(&pinfo, 0, sizeof(pinfo));
4984
4985 if (!info->attrs[NL80211_ATTR_MAC])
4986 return -EINVAL;
4987
4988 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4989
4990 if (!rdev->ops->get_mpp)
4991 return -EOPNOTSUPP;
4992
4993 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4994 return -EOPNOTSUPP;
4995
4996 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4997 if (err)
4998 return err;
4999
5000 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5001 if (!msg)
5002 return -ENOMEM;
5003
5004 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5005 dev, dst, mpp, &pinfo) < 0) {
5006 nlmsg_free(msg);
5007 return -ENOBUFS;
5008 }
5009
5010 return genlmsg_reply(msg, info);
5011 }
5012
5013 static int nl80211_dump_mpp(struct sk_buff *skb,
5014 struct netlink_callback *cb)
5015 {
5016 struct mpath_info pinfo;
5017 struct cfg80211_registered_device *rdev;
5018 struct wireless_dev *wdev;
5019 u8 dst[ETH_ALEN];
5020 u8 mpp[ETH_ALEN];
5021 int path_idx = cb->args[2];
5022 int err;
5023
5024 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5025 if (err)
5026 return err;
5027
5028 if (!rdev->ops->dump_mpp) {
5029 err = -EOPNOTSUPP;
5030 goto out_err;
5031 }
5032
5033 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5034 err = -EOPNOTSUPP;
5035 goto out_err;
5036 }
5037
5038 while (1) {
5039 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5040 mpp, &pinfo);
5041 if (err == -ENOENT)
5042 break;
5043 if (err)
5044 goto out_err;
5045
5046 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5047 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5048 wdev->netdev, dst, mpp,
5049 &pinfo) < 0)
5050 goto out;
5051
5052 path_idx++;
5053 }
5054
5055 out:
5056 cb->args[2] = path_idx;
5057 err = skb->len;
5058 out_err:
5059 nl80211_finish_wdev_dump(rdev);
5060 return err;
5061 }
5062
5063 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5064 {
5065 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5066 struct net_device *dev = info->user_ptr[1];
5067 struct wireless_dev *wdev = dev->ieee80211_ptr;
5068 struct bss_parameters params;
5069 int err;
5070
5071 memset(&params, 0, sizeof(params));
5072 /* default to not changing parameters */
5073 params.use_cts_prot = -1;
5074 params.use_short_preamble = -1;
5075 params.use_short_slot_time = -1;
5076 params.ap_isolate = -1;
5077 params.ht_opmode = -1;
5078 params.p2p_ctwindow = -1;
5079 params.p2p_opp_ps = -1;
5080
5081 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5082 params.use_cts_prot =
5083 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5084 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5085 params.use_short_preamble =
5086 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5087 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5088 params.use_short_slot_time =
5089 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5090 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5091 params.basic_rates =
5092 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5093 params.basic_rates_len =
5094 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5095 }
5096 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5097 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5098 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5099 params.ht_opmode =
5100 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5101
5102 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5103 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5104 return -EINVAL;
5105 params.p2p_ctwindow =
5106 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5107 if (params.p2p_ctwindow < 0)
5108 return -EINVAL;
5109 if (params.p2p_ctwindow != 0 &&
5110 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5111 return -EINVAL;
5112 }
5113
5114 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5115 u8 tmp;
5116
5117 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5118 return -EINVAL;
5119 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5120 if (tmp > 1)
5121 return -EINVAL;
5122 params.p2p_opp_ps = tmp;
5123 if (params.p2p_opp_ps &&
5124 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5125 return -EINVAL;
5126 }
5127
5128 if (!rdev->ops->change_bss)
5129 return -EOPNOTSUPP;
5130
5131 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5132 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5133 return -EOPNOTSUPP;
5134
5135 wdev_lock(wdev);
5136 err = rdev_change_bss(rdev, dev, &params);
5137 wdev_unlock(wdev);
5138
5139 return err;
5140 }
5141
5142 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5143 {
5144 char *data = NULL;
5145 bool is_indoor;
5146 enum nl80211_user_reg_hint_type user_reg_hint_type;
5147 u32 owner_nlportid;
5148
5149 /*
5150 * You should only get this when cfg80211 hasn't yet initialized
5151 * completely when built-in to the kernel right between the time
5152 * window between nl80211_init() and regulatory_init(), if that is
5153 * even possible.
5154 */
5155 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5156 return -EINPROGRESS;
5157
5158 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5159 user_reg_hint_type =
5160 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5161 else
5162 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5163
5164 switch (user_reg_hint_type) {
5165 case NL80211_USER_REG_HINT_USER:
5166 case NL80211_USER_REG_HINT_CELL_BASE:
5167 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5168 return -EINVAL;
5169
5170 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5171 return regulatory_hint_user(data, user_reg_hint_type);
5172 case NL80211_USER_REG_HINT_INDOOR:
5173 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5174 owner_nlportid = info->snd_portid;
5175 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5176 } else {
5177 owner_nlportid = 0;
5178 is_indoor = true;
5179 }
5180
5181 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5182 default:
5183 return -EINVAL;
5184 }
5185 }
5186
5187 static int nl80211_get_mesh_config(struct sk_buff *skb,
5188 struct genl_info *info)
5189 {
5190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5191 struct net_device *dev = info->user_ptr[1];
5192 struct wireless_dev *wdev = dev->ieee80211_ptr;
5193 struct mesh_config cur_params;
5194 int err = 0;
5195 void *hdr;
5196 struct nlattr *pinfoattr;
5197 struct sk_buff *msg;
5198
5199 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5200 return -EOPNOTSUPP;
5201
5202 if (!rdev->ops->get_mesh_config)
5203 return -EOPNOTSUPP;
5204
5205 wdev_lock(wdev);
5206 /* If not connected, get default parameters */
5207 if (!wdev->mesh_id_len)
5208 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5209 else
5210 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5211 wdev_unlock(wdev);
5212
5213 if (err)
5214 return err;
5215
5216 /* Draw up a netlink message to send back */
5217 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5218 if (!msg)
5219 return -ENOMEM;
5220 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5221 NL80211_CMD_GET_MESH_CONFIG);
5222 if (!hdr)
5223 goto out;
5224 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5225 if (!pinfoattr)
5226 goto nla_put_failure;
5227 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5228 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5229 cur_params.dot11MeshRetryTimeout) ||
5230 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5231 cur_params.dot11MeshConfirmTimeout) ||
5232 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5233 cur_params.dot11MeshHoldingTimeout) ||
5234 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5235 cur_params.dot11MeshMaxPeerLinks) ||
5236 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5237 cur_params.dot11MeshMaxRetries) ||
5238 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5239 cur_params.dot11MeshTTL) ||
5240 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5241 cur_params.element_ttl) ||
5242 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5243 cur_params.auto_open_plinks) ||
5244 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5245 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5246 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5247 cur_params.dot11MeshHWMPmaxPREQretries) ||
5248 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5249 cur_params.path_refresh_time) ||
5250 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5251 cur_params.min_discovery_timeout) ||
5252 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5253 cur_params.dot11MeshHWMPactivePathTimeout) ||
5254 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5255 cur_params.dot11MeshHWMPpreqMinInterval) ||
5256 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5257 cur_params.dot11MeshHWMPperrMinInterval) ||
5258 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5259 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5260 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5261 cur_params.dot11MeshHWMPRootMode) ||
5262 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5263 cur_params.dot11MeshHWMPRannInterval) ||
5264 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5265 cur_params.dot11MeshGateAnnouncementProtocol) ||
5266 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5267 cur_params.dot11MeshForwarding) ||
5268 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5269 cur_params.rssi_threshold) ||
5270 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5271 cur_params.ht_opmode) ||
5272 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5273 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5274 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5275 cur_params.dot11MeshHWMProotInterval) ||
5276 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5277 cur_params.dot11MeshHWMPconfirmationInterval) ||
5278 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5279 cur_params.power_mode) ||
5280 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5281 cur_params.dot11MeshAwakeWindowDuration) ||
5282 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5283 cur_params.plink_timeout))
5284 goto nla_put_failure;
5285 nla_nest_end(msg, pinfoattr);
5286 genlmsg_end(msg, hdr);
5287 return genlmsg_reply(msg, info);
5288
5289 nla_put_failure:
5290 genlmsg_cancel(msg, hdr);
5291 out:
5292 nlmsg_free(msg);
5293 return -ENOBUFS;
5294 }
5295
5296 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5297 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5298 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5299 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5300 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5301 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5302 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5303 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5304 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5305 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5306 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5307 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5308 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5309 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5310 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5311 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5312 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5313 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5314 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5315 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5316 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5317 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5318 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5319 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5320 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5321 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5322 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5323 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5324 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5325 };
5326
5327 static const struct nla_policy
5328 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5329 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5330 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5331 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5332 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5333 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5334 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5335 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5336 .len = IEEE80211_MAX_DATA_LEN },
5337 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5338 };
5339
5340 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5341 {
5342 u8 val = nla_get_u8(nla);
5343 if (val < min || val > max)
5344 return -EINVAL;
5345 *out = val;
5346 return 0;
5347 }
5348
5349 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5350 {
5351 u8 val = nla_get_u8(nla);
5352 if (val < min || val > max)
5353 return -EINVAL;
5354 *out = val;
5355 return 0;
5356 }
5357
5358 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5359 {
5360 u16 val = nla_get_u16(nla);
5361 if (val < min || val > max)
5362 return -EINVAL;
5363 *out = val;
5364 return 0;
5365 }
5366
5367 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5368 {
5369 u32 val = nla_get_u32(nla);
5370 if (val < min || val > max)
5371 return -EINVAL;
5372 *out = val;
5373 return 0;
5374 }
5375
5376 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5377 {
5378 s32 val = nla_get_s32(nla);
5379 if (val < min || val > max)
5380 return -EINVAL;
5381 *out = val;
5382 return 0;
5383 }
5384
5385 static int nl80211_check_power_mode(const struct nlattr *nla,
5386 enum nl80211_mesh_power_mode min,
5387 enum nl80211_mesh_power_mode max,
5388 enum nl80211_mesh_power_mode *out)
5389 {
5390 u32 val = nla_get_u32(nla);
5391 if (val < min || val > max)
5392 return -EINVAL;
5393 *out = val;
5394 return 0;
5395 }
5396
5397 static int nl80211_parse_mesh_config(struct genl_info *info,
5398 struct mesh_config *cfg,
5399 u32 *mask_out)
5400 {
5401 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5402 u32 mask = 0;
5403 u16 ht_opmode;
5404
5405 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5406 do { \
5407 if (tb[attr]) { \
5408 if (fn(tb[attr], min, max, &cfg->param)) \
5409 return -EINVAL; \
5410 mask |= (1 << (attr - 1)); \
5411 } \
5412 } while (0)
5413
5414 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5415 return -EINVAL;
5416 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5417 info->attrs[NL80211_ATTR_MESH_CONFIG],
5418 nl80211_meshconf_params_policy))
5419 return -EINVAL;
5420
5421 /* This makes sure that there aren't more than 32 mesh config
5422 * parameters (otherwise our bitfield scheme would not work.) */
5423 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5424
5425 /* Fill in the params struct */
5426 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5427 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5428 nl80211_check_u16);
5429 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5430 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5431 nl80211_check_u16);
5432 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5433 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5434 nl80211_check_u16);
5435 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5436 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5437 nl80211_check_u16);
5438 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5439 mask, NL80211_MESHCONF_MAX_RETRIES,
5440 nl80211_check_u8);
5441 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5442 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5443 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5444 mask, NL80211_MESHCONF_ELEMENT_TTL,
5445 nl80211_check_u8);
5446 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5447 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5448 nl80211_check_bool);
5449 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5450 1, 255, mask,
5451 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5452 nl80211_check_u32);
5453 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5454 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5455 nl80211_check_u8);
5456 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5457 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5458 nl80211_check_u32);
5459 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5460 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5461 nl80211_check_u16);
5462 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5463 1, 65535, mask,
5464 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5465 nl80211_check_u32);
5466 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5467 1, 65535, mask,
5468 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5469 nl80211_check_u16);
5470 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5471 1, 65535, mask,
5472 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5473 nl80211_check_u16);
5474 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5475 dot11MeshHWMPnetDiameterTraversalTime,
5476 1, 65535, mask,
5477 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5478 nl80211_check_u16);
5479 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5480 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5481 nl80211_check_u8);
5482 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5483 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5484 nl80211_check_u16);
5485 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5486 dot11MeshGateAnnouncementProtocol, 0, 1,
5487 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5488 nl80211_check_bool);
5489 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5490 mask, NL80211_MESHCONF_FORWARDING,
5491 nl80211_check_bool);
5492 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5493 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5494 nl80211_check_s32);
5495 /*
5496 * Check HT operation mode based on
5497 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5498 */
5499 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5500 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5501
5502 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5503 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5504 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5505 return -EINVAL;
5506
5507 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5508 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5509 return -EINVAL;
5510
5511 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5512 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5513 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5514 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5515 return -EINVAL;
5516 break;
5517 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5518 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5519 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5520 return -EINVAL;
5521 break;
5522 }
5523 cfg->ht_opmode = ht_opmode;
5524 }
5525 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5526 1, 65535, mask,
5527 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5528 nl80211_check_u32);
5529 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5530 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5531 nl80211_check_u16);
5532 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5533 dot11MeshHWMPconfirmationInterval,
5534 1, 65535, mask,
5535 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5536 nl80211_check_u16);
5537 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5538 NL80211_MESH_POWER_ACTIVE,
5539 NL80211_MESH_POWER_MAX,
5540 mask, NL80211_MESHCONF_POWER_MODE,
5541 nl80211_check_power_mode);
5542 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5543 0, 65535, mask,
5544 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5545 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5546 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5547 nl80211_check_u32);
5548 if (mask_out)
5549 *mask_out = mask;
5550
5551 return 0;
5552
5553 #undef FILL_IN_MESH_PARAM_IF_SET
5554 }
5555
5556 static int nl80211_parse_mesh_setup(struct genl_info *info,
5557 struct mesh_setup *setup)
5558 {
5559 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5560 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5561
5562 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5563 return -EINVAL;
5564 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5565 info->attrs[NL80211_ATTR_MESH_SETUP],
5566 nl80211_mesh_setup_params_policy))
5567 return -EINVAL;
5568
5569 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5570 setup->sync_method =
5571 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5572 IEEE80211_SYNC_METHOD_VENDOR :
5573 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5574
5575 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5576 setup->path_sel_proto =
5577 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5578 IEEE80211_PATH_PROTOCOL_VENDOR :
5579 IEEE80211_PATH_PROTOCOL_HWMP;
5580
5581 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5582 setup->path_metric =
5583 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5584 IEEE80211_PATH_METRIC_VENDOR :
5585 IEEE80211_PATH_METRIC_AIRTIME;
5586
5587 if (tb[NL80211_MESH_SETUP_IE]) {
5588 struct nlattr *ieattr =
5589 tb[NL80211_MESH_SETUP_IE];
5590 if (!is_valid_ie_attr(ieattr))
5591 return -EINVAL;
5592 setup->ie = nla_data(ieattr);
5593 setup->ie_len = nla_len(ieattr);
5594 }
5595 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5596 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5597 return -EINVAL;
5598 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5599 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5600 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5601 if (setup->is_secure)
5602 setup->user_mpm = true;
5603
5604 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5605 if (!setup->user_mpm)
5606 return -EINVAL;
5607 setup->auth_id =
5608 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5609 }
5610
5611 return 0;
5612 }
5613
5614 static int nl80211_update_mesh_config(struct sk_buff *skb,
5615 struct genl_info *info)
5616 {
5617 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5618 struct net_device *dev = info->user_ptr[1];
5619 struct wireless_dev *wdev = dev->ieee80211_ptr;
5620 struct mesh_config cfg;
5621 u32 mask;
5622 int err;
5623
5624 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5625 return -EOPNOTSUPP;
5626
5627 if (!rdev->ops->update_mesh_config)
5628 return -EOPNOTSUPP;
5629
5630 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5631 if (err)
5632 return err;
5633
5634 wdev_lock(wdev);
5635 if (!wdev->mesh_id_len)
5636 err = -ENOLINK;
5637
5638 if (!err)
5639 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5640
5641 wdev_unlock(wdev);
5642
5643 return err;
5644 }
5645
5646 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5647 struct sk_buff *msg)
5648 {
5649 struct nlattr *nl_reg_rules;
5650 unsigned int i;
5651
5652 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5653 (regdom->dfs_region &&
5654 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5655 goto nla_put_failure;
5656
5657 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5658 if (!nl_reg_rules)
5659 goto nla_put_failure;
5660
5661 for (i = 0; i < regdom->n_reg_rules; i++) {
5662 struct nlattr *nl_reg_rule;
5663 const struct ieee80211_reg_rule *reg_rule;
5664 const struct ieee80211_freq_range *freq_range;
5665 const struct ieee80211_power_rule *power_rule;
5666 unsigned int max_bandwidth_khz;
5667
5668 reg_rule = &regdom->reg_rules[i];
5669 freq_range = &reg_rule->freq_range;
5670 power_rule = &reg_rule->power_rule;
5671
5672 nl_reg_rule = nla_nest_start(msg, i);
5673 if (!nl_reg_rule)
5674 goto nla_put_failure;
5675
5676 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5677 if (!max_bandwidth_khz)
5678 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5679 reg_rule);
5680
5681 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5682 reg_rule->flags) ||
5683 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5684 freq_range->start_freq_khz) ||
5685 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5686 freq_range->end_freq_khz) ||
5687 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5688 max_bandwidth_khz) ||
5689 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5690 power_rule->max_antenna_gain) ||
5691 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5692 power_rule->max_eirp) ||
5693 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5694 reg_rule->dfs_cac_ms))
5695 goto nla_put_failure;
5696
5697 nla_nest_end(msg, nl_reg_rule);
5698 }
5699
5700 nla_nest_end(msg, nl_reg_rules);
5701 return 0;
5702
5703 nla_put_failure:
5704 return -EMSGSIZE;
5705 }
5706
5707 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5708 {
5709 const struct ieee80211_regdomain *regdom = NULL;
5710 struct cfg80211_registered_device *rdev;
5711 struct wiphy *wiphy = NULL;
5712 struct sk_buff *msg;
5713 void *hdr;
5714
5715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5716 if (!msg)
5717 return -ENOBUFS;
5718
5719 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5720 NL80211_CMD_GET_REG);
5721 if (!hdr)
5722 goto put_failure;
5723
5724 if (info->attrs[NL80211_ATTR_WIPHY]) {
5725 bool self_managed;
5726
5727 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5728 if (IS_ERR(rdev)) {
5729 nlmsg_free(msg);
5730 return PTR_ERR(rdev);
5731 }
5732
5733 wiphy = &rdev->wiphy;
5734 self_managed = wiphy->regulatory_flags &
5735 REGULATORY_WIPHY_SELF_MANAGED;
5736 regdom = get_wiphy_regdom(wiphy);
5737
5738 /* a self-managed-reg device must have a private regdom */
5739 if (WARN_ON(!regdom && self_managed)) {
5740 nlmsg_free(msg);
5741 return -EINVAL;
5742 }
5743
5744 if (regdom &&
5745 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5746 goto nla_put_failure;
5747 }
5748
5749 if (!wiphy && reg_last_request_cell_base() &&
5750 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5751 NL80211_USER_REG_HINT_CELL_BASE))
5752 goto nla_put_failure;
5753
5754 rcu_read_lock();
5755
5756 if (!regdom)
5757 regdom = rcu_dereference(cfg80211_regdomain);
5758
5759 if (nl80211_put_regdom(regdom, msg))
5760 goto nla_put_failure_rcu;
5761
5762 rcu_read_unlock();
5763
5764 genlmsg_end(msg, hdr);
5765 return genlmsg_reply(msg, info);
5766
5767 nla_put_failure_rcu:
5768 rcu_read_unlock();
5769 nla_put_failure:
5770 genlmsg_cancel(msg, hdr);
5771 put_failure:
5772 nlmsg_free(msg);
5773 return -EMSGSIZE;
5774 }
5775
5776 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5777 u32 seq, int flags, struct wiphy *wiphy,
5778 const struct ieee80211_regdomain *regdom)
5779 {
5780 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5781 NL80211_CMD_GET_REG);
5782
5783 if (!hdr)
5784 return -1;
5785
5786 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5787
5788 if (nl80211_put_regdom(regdom, msg))
5789 goto nla_put_failure;
5790
5791 if (!wiphy && reg_last_request_cell_base() &&
5792 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5793 NL80211_USER_REG_HINT_CELL_BASE))
5794 goto nla_put_failure;
5795
5796 if (wiphy &&
5797 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5798 goto nla_put_failure;
5799
5800 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5801 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5802 goto nla_put_failure;
5803
5804 genlmsg_end(msg, hdr);
5805 return 0;
5806
5807 nla_put_failure:
5808 genlmsg_cancel(msg, hdr);
5809 return -EMSGSIZE;
5810 }
5811
5812 static int nl80211_get_reg_dump(struct sk_buff *skb,
5813 struct netlink_callback *cb)
5814 {
5815 const struct ieee80211_regdomain *regdom = NULL;
5816 struct cfg80211_registered_device *rdev;
5817 int err, reg_idx, start = cb->args[2];
5818
5819 rtnl_lock();
5820
5821 if (cfg80211_regdomain && start == 0) {
5822 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5823 NLM_F_MULTI, NULL,
5824 rtnl_dereference(cfg80211_regdomain));
5825 if (err < 0)
5826 goto out_err;
5827 }
5828
5829 /* the global regdom is idx 0 */
5830 reg_idx = 1;
5831 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5832 regdom = get_wiphy_regdom(&rdev->wiphy);
5833 if (!regdom)
5834 continue;
5835
5836 if (++reg_idx <= start)
5837 continue;
5838
5839 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5840 NLM_F_MULTI, &rdev->wiphy, regdom);
5841 if (err < 0) {
5842 reg_idx--;
5843 break;
5844 }
5845 }
5846
5847 cb->args[2] = reg_idx;
5848 err = skb->len;
5849 out_err:
5850 rtnl_unlock();
5851 return err;
5852 }
5853
5854 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5855 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5856 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5857 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5858 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5859 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5860 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5861 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5862 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
5863 };
5864
5865 static int parse_reg_rule(struct nlattr *tb[],
5866 struct ieee80211_reg_rule *reg_rule)
5867 {
5868 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5869 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5870
5871 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5872 return -EINVAL;
5873 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5874 return -EINVAL;
5875 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5876 return -EINVAL;
5877 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5878 return -EINVAL;
5879 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5880 return -EINVAL;
5881
5882 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5883
5884 freq_range->start_freq_khz =
5885 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5886 freq_range->end_freq_khz =
5887 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5888 freq_range->max_bandwidth_khz =
5889 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5890
5891 power_rule->max_eirp =
5892 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5893
5894 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5895 power_rule->max_antenna_gain =
5896 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5897
5898 if (tb[NL80211_ATTR_DFS_CAC_TIME])
5899 reg_rule->dfs_cac_ms =
5900 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5901
5902 return 0;
5903 }
5904
5905 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5906 {
5907 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5908 struct nlattr *nl_reg_rule;
5909 char *alpha2;
5910 int rem_reg_rules, r;
5911 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5912 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5913 struct ieee80211_regdomain *rd;
5914
5915 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5916 return -EINVAL;
5917
5918 if (!info->attrs[NL80211_ATTR_REG_RULES])
5919 return -EINVAL;
5920
5921 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5922
5923 if (info->attrs[NL80211_ATTR_DFS_REGION])
5924 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5925
5926 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5927 rem_reg_rules) {
5928 num_rules++;
5929 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5930 return -EINVAL;
5931 }
5932
5933 if (!reg_is_valid_request(alpha2))
5934 return -EINVAL;
5935
5936 size_of_regd = sizeof(struct ieee80211_regdomain) +
5937 num_rules * sizeof(struct ieee80211_reg_rule);
5938
5939 rd = kzalloc(size_of_regd, GFP_KERNEL);
5940 if (!rd)
5941 return -ENOMEM;
5942
5943 rd->n_reg_rules = num_rules;
5944 rd->alpha2[0] = alpha2[0];
5945 rd->alpha2[1] = alpha2[1];
5946
5947 /*
5948 * Disable DFS master mode if the DFS region was
5949 * not supported or known on this kernel.
5950 */
5951 if (reg_supported_dfs_region(dfs_region))
5952 rd->dfs_region = dfs_region;
5953
5954 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5955 rem_reg_rules) {
5956 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5957 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5958 reg_rule_policy);
5959 if (r)
5960 goto bad_reg;
5961 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5962 if (r)
5963 goto bad_reg;
5964
5965 rule_idx++;
5966
5967 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5968 r = -EINVAL;
5969 goto bad_reg;
5970 }
5971 }
5972
5973 /* set_regdom takes ownership of rd */
5974 return set_regdom(rd, REGD_SOURCE_CRDA);
5975 bad_reg:
5976 kfree(rd);
5977 return r;
5978 }
5979 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5980
5981 static int validate_scan_freqs(struct nlattr *freqs)
5982 {
5983 struct nlattr *attr1, *attr2;
5984 int n_channels = 0, tmp1, tmp2;
5985
5986 nla_for_each_nested(attr1, freqs, tmp1) {
5987 n_channels++;
5988 /*
5989 * Some hardware has a limited channel list for
5990 * scanning, and it is pretty much nonsensical
5991 * to scan for a channel twice, so disallow that
5992 * and don't require drivers to check that the
5993 * channel list they get isn't longer than what
5994 * they can scan, as long as they can scan all
5995 * the channels they registered at once.
