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Merge branch 'net_next_ovs' of git://git.kernel.org/pub/scm/linux/kernel/git/pshelar...
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = "config", },
63 [NL80211_MCGRP_SCAN] = { .name = "scan", },
64 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
65 [NL80211_MCGRP_MLME] = { .name = "mlme", },
66 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 };
399
400 /* policy for the key attributes */
401 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
402 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
403 [NL80211_KEY_IDX] = { .type = NLA_U8 },
404 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
405 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
406 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
407 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
408 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
409 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
410 };
411
412 /* policy for the key default flags */
413 static const struct nla_policy
414 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
415 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
416 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
417 };
418
419 /* policy for WoWLAN attributes */
420 static const struct nla_policy
421 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
422 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
423 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
424 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
426 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
431 };
432
433 static const struct nla_policy
434 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
435 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
436 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
437 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
438 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
439 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
440 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
441 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
442 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
443 },
444 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
445 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
446 },
447 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
448 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
449 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
450 };
451
452 /* policy for coalesce rule attributes */
453 static const struct nla_policy
454 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
455 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
456 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
457 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
458 };
459
460 /* policy for GTK rekey offload attributes */
461 static const struct nla_policy
462 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
463 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
464 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
465 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
466 };
467
468 static const struct nla_policy
469 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
470 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
471 .len = IEEE80211_MAX_SSID_LEN },
472 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
473 };
474
475 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
476 struct netlink_callback *cb,
477 struct cfg80211_registered_device **rdev,
478 struct wireless_dev **wdev)
479 {
480 int err;
481
482 rtnl_lock();
483
484 if (!cb->args[0]) {
485 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
486 nl80211_fam.attrbuf, nl80211_fam.maxattr,
487 nl80211_policy);
488 if (err)
489 goto out_unlock;
490
491 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
492 nl80211_fam.attrbuf);
493 if (IS_ERR(*wdev)) {
494 err = PTR_ERR(*wdev);
495 goto out_unlock;
496 }
497 *rdev = wiphy_to_rdev((*wdev)->wiphy);
498 /* 0 is the first index - add 1 to parse only once */
499 cb->args[0] = (*rdev)->wiphy_idx + 1;
500 cb->args[1] = (*wdev)->identifier;
501 } else {
502 /* subtract the 1 again here */
503 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
504 struct wireless_dev *tmp;
505
506 if (!wiphy) {
507 err = -ENODEV;
508 goto out_unlock;
509 }
510 *rdev = wiphy_to_rdev(wiphy);
511 *wdev = NULL;
512
513 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
514 if (tmp->identifier == cb->args[1]) {
515 *wdev = tmp;
516 break;
517 }
518 }
519
520 if (!*wdev) {
521 err = -ENODEV;
522 goto out_unlock;
523 }
524 }
525
526 return 0;
527 out_unlock:
528 rtnl_unlock();
529 return err;
530 }
531
532 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
533 {
534 rtnl_unlock();
535 }
536
537 /* IE validation */
538 static bool is_valid_ie_attr(const struct nlattr *attr)
539 {
540 const u8 *pos;
541 int len;
542
543 if (!attr)
544 return true;
545
546 pos = nla_data(attr);
547 len = nla_len(attr);
548
549 while (len) {
550 u8 elemlen;
551
552 if (len < 2)
553 return false;
554 len -= 2;
555
556 elemlen = pos[1];
557 if (elemlen > len)
558 return false;
559
560 len -= elemlen;
561 pos += 2 + elemlen;
562 }
563
564 return true;
565 }
566
567 /* message building helper */
568 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
569 int flags, u8 cmd)
570 {
571 /* since there is no private header just add the generic one */
572 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
573 }
574
575 static int nl80211_msg_put_channel(struct sk_buff *msg,
576 struct ieee80211_channel *chan,
577 bool large)
578 {
579 /* Some channels must be completely excluded from the
580 * list to protect old user-space tools from breaking
581 */
582 if (!large && chan->flags &
583 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
584 return 0;
585
586 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
587 chan->center_freq))
588 goto nla_put_failure;
589
590 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
591 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
592 goto nla_put_failure;
593 if (chan->flags & IEEE80211_CHAN_NO_IR) {
594 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
595 goto nla_put_failure;
596 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
597 goto nla_put_failure;
598 }
599 if (chan->flags & IEEE80211_CHAN_RADAR) {
600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
601 goto nla_put_failure;
602 if (large) {
603 u32 time;
604
605 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
606
607 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
608 chan->dfs_state))
609 goto nla_put_failure;
610 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
611 time))
612 goto nla_put_failure;
613 if (nla_put_u32(msg,
614 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
615 chan->dfs_cac_ms))
616 goto nla_put_failure;
617 }
618 }
619
620 if (large) {
621 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
622 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
623 goto nla_put_failure;
624 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
625 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
626 goto nla_put_failure;
627 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
644 goto nla_put_failure;
645 }
646
647 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
648 DBM_TO_MBM(chan->max_power)))
649 goto nla_put_failure;
650
651 return 0;
652
653 nla_put_failure:
654 return -ENOBUFS;
655 }
656
657 /* netlink command implementations */
658
659 struct key_parse {
660 struct key_params p;
661 int idx;
662 int type;
663 bool def, defmgmt;
664 bool def_uni, def_multi;
665 };
666
667 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
668 {
669 struct nlattr *tb[NL80211_KEY_MAX + 1];
670 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
671 nl80211_key_policy);
672 if (err)
673 return err;
674
675 k->def = !!tb[NL80211_KEY_DEFAULT];
676 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
677
678 if (k->def) {
679 k->def_uni = true;
680 k->def_multi = true;
681 }
682 if (k->defmgmt)
683 k->def_multi = true;
684
685 if (tb[NL80211_KEY_IDX])
686 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
687
688 if (tb[NL80211_KEY_DATA]) {
689 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
690 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
691 }
692
693 if (tb[NL80211_KEY_SEQ]) {
694 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
695 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
696 }
697
698 if (tb[NL80211_KEY_CIPHER])
699 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
700
701 if (tb[NL80211_KEY_TYPE]) {
702 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
703 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
704 return -EINVAL;
705 }
706
707 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
708 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
709 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
710 tb[NL80211_KEY_DEFAULT_TYPES],
711 nl80211_key_default_policy);
712 if (err)
713 return err;
714
715 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
716 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
717 }
718
719 return 0;
720 }
721
722 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
723 {
724 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
725 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
726 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
727 }
728
729 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
730 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
731 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
732 }
733
734 if (info->attrs[NL80211_ATTR_KEY_IDX])
735 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
736
737 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
738 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
739
740 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
741 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
742
743 if (k->def) {
744 k->def_uni = true;
745 k->def_multi = true;
746 }
747 if (k->defmgmt)
748 k->def_multi = true;
749
750 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
751 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
752 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
753 return -EINVAL;
754 }
755
756 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
757 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
758 int err = nla_parse_nested(
759 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
760 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
761 nl80211_key_default_policy);
762 if (err)
763 return err;
764
765 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
766 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
767 }
768
769 return 0;
770 }
771
772 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
773 {
774 int err;
775
776 memset(k, 0, sizeof(*k));
777 k->idx = -1;
778 k->type = -1;
779
780 if (info->attrs[NL80211_ATTR_KEY])
781 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
782 else
783 err = nl80211_parse_key_old(info, k);
784
785 if (err)
786 return err;
787
788 if (k->def && k->defmgmt)
789 return -EINVAL;
790
791 if (k->defmgmt) {
792 if (k->def_uni || !k->def_multi)
793 return -EINVAL;
794 }
795
796 if (k->idx != -1) {
797 if (k->defmgmt) {
798 if (k->idx < 4 || k->idx > 5)
799 return -EINVAL;
800 } else if (k->def) {
801 if (k->idx < 0 || k->idx > 3)
802 return -EINVAL;
803 } else {
804 if (k->idx < 0 || k->idx > 5)
805 return -EINVAL;
806 }
807 }
808
809 return 0;
810 }
811
812 static struct cfg80211_cached_keys *
813 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
814 struct nlattr *keys, bool *no_ht)
815 {
816 struct key_parse parse;
817 struct nlattr *key;
818 struct cfg80211_cached_keys *result;
819 int rem, err, def = 0;
820
821 result = kzalloc(sizeof(*result), GFP_KERNEL);
822 if (!result)
823 return ERR_PTR(-ENOMEM);
824
825 result->def = -1;
826 result->defmgmt = -1;
827
828 nla_for_each_nested(key, keys, rem) {
829 memset(&parse, 0, sizeof(parse));
830 parse.idx = -1;
831
832 err = nl80211_parse_key_new(key, &parse);
833 if (err)
834 goto error;
835 err = -EINVAL;
836 if (!parse.p.key)
837 goto error;
838 if (parse.idx < 0 || parse.idx > 4)
839 goto error;
840 if (parse.def) {
841 if (def)
842 goto error;
843 def = 1;
844 result->def = parse.idx;
845 if (!parse.def_uni || !parse.def_multi)
846 goto error;
847 } else if (parse.defmgmt)
848 goto error;
849 err = cfg80211_validate_key_settings(rdev, &parse.p,
850 parse.idx, false, NULL);
851 if (err)
852 goto error;
853 result->params[parse.idx].cipher = parse.p.cipher;
854 result->params[parse.idx].key_len = parse.p.key_len;
855 result->params[parse.idx].key = result->data[parse.idx];
856 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
857
858 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
859 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
860 if (no_ht)
861 *no_ht = true;
862 }
863 }
864
865 return result;
866 error:
867 kfree(result);
868 return ERR_PTR(err);
869 }
870
871 static int nl80211_key_allowed(struct wireless_dev *wdev)
872 {
873 ASSERT_WDEV_LOCK(wdev);
874
875 switch (wdev->iftype) {
876 case NL80211_IFTYPE_AP:
877 case NL80211_IFTYPE_AP_VLAN:
878 case NL80211_IFTYPE_P2P_GO:
879 case NL80211_IFTYPE_MESH_POINT:
880 break;
881 case NL80211_IFTYPE_ADHOC:
882 case NL80211_IFTYPE_STATION:
883 case NL80211_IFTYPE_P2P_CLIENT:
884 if (!wdev->current_bss)
885 return -ENOLINK;
886 break;
887 case NL80211_IFTYPE_UNSPECIFIED:
888 case NL80211_IFTYPE_OCB:
889 case NL80211_IFTYPE_MONITOR:
890 case NL80211_IFTYPE_P2P_DEVICE:
891 case NL80211_IFTYPE_WDS:
892 case NUM_NL80211_IFTYPES:
893 return -EINVAL;
894 }
895
896 return 0;
897 }
898
899 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
900 struct nlattr *tb)
901 {
902 struct ieee80211_channel *chan;
903
904 if (tb == NULL)
905 return NULL;
906 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
907 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
908 return NULL;
909 return chan;
910 }
911
912 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
913 {
914 struct nlattr *nl_modes = nla_nest_start(msg, attr);
915 int i;
916
917 if (!nl_modes)
918 goto nla_put_failure;
919
920 i = 0;
921 while (ifmodes) {
922 if ((ifmodes & 1) && nla_put_flag(msg, i))
923 goto nla_put_failure;
924 ifmodes >>= 1;
925 i++;
926 }
927
928 nla_nest_end(msg, nl_modes);
929 return 0;
930
931 nla_put_failure:
932 return -ENOBUFS;
933 }
934
935 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
936 struct sk_buff *msg,
937 bool large)
938 {
939 struct nlattr *nl_combis;
940 int i, j;
941
942 nl_combis = nla_nest_start(msg,
943 NL80211_ATTR_INTERFACE_COMBINATIONS);
944 if (!nl_combis)
945 goto nla_put_failure;
946
947 for (i = 0; i < wiphy->n_iface_combinations; i++) {
948 const struct ieee80211_iface_combination *c;
949 struct nlattr *nl_combi, *nl_limits;
950
951 c = &wiphy->iface_combinations[i];
952
953 nl_combi = nla_nest_start(msg, i + 1);
954 if (!nl_combi)
955 goto nla_put_failure;
956
957 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
958 if (!nl_limits)
959 goto nla_put_failure;
960
961 for (j = 0; j < c->n_limits; j++) {
962 struct nlattr *nl_limit;
963
964 nl_limit = nla_nest_start(msg, j + 1);
965 if (!nl_limit)
966 goto nla_put_failure;
967 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
968 c->limits[j].max))
969 goto nla_put_failure;
970 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
971 c->limits[j].types))
972 goto nla_put_failure;
973 nla_nest_end(msg, nl_limit);
974 }
975
976 nla_nest_end(msg, nl_limits);
977
978 if (c->beacon_int_infra_match &&
979 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
980 goto nla_put_failure;
981 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
982 c->num_different_channels) ||
983 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
984 c->max_interfaces))
985 goto nla_put_failure;
986 if (large &&
987 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
988 c->radar_detect_widths) ||
989 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
990 c->radar_detect_regions)))
991 goto nla_put_failure;
992
993 nla_nest_end(msg, nl_combi);
994 }
995
996 nla_nest_end(msg, nl_combis);
997
998 return 0;
999 nla_put_failure:
1000 return -ENOBUFS;
1001 }
1002
1003 #ifdef CONFIG_PM
1004 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1005 struct sk_buff *msg)
1006 {
1007 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1008 struct nlattr *nl_tcp;
1009
1010 if (!tcp)
1011 return 0;
1012
1013 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1014 if (!nl_tcp)
1015 return -ENOBUFS;
1016
1017 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1018 tcp->data_payload_max))
1019 return -ENOBUFS;
1020
1021 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1022 tcp->data_payload_max))
1023 return -ENOBUFS;
1024
1025 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1026 return -ENOBUFS;
1027
1028 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1029 sizeof(*tcp->tok), tcp->tok))
1030 return -ENOBUFS;
1031
1032 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1033 tcp->data_interval_max))
1034 return -ENOBUFS;
1035
1036 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1037 tcp->wake_payload_max))
1038 return -ENOBUFS;
1039
1040 nla_nest_end(msg, nl_tcp);
1041 return 0;
1042 }
1043
1044 static int nl80211_send_wowlan(struct sk_buff *msg,
1045 struct cfg80211_registered_device *rdev,
1046 bool large)
1047 {
1048 struct nlattr *nl_wowlan;
1049
1050 if (!rdev->wiphy.wowlan)
1051 return 0;
1052
1053 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1054 if (!nl_wowlan)
1055 return -ENOBUFS;
1056
1057 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1058 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1059 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1060 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1061 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1062 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1063 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1064 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1065 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1067 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1068 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1069 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1070 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1071 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1073 return -ENOBUFS;
1074
1075 if (rdev->wiphy.wowlan->n_patterns) {
1076 struct nl80211_pattern_support pat = {
1077 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1078 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1079 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1080 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1081 };
1082
1083 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1084 sizeof(pat), &pat))
1085 return -ENOBUFS;
1086 }
1087
1088 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1089 return -ENOBUFS;
1090
1091 nla_nest_end(msg, nl_wowlan);
1092
1093 return 0;
1094 }
1095 #endif
1096
1097 static int nl80211_send_coalesce(struct sk_buff *msg,
1098 struct cfg80211_registered_device *rdev)
1099 {
1100 struct nl80211_coalesce_rule_support rule;
1101
1102 if (!rdev->wiphy.coalesce)
1103 return 0;
1104
1105 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1106 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1107 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1108 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1109 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1110 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1111
1112 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1113 return -ENOBUFS;
1114
1115 return 0;
1116 }
1117
1118 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1119 struct ieee80211_supported_band *sband)
1120 {
1121 struct nlattr *nl_rates, *nl_rate;
1122 struct ieee80211_rate *rate;
1123 int i;
1124
1125 /* add HT info */
1126 if (sband->ht_cap.ht_supported &&
1127 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1128 sizeof(sband->ht_cap.mcs),
1129 &sband->ht_cap.mcs) ||
1130 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1131 sband->ht_cap.cap) ||
1132 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1133 sband->ht_cap.ampdu_factor) ||
1134 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1135 sband->ht_cap.ampdu_density)))
1136 return -ENOBUFS;
1137
1138 /* add VHT info */
1139 if (sband->vht_cap.vht_supported &&
1140 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1141 sizeof(sband->vht_cap.vht_mcs),
1142 &sband->vht_cap.vht_mcs) ||
1143 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1144 sband->vht_cap.cap)))
1145 return -ENOBUFS;
1146
1147 /* add bitrates */
1148 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1149 if (!nl_rates)
1150 return -ENOBUFS;
1151
1152 for (i = 0; i < sband->n_bitrates; i++) {
1153 nl_rate = nla_nest_start(msg, i);
1154 if (!nl_rate)
1155 return -ENOBUFS;
1156
1157 rate = &sband->bitrates[i];
1158 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1159 rate->bitrate))
1160 return -ENOBUFS;
1161 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1162 nla_put_flag(msg,
1163 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1164 return -ENOBUFS;
1165
1166 nla_nest_end(msg, nl_rate);
1167 }
1168
1169 nla_nest_end(msg, nl_rates);
1170
1171 return 0;
1172 }
1173
1174 static int
1175 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1176 const struct ieee80211_txrx_stypes *mgmt_stypes)
1177 {
1178 u16 stypes;
1179 struct nlattr *nl_ftypes, *nl_ifs;
1180 enum nl80211_iftype ift;
1181 int i;
1182
1183 if (!mgmt_stypes)
1184 return 0;
1185
1186 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1187 if (!nl_ifs)
1188 return -ENOBUFS;
1189
1190 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1191 nl_ftypes = nla_nest_start(msg, ift);
1192 if (!nl_ftypes)
1193 return -ENOBUFS;
1194 i = 0;
1195 stypes = mgmt_stypes[ift].tx;
1196 while (stypes) {
1197 if ((stypes & 1) &&
1198 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1199 (i << 4) | IEEE80211_FTYPE_MGMT))
1200 return -ENOBUFS;
1201 stypes >>= 1;
1202 i++;
1203 }
1204 nla_nest_end(msg, nl_ftypes);
1205 }
1206
1207 nla_nest_end(msg, nl_ifs);
1208
1209 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1210 if (!nl_ifs)
1211 return -ENOBUFS;
1212
1213 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1214 nl_ftypes = nla_nest_start(msg, ift);
1215 if (!nl_ftypes)
1216 return -ENOBUFS;
1217 i = 0;
1218 stypes = mgmt_stypes[ift].rx;
1219 while (stypes) {
1220 if ((stypes & 1) &&
1221 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1222 (i << 4) | IEEE80211_FTYPE_MGMT))
1223 return -ENOBUFS;
1224 stypes >>= 1;
1225 i++;
1226 }
1227 nla_nest_end(msg, nl_ftypes);
1228 }
1229 nla_nest_end(msg, nl_ifs);
1230
1231 return 0;
1232 }
1233
1234 struct nl80211_dump_wiphy_state {
1235 s64 filter_wiphy;
1236 long start;
1237 long split_start, band_start, chan_start;
1238 bool split;
1239 };
1240
1241 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1242 enum nl80211_commands cmd,
1243 struct sk_buff *msg, u32 portid, u32 seq,
1244 int flags, struct nl80211_dump_wiphy_state *state)
1245 {
1246 void *hdr;
1247 struct nlattr *nl_bands, *nl_band;
1248 struct nlattr *nl_freqs, *nl_freq;
1249 struct nlattr *nl_cmds;
1250 enum ieee80211_band band;
1251 struct ieee80211_channel *chan;
1252 int i;
1253 const struct ieee80211_txrx_stypes *mgmt_stypes =
1254 rdev->wiphy.mgmt_stypes;
1255 u32 features;
1256
1257 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1258 if (!hdr)
1259 return -ENOBUFS;
1260
1261 if (WARN_ON(!state))
1262 return -EINVAL;
1263
1264 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1265 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1266 wiphy_name(&rdev->wiphy)) ||
1267 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1268 cfg80211_rdev_list_generation))
1269 goto nla_put_failure;
1270
1271 if (cmd != NL80211_CMD_NEW_WIPHY)
1272 goto finish;
1273
1274 switch (state->split_start) {
1275 case 0:
1276 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1277 rdev->wiphy.retry_short) ||
1278 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1279 rdev->wiphy.retry_long) ||
1280 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1281 rdev->wiphy.frag_threshold) ||
1282 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1283 rdev->wiphy.rts_threshold) ||
1284 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1285 rdev->wiphy.coverage_class) ||
1286 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1287 rdev->wiphy.max_scan_ssids) ||
1288 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1289 rdev->wiphy.max_sched_scan_ssids) ||
1290 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1291 rdev->wiphy.max_scan_ie_len) ||
1292 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1293 rdev->wiphy.max_sched_scan_ie_len) ||
1294 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1295 rdev->wiphy.max_match_sets))
1296 goto nla_put_failure;
1297
1298 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1299 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1300 goto nla_put_failure;
1301 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1302 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1303 goto nla_put_failure;
1304 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1305 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1306 goto nla_put_failure;
1307 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1308 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1309 goto nla_put_failure;
1310 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1311 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1312 goto nla_put_failure;
1313 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1314 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1315 goto nla_put_failure;
1316 state->split_start++;
1317 if (state->split)
1318 break;
1319 case 1:
1320 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1321 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1322 rdev->wiphy.cipher_suites))
1323 goto nla_put_failure;
1324
1325 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1326 rdev->wiphy.max_num_pmkids))
1327 goto nla_put_failure;
1328
1329 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1330 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1331 goto nla_put_failure;
1332
1333 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1334 rdev->wiphy.available_antennas_tx) ||
1335 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1336 rdev->wiphy.available_antennas_rx))
1337 goto nla_put_failure;
1338
1339 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1340 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1341 rdev->wiphy.probe_resp_offload))
1342 goto nla_put_failure;
1343
1344 if ((rdev->wiphy.available_antennas_tx ||
1345 rdev->wiphy.available_antennas_rx) &&
1346 rdev->ops->get_antenna) {
1347 u32 tx_ant = 0, rx_ant = 0;
1348 int res;
1349 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1350 if (!res) {
1351 if (nla_put_u32(msg,
1352 NL80211_ATTR_WIPHY_ANTENNA_TX,
1353 tx_ant) ||
1354 nla_put_u32(msg,
1355 NL80211_ATTR_WIPHY_ANTENNA_RX,
1356 rx_ant))
1357 goto nla_put_failure;
1358 }
1359 }
1360
1361 state->split_start++;
1362 if (state->split)
1363 break;
1364 case 2:
1365 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1366 rdev->wiphy.interface_modes))
1367 goto nla_put_failure;
1368 state->split_start++;
1369 if (state->split)
1370 break;
1371 case 3:
1372 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1373 if (!nl_bands)
1374 goto nla_put_failure;
1375
1376 for (band = state->band_start;
1377 band < IEEE80211_NUM_BANDS; band++) {
1378 struct ieee80211_supported_band *sband;
1379
1380 sband = rdev->wiphy.bands[band];
1381
1382 if (!sband)
1383 continue;
1384
1385 nl_band = nla_nest_start(msg, band);
1386 if (!nl_band)
1387 goto nla_put_failure;
1388
1389 switch (state->chan_start) {
1390 case 0:
1391 if (nl80211_send_band_rateinfo(msg, sband))
1392 goto nla_put_failure;
1393 state->chan_start++;
1394 if (state->split)
1395 break;
1396 default:
1397 /* add frequencies */
1398 nl_freqs = nla_nest_start(
1399 msg, NL80211_BAND_ATTR_FREQS);
1400 if (!nl_freqs)
1401 goto nla_put_failure;
1402
1403 for (i = state->chan_start - 1;
1404 i < sband->n_channels;
1405 i++) {
1406 nl_freq = nla_nest_start(msg, i);
1407 if (!nl_freq)
1408 goto nla_put_failure;
1409
1410 chan = &sband->channels[i];
1411
1412 if (nl80211_msg_put_channel(
1413 msg, chan,
1414 state->split))
1415 goto nla_put_failure;
1416
1417 nla_nest_end(msg, nl_freq);
1418 if (state->split)
1419 break;
1420 }
1421 if (i < sband->n_channels)
1422 state->chan_start = i + 2;
1423 else
1424 state->chan_start = 0;
1425 nla_nest_end(msg, nl_freqs);
1426 }
1427
1428 nla_nest_end(msg, nl_band);
1429
1430 if (state->split) {
1431 /* start again here */
1432 if (state->chan_start)
1433 band--;
1434 break;
1435 }
1436 }
1437 nla_nest_end(msg, nl_bands);
1438
1439 if (band < IEEE80211_NUM_BANDS)
1440 state->band_start = band + 1;
1441 else
1442 state->band_start = 0;
1443
1444 /* if bands & channels are done, continue outside */
1445 if (state->band_start == 0 && state->chan_start == 0)
1446 state->split_start++;
1447 if (state->split)
1448 break;
1449 case 4:
1450 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1451 if (!nl_cmds)
1452 goto nla_put_failure;
1453
1454 i = 0;
1455 #define CMD(op, n) \
1456 do { \
1457 if (rdev->ops->op) { \
1458 i++; \
1459 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1460 goto nla_put_failure; \
1461 } \
1462 } while (0)
1463
1464 CMD(add_virtual_intf, NEW_INTERFACE);
1465 CMD(change_virtual_intf, SET_INTERFACE);
1466 CMD(add_key, NEW_KEY);
1467 CMD(start_ap, START_AP);
1468 CMD(add_station, NEW_STATION);
1469 CMD(add_mpath, NEW_MPATH);
1470 CMD(update_mesh_config, SET_MESH_CONFIG);
1471 CMD(change_bss, SET_BSS);
1472 CMD(auth, AUTHENTICATE);
1473 CMD(assoc, ASSOCIATE);
1474 CMD(deauth, DEAUTHENTICATE);
1475 CMD(disassoc, DISASSOCIATE);
1476 CMD(join_ibss, JOIN_IBSS);
1477 CMD(join_mesh, JOIN_MESH);
1478 CMD(set_pmksa, SET_PMKSA);
1479 CMD(del_pmksa, DEL_PMKSA);
1480 CMD(flush_pmksa, FLUSH_PMKSA);
1481 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1482 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1483 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1484 CMD(mgmt_tx, FRAME);
1485 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1486 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1487 i++;
1488 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1489 goto nla_put_failure;
1490 }
1491 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1492 rdev->ops->join_mesh) {
1493 i++;
1494 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1495 goto nla_put_failure;
1496 }
1497 CMD(set_wds_peer, SET_WDS_PEER);
1498 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1499 CMD(tdls_mgmt, TDLS_MGMT);
1500 CMD(tdls_oper, TDLS_OPER);
1501 }
1502 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1503 CMD(sched_scan_start, START_SCHED_SCAN);
1504 CMD(probe_client, PROBE_CLIENT);
1505 CMD(set_noack_map, SET_NOACK_MAP);
1506 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1507 i++;
1508 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1509 goto nla_put_failure;
1510 }
1511 CMD(start_p2p_device, START_P2P_DEVICE);
1512 CMD(set_mcast_rate, SET_MCAST_RATE);
1513 #ifdef CONFIG_NL80211_TESTMODE
1514 CMD(testmode_cmd, TESTMODE);
1515 #endif
1516 if (state->split) {
1517 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1518 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1519 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1520 CMD(channel_switch, CHANNEL_SWITCH);
1521 CMD(set_qos_map, SET_QOS_MAP);
1522 if (rdev->wiphy.features &
1523 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1524 CMD(add_tx_ts, ADD_TX_TS);
1525 }
1526 /* add into the if now */
1527 #undef CMD
1528
1529 if (rdev->ops->connect || rdev->ops->auth) {
1530 i++;
1531 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1532 goto nla_put_failure;
1533 }
1534
1535 if (rdev->ops->disconnect || rdev->ops->deauth) {
1536 i++;
1537 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1538 goto nla_put_failure;
1539 }
1540
1541 nla_nest_end(msg, nl_cmds);
1542 state->split_start++;
1543 if (state->split)
1544 break;
1545 case 5:
1546 if (rdev->ops->remain_on_channel &&
1547 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1548 nla_put_u32(msg,
1549 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1550 rdev->wiphy.max_remain_on_channel_duration))
1551 goto nla_put_failure;
1552
1553 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1554 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1555 goto nla_put_failure;
1556
1557 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1558 goto nla_put_failure;
1559 state->split_start++;
1560 if (state->split)
1561 break;
1562 case 6:
1563 #ifdef CONFIG_PM
1564 if (nl80211_send_wowlan(msg, rdev, state->split))
1565 goto nla_put_failure;
1566 state->split_start++;
1567 if (state->split)
1568 break;
1569 #else
1570 state->split_start++;
1571 #endif
1572 case 7:
1573 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1574 rdev->wiphy.software_iftypes))
1575 goto nla_put_failure;
1576
1577 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1578 state->split))
1579 goto nla_put_failure;
1580
1581 state->split_start++;
1582 if (state->split)
1583 break;
1584 case 8:
1585 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1586 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1587 rdev->wiphy.ap_sme_capa))
1588 goto nla_put_failure;
1589
1590 features = rdev->wiphy.features;
1591 /*
1592 * We can only add the per-channel limit information if the
1593 * dump is split, otherwise it makes it too big. Therefore
1594 * only advertise it in that case.
1595 */
1596 if (state->split)
1597 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1598 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1599 goto nla_put_failure;
1600
1601 if (rdev->wiphy.ht_capa_mod_mask &&
1602 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1603 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1604 rdev->wiphy.ht_capa_mod_mask))
1605 goto nla_put_failure;
1606
1607 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1608 rdev->wiphy.max_acl_mac_addrs &&
1609 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1610 rdev->wiphy.max_acl_mac_addrs))
1611 goto nla_put_failure;
1612
1613 /*
1614 * Any information below this point is only available to
1615 * applications that can deal with it being split. This
1616 * helps ensure that newly added capabilities don't break
1617 * older tools by overrunning their buffers.
1618 *
1619 * We still increment split_start so that in the split
1620 * case we'll continue with more data in the next round,
1621 * but break unconditionally so unsplit data stops here.
1622 */
1623 state->split_start++;
1624 break;
1625 case 9:
1626 if (rdev->wiphy.extended_capabilities &&
1627 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1628 rdev->wiphy.extended_capabilities_len,
1629 rdev->wiphy.extended_capabilities) ||
1630 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1631 rdev->wiphy.extended_capabilities_len,
1632 rdev->wiphy.extended_capabilities_mask)))
1633 goto nla_put_failure;
1634
1635 if (rdev->wiphy.vht_capa_mod_mask &&
1636 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1637 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1638 rdev->wiphy.vht_capa_mod_mask))
1639 goto nla_put_failure;
1640
1641 state->split_start++;
1642 break;
1643 case 10:
1644 if (nl80211_send_coalesce(msg, rdev))
1645 goto nla_put_failure;
1646
1647 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1648 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1649 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1650 goto nla_put_failure;
1651
1652 if (rdev->wiphy.max_ap_assoc_sta &&
1653 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1654 rdev->wiphy.max_ap_assoc_sta))
1655 goto nla_put_failure;
1656
1657 state->split_start++;
1658 break;
1659 case 11:
1660 if (rdev->wiphy.n_vendor_commands) {
1661 const struct nl80211_vendor_cmd_info *info;
1662 struct nlattr *nested;
1663
1664 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1665 if (!nested)
1666 goto nla_put_failure;
1667
1668 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1669 info = &rdev->wiphy.vendor_commands[i].info;
1670 if (nla_put(msg, i + 1, sizeof(*info), info))
1671 goto nla_put_failure;
1672 }
1673 nla_nest_end(msg, nested);
1674 }
1675
1676 if (rdev->wiphy.n_vendor_events) {
1677 const struct nl80211_vendor_cmd_info *info;
1678 struct nlattr *nested;
1679
1680 nested = nla_nest_start(msg,
1681 NL80211_ATTR_VENDOR_EVENTS);
1682 if (!nested)
1683 goto nla_put_failure;
1684
1685 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1686 info = &rdev->wiphy.vendor_events[i];
1687 if (nla_put(msg, i + 1, sizeof(*info), info))
1688 goto nla_put_failure;
1689 }
1690 nla_nest_end(msg, nested);
1691 }
1692 state->split_start++;
1693 break;
1694 case 12:
1695 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1696 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1697 rdev->wiphy.max_num_csa_counters))
1698 goto nla_put_failure;
1699
1700 /* done */
1701 state->split_start = 0;
1702 break;
1703 }
1704 finish:
1705 return genlmsg_end(msg, hdr);
1706
1707 nla_put_failure:
1708 genlmsg_cancel(msg, hdr);
1709 return -EMSGSIZE;
1710 }
1711
1712 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1713 struct netlink_callback *cb,
1714 struct nl80211_dump_wiphy_state *state)
1715 {
1716 struct nlattr **tb = nl80211_fam.attrbuf;
1717 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1718 tb, nl80211_fam.maxattr, nl80211_policy);
1719 /* ignore parse errors for backward compatibility */
1720 if (ret)
1721 return 0;
1722
1723 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1724 if (tb[NL80211_ATTR_WIPHY])
1725 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1726 if (tb[NL80211_ATTR_WDEV])
1727 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1728 if (tb[NL80211_ATTR_IFINDEX]) {
1729 struct net_device *netdev;
1730 struct cfg80211_registered_device *rdev;
1731 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1732
1733 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1734 if (!netdev)
1735 return -ENODEV;
1736 if (netdev->ieee80211_ptr) {
1737 rdev = wiphy_to_rdev(
1738 netdev->ieee80211_ptr->wiphy);
1739 state->filter_wiphy = rdev->wiphy_idx;
1740 }
1741 }
1742
1743 return 0;
1744 }
1745
1746 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1747 {
1748 int idx = 0, ret;
1749 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1750 struct cfg80211_registered_device *rdev;
1751
1752 rtnl_lock();
1753 if (!state) {
1754 state = kzalloc(sizeof(*state), GFP_KERNEL);
1755 if (!state) {
1756 rtnl_unlock();
1757 return -ENOMEM;
1758 }
1759 state->filter_wiphy = -1;
1760 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1761 if (ret) {
1762 kfree(state);
1763 rtnl_unlock();
1764 return ret;
1765 }
1766 cb->args[0] = (long)state;
1767 }
1768
1769 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1770 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1771 continue;
1772 if (++idx <= state->start)
1773 continue;
1774 if (state->filter_wiphy != -1 &&
1775 state->filter_wiphy != rdev->wiphy_idx)
1776 continue;
1777 /* attempt to fit multiple wiphy data chunks into the skb */
1778 do {
1779 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1780 skb,
1781 NETLINK_CB(cb->skb).portid,
1782 cb->nlh->nlmsg_seq,
1783 NLM_F_MULTI, state);
1784 if (ret < 0) {
1785 /*
1786 * If sending the wiphy data didn't fit (ENOBUFS
1787 * or EMSGSIZE returned), this SKB is still
1788 * empty (so it's not too big because another
1789 * wiphy dataset is already in the skb) and
1790 * we've not tried to adjust the dump allocation
1791 * yet ... then adjust the alloc size to be
1792 * bigger, and return 1 but with the empty skb.
1793 * This results in an empty message being RX'ed
1794 * in userspace, but that is ignored.
1795 *
1796 * We can then retry with the larger buffer.
1797 */
1798 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1799 !skb->len && !state->split &&
1800 cb->min_dump_alloc < 4096) {
1801 cb->min_dump_alloc = 4096;
1802 state->split_start = 0;
1803 rtnl_unlock();
1804 return 1;
1805 }
1806 idx--;
1807 break;
1808 }
1809 } while (state->split_start > 0);
1810 break;
1811 }
1812 rtnl_unlock();
1813
1814 state->start = idx;
1815
1816 return skb->len;
1817 }
1818
1819 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1820 {
1821 kfree((void *)cb->args[0]);
1822 return 0;
1823 }
1824
1825 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1826 {
1827 struct sk_buff *msg;
1828 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1829 struct nl80211_dump_wiphy_state state = {};
1830
1831 msg = nlmsg_new(4096, GFP_KERNEL);
1832 if (!msg)
1833 return -ENOMEM;
1834
1835 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1836 info->snd_portid, info->snd_seq, 0,
1837 &state) < 0) {
1838 nlmsg_free(msg);
1839 return -ENOBUFS;
1840 }
1841
1842 return genlmsg_reply(msg, info);
1843 }
1844
1845 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1846 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1847 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1848 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1849 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1850 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1851 };
1852
1853 static int parse_txq_params(struct nlattr *tb[],
1854 struct ieee80211_txq_params *txq_params)
1855 {
1856 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1857 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1858 !tb[NL80211_TXQ_ATTR_AIFS])
1859 return -EINVAL;
1860
1861 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1862 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1863 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1864 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1865 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1866
1867 if (txq_params->ac >= NL80211_NUM_ACS)
1868 return -EINVAL;
1869
1870 return 0;
1871 }
1872
1873 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1874 {
1875 /*
1876 * You can only set the channel explicitly for WDS interfaces,
1877 * all others have their channel managed via their respective
1878 * "establish a connection" command (connect, join, ...)
1879 *
1880 * For AP/GO and mesh mode, the channel can be set with the
1881 * channel userspace API, but is only stored and passed to the
1882 * low-level driver when the AP starts or the mesh is joined.
1883 * This is for backward compatibility, userspace can also give
1884 * the channel in the start-ap or join-mesh commands instead.
1885 *
1886 * Monitors are special as they are normally slaved to
1887 * whatever else is going on, so they have their own special
1888 * operation to set the monitor channel if possible.
