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Merge tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
[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 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = NL80211_GENL_NAME, /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* multicast groups */
51 enum nl80211_multicast_groups {
52 NL80211_MCGRP_CONFIG,
53 NL80211_MCGRP_SCAN,
54 NL80211_MCGRP_REGULATORY,
55 NL80211_MCGRP_MLME,
56 NL80211_MCGRP_VENDOR,
57 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
58 };
59
60 static const struct genl_multicast_group nl80211_mcgrps[] = {
61 [NL80211_MCGRP_CONFIG] = { .name = "config", },
62 [NL80211_MCGRP_SCAN] = { .name = "scan", },
63 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
64 [NL80211_MCGRP_MLME] = { .name = "mlme", },
65 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
66 #ifdef CONFIG_NL80211_TESTMODE
67 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
68 #endif
69 };
70
71 /* returns ERR_PTR values */
72 static struct wireless_dev *
73 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
74 {
75 struct cfg80211_registered_device *rdev;
76 struct wireless_dev *result = NULL;
77 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
78 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
79 u64 wdev_id;
80 int wiphy_idx = -1;
81 int ifidx = -1;
82
83 ASSERT_RTNL();
84
85 if (!have_ifidx && !have_wdev_id)
86 return ERR_PTR(-EINVAL);
87
88 if (have_ifidx)
89 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
90 if (have_wdev_id) {
91 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
92 wiphy_idx = wdev_id >> 32;
93 }
94
95 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
96 struct wireless_dev *wdev;
97
98 if (wiphy_net(&rdev->wiphy) != netns)
99 continue;
100
101 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
102 continue;
103
104 list_for_each_entry(wdev, &rdev->wdev_list, list) {
105 if (have_ifidx && wdev->netdev &&
106 wdev->netdev->ifindex == ifidx) {
107 result = wdev;
108 break;
109 }
110 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
111 result = wdev;
112 break;
113 }
114 }
115
116 if (result)
117 break;
118 }
119
120 if (result)
121 return result;
122 return ERR_PTR(-ENODEV);
123 }
124
125 static struct cfg80211_registered_device *
126 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
127 {
128 struct cfg80211_registered_device *rdev = NULL, *tmp;
129 struct net_device *netdev;
130
131 ASSERT_RTNL();
132
133 if (!attrs[NL80211_ATTR_WIPHY] &&
134 !attrs[NL80211_ATTR_IFINDEX] &&
135 !attrs[NL80211_ATTR_WDEV])
136 return ERR_PTR(-EINVAL);
137
138 if (attrs[NL80211_ATTR_WIPHY])
139 rdev = cfg80211_rdev_by_wiphy_idx(
140 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
141
142 if (attrs[NL80211_ATTR_WDEV]) {
143 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
144 struct wireless_dev *wdev;
145 bool found = false;
146
147 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
148 if (tmp) {
149 /* make sure wdev exists */
150 list_for_each_entry(wdev, &tmp->wdev_list, list) {
151 if (wdev->identifier != (u32)wdev_id)
152 continue;
153 found = true;
154 break;
155 }
156
157 if (!found)
158 tmp = NULL;
159
160 if (rdev && tmp != rdev)
161 return ERR_PTR(-EINVAL);
162 rdev = tmp;
163 }
164 }
165
166 if (attrs[NL80211_ATTR_IFINDEX]) {
167 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
168 netdev = __dev_get_by_index(netns, ifindex);
169 if (netdev) {
170 if (netdev->ieee80211_ptr)
171 tmp = wiphy_to_dev(
172 netdev->ieee80211_ptr->wiphy);
173 else
174 tmp = NULL;
175
176 /* not wireless device -- return error */
177 if (!tmp)
178 return ERR_PTR(-EINVAL);
179
180 /* mismatch -- return error */
181 if (rdev && tmp != rdev)
182 return ERR_PTR(-EINVAL);
183
184 rdev = tmp;
185 }
186 }
187
188 if (!rdev)
189 return ERR_PTR(-ENODEV);
190
191 if (netns != wiphy_net(&rdev->wiphy))
192 return ERR_PTR(-ENODEV);
193
194 return rdev;
195 }
196
197 /*
198 * This function returns a pointer to the driver
199 * that the genl_info item that is passed refers to.
200 *
201 * The result of this can be a PTR_ERR and hence must
202 * be checked with IS_ERR() for errors.
203 */
204 static struct cfg80211_registered_device *
205 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
206 {
207 return __cfg80211_rdev_from_attrs(netns, info->attrs);
208 }
209
210 /* policy for the attributes */
211 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
212 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
213 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
214 .len = 20-1 },
215 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
216
217 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
219 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
220 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
222
223 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
224 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
226 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
228
229 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
230 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
231 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
232
233 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
234 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
235
236 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
237 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
238 .len = WLAN_MAX_KEY_LEN },
239 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
240 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
241 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
242 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
243 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
244
245 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
246 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
247 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
248 .len = IEEE80211_MAX_DATA_LEN },
249 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
252 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
253 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
255 .len = NL80211_MAX_SUPP_RATES },
256 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
257 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
258 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
259 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
260 .len = IEEE80211_MAX_MESH_ID_LEN },
261 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
262
263 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
264 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
265
266 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
267 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
268 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
270 .len = NL80211_MAX_SUPP_RATES },
271 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
272
273 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
274 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
275
276 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
277
278 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
279 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
280 .len = IEEE80211_MAX_DATA_LEN },
281 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
282 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
283
284 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
285 .len = IEEE80211_MAX_SSID_LEN },
286 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
287 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
288 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
289 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
290 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
291 [NL80211_ATTR_STA_FLAGS2] = {
292 .len = sizeof(struct nl80211_sta_flag_update),
293 },
294 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
295 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
296 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
298 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
299 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
300 [NL80211_ATTR_PID] = { .type = NLA_U32 },
301 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
302 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
303 .len = WLAN_PMKID_LEN },
304 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
305 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
306 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
307 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
308 .len = IEEE80211_MAX_DATA_LEN },
309 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
310 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
311 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
312 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
313 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
314 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
315 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
316 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
317 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
318 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
319 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
320 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
321 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
322 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
323 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
324 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
325 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
326 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
327 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
328 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
329 .len = IEEE80211_MAX_DATA_LEN },
330 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
333 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
334 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
335 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
336 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
337 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
339 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
340 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
341 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
342 .len = IEEE80211_MAX_DATA_LEN },
343 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
344 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
345 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
346 .len = NL80211_HT_CAPABILITY_LEN
347 },
348 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
349 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
350 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
351 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
352 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
353 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
354 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
355 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
356 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
357 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
358 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
359 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
360 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
361 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
362 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
363 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
364 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
365 .len = NL80211_VHT_CAPABILITY_LEN,
366 },
367 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
368 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
369 .len = IEEE80211_MAX_DATA_LEN },
370 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
371 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
372 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
373 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
374 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
375 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
376 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
377 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
378 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
379 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
380 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
381 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
382 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
383 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
384 .len = IEEE80211_QOS_MAP_LEN_MAX },
385 };
386
387 /* policy for the key attributes */
388 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
389 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
390 [NL80211_KEY_IDX] = { .type = NLA_U8 },
391 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
392 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
393 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
394 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
395 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
396 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
397 };
398
399 /* policy for the key default flags */
400 static const struct nla_policy
401 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
402 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
403 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
404 };
405
406 /* policy for WoWLAN attributes */
407 static const struct nla_policy
408 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
409 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
410 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
411 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
412 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
413 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
414 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
415 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
416 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
417 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
418 };
419
420 static const struct nla_policy
421 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
422 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
423 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
424 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
425 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
426 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
427 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
428 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
429 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
430 },
431 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
432 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
433 },
434 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
435 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
436 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
437 };
438
439 /* policy for coalesce rule attributes */
440 static const struct nla_policy
441 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
442 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
443 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
444 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
445 };
446
447 /* policy for GTK rekey offload attributes */
448 static const struct nla_policy
449 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
450 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
451 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
452 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
453 };
454
455 static const struct nla_policy
456 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
457 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
458 .len = IEEE80211_MAX_SSID_LEN },
459 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
460 };
461
462 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
463 struct netlink_callback *cb,
464 struct cfg80211_registered_device **rdev,
465 struct wireless_dev **wdev)
466 {
467 int err;
468
469 rtnl_lock();
470
471 if (!cb->args[0]) {
472 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
473 nl80211_fam.attrbuf, nl80211_fam.maxattr,
474 nl80211_policy);
475 if (err)
476 goto out_unlock;
477
478 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
479 nl80211_fam.attrbuf);
480 if (IS_ERR(*wdev)) {
481 err = PTR_ERR(*wdev);
482 goto out_unlock;
483 }
484 *rdev = wiphy_to_dev((*wdev)->wiphy);
485 /* 0 is the first index - add 1 to parse only once */
486 cb->args[0] = (*rdev)->wiphy_idx + 1;
487 cb->args[1] = (*wdev)->identifier;
488 } else {
489 /* subtract the 1 again here */
490 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
491 struct wireless_dev *tmp;
492
493 if (!wiphy) {
494 err = -ENODEV;
495 goto out_unlock;
496 }
497 *rdev = wiphy_to_dev(wiphy);
498 *wdev = NULL;
499
500 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
501 if (tmp->identifier == cb->args[1]) {
502 *wdev = tmp;
503 break;
504 }
505 }
506
507 if (!*wdev) {
508 err = -ENODEV;
509 goto out_unlock;
510 }
511 }
512
513 return 0;
514 out_unlock:
515 rtnl_unlock();
516 return err;
517 }
518
519 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
520 {
521 rtnl_unlock();
522 }
523
524 /* IE validation */
525 static bool is_valid_ie_attr(const struct nlattr *attr)
526 {
527 const u8 *pos;
528 int len;
529
530 if (!attr)
531 return true;
532
533 pos = nla_data(attr);
534 len = nla_len(attr);
535
536 while (len) {
537 u8 elemlen;
538
539 if (len < 2)
540 return false;
541 len -= 2;
542
543 elemlen = pos[1];
544 if (elemlen > len)
545 return false;
546
547 len -= elemlen;
548 pos += 2 + elemlen;
549 }
550
551 return true;
552 }
553
554 /* message building helper */
555 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
556 int flags, u8 cmd)
557 {
558 /* since there is no private header just add the generic one */
559 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
560 }
561
562 static int nl80211_msg_put_channel(struct sk_buff *msg,
563 struct ieee80211_channel *chan,
564 bool large)
565 {
566 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
567 chan->center_freq))
568 goto nla_put_failure;
569
570 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
571 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
572 goto nla_put_failure;
573 if (chan->flags & IEEE80211_CHAN_NO_IR) {
574 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
575 goto nla_put_failure;
576 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
577 goto nla_put_failure;
578 }
579 if (chan->flags & IEEE80211_CHAN_RADAR) {
580 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
581 goto nla_put_failure;
582 if (large) {
583 u32 time;
584
585 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
586
587 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
588 chan->dfs_state))
589 goto nla_put_failure;
590 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
591 time))
592 goto nla_put_failure;
593 }
594 }
595
596 if (large) {
597 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
598 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
599 goto nla_put_failure;
600 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
601 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
602 goto nla_put_failure;
603 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
604 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
605 goto nla_put_failure;
606 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
607 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
608 goto nla_put_failure;
609 }
610
611 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
612 DBM_TO_MBM(chan->max_power)))
613 goto nla_put_failure;
614
615 return 0;
616
617 nla_put_failure:
618 return -ENOBUFS;
619 }
620
621 /* netlink command implementations */
622
623 struct key_parse {
624 struct key_params p;
625 int idx;
626 int type;
627 bool def, defmgmt;
628 bool def_uni, def_multi;
629 };
630
631 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
632 {
633 struct nlattr *tb[NL80211_KEY_MAX + 1];
634 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
635 nl80211_key_policy);
636 if (err)
637 return err;
638
639 k->def = !!tb[NL80211_KEY_DEFAULT];
640 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
641
642 if (k->def) {
643 k->def_uni = true;
644 k->def_multi = true;
645 }
646 if (k->defmgmt)
647 k->def_multi = true;
648
649 if (tb[NL80211_KEY_IDX])
650 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
651
652 if (tb[NL80211_KEY_DATA]) {
653 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
654 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
655 }
656
657 if (tb[NL80211_KEY_SEQ]) {
658 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
659 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
660 }
661
662 if (tb[NL80211_KEY_CIPHER])
663 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
664
665 if (tb[NL80211_KEY_TYPE]) {
666 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
667 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
668 return -EINVAL;
669 }
670
671 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
672 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
673 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
674 tb[NL80211_KEY_DEFAULT_TYPES],
675 nl80211_key_default_policy);
676 if (err)
677 return err;
678
679 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
680 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
681 }
682
683 return 0;
684 }
685
686 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
687 {
688 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
689 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
690 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
691 }
692
693 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
694 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
695 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
696 }
697
698 if (info->attrs[NL80211_ATTR_KEY_IDX])
699 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
700
701 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
702 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
703
704 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
705 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
706
707 if (k->def) {
708 k->def_uni = true;
709 k->def_multi = true;
710 }
711 if (k->defmgmt)
712 k->def_multi = true;
713
714 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
715 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
716 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
717 return -EINVAL;
718 }
719
720 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
721 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
722 int err = nla_parse_nested(
723 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
724 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
725 nl80211_key_default_policy);
726 if (err)
727 return err;
728
729 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
730 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
731 }
732
733 return 0;
734 }
735
736 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
737 {
738 int err;
739
740 memset(k, 0, sizeof(*k));
741 k->idx = -1;
742 k->type = -1;
743
744 if (info->attrs[NL80211_ATTR_KEY])
745 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
746 else
747 err = nl80211_parse_key_old(info, k);
748
749 if (err)
750 return err;
751
752 if (k->def && k->defmgmt)
753 return -EINVAL;
754
755 if (k->defmgmt) {
756 if (k->def_uni || !k->def_multi)
757 return -EINVAL;
758 }
759
760 if (k->idx != -1) {
761 if (k->defmgmt) {
762 if (k->idx < 4 || k->idx > 5)
763 return -EINVAL;
764 } else if (k->def) {
765 if (k->idx < 0 || k->idx > 3)
766 return -EINVAL;
767 } else {
768 if (k->idx < 0 || k->idx > 5)
769 return -EINVAL;
770 }
771 }
772
773 return 0;
774 }
775
776 static struct cfg80211_cached_keys *
777 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
778 struct nlattr *keys, bool *no_ht)
779 {
780 struct key_parse parse;
781 struct nlattr *key;
782 struct cfg80211_cached_keys *result;
783 int rem, err, def = 0;
784
785 result = kzalloc(sizeof(*result), GFP_KERNEL);
786 if (!result)
787 return ERR_PTR(-ENOMEM);
788
789 result->def = -1;
790 result->defmgmt = -1;
791
792 nla_for_each_nested(key, keys, rem) {
793 memset(&parse, 0, sizeof(parse));
794 parse.idx = -1;
795
796 err = nl80211_parse_key_new(key, &parse);
797 if (err)
798 goto error;
799 err = -EINVAL;
800 if (!parse.p.key)
801 goto error;
802 if (parse.idx < 0 || parse.idx > 4)
803 goto error;
804 if (parse.def) {
805 if (def)
806 goto error;
807 def = 1;
808 result->def = parse.idx;
809 if (!parse.def_uni || !parse.def_multi)
810 goto error;
811 } else if (parse.defmgmt)
812 goto error;
813 err = cfg80211_validate_key_settings(rdev, &parse.p,
814 parse.idx, false, NULL);
815 if (err)
816 goto error;
817 result->params[parse.idx].cipher = parse.p.cipher;
818 result->params[parse.idx].key_len = parse.p.key_len;
819 result->params[parse.idx].key = result->data[parse.idx];
820 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
821
822 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
823 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
824 if (no_ht)
825 *no_ht = true;
826 }
827 }
828
829 return result;
830 error:
831 kfree(result);
832 return ERR_PTR(err);
833 }
834
835 static int nl80211_key_allowed(struct wireless_dev *wdev)
836 {
837 ASSERT_WDEV_LOCK(wdev);
838
839 switch (wdev->iftype) {
840 case NL80211_IFTYPE_AP:
841 case NL80211_IFTYPE_AP_VLAN:
842 case NL80211_IFTYPE_P2P_GO:
843 case NL80211_IFTYPE_MESH_POINT:
844 break;
845 case NL80211_IFTYPE_ADHOC:
846 case NL80211_IFTYPE_STATION:
847 case NL80211_IFTYPE_P2P_CLIENT:
848 if (!wdev->current_bss)
849 return -ENOLINK;
850 break;
851 default:
852 return -EINVAL;
853 }
854
855 return 0;
856 }
857
858 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
859 {
860 struct nlattr *nl_modes = nla_nest_start(msg, attr);
861 int i;
862
863 if (!nl_modes)
864 goto nla_put_failure;
865
866 i = 0;
867 while (ifmodes) {
868 if ((ifmodes & 1) && nla_put_flag(msg, i))
869 goto nla_put_failure;
870 ifmodes >>= 1;
871 i++;
872 }
873
874 nla_nest_end(msg, nl_modes);
875 return 0;
876
877 nla_put_failure:
878 return -ENOBUFS;
879 }
880
881 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
882 struct sk_buff *msg,
883 bool large)
884 {
885 struct nlattr *nl_combis;
886 int i, j;
887
888 nl_combis = nla_nest_start(msg,
889 NL80211_ATTR_INTERFACE_COMBINATIONS);
890 if (!nl_combis)
891 goto nla_put_failure;
892
893 for (i = 0; i < wiphy->n_iface_combinations; i++) {
894 const struct ieee80211_iface_combination *c;
895 struct nlattr *nl_combi, *nl_limits;
896
897 c = &wiphy->iface_combinations[i];
898
899 nl_combi = nla_nest_start(msg, i + 1);
900 if (!nl_combi)
901 goto nla_put_failure;
902
903 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
904 if (!nl_limits)
905 goto nla_put_failure;
906
907 for (j = 0; j < c->n_limits; j++) {
908 struct nlattr *nl_limit;
909
910 nl_limit = nla_nest_start(msg, j + 1);
911 if (!nl_limit)
912 goto nla_put_failure;
913 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
914 c->limits[j].max))
915 goto nla_put_failure;
916 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
917 c->limits[j].types))
918 goto nla_put_failure;
919 nla_nest_end(msg, nl_limit);
920 }
921
922 nla_nest_end(msg, nl_limits);
923
924 if (c->beacon_int_infra_match &&
925 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
926 goto nla_put_failure;
927 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
928 c->num_different_channels) ||
929 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
930 c->max_interfaces))
931 goto nla_put_failure;
932 if (large &&
933 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
934 c->radar_detect_widths))
935 goto nla_put_failure;
936
937 nla_nest_end(msg, nl_combi);
938 }
939
940 nla_nest_end(msg, nl_combis);
941
942 return 0;
943 nla_put_failure:
944 return -ENOBUFS;
945 }
946
947 #ifdef CONFIG_PM
948 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
949 struct sk_buff *msg)
950 {
951 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
952 struct nlattr *nl_tcp;
953
954 if (!tcp)
955 return 0;
956
957 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
958 if (!nl_tcp)
959 return -ENOBUFS;
960
961 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
962 tcp->data_payload_max))
963 return -ENOBUFS;
964
965 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
966 tcp->data_payload_max))
967 return -ENOBUFS;
968
969 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
970 return -ENOBUFS;
971
972 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
973 sizeof(*tcp->tok), tcp->tok))
974 return -ENOBUFS;
975
976 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
977 tcp->data_interval_max))
978 return -ENOBUFS;
979
980 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
981 tcp->wake_payload_max))
982 return -ENOBUFS;
983
984 nla_nest_end(msg, nl_tcp);
985 return 0;
986 }
987
988 static int nl80211_send_wowlan(struct sk_buff *msg,
989 struct cfg80211_registered_device *dev,
990 bool large)
991 {
992 struct nlattr *nl_wowlan;
993
994 if (!dev->wiphy.wowlan)
995 return 0;
996
997 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
998 if (!nl_wowlan)
999 return -ENOBUFS;
1000
1001 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1002 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1003 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1004 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1005 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1006 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1007 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1008 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1009 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1010 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1011 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1012 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1013 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1014 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1015 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1016 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1017 return -ENOBUFS;
1018
1019 if (dev->wiphy.wowlan->n_patterns) {
1020 struct nl80211_pattern_support pat = {
1021 .max_patterns = dev->wiphy.wowlan->n_patterns,
1022 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
1023 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
1024 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1025 };
1026
1027 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1028 sizeof(pat), &pat))
1029 return -ENOBUFS;
1030 }
1031
1032 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1033 return -ENOBUFS;
1034
1035 nla_nest_end(msg, nl_wowlan);
1036
1037 return 0;
1038 }
1039 #endif
1040
1041 static int nl80211_send_coalesce(struct sk_buff *msg,
1042 struct cfg80211_registered_device *dev)
1043 {
1044 struct nl80211_coalesce_rule_support rule;
1045
1046 if (!dev->wiphy.coalesce)
1047 return 0;
1048
1049 rule.max_rules = dev->wiphy.coalesce->n_rules;
1050 rule.max_delay = dev->wiphy.coalesce->max_delay;
1051 rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1052 rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1053 rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1054 rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1055
1056 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1057 return -ENOBUFS;
1058
1059 return 0;
1060 }
1061
1062 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1063 struct ieee80211_supported_band *sband)
1064 {
1065 struct nlattr *nl_rates, *nl_rate;
1066 struct ieee80211_rate *rate;
1067 int i;
1068
1069 /* add HT info */
1070 if (sband->ht_cap.ht_supported &&
1071 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1072 sizeof(sband->ht_cap.mcs),
1073 &sband->ht_cap.mcs) ||
1074 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1075 sband->ht_cap.cap) ||
1076 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1077 sband->ht_cap.ampdu_factor) ||
1078 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1079 sband->ht_cap.ampdu_density)))
1080 return -ENOBUFS;
1081
1082 /* add VHT info */
1083 if (sband->vht_cap.vht_supported &&
1084 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1085 sizeof(sband->vht_cap.vht_mcs),
1086 &sband->vht_cap.vht_mcs) ||
1087 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1088 sband->vht_cap.cap)))
1089 return -ENOBUFS;
1090
1091 /* add bitrates */
1092 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1093 if (!nl_rates)
1094 return -ENOBUFS;
1095
1096 for (i = 0; i < sband->n_bitrates; i++) {
1097 nl_rate = nla_nest_start(msg, i);
1098 if (!nl_rate)
1099 return -ENOBUFS;
1100
1101 rate = &sband->bitrates[i];
1102 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1103 rate->bitrate))
1104 return -ENOBUFS;
1105 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1106 nla_put_flag(msg,
1107 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1108 return -ENOBUFS;
1109
1110 nla_nest_end(msg, nl_rate);
1111 }
1112
1113 nla_nest_end(msg, nl_rates);
1114
1115 return 0;
1116 }
1117
1118 static int
1119 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1120 const struct ieee80211_txrx_stypes *mgmt_stypes)
1121 {
1122 u16 stypes;
1123 struct nlattr *nl_ftypes, *nl_ifs;
1124 enum nl80211_iftype ift;
1125 int i;
1126
1127 if (!mgmt_stypes)
1128 return 0;
1129
1130 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1131 if (!nl_ifs)
1132 return -ENOBUFS;
1133
1134 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1135 nl_ftypes = nla_nest_start(msg, ift);
1136 if (!nl_ftypes)
1137 return -ENOBUFS;
1138 i = 0;
1139 stypes = mgmt_stypes[ift].tx;
1140 while (stypes) {
1141 if ((stypes & 1) &&
1142 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1143 (i << 4) | IEEE80211_FTYPE_MGMT))
1144 return -ENOBUFS;
1145 stypes >>= 1;
1146 i++;
1147 }
1148 nla_nest_end(msg, nl_ftypes);
1149 }
1150
1151 nla_nest_end(msg, nl_ifs);
1152
1153 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1154 if (!nl_ifs)
1155 return -ENOBUFS;
1156
1157 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1158 nl_ftypes = nla_nest_start(msg, ift);
1159 if (!nl_ftypes)
1160 return -ENOBUFS;
1161 i = 0;
1162 stypes = mgmt_stypes[ift].rx;
1163 while (stypes) {
1164 if ((stypes & 1) &&
1165 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1166 (i << 4) | IEEE80211_FTYPE_MGMT))
1167 return -ENOBUFS;
1168 stypes >>= 1;
1169 i++;
1170 }
1171 nla_nest_end(msg, nl_ftypes);
1172 }
1173 nla_nest_end(msg, nl_ifs);
1174
1175 return 0;
1176 }
1177
1178 struct nl80211_dump_wiphy_state {
1179 s64 filter_wiphy;
1180 long start;
1181 long split_start, band_start, chan_start;
1182 bool split;
1183 };
1184
1185 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1186 struct sk_buff *msg, u32 portid, u32 seq,
1187 int flags, struct nl80211_dump_wiphy_state *state)
1188 {
1189 void *hdr;
1190 struct nlattr *nl_bands, *nl_band;
1191 struct nlattr *nl_freqs, *nl_freq;
1192 struct nlattr *nl_cmds;
1193 enum ieee80211_band band;
1194 struct ieee80211_channel *chan;
1195 int i;
1196 const struct ieee80211_txrx_stypes *mgmt_stypes =
1197 dev->wiphy.mgmt_stypes;
1198 u32 features;
1199
1200 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1201 if (!hdr)
1202 return -ENOBUFS;
1203
1204 if (WARN_ON(!state))
1205 return -EINVAL;
1206
1207 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1208 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1209 wiphy_name(&dev->wiphy)) ||
1210 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1211 cfg80211_rdev_list_generation))
1212 goto nla_put_failure;
1213
1214 switch (state->split_start) {
1215 case 0:
1216 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1217 dev->wiphy.retry_short) ||
1218 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1219 dev->wiphy.retry_long) ||
1220 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1221 dev->wiphy.frag_threshold) ||
1222 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1223 dev->wiphy.rts_threshold) ||
1224 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1225 dev->wiphy.coverage_class) ||
1226 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1227 dev->wiphy.max_scan_ssids) ||
1228 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1229 dev->wiphy.max_sched_scan_ssids) ||
1230 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1231 dev->wiphy.max_scan_ie_len) ||
1232 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1233 dev->wiphy.max_sched_scan_ie_len) ||
1234 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1235 dev->wiphy.max_match_sets))
1236 goto nla_put_failure;
1237
1238 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1239 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1240 goto nla_put_failure;
1241 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1242 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1243 goto nla_put_failure;
1244 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1245 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1246 goto nla_put_failure;
1247 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1248 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1249 goto nla_put_failure;
1250 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1251 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1252 goto nla_put_failure;
1253 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1254 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1255 goto nla_put_failure;
1256 state->split_start++;
1257 if (state->split)
1258 break;
1259 case 1:
1260 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1261 sizeof(u32) * dev->wiphy.n_cipher_suites,
1262 dev->wiphy.cipher_suites))
1263 goto nla_put_failure;
1264
1265 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1266 dev->wiphy.max_num_pmkids))
1267 goto nla_put_failure;
1268
1269 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1270 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1271 goto nla_put_failure;
1272
1273 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1274 dev->wiphy.available_antennas_tx) ||
1275 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1276 dev->wiphy.available_antennas_rx))
1277 goto nla_put_failure;
1278
1279 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1280 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1281 dev->wiphy.probe_resp_offload))
1282 goto nla_put_failure;
1283
1284 if ((dev->wiphy.available_antennas_tx ||
1285 dev->wiphy.available_antennas_rx) &&
1286 dev->ops->get_antenna) {
1287 u32 tx_ant = 0, rx_ant = 0;
1288 int res;
1289 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1290 if (!res) {
1291 if (nla_put_u32(msg,
1292 NL80211_ATTR_WIPHY_ANTENNA_TX,
1293 tx_ant) ||
1294 nla_put_u32(msg,
1295 NL80211_ATTR_WIPHY_ANTENNA_RX,
1296 rx_ant))
1297 goto nla_put_failure;
1298 }
1299 }
1300
1301 state->split_start++;
1302 if (state->split)
1303 break;
1304 case 2:
1305 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1306 dev->wiphy.interface_modes))
1307 goto nla_put_failure;
1308 state->split_start++;
1309 if (state->split)
1310 break;
1311 case 3:
1312 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1313 if (!nl_bands)
1314 goto nla_put_failure;
1315
1316 for (band = state->band_start;
1317 band < IEEE80211_NUM_BANDS; band++) {
1318 struct ieee80211_supported_band *sband;
1319
1320 sband = dev->wiphy.bands[band];
1321
1322 if (!sband)
1323 continue;
1324
1325 nl_band = nla_nest_start(msg, band);
1326 if (!nl_band)
1327 goto nla_put_failure;
1328
1329 switch (state->chan_start) {
1330 case 0:
1331 if (nl80211_send_band_rateinfo(msg, sband))
1332 goto nla_put_failure;
1333 state->chan_start++;
1334 if (state->split)
1335 break;
1336 default:
1337 /* add frequencies */
1338 nl_freqs = nla_nest_start(
1339 msg, NL80211_BAND_ATTR_FREQS);
1340 if (!nl_freqs)
1341 goto nla_put_failure;
1342
1343 for (i = state->chan_start - 1;
1344 i < sband->n_channels;
1345 i++) {
1346 nl_freq = nla_nest_start(msg, i);
1347 if (!nl_freq)
1348 goto nla_put_failure;
1349
1350 chan = &sband->channels[i];
1351
1352 if (nl80211_msg_put_channel(
1353 msg, chan,
1354 state->split))
1355 goto nla_put_failure;
1356
1357 nla_nest_end(msg, nl_freq);
1358 if (state->split)
1359 break;
1360 }
1361 if (i < sband->n_channels)
1362 state->chan_start = i + 2;
1363 else
1364 state->chan_start = 0;
1365 nla_nest_end(msg, nl_freqs);
1366 }
1367
1368 nla_nest_end(msg, nl_band);
1369
1370 if (state->split) {
1371 /* start again here */
1372 if (state->chan_start)
1373 band--;
1374 break;
1375 }
1376 }
1377 nla_nest_end(msg, nl_bands);
1378
1379 if (band < IEEE80211_NUM_BANDS)
1380 state->band_start = band + 1;
1381 else
1382 state->band_start = 0;
1383
1384 /* if bands & channels are done, continue outside */
1385 if (state->band_start == 0 && state->chan_start == 0)
1386 state->split_start++;
1387 if (state->split)
1388 break;
1389 case 4:
1390 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1391 if (!nl_cmds)
1392 goto nla_put_failure;
1393
1394 i = 0;
1395 #define CMD(op, n) \
1396 do { \
1397 if (dev->ops->op) { \
1398 i++; \
1399 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1400 goto nla_put_failure; \
1401 } \
1402 } while (0)
1403
1404 CMD(add_virtual_intf, NEW_INTERFACE);
1405 CMD(change_virtual_intf, SET_INTERFACE);
1406 CMD(add_key, NEW_KEY);
1407 CMD(start_ap, START_AP);
1408 CMD(add_station, NEW_STATION);
1409 CMD(add_mpath, NEW_MPATH);
1410 CMD(update_mesh_config, SET_MESH_CONFIG);
1411 CMD(change_bss, SET_BSS);
1412 CMD(auth, AUTHENTICATE);
1413 CMD(assoc, ASSOCIATE);
1414 CMD(deauth, DEAUTHENTICATE);
1415 CMD(disassoc, DISASSOCIATE);
1416 CMD(join_ibss, JOIN_IBSS);
1417 CMD(join_mesh, JOIN_MESH);
1418 CMD(set_pmksa, SET_PMKSA);
1419 CMD(del_pmksa, DEL_PMKSA);
1420 CMD(flush_pmksa, FLUSH_PMKSA);
1421 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1422 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1423 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1424 CMD(mgmt_tx, FRAME);
1425 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1426 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1427 i++;
1428 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1429 goto nla_put_failure;
1430 }
1431 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1432 dev->ops->join_mesh) {
1433 i++;
1434 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1435 goto nla_put_failure;
1436 }
1437 CMD(set_wds_peer, SET_WDS_PEER);
1438 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1439 CMD(tdls_mgmt, TDLS_MGMT);
1440 CMD(tdls_oper, TDLS_OPER);
1441 }
1442 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1443 CMD(sched_scan_start, START_SCHED_SCAN);
1444 CMD(probe_client, PROBE_CLIENT);
1445 CMD(set_noack_map, SET_NOACK_MAP);
1446 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1447 i++;
1448 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1449 goto nla_put_failure;
1450 }
1451 CMD(start_p2p_device, START_P2P_DEVICE);
1452 CMD(set_mcast_rate, SET_MCAST_RATE);
1453 if (state->split) {
1454 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1455 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1456 if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1457 CMD(channel_switch, CHANNEL_SWITCH);
1458 }
1459 CMD(set_qos_map, SET_QOS_MAP);
1460
1461 #ifdef CONFIG_NL80211_TESTMODE
1462 CMD(testmode_cmd, TESTMODE);
1463 #endif
1464
1465 #undef CMD
1466
1467 if (dev->ops->connect || dev->ops->auth) {
1468 i++;
1469 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1470 goto nla_put_failure;
1471 }
1472
1473 if (dev->ops->disconnect || dev->ops->deauth) {
1474 i++;
1475 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1476 goto nla_put_failure;
1477 }
1478
1479 nla_nest_end(msg, nl_cmds);
1480 state->split_start++;
1481 if (state->split)
1482 break;
1483 case 5:
1484 if (dev->ops->remain_on_channel &&
1485 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1486 nla_put_u32(msg,
1487 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1488 dev->wiphy.max_remain_on_channel_duration))
1489 goto nla_put_failure;
1490
1491 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1492 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1493 goto nla_put_failure;
1494
1495 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1496 goto nla_put_failure;
1497 state->split_start++;
1498 if (state->split)
1499 break;
1500 case 6:
1501 #ifdef CONFIG_PM
1502 if (nl80211_send_wowlan(msg, dev, state->split))
1503 goto nla_put_failure;
1504 state->split_start++;
1505 if (state->split)
1506 break;
1507 #else
1508 state->split_start++;
1509 #endif
1510 case 7:
1511 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1512 dev->wiphy.software_iftypes))
1513 goto nla_put_failure;
1514
1515 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1516 state->split))
1517 goto nla_put_failure;
1518
1519 state->split_start++;
1520 if (state->split)
1521 break;
1522 case 8:
1523 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1524 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1525 dev->wiphy.ap_sme_capa))
1526 goto nla_put_failure;
1527
1528 features = dev->wiphy.features;
1529 /*
1530 * We can only add the per-channel limit information if the
1531 * dump is split, otherwise it makes it too big. Therefore
1532 * only advertise it in that case.