5996 */
5997 nla_for_each_nested(attr2, freqs, tmp2)
5998 if (attr1 != attr2 &&
5999 nla_get_u32(attr1) == nla_get_u32(attr2))
6000 return 0;
6001 }
6002
6003 return n_channels;
6004 }
6005
6006 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6007 {
6008 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6009 }
6010
6011 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6012 struct cfg80211_bss_selection *bss_select)
6013 {
6014 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6015 struct nlattr *nest;
6016 int err;
6017 bool found = false;
6018 int i;
6019
6020 /* only process one nested attribute */
6021 nest = nla_data(nla);
6022 if (!nla_ok(nest, nla_len(nest)))
6023 return -EINVAL;
6024
6025 err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest),
6026 nla_len(nest), nl80211_bss_select_policy);
6027 if (err)
6028 return err;
6029
6030 /* only one attribute may be given */
6031 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6032 if (attr[i]) {
6033 if (found)
6034 return -EINVAL;
6035 found = true;
6036 }
6037 }
6038
6039 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6040
6041 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6042 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6043
6044 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6045 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6046 bss_select->param.band_pref =
6047 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6048 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6049 return -EINVAL;
6050 }
6051
6052 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6053 struct nl80211_bss_select_rssi_adjust *adj_param;
6054
6055 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6056 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6057 bss_select->param.adjust.band = adj_param->band;
6058 bss_select->param.adjust.delta = adj_param->delta;
6059 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6060 return -EINVAL;
6061 }
6062
6063 /* user-space did not provide behaviour attribute */
6064 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6065 return -EINVAL;
6066
6067 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6068 return -EINVAL;
6069
6070 return 0;
6071 }
6072
6073 static int nl80211_parse_random_mac(struct nlattr **attrs,
6074 u8 *mac_addr, u8 *mac_addr_mask)
6075 {
6076 int i;
6077
6078 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6079 eth_zero_addr(mac_addr);
6080 eth_zero_addr(mac_addr_mask);
6081 mac_addr[0] = 0x2;
6082 mac_addr_mask[0] = 0x3;
6083
6084 return 0;
6085 }
6086
6087 /* need both or none */
6088 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6089 return -EINVAL;
6090
6091 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6092 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6093
6094 /* don't allow or configure an mcast address */
6095 if (!is_multicast_ether_addr(mac_addr_mask) ||
6096 is_multicast_ether_addr(mac_addr))
6097 return -EINVAL;
6098
6099 /*
6100 * allow users to pass a MAC address that has bits set outside
6101 * of the mask, but don't bother drivers with having to deal
6102 * with such bits
6103 */
6104 for (i = 0; i < ETH_ALEN; i++)
6105 mac_addr[i] &= mac_addr_mask[i];
6106
6107 return 0;
6108 }
6109
6110 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6111 {
6112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6113 struct wireless_dev *wdev = info->user_ptr[1];
6114 struct cfg80211_scan_request *request;
6115 struct nlattr *attr;
6116 struct wiphy *wiphy;
6117 int err, tmp, n_ssids = 0, n_channels, i;
6118 size_t ie_len;
6119
6120 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6121 return -EINVAL;
6122
6123 wiphy = &rdev->wiphy;
6124
6125 if (!rdev->ops->scan)
6126 return -EOPNOTSUPP;
6127
6128 if (rdev->scan_req || rdev->scan_msg) {
6129 err = -EBUSY;
6130 goto unlock;
6131 }
6132
6133 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6134 n_channels = validate_scan_freqs(
6135 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6136 if (!n_channels) {
6137 err = -EINVAL;
6138 goto unlock;
6139 }
6140 } else {
6141 n_channels = ieee80211_get_num_supported_channels(wiphy);
6142 }
6143
6144 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6145 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6146 n_ssids++;
6147
6148 if (n_ssids > wiphy->max_scan_ssids) {
6149 err = -EINVAL;
6150 goto unlock;
6151 }
6152
6153 if (info->attrs[NL80211_ATTR_IE])
6154 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6155 else
6156 ie_len = 0;
6157
6158 if (ie_len > wiphy->max_scan_ie_len) {
6159 err = -EINVAL;
6160 goto unlock;
6161 }
6162
6163 request = kzalloc(sizeof(*request)
6164 + sizeof(*request->ssids) * n_ssids
6165 + sizeof(*request->channels) * n_channels
6166 + ie_len, GFP_KERNEL);
6167 if (!request) {
6168 err = -ENOMEM;
6169 goto unlock;
6170 }
6171
6172 if (n_ssids)
6173 request->ssids = (void *)&request->channels[n_channels];
6174 request->n_ssids = n_ssids;
6175 if (ie_len) {
6176 if (n_ssids)
6177 request->ie = (void *)(request->ssids + n_ssids);
6178 else
6179 request->ie = (void *)(request->channels + n_channels);
6180 }
6181
6182 i = 0;
6183 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6184 /* user specified, bail out if channel not found */
6185 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6186 struct ieee80211_channel *chan;
6187
6188 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6189
6190 if (!chan) {
6191 err = -EINVAL;
6192 goto out_free;
6193 }
6194
6195 /* ignore disabled channels */
6196 if (chan->flags & IEEE80211_CHAN_DISABLED)
6197 continue;
6198
6199 request->channels[i] = chan;
6200 i++;
6201 }
6202 } else {
6203 enum nl80211_band band;
6204
6205 /* all channels */
6206 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6207 int j;
6208
6209 if (!wiphy->bands[band])
6210 continue;
6211 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6212 struct ieee80211_channel *chan;
6213
6214 chan = &wiphy->bands[band]->channels[j];
6215
6216 if (chan->flags & IEEE80211_CHAN_DISABLED)
6217 continue;
6218
6219 request->channels[i] = chan;
6220 i++;
6221 }
6222 }
6223 }
6224
6225 if (!i) {
6226 err = -EINVAL;
6227 goto out_free;
6228 }
6229
6230 request->n_channels = i;
6231
6232 i = 0;
6233 if (n_ssids) {
6234 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6235 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6236 err = -EINVAL;
6237 goto out_free;
6238 }
6239 request->ssids[i].ssid_len = nla_len(attr);
6240 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6241 i++;
6242 }
6243 }
6244
6245 if (info->attrs[NL80211_ATTR_IE]) {
6246 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6247 memcpy((void *)request->ie,
6248 nla_data(info->attrs[NL80211_ATTR_IE]),
6249 request->ie_len);
6250 }
6251
6252 for (i = 0; i < NUM_NL80211_BANDS; i++)
6253 if (wiphy->bands[i])
6254 request->rates[i] =
6255 (1 << wiphy->bands[i]->n_bitrates) - 1;
6256
6257 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6258 nla_for_each_nested(attr,
6259 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6260 tmp) {
6261 enum nl80211_band band = nla_type(attr);
6262
6263 if (band < 0 || band >= NUM_NL80211_BANDS) {
6264 err = -EINVAL;
6265 goto out_free;
6266 }
6267
6268 if (!wiphy->bands[band])
6269 continue;
6270
6271 err = ieee80211_get_ratemask(wiphy->bands[band],
6272 nla_data(attr),
6273 nla_len(attr),
6274 &request->rates[band]);
6275 if (err)
6276 goto out_free;
6277 }
6278 }
6279
6280 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6281 if (!wiphy_ext_feature_isset(wiphy,
6282 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6283 err = -EOPNOTSUPP;
6284 goto out_free;
6285 }
6286
6287 request->duration =
6288 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6289 request->duration_mandatory =
6290 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6291 }
6292
6293 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6294 request->flags = nla_get_u32(
6295 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6296 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6297 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6298 err = -EOPNOTSUPP;
6299 goto out_free;
6300 }
6301
6302 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6303 if (!(wiphy->features &
6304 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6305 err = -EOPNOTSUPP;
6306 goto out_free;
6307 }
6308
6309 if (wdev->current_bss) {
6310 err = -EOPNOTSUPP;
6311 goto out_free;
6312 }
6313
6314 err = nl80211_parse_random_mac(info->attrs,
6315 request->mac_addr,
6316 request->mac_addr_mask);
6317 if (err)
6318 goto out_free;
6319 }
6320 }
6321
6322 request->no_cck =
6323 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6324
6325 if (info->attrs[NL80211_ATTR_MAC])
6326 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6327 ETH_ALEN);
6328 else
6329 eth_broadcast_addr(request->bssid);
6330
6331 request->wdev = wdev;
6332 request->wiphy = &rdev->wiphy;
6333 request->scan_start = jiffies;
6334
6335 rdev->scan_req = request;
6336 err = rdev_scan(rdev, request);
6337
6338 if (!err) {
6339 nl80211_send_scan_start(rdev, wdev);
6340 if (wdev->netdev)
6341 dev_hold(wdev->netdev);
6342 } else {
6343 out_free:
6344 rdev->scan_req = NULL;
6345 kfree(request);
6346 }
6347
6348 unlock:
6349 return err;
6350 }
6351
6352 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6353 {
6354 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6355 struct wireless_dev *wdev = info->user_ptr[1];
6356
6357 if (!rdev->ops->abort_scan)
6358 return -EOPNOTSUPP;
6359
6360 if (rdev->scan_msg)
6361 return 0;
6362
6363 if (!rdev->scan_req)
6364 return -ENOENT;
6365
6366 rdev_abort_scan(rdev, wdev);
6367 return 0;
6368 }
6369
6370 static int
6371 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6372 struct cfg80211_sched_scan_request *request,
6373 struct nlattr **attrs)
6374 {
6375 int tmp, err, i = 0;
6376 struct nlattr *attr;
6377
6378 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6379 u32 interval;
6380
6381 /*
6382 * If scan plans are not specified,
6383 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6384 * case one scan plan will be set with the specified scan
6385 * interval and infinite number of iterations.
6386 */
6387 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6388 return -EINVAL;
6389
6390 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6391 if (!interval)
6392 return -EINVAL;
6393
6394 request->scan_plans[0].interval =
6395 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6396 if (!request->scan_plans[0].interval)
6397 return -EINVAL;
6398
6399 if (request->scan_plans[0].interval >
6400 wiphy->max_sched_scan_plan_interval)
6401 request->scan_plans[0].interval =
6402 wiphy->max_sched_scan_plan_interval;
6403
6404 return 0;
6405 }
6406
6407 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6408 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6409
6410 if (WARN_ON(i >= n_plans))
6411 return -EINVAL;
6412
6413 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6414 nla_data(attr), nla_len(attr),
6415 nl80211_plan_policy);
6416 if (err)
6417 return err;
6418
6419 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6420 return -EINVAL;
6421
6422 request->scan_plans[i].interval =
6423 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6424 if (!request->scan_plans[i].interval ||
6425 request->scan_plans[i].interval >
6426 wiphy->max_sched_scan_plan_interval)
6427 return -EINVAL;
6428
6429 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6430 request->scan_plans[i].iterations =
6431 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6432 if (!request->scan_plans[i].iterations ||
6433 (request->scan_plans[i].iterations >
6434 wiphy->max_sched_scan_plan_iterations))
6435 return -EINVAL;
6436 } else if (i < n_plans - 1) {
6437 /*
6438 * All scan plans but the last one must specify
6439 * a finite number of iterations
6440 */
6441 return -EINVAL;
6442 }
6443
6444 i++;
6445 }
6446
6447 /*
6448 * The last scan plan must not specify the number of
6449 * iterations, it is supposed to run infinitely
6450 */
6451 if (request->scan_plans[n_plans - 1].iterations)
6452 return -EINVAL;
6453
6454 return 0;
6455 }
6456
6457 static struct cfg80211_sched_scan_request *
6458 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6459 struct nlattr **attrs)
6460 {
6461 struct cfg80211_sched_scan_request *request;
6462 struct nlattr *attr;
6463 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6464 enum nl80211_band band;
6465 size_t ie_len;
6466 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6467 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6468
6469 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6470 return ERR_PTR(-EINVAL);
6471
6472 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6473 n_channels = validate_scan_freqs(
6474 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6475 if (!n_channels)
6476 return ERR_PTR(-EINVAL);
6477 } else {
6478 n_channels = ieee80211_get_num_supported_channels(wiphy);
6479 }
6480
6481 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6482 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6483 tmp)
6484 n_ssids++;
6485
6486 if (n_ssids > wiphy->max_sched_scan_ssids)
6487 return ERR_PTR(-EINVAL);
6488
6489 /*
6490 * First, count the number of 'real' matchsets. Due to an issue with
6491 * the old implementation, matchsets containing only the RSSI attribute
6492 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6493 * RSSI for all matchsets, rather than their own matchset for reporting
6494 * all APs with a strong RSSI. This is needed to be compatible with
6495 * older userspace that treated a matchset with only the RSSI as the
6496 * global RSSI for all other matchsets - if there are other matchsets.
6497 */
6498 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6499 nla_for_each_nested(attr,
6500 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6501 tmp) {
6502 struct nlattr *rssi;
6503
6504 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6505 nla_data(attr), nla_len(attr),
6506 nl80211_match_policy);
6507 if (err)
6508 return ERR_PTR(err);
6509 /* add other standalone attributes here */
6510 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6511 n_match_sets++;
6512 continue;
6513 }
6514 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6515 if (rssi)
6516 default_match_rssi = nla_get_s32(rssi);
6517 }
6518 }
6519
6520 /* However, if there's no other matchset, add the RSSI one */
6521 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6522 n_match_sets = 1;
6523
6524 if (n_match_sets > wiphy->max_match_sets)
6525 return ERR_PTR(-EINVAL);
6526
6527 if (attrs[NL80211_ATTR_IE])
6528 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6529 else
6530 ie_len = 0;
6531
6532 if (ie_len > wiphy->max_sched_scan_ie_len)
6533 return ERR_PTR(-EINVAL);
6534
6535 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6536 /*
6537 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6538 * each scan plan already specifies its own interval
6539 */
6540 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6541 return ERR_PTR(-EINVAL);
6542
6543 nla_for_each_nested(attr,
6544 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6545 n_plans++;
6546 } else {
6547 /*
6548 * The scan interval attribute is kept for backward
6549 * compatibility. If no scan plans are specified and sched scan
6550 * interval is specified, one scan plan will be set with this
6551 * scan interval and infinite number of iterations.
6552 */
6553 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6554 return ERR_PTR(-EINVAL);
6555
6556 n_plans = 1;
6557 }
6558
6559 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6560 return ERR_PTR(-EINVAL);
6561
6562 request = kzalloc(sizeof(*request)
6563 + sizeof(*request->ssids) * n_ssids
6564 + sizeof(*request->match_sets) * n_match_sets
6565 + sizeof(*request->scan_plans) * n_plans
6566 + sizeof(*request->channels) * n_channels
6567 + ie_len, GFP_KERNEL);
6568 if (!request)
6569 return ERR_PTR(-ENOMEM);
6570
6571 if (n_ssids)
6572 request->ssids = (void *)&request->channels[n_channels];
6573 request->n_ssids = n_ssids;
6574 if (ie_len) {
6575 if (n_ssids)
6576 request->ie = (void *)(request->ssids + n_ssids);
6577 else
6578 request->ie = (void *)(request->channels + n_channels);
6579 }
6580
6581 if (n_match_sets) {
6582 if (request->ie)
6583 request->match_sets = (void *)(request->ie + ie_len);
6584 else if (n_ssids)
6585 request->match_sets =
6586 (void *)(request->ssids + n_ssids);
6587 else
6588 request->match_sets =
6589 (void *)(request->channels + n_channels);
6590 }
6591 request->n_match_sets = n_match_sets;
6592
6593 if (n_match_sets)
6594 request->scan_plans = (void *)(request->match_sets +
6595 n_match_sets);
6596 else if (request->ie)
6597 request->scan_plans = (void *)(request->ie + ie_len);
6598 else if (n_ssids)
6599 request->scan_plans = (void *)(request->ssids + n_ssids);
6600 else
6601 request->scan_plans = (void *)(request->channels + n_channels);
6602
6603 request->n_scan_plans = n_plans;
6604
6605 i = 0;
6606 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6607 /* user specified, bail out if channel not found */
6608 nla_for_each_nested(attr,
6609 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6610 tmp) {
6611 struct ieee80211_channel *chan;
6612
6613 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6614
6615 if (!chan) {
6616 err = -EINVAL;
6617 goto out_free;
6618 }
6619
6620 /* ignore disabled channels */
6621 if (chan->flags & IEEE80211_CHAN_DISABLED)
6622 continue;
6623
6624 request->channels[i] = chan;
6625 i++;
6626 }
6627 } else {
6628 /* all channels */
6629 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6630 int j;
6631
6632 if (!wiphy->bands[band])
6633 continue;
6634 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6635 struct ieee80211_channel *chan;
6636
6637 chan = &wiphy->bands[band]->channels[j];
6638
6639 if (chan->flags & IEEE80211_CHAN_DISABLED)
6640 continue;
6641
6642 request->channels[i] = chan;
6643 i++;
6644 }
6645 }
6646 }
6647
6648 if (!i) {
6649 err = -EINVAL;
6650 goto out_free;
6651 }
6652
6653 request->n_channels = i;
6654
6655 i = 0;
6656 if (n_ssids) {
6657 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6658 tmp) {
6659 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6660 err = -EINVAL;
6661 goto out_free;
6662 }
6663 request->ssids[i].ssid_len = nla_len(attr);
6664 memcpy(request->ssids[i].ssid, nla_data(attr),
6665 nla_len(attr));
6666 i++;
6667 }
6668 }
6669
6670 i = 0;
6671 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6672 nla_for_each_nested(attr,
6673 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6674 tmp) {
6675 struct nlattr *ssid, *rssi;
6676
6677 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6678 nla_data(attr), nla_len(attr),
6679 nl80211_match_policy);
6680 if (err)
6681 goto out_free;
6682 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6683 if (ssid) {
6684 if (WARN_ON(i >= n_match_sets)) {
6685 /* this indicates a programming error,
6686 * the loop above should have verified
6687 * things properly
6688 */
6689 err = -EINVAL;
6690 goto out_free;
6691 }
6692
6693 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6694 err = -EINVAL;
6695 goto out_free;
6696 }
6697 memcpy(request->match_sets[i].ssid.ssid,
6698 nla_data(ssid), nla_len(ssid));
6699 request->match_sets[i].ssid.ssid_len =
6700 nla_len(ssid);
6701 /* special attribute - old implementation w/a */
6702 request->match_sets[i].rssi_thold =
6703 default_match_rssi;
6704 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6705 if (rssi)
6706 request->match_sets[i].rssi_thold =
6707 nla_get_s32(rssi);
6708 }
6709 i++;
6710 }
6711
6712 /* there was no other matchset, so the RSSI one is alone */
6713 if (i == 0 && n_match_sets)
6714 request->match_sets[0].rssi_thold = default_match_rssi;
6715
6716 request->min_rssi_thold = INT_MAX;
6717 for (i = 0; i < n_match_sets; i++)
6718 request->min_rssi_thold =
6719 min(request->match_sets[i].rssi_thold,
6720 request->min_rssi_thold);
6721 } else {
6722 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6723 }
6724
6725 if (ie_len) {
6726 request->ie_len = ie_len;
6727 memcpy((void *)request->ie,
6728 nla_data(attrs[NL80211_ATTR_IE]),
6729 request->ie_len);
6730 }
6731
6732 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6733 request->flags = nla_get_u32(
6734 attrs[NL80211_ATTR_SCAN_FLAGS]);
6735 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6736 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6737 err = -EOPNOTSUPP;
6738 goto out_free;
6739 }
6740
6741 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6742 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6743
6744 if (!wdev) /* must be net-detect */
6745 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6746
6747 if (!(wiphy->features & flg)) {
6748 err = -EOPNOTSUPP;
6749 goto out_free;
6750 }
6751
6752 if (wdev && wdev->current_bss) {
6753 err = -EOPNOTSUPP;
6754 goto out_free;
6755 }
6756
6757 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6758 request->mac_addr_mask);
6759 if (err)
6760 goto out_free;
6761 }
6762 }
6763
6764 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6765 request->delay =
6766 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6767
6768 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6769 if (err)
6770 goto out_free;
6771
6772 request->scan_start = jiffies;
6773
6774 return request;
6775
6776 out_free:
6777 kfree(request);
6778 return ERR_PTR(err);
6779 }
6780
6781 static int nl80211_start_sched_scan(struct sk_buff *skb,
6782 struct genl_info *info)
6783 {
6784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6785 struct net_device *dev = info->user_ptr[1];
6786 struct wireless_dev *wdev = dev->ieee80211_ptr;
6787 struct cfg80211_sched_scan_request *sched_scan_req;
6788 int err;
6789
6790 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6791 !rdev->ops->sched_scan_start)
6792 return -EOPNOTSUPP;
6793
6794 if (rdev->sched_scan_req)
6795 return -EINPROGRESS;
6796
6797 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6798 info->attrs);
6799
6800 err = PTR_ERR_OR_ZERO(sched_scan_req);
6801 if (err)
6802 goto out_err;
6803
6804 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6805 if (err)
6806 goto out_free;
6807
6808 sched_scan_req->dev = dev;
6809 sched_scan_req->wiphy = &rdev->wiphy;
6810
6811 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6812 sched_scan_req->owner_nlportid = info->snd_portid;
6813
6814 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6815
6816 nl80211_send_sched_scan(rdev, dev,
6817 NL80211_CMD_START_SCHED_SCAN);
6818 return 0;
6819
6820 out_free:
6821 kfree(sched_scan_req);
6822 out_err:
6823 return err;
6824 }
6825
6826 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6827 struct genl_info *info)
6828 {
6829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6830
6831 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6832 !rdev->ops->sched_scan_stop)
6833 return -EOPNOTSUPP;
6834
6835 return __cfg80211_stop_sched_scan(rdev, false);
6836 }
6837
6838 static int nl80211_start_radar_detection(struct sk_buff *skb,
6839 struct genl_info *info)
6840 {
6841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6842 struct net_device *dev = info->user_ptr[1];
6843 struct wireless_dev *wdev = dev->ieee80211_ptr;
6844 struct cfg80211_chan_def chandef;
6845 enum nl80211_dfs_regions dfs_region;
6846 unsigned int cac_time_ms;
6847 int err;
6848
6849 dfs_region = reg_get_dfs_region(wdev->wiphy);
6850 if (dfs_region == NL80211_DFS_UNSET)
6851 return -EINVAL;
6852
6853 err = nl80211_parse_chandef(rdev, info, &chandef);
6854 if (err)
6855 return err;
6856
6857 if (netif_carrier_ok(dev))
6858 return -EBUSY;
6859
6860 if (wdev->cac_started)
6861 return -EBUSY;
6862
6863 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6864 wdev->iftype);
6865 if (err < 0)
6866 return err;
6867
6868 if (err == 0)
6869 return -EINVAL;
6870
6871 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6872 return -EINVAL;
6873
6874 if (!rdev->ops->start_radar_detection)
6875 return -EOPNOTSUPP;
6876
6877 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6878 if (WARN_ON(!cac_time_ms))
6879 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6880
6881 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
6882 if (!err) {
6883 wdev->chandef = chandef;
6884 wdev->cac_started = true;
6885 wdev->cac_start_time = jiffies;
6886 wdev->cac_time_ms = cac_time_ms;
6887 }
6888 return err;
6889 }
6890
6891 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6892 {
6893 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6894 struct net_device *dev = info->user_ptr[1];
6895 struct wireless_dev *wdev = dev->ieee80211_ptr;
6896 struct cfg80211_csa_settings params;
6897 /* csa_attrs is defined static to avoid waste of stack size - this
6898 * function is called under RTNL lock, so this should not be a problem.
6899 */
6900 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6901 int err;
6902 bool need_new_beacon = false;
6903 int len, i;
6904 u32 cs_count;
6905
6906 if (!rdev->ops->channel_switch ||
6907 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6908 return -EOPNOTSUPP;
6909
6910 switch (dev->ieee80211_ptr->iftype) {
6911 case NL80211_IFTYPE_AP:
6912 case NL80211_IFTYPE_P2P_GO:
6913 need_new_beacon = true;
6914
6915 /* useless if AP is not running */
6916 if (!wdev->beacon_interval)
6917 return -ENOTCONN;
6918 break;
6919 case NL80211_IFTYPE_ADHOC:
6920 if (!wdev->ssid_len)
6921 return -ENOTCONN;
6922 break;
6923 case NL80211_IFTYPE_MESH_POINT:
6924 if (!wdev->mesh_id_len)
6925 return -ENOTCONN;
6926 break;
6927 default:
6928 return -EOPNOTSUPP;
6929 }
6930
6931 memset(&params, 0, sizeof(params));
6932
6933 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6934 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6935 return -EINVAL;
6936
6937 /* only important for AP, IBSS and mesh create IEs internally */
6938 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6939 return -EINVAL;
6940
6941 /* Even though the attribute is u32, the specification says
6942 * u8, so let's make sure we don't overflow.
6943 */
6944 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6945 if (cs_count > 255)
6946 return -EINVAL;
6947
6948 params.count = cs_count;
6949
6950 if (!need_new_beacon)
6951 goto skip_beacons;
6952
6953 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6954 if (err)
6955 return err;
6956
6957 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6958 info->attrs[NL80211_ATTR_CSA_IES],
6959 nl80211_policy);
6960 if (err)
6961 return err;
6962
6963 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6964 if (err)
6965 return err;
6966
6967 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6968 return -EINVAL;
6969
6970 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6971 if (!len || (len % sizeof(u16)))
6972 return -EINVAL;
6973
6974 params.n_counter_offsets_beacon = len / sizeof(u16);
6975 if (rdev->wiphy.max_num_csa_counters &&
6976 (params.n_counter_offsets_beacon >
6977 rdev->wiphy.max_num_csa_counters))
6978 return -EINVAL;
6979
6980 params.counter_offsets_beacon =
6981 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6982
6983 /* sanity checks - counters should fit and be the same */
6984 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6985 u16 offset = params.counter_offsets_beacon[i];
6986
6987 if (offset >= params.beacon_csa.tail_len)
6988 return -EINVAL;
6989
6990 if (params.beacon_csa.tail[offset] != params.count)
6991 return -EINVAL;
6992 }
6993
6994 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6995 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6996 if (!len || (len % sizeof(u16)))
6997 return -EINVAL;
6998
6999 params.n_counter_offsets_presp = len / sizeof(u16);
7000 if (rdev->wiphy.max_num_csa_counters &&
7001 (params.n_counter_offsets_beacon >
7002 rdev->wiphy.max_num_csa_counters))
7003 return -EINVAL;
7004
7005 params.counter_offsets_presp =
7006 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7007
7008 /* sanity checks - counters should fit and be the same */
7009 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7010 u16 offset = params.counter_offsets_presp[i];
7011
7012 if (offset >= params.beacon_csa.probe_resp_len)
7013 return -EINVAL;
7014
7015 if (params.beacon_csa.probe_resp[offset] !=
7016 params.count)
7017 return -EINVAL;
7018 }
7019 }
7020
7021 skip_beacons:
7022 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7023 if (err)
7024 return err;
7025
7026 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7027 wdev->iftype))
7028 return -EINVAL;
7029
7030 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7031 &params.chandef,
7032 wdev->iftype);
7033 if (err < 0)
7034 return err;
7035
7036 if (err > 0)
7037 params.radar_required = true;
7038
7039 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7040 params.block_tx = true;
7041
7042 wdev_lock(wdev);
7043 err = rdev_channel_switch(rdev, dev, &params);
7044 wdev_unlock(wdev);
7045
7046 return err;
7047 }
7048
7049 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7050 u32 seq, int flags,
7051 struct cfg80211_registered_device *rdev,
7052 struct wireless_dev *wdev,
7053 struct cfg80211_internal_bss *intbss)
7054 {
7055 struct cfg80211_bss *res = &intbss->pub;
7056 const struct cfg80211_bss_ies *ies;
7057 void *hdr;
7058 struct nlattr *bss;
7059
7060 ASSERT_WDEV_LOCK(wdev);
7061
7062 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7063 NL80211_CMD_NEW_SCAN_RESULTS);
7064 if (!hdr)
7065 return -1;
7066
7067 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7068
7069 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7070 goto nla_put_failure;
7071 if (wdev->netdev &&
7072 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7073 goto nla_put_failure;
7074 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7075 NL80211_ATTR_PAD))
7076 goto nla_put_failure;
7077
7078 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7079 if (!bss)
7080 goto nla_put_failure;
7081 if ((!is_zero_ether_addr(res->bssid) &&
7082 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7083 goto nla_put_failure;
7084
7085 rcu_read_lock();
7086 /* indicate whether we have probe response data or not */
7087 if (rcu_access_pointer(res->proberesp_ies) &&
7088 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7089 goto fail_unlock_rcu;
7090
7091 /* this pointer prefers to be pointed to probe response data
7092 * but is always valid
7093 */
7094 ies = rcu_dereference(res->ies);
7095 if (ies) {
7096 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7097 NL80211_BSS_PAD))
7098 goto fail_unlock_rcu;
7099 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7100 ies->len, ies->data))
7101 goto fail_unlock_rcu;
7102 }
7103
7104 /* and this pointer is always (unless driver didn't know) beacon data */
7105 ies = rcu_dereference(res->beacon_ies);
7106 if (ies && ies->from_beacon) {
7107 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7108 NL80211_BSS_PAD))
7109 goto fail_unlock_rcu;
7110 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7111 ies->len, ies->data))
7112 goto fail_unlock_rcu;
7113 }
7114 rcu_read_unlock();
7115
7116 if (res->beacon_interval &&
7117 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7118 goto nla_put_failure;
7119 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7120 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7121 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7122 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7123 jiffies_to_msecs(jiffies - intbss->ts)))
7124 goto nla_put_failure;
7125
7126 if (intbss->parent_tsf &&
7127 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7128 intbss->parent_tsf, NL80211_BSS_PAD) ||
7129 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7130 intbss->parent_bssid)))
7131 goto nla_put_failure;
7132
7133 if (intbss->ts_boottime &&
7134 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7135 intbss->ts_boottime, NL80211_BSS_PAD))
7136 goto nla_put_failure;
7137
7138 switch (rdev->wiphy.signal_type) {
7139 case CFG80211_SIGNAL_TYPE_MBM:
7140 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7141 goto nla_put_failure;
7142 break;
7143 case CFG80211_SIGNAL_TYPE_UNSPEC:
7144 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7145 goto nla_put_failure;
7146 break;
7147 default:
7148 break;
7149 }
7150
7151 switch (wdev->iftype) {
7152 case NL80211_IFTYPE_P2P_CLIENT:
7153 case NL80211_IFTYPE_STATION:
7154 if (intbss == wdev->current_bss &&
7155 nla_put_u32(msg, NL80211_BSS_STATUS,
7156 NL80211_BSS_STATUS_ASSOCIATED))
7157 goto nla_put_failure;
7158 break;
7159 case NL80211_IFTYPE_ADHOC:
7160 if (intbss == wdev->current_bss &&
7161 nla_put_u32(msg, NL80211_BSS_STATUS,
7162 NL80211_BSS_STATUS_IBSS_JOINED))
7163 goto nla_put_failure;
7164 break;
7165 default:
7166 break;
7167 }
7168
7169 nla_nest_end(msg, bss);
7170
7171 genlmsg_end(msg, hdr);
7172 return 0;
7173
7174 fail_unlock_rcu:
7175 rcu_read_unlock();
7176 nla_put_failure:
7177 genlmsg_cancel(msg, hdr);
7178 return -EMSGSIZE;
7179 }
7180
7181 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7182 {
7183 struct cfg80211_registered_device *rdev;
7184 struct cfg80211_internal_bss *scan;
7185 struct wireless_dev *wdev;
7186 int start = cb->args[2], idx = 0;
7187 int err;
7188
7189 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7190 if (err)
7191 return err;
7192
7193 wdev_lock(wdev);
7194 spin_lock_bh(&rdev->bss_lock);
7195 cfg80211_bss_expire(rdev);
7196
7197 cb->seq = rdev->bss_generation;
7198
7199 list_for_each_entry(scan, &rdev->bss_list, list) {
7200 if (++idx <= start)
7201 continue;
7202 if (nl80211_send_bss(skb, cb,
7203 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7204 rdev, wdev, scan) < 0) {
7205 idx--;
7206 break;
7207 }
7208 }
7209
7210 spin_unlock_bh(&rdev->bss_lock);
7211 wdev_unlock(wdev);
7212
7213 cb->args[2] = idx;
7214 nl80211_finish_wdev_dump(rdev);
7215
7216 return skb->len;
7217 }
7218
7219 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7220 int flags, struct net_device *dev,
7221 bool allow_radio_stats,
7222 struct survey_info *survey)
7223 {
7224 void *hdr;
7225 struct nlattr *infoattr;
7226
7227 /* skip radio stats if userspace didn't request them */
7228 if (!survey->channel && !allow_radio_stats)
7229 return 0;
7230
7231 hdr = nl80211hdr_put(msg, portid, seq, flags,
7232 NL80211_CMD_NEW_SURVEY_RESULTS);
7233 if (!hdr)
7234 return -ENOMEM;
7235
7236 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7237 goto nla_put_failure;
7238
7239 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7240 if (!infoattr)
7241 goto nla_put_failure;
7242
7243 if (survey->channel &&
7244 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7245 survey->channel->center_freq))
7246 goto nla_put_failure;
7247
7248 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7249 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7250 goto nla_put_failure;
7251 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7252 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7253 goto nla_put_failure;
7254 if ((survey->filled & SURVEY_INFO_TIME) &&
7255 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7256 survey->time, NL80211_SURVEY_INFO_PAD))
7257 goto nla_put_failure;
7258 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7259 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7260 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7261 goto nla_put_failure;
7262 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7263 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7264 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7265 goto nla_put_failure;
7266 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7267 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7268 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7269 goto nla_put_failure;
7270 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7271 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7272 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7273 goto nla_put_failure;
7274 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7275 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7276 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7277 goto nla_put_failure;
7278
7279 nla_nest_end(msg, infoattr);
7280
7281 genlmsg_end(msg, hdr);
7282 return 0;
7283
7284 nla_put_failure:
7285 genlmsg_cancel(msg, hdr);
7286 return -EMSGSIZE;
7287 }
7288
7289 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7290 {
7291 struct survey_info survey;
7292 struct cfg80211_registered_device *rdev;
7293 struct wireless_dev *wdev;
7294 int survey_idx = cb->args[2];
7295 int res;
7296 bool radio_stats;
7297
7298 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7299 if (res)
7300 return res;
7301
7302 /* prepare_wdev_dump parsed the attributes */
7303 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7304
7305 if (!wdev->netdev) {
7306 res = -EINVAL;
7307 goto out_err;
7308 }
7309
7310 if (!rdev->ops->dump_survey) {
7311 res = -EOPNOTSUPP;
7312 goto out_err;
7313 }
7314
7315 while (1) {
7316 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7317 if (res == -ENOENT)
7318 break;
7319 if (res)
7320 goto out_err;
7321
7322 /* don't send disabled channels, but do send non-channel data */
7323 if (survey.channel &&
7324 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7325 survey_idx++;
7326 continue;
7327 }
7328
7329 if (nl80211_send_survey(skb,
7330 NETLINK_CB(cb->skb).portid,
7331 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7332 wdev->netdev, radio_stats, &survey) < 0)
7333 goto out;
7334 survey_idx++;
7335 }
7336
7337 out:
7338 cb->args[2] = survey_idx;
7339 res = skb->len;
7340 out_err:
7341 nl80211_finish_wdev_dump(rdev);
7342 return res;
7343 }
7344
7345 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7346 {
7347 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7348 NL80211_WPA_VERSION_2));
7349 }
7350
7351 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7352 {
7353 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7354 struct net_device *dev = info->user_ptr[1];
7355 struct ieee80211_channel *chan;
7356 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
7357 int err, ssid_len, ie_len = 0, sae_data_len = 0;
7358 enum nl80211_auth_type auth_type;
7359 struct key_parse key;
7360 bool local_state_change;
7361
7362 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7363 return -EINVAL;
7364
7365 if (!info->attrs[NL80211_ATTR_MAC])
7366 return -EINVAL;
7367
7368 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7369 return -EINVAL;
7370
7371 if (!info->attrs[NL80211_ATTR_SSID])
7372 return -EINVAL;
7373
7374 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7375 return -EINVAL;
7376
7377 err = nl80211_parse_key(info, &key);
7378 if (err)
7379 return err;
7380
7381 if (key.idx >= 0) {
7382 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7383 return -EINVAL;
7384 if (!key.p.key || !key.p.key_len)
7385 return -EINVAL;
7386 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7387 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7388 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7389 key.p.key_len != WLAN_KEY_LEN_WEP104))
7390 return -EINVAL;
7391 if (key.idx > 4)
7392 return -EINVAL;
7393 } else {
7394 key.p.key_len = 0;
7395 key.p.key = NULL;
7396 }
7397
7398 if (key.idx >= 0) {
7399 int i;
7400 bool ok = false;
7401
7402 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7403 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7404 ok = true;
7405 break;
7406 }
7407 }
7408 if (!ok)
7409 return -EINVAL;
7410 }
7411
7412 if (!rdev->ops->auth)
7413 return -EOPNOTSUPP;
7414
7415 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7416 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7417 return -EOPNOTSUPP;
7418
7419 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7420 chan = nl80211_get_valid_chan(&rdev->wiphy,
7421 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7422 if (!chan)
7423 return -EINVAL;
7424
7425 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7426 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7427
7428 if (info->attrs[NL80211_ATTR_IE]) {
7429 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7430 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7431 }
7432
7433 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7434 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7435 return -EINVAL;
7436
7437 if (auth_type == NL80211_AUTHTYPE_SAE &&
7438 !info->attrs[NL80211_ATTR_SAE_DATA])
7439 return -EINVAL;
7440
7441 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7442 if (auth_type != NL80211_AUTHTYPE_SAE)
7443 return -EINVAL;
7444 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7445 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7446 /* need to include at least Auth Transaction and Status Code */
7447 if (sae_data_len < 4)
7448 return -EINVAL;
7449 }
7450
7451 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7452
7453 /*
7454 * Since we no longer track auth state, ignore
7455 * requests to only change local state.