1889 */
1890 return !wdev ||
1891 wdev->iftype == NL80211_IFTYPE_AP ||
1892 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1893 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1894 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1895 }
1896
1897 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1898 struct genl_info *info,
1899 struct cfg80211_chan_def *chandef)
1900 {
1901 u32 control_freq;
1902
1903 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1904 return -EINVAL;
1905
1906 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1907
1908 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1909 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1910 chandef->center_freq1 = control_freq;
1911 chandef->center_freq2 = 0;
1912
1913 /* Primary channel not allowed */
1914 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1915 return -EINVAL;
1916
1917 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1918 enum nl80211_channel_type chantype;
1919
1920 chantype = nla_get_u32(
1921 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1922
1923 switch (chantype) {
1924 case NL80211_CHAN_NO_HT:
1925 case NL80211_CHAN_HT20:
1926 case NL80211_CHAN_HT40PLUS:
1927 case NL80211_CHAN_HT40MINUS:
1928 cfg80211_chandef_create(chandef, chandef->chan,
1929 chantype);
1930 break;
1931 default:
1932 return -EINVAL;
1933 }
1934 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1935 chandef->width =
1936 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1937 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1938 chandef->center_freq1 =
1939 nla_get_u32(
1940 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1941 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1942 chandef->center_freq2 =
1943 nla_get_u32(
1944 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1945 }
1946
1947 if (!cfg80211_chandef_valid(chandef))
1948 return -EINVAL;
1949
1950 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1951 IEEE80211_CHAN_DISABLED))
1952 return -EINVAL;
1953
1954 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1955 chandef->width == NL80211_CHAN_WIDTH_10) &&
1956 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1957 return -EINVAL;
1958
1959 return 0;
1960 }
1961
1962 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1963 struct net_device *dev,
1964 struct genl_info *info)
1965 {
1966 struct cfg80211_chan_def chandef;
1967 int result;
1968 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1969 struct wireless_dev *wdev = NULL;
1970
1971 if (dev)
1972 wdev = dev->ieee80211_ptr;
1973 if (!nl80211_can_set_dev_channel(wdev))
1974 return -EOPNOTSUPP;
1975 if (wdev)
1976 iftype = wdev->iftype;
1977
1978 result = nl80211_parse_chandef(rdev, info, &chandef);
1979 if (result)
1980 return result;
1981
1982 switch (iftype) {
1983 case NL80211_IFTYPE_AP:
1984 case NL80211_IFTYPE_P2P_GO:
1985 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1986 result = -EINVAL;
1987 break;
1988 }
1989 if (wdev->beacon_interval) {
1990 if (!dev || !rdev->ops->set_ap_chanwidth ||
1991 !(rdev->wiphy.features &
1992 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1993 result = -EBUSY;
1994 break;
1995 }
1996
1997 /* Only allow dynamic channel width changes */
1998 if (chandef.chan != wdev->preset_chandef.chan) {
1999 result = -EBUSY;
2000 break;
2001 }
2002 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2003 if (result)
2004 break;
2005 }
2006 wdev->preset_chandef = chandef;
2007 result = 0;
2008 break;
2009 case NL80211_IFTYPE_MESH_POINT:
2010 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2011 break;
2012 case NL80211_IFTYPE_MONITOR:
2013 result = cfg80211_set_monitor_channel(rdev, &chandef);
2014 break;
2015 default:
2016 result = -EINVAL;
2017 }
2018
2019 return result;
2020 }
2021
2022 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2023 {
2024 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2025 struct net_device *netdev = info->user_ptr[1];
2026
2027 return __nl80211_set_channel(rdev, netdev, info);
2028 }
2029
2030 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2031 {
2032 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2033 struct net_device *dev = info->user_ptr[1];
2034 struct wireless_dev *wdev = dev->ieee80211_ptr;
2035 const u8 *bssid;
2036
2037 if (!info->attrs[NL80211_ATTR_MAC])
2038 return -EINVAL;
2039
2040 if (netif_running(dev))
2041 return -EBUSY;
2042
2043 if (!rdev->ops->set_wds_peer)
2044 return -EOPNOTSUPP;
2045
2046 if (wdev->iftype != NL80211_IFTYPE_WDS)
2047 return -EOPNOTSUPP;
2048
2049 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2050 return rdev_set_wds_peer(rdev, dev, bssid);
2051 }
2052
2053
2054 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2055 {
2056 struct cfg80211_registered_device *rdev;
2057 struct net_device *netdev = NULL;
2058 struct wireless_dev *wdev;
2059 int result = 0, rem_txq_params = 0;
2060 struct nlattr *nl_txq_params;
2061 u32 changed;
2062 u8 retry_short = 0, retry_long = 0;
2063 u32 frag_threshold = 0, rts_threshold = 0;
2064 u8 coverage_class = 0;
2065
2066 ASSERT_RTNL();
2067
2068 /*
2069 * Try to find the wiphy and netdev. Normally this
2070 * function shouldn't need the netdev, but this is
2071 * done for backward compatibility -- previously
2072 * setting the channel was done per wiphy, but now
2073 * it is per netdev. Previous userland like hostapd
2074 * also passed a netdev to set_wiphy, so that it is
2075 * possible to let that go to the right netdev!
2076 */
2077
2078 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2079 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2080
2081 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2082 if (netdev && netdev->ieee80211_ptr)
2083 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2084 else
2085 netdev = NULL;
2086 }
2087
2088 if (!netdev) {
2089 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2090 info->attrs);
2091 if (IS_ERR(rdev))
2092 return PTR_ERR(rdev);
2093 wdev = NULL;
2094 netdev = NULL;
2095 result = 0;
2096 } else
2097 wdev = netdev->ieee80211_ptr;
2098
2099 /*
2100 * end workaround code, by now the rdev is available
2101 * and locked, and wdev may or may not be NULL.
2102 */
2103
2104 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2105 result = cfg80211_dev_rename(
2106 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2107
2108 if (result)
2109 return result;
2110
2111 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2112 struct ieee80211_txq_params txq_params;
2113 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2114
2115 if (!rdev->ops->set_txq_params)
2116 return -EOPNOTSUPP;
2117
2118 if (!netdev)
2119 return -EINVAL;
2120
2121 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2122 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2123 return -EINVAL;
2124
2125 if (!netif_running(netdev))
2126 return -ENETDOWN;
2127
2128 nla_for_each_nested(nl_txq_params,
2129 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2130 rem_txq_params) {
2131 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2132 nla_data(nl_txq_params),
2133 nla_len(nl_txq_params),
2134 txq_params_policy);
2135 if (result)
2136 return result;
2137 result = parse_txq_params(tb, &txq_params);
2138 if (result)
2139 return result;
2140
2141 result = rdev_set_txq_params(rdev, netdev,
2142 &txq_params);
2143 if (result)
2144 return result;
2145 }
2146 }
2147
2148 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2149 result = __nl80211_set_channel(
2150 rdev,
2151 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2152 info);
2153 if (result)
2154 return result;
2155 }
2156
2157 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2158 struct wireless_dev *txp_wdev = wdev;
2159 enum nl80211_tx_power_setting type;
2160 int idx, mbm = 0;
2161
2162 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2163 txp_wdev = NULL;
2164
2165 if (!rdev->ops->set_tx_power)
2166 return -EOPNOTSUPP;
2167
2168 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2169 type = nla_get_u32(info->attrs[idx]);
2170
2171 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2172 (type != NL80211_TX_POWER_AUTOMATIC))
2173 return -EINVAL;
2174
2175 if (type != NL80211_TX_POWER_AUTOMATIC) {
2176 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2177 mbm = nla_get_u32(info->attrs[idx]);
2178 }
2179
2180 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2181 if (result)
2182 return result;
2183 }
2184
2185 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2186 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2187 u32 tx_ant, rx_ant;
2188 if ((!rdev->wiphy.available_antennas_tx &&
2189 !rdev->wiphy.available_antennas_rx) ||
2190 !rdev->ops->set_antenna)
2191 return -EOPNOTSUPP;
2192
2193 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2194 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2195
2196 /* reject antenna configurations which don't match the
2197 * available antenna masks, except for the "all" mask */
2198 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2199 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2200 return -EINVAL;
2201
2202 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2203 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2204
2205 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2206 if (result)
2207 return result;
2208 }
2209
2210 changed = 0;
2211
2212 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2213 retry_short = nla_get_u8(
2214 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2215 if (retry_short == 0)
2216 return -EINVAL;
2217
2218 changed |= WIPHY_PARAM_RETRY_SHORT;
2219 }
2220
2221 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2222 retry_long = nla_get_u8(
2223 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2224 if (retry_long == 0)
2225 return -EINVAL;
2226
2227 changed |= WIPHY_PARAM_RETRY_LONG;
2228 }
2229
2230 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2231 frag_threshold = nla_get_u32(
2232 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2233 if (frag_threshold < 256)
2234 return -EINVAL;
2235
2236 if (frag_threshold != (u32) -1) {
2237 /*
2238 * Fragments (apart from the last one) are required to
2239 * have even length. Make the fragmentation code
2240 * simpler by stripping LSB should someone try to use
2241 * odd threshold value.
2242 */
2243 frag_threshold &= ~0x1;
2244 }
2245 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2246 }
2247
2248 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2249 rts_threshold = nla_get_u32(
2250 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2251 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2252 }
2253
2254 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2255 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2256 return -EINVAL;
2257
2258 coverage_class = nla_get_u8(
2259 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2260 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2261 }
2262
2263 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2264 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2265 return -EOPNOTSUPP;
2266
2267 changed |= WIPHY_PARAM_DYN_ACK;
2268 }
2269
2270 if (changed) {
2271 u8 old_retry_short, old_retry_long;
2272 u32 old_frag_threshold, old_rts_threshold;
2273 u8 old_coverage_class;
2274
2275 if (!rdev->ops->set_wiphy_params)
2276 return -EOPNOTSUPP;
2277
2278 old_retry_short = rdev->wiphy.retry_short;
2279 old_retry_long = rdev->wiphy.retry_long;
2280 old_frag_threshold = rdev->wiphy.frag_threshold;
2281 old_rts_threshold = rdev->wiphy.rts_threshold;
2282 old_coverage_class = rdev->wiphy.coverage_class;
2283
2284 if (changed & WIPHY_PARAM_RETRY_SHORT)
2285 rdev->wiphy.retry_short = retry_short;
2286 if (changed & WIPHY_PARAM_RETRY_LONG)
2287 rdev->wiphy.retry_long = retry_long;
2288 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2289 rdev->wiphy.frag_threshold = frag_threshold;
2290 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2291 rdev->wiphy.rts_threshold = rts_threshold;
2292 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2293 rdev->wiphy.coverage_class = coverage_class;
2294
2295 result = rdev_set_wiphy_params(rdev, changed);
2296 if (result) {
2297 rdev->wiphy.retry_short = old_retry_short;
2298 rdev->wiphy.retry_long = old_retry_long;
2299 rdev->wiphy.frag_threshold = old_frag_threshold;
2300 rdev->wiphy.rts_threshold = old_rts_threshold;
2301 rdev->wiphy.coverage_class = old_coverage_class;
2302 }
2303 }
2304 return 0;
2305 }
2306
2307 static inline u64 wdev_id(struct wireless_dev *wdev)
2308 {
2309 return (u64)wdev->identifier |
2310 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2311 }
2312
2313 static int nl80211_send_chandef(struct sk_buff *msg,
2314 const struct cfg80211_chan_def *chandef)
2315 {
2316 WARN_ON(!cfg80211_chandef_valid(chandef));
2317
2318 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2319 chandef->chan->center_freq))
2320 return -ENOBUFS;
2321 switch (chandef->width) {
2322 case NL80211_CHAN_WIDTH_20_NOHT:
2323 case NL80211_CHAN_WIDTH_20:
2324 case NL80211_CHAN_WIDTH_40:
2325 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2326 cfg80211_get_chandef_type(chandef)))
2327 return -ENOBUFS;
2328 break;
2329 default:
2330 break;
2331 }
2332 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2333 return -ENOBUFS;
2334 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2335 return -ENOBUFS;
2336 if (chandef->center_freq2 &&
2337 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2338 return -ENOBUFS;
2339 return 0;
2340 }
2341
2342 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2343 struct cfg80211_registered_device *rdev,
2344 struct wireless_dev *wdev)
2345 {
2346 struct net_device *dev = wdev->netdev;
2347 void *hdr;
2348
2349 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2350 if (!hdr)
2351 return -1;
2352
2353 if (dev &&
2354 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2355 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2356 goto nla_put_failure;
2357
2358 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2359 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2360 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2361 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2362 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2363 rdev->devlist_generation ^
2364 (cfg80211_rdev_list_generation << 2)))
2365 goto nla_put_failure;
2366
2367 if (rdev->ops->get_channel) {
2368 int ret;
2369 struct cfg80211_chan_def chandef;
2370
2371 ret = rdev_get_channel(rdev, wdev, &chandef);
2372 if (ret == 0) {
2373 if (nl80211_send_chandef(msg, &chandef))
2374 goto nla_put_failure;
2375 }
2376 }
2377
2378 if (wdev->ssid_len) {
2379 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2380 goto nla_put_failure;
2381 }
2382
2383 return genlmsg_end(msg, hdr);
2384
2385 nla_put_failure:
2386 genlmsg_cancel(msg, hdr);
2387 return -EMSGSIZE;
2388 }
2389
2390 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2391 {
2392 int wp_idx = 0;
2393 int if_idx = 0;
2394 int wp_start = cb->args[0];
2395 int if_start = cb->args[1];
2396 struct cfg80211_registered_device *rdev;
2397 struct wireless_dev *wdev;
2398
2399 rtnl_lock();
2400 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2401 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2402 continue;
2403 if (wp_idx < wp_start) {
2404 wp_idx++;
2405 continue;
2406 }
2407 if_idx = 0;
2408
2409 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2410 if (if_idx < if_start) {
2411 if_idx++;
2412 continue;
2413 }
2414 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2415 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2416 rdev, wdev) < 0) {
2417 goto out;
2418 }
2419 if_idx++;
2420 }
2421
2422 wp_idx++;
2423 }
2424 out:
2425 rtnl_unlock();
2426
2427 cb->args[0] = wp_idx;
2428 cb->args[1] = if_idx;
2429
2430 return skb->len;
2431 }
2432
2433 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2434 {
2435 struct sk_buff *msg;
2436 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2437 struct wireless_dev *wdev = info->user_ptr[1];
2438
2439 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2440 if (!msg)
2441 return -ENOMEM;
2442
2443 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2444 rdev, wdev) < 0) {
2445 nlmsg_free(msg);
2446 return -ENOBUFS;
2447 }
2448
2449 return genlmsg_reply(msg, info);
2450 }
2451
2452 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2453 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2454 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2455 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2456 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2457 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2458 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2459 };
2460
2461 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2462 {
2463 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2464 int flag;
2465
2466 *mntrflags = 0;
2467
2468 if (!nla)
2469 return -EINVAL;
2470
2471 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2472 nla, mntr_flags_policy))
2473 return -EINVAL;
2474
2475 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2476 if (flags[flag])
2477 *mntrflags |= (1<<flag);
2478
2479 return 0;
2480 }
2481
2482 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2483 struct net_device *netdev, u8 use_4addr,
2484 enum nl80211_iftype iftype)
2485 {
2486 if (!use_4addr) {
2487 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2488 return -EBUSY;
2489 return 0;
2490 }
2491
2492 switch (iftype) {
2493 case NL80211_IFTYPE_AP_VLAN:
2494 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2495 return 0;
2496 break;
2497 case NL80211_IFTYPE_STATION:
2498 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2499 return 0;
2500 break;
2501 default:
2502 break;
2503 }
2504
2505 return -EOPNOTSUPP;
2506 }
2507
2508 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2509 {
2510 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2511 struct vif_params params;
2512 int err;
2513 enum nl80211_iftype otype, ntype;
2514 struct net_device *dev = info->user_ptr[1];
2515 u32 _flags, *flags = NULL;
2516 bool change = false;
2517
2518 memset(&params, 0, sizeof(params));
2519
2520 otype = ntype = dev->ieee80211_ptr->iftype;
2521
2522 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2523 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2524 if (otype != ntype)
2525 change = true;
2526 if (ntype > NL80211_IFTYPE_MAX)
2527 return -EINVAL;
2528 }
2529
2530 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2531 struct wireless_dev *wdev = dev->ieee80211_ptr;
2532
2533 if (ntype != NL80211_IFTYPE_MESH_POINT)
2534 return -EINVAL;
2535 if (netif_running(dev))
2536 return -EBUSY;
2537
2538 wdev_lock(wdev);
2539 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2540 IEEE80211_MAX_MESH_ID_LEN);
2541 wdev->mesh_id_up_len =
2542 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2543 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2544 wdev->mesh_id_up_len);
2545 wdev_unlock(wdev);
2546 }
2547
2548 if (info->attrs[NL80211_ATTR_4ADDR]) {
2549 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2550 change = true;
2551 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2552 if (err)
2553 return err;
2554 } else {
2555 params.use_4addr = -1;
2556 }
2557
2558 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2559 if (ntype != NL80211_IFTYPE_MONITOR)
2560 return -EINVAL;
2561 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2562 &_flags);
2563 if (err)
2564 return err;
2565
2566 flags = &_flags;
2567 change = true;
2568 }
2569
2570 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2571 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2572 return -EOPNOTSUPP;
2573
2574 if (change)
2575 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2576 else
2577 err = 0;
2578
2579 if (!err && params.use_4addr != -1)
2580 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2581
2582 return err;
2583 }
2584
2585 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2586 {
2587 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2588 struct vif_params params;
2589 struct wireless_dev *wdev;
2590 struct sk_buff *msg;
2591 int err;
2592 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2593 u32 flags;
2594
2595 /* to avoid failing a new interface creation due to pending removal */
2596 cfg80211_destroy_ifaces(rdev);
2597
2598 memset(&params, 0, sizeof(params));
2599
2600 if (!info->attrs[NL80211_ATTR_IFNAME])
2601 return -EINVAL;
2602
2603 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2604 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2605 if (type > NL80211_IFTYPE_MAX)
2606 return -EINVAL;
2607 }
2608
2609 if (!rdev->ops->add_virtual_intf ||
2610 !(rdev->wiphy.interface_modes & (1 << type)))
2611 return -EOPNOTSUPP;
2612
2613 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2614 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2615 info->attrs[NL80211_ATTR_MAC]) {
2616 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2617 ETH_ALEN);
2618 if (!is_valid_ether_addr(params.macaddr))
2619 return -EADDRNOTAVAIL;
2620 }
2621
2622 if (info->attrs[NL80211_ATTR_4ADDR]) {
2623 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2624 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2625 if (err)
2626 return err;
2627 }
2628
2629 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2630 if (!msg)
2631 return -ENOMEM;
2632
2633 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2634 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2635 &flags);
2636
2637 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2638 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2639 return -EOPNOTSUPP;
2640
2641 wdev = rdev_add_virtual_intf(rdev,
2642 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2643 type, err ? NULL : &flags, &params);
2644 if (IS_ERR(wdev)) {
2645 nlmsg_free(msg);
2646 return PTR_ERR(wdev);
2647 }
2648
2649 if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2650 wdev->owner_nlportid = info->snd_portid;
2651
2652 switch (type) {
2653 case NL80211_IFTYPE_MESH_POINT:
2654 if (!info->attrs[NL80211_ATTR_MESH_ID])
2655 break;
2656 wdev_lock(wdev);
2657 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2658 IEEE80211_MAX_MESH_ID_LEN);
2659 wdev->mesh_id_up_len =
2660 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2661 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2662 wdev->mesh_id_up_len);
2663 wdev_unlock(wdev);
2664 break;
2665 case NL80211_IFTYPE_P2P_DEVICE:
2666 /*
2667 * P2P Device doesn't have a netdev, so doesn't go
2668 * through the netdev notifier and must be added here
2669 */
2670 mutex_init(&wdev->mtx);
2671 INIT_LIST_HEAD(&wdev->event_list);
2672 spin_lock_init(&wdev->event_lock);
2673 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2674 spin_lock_init(&wdev->mgmt_registrations_lock);
2675
2676 wdev->identifier = ++rdev->wdev_id;
2677 list_add_rcu(&wdev->list, &rdev->wdev_list);
2678 rdev->devlist_generation++;
2679 break;
2680 default:
2681 break;
2682 }
2683
2684 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2685 rdev, wdev) < 0) {
2686 nlmsg_free(msg);
2687 return -ENOBUFS;
2688 }
2689
2690 return genlmsg_reply(msg, info);
2691 }
2692
2693 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2694 {
2695 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2696 struct wireless_dev *wdev = info->user_ptr[1];
2697
2698 if (!rdev->ops->del_virtual_intf)
2699 return -EOPNOTSUPP;
2700
2701 /*
2702 * If we remove a wireless device without a netdev then clear
2703 * user_ptr[1] so that nl80211_post_doit won't dereference it
2704 * to check if it needs to do dev_put(). Otherwise it crashes
2705 * since the wdev has been freed, unlike with a netdev where
2706 * we need the dev_put() for the netdev to really be freed.
2707 */
2708 if (!wdev->netdev)
2709 info->user_ptr[1] = NULL;
2710
2711 return rdev_del_virtual_intf(rdev, wdev);
2712 }
2713
2714 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2715 {
2716 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2717 struct net_device *dev = info->user_ptr[1];
2718 u16 noack_map;
2719
2720 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2721 return -EINVAL;
2722
2723 if (!rdev->ops->set_noack_map)
2724 return -EOPNOTSUPP;
2725
2726 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2727
2728 return rdev_set_noack_map(rdev, dev, noack_map);
2729 }
2730
2731 struct get_key_cookie {
2732 struct sk_buff *msg;
2733 int error;
2734 int idx;
2735 };
2736
2737 static void get_key_callback(void *c, struct key_params *params)
2738 {
2739 struct nlattr *key;
2740 struct get_key_cookie *cookie = c;
2741
2742 if ((params->key &&
2743 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2744 params->key_len, params->key)) ||
2745 (params->seq &&
2746 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2747 params->seq_len, params->seq)) ||
2748 (params->cipher &&
2749 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2750 params->cipher)))
2751 goto nla_put_failure;
2752
2753 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2754 if (!key)
2755 goto nla_put_failure;
2756
2757 if ((params->key &&
2758 nla_put(cookie->msg, NL80211_KEY_DATA,
2759 params->key_len, params->key)) ||
2760 (params->seq &&
2761 nla_put(cookie->msg, NL80211_KEY_SEQ,
2762 params->seq_len, params->seq)) ||
2763 (params->cipher &&
2764 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2765 params->cipher)))
2766 goto nla_put_failure;
2767
2768 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2769 goto nla_put_failure;
2770
2771 nla_nest_end(cookie->msg, key);
2772
2773 return;
2774 nla_put_failure:
2775 cookie->error = 1;
2776 }
2777
2778 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2779 {
2780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2781 int err;
2782 struct net_device *dev = info->user_ptr[1];
2783 u8 key_idx = 0;
2784 const u8 *mac_addr = NULL;
2785 bool pairwise;
2786 struct get_key_cookie cookie = {
2787 .error = 0,
2788 };
2789 void *hdr;
2790 struct sk_buff *msg;
2791
2792 if (info->attrs[NL80211_ATTR_KEY_IDX])
2793 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2794
2795 if (key_idx > 5)
2796 return -EINVAL;
2797
2798 if (info->attrs[NL80211_ATTR_MAC])
2799 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2800
2801 pairwise = !!mac_addr;
2802 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2803 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2804 if (kt >= NUM_NL80211_KEYTYPES)
2805 return -EINVAL;
2806 if (kt != NL80211_KEYTYPE_GROUP &&
2807 kt != NL80211_KEYTYPE_PAIRWISE)
2808 return -EINVAL;
2809 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2810 }
2811
2812 if (!rdev->ops->get_key)
2813 return -EOPNOTSUPP;
2814
2815 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2816 if (!msg)
2817 return -ENOMEM;
2818
2819 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2820 NL80211_CMD_NEW_KEY);
2821 if (!hdr)
2822 goto nla_put_failure;
2823
2824 cookie.msg = msg;
2825 cookie.idx = key_idx;
2826
2827 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2828 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2829 goto nla_put_failure;
2830 if (mac_addr &&
2831 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2832 goto nla_put_failure;
2833
2834 if (pairwise && mac_addr &&
2835 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2836 return -ENOENT;
2837
2838 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2839 get_key_callback);
2840
2841 if (err)
2842 goto free_msg;
2843
2844 if (cookie.error)
2845 goto nla_put_failure;
2846
2847 genlmsg_end(msg, hdr);
2848 return genlmsg_reply(msg, info);
2849
2850 nla_put_failure:
2851 err = -ENOBUFS;
2852 free_msg:
2853 nlmsg_free(msg);
2854 return err;
2855 }
2856
2857 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2858 {
2859 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2860 struct key_parse key;
2861 int err;
2862 struct net_device *dev = info->user_ptr[1];
2863
2864 err = nl80211_parse_key(info, &key);
2865 if (err)
2866 return err;
2867
2868 if (key.idx < 0)
2869 return -EINVAL;
2870
2871 /* only support setting default key */
2872 if (!key.def && !key.defmgmt)
2873 return -EINVAL;
2874
2875 wdev_lock(dev->ieee80211_ptr);
2876
2877 if (key.def) {
2878 if (!rdev->ops->set_default_key) {
2879 err = -EOPNOTSUPP;
2880 goto out;
2881 }
2882
2883 err = nl80211_key_allowed(dev->ieee80211_ptr);
2884 if (err)
2885 goto out;
2886
2887 err = rdev_set_default_key(rdev, dev, key.idx,
2888 key.def_uni, key.def_multi);
2889
2890 if (err)
2891 goto out;
2892
2893 #ifdef CONFIG_CFG80211_WEXT
2894 dev->ieee80211_ptr->wext.default_key = key.idx;
2895 #endif
2896 } else {
2897 if (key.def_uni || !key.def_multi) {
2898 err = -EINVAL;
2899 goto out;
2900 }
2901
2902 if (!rdev->ops->set_default_mgmt_key) {
2903 err = -EOPNOTSUPP;
2904 goto out;
2905 }
2906
2907 err = nl80211_key_allowed(dev->ieee80211_ptr);
2908 if (err)
2909 goto out;
2910
2911 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2912 if (err)
2913 goto out;
2914
2915 #ifdef CONFIG_CFG80211_WEXT
2916 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2917 #endif
2918 }
2919
2920 out:
2921 wdev_unlock(dev->ieee80211_ptr);
2922
2923 return err;
2924 }
2925
2926 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2927 {
2928 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2929 int err;
2930 struct net_device *dev = info->user_ptr[1];
2931 struct key_parse key;
2932 const u8 *mac_addr = NULL;
2933
2934 err = nl80211_parse_key(info, &key);
2935 if (err)
2936 return err;
2937
2938 if (!key.p.key)
2939 return -EINVAL;
2940
2941 if (info->attrs[NL80211_ATTR_MAC])
2942 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2943
2944 if (key.type == -1) {
2945 if (mac_addr)
2946 key.type = NL80211_KEYTYPE_PAIRWISE;
2947 else
2948 key.type = NL80211_KEYTYPE_GROUP;
2949 }
2950
2951 /* for now */
2952 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2953 key.type != NL80211_KEYTYPE_GROUP)
2954 return -EINVAL;
2955
2956 if (!rdev->ops->add_key)
2957 return -EOPNOTSUPP;
2958
2959 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2960 key.type == NL80211_KEYTYPE_PAIRWISE,
2961 mac_addr))
2962 return -EINVAL;
2963
2964 wdev_lock(dev->ieee80211_ptr);
2965 err = nl80211_key_allowed(dev->ieee80211_ptr);
2966 if (!err)
2967 err = rdev_add_key(rdev, dev, key.idx,
2968 key.type == NL80211_KEYTYPE_PAIRWISE,
2969 mac_addr, &key.p);
2970 wdev_unlock(dev->ieee80211_ptr);
2971
2972 return err;
2973 }
2974
2975 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2976 {
2977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2978 int err;
2979 struct net_device *dev = info->user_ptr[1];
2980 u8 *mac_addr = NULL;
2981 struct key_parse key;
2982
2983 err = nl80211_parse_key(info, &key);
2984 if (err)
2985 return err;
2986
2987 if (info->attrs[NL80211_ATTR_MAC])
2988 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2989
2990 if (key.type == -1) {
2991 if (mac_addr)
2992 key.type = NL80211_KEYTYPE_PAIRWISE;
2993 else
2994 key.type = NL80211_KEYTYPE_GROUP;
2995 }
2996
2997 /* for now */
2998 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2999 key.type != NL80211_KEYTYPE_GROUP)
3000 return -EINVAL;
3001
3002 if (!rdev->ops->del_key)
3003 return -EOPNOTSUPP;
3004
3005 wdev_lock(dev->ieee80211_ptr);
3006 err = nl80211_key_allowed(dev->ieee80211_ptr);
3007
3008 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3009 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3010 err = -ENOENT;
3011
3012 if (!err)
3013 err = rdev_del_key(rdev, dev, key.idx,
3014 key.type == NL80211_KEYTYPE_PAIRWISE,
3015 mac_addr);
3016
3017 #ifdef CONFIG_CFG80211_WEXT
3018 if (!err) {
3019 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3020 dev->ieee80211_ptr->wext.default_key = -1;
3021 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3022 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3023 }
3024 #endif
3025 wdev_unlock(dev->ieee80211_ptr);
3026
3027 return err;
3028 }
3029
3030 /* This function returns an error or the number of nested attributes */
3031 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3032 {
3033 struct nlattr *attr;
3034 int n_entries = 0, tmp;
3035
3036 nla_for_each_nested(attr, nl_attr, tmp) {
3037 if (nla_len(attr) != ETH_ALEN)
3038 return -EINVAL;
3039
3040 n_entries++;
3041 }
3042
3043 return n_entries;
3044 }
3045
3046 /*
3047 * This function parses ACL information and allocates memory for ACL data.
3048 * On successful return, the calling function is responsible to free the
3049 * ACL buffer returned by this function.
3050 */
3051 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3052 struct genl_info *info)
3053 {
3054 enum nl80211_acl_policy acl_policy;
3055 struct nlattr *attr;
3056 struct cfg80211_acl_data *acl;
3057 int i = 0, n_entries, tmp;
3058
3059 if (!wiphy->max_acl_mac_addrs)
3060 return ERR_PTR(-EOPNOTSUPP);
3061
3062 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3063 return ERR_PTR(-EINVAL);
3064
3065 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3066 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3067 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3068 return ERR_PTR(-EINVAL);
3069
3070 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3071 return ERR_PTR(-EINVAL);
3072
3073 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3074 if (n_entries < 0)
3075 return ERR_PTR(n_entries);
3076
3077 if (n_entries > wiphy->max_acl_mac_addrs)
3078 return ERR_PTR(-ENOTSUPP);
3079
3080 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3081 GFP_KERNEL);
3082 if (!acl)
3083 return ERR_PTR(-ENOMEM);
3084
3085 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3086 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3087 i++;
3088 }
3089
3090 acl->n_acl_entries = n_entries;
3091 acl->acl_policy = acl_policy;
3092
3093 return acl;
3094 }
3095
3096 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3097 {
3098 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3099 struct net_device *dev = info->user_ptr[1];
3100 struct cfg80211_acl_data *acl;
3101 int err;
3102
3103 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3104 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3105 return -EOPNOTSUPP;
3106
3107 if (!dev->ieee80211_ptr->beacon_interval)
3108 return -EINVAL;
3109
3110 acl = parse_acl_data(&rdev->wiphy, info);
3111 if (IS_ERR(acl))
3112 return PTR_ERR(acl);
3113
3114 err = rdev_set_mac_acl(rdev, dev, acl);
3115
3116 kfree(acl);
3117
3118 return err;
3119 }
3120
3121 static int nl80211_parse_beacon(struct nlattr *attrs[],
3122 struct cfg80211_beacon_data *bcn)
3123 {
3124 bool haveinfo = false;
3125
3126 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3127 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3128 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3129 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3130 return -EINVAL;
3131
3132 memset(bcn, 0, sizeof(*bcn));
3133
3134 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3135 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3136 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3137 if (!bcn->head_len)
3138 return -EINVAL;
3139 haveinfo = true;
3140 }
3141
3142 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3143 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3144 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3145 haveinfo = true;
3146 }
3147
3148 if (!haveinfo)
3149 return -EINVAL;
3150
3151 if (attrs[NL80211_ATTR_IE]) {
3152 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3153 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3154 }
3155
3156 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3157 bcn->proberesp_ies =
3158 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3159 bcn->proberesp_ies_len =
3160 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3161 }
3162
3163 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3164 bcn->assocresp_ies =
3165 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3166 bcn->assocresp_ies_len =
3167 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3168 }
3169
3170 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3171 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3172 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3173 }
3174
3175 return 0;
3176 }
3177
3178 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3179 struct cfg80211_ap_settings *params)
3180 {
3181 struct wireless_dev *wdev;
3182 bool ret = false;
3183
3184 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3185 if (wdev->iftype != NL80211_IFTYPE_AP &&
3186 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3187 continue;
3188
3189 if (!wdev->preset_chandef.chan)
3190 continue;
3191
3192 params->chandef = wdev->preset_chandef;
3193 ret = true;
3194 break;
3195 }
3196
3197 return ret;
3198 }
3199
3200 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3201 enum nl80211_auth_type auth_type,
3202 enum nl80211_commands cmd)
3203 {
3204 if (auth_type > NL80211_AUTHTYPE_MAX)
3205 return false;
3206
3207 switch (cmd) {
3208 case NL80211_CMD_AUTHENTICATE:
3209 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3210 auth_type == NL80211_AUTHTYPE_SAE)
3211 return false;
3212 return true;
3213 case NL80211_CMD_CONNECT:
3214 case NL80211_CMD_START_AP:
3215 /* SAE not supported yet */
3216 if (auth_type == NL80211_AUTHTYPE_SAE)
3217 return false;
3218 return true;
3219 default:
3220 return false;
3221 }
3222 }
3223
3224 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3225 {
3226 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3227 struct net_device *dev = info->user_ptr[1];
3228 struct wireless_dev *wdev = dev->ieee80211_ptr;
3229 struct cfg80211_ap_settings params;
3230 int err;
3231
3232 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3233 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3234 return -EOPNOTSUPP;
3235
3236 if (!rdev->ops->start_ap)
3237 return -EOPNOTSUPP;
3238
3239 if (wdev->beacon_interval)
3240 return -EALREADY;
3241
3242 memset(&params, 0, sizeof(params));
3243
3244 /* these are required for START_AP */
3245 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3246 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3247 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3248 return -EINVAL;
3249
3250 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3251 if (err)
3252 return err;
3253
3254 params.beacon_interval =
3255 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3256 params.dtim_period =
3257 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3258
3259 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3260 if (err)
3261 return err;
3262
3263 /*
3264 * In theory, some of these attributes should be required here
3265 * but since they were not used when the command was originally
3266 * added, keep them optional for old user space programs to let
3267 * them continue to work with drivers that do not need the
3268 * additional information -- drivers must check!
3269 */
3270 if (info->attrs[NL80211_ATTR_SSID]) {
3271 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3272 params.ssid_len =
3273 nla_len(info->attrs[NL80211_ATTR_SSID]);
3274 if (params.ssid_len == 0 ||
3275 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3276 return -EINVAL;
3277 }
3278
3279 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3280 params.hidden_ssid = nla_get_u32(
3281 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3282 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3283 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3284 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3285 return -EINVAL;
3286 }
3287
3288 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3289
3290 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3291 params.auth_type = nla_get_u32(
3292 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3293 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3294 NL80211_CMD_START_AP))
3295 return -EINVAL;
3296 } else
3297 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3298
3299 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3300 NL80211_MAX_NR_CIPHER_SUITES);
3301 if (err)
3302 return err;
3303
3304 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3305 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3306 return -EOPNOTSUPP;
3307 params.inactivity_timeout = nla_get_u16(
3308 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3309 }
3310
3311 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3312 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3313 return -EINVAL;
3314 params.p2p_ctwindow =
3315 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3316 if (params.p2p_ctwindow > 127)
3317 return -EINVAL;
3318 if (params.p2p_ctwindow != 0 &&
3319 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3320 return -EINVAL;
3321 }
3322
3323 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3324 u8 tmp;
3325
3326 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3327 return -EINVAL;
3328 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3329 if (tmp > 1)
3330 return -EINVAL;
3331 params.p2p_opp_ps = tmp;
3332 if (params.p2p_opp_ps != 0 &&
3333 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3334 return -EINVAL;
3335 }
3336
3337 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3338 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3339 if (err)
3340 return err;
3341 } else if (wdev->preset_chandef.chan) {
3342 params.chandef = wdev->preset_chandef;
3343 } else if (!nl80211_get_ap_channel(rdev, &params))
3344 return -EINVAL;
3345
3346 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3347 wdev->iftype))
3348 return -EINVAL;
3349
3350 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3351 params.acl = parse_acl_data(&rdev->wiphy, info);
3352 if (IS_ERR(params.acl))
3353 return PTR_ERR(params.acl);
3354 }
3355
3356 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3357 params.smps_mode =
3358 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3359 switch (params.smps_mode) {
3360 case NL80211_SMPS_OFF:
3361 break;
3362 case NL80211_SMPS_STATIC:
3363 if (!(rdev->wiphy.features &
3364 NL80211_FEATURE_STATIC_SMPS))
3365 return -EINVAL;
3366 break;
3367 case NL80211_SMPS_DYNAMIC:
3368 if (!(rdev->wiphy.features &
3369 NL80211_FEATURE_DYNAMIC_SMPS))
3370 return -EINVAL;
3371 break;
3372 default:
3373 return -EINVAL;
3374 }
3375 } else {
3376 params.smps_mode = NL80211_SMPS_OFF;
3377 }
3378
3379 wdev_lock(wdev);
3380 err = rdev_start_ap(rdev, dev, &params);
3381 if (!err) {
3382 wdev->preset_chandef = params.chandef;
3383 wdev->beacon_interval = params.beacon_interval;
3384 wdev->chandef = params.chandef;
3385 wdev->ssid_len = params.ssid_len;
3386 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3387 }
3388 wdev_unlock(wdev);
3389
3390 kfree(params.acl);
3391
3392 return err;
3393 }
3394
3395 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3396 {
3397 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3398 struct net_device *dev = info->user_ptr[1];
3399 struct wireless_dev *wdev = dev->ieee80211_ptr;
3400 struct cfg80211_beacon_data params;
3401 int err;
3402
3403 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3404 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3405 return -EOPNOTSUPP;
3406
3407 if (!rdev->ops->change_beacon)
3408 return -EOPNOTSUPP;
3409
3410 if (!wdev->beacon_interval)
3411 return -EINVAL;
3412
3413 err = nl80211_parse_beacon(info->attrs, &params);
3414 if (err)
3415 return err;
3416
3417 wdev_lock(wdev);
3418 err = rdev_change_beacon(rdev, dev, &params);
3419 wdev_unlock(wdev);
3420
3421 return err;
3422 }
3423
3424 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3425 {
3426 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3427 struct net_device *dev = info->user_ptr[1];
3428
3429 return cfg80211_stop_ap(rdev, dev, false);
3430 }
3431
3432 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3433 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3434 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3435 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3436 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3437 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3438 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3439 };
3440
3441 static int parse_station_flags(struct genl_info *info,
3442 enum nl80211_iftype iftype,
3443 struct station_parameters *params)
3444 {
3445 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3446 struct nlattr *nla;
3447 int flag;
3448
3449 /*
3450 * Try parsing the new attribute first so userspace
3451 * can specify both for older kernels.