1533 */
1534 if (state->split)
1535 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1536 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1537 goto nla_put_failure;
1538
1539 if (dev->wiphy.ht_capa_mod_mask &&
1540 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1541 sizeof(*dev->wiphy.ht_capa_mod_mask),
1542 dev->wiphy.ht_capa_mod_mask))
1543 goto nla_put_failure;
1544
1545 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1546 dev->wiphy.max_acl_mac_addrs &&
1547 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1548 dev->wiphy.max_acl_mac_addrs))
1549 goto nla_put_failure;
1550
1551 /*
1552 * Any information below this point is only available to
1553 * applications that can deal with it being split. This
1554 * helps ensure that newly added capabilities don't break
1555 * older tools by overrunning their buffers.
1556 *
1557 * We still increment split_start so that in the split
1558 * case we'll continue with more data in the next round,
1559 * but break unconditionally so unsplit data stops here.
1560 */
1561 state->split_start++;
1562 break;
1563 case 9:
1564 if (dev->wiphy.extended_capabilities &&
1565 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1566 dev->wiphy.extended_capabilities_len,
1567 dev->wiphy.extended_capabilities) ||
1568 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1569 dev->wiphy.extended_capabilities_len,
1570 dev->wiphy.extended_capabilities_mask)))
1571 goto nla_put_failure;
1572
1573 if (dev->wiphy.vht_capa_mod_mask &&
1574 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1575 sizeof(*dev->wiphy.vht_capa_mod_mask),
1576 dev->wiphy.vht_capa_mod_mask))
1577 goto nla_put_failure;
1578
1579 state->split_start++;
1580 break;
1581 case 10:
1582 if (nl80211_send_coalesce(msg, dev))
1583 goto nla_put_failure;
1584
1585 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1586 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1587 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1588 goto nla_put_failure;
1589 state->split_start++;
1590 break;
1591 case 11:
1592 if (dev->wiphy.n_vendor_commands) {
1593 const struct nl80211_vendor_cmd_info *info;
1594 struct nlattr *nested;
1595
1596 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1597 if (!nested)
1598 goto nla_put_failure;
1599
1600 for (i = 0; i < dev->wiphy.n_vendor_commands; i++) {
1601 info = &dev->wiphy.vendor_commands[i].info;
1602 if (nla_put(msg, i + 1, sizeof(*info), info))
1603 goto nla_put_failure;
1604 }
1605 nla_nest_end(msg, nested);
1606 }
1607
1608 if (dev->wiphy.n_vendor_events) {
1609 const struct nl80211_vendor_cmd_info *info;
1610 struct nlattr *nested;
1611
1612 nested = nla_nest_start(msg,
1613 NL80211_ATTR_VENDOR_EVENTS);
1614 if (!nested)
1615 goto nla_put_failure;
1616
1617 for (i = 0; i < dev->wiphy.n_vendor_events; i++) {
1618 info = &dev->wiphy.vendor_events[i];
1619 if (nla_put(msg, i + 1, sizeof(*info), info))
1620 goto nla_put_failure;
1621 }
1622 nla_nest_end(msg, nested);
1623 }
1624
1625 /* done */
1626 state->split_start = 0;
1627 break;
1628 }
1629 return genlmsg_end(msg, hdr);
1630
1631 nla_put_failure:
1632 genlmsg_cancel(msg, hdr);
1633 return -EMSGSIZE;
1634 }
1635
1636 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1637 struct netlink_callback *cb,
1638 struct nl80211_dump_wiphy_state *state)
1639 {
1640 struct nlattr **tb = nl80211_fam.attrbuf;
1641 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1642 tb, nl80211_fam.maxattr, nl80211_policy);
1643 /* ignore parse errors for backward compatibility */
1644 if (ret)
1645 return 0;
1646
1647 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1648 if (tb[NL80211_ATTR_WIPHY])
1649 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1650 if (tb[NL80211_ATTR_WDEV])
1651 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1652 if (tb[NL80211_ATTR_IFINDEX]) {
1653 struct net_device *netdev;
1654 struct cfg80211_registered_device *rdev;
1655 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1656
1657 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1658 if (!netdev)
1659 return -ENODEV;
1660 if (netdev->ieee80211_ptr) {
1661 rdev = wiphy_to_dev(
1662 netdev->ieee80211_ptr->wiphy);
1663 state->filter_wiphy = rdev->wiphy_idx;
1664 }
1665 }
1666
1667 return 0;
1668 }
1669
1670 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1671 {
1672 int idx = 0, ret;
1673 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1674 struct cfg80211_registered_device *dev;
1675
1676 rtnl_lock();
1677 if (!state) {
1678 state = kzalloc(sizeof(*state), GFP_KERNEL);
1679 if (!state) {
1680 rtnl_unlock();
1681 return -ENOMEM;
1682 }
1683 state->filter_wiphy = -1;
1684 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1685 if (ret) {
1686 kfree(state);
1687 rtnl_unlock();
1688 return ret;
1689 }
1690 cb->args[0] = (long)state;
1691 }
1692
1693 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1694 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1695 continue;
1696 if (++idx <= state->start)
1697 continue;
1698 if (state->filter_wiphy != -1 &&
1699 state->filter_wiphy != dev->wiphy_idx)
1700 continue;
1701 /* attempt to fit multiple wiphy data chunks into the skb */
1702 do {
1703 ret = nl80211_send_wiphy(dev, skb,
1704 NETLINK_CB(cb->skb).portid,
1705 cb->nlh->nlmsg_seq,
1706 NLM_F_MULTI, state);
1707 if (ret < 0) {
1708 /*
1709 * If sending the wiphy data didn't fit (ENOBUFS
1710 * or EMSGSIZE returned), this SKB is still
1711 * empty (so it's not too big because another
1712 * wiphy dataset is already in the skb) and
1713 * we've not tried to adjust the dump allocation
1714 * yet ... then adjust the alloc size to be
1715 * bigger, and return 1 but with the empty skb.
1716 * This results in an empty message being RX'ed
1717 * in userspace, but that is ignored.
1718 *
1719 * We can then retry with the larger buffer.
1720 */
1721 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1722 !skb->len && !state->split &&
1723 cb->min_dump_alloc < 4096) {
1724 cb->min_dump_alloc = 4096;
1725 state->split_start = 0;
1726 rtnl_unlock();
1727 return 1;
1728 }
1729 idx--;
1730 break;
1731 }
1732 } while (state->split_start > 0);
1733 break;
1734 }
1735 rtnl_unlock();
1736
1737 state->start = idx;
1738
1739 return skb->len;
1740 }
1741
1742 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1743 {
1744 kfree((void *)cb->args[0]);
1745 return 0;
1746 }
1747
1748 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1749 {
1750 struct sk_buff *msg;
1751 struct cfg80211_registered_device *dev = info->user_ptr[0];
1752 struct nl80211_dump_wiphy_state state = {};
1753
1754 msg = nlmsg_new(4096, GFP_KERNEL);
1755 if (!msg)
1756 return -ENOMEM;
1757
1758 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1759 &state) < 0) {
1760 nlmsg_free(msg);
1761 return -ENOBUFS;
1762 }
1763
1764 return genlmsg_reply(msg, info);
1765 }
1766
1767 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1768 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1769 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1770 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1771 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1772 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1773 };
1774
1775 static int parse_txq_params(struct nlattr *tb[],
1776 struct ieee80211_txq_params *txq_params)
1777 {
1778 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1779 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1780 !tb[NL80211_TXQ_ATTR_AIFS])
1781 return -EINVAL;
1782
1783 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1784 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1785 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1786 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1787 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1788
1789 if (txq_params->ac >= NL80211_NUM_ACS)
1790 return -EINVAL;
1791
1792 return 0;
1793 }
1794
1795 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1796 {
1797 /*
1798 * You can only set the channel explicitly for WDS interfaces,
1799 * all others have their channel managed via their respective
1800 * "establish a connection" command (connect, join, ...)
1801 *
1802 * For AP/GO and mesh mode, the channel can be set with the
1803 * channel userspace API, but is only stored and passed to the
1804 * low-level driver when the AP starts or the mesh is joined.
1805 * This is for backward compatibility, userspace can also give
1806 * the channel in the start-ap or join-mesh commands instead.
1807 *
1808 * Monitors are special as they are normally slaved to
1809 * whatever else is going on, so they have their own special
1810 * operation to set the monitor channel if possible.
1811 */
1812 return !wdev ||
1813 wdev->iftype == NL80211_IFTYPE_AP ||
1814 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1815 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1816 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1817 }
1818
1819 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1820 struct genl_info *info,
1821 struct cfg80211_chan_def *chandef)
1822 {
1823 u32 control_freq;
1824
1825 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1826 return -EINVAL;
1827
1828 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1829
1830 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1831 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1832 chandef->center_freq1 = control_freq;
1833 chandef->center_freq2 = 0;
1834
1835 /* Primary channel not allowed */
1836 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1837 return -EINVAL;
1838
1839 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1840 enum nl80211_channel_type chantype;
1841
1842 chantype = nla_get_u32(
1843 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1844
1845 switch (chantype) {
1846 case NL80211_CHAN_NO_HT:
1847 case NL80211_CHAN_HT20:
1848 case NL80211_CHAN_HT40PLUS:
1849 case NL80211_CHAN_HT40MINUS:
1850 cfg80211_chandef_create(chandef, chandef->chan,
1851 chantype);
1852 break;
1853 default:
1854 return -EINVAL;
1855 }
1856 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1857 chandef->width =
1858 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1859 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1860 chandef->center_freq1 =
1861 nla_get_u32(
1862 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1863 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1864 chandef->center_freq2 =
1865 nla_get_u32(
1866 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1867 }
1868
1869 if (!cfg80211_chandef_valid(chandef))
1870 return -EINVAL;
1871
1872 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1873 IEEE80211_CHAN_DISABLED))
1874 return -EINVAL;
1875
1876 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1877 chandef->width == NL80211_CHAN_WIDTH_10) &&
1878 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1879 return -EINVAL;
1880
1881 return 0;
1882 }
1883
1884 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1885 struct wireless_dev *wdev,
1886 struct genl_info *info)
1887 {
1888 struct cfg80211_chan_def chandef;
1889 int result;
1890 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1891
1892 if (wdev)
1893 iftype = wdev->iftype;
1894
1895 if (!nl80211_can_set_dev_channel(wdev))
1896 return -EOPNOTSUPP;
1897
1898 result = nl80211_parse_chandef(rdev, info, &chandef);
1899 if (result)
1900 return result;
1901
1902 switch (iftype) {
1903 case NL80211_IFTYPE_AP:
1904 case NL80211_IFTYPE_P2P_GO:
1905 if (wdev->beacon_interval) {
1906 result = -EBUSY;
1907 break;
1908 }
1909 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1910 result = -EINVAL;
1911 break;
1912 }
1913 wdev->preset_chandef = chandef;
1914 result = 0;
1915 break;
1916 case NL80211_IFTYPE_MESH_POINT:
1917 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1918 break;
1919 case NL80211_IFTYPE_MONITOR:
1920 result = cfg80211_set_monitor_channel(rdev, &chandef);
1921 break;
1922 default:
1923 result = -EINVAL;
1924 }
1925
1926 return result;
1927 }
1928
1929 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1930 {
1931 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1932 struct net_device *netdev = info->user_ptr[1];
1933
1934 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1935 }
1936
1937 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1938 {
1939 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1940 struct net_device *dev = info->user_ptr[1];
1941 struct wireless_dev *wdev = dev->ieee80211_ptr;
1942 const u8 *bssid;
1943
1944 if (!info->attrs[NL80211_ATTR_MAC])
1945 return -EINVAL;
1946
1947 if (netif_running(dev))
1948 return -EBUSY;
1949
1950 if (!rdev->ops->set_wds_peer)
1951 return -EOPNOTSUPP;
1952
1953 if (wdev->iftype != NL80211_IFTYPE_WDS)
1954 return -EOPNOTSUPP;
1955
1956 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1957 return rdev_set_wds_peer(rdev, dev, bssid);
1958 }
1959
1960
1961 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1962 {
1963 struct cfg80211_registered_device *rdev;
1964 struct net_device *netdev = NULL;
1965 struct wireless_dev *wdev;
1966 int result = 0, rem_txq_params = 0;
1967 struct nlattr *nl_txq_params;
1968 u32 changed;
1969 u8 retry_short = 0, retry_long = 0;
1970 u32 frag_threshold = 0, rts_threshold = 0;
1971 u8 coverage_class = 0;
1972
1973 ASSERT_RTNL();
1974
1975 /*
1976 * Try to find the wiphy and netdev. Normally this
1977 * function shouldn't need the netdev, but this is
1978 * done for backward compatibility -- previously
1979 * setting the channel was done per wiphy, but now
1980 * it is per netdev. Previous userland like hostapd
1981 * also passed a netdev to set_wiphy, so that it is
1982 * possible to let that go to the right netdev!
1983 */
1984
1985 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1986 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1987
1988 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
1989 if (netdev && netdev->ieee80211_ptr)
1990 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1991 else
1992 netdev = NULL;
1993 }
1994
1995 if (!netdev) {
1996 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1997 info->attrs);
1998 if (IS_ERR(rdev))
1999 return PTR_ERR(rdev);
2000 wdev = NULL;
2001 netdev = NULL;
2002 result = 0;
2003 } else
2004 wdev = netdev->ieee80211_ptr;
2005
2006 /*
2007 * end workaround code, by now the rdev is available
2008 * and locked, and wdev may or may not be NULL.
2009 */
2010
2011 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2012 result = cfg80211_dev_rename(
2013 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2014
2015 if (result)
2016 return result;
2017
2018 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2019 struct ieee80211_txq_params txq_params;
2020 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2021
2022 if (!rdev->ops->set_txq_params)
2023 return -EOPNOTSUPP;
2024
2025 if (!netdev)
2026 return -EINVAL;
2027
2028 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2029 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2030 return -EINVAL;
2031
2032 if (!netif_running(netdev))
2033 return -ENETDOWN;
2034
2035 nla_for_each_nested(nl_txq_params,
2036 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2037 rem_txq_params) {
2038 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2039 nla_data(nl_txq_params),
2040 nla_len(nl_txq_params),
2041 txq_params_policy);
2042 result = parse_txq_params(tb, &txq_params);
2043 if (result)
2044 return result;
2045
2046 result = rdev_set_txq_params(rdev, netdev,
2047 &txq_params);
2048 if (result)
2049 return result;
2050 }
2051 }
2052
2053 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2054 result = __nl80211_set_channel(rdev,
2055 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2056 info);
2057 if (result)
2058 return result;
2059 }
2060
2061 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2062 struct wireless_dev *txp_wdev = wdev;
2063 enum nl80211_tx_power_setting type;
2064 int idx, mbm = 0;
2065
2066 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2067 txp_wdev = NULL;
2068
2069 if (!rdev->ops->set_tx_power)
2070 return -EOPNOTSUPP;
2071
2072 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2073 type = nla_get_u32(info->attrs[idx]);
2074
2075 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2076 (type != NL80211_TX_POWER_AUTOMATIC))
2077 return -EINVAL;
2078
2079 if (type != NL80211_TX_POWER_AUTOMATIC) {
2080 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2081 mbm = nla_get_u32(info->attrs[idx]);
2082 }
2083
2084 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2085 if (result)
2086 return result;
2087 }
2088
2089 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2090 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2091 u32 tx_ant, rx_ant;
2092 if ((!rdev->wiphy.available_antennas_tx &&
2093 !rdev->wiphy.available_antennas_rx) ||
2094 !rdev->ops->set_antenna)
2095 return -EOPNOTSUPP;
2096
2097 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2098 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2099
2100 /* reject antenna configurations which don't match the
2101 * available antenna masks, except for the "all" mask */
2102 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2103 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2104 return -EINVAL;
2105
2106 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2107 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2108
2109 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2110 if (result)
2111 return result;
2112 }
2113
2114 changed = 0;
2115
2116 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2117 retry_short = nla_get_u8(
2118 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2119 if (retry_short == 0)
2120 return -EINVAL;
2121
2122 changed |= WIPHY_PARAM_RETRY_SHORT;
2123 }
2124
2125 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2126 retry_long = nla_get_u8(
2127 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2128 if (retry_long == 0)
2129 return -EINVAL;
2130
2131 changed |= WIPHY_PARAM_RETRY_LONG;
2132 }
2133
2134 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2135 frag_threshold = nla_get_u32(
2136 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2137 if (frag_threshold < 256)
2138 return -EINVAL;
2139
2140 if (frag_threshold != (u32) -1) {
2141 /*
2142 * Fragments (apart from the last one) are required to
2143 * have even length. Make the fragmentation code
2144 * simpler by stripping LSB should someone try to use
2145 * odd threshold value.
2146 */
2147 frag_threshold &= ~0x1;
2148 }
2149 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2150 }
2151
2152 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2153 rts_threshold = nla_get_u32(
2154 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2155 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2156 }
2157
2158 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2159 coverage_class = nla_get_u8(
2160 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2161 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2162 }
2163
2164 if (changed) {
2165 u8 old_retry_short, old_retry_long;
2166 u32 old_frag_threshold, old_rts_threshold;
2167 u8 old_coverage_class;
2168
2169 if (!rdev->ops->set_wiphy_params)
2170 return -EOPNOTSUPP;
2171
2172 old_retry_short = rdev->wiphy.retry_short;
2173 old_retry_long = rdev->wiphy.retry_long;
2174 old_frag_threshold = rdev->wiphy.frag_threshold;
2175 old_rts_threshold = rdev->wiphy.rts_threshold;
2176 old_coverage_class = rdev->wiphy.coverage_class;
2177
2178 if (changed & WIPHY_PARAM_RETRY_SHORT)
2179 rdev->wiphy.retry_short = retry_short;
2180 if (changed & WIPHY_PARAM_RETRY_LONG)
2181 rdev->wiphy.retry_long = retry_long;
2182 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2183 rdev->wiphy.frag_threshold = frag_threshold;
2184 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2185 rdev->wiphy.rts_threshold = rts_threshold;
2186 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2187 rdev->wiphy.coverage_class = coverage_class;
2188
2189 result = rdev_set_wiphy_params(rdev, changed);
2190 if (result) {
2191 rdev->wiphy.retry_short = old_retry_short;
2192 rdev->wiphy.retry_long = old_retry_long;
2193 rdev->wiphy.frag_threshold = old_frag_threshold;
2194 rdev->wiphy.rts_threshold = old_rts_threshold;
2195 rdev->wiphy.coverage_class = old_coverage_class;
2196 }
2197 }
2198 return 0;
2199 }
2200
2201 static inline u64 wdev_id(struct wireless_dev *wdev)
2202 {
2203 return (u64)wdev->identifier |
2204 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2205 }
2206
2207 static int nl80211_send_chandef(struct sk_buff *msg,
2208 const struct cfg80211_chan_def *chandef)
2209 {
2210 WARN_ON(!cfg80211_chandef_valid(chandef));
2211
2212 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2213 chandef->chan->center_freq))
2214 return -ENOBUFS;
2215 switch (chandef->width) {
2216 case NL80211_CHAN_WIDTH_20_NOHT:
2217 case NL80211_CHAN_WIDTH_20:
2218 case NL80211_CHAN_WIDTH_40:
2219 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2220 cfg80211_get_chandef_type(chandef)))
2221 return -ENOBUFS;
2222 break;
2223 default:
2224 break;
2225 }
2226 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2227 return -ENOBUFS;
2228 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2229 return -ENOBUFS;
2230 if (chandef->center_freq2 &&
2231 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2232 return -ENOBUFS;
2233 return 0;
2234 }
2235
2236 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2237 struct cfg80211_registered_device *rdev,
2238 struct wireless_dev *wdev)
2239 {
2240 struct net_device *dev = wdev->netdev;
2241 void *hdr;
2242
2243 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2244 if (!hdr)
2245 return -1;
2246
2247 if (dev &&
2248 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2249 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2250 goto nla_put_failure;
2251
2252 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2253 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2254 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2255 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2256 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2257 rdev->devlist_generation ^
2258 (cfg80211_rdev_list_generation << 2)))
2259 goto nla_put_failure;
2260
2261 if (rdev->ops->get_channel) {
2262 int ret;
2263 struct cfg80211_chan_def chandef;
2264
2265 ret = rdev_get_channel(rdev, wdev, &chandef);
2266 if (ret == 0) {
2267 if (nl80211_send_chandef(msg, &chandef))
2268 goto nla_put_failure;
2269 }
2270 }
2271
2272 if (wdev->ssid_len) {
2273 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2274 goto nla_put_failure;
2275 }
2276
2277 return genlmsg_end(msg, hdr);
2278
2279 nla_put_failure:
2280 genlmsg_cancel(msg, hdr);
2281 return -EMSGSIZE;
2282 }
2283
2284 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2285 {
2286 int wp_idx = 0;
2287 int if_idx = 0;
2288 int wp_start = cb->args[0];
2289 int if_start = cb->args[1];
2290 struct cfg80211_registered_device *rdev;
2291 struct wireless_dev *wdev;
2292
2293 rtnl_lock();
2294 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2295 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2296 continue;
2297 if (wp_idx < wp_start) {
2298 wp_idx++;
2299 continue;
2300 }
2301 if_idx = 0;
2302
2303 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2304 if (if_idx < if_start) {
2305 if_idx++;
2306 continue;
2307 }
2308 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2309 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2310 rdev, wdev) < 0) {
2311 goto out;
2312 }
2313 if_idx++;
2314 }
2315
2316 wp_idx++;
2317 }
2318 out:
2319 rtnl_unlock();
2320
2321 cb->args[0] = wp_idx;
2322 cb->args[1] = if_idx;
2323
2324 return skb->len;
2325 }
2326
2327 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2328 {
2329 struct sk_buff *msg;
2330 struct cfg80211_registered_device *dev = info->user_ptr[0];
2331 struct wireless_dev *wdev = info->user_ptr[1];
2332
2333 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2334 if (!msg)
2335 return -ENOMEM;
2336
2337 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2338 dev, wdev) < 0) {
2339 nlmsg_free(msg);
2340 return -ENOBUFS;
2341 }
2342
2343 return genlmsg_reply(msg, info);
2344 }
2345
2346 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2347 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2348 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2349 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2350 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2351 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2352 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2353 };
2354
2355 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2356 {
2357 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2358 int flag;
2359
2360 *mntrflags = 0;
2361
2362 if (!nla)
2363 return -EINVAL;
2364
2365 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2366 nla, mntr_flags_policy))
2367 return -EINVAL;
2368
2369 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2370 if (flags[flag])
2371 *mntrflags |= (1<<flag);
2372
2373 return 0;
2374 }
2375
2376 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2377 struct net_device *netdev, u8 use_4addr,
2378 enum nl80211_iftype iftype)
2379 {
2380 if (!use_4addr) {
2381 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2382 return -EBUSY;
2383 return 0;
2384 }
2385
2386 switch (iftype) {
2387 case NL80211_IFTYPE_AP_VLAN:
2388 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2389 return 0;
2390 break;
2391 case NL80211_IFTYPE_STATION:
2392 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2393 return 0;
2394 break;
2395 default:
2396 break;
2397 }
2398
2399 return -EOPNOTSUPP;
2400 }
2401
2402 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2403 {
2404 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2405 struct vif_params params;
2406 int err;
2407 enum nl80211_iftype otype, ntype;
2408 struct net_device *dev = info->user_ptr[1];
2409 u32 _flags, *flags = NULL;
2410 bool change = false;
2411
2412 memset(&params, 0, sizeof(params));
2413
2414 otype = ntype = dev->ieee80211_ptr->iftype;
2415
2416 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2417 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2418 if (otype != ntype)
2419 change = true;
2420 if (ntype > NL80211_IFTYPE_MAX)
2421 return -EINVAL;
2422 }
2423
2424 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2425 struct wireless_dev *wdev = dev->ieee80211_ptr;
2426
2427 if (ntype != NL80211_IFTYPE_MESH_POINT)
2428 return -EINVAL;
2429 if (netif_running(dev))
2430 return -EBUSY;
2431
2432 wdev_lock(wdev);
2433 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2434 IEEE80211_MAX_MESH_ID_LEN);
2435 wdev->mesh_id_up_len =
2436 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2437 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2438 wdev->mesh_id_up_len);
2439 wdev_unlock(wdev);
2440 }
2441
2442 if (info->attrs[NL80211_ATTR_4ADDR]) {
2443 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2444 change = true;
2445 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2446 if (err)
2447 return err;
2448 } else {
2449 params.use_4addr = -1;
2450 }
2451
2452 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2453 if (ntype != NL80211_IFTYPE_MONITOR)
2454 return -EINVAL;
2455 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2456 &_flags);
2457 if (err)
2458 return err;
2459
2460 flags = &_flags;
2461 change = true;
2462 }
2463
2464 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2465 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2466 return -EOPNOTSUPP;
2467
2468 if (change)
2469 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2470 else
2471 err = 0;
2472
2473 if (!err && params.use_4addr != -1)
2474 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2475
2476 return err;
2477 }
2478
2479 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2480 {
2481 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2482 struct vif_params params;
2483 struct wireless_dev *wdev;
2484 struct sk_buff *msg;
2485 int err;
2486 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2487 u32 flags;
2488
2489 memset(&params, 0, sizeof(params));
2490
2491 if (!info->attrs[NL80211_ATTR_IFNAME])
2492 return -EINVAL;
2493
2494 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2495 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2496 if (type > NL80211_IFTYPE_MAX)
2497 return -EINVAL;
2498 }
2499
2500 if (!rdev->ops->add_virtual_intf ||
2501 !(rdev->wiphy.interface_modes & (1 << type)))
2502 return -EOPNOTSUPP;
2503
2504 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2505 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2506 ETH_ALEN);
2507 if (!is_valid_ether_addr(params.macaddr))
2508 return -EADDRNOTAVAIL;
2509 }
2510
2511 if (info->attrs[NL80211_ATTR_4ADDR]) {
2512 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2513 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2514 if (err)
2515 return err;
2516 }
2517
2518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2519 if (!msg)
2520 return -ENOMEM;
2521
2522 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2523 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2524 &flags);
2525
2526 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2527 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2528 return -EOPNOTSUPP;
2529
2530 wdev = rdev_add_virtual_intf(rdev,
2531 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2532 type, err ? NULL : &flags, &params);
2533 if (IS_ERR(wdev)) {
2534 nlmsg_free(msg);
2535 return PTR_ERR(wdev);
2536 }
2537
2538 switch (type) {
2539 case NL80211_IFTYPE_MESH_POINT:
2540 if (!info->attrs[NL80211_ATTR_MESH_ID])
2541 break;
2542 wdev_lock(wdev);
2543 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2544 IEEE80211_MAX_MESH_ID_LEN);
2545 wdev->mesh_id_up_len =
2546 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2547 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2548 wdev->mesh_id_up_len);
2549 wdev_unlock(wdev);
2550 break;
2551 case NL80211_IFTYPE_P2P_DEVICE:
2552 /*
2553 * P2P Device doesn't have a netdev, so doesn't go
2554 * through the netdev notifier and must be added here
2555 */
2556 mutex_init(&wdev->mtx);
2557 INIT_LIST_HEAD(&wdev->event_list);
2558 spin_lock_init(&wdev->event_lock);
2559 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2560 spin_lock_init(&wdev->mgmt_registrations_lock);
2561
2562 wdev->identifier = ++rdev->wdev_id;
2563 list_add_rcu(&wdev->list, &rdev->wdev_list);
2564 rdev->devlist_generation++;
2565 break;
2566 default:
2567 break;
2568 }
2569
2570 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2571 rdev, wdev) < 0) {
2572 nlmsg_free(msg);
2573 return -ENOBUFS;
2574 }
2575
2576 return genlmsg_reply(msg, info);
2577 }
2578
2579 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2580 {
2581 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2582 struct wireless_dev *wdev = info->user_ptr[1];
2583
2584 if (!rdev->ops->del_virtual_intf)
2585 return -EOPNOTSUPP;
2586
2587 /*
2588 * If we remove a wireless device without a netdev then clear
2589 * user_ptr[1] so that nl80211_post_doit won't dereference it
2590 * to check if it needs to do dev_put(). Otherwise it crashes
2591 * since the wdev has been freed, unlike with a netdev where
2592 * we need the dev_put() for the netdev to really be freed.
2593 */
2594 if (!wdev->netdev)
2595 info->user_ptr[1] = NULL;
2596
2597 return rdev_del_virtual_intf(rdev, wdev);
2598 }
2599
2600 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2601 {
2602 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2603 struct net_device *dev = info->user_ptr[1];
2604 u16 noack_map;
2605
2606 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2607 return -EINVAL;
2608
2609 if (!rdev->ops->set_noack_map)
2610 return -EOPNOTSUPP;
2611
2612 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2613
2614 return rdev_set_noack_map(rdev, dev, noack_map);
2615 }
2616
2617 struct get_key_cookie {
2618 struct sk_buff *msg;
2619 int error;
2620 int idx;
2621 };
2622
2623 static void get_key_callback(void *c, struct key_params *params)
2624 {
2625 struct nlattr *key;
2626 struct get_key_cookie *cookie = c;
2627
2628 if ((params->key &&
2629 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2630 params->key_len, params->key)) ||
2631 (params->seq &&
2632 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2633 params->seq_len, params->seq)) ||
2634 (params->cipher &&
2635 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2636 params->cipher)))
2637 goto nla_put_failure;
2638
2639 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2640 if (!key)
2641 goto nla_put_failure;
2642
2643 if ((params->key &&
2644 nla_put(cookie->msg, NL80211_KEY_DATA,
2645 params->key_len, params->key)) ||
2646 (params->seq &&
2647 nla_put(cookie->msg, NL80211_KEY_SEQ,
2648 params->seq_len, params->seq)) ||
2649 (params->cipher &&
2650 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2651 params->cipher)))
2652 goto nla_put_failure;
2653
2654 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2655 goto nla_put_failure;
2656
2657 nla_nest_end(cookie->msg, key);
2658
2659 return;
2660 nla_put_failure:
2661 cookie->error = 1;
2662 }
2663
2664 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2665 {
2666 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2667 int err;
2668 struct net_device *dev = info->user_ptr[1];
2669 u8 key_idx = 0;
2670 const u8 *mac_addr = NULL;
2671 bool pairwise;
2672 struct get_key_cookie cookie = {
2673 .error = 0,
2674 };
2675 void *hdr;
2676 struct sk_buff *msg;
2677
2678 if (info->attrs[NL80211_ATTR_KEY_IDX])
2679 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2680
2681 if (key_idx > 5)
2682 return -EINVAL;
2683
2684 if (info->attrs[NL80211_ATTR_MAC])
2685 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2686
2687 pairwise = !!mac_addr;
2688 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2689 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2690 if (kt >= NUM_NL80211_KEYTYPES)
2691 return -EINVAL;
2692 if (kt != NL80211_KEYTYPE_GROUP &&
2693 kt != NL80211_KEYTYPE_PAIRWISE)
2694 return -EINVAL;
2695 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2696 }
2697
2698 if (!rdev->ops->get_key)
2699 return -EOPNOTSUPP;
2700
2701 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2702 if (!msg)
2703 return -ENOMEM;
2704
2705 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2706 NL80211_CMD_NEW_KEY);
2707 if (!hdr)
2708 goto nla_put_failure;
2709
2710 cookie.msg = msg;
2711 cookie.idx = key_idx;
2712
2713 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2714 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2715 goto nla_put_failure;
2716 if (mac_addr &&
2717 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2718 goto nla_put_failure;
2719
2720 if (pairwise && mac_addr &&
2721 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2722 return -ENOENT;
2723
2724 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2725 get_key_callback);
2726
2727 if (err)
2728 goto free_msg;
2729
2730 if (cookie.error)
2731 goto nla_put_failure;
2732
2733 genlmsg_end(msg, hdr);
2734 return genlmsg_reply(msg, info);
2735
2736 nla_put_failure:
2737 err = -ENOBUFS;
2738 free_msg:
2739 nlmsg_free(msg);
2740 return err;
2741 }
2742
2743 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2744 {
2745 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2746 struct key_parse key;
2747 int err;
2748 struct net_device *dev = info->user_ptr[1];
2749
2750 err = nl80211_parse_key(info, &key);
2751 if (err)
2752 return err;
2753
2754 if (key.idx < 0)
2755 return -EINVAL;
2756
2757 /* only support setting default key */
2758 if (!key.def && !key.defmgmt)
2759 return -EINVAL;
2760
2761 wdev_lock(dev->ieee80211_ptr);
2762
2763 if (key.def) {
2764 if (!rdev->ops->set_default_key) {
2765 err = -EOPNOTSUPP;
2766 goto out;
2767 }
2768
2769 err = nl80211_key_allowed(dev->ieee80211_ptr);
2770 if (err)
2771 goto out;
2772
2773 err = rdev_set_default_key(rdev, dev, key.idx,
2774 key.def_uni, key.def_multi);
2775
2776 if (err)
2777 goto out;
2778
2779 #ifdef CONFIG_CFG80211_WEXT
2780 dev->ieee80211_ptr->wext.default_key = key.idx;
2781 #endif
2782 } else {
2783 if (key.def_uni || !key.def_multi) {
2784 err = -EINVAL;
2785 goto out;
2786 }
2787
2788 if (!rdev->ops->set_default_mgmt_key) {
2789 err = -EOPNOTSUPP;
2790 goto out;
2791 }
2792
2793 err = nl80211_key_allowed(dev->ieee80211_ptr);
2794 if (err)
2795 goto out;
2796
2797 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2798 if (err)
2799 goto out;
2800
2801 #ifdef CONFIG_CFG80211_WEXT
2802 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2803 #endif
2804 }
2805
2806 out:
2807 wdev_unlock(dev->ieee80211_ptr);
2808
2809 return err;
2810 }
2811
2812 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2813 {
2814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2815 int err;
2816 struct net_device *dev = info->user_ptr[1];
2817 struct key_parse key;
2818 const u8 *mac_addr = NULL;
2819
2820 err = nl80211_parse_key(info, &key);
2821 if (err)
2822 return err;
2823
2824 if (!key.p.key)
2825 return -EINVAL;
2826
2827 if (info->attrs[NL80211_ATTR_MAC])
2828 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2829
2830 if (key.type == -1) {
2831 if (mac_addr)
2832 key.type = NL80211_KEYTYPE_PAIRWISE;
2833 else
2834 key.type = NL80211_KEYTYPE_GROUP;
2835 }
2836
2837 /* for now */
2838 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2839 key.type != NL80211_KEYTYPE_GROUP)
2840 return -EINVAL;
2841
2842 if (!rdev->ops->add_key)
2843 return -EOPNOTSUPP;
2844
2845 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2846 key.type == NL80211_KEYTYPE_PAIRWISE,
2847 mac_addr))
2848 return -EINVAL;
2849
2850 wdev_lock(dev->ieee80211_ptr);
2851 err = nl80211_key_allowed(dev->ieee80211_ptr);
2852 if (!err)
2853 err = rdev_add_key(rdev, dev, key.idx,
2854 key.type == NL80211_KEYTYPE_PAIRWISE,
2855 mac_addr, &key.p);
2856 wdev_unlock(dev->ieee80211_ptr);
2857
2858 return err;
2859 }
2860
2861 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2862 {
2863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2864 int err;
2865 struct net_device *dev = info->user_ptr[1];
2866 u8 *mac_addr = NULL;
2867 struct key_parse key;
2868
2869 err = nl80211_parse_key(info, &key);
2870 if (err)
2871 return err;
2872
2873 if (info->attrs[NL80211_ATTR_MAC])
2874 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2875
2876 if (key.type == -1) {
2877 if (mac_addr)
2878 key.type = NL80211_KEYTYPE_PAIRWISE;
2879 else
2880 key.type = NL80211_KEYTYPE_GROUP;
2881 }
2882
2883 /* for now */
2884 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2885 key.type != NL80211_KEYTYPE_GROUP)
2886 return -EINVAL;
2887
2888 if (!rdev->ops->del_key)
2889 return -EOPNOTSUPP;
2890
2891 wdev_lock(dev->ieee80211_ptr);
2892 err = nl80211_key_allowed(dev->ieee80211_ptr);
2893
2894 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2895 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2896 err = -ENOENT;
2897
2898 if (!err)
2899 err = rdev_del_key(rdev, dev, key.idx,
2900 key.type == NL80211_KEYTYPE_PAIRWISE,
2901 mac_addr);
2902
2903 #ifdef CONFIG_CFG80211_WEXT
2904 if (!err) {
2905 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2906 dev->ieee80211_ptr->wext.default_key = -1;
2907 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2908 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2909 }
2910 #endif
2911 wdev_unlock(dev->ieee80211_ptr);
2912
2913 return err;
2914 }
2915
2916 /* This function returns an error or the number of nested attributes */
2917 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2918 {
2919 struct nlattr *attr;
2920 int n_entries = 0, tmp;
2921
2922 nla_for_each_nested(attr, nl_attr, tmp) {
2923 if (nla_len(attr) != ETH_ALEN)
2924 return -EINVAL;
2925
2926 n_entries++;
2927 }
2928
2929 return n_entries;
2930 }
2931
2932 /*
2933 * This function parses ACL information and allocates memory for ACL data.