7456 */
7457 if (local_state_change)
7458 return 0;
7459
7460 wdev_lock(dev->ieee80211_ptr);
7461 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7462 ssid, ssid_len, ie, ie_len,
7463 key.p.key, key.p.key_len, key.idx,
7464 sae_data, sae_data_len);
7465 wdev_unlock(dev->ieee80211_ptr);
7466 return err;
7467 }
7468
7469 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7470 struct genl_info *info,
7471 struct cfg80211_crypto_settings *settings,
7472 int cipher_limit)
7473 {
7474 memset(settings, 0, sizeof(*settings));
7475
7476 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7477
7478 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7479 u16 proto;
7480
7481 proto = nla_get_u16(
7482 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7483 settings->control_port_ethertype = cpu_to_be16(proto);
7484 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7485 proto != ETH_P_PAE)
7486 return -EINVAL;
7487 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7488 settings->control_port_no_encrypt = true;
7489 } else
7490 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7491
7492 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7493 void *data;
7494 int len, i;
7495
7496 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7497 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7498 settings->n_ciphers_pairwise = len / sizeof(u32);
7499
7500 if (len % sizeof(u32))
7501 return -EINVAL;
7502
7503 if (settings->n_ciphers_pairwise > cipher_limit)
7504 return -EINVAL;
7505
7506 memcpy(settings->ciphers_pairwise, data, len);
7507
7508 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7509 if (!cfg80211_supported_cipher_suite(
7510 &rdev->wiphy,
7511 settings->ciphers_pairwise[i]))
7512 return -EINVAL;
7513 }
7514
7515 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7516 settings->cipher_group =
7517 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7518 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7519 settings->cipher_group))
7520 return -EINVAL;
7521 }
7522
7523 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7524 settings->wpa_versions =
7525 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7526 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7527 return -EINVAL;
7528 }
7529
7530 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7531 void *data;
7532 int len;
7533
7534 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7535 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7536 settings->n_akm_suites = len / sizeof(u32);
7537
7538 if (len % sizeof(u32))
7539 return -EINVAL;
7540
7541 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7542 return -EINVAL;
7543
7544 memcpy(settings->akm_suites, data, len);
7545 }
7546
7547 return 0;
7548 }
7549
7550 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7551 {
7552 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7553 struct net_device *dev = info->user_ptr[1];
7554 struct ieee80211_channel *chan;
7555 struct cfg80211_assoc_request req = {};
7556 const u8 *bssid, *ssid;
7557 int err, ssid_len = 0;
7558
7559 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7560 return -EINVAL;
7561
7562 if (!info->attrs[NL80211_ATTR_MAC] ||
7563 !info->attrs[NL80211_ATTR_SSID] ||
7564 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7565 return -EINVAL;
7566
7567 if (!rdev->ops->assoc)
7568 return -EOPNOTSUPP;
7569
7570 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7571 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7572 return -EOPNOTSUPP;
7573
7574 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7575
7576 chan = nl80211_get_valid_chan(&rdev->wiphy,
7577 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7578 if (!chan)
7579 return -EINVAL;
7580
7581 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7582 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7583
7584 if (info->attrs[NL80211_ATTR_IE]) {
7585 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7586 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7587 }
7588
7589 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7590 enum nl80211_mfp mfp =
7591 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7592 if (mfp == NL80211_MFP_REQUIRED)
7593 req.use_mfp = true;
7594 else if (mfp != NL80211_MFP_NO)
7595 return -EINVAL;
7596 }
7597
7598 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7599 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7600
7601 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7602 req.flags |= ASSOC_REQ_DISABLE_HT;
7603
7604 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7605 memcpy(&req.ht_capa_mask,
7606 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7607 sizeof(req.ht_capa_mask));
7608
7609 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7610 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7611 return -EINVAL;
7612 memcpy(&req.ht_capa,
7613 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7614 sizeof(req.ht_capa));
7615 }
7616
7617 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7618 req.flags |= ASSOC_REQ_DISABLE_VHT;
7619
7620 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7621 memcpy(&req.vht_capa_mask,
7622 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7623 sizeof(req.vht_capa_mask));
7624
7625 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7626 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7627 return -EINVAL;
7628 memcpy(&req.vht_capa,
7629 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7630 sizeof(req.vht_capa));
7631 }
7632
7633 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7634 if (!((rdev->wiphy.features &
7635 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
7636 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
7637 !wiphy_ext_feature_isset(&rdev->wiphy,
7638 NL80211_EXT_FEATURE_RRM))
7639 return -EINVAL;
7640 req.flags |= ASSOC_REQ_USE_RRM;
7641 }
7642
7643 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7644 if (!err) {
7645 wdev_lock(dev->ieee80211_ptr);
7646 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7647 ssid, ssid_len, &req);
7648 wdev_unlock(dev->ieee80211_ptr);
7649 }
7650
7651 return err;
7652 }
7653
7654 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7655 {
7656 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7657 struct net_device *dev = info->user_ptr[1];
7658 const u8 *ie = NULL, *bssid;
7659 int ie_len = 0, err;
7660 u16 reason_code;
7661 bool local_state_change;
7662
7663 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7664 return -EINVAL;
7665
7666 if (!info->attrs[NL80211_ATTR_MAC])
7667 return -EINVAL;
7668
7669 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7670 return -EINVAL;
7671
7672 if (!rdev->ops->deauth)
7673 return -EOPNOTSUPP;
7674
7675 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7676 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7677 return -EOPNOTSUPP;
7678
7679 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7680
7681 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7682 if (reason_code == 0) {
7683 /* Reason Code 0 is reserved */
7684 return -EINVAL;
7685 }
7686
7687 if (info->attrs[NL80211_ATTR_IE]) {
7688 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7689 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7690 }
7691
7692 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7693
7694 wdev_lock(dev->ieee80211_ptr);
7695 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7696 local_state_change);
7697 wdev_unlock(dev->ieee80211_ptr);
7698 return err;
7699 }
7700
7701 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7702 {
7703 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7704 struct net_device *dev = info->user_ptr[1];
7705 const u8 *ie = NULL, *bssid;
7706 int ie_len = 0, err;
7707 u16 reason_code;
7708 bool local_state_change;
7709
7710 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7711 return -EINVAL;
7712
7713 if (!info->attrs[NL80211_ATTR_MAC])
7714 return -EINVAL;
7715
7716 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7717 return -EINVAL;
7718
7719 if (!rdev->ops->disassoc)
7720 return -EOPNOTSUPP;
7721
7722 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7723 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7724 return -EOPNOTSUPP;
7725
7726 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7727
7728 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7729 if (reason_code == 0) {
7730 /* Reason Code 0 is reserved */
7731 return -EINVAL;
7732 }
7733
7734 if (info->attrs[NL80211_ATTR_IE]) {
7735 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7736 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7737 }
7738
7739 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7740
7741 wdev_lock(dev->ieee80211_ptr);
7742 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7743 local_state_change);
7744 wdev_unlock(dev->ieee80211_ptr);
7745 return err;
7746 }
7747
7748 static bool
7749 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7750 int mcast_rate[NUM_NL80211_BANDS],
7751 int rateval)
7752 {
7753 struct wiphy *wiphy = &rdev->wiphy;
7754 bool found = false;
7755 int band, i;
7756
7757 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7758 struct ieee80211_supported_band *sband;
7759
7760 sband = wiphy->bands[band];
7761 if (!sband)
7762 continue;
7763
7764 for (i = 0; i < sband->n_bitrates; i++) {
7765 if (sband->bitrates[i].bitrate == rateval) {
7766 mcast_rate[band] = i + 1;
7767 found = true;
7768 break;
7769 }
7770 }
7771 }
7772
7773 return found;
7774 }
7775
7776 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7777 {
7778 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7779 struct net_device *dev = info->user_ptr[1];
7780 struct cfg80211_ibss_params ibss;
7781 struct wiphy *wiphy;
7782 struct cfg80211_cached_keys *connkeys = NULL;
7783 int err;
7784
7785 memset(&ibss, 0, sizeof(ibss));
7786
7787 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7788 return -EINVAL;
7789
7790 if (!info->attrs[NL80211_ATTR_SSID] ||
7791 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7792 return -EINVAL;
7793
7794 ibss.beacon_interval = 100;
7795
7796 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
7797 ibss.beacon_interval =
7798 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7799
7800 err = cfg80211_validate_beacon_int(rdev, ibss.beacon_interval);
7801 if (err)
7802 return err;
7803
7804 if (!rdev->ops->join_ibss)
7805 return -EOPNOTSUPP;
7806
7807 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7808 return -EOPNOTSUPP;
7809
7810 wiphy = &rdev->wiphy;
7811
7812 if (info->attrs[NL80211_ATTR_MAC]) {
7813 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7814
7815 if (!is_valid_ether_addr(ibss.bssid))
7816 return -EINVAL;
7817 }
7818 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7819 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7820
7821 if (info->attrs[NL80211_ATTR_IE]) {
7822 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7823 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7824 }
7825
7826 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7827 if (err)
7828 return err;
7829
7830 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7831 NL80211_IFTYPE_ADHOC))
7832 return -EINVAL;
7833
7834 switch (ibss.chandef.width) {
7835 case NL80211_CHAN_WIDTH_5:
7836 case NL80211_CHAN_WIDTH_10:
7837 case NL80211_CHAN_WIDTH_20_NOHT:
7838 break;
7839 case NL80211_CHAN_WIDTH_20:
7840 case NL80211_CHAN_WIDTH_40:
7841 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7842 return -EINVAL;
7843 break;
7844 case NL80211_CHAN_WIDTH_80:
7845 case NL80211_CHAN_WIDTH_80P80:
7846 case NL80211_CHAN_WIDTH_160:
7847 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7848 return -EINVAL;
7849 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7850 NL80211_EXT_FEATURE_VHT_IBSS))
7851 return -EINVAL;
7852 break;
7853 default:
7854 return -EINVAL;
7855 }
7856
7857 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7858 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7859
7860 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7861 u8 *rates =
7862 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7863 int n_rates =
7864 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7865 struct ieee80211_supported_band *sband =
7866 wiphy->bands[ibss.chandef.chan->band];
7867
7868 err = ieee80211_get_ratemask(sband, rates, n_rates,
7869 &ibss.basic_rates);
7870 if (err)
7871 return err;
7872 }
7873
7874 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7875 memcpy(&ibss.ht_capa_mask,
7876 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7877 sizeof(ibss.ht_capa_mask));
7878
7879 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7880 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7881 return -EINVAL;
7882 memcpy(&ibss.ht_capa,
7883 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7884 sizeof(ibss.ht_capa));
7885 }
7886
7887 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7888 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7889 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7890 return -EINVAL;
7891
7892 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7893 bool no_ht = false;
7894
7895 connkeys = nl80211_parse_connkeys(rdev,
7896 info->attrs[NL80211_ATTR_KEYS],
7897 &no_ht);
7898 if (IS_ERR(connkeys))
7899 return PTR_ERR(connkeys);
7900
7901 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7902 no_ht) {
7903 kzfree(connkeys);
7904 return -EINVAL;
7905 }
7906 }
7907
7908 ibss.control_port =
7909 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7910
7911 ibss.userspace_handles_dfs =
7912 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7913
7914 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7915 if (err)
7916 kzfree(connkeys);
7917 return err;
7918 }
7919
7920 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7921 {
7922 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7923 struct net_device *dev = info->user_ptr[1];
7924
7925 if (!rdev->ops->leave_ibss)
7926 return -EOPNOTSUPP;
7927
7928 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7929 return -EOPNOTSUPP;
7930
7931 return cfg80211_leave_ibss(rdev, dev, false);
7932 }
7933
7934 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7935 {
7936 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7937 struct net_device *dev = info->user_ptr[1];
7938 int mcast_rate[NUM_NL80211_BANDS];
7939 u32 nla_rate;
7940 int err;
7941
7942 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7943 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7944 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7945 return -EOPNOTSUPP;
7946
7947 if (!rdev->ops->set_mcast_rate)
7948 return -EOPNOTSUPP;
7949
7950 memset(mcast_rate, 0, sizeof(mcast_rate));
7951
7952 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7953 return -EINVAL;
7954
7955 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7956 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7957 return -EINVAL;
7958
7959 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
7960
7961 return err;
7962 }
7963
7964 static struct sk_buff *
7965 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7966 struct wireless_dev *wdev, int approxlen,
7967 u32 portid, u32 seq, enum nl80211_commands cmd,
7968 enum nl80211_attrs attr,
7969 const struct nl80211_vendor_cmd_info *info,
7970 gfp_t gfp)
7971 {
7972 struct sk_buff *skb;
7973 void *hdr;
7974 struct nlattr *data;
7975
7976 skb = nlmsg_new(approxlen + 100, gfp);
7977 if (!skb)
7978 return NULL;
7979
7980 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7981 if (!hdr) {
7982 kfree_skb(skb);
7983 return NULL;
7984 }
7985
7986 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7987 goto nla_put_failure;
7988
7989 if (info) {
7990 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7991 info->vendor_id))
7992 goto nla_put_failure;
7993 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7994 info->subcmd))
7995 goto nla_put_failure;
7996 }
7997
7998 if (wdev) {
7999 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8000 wdev_id(wdev), NL80211_ATTR_PAD))
8001 goto nla_put_failure;
8002 if (wdev->netdev &&
8003 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8004 wdev->netdev->ifindex))
8005 goto nla_put_failure;
8006 }
8007
8008 data = nla_nest_start(skb, attr);
8009
8010 ((void **)skb->cb)[0] = rdev;
8011 ((void **)skb->cb)[1] = hdr;
8012 ((void **)skb->cb)[2] = data;
8013
8014 return skb;
8015
8016 nla_put_failure:
8017 kfree_skb(skb);
8018 return NULL;
8019 }
8020
8021 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8022 struct wireless_dev *wdev,
8023 enum nl80211_commands cmd,
8024 enum nl80211_attrs attr,
8025 int vendor_event_idx,
8026 int approxlen, gfp_t gfp)
8027 {
8028 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8029 const struct nl80211_vendor_cmd_info *info;
8030
8031 switch (cmd) {
8032 case NL80211_CMD_TESTMODE:
8033 if (WARN_ON(vendor_event_idx != -1))
8034 return NULL;
8035 info = NULL;
8036 break;
8037 case NL80211_CMD_VENDOR:
8038 if (WARN_ON(vendor_event_idx < 0 ||
8039 vendor_event_idx >= wiphy->n_vendor_events))
8040 return NULL;
8041 info = &wiphy->vendor_events[vendor_event_idx];
8042 break;
8043 default:
8044 WARN_ON(1);
8045 return NULL;
8046 }
8047
8048 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8049 cmd, attr, info, gfp);
8050 }
8051 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8052
8053 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8054 {
8055 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8056 void *hdr = ((void **)skb->cb)[1];
8057 struct nlattr *data = ((void **)skb->cb)[2];
8058 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8059
8060 /* clear CB data for netlink core to own from now on */
8061 memset(skb->cb, 0, sizeof(skb->cb));
8062
8063 nla_nest_end(skb, data);
8064 genlmsg_end(skb, hdr);
8065
8066 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8067 mcgrp = NL80211_MCGRP_VENDOR;
8068
8069 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8070 mcgrp, gfp);
8071 }
8072 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8073
8074 #ifdef CONFIG_NL80211_TESTMODE
8075 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8076 {
8077 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8078 struct wireless_dev *wdev =
8079 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8080 int err;
8081
8082 if (!rdev->ops->testmode_cmd)
8083 return -EOPNOTSUPP;
8084
8085 if (IS_ERR(wdev)) {
8086 err = PTR_ERR(wdev);
8087 if (err != -EINVAL)
8088 return err;
8089 wdev = NULL;
8090 } else if (wdev->wiphy != &rdev->wiphy) {
8091 return -EINVAL;
8092 }
8093
8094 if (!info->attrs[NL80211_ATTR_TESTDATA])
8095 return -EINVAL;
8096
8097 rdev->cur_cmd_info = info;
8098 err = rdev_testmode_cmd(rdev, wdev,
8099 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8100 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8101 rdev->cur_cmd_info = NULL;
8102
8103 return err;
8104 }
8105
8106 static int nl80211_testmode_dump(struct sk_buff *skb,
8107 struct netlink_callback *cb)
8108 {
8109 struct cfg80211_registered_device *rdev;
8110 int err;
8111 long phy_idx;
8112 void *data = NULL;
8113 int data_len = 0;
8114
8115 rtnl_lock();
8116
8117 if (cb->args[0]) {
8118 /*
8119 * 0 is a valid index, but not valid for args[0],
8120 * so we need to offset by 1.
8121 */
8122 phy_idx = cb->args[0] - 1;
8123 } else {
8124 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8125 nl80211_fam.attrbuf, nl80211_fam.maxattr,
8126 nl80211_policy);
8127 if (err)
8128 goto out_err;
8129
8130 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
8131 nl80211_fam.attrbuf);
8132 if (IS_ERR(rdev)) {
8133 err = PTR_ERR(rdev);
8134 goto out_err;
8135 }
8136 phy_idx = rdev->wiphy_idx;
8137 rdev = NULL;
8138
8139 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
8140 cb->args[1] =
8141 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
8142 }
8143
8144 if (cb->args[1]) {
8145 data = nla_data((void *)cb->args[1]);
8146 data_len = nla_len((void *)cb->args[1]);
8147 }
8148
8149 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8150 if (!rdev) {
8151 err = -ENOENT;
8152 goto out_err;
8153 }
8154
8155 if (!rdev->ops->testmode_dump) {
8156 err = -EOPNOTSUPP;
8157 goto out_err;
8158 }
8159
8160 while (1) {
8161 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8162 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8163 NL80211_CMD_TESTMODE);
8164 struct nlattr *tmdata;
8165
8166 if (!hdr)
8167 break;
8168
8169 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8170 genlmsg_cancel(skb, hdr);
8171 break;
8172 }
8173
8174 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8175 if (!tmdata) {
8176 genlmsg_cancel(skb, hdr);
8177 break;
8178 }
8179 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8180 nla_nest_end(skb, tmdata);
8181
8182 if (err == -ENOBUFS || err == -ENOENT) {
8183 genlmsg_cancel(skb, hdr);
8184 break;
8185 } else if (err) {
8186 genlmsg_cancel(skb, hdr);
8187 goto out_err;
8188 }
8189
8190 genlmsg_end(skb, hdr);
8191 }
8192
8193 err = skb->len;
8194 /* see above */
8195 cb->args[0] = phy_idx + 1;
8196 out_err:
8197 rtnl_unlock();
8198 return err;
8199 }
8200 #endif
8201
8202 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8203 {
8204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8205 struct net_device *dev = info->user_ptr[1];
8206 struct cfg80211_connect_params connect;
8207 struct wiphy *wiphy;
8208 struct cfg80211_cached_keys *connkeys = NULL;
8209 int err;
8210
8211 memset(&connect, 0, sizeof(connect));
8212
8213 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8214 return -EINVAL;
8215
8216 if (!info->attrs[NL80211_ATTR_SSID] ||
8217 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8218 return -EINVAL;
8219
8220 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8221 connect.auth_type =
8222 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8223 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8224 NL80211_CMD_CONNECT))
8225 return -EINVAL;
8226 } else
8227 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8228
8229 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8230
8231 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8232 NL80211_MAX_NR_CIPHER_SUITES);
8233 if (err)
8234 return err;
8235
8236 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8237 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8238 return -EOPNOTSUPP;
8239
8240 wiphy = &rdev->wiphy;
8241
8242 connect.bg_scan_period = -1;
8243 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8244 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8245 connect.bg_scan_period =
8246 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8247 }
8248
8249 if (info->attrs[NL80211_ATTR_MAC])
8250 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8251 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8252 connect.bssid_hint =
8253 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8254 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8255 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8256
8257 if (info->attrs[NL80211_ATTR_IE]) {
8258 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8259 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8260 }
8261
8262 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8263 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8264 if (connect.mfp != NL80211_MFP_REQUIRED &&
8265 connect.mfp != NL80211_MFP_NO)
8266 return -EINVAL;
8267 } else {
8268 connect.mfp = NL80211_MFP_NO;
8269 }
8270
8271 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8272 connect.prev_bssid =
8273 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8274
8275 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8276 connect.channel = nl80211_get_valid_chan(
8277 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8278 if (!connect.channel)
8279 return -EINVAL;
8280 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8281 connect.channel_hint = nl80211_get_valid_chan(
8282 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8283 if (!connect.channel_hint)
8284 return -EINVAL;
8285 }
8286
8287 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8288 connkeys = nl80211_parse_connkeys(rdev,
8289 info->attrs[NL80211_ATTR_KEYS], NULL);
8290 if (IS_ERR(connkeys))
8291 return PTR_ERR(connkeys);
8292 }
8293
8294 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8295 connect.flags |= ASSOC_REQ_DISABLE_HT;
8296
8297 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8298 memcpy(&connect.ht_capa_mask,
8299 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8300 sizeof(connect.ht_capa_mask));
8301
8302 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8303 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8304 kzfree(connkeys);
8305 return -EINVAL;
8306 }
8307 memcpy(&connect.ht_capa,
8308 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8309 sizeof(connect.ht_capa));
8310 }
8311
8312 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8313 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8314
8315 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8316 memcpy(&connect.vht_capa_mask,
8317 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8318 sizeof(connect.vht_capa_mask));
8319
8320 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8321 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8322 kzfree(connkeys);
8323 return -EINVAL;
8324 }
8325 memcpy(&connect.vht_capa,
8326 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8327 sizeof(connect.vht_capa));
8328 }
8329
8330 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8331 if (!((rdev->wiphy.features &
8332 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8333 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8334 !wiphy_ext_feature_isset(&rdev->wiphy,
8335 NL80211_EXT_FEATURE_RRM)) {
8336 kzfree(connkeys);
8337 return -EINVAL;
8338 }
8339 connect.flags |= ASSOC_REQ_USE_RRM;
8340 }
8341
8342 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8343 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8344 kzfree(connkeys);
8345 return -EOPNOTSUPP;
8346 }
8347
8348 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8349 /* bss selection makes no sense if bssid is set */
8350 if (connect.bssid) {
8351 kzfree(connkeys);
8352 return -EINVAL;
8353 }
8354
8355 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8356 wiphy, &connect.bss_select);
8357 if (err) {
8358 kzfree(connkeys);
8359 return err;
8360 }
8361 }
8362
8363 wdev_lock(dev->ieee80211_ptr);
8364 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8365 connect.prev_bssid);
8366 wdev_unlock(dev->ieee80211_ptr);
8367 if (err)
8368 kzfree(connkeys);
8369 return err;
8370 }
8371
8372 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8373 {
8374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8375 struct net_device *dev = info->user_ptr[1];
8376 u16 reason;
8377 int ret;
8378
8379 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8380 reason = WLAN_REASON_DEAUTH_LEAVING;
8381 else
8382 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8383
8384 if (reason == 0)
8385 return -EINVAL;
8386
8387 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8388 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8389 return -EOPNOTSUPP;
8390
8391 wdev_lock(dev->ieee80211_ptr);
8392 ret = cfg80211_disconnect(rdev, dev, reason, true);
8393 wdev_unlock(dev->ieee80211_ptr);
8394 return ret;
8395 }
8396
8397 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8398 {
8399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8400 struct net *net;
8401 int err;
8402
8403 if (info->attrs[NL80211_ATTR_PID]) {
8404 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8405
8406 net = get_net_ns_by_pid(pid);
8407 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8408 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8409
8410 net = get_net_ns_by_fd(fd);
8411 } else {
8412 return -EINVAL;
8413 }
8414
8415 if (IS_ERR(net))
8416 return PTR_ERR(net);
8417
8418 err = 0;
8419
8420 /* check if anything to do */
8421 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8422 err = cfg80211_switch_netns(rdev, net);
8423
8424 put_net(net);
8425 return err;
8426 }
8427
8428 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8429 {
8430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8431 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8432 struct cfg80211_pmksa *pmksa) = NULL;
8433 struct net_device *dev = info->user_ptr[1];
8434 struct cfg80211_pmksa pmksa;
8435
8436 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8437
8438 if (!info->attrs[NL80211_ATTR_MAC])
8439 return -EINVAL;
8440
8441 if (!info->attrs[NL80211_ATTR_PMKID])
8442 return -EINVAL;
8443
8444 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8445 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8446
8447 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8448 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8449 return -EOPNOTSUPP;
8450
8451 switch (info->genlhdr->cmd) {
8452 case NL80211_CMD_SET_PMKSA:
8453 rdev_ops = rdev->ops->set_pmksa;
8454 break;
8455 case NL80211_CMD_DEL_PMKSA:
8456 rdev_ops = rdev->ops->del_pmksa;
8457 break;
8458 default:
8459 WARN_ON(1);
8460 break;
8461 }
8462
8463 if (!rdev_ops)
8464 return -EOPNOTSUPP;
8465
8466 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8467 }
8468
8469 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8470 {
8471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8472 struct net_device *dev = info->user_ptr[1];
8473
8474 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8475 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8476 return -EOPNOTSUPP;
8477
8478 if (!rdev->ops->flush_pmksa)
8479 return -EOPNOTSUPP;
8480
8481 return rdev_flush_pmksa(rdev, dev);
8482 }
8483
8484 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8485 {
8486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8487 struct net_device *dev = info->user_ptr[1];
8488 u8 action_code, dialog_token;
8489 u32 peer_capability = 0;
8490 u16 status_code;
8491 u8 *peer;
8492 bool initiator;
8493
8494 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8495 !rdev->ops->tdls_mgmt)
8496 return -EOPNOTSUPP;
8497
8498 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8499 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8500 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8501 !info->attrs[NL80211_ATTR_IE] ||
8502 !info->attrs[NL80211_ATTR_MAC])
8503 return -EINVAL;
8504
8505 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8506 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8507 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8508 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8509 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8510 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8511 peer_capability =
8512 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8513
8514 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8515 dialog_token, status_code, peer_capability,
8516 initiator,
8517 nla_data(info->attrs[NL80211_ATTR_IE]),
8518 nla_len(info->attrs[NL80211_ATTR_IE]));
8519 }
8520
8521 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8522 {
8523 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8524 struct net_device *dev = info->user_ptr[1];
8525 enum nl80211_tdls_operation operation;
8526 u8 *peer;
8527
8528 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8529 !rdev->ops->tdls_oper)
8530 return -EOPNOTSUPP;
8531
8532 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8533 !info->attrs[NL80211_ATTR_MAC])
8534 return -EINVAL;
8535
8536 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8537 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8538
8539 return rdev_tdls_oper(rdev, dev, peer, operation);
8540 }
8541
8542 static int nl80211_remain_on_channel(struct sk_buff *skb,
8543 struct genl_info *info)
8544 {
8545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8546 struct wireless_dev *wdev = info->user_ptr[1];
8547 struct cfg80211_chan_def chandef;
8548 struct sk_buff *msg;
8549 void *hdr;
8550 u64 cookie;
8551 u32 duration;
8552 int err;
8553
8554 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8555 !info->attrs[NL80211_ATTR_DURATION])
8556 return -EINVAL;
8557
8558 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8559
8560 if (!rdev->ops->remain_on_channel ||
8561 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8562 return -EOPNOTSUPP;
8563
8564 /*
8565 * We should be on that channel for at least a minimum amount of
8566 * time (10ms) but no longer than the driver supports.