3452 */
3453 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3454 if (nla) {
3455 struct nl80211_sta_flag_update *sta_flags;
3456
3457 sta_flags = nla_data(nla);
3458 params->sta_flags_mask = sta_flags->mask;
3459 params->sta_flags_set = sta_flags->set;
3460 params->sta_flags_set &= params->sta_flags_mask;
3461 if ((params->sta_flags_mask |
3462 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3463 return -EINVAL;
3464 return 0;
3465 }
3466
3467 /* if present, parse the old attribute */
3468
3469 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3470 if (!nla)
3471 return 0;
3472
3473 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3474 nla, sta_flags_policy))
3475 return -EINVAL;
3476
3477 /*
3478 * Only allow certain flags for interface types so that
3479 * other attributes are silently ignored. Remember that
3480 * this is backward compatibility code with old userspace
3481 * and shouldn't be hit in other cases anyway.
3482 */
3483 switch (iftype) {
3484 case NL80211_IFTYPE_AP:
3485 case NL80211_IFTYPE_AP_VLAN:
3486 case NL80211_IFTYPE_P2P_GO:
3487 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3488 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3489 BIT(NL80211_STA_FLAG_WME) |
3490 BIT(NL80211_STA_FLAG_MFP);
3491 break;
3492 case NL80211_IFTYPE_P2P_CLIENT:
3493 case NL80211_IFTYPE_STATION:
3494 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3495 BIT(NL80211_STA_FLAG_TDLS_PEER);
3496 break;
3497 case NL80211_IFTYPE_MESH_POINT:
3498 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3499 BIT(NL80211_STA_FLAG_MFP) |
3500 BIT(NL80211_STA_FLAG_AUTHORIZED);
3501 default:
3502 return -EINVAL;
3503 }
3504
3505 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3506 if (flags[flag]) {
3507 params->sta_flags_set |= (1<<flag);
3508
3509 /* no longer support new API additions in old API */
3510 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3511 return -EINVAL;
3512 }
3513 }
3514
3515 return 0;
3516 }
3517
3518 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3519 int attr)
3520 {
3521 struct nlattr *rate;
3522 u32 bitrate;
3523 u16 bitrate_compat;
3524
3525 rate = nla_nest_start(msg, attr);
3526 if (!rate)
3527 return false;
3528
3529 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3530 bitrate = cfg80211_calculate_bitrate(info);
3531 /* report 16-bit bitrate only if we can */
3532 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3533 if (bitrate > 0 &&
3534 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3535 return false;
3536 if (bitrate_compat > 0 &&
3537 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3538 return false;
3539
3540 if (info->flags & RATE_INFO_FLAGS_MCS) {
3541 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3542 return false;
3543 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3544 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3545 return false;
3546 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3547 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3548 return false;
3549 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3550 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3551 return false;
3552 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3553 return false;
3554 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3555 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3556 return false;
3557 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3558 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3559 return false;
3560 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3561 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3562 return false;
3563 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3564 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3565 return false;
3566 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3567 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3568 return false;
3569 }
3570
3571 nla_nest_end(msg, rate);
3572 return true;
3573 }
3574
3575 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3576 int id)
3577 {
3578 void *attr;
3579 int i = 0;
3580
3581 if (!mask)
3582 return true;
3583
3584 attr = nla_nest_start(msg, id);
3585 if (!attr)
3586 return false;
3587
3588 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3589 if (!(mask & BIT(i)))
3590 continue;
3591
3592 if (nla_put_u8(msg, i, signal[i]))
3593 return false;
3594 }
3595
3596 nla_nest_end(msg, attr);
3597
3598 return true;
3599 }
3600
3601 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3602 int flags,
3603 struct cfg80211_registered_device *rdev,
3604 struct net_device *dev,
3605 const u8 *mac_addr, struct station_info *sinfo)
3606 {
3607 void *hdr;
3608 struct nlattr *sinfoattr, *bss_param;
3609
3610 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3611 if (!hdr)
3612 return -1;
3613
3614 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3615 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3616 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3617 goto nla_put_failure;
3618
3619 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3620 if (!sinfoattr)
3621 goto nla_put_failure;
3622 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3623 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3624 sinfo->connected_time))
3625 goto nla_put_failure;
3626 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3627 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3628 sinfo->inactive_time))
3629 goto nla_put_failure;
3630 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3631 STATION_INFO_RX_BYTES64)) &&
3632 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3633 (u32)sinfo->rx_bytes))
3634 goto nla_put_failure;
3635 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3636 STATION_INFO_TX_BYTES64)) &&
3637 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3638 (u32)sinfo->tx_bytes))
3639 goto nla_put_failure;
3640 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3641 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3642 sinfo->rx_bytes))
3643 goto nla_put_failure;
3644 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3645 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3646 sinfo->tx_bytes))
3647 goto nla_put_failure;
3648 if ((sinfo->filled & STATION_INFO_LLID) &&
3649 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3650 goto nla_put_failure;
3651 if ((sinfo->filled & STATION_INFO_PLID) &&
3652 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3653 goto nla_put_failure;
3654 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3655 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3656 sinfo->plink_state))
3657 goto nla_put_failure;
3658 switch (rdev->wiphy.signal_type) {
3659 case CFG80211_SIGNAL_TYPE_MBM:
3660 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3661 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3662 sinfo->signal))
3663 goto nla_put_failure;
3664 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3665 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3666 sinfo->signal_avg))
3667 goto nla_put_failure;
3668 break;
3669 default:
3670 break;
3671 }
3672 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3673 if (!nl80211_put_signal(msg, sinfo->chains,
3674 sinfo->chain_signal,
3675 NL80211_STA_INFO_CHAIN_SIGNAL))
3676 goto nla_put_failure;
3677 }
3678 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3679 if (!nl80211_put_signal(msg, sinfo->chains,
3680 sinfo->chain_signal_avg,
3681 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3682 goto nla_put_failure;
3683 }
3684 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3685 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3686 NL80211_STA_INFO_TX_BITRATE))
3687 goto nla_put_failure;
3688 }
3689 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3690 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3691 NL80211_STA_INFO_RX_BITRATE))
3692 goto nla_put_failure;
3693 }
3694 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3695 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3696 sinfo->rx_packets))
3697 goto nla_put_failure;
3698 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3699 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3700 sinfo->tx_packets))
3701 goto nla_put_failure;
3702 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3703 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3704 sinfo->tx_retries))
3705 goto nla_put_failure;
3706 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3707 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3708 sinfo->tx_failed))
3709 goto nla_put_failure;
3710 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3711 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3712 sinfo->expected_throughput))
3713 goto nla_put_failure;
3714 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3715 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3716 sinfo->beacon_loss_count))
3717 goto nla_put_failure;
3718 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3719 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3720 sinfo->local_pm))
3721 goto nla_put_failure;
3722 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3723 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3724 sinfo->peer_pm))
3725 goto nla_put_failure;
3726 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3727 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3728 sinfo->nonpeer_pm))
3729 goto nla_put_failure;
3730 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3731 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3732 if (!bss_param)
3733 goto nla_put_failure;
3734
3735 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3736 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3737 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3738 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3739 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3740 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3741 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3742 sinfo->bss_param.dtim_period) ||
3743 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3744 sinfo->bss_param.beacon_interval))
3745 goto nla_put_failure;
3746
3747 nla_nest_end(msg, bss_param);
3748 }
3749 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3750 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3751 sizeof(struct nl80211_sta_flag_update),
3752 &sinfo->sta_flags))
3753 goto nla_put_failure;
3754 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3755 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3756 sinfo->t_offset))
3757 goto nla_put_failure;
3758 nla_nest_end(msg, sinfoattr);
3759
3760 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3761 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3762 sinfo->assoc_req_ies))
3763 goto nla_put_failure;
3764
3765 return genlmsg_end(msg, hdr);
3766
3767 nla_put_failure:
3768 genlmsg_cancel(msg, hdr);
3769 return -EMSGSIZE;
3770 }
3771
3772 static int nl80211_dump_station(struct sk_buff *skb,
3773 struct netlink_callback *cb)
3774 {
3775 struct station_info sinfo;
3776 struct cfg80211_registered_device *rdev;
3777 struct wireless_dev *wdev;
3778 u8 mac_addr[ETH_ALEN];
3779 int sta_idx = cb->args[2];
3780 int err;
3781
3782 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3783 if (err)
3784 return err;
3785
3786 if (!wdev->netdev) {
3787 err = -EINVAL;
3788 goto out_err;
3789 }
3790
3791 if (!rdev->ops->dump_station) {
3792 err = -EOPNOTSUPP;
3793 goto out_err;
3794 }
3795
3796 while (1) {
3797 memset(&sinfo, 0, sizeof(sinfo));
3798 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3799 mac_addr, &sinfo);
3800 if (err == -ENOENT)
3801 break;
3802 if (err)
3803 goto out_err;
3804
3805 if (nl80211_send_station(skb,
3806 NETLINK_CB(cb->skb).portid,
3807 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3808 rdev, wdev->netdev, mac_addr,
3809 &sinfo) < 0)
3810 goto out;
3811
3812 sta_idx++;
3813 }
3814
3815
3816 out:
3817 cb->args[2] = sta_idx;
3818 err = skb->len;
3819 out_err:
3820 nl80211_finish_wdev_dump(rdev);
3821
3822 return err;
3823 }
3824
3825 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3826 {
3827 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3828 struct net_device *dev = info->user_ptr[1];
3829 struct station_info sinfo;
3830 struct sk_buff *msg;
3831 u8 *mac_addr = NULL;
3832 int err;
3833
3834 memset(&sinfo, 0, sizeof(sinfo));
3835
3836 if (!info->attrs[NL80211_ATTR_MAC])
3837 return -EINVAL;
3838
3839 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3840
3841 if (!rdev->ops->get_station)
3842 return -EOPNOTSUPP;
3843
3844 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3845 if (err)
3846 return err;
3847
3848 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3849 if (!msg)
3850 return -ENOMEM;
3851
3852 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3853 rdev, dev, mac_addr, &sinfo) < 0) {
3854 nlmsg_free(msg);
3855 return -ENOBUFS;
3856 }
3857
3858 return genlmsg_reply(msg, info);
3859 }
3860
3861 int cfg80211_check_station_change(struct wiphy *wiphy,
3862 struct station_parameters *params,
3863 enum cfg80211_station_type statype)
3864 {
3865 if (params->listen_interval != -1)
3866 return -EINVAL;
3867 if (params->aid &&
3868 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3869 return -EINVAL;
3870
3871 /* When you run into this, adjust the code below for the new flag */
3872 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3873
3874 switch (statype) {
3875 case CFG80211_STA_MESH_PEER_KERNEL:
3876 case CFG80211_STA_MESH_PEER_USER:
3877 /*
3878 * No ignoring the TDLS flag here -- the userspace mesh
3879 * code doesn't have the bug of including TDLS in the
3880 * mask everywhere.
3881 */
3882 if (params->sta_flags_mask &
3883 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3884 BIT(NL80211_STA_FLAG_MFP) |
3885 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3886 return -EINVAL;
3887 break;
3888 case CFG80211_STA_TDLS_PEER_SETUP:
3889 case CFG80211_STA_TDLS_PEER_ACTIVE:
3890 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3891 return -EINVAL;
3892 /* ignore since it can't change */
3893 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3894 break;
3895 default:
3896 /* disallow mesh-specific things */
3897 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3898 return -EINVAL;
3899 if (params->local_pm)
3900 return -EINVAL;
3901 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3902 return -EINVAL;
3903 }
3904
3905 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3906 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3907 /* TDLS can't be set, ... */
3908 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3909 return -EINVAL;
3910 /*
3911 * ... but don't bother the driver with it. This works around
3912 * a hostapd/wpa_supplicant issue -- it always includes the
3913 * TLDS_PEER flag in the mask even for AP mode.
3914 */
3915 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3916 }
3917
3918 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3919 /* reject other things that can't change */
3920 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3921 return -EINVAL;
3922 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3923 return -EINVAL;
3924 if (params->supported_rates)
3925 return -EINVAL;
3926 if (params->ext_capab || params->ht_capa || params->vht_capa)
3927 return -EINVAL;
3928 }
3929
3930 if (statype != CFG80211_STA_AP_CLIENT) {
3931 if (params->vlan)
3932 return -EINVAL;
3933 }
3934
3935 switch (statype) {
3936 case CFG80211_STA_AP_MLME_CLIENT:
3937 /* Use this only for authorizing/unauthorizing a station */
3938 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3939 return -EOPNOTSUPP;
3940 break;
3941 case CFG80211_STA_AP_CLIENT:
3942 /* accept only the listed bits */
3943 if (params->sta_flags_mask &
3944 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3945 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3946 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3947 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3948 BIT(NL80211_STA_FLAG_WME) |
3949 BIT(NL80211_STA_FLAG_MFP)))
3950 return -EINVAL;
3951
3952 /* but authenticated/associated only if driver handles it */
3953 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3954 params->sta_flags_mask &
3955 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3956 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3957 return -EINVAL;
3958 break;
3959 case CFG80211_STA_IBSS:
3960 case CFG80211_STA_AP_STA:
3961 /* reject any changes other than AUTHORIZED */
3962 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3963 return -EINVAL;
3964 break;
3965 case CFG80211_STA_TDLS_PEER_SETUP:
3966 /* reject any changes other than AUTHORIZED or WME */
3967 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3968 BIT(NL80211_STA_FLAG_WME)))
3969 return -EINVAL;
3970 /* force (at least) rates when authorizing */
3971 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3972 !params->supported_rates)
3973 return -EINVAL;
3974 break;
3975 case CFG80211_STA_TDLS_PEER_ACTIVE:
3976 /* reject any changes */
3977 return -EINVAL;
3978 case CFG80211_STA_MESH_PEER_KERNEL:
3979 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3980 return -EINVAL;
3981 break;
3982 case CFG80211_STA_MESH_PEER_USER:
3983 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3984 return -EINVAL;
3985 break;
3986 }
3987
3988 return 0;
3989 }
3990 EXPORT_SYMBOL(cfg80211_check_station_change);
3991
3992 /*
3993 * Get vlan interface making sure it is running and on the right wiphy.
3994 */
3995 static struct net_device *get_vlan(struct genl_info *info,
3996 struct cfg80211_registered_device *rdev)
3997 {
3998 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3999 struct net_device *v;
4000 int ret;
4001
4002 if (!vlanattr)
4003 return NULL;
4004
4005 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4006 if (!v)
4007 return ERR_PTR(-ENODEV);
4008
4009 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4010 ret = -EINVAL;
4011 goto error;
4012 }
4013
4014 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4015 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4016 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4017 ret = -EINVAL;
4018 goto error;
4019 }
4020
4021 if (!netif_running(v)) {
4022 ret = -ENETDOWN;
4023 goto error;
4024 }
4025
4026 return v;
4027 error:
4028 dev_put(v);
4029 return ERR_PTR(ret);
4030 }
4031
4032 static const struct nla_policy
4033 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4034 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4035 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4036 };
4037
4038 static int nl80211_parse_sta_wme(struct genl_info *info,
4039 struct station_parameters *params)
4040 {
4041 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4042 struct nlattr *nla;
4043 int err;
4044
4045 /* parse WME attributes if present */
4046 if (!info->attrs[NL80211_ATTR_STA_WME])
4047 return 0;
4048
4049 nla = info->attrs[NL80211_ATTR_STA_WME];
4050 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4051 nl80211_sta_wme_policy);
4052 if (err)
4053 return err;
4054
4055 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4056 params->uapsd_queues = nla_get_u8(
4057 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4058 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4059 return -EINVAL;
4060
4061 if (tb[NL80211_STA_WME_MAX_SP])
4062 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4063
4064 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4065 return -EINVAL;
4066
4067 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4068
4069 return 0;
4070 }
4071
4072 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4073 struct station_parameters *params)
4074 {
4075 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4076 params->supported_channels =
4077 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4078 params->supported_channels_len =
4079 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4080 /*
4081 * Need to include at least one (first channel, number of
4082 * channels) tuple for each subband, and must have proper
4083 * tuples for the rest of the data as well.
4084 */
4085 if (params->supported_channels_len < 2)
4086 return -EINVAL;
4087 if (params->supported_channels_len % 2)
4088 return -EINVAL;
4089 }
4090
4091 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4092 params->supported_oper_classes =
4093 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4094 params->supported_oper_classes_len =
4095 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4096 /*
4097 * The value of the Length field of the Supported Operating
4098 * Classes element is between 2 and 253.
4099 */
4100 if (params->supported_oper_classes_len < 2 ||
4101 params->supported_oper_classes_len > 253)
4102 return -EINVAL;
4103 }
4104 return 0;
4105 }
4106
4107 static int nl80211_set_station_tdls(struct genl_info *info,
4108 struct station_parameters *params)
4109 {
4110 int err;
4111 /* Dummy STA entry gets updated once the peer capabilities are known */
4112 if (info->attrs[NL80211_ATTR_PEER_AID])
4113 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4114 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4115 params->ht_capa =
4116 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4117 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4118 params->vht_capa =
4119 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4120
4121 err = nl80211_parse_sta_channel_info(info, params);
4122 if (err)
4123 return err;
4124
4125 return nl80211_parse_sta_wme(info, params);
4126 }
4127
4128 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4129 {
4130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4131 struct net_device *dev = info->user_ptr[1];
4132 struct station_parameters params;
4133 u8 *mac_addr;
4134 int err;
4135
4136 memset(&params, 0, sizeof(params));
4137
4138 params.listen_interval = -1;
4139
4140 if (!rdev->ops->change_station)
4141 return -EOPNOTSUPP;
4142
4143 if (info->attrs[NL80211_ATTR_STA_AID])
4144 return -EINVAL;
4145
4146 if (!info->attrs[NL80211_ATTR_MAC])
4147 return -EINVAL;
4148
4149 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4150
4151 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4152 params.supported_rates =
4153 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4154 params.supported_rates_len =
4155 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4156 }
4157
4158 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4159 params.capability =
4160 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4161 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4162 }
4163
4164 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4165 params.ext_capab =
4166 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4167 params.ext_capab_len =
4168 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4169 }
4170
4171 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4172 return -EINVAL;
4173
4174 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4175 return -EINVAL;
4176
4177 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4178 params.plink_action =
4179 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4180 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4181 return -EINVAL;
4182 }
4183
4184 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4185 params.plink_state =
4186 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4187 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4188 return -EINVAL;
4189 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4190 }
4191
4192 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4193 enum nl80211_mesh_power_mode pm = nla_get_u32(
4194 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4195
4196 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4197 pm > NL80211_MESH_POWER_MAX)
4198 return -EINVAL;
4199
4200 params.local_pm = pm;
4201 }
4202
4203 /* Include parameters for TDLS peer (will check later) */
4204 err = nl80211_set_station_tdls(info, &params);
4205 if (err)
4206 return err;
4207
4208 params.vlan = get_vlan(info, rdev);
4209 if (IS_ERR(params.vlan))
4210 return PTR_ERR(params.vlan);
4211
4212 switch (dev->ieee80211_ptr->iftype) {
4213 case NL80211_IFTYPE_AP:
4214 case NL80211_IFTYPE_AP_VLAN:
4215 case NL80211_IFTYPE_P2P_GO:
4216 case NL80211_IFTYPE_P2P_CLIENT:
4217 case NL80211_IFTYPE_STATION:
4218 case NL80211_IFTYPE_ADHOC:
4219 case NL80211_IFTYPE_MESH_POINT:
4220 break;
4221 default:
4222 err = -EOPNOTSUPP;
4223 goto out_put_vlan;
4224 }
4225
4226 /* driver will call cfg80211_check_station_change() */
4227 err = rdev_change_station(rdev, dev, mac_addr, &params);
4228
4229 out_put_vlan:
4230 if (params.vlan)
4231 dev_put(params.vlan);
4232
4233 return err;
4234 }
4235
4236 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4237 {
4238 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4239 int err;
4240 struct net_device *dev = info->user_ptr[1];
4241 struct station_parameters params;
4242 u8 *mac_addr = NULL;
4243
4244 memset(&params, 0, sizeof(params));
4245
4246 if (!rdev->ops->add_station)
4247 return -EOPNOTSUPP;
4248
4249 if (!info->attrs[NL80211_ATTR_MAC])
4250 return -EINVAL;
4251
4252 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4253 return -EINVAL;
4254
4255 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4256 return -EINVAL;
4257
4258 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4259 !info->attrs[NL80211_ATTR_PEER_AID])
4260 return -EINVAL;
4261
4262 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4263 params.supported_rates =
4264 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4265 params.supported_rates_len =
4266 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4267 params.listen_interval =
4268 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4269
4270 if (info->attrs[NL80211_ATTR_PEER_AID])
4271 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4272 else
4273 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4274 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4275 return -EINVAL;
4276
4277 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4278 params.capability =
4279 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4280 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4281 }
4282
4283 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4284 params.ext_capab =
4285 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4286 params.ext_capab_len =
4287 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4288 }
4289
4290 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4291 params.ht_capa =
4292 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4293
4294 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4295 params.vht_capa =
4296 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4297
4298 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4299 params.opmode_notif_used = true;
4300 params.opmode_notif =
4301 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4302 }
4303
4304 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4305 params.plink_action =
4306 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4307 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4308 return -EINVAL;
4309 }
4310
4311 err = nl80211_parse_sta_channel_info(info, &params);
4312 if (err)
4313 return err;
4314
4315 err = nl80211_parse_sta_wme(info, &params);
4316 if (err)
4317 return err;
4318
4319 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4320 return -EINVAL;
4321
4322 /* When you run into this, adjust the code below for the new flag */
4323 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4324
4325 switch (dev->ieee80211_ptr->iftype) {
4326 case NL80211_IFTYPE_AP:
4327 case NL80211_IFTYPE_AP_VLAN:
4328 case NL80211_IFTYPE_P2P_GO:
4329 /* ignore WME attributes if iface/sta is not capable */
4330 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4331 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4332 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4333
4334 /* TDLS peers cannot be added */
4335 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4336 info->attrs[NL80211_ATTR_PEER_AID])
4337 return -EINVAL;
4338 /* but don't bother the driver with it */
4339 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4340
4341 /* allow authenticated/associated only if driver handles it */
4342 if (!(rdev->wiphy.features &
4343 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4344 params.sta_flags_mask &
4345 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4346 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4347 return -EINVAL;
4348
4349 /* must be last in here for error handling */
4350 params.vlan = get_vlan(info, rdev);
4351 if (IS_ERR(params.vlan))
4352 return PTR_ERR(params.vlan);
4353 break;
4354 case NL80211_IFTYPE_MESH_POINT:
4355 /* ignore uAPSD data */
4356 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4357
4358 /* associated is disallowed */
4359 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4360 return -EINVAL;
4361 /* TDLS peers cannot be added */
4362 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4363 info->attrs[NL80211_ATTR_PEER_AID])
4364 return -EINVAL;
4365 break;
4366 case NL80211_IFTYPE_STATION:
4367 case NL80211_IFTYPE_P2P_CLIENT:
4368 /* ignore uAPSD data */
4369 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4370
4371 /* these are disallowed */
4372 if (params.sta_flags_mask &
4373 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4374 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4375 return -EINVAL;
4376 /* Only TDLS peers can be added */
4377 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4378 return -EINVAL;
4379 /* Can only add if TDLS ... */
4380 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4381 return -EOPNOTSUPP;
4382 /* ... with external setup is supported */
4383 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4384 return -EOPNOTSUPP;
4385 /*
4386 * Older wpa_supplicant versions always mark the TDLS peer
4387 * as authorized, but it shouldn't yet be.
4388 */
4389 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4390 break;
4391 default:
4392 return -EOPNOTSUPP;
4393 }
4394
4395 /* be aware of params.vlan when changing code here */
4396
4397 err = rdev_add_station(rdev, dev, mac_addr, &params);
4398
4399 if (params.vlan)
4400 dev_put(params.vlan);
4401 return err;
4402 }
4403
4404 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4405 {
4406 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4407 struct net_device *dev = info->user_ptr[1];
4408 struct station_del_parameters params;
4409
4410 memset(&params, 0, sizeof(params));
4411
4412 if (info->attrs[NL80211_ATTR_MAC])
4413 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4414
4415 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4416 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4417 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4418 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4419 return -EINVAL;
4420
4421 if (!rdev->ops->del_station)
4422 return -EOPNOTSUPP;
4423
4424 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4425 params.subtype =
4426 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4427 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4428 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4429 return -EINVAL;
4430 } else {
4431 /* Default to Deauthentication frame */
4432 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4433 }
4434
4435 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4436 params.reason_code =
4437 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4438 if (params.reason_code == 0)
4439 return -EINVAL; /* 0 is reserved */
4440 } else {
4441 /* Default to reason code 2 */
4442 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4443 }
4444
4445 return rdev_del_station(rdev, dev, &params);
4446 }
4447
4448 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4449 int flags, struct net_device *dev,
4450 u8 *dst, u8 *next_hop,
4451 struct mpath_info *pinfo)
4452 {
4453 void *hdr;
4454 struct nlattr *pinfoattr;
4455
4456 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4457 if (!hdr)
4458 return -1;
4459
4460 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4461 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4462 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4463 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4464 goto nla_put_failure;
4465
4466 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4467 if (!pinfoattr)
4468 goto nla_put_failure;
4469 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4470 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4471 pinfo->frame_qlen))
4472 goto nla_put_failure;
4473 if (((pinfo->filled & MPATH_INFO_SN) &&
4474 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4475 ((pinfo->filled & MPATH_INFO_METRIC) &&
4476 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4477 pinfo->metric)) ||
4478 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4479 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4480 pinfo->exptime)) ||
4481 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4482 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4483 pinfo->flags)) ||
4484 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4485 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4486 pinfo->discovery_timeout)) ||
4487 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4488 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4489 pinfo->discovery_retries)))
4490 goto nla_put_failure;
4491
4492 nla_nest_end(msg, pinfoattr);
4493
4494 return genlmsg_end(msg, hdr);
4495
4496 nla_put_failure:
4497 genlmsg_cancel(msg, hdr);
4498 return -EMSGSIZE;
4499 }
4500
4501 static int nl80211_dump_mpath(struct sk_buff *skb,
4502 struct netlink_callback *cb)
4503 {
4504 struct mpath_info pinfo;
4505 struct cfg80211_registered_device *rdev;
4506 struct wireless_dev *wdev;
4507 u8 dst[ETH_ALEN];
4508 u8 next_hop[ETH_ALEN];
4509 int path_idx = cb->args[2];
4510 int err;
4511
4512 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4513 if (err)
4514 return err;
4515
4516 if (!rdev->ops->dump_mpath) {
4517 err = -EOPNOTSUPP;
4518 goto out_err;
4519 }
4520
4521 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4522 err = -EOPNOTSUPP;
4523 goto out_err;
4524 }
4525
4526 while (1) {
4527 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4528 next_hop, &pinfo);
4529 if (err == -ENOENT)
4530 break;
4531 if (err)
4532 goto out_err;
4533
4534 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4535 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4536 wdev->netdev, dst, next_hop,
4537 &pinfo) < 0)
4538 goto out;
4539
4540 path_idx++;
4541 }
4542
4543
4544 out:
4545 cb->args[2] = path_idx;
4546 err = skb->len;
4547 out_err:
4548 nl80211_finish_wdev_dump(rdev);
4549 return err;
4550 }
4551
4552 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4553 {
4554 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4555 int err;
4556 struct net_device *dev = info->user_ptr[1];
4557 struct mpath_info pinfo;
4558 struct sk_buff *msg;
4559 u8 *dst = NULL;
4560 u8 next_hop[ETH_ALEN];
4561
4562 memset(&pinfo, 0, sizeof(pinfo));
4563
4564 if (!info->attrs[NL80211_ATTR_MAC])
4565 return -EINVAL;
4566
4567 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4568
4569 if (!rdev->ops->get_mpath)
4570 return -EOPNOTSUPP;
4571
4572 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4573 return -EOPNOTSUPP;
4574
4575 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4576 if (err)
4577 return err;
4578
4579 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4580 if (!msg)
4581 return -ENOMEM;
4582
4583 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4584 dev, dst, next_hop, &pinfo) < 0) {
4585 nlmsg_free(msg);
4586 return -ENOBUFS;
4587 }
4588
4589 return genlmsg_reply(msg, info);
4590 }
4591
4592 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4593 {
4594 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4595 struct net_device *dev = info->user_ptr[1];
4596 u8 *dst = NULL;
4597 u8 *next_hop = NULL;
4598
4599 if (!info->attrs[NL80211_ATTR_MAC])
4600 return -EINVAL;
4601
4602 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4603 return -EINVAL;
4604
4605 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4606 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4607
4608 if (!rdev->ops->change_mpath)
4609 return -EOPNOTSUPP;
4610
4611 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4612 return -EOPNOTSUPP;
4613
4614 return rdev_change_mpath(rdev, dev, dst, next_hop);
4615 }
4616
4617 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4618 {
4619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4620 struct net_device *dev = info->user_ptr[1];
4621 u8 *dst = NULL;
4622 u8 *next_hop = NULL;
4623
4624 if (!info->attrs[NL80211_ATTR_MAC])
4625 return -EINVAL;
4626
4627 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4628 return -EINVAL;
4629
4630 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4631 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4632
4633 if (!rdev->ops->add_mpath)
4634 return -EOPNOTSUPP;
4635
4636 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4637 return -EOPNOTSUPP;
4638
4639 return rdev_add_mpath(rdev, dev, dst, next_hop);
4640 }
4641
4642 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4643 {
4644 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4645 struct net_device *dev = info->user_ptr[1];
4646 u8 *dst = NULL;
4647
4648 if (info->attrs[NL80211_ATTR_MAC])
4649 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4650
4651 if (!rdev->ops->del_mpath)
4652 return -EOPNOTSUPP;
4653
4654 return rdev_del_mpath(rdev, dev, dst);
4655 }
4656
4657 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4658 {
4659 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4660 int err;
4661 struct net_device *dev = info->user_ptr[1];
4662 struct mpath_info pinfo;
4663 struct sk_buff *msg;
4664 u8 *dst = NULL;
4665 u8 mpp[ETH_ALEN];
4666
4667 memset(&pinfo, 0, sizeof(pinfo));
4668
4669 if (!info->attrs[NL80211_ATTR_MAC])
4670 return -EINVAL;
4671
4672 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4673
4674 if (!rdev->ops->get_mpp)
4675 return -EOPNOTSUPP;
4676
4677 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4678 return -EOPNOTSUPP;
4679
4680 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4681 if (err)
4682 return err;
4683
4684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4685 if (!msg)
4686 return -ENOMEM;
4687
4688 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4689 dev, dst, mpp, &pinfo) < 0) {
4690 nlmsg_free(msg);
4691 return -ENOBUFS;
4692 }
4693
4694 return genlmsg_reply(msg, info);
4695 }
4696
4697 static int nl80211_dump_mpp(struct sk_buff *skb,
4698 struct netlink_callback *cb)
4699 {
4700 struct mpath_info pinfo;
4701 struct cfg80211_registered_device *rdev;
4702 struct wireless_dev *wdev;
4703 u8 dst[ETH_ALEN];
4704 u8 mpp[ETH_ALEN];
4705 int path_idx = cb->args[2];
4706 int err;
4707
4708 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4709 if (err)
4710 return err;
4711
4712 if (!rdev->ops->dump_mpp) {
4713 err = -EOPNOTSUPP;
4714 goto out_err;
4715 }
4716
4717 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4718 err = -EOPNOTSUPP;
4719 goto out_err;
4720 }
4721
4722 while (1) {
4723 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4724 mpp, &pinfo);
4725 if (err == -ENOENT)
4726 break;
4727 if (err)
4728 goto out_err;
4729
4730 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4731 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4732 wdev->netdev, dst, mpp,
4733 &pinfo) < 0)
4734 goto out;
4735
4736 path_idx++;
4737 }
4738
4739 out:
4740 cb->args[2] = path_idx;
4741 err = skb->len;
4742 out_err:
4743 nl80211_finish_wdev_dump(rdev);
4744 return err;
4745 }
4746
4747 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4748 {
4749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4750 struct net_device *dev = info->user_ptr[1];
4751 struct wireless_dev *wdev = dev->ieee80211_ptr;
4752 struct bss_parameters params;
4753 int err;
4754
4755 memset(&params, 0, sizeof(params));
4756 /* default to not changing parameters */
4757 params.use_cts_prot = -1;
4758 params.use_short_preamble = -1;
4759 params.use_short_slot_time = -1;
4760 params.ap_isolate = -1;
4761 params.ht_opmode = -1;
4762 params.p2p_ctwindow = -1;
4763 params.p2p_opp_ps = -1;
4764
4765 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4766 params.use_cts_prot =
4767 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4768 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4769 params.use_short_preamble =
4770 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4771 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4772 params.use_short_slot_time =
4773 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4774 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4775 params.basic_rates =
4776 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4777 params.basic_rates_len =
4778 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4779 }
4780 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4781 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4782 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4783 params.ht_opmode =
4784 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4785
4786 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4787 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4788 return -EINVAL;
4789 params.p2p_ctwindow =
4790 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4791 if (params.p2p_ctwindow < 0)
4792 return -EINVAL;
4793 if (params.p2p_ctwindow != 0 &&
4794 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4795 return -EINVAL;
4796 }
4797
4798 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4799 u8 tmp;
4800
4801 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4802 return -EINVAL;
4803 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4804 if (tmp > 1)
4805 return -EINVAL;
4806 params.p2p_opp_ps = tmp;
4807 if (params.p2p_opp_ps &&
4808 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4809 return -EINVAL;
4810 }
4811
4812 if (!rdev->ops->change_bss)
4813 return -EOPNOTSUPP;
4814
4815 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4816 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4817 return -EOPNOTSUPP;
4818
4819 wdev_lock(wdev);
4820 err = rdev_change_bss(rdev, dev, &params);
4821 wdev_unlock(wdev);
4822
4823 return err;
4824 }
4825
4826 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4827 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4828 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4829 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4830 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4831 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4832 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4833 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4834 };
4835
4836 static int parse_reg_rule(struct nlattr *tb[],
4837 struct ieee80211_reg_rule *reg_rule)
4838 {
4839 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4840 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4841
4842 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4843 return -EINVAL;
4844 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4845 return -EINVAL;
4846 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4847 return -EINVAL;
4848 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4849 return -EINVAL;
4850 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4851 return -EINVAL;
4852
4853 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4854
4855 freq_range->start_freq_khz =
4856 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4857 freq_range->end_freq_khz =
4858 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4859 freq_range->max_bandwidth_khz =
4860 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4861
4862 power_rule->max_eirp =
4863 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4864
4865 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4866 power_rule->max_antenna_gain =
4867 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4868
4869 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4870 reg_rule->dfs_cac_ms =
4871 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4872
4873 return 0;
4874 }
4875
4876 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4877 {
4878 char *data = NULL;
4879 enum nl80211_user_reg_hint_type user_reg_hint_type;
4880
4881 /*
4882 * You should only get this when cfg80211 hasn't yet initialized
4883 * completely when built-in to the kernel right between the time
4884 * window between nl80211_init() and regulatory_init(), if that is
4885 * even possible.