2934 * On successful return, the calling function is responsible to free the
2935 * ACL buffer returned by this function.
2936 */
2937 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2938 struct genl_info *info)
2939 {
2940 enum nl80211_acl_policy acl_policy;
2941 struct nlattr *attr;
2942 struct cfg80211_acl_data *acl;
2943 int i = 0, n_entries, tmp;
2944
2945 if (!wiphy->max_acl_mac_addrs)
2946 return ERR_PTR(-EOPNOTSUPP);
2947
2948 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2949 return ERR_PTR(-EINVAL);
2950
2951 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2952 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2953 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2954 return ERR_PTR(-EINVAL);
2955
2956 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2957 return ERR_PTR(-EINVAL);
2958
2959 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2960 if (n_entries < 0)
2961 return ERR_PTR(n_entries);
2962
2963 if (n_entries > wiphy->max_acl_mac_addrs)
2964 return ERR_PTR(-ENOTSUPP);
2965
2966 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2967 GFP_KERNEL);
2968 if (!acl)
2969 return ERR_PTR(-ENOMEM);
2970
2971 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2972 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2973 i++;
2974 }
2975
2976 acl->n_acl_entries = n_entries;
2977 acl->acl_policy = acl_policy;
2978
2979 return acl;
2980 }
2981
2982 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2983 {
2984 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2985 struct net_device *dev = info->user_ptr[1];
2986 struct cfg80211_acl_data *acl;
2987 int err;
2988
2989 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2990 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2991 return -EOPNOTSUPP;
2992
2993 if (!dev->ieee80211_ptr->beacon_interval)
2994 return -EINVAL;
2995
2996 acl = parse_acl_data(&rdev->wiphy, info);
2997 if (IS_ERR(acl))
2998 return PTR_ERR(acl);
2999
3000 err = rdev_set_mac_acl(rdev, dev, acl);
3001
3002 kfree(acl);
3003
3004 return err;
3005 }
3006
3007 static int nl80211_parse_beacon(struct nlattr *attrs[],
3008 struct cfg80211_beacon_data *bcn)
3009 {
3010 bool haveinfo = false;
3011
3012 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3013 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3014 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3015 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3016 return -EINVAL;
3017
3018 memset(bcn, 0, sizeof(*bcn));
3019
3020 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3021 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3022 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3023 if (!bcn->head_len)
3024 return -EINVAL;
3025 haveinfo = true;
3026 }
3027
3028 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3029 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3030 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3031 haveinfo = true;
3032 }
3033
3034 if (!haveinfo)
3035 return -EINVAL;
3036
3037 if (attrs[NL80211_ATTR_IE]) {
3038 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3039 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3040 }
3041
3042 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3043 bcn->proberesp_ies =
3044 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3045 bcn->proberesp_ies_len =
3046 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3047 }
3048
3049 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3050 bcn->assocresp_ies =
3051 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3052 bcn->assocresp_ies_len =
3053 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3054 }
3055
3056 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3057 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3058 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3059 }
3060
3061 return 0;
3062 }
3063
3064 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3065 struct cfg80211_ap_settings *params)
3066 {
3067 struct wireless_dev *wdev;
3068 bool ret = false;
3069
3070 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3071 if (wdev->iftype != NL80211_IFTYPE_AP &&
3072 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3073 continue;
3074
3075 if (!wdev->preset_chandef.chan)
3076 continue;
3077
3078 params->chandef = wdev->preset_chandef;
3079 ret = true;
3080 break;
3081 }
3082
3083 return ret;
3084 }
3085
3086 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3087 enum nl80211_auth_type auth_type,
3088 enum nl80211_commands cmd)
3089 {
3090 if (auth_type > NL80211_AUTHTYPE_MAX)
3091 return false;
3092
3093 switch (cmd) {
3094 case NL80211_CMD_AUTHENTICATE:
3095 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3096 auth_type == NL80211_AUTHTYPE_SAE)
3097 return false;
3098 return true;
3099 case NL80211_CMD_CONNECT:
3100 case NL80211_CMD_START_AP:
3101 /* SAE not supported yet */
3102 if (auth_type == NL80211_AUTHTYPE_SAE)
3103 return false;
3104 return true;
3105 default:
3106 return false;
3107 }
3108 }
3109
3110 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3111 {
3112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3113 struct net_device *dev = info->user_ptr[1];
3114 struct wireless_dev *wdev = dev->ieee80211_ptr;
3115 struct cfg80211_ap_settings params;
3116 int err;
3117 u8 radar_detect_width = 0;
3118
3119 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3120 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3121 return -EOPNOTSUPP;
3122
3123 if (!rdev->ops->start_ap)
3124 return -EOPNOTSUPP;
3125
3126 if (wdev->beacon_interval)
3127 return -EALREADY;
3128
3129 memset(&params, 0, sizeof(params));
3130
3131 /* these are required for START_AP */
3132 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3133 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3134 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3135 return -EINVAL;
3136
3137 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3138 if (err)
3139 return err;
3140
3141 params.beacon_interval =
3142 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3143 params.dtim_period =
3144 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3145
3146 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3147 if (err)
3148 return err;
3149
3150 /*
3151 * In theory, some of these attributes should be required here
3152 * but since they were not used when the command was originally
3153 * added, keep them optional for old user space programs to let
3154 * them continue to work with drivers that do not need the
3155 * additional information -- drivers must check!
3156 */
3157 if (info->attrs[NL80211_ATTR_SSID]) {
3158 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3159 params.ssid_len =
3160 nla_len(info->attrs[NL80211_ATTR_SSID]);
3161 if (params.ssid_len == 0 ||
3162 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3163 return -EINVAL;
3164 }
3165
3166 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3167 params.hidden_ssid = nla_get_u32(
3168 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3169 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3170 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3171 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3172 return -EINVAL;
3173 }
3174
3175 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3176
3177 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3178 params.auth_type = nla_get_u32(
3179 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3180 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3181 NL80211_CMD_START_AP))
3182 return -EINVAL;
3183 } else
3184 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3185
3186 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3187 NL80211_MAX_NR_CIPHER_SUITES);
3188 if (err)
3189 return err;
3190
3191 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3192 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3193 return -EOPNOTSUPP;
3194 params.inactivity_timeout = nla_get_u16(
3195 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3196 }
3197
3198 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3199 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3200 return -EINVAL;
3201 params.p2p_ctwindow =
3202 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3203 if (params.p2p_ctwindow > 127)
3204 return -EINVAL;
3205 if (params.p2p_ctwindow != 0 &&
3206 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3207 return -EINVAL;
3208 }
3209
3210 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3211 u8 tmp;
3212
3213 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3214 return -EINVAL;
3215 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3216 if (tmp > 1)
3217 return -EINVAL;
3218 params.p2p_opp_ps = tmp;
3219 if (params.p2p_opp_ps != 0 &&
3220 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3221 return -EINVAL;
3222 }
3223
3224 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3225 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3226 if (err)
3227 return err;
3228 } else if (wdev->preset_chandef.chan) {
3229 params.chandef = wdev->preset_chandef;
3230 } else if (!nl80211_get_ap_channel(rdev, &params))
3231 return -EINVAL;
3232
3233 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3234 return -EINVAL;
3235
3236 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3237 if (err < 0)
3238 return err;
3239 if (err) {
3240 radar_detect_width = BIT(params.chandef.width);
3241 params.radar_required = true;
3242 }
3243
3244 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3245 params.chandef.chan,
3246 CHAN_MODE_SHARED,
3247 radar_detect_width);
3248 if (err)
3249 return err;
3250
3251 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3252 params.acl = parse_acl_data(&rdev->wiphy, info);
3253 if (IS_ERR(params.acl))
3254 return PTR_ERR(params.acl);
3255 }
3256
3257 wdev_lock(wdev);
3258 err = rdev_start_ap(rdev, dev, &params);
3259 if (!err) {
3260 wdev->preset_chandef = params.chandef;
3261 wdev->beacon_interval = params.beacon_interval;
3262 wdev->channel = params.chandef.chan;
3263 wdev->ssid_len = params.ssid_len;
3264 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3265 }
3266 wdev_unlock(wdev);
3267
3268 kfree(params.acl);
3269
3270 return err;
3271 }
3272
3273 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3274 {
3275 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3276 struct net_device *dev = info->user_ptr[1];
3277 struct wireless_dev *wdev = dev->ieee80211_ptr;
3278 struct cfg80211_beacon_data params;
3279 int err;
3280
3281 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3282 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3283 return -EOPNOTSUPP;
3284
3285 if (!rdev->ops->change_beacon)
3286 return -EOPNOTSUPP;
3287
3288 if (!wdev->beacon_interval)
3289 return -EINVAL;
3290
3291 err = nl80211_parse_beacon(info->attrs, &params);
3292 if (err)
3293 return err;
3294
3295 wdev_lock(wdev);
3296 err = rdev_change_beacon(rdev, dev, &params);
3297 wdev_unlock(wdev);
3298
3299 return err;
3300 }
3301
3302 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3303 {
3304 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3305 struct net_device *dev = info->user_ptr[1];
3306
3307 return cfg80211_stop_ap(rdev, dev);
3308 }
3309
3310 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3311 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3312 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3313 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3314 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3315 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3316 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3317 };
3318
3319 static int parse_station_flags(struct genl_info *info,
3320 enum nl80211_iftype iftype,
3321 struct station_parameters *params)
3322 {
3323 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3324 struct nlattr *nla;
3325 int flag;
3326
3327 /*
3328 * Try parsing the new attribute first so userspace
3329 * can specify both for older kernels.
3330 */
3331 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3332 if (nla) {
3333 struct nl80211_sta_flag_update *sta_flags;
3334
3335 sta_flags = nla_data(nla);
3336 params->sta_flags_mask = sta_flags->mask;
3337 params->sta_flags_set = sta_flags->set;
3338 params->sta_flags_set &= params->sta_flags_mask;
3339 if ((params->sta_flags_mask |
3340 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3341 return -EINVAL;
3342 return 0;
3343 }
3344
3345 /* if present, parse the old attribute */
3346
3347 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3348 if (!nla)
3349 return 0;
3350
3351 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3352 nla, sta_flags_policy))
3353 return -EINVAL;
3354
3355 /*
3356 * Only allow certain flags for interface types so that
3357 * other attributes are silently ignored. Remember that
3358 * this is backward compatibility code with old userspace
3359 * and shouldn't be hit in other cases anyway.
3360 */
3361 switch (iftype) {
3362 case NL80211_IFTYPE_AP:
3363 case NL80211_IFTYPE_AP_VLAN:
3364 case NL80211_IFTYPE_P2P_GO:
3365 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3366 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3367 BIT(NL80211_STA_FLAG_WME) |
3368 BIT(NL80211_STA_FLAG_MFP);
3369 break;
3370 case NL80211_IFTYPE_P2P_CLIENT:
3371 case NL80211_IFTYPE_STATION:
3372 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3373 BIT(NL80211_STA_FLAG_TDLS_PEER);
3374 break;
3375 case NL80211_IFTYPE_MESH_POINT:
3376 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3377 BIT(NL80211_STA_FLAG_MFP) |
3378 BIT(NL80211_STA_FLAG_AUTHORIZED);
3379 default:
3380 return -EINVAL;
3381 }
3382
3383 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3384 if (flags[flag]) {
3385 params->sta_flags_set |= (1<<flag);
3386
3387 /* no longer support new API additions in old API */
3388 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3389 return -EINVAL;
3390 }
3391 }
3392
3393 return 0;
3394 }
3395
3396 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3397 int attr)
3398 {
3399 struct nlattr *rate;
3400 u32 bitrate;
3401 u16 bitrate_compat;
3402
3403 rate = nla_nest_start(msg, attr);
3404 if (!rate)
3405 return false;
3406
3407 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3408 bitrate = cfg80211_calculate_bitrate(info);
3409 /* report 16-bit bitrate only if we can */
3410 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3411 if (bitrate > 0 &&
3412 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3413 return false;
3414 if (bitrate_compat > 0 &&
3415 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3416 return false;
3417
3418 if (info->flags & RATE_INFO_FLAGS_MCS) {
3419 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3420 return false;
3421 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3422 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3423 return false;
3424 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3425 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3426 return false;
3427 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3428 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3429 return false;
3430 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3431 return false;
3432 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3433 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3434 return false;
3435 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3436 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3437 return false;
3438 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3439 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3440 return false;
3441 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3442 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3443 return false;
3444 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3445 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3446 return false;
3447 }
3448
3449 nla_nest_end(msg, rate);
3450 return true;
3451 }
3452
3453 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3454 int id)
3455 {
3456 void *attr;
3457 int i = 0;
3458
3459 if (!mask)
3460 return true;
3461
3462 attr = nla_nest_start(msg, id);
3463 if (!attr)
3464 return false;
3465
3466 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3467 if (!(mask & BIT(i)))
3468 continue;
3469
3470 if (nla_put_u8(msg, i, signal[i]))
3471 return false;
3472 }
3473
3474 nla_nest_end(msg, attr);
3475
3476 return true;
3477 }
3478
3479 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3480 int flags,
3481 struct cfg80211_registered_device *rdev,
3482 struct net_device *dev,
3483 const u8 *mac_addr, struct station_info *sinfo)
3484 {
3485 void *hdr;
3486 struct nlattr *sinfoattr, *bss_param;
3487
3488 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3489 if (!hdr)
3490 return -1;
3491
3492 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3493 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3494 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3495 goto nla_put_failure;
3496
3497 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3498 if (!sinfoattr)
3499 goto nla_put_failure;
3500 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3501 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3502 sinfo->connected_time))
3503 goto nla_put_failure;
3504 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3505 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3506 sinfo->inactive_time))
3507 goto nla_put_failure;
3508 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3509 STATION_INFO_RX_BYTES64)) &&
3510 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3511 (u32)sinfo->rx_bytes))
3512 goto nla_put_failure;
3513 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3514 STATION_INFO_TX_BYTES64)) &&
3515 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3516 (u32)sinfo->tx_bytes))
3517 goto nla_put_failure;
3518 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3519 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3520 sinfo->rx_bytes))
3521 goto nla_put_failure;
3522 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3523 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3524 sinfo->tx_bytes))
3525 goto nla_put_failure;
3526 if ((sinfo->filled & STATION_INFO_LLID) &&
3527 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3528 goto nla_put_failure;
3529 if ((sinfo->filled & STATION_INFO_PLID) &&
3530 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3531 goto nla_put_failure;
3532 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3533 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3534 sinfo->plink_state))
3535 goto nla_put_failure;
3536 switch (rdev->wiphy.signal_type) {
3537 case CFG80211_SIGNAL_TYPE_MBM:
3538 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3539 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3540 sinfo->signal))
3541 goto nla_put_failure;
3542 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3543 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3544 sinfo->signal_avg))
3545 goto nla_put_failure;
3546 break;
3547 default:
3548 break;
3549 }
3550 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3551 if (!nl80211_put_signal(msg, sinfo->chains,
3552 sinfo->chain_signal,
3553 NL80211_STA_INFO_CHAIN_SIGNAL))
3554 goto nla_put_failure;
3555 }
3556 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3557 if (!nl80211_put_signal(msg, sinfo->chains,
3558 sinfo->chain_signal_avg,
3559 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3560 goto nla_put_failure;
3561 }
3562 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3563 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3564 NL80211_STA_INFO_TX_BITRATE))
3565 goto nla_put_failure;
3566 }
3567 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3568 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3569 NL80211_STA_INFO_RX_BITRATE))
3570 goto nla_put_failure;
3571 }
3572 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3573 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3574 sinfo->rx_packets))
3575 goto nla_put_failure;
3576 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3577 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3578 sinfo->tx_packets))
3579 goto nla_put_failure;
3580 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3581 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3582 sinfo->tx_retries))
3583 goto nla_put_failure;
3584 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3585 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3586 sinfo->tx_failed))
3587 goto nla_put_failure;
3588 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3589 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3590 sinfo->beacon_loss_count))
3591 goto nla_put_failure;
3592 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3593 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3594 sinfo->local_pm))
3595 goto nla_put_failure;
3596 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3597 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3598 sinfo->peer_pm))
3599 goto nla_put_failure;
3600 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3601 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3602 sinfo->nonpeer_pm))
3603 goto nla_put_failure;
3604 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3605 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3606 if (!bss_param)
3607 goto nla_put_failure;
3608
3609 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3610 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3611 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3612 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3613 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3614 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3615 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3616 sinfo->bss_param.dtim_period) ||
3617 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3618 sinfo->bss_param.beacon_interval))
3619 goto nla_put_failure;
3620
3621 nla_nest_end(msg, bss_param);
3622 }
3623 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3624 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3625 sizeof(struct nl80211_sta_flag_update),
3626 &sinfo->sta_flags))
3627 goto nla_put_failure;
3628 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3629 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3630 sinfo->t_offset))
3631 goto nla_put_failure;
3632 nla_nest_end(msg, sinfoattr);
3633
3634 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3635 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3636 sinfo->assoc_req_ies))
3637 goto nla_put_failure;
3638
3639 return genlmsg_end(msg, hdr);
3640
3641 nla_put_failure:
3642 genlmsg_cancel(msg, hdr);
3643 return -EMSGSIZE;
3644 }
3645
3646 static int nl80211_dump_station(struct sk_buff *skb,
3647 struct netlink_callback *cb)
3648 {
3649 struct station_info sinfo;
3650 struct cfg80211_registered_device *dev;
3651 struct wireless_dev *wdev;
3652 u8 mac_addr[ETH_ALEN];
3653 int sta_idx = cb->args[2];
3654 int err;
3655
3656 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3657 if (err)
3658 return err;
3659
3660 if (!wdev->netdev) {
3661 err = -EINVAL;
3662 goto out_err;
3663 }
3664
3665 if (!dev->ops->dump_station) {
3666 err = -EOPNOTSUPP;
3667 goto out_err;
3668 }
3669
3670 while (1) {
3671 memset(&sinfo, 0, sizeof(sinfo));
3672 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3673 mac_addr, &sinfo);
3674 if (err == -ENOENT)
3675 break;
3676 if (err)
3677 goto out_err;
3678
3679 if (nl80211_send_station(skb,
3680 NETLINK_CB(cb->skb).portid,
3681 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3682 dev, wdev->netdev, mac_addr,
3683 &sinfo) < 0)
3684 goto out;
3685
3686 sta_idx++;
3687 }
3688
3689
3690 out:
3691 cb->args[2] = sta_idx;
3692 err = skb->len;
3693 out_err:
3694 nl80211_finish_wdev_dump(dev);
3695
3696 return err;
3697 }
3698
3699 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3700 {
3701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3702 struct net_device *dev = info->user_ptr[1];
3703 struct station_info sinfo;
3704 struct sk_buff *msg;
3705 u8 *mac_addr = NULL;
3706 int err;
3707
3708 memset(&sinfo, 0, sizeof(sinfo));
3709
3710 if (!info->attrs[NL80211_ATTR_MAC])
3711 return -EINVAL;
3712
3713 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3714
3715 if (!rdev->ops->get_station)
3716 return -EOPNOTSUPP;
3717
3718 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3719 if (err)
3720 return err;
3721
3722 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3723 if (!msg)
3724 return -ENOMEM;
3725
3726 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3727 rdev, dev, mac_addr, &sinfo) < 0) {
3728 nlmsg_free(msg);
3729 return -ENOBUFS;
3730 }
3731
3732 return genlmsg_reply(msg, info);
3733 }
3734
3735 int cfg80211_check_station_change(struct wiphy *wiphy,
3736 struct station_parameters *params,
3737 enum cfg80211_station_type statype)
3738 {
3739 if (params->listen_interval != -1)
3740 return -EINVAL;
3741 if (params->aid)
3742 return -EINVAL;
3743
3744 /* When you run into this, adjust the code below for the new flag */
3745 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3746
3747 switch (statype) {
3748 case CFG80211_STA_MESH_PEER_KERNEL:
3749 case CFG80211_STA_MESH_PEER_USER:
3750 /*
3751 * No ignoring the TDLS flag here -- the userspace mesh
3752 * code doesn't have the bug of including TDLS in the
3753 * mask everywhere.
3754 */
3755 if (params->sta_flags_mask &
3756 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3757 BIT(NL80211_STA_FLAG_MFP) |
3758 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3759 return -EINVAL;
3760 break;
3761 case CFG80211_STA_TDLS_PEER_SETUP:
3762 case CFG80211_STA_TDLS_PEER_ACTIVE:
3763 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3764 return -EINVAL;
3765 /* ignore since it can't change */
3766 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3767 break;
3768 default:
3769 /* disallow mesh-specific things */
3770 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3771 return -EINVAL;
3772 if (params->local_pm)
3773 return -EINVAL;
3774 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3775 return -EINVAL;
3776 }
3777
3778 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3779 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3780 /* TDLS can't be set, ... */
3781 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3782 return -EINVAL;
3783 /*
3784 * ... but don't bother the driver with it. This works around
3785 * a hostapd/wpa_supplicant issue -- it always includes the
3786 * TLDS_PEER flag in the mask even for AP mode.
3787 */
3788 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3789 }
3790
3791 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3792 /* reject other things that can't change */
3793 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3794 return -EINVAL;
3795 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3796 return -EINVAL;
3797 if (params->supported_rates)
3798 return -EINVAL;
3799 if (params->ext_capab || params->ht_capa || params->vht_capa)
3800 return -EINVAL;
3801 }
3802
3803 if (statype != CFG80211_STA_AP_CLIENT) {
3804 if (params->vlan)
3805 return -EINVAL;
3806 }
3807
3808 switch (statype) {
3809 case CFG80211_STA_AP_MLME_CLIENT:
3810 /* Use this only for authorizing/unauthorizing a station */
3811 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3812 return -EOPNOTSUPP;
3813 break;
3814 case CFG80211_STA_AP_CLIENT:
3815 /* accept only the listed bits */
3816 if (params->sta_flags_mask &
3817 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3818 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3819 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3820 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3821 BIT(NL80211_STA_FLAG_WME) |
3822 BIT(NL80211_STA_FLAG_MFP)))
3823 return -EINVAL;
3824
3825 /* but authenticated/associated only if driver handles it */
3826 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3827 params->sta_flags_mask &
3828 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3829 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3830 return -EINVAL;
3831 break;
3832 case CFG80211_STA_IBSS:
3833 case CFG80211_STA_AP_STA:
3834 /* reject any changes other than AUTHORIZED */
3835 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3836 return -EINVAL;
3837 break;
3838 case CFG80211_STA_TDLS_PEER_SETUP:
3839 /* reject any changes other than AUTHORIZED or WME */
3840 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3841 BIT(NL80211_STA_FLAG_WME)))
3842 return -EINVAL;
3843 /* force (at least) rates when authorizing */
3844 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3845 !params->supported_rates)
3846 return -EINVAL;
3847 break;
3848 case CFG80211_STA_TDLS_PEER_ACTIVE:
3849 /* reject any changes */
3850 return -EINVAL;
3851 case CFG80211_STA_MESH_PEER_KERNEL:
3852 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3853 return -EINVAL;
3854 break;
3855 case CFG80211_STA_MESH_PEER_USER:
3856 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3857 return -EINVAL;
3858 break;
3859 }
3860
3861 return 0;
3862 }
3863 EXPORT_SYMBOL(cfg80211_check_station_change);
3864
3865 /*
3866 * Get vlan interface making sure it is running and on the right wiphy.
3867 */
3868 static struct net_device *get_vlan(struct genl_info *info,
3869 struct cfg80211_registered_device *rdev)
3870 {
3871 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3872 struct net_device *v;
3873 int ret;
3874
3875 if (!vlanattr)
3876 return NULL;
3877
3878 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3879 if (!v)
3880 return ERR_PTR(-ENODEV);
3881
3882 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3883 ret = -EINVAL;
3884 goto error;
3885 }
3886
3887 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3888 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3889 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3890 ret = -EINVAL;
3891 goto error;
3892 }
3893
3894 if (!netif_running(v)) {
3895 ret = -ENETDOWN;
3896 goto error;
3897 }
3898
3899 return v;
3900 error:
3901 dev_put(v);
3902 return ERR_PTR(ret);
3903 }
3904
3905 static struct nla_policy
3906 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3907 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3908 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3909 };
3910
3911 static int nl80211_parse_sta_wme(struct genl_info *info,
3912 struct station_parameters *params)
3913 {
3914 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3915 struct nlattr *nla;
3916 int err;
3917
3918 /* parse WME attributes if present */
3919 if (!info->attrs[NL80211_ATTR_STA_WME])
3920 return 0;
3921
3922 nla = info->attrs[NL80211_ATTR_STA_WME];
3923 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3924 nl80211_sta_wme_policy);
3925 if (err)
3926 return err;
3927
3928 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3929 params->uapsd_queues = nla_get_u8(
3930 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3931 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3932 return -EINVAL;
3933
3934 if (tb[NL80211_STA_WME_MAX_SP])
3935 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3936
3937 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3938 return -EINVAL;
3939
3940 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3941
3942 return 0;
3943 }
3944
3945 static int nl80211_parse_sta_channel_info(struct genl_info *info,
3946 struct station_parameters *params)
3947 {
3948 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
3949 params->supported_channels =
3950 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3951 params->supported_channels_len =
3952 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3953 /*
3954 * Need to include at least one (first channel, number of
3955 * channels) tuple for each subband, and must have proper
3956 * tuples for the rest of the data as well.
3957 */
3958 if (params->supported_channels_len < 2)
3959 return -EINVAL;
3960 if (params->supported_channels_len % 2)
3961 return -EINVAL;
3962 }
3963
3964 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
3965 params->supported_oper_classes =
3966 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3967 params->supported_oper_classes_len =
3968 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3969 /*
3970 * The value of the Length field of the Supported Operating
3971 * Classes element is between 2 and 253.
3972 */
3973 if (params->supported_oper_classes_len < 2 ||
3974 params->supported_oper_classes_len > 253)
3975 return -EINVAL;
3976 }
3977 return 0;
3978 }
3979
3980 static int nl80211_set_station_tdls(struct genl_info *info,
3981 struct station_parameters *params)
3982 {
3983 int err;
3984 /* Dummy STA entry gets updated once the peer capabilities are known */
3985 if (info->attrs[NL80211_ATTR_PEER_AID])
3986 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3987 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3988 params->ht_capa =
3989 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3990 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3991 params->vht_capa =
3992 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3993
3994 err = nl80211_parse_sta_channel_info(info, params);
3995 if (err)
3996 return err;
3997
3998 return nl80211_parse_sta_wme(info, params);
3999 }
4000
4001 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4002 {
4003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4004 struct net_device *dev = info->user_ptr[1];
4005 struct station_parameters params;
4006 u8 *mac_addr;
4007 int err;
4008
4009 memset(&params, 0, sizeof(params));
4010
4011 params.listen_interval = -1;
4012
4013 if (!rdev->ops->change_station)
4014 return -EOPNOTSUPP;
4015
4016 if (info->attrs[NL80211_ATTR_STA_AID])
4017 return -EINVAL;
4018
4019 if (!info->attrs[NL80211_ATTR_MAC])
4020 return -EINVAL;
4021
4022 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4023
4024 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4025 params.supported_rates =
4026 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4027 params.supported_rates_len =
4028 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4029 }
4030
4031 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4032 params.capability =
4033 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4034 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4035 }
4036
4037 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4038 params.ext_capab =
4039 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4040 params.ext_capab_len =
4041 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4042 }
4043
4044 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4045 return -EINVAL;
4046
4047 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4048 return -EINVAL;
4049
4050 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4051 params.plink_action =
4052 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4053 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4054 return -EINVAL;
4055 }
4056
4057 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4058 params.plink_state =
4059 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4060 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4061 return -EINVAL;
4062 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4063 }
4064
4065 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4066 enum nl80211_mesh_power_mode pm = nla_get_u32(
4067 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4068
4069 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4070 pm > NL80211_MESH_POWER_MAX)
4071 return -EINVAL;
4072
4073 params.local_pm = pm;
4074 }
4075
4076 /* Include parameters for TDLS peer (will check later) */
4077 err = nl80211_set_station_tdls(info, &params);
4078 if (err)
4079 return err;
4080
4081 params.vlan = get_vlan(info, rdev);
4082 if (IS_ERR(params.vlan))
4083 return PTR_ERR(params.vlan);
4084
4085 switch (dev->ieee80211_ptr->iftype) {
4086 case NL80211_IFTYPE_AP:
4087 case NL80211_IFTYPE_AP_VLAN:
4088 case NL80211_IFTYPE_P2P_GO:
4089 case NL80211_IFTYPE_P2P_CLIENT:
4090 case NL80211_IFTYPE_STATION:
4091 case NL80211_IFTYPE_ADHOC:
4092 case NL80211_IFTYPE_MESH_POINT:
4093 break;
4094 default:
4095 err = -EOPNOTSUPP;
4096 goto out_put_vlan;
4097 }
4098
4099 /* driver will call cfg80211_check_station_change() */
4100 err = rdev_change_station(rdev, dev, mac_addr, &params);
4101
4102 out_put_vlan:
4103 if (params.vlan)
4104 dev_put(params.vlan);
4105
4106 return err;
4107 }
4108
4109 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4110 {
4111 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4112 int err;
4113 struct net_device *dev = info->user_ptr[1];
4114 struct station_parameters params;
4115 u8 *mac_addr = NULL;
4116
4117 memset(&params, 0, sizeof(params));
4118
4119 if (!rdev->ops->add_station)
4120 return -EOPNOTSUPP;
4121
4122 if (!info->attrs[NL80211_ATTR_MAC])
4123 return -EINVAL;
4124
4125 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4126 return -EINVAL;
4127
4128 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4129 return -EINVAL;
4130
4131 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4132 !info->attrs[NL80211_ATTR_PEER_AID])
4133 return -EINVAL;
4134
4135 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4136 params.supported_rates =
4137 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4138 params.supported_rates_len =
4139 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4140 params.listen_interval =
4141 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4142
4143 if (info->attrs[NL80211_ATTR_PEER_AID])
4144 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4145 else
4146 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4147 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4148 return -EINVAL;
4149
4150 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4151 params.capability =
4152 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4153 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4154 }
4155
4156 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4157 params.ext_capab =
4158 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4159 params.ext_capab_len =
4160 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4161 }
4162
4163 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4164 params.ht_capa =
4165 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4166
4167 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4168 params.vht_capa =
4169 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4170
4171 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4172 params.opmode_notif_used = true;
4173 params.opmode_notif =
4174 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4175 }
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 err = nl80211_parse_sta_channel_info(info, &params);
4185 if (err)
4186 return err;
4187
4188 err = nl80211_parse_sta_wme(info, &params);
4189 if (err)
4190 return err;
4191
4192 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4193 return -EINVAL;
4194
4195 /* When you run into this, adjust the code below for the new flag */
4196 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4197
4198 switch (dev->ieee80211_ptr->iftype) {
4199 case NL80211_IFTYPE_AP:
4200 case NL80211_IFTYPE_AP_VLAN:
4201 case NL80211_IFTYPE_P2P_GO:
4202 /* ignore WME attributes if iface/sta is not capable */
4203 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4204 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4205 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4206
4207 /* TDLS peers cannot be added */
4208 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4209 info->attrs[NL80211_ATTR_PEER_AID])
4210 return -EINVAL;
4211 /* but don't bother the driver with it */
4212 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4213
4214 /* allow authenticated/associated only if driver handles it */
4215 if (!(rdev->wiphy.features &
4216 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4217 params.sta_flags_mask &
4218 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4219 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4220 return -EINVAL;
4221
4222 /* must be last in here for error handling */
4223 params.vlan = get_vlan(info, rdev);
4224 if (IS_ERR(params.vlan))
4225 return PTR_ERR(params.vlan);
4226 break;
4227 case NL80211_IFTYPE_MESH_POINT:
4228 /* ignore uAPSD data */
4229 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4230
4231 /* associated is disallowed */
4232 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4233 return -EINVAL;
4234 /* TDLS peers cannot be added */
4235 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4236 info->attrs[NL80211_ATTR_PEER_AID])
4237 return -EINVAL;
4238 break;
4239 case NL80211_IFTYPE_STATION:
4240 case NL80211_IFTYPE_P2P_CLIENT:
4241 /* ignore uAPSD data */
4242 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4243
4244 /* these are disallowed */
4245 if (params.sta_flags_mask &
4246 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4247 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4248 return -EINVAL;
4249 /* Only TDLS peers can be added */
4250 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4251 return -EINVAL;
4252 /* Can only add if TDLS ... */
4253 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4254 return -EOPNOTSUPP;
4255 /* ... with external setup is supported */
4256 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4257 return -EOPNOTSUPP;
4258 /*
4259 * Older wpa_supplicant versions always mark the TDLS peer
4260 * as authorized, but it shouldn't yet be.