8567 */
8568 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8569 duration > rdev->wiphy.max_remain_on_channel_duration)
8570 return -EINVAL;
8571
8572 err = nl80211_parse_chandef(rdev, info, &chandef);
8573 if (err)
8574 return err;
8575
8576 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8577 if (!msg)
8578 return -ENOMEM;
8579
8580 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8581 NL80211_CMD_REMAIN_ON_CHANNEL);
8582 if (!hdr) {
8583 err = -ENOBUFS;
8584 goto free_msg;
8585 }
8586
8587 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8588 duration, &cookie);
8589
8590 if (err)
8591 goto free_msg;
8592
8593 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
8594 NL80211_ATTR_PAD))
8595 goto nla_put_failure;
8596
8597 genlmsg_end(msg, hdr);
8598
8599 return genlmsg_reply(msg, info);
8600
8601 nla_put_failure:
8602 err = -ENOBUFS;
8603 free_msg:
8604 nlmsg_free(msg);
8605 return err;
8606 }
8607
8608 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8609 struct genl_info *info)
8610 {
8611 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8612 struct wireless_dev *wdev = info->user_ptr[1];
8613 u64 cookie;
8614
8615 if (!info->attrs[NL80211_ATTR_COOKIE])
8616 return -EINVAL;
8617
8618 if (!rdev->ops->cancel_remain_on_channel)
8619 return -EOPNOTSUPP;
8620
8621 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8622
8623 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8624 }
8625
8626 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8627 u8 *rates, u8 rates_len)
8628 {
8629 u8 i;
8630 u32 mask = 0;
8631
8632 for (i = 0; i < rates_len; i++) {
8633 int rate = (rates[i] & 0x7f) * 5;
8634 int ridx;
8635
8636 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8637 struct ieee80211_rate *srate =
8638 &sband->bitrates[ridx];
8639 if (rate == srate->bitrate) {
8640 mask |= 1 << ridx;
8641 break;
8642 }
8643 }
8644 if (ridx == sband->n_bitrates)
8645 return 0; /* rate not found */
8646 }
8647
8648 return mask;
8649 }
8650
8651 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8652 u8 *rates, u8 rates_len,
8653 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8654 {
8655 u8 i;
8656
8657 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8658
8659 for (i = 0; i < rates_len; i++) {
8660 int ridx, rbit;
8661
8662 ridx = rates[i] / 8;
8663 rbit = BIT(rates[i] % 8);
8664
8665 /* check validity */
8666 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8667 return false;
8668
8669 /* check availability */
8670 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8671 mcs[ridx] |= rbit;
8672 else
8673 return false;
8674 }
8675
8676 return true;
8677 }
8678
8679 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8680 {
8681 u16 mcs_mask = 0;
8682
8683 switch (vht_mcs_map) {
8684 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8685 break;
8686 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8687 mcs_mask = 0x00FF;
8688 break;
8689 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8690 mcs_mask = 0x01FF;
8691 break;
8692 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8693 mcs_mask = 0x03FF;
8694 break;
8695 default:
8696 break;
8697 }
8698
8699 return mcs_mask;
8700 }
8701
8702 static void vht_build_mcs_mask(u16 vht_mcs_map,
8703 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8704 {
8705 u8 nss;
8706
8707 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8708 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8709 vht_mcs_map >>= 2;
8710 }
8711 }
8712
8713 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8714 struct nl80211_txrate_vht *txrate,
8715 u16 mcs[NL80211_VHT_NSS_MAX])
8716 {
8717 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8718 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8719 u8 i;
8720
8721 if (!sband->vht_cap.vht_supported)
8722 return false;
8723
8724 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8725
8726 /* Build vht_mcs_mask from VHT capabilities */
8727 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8728
8729 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8730 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8731 mcs[i] = txrate->mcs[i];
8732 else
8733 return false;
8734 }
8735
8736 return true;
8737 }
8738
8739 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8740 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8741 .len = NL80211_MAX_SUPP_RATES },
8742 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8743 .len = NL80211_MAX_SUPP_HT_RATES },
8744 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8745 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8746 };
8747
8748 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8749 struct genl_info *info)
8750 {
8751 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8752 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8753 struct cfg80211_bitrate_mask mask;
8754 int rem, i;
8755 struct net_device *dev = info->user_ptr[1];
8756 struct nlattr *tx_rates;
8757 struct ieee80211_supported_band *sband;
8758 u16 vht_tx_mcs_map;
8759
8760 if (!rdev->ops->set_bitrate_mask)
8761 return -EOPNOTSUPP;
8762
8763 memset(&mask, 0, sizeof(mask));
8764 /* Default to all rates enabled */
8765 for (i = 0; i < NUM_NL80211_BANDS; i++) {
8766 sband = rdev->wiphy.bands[i];
8767
8768 if (!sband)
8769 continue;
8770
8771 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8772 memcpy(mask.control[i].ht_mcs,
8773 sband->ht_cap.mcs.rx_mask,
8774 sizeof(mask.control[i].ht_mcs));
8775
8776 if (!sband->vht_cap.vht_supported)
8777 continue;
8778
8779 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8780 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8781 }
8782
8783 /* if no rates are given set it back to the defaults */
8784 if (!info->attrs[NL80211_ATTR_TX_RATES])
8785 goto out;
8786
8787 /*
8788 * The nested attribute uses enum nl80211_band as the index. This maps
8789 * directly to the enum nl80211_band values used in cfg80211.
8790 */
8791 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8792 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8793 enum nl80211_band band = nla_type(tx_rates);
8794 int err;
8795
8796 if (band < 0 || band >= NUM_NL80211_BANDS)
8797 return -EINVAL;
8798 sband = rdev->wiphy.bands[band];
8799 if (sband == NULL)
8800 return -EINVAL;
8801 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8802 nla_len(tx_rates), nl80211_txattr_policy);
8803 if (err)
8804 return err;
8805 if (tb[NL80211_TXRATE_LEGACY]) {
8806 mask.control[band].legacy = rateset_to_mask(
8807 sband,
8808 nla_data(tb[NL80211_TXRATE_LEGACY]),
8809 nla_len(tb[NL80211_TXRATE_LEGACY]));
8810 if ((mask.control[band].legacy == 0) &&
8811 nla_len(tb[NL80211_TXRATE_LEGACY]))
8812 return -EINVAL;
8813 }
8814 if (tb[NL80211_TXRATE_HT]) {
8815 if (!ht_rateset_to_mask(
8816 sband,
8817 nla_data(tb[NL80211_TXRATE_HT]),
8818 nla_len(tb[NL80211_TXRATE_HT]),
8819 mask.control[band].ht_mcs))
8820 return -EINVAL;
8821 }
8822 if (tb[NL80211_TXRATE_VHT]) {
8823 if (!vht_set_mcs_mask(
8824 sband,
8825 nla_data(tb[NL80211_TXRATE_VHT]),
8826 mask.control[band].vht_mcs))
8827 return -EINVAL;
8828 }
8829 if (tb[NL80211_TXRATE_GI]) {
8830 mask.control[band].gi =
8831 nla_get_u8(tb[NL80211_TXRATE_GI]);
8832 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8833 return -EINVAL;
8834 }
8835
8836 if (mask.control[band].legacy == 0) {
8837 /* don't allow empty legacy rates if HT or VHT
8838 * are not even supported.
8839 */
8840 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8841 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8842 return -EINVAL;
8843
8844 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8845 if (mask.control[band].ht_mcs[i])
8846 goto out;
8847
8848 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8849 if (mask.control[band].vht_mcs[i])
8850 goto out;
8851
8852 /* legacy and mcs rates may not be both empty */
8853 return -EINVAL;
8854 }
8855 }
8856
8857 out:
8858 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8859 }
8860
8861 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8862 {
8863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8864 struct wireless_dev *wdev = info->user_ptr[1];
8865 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8866
8867 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8868 return -EINVAL;
8869
8870 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8871 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8872
8873 switch (wdev->iftype) {
8874 case NL80211_IFTYPE_STATION:
8875 case NL80211_IFTYPE_ADHOC:
8876 case NL80211_IFTYPE_P2P_CLIENT:
8877 case NL80211_IFTYPE_AP:
8878 case NL80211_IFTYPE_AP_VLAN:
8879 case NL80211_IFTYPE_MESH_POINT:
8880 case NL80211_IFTYPE_P2P_GO:
8881 case NL80211_IFTYPE_P2P_DEVICE:
8882 break;
8883 default:
8884 return -EOPNOTSUPP;
8885 }
8886
8887 /* not much point in registering if we can't reply */
8888 if (!rdev->ops->mgmt_tx)
8889 return -EOPNOTSUPP;
8890
8891 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8892 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8893 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8894 }
8895
8896 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8897 {
8898 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8899 struct wireless_dev *wdev = info->user_ptr[1];
8900 struct cfg80211_chan_def chandef;
8901 int err;
8902 void *hdr = NULL;
8903 u64 cookie;
8904 struct sk_buff *msg = NULL;
8905 struct cfg80211_mgmt_tx_params params = {
8906 .dont_wait_for_ack =
8907 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8908 };
8909
8910 if (!info->attrs[NL80211_ATTR_FRAME])
8911 return -EINVAL;
8912
8913 if (!rdev->ops->mgmt_tx)
8914 return -EOPNOTSUPP;
8915
8916 switch (wdev->iftype) {
8917 case NL80211_IFTYPE_P2P_DEVICE:
8918 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8919 return -EINVAL;
8920 case NL80211_IFTYPE_STATION:
8921 case NL80211_IFTYPE_ADHOC:
8922 case NL80211_IFTYPE_P2P_CLIENT:
8923 case NL80211_IFTYPE_AP:
8924 case NL80211_IFTYPE_AP_VLAN:
8925 case NL80211_IFTYPE_MESH_POINT:
8926 case NL80211_IFTYPE_P2P_GO:
8927 break;
8928 default:
8929 return -EOPNOTSUPP;
8930 }
8931
8932 if (info->attrs[NL80211_ATTR_DURATION]) {
8933 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8934 return -EINVAL;
8935 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8936
8937 /*
8938 * We should wait on the channel for at least a minimum amount
8939 * of time (10ms) but no longer than the driver supports.
8940 */
8941 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8942 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8943 return -EINVAL;
8944 }
8945
8946 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8947
8948 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8949 return -EINVAL;
8950
8951 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8952
8953 /* get the channel if any has been specified, otherwise pass NULL to
8954 * the driver. The latter will use the current one
8955 */
8956 chandef.chan = NULL;
8957 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8958 err = nl80211_parse_chandef(rdev, info, &chandef);
8959 if (err)
8960 return err;
8961 }
8962
8963 if (!chandef.chan && params.offchan)
8964 return -EINVAL;
8965
8966 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8967 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8968
8969 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8970 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8971 int i;
8972
8973 if (len % sizeof(u16))
8974 return -EINVAL;
8975
8976 params.n_csa_offsets = len / sizeof(u16);
8977 params.csa_offsets =
8978 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8979
8980 /* check that all the offsets fit the frame */
8981 for (i = 0; i < params.n_csa_offsets; i++) {
8982 if (params.csa_offsets[i] >= params.len)
8983 return -EINVAL;
8984 }
8985 }
8986
8987 if (!params.dont_wait_for_ack) {
8988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8989 if (!msg)
8990 return -ENOMEM;
8991
8992 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8993 NL80211_CMD_FRAME);
8994 if (!hdr) {
8995 err = -ENOBUFS;
8996 goto free_msg;
8997 }
8998 }
8999
9000 params.chan = chandef.chan;
9001 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9002 if (err)
9003 goto free_msg;
9004
9005 if (msg) {
9006 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9007 NL80211_ATTR_PAD))
9008 goto nla_put_failure;
9009
9010 genlmsg_end(msg, hdr);
9011 return genlmsg_reply(msg, info);
9012 }
9013
9014 return 0;
9015
9016 nla_put_failure:
9017 err = -ENOBUFS;
9018 free_msg:
9019 nlmsg_free(msg);
9020 return err;
9021 }
9022
9023 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9024 {
9025 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9026 struct wireless_dev *wdev = info->user_ptr[1];
9027 u64 cookie;
9028
9029 if (!info->attrs[NL80211_ATTR_COOKIE])
9030 return -EINVAL;
9031
9032 if (!rdev->ops->mgmt_tx_cancel_wait)
9033 return -EOPNOTSUPP;
9034
9035 switch (wdev->iftype) {
9036 case NL80211_IFTYPE_STATION:
9037 case NL80211_IFTYPE_ADHOC:
9038 case NL80211_IFTYPE_P2P_CLIENT:
9039 case NL80211_IFTYPE_AP:
9040 case NL80211_IFTYPE_AP_VLAN:
9041 case NL80211_IFTYPE_P2P_GO:
9042 case NL80211_IFTYPE_P2P_DEVICE:
9043 break;
9044 default:
9045 return -EOPNOTSUPP;
9046 }
9047
9048 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9049
9050 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9051 }
9052
9053 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9054 {
9055 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9056 struct wireless_dev *wdev;
9057 struct net_device *dev = info->user_ptr[1];
9058 u8 ps_state;
9059 bool state;
9060 int err;
9061
9062 if (!info->attrs[NL80211_ATTR_PS_STATE])
9063 return -EINVAL;
9064
9065 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9066
9067 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9068 return -EINVAL;
9069
9070 wdev = dev->ieee80211_ptr;
9071
9072 if (!rdev->ops->set_power_mgmt)
9073 return -EOPNOTSUPP;
9074
9075 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9076
9077 if (state == wdev->ps)
9078 return 0;
9079
9080 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9081 if (!err)
9082 wdev->ps = state;
9083 return err;
9084 }
9085
9086 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9087 {
9088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9089 enum nl80211_ps_state ps_state;
9090 struct wireless_dev *wdev;
9091 struct net_device *dev = info->user_ptr[1];
9092 struct sk_buff *msg;
9093 void *hdr;
9094 int err;
9095
9096 wdev = dev->ieee80211_ptr;
9097
9098 if (!rdev->ops->set_power_mgmt)
9099 return -EOPNOTSUPP;
9100
9101 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9102 if (!msg)
9103 return -ENOMEM;
9104
9105 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9106 NL80211_CMD_GET_POWER_SAVE);
9107 if (!hdr) {
9108 err = -ENOBUFS;
9109 goto free_msg;
9110 }
9111
9112 if (wdev->ps)
9113 ps_state = NL80211_PS_ENABLED;
9114 else
9115 ps_state = NL80211_PS_DISABLED;
9116
9117 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9118 goto nla_put_failure;
9119
9120 genlmsg_end(msg, hdr);
9121 return genlmsg_reply(msg, info);
9122
9123 nla_put_failure:
9124 err = -ENOBUFS;
9125 free_msg:
9126 nlmsg_free(msg);
9127 return err;
9128 }
9129
9130 static const struct nla_policy
9131 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9132 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9133 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9134 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9135 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9136 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9137 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9138 };
9139
9140 static int nl80211_set_cqm_txe(struct genl_info *info,
9141 u32 rate, u32 pkts, u32 intvl)
9142 {
9143 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9144 struct net_device *dev = info->user_ptr[1];
9145 struct wireless_dev *wdev = dev->ieee80211_ptr;
9146
9147 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9148 return -EINVAL;
9149
9150 if (!rdev->ops->set_cqm_txe_config)
9151 return -EOPNOTSUPP;
9152
9153 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9154 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9155 return -EOPNOTSUPP;
9156
9157 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9158 }
9159
9160 static int nl80211_set_cqm_rssi(struct genl_info *info,
9161 s32 threshold, u32 hysteresis)
9162 {
9163 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9164 struct net_device *dev = info->user_ptr[1];
9165 struct wireless_dev *wdev = dev->ieee80211_ptr;
9166
9167 if (threshold > 0)
9168 return -EINVAL;
9169
9170 /* disabling - hysteresis should also be zero then */
9171 if (threshold == 0)
9172 hysteresis = 0;
9173
9174 if (!rdev->ops->set_cqm_rssi_config)
9175 return -EOPNOTSUPP;
9176
9177 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9178 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9179 return -EOPNOTSUPP;
9180
9181 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9182 }
9183
9184 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9185 {
9186 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9187 struct nlattr *cqm;
9188 int err;
9189
9190 cqm = info->attrs[NL80211_ATTR_CQM];
9191 if (!cqm)
9192 return -EINVAL;
9193
9194 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9195 nl80211_attr_cqm_policy);
9196 if (err)
9197 return err;
9198
9199 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9200 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9201 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9202 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9203
9204 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9205 }
9206
9207 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9208 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9209 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9210 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9211 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9212 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9213
9214 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9215 }
9216
9217 return -EINVAL;
9218 }
9219
9220 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9221 {
9222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9223 struct net_device *dev = info->user_ptr[1];
9224 struct ocb_setup setup = {};
9225 int err;
9226
9227 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9228 if (err)
9229 return err;
9230
9231 return cfg80211_join_ocb(rdev, dev, &setup);
9232 }
9233
9234 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9235 {
9236 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9237 struct net_device *dev = info->user_ptr[1];
9238
9239 return cfg80211_leave_ocb(rdev, dev);
9240 }
9241
9242 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9243 {
9244 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9245 struct net_device *dev = info->user_ptr[1];
9246 struct mesh_config cfg;
9247 struct mesh_setup setup;
9248 int err;
9249
9250 /* start with default */
9251 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9252 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9253
9254 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9255 /* and parse parameters if given */
9256 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9257 if (err)
9258 return err;
9259 }
9260
9261 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9262 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9263 return -EINVAL;
9264
9265 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9266 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9267
9268 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9269 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9270 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9271 return -EINVAL;
9272
9273 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9274 setup.beacon_interval =
9275 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9276
9277 err = cfg80211_validate_beacon_int(rdev, setup.beacon_interval);
9278 if (err)
9279 return err;
9280 }
9281
9282 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9283 setup.dtim_period =
9284 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9285 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9286 return -EINVAL;
9287 }
9288
9289 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9290 /* parse additional setup parameters if given */
9291 err = nl80211_parse_mesh_setup(info, &setup);
9292 if (err)
9293 return err;
9294 }
9295
9296 if (setup.user_mpm)
9297 cfg.auto_open_plinks = false;
9298
9299 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9300 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9301 if (err)
9302 return err;
9303 } else {
9304 /* cfg80211_join_mesh() will sort it out */
9305 setup.chandef.chan = NULL;
9306 }
9307
9308 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9309 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9310 int n_rates =
9311 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9312 struct ieee80211_supported_band *sband;
9313
9314 if (!setup.chandef.chan)
9315 return -EINVAL;
9316
9317 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9318
9319 err = ieee80211_get_ratemask(sband, rates, n_rates,
9320 &setup.basic_rates);
9321 if (err)
9322 return err;
9323 }
9324
9325 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9326 }
9327
9328 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9329 {
9330 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9331 struct net_device *dev = info->user_ptr[1];
9332
9333 return cfg80211_leave_mesh(rdev, dev);
9334 }
9335
9336 #ifdef CONFIG_PM
9337 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9338 struct cfg80211_registered_device *rdev)
9339 {
9340 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9341 struct nlattr *nl_pats, *nl_pat;
9342 int i, pat_len;
9343
9344 if (!wowlan->n_patterns)
9345 return 0;
9346
9347 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9348 if (!nl_pats)
9349 return -ENOBUFS;
9350
9351 for (i = 0; i < wowlan->n_patterns; i++) {
9352 nl_pat = nla_nest_start(msg, i + 1);
9353 if (!nl_pat)
9354 return -ENOBUFS;
9355 pat_len = wowlan->patterns[i].pattern_len;
9356 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9357 wowlan->patterns[i].mask) ||
9358 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9359 wowlan->patterns[i].pattern) ||
9360 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9361 wowlan->patterns[i].pkt_offset))
9362 return -ENOBUFS;
9363 nla_nest_end(msg, nl_pat);
9364 }
9365 nla_nest_end(msg, nl_pats);
9366
9367 return 0;
9368 }
9369
9370 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9371 struct cfg80211_wowlan_tcp *tcp)
9372 {
9373 struct nlattr *nl_tcp;
9374
9375 if (!tcp)
9376 return 0;
9377
9378 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9379 if (!nl_tcp)
9380 return -ENOBUFS;
9381
9382 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9383 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9384 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9385 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9386 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9387 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9388 tcp->payload_len, tcp->payload) ||
9389 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9390 tcp->data_interval) ||
9391 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9392 tcp->wake_len, tcp->wake_data) ||
9393 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9394 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9395 return -ENOBUFS;
9396
9397 if (tcp->payload_seq.len &&
9398 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9399 sizeof(tcp->payload_seq), &tcp->payload_seq))
9400 return -ENOBUFS;
9401
9402 if (tcp->payload_tok.len &&
9403 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9404 sizeof(tcp->payload_tok) + tcp->tokens_size,
9405 &tcp->payload_tok))
9406 return -ENOBUFS;
9407
9408 nla_nest_end(msg, nl_tcp);
9409
9410 return 0;
9411 }
9412
9413 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9414 struct cfg80211_sched_scan_request *req)
9415 {
9416 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9417 int i;
9418
9419 if (!req)
9420 return 0;
9421
9422 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9423 if (!nd)
9424 return -ENOBUFS;
9425
9426 if (req->n_scan_plans == 1 &&
9427 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9428 req->scan_plans[0].interval * 1000))
9429 return -ENOBUFS;
9430
9431 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9432 return -ENOBUFS;
9433
9434 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9435 if (!freqs)
9436 return -ENOBUFS;
9437
9438 for (i = 0; i < req->n_channels; i++)
9439 nla_put_u32(msg, i, req->channels[i]->center_freq);
9440
9441 nla_nest_end(msg, freqs);
9442
9443 if (req->n_match_sets) {
9444 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9445 for (i = 0; i < req->n_match_sets; i++) {
9446 match = nla_nest_start(msg, i);
9447 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9448 req->match_sets[i].ssid.ssid_len,
9449 req->match_sets[i].ssid.ssid);
9450 nla_nest_end(msg, match);
9451 }
9452 nla_nest_end(msg, matches);
9453 }
9454
9455 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9456 if (!scan_plans)
9457 return -ENOBUFS;
9458
9459 for (i = 0; i < req->n_scan_plans; i++) {
9460 scan_plan = nla_nest_start(msg, i + 1);
9461 if (!scan_plan ||
9462 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9463 req->scan_plans[i].interval) ||
9464 (req->scan_plans[i].iterations &&
9465 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9466 req->scan_plans[i].iterations)))
9467 return -ENOBUFS;
9468 nla_nest_end(msg, scan_plan);
9469 }
9470 nla_nest_end(msg, scan_plans);
9471
9472 nla_nest_end(msg, nd);
9473
9474 return 0;
9475 }
9476
9477 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9478 {
9479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9480 struct sk_buff *msg;
9481 void *hdr;
9482 u32 size = NLMSG_DEFAULT_SIZE;
9483
9484 if (!rdev->wiphy.wowlan)
9485 return -EOPNOTSUPP;
9486
9487 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9488 /* adjust size to have room for all the data */
9489 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9490 rdev->wiphy.wowlan_config->tcp->payload_len +
9491 rdev->wiphy.wowlan_config->tcp->wake_len +
9492 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9493 }
9494
9495 msg = nlmsg_new(size, GFP_KERNEL);
9496 if (!msg)
9497 return -ENOMEM;
9498
9499 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9500 NL80211_CMD_GET_WOWLAN);
9501 if (!hdr)
9502 goto nla_put_failure;
9503
9504 if (rdev->wiphy.wowlan_config) {
9505 struct nlattr *nl_wowlan;
9506
9507 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9508 if (!nl_wowlan)
9509 goto nla_put_failure;
9510
9511 if ((rdev->wiphy.wowlan_config->any &&
9512 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9513 (rdev->wiphy.wowlan_config->disconnect &&
9514 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9515 (rdev->wiphy.wowlan_config->magic_pkt &&
9516 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9517 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9518 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9519 (rdev->wiphy.wowlan_config->eap_identity_req &&
9520 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9521 (rdev->wiphy.wowlan_config->four_way_handshake &&
9522 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9523 (rdev->wiphy.wowlan_config->rfkill_release &&
9524 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9525 goto nla_put_failure;
9526
9527 if (nl80211_send_wowlan_patterns(msg, rdev))
9528 goto nla_put_failure;
9529
9530 if (nl80211_send_wowlan_tcp(msg,
9531 rdev->wiphy.wowlan_config->tcp))
9532 goto nla_put_failure;
9533
9534 if (nl80211_send_wowlan_nd(
9535 msg,
9536 rdev->wiphy.wowlan_config->nd_config))
9537 goto nla_put_failure;
9538
9539 nla_nest_end(msg, nl_wowlan);
9540 }
9541
9542 genlmsg_end(msg, hdr);
9543 return genlmsg_reply(msg, info);
9544
9545 nla_put_failure:
9546 nlmsg_free(msg);
9547 return -ENOBUFS;
9548 }
9549
9550 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9551 struct nlattr *attr,
9552 struct cfg80211_wowlan *trig)
9553 {
9554 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9555 struct cfg80211_wowlan_tcp *cfg;
9556 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9557 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9558 u32 size;
9559 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9560 int err, port;
9561
9562 if (!rdev->wiphy.wowlan->tcp)
9563 return -EINVAL;
9564
9565 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9566 nla_data(attr), nla_len(attr),
9567 nl80211_wowlan_tcp_policy);
9568 if (err)
9569 return err;
9570
9571 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9572 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9573 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9574 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9575 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9576 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9577 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9578 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9579 return -EINVAL;
9580
9581 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9582 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9583 return -EINVAL;
9584
9585 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9586 rdev->wiphy.wowlan->tcp->data_interval_max ||
9587 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9588 return -EINVAL;
9589
9590 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9591 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9592 return -EINVAL;
9593
9594 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9595 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9596 return -EINVAL;
9597
9598 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9599 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9600
9601 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9602 tokens_size = tokln - sizeof(*tok);
9603
9604 if (!tok->len || tokens_size % tok->len)
9605 return -EINVAL;
9606 if (!rdev->wiphy.wowlan->tcp->tok)
9607 return -EINVAL;
9608 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9609 return -EINVAL;
9610 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9611 return -EINVAL;
9612 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9613 return -EINVAL;
9614 if (tok->offset + tok->len > data_size)
9615 return -EINVAL;
9616 }
9617