4886 */
4887 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4888 return -EINPROGRESS;
4889
4890 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4891 user_reg_hint_type =
4892 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4893 else
4894 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4895
4896 switch (user_reg_hint_type) {
4897 case NL80211_USER_REG_HINT_USER:
4898 case NL80211_USER_REG_HINT_CELL_BASE:
4899 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4900 return -EINVAL;
4901
4902 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4903 return regulatory_hint_user(data, user_reg_hint_type);
4904 case NL80211_USER_REG_HINT_INDOOR:
4905 return regulatory_hint_indoor_user();
4906 default:
4907 return -EINVAL;
4908 }
4909 }
4910
4911 static int nl80211_get_mesh_config(struct sk_buff *skb,
4912 struct genl_info *info)
4913 {
4914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4915 struct net_device *dev = info->user_ptr[1];
4916 struct wireless_dev *wdev = dev->ieee80211_ptr;
4917 struct mesh_config cur_params;
4918 int err = 0;
4919 void *hdr;
4920 struct nlattr *pinfoattr;
4921 struct sk_buff *msg;
4922
4923 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4924 return -EOPNOTSUPP;
4925
4926 if (!rdev->ops->get_mesh_config)
4927 return -EOPNOTSUPP;
4928
4929 wdev_lock(wdev);
4930 /* If not connected, get default parameters */
4931 if (!wdev->mesh_id_len)
4932 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4933 else
4934 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4935 wdev_unlock(wdev);
4936
4937 if (err)
4938 return err;
4939
4940 /* Draw up a netlink message to send back */
4941 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4942 if (!msg)
4943 return -ENOMEM;
4944 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4945 NL80211_CMD_GET_MESH_CONFIG);
4946 if (!hdr)
4947 goto out;
4948 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4949 if (!pinfoattr)
4950 goto nla_put_failure;
4951 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4952 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4953 cur_params.dot11MeshRetryTimeout) ||
4954 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4955 cur_params.dot11MeshConfirmTimeout) ||
4956 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4957 cur_params.dot11MeshHoldingTimeout) ||
4958 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4959 cur_params.dot11MeshMaxPeerLinks) ||
4960 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4961 cur_params.dot11MeshMaxRetries) ||
4962 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4963 cur_params.dot11MeshTTL) ||
4964 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4965 cur_params.element_ttl) ||
4966 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4967 cur_params.auto_open_plinks) ||
4968 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4969 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4970 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4971 cur_params.dot11MeshHWMPmaxPREQretries) ||
4972 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4973 cur_params.path_refresh_time) ||
4974 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4975 cur_params.min_discovery_timeout) ||
4976 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4977 cur_params.dot11MeshHWMPactivePathTimeout) ||
4978 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4979 cur_params.dot11MeshHWMPpreqMinInterval) ||
4980 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4981 cur_params.dot11MeshHWMPperrMinInterval) ||
4982 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4983 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4984 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4985 cur_params.dot11MeshHWMPRootMode) ||
4986 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4987 cur_params.dot11MeshHWMPRannInterval) ||
4988 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4989 cur_params.dot11MeshGateAnnouncementProtocol) ||
4990 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4991 cur_params.dot11MeshForwarding) ||
4992 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4993 cur_params.rssi_threshold) ||
4994 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4995 cur_params.ht_opmode) ||
4996 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4997 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4998 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4999 cur_params.dot11MeshHWMProotInterval) ||
5000 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5001 cur_params.dot11MeshHWMPconfirmationInterval) ||
5002 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5003 cur_params.power_mode) ||
5004 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5005 cur_params.dot11MeshAwakeWindowDuration) ||
5006 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5007 cur_params.plink_timeout))
5008 goto nla_put_failure;
5009 nla_nest_end(msg, pinfoattr);
5010 genlmsg_end(msg, hdr);
5011 return genlmsg_reply(msg, info);
5012
5013 nla_put_failure:
5014 genlmsg_cancel(msg, hdr);
5015 out:
5016 nlmsg_free(msg);
5017 return -ENOBUFS;
5018 }
5019
5020 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5021 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5022 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5023 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5024 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5025 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5026 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5027 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5028 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5029 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5030 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5031 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5032 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5033 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5034 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5035 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5036 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5037 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5038 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5039 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5040 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5041 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5042 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5043 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5044 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5045 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5046 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5047 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5048 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5049 };
5050
5051 static const struct nla_policy
5052 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5053 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5054 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5055 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5056 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5057 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5058 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5059 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5060 .len = IEEE80211_MAX_DATA_LEN },
5061 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5062 };
5063
5064 static int nl80211_parse_mesh_config(struct genl_info *info,
5065 struct mesh_config *cfg,
5066 u32 *mask_out)
5067 {
5068 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5069 u32 mask = 0;
5070
5071 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5072 do { \
5073 if (tb[attr]) { \
5074 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5075 return -EINVAL; \
5076 cfg->param = fn(tb[attr]); \
5077 mask |= (1 << (attr - 1)); \
5078 } \
5079 } while (0)
5080
5081
5082 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5083 return -EINVAL;
5084 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5085 info->attrs[NL80211_ATTR_MESH_CONFIG],
5086 nl80211_meshconf_params_policy))
5087 return -EINVAL;
5088
5089 /* This makes sure that there aren't more than 32 mesh config
5090 * parameters (otherwise our bitfield scheme would not work.) */
5091 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5092
5093 /* Fill in the params struct */
5094 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5095 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5096 nla_get_u16);
5097 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5098 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5099 nla_get_u16);
5100 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5101 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5102 nla_get_u16);
5103 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5104 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5105 nla_get_u16);
5106 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5107 mask, NL80211_MESHCONF_MAX_RETRIES,
5108 nla_get_u8);
5109 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5110 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5111 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5112 mask, NL80211_MESHCONF_ELEMENT_TTL,
5113 nla_get_u8);
5114 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5115 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5116 nla_get_u8);
5117 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5118 1, 255, mask,
5119 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5120 nla_get_u32);
5121 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5122 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5123 nla_get_u8);
5124 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5125 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5126 nla_get_u32);
5127 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5128 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5129 nla_get_u16);
5130 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5131 1, 65535, mask,
5132 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5133 nla_get_u32);
5134 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5135 1, 65535, mask,
5136 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5137 nla_get_u16);
5138 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5139 1, 65535, mask,
5140 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5141 nla_get_u16);
5142 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5143 dot11MeshHWMPnetDiameterTraversalTime,
5144 1, 65535, mask,
5145 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5146 nla_get_u16);
5147 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5148 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5149 nla_get_u8);
5150 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5151 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5152 nla_get_u16);
5153 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5154 dot11MeshGateAnnouncementProtocol, 0, 1,
5155 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5156 nla_get_u8);
5157 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5158 mask, NL80211_MESHCONF_FORWARDING,
5159 nla_get_u8);
5160 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5161 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5162 nla_get_s32);
5163 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5164 mask, NL80211_MESHCONF_HT_OPMODE,
5165 nla_get_u16);
5166 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5167 1, 65535, mask,
5168 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5169 nla_get_u32);
5170 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5171 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5172 nla_get_u16);
5173 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5174 dot11MeshHWMPconfirmationInterval,
5175 1, 65535, mask,
5176 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5177 nla_get_u16);
5178 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5179 NL80211_MESH_POWER_ACTIVE,
5180 NL80211_MESH_POWER_MAX,
5181 mask, NL80211_MESHCONF_POWER_MODE,
5182 nla_get_u32);
5183 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5184 0, 65535, mask,
5185 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5186 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5187 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5188 nla_get_u32);
5189 if (mask_out)
5190 *mask_out = mask;
5191
5192 return 0;
5193
5194 #undef FILL_IN_MESH_PARAM_IF_SET
5195 }
5196
5197 static int nl80211_parse_mesh_setup(struct genl_info *info,
5198 struct mesh_setup *setup)
5199 {
5200 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5201 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5202
5203 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5204 return -EINVAL;
5205 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5206 info->attrs[NL80211_ATTR_MESH_SETUP],
5207 nl80211_mesh_setup_params_policy))
5208 return -EINVAL;
5209
5210 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5211 setup->sync_method =
5212 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5213 IEEE80211_SYNC_METHOD_VENDOR :
5214 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5215
5216 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5217 setup->path_sel_proto =
5218 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5219 IEEE80211_PATH_PROTOCOL_VENDOR :
5220 IEEE80211_PATH_PROTOCOL_HWMP;
5221
5222 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5223 setup->path_metric =
5224 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5225 IEEE80211_PATH_METRIC_VENDOR :
5226 IEEE80211_PATH_METRIC_AIRTIME;
5227
5228
5229 if (tb[NL80211_MESH_SETUP_IE]) {
5230 struct nlattr *ieattr =
5231 tb[NL80211_MESH_SETUP_IE];
5232 if (!is_valid_ie_attr(ieattr))
5233 return -EINVAL;
5234 setup->ie = nla_data(ieattr);
5235 setup->ie_len = nla_len(ieattr);
5236 }
5237 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5238 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5239 return -EINVAL;
5240 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5241 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5242 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5243 if (setup->is_secure)
5244 setup->user_mpm = true;
5245
5246 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5247 if (!setup->user_mpm)
5248 return -EINVAL;
5249 setup->auth_id =
5250 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5251 }
5252
5253 return 0;
5254 }
5255
5256 static int nl80211_update_mesh_config(struct sk_buff *skb,
5257 struct genl_info *info)
5258 {
5259 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5260 struct net_device *dev = info->user_ptr[1];
5261 struct wireless_dev *wdev = dev->ieee80211_ptr;
5262 struct mesh_config cfg;
5263 u32 mask;
5264 int err;
5265
5266 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5267 return -EOPNOTSUPP;
5268
5269 if (!rdev->ops->update_mesh_config)
5270 return -EOPNOTSUPP;
5271
5272 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5273 if (err)
5274 return err;
5275
5276 wdev_lock(wdev);
5277 if (!wdev->mesh_id_len)
5278 err = -ENOLINK;
5279
5280 if (!err)
5281 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5282
5283 wdev_unlock(wdev);
5284
5285 return err;
5286 }
5287
5288 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5289 {
5290 const struct ieee80211_regdomain *regdom;
5291 struct sk_buff *msg;
5292 void *hdr = NULL;
5293 struct nlattr *nl_reg_rules;
5294 unsigned int i;
5295
5296 if (!cfg80211_regdomain)
5297 return -EINVAL;
5298
5299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5300 if (!msg)
5301 return -ENOBUFS;
5302
5303 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5304 NL80211_CMD_GET_REG);
5305 if (!hdr)
5306 goto put_failure;
5307
5308 if (reg_last_request_cell_base() &&
5309 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5310 NL80211_USER_REG_HINT_CELL_BASE))
5311 goto nla_put_failure;
5312
5313 rcu_read_lock();
5314 regdom = rcu_dereference(cfg80211_regdomain);
5315
5316 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5317 (regdom->dfs_region &&
5318 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5319 goto nla_put_failure_rcu;
5320
5321 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5322 if (!nl_reg_rules)
5323 goto nla_put_failure_rcu;
5324
5325 for (i = 0; i < regdom->n_reg_rules; i++) {
5326 struct nlattr *nl_reg_rule;
5327 const struct ieee80211_reg_rule *reg_rule;
5328 const struct ieee80211_freq_range *freq_range;
5329 const struct ieee80211_power_rule *power_rule;
5330 unsigned int max_bandwidth_khz;
5331
5332 reg_rule = &regdom->reg_rules[i];
5333 freq_range = &reg_rule->freq_range;
5334 power_rule = &reg_rule->power_rule;
5335
5336 nl_reg_rule = nla_nest_start(msg, i);
5337 if (!nl_reg_rule)
5338 goto nla_put_failure_rcu;
5339
5340 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5341 if (!max_bandwidth_khz)
5342 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5343 reg_rule);
5344
5345 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5346 reg_rule->flags) ||
5347 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5348 freq_range->start_freq_khz) ||
5349 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5350 freq_range->end_freq_khz) ||
5351 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5352 max_bandwidth_khz) ||
5353 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5354 power_rule->max_antenna_gain) ||
5355 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5356 power_rule->max_eirp) ||
5357 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5358 reg_rule->dfs_cac_ms))
5359 goto nla_put_failure_rcu;
5360
5361 nla_nest_end(msg, nl_reg_rule);
5362 }
5363 rcu_read_unlock();
5364
5365 nla_nest_end(msg, nl_reg_rules);
5366
5367 genlmsg_end(msg, hdr);
5368 return genlmsg_reply(msg, info);
5369
5370 nla_put_failure_rcu:
5371 rcu_read_unlock();
5372 nla_put_failure:
5373 genlmsg_cancel(msg, hdr);
5374 put_failure:
5375 nlmsg_free(msg);
5376 return -EMSGSIZE;
5377 }
5378
5379 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5380 {
5381 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5382 struct nlattr *nl_reg_rule;
5383 char *alpha2 = NULL;
5384 int rem_reg_rules = 0, r = 0;
5385 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5386 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5387 struct ieee80211_regdomain *rd = NULL;
5388
5389 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5390 return -EINVAL;
5391
5392 if (!info->attrs[NL80211_ATTR_REG_RULES])
5393 return -EINVAL;
5394
5395 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5396
5397 if (info->attrs[NL80211_ATTR_DFS_REGION])
5398 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5399
5400 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5401 rem_reg_rules) {
5402 num_rules++;
5403 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5404 return -EINVAL;
5405 }
5406
5407 if (!reg_is_valid_request(alpha2))
5408 return -EINVAL;
5409
5410 size_of_regd = sizeof(struct ieee80211_regdomain) +
5411 num_rules * sizeof(struct ieee80211_reg_rule);
5412
5413 rd = kzalloc(size_of_regd, GFP_KERNEL);
5414 if (!rd)
5415 return -ENOMEM;
5416
5417 rd->n_reg_rules = num_rules;
5418 rd->alpha2[0] = alpha2[0];
5419 rd->alpha2[1] = alpha2[1];
5420
5421 /*
5422 * Disable DFS master mode if the DFS region was
5423 * not supported or known on this kernel.
5424 */
5425 if (reg_supported_dfs_region(dfs_region))
5426 rd->dfs_region = dfs_region;
5427
5428 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5429 rem_reg_rules) {
5430 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5431 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5432 reg_rule_policy);
5433 if (r)
5434 goto bad_reg;
5435 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5436 if (r)
5437 goto bad_reg;
5438
5439 rule_idx++;
5440
5441 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5442 r = -EINVAL;
5443 goto bad_reg;
5444 }
5445 }
5446
5447 r = set_regdom(rd);
5448 /* set_regdom took ownership */
5449 rd = NULL;
5450
5451 bad_reg:
5452 kfree(rd);
5453 return r;
5454 }
5455
5456 static int validate_scan_freqs(struct nlattr *freqs)
5457 {
5458 struct nlattr *attr1, *attr2;
5459 int n_channels = 0, tmp1, tmp2;
5460
5461 nla_for_each_nested(attr1, freqs, tmp1) {
5462 n_channels++;
5463 /*
5464 * Some hardware has a limited channel list for
5465 * scanning, and it is pretty much nonsensical
5466 * to scan for a channel twice, so disallow that
5467 * and don't require drivers to check that the
5468 * channel list they get isn't longer than what
5469 * they can scan, as long as they can scan all
5470 * the channels they registered at once.
5471 */
5472 nla_for_each_nested(attr2, freqs, tmp2)
5473 if (attr1 != attr2 &&
5474 nla_get_u32(attr1) == nla_get_u32(attr2))
5475 return 0;
5476 }
5477
5478 return n_channels;
5479 }
5480
5481 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5482 {
5483 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5484 struct wireless_dev *wdev = info->user_ptr[1];
5485 struct cfg80211_scan_request *request;
5486 struct nlattr *attr;
5487 struct wiphy *wiphy;
5488 int err, tmp, n_ssids = 0, n_channels, i;
5489 size_t ie_len;
5490
5491 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5492 return -EINVAL;
5493
5494 wiphy = &rdev->wiphy;
5495
5496 if (!rdev->ops->scan)
5497 return -EOPNOTSUPP;
5498
5499 if (rdev->scan_req || rdev->scan_msg) {
5500 err = -EBUSY;
5501 goto unlock;
5502 }
5503
5504 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5505 n_channels = validate_scan_freqs(
5506 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5507 if (!n_channels) {
5508 err = -EINVAL;
5509 goto unlock;
5510 }
5511 } else {
5512 n_channels = ieee80211_get_num_supported_channels(wiphy);
5513 }
5514
5515 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5516 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5517 n_ssids++;
5518
5519 if (n_ssids > wiphy->max_scan_ssids) {
5520 err = -EINVAL;
5521 goto unlock;
5522 }
5523
5524 if (info->attrs[NL80211_ATTR_IE])
5525 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5526 else
5527 ie_len = 0;
5528
5529 if (ie_len > wiphy->max_scan_ie_len) {
5530 err = -EINVAL;
5531 goto unlock;
5532 }
5533
5534 request = kzalloc(sizeof(*request)
5535 + sizeof(*request->ssids) * n_ssids
5536 + sizeof(*request->channels) * n_channels
5537 + ie_len, GFP_KERNEL);
5538 if (!request) {
5539 err = -ENOMEM;
5540 goto unlock;
5541 }
5542
5543 if (n_ssids)
5544 request->ssids = (void *)&request->channels[n_channels];
5545 request->n_ssids = n_ssids;
5546 if (ie_len) {
5547 if (request->ssids)
5548 request->ie = (void *)(request->ssids + n_ssids);
5549 else
5550 request->ie = (void *)(request->channels + n_channels);
5551 }
5552
5553 i = 0;
5554 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5555 /* user specified, bail out if channel not found */
5556 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5557 struct ieee80211_channel *chan;
5558
5559 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5560
5561 if (!chan) {
5562 err = -EINVAL;
5563 goto out_free;
5564 }
5565
5566 /* ignore disabled channels */
5567 if (chan->flags & IEEE80211_CHAN_DISABLED)
5568 continue;
5569
5570 request->channels[i] = chan;
5571 i++;
5572 }
5573 } else {
5574 enum ieee80211_band band;
5575
5576 /* all channels */
5577 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5578 int j;
5579 if (!wiphy->bands[band])
5580 continue;
5581 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5582 struct ieee80211_channel *chan;
5583
5584 chan = &wiphy->bands[band]->channels[j];
5585
5586 if (chan->flags & IEEE80211_CHAN_DISABLED)
5587 continue;
5588
5589 request->channels[i] = chan;
5590 i++;
5591 }
5592 }
5593 }
5594
5595 if (!i) {
5596 err = -EINVAL;
5597 goto out_free;
5598 }
5599
5600 request->n_channels = i;
5601
5602 i = 0;
5603 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5604 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5605 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5606 err = -EINVAL;
5607 goto out_free;
5608 }
5609 request->ssids[i].ssid_len = nla_len(attr);
5610 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5611 i++;
5612 }
5613 }
5614
5615 if (info->attrs[NL80211_ATTR_IE]) {
5616 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5617 memcpy((void *)request->ie,
5618 nla_data(info->attrs[NL80211_ATTR_IE]),
5619 request->ie_len);
5620 }
5621
5622 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5623 if (wiphy->bands[i])
5624 request->rates[i] =
5625 (1 << wiphy->bands[i]->n_bitrates) - 1;
5626
5627 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5628 nla_for_each_nested(attr,
5629 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5630 tmp) {
5631 enum ieee80211_band band = nla_type(attr);
5632
5633 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5634 err = -EINVAL;
5635 goto out_free;
5636 }
5637
5638 if (!wiphy->bands[band])
5639 continue;
5640
5641 err = ieee80211_get_ratemask(wiphy->bands[band],
5642 nla_data(attr),
5643 nla_len(attr),
5644 &request->rates[band]);
5645 if (err)
5646 goto out_free;
5647 }
5648 }
5649
5650 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5651 request->flags = nla_get_u32(
5652 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5653 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5654 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5655 err = -EOPNOTSUPP;
5656 goto out_free;
5657 }
5658 }
5659
5660 request->no_cck =
5661 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5662
5663 request->wdev = wdev;
5664 request->wiphy = &rdev->wiphy;
5665 request->scan_start = jiffies;
5666
5667 rdev->scan_req = request;
5668 err = rdev_scan(rdev, request);
5669
5670 if (!err) {
5671 nl80211_send_scan_start(rdev, wdev);
5672 if (wdev->netdev)
5673 dev_hold(wdev->netdev);
5674 } else {
5675 out_free:
5676 rdev->scan_req = NULL;
5677 kfree(request);
5678 }
5679
5680 unlock:
5681 return err;
5682 }
5683
5684 static int nl80211_start_sched_scan(struct sk_buff *skb,
5685 struct genl_info *info)
5686 {
5687 struct cfg80211_sched_scan_request *request;
5688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5689 struct net_device *dev = info->user_ptr[1];
5690 struct nlattr *attr;
5691 struct wiphy *wiphy;
5692 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5693 u32 interval;
5694 enum ieee80211_band band;
5695 size_t ie_len;
5696 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5697 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5698
5699 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5700 !rdev->ops->sched_scan_start)
5701 return -EOPNOTSUPP;
5702
5703 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5704 return -EINVAL;
5705
5706 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5707 return -EINVAL;
5708
5709 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5710 if (interval == 0)
5711 return -EINVAL;
5712
5713 wiphy = &rdev->wiphy;
5714
5715 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5716 n_channels = validate_scan_freqs(
5717 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5718 if (!n_channels)
5719 return -EINVAL;
5720 } else {
5721 n_channels = ieee80211_get_num_supported_channels(wiphy);
5722 }
5723
5724 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5725 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5726 tmp)
5727 n_ssids++;
5728
5729 if (n_ssids > wiphy->max_sched_scan_ssids)
5730 return -EINVAL;
5731
5732 /*
5733 * First, count the number of 'real' matchsets. Due to an issue with
5734 * the old implementation, matchsets containing only the RSSI attribute
5735 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5736 * RSSI for all matchsets, rather than their own matchset for reporting
5737 * all APs with a strong RSSI. This is needed to be compatible with
5738 * older userspace that treated a matchset with only the RSSI as the
5739 * global RSSI for all other matchsets - if there are other matchsets.
5740 */
5741 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5742 nla_for_each_nested(attr,
5743 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5744 tmp) {
5745 struct nlattr *rssi;
5746
5747 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5748 nla_data(attr), nla_len(attr),
5749 nl80211_match_policy);
5750 if (err)
5751 return err;
5752 /* add other standalone attributes here */
5753 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5754 n_match_sets++;
5755 continue;
5756 }
5757 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5758 if (rssi)
5759 default_match_rssi = nla_get_s32(rssi);
5760 }
5761 }
5762
5763 /* However, if there's no other matchset, add the RSSI one */
5764 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5765 n_match_sets = 1;
5766
5767 if (n_match_sets > wiphy->max_match_sets)
5768 return -EINVAL;
5769
5770 if (info->attrs[NL80211_ATTR_IE])
5771 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5772 else
5773 ie_len = 0;
5774
5775 if (ie_len > wiphy->max_sched_scan_ie_len)
5776 return -EINVAL;
5777
5778 if (rdev->sched_scan_req) {
5779 err = -EINPROGRESS;
5780 goto out;
5781 }
5782
5783 request = kzalloc(sizeof(*request)
5784 + sizeof(*request->ssids) * n_ssids
5785 + sizeof(*request->match_sets) * n_match_sets
5786 + sizeof(*request->channels) * n_channels
5787 + ie_len, GFP_KERNEL);
5788 if (!request) {
5789 err = -ENOMEM;
5790 goto out;
5791 }
5792
5793 if (n_ssids)
5794 request->ssids = (void *)&request->channels[n_channels];
5795 request->n_ssids = n_ssids;
5796 if (ie_len) {
5797 if (request->ssids)
5798 request->ie = (void *)(request->ssids + n_ssids);
5799 else
5800 request->ie = (void *)(request->channels + n_channels);
5801 }
5802
5803 if (n_match_sets) {
5804 if (request->ie)
5805 request->match_sets = (void *)(request->ie + ie_len);
5806 else if (request->ssids)
5807 request->match_sets =
5808 (void *)(request->ssids + n_ssids);
5809 else
5810 request->match_sets =
5811 (void *)(request->channels + n_channels);
5812 }
5813 request->n_match_sets = n_match_sets;
5814
5815 i = 0;
5816 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5817 /* user specified, bail out if channel not found */
5818 nla_for_each_nested(attr,
5819 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5820 tmp) {
5821 struct ieee80211_channel *chan;
5822
5823 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5824
5825 if (!chan) {
5826 err = -EINVAL;
5827 goto out_free;
5828 }
5829
5830 /* ignore disabled channels */
5831 if (chan->flags & IEEE80211_CHAN_DISABLED)
5832 continue;
5833
5834 request->channels[i] = chan;
5835 i++;
5836 }
5837 } else {
5838 /* all channels */
5839 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5840 int j;
5841 if (!wiphy->bands[band])
5842 continue;
5843 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5844 struct ieee80211_channel *chan;
5845
5846 chan = &wiphy->bands[band]->channels[j];
5847
5848 if (chan->flags & IEEE80211_CHAN_DISABLED)
5849 continue;
5850
5851 request->channels[i] = chan;
5852 i++;
5853 }
5854 }
5855 }
5856
5857 if (!i) {
5858 err = -EINVAL;
5859 goto out_free;
5860 }
5861
5862 request->n_channels = i;
5863
5864 i = 0;
5865 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5866 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5867 tmp) {
5868 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5869 err = -EINVAL;
5870 goto out_free;
5871 }
5872 request->ssids[i].ssid_len = nla_len(attr);
5873 memcpy(request->ssids[i].ssid, nla_data(attr),
5874 nla_len(attr));
5875 i++;
5876 }
5877 }
5878
5879 i = 0;
5880 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5881 nla_for_each_nested(attr,
5882 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5883 tmp) {
5884 struct nlattr *ssid, *rssi;
5885
5886 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5887 nla_data(attr), nla_len(attr),
5888 nl80211_match_policy);
5889 if (err)
5890 goto out_free;
5891 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5892 if (ssid) {
5893 if (WARN_ON(i >= n_match_sets)) {
5894 /* this indicates a programming error,
5895 * the loop above should have verified
5896 * things properly
5897 */
5898 err = -EINVAL;
5899 goto out_free;
5900 }
5901
5902 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5903 err = -EINVAL;
5904 goto out_free;
5905 }
5906 memcpy(request->match_sets[i].ssid.ssid,
5907 nla_data(ssid), nla_len(ssid));
5908 request->match_sets[i].ssid.ssid_len =
5909 nla_len(ssid);
5910 /* special attribute - old implemenation w/a */
5911 request->match_sets[i].rssi_thold =
5912 default_match_rssi;
5913 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5914 if (rssi)
5915 request->match_sets[i].rssi_thold =
5916 nla_get_s32(rssi);
5917 }
5918 i++;
5919 }
5920
5921 /* there was no other matchset, so the RSSI one is alone */
5922 if (i == 0)
5923 request->match_sets[0].rssi_thold = default_match_rssi;
5924
5925 request->min_rssi_thold = INT_MAX;
5926 for (i = 0; i < n_match_sets; i++)
5927 request->min_rssi_thold =
5928 min(request->match_sets[i].rssi_thold,
5929 request->min_rssi_thold);
5930 } else {
5931 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5932 }
5933
5934 if (ie_len) {
5935 request->ie_len = ie_len;
5936 memcpy((void *)request->ie,
5937 nla_data(info->attrs[NL80211_ATTR_IE]),
5938 request->ie_len);
5939 }
5940
5941 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5942 request->flags = nla_get_u32(
5943 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5944 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5945 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5946 err = -EOPNOTSUPP;
5947 goto out_free;
5948 }
5949 }
5950
5951 request->dev = dev;
5952 request->wiphy = &rdev->wiphy;
5953 request->interval = interval;
5954 request->scan_start = jiffies;
5955
5956 err = rdev_sched_scan_start(rdev, dev, request);
5957 if (!err) {
5958 rdev->sched_scan_req = request;
5959 nl80211_send_sched_scan(rdev, dev,
5960 NL80211_CMD_START_SCHED_SCAN);
5961 goto out;
5962 }
5963
5964 out_free:
5965 kfree(request);
5966 out:
5967 return err;
5968 }
5969
5970 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5971 struct genl_info *info)
5972 {
5973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5974
5975 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5976 !rdev->ops->sched_scan_stop)
5977 return -EOPNOTSUPP;
5978
5979 return __cfg80211_stop_sched_scan(rdev, false);
5980 }
5981
5982 static int nl80211_start_radar_detection(struct sk_buff *skb,
5983 struct genl_info *info)
5984 {
5985 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5986 struct net_device *dev = info->user_ptr[1];
5987 struct wireless_dev *wdev = dev->ieee80211_ptr;
5988 struct cfg80211_chan_def chandef;
5989 enum nl80211_dfs_regions dfs_region;
5990 unsigned int cac_time_ms;
5991 int err;
5992
5993 dfs_region = reg_get_dfs_region(wdev->wiphy);
5994 if (dfs_region == NL80211_DFS_UNSET)
5995 return -EINVAL;
5996
5997 err = nl80211_parse_chandef(rdev, info, &chandef);
5998 if (err)
5999 return err;
6000
6001 if (netif_carrier_ok(dev))
6002 return -EBUSY;
6003
6004 if (wdev->cac_started)
6005 return -EBUSY;
6006
6007 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6008 wdev->iftype);
6009 if (err < 0)
6010 return err;
6011
6012 if (err == 0)
6013 return -EINVAL;
6014
6015 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6016 return -EINVAL;
6017
6018 if (!rdev->ops->start_radar_detection)
6019 return -EOPNOTSUPP;
6020
6021 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6022 if (WARN_ON(!cac_time_ms))
6023 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6024
6025 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6026 cac_time_ms);
6027 if (!err) {
6028 wdev->chandef = chandef;
6029 wdev->cac_started = true;
6030 wdev->cac_start_time = jiffies;
6031 wdev->cac_time_ms = cac_time_ms;
6032 }
6033 return err;
6034 }
6035
6036 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6037 {
6038 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6039 struct net_device *dev = info->user_ptr[1];
6040 struct wireless_dev *wdev = dev->ieee80211_ptr;
6041 struct cfg80211_csa_settings params;
6042 /* csa_attrs is defined static to avoid waste of stack size - this
6043 * function is called under RTNL lock, so this should not be a problem.
6044 */
6045 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6046 int err;
6047 bool need_new_beacon = false;
6048 int len, i;
6049 u32 cs_count;
6050
6051 if (!rdev->ops->channel_switch ||
6052 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6053 return -EOPNOTSUPP;
6054
6055 switch (dev->ieee80211_ptr->iftype) {
6056 case NL80211_IFTYPE_AP:
6057 case NL80211_IFTYPE_P2P_GO:
6058 need_new_beacon = true;
6059
6060 /* useless if AP is not running */
6061 if (!wdev->beacon_interval)
6062 return -ENOTCONN;
6063 break;
6064 case NL80211_IFTYPE_ADHOC:
6065 if (!wdev->ssid_len)
6066 return -ENOTCONN;
6067 break;
6068 case NL80211_IFTYPE_MESH_POINT:
6069 if (!wdev->mesh_id_len)
6070 return -ENOTCONN;
6071 break;
6072 default:
6073 return -EOPNOTSUPP;
6074 }
6075
6076 memset(&params, 0, sizeof(params));
6077
6078 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6079 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6080 return -EINVAL;
6081
6082 /* only important for AP, IBSS and mesh create IEs internally */
6083 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6084 return -EINVAL;
6085
6086 /* Even though the attribute is u32, the specification says
6087 * u8, so let's make sure we don't overflow.
6088 */
6089 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6090 if (cs_count > 255)
6091 return -EINVAL;
6092
6093 params.count = cs_count;
6094
6095 if (!need_new_beacon)
6096 goto skip_beacons;
6097
6098 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6099 if (err)
6100 return err;
6101
6102 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6103 info->attrs[NL80211_ATTR_CSA_IES],
6104 nl80211_policy);
6105 if (err)
6106 return err;
6107
6108 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6109 if (err)
6110 return err;
6111
6112 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6113 return -EINVAL;
6114
6115 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6116 if (!len || (len % sizeof(u16)))
6117 return -EINVAL;
6118
6119 params.n_counter_offsets_beacon = len / sizeof(u16);
6120 if (rdev->wiphy.max_num_csa_counters &&
6121 (params.n_counter_offsets_beacon >
6122 rdev->wiphy.max_num_csa_counters))
6123 return -EINVAL;
6124
6125 params.counter_offsets_beacon =
6126 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6127
6128 /* sanity checks - counters should fit and be the same */
6129 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6130 u16 offset = params.counter_offsets_beacon[i];
6131
6132 if (offset >= params.beacon_csa.tail_len)
6133 return -EINVAL;
6134
6135 if (params.beacon_csa.tail[offset] != params.count)
6136 return -EINVAL;
6137 }
6138
6139 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6140 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6141 if (!len || (len % sizeof(u16)))
6142 return -EINVAL;
6143
6144 params.n_counter_offsets_presp = len / sizeof(u16);
6145 if (rdev->wiphy.max_num_csa_counters &&
6146 (params.n_counter_offsets_beacon >
6147 rdev->wiphy.max_num_csa_counters))
6148 return -EINVAL;
6149
6150 params.counter_offsets_presp =
6151 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6152
6153 /* sanity checks - counters should fit and be the same */
6154 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6155 u16 offset = params.counter_offsets_presp[i];
6156
6157 if (offset >= params.beacon_csa.probe_resp_len)
6158 return -EINVAL;
6159
6160 if (params.beacon_csa.probe_resp[offset] !=
6161 params.count)
6162 return -EINVAL;
6163 }
6164 }
6165
6166 skip_beacons:
6167 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6168 if (err)
6169 return err;
6170
6171 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6172 wdev->iftype))
6173 return -EINVAL;
6174
6175 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6176 &params.chandef,
6177 wdev->iftype);
6178 if (err < 0)
6179 return err;
6180
6181 if (err > 0)
6182 params.radar_required = true;
6183
6184 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6185 params.block_tx = true;
6186
6187 wdev_lock(wdev);
6188 err = rdev_channel_switch(rdev, dev, &params);
6189 wdev_unlock(wdev);
6190
6191 return err;
6192 }
6193
6194 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6195 u32 seq, int flags,
6196 struct cfg80211_registered_device *rdev,
6197 struct wireless_dev *wdev,
6198 struct cfg80211_internal_bss *intbss)
6199 {
6200 struct cfg80211_bss *res = &intbss->pub;
6201 const struct cfg80211_bss_ies *ies;
6202 void *hdr;
6203 struct nlattr *bss;
6204
6205 ASSERT_WDEV_LOCK(wdev);
6206
6207 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6208 NL80211_CMD_NEW_SCAN_RESULTS);
6209 if (!hdr)
6210 return -1;
6211
6212 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6213
6214 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6215 goto nla_put_failure;
6216 if (wdev->netdev &&
6217 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6218 goto nla_put_failure;
6219 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6220 goto nla_put_failure;
6221
6222 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6223 if (!bss)
6224 goto nla_put_failure;
6225 if ((!is_zero_ether_addr(res->bssid) &&
6226 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6227 goto nla_put_failure;
6228
6229 rcu_read_lock();
6230 /* indicate whether we have probe response data or not */
6231 if (rcu_access_pointer(res->proberesp_ies) &&
6232 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6233 goto fail_unlock_rcu;
6234
6235 /* this pointer prefers to be pointed to probe response data
6236 * but is always valid
6237 */
6238 ies = rcu_dereference(res->ies);
6239 if (ies) {
6240 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6241 goto fail_unlock_rcu;
6242 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6243 ies->len, ies->data))
6244 goto fail_unlock_rcu;
6245 }
6246
6247 /* and this pointer is always (unless driver didn't know) beacon data */
6248 ies = rcu_dereference(res->beacon_ies);
6249 if (ies && ies->from_beacon) {
6250 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6251 goto fail_unlock_rcu;
6252 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6253 ies->len, ies->data))
6254 goto fail_unlock_rcu;
6255 }
6256 rcu_read_unlock();
6257
6258 if (res->beacon_interval &&
6259 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6260 goto nla_put_failure;
6261 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6262 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6263 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6264 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6265 jiffies_to_msecs(jiffies - intbss->ts)))
6266 goto nla_put_failure;
6267
6268 switch (rdev->wiphy.signal_type) {
6269 case CFG80211_SIGNAL_TYPE_MBM:
6270 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6271 goto nla_put_failure;
6272 break;
6273 case CFG80211_SIGNAL_TYPE_UNSPEC:
6274 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6275 goto nla_put_failure;
6276 break;
6277 default:
6278 break;
6279 }
6280
6281 switch (wdev->iftype) {
6282 case NL80211_IFTYPE_P2P_CLIENT:
6283 case NL80211_IFTYPE_STATION:
6284 if (intbss == wdev->current_bss &&
6285 nla_put_u32(msg, NL80211_BSS_STATUS,
6286 NL80211_BSS_STATUS_ASSOCIATED))
6287 goto nla_put_failure;
6288 break;
6289 case NL80211_IFTYPE_ADHOC:
6290 if (intbss == wdev->current_bss &&
6291 nla_put_u32(msg, NL80211_BSS_STATUS,
6292 NL80211_BSS_STATUS_IBSS_JOINED))
6293 goto nla_put_failure;
6294 break;
6295 default:
6296 break;
6297 }
6298
6299 nla_nest_end(msg, bss);
6300
6301 return genlmsg_end(msg, hdr);
6302
6303 fail_unlock_rcu:
6304 rcu_read_unlock();
6305 nla_put_failure:
6306 genlmsg_cancel(msg, hdr);
6307 return -EMSGSIZE;
6308 }
6309
6310 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6311 {
6312 struct cfg80211_registered_device *rdev;
6313 struct cfg80211_internal_bss *scan;
6314 struct wireless_dev *wdev;
6315 int start = cb->args[2], idx = 0;
6316 int err;
6317
6318 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6319 if (err)
6320 return err;
6321
6322 wdev_lock(wdev);
6323 spin_lock_bh(&rdev->bss_lock);
6324 cfg80211_bss_expire(rdev);
6325
6326 cb->seq = rdev->bss_generation;
6327
6328 list_for_each_entry(scan, &rdev->bss_list, list) {
6329 if (++idx <= start)
6330 continue;
6331 if (nl80211_send_bss(skb, cb,
6332 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6333 rdev, wdev, scan) < 0) {
6334 idx--;
6335 break;
6336 }
6337 }
6338
6339 spin_unlock_bh(&rdev->bss_lock);
6340 wdev_unlock(wdev);
6341
6342 cb->args[2] = idx;
6343 nl80211_finish_wdev_dump(rdev);
6344
6345 return skb->len;
6346 }
6347
6348 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6349 int flags, struct net_device *dev,
6350 struct survey_info *survey)
6351 {
6352 void *hdr;
6353 struct nlattr *infoattr;
6354
6355 hdr = nl80211hdr_put(msg, portid, seq, flags,
6356 NL80211_CMD_NEW_SURVEY_RESULTS);
6357 if (!hdr)
6358 return -ENOMEM;
6359
6360 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6361 goto nla_put_failure;
6362
6363 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6364 if (!infoattr)
6365 goto nla_put_failure;
6366
6367 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6368 survey->channel->center_freq))
6369 goto nla_put_failure;
6370
6371 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6372 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6373 goto nla_put_failure;
6374 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6375 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6376 goto nla_put_failure;
6377 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6378 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6379 survey->channel_time))
6380 goto nla_put_failure;
6381 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6382 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6383 survey->channel_time_busy))
6384 goto nla_put_failure;
6385 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6386 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6387 survey->channel_time_ext_busy))
6388 goto nla_put_failure;
6389 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6390 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6391 survey->channel_time_rx))
6392 goto nla_put_failure;
6393 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6394 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6395 survey->channel_time_tx))
6396 goto nla_put_failure;
6397
6398 nla_nest_end(msg, infoattr);
6399
6400 return genlmsg_end(msg, hdr);
6401
6402 nla_put_failure:
6403 genlmsg_cancel(msg, hdr);
6404 return -EMSGSIZE;
6405 }
6406
6407 static int nl80211_dump_survey(struct sk_buff *skb,
6408 struct netlink_callback *cb)
6409 {
6410 struct survey_info survey;
6411 struct cfg80211_registered_device *rdev;
6412 struct wireless_dev *wdev;
6413 int survey_idx = cb->args[2];
6414 int res;
6415
6416 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6417 if (res)
6418 return res;
6419
6420 if (!wdev->netdev) {
6421 res = -EINVAL;
6422 goto out_err;
6423 }
6424
6425 if (!rdev->ops->dump_survey) {
6426 res = -EOPNOTSUPP;
6427 goto out_err;
6428 }
6429
6430 while (1) {
6431 struct ieee80211_channel *chan;
6432
6433 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6434 if (res == -ENOENT)
6435 break;
6436 if (res)
6437 goto out_err;
6438
6439 /* Survey without a channel doesn't make sense */
6440 if (!survey.channel) {
6441 res = -EINVAL;
6442 goto out;
6443 }
6444
6445 chan = ieee80211_get_channel(&rdev->wiphy,
6446 survey.channel->center_freq);
6447 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6448 survey_idx++;
6449 continue;
6450 }
6451
6452 if (nl80211_send_survey(skb,
6453 NETLINK_CB(cb->skb).portid,
6454 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6455 wdev->netdev, &survey) < 0)
6456 goto out;
6457 survey_idx++;
6458 }
6459
6460 out:
6461 cb->args[2] = survey_idx;
6462 res = skb->len;
6463 out_err:
6464 nl80211_finish_wdev_dump(rdev);
6465 return res;
6466 }
6467
6468 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6469 {
6470 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6471 NL80211_WPA_VERSION_2));
6472 }
6473
6474 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6475 {
6476 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6477 struct net_device *dev = info->user_ptr[1];
6478 struct ieee80211_channel *chan;
6479 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6480 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6481 enum nl80211_auth_type auth_type;
6482 struct key_parse key;
6483 bool local_state_change;
6484
6485 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6486 return -EINVAL;
6487
6488 if (!info->attrs[NL80211_ATTR_MAC])
6489 return -EINVAL;
6490
6491 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6492 return -EINVAL;
6493
6494 if (!info->attrs[NL80211_ATTR_SSID])
6495 return -EINVAL;
6496
6497 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6498 return -EINVAL;
6499
6500 err = nl80211_parse_key(info, &key);
6501 if (err)
6502 return err;
6503
6504 if (key.idx >= 0) {
6505 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6506 return -EINVAL;
6507 if (!key.p.key || !key.p.key_len)
6508 return -EINVAL;
6509 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6510 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6511 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6512 key.p.key_len != WLAN_KEY_LEN_WEP104))
6513 return -EINVAL;
6514 if (key.idx > 4)
6515 return -EINVAL;
6516 } else {
6517 key.p.key_len = 0;
6518 key.p.key = NULL;
6519 }
6520
6521 if (key.idx >= 0) {
6522 int i;
6523 bool ok = false;
6524 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6525 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6526 ok = true;
6527 break;
6528 }
6529 }
6530 if (!ok)
6531 return -EINVAL;
6532 }
6533
6534 if (!rdev->ops->auth)
6535 return -EOPNOTSUPP;
6536
6537 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6538 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6539 return -EOPNOTSUPP;
6540
6541 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6542 chan = nl80211_get_valid_chan(&rdev->wiphy,
6543 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6544 if (!chan)
6545 return -EINVAL;
6546
6547 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6548 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6549
6550 if (info->attrs[NL80211_ATTR_IE]) {
6551 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6552 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6553 }
6554
6555 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6556 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6557 return -EINVAL;
6558
6559 if (auth_type == NL80211_AUTHTYPE_SAE &&
6560 !info->attrs[NL80211_ATTR_SAE_DATA])
6561 return -EINVAL;
6562
6563 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6564 if (auth_type != NL80211_AUTHTYPE_SAE)
6565 return -EINVAL;
6566 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6567 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6568 /* need to include at least Auth Transaction and Status Code */
6569 if (sae_data_len < 4)
6570 return -EINVAL;
6571 }
6572
6573 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6574
6575 /*
6576 * Since we no longer track auth state, ignore
6577 * requests to only change local state.