4261 */
4262 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4263 break;
4264 default:
4265 return -EOPNOTSUPP;
4266 }
4267
4268 /* be aware of params.vlan when changing code here */
4269
4270 err = rdev_add_station(rdev, dev, mac_addr, &params);
4271
4272 if (params.vlan)
4273 dev_put(params.vlan);
4274 return err;
4275 }
4276
4277 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4278 {
4279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4280 struct net_device *dev = info->user_ptr[1];
4281 u8 *mac_addr = NULL;
4282
4283 if (info->attrs[NL80211_ATTR_MAC])
4284 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4285
4286 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4287 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4288 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4289 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4290 return -EINVAL;
4291
4292 if (!rdev->ops->del_station)
4293 return -EOPNOTSUPP;
4294
4295 return rdev_del_station(rdev, dev, mac_addr);
4296 }
4297
4298 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4299 int flags, struct net_device *dev,
4300 u8 *dst, u8 *next_hop,
4301 struct mpath_info *pinfo)
4302 {
4303 void *hdr;
4304 struct nlattr *pinfoattr;
4305
4306 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4307 if (!hdr)
4308 return -1;
4309
4310 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4311 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4312 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4313 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4314 goto nla_put_failure;
4315
4316 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4317 if (!pinfoattr)
4318 goto nla_put_failure;
4319 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4320 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4321 pinfo->frame_qlen))
4322 goto nla_put_failure;
4323 if (((pinfo->filled & MPATH_INFO_SN) &&
4324 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4325 ((pinfo->filled & MPATH_INFO_METRIC) &&
4326 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4327 pinfo->metric)) ||
4328 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4329 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4330 pinfo->exptime)) ||
4331 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4332 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4333 pinfo->flags)) ||
4334 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4335 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4336 pinfo->discovery_timeout)) ||
4337 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4338 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4339 pinfo->discovery_retries)))
4340 goto nla_put_failure;
4341
4342 nla_nest_end(msg, pinfoattr);
4343
4344 return genlmsg_end(msg, hdr);
4345
4346 nla_put_failure:
4347 genlmsg_cancel(msg, hdr);
4348 return -EMSGSIZE;
4349 }
4350
4351 static int nl80211_dump_mpath(struct sk_buff *skb,
4352 struct netlink_callback *cb)
4353 {
4354 struct mpath_info pinfo;
4355 struct cfg80211_registered_device *dev;
4356 struct wireless_dev *wdev;
4357 u8 dst[ETH_ALEN];
4358 u8 next_hop[ETH_ALEN];
4359 int path_idx = cb->args[2];
4360 int err;
4361
4362 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4363 if (err)
4364 return err;
4365
4366 if (!dev->ops->dump_mpath) {
4367 err = -EOPNOTSUPP;
4368 goto out_err;
4369 }
4370
4371 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4372 err = -EOPNOTSUPP;
4373 goto out_err;
4374 }
4375
4376 while (1) {
4377 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4378 next_hop, &pinfo);
4379 if (err == -ENOENT)
4380 break;
4381 if (err)
4382 goto out_err;
4383
4384 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4385 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4386 wdev->netdev, dst, next_hop,
4387 &pinfo) < 0)
4388 goto out;
4389
4390 path_idx++;
4391 }
4392
4393
4394 out:
4395 cb->args[2] = path_idx;
4396 err = skb->len;
4397 out_err:
4398 nl80211_finish_wdev_dump(dev);
4399 return err;
4400 }
4401
4402 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4403 {
4404 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4405 int err;
4406 struct net_device *dev = info->user_ptr[1];
4407 struct mpath_info pinfo;
4408 struct sk_buff *msg;
4409 u8 *dst = NULL;
4410 u8 next_hop[ETH_ALEN];
4411
4412 memset(&pinfo, 0, sizeof(pinfo));
4413
4414 if (!info->attrs[NL80211_ATTR_MAC])
4415 return -EINVAL;
4416
4417 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4418
4419 if (!rdev->ops->get_mpath)
4420 return -EOPNOTSUPP;
4421
4422 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4423 return -EOPNOTSUPP;
4424
4425 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4426 if (err)
4427 return err;
4428
4429 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4430 if (!msg)
4431 return -ENOMEM;
4432
4433 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4434 dev, dst, next_hop, &pinfo) < 0) {
4435 nlmsg_free(msg);
4436 return -ENOBUFS;
4437 }
4438
4439 return genlmsg_reply(msg, info);
4440 }
4441
4442 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4443 {
4444 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4445 struct net_device *dev = info->user_ptr[1];
4446 u8 *dst = NULL;
4447 u8 *next_hop = NULL;
4448
4449 if (!info->attrs[NL80211_ATTR_MAC])
4450 return -EINVAL;
4451
4452 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4453 return -EINVAL;
4454
4455 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4456 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4457
4458 if (!rdev->ops->change_mpath)
4459 return -EOPNOTSUPP;
4460
4461 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4462 return -EOPNOTSUPP;
4463
4464 return rdev_change_mpath(rdev, dev, dst, next_hop);
4465 }
4466
4467 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4468 {
4469 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4470 struct net_device *dev = info->user_ptr[1];
4471 u8 *dst = NULL;
4472 u8 *next_hop = NULL;
4473
4474 if (!info->attrs[NL80211_ATTR_MAC])
4475 return -EINVAL;
4476
4477 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4478 return -EINVAL;
4479
4480 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4481 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4482
4483 if (!rdev->ops->add_mpath)
4484 return -EOPNOTSUPP;
4485
4486 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4487 return -EOPNOTSUPP;
4488
4489 return rdev_add_mpath(rdev, dev, dst, next_hop);
4490 }
4491
4492 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4493 {
4494 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4495 struct net_device *dev = info->user_ptr[1];
4496 u8 *dst = NULL;
4497
4498 if (info->attrs[NL80211_ATTR_MAC])
4499 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4500
4501 if (!rdev->ops->del_mpath)
4502 return -EOPNOTSUPP;
4503
4504 return rdev_del_mpath(rdev, dev, dst);
4505 }
4506
4507 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4508 {
4509 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4510 struct net_device *dev = info->user_ptr[1];
4511 struct wireless_dev *wdev = dev->ieee80211_ptr;
4512 struct bss_parameters params;
4513 int err;
4514
4515 memset(&params, 0, sizeof(params));
4516 /* default to not changing parameters */
4517 params.use_cts_prot = -1;
4518 params.use_short_preamble = -1;
4519 params.use_short_slot_time = -1;
4520 params.ap_isolate = -1;
4521 params.ht_opmode = -1;
4522 params.p2p_ctwindow = -1;
4523 params.p2p_opp_ps = -1;
4524
4525 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4526 params.use_cts_prot =
4527 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4528 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4529 params.use_short_preamble =
4530 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4531 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4532 params.use_short_slot_time =
4533 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4534 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4535 params.basic_rates =
4536 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4537 params.basic_rates_len =
4538 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4539 }
4540 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4541 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4542 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4543 params.ht_opmode =
4544 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4545
4546 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4547 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4548 return -EINVAL;
4549 params.p2p_ctwindow =
4550 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4551 if (params.p2p_ctwindow < 0)
4552 return -EINVAL;
4553 if (params.p2p_ctwindow != 0 &&
4554 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4555 return -EINVAL;
4556 }
4557
4558 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4559 u8 tmp;
4560
4561 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4562 return -EINVAL;
4563 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4564 if (tmp > 1)
4565 return -EINVAL;
4566 params.p2p_opp_ps = tmp;
4567 if (params.p2p_opp_ps &&
4568 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4569 return -EINVAL;
4570 }
4571
4572 if (!rdev->ops->change_bss)
4573 return -EOPNOTSUPP;
4574
4575 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4576 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4577 return -EOPNOTSUPP;
4578
4579 wdev_lock(wdev);
4580 err = rdev_change_bss(rdev, dev, &params);
4581 wdev_unlock(wdev);
4582
4583 return err;
4584 }
4585
4586 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4587 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4588 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4589 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4590 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4591 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4592 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4593 };
4594
4595 static int parse_reg_rule(struct nlattr *tb[],
4596 struct ieee80211_reg_rule *reg_rule)
4597 {
4598 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4599 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4600
4601 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4602 return -EINVAL;
4603 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4604 return -EINVAL;
4605 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4606 return -EINVAL;
4607 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4608 return -EINVAL;
4609 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4610 return -EINVAL;
4611
4612 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4613
4614 freq_range->start_freq_khz =
4615 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4616 freq_range->end_freq_khz =
4617 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4618 freq_range->max_bandwidth_khz =
4619 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4620
4621 power_rule->max_eirp =
4622 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4623
4624 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4625 power_rule->max_antenna_gain =
4626 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4627
4628 return 0;
4629 }
4630
4631 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4632 {
4633 int r;
4634 char *data = NULL;
4635 enum nl80211_user_reg_hint_type user_reg_hint_type;
4636
4637 /*
4638 * You should only get this when cfg80211 hasn't yet initialized
4639 * completely when built-in to the kernel right between the time
4640 * window between nl80211_init() and regulatory_init(), if that is
4641 * even possible.
4642 */
4643 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4644 return -EINPROGRESS;
4645
4646 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4647 return -EINVAL;
4648
4649 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4650
4651 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4652 user_reg_hint_type =
4653 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4654 else
4655 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4656
4657 switch (user_reg_hint_type) {
4658 case NL80211_USER_REG_HINT_USER:
4659 case NL80211_USER_REG_HINT_CELL_BASE:
4660 break;
4661 default:
4662 return -EINVAL;
4663 }
4664
4665 r = regulatory_hint_user(data, user_reg_hint_type);
4666
4667 return r;
4668 }
4669
4670 static int nl80211_get_mesh_config(struct sk_buff *skb,
4671 struct genl_info *info)
4672 {
4673 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4674 struct net_device *dev = info->user_ptr[1];
4675 struct wireless_dev *wdev = dev->ieee80211_ptr;
4676 struct mesh_config cur_params;
4677 int err = 0;
4678 void *hdr;
4679 struct nlattr *pinfoattr;
4680 struct sk_buff *msg;
4681
4682 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4683 return -EOPNOTSUPP;
4684
4685 if (!rdev->ops->get_mesh_config)
4686 return -EOPNOTSUPP;
4687
4688 wdev_lock(wdev);
4689 /* If not connected, get default parameters */
4690 if (!wdev->mesh_id_len)
4691 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4692 else
4693 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4694 wdev_unlock(wdev);
4695
4696 if (err)
4697 return err;
4698
4699 /* Draw up a netlink message to send back */
4700 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4701 if (!msg)
4702 return -ENOMEM;
4703 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4704 NL80211_CMD_GET_MESH_CONFIG);
4705 if (!hdr)
4706 goto out;
4707 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4708 if (!pinfoattr)
4709 goto nla_put_failure;
4710 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4711 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4712 cur_params.dot11MeshRetryTimeout) ||
4713 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4714 cur_params.dot11MeshConfirmTimeout) ||
4715 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4716 cur_params.dot11MeshHoldingTimeout) ||
4717 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4718 cur_params.dot11MeshMaxPeerLinks) ||
4719 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4720 cur_params.dot11MeshMaxRetries) ||
4721 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4722 cur_params.dot11MeshTTL) ||
4723 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4724 cur_params.element_ttl) ||
4725 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4726 cur_params.auto_open_plinks) ||
4727 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4728 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4729 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4730 cur_params.dot11MeshHWMPmaxPREQretries) ||
4731 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4732 cur_params.path_refresh_time) ||
4733 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4734 cur_params.min_discovery_timeout) ||
4735 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4736 cur_params.dot11MeshHWMPactivePathTimeout) ||
4737 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4738 cur_params.dot11MeshHWMPpreqMinInterval) ||
4739 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4740 cur_params.dot11MeshHWMPperrMinInterval) ||
4741 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4742 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4743 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4744 cur_params.dot11MeshHWMPRootMode) ||
4745 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4746 cur_params.dot11MeshHWMPRannInterval) ||
4747 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4748 cur_params.dot11MeshGateAnnouncementProtocol) ||
4749 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4750 cur_params.dot11MeshForwarding) ||
4751 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4752 cur_params.rssi_threshold) ||
4753 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4754 cur_params.ht_opmode) ||
4755 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4756 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4757 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4758 cur_params.dot11MeshHWMProotInterval) ||
4759 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4760 cur_params.dot11MeshHWMPconfirmationInterval) ||
4761 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4762 cur_params.power_mode) ||
4763 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4764 cur_params.dot11MeshAwakeWindowDuration) ||
4765 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4766 cur_params.plink_timeout))
4767 goto nla_put_failure;
4768 nla_nest_end(msg, pinfoattr);
4769 genlmsg_end(msg, hdr);
4770 return genlmsg_reply(msg, info);
4771
4772 nla_put_failure:
4773 genlmsg_cancel(msg, hdr);
4774 out:
4775 nlmsg_free(msg);
4776 return -ENOBUFS;
4777 }
4778
4779 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4780 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4781 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4782 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4783 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4784 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4785 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4786 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4787 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4788 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4789 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4790 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4791 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4792 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4793 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4794 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4795 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4796 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4797 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4798 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4799 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4800 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4801 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4802 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4803 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4804 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4805 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4806 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4807 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4808 };
4809
4810 static const struct nla_policy
4811 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4812 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4813 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4814 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4815 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4816 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4817 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4818 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4819 .len = IEEE80211_MAX_DATA_LEN },
4820 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4821 };
4822
4823 static int nl80211_parse_mesh_config(struct genl_info *info,
4824 struct mesh_config *cfg,
4825 u32 *mask_out)
4826 {
4827 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4828 u32 mask = 0;
4829
4830 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4831 do { \
4832 if (tb[attr]) { \
4833 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4834 return -EINVAL; \
4835 cfg->param = fn(tb[attr]); \
4836 mask |= (1 << (attr - 1)); \
4837 } \
4838 } while (0)
4839
4840
4841 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4842 return -EINVAL;
4843 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4844 info->attrs[NL80211_ATTR_MESH_CONFIG],
4845 nl80211_meshconf_params_policy))
4846 return -EINVAL;
4847
4848 /* This makes sure that there aren't more than 32 mesh config
4849 * parameters (otherwise our bitfield scheme would not work.) */
4850 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4851
4852 /* Fill in the params struct */
4853 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4854 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4855 nla_get_u16);
4856 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4857 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4858 nla_get_u16);
4859 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4860 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4861 nla_get_u16);
4862 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4863 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4864 nla_get_u16);
4865 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4866 mask, NL80211_MESHCONF_MAX_RETRIES,
4867 nla_get_u8);
4868 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4869 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4870 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4871 mask, NL80211_MESHCONF_ELEMENT_TTL,
4872 nla_get_u8);
4873 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4874 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4875 nla_get_u8);
4876 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4877 1, 255, mask,
4878 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4879 nla_get_u32);
4880 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4881 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4882 nla_get_u8);
4883 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4884 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4885 nla_get_u32);
4886 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4887 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4888 nla_get_u16);
4889 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4890 1, 65535, mask,
4891 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4892 nla_get_u32);
4893 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4894 1, 65535, mask,
4895 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4896 nla_get_u16);
4897 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4898 1, 65535, mask,
4899 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4900 nla_get_u16);
4901 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4902 dot11MeshHWMPnetDiameterTraversalTime,
4903 1, 65535, mask,
4904 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4905 nla_get_u16);
4906 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4907 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4908 nla_get_u8);
4909 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4910 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4911 nla_get_u16);
4912 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4913 dot11MeshGateAnnouncementProtocol, 0, 1,
4914 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4915 nla_get_u8);
4916 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4917 mask, NL80211_MESHCONF_FORWARDING,
4918 nla_get_u8);
4919 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4920 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4921 nla_get_s32);
4922 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4923 mask, NL80211_MESHCONF_HT_OPMODE,
4924 nla_get_u16);
4925 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4926 1, 65535, mask,
4927 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4928 nla_get_u32);
4929 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4930 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4931 nla_get_u16);
4932 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4933 dot11MeshHWMPconfirmationInterval,
4934 1, 65535, mask,
4935 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4936 nla_get_u16);
4937 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4938 NL80211_MESH_POWER_ACTIVE,
4939 NL80211_MESH_POWER_MAX,
4940 mask, NL80211_MESHCONF_POWER_MODE,
4941 nla_get_u32);
4942 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4943 0, 65535, mask,
4944 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4945 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4946 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4947 nla_get_u32);
4948 if (mask_out)
4949 *mask_out = mask;
4950
4951 return 0;
4952
4953 #undef FILL_IN_MESH_PARAM_IF_SET
4954 }
4955
4956 static int nl80211_parse_mesh_setup(struct genl_info *info,
4957 struct mesh_setup *setup)
4958 {
4959 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4960 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4961
4962 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4963 return -EINVAL;
4964 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4965 info->attrs[NL80211_ATTR_MESH_SETUP],
4966 nl80211_mesh_setup_params_policy))
4967 return -EINVAL;
4968
4969 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4970 setup->sync_method =
4971 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4972 IEEE80211_SYNC_METHOD_VENDOR :
4973 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4974
4975 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4976 setup->path_sel_proto =
4977 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4978 IEEE80211_PATH_PROTOCOL_VENDOR :
4979 IEEE80211_PATH_PROTOCOL_HWMP;
4980
4981 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4982 setup->path_metric =
4983 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4984 IEEE80211_PATH_METRIC_VENDOR :
4985 IEEE80211_PATH_METRIC_AIRTIME;
4986
4987
4988 if (tb[NL80211_MESH_SETUP_IE]) {
4989 struct nlattr *ieattr =
4990 tb[NL80211_MESH_SETUP_IE];
4991 if (!is_valid_ie_attr(ieattr))
4992 return -EINVAL;
4993 setup->ie = nla_data(ieattr);
4994 setup->ie_len = nla_len(ieattr);
4995 }
4996 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4997 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4998 return -EINVAL;
4999 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5000 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5001 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5002 if (setup->is_secure)
5003 setup->user_mpm = true;
5004
5005 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5006 if (!setup->user_mpm)
5007 return -EINVAL;
5008 setup->auth_id =
5009 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5010 }
5011
5012 return 0;
5013 }
5014
5015 static int nl80211_update_mesh_config(struct sk_buff *skb,
5016 struct genl_info *info)
5017 {
5018 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5019 struct net_device *dev = info->user_ptr[1];
5020 struct wireless_dev *wdev = dev->ieee80211_ptr;
5021 struct mesh_config cfg;
5022 u32 mask;
5023 int err;
5024
5025 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5026 return -EOPNOTSUPP;
5027
5028 if (!rdev->ops->update_mesh_config)
5029 return -EOPNOTSUPP;
5030
5031 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5032 if (err)
5033 return err;
5034
5035 wdev_lock(wdev);
5036 if (!wdev->mesh_id_len)
5037 err = -ENOLINK;
5038
5039 if (!err)
5040 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5041
5042 wdev_unlock(wdev);
5043
5044 return err;
5045 }
5046
5047 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5048 {
5049 const struct ieee80211_regdomain *regdom;
5050 struct sk_buff *msg;
5051 void *hdr = NULL;
5052 struct nlattr *nl_reg_rules;
5053 unsigned int i;
5054
5055 if (!cfg80211_regdomain)
5056 return -EINVAL;
5057
5058 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5059 if (!msg)
5060 return -ENOBUFS;
5061
5062 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5063 NL80211_CMD_GET_REG);
5064 if (!hdr)
5065 goto put_failure;
5066
5067 if (reg_last_request_cell_base() &&
5068 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5069 NL80211_USER_REG_HINT_CELL_BASE))
5070 goto nla_put_failure;
5071
5072 rcu_read_lock();
5073 regdom = rcu_dereference(cfg80211_regdomain);
5074
5075 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5076 (regdom->dfs_region &&
5077 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5078 goto nla_put_failure_rcu;
5079
5080 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5081 if (!nl_reg_rules)
5082 goto nla_put_failure_rcu;
5083
5084 for (i = 0; i < regdom->n_reg_rules; i++) {
5085 struct nlattr *nl_reg_rule;
5086 const struct ieee80211_reg_rule *reg_rule;
5087 const struct ieee80211_freq_range *freq_range;
5088 const struct ieee80211_power_rule *power_rule;
5089
5090 reg_rule = &regdom->reg_rules[i];
5091 freq_range = &reg_rule->freq_range;
5092 power_rule = &reg_rule->power_rule;
5093
5094 nl_reg_rule = nla_nest_start(msg, i);
5095 if (!nl_reg_rule)
5096 goto nla_put_failure_rcu;
5097
5098 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5099 reg_rule->flags) ||
5100 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5101 freq_range->start_freq_khz) ||
5102 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5103 freq_range->end_freq_khz) ||
5104 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5105 freq_range->max_bandwidth_khz) ||
5106 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5107 power_rule->max_antenna_gain) ||
5108 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5109 power_rule->max_eirp))
5110 goto nla_put_failure_rcu;
5111
5112 nla_nest_end(msg, nl_reg_rule);
5113 }
5114 rcu_read_unlock();
5115
5116 nla_nest_end(msg, nl_reg_rules);
5117
5118 genlmsg_end(msg, hdr);
5119 return genlmsg_reply(msg, info);
5120
5121 nla_put_failure_rcu:
5122 rcu_read_unlock();
5123 nla_put_failure:
5124 genlmsg_cancel(msg, hdr);
5125 put_failure:
5126 nlmsg_free(msg);
5127 return -EMSGSIZE;
5128 }
5129
5130 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5131 {
5132 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5133 struct nlattr *nl_reg_rule;
5134 char *alpha2 = NULL;
5135 int rem_reg_rules = 0, r = 0;
5136 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5137 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5138 struct ieee80211_regdomain *rd = NULL;
5139
5140 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5141 return -EINVAL;
5142
5143 if (!info->attrs[NL80211_ATTR_REG_RULES])
5144 return -EINVAL;
5145
5146 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5147
5148 if (info->attrs[NL80211_ATTR_DFS_REGION])
5149 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5150
5151 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5152 rem_reg_rules) {
5153 num_rules++;
5154 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5155 return -EINVAL;
5156 }
5157
5158 if (!reg_is_valid_request(alpha2))
5159 return -EINVAL;
5160
5161 size_of_regd = sizeof(struct ieee80211_regdomain) +
5162 num_rules * sizeof(struct ieee80211_reg_rule);
5163
5164 rd = kzalloc(size_of_regd, GFP_KERNEL);
5165 if (!rd)
5166 return -ENOMEM;
5167
5168 rd->n_reg_rules = num_rules;
5169 rd->alpha2[0] = alpha2[0];
5170 rd->alpha2[1] = alpha2[1];
5171
5172 /*
5173 * Disable DFS master mode if the DFS region was
5174 * not supported or known on this kernel.
5175 */
5176 if (reg_supported_dfs_region(dfs_region))
5177 rd->dfs_region = dfs_region;
5178
5179 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5180 rem_reg_rules) {
5181 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5182 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5183 reg_rule_policy);
5184 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5185 if (r)
5186 goto bad_reg;
5187
5188 rule_idx++;
5189
5190 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5191 r = -EINVAL;
5192 goto bad_reg;
5193 }
5194 }
5195
5196 r = set_regdom(rd);
5197 /* set_regdom took ownership */
5198 rd = NULL;
5199
5200 bad_reg:
5201 kfree(rd);
5202 return r;
5203 }
5204
5205 static int validate_scan_freqs(struct nlattr *freqs)
5206 {
5207 struct nlattr *attr1, *attr2;
5208 int n_channels = 0, tmp1, tmp2;
5209
5210 nla_for_each_nested(attr1, freqs, tmp1) {
5211 n_channels++;
5212 /*
5213 * Some hardware has a limited channel list for
5214 * scanning, and it is pretty much nonsensical
5215 * to scan for a channel twice, so disallow that
5216 * and don't require drivers to check that the
5217 * channel list they get isn't longer than what
5218 * they can scan, as long as they can scan all
5219 * the channels they registered at once.
5220 */
5221 nla_for_each_nested(attr2, freqs, tmp2)
5222 if (attr1 != attr2 &&
5223 nla_get_u32(attr1) == nla_get_u32(attr2))
5224 return 0;
5225 }
5226
5227 return n_channels;
5228 }
5229
5230 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5231 {
5232 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5233 struct wireless_dev *wdev = info->user_ptr[1];
5234 struct cfg80211_scan_request *request;
5235 struct nlattr *attr;
5236 struct wiphy *wiphy;
5237 int err, tmp, n_ssids = 0, n_channels, i;
5238 size_t ie_len;
5239
5240 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5241 return -EINVAL;
5242
5243 wiphy = &rdev->wiphy;
5244
5245 if (!rdev->ops->scan)
5246 return -EOPNOTSUPP;
5247
5248 if (rdev->scan_req || rdev->scan_msg) {
5249 err = -EBUSY;
5250 goto unlock;
5251 }
5252
5253 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5254 n_channels = validate_scan_freqs(
5255 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5256 if (!n_channels) {
5257 err = -EINVAL;
5258 goto unlock;
5259 }
5260 } else {
5261 n_channels = ieee80211_get_num_supported_channels(wiphy);
5262 }
5263
5264 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5265 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5266 n_ssids++;
5267
5268 if (n_ssids > wiphy->max_scan_ssids) {
5269 err = -EINVAL;
5270 goto unlock;
5271 }
5272
5273 if (info->attrs[NL80211_ATTR_IE])
5274 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5275 else
5276 ie_len = 0;
5277
5278 if (ie_len > wiphy->max_scan_ie_len) {
5279 err = -EINVAL;
5280 goto unlock;
5281 }
5282
5283 request = kzalloc(sizeof(*request)
5284 + sizeof(*request->ssids) * n_ssids
5285 + sizeof(*request->channels) * n_channels
5286 + ie_len, GFP_KERNEL);
5287 if (!request) {
5288 err = -ENOMEM;
5289 goto unlock;
5290 }
5291
5292 if (n_ssids)
5293 request->ssids = (void *)&request->channels[n_channels];
5294 request->n_ssids = n_ssids;
5295 if (ie_len) {
5296 if (request->ssids)
5297 request->ie = (void *)(request->ssids + n_ssids);
5298 else
5299 request->ie = (void *)(request->channels + n_channels);
5300 }
5301
5302 i = 0;
5303 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5304 /* user specified, bail out if channel not found */
5305 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5306 struct ieee80211_channel *chan;
5307
5308 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5309
5310 if (!chan) {
5311 err = -EINVAL;
5312 goto out_free;
5313 }
5314
5315 /* ignore disabled channels */
5316 if (chan->flags & IEEE80211_CHAN_DISABLED)
5317 continue;
5318
5319 request->channels[i] = chan;
5320 i++;
5321 }
5322 } else {
5323 enum ieee80211_band band;
5324
5325 /* all channels */
5326 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5327 int j;
5328 if (!wiphy->bands[band])
5329 continue;
5330 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5331 struct ieee80211_channel *chan;
5332
5333 chan = &wiphy->bands[band]->channels[j];
5334
5335 if (chan->flags & IEEE80211_CHAN_DISABLED)
5336 continue;
5337
5338 request->channels[i] = chan;
5339 i++;
5340 }
5341 }
5342 }
5343
5344 if (!i) {
5345 err = -EINVAL;
5346 goto out_free;
5347 }
5348
5349 request->n_channels = i;
5350
5351 i = 0;
5352 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5353 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5354 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5355 err = -EINVAL;
5356 goto out_free;
5357 }
5358 request->ssids[i].ssid_len = nla_len(attr);
5359 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5360 i++;
5361 }
5362 }
5363
5364 if (info->attrs[NL80211_ATTR_IE]) {
5365 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5366 memcpy((void *)request->ie,
5367 nla_data(info->attrs[NL80211_ATTR_IE]),
5368 request->ie_len);
5369 }
5370
5371 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5372 if (wiphy->bands[i])
5373 request->rates[i] =
5374 (1 << wiphy->bands[i]->n_bitrates) - 1;
5375
5376 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5377 nla_for_each_nested(attr,
5378 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5379 tmp) {
5380 enum ieee80211_band band = nla_type(attr);
5381
5382 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5383 err = -EINVAL;
5384 goto out_free;
5385 }
5386
5387 if (!wiphy->bands[band])
5388 continue;
5389
5390 err = ieee80211_get_ratemask(wiphy->bands[band],
5391 nla_data(attr),
5392 nla_len(attr),
5393 &request->rates[band]);
5394 if (err)
5395 goto out_free;
5396 }
5397 }
5398
5399 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5400 request->flags = nla_get_u32(
5401 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5402 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5403 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5404 err = -EOPNOTSUPP;
5405 goto out_free;
5406 }
5407 }
5408
5409 request->no_cck =
5410 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5411
5412 request->wdev = wdev;
5413 request->wiphy = &rdev->wiphy;
5414 request->scan_start = jiffies;
5415
5416 rdev->scan_req = request;
5417 err = rdev_scan(rdev, request);
5418
5419 if (!err) {
5420 nl80211_send_scan_start(rdev, wdev);
5421 if (wdev->netdev)
5422 dev_hold(wdev->netdev);
5423 } else {
5424 out_free:
5425 rdev->scan_req = NULL;
5426 kfree(request);
5427 }
5428
5429 unlock:
5430 return err;
5431 }
5432
5433 static int nl80211_start_sched_scan(struct sk_buff *skb,
5434 struct genl_info *info)
5435 {
5436 struct cfg80211_sched_scan_request *request;
5437 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5438 struct net_device *dev = info->user_ptr[1];
5439 struct nlattr *attr;
5440 struct wiphy *wiphy;
5441 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5442 u32 interval;
5443 enum ieee80211_band band;
5444 size_t ie_len;
5445 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5446
5447 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5448 !rdev->ops->sched_scan_start)
5449 return -EOPNOTSUPP;
5450
5451 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5452 return -EINVAL;
5453
5454 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5455 return -EINVAL;
5456
5457 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5458 if (interval == 0)
5459 return -EINVAL;
5460
5461 wiphy = &rdev->wiphy;
5462
5463 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5464 n_channels = validate_scan_freqs(
5465 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5466 if (!n_channels)
5467 return -EINVAL;
5468 } else {
5469 n_channels = ieee80211_get_num_supported_channels(wiphy);
5470 }
5471
5472 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5473 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5474 tmp)
5475 n_ssids++;
5476
5477 if (n_ssids > wiphy->max_sched_scan_ssids)
5478 return -EINVAL;
5479
5480 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5481 nla_for_each_nested(attr,
5482 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5483 tmp)
5484 n_match_sets++;
5485
5486 if (n_match_sets > wiphy->max_match_sets)
5487 return -EINVAL;
5488
5489 if (info->attrs[NL80211_ATTR_IE])
5490 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5491 else
5492 ie_len = 0;
5493
5494 if (ie_len > wiphy->max_sched_scan_ie_len)
5495 return -EINVAL;
5496
5497 if (rdev->sched_scan_req) {
5498 err = -EINPROGRESS;
5499 goto out;
5500 }
5501
5502 request = kzalloc(sizeof(*request)
5503 + sizeof(*request->ssids) * n_ssids
5504 + sizeof(*request->match_sets) * n_match_sets
5505 + sizeof(*request->channels) * n_channels
5506 + ie_len, GFP_KERNEL);
5507 if (!request) {
5508 err = -ENOMEM;
5509 goto out;
5510 }
5511
5512 if (n_ssids)
5513 request->ssids = (void *)&request->channels[n_channels];
5514 request->n_ssids = n_ssids;
5515 if (ie_len) {
5516 if (request->ssids)
5517 request->ie = (void *)(request->ssids + n_ssids);
5518 else
5519 request->ie = (void *)(request->channels + n_channels);
5520 }
5521
5522 if (n_match_sets) {
5523 if (request->ie)
5524 request->match_sets = (void *)(request->ie + ie_len);
5525 else if (request->ssids)
5526 request->match_sets =
5527 (void *)(request->ssids + n_ssids);
5528 else
5529 request->match_sets =
5530 (void *)(request->channels + n_channels);
5531 }
5532 request->n_match_sets = n_match_sets;
5533
5534 i = 0;
5535 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5536 /* user specified, bail out if channel not found */
5537 nla_for_each_nested(attr,
5538 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5539 tmp) {
5540 struct ieee80211_channel *chan;
5541
5542 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5543
5544 if (!chan) {
5545 err = -EINVAL;
5546 goto out_free;
5547 }
5548
5549 /* ignore disabled channels */
5550 if (chan->flags & IEEE80211_CHAN_DISABLED)
5551 continue;
5552
5553 request->channels[i] = chan;
5554 i++;
5555 }
5556 } else {
5557 /* all channels */
5558 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5559 int j;
5560 if (!wiphy->bands[band])
5561 continue;
5562 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5563 struct ieee80211_channel *chan;
5564
5565 chan = &wiphy->bands[band]->channels[j];
5566
5567 if (chan->flags & IEEE80211_CHAN_DISABLED)
5568 continue;
5569
5570 request->channels[i] = chan;
5571 i++;
5572 }
5573 }
5574 }
5575
5576 if (!i) {
5577 err = -EINVAL;
5578 goto out_free;
5579 }
5580
5581 request->n_channels = i;
5582
5583 i = 0;
5584 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5585 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5586 tmp) {
5587 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5588 err = -EINVAL;
5589 goto out_free;
5590 }
5591 request->ssids[i].ssid_len = nla_len(attr);
5592 memcpy(request->ssids[i].ssid, nla_data(attr),
5593 nla_len(attr));
5594 i++;
5595 }
5596 }
5597
5598 i = 0;
5599 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5600 nla_for_each_nested(attr,
5601 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5602 tmp) {
5603 struct nlattr *ssid, *rssi;
5604
5605 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5606 nla_data(attr), nla_len(attr),
5607 nl80211_match_policy);
5608 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5609 if (ssid) {
5610 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5611 err = -EINVAL;
5612 goto out_free;
5613 }
5614 memcpy(request->match_sets[i].ssid.ssid,
5615 nla_data(ssid), nla_len(ssid));
5616 request->match_sets[i].ssid.ssid_len =
5617 nla_len(ssid);
5618 }
5619 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5620 if (rssi)
5621 request->rssi_thold = nla_get_u32(rssi);
5622 else
5623 request->rssi_thold =
5624 NL80211_SCAN_RSSI_THOLD_OFF;
5625 i++;
5626 }
5627 }
5628
5629 if (info->attrs[NL80211_ATTR_IE]) {
5630 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5631 memcpy((void *)request->ie,
5632 nla_data(info->attrs[NL80211_ATTR_IE]),
5633 request->ie_len);
5634 }
5635
5636 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5637 request->flags = nla_get_u32(
5638 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5639 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5640 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5641 err = -EOPNOTSUPP;
5642 goto out_free;
5643 }
5644 }
5645
5646 request->dev = dev;
5647 request->wiphy = &rdev->wiphy;
5648 request->interval = interval;
5649 request->scan_start = jiffies;
5650
5651 err = rdev_sched_scan_start(rdev, dev, request);
5652 if (!err) {
5653 rdev->sched_scan_req = request;
5654 nl80211_send_sched_scan(rdev, dev,
5655 NL80211_CMD_START_SCHED_SCAN);
5656 goto out;
5657 }
5658
5659 out_free:
5660 kfree(request);
5661 out:
5662 return err;
5663 }
5664
5665 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5666 struct genl_info *info)
5667 {
5668 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5669
5670 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5671 !rdev->ops->sched_scan_stop)
5672 return -EOPNOTSUPP;
5673
5674 return __cfg80211_stop_sched_scan(rdev, false);
5675 }
5676
5677 static int nl80211_start_radar_detection(struct sk_buff *skb,
5678 struct genl_info *info)
5679 {
5680 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5681 struct net_device *dev = info->user_ptr[1];
5682 struct wireless_dev *wdev = dev->ieee80211_ptr;
5683 struct cfg80211_chan_def chandef;
5684 enum nl80211_dfs_regions dfs_region;
5685 int err;
5686
5687 dfs_region = reg_get_dfs_region(wdev->wiphy);
5688 if (dfs_region == NL80211_DFS_UNSET)
5689 return -EINVAL;
5690
5691 err = nl80211_parse_chandef(rdev, info, &chandef);
5692 if (err)
5693 return err;
5694
5695 if (netif_carrier_ok(dev))
5696 return -EBUSY;
5697
5698 if (wdev->cac_started)
5699 return -EBUSY;
5700
5701 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5702 if (err < 0)
5703 return err;
5704
5705 if (err == 0)
5706 return -EINVAL;
5707
5708 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5709 return -EINVAL;
5710
5711 if (!rdev->ops->start_radar_detection)
5712 return -EOPNOTSUPP;
5713
5714 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5715 chandef.chan, CHAN_MODE_SHARED,
5716 BIT(chandef.width));
5717 if (err)
5718 return err;
5719
5720 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5721 if (!err) {
5722 wdev->channel = chandef.chan;
5723 wdev->cac_started = true;
5724 wdev->cac_start_time = jiffies;
5725 }
5726 return err;
5727 }
5728
5729 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5730 {
5731 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5732 struct net_device *dev = info->user_ptr[1];
5733 struct wireless_dev *wdev = dev->ieee80211_ptr;
5734 struct cfg80211_csa_settings params;
5735 /* csa_attrs is defined static to avoid waste of stack size - this
5736 * function is called under RTNL lock, so this should not be a problem.