9618 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9619 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9620 if (!rdev->wiphy.wowlan->tcp->seq)
9621 return -EINVAL;
9622 if (seq->len == 0 || seq->len > 4)
9623 return -EINVAL;
9624 if (seq->len + seq->offset > data_size)
9625 return -EINVAL;
9626 }
9627
9628 size = sizeof(*cfg);
9629 size += data_size;
9630 size += wake_size + wake_mask_size;
9631 size += tokens_size;
9632
9633 cfg = kzalloc(size, GFP_KERNEL);
9634 if (!cfg)
9635 return -ENOMEM;
9636 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9637 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9638 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9639 ETH_ALEN);
9640 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9641 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9642 else
9643 port = 0;
9644 #ifdef CONFIG_INET
9645 /* allocate a socket and port for it and use it */
9646 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9647 IPPROTO_TCP, &cfg->sock, 1);
9648 if (err) {
9649 kfree(cfg);
9650 return err;
9651 }
9652 if (inet_csk_get_port(cfg->sock->sk, port)) {
9653 sock_release(cfg->sock);
9654 kfree(cfg);
9655 return -EADDRINUSE;
9656 }
9657 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9658 #else
9659 if (!port) {
9660 kfree(cfg);
9661 return -EINVAL;
9662 }
9663 cfg->src_port = port;
9664 #endif
9665
9666 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9667 cfg->payload_len = data_size;
9668 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9669 memcpy((void *)cfg->payload,
9670 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9671 data_size);
9672 if (seq)
9673 cfg->payload_seq = *seq;
9674 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9675 cfg->wake_len = wake_size;
9676 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9677 memcpy((void *)cfg->wake_data,
9678 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9679 wake_size);
9680 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9681 data_size + wake_size;
9682 memcpy((void *)cfg->wake_mask,
9683 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9684 wake_mask_size);
9685 if (tok) {
9686 cfg->tokens_size = tokens_size;
9687 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9688 }
9689
9690 trig->tcp = cfg;
9691
9692 return 0;
9693 }
9694
9695 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9696 const struct wiphy_wowlan_support *wowlan,
9697 struct nlattr *attr,
9698 struct cfg80211_wowlan *trig)
9699 {
9700 struct nlattr **tb;
9701 int err;
9702
9703 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9704 if (!tb)
9705 return -ENOMEM;
9706
9707 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9708 err = -EOPNOTSUPP;
9709 goto out;
9710 }
9711
9712 err = nla_parse(tb, NL80211_ATTR_MAX,
9713 nla_data(attr), nla_len(attr),
9714 nl80211_policy);
9715 if (err)
9716 goto out;
9717
9718 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9719 err = PTR_ERR_OR_ZERO(trig->nd_config);
9720 if (err)
9721 trig->nd_config = NULL;
9722
9723 out:
9724 kfree(tb);
9725 return err;
9726 }
9727
9728 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9729 {
9730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9731 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9732 struct cfg80211_wowlan new_triggers = {};
9733 struct cfg80211_wowlan *ntrig;
9734 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9735 int err, i;
9736 bool prev_enabled = rdev->wiphy.wowlan_config;
9737 bool regular = false;
9738
9739 if (!wowlan)
9740 return -EOPNOTSUPP;
9741
9742 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9743 cfg80211_rdev_free_wowlan(rdev);
9744 rdev->wiphy.wowlan_config = NULL;
9745 goto set_wakeup;
9746 }
9747
9748 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9749 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9750 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9751 nl80211_wowlan_policy);
9752 if (err)
9753 return err;
9754
9755 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9756 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9757 return -EINVAL;
9758 new_triggers.any = true;
9759 }
9760
9761 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9762 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9763 return -EINVAL;
9764 new_triggers.disconnect = true;
9765 regular = true;
9766 }
9767
9768 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9769 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9770 return -EINVAL;
9771 new_triggers.magic_pkt = true;
9772 regular = true;
9773 }
9774
9775 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9776 return -EINVAL;
9777
9778 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9779 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9780 return -EINVAL;
9781 new_triggers.gtk_rekey_failure = true;
9782 regular = true;
9783 }
9784
9785 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9786 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9787 return -EINVAL;
9788 new_triggers.eap_identity_req = true;
9789 regular = true;
9790 }
9791
9792 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9793 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9794 return -EINVAL;
9795 new_triggers.four_way_handshake = true;
9796 regular = true;
9797 }
9798
9799 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9800 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9801 return -EINVAL;
9802 new_triggers.rfkill_release = true;
9803 regular = true;
9804 }
9805
9806 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9807 struct nlattr *pat;
9808 int n_patterns = 0;
9809 int rem, pat_len, mask_len, pkt_offset;
9810 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9811
9812 regular = true;
9813
9814 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9815 rem)
9816 n_patterns++;
9817 if (n_patterns > wowlan->n_patterns)
9818 return -EINVAL;
9819
9820 new_triggers.patterns = kcalloc(n_patterns,
9821 sizeof(new_triggers.patterns[0]),
9822 GFP_KERNEL);
9823 if (!new_triggers.patterns)
9824 return -ENOMEM;
9825
9826 new_triggers.n_patterns = n_patterns;
9827 i = 0;
9828
9829 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9830 rem) {
9831 u8 *mask_pat;
9832
9833 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9834 nla_len(pat), NULL);
9835 err = -EINVAL;
9836 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9837 !pat_tb[NL80211_PKTPAT_PATTERN])
9838 goto error;
9839 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9840 mask_len = DIV_ROUND_UP(pat_len, 8);
9841 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9842 goto error;
9843 if (pat_len > wowlan->pattern_max_len ||
9844 pat_len < wowlan->pattern_min_len)
9845 goto error;
9846
9847 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9848 pkt_offset = 0;
9849 else
9850 pkt_offset = nla_get_u32(
9851 pat_tb[NL80211_PKTPAT_OFFSET]);
9852 if (pkt_offset > wowlan->max_pkt_offset)
9853 goto error;
9854 new_triggers.patterns[i].pkt_offset = pkt_offset;
9855
9856 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9857 if (!mask_pat) {
9858 err = -ENOMEM;
9859 goto error;
9860 }
9861 new_triggers.patterns[i].mask = mask_pat;
9862 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9863 mask_len);
9864 mask_pat += mask_len;
9865 new_triggers.patterns[i].pattern = mask_pat;
9866 new_triggers.patterns[i].pattern_len = pat_len;
9867 memcpy(mask_pat,
9868 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9869 pat_len);
9870 i++;
9871 }
9872 }
9873
9874 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9875 regular = true;
9876 err = nl80211_parse_wowlan_tcp(
9877 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9878 &new_triggers);
9879 if (err)
9880 goto error;
9881 }
9882
9883 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9884 regular = true;
9885 err = nl80211_parse_wowlan_nd(
9886 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9887 &new_triggers);
9888 if (err)
9889 goto error;
9890 }
9891
9892 /* The 'any' trigger means the device continues operating more or less
9893 * as in its normal operation mode and wakes up the host on most of the
9894 * normal interrupts (like packet RX, ...)
9895 * It therefore makes little sense to combine with the more constrained
9896 * wakeup trigger modes.
9897 */
9898 if (new_triggers.any && regular) {
9899 err = -EINVAL;
9900 goto error;
9901 }
9902
9903 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9904 if (!ntrig) {
9905 err = -ENOMEM;
9906 goto error;
9907 }
9908 cfg80211_rdev_free_wowlan(rdev);
9909 rdev->wiphy.wowlan_config = ntrig;
9910
9911 set_wakeup:
9912 if (rdev->ops->set_wakeup &&
9913 prev_enabled != !!rdev->wiphy.wowlan_config)
9914 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9915
9916 return 0;
9917 error:
9918 for (i = 0; i < new_triggers.n_patterns; i++)
9919 kfree(new_triggers.patterns[i].mask);
9920 kfree(new_triggers.patterns);
9921 if (new_triggers.tcp && new_triggers.tcp->sock)
9922 sock_release(new_triggers.tcp->sock);
9923 kfree(new_triggers.tcp);
9924 kfree(new_triggers.nd_config);
9925 return err;
9926 }
9927 #endif
9928
9929 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9930 struct cfg80211_registered_device *rdev)
9931 {
9932 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9933 int i, j, pat_len;
9934 struct cfg80211_coalesce_rules *rule;
9935
9936 if (!rdev->coalesce->n_rules)
9937 return 0;
9938
9939 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9940 if (!nl_rules)
9941 return -ENOBUFS;
9942
9943 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9944 nl_rule = nla_nest_start(msg, i + 1);
9945 if (!nl_rule)
9946 return -ENOBUFS;
9947
9948 rule = &rdev->coalesce->rules[i];
9949 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9950 rule->delay))
9951 return -ENOBUFS;
9952
9953 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9954 rule->condition))
9955 return -ENOBUFS;
9956
9957 nl_pats = nla_nest_start(msg,
9958 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9959 if (!nl_pats)
9960 return -ENOBUFS;
9961
9962 for (j = 0; j < rule->n_patterns; j++) {
9963 nl_pat = nla_nest_start(msg, j + 1);
9964 if (!nl_pat)
9965 return -ENOBUFS;
9966 pat_len = rule->patterns[j].pattern_len;
9967 if (nla_put(msg, NL80211_PKTPAT_MASK,
9968 DIV_ROUND_UP(pat_len, 8),
9969 rule->patterns[j].mask) ||
9970 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9971 rule->patterns[j].pattern) ||
9972 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9973 rule->patterns[j].pkt_offset))
9974 return -ENOBUFS;
9975 nla_nest_end(msg, nl_pat);
9976 }
9977 nla_nest_end(msg, nl_pats);
9978 nla_nest_end(msg, nl_rule);
9979 }
9980 nla_nest_end(msg, nl_rules);
9981
9982 return 0;
9983 }
9984
9985 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9986 {
9987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9988 struct sk_buff *msg;
9989 void *hdr;
9990
9991 if (!rdev->wiphy.coalesce)
9992 return -EOPNOTSUPP;
9993
9994 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9995 if (!msg)
9996 return -ENOMEM;
9997
9998 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9999 NL80211_CMD_GET_COALESCE);
10000 if (!hdr)
10001 goto nla_put_failure;
10002
10003 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10004 goto nla_put_failure;
10005
10006 genlmsg_end(msg, hdr);
10007 return genlmsg_reply(msg, info);
10008
10009 nla_put_failure:
10010 nlmsg_free(msg);
10011 return -ENOBUFS;
10012 }
10013
10014 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10015 {
10016 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10017 int i, j;
10018 struct cfg80211_coalesce_rules *rule;
10019
10020 if (!coalesce)
10021 return;
10022
10023 for (i = 0; i < coalesce->n_rules; i++) {
10024 rule = &coalesce->rules[i];
10025 for (j = 0; j < rule->n_patterns; j++)
10026 kfree(rule->patterns[j].mask);
10027 kfree(rule->patterns);
10028 }
10029 kfree(coalesce->rules);
10030 kfree(coalesce);
10031 rdev->coalesce = NULL;
10032 }
10033
10034 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10035 struct nlattr *rule,
10036 struct cfg80211_coalesce_rules *new_rule)
10037 {
10038 int err, i;
10039 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10040 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10041 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10042 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10043
10044 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
10045 nla_len(rule), nl80211_coalesce_policy);
10046 if (err)
10047 return err;
10048
10049 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10050 new_rule->delay =
10051 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10052 if (new_rule->delay > coalesce->max_delay)
10053 return -EINVAL;
10054
10055 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10056 new_rule->condition =
10057 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10058 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10059 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10060 return -EINVAL;
10061
10062 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10063 return -EINVAL;
10064
10065 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10066 rem)
10067 n_patterns++;
10068 if (n_patterns > coalesce->n_patterns)
10069 return -EINVAL;
10070
10071 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10072 GFP_KERNEL);
10073 if (!new_rule->patterns)
10074 return -ENOMEM;
10075
10076 new_rule->n_patterns = n_patterns;
10077 i = 0;
10078
10079 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10080 rem) {
10081 u8 *mask_pat;
10082
10083 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
10084 nla_len(pat), NULL);
10085 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10086 !pat_tb[NL80211_PKTPAT_PATTERN])
10087 return -EINVAL;
10088 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10089 mask_len = DIV_ROUND_UP(pat_len, 8);
10090 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10091 return -EINVAL;
10092 if (pat_len > coalesce->pattern_max_len ||
10093 pat_len < coalesce->pattern_min_len)
10094 return -EINVAL;
10095
10096 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10097 pkt_offset = 0;
10098 else
10099 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10100 if (pkt_offset > coalesce->max_pkt_offset)
10101 return -EINVAL;
10102 new_rule->patterns[i].pkt_offset = pkt_offset;
10103
10104 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10105 if (!mask_pat)
10106 return -ENOMEM;
10107
10108 new_rule->patterns[i].mask = mask_pat;
10109 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10110 mask_len);
10111
10112 mask_pat += mask_len;
10113 new_rule->patterns[i].pattern = mask_pat;
10114 new_rule->patterns[i].pattern_len = pat_len;
10115 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10116 pat_len);
10117 i++;
10118 }
10119
10120 return 0;
10121 }
10122
10123 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10124 {
10125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10126 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10127 struct cfg80211_coalesce new_coalesce = {};
10128 struct cfg80211_coalesce *n_coalesce;
10129 int err, rem_rule, n_rules = 0, i, j;
10130 struct nlattr *rule;
10131 struct cfg80211_coalesce_rules *tmp_rule;
10132
10133 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10134 return -EOPNOTSUPP;
10135
10136 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10137 cfg80211_rdev_free_coalesce(rdev);
10138 rdev_set_coalesce(rdev, NULL);
10139 return 0;
10140 }
10141
10142 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10143 rem_rule)
10144 n_rules++;
10145 if (n_rules > coalesce->n_rules)
10146 return -EINVAL;
10147
10148 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10149 GFP_KERNEL);
10150 if (!new_coalesce.rules)
10151 return -ENOMEM;
10152
10153 new_coalesce.n_rules = n_rules;
10154 i = 0;
10155
10156 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10157 rem_rule) {
10158 err = nl80211_parse_coalesce_rule(rdev, rule,
10159 &new_coalesce.rules[i]);
10160 if (err)
10161 goto error;
10162
10163 i++;
10164 }
10165
10166 err = rdev_set_coalesce(rdev, &new_coalesce);
10167 if (err)
10168 goto error;
10169
10170 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10171 if (!n_coalesce) {
10172 err = -ENOMEM;
10173 goto error;
10174 }
10175 cfg80211_rdev_free_coalesce(rdev);
10176 rdev->coalesce = n_coalesce;
10177
10178 return 0;
10179 error:
10180 for (i = 0; i < new_coalesce.n_rules; i++) {
10181 tmp_rule = &new_coalesce.rules[i];
10182 for (j = 0; j < tmp_rule->n_patterns; j++)
10183 kfree(tmp_rule->patterns[j].mask);
10184 kfree(tmp_rule->patterns);
10185 }
10186 kfree(new_coalesce.rules);
10187
10188 return err;
10189 }
10190
10191 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10192 {
10193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10194 struct net_device *dev = info->user_ptr[1];
10195 struct wireless_dev *wdev = dev->ieee80211_ptr;
10196 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10197 struct cfg80211_gtk_rekey_data rekey_data;
10198 int err;
10199
10200 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10201 return -EINVAL;
10202
10203 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
10204 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
10205 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
10206 nl80211_rekey_policy);
10207 if (err)
10208 return err;
10209
10210 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10211 return -ERANGE;
10212 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10213 return -ERANGE;
10214 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10215 return -ERANGE;
10216
10217 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10218 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10219 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10220
10221 wdev_lock(wdev);
10222 if (!wdev->current_bss) {
10223 err = -ENOTCONN;
10224 goto out;
10225 }
10226
10227 if (!rdev->ops->set_rekey_data) {
10228 err = -EOPNOTSUPP;
10229 goto out;
10230 }
10231
10232 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10233 out:
10234 wdev_unlock(wdev);
10235 return err;
10236 }
10237
10238 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10239 struct genl_info *info)
10240 {
10241 struct net_device *dev = info->user_ptr[1];
10242 struct wireless_dev *wdev = dev->ieee80211_ptr;
10243
10244 if (wdev->iftype != NL80211_IFTYPE_AP &&
10245 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10246 return -EINVAL;
10247
10248 if (wdev->ap_unexpected_nlportid)
10249 return -EBUSY;
10250
10251 wdev->ap_unexpected_nlportid = info->snd_portid;
10252 return 0;
10253 }
10254
10255 static int nl80211_probe_client(struct sk_buff *skb,
10256 struct genl_info *info)
10257 {
10258 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10259 struct net_device *dev = info->user_ptr[1];
10260 struct wireless_dev *wdev = dev->ieee80211_ptr;
10261 struct sk_buff *msg;
10262 void *hdr;
10263 const u8 *addr;
10264 u64 cookie;
10265 int err;
10266
10267 if (wdev->iftype != NL80211_IFTYPE_AP &&
10268 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10269 return -EOPNOTSUPP;
10270
10271 if (!info->attrs[NL80211_ATTR_MAC])
10272 return -EINVAL;
10273
10274 if (!rdev->ops->probe_client)
10275 return -EOPNOTSUPP;
10276
10277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10278 if (!msg)
10279 return -ENOMEM;
10280
10281 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10282 NL80211_CMD_PROBE_CLIENT);
10283 if (!hdr) {
10284 err = -ENOBUFS;
10285 goto free_msg;
10286 }
10287
10288 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10289
10290 err = rdev_probe_client(rdev, dev, addr, &cookie);
10291 if (err)
10292 goto free_msg;
10293
10294 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10295 NL80211_ATTR_PAD))
10296 goto nla_put_failure;
10297
10298 genlmsg_end(msg, hdr);
10299
10300 return genlmsg_reply(msg, info);
10301
10302 nla_put_failure:
10303 err = -ENOBUFS;
10304 free_msg:
10305 nlmsg_free(msg);
10306 return err;
10307 }
10308
10309 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10310 {
10311 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10312 struct cfg80211_beacon_registration *reg, *nreg;
10313 int rv;
10314
10315 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10316 return -EOPNOTSUPP;
10317
10318 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10319 if (!nreg)
10320 return -ENOMEM;
10321
10322 /* First, check if already registered. */
10323 spin_lock_bh(&rdev->beacon_registrations_lock);
10324 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10325 if (reg->nlportid == info->snd_portid) {
10326 rv = -EALREADY;
10327 goto out_err;
10328 }
10329 }
10330 /* Add it to the list */
10331 nreg->nlportid = info->snd_portid;
10332 list_add(&nreg->list, &rdev->beacon_registrations);
10333
10334 spin_unlock_bh(&rdev->beacon_registrations_lock);
10335
10336 return 0;
10337 out_err:
10338 spin_unlock_bh(&rdev->beacon_registrations_lock);
10339 kfree(nreg);
10340 return rv;
10341 }
10342
10343 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10344 {
10345 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10346 struct wireless_dev *wdev = info->user_ptr[1];
10347 int err;
10348
10349 if (!rdev->ops->start_p2p_device)
10350 return -EOPNOTSUPP;
10351
10352 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10353 return -EOPNOTSUPP;
10354
10355 if (wdev->p2p_started)
10356 return 0;
10357
10358 if (rfkill_blocked(rdev->rfkill))
10359 return -ERFKILL;
10360
10361 err = rdev_start_p2p_device(rdev, wdev);
10362 if (err)
10363 return err;
10364
10365 wdev->p2p_started = true;
10366 rdev->opencount++;
10367
10368 return 0;
10369 }
10370
10371 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10372 {
10373 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10374 struct wireless_dev *wdev = info->user_ptr[1];
10375
10376 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10377 return -EOPNOTSUPP;
10378
10379 if (!rdev->ops->stop_p2p_device)
10380 return -EOPNOTSUPP;
10381
10382 cfg80211_stop_p2p_device(rdev, wdev);
10383
10384 return 0;
10385 }
10386
10387 static int nl80211_get_protocol_features(struct sk_buff *skb,
10388 struct genl_info *info)
10389 {
10390 void *hdr;
10391 struct sk_buff *msg;
10392
10393 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10394 if (!msg)
10395 return -ENOMEM;
10396
10397 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10398 NL80211_CMD_GET_PROTOCOL_FEATURES);
10399 if (!hdr)
10400 goto nla_put_failure;
10401
10402 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
10403 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
10404 goto nla_put_failure;
10405
10406 genlmsg_end(msg, hdr);
10407 return genlmsg_reply(msg, info);
10408
10409 nla_put_failure:
10410 kfree_skb(msg);
10411 return -ENOBUFS;
10412 }
10413
10414 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10415 {
10416 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10417 struct cfg80211_update_ft_ies_params ft_params;
10418 struct net_device *dev = info->user_ptr[1];
10419
10420 if (!rdev->ops->update_ft_ies)
10421 return -EOPNOTSUPP;
10422
10423 if (!info->attrs[NL80211_ATTR_MDID] ||
10424 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10425 return -EINVAL;
10426
10427 memset(&ft_params, 0, sizeof(ft_params));
10428 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10429 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10430 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10431
10432 return rdev_update_ft_ies(rdev, dev, &ft_params);
10433 }
10434
10435 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10436 struct genl_info *info)
10437 {
10438 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10439 struct wireless_dev *wdev = info->user_ptr[1];
10440 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10441 u16 duration;
10442 int ret;
10443
10444 if (!rdev->ops->crit_proto_start)
10445 return -EOPNOTSUPP;
10446
10447 if (WARN_ON(!rdev->ops->crit_proto_stop))
10448 return -EINVAL;
10449
10450 if (rdev->crit_proto_nlportid)
10451 return -EBUSY;
10452
10453 /* determine protocol if provided */
10454 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10455 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10456
10457 if (proto >= NUM_NL80211_CRIT_PROTO)
10458 return -EINVAL;
10459
10460 /* timeout must be provided */
10461 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10462 return -EINVAL;
10463
10464 duration =
10465 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10466
10467 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10468 return -ERANGE;
10469
10470 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10471 if (!ret)
10472 rdev->crit_proto_nlportid = info->snd_portid;
10473
10474 return ret;
10475 }
10476
10477 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10478 struct genl_info *info)
10479 {
10480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10481 struct wireless_dev *wdev = info->user_ptr[1];
10482
10483 if (!rdev->ops->crit_proto_stop)
10484 return -EOPNOTSUPP;
10485
10486 if (rdev->crit_proto_nlportid) {
10487 rdev->crit_proto_nlportid = 0;
10488 rdev_crit_proto_stop(rdev, wdev);
10489 }
10490 return 0;
10491 }
10492
10493 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10494 {
10495 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10496 struct wireless_dev *wdev =
10497 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10498 int i, err;
10499 u32 vid, subcmd;
10500
10501 if (!rdev->wiphy.vendor_commands)
10502 return -EOPNOTSUPP;
10503
10504 if (IS_ERR(wdev)) {
10505 err = PTR_ERR(wdev);
10506 if (err != -EINVAL)
10507 return err;
10508 wdev = NULL;
10509 } else if (wdev->wiphy != &rdev->wiphy) {
10510 return -EINVAL;
10511 }
10512
10513 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10514 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10515 return -EINVAL;
10516
10517 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10518 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10519 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10520 const struct wiphy_vendor_command *vcmd;
10521 void *data = NULL;
10522 int len = 0;
10523
10524 vcmd = &rdev->wiphy.vendor_commands[i];
10525
10526 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10527 continue;
10528
10529 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10530 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10531 if (!wdev)
10532 return -EINVAL;
10533 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10534 !wdev->netdev)
10535 return -EINVAL;
10536
10537 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10538 if (wdev->netdev &&
10539 !netif_running(wdev->netdev))
10540 return -ENETDOWN;
10541 if (!wdev->netdev && !wdev->p2p_started)
10542 return -ENETDOWN;
10543 }
10544
10545 if (!vcmd->doit)
10546 return -EOPNOTSUPP;
10547 } else {
10548 wdev = NULL;
10549 }
10550
10551 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10552 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10553 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10554 }
10555
10556 rdev->cur_cmd_info = info;
10557 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10558 data, len);
10559 rdev->cur_cmd_info = NULL;
10560 return err;
10561 }
10562
10563 return -EOPNOTSUPP;
10564 }
10565
10566 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10567 struct netlink_callback *cb,
10568 struct cfg80211_registered_device **rdev,
10569 struct wireless_dev **wdev)
10570 {
10571 u32 vid, subcmd;
10572 unsigned int i;
10573 int vcmd_idx = -1;
10574 int err;
10575 void *data = NULL;
10576 unsigned int data_len = 0;
10577
10578 rtnl_lock();
10579
10580 if (cb->args[0]) {
10581 /* subtract the 1 again here */
10582 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10583 struct wireless_dev *tmp;
10584
10585 if (!wiphy) {
10586 err = -ENODEV;
10587 goto out_unlock;
10588 }
10589 *rdev = wiphy_to_rdev(wiphy);
10590 *wdev = NULL;
10591
10592 if (cb->args[1]) {
10593 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
10594 if (tmp->identifier == cb->args[1] - 1) {
10595 *wdev = tmp;
10596 break;
10597 }
10598 }
10599 }
10600
10601 /* keep rtnl locked in successful case */
10602 return 0;
10603 }
10604
10605 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10606 nl80211_fam.attrbuf, nl80211_fam.maxattr,
10607 nl80211_policy);
10608 if (err)
10609 goto out_unlock;
10610
10611 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10612 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
10613 err = -EINVAL;
10614 goto out_unlock;
10615 }
10616
10617 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10618 nl80211_fam.attrbuf);
10619 if (IS_ERR(*wdev))
10620 *wdev = NULL;
10621
10622 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10623 nl80211_fam.attrbuf);
10624 if (IS_ERR(*rdev)) {
10625 err = PTR_ERR(*rdev);
10626 goto out_unlock;
10627 }
10628
10629 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10630 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10631
10632 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10633 const struct wiphy_vendor_command *vcmd;
10634
10635 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10636
10637 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10638 continue;
10639
10640 if (!vcmd->dumpit) {
10641 err = -EOPNOTSUPP;
10642 goto out_unlock;
10643 }
10644
10645 vcmd_idx = i;
10646 break;
10647 }
10648
10649 if (vcmd_idx < 0) {
10650 err = -EOPNOTSUPP;
10651 goto out_unlock;
10652 }
10653
10654 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10655 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10656 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10657 }
10658
10659 /* 0 is the first index - add 1 to parse only once */
10660 cb->args[0] = (*rdev)->wiphy_idx + 1;
10661 /* add 1 to know if it was NULL */
10662 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10663 cb->args[2] = vcmd_idx;
10664 cb->args[3] = (unsigned long)data;
10665 cb->args[4] = data_len;
10666
10667 /* keep rtnl locked in successful case */
10668 return 0;
10669 out_unlock:
10670 rtnl_unlock();
10671 return err;
10672 }
10673
10674 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10675 struct netlink_callback *cb)
10676 {
10677 struct cfg80211_registered_device *rdev;
10678 struct wireless_dev *wdev;
10679 unsigned int vcmd_idx;
10680 const struct wiphy_vendor_command *vcmd;
10681 void *data;
10682 int data_len;
10683 int err;
10684 struct nlattr *vendor_data;
10685
10686 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10687 if (err)
10688 return err;
10689
10690 vcmd_idx = cb->args[2];