6578 */
6579 if (local_state_change)
6580 return 0;
6581
6582 wdev_lock(dev->ieee80211_ptr);
6583 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6584 ssid, ssid_len, ie, ie_len,
6585 key.p.key, key.p.key_len, key.idx,
6586 sae_data, sae_data_len);
6587 wdev_unlock(dev->ieee80211_ptr);
6588 return err;
6589 }
6590
6591 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6592 struct genl_info *info,
6593 struct cfg80211_crypto_settings *settings,
6594 int cipher_limit)
6595 {
6596 memset(settings, 0, sizeof(*settings));
6597
6598 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6599
6600 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6601 u16 proto;
6602 proto = nla_get_u16(
6603 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6604 settings->control_port_ethertype = cpu_to_be16(proto);
6605 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6606 proto != ETH_P_PAE)
6607 return -EINVAL;
6608 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6609 settings->control_port_no_encrypt = true;
6610 } else
6611 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6612
6613 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6614 void *data;
6615 int len, i;
6616
6617 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6618 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6619 settings->n_ciphers_pairwise = len / sizeof(u32);
6620
6621 if (len % sizeof(u32))
6622 return -EINVAL;
6623
6624 if (settings->n_ciphers_pairwise > cipher_limit)
6625 return -EINVAL;
6626
6627 memcpy(settings->ciphers_pairwise, data, len);
6628
6629 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6630 if (!cfg80211_supported_cipher_suite(
6631 &rdev->wiphy,
6632 settings->ciphers_pairwise[i]))
6633 return -EINVAL;
6634 }
6635
6636 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6637 settings->cipher_group =
6638 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6639 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6640 settings->cipher_group))
6641 return -EINVAL;
6642 }
6643
6644 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6645 settings->wpa_versions =
6646 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6647 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6648 return -EINVAL;
6649 }
6650
6651 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6652 void *data;
6653 int len;
6654
6655 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6656 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6657 settings->n_akm_suites = len / sizeof(u32);
6658
6659 if (len % sizeof(u32))
6660 return -EINVAL;
6661
6662 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6663 return -EINVAL;
6664
6665 memcpy(settings->akm_suites, data, len);
6666 }
6667
6668 return 0;
6669 }
6670
6671 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6672 {
6673 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6674 struct net_device *dev = info->user_ptr[1];
6675 struct ieee80211_channel *chan;
6676 struct cfg80211_assoc_request req = {};
6677 const u8 *bssid, *ssid;
6678 int err, ssid_len = 0;
6679
6680 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6681 return -EINVAL;
6682
6683 if (!info->attrs[NL80211_ATTR_MAC] ||
6684 !info->attrs[NL80211_ATTR_SSID] ||
6685 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6686 return -EINVAL;
6687
6688 if (!rdev->ops->assoc)
6689 return -EOPNOTSUPP;
6690
6691 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6692 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6693 return -EOPNOTSUPP;
6694
6695 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6696
6697 chan = nl80211_get_valid_chan(&rdev->wiphy,
6698 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6699 if (!chan)
6700 return -EINVAL;
6701
6702 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6703 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6704
6705 if (info->attrs[NL80211_ATTR_IE]) {
6706 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6707 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6708 }
6709
6710 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6711 enum nl80211_mfp mfp =
6712 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6713 if (mfp == NL80211_MFP_REQUIRED)
6714 req.use_mfp = true;
6715 else if (mfp != NL80211_MFP_NO)
6716 return -EINVAL;
6717 }
6718
6719 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6720 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6721
6722 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6723 req.flags |= ASSOC_REQ_DISABLE_HT;
6724
6725 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6726 memcpy(&req.ht_capa_mask,
6727 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6728 sizeof(req.ht_capa_mask));
6729
6730 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6731 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6732 return -EINVAL;
6733 memcpy(&req.ht_capa,
6734 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6735 sizeof(req.ht_capa));
6736 }
6737
6738 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6739 req.flags |= ASSOC_REQ_DISABLE_VHT;
6740
6741 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6742 memcpy(&req.vht_capa_mask,
6743 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6744 sizeof(req.vht_capa_mask));
6745
6746 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6747 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6748 return -EINVAL;
6749 memcpy(&req.vht_capa,
6750 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6751 sizeof(req.vht_capa));
6752 }
6753
6754 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6755 if (!(rdev->wiphy.features &
6756 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6757 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6758 return -EINVAL;
6759 req.flags |= ASSOC_REQ_USE_RRM;
6760 }
6761
6762 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6763 if (!err) {
6764 wdev_lock(dev->ieee80211_ptr);
6765 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6766 ssid, ssid_len, &req);
6767 wdev_unlock(dev->ieee80211_ptr);
6768 }
6769
6770 return err;
6771 }
6772
6773 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6774 {
6775 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6776 struct net_device *dev = info->user_ptr[1];
6777 const u8 *ie = NULL, *bssid;
6778 int ie_len = 0, err;
6779 u16 reason_code;
6780 bool local_state_change;
6781
6782 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6783 return -EINVAL;
6784
6785 if (!info->attrs[NL80211_ATTR_MAC])
6786 return -EINVAL;
6787
6788 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6789 return -EINVAL;
6790
6791 if (!rdev->ops->deauth)
6792 return -EOPNOTSUPP;
6793
6794 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6795 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6796 return -EOPNOTSUPP;
6797
6798 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6799
6800 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6801 if (reason_code == 0) {
6802 /* Reason Code 0 is reserved */
6803 return -EINVAL;
6804 }
6805
6806 if (info->attrs[NL80211_ATTR_IE]) {
6807 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6808 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6809 }
6810
6811 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6812
6813 wdev_lock(dev->ieee80211_ptr);
6814 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6815 local_state_change);
6816 wdev_unlock(dev->ieee80211_ptr);
6817 return err;
6818 }
6819
6820 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6821 {
6822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6823 struct net_device *dev = info->user_ptr[1];
6824 const u8 *ie = NULL, *bssid;
6825 int ie_len = 0, err;
6826 u16 reason_code;
6827 bool local_state_change;
6828
6829 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6830 return -EINVAL;
6831
6832 if (!info->attrs[NL80211_ATTR_MAC])
6833 return -EINVAL;
6834
6835 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6836 return -EINVAL;
6837
6838 if (!rdev->ops->disassoc)
6839 return -EOPNOTSUPP;
6840
6841 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6842 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6843 return -EOPNOTSUPP;
6844
6845 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6846
6847 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6848 if (reason_code == 0) {
6849 /* Reason Code 0 is reserved */
6850 return -EINVAL;
6851 }
6852
6853 if (info->attrs[NL80211_ATTR_IE]) {
6854 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6855 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6856 }
6857
6858 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6859
6860 wdev_lock(dev->ieee80211_ptr);
6861 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6862 local_state_change);
6863 wdev_unlock(dev->ieee80211_ptr);
6864 return err;
6865 }
6866
6867 static bool
6868 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6869 int mcast_rate[IEEE80211_NUM_BANDS],
6870 int rateval)
6871 {
6872 struct wiphy *wiphy = &rdev->wiphy;
6873 bool found = false;
6874 int band, i;
6875
6876 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6877 struct ieee80211_supported_band *sband;
6878
6879 sband = wiphy->bands[band];
6880 if (!sband)
6881 continue;
6882
6883 for (i = 0; i < sband->n_bitrates; i++) {
6884 if (sband->bitrates[i].bitrate == rateval) {
6885 mcast_rate[band] = i + 1;
6886 found = true;
6887 break;
6888 }
6889 }
6890 }
6891
6892 return found;
6893 }
6894
6895 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6896 {
6897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6898 struct net_device *dev = info->user_ptr[1];
6899 struct cfg80211_ibss_params ibss;
6900 struct wiphy *wiphy;
6901 struct cfg80211_cached_keys *connkeys = NULL;
6902 int err;
6903
6904 memset(&ibss, 0, sizeof(ibss));
6905
6906 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6907 return -EINVAL;
6908
6909 if (!info->attrs[NL80211_ATTR_SSID] ||
6910 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6911 return -EINVAL;
6912
6913 ibss.beacon_interval = 100;
6914
6915 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6916 ibss.beacon_interval =
6917 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6918 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6919 return -EINVAL;
6920 }
6921
6922 if (!rdev->ops->join_ibss)
6923 return -EOPNOTSUPP;
6924
6925 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6926 return -EOPNOTSUPP;
6927
6928 wiphy = &rdev->wiphy;
6929
6930 if (info->attrs[NL80211_ATTR_MAC]) {
6931 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6932
6933 if (!is_valid_ether_addr(ibss.bssid))
6934 return -EINVAL;
6935 }
6936 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6937 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6938
6939 if (info->attrs[NL80211_ATTR_IE]) {
6940 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6941 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6942 }
6943
6944 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6945 if (err)
6946 return err;
6947
6948 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6949 NL80211_IFTYPE_ADHOC))
6950 return -EINVAL;
6951
6952 switch (ibss.chandef.width) {
6953 case NL80211_CHAN_WIDTH_5:
6954 case NL80211_CHAN_WIDTH_10:
6955 case NL80211_CHAN_WIDTH_20_NOHT:
6956 break;
6957 case NL80211_CHAN_WIDTH_20:
6958 case NL80211_CHAN_WIDTH_40:
6959 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6960 break;
6961 default:
6962 return -EINVAL;
6963 }
6964
6965 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6966 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6967
6968 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6969 u8 *rates =
6970 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6971 int n_rates =
6972 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6973 struct ieee80211_supported_band *sband =
6974 wiphy->bands[ibss.chandef.chan->band];
6975
6976 err = ieee80211_get_ratemask(sband, rates, n_rates,
6977 &ibss.basic_rates);
6978 if (err)
6979 return err;
6980 }
6981
6982 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6983 memcpy(&ibss.ht_capa_mask,
6984 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6985 sizeof(ibss.ht_capa_mask));
6986
6987 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6988 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6989 return -EINVAL;
6990 memcpy(&ibss.ht_capa,
6991 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6992 sizeof(ibss.ht_capa));
6993 }
6994
6995 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6996 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6997 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6998 return -EINVAL;
6999
7000 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7001 bool no_ht = false;
7002
7003 connkeys = nl80211_parse_connkeys(rdev,
7004 info->attrs[NL80211_ATTR_KEYS],
7005 &no_ht);
7006 if (IS_ERR(connkeys))
7007 return PTR_ERR(connkeys);
7008
7009 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7010 no_ht) {
7011 kfree(connkeys);
7012 return -EINVAL;
7013 }
7014 }
7015
7016 ibss.control_port =
7017 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7018
7019 ibss.userspace_handles_dfs =
7020 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7021
7022 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7023 if (err)
7024 kzfree(connkeys);
7025 return err;
7026 }
7027
7028 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7029 {
7030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7031 struct net_device *dev = info->user_ptr[1];
7032
7033 if (!rdev->ops->leave_ibss)
7034 return -EOPNOTSUPP;
7035
7036 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7037 return -EOPNOTSUPP;
7038
7039 return cfg80211_leave_ibss(rdev, dev, false);
7040 }
7041
7042 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7043 {
7044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7045 struct net_device *dev = info->user_ptr[1];
7046 int mcast_rate[IEEE80211_NUM_BANDS];
7047 u32 nla_rate;
7048 int err;
7049
7050 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7051 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7052 return -EOPNOTSUPP;
7053
7054 if (!rdev->ops->set_mcast_rate)
7055 return -EOPNOTSUPP;
7056
7057 memset(mcast_rate, 0, sizeof(mcast_rate));
7058
7059 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7060 return -EINVAL;
7061
7062 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7063 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7064 return -EINVAL;
7065
7066 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7067
7068 return err;
7069 }
7070
7071 static struct sk_buff *
7072 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7073 int approxlen, u32 portid, u32 seq,
7074 enum nl80211_commands cmd,
7075 enum nl80211_attrs attr,
7076 const struct nl80211_vendor_cmd_info *info,
7077 gfp_t gfp)
7078 {
7079 struct sk_buff *skb;
7080 void *hdr;
7081 struct nlattr *data;
7082
7083 skb = nlmsg_new(approxlen + 100, gfp);
7084 if (!skb)
7085 return NULL;
7086
7087 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7088 if (!hdr) {
7089 kfree_skb(skb);
7090 return NULL;
7091 }
7092
7093 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7094 goto nla_put_failure;
7095
7096 if (info) {
7097 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7098 info->vendor_id))
7099 goto nla_put_failure;
7100 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7101 info->subcmd))
7102 goto nla_put_failure;
7103 }
7104
7105 data = nla_nest_start(skb, attr);
7106
7107 ((void **)skb->cb)[0] = rdev;
7108 ((void **)skb->cb)[1] = hdr;
7109 ((void **)skb->cb)[2] = data;
7110
7111 return skb;
7112
7113 nla_put_failure:
7114 kfree_skb(skb);
7115 return NULL;
7116 }
7117
7118 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7119 enum nl80211_commands cmd,
7120 enum nl80211_attrs attr,
7121 int vendor_event_idx,
7122 int approxlen, gfp_t gfp)
7123 {
7124 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7125 const struct nl80211_vendor_cmd_info *info;
7126
7127 switch (cmd) {
7128 case NL80211_CMD_TESTMODE:
7129 if (WARN_ON(vendor_event_idx != -1))
7130 return NULL;
7131 info = NULL;
7132 break;
7133 case NL80211_CMD_VENDOR:
7134 if (WARN_ON(vendor_event_idx < 0 ||
7135 vendor_event_idx >= wiphy->n_vendor_events))
7136 return NULL;
7137 info = &wiphy->vendor_events[vendor_event_idx];
7138 break;
7139 default:
7140 WARN_ON(1);
7141 return NULL;
7142 }
7143
7144 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7145 cmd, attr, info, gfp);
7146 }
7147 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7148
7149 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7150 {
7151 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7152 void *hdr = ((void **)skb->cb)[1];
7153 struct nlattr *data = ((void **)skb->cb)[2];
7154 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7155
7156 /* clear CB data for netlink core to own from now on */
7157 memset(skb->cb, 0, sizeof(skb->cb));
7158
7159 nla_nest_end(skb, data);
7160 genlmsg_end(skb, hdr);
7161
7162 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7163 mcgrp = NL80211_MCGRP_VENDOR;
7164
7165 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7166 mcgrp, gfp);
7167 }
7168 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7169
7170 #ifdef CONFIG_NL80211_TESTMODE
7171 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7172 {
7173 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7174 struct wireless_dev *wdev =
7175 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7176 int err;
7177
7178 if (!rdev->ops->testmode_cmd)
7179 return -EOPNOTSUPP;
7180
7181 if (IS_ERR(wdev)) {
7182 err = PTR_ERR(wdev);
7183 if (err != -EINVAL)
7184 return err;
7185 wdev = NULL;
7186 } else if (wdev->wiphy != &rdev->wiphy) {
7187 return -EINVAL;
7188 }
7189
7190 if (!info->attrs[NL80211_ATTR_TESTDATA])
7191 return -EINVAL;
7192
7193 rdev->cur_cmd_info = info;
7194 err = rdev_testmode_cmd(rdev, wdev,
7195 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7196 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7197 rdev->cur_cmd_info = NULL;
7198
7199 return err;
7200 }
7201
7202 static int nl80211_testmode_dump(struct sk_buff *skb,
7203 struct netlink_callback *cb)
7204 {
7205 struct cfg80211_registered_device *rdev;
7206 int err;
7207 long phy_idx;
7208 void *data = NULL;
7209 int data_len = 0;
7210
7211 rtnl_lock();
7212
7213 if (cb->args[0]) {
7214 /*
7215 * 0 is a valid index, but not valid for args[0],
7216 * so we need to offset by 1.
7217 */
7218 phy_idx = cb->args[0] - 1;
7219 } else {
7220 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7221 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7222 nl80211_policy);
7223 if (err)
7224 goto out_err;
7225
7226 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7227 nl80211_fam.attrbuf);
7228 if (IS_ERR(rdev)) {
7229 err = PTR_ERR(rdev);
7230 goto out_err;
7231 }
7232 phy_idx = rdev->wiphy_idx;
7233 rdev = NULL;
7234
7235 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7236 cb->args[1] =
7237 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7238 }
7239
7240 if (cb->args[1]) {
7241 data = nla_data((void *)cb->args[1]);
7242 data_len = nla_len((void *)cb->args[1]);
7243 }
7244
7245 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7246 if (!rdev) {
7247 err = -ENOENT;
7248 goto out_err;
7249 }
7250
7251 if (!rdev->ops->testmode_dump) {
7252 err = -EOPNOTSUPP;
7253 goto out_err;
7254 }
7255
7256 while (1) {
7257 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7258 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7259 NL80211_CMD_TESTMODE);
7260 struct nlattr *tmdata;
7261
7262 if (!hdr)
7263 break;
7264
7265 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7266 genlmsg_cancel(skb, hdr);
7267 break;
7268 }
7269
7270 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7271 if (!tmdata) {
7272 genlmsg_cancel(skb, hdr);
7273 break;
7274 }
7275 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7276 nla_nest_end(skb, tmdata);
7277
7278 if (err == -ENOBUFS || err == -ENOENT) {
7279 genlmsg_cancel(skb, hdr);
7280 break;
7281 } else if (err) {
7282 genlmsg_cancel(skb, hdr);
7283 goto out_err;
7284 }
7285
7286 genlmsg_end(skb, hdr);
7287 }
7288
7289 err = skb->len;
7290 /* see above */
7291 cb->args[0] = phy_idx + 1;
7292 out_err:
7293 rtnl_unlock();
7294 return err;
7295 }
7296 #endif
7297
7298 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7299 {
7300 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7301 struct net_device *dev = info->user_ptr[1];
7302 struct cfg80211_connect_params connect;
7303 struct wiphy *wiphy;
7304 struct cfg80211_cached_keys *connkeys = NULL;
7305 int err;
7306
7307 memset(&connect, 0, sizeof(connect));
7308
7309 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7310 return -EINVAL;
7311
7312 if (!info->attrs[NL80211_ATTR_SSID] ||
7313 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7314 return -EINVAL;
7315
7316 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7317 connect.auth_type =
7318 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7319 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7320 NL80211_CMD_CONNECT))
7321 return -EINVAL;
7322 } else
7323 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7324
7325 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7326
7327 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7328 NL80211_MAX_NR_CIPHER_SUITES);
7329 if (err)
7330 return err;
7331
7332 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7333 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7334 return -EOPNOTSUPP;
7335
7336 wiphy = &rdev->wiphy;
7337
7338 connect.bg_scan_period = -1;
7339 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7340 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7341 connect.bg_scan_period =
7342 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7343 }
7344
7345 if (info->attrs[NL80211_ATTR_MAC])
7346 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7347 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7348 connect.bssid_hint =
7349 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7350 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7351 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7352
7353 if (info->attrs[NL80211_ATTR_IE]) {
7354 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7355 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7356 }
7357
7358 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7359 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7360 if (connect.mfp != NL80211_MFP_REQUIRED &&
7361 connect.mfp != NL80211_MFP_NO)
7362 return -EINVAL;
7363 } else {
7364 connect.mfp = NL80211_MFP_NO;
7365 }
7366
7367 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7368 connect.channel = nl80211_get_valid_chan(
7369 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7370 if (!connect.channel)
7371 return -EINVAL;
7372 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7373 connect.channel_hint = nl80211_get_valid_chan(
7374 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7375 if (!connect.channel_hint)
7376 return -EINVAL;
7377 }
7378
7379 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7380 connkeys = nl80211_parse_connkeys(rdev,
7381 info->attrs[NL80211_ATTR_KEYS], NULL);
7382 if (IS_ERR(connkeys))
7383 return PTR_ERR(connkeys);
7384 }
7385
7386 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7387 connect.flags |= ASSOC_REQ_DISABLE_HT;
7388
7389 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7390 memcpy(&connect.ht_capa_mask,
7391 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7392 sizeof(connect.ht_capa_mask));
7393
7394 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7395 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7396 kzfree(connkeys);
7397 return -EINVAL;
7398 }
7399 memcpy(&connect.ht_capa,
7400 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7401 sizeof(connect.ht_capa));
7402 }
7403
7404 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7405 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7406
7407 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7408 memcpy(&connect.vht_capa_mask,
7409 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7410 sizeof(connect.vht_capa_mask));
7411
7412 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7413 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7414 kzfree(connkeys);
7415 return -EINVAL;
7416 }
7417 memcpy(&connect.vht_capa,
7418 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7419 sizeof(connect.vht_capa));
7420 }
7421
7422 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7423 if (!(rdev->wiphy.features &
7424 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7425 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7426 return -EINVAL;
7427 connect.flags |= ASSOC_REQ_USE_RRM;
7428 }
7429
7430 wdev_lock(dev->ieee80211_ptr);
7431 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7432 wdev_unlock(dev->ieee80211_ptr);
7433 if (err)
7434 kzfree(connkeys);
7435 return err;
7436 }
7437
7438 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7439 {
7440 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7441 struct net_device *dev = info->user_ptr[1];
7442 u16 reason;
7443 int ret;
7444
7445 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7446 reason = WLAN_REASON_DEAUTH_LEAVING;
7447 else
7448 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7449
7450 if (reason == 0)
7451 return -EINVAL;
7452
7453 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7454 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7455 return -EOPNOTSUPP;
7456
7457 wdev_lock(dev->ieee80211_ptr);
7458 ret = cfg80211_disconnect(rdev, dev, reason, true);
7459 wdev_unlock(dev->ieee80211_ptr);
7460 return ret;
7461 }
7462
7463 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7464 {
7465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7466 struct net *net;
7467 int err;
7468 u32 pid;
7469
7470 if (!info->attrs[NL80211_ATTR_PID])
7471 return -EINVAL;
7472
7473 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7474
7475 net = get_net_ns_by_pid(pid);
7476 if (IS_ERR(net))
7477 return PTR_ERR(net);
7478
7479 err = 0;
7480
7481 /* check if anything to do */
7482 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7483 err = cfg80211_switch_netns(rdev, net);
7484
7485 put_net(net);
7486 return err;
7487 }
7488
7489 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7490 {
7491 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7492 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7493 struct cfg80211_pmksa *pmksa) = NULL;
7494 struct net_device *dev = info->user_ptr[1];
7495 struct cfg80211_pmksa pmksa;
7496
7497 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7498
7499 if (!info->attrs[NL80211_ATTR_MAC])
7500 return -EINVAL;
7501
7502 if (!info->attrs[NL80211_ATTR_PMKID])
7503 return -EINVAL;
7504
7505 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7506 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7507
7508 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7509 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7510 return -EOPNOTSUPP;
7511
7512 switch (info->genlhdr->cmd) {
7513 case NL80211_CMD_SET_PMKSA:
7514 rdev_ops = rdev->ops->set_pmksa;
7515 break;
7516 case NL80211_CMD_DEL_PMKSA:
7517 rdev_ops = rdev->ops->del_pmksa;
7518 break;
7519 default:
7520 WARN_ON(1);
7521 break;
7522 }
7523
7524 if (!rdev_ops)
7525 return -EOPNOTSUPP;
7526
7527 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7528 }
7529
7530 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7531 {
7532 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7533 struct net_device *dev = info->user_ptr[1];
7534
7535 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7536 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7537 return -EOPNOTSUPP;
7538
7539 if (!rdev->ops->flush_pmksa)
7540 return -EOPNOTSUPP;
7541
7542 return rdev_flush_pmksa(rdev, dev);
7543 }
7544
7545 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7546 {
7547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7548 struct net_device *dev = info->user_ptr[1];
7549 u8 action_code, dialog_token;
7550 u32 peer_capability = 0;
7551 u16 status_code;
7552 u8 *peer;
7553 bool initiator;
7554
7555 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7556 !rdev->ops->tdls_mgmt)
7557 return -EOPNOTSUPP;
7558
7559 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7560 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7561 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7562 !info->attrs[NL80211_ATTR_IE] ||
7563 !info->attrs[NL80211_ATTR_MAC])
7564 return -EINVAL;
7565
7566 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7567 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7568 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7569 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7570 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7571 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7572 peer_capability =
7573 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7574
7575 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7576 dialog_token, status_code, peer_capability,
7577 initiator,
7578 nla_data(info->attrs[NL80211_ATTR_IE]),
7579 nla_len(info->attrs[NL80211_ATTR_IE]));
7580 }
7581
7582 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7583 {
7584 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7585 struct net_device *dev = info->user_ptr[1];
7586 enum nl80211_tdls_operation operation;
7587 u8 *peer;
7588
7589 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7590 !rdev->ops->tdls_oper)
7591 return -EOPNOTSUPP;
7592
7593 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7594 !info->attrs[NL80211_ATTR_MAC])
7595 return -EINVAL;
7596
7597 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7598 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7599
7600 return rdev_tdls_oper(rdev, dev, peer, operation);
7601 }
7602
7603 static int nl80211_remain_on_channel(struct sk_buff *skb,
7604 struct genl_info *info)
7605 {
7606 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7607 struct wireless_dev *wdev = info->user_ptr[1];
7608 struct cfg80211_chan_def chandef;
7609 struct sk_buff *msg;
7610 void *hdr;
7611 u64 cookie;
7612 u32 duration;
7613 int err;
7614
7615 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7616 !info->attrs[NL80211_ATTR_DURATION])
7617 return -EINVAL;
7618
7619 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7620
7621 if (!rdev->ops->remain_on_channel ||
7622 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7623 return -EOPNOTSUPP;
7624
7625 /*
7626 * We should be on that channel for at least a minimum amount of
7627 * time (10ms) but no longer than the driver supports.
7628 */
7629 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7630 duration > rdev->wiphy.max_remain_on_channel_duration)
7631 return -EINVAL;
7632
7633 err = nl80211_parse_chandef(rdev, info, &chandef);
7634 if (err)
7635 return err;
7636
7637 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7638 if (!msg)
7639 return -ENOMEM;
7640
7641 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7642 NL80211_CMD_REMAIN_ON_CHANNEL);
7643 if (!hdr) {
7644 err = -ENOBUFS;
7645 goto free_msg;
7646 }
7647
7648 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7649 duration, &cookie);
7650
7651 if (err)
7652 goto free_msg;
7653
7654 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7655 goto nla_put_failure;
7656
7657 genlmsg_end(msg, hdr);
7658
7659 return genlmsg_reply(msg, info);
7660
7661 nla_put_failure:
7662 err = -ENOBUFS;
7663 free_msg:
7664 nlmsg_free(msg);
7665 return err;
7666 }
7667
7668 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7669 struct genl_info *info)
7670 {
7671 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7672 struct wireless_dev *wdev = info->user_ptr[1];
7673 u64 cookie;
7674
7675 if (!info->attrs[NL80211_ATTR_COOKIE])
7676 return -EINVAL;
7677
7678 if (!rdev->ops->cancel_remain_on_channel)
7679 return -EOPNOTSUPP;
7680
7681 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7682
7683 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7684 }
7685
7686 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7687 u8 *rates, u8 rates_len)
7688 {
7689 u8 i;
7690 u32 mask = 0;
7691
7692 for (i = 0; i < rates_len; i++) {
7693 int rate = (rates[i] & 0x7f) * 5;
7694 int ridx;
7695 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7696 struct ieee80211_rate *srate =
7697 &sband->bitrates[ridx];
7698 if (rate == srate->bitrate) {
7699 mask |= 1 << ridx;
7700 break;
7701 }
7702 }
7703 if (ridx == sband->n_bitrates)
7704 return 0; /* rate not found */
7705 }
7706
7707 return mask;
7708 }
7709
7710 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7711 u8 *rates, u8 rates_len,
7712 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7713 {
7714 u8 i;
7715
7716 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7717
7718 for (i = 0; i < rates_len; i++) {
7719 int ridx, rbit;
7720
7721 ridx = rates[i] / 8;
7722 rbit = BIT(rates[i] % 8);
7723
7724 /* check validity */
7725 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7726 return false;
7727
7728 /* check availability */
7729 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7730 mcs[ridx] |= rbit;
7731 else
7732 return false;
7733 }
7734
7735 return true;
7736 }
7737
7738 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7739 {
7740 u16 mcs_mask = 0;
7741
7742 switch (vht_mcs_map) {
7743 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7744 break;
7745 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7746 mcs_mask = 0x00FF;
7747 break;
7748 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7749 mcs_mask = 0x01FF;
7750 break;
7751 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7752 mcs_mask = 0x03FF;
7753 break;
7754 default:
7755 break;
7756 }
7757
7758 return mcs_mask;
7759 }
7760
7761 static void vht_build_mcs_mask(u16 vht_mcs_map,
7762 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7763 {
7764 u8 nss;
7765
7766 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7767 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7768 vht_mcs_map >>= 2;
7769 }
7770 }
7771
7772 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7773 struct nl80211_txrate_vht *txrate,
7774 u16 mcs[NL80211_VHT_NSS_MAX])
7775 {
7776 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7777 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7778 u8 i;
7779
7780 if (!sband->vht_cap.vht_supported)
7781 return false;
7782
7783 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7784
7785 /* Build vht_mcs_mask from VHT capabilities */
7786 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7787
7788 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7789 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7790 mcs[i] = txrate->mcs[i];
7791 else
7792 return false;
7793 }
7794
7795 return true;
7796 }
7797
7798 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7799 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7800 .len = NL80211_MAX_SUPP_RATES },
7801 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7802 .len = NL80211_MAX_SUPP_HT_RATES },
7803 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7804 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7805 };
7806
7807 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7808 struct genl_info *info)
7809 {
7810 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7811 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7812 struct cfg80211_bitrate_mask mask;
7813 int rem, i;
7814 struct net_device *dev = info->user_ptr[1];
7815 struct nlattr *tx_rates;
7816 struct ieee80211_supported_band *sband;
7817 u16 vht_tx_mcs_map;
7818
7819 if (!rdev->ops->set_bitrate_mask)
7820 return -EOPNOTSUPP;
7821
7822 memset(&mask, 0, sizeof(mask));
7823 /* Default to all rates enabled */
7824 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7825 sband = rdev->wiphy.bands[i];
7826
7827 if (!sband)
7828 continue;
7829
7830 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7831 memcpy(mask.control[i].ht_mcs,
7832 sband->ht_cap.mcs.rx_mask,
7833 sizeof(mask.control[i].ht_mcs));
7834
7835 if (!sband->vht_cap.vht_supported)
7836 continue;
7837
7838 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7839 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7840 }
7841
7842 /* if no rates are given set it back to the defaults */
7843 if (!info->attrs[NL80211_ATTR_TX_RATES])
7844 goto out;
7845
7846 /*
7847 * The nested attribute uses enum nl80211_band as the index. This maps
7848 * directly to the enum ieee80211_band values used in cfg80211.
7849 */
7850 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7851 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7852 enum ieee80211_band band = nla_type(tx_rates);
7853 int err;
7854
7855 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7856 return -EINVAL;
7857 sband = rdev->wiphy.bands[band];
7858 if (sband == NULL)
7859 return -EINVAL;
7860 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7861 nla_len(tx_rates), nl80211_txattr_policy);
7862 if (err)
7863 return err;
7864 if (tb[NL80211_TXRATE_LEGACY]) {
7865 mask.control[band].legacy = rateset_to_mask(
7866 sband,
7867 nla_data(tb[NL80211_TXRATE_LEGACY]),
7868 nla_len(tb[NL80211_TXRATE_LEGACY]));
7869 if ((mask.control[band].legacy == 0) &&
7870 nla_len(tb[NL80211_TXRATE_LEGACY]))
7871 return -EINVAL;
7872 }
7873 if (tb[NL80211_TXRATE_HT]) {
7874 if (!ht_rateset_to_mask(
7875 sband,
7876 nla_data(tb[NL80211_TXRATE_HT]),
7877 nla_len(tb[NL80211_TXRATE_HT]),
7878 mask.control[band].ht_mcs))
7879 return -EINVAL;
7880 }
7881 if (tb[NL80211_TXRATE_VHT]) {
7882 if (!vht_set_mcs_mask(
7883 sband,
7884 nla_data(tb[NL80211_TXRATE_VHT]),
7885 mask.control[band].vht_mcs))
7886 return -EINVAL;
7887 }
7888 if (tb[NL80211_TXRATE_GI]) {
7889 mask.control[band].gi =
7890 nla_get_u8(tb[NL80211_TXRATE_GI]);
7891 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7892 return -EINVAL;
7893 }
7894
7895 if (mask.control[band].legacy == 0) {
7896 /* don't allow empty legacy rates if HT or VHT
7897 * are not even supported.