5737 */
5738 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5739 u8 radar_detect_width = 0;
5740 int err;
5741 bool need_new_beacon = false;
5742
5743 if (!rdev->ops->channel_switch ||
5744 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5745 return -EOPNOTSUPP;
5746
5747 switch (dev->ieee80211_ptr->iftype) {
5748 case NL80211_IFTYPE_AP:
5749 case NL80211_IFTYPE_P2P_GO:
5750 need_new_beacon = true;
5751
5752 /* useless if AP is not running */
5753 if (!wdev->beacon_interval)
5754 return -EINVAL;
5755 break;
5756 case NL80211_IFTYPE_ADHOC:
5757 case NL80211_IFTYPE_MESH_POINT:
5758 break;
5759 default:
5760 return -EOPNOTSUPP;
5761 }
5762
5763 memset(&params, 0, sizeof(params));
5764
5765 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5766 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5767 return -EINVAL;
5768
5769 /* only important for AP, IBSS and mesh create IEs internally */
5770 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5771 return -EINVAL;
5772
5773 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5774
5775 if (!need_new_beacon)
5776 goto skip_beacons;
5777
5778 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5779 if (err)
5780 return err;
5781
5782 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5783 info->attrs[NL80211_ATTR_CSA_IES],
5784 nl80211_policy);
5785 if (err)
5786 return err;
5787
5788 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5789 if (err)
5790 return err;
5791
5792 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5793 return -EINVAL;
5794
5795 params.counter_offset_beacon =
5796 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5797 if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5798 return -EINVAL;
5799
5800 /* sanity check - counters should be the same */
5801 if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5802 params.count)
5803 return -EINVAL;
5804
5805 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5806 params.counter_offset_presp =
5807 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5808 if (params.counter_offset_presp >=
5809 params.beacon_csa.probe_resp_len)
5810 return -EINVAL;
5811
5812 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5813 params.count)
5814 return -EINVAL;
5815 }
5816
5817 skip_beacons:
5818 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5819 if (err)
5820 return err;
5821
5822 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5823 return -EINVAL;
5824
5825 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
5826 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
5827 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
5828 err = cfg80211_chandef_dfs_required(wdev->wiphy,
5829 &params.chandef);
5830 if (err < 0) {
5831 return err;
5832 } else if (err) {
5833 radar_detect_width = BIT(params.chandef.width);
5834 params.radar_required = true;
5835 }
5836 }
5837
5838 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5839 params.chandef.chan,
5840 CHAN_MODE_SHARED,
5841 radar_detect_width);
5842 if (err)
5843 return err;
5844
5845 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5846 params.block_tx = true;
5847
5848 wdev_lock(wdev);
5849 err = rdev_channel_switch(rdev, dev, &params);
5850 wdev_unlock(wdev);
5851
5852 return err;
5853 }
5854
5855 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5856 u32 seq, int flags,
5857 struct cfg80211_registered_device *rdev,
5858 struct wireless_dev *wdev,
5859 struct cfg80211_internal_bss *intbss)
5860 {
5861 struct cfg80211_bss *res = &intbss->pub;
5862 const struct cfg80211_bss_ies *ies;
5863 void *hdr;
5864 struct nlattr *bss;
5865 bool tsf = false;
5866
5867 ASSERT_WDEV_LOCK(wdev);
5868
5869 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5870 NL80211_CMD_NEW_SCAN_RESULTS);
5871 if (!hdr)
5872 return -1;
5873
5874 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5875
5876 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5877 goto nla_put_failure;
5878 if (wdev->netdev &&
5879 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5880 goto nla_put_failure;
5881 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5882 goto nla_put_failure;
5883
5884 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5885 if (!bss)
5886 goto nla_put_failure;
5887 if ((!is_zero_ether_addr(res->bssid) &&
5888 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5889 goto nla_put_failure;
5890
5891 rcu_read_lock();
5892 ies = rcu_dereference(res->ies);
5893 if (ies) {
5894 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5895 goto fail_unlock_rcu;
5896 tsf = true;
5897 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5898 ies->len, ies->data))
5899 goto fail_unlock_rcu;
5900 }
5901 ies = rcu_dereference(res->beacon_ies);
5902 if (ies) {
5903 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5904 goto fail_unlock_rcu;
5905 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5906 ies->len, ies->data))
5907 goto fail_unlock_rcu;
5908 }
5909 rcu_read_unlock();
5910
5911 if (res->beacon_interval &&
5912 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5913 goto nla_put_failure;
5914 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5915 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5916 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5917 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5918 jiffies_to_msecs(jiffies - intbss->ts)))
5919 goto nla_put_failure;
5920
5921 switch (rdev->wiphy.signal_type) {
5922 case CFG80211_SIGNAL_TYPE_MBM:
5923 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5924 goto nla_put_failure;
5925 break;
5926 case CFG80211_SIGNAL_TYPE_UNSPEC:
5927 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5928 goto nla_put_failure;
5929 break;
5930 default:
5931 break;
5932 }
5933
5934 switch (wdev->iftype) {
5935 case NL80211_IFTYPE_P2P_CLIENT:
5936 case NL80211_IFTYPE_STATION:
5937 if (intbss == wdev->current_bss &&
5938 nla_put_u32(msg, NL80211_BSS_STATUS,
5939 NL80211_BSS_STATUS_ASSOCIATED))
5940 goto nla_put_failure;
5941 break;
5942 case NL80211_IFTYPE_ADHOC:
5943 if (intbss == wdev->current_bss &&
5944 nla_put_u32(msg, NL80211_BSS_STATUS,
5945 NL80211_BSS_STATUS_IBSS_JOINED))
5946 goto nla_put_failure;
5947 break;
5948 default:
5949 break;
5950 }
5951
5952 nla_nest_end(msg, bss);
5953
5954 return genlmsg_end(msg, hdr);
5955
5956 fail_unlock_rcu:
5957 rcu_read_unlock();
5958 nla_put_failure:
5959 genlmsg_cancel(msg, hdr);
5960 return -EMSGSIZE;
5961 }
5962
5963 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5964 {
5965 struct cfg80211_registered_device *rdev;
5966 struct cfg80211_internal_bss *scan;
5967 struct wireless_dev *wdev;
5968 int start = cb->args[2], idx = 0;
5969 int err;
5970
5971 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5972 if (err)
5973 return err;
5974
5975 wdev_lock(wdev);
5976 spin_lock_bh(&rdev->bss_lock);
5977 cfg80211_bss_expire(rdev);
5978
5979 cb->seq = rdev->bss_generation;
5980
5981 list_for_each_entry(scan, &rdev->bss_list, list) {
5982 if (++idx <= start)
5983 continue;
5984 if (nl80211_send_bss(skb, cb,
5985 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5986 rdev, wdev, scan) < 0) {
5987 idx--;
5988 break;
5989 }
5990 }
5991
5992 spin_unlock_bh(&rdev->bss_lock);
5993 wdev_unlock(wdev);
5994
5995 cb->args[2] = idx;
5996 nl80211_finish_wdev_dump(rdev);
5997
5998 return skb->len;
5999 }
6000
6001 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6002 int flags, struct net_device *dev,
6003 struct survey_info *survey)
6004 {
6005 void *hdr;
6006 struct nlattr *infoattr;
6007
6008 hdr = nl80211hdr_put(msg, portid, seq, flags,
6009 NL80211_CMD_NEW_SURVEY_RESULTS);
6010 if (!hdr)
6011 return -ENOMEM;
6012
6013 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6014 goto nla_put_failure;
6015
6016 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6017 if (!infoattr)
6018 goto nla_put_failure;
6019
6020 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6021 survey->channel->center_freq))
6022 goto nla_put_failure;
6023
6024 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6025 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6026 goto nla_put_failure;
6027 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6028 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6029 goto nla_put_failure;
6030 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6031 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6032 survey->channel_time))
6033 goto nla_put_failure;
6034 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6035 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6036 survey->channel_time_busy))
6037 goto nla_put_failure;
6038 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6039 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6040 survey->channel_time_ext_busy))
6041 goto nla_put_failure;
6042 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6043 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6044 survey->channel_time_rx))
6045 goto nla_put_failure;
6046 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6047 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6048 survey->channel_time_tx))
6049 goto nla_put_failure;
6050
6051 nla_nest_end(msg, infoattr);
6052
6053 return genlmsg_end(msg, hdr);
6054
6055 nla_put_failure:
6056 genlmsg_cancel(msg, hdr);
6057 return -EMSGSIZE;
6058 }
6059
6060 static int nl80211_dump_survey(struct sk_buff *skb,
6061 struct netlink_callback *cb)
6062 {
6063 struct survey_info survey;
6064 struct cfg80211_registered_device *dev;
6065 struct wireless_dev *wdev;
6066 int survey_idx = cb->args[2];
6067 int res;
6068
6069 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
6070 if (res)
6071 return res;
6072
6073 if (!wdev->netdev) {
6074 res = -EINVAL;
6075 goto out_err;
6076 }
6077
6078 if (!dev->ops->dump_survey) {
6079 res = -EOPNOTSUPP;
6080 goto out_err;
6081 }
6082
6083 while (1) {
6084 struct ieee80211_channel *chan;
6085
6086 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
6087 if (res == -ENOENT)
6088 break;
6089 if (res)
6090 goto out_err;
6091
6092 /* Survey without a channel doesn't make sense */
6093 if (!survey.channel) {
6094 res = -EINVAL;
6095 goto out;
6096 }
6097
6098 chan = ieee80211_get_channel(&dev->wiphy,
6099 survey.channel->center_freq);
6100 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6101 survey_idx++;
6102 continue;
6103 }
6104
6105 if (nl80211_send_survey(skb,
6106 NETLINK_CB(cb->skb).portid,
6107 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6108 wdev->netdev, &survey) < 0)
6109 goto out;
6110 survey_idx++;
6111 }
6112
6113 out:
6114 cb->args[2] = survey_idx;
6115 res = skb->len;
6116 out_err:
6117 nl80211_finish_wdev_dump(dev);
6118 return res;
6119 }
6120
6121 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6122 {
6123 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6124 NL80211_WPA_VERSION_2));
6125 }
6126
6127 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6128 {
6129 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6130 struct net_device *dev = info->user_ptr[1];
6131 struct ieee80211_channel *chan;
6132 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6133 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6134 enum nl80211_auth_type auth_type;
6135 struct key_parse key;
6136 bool local_state_change;
6137
6138 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6139 return -EINVAL;
6140
6141 if (!info->attrs[NL80211_ATTR_MAC])
6142 return -EINVAL;
6143
6144 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6145 return -EINVAL;
6146
6147 if (!info->attrs[NL80211_ATTR_SSID])
6148 return -EINVAL;
6149
6150 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6151 return -EINVAL;
6152
6153 err = nl80211_parse_key(info, &key);
6154 if (err)
6155 return err;
6156
6157 if (key.idx >= 0) {
6158 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6159 return -EINVAL;
6160 if (!key.p.key || !key.p.key_len)
6161 return -EINVAL;
6162 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6163 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6164 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6165 key.p.key_len != WLAN_KEY_LEN_WEP104))
6166 return -EINVAL;
6167 if (key.idx > 4)
6168 return -EINVAL;
6169 } else {
6170 key.p.key_len = 0;
6171 key.p.key = NULL;
6172 }
6173
6174 if (key.idx >= 0) {
6175 int i;
6176 bool ok = false;
6177 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6178 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6179 ok = true;
6180 break;
6181 }
6182 }
6183 if (!ok)
6184 return -EINVAL;
6185 }
6186
6187 if (!rdev->ops->auth)
6188 return -EOPNOTSUPP;
6189
6190 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6191 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6192 return -EOPNOTSUPP;
6193
6194 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6195 chan = ieee80211_get_channel(&rdev->wiphy,
6196 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6197 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6198 return -EINVAL;
6199
6200 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6201 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6202
6203 if (info->attrs[NL80211_ATTR_IE]) {
6204 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6205 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6206 }
6207
6208 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6209 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6210 return -EINVAL;
6211
6212 if (auth_type == NL80211_AUTHTYPE_SAE &&
6213 !info->attrs[NL80211_ATTR_SAE_DATA])
6214 return -EINVAL;
6215
6216 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6217 if (auth_type != NL80211_AUTHTYPE_SAE)
6218 return -EINVAL;
6219 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6220 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6221 /* need to include at least Auth Transaction and Status Code */
6222 if (sae_data_len < 4)
6223 return -EINVAL;
6224 }
6225
6226 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6227
6228 /*
6229 * Since we no longer track auth state, ignore
6230 * requests to only change local state.
6231 */
6232 if (local_state_change)
6233 return 0;
6234
6235 wdev_lock(dev->ieee80211_ptr);
6236 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6237 ssid, ssid_len, ie, ie_len,
6238 key.p.key, key.p.key_len, key.idx,
6239 sae_data, sae_data_len);
6240 wdev_unlock(dev->ieee80211_ptr);
6241 return err;
6242 }
6243
6244 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6245 struct genl_info *info,
6246 struct cfg80211_crypto_settings *settings,
6247 int cipher_limit)
6248 {
6249 memset(settings, 0, sizeof(*settings));
6250
6251 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6252
6253 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6254 u16 proto;
6255 proto = nla_get_u16(
6256 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6257 settings->control_port_ethertype = cpu_to_be16(proto);
6258 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6259 proto != ETH_P_PAE)
6260 return -EINVAL;
6261 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6262 settings->control_port_no_encrypt = true;
6263 } else
6264 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6265
6266 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6267 void *data;
6268 int len, i;
6269
6270 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6271 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6272 settings->n_ciphers_pairwise = len / sizeof(u32);
6273
6274 if (len % sizeof(u32))
6275 return -EINVAL;
6276
6277 if (settings->n_ciphers_pairwise > cipher_limit)
6278 return -EINVAL;
6279
6280 memcpy(settings->ciphers_pairwise, data, len);
6281
6282 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6283 if (!cfg80211_supported_cipher_suite(
6284 &rdev->wiphy,
6285 settings->ciphers_pairwise[i]))
6286 return -EINVAL;
6287 }
6288
6289 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6290 settings->cipher_group =
6291 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6292 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6293 settings->cipher_group))
6294 return -EINVAL;
6295 }
6296
6297 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6298 settings->wpa_versions =
6299 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6300 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6301 return -EINVAL;
6302 }
6303
6304 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6305 void *data;
6306 int len;
6307
6308 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6309 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6310 settings->n_akm_suites = len / sizeof(u32);
6311
6312 if (len % sizeof(u32))
6313 return -EINVAL;
6314
6315 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6316 return -EINVAL;
6317
6318 memcpy(settings->akm_suites, data, len);
6319 }
6320
6321 return 0;
6322 }
6323
6324 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6325 {
6326 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6327 struct net_device *dev = info->user_ptr[1];
6328 struct ieee80211_channel *chan;
6329 struct cfg80211_assoc_request req = {};
6330 const u8 *bssid, *ssid;
6331 int err, ssid_len = 0;
6332
6333 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6334 return -EINVAL;
6335
6336 if (!info->attrs[NL80211_ATTR_MAC] ||
6337 !info->attrs[NL80211_ATTR_SSID] ||
6338 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6339 return -EINVAL;
6340
6341 if (!rdev->ops->assoc)
6342 return -EOPNOTSUPP;
6343
6344 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6345 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6346 return -EOPNOTSUPP;
6347
6348 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6349
6350 chan = ieee80211_get_channel(&rdev->wiphy,
6351 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6352 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6353 return -EINVAL;
6354
6355 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6356 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6357
6358 if (info->attrs[NL80211_ATTR_IE]) {
6359 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6360 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6361 }
6362
6363 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6364 enum nl80211_mfp mfp =
6365 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6366 if (mfp == NL80211_MFP_REQUIRED)
6367 req.use_mfp = true;
6368 else if (mfp != NL80211_MFP_NO)
6369 return -EINVAL;
6370 }
6371
6372 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6373 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6374
6375 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6376 req.flags |= ASSOC_REQ_DISABLE_HT;
6377
6378 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6379 memcpy(&req.ht_capa_mask,
6380 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6381 sizeof(req.ht_capa_mask));
6382
6383 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6384 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6385 return -EINVAL;
6386 memcpy(&req.ht_capa,
6387 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6388 sizeof(req.ht_capa));
6389 }
6390
6391 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6392 req.flags |= ASSOC_REQ_DISABLE_VHT;
6393
6394 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6395 memcpy(&req.vht_capa_mask,
6396 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6397 sizeof(req.vht_capa_mask));
6398
6399 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6400 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6401 return -EINVAL;
6402 memcpy(&req.vht_capa,
6403 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6404 sizeof(req.vht_capa));
6405 }
6406
6407 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6408 if (!err) {
6409 wdev_lock(dev->ieee80211_ptr);
6410 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6411 ssid, ssid_len, &req);
6412 wdev_unlock(dev->ieee80211_ptr);
6413 }
6414
6415 return err;
6416 }
6417
6418 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6419 {
6420 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6421 struct net_device *dev = info->user_ptr[1];
6422 const u8 *ie = NULL, *bssid;
6423 int ie_len = 0, err;
6424 u16 reason_code;
6425 bool local_state_change;
6426
6427 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6428 return -EINVAL;
6429
6430 if (!info->attrs[NL80211_ATTR_MAC])
6431 return -EINVAL;
6432
6433 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6434 return -EINVAL;
6435
6436 if (!rdev->ops->deauth)
6437 return -EOPNOTSUPP;
6438
6439 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6440 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6441 return -EOPNOTSUPP;
6442
6443 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6444
6445 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6446 if (reason_code == 0) {
6447 /* Reason Code 0 is reserved */
6448 return -EINVAL;
6449 }
6450
6451 if (info->attrs[NL80211_ATTR_IE]) {
6452 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6453 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6454 }
6455
6456 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6457
6458 wdev_lock(dev->ieee80211_ptr);
6459 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6460 local_state_change);
6461 wdev_unlock(dev->ieee80211_ptr);
6462 return err;
6463 }
6464
6465 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6466 {
6467 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6468 struct net_device *dev = info->user_ptr[1];
6469 const u8 *ie = NULL, *bssid;
6470 int ie_len = 0, err;
6471 u16 reason_code;
6472 bool local_state_change;
6473
6474 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6475 return -EINVAL;
6476
6477 if (!info->attrs[NL80211_ATTR_MAC])
6478 return -EINVAL;
6479
6480 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6481 return -EINVAL;
6482
6483 if (!rdev->ops->disassoc)
6484 return -EOPNOTSUPP;
6485
6486 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6487 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6488 return -EOPNOTSUPP;
6489
6490 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6491
6492 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6493 if (reason_code == 0) {
6494 /* Reason Code 0 is reserved */
6495 return -EINVAL;
6496 }
6497
6498 if (info->attrs[NL80211_ATTR_IE]) {
6499 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6500 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6501 }
6502
6503 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6504
6505 wdev_lock(dev->ieee80211_ptr);
6506 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6507 local_state_change);
6508 wdev_unlock(dev->ieee80211_ptr);
6509 return err;
6510 }
6511
6512 static bool
6513 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6514 int mcast_rate[IEEE80211_NUM_BANDS],
6515 int rateval)
6516 {
6517 struct wiphy *wiphy = &rdev->wiphy;
6518 bool found = false;
6519 int band, i;
6520
6521 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6522 struct ieee80211_supported_band *sband;
6523
6524 sband = wiphy->bands[band];
6525 if (!sband)
6526 continue;
6527
6528 for (i = 0; i < sband->n_bitrates; i++) {
6529 if (sband->bitrates[i].bitrate == rateval) {
6530 mcast_rate[band] = i + 1;
6531 found = true;
6532 break;
6533 }
6534 }
6535 }
6536
6537 return found;
6538 }
6539
6540 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6541 {
6542 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6543 struct net_device *dev = info->user_ptr[1];
6544 struct cfg80211_ibss_params ibss;
6545 struct wiphy *wiphy;
6546 struct cfg80211_cached_keys *connkeys = NULL;
6547 int err;
6548
6549 memset(&ibss, 0, sizeof(ibss));
6550
6551 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6552 return -EINVAL;
6553
6554 if (!info->attrs[NL80211_ATTR_SSID] ||
6555 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6556 return -EINVAL;
6557
6558 ibss.beacon_interval = 100;
6559
6560 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6561 ibss.beacon_interval =
6562 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6563 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6564 return -EINVAL;
6565 }
6566
6567 if (!rdev->ops->join_ibss)
6568 return -EOPNOTSUPP;
6569
6570 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6571 return -EOPNOTSUPP;
6572
6573 wiphy = &rdev->wiphy;
6574
6575 if (info->attrs[NL80211_ATTR_MAC]) {
6576 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6577
6578 if (!is_valid_ether_addr(ibss.bssid))
6579 return -EINVAL;
6580 }
6581 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6582 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6583
6584 if (info->attrs[NL80211_ATTR_IE]) {
6585 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6586 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6587 }
6588
6589 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6590 if (err)
6591 return err;
6592
6593 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6594 return -EINVAL;
6595
6596 switch (ibss.chandef.width) {
6597 case NL80211_CHAN_WIDTH_5:
6598 case NL80211_CHAN_WIDTH_10:
6599 case NL80211_CHAN_WIDTH_20_NOHT:
6600 break;
6601 case NL80211_CHAN_WIDTH_20:
6602 case NL80211_CHAN_WIDTH_40:
6603 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6604 break;
6605 default:
6606 return -EINVAL;
6607 }
6608
6609 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6610 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6611
6612 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6613 u8 *rates =
6614 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6615 int n_rates =
6616 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6617 struct ieee80211_supported_band *sband =
6618 wiphy->bands[ibss.chandef.chan->band];
6619
6620 err = ieee80211_get_ratemask(sband, rates, n_rates,
6621 &ibss.basic_rates);
6622 if (err)
6623 return err;
6624 }
6625
6626 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6627 memcpy(&ibss.ht_capa_mask,
6628 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6629 sizeof(ibss.ht_capa_mask));
6630
6631 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6632 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6633 return -EINVAL;
6634 memcpy(&ibss.ht_capa,
6635 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6636 sizeof(ibss.ht_capa));
6637 }
6638
6639 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6640 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6641 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6642 return -EINVAL;
6643
6644 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6645 bool no_ht = false;
6646
6647 connkeys = nl80211_parse_connkeys(rdev,
6648 info->attrs[NL80211_ATTR_KEYS],
6649 &no_ht);
6650 if (IS_ERR(connkeys))
6651 return PTR_ERR(connkeys);
6652
6653 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6654 no_ht) {
6655 kfree(connkeys);
6656 return -EINVAL;
6657 }
6658 }
6659
6660 ibss.control_port =
6661 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6662
6663 ibss.userspace_handles_dfs =
6664 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6665
6666 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6667 if (err)
6668 kfree(connkeys);
6669 return err;
6670 }
6671
6672 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6673 {
6674 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6675 struct net_device *dev = info->user_ptr[1];
6676
6677 if (!rdev->ops->leave_ibss)
6678 return -EOPNOTSUPP;
6679
6680 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6681 return -EOPNOTSUPP;
6682
6683 return cfg80211_leave_ibss(rdev, dev, false);
6684 }
6685
6686 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6687 {
6688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6689 struct net_device *dev = info->user_ptr[1];
6690 int mcast_rate[IEEE80211_NUM_BANDS];
6691 u32 nla_rate;
6692 int err;
6693
6694 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6695 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6696 return -EOPNOTSUPP;
6697
6698 if (!rdev->ops->set_mcast_rate)
6699 return -EOPNOTSUPP;
6700
6701 memset(mcast_rate, 0, sizeof(mcast_rate));
6702
6703 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6704 return -EINVAL;
6705
6706 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6707 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6708 return -EINVAL;
6709
6710 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6711
6712 return err;
6713 }
6714
6715 static struct sk_buff *
6716 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6717 int approxlen, u32 portid, u32 seq,
6718 enum nl80211_commands cmd,
6719 enum nl80211_attrs attr,
6720 const struct nl80211_vendor_cmd_info *info,
6721 gfp_t gfp)
6722 {
6723 struct sk_buff *skb;
6724 void *hdr;
6725 struct nlattr *data;
6726
6727 skb = nlmsg_new(approxlen + 100, gfp);
6728 if (!skb)
6729 return NULL;
6730
6731 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6732 if (!hdr) {
6733 kfree_skb(skb);
6734 return NULL;
6735 }
6736
6737 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6738 goto nla_put_failure;
6739
6740 if (info) {
6741 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6742 info->vendor_id))
6743 goto nla_put_failure;
6744 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6745 info->subcmd))
6746 goto nla_put_failure;
6747 }
6748
6749 data = nla_nest_start(skb, attr);
6750
6751 ((void **)skb->cb)[0] = rdev;
6752 ((void **)skb->cb)[1] = hdr;
6753 ((void **)skb->cb)[2] = data;
6754
6755 return skb;
6756
6757 nla_put_failure:
6758 kfree_skb(skb);
6759 return NULL;
6760 }
6761
6762 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6763 enum nl80211_commands cmd,
6764 enum nl80211_attrs attr,
6765 int vendor_event_idx,
6766 int approxlen, gfp_t gfp)
6767 {
6768 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6769 const struct nl80211_vendor_cmd_info *info;
6770
6771 switch (cmd) {
6772 case NL80211_CMD_TESTMODE:
6773 if (WARN_ON(vendor_event_idx != -1))
6774 return NULL;
6775 info = NULL;
6776 break;
6777 case NL80211_CMD_VENDOR:
6778 if (WARN_ON(vendor_event_idx < 0 ||
6779 vendor_event_idx >= wiphy->n_vendor_events))
6780 return NULL;
6781 info = &wiphy->vendor_events[vendor_event_idx];
6782 break;
6783 default:
6784 WARN_ON(1);
6785 return NULL;
6786 }
6787
6788 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
6789 cmd, attr, info, gfp);
6790 }
6791 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
6792
6793 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
6794 {
6795 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6796 void *hdr = ((void **)skb->cb)[1];
6797 struct nlattr *data = ((void **)skb->cb)[2];
6798 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
6799
6800 nla_nest_end(skb, data);
6801 genlmsg_end(skb, hdr);
6802
6803 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
6804 mcgrp = NL80211_MCGRP_VENDOR;
6805
6806 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
6807 mcgrp, gfp);
6808 }
6809 EXPORT_SYMBOL(__cfg80211_send_event_skb);
6810
6811 #ifdef CONFIG_NL80211_TESTMODE
6812 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6813 {
6814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6815 struct wireless_dev *wdev =
6816 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6817 int err;
6818
6819 if (!rdev->ops->testmode_cmd)
6820 return -EOPNOTSUPP;
6821
6822 if (IS_ERR(wdev)) {
6823 err = PTR_ERR(wdev);
6824 if (err != -EINVAL)
6825 return err;
6826 wdev = NULL;
6827 } else if (wdev->wiphy != &rdev->wiphy) {
6828 return -EINVAL;
6829 }
6830
6831 if (!info->attrs[NL80211_ATTR_TESTDATA])
6832 return -EINVAL;
6833
6834 rdev->cur_cmd_info = info;
6835 err = rdev_testmode_cmd(rdev, wdev,
6836 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6837 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6838 rdev->cur_cmd_info = NULL;
6839
6840 return err;
6841 }
6842
6843 static int nl80211_testmode_dump(struct sk_buff *skb,
6844 struct netlink_callback *cb)
6845 {
6846 struct cfg80211_registered_device *rdev;
6847 int err;
6848 long phy_idx;
6849 void *data = NULL;
6850 int data_len = 0;
6851
6852 rtnl_lock();
6853
6854 if (cb->args[0]) {
6855 /*
6856 * 0 is a valid index, but not valid for args[0],
6857 * so we need to offset by 1.