10691 data = (void *)cb->args[3];
10692 data_len = cb->args[4];
10693 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10694
10695 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10696 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10697 if (!wdev)
10698 return -EINVAL;
10699 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10700 !wdev->netdev)
10701 return -EINVAL;
10702
10703 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10704 if (wdev->netdev &&
10705 !netif_running(wdev->netdev))
10706 return -ENETDOWN;
10707 if (!wdev->netdev && !wdev->p2p_started)
10708 return -ENETDOWN;
10709 }
10710 }
10711
10712 while (1) {
10713 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10714 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10715 NL80211_CMD_VENDOR);
10716 if (!hdr)
10717 break;
10718
10719 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10720 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10721 wdev_id(wdev),
10722 NL80211_ATTR_PAD))) {
10723 genlmsg_cancel(skb, hdr);
10724 break;
10725 }
10726
10727 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10728 if (!vendor_data) {
10729 genlmsg_cancel(skb, hdr);
10730 break;
10731 }
10732
10733 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10734 (unsigned long *)&cb->args[5]);
10735 nla_nest_end(skb, vendor_data);
10736
10737 if (err == -ENOBUFS || err == -ENOENT) {
10738 genlmsg_cancel(skb, hdr);
10739 break;
10740 } else if (err) {
10741 genlmsg_cancel(skb, hdr);
10742 goto out;
10743 }
10744
10745 genlmsg_end(skb, hdr);
10746 }
10747
10748 err = skb->len;
10749 out:
10750 rtnl_unlock();
10751 return err;
10752 }
10753
10754 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10755 enum nl80211_commands cmd,
10756 enum nl80211_attrs attr,
10757 int approxlen)
10758 {
10759 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10760
10761 if (WARN_ON(!rdev->cur_cmd_info))
10762 return NULL;
10763
10764 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10765 rdev->cur_cmd_info->snd_portid,
10766 rdev->cur_cmd_info->snd_seq,
10767 cmd, attr, NULL, GFP_KERNEL);
10768 }
10769 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10770
10771 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10772 {
10773 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10774 void *hdr = ((void **)skb->cb)[1];
10775 struct nlattr *data = ((void **)skb->cb)[2];
10776
10777 /* clear CB data for netlink core to own from now on */
10778 memset(skb->cb, 0, sizeof(skb->cb));
10779
10780 if (WARN_ON(!rdev->cur_cmd_info)) {
10781 kfree_skb(skb);
10782 return -EINVAL;
10783 }
10784
10785 nla_nest_end(skb, data);
10786 genlmsg_end(skb, hdr);
10787 return genlmsg_reply(skb, rdev->cur_cmd_info);
10788 }
10789 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10790
10791 static int nl80211_set_qos_map(struct sk_buff *skb,
10792 struct genl_info *info)
10793 {
10794 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10795 struct cfg80211_qos_map *qos_map = NULL;
10796 struct net_device *dev = info->user_ptr[1];
10797 u8 *pos, len, num_des, des_len, des;
10798 int ret;
10799
10800 if (!rdev->ops->set_qos_map)
10801 return -EOPNOTSUPP;
10802
10803 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10804 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10805 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10806
10807 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10808 len > IEEE80211_QOS_MAP_LEN_MAX)
10809 return -EINVAL;
10810
10811 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10812 if (!qos_map)
10813 return -ENOMEM;
10814
10815 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10816 if (num_des) {
10817 des_len = num_des *
10818 sizeof(struct cfg80211_dscp_exception);
10819 memcpy(qos_map->dscp_exception, pos, des_len);
10820 qos_map->num_des = num_des;
10821 for (des = 0; des < num_des; des++) {
10822 if (qos_map->dscp_exception[des].up > 7) {
10823 kfree(qos_map);
10824 return -EINVAL;
10825 }
10826 }
10827 pos += des_len;
10828 }
10829 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10830 }
10831
10832 wdev_lock(dev->ieee80211_ptr);
10833 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10834 if (!ret)
10835 ret = rdev_set_qos_map(rdev, dev, qos_map);
10836 wdev_unlock(dev->ieee80211_ptr);
10837
10838 kfree(qos_map);
10839 return ret;
10840 }
10841
10842 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10843 {
10844 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10845 struct net_device *dev = info->user_ptr[1];
10846 struct wireless_dev *wdev = dev->ieee80211_ptr;
10847 const u8 *peer;
10848 u8 tsid, up;
10849 u16 admitted_time = 0;
10850 int err;
10851
10852 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10853 return -EOPNOTSUPP;
10854
10855 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10856 !info->attrs[NL80211_ATTR_USER_PRIO])
10857 return -EINVAL;
10858
10859 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10860 if (tsid >= IEEE80211_NUM_TIDS)
10861 return -EINVAL;
10862
10863 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10864 if (up >= IEEE80211_NUM_UPS)
10865 return -EINVAL;
10866
10867 /* WMM uses TIDs 0-7 even for TSPEC */
10868 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10869 /* TODO: handle 802.11 TSPEC/admission control
10870 * need more attributes for that (e.g. BA session requirement);
10871 * change the WMM adminssion test above to allow both then
10872 */
10873 return -EINVAL;
10874 }
10875
10876 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10877
10878 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10879 admitted_time =
10880 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10881 if (!admitted_time)
10882 return -EINVAL;
10883 }
10884
10885 wdev_lock(wdev);
10886 switch (wdev->iftype) {
10887 case NL80211_IFTYPE_STATION:
10888 case NL80211_IFTYPE_P2P_CLIENT:
10889 if (wdev->current_bss)
10890 break;
10891 err = -ENOTCONN;
10892 goto out;
10893 default:
10894 err = -EOPNOTSUPP;
10895 goto out;
10896 }
10897
10898 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10899
10900 out:
10901 wdev_unlock(wdev);
10902 return err;
10903 }
10904
10905 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10906 {
10907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10908 struct net_device *dev = info->user_ptr[1];
10909 struct wireless_dev *wdev = dev->ieee80211_ptr;
10910 const u8 *peer;
10911 u8 tsid;
10912 int err;
10913
10914 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10915 return -EINVAL;
10916
10917 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10918 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10919
10920 wdev_lock(wdev);
10921 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10922 wdev_unlock(wdev);
10923
10924 return err;
10925 }
10926
10927 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10928 struct genl_info *info)
10929 {
10930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10931 struct net_device *dev = info->user_ptr[1];
10932 struct wireless_dev *wdev = dev->ieee80211_ptr;
10933 struct cfg80211_chan_def chandef = {};
10934 const u8 *addr;
10935 u8 oper_class;
10936 int err;
10937
10938 if (!rdev->ops->tdls_channel_switch ||
10939 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10940 return -EOPNOTSUPP;
10941
10942 switch (dev->ieee80211_ptr->iftype) {
10943 case NL80211_IFTYPE_STATION:
10944 case NL80211_IFTYPE_P2P_CLIENT:
10945 break;
10946 default:
10947 return -EOPNOTSUPP;
10948 }
10949
10950 if (!info->attrs[NL80211_ATTR_MAC] ||
10951 !info->attrs[NL80211_ATTR_OPER_CLASS])
10952 return -EINVAL;
10953
10954 err = nl80211_parse_chandef(rdev, info, &chandef);
10955 if (err)
10956 return err;
10957
10958 /*
10959 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10960 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10961 * specification is not defined for them.
10962 */
10963 if (chandef.chan->band == NL80211_BAND_2GHZ &&
10964 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10965 chandef.width != NL80211_CHAN_WIDTH_20)
10966 return -EINVAL;
10967
10968 /* we will be active on the TDLS link */
10969 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10970 wdev->iftype))
10971 return -EINVAL;
10972
10973 /* don't allow switching to DFS channels */
10974 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10975 return -EINVAL;
10976
10977 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10978 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10979
10980 wdev_lock(wdev);
10981 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10982 wdev_unlock(wdev);
10983
10984 return err;
10985 }
10986
10987 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10988 struct genl_info *info)
10989 {
10990 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10991 struct net_device *dev = info->user_ptr[1];
10992 struct wireless_dev *wdev = dev->ieee80211_ptr;
10993 const u8 *addr;
10994
10995 if (!rdev->ops->tdls_channel_switch ||
10996 !rdev->ops->tdls_cancel_channel_switch ||
10997 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10998 return -EOPNOTSUPP;
10999
11000 switch (dev->ieee80211_ptr->iftype) {
11001 case NL80211_IFTYPE_STATION:
11002 case NL80211_IFTYPE_P2P_CLIENT:
11003 break;
11004 default:
11005 return -EOPNOTSUPP;
11006 }
11007
11008 if (!info->attrs[NL80211_ATTR_MAC])
11009 return -EINVAL;
11010
11011 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11012
11013 wdev_lock(wdev);
11014 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11015 wdev_unlock(wdev);
11016
11017 return 0;
11018 }
11019
11020 #define NL80211_FLAG_NEED_WIPHY 0x01
11021 #define NL80211_FLAG_NEED_NETDEV 0x02
11022 #define NL80211_FLAG_NEED_RTNL 0x04
11023 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
11024 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
11025 NL80211_FLAG_CHECK_NETDEV_UP)
11026 #define NL80211_FLAG_NEED_WDEV 0x10
11027 /* If a netdev is associated, it must be UP, P2P must be started */
11028 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
11029 NL80211_FLAG_CHECK_NETDEV_UP)
11030 #define NL80211_FLAG_CLEAR_SKB 0x20
11031
11032 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11033 struct genl_info *info)
11034 {
11035 struct cfg80211_registered_device *rdev;
11036 struct wireless_dev *wdev;
11037 struct net_device *dev;
11038 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11039
11040 if (rtnl)
11041 rtnl_lock();
11042
11043 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11044 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11045 if (IS_ERR(rdev)) {
11046 if (rtnl)
11047 rtnl_unlock();
11048 return PTR_ERR(rdev);
11049 }
11050 info->user_ptr[0] = rdev;
11051 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11052 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11053 ASSERT_RTNL();
11054
11055 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11056 info->attrs);
11057 if (IS_ERR(wdev)) {
11058 if (rtnl)
11059 rtnl_unlock();
11060 return PTR_ERR(wdev);
11061 }
11062
11063 dev = wdev->netdev;
11064 rdev = wiphy_to_rdev(wdev->wiphy);
11065
11066 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11067 if (!dev) {
11068 if (rtnl)
11069 rtnl_unlock();
11070 return -EINVAL;
11071 }
11072
11073 info->user_ptr[1] = dev;
11074 } else {
11075 info->user_ptr[1] = wdev;
11076 }
11077
11078 if (dev) {
11079 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11080 !netif_running(dev)) {
11081 if (rtnl)
11082 rtnl_unlock();
11083 return -ENETDOWN;
11084 }
11085
11086 dev_hold(dev);
11087 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
11088 if (!wdev->p2p_started) {
11089 if (rtnl)
11090 rtnl_unlock();
11091 return -ENETDOWN;
11092 }
11093 }
11094
11095 info->user_ptr[0] = rdev;
11096 }
11097
11098 return 0;
11099 }
11100
11101 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11102 struct genl_info *info)
11103 {
11104 if (info->user_ptr[1]) {
11105 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11106 struct wireless_dev *wdev = info->user_ptr[1];
11107
11108 if (wdev->netdev)
11109 dev_put(wdev->netdev);
11110 } else {
11111 dev_put(info->user_ptr[1]);
11112 }
11113 }
11114
11115 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11116 rtnl_unlock();
11117
11118 /* If needed, clear the netlink message payload from the SKB
11119 * as it might contain key data that shouldn't stick around on
11120 * the heap after the SKB is freed. The netlink message header
11121 * is still needed for further processing, so leave it intact.
11122 */
11123 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11124 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11125
11126 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11127 }
11128 }
11129
11130 static const struct genl_ops nl80211_ops[] = {
11131 {
11132 .cmd = NL80211_CMD_GET_WIPHY,
11133 .doit = nl80211_get_wiphy,
11134 .dumpit = nl80211_dump_wiphy,
11135 .done = nl80211_dump_wiphy_done,
11136 .policy = nl80211_policy,
11137 /* can be retrieved by unprivileged users */
11138 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11139 NL80211_FLAG_NEED_RTNL,
11140 },
11141 {
11142 .cmd = NL80211_CMD_SET_WIPHY,
11143 .doit = nl80211_set_wiphy,
11144 .policy = nl80211_policy,
11145 .flags = GENL_UNS_ADMIN_PERM,
11146 .internal_flags = NL80211_FLAG_NEED_RTNL,
11147 },
11148 {
11149 .cmd = NL80211_CMD_GET_INTERFACE,
11150 .doit = nl80211_get_interface,
11151 .dumpit = nl80211_dump_interface,
11152 .policy = nl80211_policy,
11153 /* can be retrieved by unprivileged users */
11154 .internal_flags = NL80211_FLAG_NEED_WDEV |
11155 NL80211_FLAG_NEED_RTNL,
11156 },
11157 {
11158 .cmd = NL80211_CMD_SET_INTERFACE,
11159 .doit = nl80211_set_interface,
11160 .policy = nl80211_policy,
11161 .flags = GENL_UNS_ADMIN_PERM,
11162 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11163 NL80211_FLAG_NEED_RTNL,
11164 },
11165 {
11166 .cmd = NL80211_CMD_NEW_INTERFACE,
11167 .doit = nl80211_new_interface,
11168 .policy = nl80211_policy,
11169 .flags = GENL_UNS_ADMIN_PERM,
11170 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11171 NL80211_FLAG_NEED_RTNL,
11172 },
11173 {
11174 .cmd = NL80211_CMD_DEL_INTERFACE,
11175 .doit = nl80211_del_interface,
11176 .policy = nl80211_policy,
11177 .flags = GENL_UNS_ADMIN_PERM,
11178 .internal_flags = NL80211_FLAG_NEED_WDEV |
11179 NL80211_FLAG_NEED_RTNL,
11180 },
11181 {
11182 .cmd = NL80211_CMD_GET_KEY,
11183 .doit = nl80211_get_key,
11184 .policy = nl80211_policy,
11185 .flags = GENL_UNS_ADMIN_PERM,
11186 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11187 NL80211_FLAG_NEED_RTNL,
11188 },
11189 {
11190 .cmd = NL80211_CMD_SET_KEY,
11191 .doit = nl80211_set_key,
11192 .policy = nl80211_policy,
11193 .flags = GENL_UNS_ADMIN_PERM,
11194 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11195 NL80211_FLAG_NEED_RTNL |
11196 NL80211_FLAG_CLEAR_SKB,
11197 },
11198 {
11199 .cmd = NL80211_CMD_NEW_KEY,
11200 .doit = nl80211_new_key,
11201 .policy = nl80211_policy,
11202 .flags = GENL_UNS_ADMIN_PERM,
11203 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11204 NL80211_FLAG_NEED_RTNL |
11205 NL80211_FLAG_CLEAR_SKB,
11206 },
11207 {
11208 .cmd = NL80211_CMD_DEL_KEY,
11209 .doit = nl80211_del_key,
11210 .policy = nl80211_policy,
11211 .flags = GENL_UNS_ADMIN_PERM,
11212 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11213 NL80211_FLAG_NEED_RTNL,
11214 },
11215 {
11216 .cmd = NL80211_CMD_SET_BEACON,
11217 .policy = nl80211_policy,
11218 .flags = GENL_UNS_ADMIN_PERM,
11219 .doit = nl80211_set_beacon,
11220 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11221 NL80211_FLAG_NEED_RTNL,
11222 },
11223 {
11224 .cmd = NL80211_CMD_START_AP,
11225 .policy = nl80211_policy,
11226 .flags = GENL_UNS_ADMIN_PERM,
11227 .doit = nl80211_start_ap,
11228 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11229 NL80211_FLAG_NEED_RTNL,
11230 },
11231 {
11232 .cmd = NL80211_CMD_STOP_AP,
11233 .policy = nl80211_policy,
11234 .flags = GENL_UNS_ADMIN_PERM,
11235 .doit = nl80211_stop_ap,
11236 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11237 NL80211_FLAG_NEED_RTNL,
11238 },
11239 {
11240 .cmd = NL80211_CMD_GET_STATION,
11241 .doit = nl80211_get_station,
11242 .dumpit = nl80211_dump_station,
11243 .policy = nl80211_policy,
11244 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11245 NL80211_FLAG_NEED_RTNL,
11246 },
11247 {
11248 .cmd = NL80211_CMD_SET_STATION,
11249 .doit = nl80211_set_station,
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_NEW_STATION,
11257 .doit = nl80211_new_station,
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_DEL_STATION,
11265 .doit = nl80211_del_station,
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_MPATH,
11273 .doit = nl80211_get_mpath,
11274 .dumpit = nl80211_dump_mpath,
11275 .policy = nl80211_policy,
11276 .flags = GENL_UNS_ADMIN_PERM,
11277 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11278 NL80211_FLAG_NEED_RTNL,
11279 },
11280 {
11281 .cmd = NL80211_CMD_GET_MPP,
11282 .doit = nl80211_get_mpp,
11283 .dumpit = nl80211_dump_mpp,
11284 .policy = nl80211_policy,
11285 .flags = GENL_UNS_ADMIN_PERM,
11286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11287 NL80211_FLAG_NEED_RTNL,
11288 },
11289 {
11290 .cmd = NL80211_CMD_SET_MPATH,
11291 .doit = nl80211_set_mpath,
11292 .policy = nl80211_policy,
11293 .flags = GENL_UNS_ADMIN_PERM,
11294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11295 NL80211_FLAG_NEED_RTNL,
11296 },
11297 {
11298 .cmd = NL80211_CMD_NEW_MPATH,
11299 .doit = nl80211_new_mpath,
11300 .policy = nl80211_policy,
11301 .flags = GENL_UNS_ADMIN_PERM,
11302 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11303 NL80211_FLAG_NEED_RTNL,
11304 },
11305 {
11306 .cmd = NL80211_CMD_DEL_MPATH,
11307 .doit = nl80211_del_mpath,
11308 .policy = nl80211_policy,
11309 .flags = GENL_UNS_ADMIN_PERM,
11310 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11311 NL80211_FLAG_NEED_RTNL,
11312 },
11313 {
11314 .cmd = NL80211_CMD_SET_BSS,
11315 .doit = nl80211_set_bss,
11316 .policy = nl80211_policy,
11317 .flags = GENL_UNS_ADMIN_PERM,
11318 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11319 NL80211_FLAG_NEED_RTNL,
11320 },
11321 {
11322 .cmd = NL80211_CMD_GET_REG,
11323 .doit = nl80211_get_reg_do,
11324 .dumpit = nl80211_get_reg_dump,
11325 .policy = nl80211_policy,
11326 .internal_flags = NL80211_FLAG_NEED_RTNL,
11327 /* can be retrieved by unprivileged users */
11328 },
11329 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
11330 {
11331 .cmd = NL80211_CMD_SET_REG,
11332 .doit = nl80211_set_reg,
11333 .policy = nl80211_policy,
11334 .flags = GENL_ADMIN_PERM,
11335 .internal_flags = NL80211_FLAG_NEED_RTNL,
11336 },
11337 #endif
11338 {
11339 .cmd = NL80211_CMD_REQ_SET_REG,
11340 .doit = nl80211_req_set_reg,
11341 .policy = nl80211_policy,
11342 .flags = GENL_ADMIN_PERM,
11343 },
11344 {
11345 .cmd = NL80211_CMD_GET_MESH_CONFIG,
11346 .doit = nl80211_get_mesh_config,
11347 .policy = nl80211_policy,
11348 /* can be retrieved by unprivileged users */
11349 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11350 NL80211_FLAG_NEED_RTNL,
11351 },
11352 {
11353 .cmd = NL80211_CMD_SET_MESH_CONFIG,
11354 .doit = nl80211_update_mesh_config,
11355 .policy = nl80211_policy,
11356 .flags = GENL_UNS_ADMIN_PERM,
11357 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11358 NL80211_FLAG_NEED_RTNL,
11359 },
11360 {
11361 .cmd = NL80211_CMD_TRIGGER_SCAN,
11362 .doit = nl80211_trigger_scan,
11363 .policy = nl80211_policy,
11364 .flags = GENL_UNS_ADMIN_PERM,
11365 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11366 NL80211_FLAG_NEED_RTNL,
11367 },
11368 {
11369 .cmd = NL80211_CMD_ABORT_SCAN,
11370 .doit = nl80211_abort_scan,
11371 .policy = nl80211_policy,
11372 .flags = GENL_UNS_ADMIN_PERM,
11373 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11374 NL80211_FLAG_NEED_RTNL,
11375 },
11376 {
11377 .cmd = NL80211_CMD_GET_SCAN,
11378 .policy = nl80211_policy,
11379 .dumpit = nl80211_dump_scan,
11380 },
11381 {
11382 .cmd = NL80211_CMD_START_SCHED_SCAN,
11383 .doit = nl80211_start_sched_scan,
11384 .policy = nl80211_policy,
11385 .flags = GENL_UNS_ADMIN_PERM,
11386 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11387 NL80211_FLAG_NEED_RTNL,
11388 },
11389 {
11390 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
11391 .doit = nl80211_stop_sched_scan,
11392 .policy = nl80211_policy,
11393 .flags = GENL_UNS_ADMIN_PERM,
11394 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11395 NL80211_FLAG_NEED_RTNL,
11396 },
11397 {
11398 .cmd = NL80211_CMD_AUTHENTICATE,
11399 .doit = nl80211_authenticate,
11400 .policy = nl80211_policy,
11401 .flags = GENL_UNS_ADMIN_PERM,
11402 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11403 NL80211_FLAG_NEED_RTNL |
11404 NL80211_FLAG_CLEAR_SKB,
11405 },
11406 {
11407 .cmd = NL80211_CMD_ASSOCIATE,
11408 .doit = nl80211_associate,
11409 .policy = nl80211_policy,
11410 .flags = GENL_UNS_ADMIN_PERM,
11411 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11412 NL80211_FLAG_NEED_RTNL,
11413 },
11414 {
11415 .cmd = NL80211_CMD_DEAUTHENTICATE,
11416 .doit = nl80211_deauthenticate,
11417 .policy = nl80211_policy,
11418 .flags = GENL_UNS_ADMIN_PERM,
11419 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11420 NL80211_FLAG_NEED_RTNL,
11421 },
11422 {
11423 .cmd = NL80211_CMD_DISASSOCIATE,
11424 .doit = nl80211_disassociate,
11425 .policy = nl80211_policy,
11426 .flags = GENL_UNS_ADMIN_PERM,
11427 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11428 NL80211_FLAG_NEED_RTNL,
11429 },
11430 {
11431 .cmd = NL80211_CMD_JOIN_IBSS,
11432 .doit = nl80211_join_ibss,
11433 .policy = nl80211_policy,
11434 .flags = GENL_UNS_ADMIN_PERM,
11435 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11436 NL80211_FLAG_NEED_RTNL,
11437 },
11438 {
11439 .cmd = NL80211_CMD_LEAVE_IBSS,
11440 .doit = nl80211_leave_ibss,
11441 .policy = nl80211_policy,
11442 .flags = GENL_UNS_ADMIN_PERM,
11443 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11444 NL80211_FLAG_NEED_RTNL,
11445 },
11446 #ifdef CONFIG_NL80211_TESTMODE
11447 {
11448 .cmd = NL80211_CMD_TESTMODE,
11449 .doit = nl80211_testmode_do,
11450 .dumpit = nl80211_testmode_dump,
11451 .policy = nl80211_policy,
11452 .flags = GENL_UNS_ADMIN_PERM,
11453 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11454 NL80211_FLAG_NEED_RTNL,
11455 },
11456 #endif
11457 {
11458 .cmd = NL80211_CMD_CONNECT,
11459 .doit = nl80211_connect,
11460 .policy = nl80211_policy,
11461 .flags = GENL_UNS_ADMIN_PERM,
11462 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11463 NL80211_FLAG_NEED_RTNL,
11464 },
11465 {
11466 .cmd = NL80211_CMD_DISCONNECT,
11467 .doit = nl80211_disconnect,
11468 .policy = nl80211_policy,
11469 .flags = GENL_UNS_ADMIN_PERM,
11470 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11471 NL80211_FLAG_NEED_RTNL,
11472 },
11473 {
11474 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11475 .doit = nl80211_wiphy_netns,
11476 .policy = nl80211_policy,
11477 .flags = GENL_UNS_ADMIN_PERM,
11478 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11479 NL80211_FLAG_NEED_RTNL,
11480 },
11481 {
11482 .cmd = NL80211_CMD_GET_SURVEY,
11483 .policy = nl80211_policy,
11484 .dumpit = nl80211_dump_survey,
11485 },
11486 {
11487 .cmd = NL80211_CMD_SET_PMKSA,
11488 .doit = nl80211_setdel_pmksa,
11489 .policy = nl80211_policy,
11490 .flags = GENL_UNS_ADMIN_PERM,
11491 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11492 NL80211_FLAG_NEED_RTNL,
11493 },
11494 {
11495 .cmd = NL80211_CMD_DEL_PMKSA,
11496 .doit = nl80211_setdel_pmksa,
11497 .policy = nl80211_policy,
11498 .flags = GENL_UNS_ADMIN_PERM,
11499 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11500 NL80211_FLAG_NEED_RTNL,
11501 },
11502 {
11503 .cmd = NL80211_CMD_FLUSH_PMKSA,
11504 .doit = nl80211_flush_pmksa,
11505 .policy = nl80211_policy,
11506 .flags = GENL_UNS_ADMIN_PERM,
11507 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11508 NL80211_FLAG_NEED_RTNL,
11509 },
11510 {
11511 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11512 .doit = nl80211_remain_on_channel,
11513 .policy = nl80211_policy,
11514 .flags = GENL_UNS_ADMIN_PERM,
11515 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11516 NL80211_FLAG_NEED_RTNL,
11517 },
11518 {
11519 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11520 .doit = nl80211_cancel_remain_on_channel,
11521 .policy = nl80211_policy,
11522 .flags = GENL_UNS_ADMIN_PERM,
11523 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11524 NL80211_FLAG_NEED_RTNL,
11525 },
11526 {
11527 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11528 .doit = nl80211_set_tx_bitrate_mask,
11529 .policy = nl80211_policy,
11530 .flags = GENL_UNS_ADMIN_PERM,
11531 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11532 NL80211_FLAG_NEED_RTNL,
11533 },
11534 {
11535 .cmd = NL80211_CMD_REGISTER_FRAME,
11536 .doit = nl80211_register_mgmt,
11537 .policy = nl80211_policy,
11538 .flags = GENL_UNS_ADMIN_PERM,
11539 .internal_flags = NL80211_FLAG_NEED_WDEV |
11540 NL80211_FLAG_NEED_RTNL,
11541 },
11542 {
11543 .cmd = NL80211_CMD_FRAME,
11544 .doit = nl80211_tx_mgmt,
11545 .policy = nl80211_policy,
11546 .flags = GENL_UNS_ADMIN_PERM,
11547 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11548 NL80211_FLAG_NEED_RTNL,
11549 },
11550 {
11551 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11552 .doit = nl80211_tx_mgmt_cancel_wait,
11553 .policy = nl80211_policy,
11554 .flags = GENL_UNS_ADMIN_PERM,
11555 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11556 NL80211_FLAG_NEED_RTNL,
11557 },
11558 {
11559 .cmd = NL80211_CMD_SET_POWER_SAVE,
11560 .doit = nl80211_set_power_save,
11561 .policy = nl80211_policy,
11562 .flags = GENL_UNS_ADMIN_PERM,
11563 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11564 NL80211_FLAG_NEED_RTNL,
11565 },
11566 {
11567 .cmd = NL80211_CMD_GET_POWER_SAVE,
11568 .doit = nl80211_get_power_save,
11569 .policy = nl80211_policy,
11570 /* can be retrieved by unprivileged users */
11571 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11572 NL80211_FLAG_NEED_RTNL,
11573 },
11574 {
11575 .cmd = NL80211_CMD_SET_CQM,
11576 .doit = nl80211_set_cqm,
11577 .policy = nl80211_policy,
11578 .flags = GENL_UNS_ADMIN_PERM,
11579 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11580 NL80211_FLAG_NEED_RTNL,
11581 },
11582 {
11583 .cmd = NL80211_CMD_SET_CHANNEL,
11584 .doit = nl80211_set_channel,
11585 .policy = nl80211_policy,
11586 .flags = GENL_UNS_ADMIN_PERM,
11587 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11588 NL80211_FLAG_NEED_RTNL,
11589 },
11590 {
11591 .cmd = NL80211_CMD_SET_WDS_PEER,
11592 .doit = nl80211_set_wds_peer,
11593 .policy = nl80211_policy,
11594 .flags = GENL_UNS_ADMIN_PERM,
11595 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11596 NL80211_FLAG_NEED_RTNL,
11597 },
11598 {
11599 .cmd = NL80211_CMD_JOIN_MESH,
11600 .doit = nl80211_join_mesh,
11601 .policy = nl80211_policy,
11602 .flags = GENL_UNS_ADMIN_PERM,
11603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11604 NL80211_FLAG_NEED_RTNL,
11605 },
11606 {
11607 .cmd = NL80211_CMD_LEAVE_MESH,
11608 .doit = nl80211_leave_mesh,
11609 .policy = nl80211_policy,
11610 .flags = GENL_UNS_ADMIN_PERM,
11611 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11612 NL80211_FLAG_NEED_RTNL,
11613 },
11614 {
11615 .cmd = NL80211_CMD_JOIN_OCB,
11616 .doit = nl80211_join_ocb,
11617 .policy = nl80211_policy,
11618 .flags = GENL_UNS_ADMIN_PERM,
11619 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11620 NL80211_FLAG_NEED_RTNL,
11621 },
11622 {
11623 .cmd = NL80211_CMD_LEAVE_OCB,
11624 .doit = nl80211_leave_ocb,
11625 .policy = nl80211_policy,
11626 .flags = GENL_UNS_ADMIN_PERM,
11627 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11628 NL80211_FLAG_NEED_RTNL,
11629 },
11630 #ifdef CONFIG_PM
11631 {
11632 .cmd = NL80211_CMD_GET_WOWLAN,
11633 .doit = nl80211_get_wowlan,
11634 .policy = nl80211_policy,
11635 /* can be retrieved by unprivileged users */
11636 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11637 NL80211_FLAG_NEED_RTNL,
11638 },
11639 {
11640 .cmd = NL80211_CMD_SET_WOWLAN,
11641 .doit = nl80211_set_wowlan,
11642 .policy = nl80211_policy,
11643 .flags = GENL_UNS_ADMIN_PERM,
11644 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11645 NL80211_FLAG_NEED_RTNL,
11646 },
11647 #endif
11648 {
11649 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11650 .doit = nl80211_set_rekey_data,
11651 .policy = nl80211_policy,
11652 .flags = GENL_UNS_ADMIN_PERM,
11653 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11654 NL80211_FLAG_NEED_RTNL |
11655 NL80211_FLAG_CLEAR_SKB,
11656 },
11657 {
11658 .cmd = NL80211_CMD_TDLS_MGMT,
11659 .doit = nl80211_tdls_mgmt,
11660 .policy = nl80211_policy,
11661 .flags = GENL_UNS_ADMIN_PERM,
11662 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11663 NL80211_FLAG_NEED_RTNL,
11664 },
11665 {
11666 .cmd = NL80211_CMD_TDLS_OPER,
11667 .doit = nl80211_tdls_oper,
11668 .policy = nl80211_policy,
11669 .flags = GENL_UNS_ADMIN_PERM,
11670 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11671 NL80211_FLAG_NEED_RTNL,
11672 },
11673 {
11674 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11675 .doit = nl80211_register_unexpected_frame,
11676 .policy = nl80211_policy,
11677 .flags = GENL_UNS_ADMIN_PERM,
11678 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11679 NL80211_FLAG_NEED_RTNL,
11680 },
11681 {
11682 .cmd = NL80211_CMD_PROBE_CLIENT,
11683 .doit = nl80211_probe_client,
11684 .policy = nl80211_policy,
11685 .flags = GENL_UNS_ADMIN_PERM,
11686 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11687 NL80211_FLAG_NEED_RTNL,
11688 },
11689 {
11690 .cmd = NL80211_CMD_REGISTER_BEACONS,
11691 .doit = nl80211_register_beacons,
11692 .policy = nl80211_policy,
11693 .flags = GENL_UNS_ADMIN_PERM,
11694 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11695 NL80211_FLAG_NEED_RTNL,
11696 },
11697 {
11698 .cmd = NL80211_CMD_SET_NOACK_MAP,
11699 .doit = nl80211_set_noack_map,
11700 .policy = nl80211_policy,
11701 .flags = GENL_UNS_ADMIN_PERM,
11702 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11703 NL80211_FLAG_NEED_RTNL,
11704 },
11705 {
11706 .cmd = NL80211_CMD_START_P2P_DEVICE,
11707 .doit = nl80211_start_p2p_device,
11708 .policy = nl80211_policy,
11709 .flags = GENL_UNS_ADMIN_PERM,
11710 .internal_flags = NL80211_FLAG_NEED_WDEV |
11711 NL80211_FLAG_NEED_RTNL,
11712 },
11713 {
11714 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11715 .doit = nl80211_stop_p2p_device,
11716 .policy = nl80211_policy,
11717 .flags = GENL_UNS_ADMIN_PERM,
11718 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11719 NL80211_FLAG_NEED_RTNL,