7898 */
7899 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7900 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7901 return -EINVAL;
7902
7903 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7904 if (mask.control[band].ht_mcs[i])
7905 goto out;
7906
7907 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7908 if (mask.control[band].vht_mcs[i])
7909 goto out;
7910
7911 /* legacy and mcs rates may not be both empty */
7912 return -EINVAL;
7913 }
7914 }
7915
7916 out:
7917 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7918 }
7919
7920 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7921 {
7922 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7923 struct wireless_dev *wdev = info->user_ptr[1];
7924 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7925
7926 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7927 return -EINVAL;
7928
7929 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7930 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7931
7932 switch (wdev->iftype) {
7933 case NL80211_IFTYPE_STATION:
7934 case NL80211_IFTYPE_ADHOC:
7935 case NL80211_IFTYPE_P2P_CLIENT:
7936 case NL80211_IFTYPE_AP:
7937 case NL80211_IFTYPE_AP_VLAN:
7938 case NL80211_IFTYPE_MESH_POINT:
7939 case NL80211_IFTYPE_P2P_GO:
7940 case NL80211_IFTYPE_P2P_DEVICE:
7941 break;
7942 default:
7943 return -EOPNOTSUPP;
7944 }
7945
7946 /* not much point in registering if we can't reply */
7947 if (!rdev->ops->mgmt_tx)
7948 return -EOPNOTSUPP;
7949
7950 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7951 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7952 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7953 }
7954
7955 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7956 {
7957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7958 struct wireless_dev *wdev = info->user_ptr[1];
7959 struct cfg80211_chan_def chandef;
7960 int err;
7961 void *hdr = NULL;
7962 u64 cookie;
7963 struct sk_buff *msg = NULL;
7964 struct cfg80211_mgmt_tx_params params = {
7965 .dont_wait_for_ack =
7966 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7967 };
7968
7969 if (!info->attrs[NL80211_ATTR_FRAME])
7970 return -EINVAL;
7971
7972 if (!rdev->ops->mgmt_tx)
7973 return -EOPNOTSUPP;
7974
7975 switch (wdev->iftype) {
7976 case NL80211_IFTYPE_P2P_DEVICE:
7977 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7978 return -EINVAL;
7979 case NL80211_IFTYPE_STATION:
7980 case NL80211_IFTYPE_ADHOC:
7981 case NL80211_IFTYPE_P2P_CLIENT:
7982 case NL80211_IFTYPE_AP:
7983 case NL80211_IFTYPE_AP_VLAN:
7984 case NL80211_IFTYPE_MESH_POINT:
7985 case NL80211_IFTYPE_P2P_GO:
7986 break;
7987 default:
7988 return -EOPNOTSUPP;
7989 }
7990
7991 if (info->attrs[NL80211_ATTR_DURATION]) {
7992 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7993 return -EINVAL;
7994 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7995
7996 /*
7997 * We should wait on the channel for at least a minimum amount
7998 * of time (10ms) but no longer than the driver supports.
7999 */
8000 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8001 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8002 return -EINVAL;
8003
8004 }
8005
8006 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8007
8008 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8009 return -EINVAL;
8010
8011 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8012
8013 /* get the channel if any has been specified, otherwise pass NULL to
8014 * the driver. The latter will use the current one
8015 */
8016 chandef.chan = NULL;
8017 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8018 err = nl80211_parse_chandef(rdev, info, &chandef);
8019 if (err)
8020 return err;
8021 }
8022
8023 if (!chandef.chan && params.offchan)
8024 return -EINVAL;
8025
8026 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8027 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8028
8029 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8030 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8031 int i;
8032
8033 if (len % sizeof(u16))
8034 return -EINVAL;
8035
8036 params.n_csa_offsets = len / sizeof(u16);
8037 params.csa_offsets =
8038 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8039
8040 /* check that all the offsets fit the frame */
8041 for (i = 0; i < params.n_csa_offsets; i++) {
8042 if (params.csa_offsets[i] >= params.len)
8043 return -EINVAL;
8044 }
8045 }
8046
8047 if (!params.dont_wait_for_ack) {
8048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8049 if (!msg)
8050 return -ENOMEM;
8051
8052 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8053 NL80211_CMD_FRAME);
8054 if (!hdr) {
8055 err = -ENOBUFS;
8056 goto free_msg;
8057 }
8058 }
8059
8060 params.chan = chandef.chan;
8061 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8062 if (err)
8063 goto free_msg;
8064
8065 if (msg) {
8066 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8067 goto nla_put_failure;
8068
8069 genlmsg_end(msg, hdr);
8070 return genlmsg_reply(msg, info);
8071 }
8072
8073 return 0;
8074
8075 nla_put_failure:
8076 err = -ENOBUFS;
8077 free_msg:
8078 nlmsg_free(msg);
8079 return err;
8080 }
8081
8082 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8083 {
8084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8085 struct wireless_dev *wdev = info->user_ptr[1];
8086 u64 cookie;
8087
8088 if (!info->attrs[NL80211_ATTR_COOKIE])
8089 return -EINVAL;
8090
8091 if (!rdev->ops->mgmt_tx_cancel_wait)
8092 return -EOPNOTSUPP;
8093
8094 switch (wdev->iftype) {
8095 case NL80211_IFTYPE_STATION:
8096 case NL80211_IFTYPE_ADHOC:
8097 case NL80211_IFTYPE_P2P_CLIENT:
8098 case NL80211_IFTYPE_AP:
8099 case NL80211_IFTYPE_AP_VLAN:
8100 case NL80211_IFTYPE_P2P_GO:
8101 case NL80211_IFTYPE_P2P_DEVICE:
8102 break;
8103 default:
8104 return -EOPNOTSUPP;
8105 }
8106
8107 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8108
8109 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8110 }
8111
8112 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8113 {
8114 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8115 struct wireless_dev *wdev;
8116 struct net_device *dev = info->user_ptr[1];
8117 u8 ps_state;
8118 bool state;
8119 int err;
8120
8121 if (!info->attrs[NL80211_ATTR_PS_STATE])
8122 return -EINVAL;
8123
8124 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8125
8126 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8127 return -EINVAL;
8128
8129 wdev = dev->ieee80211_ptr;
8130
8131 if (!rdev->ops->set_power_mgmt)
8132 return -EOPNOTSUPP;
8133
8134 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8135
8136 if (state == wdev->ps)
8137 return 0;
8138
8139 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8140 if (!err)
8141 wdev->ps = state;
8142 return err;
8143 }
8144
8145 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8146 {
8147 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8148 enum nl80211_ps_state ps_state;
8149 struct wireless_dev *wdev;
8150 struct net_device *dev = info->user_ptr[1];
8151 struct sk_buff *msg;
8152 void *hdr;
8153 int err;
8154
8155 wdev = dev->ieee80211_ptr;
8156
8157 if (!rdev->ops->set_power_mgmt)
8158 return -EOPNOTSUPP;
8159
8160 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8161 if (!msg)
8162 return -ENOMEM;
8163
8164 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8165 NL80211_CMD_GET_POWER_SAVE);
8166 if (!hdr) {
8167 err = -ENOBUFS;
8168 goto free_msg;
8169 }
8170
8171 if (wdev->ps)
8172 ps_state = NL80211_PS_ENABLED;
8173 else
8174 ps_state = NL80211_PS_DISABLED;
8175
8176 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8177 goto nla_put_failure;
8178
8179 genlmsg_end(msg, hdr);
8180 return genlmsg_reply(msg, info);
8181
8182 nla_put_failure:
8183 err = -ENOBUFS;
8184 free_msg:
8185 nlmsg_free(msg);
8186 return err;
8187 }
8188
8189 static const struct nla_policy
8190 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8191 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8192 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8193 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8194 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8195 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8196 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8197 };
8198
8199 static int nl80211_set_cqm_txe(struct genl_info *info,
8200 u32 rate, u32 pkts, u32 intvl)
8201 {
8202 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8203 struct net_device *dev = info->user_ptr[1];
8204 struct wireless_dev *wdev = dev->ieee80211_ptr;
8205
8206 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8207 return -EINVAL;
8208
8209 if (!rdev->ops->set_cqm_txe_config)
8210 return -EOPNOTSUPP;
8211
8212 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8213 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8214 return -EOPNOTSUPP;
8215
8216 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8217 }
8218
8219 static int nl80211_set_cqm_rssi(struct genl_info *info,
8220 s32 threshold, u32 hysteresis)
8221 {
8222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8223 struct net_device *dev = info->user_ptr[1];
8224 struct wireless_dev *wdev = dev->ieee80211_ptr;
8225
8226 if (threshold > 0)
8227 return -EINVAL;
8228
8229 /* disabling - hysteresis should also be zero then */
8230 if (threshold == 0)
8231 hysteresis = 0;
8232
8233 if (!rdev->ops->set_cqm_rssi_config)
8234 return -EOPNOTSUPP;
8235
8236 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8237 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8238 return -EOPNOTSUPP;
8239
8240 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8241 }
8242
8243 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8244 {
8245 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8246 struct nlattr *cqm;
8247 int err;
8248
8249 cqm = info->attrs[NL80211_ATTR_CQM];
8250 if (!cqm)
8251 return -EINVAL;
8252
8253 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8254 nl80211_attr_cqm_policy);
8255 if (err)
8256 return err;
8257
8258 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8259 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8260 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8261 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8262
8263 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8264 }
8265
8266 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8267 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8268 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8269 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8270 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8271 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8272
8273 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8274 }
8275
8276 return -EINVAL;
8277 }
8278
8279 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8280 {
8281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8282 struct net_device *dev = info->user_ptr[1];
8283 struct ocb_setup setup = {};
8284 int err;
8285
8286 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8287 if (err)
8288 return err;
8289
8290 return cfg80211_join_ocb(rdev, dev, &setup);
8291 }
8292
8293 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8294 {
8295 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8296 struct net_device *dev = info->user_ptr[1];
8297
8298 return cfg80211_leave_ocb(rdev, dev);
8299 }
8300
8301 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8302 {
8303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8304 struct net_device *dev = info->user_ptr[1];
8305 struct mesh_config cfg;
8306 struct mesh_setup setup;
8307 int err;
8308
8309 /* start with default */
8310 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8311 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8312
8313 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8314 /* and parse parameters if given */
8315 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8316 if (err)
8317 return err;
8318 }
8319
8320 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8321 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8322 return -EINVAL;
8323
8324 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8325 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8326
8327 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8328 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8329 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8330 return -EINVAL;
8331
8332 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8333 setup.beacon_interval =
8334 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8335 if (setup.beacon_interval < 10 ||
8336 setup.beacon_interval > 10000)
8337 return -EINVAL;
8338 }
8339
8340 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8341 setup.dtim_period =
8342 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8343 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8344 return -EINVAL;
8345 }
8346
8347 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8348 /* parse additional setup parameters if given */
8349 err = nl80211_parse_mesh_setup(info, &setup);
8350 if (err)
8351 return err;
8352 }
8353
8354 if (setup.user_mpm)
8355 cfg.auto_open_plinks = false;
8356
8357 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8358 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8359 if (err)
8360 return err;
8361 } else {
8362 /* cfg80211_join_mesh() will sort it out */
8363 setup.chandef.chan = NULL;
8364 }
8365
8366 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8367 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8368 int n_rates =
8369 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8370 struct ieee80211_supported_band *sband;
8371
8372 if (!setup.chandef.chan)
8373 return -EINVAL;
8374
8375 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8376
8377 err = ieee80211_get_ratemask(sband, rates, n_rates,
8378 &setup.basic_rates);
8379 if (err)
8380 return err;
8381 }
8382
8383 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8384 }
8385
8386 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8387 {
8388 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8389 struct net_device *dev = info->user_ptr[1];
8390
8391 return cfg80211_leave_mesh(rdev, dev);
8392 }
8393
8394 #ifdef CONFIG_PM
8395 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8396 struct cfg80211_registered_device *rdev)
8397 {
8398 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8399 struct nlattr *nl_pats, *nl_pat;
8400 int i, pat_len;
8401
8402 if (!wowlan->n_patterns)
8403 return 0;
8404
8405 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8406 if (!nl_pats)
8407 return -ENOBUFS;
8408
8409 for (i = 0; i < wowlan->n_patterns; i++) {
8410 nl_pat = nla_nest_start(msg, i + 1);
8411 if (!nl_pat)
8412 return -ENOBUFS;
8413 pat_len = wowlan->patterns[i].pattern_len;
8414 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8415 wowlan->patterns[i].mask) ||
8416 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8417 wowlan->patterns[i].pattern) ||
8418 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8419 wowlan->patterns[i].pkt_offset))
8420 return -ENOBUFS;
8421 nla_nest_end(msg, nl_pat);
8422 }
8423 nla_nest_end(msg, nl_pats);
8424
8425 return 0;
8426 }
8427
8428 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8429 struct cfg80211_wowlan_tcp *tcp)
8430 {
8431 struct nlattr *nl_tcp;
8432
8433 if (!tcp)
8434 return 0;
8435
8436 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8437 if (!nl_tcp)
8438 return -ENOBUFS;
8439
8440 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8441 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8442 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8443 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8444 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8445 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8446 tcp->payload_len, tcp->payload) ||
8447 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8448 tcp->data_interval) ||
8449 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8450 tcp->wake_len, tcp->wake_data) ||
8451 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8452 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8453 return -ENOBUFS;
8454
8455 if (tcp->payload_seq.len &&
8456 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8457 sizeof(tcp->payload_seq), &tcp->payload_seq))
8458 return -ENOBUFS;
8459
8460 if (tcp->payload_tok.len &&
8461 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8462 sizeof(tcp->payload_tok) + tcp->tokens_size,
8463 &tcp->payload_tok))
8464 return -ENOBUFS;
8465
8466 nla_nest_end(msg, nl_tcp);
8467
8468 return 0;
8469 }
8470
8471 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8472 {
8473 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8474 struct sk_buff *msg;
8475 void *hdr;
8476 u32 size = NLMSG_DEFAULT_SIZE;
8477
8478 if (!rdev->wiphy.wowlan)
8479 return -EOPNOTSUPP;
8480
8481 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8482 /* adjust size to have room for all the data */
8483 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8484 rdev->wiphy.wowlan_config->tcp->payload_len +
8485 rdev->wiphy.wowlan_config->tcp->wake_len +
8486 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8487 }
8488
8489 msg = nlmsg_new(size, GFP_KERNEL);
8490 if (!msg)
8491 return -ENOMEM;
8492
8493 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8494 NL80211_CMD_GET_WOWLAN);
8495 if (!hdr)
8496 goto nla_put_failure;
8497
8498 if (rdev->wiphy.wowlan_config) {
8499 struct nlattr *nl_wowlan;
8500
8501 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8502 if (!nl_wowlan)
8503 goto nla_put_failure;
8504
8505 if ((rdev->wiphy.wowlan_config->any &&
8506 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8507 (rdev->wiphy.wowlan_config->disconnect &&
8508 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8509 (rdev->wiphy.wowlan_config->magic_pkt &&
8510 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8511 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8512 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8513 (rdev->wiphy.wowlan_config->eap_identity_req &&
8514 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8515 (rdev->wiphy.wowlan_config->four_way_handshake &&
8516 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8517 (rdev->wiphy.wowlan_config->rfkill_release &&
8518 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8519 goto nla_put_failure;
8520
8521 if (nl80211_send_wowlan_patterns(msg, rdev))
8522 goto nla_put_failure;
8523
8524 if (nl80211_send_wowlan_tcp(msg,
8525 rdev->wiphy.wowlan_config->tcp))
8526 goto nla_put_failure;
8527
8528 nla_nest_end(msg, nl_wowlan);
8529 }
8530
8531 genlmsg_end(msg, hdr);
8532 return genlmsg_reply(msg, info);
8533
8534 nla_put_failure:
8535 nlmsg_free(msg);
8536 return -ENOBUFS;
8537 }
8538
8539 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8540 struct nlattr *attr,
8541 struct cfg80211_wowlan *trig)
8542 {
8543 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8544 struct cfg80211_wowlan_tcp *cfg;
8545 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8546 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8547 u32 size;
8548 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8549 int err, port;
8550
8551 if (!rdev->wiphy.wowlan->tcp)
8552 return -EINVAL;
8553
8554 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8555 nla_data(attr), nla_len(attr),
8556 nl80211_wowlan_tcp_policy);
8557 if (err)
8558 return err;
8559
8560 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8561 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8562 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8563 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8564 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8565 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8566 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8567 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8568 return -EINVAL;
8569
8570 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8571 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8572 return -EINVAL;
8573
8574 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8575 rdev->wiphy.wowlan->tcp->data_interval_max ||
8576 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8577 return -EINVAL;
8578
8579 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8580 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8581 return -EINVAL;
8582
8583 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8584 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8585 return -EINVAL;
8586
8587 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8588 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8589
8590 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8591 tokens_size = tokln - sizeof(*tok);
8592
8593 if (!tok->len || tokens_size % tok->len)
8594 return -EINVAL;
8595 if (!rdev->wiphy.wowlan->tcp->tok)
8596 return -EINVAL;
8597 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8598 return -EINVAL;
8599 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8600 return -EINVAL;
8601 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8602 return -EINVAL;
8603 if (tok->offset + tok->len > data_size)
8604 return -EINVAL;
8605 }
8606
8607 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8608 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8609 if (!rdev->wiphy.wowlan->tcp->seq)
8610 return -EINVAL;
8611 if (seq->len == 0 || seq->len > 4)
8612 return -EINVAL;
8613 if (seq->len + seq->offset > data_size)
8614 return -EINVAL;
8615 }
8616
8617 size = sizeof(*cfg);
8618 size += data_size;
8619 size += wake_size + wake_mask_size;
8620 size += tokens_size;
8621
8622 cfg = kzalloc(size, GFP_KERNEL);
8623 if (!cfg)
8624 return -ENOMEM;
8625 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8626 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8627 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8628 ETH_ALEN);
8629 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8630 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8631 else
8632 port = 0;
8633 #ifdef CONFIG_INET
8634 /* allocate a socket and port for it and use it */
8635 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8636 IPPROTO_TCP, &cfg->sock, 1);
8637 if (err) {
8638 kfree(cfg);
8639 return err;
8640 }
8641 if (inet_csk_get_port(cfg->sock->sk, port)) {
8642 sock_release(cfg->sock);
8643 kfree(cfg);
8644 return -EADDRINUSE;
8645 }
8646 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8647 #else
8648 if (!port) {
8649 kfree(cfg);
8650 return -EINVAL;
8651 }
8652 cfg->src_port = port;
8653 #endif
8654
8655 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8656 cfg->payload_len = data_size;
8657 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8658 memcpy((void *)cfg->payload,
8659 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8660 data_size);
8661 if (seq)
8662 cfg->payload_seq = *seq;
8663 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8664 cfg->wake_len = wake_size;
8665 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8666 memcpy((void *)cfg->wake_data,
8667 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8668 wake_size);
8669 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8670 data_size + wake_size;
8671 memcpy((void *)cfg->wake_mask,
8672 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8673 wake_mask_size);
8674 if (tok) {
8675 cfg->tokens_size = tokens_size;
8676 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8677 }
8678
8679 trig->tcp = cfg;
8680
8681 return 0;
8682 }
8683
8684 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8685 {
8686 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8687 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8688 struct cfg80211_wowlan new_triggers = {};
8689 struct cfg80211_wowlan *ntrig;
8690 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8691 int err, i;
8692 bool prev_enabled = rdev->wiphy.wowlan_config;
8693
8694 if (!wowlan)
8695 return -EOPNOTSUPP;
8696
8697 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8698 cfg80211_rdev_free_wowlan(rdev);
8699 rdev->wiphy.wowlan_config = NULL;
8700 goto set_wakeup;
8701 }
8702
8703 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8704 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8705 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8706 nl80211_wowlan_policy);
8707 if (err)
8708 return err;
8709
8710 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8711 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8712 return -EINVAL;
8713 new_triggers.any = true;
8714 }
8715
8716 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8717 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8718 return -EINVAL;
8719 new_triggers.disconnect = true;
8720 }
8721
8722 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8723 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8724 return -EINVAL;
8725 new_triggers.magic_pkt = true;
8726 }
8727
8728 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8729 return -EINVAL;
8730
8731 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8732 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8733 return -EINVAL;
8734 new_triggers.gtk_rekey_failure = true;
8735 }
8736
8737 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8738 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8739 return -EINVAL;
8740 new_triggers.eap_identity_req = true;
8741 }
8742
8743 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8744 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8745 return -EINVAL;
8746 new_triggers.four_way_handshake = true;
8747 }
8748
8749 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8750 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8751 return -EINVAL;
8752 new_triggers.rfkill_release = true;
8753 }
8754
8755 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8756 struct nlattr *pat;
8757 int n_patterns = 0;
8758 int rem, pat_len, mask_len, pkt_offset;
8759 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8760
8761 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8762 rem)
8763 n_patterns++;
8764 if (n_patterns > wowlan->n_patterns)
8765 return -EINVAL;
8766
8767 new_triggers.patterns = kcalloc(n_patterns,
8768 sizeof(new_triggers.patterns[0]),
8769 GFP_KERNEL);
8770 if (!new_triggers.patterns)
8771 return -ENOMEM;
8772
8773 new_triggers.n_patterns = n_patterns;
8774 i = 0;
8775
8776 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8777 rem) {
8778 u8 *mask_pat;
8779
8780 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8781 nla_len(pat), NULL);
8782 err = -EINVAL;
8783 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8784 !pat_tb[NL80211_PKTPAT_PATTERN])
8785 goto error;
8786 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8787 mask_len = DIV_ROUND_UP(pat_len, 8);
8788 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8789 goto error;
8790 if (pat_len > wowlan->pattern_max_len ||
8791 pat_len < wowlan->pattern_min_len)
8792 goto error;
8793
8794 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8795 pkt_offset = 0;
8796 else
8797 pkt_offset = nla_get_u32(
8798 pat_tb[NL80211_PKTPAT_OFFSET]);
8799 if (pkt_offset > wowlan->max_pkt_offset)
8800 goto error;
8801 new_triggers.patterns[i].pkt_offset = pkt_offset;
8802
8803 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8804 if (!mask_pat) {
8805 err = -ENOMEM;
8806 goto error;
8807 }
8808 new_triggers.patterns[i].mask = mask_pat;
8809 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8810 mask_len);
8811 mask_pat += mask_len;
8812 new_triggers.patterns[i].pattern = mask_pat;
8813 new_triggers.patterns[i].pattern_len = pat_len;
8814 memcpy(mask_pat,
8815 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8816 pat_len);
8817 i++;
8818 }
8819 }
8820
8821 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8822 err = nl80211_parse_wowlan_tcp(
8823 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8824 &new_triggers);
8825 if (err)
8826 goto error;
8827 }
8828
8829 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8830 if (!ntrig) {
8831 err = -ENOMEM;
8832 goto error;
8833 }
8834 cfg80211_rdev_free_wowlan(rdev);
8835 rdev->wiphy.wowlan_config = ntrig;
8836
8837 set_wakeup:
8838 if (rdev->ops->set_wakeup &&
8839 prev_enabled != !!rdev->wiphy.wowlan_config)
8840 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8841
8842 return 0;
8843 error:
8844 for (i = 0; i < new_triggers.n_patterns; i++)
8845 kfree(new_triggers.patterns[i].mask);
8846 kfree(new_triggers.patterns);
8847 if (new_triggers.tcp && new_triggers.tcp->sock)
8848 sock_release(new_triggers.tcp->sock);
8849 kfree(new_triggers.tcp);
8850 return err;
8851 }
8852 #endif
8853
8854 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8855 struct cfg80211_registered_device *rdev)
8856 {
8857 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8858 int i, j, pat_len;
8859 struct cfg80211_coalesce_rules *rule;
8860
8861 if (!rdev->coalesce->n_rules)
8862 return 0;
8863
8864 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8865 if (!nl_rules)
8866 return -ENOBUFS;
8867
8868 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8869 nl_rule = nla_nest_start(msg, i + 1);
8870 if (!nl_rule)
8871 return -ENOBUFS;
8872
8873 rule = &rdev->coalesce->rules[i];
8874 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8875 rule->delay))
8876 return -ENOBUFS;
8877
8878 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8879 rule->condition))
8880 return -ENOBUFS;
8881
8882 nl_pats = nla_nest_start(msg,
8883 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8884 if (!nl_pats)
8885 return -ENOBUFS;
8886
8887 for (j = 0; j < rule->n_patterns; j++) {
8888 nl_pat = nla_nest_start(msg, j + 1);
8889 if (!nl_pat)
8890 return -ENOBUFS;
8891 pat_len = rule->patterns[j].pattern_len;
8892 if (nla_put(msg, NL80211_PKTPAT_MASK,
8893 DIV_ROUND_UP(pat_len, 8),
8894 rule->patterns[j].mask) ||
8895 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8896 rule->patterns[j].pattern) ||
8897 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8898 rule->patterns[j].pkt_offset))
8899 return -ENOBUFS;
8900 nla_nest_end(msg, nl_pat);
8901 }
8902 nla_nest_end(msg, nl_pats);
8903 nla_nest_end(msg, nl_rule);
8904 }
8905 nla_nest_end(msg, nl_rules);
8906
8907 return 0;
8908 }
8909
8910 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8911 {
8912 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8913 struct sk_buff *msg;
8914 void *hdr;
8915
8916 if (!rdev->wiphy.coalesce)
8917 return -EOPNOTSUPP;
8918
8919 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8920 if (!msg)
8921 return -ENOMEM;
8922
8923 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8924 NL80211_CMD_GET_COALESCE);
8925 if (!hdr)
8926 goto nla_put_failure;
8927
8928 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8929 goto nla_put_failure;
8930
8931 genlmsg_end(msg, hdr);
8932 return genlmsg_reply(msg, info);
8933
8934 nla_put_failure:
8935 nlmsg_free(msg);
8936 return -ENOBUFS;
8937 }
8938
8939 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8940 {
8941 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8942 int i, j;
8943 struct cfg80211_coalesce_rules *rule;
8944
8945 if (!coalesce)
8946 return;
8947
8948 for (i = 0; i < coalesce->n_rules; i++) {
8949 rule = &coalesce->rules[i];
8950 for (j = 0; j < rule->n_patterns; j++)
8951 kfree(rule->patterns[j].mask);
8952 kfree(rule->patterns);
8953 }
8954 kfree(coalesce->rules);
8955 kfree(coalesce);
8956 rdev->coalesce = NULL;
8957 }
8958
8959 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8960 struct nlattr *rule,
8961 struct cfg80211_coalesce_rules *new_rule)
8962 {
8963 int err, i;
8964 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8965 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8966 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8967 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8968
8969 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8970 nla_len(rule), nl80211_coalesce_policy);
8971 if (err)
8972 return err;
8973
8974 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8975 new_rule->delay =
8976 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8977 if (new_rule->delay > coalesce->max_delay)
8978 return -EINVAL;
8979
8980 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8981 new_rule->condition =
8982 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8983 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8984 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8985 return -EINVAL;
8986
8987 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8988 return -EINVAL;
8989
8990 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8991 rem)
8992 n_patterns++;
8993 if (n_patterns > coalesce->n_patterns)
8994 return -EINVAL;
8995
8996 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8997 GFP_KERNEL);
8998 if (!new_rule->patterns)
8999 return -ENOMEM;
9000
9001 new_rule->n_patterns = n_patterns;
9002 i = 0;
9003
9004 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9005 rem) {
9006 u8 *mask_pat;
9007
9008 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9009 nla_len(pat), NULL);
9010 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9011 !pat_tb[NL80211_PKTPAT_PATTERN])
9012 return -EINVAL;
9013 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9014 mask_len = DIV_ROUND_UP(pat_len, 8);
9015 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9016 return -EINVAL;
9017 if (pat_len > coalesce->pattern_max_len ||
9018 pat_len < coalesce->pattern_min_len)
9019 return -EINVAL;
9020
9021 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9022 pkt_offset = 0;
9023 else
9024 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9025 if (pkt_offset > coalesce->max_pkt_offset)
9026 return -EINVAL;
9027 new_rule->patterns[i].pkt_offset = pkt_offset;
9028
9029 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9030 if (!mask_pat)
9031 return -ENOMEM;
9032
9033 new_rule->patterns[i].mask = mask_pat;
9034 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9035 mask_len);
9036
9037 mask_pat += mask_len;
9038 new_rule->patterns[i].pattern = mask_pat;
9039 new_rule->patterns[i].pattern_len = pat_len;
9040 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9041 pat_len);
9042 i++;
9043 }
9044
9045 return 0;
9046 }
9047
9048 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9049 {
9050 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9051 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9052 struct cfg80211_coalesce new_coalesce = {};
9053 struct cfg80211_coalesce *n_coalesce;
9054 int err, rem_rule, n_rules = 0, i, j;
9055 struct nlattr *rule;
9056 struct cfg80211_coalesce_rules *tmp_rule;
9057
9058 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9059 return -EOPNOTSUPP;
9060
9061 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9062 cfg80211_rdev_free_coalesce(rdev);
9063 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9064 return 0;
9065 }
9066
9067 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9068 rem_rule)
9069 n_rules++;
9070 if (n_rules > coalesce->n_rules)
9071 return -EINVAL;
9072
9073 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9074 GFP_KERNEL);
9075 if (!new_coalesce.rules)
9076 return -ENOMEM;
9077
9078 new_coalesce.n_rules = n_rules;
9079 i = 0;
9080
9081 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9082 rem_rule) {
9083 err = nl80211_parse_coalesce_rule(rdev, rule,
9084 &new_coalesce.rules[i]);
9085 if (err)
9086 goto error;
9087
9088 i++;
9089 }
9090
9091 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9092 if (err)
9093 goto error;
9094
9095 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9096 if (!n_coalesce) {
9097 err = -ENOMEM;
9098 goto error;
9099 }
9100 cfg80211_rdev_free_coalesce(rdev);
9101 rdev->coalesce = n_coalesce;
9102
9103 return 0;
9104 error:
9105 for (i = 0; i < new_coalesce.n_rules; i++) {
9106 tmp_rule = &new_coalesce.rules[i];
9107 for (j = 0; j < tmp_rule->n_patterns; j++)
9108 kfree(tmp_rule->patterns[j].mask);
9109 kfree(tmp_rule->patterns);
9110 }
9111 kfree(new_coalesce.rules);
9112
9113 return err;
9114 }
9115
9116 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9117 {
9118 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9119 struct net_device *dev = info->user_ptr[1];
9120 struct wireless_dev *wdev = dev->ieee80211_ptr;
9121 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9122 struct cfg80211_gtk_rekey_data rekey_data;
9123 int err;
9124
9125 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9126 return -EINVAL;
9127
9128 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9129 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9130 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9131 nl80211_rekey_policy);
9132 if (err)
9133 return err;
9134
9135 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9136 return -ERANGE;
9137 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9138 return -ERANGE;
9139 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9140 return -ERANGE;
9141
9142 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9143 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9144 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9145
9146 wdev_lock(wdev);
9147 if (!wdev->current_bss) {
9148 err = -ENOTCONN;
9149 goto out;
9150 }
9151
9152 if (!rdev->ops->set_rekey_data) {
9153 err = -EOPNOTSUPP;
9154 goto out;
9155 }
9156
9157 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9158 out:
9159 wdev_unlock(wdev);
9160 return err;
9161 }
9162
9163 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9164 struct genl_info *info)
9165 {
9166 struct net_device *dev = info->user_ptr[1];
9167 struct wireless_dev *wdev = dev->ieee80211_ptr;
9168
9169 if (wdev->iftype != NL80211_IFTYPE_AP &&
9170 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9171 return -EINVAL;
9172
9173 if (wdev->ap_unexpected_nlportid)
9174 return -EBUSY;
9175
9176 wdev->ap_unexpected_nlportid = info->snd_portid;
9177 return 0;
9178 }
9179
9180 static int nl80211_probe_client(struct sk_buff *skb,
9181 struct genl_info *info)
9182 {
9183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9184 struct net_device *dev = info->user_ptr[1];
9185 struct wireless_dev *wdev = dev->ieee80211_ptr;
9186 struct sk_buff *msg;
9187 void *hdr;
9188 const u8 *addr;
9189 u64 cookie;
9190 int err;
9191
9192 if (wdev->iftype != NL80211_IFTYPE_AP &&
9193 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9194 return -EOPNOTSUPP;
9195
9196 if (!info->attrs[NL80211_ATTR_MAC])
9197 return -EINVAL;
9198
9199 if (!rdev->ops->probe_client)
9200 return -EOPNOTSUPP;
9201
9202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9203 if (!msg)
9204 return -ENOMEM;
9205
9206 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9207 NL80211_CMD_PROBE_CLIENT);
9208 if (!hdr) {
9209 err = -ENOBUFS;
9210 goto free_msg;
9211 }
9212
9213 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9214
9215 err = rdev_probe_client(rdev, dev, addr, &cookie);
9216 if (err)
9217 goto free_msg;
9218
9219 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9220 goto nla_put_failure;
9221
9222 genlmsg_end(msg, hdr);
9223
9224 return genlmsg_reply(msg, info);
9225
9226 nla_put_failure:
9227 err = -ENOBUFS;
9228 free_msg:
9229 nlmsg_free(msg);
9230 return err;
9231 }
9232
9233 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9234 {
9235 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9236 struct cfg80211_beacon_registration *reg, *nreg;
9237 int rv;
9238
9239 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9240 return -EOPNOTSUPP;
9241
9242 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9243 if (!nreg)
9244 return -ENOMEM;
9245
9246 /* First, check if already registered. */
9247 spin_lock_bh(&rdev->beacon_registrations_lock);
9248 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9249 if (reg->nlportid == info->snd_portid) {
9250 rv = -EALREADY;
9251 goto out_err;
9252 }
9253 }
9254 /* Add it to the list */
9255 nreg->nlportid = info->snd_portid;
9256 list_add(&nreg->list, &rdev->beacon_registrations);
9257
9258 spin_unlock_bh(&rdev->beacon_registrations_lock);
9259
9260 return 0;
9261 out_err:
9262 spin_unlock_bh(&rdev->beacon_registrations_lock);
9263 kfree(nreg);
9264 return rv;
9265 }
9266
9267 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9268 {
9269 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9270 struct wireless_dev *wdev = info->user_ptr[1];
9271 int err;
9272
9273 if (!rdev->ops->start_p2p_device)
9274 return -EOPNOTSUPP;
9275
9276 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9277 return -EOPNOTSUPP;
9278
9279 if (wdev->p2p_started)
9280 return 0;
9281
9282 if (rfkill_blocked(rdev->rfkill))
9283 return -ERFKILL;
9284
9285 err = rdev_start_p2p_device(rdev, wdev);
9286 if (err)
9287 return err;
9288
9289 wdev->p2p_started = true;
9290 rdev->opencount++;
9291
9292 return 0;
9293 }
9294
9295 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9296 {
9297 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9298 struct wireless_dev *wdev = info->user_ptr[1];
9299
9300 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9301 return -EOPNOTSUPP;
9302
9303 if (!rdev->ops->stop_p2p_device)
9304 return -EOPNOTSUPP;
9305
9306 cfg80211_stop_p2p_device(rdev, wdev);
9307
9308 return 0;
9309 }
9310
9311 static int nl80211_get_protocol_features(struct sk_buff *skb,
9312 struct genl_info *info)
9313 {
9314 void *hdr;
9315 struct sk_buff *msg;
9316
9317 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9318 if (!msg)
9319 return -ENOMEM;
9320
9321 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9322 NL80211_CMD_GET_PROTOCOL_FEATURES);
9323 if (!hdr)
9324 goto nla_put_failure;
9325
9326 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9327 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9328 goto nla_put_failure;
9329
9330 genlmsg_end(msg, hdr);
9331 return genlmsg_reply(msg, info);
9332
9333 nla_put_failure:
9334 kfree_skb(msg);
9335 return -ENOBUFS;
9336 }
9337
9338 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9339 {
9340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9341 struct cfg80211_update_ft_ies_params ft_params;
9342 struct net_device *dev = info->user_ptr[1];
9343
9344 if (!rdev->ops->update_ft_ies)
9345 return -EOPNOTSUPP;
9346
9347 if (!info->attrs[NL80211_ATTR_MDID] ||
9348 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9349 return -EINVAL;
9350
9351 memset(&ft_params, 0, sizeof(ft_params));
9352 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9353 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9354 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9355
9356 return rdev_update_ft_ies(rdev, dev, &ft_params);
9357 }
9358
9359 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9360 struct genl_info *info)
9361 {
9362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9363 struct wireless_dev *wdev = info->user_ptr[1];
9364 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9365 u16 duration;
9366 int ret;
9367
9368 if (!rdev->ops->crit_proto_start)
9369 return -EOPNOTSUPP;
9370
9371 if (WARN_ON(!rdev->ops->crit_proto_stop))
9372 return -EINVAL;
9373
9374 if (rdev->crit_proto_nlportid)
9375 return -EBUSY;
9376
9377 /* determine protocol if provided */
9378 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9379 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9380
9381 if (proto >= NUM_NL80211_CRIT_PROTO)
9382 return -EINVAL;
9383
9384 /* timeout must be provided */
9385 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9386 return -EINVAL;
9387
9388 duration =
9389 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9390
9391 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9392 return -ERANGE;
9393
9394 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9395 if (!ret)
9396 rdev->crit_proto_nlportid = info->snd_portid;
9397
9398 return ret;
9399 }
9400
9401 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9402 struct genl_info *info)
9403 {
9404 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9405 struct wireless_dev *wdev = info->user_ptr[1];
9406
9407 if (!rdev->ops->crit_proto_stop)
9408 return -EOPNOTSUPP;
9409
9410 if (rdev->crit_proto_nlportid) {
9411 rdev->crit_proto_nlportid = 0;
9412 rdev_crit_proto_stop(rdev, wdev);
9413 }
9414 return 0;
9415 }
9416
9417 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9418 {
9419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9420 struct wireless_dev *wdev =
9421 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9422 int i, err;
9423 u32 vid, subcmd;
9424
9425 if (!rdev->wiphy.vendor_commands)
9426 return -EOPNOTSUPP;
9427
9428 if (IS_ERR(wdev)) {
9429 err = PTR_ERR(wdev);
9430 if (err != -EINVAL)
9431 return err;
9432 wdev = NULL;
9433 } else if (wdev->wiphy != &rdev->wiphy) {
9434 return -EINVAL;
9435 }
9436
9437 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9438 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9439 return -EINVAL;
9440
9441 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9442 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9443 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9444 const struct wiphy_vendor_command *vcmd;
9445 void *data = NULL;
9446 int len = 0;
9447
9448 vcmd = &rdev->wiphy.vendor_commands[i];
9449
9450 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9451 continue;
9452
9453 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9454 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9455 if (!wdev)
9456 return -EINVAL;
9457 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9458 !wdev->netdev)
9459 return -EINVAL;
9460
9461 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9462 if (wdev->netdev &&
9463 !netif_running(wdev->netdev))
9464 return -ENETDOWN;
9465 if (!wdev->netdev && !wdev->p2p_started)
9466 return -ENETDOWN;
9467 }
9468 } else {
9469 wdev = NULL;
9470 }
9471
9472 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9473 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9474 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9475 }
9476
9477 rdev->cur_cmd_info = info;
9478 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9479 data, len);
9480 rdev->cur_cmd_info = NULL;
9481 return err;
9482 }
9483
9484 return -EOPNOTSUPP;
9485 }
9486
9487 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9488 enum nl80211_commands cmd,
9489 enum nl80211_attrs attr,
9490 int approxlen)
9491 {
9492 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9493
9494 if (WARN_ON(!rdev->cur_cmd_info))
9495 return NULL;
9496
9497 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9498 rdev->cur_cmd_info->snd_portid,
9499 rdev->cur_cmd_info->snd_seq,
9500 cmd, attr, NULL, GFP_KERNEL);
9501 }
9502 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9503
9504 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9505 {
9506 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9507 void *hdr = ((void **)skb->cb)[1];
9508 struct nlattr *data = ((void **)skb->cb)[2];
9509
9510 /* clear CB data for netlink core to own from now on */
9511 memset(skb->cb, 0, sizeof(skb->cb));
9512
9513 if (WARN_ON(!rdev->cur_cmd_info)) {
9514 kfree_skb(skb);
9515 return -EINVAL;
9516 }
9517
9518 nla_nest_end(skb, data);
9519 genlmsg_end(skb, hdr);
9520 return genlmsg_reply(skb, rdev->cur_cmd_info);
9521 }
9522 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9523
9524
9525 static int nl80211_set_qos_map(struct sk_buff *skb,
9526 struct genl_info *info)
9527 {
9528 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9529 struct cfg80211_qos_map *qos_map = NULL;
9530 struct net_device *dev = info->user_ptr[1];
9531 u8 *pos, len, num_des, des_len, des;
9532 int ret;
9533
9534 if (!rdev->ops->set_qos_map)
9535 return -EOPNOTSUPP;
9536
9537 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9538 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9539 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9540
9541 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9542 len > IEEE80211_QOS_MAP_LEN_MAX)
9543 return -EINVAL;
9544
9545 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9546 if (!qos_map)
9547 return -ENOMEM;
9548
9549 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9550 if (num_des) {
9551 des_len = num_des *
9552 sizeof(struct cfg80211_dscp_exception);
9553 memcpy(qos_map->dscp_exception, pos, des_len);
9554 qos_map->num_des = num_des;
9555 for (des = 0; des < num_des; des++) {
9556 if (qos_map->dscp_exception[des].up > 7) {
9557 kfree(qos_map);
9558 return -EINVAL;
9559 }
9560 }
9561 pos += des_len;
9562 }
9563 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9564 }
9565
9566 wdev_lock(dev->ieee80211_ptr);
9567 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9568 if (!ret)
9569 ret = rdev_set_qos_map(rdev, dev, qos_map);
9570 wdev_unlock(dev->ieee80211_ptr);
9571
9572 kfree(qos_map);
9573 return ret;
9574 }
9575
9576 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9577 {
9578 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9579 struct net_device *dev = info->user_ptr[1];
9580 struct wireless_dev *wdev = dev->ieee80211_ptr;
9581 const u8 *peer;
9582 u8 tsid, up;
9583 u16 admitted_time = 0;
9584 int err;
9585
9586 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9587 return -EOPNOTSUPP;
9588
9589 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9590 !info->attrs[NL80211_ATTR_USER_PRIO])
9591 return -EINVAL;
9592
9593 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9594 if (tsid >= IEEE80211_NUM_TIDS)
9595 return -EINVAL;
9596
9597 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9598 if (up >= IEEE80211_NUM_UPS)
9599 return -EINVAL;
9600
9601 /* WMM uses TIDs 0-7 even for TSPEC */
9602 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9603 /* TODO: handle 802.11 TSPEC/admission control
9604 * need more attributes for that (e.g. BA session requirement);
9605 * change the WMM adminssion test above to allow both then
9606 */
9607 return -EINVAL;
9608 }
9609
9610 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9611
9612 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9613 admitted_time =
9614 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9615 if (!admitted_time)
9616 return -EINVAL;
9617 }
9618
9619 wdev_lock(wdev);
9620 switch (wdev->iftype) {
9621 case NL80211_IFTYPE_STATION:
9622 case NL80211_IFTYPE_P2P_CLIENT:
9623 if (wdev->current_bss)
9624 break;
9625 err = -ENOTCONN;
9626 goto out;
9627 default:
9628 err = -EOPNOTSUPP;
9629 goto out;
9630 }
9631
9632 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9633
9634 out:
9635 wdev_unlock(wdev);
9636 return err;
9637 }
9638
9639 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9640 {
9641 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9642 struct net_device *dev = info->user_ptr[1];
9643 struct wireless_dev *wdev = dev->ieee80211_ptr;
9644 const u8 *peer;
9645 u8 tsid;
9646 int err;
9647
9648 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9649 return -EINVAL;
9650
9651 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9652 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9653
9654 wdev_lock(wdev);
9655 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9656 wdev_unlock(wdev);
9657
9658 return err;
9659 }
9660
9661 #define NL80211_FLAG_NEED_WIPHY 0x01
9662 #define NL80211_FLAG_NEED_NETDEV 0x02
9663 #define NL80211_FLAG_NEED_RTNL 0x04
9664 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9665 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9666 NL80211_FLAG_CHECK_NETDEV_UP)
9667 #define NL80211_FLAG_NEED_WDEV 0x10
9668 /* If a netdev is associated, it must be UP, P2P must be started */
9669 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9670 NL80211_FLAG_CHECK_NETDEV_UP)
9671 #define NL80211_FLAG_CLEAR_SKB 0x20
9672
9673 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9674 struct genl_info *info)
9675 {
9676 struct cfg80211_registered_device *rdev;
9677 struct wireless_dev *wdev;
9678 struct net_device *dev;
9679 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9680
9681 if (rtnl)
9682 rtnl_lock();
9683
9684 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9685 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9686 if (IS_ERR(rdev)) {
9687 if (rtnl)
9688 rtnl_unlock();
9689 return PTR_ERR(rdev);
9690 }
9691 info->user_ptr[0] = rdev;
9692 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9693 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9694 ASSERT_RTNL();
9695
9696 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9697 info->attrs);
9698 if (IS_ERR(wdev)) {
9699 if (rtnl)
9700 rtnl_unlock();
9701 return PTR_ERR(wdev);
9702 }
9703
9704 dev = wdev->netdev;
9705 rdev = wiphy_to_rdev(wdev->wiphy);
9706
9707 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9708 if (!dev) {
9709 if (rtnl)
9710 rtnl_unlock();
9711 return -EINVAL;
9712 }
9713
9714 info->user_ptr[1] = dev;
9715 } else {
9716 info->user_ptr[1] = wdev;
9717 }
9718
9719 if (dev) {
9720 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9721 !netif_running(dev)) {
9722 if (rtnl)
9723 rtnl_unlock();
9724 return -ENETDOWN;
9725 }
9726
9727 dev_hold(dev);
9728 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9729 if (!wdev->p2p_started) {
9730 if (rtnl)
9731 rtnl_unlock();
9732 return -ENETDOWN;
9733 }
9734 }
9735
9736 info->user_ptr[0] = rdev;
9737 }
9738
9739 return 0;
9740 }
9741
9742 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9743 struct genl_info *info)
9744 {
9745 if (info->user_ptr[1]) {
9746 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9747 struct wireless_dev *wdev = info->user_ptr[1];
9748
9749 if (wdev->netdev)
9750 dev_put(wdev->netdev);
9751 } else {
9752 dev_put(info->user_ptr[1]);
9753 }
9754 }
9755
9756 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9757 rtnl_unlock();
9758
9759 /* If needed, clear the netlink message payload from the SKB
9760 * as it might contain key data that shouldn't stick around on
9761 * the heap after the SKB is freed. The netlink message header
9762 * is still needed for further processing, so leave it intact.