6858 */
6859 phy_idx = cb->args[0] - 1;
6860 } else {
6861 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6862 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6863 nl80211_policy);
6864 if (err)
6865 goto out_err;
6866
6867 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6868 nl80211_fam.attrbuf);
6869 if (IS_ERR(rdev)) {
6870 err = PTR_ERR(rdev);
6871 goto out_err;
6872 }
6873 phy_idx = rdev->wiphy_idx;
6874 rdev = NULL;
6875
6876 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6877 cb->args[1] =
6878 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6879 }
6880
6881 if (cb->args[1]) {
6882 data = nla_data((void *)cb->args[1]);
6883 data_len = nla_len((void *)cb->args[1]);
6884 }
6885
6886 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6887 if (!rdev) {
6888 err = -ENOENT;
6889 goto out_err;
6890 }
6891
6892 if (!rdev->ops->testmode_dump) {
6893 err = -EOPNOTSUPP;
6894 goto out_err;
6895 }
6896
6897 while (1) {
6898 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6899 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6900 NL80211_CMD_TESTMODE);
6901 struct nlattr *tmdata;
6902
6903 if (!hdr)
6904 break;
6905
6906 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6907 genlmsg_cancel(skb, hdr);
6908 break;
6909 }
6910
6911 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6912 if (!tmdata) {
6913 genlmsg_cancel(skb, hdr);
6914 break;
6915 }
6916 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6917 nla_nest_end(skb, tmdata);
6918
6919 if (err == -ENOBUFS || err == -ENOENT) {
6920 genlmsg_cancel(skb, hdr);
6921 break;
6922 } else if (err) {
6923 genlmsg_cancel(skb, hdr);
6924 goto out_err;
6925 }
6926
6927 genlmsg_end(skb, hdr);
6928 }
6929
6930 err = skb->len;
6931 /* see above */
6932 cb->args[0] = phy_idx + 1;
6933 out_err:
6934 rtnl_unlock();
6935 return err;
6936 }
6937 #endif
6938
6939 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6940 {
6941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6942 struct net_device *dev = info->user_ptr[1];
6943 struct cfg80211_connect_params connect;
6944 struct wiphy *wiphy;
6945 struct cfg80211_cached_keys *connkeys = NULL;
6946 int err;
6947
6948 memset(&connect, 0, sizeof(connect));
6949
6950 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6951 return -EINVAL;
6952
6953 if (!info->attrs[NL80211_ATTR_SSID] ||
6954 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6955 return -EINVAL;
6956
6957 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6958 connect.auth_type =
6959 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6960 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6961 NL80211_CMD_CONNECT))
6962 return -EINVAL;
6963 } else
6964 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6965
6966 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6967
6968 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6969 NL80211_MAX_NR_CIPHER_SUITES);
6970 if (err)
6971 return err;
6972
6973 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6974 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6975 return -EOPNOTSUPP;
6976
6977 wiphy = &rdev->wiphy;
6978
6979 connect.bg_scan_period = -1;
6980 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6981 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6982 connect.bg_scan_period =
6983 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6984 }
6985
6986 if (info->attrs[NL80211_ATTR_MAC])
6987 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6988 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6989 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6990
6991 if (info->attrs[NL80211_ATTR_IE]) {
6992 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6993 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6994 }
6995
6996 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6997 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6998 if (connect.mfp != NL80211_MFP_REQUIRED &&
6999 connect.mfp != NL80211_MFP_NO)
7000 return -EINVAL;
7001 } else {
7002 connect.mfp = NL80211_MFP_NO;
7003 }
7004
7005 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7006 connect.channel =
7007 ieee80211_get_channel(wiphy,
7008 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
7009 if (!connect.channel ||
7010 connect.channel->flags & IEEE80211_CHAN_DISABLED)
7011 return -EINVAL;
7012 }
7013
7014 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7015 connkeys = nl80211_parse_connkeys(rdev,
7016 info->attrs[NL80211_ATTR_KEYS], NULL);
7017 if (IS_ERR(connkeys))
7018 return PTR_ERR(connkeys);
7019 }
7020
7021 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7022 connect.flags |= ASSOC_REQ_DISABLE_HT;
7023
7024 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7025 memcpy(&connect.ht_capa_mask,
7026 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7027 sizeof(connect.ht_capa_mask));
7028
7029 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7030 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7031 kfree(connkeys);
7032 return -EINVAL;
7033 }
7034 memcpy(&connect.ht_capa,
7035 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7036 sizeof(connect.ht_capa));
7037 }
7038
7039 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7040 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7041
7042 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7043 memcpy(&connect.vht_capa_mask,
7044 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7045 sizeof(connect.vht_capa_mask));
7046
7047 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7048 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7049 kfree(connkeys);
7050 return -EINVAL;
7051 }
7052 memcpy(&connect.vht_capa,
7053 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7054 sizeof(connect.vht_capa));
7055 }
7056
7057 wdev_lock(dev->ieee80211_ptr);
7058 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7059 wdev_unlock(dev->ieee80211_ptr);
7060 if (err)
7061 kfree(connkeys);
7062 return err;
7063 }
7064
7065 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7066 {
7067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7068 struct net_device *dev = info->user_ptr[1];
7069 u16 reason;
7070 int ret;
7071
7072 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7073 reason = WLAN_REASON_DEAUTH_LEAVING;
7074 else
7075 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7076
7077 if (reason == 0)
7078 return -EINVAL;
7079
7080 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7081 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7082 return -EOPNOTSUPP;
7083
7084 wdev_lock(dev->ieee80211_ptr);
7085 ret = cfg80211_disconnect(rdev, dev, reason, true);
7086 wdev_unlock(dev->ieee80211_ptr);
7087 return ret;
7088 }
7089
7090 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7091 {
7092 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7093 struct net *net;
7094 int err;
7095 u32 pid;
7096
7097 if (!info->attrs[NL80211_ATTR_PID])
7098 return -EINVAL;
7099
7100 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7101
7102 net = get_net_ns_by_pid(pid);
7103 if (IS_ERR(net))
7104 return PTR_ERR(net);
7105
7106 err = 0;
7107
7108 /* check if anything to do */
7109 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7110 err = cfg80211_switch_netns(rdev, net);
7111
7112 put_net(net);
7113 return err;
7114 }
7115
7116 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7117 {
7118 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7119 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7120 struct cfg80211_pmksa *pmksa) = NULL;
7121 struct net_device *dev = info->user_ptr[1];
7122 struct cfg80211_pmksa pmksa;
7123
7124 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7125
7126 if (!info->attrs[NL80211_ATTR_MAC])
7127 return -EINVAL;
7128
7129 if (!info->attrs[NL80211_ATTR_PMKID])
7130 return -EINVAL;
7131
7132 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7133 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7134
7135 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7136 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7137 return -EOPNOTSUPP;
7138
7139 switch (info->genlhdr->cmd) {
7140 case NL80211_CMD_SET_PMKSA:
7141 rdev_ops = rdev->ops->set_pmksa;
7142 break;
7143 case NL80211_CMD_DEL_PMKSA:
7144 rdev_ops = rdev->ops->del_pmksa;
7145 break;
7146 default:
7147 WARN_ON(1);
7148 break;
7149 }
7150
7151 if (!rdev_ops)
7152 return -EOPNOTSUPP;
7153
7154 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7155 }
7156
7157 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7158 {
7159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7160 struct net_device *dev = info->user_ptr[1];
7161
7162 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7163 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7164 return -EOPNOTSUPP;
7165
7166 if (!rdev->ops->flush_pmksa)
7167 return -EOPNOTSUPP;
7168
7169 return rdev_flush_pmksa(rdev, dev);
7170 }
7171
7172 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7173 {
7174 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7175 struct net_device *dev = info->user_ptr[1];
7176 u8 action_code, dialog_token;
7177 u16 status_code;
7178 u8 *peer;
7179
7180 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7181 !rdev->ops->tdls_mgmt)
7182 return -EOPNOTSUPP;
7183
7184 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7185 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7186 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7187 !info->attrs[NL80211_ATTR_IE] ||
7188 !info->attrs[NL80211_ATTR_MAC])
7189 return -EINVAL;
7190
7191 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7192 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7193 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7194 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7195
7196 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7197 dialog_token, status_code,
7198 nla_data(info->attrs[NL80211_ATTR_IE]),
7199 nla_len(info->attrs[NL80211_ATTR_IE]));
7200 }
7201
7202 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7203 {
7204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7205 struct net_device *dev = info->user_ptr[1];
7206 enum nl80211_tdls_operation operation;
7207 u8 *peer;
7208
7209 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7210 !rdev->ops->tdls_oper)
7211 return -EOPNOTSUPP;
7212
7213 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7214 !info->attrs[NL80211_ATTR_MAC])
7215 return -EINVAL;
7216
7217 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7218 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7219
7220 return rdev_tdls_oper(rdev, dev, peer, operation);
7221 }
7222
7223 static int nl80211_remain_on_channel(struct sk_buff *skb,
7224 struct genl_info *info)
7225 {
7226 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7227 struct wireless_dev *wdev = info->user_ptr[1];
7228 struct cfg80211_chan_def chandef;
7229 struct sk_buff *msg;
7230 void *hdr;
7231 u64 cookie;
7232 u32 duration;
7233 int err;
7234
7235 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7236 !info->attrs[NL80211_ATTR_DURATION])
7237 return -EINVAL;
7238
7239 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7240
7241 if (!rdev->ops->remain_on_channel ||
7242 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7243 return -EOPNOTSUPP;
7244
7245 /*
7246 * We should be on that channel for at least a minimum amount of
7247 * time (10ms) but no longer than the driver supports.
7248 */
7249 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7250 duration > rdev->wiphy.max_remain_on_channel_duration)
7251 return -EINVAL;
7252
7253 err = nl80211_parse_chandef(rdev, info, &chandef);
7254 if (err)
7255 return err;
7256
7257 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7258 if (!msg)
7259 return -ENOMEM;
7260
7261 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7262 NL80211_CMD_REMAIN_ON_CHANNEL);
7263 if (!hdr) {
7264 err = -ENOBUFS;
7265 goto free_msg;
7266 }
7267
7268 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7269 duration, &cookie);
7270
7271 if (err)
7272 goto free_msg;
7273
7274 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7275 goto nla_put_failure;
7276
7277 genlmsg_end(msg, hdr);
7278
7279 return genlmsg_reply(msg, info);
7280
7281 nla_put_failure:
7282 err = -ENOBUFS;
7283 free_msg:
7284 nlmsg_free(msg);
7285 return err;
7286 }
7287
7288 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7289 struct genl_info *info)
7290 {
7291 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7292 struct wireless_dev *wdev = info->user_ptr[1];
7293 u64 cookie;
7294
7295 if (!info->attrs[NL80211_ATTR_COOKIE])
7296 return -EINVAL;
7297
7298 if (!rdev->ops->cancel_remain_on_channel)
7299 return -EOPNOTSUPP;
7300
7301 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7302
7303 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7304 }
7305
7306 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7307 u8 *rates, u8 rates_len)
7308 {
7309 u8 i;
7310 u32 mask = 0;
7311
7312 for (i = 0; i < rates_len; i++) {
7313 int rate = (rates[i] & 0x7f) * 5;
7314 int ridx;
7315 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7316 struct ieee80211_rate *srate =
7317 &sband->bitrates[ridx];
7318 if (rate == srate->bitrate) {
7319 mask |= 1 << ridx;
7320 break;
7321 }
7322 }
7323 if (ridx == sband->n_bitrates)
7324 return 0; /* rate not found */
7325 }
7326
7327 return mask;
7328 }
7329
7330 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7331 u8 *rates, u8 rates_len,
7332 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7333 {
7334 u8 i;
7335
7336 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7337
7338 for (i = 0; i < rates_len; i++) {
7339 int ridx, rbit;
7340
7341 ridx = rates[i] / 8;
7342 rbit = BIT(rates[i] % 8);
7343
7344 /* check validity */
7345 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7346 return false;
7347
7348 /* check availability */
7349 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7350 mcs[ridx] |= rbit;
7351 else
7352 return false;
7353 }
7354
7355 return true;
7356 }
7357
7358 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7359 {
7360 u16 mcs_mask = 0;
7361
7362 switch (vht_mcs_map) {
7363 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7364 break;
7365 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7366 mcs_mask = 0x00FF;
7367 break;
7368 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7369 mcs_mask = 0x01FF;
7370 break;
7371 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7372 mcs_mask = 0x03FF;
7373 break;
7374 default:
7375 break;
7376 }
7377
7378 return mcs_mask;
7379 }
7380
7381 static void vht_build_mcs_mask(u16 vht_mcs_map,
7382 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7383 {
7384 u8 nss;
7385
7386 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7387 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7388 vht_mcs_map >>= 2;
7389 }
7390 }
7391
7392 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7393 struct nl80211_txrate_vht *txrate,
7394 u16 mcs[NL80211_VHT_NSS_MAX])
7395 {
7396 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7397 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7398 u8 i;
7399
7400 if (!sband->vht_cap.vht_supported)
7401 return false;
7402
7403 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7404
7405 /* Build vht_mcs_mask from VHT capabilities */
7406 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7407
7408 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7409 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7410 mcs[i] = txrate->mcs[i];
7411 else
7412 return false;
7413 }
7414
7415 return true;
7416 }
7417
7418 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7419 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7420 .len = NL80211_MAX_SUPP_RATES },
7421 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7422 .len = NL80211_MAX_SUPP_HT_RATES },
7423 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7424 };
7425
7426 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7427 struct genl_info *info)
7428 {
7429 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7431 struct cfg80211_bitrate_mask mask;
7432 int rem, i;
7433 struct net_device *dev = info->user_ptr[1];
7434 struct nlattr *tx_rates;
7435 struct ieee80211_supported_band *sband;
7436 u16 vht_tx_mcs_map;
7437
7438 if (!rdev->ops->set_bitrate_mask)
7439 return -EOPNOTSUPP;
7440
7441 memset(&mask, 0, sizeof(mask));
7442 /* Default to all rates enabled */
7443 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7444 sband = rdev->wiphy.bands[i];
7445
7446 if (!sband)
7447 continue;
7448
7449 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7450 memcpy(mask.control[i].ht_mcs,
7451 sband->ht_cap.mcs.rx_mask,
7452 sizeof(mask.control[i].ht_mcs));
7453
7454 if (!sband->vht_cap.vht_supported)
7455 continue;
7456
7457 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7458 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7459 }
7460
7461 /* if no rates are given set it back to the defaults */
7462 if (!info->attrs[NL80211_ATTR_TX_RATES])
7463 goto out;
7464
7465 /*
7466 * The nested attribute uses enum nl80211_band as the index. This maps
7467 * directly to the enum ieee80211_band values used in cfg80211.
7468 */
7469 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7470 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7471 {
7472 enum ieee80211_band band = nla_type(tx_rates);
7473 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7474 return -EINVAL;
7475 sband = rdev->wiphy.bands[band];
7476 if (sband == NULL)
7477 return -EINVAL;
7478 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7479 nla_len(tx_rates), nl80211_txattr_policy);
7480 if (tb[NL80211_TXRATE_LEGACY]) {
7481 mask.control[band].legacy = rateset_to_mask(
7482 sband,
7483 nla_data(tb[NL80211_TXRATE_LEGACY]),
7484 nla_len(tb[NL80211_TXRATE_LEGACY]));
7485 if ((mask.control[band].legacy == 0) &&
7486 nla_len(tb[NL80211_TXRATE_LEGACY]))
7487 return -EINVAL;
7488 }
7489 if (tb[NL80211_TXRATE_HT]) {
7490 if (!ht_rateset_to_mask(
7491 sband,
7492 nla_data(tb[NL80211_TXRATE_HT]),
7493 nla_len(tb[NL80211_TXRATE_HT]),
7494 mask.control[band].ht_mcs))
7495 return -EINVAL;
7496 }
7497 if (tb[NL80211_TXRATE_VHT]) {
7498 if (!vht_set_mcs_mask(
7499 sband,
7500 nla_data(tb[NL80211_TXRATE_VHT]),
7501 mask.control[band].vht_mcs))
7502 return -EINVAL;
7503 }
7504
7505 if (mask.control[band].legacy == 0) {
7506 /* don't allow empty legacy rates if HT or VHT
7507 * are not even supported.
7508 */
7509 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7510 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7511 return -EINVAL;
7512
7513 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7514 if (mask.control[band].ht_mcs[i])
7515 goto out;
7516
7517 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7518 if (mask.control[band].vht_mcs[i])
7519 goto out;
7520
7521 /* legacy and mcs rates may not be both empty */
7522 return -EINVAL;
7523 }
7524 }
7525
7526 out:
7527 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7528 }
7529
7530 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7531 {
7532 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7533 struct wireless_dev *wdev = info->user_ptr[1];
7534 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7535
7536 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7537 return -EINVAL;
7538
7539 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7540 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7541
7542 switch (wdev->iftype) {
7543 case NL80211_IFTYPE_STATION:
7544 case NL80211_IFTYPE_ADHOC:
7545 case NL80211_IFTYPE_P2P_CLIENT:
7546 case NL80211_IFTYPE_AP:
7547 case NL80211_IFTYPE_AP_VLAN:
7548 case NL80211_IFTYPE_MESH_POINT:
7549 case NL80211_IFTYPE_P2P_GO:
7550 case NL80211_IFTYPE_P2P_DEVICE:
7551 break;
7552 default:
7553 return -EOPNOTSUPP;
7554 }
7555
7556 /* not much point in registering if we can't reply */
7557 if (!rdev->ops->mgmt_tx)
7558 return -EOPNOTSUPP;
7559
7560 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7561 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7562 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7563 }
7564
7565 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7566 {
7567 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7568 struct wireless_dev *wdev = info->user_ptr[1];
7569 struct cfg80211_chan_def chandef;
7570 int err;
7571 void *hdr = NULL;
7572 u64 cookie;
7573 struct sk_buff *msg = NULL;
7574 struct cfg80211_mgmt_tx_params params = {
7575 .dont_wait_for_ack =
7576 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7577 };
7578
7579 if (!info->attrs[NL80211_ATTR_FRAME])
7580 return -EINVAL;
7581
7582 if (!rdev->ops->mgmt_tx)
7583 return -EOPNOTSUPP;
7584
7585 switch (wdev->iftype) {
7586 case NL80211_IFTYPE_P2P_DEVICE:
7587 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7588 return -EINVAL;
7589 case NL80211_IFTYPE_STATION:
7590 case NL80211_IFTYPE_ADHOC:
7591 case NL80211_IFTYPE_P2P_CLIENT:
7592 case NL80211_IFTYPE_AP:
7593 case NL80211_IFTYPE_AP_VLAN:
7594 case NL80211_IFTYPE_MESH_POINT:
7595 case NL80211_IFTYPE_P2P_GO:
7596 break;
7597 default:
7598 return -EOPNOTSUPP;
7599 }
7600
7601 if (info->attrs[NL80211_ATTR_DURATION]) {
7602 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7603 return -EINVAL;
7604 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7605
7606 /*
7607 * We should wait on the channel for at least a minimum amount
7608 * of time (10ms) but no longer than the driver supports.
7609 */
7610 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7611 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7612 return -EINVAL;
7613
7614 }
7615
7616 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7617
7618 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7619 return -EINVAL;
7620
7621 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7622
7623 /* get the channel if any has been specified, otherwise pass NULL to
7624 * the driver. The latter will use the current one
7625 */
7626 chandef.chan = NULL;
7627 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7628 err = nl80211_parse_chandef(rdev, info, &chandef);
7629 if (err)
7630 return err;
7631 }
7632
7633 if (!chandef.chan && params.offchan)
7634 return -EINVAL;
7635
7636 if (!params.dont_wait_for_ack) {
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_FRAME);
7643 if (!hdr) {
7644 err = -ENOBUFS;
7645 goto free_msg;
7646 }
7647 }
7648
7649 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7650 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7651 params.chan = chandef.chan;
7652 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7653 if (err)
7654 goto free_msg;
7655
7656 if (msg) {
7657 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7658 goto nla_put_failure;
7659
7660 genlmsg_end(msg, hdr);
7661 return genlmsg_reply(msg, info);
7662 }
7663
7664 return 0;
7665
7666 nla_put_failure:
7667 err = -ENOBUFS;
7668 free_msg:
7669 nlmsg_free(msg);
7670 return err;
7671 }
7672
7673 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7674 {
7675 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7676 struct wireless_dev *wdev = info->user_ptr[1];
7677 u64 cookie;
7678
7679 if (!info->attrs[NL80211_ATTR_COOKIE])
7680 return -EINVAL;
7681
7682 if (!rdev->ops->mgmt_tx_cancel_wait)
7683 return -EOPNOTSUPP;
7684
7685 switch (wdev->iftype) {
7686 case NL80211_IFTYPE_STATION:
7687 case NL80211_IFTYPE_ADHOC:
7688 case NL80211_IFTYPE_P2P_CLIENT:
7689 case NL80211_IFTYPE_AP:
7690 case NL80211_IFTYPE_AP_VLAN:
7691 case NL80211_IFTYPE_P2P_GO:
7692 case NL80211_IFTYPE_P2P_DEVICE:
7693 break;
7694 default:
7695 return -EOPNOTSUPP;
7696 }
7697
7698 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7699
7700 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7701 }
7702
7703 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7704 {
7705 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7706 struct wireless_dev *wdev;
7707 struct net_device *dev = info->user_ptr[1];
7708 u8 ps_state;
7709 bool state;
7710 int err;
7711
7712 if (!info->attrs[NL80211_ATTR_PS_STATE])
7713 return -EINVAL;
7714
7715 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7716
7717 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7718 return -EINVAL;
7719
7720 wdev = dev->ieee80211_ptr;
7721
7722 if (!rdev->ops->set_power_mgmt)
7723 return -EOPNOTSUPP;
7724
7725 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7726
7727 if (state == wdev->ps)
7728 return 0;
7729
7730 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7731 if (!err)
7732 wdev->ps = state;
7733 return err;
7734 }
7735
7736 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7737 {
7738 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7739 enum nl80211_ps_state ps_state;
7740 struct wireless_dev *wdev;
7741 struct net_device *dev = info->user_ptr[1];
7742 struct sk_buff *msg;
7743 void *hdr;
7744 int err;
7745
7746 wdev = dev->ieee80211_ptr;
7747
7748 if (!rdev->ops->set_power_mgmt)
7749 return -EOPNOTSUPP;
7750
7751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7752 if (!msg)
7753 return -ENOMEM;
7754
7755 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7756 NL80211_CMD_GET_POWER_SAVE);
7757 if (!hdr) {
7758 err = -ENOBUFS;
7759 goto free_msg;
7760 }
7761
7762 if (wdev->ps)
7763 ps_state = NL80211_PS_ENABLED;
7764 else
7765 ps_state = NL80211_PS_DISABLED;
7766
7767 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7768 goto nla_put_failure;
7769
7770 genlmsg_end(msg, hdr);
7771 return genlmsg_reply(msg, info);
7772
7773 nla_put_failure:
7774 err = -ENOBUFS;
7775 free_msg:
7776 nlmsg_free(msg);
7777 return err;
7778 }
7779
7780 static struct nla_policy
7781 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7782 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7783 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7784 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7785 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7786 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7787 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7788 };
7789
7790 static int nl80211_set_cqm_txe(struct genl_info *info,
7791 u32 rate, u32 pkts, u32 intvl)
7792 {
7793 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7794 struct net_device *dev = info->user_ptr[1];
7795 struct wireless_dev *wdev = dev->ieee80211_ptr;
7796
7797 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7798 return -EINVAL;
7799
7800 if (!rdev->ops->set_cqm_txe_config)
7801 return -EOPNOTSUPP;
7802
7803 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7804 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7805 return -EOPNOTSUPP;
7806
7807 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7808 }
7809
7810 static int nl80211_set_cqm_rssi(struct genl_info *info,
7811 s32 threshold, u32 hysteresis)
7812 {
7813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7814 struct net_device *dev = info->user_ptr[1];
7815 struct wireless_dev *wdev = dev->ieee80211_ptr;
7816
7817 if (threshold > 0)
7818 return -EINVAL;
7819
7820 /* disabling - hysteresis should also be zero then */
7821 if (threshold == 0)
7822 hysteresis = 0;
7823
7824 if (!rdev->ops->set_cqm_rssi_config)
7825 return -EOPNOTSUPP;
7826
7827 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7828 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7829 return -EOPNOTSUPP;
7830
7831 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7832 }
7833
7834 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7835 {
7836 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7837 struct nlattr *cqm;
7838 int err;
7839
7840 cqm = info->attrs[NL80211_ATTR_CQM];
7841 if (!cqm)
7842 return -EINVAL;
7843
7844 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7845 nl80211_attr_cqm_policy);
7846 if (err)
7847 return err;
7848
7849 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7850 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7851 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7852 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7853
7854 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7855 }
7856
7857 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7858 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7859 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7860 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7861 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7862 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7863
7864 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7865 }
7866
7867 return -EINVAL;
7868 }
7869
7870 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7871 {
7872 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7873 struct net_device *dev = info->user_ptr[1];
7874 struct mesh_config cfg;
7875 struct mesh_setup setup;
7876 int err;
7877
7878 /* start with default */
7879 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7880 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7881
7882 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7883 /* and parse parameters if given */
7884 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7885 if (err)
7886 return err;
7887 }
7888
7889 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7890 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7891 return -EINVAL;
7892
7893 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7894 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7895
7896 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7897 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7898 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7899 return -EINVAL;
7900
7901 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7902 setup.beacon_interval =
7903 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7904 if (setup.beacon_interval < 10 ||
7905 setup.beacon_interval > 10000)
7906 return -EINVAL;
7907 }
7908
7909 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7910 setup.dtim_period =
7911 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7912 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7913 return -EINVAL;
7914 }
7915
7916 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7917 /* parse additional setup parameters if given */
7918 err = nl80211_parse_mesh_setup(info, &setup);
7919 if (err)
7920 return err;
7921 }
7922
7923 if (setup.user_mpm)
7924 cfg.auto_open_plinks = false;
7925
7926 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7927 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7928 if (err)
7929 return err;
7930 } else {
7931 /* cfg80211_join_mesh() will sort it out */
7932 setup.chandef.chan = NULL;
7933 }
7934
7935 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7936 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7937 int n_rates =
7938 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7939 struct ieee80211_supported_band *sband;
7940
7941 if (!setup.chandef.chan)
7942 return -EINVAL;
7943
7944 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7945
7946 err = ieee80211_get_ratemask(sband, rates, n_rates,
7947 &setup.basic_rates);
7948 if (err)
7949 return err;
7950 }
7951
7952 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7953 }
7954
7955 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7956 {
7957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7958 struct net_device *dev = info->user_ptr[1];
7959
7960 return cfg80211_leave_mesh(rdev, dev);
7961 }
7962
7963 #ifdef CONFIG_PM
7964 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7965 struct cfg80211_registered_device *rdev)
7966 {
7967 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7968 struct nlattr *nl_pats, *nl_pat;
7969 int i, pat_len;
7970
7971 if (!wowlan->n_patterns)
7972 return 0;
7973
7974 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7975 if (!nl_pats)
7976 return -ENOBUFS;
7977
7978 for (i = 0; i < wowlan->n_patterns; i++) {
7979 nl_pat = nla_nest_start(msg, i + 1);
7980 if (!nl_pat)
7981 return -ENOBUFS;
7982 pat_len = wowlan->patterns[i].pattern_len;
7983 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7984 wowlan->patterns[i].mask) ||
7985 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7986 wowlan->patterns[i].pattern) ||
7987 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7988 wowlan->patterns[i].pkt_offset))
7989 return -ENOBUFS;
7990 nla_nest_end(msg, nl_pat);
7991 }
7992 nla_nest_end(msg, nl_pats);
7993
7994 return 0;
7995 }
7996
7997 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7998 struct cfg80211_wowlan_tcp *tcp)
7999 {
8000 struct nlattr *nl_tcp;
8001
8002 if (!tcp)
8003 return 0;
8004
8005 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8006 if (!nl_tcp)
8007 return -ENOBUFS;
8008
8009 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8010 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8011 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8012 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8013 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8014 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8015 tcp->payload_len, tcp->payload) ||
8016 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8017 tcp->data_interval) ||
8018 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8019 tcp->wake_len, tcp->wake_data) ||
8020 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8021 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8022 return -ENOBUFS;
8023
8024 if (tcp->payload_seq.len &&
8025 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8026 sizeof(tcp->payload_seq), &tcp->payload_seq))
8027 return -ENOBUFS;
8028
8029 if (tcp->payload_tok.len &&
8030 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8031 sizeof(tcp->payload_tok) + tcp->tokens_size,
8032 &tcp->payload_tok))
8033 return -ENOBUFS;
8034
8035 nla_nest_end(msg, nl_tcp);
8036
8037 return 0;
8038 }
8039
8040 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8041 {
8042 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8043 struct sk_buff *msg;
8044 void *hdr;
8045 u32 size = NLMSG_DEFAULT_SIZE;
8046
8047 if (!rdev->wiphy.wowlan)
8048 return -EOPNOTSUPP;
8049
8050 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8051 /* adjust size to have room for all the data */
8052 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8053 rdev->wiphy.wowlan_config->tcp->payload_len +
8054 rdev->wiphy.wowlan_config->tcp->wake_len +
8055 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8056 }
8057
8058 msg = nlmsg_new(size, GFP_KERNEL);
8059 if (!msg)
8060 return -ENOMEM;
8061
8062 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8063 NL80211_CMD_GET_WOWLAN);
8064 if (!hdr)
8065 goto nla_put_failure;
8066
8067 if (rdev->wiphy.wowlan_config) {
8068 struct nlattr *nl_wowlan;
8069
8070 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8071 if (!nl_wowlan)
8072 goto nla_put_failure;
8073
8074 if ((rdev->wiphy.wowlan_config->any &&
8075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8076 (rdev->wiphy.wowlan_config->disconnect &&
8077 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8078 (rdev->wiphy.wowlan_config->magic_pkt &&
8079 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8080 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8081 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8082 (rdev->wiphy.wowlan_config->eap_identity_req &&
8083 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8084 (rdev->wiphy.wowlan_config->four_way_handshake &&
8085 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8086 (rdev->wiphy.wowlan_config->rfkill_release &&
8087 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8088 goto nla_put_failure;
8089
8090 if (nl80211_send_wowlan_patterns(msg, rdev))
8091 goto nla_put_failure;
8092
8093 if (nl80211_send_wowlan_tcp(msg,
8094 rdev->wiphy.wowlan_config->tcp))
8095 goto nla_put_failure;
8096
8097 nla_nest_end(msg, nl_wowlan);
8098 }
8099
8100 genlmsg_end(msg, hdr);
8101 return genlmsg_reply(msg, info);
8102
8103 nla_put_failure:
8104 nlmsg_free(msg);
8105 return -ENOBUFS;
8106 }
8107
8108 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8109 struct nlattr *attr,
8110 struct cfg80211_wowlan *trig)
8111 {
8112 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8113 struct cfg80211_wowlan_tcp *cfg;
8114 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8115 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8116 u32 size;
8117 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8118 int err, port;
8119
8120 if (!rdev->wiphy.wowlan->tcp)
8121 return -EINVAL;
8122
8123 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8124 nla_data(attr), nla_len(attr),
8125 nl80211_wowlan_tcp_policy);
8126 if (err)
8127 return err;
8128
8129 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8130 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8131 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8132 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8133 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8134 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8135 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8136 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8137 return -EINVAL;
8138
8139 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8140 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8141 return -EINVAL;
8142
8143 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8144 rdev->wiphy.wowlan->tcp->data_interval_max ||
8145 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8146 return -EINVAL;
8147
8148 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8149 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8150 return -EINVAL;
8151
8152 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8153 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8154 return -EINVAL;
8155
8156 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8157 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8158
8159 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8160 tokens_size = tokln - sizeof(*tok);
8161
8162 if (!tok->len || tokens_size % tok->len)
8163 return -EINVAL;
8164 if (!rdev->wiphy.wowlan->tcp->tok)
8165 return -EINVAL;
8166 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8167 return -EINVAL;
8168 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8169 return -EINVAL;
8170 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8171 return -EINVAL;
8172 if (tok->offset + tok->len > data_size)
8173 return -EINVAL;
8174 }