11720 },
11721 {
11722 .cmd = NL80211_CMD_SET_MCAST_RATE,
11723 .doit = nl80211_set_mcast_rate,
11724 .policy = nl80211_policy,
11725 .flags = GENL_UNS_ADMIN_PERM,
11726 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11727 NL80211_FLAG_NEED_RTNL,
11728 },
11729 {
11730 .cmd = NL80211_CMD_SET_MAC_ACL,
11731 .doit = nl80211_set_mac_acl,
11732 .policy = nl80211_policy,
11733 .flags = GENL_UNS_ADMIN_PERM,
11734 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11735 NL80211_FLAG_NEED_RTNL,
11736 },
11737 {
11738 .cmd = NL80211_CMD_RADAR_DETECT,
11739 .doit = nl80211_start_radar_detection,
11740 .policy = nl80211_policy,
11741 .flags = GENL_UNS_ADMIN_PERM,
11742 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11743 NL80211_FLAG_NEED_RTNL,
11744 },
11745 {
11746 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11747 .doit = nl80211_get_protocol_features,
11748 .policy = nl80211_policy,
11749 },
11750 {
11751 .cmd = NL80211_CMD_UPDATE_FT_IES,
11752 .doit = nl80211_update_ft_ies,
11753 .policy = nl80211_policy,
11754 .flags = GENL_UNS_ADMIN_PERM,
11755 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11756 NL80211_FLAG_NEED_RTNL,
11757 },
11758 {
11759 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11760 .doit = nl80211_crit_protocol_start,
11761 .policy = nl80211_policy,
11762 .flags = GENL_UNS_ADMIN_PERM,
11763 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11764 NL80211_FLAG_NEED_RTNL,
11765 },
11766 {
11767 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11768 .doit = nl80211_crit_protocol_stop,
11769 .policy = nl80211_policy,
11770 .flags = GENL_UNS_ADMIN_PERM,
11771 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11772 NL80211_FLAG_NEED_RTNL,
11773 },
11774 {
11775 .cmd = NL80211_CMD_GET_COALESCE,
11776 .doit = nl80211_get_coalesce,
11777 .policy = nl80211_policy,
11778 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11779 NL80211_FLAG_NEED_RTNL,
11780 },
11781 {
11782 .cmd = NL80211_CMD_SET_COALESCE,
11783 .doit = nl80211_set_coalesce,
11784 .policy = nl80211_policy,
11785 .flags = GENL_UNS_ADMIN_PERM,
11786 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11787 NL80211_FLAG_NEED_RTNL,
11788 },
11789 {
11790 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11791 .doit = nl80211_channel_switch,
11792 .policy = nl80211_policy,
11793 .flags = GENL_UNS_ADMIN_PERM,
11794 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11795 NL80211_FLAG_NEED_RTNL,
11796 },
11797 {
11798 .cmd = NL80211_CMD_VENDOR,
11799 .doit = nl80211_vendor_cmd,
11800 .dumpit = nl80211_vendor_cmd_dump,
11801 .policy = nl80211_policy,
11802 .flags = GENL_UNS_ADMIN_PERM,
11803 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11804 NL80211_FLAG_NEED_RTNL,
11805 },
11806 {
11807 .cmd = NL80211_CMD_SET_QOS_MAP,
11808 .doit = nl80211_set_qos_map,
11809 .policy = nl80211_policy,
11810 .flags = GENL_UNS_ADMIN_PERM,
11811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11812 NL80211_FLAG_NEED_RTNL,
11813 },
11814 {
11815 .cmd = NL80211_CMD_ADD_TX_TS,
11816 .doit = nl80211_add_tx_ts,
11817 .policy = nl80211_policy,
11818 .flags = GENL_UNS_ADMIN_PERM,
11819 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11820 NL80211_FLAG_NEED_RTNL,
11821 },
11822 {
11823 .cmd = NL80211_CMD_DEL_TX_TS,
11824 .doit = nl80211_del_tx_ts,
11825 .policy = nl80211_policy,
11826 .flags = GENL_UNS_ADMIN_PERM,
11827 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11828 NL80211_FLAG_NEED_RTNL,
11829 },
11830 {
11831 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11832 .doit = nl80211_tdls_channel_switch,
11833 .policy = nl80211_policy,
11834 .flags = GENL_UNS_ADMIN_PERM,
11835 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11836 NL80211_FLAG_NEED_RTNL,
11837 },
11838 {
11839 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11840 .doit = nl80211_tdls_cancel_channel_switch,
11841 .policy = nl80211_policy,
11842 .flags = GENL_UNS_ADMIN_PERM,
11843 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11844 NL80211_FLAG_NEED_RTNL,
11845 },
11846 };
11847
11848 /* notification functions */
11849
11850 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11851 enum nl80211_commands cmd)
11852 {
11853 struct sk_buff *msg;
11854 struct nl80211_dump_wiphy_state state = {};
11855
11856 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11857 cmd != NL80211_CMD_DEL_WIPHY);
11858
11859 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11860 if (!msg)
11861 return;
11862
11863 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11864 nlmsg_free(msg);
11865 return;
11866 }
11867
11868 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11869 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11870 }
11871
11872 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
11873 struct wireless_dev *wdev,
11874 enum nl80211_commands cmd)
11875 {
11876 struct sk_buff *msg;
11877
11878 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
11879 cmd != NL80211_CMD_DEL_INTERFACE);
11880
11881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11882 if (!msg)
11883 return;
11884
11885 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
11886 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
11887 nlmsg_free(msg);
11888 return;
11889 }
11890
11891 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11892 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11893 }
11894
11895 static int nl80211_add_scan_req(struct sk_buff *msg,
11896 struct cfg80211_registered_device *rdev)
11897 {
11898 struct cfg80211_scan_request *req = rdev->scan_req;
11899 struct nlattr *nest;
11900 int i;
11901
11902 if (WARN_ON(!req))
11903 return 0;
11904
11905 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11906 if (!nest)
11907 goto nla_put_failure;
11908 for (i = 0; i < req->n_ssids; i++) {
11909 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11910 goto nla_put_failure;
11911 }
11912 nla_nest_end(msg, nest);
11913
11914 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11915 if (!nest)
11916 goto nla_put_failure;
11917 for (i = 0; i < req->n_channels; i++) {
11918 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11919 goto nla_put_failure;
11920 }
11921 nla_nest_end(msg, nest);
11922
11923 if (req->ie &&
11924 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11925 goto nla_put_failure;
11926
11927 if (req->flags &&
11928 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11929 goto nla_put_failure;
11930
11931 if (req->info.scan_start_tsf &&
11932 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
11933 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
11934 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
11935 req->info.tsf_bssid)))
11936 goto nla_put_failure;
11937
11938 return 0;
11939 nla_put_failure:
11940 return -ENOBUFS;
11941 }
11942
11943 static int nl80211_send_scan_msg(struct sk_buff *msg,
11944 struct cfg80211_registered_device *rdev,
11945 struct wireless_dev *wdev,
11946 u32 portid, u32 seq, int flags,
11947 u32 cmd)
11948 {
11949 void *hdr;
11950
11951 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11952 if (!hdr)
11953 return -1;
11954
11955 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11956 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11957 wdev->netdev->ifindex)) ||
11958 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11959 NL80211_ATTR_PAD))
11960 goto nla_put_failure;
11961
11962 /* ignore errors and send incomplete event anyway */
11963 nl80211_add_scan_req(msg, rdev);
11964
11965 genlmsg_end(msg, hdr);
11966 return 0;
11967
11968 nla_put_failure:
11969 genlmsg_cancel(msg, hdr);
11970 return -EMSGSIZE;
11971 }
11972
11973 static int
11974 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11975 struct cfg80211_registered_device *rdev,
11976 struct net_device *netdev,
11977 u32 portid, u32 seq, int flags, u32 cmd)
11978 {
11979 void *hdr;
11980
11981 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11982 if (!hdr)
11983 return -1;
11984
11985 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11986 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11987 goto nla_put_failure;
11988
11989 genlmsg_end(msg, hdr);
11990 return 0;
11991
11992 nla_put_failure:
11993 genlmsg_cancel(msg, hdr);
11994 return -EMSGSIZE;
11995 }
11996
11997 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11998 struct wireless_dev *wdev)
11999 {
12000 struct sk_buff *msg;
12001
12002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12003 if (!msg)
12004 return;
12005
12006 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12007 NL80211_CMD_TRIGGER_SCAN) < 0) {
12008 nlmsg_free(msg);
12009 return;
12010 }
12011
12012 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12013 NL80211_MCGRP_SCAN, GFP_KERNEL);
12014 }
12015
12016 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12017 struct wireless_dev *wdev, bool aborted)
12018 {
12019 struct sk_buff *msg;
12020
12021 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12022 if (!msg)
12023 return NULL;
12024
12025 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12026 aborted ? NL80211_CMD_SCAN_ABORTED :
12027 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12028 nlmsg_free(msg);
12029 return NULL;
12030 }
12031
12032 return msg;
12033 }
12034
12035 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12036 struct sk_buff *msg)
12037 {
12038 if (!msg)
12039 return;
12040
12041 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12042 NL80211_MCGRP_SCAN, GFP_KERNEL);
12043 }
12044
12045 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12046 struct net_device *netdev)
12047 {
12048 struct sk_buff *msg;
12049
12050 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12051 if (!msg)
12052 return;
12053
12054 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12055 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12056 nlmsg_free(msg);
12057 return;
12058 }
12059
12060 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12061 NL80211_MCGRP_SCAN, GFP_KERNEL);
12062 }
12063
12064 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12065 struct net_device *netdev, u32 cmd)
12066 {
12067 struct sk_buff *msg;
12068
12069 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12070 if (!msg)
12071 return;
12072
12073 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12074 nlmsg_free(msg);
12075 return;
12076 }
12077
12078 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12079 NL80211_MCGRP_SCAN, GFP_KERNEL);
12080 }
12081
12082 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12083 struct regulatory_request *request)
12084 {
12085 /* Userspace can always count this one always being set */
12086 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12087 goto nla_put_failure;
12088
12089 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12090 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12091 NL80211_REGDOM_TYPE_WORLD))
12092 goto nla_put_failure;
12093 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12094 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12095 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12096 goto nla_put_failure;
12097 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12098 request->intersect) {
12099 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12100 NL80211_REGDOM_TYPE_INTERSECTION))
12101 goto nla_put_failure;
12102 } else {
12103 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12104 NL80211_REGDOM_TYPE_COUNTRY) ||
12105 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12106 request->alpha2))
12107 goto nla_put_failure;
12108 }
12109
12110 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12111 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12112
12113 if (wiphy &&
12114 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12115 goto nla_put_failure;
12116
12117 if (wiphy &&
12118 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12119 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12120 goto nla_put_failure;
12121 }
12122
12123 return true;
12124
12125 nla_put_failure:
12126 return false;
12127 }
12128
12129 /*
12130 * This can happen on global regulatory changes or device specific settings
12131 * based on custom regulatory domains.
12132 */
12133 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
12134 struct regulatory_request *request)
12135 {
12136 struct sk_buff *msg;
12137 void *hdr;
12138
12139 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12140 if (!msg)
12141 return;
12142
12143 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
12144 if (!hdr) {
12145 nlmsg_free(msg);
12146 return;
12147 }
12148
12149 if (nl80211_reg_change_event_fill(msg, request) == false)
12150 goto nla_put_failure;
12151
12152 genlmsg_end(msg, hdr);
12153
12154 rcu_read_lock();
12155 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12156 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12157 rcu_read_unlock();
12158
12159 return;
12160
12161 nla_put_failure:
12162 genlmsg_cancel(msg, hdr);
12163 nlmsg_free(msg);
12164 }
12165
12166 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
12167 struct net_device *netdev,
12168 const u8 *buf, size_t len,
12169 enum nl80211_commands cmd, gfp_t gfp,
12170 int uapsd_queues)
12171 {
12172 struct sk_buff *msg;
12173 void *hdr;
12174
12175 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12176 if (!msg)
12177 return;
12178
12179 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12180 if (!hdr) {
12181 nlmsg_free(msg);
12182 return;
12183 }
12184
12185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12186 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12187 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
12188 goto nla_put_failure;
12189
12190 if (uapsd_queues >= 0) {
12191 struct nlattr *nla_wmm =
12192 nla_nest_start(msg, NL80211_ATTR_STA_WME);
12193 if (!nla_wmm)
12194 goto nla_put_failure;
12195
12196 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
12197 uapsd_queues))
12198 goto nla_put_failure;
12199
12200 nla_nest_end(msg, nla_wmm);
12201 }
12202
12203 genlmsg_end(msg, hdr);
12204
12205 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12206 NL80211_MCGRP_MLME, gfp);
12207 return;
12208
12209 nla_put_failure:
12210 genlmsg_cancel(msg, hdr);
12211 nlmsg_free(msg);
12212 }
12213
12214 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
12215 struct net_device *netdev, const u8 *buf,
12216 size_t len, gfp_t gfp)
12217 {
12218 nl80211_send_mlme_event(rdev, netdev, buf, len,
12219 NL80211_CMD_AUTHENTICATE, gfp, -1);
12220 }
12221
12222 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
12223 struct net_device *netdev, const u8 *buf,
12224 size_t len, gfp_t gfp, int uapsd_queues)
12225 {
12226 nl80211_send_mlme_event(rdev, netdev, buf, len,
12227 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
12228 }
12229
12230 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
12231 struct net_device *netdev, const u8 *buf,
12232 size_t len, gfp_t gfp)
12233 {
12234 nl80211_send_mlme_event(rdev, netdev, buf, len,
12235 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
12236 }
12237
12238 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
12239 struct net_device *netdev, const u8 *buf,
12240 size_t len, gfp_t gfp)
12241 {
12242 nl80211_send_mlme_event(rdev, netdev, buf, len,
12243 NL80211_CMD_DISASSOCIATE, gfp, -1);
12244 }
12245
12246 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
12247 size_t len)
12248 {
12249 struct wireless_dev *wdev = dev->ieee80211_ptr;
12250 struct wiphy *wiphy = wdev->wiphy;
12251 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12252 const struct ieee80211_mgmt *mgmt = (void *)buf;
12253 u32 cmd;
12254
12255 if (WARN_ON(len < 2))
12256 return;
12257
12258 if (ieee80211_is_deauth(mgmt->frame_control))
12259 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
12260 else
12261 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
12262
12263 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
12264 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
12265 }
12266 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
12267
12268 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
12269 struct net_device *netdev, int cmd,
12270 const u8 *addr, gfp_t gfp)
12271 {
12272 struct sk_buff *msg;
12273 void *hdr;
12274
12275 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12276 if (!msg)
12277 return;
12278
12279 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12280 if (!hdr) {
12281 nlmsg_free(msg);
12282 return;
12283 }
12284
12285 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12286 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12287 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
12288 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12289 goto nla_put_failure;
12290
12291 genlmsg_end(msg, hdr);
12292
12293 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12294 NL80211_MCGRP_MLME, gfp);
12295 return;
12296
12297 nla_put_failure:
12298 genlmsg_cancel(msg, hdr);
12299 nlmsg_free(msg);
12300 }
12301
12302 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
12303 struct net_device *netdev, const u8 *addr,
12304 gfp_t gfp)
12305 {
12306 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
12307 addr, gfp);
12308 }
12309
12310 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
12311 struct net_device *netdev, const u8 *addr,
12312 gfp_t gfp)
12313 {
12314 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
12315 addr, gfp);
12316 }
12317
12318 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
12319 struct net_device *netdev, const u8 *bssid,
12320 const u8 *req_ie, size_t req_ie_len,
12321 const u8 *resp_ie, size_t resp_ie_len,
12322 int status, gfp_t gfp)
12323 {
12324 struct sk_buff *msg;
12325 void *hdr;
12326
12327 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12328 if (!msg)
12329 return;
12330
12331 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
12332 if (!hdr) {
12333 nlmsg_free(msg);
12334 return;
12335 }
12336
12337 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12338 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12339 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
12340 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
12341 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
12342 status) ||
12343 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
12344 (req_ie &&
12345 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12346 (resp_ie &&
12347 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12348 goto nla_put_failure;
12349
12350 genlmsg_end(msg, hdr);
12351
12352 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12353 NL80211_MCGRP_MLME, gfp);
12354 return;
12355
12356 nla_put_failure:
12357 genlmsg_cancel(msg, hdr);
12358 nlmsg_free(msg);
12359 }
12360
12361 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
12362 struct net_device *netdev, const u8 *bssid,
12363 const u8 *req_ie, size_t req_ie_len,
12364 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
12365 {
12366 struct sk_buff *msg;
12367 void *hdr;
12368
12369 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12370 if (!msg)
12371 return;
12372
12373 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
12374 if (!hdr) {
12375 nlmsg_free(msg);
12376 return;
12377 }
12378
12379 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12380 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12381 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
12382 (req_ie &&
12383 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12384 (resp_ie &&
12385 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12386 goto nla_put_failure;
12387
12388 genlmsg_end(msg, hdr);
12389
12390 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12391 NL80211_MCGRP_MLME, gfp);
12392 return;
12393
12394 nla_put_failure:
12395 genlmsg_cancel(msg, hdr);
12396 nlmsg_free(msg);
12397 }
12398
12399 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
12400 struct net_device *netdev, u16 reason,
12401 const u8 *ie, size_t ie_len, bool from_ap)
12402 {
12403 struct sk_buff *msg;
12404 void *hdr;
12405
12406 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12407 if (!msg)
12408 return;
12409
12410 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
12411 if (!hdr) {
12412 nlmsg_free(msg);
12413 return;
12414 }
12415
12416 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12417 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12418 (from_ap && reason &&
12419 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
12420 (from_ap &&
12421 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
12422 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
12423 goto nla_put_failure;
12424
12425 genlmsg_end(msg, hdr);
12426
12427 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12428 NL80211_MCGRP_MLME, GFP_KERNEL);
12429 return;
12430
12431 nla_put_failure:
12432 genlmsg_cancel(msg, hdr);
12433 nlmsg_free(msg);
12434 }
12435
12436 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
12437 struct net_device *netdev, const u8 *bssid,
12438 gfp_t gfp)
12439 {
12440 struct sk_buff *msg;
12441 void *hdr;
12442
12443 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12444 if (!msg)
12445 return;
12446
12447 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
12448 if (!hdr) {
12449 nlmsg_free(msg);
12450 return;
12451 }
12452
12453 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12454 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12455 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12456 goto nla_put_failure;
12457
12458 genlmsg_end(msg, hdr);
12459
12460 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12461 NL80211_MCGRP_MLME, gfp);
12462 return;
12463
12464 nla_put_failure:
12465 genlmsg_cancel(msg, hdr);
12466 nlmsg_free(msg);
12467 }
12468
12469 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12470 const u8* ie, u8 ie_len, gfp_t gfp)
12471 {
12472 struct wireless_dev *wdev = dev->ieee80211_ptr;
12473 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12474 struct sk_buff *msg;
12475 void *hdr;
12476
12477 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12478 return;
12479
12480 trace_cfg80211_notify_new_peer_candidate(dev, addr);
12481
12482 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12483 if (!msg)
12484 return;
12485
12486 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12487 if (!hdr) {
12488 nlmsg_free(msg);
12489 return;
12490 }
12491
12492 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12493 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12494 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12495 (ie_len && ie &&
12496 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12497 goto nla_put_failure;
12498
12499 genlmsg_end(msg, hdr);
12500
12501 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12502 NL80211_MCGRP_MLME, gfp);
12503 return;
12504
12505 nla_put_failure:
12506 genlmsg_cancel(msg, hdr);
12507 nlmsg_free(msg);
12508 }
12509 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12510
12511 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12512 struct net_device *netdev, const u8 *addr,
12513 enum nl80211_key_type key_type, int key_id,
12514 const u8 *tsc, gfp_t gfp)
12515 {
12516 struct sk_buff *msg;
12517 void *hdr;
12518
12519 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12520 if (!msg)
12521 return;
12522
12523 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12524 if (!hdr) {
12525 nlmsg_free(msg);
12526 return;
12527 }
12528
12529 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12530 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12531 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12532 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12533 (key_id != -1 &&
12534 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12535 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
12536 goto nla_put_failure;
12537
12538 genlmsg_end(msg, hdr);
12539
12540 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12541 NL80211_MCGRP_MLME, gfp);
12542 return;
12543
12544 nla_put_failure:
12545 genlmsg_cancel(msg, hdr);
12546 nlmsg_free(msg);
12547 }
12548
12549 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12550 struct ieee80211_channel *channel_before,
12551 struct ieee80211_channel *channel_after)
12552 {
12553 struct sk_buff *msg;
12554 void *hdr;
12555 struct nlattr *nl_freq;
12556
12557 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12558 if (!msg)
12559 return;
12560
12561 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12562 if (!hdr) {
12563 nlmsg_free(msg);
12564 return;
12565 }
12566
12567 /*
12568 * Since we are applying the beacon hint to a wiphy we know its
12569 * wiphy_idx is valid
12570 */
12571 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12572 goto nla_put_failure;
12573
12574 /* Before */
12575 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12576 if (!nl_freq)
12577 goto nla_put_failure;
12578 if (nl80211_msg_put_channel(msg, channel_before, false))
12579 goto nla_put_failure;
12580 nla_nest_end(msg, nl_freq);
12581
12582 /* After */
12583 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12584 if (!nl_freq)
12585 goto nla_put_failure;
12586 if (nl80211_msg_put_channel(msg, channel_after, false))
12587 goto nla_put_failure;
12588 nla_nest_end(msg, nl_freq);
12589
12590 genlmsg_end(msg, hdr);
12591
12592 rcu_read_lock();
12593 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12594 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12595 rcu_read_unlock();
12596
12597 return;
12598
12599 nla_put_failure:
12600 genlmsg_cancel(msg, hdr);
12601 nlmsg_free(msg);
12602 }
12603
12604 static void nl80211_send_remain_on_chan_event(
12605 int cmd, struct cfg80211_registered_device *rdev,
12606 struct wireless_dev *wdev, u64 cookie,
12607 struct ieee80211_channel *chan,
12608 unsigned int duration, gfp_t gfp)
12609 {
12610 struct sk_buff *msg;
12611 void *hdr;
12612
12613 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12614 if (!msg)
12615 return;
12616
12617 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12618 if (!hdr) {
12619 nlmsg_free(msg);
12620 return;
12621 }
12622
12623 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12624 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12625 wdev->netdev->ifindex)) ||
12626 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12627 NL80211_ATTR_PAD) ||
12628 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12629 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12630 NL80211_CHAN_NO_HT) ||
12631 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12632 NL80211_ATTR_PAD))
12633 goto nla_put_failure;
12634
12635 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12636 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12637 goto nla_put_failure;
12638
12639 genlmsg_end(msg, hdr);
12640
12641 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12642 NL80211_MCGRP_MLME, gfp);
12643 return;
12644
12645 nla_put_failure:
12646 genlmsg_cancel(msg, hdr);
12647 nlmsg_free(msg);
12648 }
12649
12650 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12651 struct ieee80211_channel *chan,
12652 unsigned int duration, gfp_t gfp)
12653 {
12654 struct wiphy *wiphy = wdev->wiphy;
12655 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12656
12657 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12658 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12659 rdev, wdev, cookie, chan,
12660 duration, gfp);
12661 }
12662 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12663
12664 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12665 struct ieee80211_channel *chan,
12666 gfp_t gfp)
12667 {
12668 struct wiphy *wiphy = wdev->wiphy;
12669 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12670
12671 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12672 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12673 rdev, wdev, cookie, chan, 0, gfp);
12674 }
12675 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12676
12677 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12678 struct station_info *sinfo, gfp_t gfp)
12679 {
12680 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12681 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12682 struct sk_buff *msg;
12683
12684 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12685
12686 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12687 if (!msg)
12688 return;
12689
12690 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12691 rdev, dev, mac_addr, sinfo) < 0) {
12692 nlmsg_free(msg);
12693 return;
12694 }
12695
12696 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12697 NL80211_MCGRP_MLME, gfp);
12698 }
12699 EXPORT_SYMBOL(cfg80211_new_sta);
12700
12701 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12702 struct station_info *sinfo, gfp_t gfp)
12703 {
12704 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12705 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12706 struct sk_buff *msg;
12707 struct station_info empty_sinfo = {};
12708
12709 if (!sinfo)
12710 sinfo = &empty_sinfo;
12711
12712 trace_cfg80211_del_sta(dev, mac_addr);
12713
12714 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12715 if (!msg)
12716 return;
12717
12718 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12719 rdev, dev, mac_addr, sinfo) < 0) {
12720 nlmsg_free(msg);
12721 return;
12722 }
12723
12724 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12725 NL80211_MCGRP_MLME, gfp);
12726 }
12727 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12728
12729 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12730 enum nl80211_connect_failed_reason reason,
12731 gfp_t gfp)
12732 {
12733 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12734 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12735 struct sk_buff *msg;
12736 void *hdr;
12737
12738 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12739 if (!msg)
12740 return;
12741
12742 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12743 if (!hdr) {
12744 nlmsg_free(msg);
12745 return;
12746 }
12747
12748 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12749 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12750 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12751 goto nla_put_failure;
12752
12753 genlmsg_end(msg, hdr);
12754
12755 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12756 NL80211_MCGRP_MLME, gfp);
12757 return;
12758
12759 nla_put_failure:
12760 genlmsg_cancel(msg, hdr);
12761 nlmsg_free(msg);
12762 }
12763 EXPORT_SYMBOL(cfg80211_conn_failed);
12764
12765 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12766 const u8 *addr, gfp_t gfp)