9763 */
9764 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
9765 struct nlmsghdr *nlh = nlmsg_hdr(skb);
9766
9767 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
9768 }
9769 }
9770
9771 static const struct genl_ops nl80211_ops[] = {
9772 {
9773 .cmd = NL80211_CMD_GET_WIPHY,
9774 .doit = nl80211_get_wiphy,
9775 .dumpit = nl80211_dump_wiphy,
9776 .done = nl80211_dump_wiphy_done,
9777 .policy = nl80211_policy,
9778 /* can be retrieved by unprivileged users */
9779 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9780 NL80211_FLAG_NEED_RTNL,
9781 },
9782 {
9783 .cmd = NL80211_CMD_SET_WIPHY,
9784 .doit = nl80211_set_wiphy,
9785 .policy = nl80211_policy,
9786 .flags = GENL_ADMIN_PERM,
9787 .internal_flags = NL80211_FLAG_NEED_RTNL,
9788 },
9789 {
9790 .cmd = NL80211_CMD_GET_INTERFACE,
9791 .doit = nl80211_get_interface,
9792 .dumpit = nl80211_dump_interface,
9793 .policy = nl80211_policy,
9794 /* can be retrieved by unprivileged users */
9795 .internal_flags = NL80211_FLAG_NEED_WDEV |
9796 NL80211_FLAG_NEED_RTNL,
9797 },
9798 {
9799 .cmd = NL80211_CMD_SET_INTERFACE,
9800 .doit = nl80211_set_interface,
9801 .policy = nl80211_policy,
9802 .flags = GENL_ADMIN_PERM,
9803 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9804 NL80211_FLAG_NEED_RTNL,
9805 },
9806 {
9807 .cmd = NL80211_CMD_NEW_INTERFACE,
9808 .doit = nl80211_new_interface,
9809 .policy = nl80211_policy,
9810 .flags = GENL_ADMIN_PERM,
9811 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9812 NL80211_FLAG_NEED_RTNL,
9813 },
9814 {
9815 .cmd = NL80211_CMD_DEL_INTERFACE,
9816 .doit = nl80211_del_interface,
9817 .policy = nl80211_policy,
9818 .flags = GENL_ADMIN_PERM,
9819 .internal_flags = NL80211_FLAG_NEED_WDEV |
9820 NL80211_FLAG_NEED_RTNL,
9821 },
9822 {
9823 .cmd = NL80211_CMD_GET_KEY,
9824 .doit = nl80211_get_key,
9825 .policy = nl80211_policy,
9826 .flags = GENL_ADMIN_PERM,
9827 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9828 NL80211_FLAG_NEED_RTNL,
9829 },
9830 {
9831 .cmd = NL80211_CMD_SET_KEY,
9832 .doit = nl80211_set_key,
9833 .policy = nl80211_policy,
9834 .flags = GENL_ADMIN_PERM,
9835 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9836 NL80211_FLAG_NEED_RTNL |
9837 NL80211_FLAG_CLEAR_SKB,
9838 },
9839 {
9840 .cmd = NL80211_CMD_NEW_KEY,
9841 .doit = nl80211_new_key,
9842 .policy = nl80211_policy,
9843 .flags = GENL_ADMIN_PERM,
9844 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9845 NL80211_FLAG_NEED_RTNL |
9846 NL80211_FLAG_CLEAR_SKB,
9847 },
9848 {
9849 .cmd = NL80211_CMD_DEL_KEY,
9850 .doit = nl80211_del_key,
9851 .policy = nl80211_policy,
9852 .flags = GENL_ADMIN_PERM,
9853 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9854 NL80211_FLAG_NEED_RTNL,
9855 },
9856 {
9857 .cmd = NL80211_CMD_SET_BEACON,
9858 .policy = nl80211_policy,
9859 .flags = GENL_ADMIN_PERM,
9860 .doit = nl80211_set_beacon,
9861 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9862 NL80211_FLAG_NEED_RTNL,
9863 },
9864 {
9865 .cmd = NL80211_CMD_START_AP,
9866 .policy = nl80211_policy,
9867 .flags = GENL_ADMIN_PERM,
9868 .doit = nl80211_start_ap,
9869 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9870 NL80211_FLAG_NEED_RTNL,
9871 },
9872 {
9873 .cmd = NL80211_CMD_STOP_AP,
9874 .policy = nl80211_policy,
9875 .flags = GENL_ADMIN_PERM,
9876 .doit = nl80211_stop_ap,
9877 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9878 NL80211_FLAG_NEED_RTNL,
9879 },
9880 {
9881 .cmd = NL80211_CMD_GET_STATION,
9882 .doit = nl80211_get_station,
9883 .dumpit = nl80211_dump_station,
9884 .policy = nl80211_policy,
9885 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9886 NL80211_FLAG_NEED_RTNL,
9887 },
9888 {
9889 .cmd = NL80211_CMD_SET_STATION,
9890 .doit = nl80211_set_station,
9891 .policy = nl80211_policy,
9892 .flags = GENL_ADMIN_PERM,
9893 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9894 NL80211_FLAG_NEED_RTNL,
9895 },
9896 {
9897 .cmd = NL80211_CMD_NEW_STATION,
9898 .doit = nl80211_new_station,
9899 .policy = nl80211_policy,
9900 .flags = GENL_ADMIN_PERM,
9901 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9902 NL80211_FLAG_NEED_RTNL,
9903 },
9904 {
9905 .cmd = NL80211_CMD_DEL_STATION,
9906 .doit = nl80211_del_station,
9907 .policy = nl80211_policy,
9908 .flags = GENL_ADMIN_PERM,
9909 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9910 NL80211_FLAG_NEED_RTNL,
9911 },
9912 {
9913 .cmd = NL80211_CMD_GET_MPATH,
9914 .doit = nl80211_get_mpath,
9915 .dumpit = nl80211_dump_mpath,
9916 .policy = nl80211_policy,
9917 .flags = GENL_ADMIN_PERM,
9918 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9919 NL80211_FLAG_NEED_RTNL,
9920 },
9921 {
9922 .cmd = NL80211_CMD_GET_MPP,
9923 .doit = nl80211_get_mpp,
9924 .dumpit = nl80211_dump_mpp,
9925 .policy = nl80211_policy,
9926 .flags = GENL_ADMIN_PERM,
9927 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9928 NL80211_FLAG_NEED_RTNL,
9929 },
9930 {
9931 .cmd = NL80211_CMD_SET_MPATH,
9932 .doit = nl80211_set_mpath,
9933 .policy = nl80211_policy,
9934 .flags = GENL_ADMIN_PERM,
9935 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9936 NL80211_FLAG_NEED_RTNL,
9937 },
9938 {
9939 .cmd = NL80211_CMD_NEW_MPATH,
9940 .doit = nl80211_new_mpath,
9941 .policy = nl80211_policy,
9942 .flags = GENL_ADMIN_PERM,
9943 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9944 NL80211_FLAG_NEED_RTNL,
9945 },
9946 {
9947 .cmd = NL80211_CMD_DEL_MPATH,
9948 .doit = nl80211_del_mpath,
9949 .policy = nl80211_policy,
9950 .flags = GENL_ADMIN_PERM,
9951 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9952 NL80211_FLAG_NEED_RTNL,
9953 },
9954 {
9955 .cmd = NL80211_CMD_SET_BSS,
9956 .doit = nl80211_set_bss,
9957 .policy = nl80211_policy,
9958 .flags = GENL_ADMIN_PERM,
9959 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9960 NL80211_FLAG_NEED_RTNL,
9961 },
9962 {
9963 .cmd = NL80211_CMD_GET_REG,
9964 .doit = nl80211_get_reg,
9965 .policy = nl80211_policy,
9966 .internal_flags = NL80211_FLAG_NEED_RTNL,
9967 /* can be retrieved by unprivileged users */
9968 },
9969 {
9970 .cmd = NL80211_CMD_SET_REG,
9971 .doit = nl80211_set_reg,
9972 .policy = nl80211_policy,
9973 .flags = GENL_ADMIN_PERM,
9974 .internal_flags = NL80211_FLAG_NEED_RTNL,
9975 },
9976 {
9977 .cmd = NL80211_CMD_REQ_SET_REG,
9978 .doit = nl80211_req_set_reg,
9979 .policy = nl80211_policy,
9980 .flags = GENL_ADMIN_PERM,
9981 },
9982 {
9983 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9984 .doit = nl80211_get_mesh_config,
9985 .policy = nl80211_policy,
9986 /* can be retrieved by unprivileged users */
9987 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9988 NL80211_FLAG_NEED_RTNL,
9989 },
9990 {
9991 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9992 .doit = nl80211_update_mesh_config,
9993 .policy = nl80211_policy,
9994 .flags = GENL_ADMIN_PERM,
9995 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9996 NL80211_FLAG_NEED_RTNL,
9997 },
9998 {
9999 .cmd = NL80211_CMD_TRIGGER_SCAN,
10000 .doit = nl80211_trigger_scan,
10001 .policy = nl80211_policy,
10002 .flags = GENL_ADMIN_PERM,
10003 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10004 NL80211_FLAG_NEED_RTNL,
10005 },
10006 {
10007 .cmd = NL80211_CMD_GET_SCAN,
10008 .policy = nl80211_policy,
10009 .dumpit = nl80211_dump_scan,
10010 },
10011 {
10012 .cmd = NL80211_CMD_START_SCHED_SCAN,
10013 .doit = nl80211_start_sched_scan,
10014 .policy = nl80211_policy,
10015 .flags = GENL_ADMIN_PERM,
10016 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10017 NL80211_FLAG_NEED_RTNL,
10018 },
10019 {
10020 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10021 .doit = nl80211_stop_sched_scan,
10022 .policy = nl80211_policy,
10023 .flags = GENL_ADMIN_PERM,
10024 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10025 NL80211_FLAG_NEED_RTNL,
10026 },
10027 {
10028 .cmd = NL80211_CMD_AUTHENTICATE,
10029 .doit = nl80211_authenticate,
10030 .policy = nl80211_policy,
10031 .flags = GENL_ADMIN_PERM,
10032 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10033 NL80211_FLAG_NEED_RTNL |
10034 NL80211_FLAG_CLEAR_SKB,
10035 },
10036 {
10037 .cmd = NL80211_CMD_ASSOCIATE,
10038 .doit = nl80211_associate,
10039 .policy = nl80211_policy,
10040 .flags = GENL_ADMIN_PERM,
10041 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10042 NL80211_FLAG_NEED_RTNL,
10043 },
10044 {
10045 .cmd = NL80211_CMD_DEAUTHENTICATE,
10046 .doit = nl80211_deauthenticate,
10047 .policy = nl80211_policy,
10048 .flags = GENL_ADMIN_PERM,
10049 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10050 NL80211_FLAG_NEED_RTNL,
10051 },
10052 {
10053 .cmd = NL80211_CMD_DISASSOCIATE,
10054 .doit = nl80211_disassociate,
10055 .policy = nl80211_policy,
10056 .flags = GENL_ADMIN_PERM,
10057 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10058 NL80211_FLAG_NEED_RTNL,
10059 },
10060 {
10061 .cmd = NL80211_CMD_JOIN_IBSS,
10062 .doit = nl80211_join_ibss,
10063 .policy = nl80211_policy,
10064 .flags = GENL_ADMIN_PERM,
10065 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10066 NL80211_FLAG_NEED_RTNL,
10067 },
10068 {
10069 .cmd = NL80211_CMD_LEAVE_IBSS,
10070 .doit = nl80211_leave_ibss,
10071 .policy = nl80211_policy,
10072 .flags = GENL_ADMIN_PERM,
10073 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10074 NL80211_FLAG_NEED_RTNL,
10075 },
10076 #ifdef CONFIG_NL80211_TESTMODE
10077 {
10078 .cmd = NL80211_CMD_TESTMODE,
10079 .doit = nl80211_testmode_do,
10080 .dumpit = nl80211_testmode_dump,
10081 .policy = nl80211_policy,
10082 .flags = GENL_ADMIN_PERM,
10083 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10084 NL80211_FLAG_NEED_RTNL,
10085 },
10086 #endif
10087 {
10088 .cmd = NL80211_CMD_CONNECT,
10089 .doit = nl80211_connect,
10090 .policy = nl80211_policy,
10091 .flags = GENL_ADMIN_PERM,
10092 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10093 NL80211_FLAG_NEED_RTNL,
10094 },
10095 {
10096 .cmd = NL80211_CMD_DISCONNECT,
10097 .doit = nl80211_disconnect,
10098 .policy = nl80211_policy,
10099 .flags = GENL_ADMIN_PERM,
10100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10101 NL80211_FLAG_NEED_RTNL,
10102 },
10103 {
10104 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10105 .doit = nl80211_wiphy_netns,
10106 .policy = nl80211_policy,
10107 .flags = GENL_ADMIN_PERM,
10108 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10109 NL80211_FLAG_NEED_RTNL,
10110 },
10111 {
10112 .cmd = NL80211_CMD_GET_SURVEY,
10113 .policy = nl80211_policy,
10114 .dumpit = nl80211_dump_survey,
10115 },
10116 {
10117 .cmd = NL80211_CMD_SET_PMKSA,
10118 .doit = nl80211_setdel_pmksa,
10119 .policy = nl80211_policy,
10120 .flags = GENL_ADMIN_PERM,
10121 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10122 NL80211_FLAG_NEED_RTNL,
10123 },
10124 {
10125 .cmd = NL80211_CMD_DEL_PMKSA,
10126 .doit = nl80211_setdel_pmksa,
10127 .policy = nl80211_policy,
10128 .flags = GENL_ADMIN_PERM,
10129 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10130 NL80211_FLAG_NEED_RTNL,
10131 },
10132 {
10133 .cmd = NL80211_CMD_FLUSH_PMKSA,
10134 .doit = nl80211_flush_pmksa,
10135 .policy = nl80211_policy,
10136 .flags = GENL_ADMIN_PERM,
10137 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10138 NL80211_FLAG_NEED_RTNL,
10139 },
10140 {
10141 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10142 .doit = nl80211_remain_on_channel,
10143 .policy = nl80211_policy,
10144 .flags = GENL_ADMIN_PERM,
10145 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10146 NL80211_FLAG_NEED_RTNL,
10147 },
10148 {
10149 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10150 .doit = nl80211_cancel_remain_on_channel,
10151 .policy = nl80211_policy,
10152 .flags = GENL_ADMIN_PERM,
10153 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10154 NL80211_FLAG_NEED_RTNL,
10155 },
10156 {
10157 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10158 .doit = nl80211_set_tx_bitrate_mask,
10159 .policy = nl80211_policy,
10160 .flags = GENL_ADMIN_PERM,
10161 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10162 NL80211_FLAG_NEED_RTNL,
10163 },
10164 {
10165 .cmd = NL80211_CMD_REGISTER_FRAME,
10166 .doit = nl80211_register_mgmt,
10167 .policy = nl80211_policy,
10168 .flags = GENL_ADMIN_PERM,
10169 .internal_flags = NL80211_FLAG_NEED_WDEV |
10170 NL80211_FLAG_NEED_RTNL,
10171 },
10172 {
10173 .cmd = NL80211_CMD_FRAME,
10174 .doit = nl80211_tx_mgmt,
10175 .policy = nl80211_policy,
10176 .flags = GENL_ADMIN_PERM,
10177 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10178 NL80211_FLAG_NEED_RTNL,
10179 },
10180 {
10181 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10182 .doit = nl80211_tx_mgmt_cancel_wait,
10183 .policy = nl80211_policy,
10184 .flags = GENL_ADMIN_PERM,
10185 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10186 NL80211_FLAG_NEED_RTNL,
10187 },
10188 {
10189 .cmd = NL80211_CMD_SET_POWER_SAVE,
10190 .doit = nl80211_set_power_save,
10191 .policy = nl80211_policy,
10192 .flags = GENL_ADMIN_PERM,
10193 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10194 NL80211_FLAG_NEED_RTNL,
10195 },
10196 {
10197 .cmd = NL80211_CMD_GET_POWER_SAVE,
10198 .doit = nl80211_get_power_save,
10199 .policy = nl80211_policy,
10200 /* can be retrieved by unprivileged users */
10201 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10202 NL80211_FLAG_NEED_RTNL,
10203 },
10204 {
10205 .cmd = NL80211_CMD_SET_CQM,
10206 .doit = nl80211_set_cqm,
10207 .policy = nl80211_policy,
10208 .flags = GENL_ADMIN_PERM,
10209 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10210 NL80211_FLAG_NEED_RTNL,
10211 },
10212 {
10213 .cmd = NL80211_CMD_SET_CHANNEL,
10214 .doit = nl80211_set_channel,
10215 .policy = nl80211_policy,
10216 .flags = GENL_ADMIN_PERM,
10217 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10218 NL80211_FLAG_NEED_RTNL,
10219 },
10220 {
10221 .cmd = NL80211_CMD_SET_WDS_PEER,
10222 .doit = nl80211_set_wds_peer,
10223 .policy = nl80211_policy,
10224 .flags = GENL_ADMIN_PERM,
10225 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10226 NL80211_FLAG_NEED_RTNL,
10227 },
10228 {
10229 .cmd = NL80211_CMD_JOIN_MESH,
10230 .doit = nl80211_join_mesh,
10231 .policy = nl80211_policy,
10232 .flags = GENL_ADMIN_PERM,
10233 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10234 NL80211_FLAG_NEED_RTNL,
10235 },
10236 {
10237 .cmd = NL80211_CMD_LEAVE_MESH,
10238 .doit = nl80211_leave_mesh,
10239 .policy = nl80211_policy,
10240 .flags = GENL_ADMIN_PERM,
10241 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10242 NL80211_FLAG_NEED_RTNL,
10243 },
10244 {
10245 .cmd = NL80211_CMD_JOIN_OCB,
10246 .doit = nl80211_join_ocb,
10247 .policy = nl80211_policy,
10248 .flags = GENL_ADMIN_PERM,
10249 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10250 NL80211_FLAG_NEED_RTNL,
10251 },
10252 {
10253 .cmd = NL80211_CMD_LEAVE_OCB,
10254 .doit = nl80211_leave_ocb,
10255 .policy = nl80211_policy,
10256 .flags = GENL_ADMIN_PERM,
10257 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10258 NL80211_FLAG_NEED_RTNL,
10259 },
10260 #ifdef CONFIG_PM
10261 {
10262 .cmd = NL80211_CMD_GET_WOWLAN,
10263 .doit = nl80211_get_wowlan,
10264 .policy = nl80211_policy,
10265 /* can be retrieved by unprivileged users */
10266 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10267 NL80211_FLAG_NEED_RTNL,
10268 },
10269 {
10270 .cmd = NL80211_CMD_SET_WOWLAN,
10271 .doit = nl80211_set_wowlan,
10272 .policy = nl80211_policy,
10273 .flags = GENL_ADMIN_PERM,
10274 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10275 NL80211_FLAG_NEED_RTNL,
10276 },
10277 #endif
10278 {
10279 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10280 .doit = nl80211_set_rekey_data,
10281 .policy = nl80211_policy,
10282 .flags = GENL_ADMIN_PERM,
10283 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10284 NL80211_FLAG_NEED_RTNL |
10285 NL80211_FLAG_CLEAR_SKB,
10286 },
10287 {
10288 .cmd = NL80211_CMD_TDLS_MGMT,
10289 .doit = nl80211_tdls_mgmt,
10290 .policy = nl80211_policy,
10291 .flags = GENL_ADMIN_PERM,
10292 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10293 NL80211_FLAG_NEED_RTNL,
10294 },
10295 {
10296 .cmd = NL80211_CMD_TDLS_OPER,
10297 .doit = nl80211_tdls_oper,
10298 .policy = nl80211_policy,
10299 .flags = GENL_ADMIN_PERM,
10300 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10301 NL80211_FLAG_NEED_RTNL,
10302 },
10303 {
10304 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10305 .doit = nl80211_register_unexpected_frame,
10306 .policy = nl80211_policy,
10307 .flags = GENL_ADMIN_PERM,
10308 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10309 NL80211_FLAG_NEED_RTNL,
10310 },
10311 {
10312 .cmd = NL80211_CMD_PROBE_CLIENT,
10313 .doit = nl80211_probe_client,
10314 .policy = nl80211_policy,
10315 .flags = GENL_ADMIN_PERM,
10316 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10317 NL80211_FLAG_NEED_RTNL,
10318 },
10319 {
10320 .cmd = NL80211_CMD_REGISTER_BEACONS,
10321 .doit = nl80211_register_beacons,
10322 .policy = nl80211_policy,
10323 .flags = GENL_ADMIN_PERM,
10324 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10325 NL80211_FLAG_NEED_RTNL,
10326 },
10327 {
10328 .cmd = NL80211_CMD_SET_NOACK_MAP,
10329 .doit = nl80211_set_noack_map,
10330 .policy = nl80211_policy,
10331 .flags = GENL_ADMIN_PERM,
10332 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10333 NL80211_FLAG_NEED_RTNL,
10334 },
10335 {
10336 .cmd = NL80211_CMD_START_P2P_DEVICE,
10337 .doit = nl80211_start_p2p_device,
10338 .policy = nl80211_policy,
10339 .flags = GENL_ADMIN_PERM,
10340 .internal_flags = NL80211_FLAG_NEED_WDEV |
10341 NL80211_FLAG_NEED_RTNL,
10342 },
10343 {
10344 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10345 .doit = nl80211_stop_p2p_device,
10346 .policy = nl80211_policy,
10347 .flags = GENL_ADMIN_PERM,
10348 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10349 NL80211_FLAG_NEED_RTNL,
10350 },
10351 {
10352 .cmd = NL80211_CMD_SET_MCAST_RATE,
10353 .doit = nl80211_set_mcast_rate,
10354 .policy = nl80211_policy,
10355 .flags = GENL_ADMIN_PERM,
10356 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10357 NL80211_FLAG_NEED_RTNL,
10358 },
10359 {
10360 .cmd = NL80211_CMD_SET_MAC_ACL,
10361 .doit = nl80211_set_mac_acl,
10362 .policy = nl80211_policy,
10363 .flags = GENL_ADMIN_PERM,
10364 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10365 NL80211_FLAG_NEED_RTNL,
10366 },
10367 {
10368 .cmd = NL80211_CMD_RADAR_DETECT,
10369 .doit = nl80211_start_radar_detection,
10370 .policy = nl80211_policy,
10371 .flags = GENL_ADMIN_PERM,
10372 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10373 NL80211_FLAG_NEED_RTNL,
10374 },
10375 {
10376 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10377 .doit = nl80211_get_protocol_features,
10378 .policy = nl80211_policy,
10379 },
10380 {
10381 .cmd = NL80211_CMD_UPDATE_FT_IES,
10382 .doit = nl80211_update_ft_ies,
10383 .policy = nl80211_policy,
10384 .flags = GENL_ADMIN_PERM,
10385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10386 NL80211_FLAG_NEED_RTNL,
10387 },
10388 {
10389 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10390 .doit = nl80211_crit_protocol_start,
10391 .policy = nl80211_policy,
10392 .flags = GENL_ADMIN_PERM,
10393 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10394 NL80211_FLAG_NEED_RTNL,
10395 },
10396 {
10397 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10398 .doit = nl80211_crit_protocol_stop,
10399 .policy = nl80211_policy,
10400 .flags = GENL_ADMIN_PERM,
10401 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10402 NL80211_FLAG_NEED_RTNL,
10403 },
10404 {
10405 .cmd = NL80211_CMD_GET_COALESCE,
10406 .doit = nl80211_get_coalesce,
10407 .policy = nl80211_policy,
10408 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10409 NL80211_FLAG_NEED_RTNL,
10410 },
10411 {
10412 .cmd = NL80211_CMD_SET_COALESCE,
10413 .doit = nl80211_set_coalesce,
10414 .policy = nl80211_policy,
10415 .flags = GENL_ADMIN_PERM,
10416 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10417 NL80211_FLAG_NEED_RTNL,
10418 },
10419 {
10420 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10421 .doit = nl80211_channel_switch,
10422 .policy = nl80211_policy,
10423 .flags = GENL_ADMIN_PERM,
10424 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10425 NL80211_FLAG_NEED_RTNL,
10426 },
10427 {
10428 .cmd = NL80211_CMD_VENDOR,
10429 .doit = nl80211_vendor_cmd,
10430 .policy = nl80211_policy,
10431 .flags = GENL_ADMIN_PERM,
10432 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10433 NL80211_FLAG_NEED_RTNL,
10434 },
10435 {
10436 .cmd = NL80211_CMD_SET_QOS_MAP,
10437 .doit = nl80211_set_qos_map,
10438 .policy = nl80211_policy,
10439 .flags = GENL_ADMIN_PERM,
10440 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10441 NL80211_FLAG_NEED_RTNL,
10442 },
10443 {
10444 .cmd = NL80211_CMD_ADD_TX_TS,
10445 .doit = nl80211_add_tx_ts,
10446 .policy = nl80211_policy,
10447 .flags = GENL_ADMIN_PERM,
10448 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10449 NL80211_FLAG_NEED_RTNL,
10450 },
10451 {
10452 .cmd = NL80211_CMD_DEL_TX_TS,
10453 .doit = nl80211_del_tx_ts,
10454 .policy = nl80211_policy,
10455 .flags = GENL_ADMIN_PERM,
10456 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10457 NL80211_FLAG_NEED_RTNL,
10458 },
10459 };
10460
10461 /* notification functions */
10462
10463 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10464 enum nl80211_commands cmd)
10465 {
10466 struct sk_buff *msg;
10467 struct nl80211_dump_wiphy_state state = {};
10468
10469 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10470 cmd != NL80211_CMD_DEL_WIPHY);
10471
10472 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10473 if (!msg)
10474 return;
10475
10476 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10477 nlmsg_free(msg);
10478 return;
10479 }
10480
10481 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10482 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10483 }
10484
10485 static int nl80211_add_scan_req(struct sk_buff *msg,
10486 struct cfg80211_registered_device *rdev)
10487 {
10488 struct cfg80211_scan_request *req = rdev->scan_req;
10489 struct nlattr *nest;
10490 int i;
10491
10492 if (WARN_ON(!req))
10493 return 0;
10494
10495 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10496 if (!nest)
10497 goto nla_put_failure;
10498 for (i = 0; i < req->n_ssids; i++) {
10499 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10500 goto nla_put_failure;
10501 }
10502 nla_nest_end(msg, nest);
10503
10504 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10505 if (!nest)
10506 goto nla_put_failure;
10507 for (i = 0; i < req->n_channels; i++) {
10508 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10509 goto nla_put_failure;
10510 }
10511 nla_nest_end(msg, nest);
10512
10513 if (req->ie &&
10514 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10515 goto nla_put_failure;
10516
10517 if (req->flags &&
10518 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10519 goto nla_put_failure;
10520
10521 return 0;
10522 nla_put_failure:
10523 return -ENOBUFS;
10524 }
10525
10526 static int nl80211_send_scan_msg(struct sk_buff *msg,
10527 struct cfg80211_registered_device *rdev,
10528 struct wireless_dev *wdev,
10529 u32 portid, u32 seq, int flags,
10530 u32 cmd)
10531 {
10532 void *hdr;
10533
10534 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10535 if (!hdr)
10536 return -1;
10537
10538 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10539 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10540 wdev->netdev->ifindex)) ||
10541 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10542 goto nla_put_failure;
10543
10544 /* ignore errors and send incomplete event anyway */
10545 nl80211_add_scan_req(msg, rdev);
10546
10547 return genlmsg_end(msg, hdr);
10548
10549 nla_put_failure:
10550 genlmsg_cancel(msg, hdr);
10551 return -EMSGSIZE;
10552 }
10553
10554 static int
10555 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10556 struct cfg80211_registered_device *rdev,
10557 struct net_device *netdev,
10558 u32 portid, u32 seq, int flags, u32 cmd)
10559 {
10560 void *hdr;
10561
10562 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10563 if (!hdr)
10564 return -1;
10565
10566 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10567 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10568 goto nla_put_failure;
10569
10570 return genlmsg_end(msg, hdr);
10571
10572 nla_put_failure:
10573 genlmsg_cancel(msg, hdr);
10574 return -EMSGSIZE;
10575 }
10576
10577 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10578 struct wireless_dev *wdev)
10579 {
10580 struct sk_buff *msg;
10581
10582 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10583 if (!msg)
10584 return;
10585
10586 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10587 NL80211_CMD_TRIGGER_SCAN) < 0) {
10588 nlmsg_free(msg);
10589 return;
10590 }
10591
10592 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10593 NL80211_MCGRP_SCAN, GFP_KERNEL);
10594 }
10595
10596 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10597 struct wireless_dev *wdev, bool aborted)
10598 {
10599 struct sk_buff *msg;
10600
10601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10602 if (!msg)
10603 return NULL;
10604
10605 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10606 aborted ? NL80211_CMD_SCAN_ABORTED :
10607 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10608 nlmsg_free(msg);
10609 return NULL;
10610 }
10611
10612 return msg;
10613 }
10614
10615 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10616 struct sk_buff *msg)
10617 {
10618 if (!msg)
10619 return;
10620
10621 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10622 NL80211_MCGRP_SCAN, GFP_KERNEL);
10623 }
10624
10625 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10626 struct net_device *netdev)
10627 {
10628 struct sk_buff *msg;
10629
10630 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10631 if (!msg)
10632 return;
10633
10634 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10635 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10636 nlmsg_free(msg);
10637 return;
10638 }
10639
10640 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10641 NL80211_MCGRP_SCAN, GFP_KERNEL);
10642 }
10643
10644 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10645 struct net_device *netdev, u32 cmd)
10646 {
10647 struct sk_buff *msg;
10648
10649 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10650 if (!msg)
10651 return;
10652
10653 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10654 nlmsg_free(msg);
10655 return;
10656 }
10657
10658 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10659 NL80211_MCGRP_SCAN, GFP_KERNEL);
10660 }
10661
10662 /*
10663 * This can happen on global regulatory changes or device specific settings
10664 * based on custom world regulatory domains.