8175
8176 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8177 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8178 if (!rdev->wiphy.wowlan->tcp->seq)
8179 return -EINVAL;
8180 if (seq->len == 0 || seq->len > 4)
8181 return -EINVAL;
8182 if (seq->len + seq->offset > data_size)
8183 return -EINVAL;
8184 }
8185
8186 size = sizeof(*cfg);
8187 size += data_size;
8188 size += wake_size + wake_mask_size;
8189 size += tokens_size;
8190
8191 cfg = kzalloc(size, GFP_KERNEL);
8192 if (!cfg)
8193 return -ENOMEM;
8194 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8195 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8196 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8197 ETH_ALEN);
8198 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8199 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8200 else
8201 port = 0;
8202 #ifdef CONFIG_INET
8203 /* allocate a socket and port for it and use it */
8204 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8205 IPPROTO_TCP, &cfg->sock, 1);
8206 if (err) {
8207 kfree(cfg);
8208 return err;
8209 }
8210 if (inet_csk_get_port(cfg->sock->sk, port)) {
8211 sock_release(cfg->sock);
8212 kfree(cfg);
8213 return -EADDRINUSE;
8214 }
8215 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8216 #else
8217 if (!port) {
8218 kfree(cfg);
8219 return -EINVAL;
8220 }
8221 cfg->src_port = port;
8222 #endif
8223
8224 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8225 cfg->payload_len = data_size;
8226 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8227 memcpy((void *)cfg->payload,
8228 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8229 data_size);
8230 if (seq)
8231 cfg->payload_seq = *seq;
8232 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8233 cfg->wake_len = wake_size;
8234 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8235 memcpy((void *)cfg->wake_data,
8236 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8237 wake_size);
8238 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8239 data_size + wake_size;
8240 memcpy((void *)cfg->wake_mask,
8241 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8242 wake_mask_size);
8243 if (tok) {
8244 cfg->tokens_size = tokens_size;
8245 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8246 }
8247
8248 trig->tcp = cfg;
8249
8250 return 0;
8251 }
8252
8253 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8254 {
8255 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8256 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8257 struct cfg80211_wowlan new_triggers = {};
8258 struct cfg80211_wowlan *ntrig;
8259 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8260 int err, i;
8261 bool prev_enabled = rdev->wiphy.wowlan_config;
8262
8263 if (!wowlan)
8264 return -EOPNOTSUPP;
8265
8266 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8267 cfg80211_rdev_free_wowlan(rdev);
8268 rdev->wiphy.wowlan_config = NULL;
8269 goto set_wakeup;
8270 }
8271
8272 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8273 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8274 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8275 nl80211_wowlan_policy);
8276 if (err)
8277 return err;
8278
8279 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8280 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8281 return -EINVAL;
8282 new_triggers.any = true;
8283 }
8284
8285 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8286 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8287 return -EINVAL;
8288 new_triggers.disconnect = true;
8289 }
8290
8291 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8292 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8293 return -EINVAL;
8294 new_triggers.magic_pkt = true;
8295 }
8296
8297 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8298 return -EINVAL;
8299
8300 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8301 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8302 return -EINVAL;
8303 new_triggers.gtk_rekey_failure = true;
8304 }
8305
8306 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8307 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8308 return -EINVAL;
8309 new_triggers.eap_identity_req = true;
8310 }
8311
8312 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8313 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8314 return -EINVAL;
8315 new_triggers.four_way_handshake = true;
8316 }
8317
8318 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8319 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8320 return -EINVAL;
8321 new_triggers.rfkill_release = true;
8322 }
8323
8324 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8325 struct nlattr *pat;
8326 int n_patterns = 0;
8327 int rem, pat_len, mask_len, pkt_offset;
8328 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8329
8330 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8331 rem)
8332 n_patterns++;
8333 if (n_patterns > wowlan->n_patterns)
8334 return -EINVAL;
8335
8336 new_triggers.patterns = kcalloc(n_patterns,
8337 sizeof(new_triggers.patterns[0]),
8338 GFP_KERNEL);
8339 if (!new_triggers.patterns)
8340 return -ENOMEM;
8341
8342 new_triggers.n_patterns = n_patterns;
8343 i = 0;
8344
8345 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8346 rem) {
8347 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8348 nla_len(pat), NULL);
8349 err = -EINVAL;
8350 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8351 !pat_tb[NL80211_PKTPAT_PATTERN])
8352 goto error;
8353 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8354 mask_len = DIV_ROUND_UP(pat_len, 8);
8355 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8356 goto error;
8357 if (pat_len > wowlan->pattern_max_len ||
8358 pat_len < wowlan->pattern_min_len)
8359 goto error;
8360
8361 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8362 pkt_offset = 0;
8363 else
8364 pkt_offset = nla_get_u32(
8365 pat_tb[NL80211_PKTPAT_OFFSET]);
8366 if (pkt_offset > wowlan->max_pkt_offset)
8367 goto error;
8368 new_triggers.patterns[i].pkt_offset = pkt_offset;
8369
8370 new_triggers.patterns[i].mask =
8371 kmalloc(mask_len + pat_len, GFP_KERNEL);
8372 if (!new_triggers.patterns[i].mask) {
8373 err = -ENOMEM;
8374 goto error;
8375 }
8376 new_triggers.patterns[i].pattern =
8377 new_triggers.patterns[i].mask + mask_len;
8378 memcpy(new_triggers.patterns[i].mask,
8379 nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8380 mask_len);
8381 new_triggers.patterns[i].pattern_len = pat_len;
8382 memcpy(new_triggers.patterns[i].pattern,
8383 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8384 pat_len);
8385 i++;
8386 }
8387 }
8388
8389 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8390 err = nl80211_parse_wowlan_tcp(
8391 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8392 &new_triggers);
8393 if (err)
8394 goto error;
8395 }
8396
8397 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8398 if (!ntrig) {
8399 err = -ENOMEM;
8400 goto error;
8401 }
8402 cfg80211_rdev_free_wowlan(rdev);
8403 rdev->wiphy.wowlan_config = ntrig;
8404
8405 set_wakeup:
8406 if (rdev->ops->set_wakeup &&
8407 prev_enabled != !!rdev->wiphy.wowlan_config)
8408 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8409
8410 return 0;
8411 error:
8412 for (i = 0; i < new_triggers.n_patterns; i++)
8413 kfree(new_triggers.patterns[i].mask);
8414 kfree(new_triggers.patterns);
8415 if (new_triggers.tcp && new_triggers.tcp->sock)
8416 sock_release(new_triggers.tcp->sock);
8417 kfree(new_triggers.tcp);
8418 return err;
8419 }
8420 #endif
8421
8422 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8423 struct cfg80211_registered_device *rdev)
8424 {
8425 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8426 int i, j, pat_len;
8427 struct cfg80211_coalesce_rules *rule;
8428
8429 if (!rdev->coalesce->n_rules)
8430 return 0;
8431
8432 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8433 if (!nl_rules)
8434 return -ENOBUFS;
8435
8436 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8437 nl_rule = nla_nest_start(msg, i + 1);
8438 if (!nl_rule)
8439 return -ENOBUFS;
8440
8441 rule = &rdev->coalesce->rules[i];
8442 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8443 rule->delay))
8444 return -ENOBUFS;
8445
8446 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8447 rule->condition))
8448 return -ENOBUFS;
8449
8450 nl_pats = nla_nest_start(msg,
8451 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8452 if (!nl_pats)
8453 return -ENOBUFS;
8454
8455 for (j = 0; j < rule->n_patterns; j++) {
8456 nl_pat = nla_nest_start(msg, j + 1);
8457 if (!nl_pat)
8458 return -ENOBUFS;
8459 pat_len = rule->patterns[j].pattern_len;
8460 if (nla_put(msg, NL80211_PKTPAT_MASK,
8461 DIV_ROUND_UP(pat_len, 8),
8462 rule->patterns[j].mask) ||
8463 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8464 rule->patterns[j].pattern) ||
8465 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8466 rule->patterns[j].pkt_offset))
8467 return -ENOBUFS;
8468 nla_nest_end(msg, nl_pat);
8469 }
8470 nla_nest_end(msg, nl_pats);
8471 nla_nest_end(msg, nl_rule);
8472 }
8473 nla_nest_end(msg, nl_rules);
8474
8475 return 0;
8476 }
8477
8478 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8479 {
8480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8481 struct sk_buff *msg;
8482 void *hdr;
8483
8484 if (!rdev->wiphy.coalesce)
8485 return -EOPNOTSUPP;
8486
8487 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8488 if (!msg)
8489 return -ENOMEM;
8490
8491 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8492 NL80211_CMD_GET_COALESCE);
8493 if (!hdr)
8494 goto nla_put_failure;
8495
8496 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8497 goto nla_put_failure;
8498
8499 genlmsg_end(msg, hdr);
8500 return genlmsg_reply(msg, info);
8501
8502 nla_put_failure:
8503 nlmsg_free(msg);
8504 return -ENOBUFS;
8505 }
8506
8507 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8508 {
8509 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8510 int i, j;
8511 struct cfg80211_coalesce_rules *rule;
8512
8513 if (!coalesce)
8514 return;
8515
8516 for (i = 0; i < coalesce->n_rules; i++) {
8517 rule = &coalesce->rules[i];
8518 for (j = 0; j < rule->n_patterns; j++)
8519 kfree(rule->patterns[j].mask);
8520 kfree(rule->patterns);
8521 }
8522 kfree(coalesce->rules);
8523 kfree(coalesce);
8524 rdev->coalesce = NULL;
8525 }
8526
8527 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8528 struct nlattr *rule,
8529 struct cfg80211_coalesce_rules *new_rule)
8530 {
8531 int err, i;
8532 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8533 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8534 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8535 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8536
8537 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8538 nla_len(rule), nl80211_coalesce_policy);
8539 if (err)
8540 return err;
8541
8542 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8543 new_rule->delay =
8544 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8545 if (new_rule->delay > coalesce->max_delay)
8546 return -EINVAL;
8547
8548 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8549 new_rule->condition =
8550 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8551 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8552 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8553 return -EINVAL;
8554
8555 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8556 return -EINVAL;
8557
8558 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8559 rem)
8560 n_patterns++;
8561 if (n_patterns > coalesce->n_patterns)
8562 return -EINVAL;
8563
8564 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8565 GFP_KERNEL);
8566 if (!new_rule->patterns)
8567 return -ENOMEM;
8568
8569 new_rule->n_patterns = n_patterns;
8570 i = 0;
8571
8572 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8573 rem) {
8574 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8575 nla_len(pat), NULL);
8576 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8577 !pat_tb[NL80211_PKTPAT_PATTERN])
8578 return -EINVAL;
8579 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8580 mask_len = DIV_ROUND_UP(pat_len, 8);
8581 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8582 return -EINVAL;
8583 if (pat_len > coalesce->pattern_max_len ||
8584 pat_len < coalesce->pattern_min_len)
8585 return -EINVAL;
8586
8587 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8588 pkt_offset = 0;
8589 else
8590 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8591 if (pkt_offset > coalesce->max_pkt_offset)
8592 return -EINVAL;
8593 new_rule->patterns[i].pkt_offset = pkt_offset;
8594
8595 new_rule->patterns[i].mask =
8596 kmalloc(mask_len + pat_len, GFP_KERNEL);
8597 if (!new_rule->patterns[i].mask)
8598 return -ENOMEM;
8599 new_rule->patterns[i].pattern =
8600 new_rule->patterns[i].mask + mask_len;
8601 memcpy(new_rule->patterns[i].mask,
8602 nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8603 new_rule->patterns[i].pattern_len = pat_len;
8604 memcpy(new_rule->patterns[i].pattern,
8605 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8606 i++;
8607 }
8608
8609 return 0;
8610 }
8611
8612 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8613 {
8614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8615 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8616 struct cfg80211_coalesce new_coalesce = {};
8617 struct cfg80211_coalesce *n_coalesce;
8618 int err, rem_rule, n_rules = 0, i, j;
8619 struct nlattr *rule;
8620 struct cfg80211_coalesce_rules *tmp_rule;
8621
8622 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8623 return -EOPNOTSUPP;
8624
8625 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8626 cfg80211_rdev_free_coalesce(rdev);
8627 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8628 return 0;
8629 }
8630
8631 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8632 rem_rule)
8633 n_rules++;
8634 if (n_rules > coalesce->n_rules)
8635 return -EINVAL;
8636
8637 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8638 GFP_KERNEL);
8639 if (!new_coalesce.rules)
8640 return -ENOMEM;
8641
8642 new_coalesce.n_rules = n_rules;
8643 i = 0;
8644
8645 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8646 rem_rule) {
8647 err = nl80211_parse_coalesce_rule(rdev, rule,
8648 &new_coalesce.rules[i]);
8649 if (err)
8650 goto error;
8651
8652 i++;
8653 }
8654
8655 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8656 if (err)
8657 goto error;
8658
8659 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8660 if (!n_coalesce) {
8661 err = -ENOMEM;
8662 goto error;
8663 }
8664 cfg80211_rdev_free_coalesce(rdev);
8665 rdev->coalesce = n_coalesce;
8666
8667 return 0;
8668 error:
8669 for (i = 0; i < new_coalesce.n_rules; i++) {
8670 tmp_rule = &new_coalesce.rules[i];
8671 for (j = 0; j < tmp_rule->n_patterns; j++)
8672 kfree(tmp_rule->patterns[j].mask);
8673 kfree(tmp_rule->patterns);
8674 }
8675 kfree(new_coalesce.rules);
8676
8677 return err;
8678 }
8679
8680 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8681 {
8682 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8683 struct net_device *dev = info->user_ptr[1];
8684 struct wireless_dev *wdev = dev->ieee80211_ptr;
8685 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8686 struct cfg80211_gtk_rekey_data rekey_data;
8687 int err;
8688
8689 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8690 return -EINVAL;
8691
8692 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8693 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8694 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8695 nl80211_rekey_policy);
8696 if (err)
8697 return err;
8698
8699 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8700 return -ERANGE;
8701 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8702 return -ERANGE;
8703 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8704 return -ERANGE;
8705
8706 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8707 NL80211_KEK_LEN);
8708 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8709 NL80211_KCK_LEN);
8710 memcpy(rekey_data.replay_ctr,
8711 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8712 NL80211_REPLAY_CTR_LEN);
8713
8714 wdev_lock(wdev);
8715 if (!wdev->current_bss) {
8716 err = -ENOTCONN;
8717 goto out;
8718 }
8719
8720 if (!rdev->ops->set_rekey_data) {
8721 err = -EOPNOTSUPP;
8722 goto out;
8723 }
8724
8725 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8726 out:
8727 wdev_unlock(wdev);
8728 return err;
8729 }
8730
8731 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8732 struct genl_info *info)
8733 {
8734 struct net_device *dev = info->user_ptr[1];
8735 struct wireless_dev *wdev = dev->ieee80211_ptr;
8736
8737 if (wdev->iftype != NL80211_IFTYPE_AP &&
8738 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8739 return -EINVAL;
8740
8741 if (wdev->ap_unexpected_nlportid)
8742 return -EBUSY;
8743
8744 wdev->ap_unexpected_nlportid = info->snd_portid;
8745 return 0;
8746 }
8747
8748 static int nl80211_probe_client(struct sk_buff *skb,
8749 struct genl_info *info)
8750 {
8751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8752 struct net_device *dev = info->user_ptr[1];
8753 struct wireless_dev *wdev = dev->ieee80211_ptr;
8754 struct sk_buff *msg;
8755 void *hdr;
8756 const u8 *addr;
8757 u64 cookie;
8758 int err;
8759
8760 if (wdev->iftype != NL80211_IFTYPE_AP &&
8761 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8762 return -EOPNOTSUPP;
8763
8764 if (!info->attrs[NL80211_ATTR_MAC])
8765 return -EINVAL;
8766
8767 if (!rdev->ops->probe_client)
8768 return -EOPNOTSUPP;
8769
8770 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8771 if (!msg)
8772 return -ENOMEM;
8773
8774 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8775 NL80211_CMD_PROBE_CLIENT);
8776 if (!hdr) {
8777 err = -ENOBUFS;
8778 goto free_msg;
8779 }
8780
8781 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8782
8783 err = rdev_probe_client(rdev, dev, addr, &cookie);
8784 if (err)
8785 goto free_msg;
8786
8787 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8788 goto nla_put_failure;
8789
8790 genlmsg_end(msg, hdr);
8791
8792 return genlmsg_reply(msg, info);
8793
8794 nla_put_failure:
8795 err = -ENOBUFS;
8796 free_msg:
8797 nlmsg_free(msg);
8798 return err;
8799 }
8800
8801 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8802 {
8803 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8804 struct cfg80211_beacon_registration *reg, *nreg;
8805 int rv;
8806
8807 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8808 return -EOPNOTSUPP;
8809
8810 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8811 if (!nreg)
8812 return -ENOMEM;
8813
8814 /* First, check if already registered. */
8815 spin_lock_bh(&rdev->beacon_registrations_lock);
8816 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8817 if (reg->nlportid == info->snd_portid) {
8818 rv = -EALREADY;
8819 goto out_err;
8820 }
8821 }
8822 /* Add it to the list */
8823 nreg->nlportid = info->snd_portid;
8824 list_add(&nreg->list, &rdev->beacon_registrations);
8825
8826 spin_unlock_bh(&rdev->beacon_registrations_lock);
8827
8828 return 0;
8829 out_err:
8830 spin_unlock_bh(&rdev->beacon_registrations_lock);
8831 kfree(nreg);
8832 return rv;
8833 }
8834
8835 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8836 {
8837 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8838 struct wireless_dev *wdev = info->user_ptr[1];
8839 int err;
8840
8841 if (!rdev->ops->start_p2p_device)
8842 return -EOPNOTSUPP;
8843
8844 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8845 return -EOPNOTSUPP;
8846
8847 if (wdev->p2p_started)
8848 return 0;
8849
8850 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8851 if (err)
8852 return err;
8853
8854 err = rdev_start_p2p_device(rdev, wdev);
8855 if (err)
8856 return err;
8857
8858 wdev->p2p_started = true;
8859 rdev->opencount++;
8860
8861 return 0;
8862 }
8863
8864 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8865 {
8866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8867 struct wireless_dev *wdev = info->user_ptr[1];
8868
8869 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8870 return -EOPNOTSUPP;
8871
8872 if (!rdev->ops->stop_p2p_device)
8873 return -EOPNOTSUPP;
8874
8875 cfg80211_stop_p2p_device(rdev, wdev);
8876
8877 return 0;
8878 }
8879
8880 static int nl80211_get_protocol_features(struct sk_buff *skb,
8881 struct genl_info *info)
8882 {
8883 void *hdr;
8884 struct sk_buff *msg;
8885
8886 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8887 if (!msg)
8888 return -ENOMEM;
8889
8890 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8891 NL80211_CMD_GET_PROTOCOL_FEATURES);
8892 if (!hdr)
8893 goto nla_put_failure;
8894
8895 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8896 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8897 goto nla_put_failure;
8898
8899 genlmsg_end(msg, hdr);
8900 return genlmsg_reply(msg, info);
8901
8902 nla_put_failure:
8903 kfree_skb(msg);
8904 return -ENOBUFS;
8905 }
8906
8907 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8908 {
8909 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8910 struct cfg80211_update_ft_ies_params ft_params;
8911 struct net_device *dev = info->user_ptr[1];
8912
8913 if (!rdev->ops->update_ft_ies)
8914 return -EOPNOTSUPP;
8915
8916 if (!info->attrs[NL80211_ATTR_MDID] ||
8917 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8918 return -EINVAL;
8919
8920 memset(&ft_params, 0, sizeof(ft_params));
8921 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8922 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8923 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8924
8925 return rdev_update_ft_ies(rdev, dev, &ft_params);
8926 }
8927
8928 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8929 struct genl_info *info)
8930 {
8931 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8932 struct wireless_dev *wdev = info->user_ptr[1];
8933 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8934 u16 duration;
8935 int ret;
8936
8937 if (!rdev->ops->crit_proto_start)
8938 return -EOPNOTSUPP;
8939
8940 if (WARN_ON(!rdev->ops->crit_proto_stop))
8941 return -EINVAL;
8942
8943 if (rdev->crit_proto_nlportid)
8944 return -EBUSY;
8945
8946 /* determine protocol if provided */
8947 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8948 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8949
8950 if (proto >= NUM_NL80211_CRIT_PROTO)
8951 return -EINVAL;
8952
8953 /* timeout must be provided */
8954 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8955 return -EINVAL;
8956
8957 duration =
8958 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8959
8960 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8961 return -ERANGE;
8962
8963 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8964 if (!ret)
8965 rdev->crit_proto_nlportid = info->snd_portid;
8966
8967 return ret;
8968 }
8969
8970 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8971 struct genl_info *info)
8972 {
8973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8974 struct wireless_dev *wdev = info->user_ptr[1];
8975
8976 if (!rdev->ops->crit_proto_stop)
8977 return -EOPNOTSUPP;
8978
8979 if (rdev->crit_proto_nlportid) {
8980 rdev->crit_proto_nlportid = 0;
8981 rdev_crit_proto_stop(rdev, wdev);
8982 }
8983 return 0;
8984 }
8985
8986 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
8987 {
8988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8989 struct wireless_dev *wdev =
8990 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8991 int i, err;
8992 u32 vid, subcmd;
8993
8994 if (!rdev->wiphy.vendor_commands)
8995 return -EOPNOTSUPP;
8996
8997 if (IS_ERR(wdev)) {
8998 err = PTR_ERR(wdev);
8999 if (err != -EINVAL)
9000 return err;
9001 wdev = NULL;
9002 } else if (wdev->wiphy != &rdev->wiphy) {
9003 return -EINVAL;
9004 }
9005
9006 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9007 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9008 return -EINVAL;
9009
9010 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9011 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9012 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9013 const struct wiphy_vendor_command *vcmd;
9014 void *data = NULL;
9015 int len = 0;
9016
9017 vcmd = &rdev->wiphy.vendor_commands[i];
9018
9019 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9020 continue;
9021
9022 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9023 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9024 if (!wdev)
9025 return -EINVAL;
9026 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9027 !wdev->netdev)
9028 return -EINVAL;
9029
9030 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9031 if (wdev->netdev &&
9032 !netif_running(wdev->netdev))
9033 return -ENETDOWN;
9034 if (!wdev->netdev && !wdev->p2p_started)
9035 return -ENETDOWN;
9036 }
9037 } else {
9038 wdev = NULL;
9039 }
9040
9041 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9042 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9043 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9044 }
9045
9046 rdev->cur_cmd_info = info;
9047 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9048 data, len);
9049 rdev->cur_cmd_info = NULL;
9050 return err;
9051 }
9052
9053 return -EOPNOTSUPP;
9054 }
9055
9056 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9057 enum nl80211_commands cmd,
9058 enum nl80211_attrs attr,
9059 int approxlen)
9060 {
9061 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9062
9063 if (WARN_ON(!rdev->cur_cmd_info))
9064 return NULL;
9065
9066 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9067 rdev->cur_cmd_info->snd_portid,
9068 rdev->cur_cmd_info->snd_seq,
9069 cmd, attr, NULL, GFP_KERNEL);
9070 }
9071 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9072
9073 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9074 {
9075 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9076 void *hdr = ((void **)skb->cb)[1];
9077 struct nlattr *data = ((void **)skb->cb)[2];
9078
9079 if (WARN_ON(!rdev->cur_cmd_info)) {
9080 kfree_skb(skb);
9081 return -EINVAL;
9082 }
9083
9084 nla_nest_end(skb, data);
9085 genlmsg_end(skb, hdr);
9086 return genlmsg_reply(skb, rdev->cur_cmd_info);
9087 }
9088 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9089
9090
9091 static int nl80211_set_qos_map(struct sk_buff *skb,
9092 struct genl_info *info)
9093 {
9094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9095 struct cfg80211_qos_map *qos_map = NULL;
9096 struct net_device *dev = info->user_ptr[1];
9097 u8 *pos, len, num_des, des_len, des;
9098 int ret;
9099
9100 if (!rdev->ops->set_qos_map)
9101 return -EOPNOTSUPP;
9102
9103 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9104 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9105 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9106
9107 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9108 len > IEEE80211_QOS_MAP_LEN_MAX)
9109 return -EINVAL;
9110
9111 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9112 if (!qos_map)
9113 return -ENOMEM;
9114
9115 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9116 if (num_des) {
9117 des_len = num_des *
9118 sizeof(struct cfg80211_dscp_exception);
9119 memcpy(qos_map->dscp_exception, pos, des_len);
9120 qos_map->num_des = num_des;
9121 for (des = 0; des < num_des; des++) {
9122 if (qos_map->dscp_exception[des].up > 7) {
9123 kfree(qos_map);
9124 return -EINVAL;
9125 }
9126 }
9127 pos += des_len;
9128 }
9129 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9130 }
9131
9132 wdev_lock(dev->ieee80211_ptr);
9133 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9134 if (!ret)
9135 ret = rdev_set_qos_map(rdev, dev, qos_map);
9136 wdev_unlock(dev->ieee80211_ptr);
9137
9138 kfree(qos_map);
9139 return ret;
9140 }
9141
9142 #define NL80211_FLAG_NEED_WIPHY 0x01
9143 #define NL80211_FLAG_NEED_NETDEV 0x02
9144 #define NL80211_FLAG_NEED_RTNL 0x04
9145 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9146 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9147 NL80211_FLAG_CHECK_NETDEV_UP)
9148 #define NL80211_FLAG_NEED_WDEV 0x10
9149 /* If a netdev is associated, it must be UP, P2P must be started */
9150 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9151 NL80211_FLAG_CHECK_NETDEV_UP)
9152
9153 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9154 struct genl_info *info)
9155 {
9156 struct cfg80211_registered_device *rdev;
9157 struct wireless_dev *wdev;
9158 struct net_device *dev;
9159 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9160
9161 if (rtnl)
9162 rtnl_lock();
9163
9164 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9165 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9166 if (IS_ERR(rdev)) {
9167 if (rtnl)
9168 rtnl_unlock();
9169 return PTR_ERR(rdev);
9170 }
9171 info->user_ptr[0] = rdev;
9172 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9173 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9174 ASSERT_RTNL();
9175
9176 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9177 info->attrs);
9178 if (IS_ERR(wdev)) {
9179 if (rtnl)
9180 rtnl_unlock();
9181 return PTR_ERR(wdev);
9182 }
9183
9184 dev = wdev->netdev;
9185 rdev = wiphy_to_dev(wdev->wiphy);
9186
9187 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9188 if (!dev) {
9189 if (rtnl)
9190 rtnl_unlock();
9191 return -EINVAL;
9192 }
9193
9194 info->user_ptr[1] = dev;
9195 } else {
9196 info->user_ptr[1] = wdev;
9197 }
9198
9199 if (dev) {
9200 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9201 !netif_running(dev)) {
9202 if (rtnl)
9203 rtnl_unlock();
9204 return -ENETDOWN;
9205 }
9206
9207 dev_hold(dev);
9208 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9209 if (!wdev->p2p_started) {
9210 if (rtnl)
9211 rtnl_unlock();
9212 return -ENETDOWN;
9213 }
9214 }
9215
9216 info->user_ptr[0] = rdev;
9217 }
9218
9219 return 0;
9220 }
9221
9222 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9223 struct genl_info *info)
9224 {
9225 if (info->user_ptr[1]) {
9226 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9227 struct wireless_dev *wdev = info->user_ptr[1];
9228
9229 if (wdev->netdev)
9230 dev_put(wdev->netdev);
9231 } else {
9232 dev_put(info->user_ptr[1]);
9233 }
9234 }
9235 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9236 rtnl_unlock();
9237 }
9238
9239 static const struct genl_ops nl80211_ops[] = {
9240 {
9241 .cmd = NL80211_CMD_GET_WIPHY,
9242 .doit = nl80211_get_wiphy,
9243 .dumpit = nl80211_dump_wiphy,
9244 .done = nl80211_dump_wiphy_done,
9245 .policy = nl80211_policy,
9246 /* can be retrieved by unprivileged users */
9247 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9248 NL80211_FLAG_NEED_RTNL,
9249 },
9250 {
9251 .cmd = NL80211_CMD_SET_WIPHY,
9252 .doit = nl80211_set_wiphy,
9253 .policy = nl80211_policy,
9254 .flags = GENL_ADMIN_PERM,
9255 .internal_flags = NL80211_FLAG_NEED_RTNL,
9256 },
9257 {
9258 .cmd = NL80211_CMD_GET_INTERFACE,
9259 .doit = nl80211_get_interface,
9260 .dumpit = nl80211_dump_interface,
9261 .policy = nl80211_policy,
9262 /* can be retrieved by unprivileged users */
9263 .internal_flags = NL80211_FLAG_NEED_WDEV |
9264 NL80211_FLAG_NEED_RTNL,
9265 },
9266 {
9267 .cmd = NL80211_CMD_SET_INTERFACE,
9268 .doit = nl80211_set_interface,
9269 .policy = nl80211_policy,
9270 .flags = GENL_ADMIN_PERM,
9271 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9272 NL80211_FLAG_NEED_RTNL,
9273 },
9274 {
9275 .cmd = NL80211_CMD_NEW_INTERFACE,
9276 .doit = nl80211_new_interface,
9277 .policy = nl80211_policy,
9278 .flags = GENL_ADMIN_PERM,
9279 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9280 NL80211_FLAG_NEED_RTNL,
9281 },
9282 {
9283 .cmd = NL80211_CMD_DEL_INTERFACE,
9284 .doit = nl80211_del_interface,
9285 .policy = nl80211_policy,
9286 .flags = GENL_ADMIN_PERM,
9287 .internal_flags = NL80211_FLAG_NEED_WDEV |
9288 NL80211_FLAG_NEED_RTNL,
9289 },
9290 {
9291 .cmd = NL80211_CMD_GET_KEY,
9292 .doit = nl80211_get_key,
9293 .policy = nl80211_policy,
9294 .flags = GENL_ADMIN_PERM,
9295 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9296 NL80211_FLAG_NEED_RTNL,
9297 },
9298 {
9299 .cmd = NL80211_CMD_SET_KEY,
9300 .doit = nl80211_set_key,
9301 .policy = nl80211_policy,
9302 .flags = GENL_ADMIN_PERM,
9303 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9304 NL80211_FLAG_NEED_RTNL,
9305 },
9306 {
9307 .cmd = NL80211_CMD_NEW_KEY,
9308 .doit = nl80211_new_key,
9309 .policy = nl80211_policy,
9310 .flags = GENL_ADMIN_PERM,
9311 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9312 NL80211_FLAG_NEED_RTNL,
9313 },
9314 {
9315 .cmd = NL80211_CMD_DEL_KEY,
9316 .doit = nl80211_del_key,
9317 .policy = nl80211_policy,
9318 .flags = GENL_ADMIN_PERM,
9319 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9320 NL80211_FLAG_NEED_RTNL,
9321 },
9322 {
9323 .cmd = NL80211_CMD_SET_BEACON,
9324 .policy = nl80211_policy,
9325 .flags = GENL_ADMIN_PERM,
9326 .doit = nl80211_set_beacon,
9327 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9328 NL80211_FLAG_NEED_RTNL,
9329 },
9330 {
9331 .cmd = NL80211_CMD_START_AP,
9332 .policy = nl80211_policy,
9333 .flags = GENL_ADMIN_PERM,
9334 .doit = nl80211_start_ap,
9335 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9336 NL80211_FLAG_NEED_RTNL,
9337 },
9338 {
9339 .cmd = NL80211_CMD_STOP_AP,
9340 .policy = nl80211_policy,
9341 .flags = GENL_ADMIN_PERM,
9342 .doit = nl80211_stop_ap,
9343 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9344 NL80211_FLAG_NEED_RTNL,
9345 },
9346 {
9347 .cmd = NL80211_CMD_GET_STATION,
9348 .doit = nl80211_get_station,
9349 .dumpit = nl80211_dump_station,
9350 .policy = nl80211_policy,
9351 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9352 NL80211_FLAG_NEED_RTNL,
9353 },
9354 {
9355 .cmd = NL80211_CMD_SET_STATION,
9356 .doit = nl80211_set_station,
9357 .policy = nl80211_policy,
9358 .flags = GENL_ADMIN_PERM,
9359 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9360 NL80211_FLAG_NEED_RTNL,
9361 },
9362 {
9363 .cmd = NL80211_CMD_NEW_STATION,
9364 .doit = nl80211_new_station,
9365 .policy = nl80211_policy,
9366 .flags = GENL_ADMIN_PERM,
9367 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9368 NL80211_FLAG_NEED_RTNL,
9369 },
9370 {
9371 .cmd = NL80211_CMD_DEL_STATION,
9372 .doit = nl80211_del_station,
9373 .policy = nl80211_policy,
9374 .flags = GENL_ADMIN_PERM,
9375 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9376 NL80211_FLAG_NEED_RTNL,
9377 },
9378 {
9379 .cmd = NL80211_CMD_GET_MPATH,
9380 .doit = nl80211_get_mpath,
9381 .dumpit = nl80211_dump_mpath,
9382 .policy = nl80211_policy,
9383 .flags = GENL_ADMIN_PERM,
9384 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9385 NL80211_FLAG_NEED_RTNL,
9386 },
9387 {
9388 .cmd = NL80211_CMD_SET_MPATH,
9389 .doit = nl80211_set_mpath,
9390 .policy = nl80211_policy,
9391 .flags = GENL_ADMIN_PERM,
9392 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9393 NL80211_FLAG_NEED_RTNL,
9394 },
9395 {
9396 .cmd = NL80211_CMD_NEW_MPATH,
9397 .doit = nl80211_new_mpath,
9398 .policy = nl80211_policy,
9399 .flags = GENL_ADMIN_PERM,
9400 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9401 NL80211_FLAG_NEED_RTNL,
9402 },
9403 {
9404 .cmd = NL80211_CMD_DEL_MPATH,
9405 .doit = nl80211_del_mpath,
9406 .policy = nl80211_policy,
9407 .flags = GENL_ADMIN_PERM,
9408 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9409 NL80211_FLAG_NEED_RTNL,
9410 },
9411 {
9412 .cmd = NL80211_CMD_SET_BSS,
9413 .doit = nl80211_set_bss,
9414 .policy = nl80211_policy,
9415 .flags = GENL_ADMIN_PERM,
9416 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9417 NL80211_FLAG_NEED_RTNL,
9418 },
9419 {
9420 .cmd = NL80211_CMD_GET_REG,
9421 .doit = nl80211_get_reg,
9422 .policy = nl80211_policy,
9423 .internal_flags = NL80211_FLAG_NEED_RTNL,
9424 /* can be retrieved by unprivileged users */
9425 },
9426 {
9427 .cmd = NL80211_CMD_SET_REG,
9428 .doit = nl80211_set_reg,
9429 .policy = nl80211_policy,
9430 .flags = GENL_ADMIN_PERM,
9431 .internal_flags = NL80211_FLAG_NEED_RTNL,
9432 },
9433 {
9434 .cmd = NL80211_CMD_REQ_SET_REG,
9435 .doit = nl80211_req_set_reg,
9436 .policy = nl80211_policy,
9437 .flags = GENL_ADMIN_PERM,
9438 },
9439 {
9440 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9441 .doit = nl80211_get_mesh_config,
9442 .policy = nl80211_policy,
9443 /* can be retrieved by unprivileged users */
9444 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9445 NL80211_FLAG_NEED_RTNL,
9446 },
9447 {
9448 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9449 .doit = nl80211_update_mesh_config,
9450 .policy = nl80211_policy,
9451 .flags = GENL_ADMIN_PERM,
9452 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9453 NL80211_FLAG_NEED_RTNL,
9454 },
9455 {
9456 .cmd = NL80211_CMD_TRIGGER_SCAN,
9457 .doit = nl80211_trigger_scan,
9458 .policy = nl80211_policy,
9459 .flags = GENL_ADMIN_PERM,
9460 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9461 NL80211_FLAG_NEED_RTNL,
9462 },
9463 {
9464 .cmd = NL80211_CMD_GET_SCAN,
9465 .policy = nl80211_policy,
9466 .dumpit = nl80211_dump_scan,
9467 },
9468 {
9469 .cmd = NL80211_CMD_START_SCHED_SCAN,
9470 .doit = nl80211_start_sched_scan,
9471 .policy = nl80211_policy,
9472 .flags = GENL_ADMIN_PERM,
9473 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9474 NL80211_FLAG_NEED_RTNL,
9475 },
9476 {
9477 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9478 .doit = nl80211_stop_sched_scan,
9479 .policy = nl80211_policy,
9480 .flags = GENL_ADMIN_PERM,
9481 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9482 NL80211_FLAG_NEED_RTNL,
9483 },
9484 {
9485 .cmd = NL80211_CMD_AUTHENTICATE,
9486 .doit = nl80211_authenticate,
9487 .policy = nl80211_policy,
9488 .flags = GENL_ADMIN_PERM,
9489 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9490 NL80211_FLAG_NEED_RTNL,
9491 },
9492 {
9493 .cmd = NL80211_CMD_ASSOCIATE,
9494 .doit = nl80211_associate,
9495 .policy = nl80211_policy,
9496 .flags = GENL_ADMIN_PERM,
9497 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9498 NL80211_FLAG_NEED_RTNL,
9499 },
9500 {
9501 .cmd = NL80211_CMD_DEAUTHENTICATE,
9502 .doit = nl80211_deauthenticate,
9503 .policy = nl80211_policy,
9504 .flags = GENL_ADMIN_PERM,
9505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9506 NL80211_FLAG_NEED_RTNL,
9507 },
9508 {
9509 .cmd = NL80211_CMD_DISASSOCIATE,
9510 .doit = nl80211_disassociate,
9511 .policy = nl80211_policy,
9512 .flags = GENL_ADMIN_PERM,
9513 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9514 NL80211_FLAG_NEED_RTNL,
9515 },