12767 {
12768 struct wireless_dev *wdev = dev->ieee80211_ptr;
12769 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12770 struct sk_buff *msg;
12771 void *hdr;
12772 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12773
12774 if (!nlportid)
12775 return false;
12776
12777 msg = nlmsg_new(100, gfp);
12778 if (!msg)
12779 return true;
12780
12781 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12782 if (!hdr) {
12783 nlmsg_free(msg);
12784 return true;
12785 }
12786
12787 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12788 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12789 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12790 goto nla_put_failure;
12791
12792 genlmsg_end(msg, hdr);
12793 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12794 return true;
12795
12796 nla_put_failure:
12797 genlmsg_cancel(msg, hdr);
12798 nlmsg_free(msg);
12799 return true;
12800 }
12801
12802 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12803 const u8 *addr, gfp_t gfp)
12804 {
12805 struct wireless_dev *wdev = dev->ieee80211_ptr;
12806 bool ret;
12807
12808 trace_cfg80211_rx_spurious_frame(dev, addr);
12809
12810 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12811 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12812 trace_cfg80211_return_bool(false);
12813 return false;
12814 }
12815 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12816 addr, gfp);
12817 trace_cfg80211_return_bool(ret);
12818 return ret;
12819 }
12820 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12821
12822 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12823 const u8 *addr, gfp_t gfp)
12824 {
12825 struct wireless_dev *wdev = dev->ieee80211_ptr;
12826 bool ret;
12827
12828 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12829
12830 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12831 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12832 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12833 trace_cfg80211_return_bool(false);
12834 return false;
12835 }
12836 ret = __nl80211_unexpected_frame(dev,
12837 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12838 addr, gfp);
12839 trace_cfg80211_return_bool(ret);
12840 return ret;
12841 }
12842 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12843
12844 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12845 struct wireless_dev *wdev, u32 nlportid,
12846 int freq, int sig_dbm,
12847 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12848 {
12849 struct net_device *netdev = wdev->netdev;
12850 struct sk_buff *msg;
12851 void *hdr;
12852
12853 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12854 if (!msg)
12855 return -ENOMEM;
12856
12857 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12858 if (!hdr) {
12859 nlmsg_free(msg);
12860 return -ENOMEM;
12861 }
12862
12863 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12864 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12865 netdev->ifindex)) ||
12866 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12867 NL80211_ATTR_PAD) ||
12868 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12869 (sig_dbm &&
12870 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12871 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12872 (flags &&
12873 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12874 goto nla_put_failure;
12875
12876 genlmsg_end(msg, hdr);
12877
12878 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12879
12880 nla_put_failure:
12881 genlmsg_cancel(msg, hdr);
12882 nlmsg_free(msg);
12883 return -ENOBUFS;
12884 }
12885
12886 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12887 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12888 {
12889 struct wiphy *wiphy = wdev->wiphy;
12890 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12891 struct net_device *netdev = wdev->netdev;
12892 struct sk_buff *msg;
12893 void *hdr;
12894
12895 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12896
12897 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12898 if (!msg)
12899 return;
12900
12901 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12902 if (!hdr) {
12903 nlmsg_free(msg);
12904 return;
12905 }
12906
12907 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12908 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12909 netdev->ifindex)) ||
12910 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12911 NL80211_ATTR_PAD) ||
12912 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12913 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12914 NL80211_ATTR_PAD) ||
12915 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12916 goto nla_put_failure;
12917
12918 genlmsg_end(msg, hdr);
12919
12920 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12921 NL80211_MCGRP_MLME, gfp);
12922 return;
12923
12924 nla_put_failure:
12925 genlmsg_cancel(msg, hdr);
12926 nlmsg_free(msg);
12927 }
12928 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12929
12930 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12931 const char *mac, gfp_t gfp)
12932 {
12933 struct wireless_dev *wdev = dev->ieee80211_ptr;
12934 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12935 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12936 void **cb;
12937
12938 if (!msg)
12939 return NULL;
12940
12941 cb = (void **)msg->cb;
12942
12943 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12944 if (!cb[0]) {
12945 nlmsg_free(msg);
12946 return NULL;
12947 }
12948
12949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12951 goto nla_put_failure;
12952
12953 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12954 goto nla_put_failure;
12955
12956 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12957 if (!cb[1])
12958 goto nla_put_failure;
12959
12960 cb[2] = rdev;
12961
12962 return msg;
12963 nla_put_failure:
12964 nlmsg_free(msg);
12965 return NULL;
12966 }
12967
12968 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12969 {
12970 void **cb = (void **)msg->cb;
12971 struct cfg80211_registered_device *rdev = cb[2];
12972
12973 nla_nest_end(msg, cb[1]);
12974 genlmsg_end(msg, cb[0]);
12975
12976 memset(msg->cb, 0, sizeof(msg->cb));
12977
12978 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12979 NL80211_MCGRP_MLME, gfp);
12980 }
12981
12982 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12983 enum nl80211_cqm_rssi_threshold_event rssi_event,
12984 gfp_t gfp)
12985 {
12986 struct sk_buff *msg;
12987
12988 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12989
12990 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12991 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12992 return;
12993
12994 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12995 if (!msg)
12996 return;
12997
12998 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12999 rssi_event))
13000 goto nla_put_failure;
13001
13002 cfg80211_send_cqm(msg, gfp);
13003
13004 return;
13005
13006 nla_put_failure:
13007 nlmsg_free(msg);
13008 }
13009 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13010
13011 void cfg80211_cqm_txe_notify(struct net_device *dev,
13012 const u8 *peer, u32 num_packets,
13013 u32 rate, u32 intvl, gfp_t gfp)
13014 {
13015 struct sk_buff *msg;
13016
13017 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13018 if (!msg)
13019 return;
13020
13021 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13022 goto nla_put_failure;
13023
13024 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13025 goto nla_put_failure;
13026
13027 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13028 goto nla_put_failure;
13029
13030 cfg80211_send_cqm(msg, gfp);
13031 return;
13032
13033 nla_put_failure:
13034 nlmsg_free(msg);
13035 }
13036 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13037
13038 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13039 const u8 *peer, u32 num_packets, gfp_t gfp)
13040 {
13041 struct sk_buff *msg;
13042
13043 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13044
13045 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13046 if (!msg)
13047 return;
13048
13049 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13050 goto nla_put_failure;
13051
13052 cfg80211_send_cqm(msg, gfp);
13053 return;
13054
13055 nla_put_failure:
13056 nlmsg_free(msg);
13057 }
13058 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13059
13060 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13061 {
13062 struct sk_buff *msg;
13063
13064 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13065 if (!msg)
13066 return;
13067
13068 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13069 goto nla_put_failure;
13070
13071 cfg80211_send_cqm(msg, gfp);
13072 return;
13073
13074 nla_put_failure:
13075 nlmsg_free(msg);
13076 }
13077 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13078
13079 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13080 struct net_device *netdev, const u8 *bssid,
13081 const u8 *replay_ctr, gfp_t gfp)
13082 {
13083 struct sk_buff *msg;
13084 struct nlattr *rekey_attr;
13085 void *hdr;
13086
13087 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13088 if (!msg)
13089 return;
13090
13091 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13092 if (!hdr) {
13093 nlmsg_free(msg);
13094 return;
13095 }
13096
13097 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13098 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13099 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13100 goto nla_put_failure;
13101
13102 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13103 if (!rekey_attr)
13104 goto nla_put_failure;
13105
13106 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13107 NL80211_REPLAY_CTR_LEN, replay_ctr))
13108 goto nla_put_failure;
13109
13110 nla_nest_end(msg, rekey_attr);
13111
13112 genlmsg_end(msg, hdr);
13113
13114 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13115 NL80211_MCGRP_MLME, gfp);
13116 return;
13117
13118 nla_put_failure:
13119 genlmsg_cancel(msg, hdr);
13120 nlmsg_free(msg);
13121 }
13122
13123 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13124 const u8 *replay_ctr, gfp_t gfp)
13125 {
13126 struct wireless_dev *wdev = dev->ieee80211_ptr;
13127 struct wiphy *wiphy = wdev->wiphy;
13128 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13129
13130 trace_cfg80211_gtk_rekey_notify(dev, bssid);
13131 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
13132 }
13133 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
13134
13135 static void
13136 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
13137 struct net_device *netdev, int index,
13138 const u8 *bssid, bool preauth, gfp_t gfp)
13139 {
13140 struct sk_buff *msg;
13141 struct nlattr *attr;
13142 void *hdr;
13143
13144 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13145 if (!msg)
13146 return;
13147
13148 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
13149 if (!hdr) {
13150 nlmsg_free(msg);
13151 return;
13152 }
13153
13154 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13155 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13156 goto nla_put_failure;
13157
13158 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
13159 if (!attr)
13160 goto nla_put_failure;
13161
13162 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
13163 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
13164 (preauth &&
13165 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
13166 goto nla_put_failure;
13167
13168 nla_nest_end(msg, attr);
13169
13170 genlmsg_end(msg, hdr);
13171
13172 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13173 NL80211_MCGRP_MLME, gfp);
13174 return;
13175
13176 nla_put_failure:
13177 genlmsg_cancel(msg, hdr);
13178 nlmsg_free(msg);
13179 }
13180
13181 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
13182 const u8 *bssid, bool preauth, gfp_t gfp)
13183 {
13184 struct wireless_dev *wdev = dev->ieee80211_ptr;
13185 struct wiphy *wiphy = wdev->wiphy;
13186 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13187
13188 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
13189 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
13190 }
13191 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
13192
13193 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
13194 struct net_device *netdev,
13195 struct cfg80211_chan_def *chandef,
13196 gfp_t gfp,
13197 enum nl80211_commands notif,
13198 u8 count)
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, notif);
13208 if (!hdr) {
13209 nlmsg_free(msg);
13210 return;
13211 }
13212
13213 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13214 goto nla_put_failure;
13215
13216 if (nl80211_send_chandef(msg, chandef))
13217 goto nla_put_failure;
13218
13219 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
13220 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
13221 goto nla_put_failure;
13222
13223 genlmsg_end(msg, hdr);
13224
13225 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13226 NL80211_MCGRP_MLME, gfp);
13227 return;
13228
13229 nla_put_failure:
13230 genlmsg_cancel(msg, hdr);
13231 nlmsg_free(msg);
13232 }
13233
13234 void cfg80211_ch_switch_notify(struct net_device *dev,
13235 struct cfg80211_chan_def *chandef)
13236 {
13237 struct wireless_dev *wdev = dev->ieee80211_ptr;
13238 struct wiphy *wiphy = wdev->wiphy;
13239 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13240
13241 ASSERT_WDEV_LOCK(wdev);
13242
13243 trace_cfg80211_ch_switch_notify(dev, chandef);
13244
13245 wdev->chandef = *chandef;
13246 wdev->preset_chandef = *chandef;
13247 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13248 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
13249 }
13250 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
13251
13252 void cfg80211_ch_switch_started_notify(struct net_device *dev,
13253 struct cfg80211_chan_def *chandef,
13254 u8 count)
13255 {
13256 struct wireless_dev *wdev = dev->ieee80211_ptr;
13257 struct wiphy *wiphy = wdev->wiphy;
13258 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13259
13260 trace_cfg80211_ch_switch_started_notify(dev, chandef);
13261
13262 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13263 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
13264 }
13265 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
13266
13267 void
13268 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
13269 const struct cfg80211_chan_def *chandef,
13270 enum nl80211_radar_event event,
13271 struct net_device *netdev, gfp_t gfp)
13272 {
13273 struct sk_buff *msg;
13274 void *hdr;
13275
13276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13277 if (!msg)
13278 return;
13279
13280 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
13281 if (!hdr) {
13282 nlmsg_free(msg);
13283 return;
13284 }
13285
13286 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
13287 goto nla_put_failure;
13288
13289 /* NOP and radar events don't need a netdev parameter */
13290 if (netdev) {
13291 struct wireless_dev *wdev = netdev->ieee80211_ptr;
13292
13293 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13294 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13295 NL80211_ATTR_PAD))
13296 goto nla_put_failure;
13297 }
13298
13299 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
13300 goto nla_put_failure;
13301
13302 if (nl80211_send_chandef(msg, chandef))
13303 goto nla_put_failure;
13304
13305 genlmsg_end(msg, hdr);
13306
13307 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13308 NL80211_MCGRP_MLME, gfp);
13309 return;
13310
13311 nla_put_failure:
13312 genlmsg_cancel(msg, hdr);
13313 nlmsg_free(msg);
13314 }
13315
13316 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
13317 u64 cookie, bool acked, gfp_t gfp)
13318 {
13319 struct wireless_dev *wdev = dev->ieee80211_ptr;
13320 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13321 struct sk_buff *msg;
13322 void *hdr;
13323
13324 trace_cfg80211_probe_status(dev, addr, cookie, acked);
13325
13326 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13327
13328 if (!msg)
13329 return;
13330
13331 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
13332 if (!hdr) {
13333 nlmsg_free(msg);
13334 return;
13335 }
13336
13337 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13338 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13339 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13340 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13341 NL80211_ATTR_PAD) ||
13342 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
13343 goto nla_put_failure;
13344
13345 genlmsg_end(msg, hdr);
13346
13347 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13348 NL80211_MCGRP_MLME, gfp);
13349 return;
13350
13351 nla_put_failure:
13352 genlmsg_cancel(msg, hdr);
13353 nlmsg_free(msg);
13354 }
13355 EXPORT_SYMBOL(cfg80211_probe_status);
13356
13357 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
13358 const u8 *frame, size_t len,
13359 int freq, int sig_dbm)
13360 {
13361 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13362 struct sk_buff *msg;
13363 void *hdr;
13364 struct cfg80211_beacon_registration *reg;
13365
13366 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
13367
13368 spin_lock_bh(&rdev->beacon_registrations_lock);
13369 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13370 msg = nlmsg_new(len + 100, GFP_ATOMIC);
13371 if (!msg) {
13372 spin_unlock_bh(&rdev->beacon_registrations_lock);
13373 return;
13374 }
13375
13376 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13377 if (!hdr)
13378 goto nla_put_failure;
13379
13380 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13381 (freq &&
13382 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
13383 (sig_dbm &&
13384 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13385 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
13386 goto nla_put_failure;
13387
13388 genlmsg_end(msg, hdr);
13389
13390 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
13391 }
13392 spin_unlock_bh(&rdev->beacon_registrations_lock);
13393 return;
13394
13395 nla_put_failure:
13396 spin_unlock_bh(&rdev->beacon_registrations_lock);
13397 if (hdr)
13398 genlmsg_cancel(msg, hdr);
13399 nlmsg_free(msg);
13400 }
13401 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
13402
13403 #ifdef CONFIG_PM
13404 static int cfg80211_net_detect_results(struct sk_buff *msg,
13405 struct cfg80211_wowlan_wakeup *wakeup)
13406 {
13407 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
13408 struct nlattr *nl_results, *nl_match, *nl_freqs;
13409 int i, j;
13410
13411 nl_results = nla_nest_start(
13412 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
13413 if (!nl_results)
13414 return -EMSGSIZE;
13415
13416 for (i = 0; i < nd->n_matches; i++) {
13417 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
13418
13419 nl_match = nla_nest_start(msg, i);
13420 if (!nl_match)
13421 break;
13422
13423 /* The SSID attribute is optional in nl80211, but for
13424 * simplicity reasons it's always present in the
13425 * cfg80211 structure. If a driver can't pass the
13426 * SSID, that needs to be changed. A zero length SSID
13427 * is still a valid SSID (wildcard), so it cannot be
13428 * used for this purpose.
13429 */
13430 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
13431 match->ssid.ssid)) {
13432 nla_nest_cancel(msg, nl_match);
13433 goto out;
13434 }
13435
13436 if (match->n_channels) {
13437 nl_freqs = nla_nest_start(
13438 msg, NL80211_ATTR_SCAN_FREQUENCIES);
13439 if (!nl_freqs) {
13440 nla_nest_cancel(msg, nl_match);
13441 goto out;
13442 }
13443
13444 for (j = 0; j < match->n_channels; j++) {
13445 if (nla_put_u32(msg, j, match->channels[j])) {
13446 nla_nest_cancel(msg, nl_freqs);
13447 nla_nest_cancel(msg, nl_match);
13448 goto out;
13449 }
13450 }
13451
13452 nla_nest_end(msg, nl_freqs);
13453 }
13454
13455 nla_nest_end(msg, nl_match);
13456 }
13457
13458 out:
13459 nla_nest_end(msg, nl_results);
13460 return 0;
13461 }
13462
13463 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13464 struct cfg80211_wowlan_wakeup *wakeup,
13465 gfp_t gfp)
13466 {
13467 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13468 struct sk_buff *msg;
13469 void *hdr;
13470 int size = 200;
13471
13472 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13473
13474 if (wakeup)
13475 size += wakeup->packet_present_len;
13476
13477 msg = nlmsg_new(size, gfp);
13478 if (!msg)
13479 return;
13480
13481 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13482 if (!hdr)
13483 goto free_msg;
13484
13485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13486 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13487 NL80211_ATTR_PAD))
13488 goto free_msg;
13489
13490 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13491 wdev->netdev->ifindex))
13492 goto free_msg;
13493
13494 if (wakeup) {
13495 struct nlattr *reasons;
13496
13497 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13498 if (!reasons)
13499 goto free_msg;
13500
13501 if (wakeup->disconnect &&
13502 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13503 goto free_msg;
13504 if (wakeup->magic_pkt &&
13505 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13506 goto free_msg;
13507 if (wakeup->gtk_rekey_failure &&
13508 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13509 goto free_msg;
13510 if (wakeup->eap_identity_req &&
13511 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13512 goto free_msg;
13513 if (wakeup->four_way_handshake &&
13514 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13515 goto free_msg;
13516 if (wakeup->rfkill_release &&
13517 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13518 goto free_msg;
13519
13520 if (wakeup->pattern_idx >= 0 &&
13521 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13522 wakeup->pattern_idx))
13523 goto free_msg;
13524
13525 if (wakeup->tcp_match &&
13526 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13527 goto free_msg;
13528
13529 if (wakeup->tcp_connlost &&
13530 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13531 goto free_msg;
13532
13533 if (wakeup->tcp_nomoretokens &&
13534 nla_put_flag(msg,
13535 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13536 goto free_msg;
13537
13538 if (wakeup->packet) {
13539 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13540 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13541
13542 if (!wakeup->packet_80211) {
13543 pkt_attr =
13544 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13545 len_attr =
13546 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13547 }
13548
13549 if (wakeup->packet_len &&
13550 nla_put_u32(msg, len_attr, wakeup->packet_len))
13551 goto free_msg;
13552
13553 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13554 wakeup->packet))
13555 goto free_msg;
13556 }
13557
13558 if (wakeup->net_detect &&
13559 cfg80211_net_detect_results(msg, wakeup))
13560 goto free_msg;
13561
13562 nla_nest_end(msg, reasons);
13563 }
13564
13565 genlmsg_end(msg, hdr);
13566
13567 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13568 NL80211_MCGRP_MLME, gfp);
13569 return;
13570
13571 free_msg:
13572 nlmsg_free(msg);
13573 }
13574 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13575 #endif
13576
13577 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13578 enum nl80211_tdls_operation oper,
13579 u16 reason_code, gfp_t gfp)
13580 {
13581 struct wireless_dev *wdev = dev->ieee80211_ptr;
13582 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13583 struct sk_buff *msg;
13584 void *hdr;
13585
13586 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13587 reason_code);
13588
13589 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13590 if (!msg)
13591 return;
13592
13593 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13594 if (!hdr) {
13595 nlmsg_free(msg);
13596 return;
13597 }
13598
13599 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13600 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13601 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13602 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13603 (reason_code > 0 &&
13604 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13605 goto nla_put_failure;
13606
13607 genlmsg_end(msg, hdr);
13608
13609 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13610 NL80211_MCGRP_MLME, gfp);
13611 return;
13612
13613 nla_put_failure:
13614 genlmsg_cancel(msg, hdr);
13615 nlmsg_free(msg);
13616 }
13617 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13618
13619 static int nl80211_netlink_notify(struct notifier_block * nb,
13620 unsigned long state,
13621 void *_notify)
13622 {
13623 struct netlink_notify *notify = _notify;
13624 struct cfg80211_registered_device *rdev;
13625 struct wireless_dev *wdev;
13626 struct cfg80211_beacon_registration *reg, *tmp;
13627
13628 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
13629 return NOTIFY_DONE;
13630
13631 rcu_read_lock();
13632
13633 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13634 bool schedule_destroy_work = false;
13635 bool schedule_scan_stop = false;
13636 struct cfg80211_sched_scan_request *sched_scan_req =
13637 rcu_dereference(rdev->sched_scan_req);
13638
13639 if (sched_scan_req && notify->portid &&
13640 sched_scan_req->owner_nlportid == notify->portid)
13641 schedule_scan_stop = true;
13642
13643 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
13644 cfg80211_mlme_unregister_socket(wdev, notify->portid);
13645
13646 if (wdev->owner_nlportid == notify->portid)
13647 schedule_destroy_work = true;
13648 }
13649
13650 spin_lock_bh(&rdev->beacon_registrations_lock);
13651 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13652 list) {
13653 if (reg->nlportid == notify->portid) {
13654 list_del(&reg->list);
13655 kfree(reg);
13656 break;
13657 }
13658 }
13659 spin_unlock_bh(&rdev->beacon_registrations_lock);
13660
13661 if (schedule_destroy_work) {
13662 struct cfg80211_iface_destroy *destroy;
13663
13664 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13665 if (destroy) {
13666 destroy->nlportid = notify->portid;
13667 spin_lock(&rdev->destroy_list_lock);
13668 list_add(&destroy->list, &rdev->destroy_list);
13669 spin_unlock(&rdev->destroy_list_lock);
13670 schedule_work(&rdev->destroy_work);
13671 }
13672 } else if (schedule_scan_stop) {
13673 sched_scan_req->owner_nlportid = 0;
13674
13675 if (rdev->ops->sched_scan_stop &&
13676 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13677 schedule_work(&rdev->sched_scan_stop_wk);
13678 }
13679 }
13680
13681 rcu_read_unlock();
13682
13683 /*
13684 * It is possible that the user space process that is controlling the
13685 * indoor setting disappeared, so notify the regulatory core.
13686 */
13687 regulatory_netlink_notify(notify->portid);
13688 return NOTIFY_OK;
13689 }
13690
13691 static struct notifier_block nl80211_netlink_notifier = {
13692 .notifier_call = nl80211_netlink_notify,
13693 };
13694
13695 void cfg80211_ft_event(struct net_device *netdev,
13696 struct cfg80211_ft_event_params *ft_event)
13697 {
13698 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13699 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13700 struct sk_buff *msg;
13701 void *hdr;
13702
13703 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13704
13705 if (!ft_event->target_ap)
13706 return;
13707
13708 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13709 if (!msg)
13710 return;
13711
13712 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13713 if (!hdr)
13714 goto out;
13715
13716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13717 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13718 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13719 goto out;
13720
13721 if (ft_event->ies &&
13722 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13723 goto out;
13724 if (ft_event->ric_ies &&
13725 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13726 ft_event->ric_ies))
13727 goto out;
13728
13729 genlmsg_end(msg, hdr);
13730
13731 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13732 NL80211_MCGRP_MLME, GFP_KERNEL);
13733 return;
13734 out:
13735 nlmsg_free(msg);
13736 }
13737 EXPORT_SYMBOL(cfg80211_ft_event);
13738
13739 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13740 {
13741 struct cfg80211_registered_device *rdev;
13742 struct sk_buff *msg;
13743 void *hdr;
13744 u32 nlportid;
13745
13746 rdev = wiphy_to_rdev(wdev->wiphy);
13747 if (!rdev->crit_proto_nlportid)
13748 return;
13749
13750 nlportid = rdev->crit_proto_nlportid;
13751 rdev->crit_proto_nlportid = 0;
13752
13753 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13754 if (!msg)
13755 return;
13756
13757 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13758 if (!hdr)
13759 goto nla_put_failure;
13760
13761 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13762 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13763 NL80211_ATTR_PAD))
13764 goto nla_put_failure;
13765
13766 genlmsg_end(msg, hdr);
13767
13768 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13769 return;
13770
13771 nla_put_failure:
13772 if (hdr)
13773 genlmsg_cancel(msg, hdr);
13774 nlmsg_free(msg);
13775 }
13776 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13777
13778 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13779 {
13780 struct wiphy *wiphy = wdev->wiphy;
13781 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13782 struct sk_buff *msg;
13783 void *hdr;
13784
13785 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13786 if (!msg)
13787 return;
13788
13789 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13790 if (!hdr)
13791 goto out;
13792
13793 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13794 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13795 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13796 NL80211_ATTR_PAD))
13797 goto out;
13798
13799 genlmsg_end(msg, hdr);
13800
13801 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13802 NL80211_MCGRP_MLME, GFP_KERNEL);
13803 return;
13804 out:
13805 nlmsg_free(msg);
13806 }
13807
13808 /* initialisation/exit functions */
13809
13810 int nl80211_init(void)
13811 {
13812 int err;
13813
13814 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13815 nl80211_mcgrps);
13816 if (err)
13817 return err;
13818
13819 err = netlink_register_notifier(&nl80211_netlink_notifier);
13820 if (err)
13821 goto err_out;
13822
13823 return 0;
13824 err_out:
13825 genl_unregister_family(&nl80211_fam);
13826 return err;
13827 }
13828
13829 void nl80211_exit(void)
13830 {
13831 netlink_unregister_notifier(&nl80211_netlink_notifier);
13832 genl_unregister_family(&nl80211_fam);
13833 }
Linux kernel - Deliverables
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