10665 */
10666 void nl80211_send_reg_change_event(struct regulatory_request *request)
10667 {
10668 struct sk_buff *msg;
10669 void *hdr;
10670
10671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10672 if (!msg)
10673 return;
10674
10675 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10676 if (!hdr) {
10677 nlmsg_free(msg);
10678 return;
10679 }
10680
10681 /* Userspace can always count this one always being set */
10682 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10683 goto nla_put_failure;
10684
10685 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10686 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10687 NL80211_REGDOM_TYPE_WORLD))
10688 goto nla_put_failure;
10689 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10690 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10691 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10692 goto nla_put_failure;
10693 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10694 request->intersect) {
10695 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10696 NL80211_REGDOM_TYPE_INTERSECTION))
10697 goto nla_put_failure;
10698 } else {
10699 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10700 NL80211_REGDOM_TYPE_COUNTRY) ||
10701 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10702 request->alpha2))
10703 goto nla_put_failure;
10704 }
10705
10706 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10707 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10708 goto nla_put_failure;
10709
10710 genlmsg_end(msg, hdr);
10711
10712 rcu_read_lock();
10713 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10714 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10715 rcu_read_unlock();
10716
10717 return;
10718
10719 nla_put_failure:
10720 genlmsg_cancel(msg, hdr);
10721 nlmsg_free(msg);
10722 }
10723
10724 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10725 struct net_device *netdev,
10726 const u8 *buf, size_t len,
10727 enum nl80211_commands cmd, gfp_t gfp,
10728 int uapsd_queues)
10729 {
10730 struct sk_buff *msg;
10731 void *hdr;
10732
10733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10734 if (!msg)
10735 return;
10736
10737 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10738 if (!hdr) {
10739 nlmsg_free(msg);
10740 return;
10741 }
10742
10743 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10744 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10745 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10746 goto nla_put_failure;
10747
10748 if (uapsd_queues >= 0) {
10749 struct nlattr *nla_wmm =
10750 nla_nest_start(msg, NL80211_ATTR_STA_WME);
10751 if (!nla_wmm)
10752 goto nla_put_failure;
10753
10754 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
10755 uapsd_queues))
10756 goto nla_put_failure;
10757
10758 nla_nest_end(msg, nla_wmm);
10759 }
10760
10761 genlmsg_end(msg, hdr);
10762
10763 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10764 NL80211_MCGRP_MLME, gfp);
10765 return;
10766
10767 nla_put_failure:
10768 genlmsg_cancel(msg, hdr);
10769 nlmsg_free(msg);
10770 }
10771
10772 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10773 struct net_device *netdev, const u8 *buf,
10774 size_t len, gfp_t gfp)
10775 {
10776 nl80211_send_mlme_event(rdev, netdev, buf, len,
10777 NL80211_CMD_AUTHENTICATE, gfp, -1);
10778 }
10779
10780 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10781 struct net_device *netdev, const u8 *buf,
10782 size_t len, gfp_t gfp, int uapsd_queues)
10783 {
10784 nl80211_send_mlme_event(rdev, netdev, buf, len,
10785 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
10786 }
10787
10788 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10789 struct net_device *netdev, const u8 *buf,
10790 size_t len, gfp_t gfp)
10791 {
10792 nl80211_send_mlme_event(rdev, netdev, buf, len,
10793 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
10794 }
10795
10796 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10797 struct net_device *netdev, const u8 *buf,
10798 size_t len, gfp_t gfp)
10799 {
10800 nl80211_send_mlme_event(rdev, netdev, buf, len,
10801 NL80211_CMD_DISASSOCIATE, gfp, -1);
10802 }
10803
10804 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10805 size_t len)
10806 {
10807 struct wireless_dev *wdev = dev->ieee80211_ptr;
10808 struct wiphy *wiphy = wdev->wiphy;
10809 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10810 const struct ieee80211_mgmt *mgmt = (void *)buf;
10811 u32 cmd;
10812
10813 if (WARN_ON(len < 2))
10814 return;
10815
10816 if (ieee80211_is_deauth(mgmt->frame_control))
10817 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10818 else
10819 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10820
10821 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10822 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
10823 }
10824 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10825
10826 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10827 struct net_device *netdev, int cmd,
10828 const u8 *addr, gfp_t gfp)
10829 {
10830 struct sk_buff *msg;
10831 void *hdr;
10832
10833 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10834 if (!msg)
10835 return;
10836
10837 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10838 if (!hdr) {
10839 nlmsg_free(msg);
10840 return;
10841 }
10842
10843 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10844 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10845 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10846 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10847 goto nla_put_failure;
10848
10849 genlmsg_end(msg, hdr);
10850
10851 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10852 NL80211_MCGRP_MLME, gfp);
10853 return;
10854
10855 nla_put_failure:
10856 genlmsg_cancel(msg, hdr);
10857 nlmsg_free(msg);
10858 }
10859
10860 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10861 struct net_device *netdev, const u8 *addr,
10862 gfp_t gfp)
10863 {
10864 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10865 addr, gfp);
10866 }
10867
10868 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10869 struct net_device *netdev, const u8 *addr,
10870 gfp_t gfp)
10871 {
10872 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10873 addr, gfp);
10874 }
10875
10876 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10877 struct net_device *netdev, const u8 *bssid,
10878 const u8 *req_ie, size_t req_ie_len,
10879 const u8 *resp_ie, size_t resp_ie_len,
10880 u16 status, gfp_t gfp)
10881 {
10882 struct sk_buff *msg;
10883 void *hdr;
10884
10885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10886 if (!msg)
10887 return;
10888
10889 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10890 if (!hdr) {
10891 nlmsg_free(msg);
10892 return;
10893 }
10894
10895 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10896 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10897 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10898 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10899 (req_ie &&
10900 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10901 (resp_ie &&
10902 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10903 goto nla_put_failure;
10904
10905 genlmsg_end(msg, hdr);
10906
10907 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10908 NL80211_MCGRP_MLME, gfp);
10909 return;
10910
10911 nla_put_failure:
10912 genlmsg_cancel(msg, hdr);
10913 nlmsg_free(msg);
10914
10915 }
10916
10917 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10918 struct net_device *netdev, const u8 *bssid,
10919 const u8 *req_ie, size_t req_ie_len,
10920 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10921 {
10922 struct sk_buff *msg;
10923 void *hdr;
10924
10925 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10926 if (!msg)
10927 return;
10928
10929 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10930 if (!hdr) {
10931 nlmsg_free(msg);
10932 return;
10933 }
10934
10935 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10936 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10937 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10938 (req_ie &&
10939 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10940 (resp_ie &&
10941 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10942 goto nla_put_failure;
10943
10944 genlmsg_end(msg, hdr);
10945
10946 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10947 NL80211_MCGRP_MLME, gfp);
10948 return;
10949
10950 nla_put_failure:
10951 genlmsg_cancel(msg, hdr);
10952 nlmsg_free(msg);
10953
10954 }
10955
10956 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10957 struct net_device *netdev, u16 reason,
10958 const u8 *ie, size_t ie_len, bool from_ap)
10959 {
10960 struct sk_buff *msg;
10961 void *hdr;
10962
10963 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10964 if (!msg)
10965 return;
10966
10967 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10968 if (!hdr) {
10969 nlmsg_free(msg);
10970 return;
10971 }
10972
10973 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10974 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10975 (from_ap && reason &&
10976 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10977 (from_ap &&
10978 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10979 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10980 goto nla_put_failure;
10981
10982 genlmsg_end(msg, hdr);
10983
10984 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10985 NL80211_MCGRP_MLME, GFP_KERNEL);
10986 return;
10987
10988 nla_put_failure:
10989 genlmsg_cancel(msg, hdr);
10990 nlmsg_free(msg);
10991
10992 }
10993
10994 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10995 struct net_device *netdev, const u8 *bssid,
10996 gfp_t gfp)
10997 {
10998 struct sk_buff *msg;
10999 void *hdr;
11000
11001 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11002 if (!msg)
11003 return;
11004
11005 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11006 if (!hdr) {
11007 nlmsg_free(msg);
11008 return;
11009 }
11010
11011 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11012 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11013 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11014 goto nla_put_failure;
11015
11016 genlmsg_end(msg, hdr);
11017
11018 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11019 NL80211_MCGRP_MLME, gfp);
11020 return;
11021
11022 nla_put_failure:
11023 genlmsg_cancel(msg, hdr);
11024 nlmsg_free(msg);
11025 }
11026
11027 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11028 const u8* ie, u8 ie_len, gfp_t gfp)
11029 {
11030 struct wireless_dev *wdev = dev->ieee80211_ptr;
11031 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11032 struct sk_buff *msg;
11033 void *hdr;
11034
11035 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11036 return;
11037
11038 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11039
11040 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11041 if (!msg)
11042 return;
11043
11044 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11045 if (!hdr) {
11046 nlmsg_free(msg);
11047 return;
11048 }
11049
11050 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11051 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11052 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11053 (ie_len && ie &&
11054 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11055 goto nla_put_failure;
11056
11057 genlmsg_end(msg, hdr);
11058
11059 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11060 NL80211_MCGRP_MLME, gfp);
11061 return;
11062
11063 nla_put_failure:
11064 genlmsg_cancel(msg, hdr);
11065 nlmsg_free(msg);
11066 }
11067 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11068
11069 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11070 struct net_device *netdev, const u8 *addr,
11071 enum nl80211_key_type key_type, int key_id,
11072 const u8 *tsc, gfp_t gfp)
11073 {
11074 struct sk_buff *msg;
11075 void *hdr;
11076
11077 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11078 if (!msg)
11079 return;
11080
11081 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11082 if (!hdr) {
11083 nlmsg_free(msg);
11084 return;
11085 }
11086
11087 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11088 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11089 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11090 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11091 (key_id != -1 &&
11092 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11093 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11094 goto nla_put_failure;
11095
11096 genlmsg_end(msg, hdr);
11097
11098 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11099 NL80211_MCGRP_MLME, gfp);
11100 return;
11101
11102 nla_put_failure:
11103 genlmsg_cancel(msg, hdr);
11104 nlmsg_free(msg);
11105 }
11106
11107 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11108 struct ieee80211_channel *channel_before,
11109 struct ieee80211_channel *channel_after)
11110 {
11111 struct sk_buff *msg;
11112 void *hdr;
11113 struct nlattr *nl_freq;
11114
11115 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11116 if (!msg)
11117 return;
11118
11119 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11120 if (!hdr) {
11121 nlmsg_free(msg);
11122 return;
11123 }
11124
11125 /*
11126 * Since we are applying the beacon hint to a wiphy we know its
11127 * wiphy_idx is valid
11128 */
11129 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11130 goto nla_put_failure;
11131
11132 /* Before */
11133 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11134 if (!nl_freq)
11135 goto nla_put_failure;
11136 if (nl80211_msg_put_channel(msg, channel_before, false))
11137 goto nla_put_failure;
11138 nla_nest_end(msg, nl_freq);
11139
11140 /* After */
11141 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11142 if (!nl_freq)
11143 goto nla_put_failure;
11144 if (nl80211_msg_put_channel(msg, channel_after, false))
11145 goto nla_put_failure;
11146 nla_nest_end(msg, nl_freq);
11147
11148 genlmsg_end(msg, hdr);
11149
11150 rcu_read_lock();
11151 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11152 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11153 rcu_read_unlock();
11154
11155 return;
11156
11157 nla_put_failure:
11158 genlmsg_cancel(msg, hdr);
11159 nlmsg_free(msg);
11160 }
11161
11162 static void nl80211_send_remain_on_chan_event(
11163 int cmd, struct cfg80211_registered_device *rdev,
11164 struct wireless_dev *wdev, u64 cookie,
11165 struct ieee80211_channel *chan,
11166 unsigned int duration, gfp_t gfp)
11167 {
11168 struct sk_buff *msg;
11169 void *hdr;
11170
11171 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11172 if (!msg)
11173 return;
11174
11175 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11176 if (!hdr) {
11177 nlmsg_free(msg);
11178 return;
11179 }
11180
11181 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11182 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11183 wdev->netdev->ifindex)) ||
11184 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11185 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11186 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11187 NL80211_CHAN_NO_HT) ||
11188 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11189 goto nla_put_failure;
11190
11191 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11192 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11193 goto nla_put_failure;
11194
11195 genlmsg_end(msg, hdr);
11196
11197 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11198 NL80211_MCGRP_MLME, gfp);
11199 return;
11200
11201 nla_put_failure:
11202 genlmsg_cancel(msg, hdr);
11203 nlmsg_free(msg);
11204 }
11205
11206 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11207 struct ieee80211_channel *chan,
11208 unsigned int duration, gfp_t gfp)
11209 {
11210 struct wiphy *wiphy = wdev->wiphy;
11211 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11212
11213 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11214 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11215 rdev, wdev, cookie, chan,
11216 duration, gfp);
11217 }
11218 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11219
11220 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11221 struct ieee80211_channel *chan,
11222 gfp_t gfp)
11223 {
11224 struct wiphy *wiphy = wdev->wiphy;
11225 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11226
11227 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11228 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11229 rdev, wdev, cookie, chan, 0, gfp);
11230 }
11231 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11232
11233 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11234 struct station_info *sinfo, gfp_t gfp)
11235 {
11236 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11237 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11238 struct sk_buff *msg;
11239
11240 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11241
11242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11243 if (!msg)
11244 return;
11245
11246 if (nl80211_send_station(msg, 0, 0, 0,
11247 rdev, dev, mac_addr, sinfo) < 0) {
11248 nlmsg_free(msg);
11249 return;
11250 }
11251
11252 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11253 NL80211_MCGRP_MLME, gfp);
11254 }
11255 EXPORT_SYMBOL(cfg80211_new_sta);
11256
11257 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11258 {
11259 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11260 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11261 struct sk_buff *msg;
11262 void *hdr;
11263
11264 trace_cfg80211_del_sta(dev, mac_addr);
11265
11266 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11267 if (!msg)
11268 return;
11269
11270 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11271 if (!hdr) {
11272 nlmsg_free(msg);
11273 return;
11274 }
11275
11276 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11277 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11278 goto nla_put_failure;
11279
11280 genlmsg_end(msg, hdr);
11281
11282 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11283 NL80211_MCGRP_MLME, gfp);
11284 return;
11285
11286 nla_put_failure:
11287 genlmsg_cancel(msg, hdr);
11288 nlmsg_free(msg);
11289 }
11290 EXPORT_SYMBOL(cfg80211_del_sta);
11291
11292 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11293 enum nl80211_connect_failed_reason reason,
11294 gfp_t gfp)
11295 {
11296 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11297 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11298 struct sk_buff *msg;
11299 void *hdr;
11300
11301 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11302 if (!msg)
11303 return;
11304
11305 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11306 if (!hdr) {
11307 nlmsg_free(msg);
11308 return;
11309 }
11310
11311 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11312 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11313 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11314 goto nla_put_failure;
11315
11316 genlmsg_end(msg, hdr);
11317
11318 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11319 NL80211_MCGRP_MLME, gfp);
11320 return;
11321
11322 nla_put_failure:
11323 genlmsg_cancel(msg, hdr);
11324 nlmsg_free(msg);
11325 }
11326 EXPORT_SYMBOL(cfg80211_conn_failed);
11327
11328 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11329 const u8 *addr, gfp_t gfp)
11330 {
11331 struct wireless_dev *wdev = dev->ieee80211_ptr;
11332 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11333 struct sk_buff *msg;
11334 void *hdr;
11335 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11336
11337 if (!nlportid)
11338 return false;
11339
11340 msg = nlmsg_new(100, gfp);
11341 if (!msg)
11342 return true;
11343
11344 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11345 if (!hdr) {
11346 nlmsg_free(msg);
11347 return true;
11348 }
11349
11350 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11351 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11352 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11353 goto nla_put_failure;
11354
11355 genlmsg_end(msg, hdr);
11356 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11357 return true;
11358
11359 nla_put_failure:
11360 genlmsg_cancel(msg, hdr);
11361 nlmsg_free(msg);
11362 return true;
11363 }
11364
11365 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11366 const u8 *addr, gfp_t gfp)
11367 {
11368 struct wireless_dev *wdev = dev->ieee80211_ptr;
11369 bool ret;
11370
11371 trace_cfg80211_rx_spurious_frame(dev, addr);
11372
11373 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11374 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11375 trace_cfg80211_return_bool(false);
11376 return false;
11377 }
11378 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11379 addr, gfp);
11380 trace_cfg80211_return_bool(ret);
11381 return ret;
11382 }
11383 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11384
11385 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11386 const u8 *addr, gfp_t gfp)
11387 {
11388 struct wireless_dev *wdev = dev->ieee80211_ptr;
11389 bool ret;
11390
11391 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11392
11393 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11394 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11395 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11396 trace_cfg80211_return_bool(false);
11397 return false;
11398 }
11399 ret = __nl80211_unexpected_frame(dev,
11400 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11401 addr, gfp);
11402 trace_cfg80211_return_bool(ret);
11403 return ret;
11404 }
11405 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11406
11407 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11408 struct wireless_dev *wdev, u32 nlportid,
11409 int freq, int sig_dbm,
11410 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11411 {
11412 struct net_device *netdev = wdev->netdev;
11413 struct sk_buff *msg;
11414 void *hdr;
11415
11416 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11417 if (!msg)
11418 return -ENOMEM;
11419
11420 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11421 if (!hdr) {
11422 nlmsg_free(msg);
11423 return -ENOMEM;
11424 }
11425
11426 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11427 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11428 netdev->ifindex)) ||
11429 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11430 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11431 (sig_dbm &&
11432 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11433 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11434 (flags &&
11435 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11436 goto nla_put_failure;
11437
11438 genlmsg_end(msg, hdr);
11439
11440 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11441
11442 nla_put_failure:
11443 genlmsg_cancel(msg, hdr);
11444 nlmsg_free(msg);
11445 return -ENOBUFS;
11446 }
11447
11448 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11449 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11450 {
11451 struct wiphy *wiphy = wdev->wiphy;
11452 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11453 struct net_device *netdev = wdev->netdev;
11454 struct sk_buff *msg;
11455 void *hdr;
11456
11457 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11458
11459 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11460 if (!msg)
11461 return;
11462
11463 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11464 if (!hdr) {
11465 nlmsg_free(msg);
11466 return;
11467 }
11468
11469 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11470 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11471 netdev->ifindex)) ||
11472 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11473 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11474 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11475 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11476 goto nla_put_failure;
11477
11478 genlmsg_end(msg, hdr);
11479
11480 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11481 NL80211_MCGRP_MLME, gfp);
11482 return;
11483
11484 nla_put_failure:
11485 genlmsg_cancel(msg, hdr);
11486 nlmsg_free(msg);
11487 }
11488 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11489
11490 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11491 enum nl80211_cqm_rssi_threshold_event rssi_event,
11492 gfp_t gfp)
11493 {
11494 struct wireless_dev *wdev = dev->ieee80211_ptr;
11495 struct wiphy *wiphy = wdev->wiphy;
11496 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11497 struct sk_buff *msg;
11498 struct nlattr *pinfoattr;
11499 void *hdr;
11500
11501 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11502
11503 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11504 if (!msg)
11505 return;
11506
11507 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11508 if (!hdr) {
11509 nlmsg_free(msg);
11510 return;
11511 }
11512
11513 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11514 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11515 goto nla_put_failure;
11516
11517 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11518 if (!pinfoattr)
11519 goto nla_put_failure;
11520
11521 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11522 rssi_event))
11523 goto nla_put_failure;
11524
11525 nla_nest_end(msg, pinfoattr);
11526
11527 genlmsg_end(msg, hdr);
11528
11529 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11530 NL80211_MCGRP_MLME, gfp);
11531 return;
11532
11533 nla_put_failure:
11534 genlmsg_cancel(msg, hdr);
11535 nlmsg_free(msg);
11536 }
11537 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11538
11539 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11540 struct net_device *netdev, const u8 *bssid,
11541 const u8 *replay_ctr, gfp_t gfp)
11542 {
11543 struct sk_buff *msg;
11544 struct nlattr *rekey_attr;
11545 void *hdr;
11546
11547 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11548 if (!msg)
11549 return;
11550
11551 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11552 if (!hdr) {
11553 nlmsg_free(msg);
11554 return;
11555 }
11556
11557 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11558 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11559 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11560 goto nla_put_failure;
11561
11562 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11563 if (!rekey_attr)
11564 goto nla_put_failure;
11565
11566 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11567 NL80211_REPLAY_CTR_LEN, replay_ctr))
11568 goto nla_put_failure;
11569
11570 nla_nest_end(msg, rekey_attr);
11571
11572 genlmsg_end(msg, hdr);
11573
11574 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11575 NL80211_MCGRP_MLME, gfp);
11576 return;
11577
11578 nla_put_failure:
11579 genlmsg_cancel(msg, hdr);
11580 nlmsg_free(msg);
11581 }
11582
11583 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11584 const u8 *replay_ctr, gfp_t gfp)
11585 {
11586 struct wireless_dev *wdev = dev->ieee80211_ptr;
11587 struct wiphy *wiphy = wdev->wiphy;
11588 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11589
11590 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11591 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11592 }
11593 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11594
11595 static void
11596 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11597 struct net_device *netdev, int index,
11598 const u8 *bssid, bool preauth, gfp_t gfp)
11599 {
11600 struct sk_buff *msg;
11601 struct nlattr *attr;
11602 void *hdr;
11603
11604 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11605 if (!msg)
11606 return;
11607
11608 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11609 if (!hdr) {
11610 nlmsg_free(msg);
11611 return;
11612 }
11613
11614 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11615 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11616 goto nla_put_failure;
11617
11618 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11619 if (!attr)
11620 goto nla_put_failure;
11621
11622 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11623 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11624 (preauth &&
11625 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11626 goto nla_put_failure;
11627
11628 nla_nest_end(msg, attr);
11629
11630 genlmsg_end(msg, hdr);
11631
11632 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11633 NL80211_MCGRP_MLME, gfp);
11634 return;
11635
11636 nla_put_failure:
11637 genlmsg_cancel(msg, hdr);
11638 nlmsg_free(msg);
11639 }
11640
11641 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11642 const u8 *bssid, bool preauth, gfp_t gfp)
11643 {
11644 struct wireless_dev *wdev = dev->ieee80211_ptr;
11645 struct wiphy *wiphy = wdev->wiphy;
11646 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11647
11648 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11649 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11650 }
11651 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11652
11653 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11654 struct net_device *netdev,
11655 struct cfg80211_chan_def *chandef,
11656 gfp_t gfp)
11657 {
11658 struct sk_buff *msg;
11659 void *hdr;
11660
11661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11662 if (!msg)
11663 return;
11664
11665 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11666 if (!hdr) {
11667 nlmsg_free(msg);
11668 return;
11669 }
11670
11671 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11672 goto nla_put_failure;
11673
11674 if (nl80211_send_chandef(msg, chandef))
11675 goto nla_put_failure;
11676
11677 genlmsg_end(msg, hdr);
11678
11679 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11680 NL80211_MCGRP_MLME, gfp);
11681 return;
11682
11683 nla_put_failure:
11684 genlmsg_cancel(msg, hdr);
11685 nlmsg_free(msg);
11686 }
11687
11688 void cfg80211_ch_switch_notify(struct net_device *dev,
11689 struct cfg80211_chan_def *chandef)
11690 {
11691 struct wireless_dev *wdev = dev->ieee80211_ptr;
11692 struct wiphy *wiphy = wdev->wiphy;
11693 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11694
11695 ASSERT_WDEV_LOCK(wdev);
11696
11697 trace_cfg80211_ch_switch_notify(dev, chandef);
11698
11699 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11700 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11701 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11702 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11703 return;
11704
11705 wdev->chandef = *chandef;
11706 wdev->preset_chandef = *chandef;
11707 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11708 }
11709 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11710
11711 void cfg80211_cqm_txe_notify(struct net_device *dev,
11712 const u8 *peer, u32 num_packets,
11713 u32 rate, u32 intvl, gfp_t gfp)
11714 {
11715 struct wireless_dev *wdev = dev->ieee80211_ptr;
11716 struct wiphy *wiphy = wdev->wiphy;
11717 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11718 struct sk_buff *msg;
11719 struct nlattr *pinfoattr;
11720 void *hdr;
11721
11722 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11723 if (!msg)
11724 return;
11725
11726 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11727 if (!hdr) {
11728 nlmsg_free(msg);
11729 return;
11730 }
11731
11732 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11733 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11734 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11735 goto nla_put_failure;
11736
11737 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11738 if (!pinfoattr)
11739 goto nla_put_failure;
11740
11741 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11742 goto nla_put_failure;
11743
11744 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11745 goto nla_put_failure;
11746
11747 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11748 goto nla_put_failure;
11749
11750 nla_nest_end(msg, pinfoattr);
11751
11752 genlmsg_end(msg, hdr);
11753
11754 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11755 NL80211_MCGRP_MLME, gfp);
11756 return;
11757
11758 nla_put_failure:
11759 genlmsg_cancel(msg, hdr);
11760 nlmsg_free(msg);
11761 }
11762 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11763
11764 void
11765 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11766 const struct cfg80211_chan_def *chandef,
11767 enum nl80211_radar_event event,
11768 struct net_device *netdev, gfp_t gfp)
11769 {
11770 struct sk_buff *msg;
11771 void *hdr;
11772
11773 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11774 if (!msg)
11775 return;
11776
11777 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11778 if (!hdr) {
11779 nlmsg_free(msg);
11780 return;
11781 }
11782
11783 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11784 goto nla_put_failure;
11785
11786 /* NOP and radar events don't need a netdev parameter */
11787 if (netdev) {
11788 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11789
11790 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11791 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11792 goto nla_put_failure;
11793 }
11794
11795 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11796 goto nla_put_failure;
11797
11798 if (nl80211_send_chandef(msg, chandef))
11799 goto nla_put_failure;
11800
11801 genlmsg_end(msg, hdr);
11802
11803 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11804 NL80211_MCGRP_MLME, gfp);
11805 return;
11806
11807 nla_put_failure:
11808 genlmsg_cancel(msg, hdr);
11809 nlmsg_free(msg);
11810 }
11811
11812 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11813 const u8 *peer, u32 num_packets, gfp_t gfp)
11814 {
11815 struct wireless_dev *wdev = dev->ieee80211_ptr;
11816 struct wiphy *wiphy = wdev->wiphy;
11817 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11818 struct sk_buff *msg;
11819 struct nlattr *pinfoattr;
11820 void *hdr;
11821
11822 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11823
11824 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11825 if (!msg)
11826 return;
11827
11828 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11829 if (!hdr) {
11830 nlmsg_free(msg);
11831 return;
11832 }
11833
11834 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11835 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11836 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11837 goto nla_put_failure;
11838
11839 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11840 if (!pinfoattr)
11841 goto nla_put_failure;
11842
11843 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11844 goto nla_put_failure;
11845
11846 nla_nest_end(msg, pinfoattr);
11847
11848 genlmsg_end(msg, hdr);
11849
11850 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11851 NL80211_MCGRP_MLME, gfp);
11852 return;
11853
11854 nla_put_failure:
11855 genlmsg_cancel(msg, hdr);
11856 nlmsg_free(msg);
11857 }
11858 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11859
11860 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11861 u64 cookie, bool acked, gfp_t gfp)
11862 {
11863 struct wireless_dev *wdev = dev->ieee80211_ptr;
11864 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11865 struct sk_buff *msg;
11866 void *hdr;
11867
11868 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11869
11870 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11871
11872 if (!msg)
11873 return;
11874
11875 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11876 if (!hdr) {
11877 nlmsg_free(msg);
11878 return;
11879 }
11880
11881 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11882 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11883 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11884 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11885 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11886 goto nla_put_failure;
11887
11888 genlmsg_end(msg, hdr);
11889
11890 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11891 NL80211_MCGRP_MLME, gfp);
11892 return;
11893
11894 nla_put_failure:
11895 genlmsg_cancel(msg, hdr);
11896 nlmsg_free(msg);
11897 }
11898 EXPORT_SYMBOL(cfg80211_probe_status);
11899
11900 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11901 const u8 *frame, size_t len,
11902 int freq, int sig_dbm)
11903 {
11904 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11905 struct sk_buff *msg;
11906 void *hdr;
11907 struct cfg80211_beacon_registration *reg;
11908
11909 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11910
11911 spin_lock_bh(&rdev->beacon_registrations_lock);
11912 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11913 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11914 if (!msg) {
11915 spin_unlock_bh(&rdev->beacon_registrations_lock);
11916 return;
11917 }
11918
11919 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11920 if (!hdr)
11921 goto nla_put_failure;
11922
11923 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11924 (freq &&
11925 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11926 (sig_dbm &&
11927 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11928 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11929 goto nla_put_failure;
11930
11931 genlmsg_end(msg, hdr);
11932
11933 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11934 }
11935 spin_unlock_bh(&rdev->beacon_registrations_lock);
11936 return;
11937
11938 nla_put_failure:
11939 spin_unlock_bh(&rdev->beacon_registrations_lock);
11940 if (hdr)
11941 genlmsg_cancel(msg, hdr);
11942 nlmsg_free(msg);
11943 }
11944 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11945
11946 #ifdef CONFIG_PM
11947 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11948 struct cfg80211_wowlan_wakeup *wakeup,
11949 gfp_t gfp)
11950 {
11951 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11952 struct sk_buff *msg;
11953 void *hdr;
11954 int size = 200;
11955
11956 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11957
11958 if (wakeup)
11959 size += wakeup->packet_present_len;
11960
11961 msg = nlmsg_new(size, gfp);
11962 if (!msg)
11963 return;
11964
11965 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11966 if (!hdr)
11967 goto free_msg;
11968
11969 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11970 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11971 goto free_msg;
11972
11973 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11974 wdev->netdev->ifindex))
11975 goto free_msg;
11976
11977 if (wakeup) {
11978 struct nlattr *reasons;
11979
11980 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11981 if (!reasons)
11982 goto free_msg;
11983
11984 if (wakeup->disconnect &&
11985 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11986 goto free_msg;
11987 if (wakeup->magic_pkt &&
11988 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11989 goto free_msg;
11990 if (wakeup->gtk_rekey_failure &&
11991 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11992 goto free_msg;
11993 if (wakeup->eap_identity_req &&
11994 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11995 goto free_msg;
11996 if (wakeup->four_way_handshake &&
11997 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11998 goto free_msg;
11999 if (wakeup->rfkill_release &&
12000 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12001 goto free_msg;
12002
12003 if (wakeup->pattern_idx >= 0 &&
12004 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12005 wakeup->pattern_idx))
12006 goto free_msg;
12007
12008 if (wakeup->tcp_match &&
12009 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12010 goto free_msg;
12011
12012 if (wakeup->tcp_connlost &&
12013 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12014 goto free_msg;
12015
12016 if (wakeup->tcp_nomoretokens &&
12017 nla_put_flag(msg,
12018 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12019 goto free_msg;
12020
12021 if (wakeup->packet) {
12022 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12023 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12024
12025 if (!wakeup->packet_80211) {
12026 pkt_attr =
12027 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12028 len_attr =
12029 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12030 }
12031
12032 if (wakeup->packet_len &&
12033 nla_put_u32(msg, len_attr, wakeup->packet_len))
12034 goto free_msg;
12035
12036 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12037 wakeup->packet))
12038 goto free_msg;
12039 }
12040
12041 nla_nest_end(msg, reasons);
12042 }
12043
12044 genlmsg_end(msg, hdr);
12045
12046 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12047 NL80211_MCGRP_MLME, gfp);
12048 return;
12049
12050 free_msg:
12051 nlmsg_free(msg);
12052 }
12053 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12054 #endif
12055
12056 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12057 enum nl80211_tdls_operation oper,
12058 u16 reason_code, gfp_t gfp)
12059 {
12060 struct wireless_dev *wdev = dev->ieee80211_ptr;
12061 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12062 struct sk_buff *msg;
12063 void *hdr;
12064
12065 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12066 reason_code);
12067
12068 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12069 if (!msg)
12070 return;
12071
12072 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12073 if (!hdr) {
12074 nlmsg_free(msg);
12075 return;
12076 }
12077
12078 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12079 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12080 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12081 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12082 (reason_code > 0 &&
12083 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12084 goto nla_put_failure;
12085
12086 genlmsg_end(msg, hdr);
12087
12088 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12089 NL80211_MCGRP_MLME, gfp);
12090 return;
12091
12092 nla_put_failure:
12093 genlmsg_cancel(msg, hdr);
12094 nlmsg_free(msg);
12095 }
12096 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12097
12098 static int nl80211_netlink_notify(struct notifier_block * nb,
12099 unsigned long state,
12100 void *_notify)
12101 {
12102 struct netlink_notify *notify = _notify;
12103 struct cfg80211_registered_device *rdev;
12104 struct wireless_dev *wdev;
12105 struct cfg80211_beacon_registration *reg, *tmp;
12106
12107 if (state != NETLINK_URELEASE)
12108 return NOTIFY_DONE;
12109
12110 rcu_read_lock();
12111
12112 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12113 bool schedule_destroy_work = false;
12114
12115 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12116 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12117
12118 if (wdev->owner_nlportid == notify->portid)
12119 schedule_destroy_work = true;
12120 }
12121
12122 spin_lock_bh(&rdev->beacon_registrations_lock);
12123 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12124 list) {
12125 if (reg->nlportid == notify->portid) {
12126 list_del(&reg->list);
12127 kfree(reg);
12128 break;
12129 }
12130 }
12131 spin_unlock_bh(&rdev->beacon_registrations_lock);
12132
12133 if (schedule_destroy_work) {
12134 struct cfg80211_iface_destroy *destroy;
12135
12136 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12137 if (destroy) {
12138 destroy->nlportid = notify->portid;
12139 spin_lock(&rdev->destroy_list_lock);
12140 list_add(&destroy->list, &rdev->destroy_list);
12141 spin_unlock(&rdev->destroy_list_lock);
12142 schedule_work(&rdev->destroy_work);
12143 }
12144 }
12145 }
12146
12147 rcu_read_unlock();
12148
12149 return NOTIFY_OK;
12150 }
12151
12152 static struct notifier_block nl80211_netlink_notifier = {
12153 .notifier_call = nl80211_netlink_notify,
12154 };
12155
12156 void cfg80211_ft_event(struct net_device *netdev,
12157 struct cfg80211_ft_event_params *ft_event)
12158 {
12159 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12160 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12161 struct sk_buff *msg;
12162 void *hdr;
12163
12164 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12165
12166 if (!ft_event->target_ap)
12167 return;
12168
12169 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12170 if (!msg)
12171 return;
12172
12173 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12174 if (!hdr)
12175 goto out;
12176
12177 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12178 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12179 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12180 goto out;
12181
12182 if (ft_event->ies &&
12183 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12184 goto out;
12185 if (ft_event->ric_ies &&
12186 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12187 ft_event->ric_ies))
12188 goto out;
12189
12190 genlmsg_end(msg, hdr);
12191
12192 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12193 NL80211_MCGRP_MLME, GFP_KERNEL);
12194 return;
12195 out:
12196 nlmsg_free(msg);
12197 }
12198 EXPORT_SYMBOL(cfg80211_ft_event);
12199
12200 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12201 {
12202 struct cfg80211_registered_device *rdev;
12203 struct sk_buff *msg;
12204 void *hdr;
12205 u32 nlportid;
12206
12207 rdev = wiphy_to_rdev(wdev->wiphy);
12208 if (!rdev->crit_proto_nlportid)
12209 return;
12210
12211 nlportid = rdev->crit_proto_nlportid;
12212 rdev->crit_proto_nlportid = 0;
12213
12214 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12215 if (!msg)
12216 return;
12217
12218 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12219 if (!hdr)
12220 goto nla_put_failure;
12221
12222 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12223 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12224 goto nla_put_failure;
12225
12226 genlmsg_end(msg, hdr);
12227
12228 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12229 return;
12230
12231 nla_put_failure:
12232 if (hdr)
12233 genlmsg_cancel(msg, hdr);
12234 nlmsg_free(msg);
12235
12236 }
12237 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12238
12239 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12240 {
12241 struct wiphy *wiphy = wdev->wiphy;
12242 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12243 struct sk_buff *msg;
12244 void *hdr;
12245
12246 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12247 if (!msg)
12248 return;
12249
12250 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12251 if (!hdr)
12252 goto out;
12253
12254 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12255 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12256 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12257 goto out;
12258
12259 genlmsg_end(msg, hdr);
12260
12261 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12262 NL80211_MCGRP_MLME, GFP_KERNEL);
12263 return;
12264 out:
12265 nlmsg_free(msg);
12266 }
12267
12268 /* initialisation/exit functions */
12269
12270 int nl80211_init(void)
12271 {
12272 int err;
12273
12274 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12275 nl80211_mcgrps);
12276 if (err)
12277 return err;
12278
12279 err = netlink_register_notifier(&nl80211_netlink_notifier);
12280 if (err)
12281 goto err_out;
12282
12283 return 0;
12284 err_out:
12285 genl_unregister_family(&nl80211_fam);
12286 return err;
12287 }
12288
12289 void nl80211_exit(void)
12290 {
12291 netlink_unregister_notifier(&nl80211_netlink_notifier);
12292 genl_unregister_family(&nl80211_fam);
12293 }
Linux kernel - Deliverables
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