9516 {
9517 .cmd = NL80211_CMD_JOIN_IBSS,
9518 .doit = nl80211_join_ibss,
9519 .policy = nl80211_policy,
9520 .flags = GENL_ADMIN_PERM,
9521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9522 NL80211_FLAG_NEED_RTNL,
9523 },
9524 {
9525 .cmd = NL80211_CMD_LEAVE_IBSS,
9526 .doit = nl80211_leave_ibss,
9527 .policy = nl80211_policy,
9528 .flags = GENL_ADMIN_PERM,
9529 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9530 NL80211_FLAG_NEED_RTNL,
9531 },
9532 #ifdef CONFIG_NL80211_TESTMODE
9533 {
9534 .cmd = NL80211_CMD_TESTMODE,
9535 .doit = nl80211_testmode_do,
9536 .dumpit = nl80211_testmode_dump,
9537 .policy = nl80211_policy,
9538 .flags = GENL_ADMIN_PERM,
9539 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9540 NL80211_FLAG_NEED_RTNL,
9541 },
9542 #endif
9543 {
9544 .cmd = NL80211_CMD_CONNECT,
9545 .doit = nl80211_connect,
9546 .policy = nl80211_policy,
9547 .flags = GENL_ADMIN_PERM,
9548 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9549 NL80211_FLAG_NEED_RTNL,
9550 },
9551 {
9552 .cmd = NL80211_CMD_DISCONNECT,
9553 .doit = nl80211_disconnect,
9554 .policy = nl80211_policy,
9555 .flags = GENL_ADMIN_PERM,
9556 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9557 NL80211_FLAG_NEED_RTNL,
9558 },
9559 {
9560 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9561 .doit = nl80211_wiphy_netns,
9562 .policy = nl80211_policy,
9563 .flags = GENL_ADMIN_PERM,
9564 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9565 NL80211_FLAG_NEED_RTNL,
9566 },
9567 {
9568 .cmd = NL80211_CMD_GET_SURVEY,
9569 .policy = nl80211_policy,
9570 .dumpit = nl80211_dump_survey,
9571 },
9572 {
9573 .cmd = NL80211_CMD_SET_PMKSA,
9574 .doit = nl80211_setdel_pmksa,
9575 .policy = nl80211_policy,
9576 .flags = GENL_ADMIN_PERM,
9577 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9578 NL80211_FLAG_NEED_RTNL,
9579 },
9580 {
9581 .cmd = NL80211_CMD_DEL_PMKSA,
9582 .doit = nl80211_setdel_pmksa,
9583 .policy = nl80211_policy,
9584 .flags = GENL_ADMIN_PERM,
9585 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9586 NL80211_FLAG_NEED_RTNL,
9587 },
9588 {
9589 .cmd = NL80211_CMD_FLUSH_PMKSA,
9590 .doit = nl80211_flush_pmksa,
9591 .policy = nl80211_policy,
9592 .flags = GENL_ADMIN_PERM,
9593 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9594 NL80211_FLAG_NEED_RTNL,
9595 },
9596 {
9597 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9598 .doit = nl80211_remain_on_channel,
9599 .policy = nl80211_policy,
9600 .flags = GENL_ADMIN_PERM,
9601 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9602 NL80211_FLAG_NEED_RTNL,
9603 },
9604 {
9605 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9606 .doit = nl80211_cancel_remain_on_channel,
9607 .policy = nl80211_policy,
9608 .flags = GENL_ADMIN_PERM,
9609 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9610 NL80211_FLAG_NEED_RTNL,
9611 },
9612 {
9613 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9614 .doit = nl80211_set_tx_bitrate_mask,
9615 .policy = nl80211_policy,
9616 .flags = GENL_ADMIN_PERM,
9617 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9618 NL80211_FLAG_NEED_RTNL,
9619 },
9620 {
9621 .cmd = NL80211_CMD_REGISTER_FRAME,
9622 .doit = nl80211_register_mgmt,
9623 .policy = nl80211_policy,
9624 .flags = GENL_ADMIN_PERM,
9625 .internal_flags = NL80211_FLAG_NEED_WDEV |
9626 NL80211_FLAG_NEED_RTNL,
9627 },
9628 {
9629 .cmd = NL80211_CMD_FRAME,
9630 .doit = nl80211_tx_mgmt,
9631 .policy = nl80211_policy,
9632 .flags = GENL_ADMIN_PERM,
9633 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9634 NL80211_FLAG_NEED_RTNL,
9635 },
9636 {
9637 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9638 .doit = nl80211_tx_mgmt_cancel_wait,
9639 .policy = nl80211_policy,
9640 .flags = GENL_ADMIN_PERM,
9641 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9642 NL80211_FLAG_NEED_RTNL,
9643 },
9644 {
9645 .cmd = NL80211_CMD_SET_POWER_SAVE,
9646 .doit = nl80211_set_power_save,
9647 .policy = nl80211_policy,
9648 .flags = GENL_ADMIN_PERM,
9649 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9650 NL80211_FLAG_NEED_RTNL,
9651 },
9652 {
9653 .cmd = NL80211_CMD_GET_POWER_SAVE,
9654 .doit = nl80211_get_power_save,
9655 .policy = nl80211_policy,
9656 /* can be retrieved by unprivileged users */
9657 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9658 NL80211_FLAG_NEED_RTNL,
9659 },
9660 {
9661 .cmd = NL80211_CMD_SET_CQM,
9662 .doit = nl80211_set_cqm,
9663 .policy = nl80211_policy,
9664 .flags = GENL_ADMIN_PERM,
9665 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9666 NL80211_FLAG_NEED_RTNL,
9667 },
9668 {
9669 .cmd = NL80211_CMD_SET_CHANNEL,
9670 .doit = nl80211_set_channel,
9671 .policy = nl80211_policy,
9672 .flags = GENL_ADMIN_PERM,
9673 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9674 NL80211_FLAG_NEED_RTNL,
9675 },
9676 {
9677 .cmd = NL80211_CMD_SET_WDS_PEER,
9678 .doit = nl80211_set_wds_peer,
9679 .policy = nl80211_policy,
9680 .flags = GENL_ADMIN_PERM,
9681 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9682 NL80211_FLAG_NEED_RTNL,
9683 },
9684 {
9685 .cmd = NL80211_CMD_JOIN_MESH,
9686 .doit = nl80211_join_mesh,
9687 .policy = nl80211_policy,
9688 .flags = GENL_ADMIN_PERM,
9689 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9690 NL80211_FLAG_NEED_RTNL,
9691 },
9692 {
9693 .cmd = NL80211_CMD_LEAVE_MESH,
9694 .doit = nl80211_leave_mesh,
9695 .policy = nl80211_policy,
9696 .flags = GENL_ADMIN_PERM,
9697 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9698 NL80211_FLAG_NEED_RTNL,
9699 },
9700 #ifdef CONFIG_PM
9701 {
9702 .cmd = NL80211_CMD_GET_WOWLAN,
9703 .doit = nl80211_get_wowlan,
9704 .policy = nl80211_policy,
9705 /* can be retrieved by unprivileged users */
9706 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9707 NL80211_FLAG_NEED_RTNL,
9708 },
9709 {
9710 .cmd = NL80211_CMD_SET_WOWLAN,
9711 .doit = nl80211_set_wowlan,
9712 .policy = nl80211_policy,
9713 .flags = GENL_ADMIN_PERM,
9714 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9715 NL80211_FLAG_NEED_RTNL,
9716 },
9717 #endif
9718 {
9719 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9720 .doit = nl80211_set_rekey_data,
9721 .policy = nl80211_policy,
9722 .flags = GENL_ADMIN_PERM,
9723 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9724 NL80211_FLAG_NEED_RTNL,
9725 },
9726 {
9727 .cmd = NL80211_CMD_TDLS_MGMT,
9728 .doit = nl80211_tdls_mgmt,
9729 .policy = nl80211_policy,
9730 .flags = GENL_ADMIN_PERM,
9731 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9732 NL80211_FLAG_NEED_RTNL,
9733 },
9734 {
9735 .cmd = NL80211_CMD_TDLS_OPER,
9736 .doit = nl80211_tdls_oper,
9737 .policy = nl80211_policy,
9738 .flags = GENL_ADMIN_PERM,
9739 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9740 NL80211_FLAG_NEED_RTNL,
9741 },
9742 {
9743 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9744 .doit = nl80211_register_unexpected_frame,
9745 .policy = nl80211_policy,
9746 .flags = GENL_ADMIN_PERM,
9747 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9748 NL80211_FLAG_NEED_RTNL,
9749 },
9750 {
9751 .cmd = NL80211_CMD_PROBE_CLIENT,
9752 .doit = nl80211_probe_client,
9753 .policy = nl80211_policy,
9754 .flags = GENL_ADMIN_PERM,
9755 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9756 NL80211_FLAG_NEED_RTNL,
9757 },
9758 {
9759 .cmd = NL80211_CMD_REGISTER_BEACONS,
9760 .doit = nl80211_register_beacons,
9761 .policy = nl80211_policy,
9762 .flags = GENL_ADMIN_PERM,
9763 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9764 NL80211_FLAG_NEED_RTNL,
9765 },
9766 {
9767 .cmd = NL80211_CMD_SET_NOACK_MAP,
9768 .doit = nl80211_set_noack_map,
9769 .policy = nl80211_policy,
9770 .flags = GENL_ADMIN_PERM,
9771 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9772 NL80211_FLAG_NEED_RTNL,
9773 },
9774 {
9775 .cmd = NL80211_CMD_START_P2P_DEVICE,
9776 .doit = nl80211_start_p2p_device,
9777 .policy = nl80211_policy,
9778 .flags = GENL_ADMIN_PERM,
9779 .internal_flags = NL80211_FLAG_NEED_WDEV |
9780 NL80211_FLAG_NEED_RTNL,
9781 },
9782 {
9783 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9784 .doit = nl80211_stop_p2p_device,
9785 .policy = nl80211_policy,
9786 .flags = GENL_ADMIN_PERM,
9787 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9788 NL80211_FLAG_NEED_RTNL,
9789 },
9790 {
9791 .cmd = NL80211_CMD_SET_MCAST_RATE,
9792 .doit = nl80211_set_mcast_rate,
9793 .policy = nl80211_policy,
9794 .flags = GENL_ADMIN_PERM,
9795 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9796 NL80211_FLAG_NEED_RTNL,
9797 },
9798 {
9799 .cmd = NL80211_CMD_SET_MAC_ACL,
9800 .doit = nl80211_set_mac_acl,
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_RADAR_DETECT,
9808 .doit = nl80211_start_radar_detection,
9809 .policy = nl80211_policy,
9810 .flags = GENL_ADMIN_PERM,
9811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9812 NL80211_FLAG_NEED_RTNL,
9813 },
9814 {
9815 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9816 .doit = nl80211_get_protocol_features,
9817 .policy = nl80211_policy,
9818 },
9819 {
9820 .cmd = NL80211_CMD_UPDATE_FT_IES,
9821 .doit = nl80211_update_ft_ies,
9822 .policy = nl80211_policy,
9823 .flags = GENL_ADMIN_PERM,
9824 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9825 NL80211_FLAG_NEED_RTNL,
9826 },
9827 {
9828 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9829 .doit = nl80211_crit_protocol_start,
9830 .policy = nl80211_policy,
9831 .flags = GENL_ADMIN_PERM,
9832 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9833 NL80211_FLAG_NEED_RTNL,
9834 },
9835 {
9836 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9837 .doit = nl80211_crit_protocol_stop,
9838 .policy = nl80211_policy,
9839 .flags = GENL_ADMIN_PERM,
9840 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9841 NL80211_FLAG_NEED_RTNL,
9842 },
9843 {
9844 .cmd = NL80211_CMD_GET_COALESCE,
9845 .doit = nl80211_get_coalesce,
9846 .policy = nl80211_policy,
9847 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9848 NL80211_FLAG_NEED_RTNL,
9849 },
9850 {
9851 .cmd = NL80211_CMD_SET_COALESCE,
9852 .doit = nl80211_set_coalesce,
9853 .policy = nl80211_policy,
9854 .flags = GENL_ADMIN_PERM,
9855 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9856 NL80211_FLAG_NEED_RTNL,
9857 },
9858 {
9859 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9860 .doit = nl80211_channel_switch,
9861 .policy = nl80211_policy,
9862 .flags = GENL_ADMIN_PERM,
9863 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9864 NL80211_FLAG_NEED_RTNL,
9865 },
9866 {
9867 .cmd = NL80211_CMD_VENDOR,
9868 .doit = nl80211_vendor_cmd,
9869 .policy = nl80211_policy,
9870 .flags = GENL_ADMIN_PERM,
9871 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9872 NL80211_FLAG_NEED_RTNL,
9873 },
9874 {
9875 .cmd = NL80211_CMD_SET_QOS_MAP,
9876 .doit = nl80211_set_qos_map,
9877 .policy = nl80211_policy,
9878 .flags = GENL_ADMIN_PERM,
9879 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9880 NL80211_FLAG_NEED_RTNL,
9881 },
9882 };
9883
9884 /* notification functions */
9885
9886 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9887 {
9888 struct sk_buff *msg;
9889 struct nl80211_dump_wiphy_state state = {};
9890
9891 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9892 if (!msg)
9893 return;
9894
9895 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9896 nlmsg_free(msg);
9897 return;
9898 }
9899
9900 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9901 NL80211_MCGRP_CONFIG, GFP_KERNEL);
9902 }
9903
9904 static int nl80211_add_scan_req(struct sk_buff *msg,
9905 struct cfg80211_registered_device *rdev)
9906 {
9907 struct cfg80211_scan_request *req = rdev->scan_req;
9908 struct nlattr *nest;
9909 int i;
9910
9911 if (WARN_ON(!req))
9912 return 0;
9913
9914 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9915 if (!nest)
9916 goto nla_put_failure;
9917 for (i = 0; i < req->n_ssids; i++) {
9918 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9919 goto nla_put_failure;
9920 }
9921 nla_nest_end(msg, nest);
9922
9923 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9924 if (!nest)
9925 goto nla_put_failure;
9926 for (i = 0; i < req->n_channels; i++) {
9927 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9928 goto nla_put_failure;
9929 }
9930 nla_nest_end(msg, nest);
9931
9932 if (req->ie &&
9933 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9934 goto nla_put_failure;
9935
9936 if (req->flags &&
9937 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
9938 goto nla_put_failure;
9939
9940 return 0;
9941 nla_put_failure:
9942 return -ENOBUFS;
9943 }
9944
9945 static int nl80211_send_scan_msg(struct sk_buff *msg,
9946 struct cfg80211_registered_device *rdev,
9947 struct wireless_dev *wdev,
9948 u32 portid, u32 seq, int flags,
9949 u32 cmd)
9950 {
9951 void *hdr;
9952
9953 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9954 if (!hdr)
9955 return -1;
9956
9957 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9958 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9959 wdev->netdev->ifindex)) ||
9960 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9961 goto nla_put_failure;
9962
9963 /* ignore errors and send incomplete event anyway */
9964 nl80211_add_scan_req(msg, rdev);
9965
9966 return genlmsg_end(msg, hdr);
9967
9968 nla_put_failure:
9969 genlmsg_cancel(msg, hdr);
9970 return -EMSGSIZE;
9971 }
9972
9973 static int
9974 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9975 struct cfg80211_registered_device *rdev,
9976 struct net_device *netdev,
9977 u32 portid, u32 seq, int flags, u32 cmd)
9978 {
9979 void *hdr;
9980
9981 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9982 if (!hdr)
9983 return -1;
9984
9985 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9986 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9987 goto nla_put_failure;
9988
9989 return genlmsg_end(msg, hdr);
9990
9991 nla_put_failure:
9992 genlmsg_cancel(msg, hdr);
9993 return -EMSGSIZE;
9994 }
9995
9996 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9997 struct wireless_dev *wdev)
9998 {
9999 struct sk_buff *msg;
10000
10001 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10002 if (!msg)
10003 return;
10004
10005 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10006 NL80211_CMD_TRIGGER_SCAN) < 0) {
10007 nlmsg_free(msg);
10008 return;
10009 }
10010
10011 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10012 NL80211_MCGRP_SCAN, GFP_KERNEL);
10013 }
10014
10015 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10016 struct wireless_dev *wdev, bool aborted)
10017 {
10018 struct sk_buff *msg;
10019
10020 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10021 if (!msg)
10022 return NULL;
10023
10024 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10025 aborted ? NL80211_CMD_SCAN_ABORTED :
10026 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10027 nlmsg_free(msg);
10028 return NULL;
10029 }
10030
10031 return msg;
10032 }
10033
10034 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10035 struct sk_buff *msg)
10036 {
10037 if (!msg)
10038 return;
10039
10040 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10041 NL80211_MCGRP_SCAN, GFP_KERNEL);
10042 }
10043
10044 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10045 struct net_device *netdev)
10046 {
10047 struct sk_buff *msg;
10048
10049 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10050 if (!msg)
10051 return;
10052
10053 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10054 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10055 nlmsg_free(msg);
10056 return;
10057 }
10058
10059 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10060 NL80211_MCGRP_SCAN, GFP_KERNEL);
10061 }
10062
10063 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10064 struct net_device *netdev, u32 cmd)
10065 {
10066 struct sk_buff *msg;
10067
10068 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10069 if (!msg)
10070 return;
10071
10072 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10073 nlmsg_free(msg);
10074 return;
10075 }
10076
10077 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10078 NL80211_MCGRP_SCAN, GFP_KERNEL);
10079 }
10080
10081 /*
10082 * This can happen on global regulatory changes or device specific settings
10083 * based on custom world regulatory domains.
10084 */
10085 void nl80211_send_reg_change_event(struct regulatory_request *request)
10086 {
10087 struct sk_buff *msg;
10088 void *hdr;
10089
10090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10091 if (!msg)
10092 return;
10093
10094 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10095 if (!hdr) {
10096 nlmsg_free(msg);
10097 return;
10098 }
10099
10100 /* Userspace can always count this one always being set */
10101 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10102 goto nla_put_failure;
10103
10104 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10105 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10106 NL80211_REGDOM_TYPE_WORLD))
10107 goto nla_put_failure;
10108 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10109 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10110 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10111 goto nla_put_failure;
10112 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10113 request->intersect) {
10114 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10115 NL80211_REGDOM_TYPE_INTERSECTION))
10116 goto nla_put_failure;
10117 } else {
10118 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10119 NL80211_REGDOM_TYPE_COUNTRY) ||
10120 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10121 request->alpha2))
10122 goto nla_put_failure;
10123 }
10124
10125 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10126 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10127 goto nla_put_failure;
10128
10129 genlmsg_end(msg, hdr);
10130
10131 rcu_read_lock();
10132 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10133 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10134 rcu_read_unlock();
10135
10136 return;
10137
10138 nla_put_failure:
10139 genlmsg_cancel(msg, hdr);
10140 nlmsg_free(msg);
10141 }
10142
10143 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10144 struct net_device *netdev,
10145 const u8 *buf, size_t len,
10146 enum nl80211_commands cmd, gfp_t gfp)
10147 {
10148 struct sk_buff *msg;
10149 void *hdr;
10150
10151 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10152 if (!msg)
10153 return;
10154
10155 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10156 if (!hdr) {
10157 nlmsg_free(msg);
10158 return;
10159 }
10160
10161 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10162 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10163 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10164 goto nla_put_failure;
10165
10166 genlmsg_end(msg, hdr);
10167
10168 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10169 NL80211_MCGRP_MLME, gfp);
10170 return;
10171
10172 nla_put_failure:
10173 genlmsg_cancel(msg, hdr);
10174 nlmsg_free(msg);
10175 }
10176
10177 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10178 struct net_device *netdev, const u8 *buf,
10179 size_t len, gfp_t gfp)
10180 {
10181 nl80211_send_mlme_event(rdev, netdev, buf, len,
10182 NL80211_CMD_AUTHENTICATE, gfp);
10183 }
10184
10185 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10186 struct net_device *netdev, const u8 *buf,
10187 size_t len, gfp_t gfp)
10188 {
10189 nl80211_send_mlme_event(rdev, netdev, buf, len,
10190 NL80211_CMD_ASSOCIATE, gfp);
10191 }
10192
10193 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10194 struct net_device *netdev, const u8 *buf,
10195 size_t len, gfp_t gfp)
10196 {
10197 nl80211_send_mlme_event(rdev, netdev, buf, len,
10198 NL80211_CMD_DEAUTHENTICATE, gfp);
10199 }
10200
10201 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10202 struct net_device *netdev, const u8 *buf,
10203 size_t len, gfp_t gfp)
10204 {
10205 nl80211_send_mlme_event(rdev, netdev, buf, len,
10206 NL80211_CMD_DISASSOCIATE, gfp);
10207 }
10208
10209 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10210 size_t len)
10211 {
10212 struct wireless_dev *wdev = dev->ieee80211_ptr;
10213 struct wiphy *wiphy = wdev->wiphy;
10214 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10215 const struct ieee80211_mgmt *mgmt = (void *)buf;
10216 u32 cmd;
10217
10218 if (WARN_ON(len < 2))
10219 return;
10220
10221 if (ieee80211_is_deauth(mgmt->frame_control))
10222 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10223 else
10224 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10225
10226 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10227 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
10228 }
10229 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10230
10231 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10232 struct net_device *netdev, int cmd,
10233 const u8 *addr, gfp_t gfp)
10234 {
10235 struct sk_buff *msg;
10236 void *hdr;
10237
10238 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10239 if (!msg)
10240 return;
10241
10242 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10243 if (!hdr) {
10244 nlmsg_free(msg);
10245 return;
10246 }
10247
10248 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10249 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10250 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10251 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10252 goto nla_put_failure;
10253
10254 genlmsg_end(msg, hdr);
10255
10256 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10257 NL80211_MCGRP_MLME, gfp);
10258 return;
10259
10260 nla_put_failure:
10261 genlmsg_cancel(msg, hdr);
10262 nlmsg_free(msg);
10263 }
10264
10265 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10266 struct net_device *netdev, const u8 *addr,
10267 gfp_t gfp)
10268 {
10269 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10270 addr, gfp);
10271 }
10272
10273 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10274 struct net_device *netdev, const u8 *addr,
10275 gfp_t gfp)
10276 {
10277 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10278 addr, gfp);
10279 }
10280
10281 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10282 struct net_device *netdev, const u8 *bssid,
10283 const u8 *req_ie, size_t req_ie_len,
10284 const u8 *resp_ie, size_t resp_ie_len,
10285 u16 status, gfp_t gfp)
10286 {
10287 struct sk_buff *msg;
10288 void *hdr;
10289
10290 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10291 if (!msg)
10292 return;
10293
10294 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10295 if (!hdr) {
10296 nlmsg_free(msg);
10297 return;
10298 }
10299
10300 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10301 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10302 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10303 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10304 (req_ie &&
10305 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10306 (resp_ie &&
10307 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10308 goto nla_put_failure;
10309
10310 genlmsg_end(msg, hdr);
10311
10312 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10313 NL80211_MCGRP_MLME, gfp);
10314 return;
10315
10316 nla_put_failure:
10317 genlmsg_cancel(msg, hdr);
10318 nlmsg_free(msg);
10319
10320 }
10321
10322 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10323 struct net_device *netdev, const u8 *bssid,
10324 const u8 *req_ie, size_t req_ie_len,
10325 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10326 {
10327 struct sk_buff *msg;
10328 void *hdr;
10329
10330 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10331 if (!msg)
10332 return;
10333
10334 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10335 if (!hdr) {
10336 nlmsg_free(msg);
10337 return;
10338 }
10339
10340 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10341 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10342 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10343 (req_ie &&
10344 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10345 (resp_ie &&
10346 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10347 goto nla_put_failure;
10348
10349 genlmsg_end(msg, hdr);
10350
10351 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10352 NL80211_MCGRP_MLME, gfp);
10353 return;
10354
10355 nla_put_failure:
10356 genlmsg_cancel(msg, hdr);
10357 nlmsg_free(msg);
10358
10359 }
10360
10361 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10362 struct net_device *netdev, u16 reason,
10363 const u8 *ie, size_t ie_len, bool from_ap)
10364 {
10365 struct sk_buff *msg;
10366 void *hdr;
10367
10368 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10369 if (!msg)
10370 return;
10371
10372 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10373 if (!hdr) {
10374 nlmsg_free(msg);
10375 return;
10376 }
10377
10378 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10379 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10380 (from_ap && reason &&
10381 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10382 (from_ap &&
10383 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10384 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10385 goto nla_put_failure;
10386
10387 genlmsg_end(msg, hdr);
10388
10389 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10390 NL80211_MCGRP_MLME, GFP_KERNEL);
10391 return;
10392
10393 nla_put_failure:
10394 genlmsg_cancel(msg, hdr);
10395 nlmsg_free(msg);
10396
10397 }
10398
10399 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10400 struct net_device *netdev, const u8 *bssid,
10401 gfp_t gfp)
10402 {
10403 struct sk_buff *msg;
10404 void *hdr;
10405
10406 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10407 if (!msg)
10408 return;
10409
10410 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10411 if (!hdr) {
10412 nlmsg_free(msg);
10413 return;
10414 }
10415
10416 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10417 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10418 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10419 goto nla_put_failure;
10420
10421 genlmsg_end(msg, hdr);
10422
10423 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10424 NL80211_MCGRP_MLME, gfp);
10425 return;
10426
10427 nla_put_failure:
10428 genlmsg_cancel(msg, hdr);
10429 nlmsg_free(msg);
10430 }
10431
10432 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10433 const u8* ie, u8 ie_len, gfp_t gfp)
10434 {
10435 struct wireless_dev *wdev = dev->ieee80211_ptr;
10436 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10437 struct sk_buff *msg;
10438 void *hdr;
10439
10440 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10441 return;
10442
10443 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10444
10445 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10446 if (!msg)
10447 return;
10448
10449 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10450 if (!hdr) {
10451 nlmsg_free(msg);
10452 return;
10453 }
10454
10455 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10456 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10457 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10458 (ie_len && ie &&
10459 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10460 goto nla_put_failure;
10461
10462 genlmsg_end(msg, hdr);
10463
10464 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10465 NL80211_MCGRP_MLME, gfp);
10466 return;
10467
10468 nla_put_failure:
10469 genlmsg_cancel(msg, hdr);
10470 nlmsg_free(msg);
10471 }
10472 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10473
10474 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10475 struct net_device *netdev, const u8 *addr,
10476 enum nl80211_key_type key_type, int key_id,
10477 const u8 *tsc, gfp_t gfp)
10478 {
10479 struct sk_buff *msg;
10480 void *hdr;
10481
10482 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10483 if (!msg)
10484 return;
10485
10486 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10487 if (!hdr) {
10488 nlmsg_free(msg);
10489 return;
10490 }
10491
10492 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10493 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10494 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10495 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10496 (key_id != -1 &&
10497 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10498 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10499 goto nla_put_failure;
10500
10501 genlmsg_end(msg, hdr);
10502
10503 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10504 NL80211_MCGRP_MLME, gfp);
10505 return;
10506
10507 nla_put_failure:
10508 genlmsg_cancel(msg, hdr);
10509 nlmsg_free(msg);
10510 }
10511
10512 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10513 struct ieee80211_channel *channel_before,
10514 struct ieee80211_channel *channel_after)
10515 {
10516 struct sk_buff *msg;
10517 void *hdr;
10518 struct nlattr *nl_freq;
10519
10520 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10521 if (!msg)
10522 return;
10523
10524 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10525 if (!hdr) {
10526 nlmsg_free(msg);
10527 return;
10528 }
10529
10530 /*
10531 * Since we are applying the beacon hint to a wiphy we know its
10532 * wiphy_idx is valid
10533 */
10534 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10535 goto nla_put_failure;
10536
10537 /* Before */
10538 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10539 if (!nl_freq)
10540 goto nla_put_failure;
10541 if (nl80211_msg_put_channel(msg, channel_before, false))
10542 goto nla_put_failure;
10543 nla_nest_end(msg, nl_freq);
10544
10545 /* After */
10546 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10547 if (!nl_freq)
10548 goto nla_put_failure;
10549 if (nl80211_msg_put_channel(msg, channel_after, false))
10550 goto nla_put_failure;
10551 nla_nest_end(msg, nl_freq);
10552
10553 genlmsg_end(msg, hdr);
10554
10555 rcu_read_lock();
10556 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10557 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10558 rcu_read_unlock();
10559
10560 return;
10561
10562 nla_put_failure:
10563 genlmsg_cancel(msg, hdr);
10564 nlmsg_free(msg);
10565 }
10566
10567 static void nl80211_send_remain_on_chan_event(
10568 int cmd, struct cfg80211_registered_device *rdev,
10569 struct wireless_dev *wdev, u64 cookie,
10570 struct ieee80211_channel *chan,
10571 unsigned int duration, gfp_t gfp)
10572 {
10573 struct sk_buff *msg;
10574 void *hdr;
10575
10576 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10577 if (!msg)
10578 return;
10579
10580 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10581 if (!hdr) {
10582 nlmsg_free(msg);
10583 return;
10584 }
10585
10586 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10587 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10588 wdev->netdev->ifindex)) ||
10589 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10590 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10591 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10592 NL80211_CHAN_NO_HT) ||
10593 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10594 goto nla_put_failure;
10595
10596 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10597 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10598 goto nla_put_failure;
10599
10600 genlmsg_end(msg, hdr);
10601
10602 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10603 NL80211_MCGRP_MLME, gfp);
10604 return;
10605
10606 nla_put_failure:
10607 genlmsg_cancel(msg, hdr);
10608 nlmsg_free(msg);
10609 }
10610
10611 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10612 struct ieee80211_channel *chan,
10613 unsigned int duration, gfp_t gfp)
10614 {
10615 struct wiphy *wiphy = wdev->wiphy;
10616 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10617
10618 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10619 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10620 rdev, wdev, cookie, chan,
10621 duration, gfp);
10622 }
10623 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10624
10625 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10626 struct ieee80211_channel *chan,
10627 gfp_t gfp)
10628 {
10629 struct wiphy *wiphy = wdev->wiphy;
10630 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10631
10632 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10633 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10634 rdev, wdev, cookie, chan, 0, gfp);
10635 }
10636 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10637
10638 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10639 struct station_info *sinfo, gfp_t gfp)
10640 {
10641 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10642 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10643 struct sk_buff *msg;
10644
10645 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10646
10647 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10648 if (!msg)
10649 return;
10650
10651 if (nl80211_send_station(msg, 0, 0, 0,
10652 rdev, dev, mac_addr, sinfo) < 0) {
10653 nlmsg_free(msg);
10654 return;
10655 }
10656
10657 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10658 NL80211_MCGRP_MLME, gfp);
10659 }
10660 EXPORT_SYMBOL(cfg80211_new_sta);
10661
10662 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10663 {
10664 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10665 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10666 struct sk_buff *msg;
10667 void *hdr;
10668
10669 trace_cfg80211_del_sta(dev, mac_addr);
10670
10671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10672 if (!msg)
10673 return;
10674
10675 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10676 if (!hdr) {
10677 nlmsg_free(msg);
10678 return;
10679 }
10680
10681 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10682 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10683 goto nla_put_failure;
10684
10685 genlmsg_end(msg, hdr);
10686
10687 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10688 NL80211_MCGRP_MLME, gfp);
10689 return;
10690
10691 nla_put_failure:
10692 genlmsg_cancel(msg, hdr);
10693 nlmsg_free(msg);
10694 }
10695 EXPORT_SYMBOL(cfg80211_del_sta);
10696
10697 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10698 enum nl80211_connect_failed_reason reason,
10699 gfp_t gfp)
10700 {
10701 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10702 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10703 struct sk_buff *msg;
10704 void *hdr;
10705
10706 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10707 if (!msg)
10708 return;
10709
10710 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10711 if (!hdr) {
10712 nlmsg_free(msg);
10713 return;
10714 }
10715
10716 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10717 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10718 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10719 goto nla_put_failure;
10720
10721 genlmsg_end(msg, hdr);
10722
10723 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10724 NL80211_MCGRP_MLME, gfp);
10725 return;
10726
10727 nla_put_failure:
10728 genlmsg_cancel(msg, hdr);
10729 nlmsg_free(msg);
10730 }
10731 EXPORT_SYMBOL(cfg80211_conn_failed);
10732
10733 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10734 const u8 *addr, gfp_t gfp)
10735 {
10736 struct wireless_dev *wdev = dev->ieee80211_ptr;
10737 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10738 struct sk_buff *msg;
10739 void *hdr;
10740 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10741
10742 if (!nlportid)
10743 return false;
10744
10745 msg = nlmsg_new(100, gfp);
10746 if (!msg)
10747 return true;
10748
10749 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10750 if (!hdr) {
10751 nlmsg_free(msg);
10752 return true;
10753 }
10754
10755 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10756 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10757 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10758 goto nla_put_failure;
10759
10760 genlmsg_end(msg, hdr);
10761 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10762 return true;
10763
10764 nla_put_failure:
10765 genlmsg_cancel(msg, hdr);
10766 nlmsg_free(msg);
10767 return true;
10768 }
10769
10770 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10771 const u8 *addr, gfp_t gfp)
10772 {
10773 struct wireless_dev *wdev = dev->ieee80211_ptr;
10774 bool ret;
10775
10776 trace_cfg80211_rx_spurious_frame(dev, addr);
10777
10778 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10779 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10780 trace_cfg80211_return_bool(false);
10781 return false;
10782 }
10783 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10784 addr, gfp);
10785 trace_cfg80211_return_bool(ret);
10786 return ret;
10787 }
10788 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10789
10790 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10791 const u8 *addr, gfp_t gfp)
10792 {
10793 struct wireless_dev *wdev = dev->ieee80211_ptr;
10794 bool ret;
10795
10796 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10797
10798 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10799 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10800 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10801 trace_cfg80211_return_bool(false);
10802 return false;
10803 }
10804 ret = __nl80211_unexpected_frame(dev,
10805 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10806 addr, gfp);
10807 trace_cfg80211_return_bool(ret);
10808 return ret;
10809 }
10810 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10811
10812 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10813 struct wireless_dev *wdev, u32 nlportid,
10814 int freq, int sig_dbm,
10815 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10816 {
10817 struct net_device *netdev = wdev->netdev;
10818 struct sk_buff *msg;
10819 void *hdr;
10820
10821 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10822 if (!msg)
10823 return -ENOMEM;
10824
10825 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10826 if (!hdr) {
10827 nlmsg_free(msg);
10828 return -ENOMEM;
10829 }
10830
10831 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10832 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10833 netdev->ifindex)) ||
10834 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10835 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10836 (sig_dbm &&
10837 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10838 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10839 (flags &&
10840 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10841 goto nla_put_failure;
10842
10843 genlmsg_end(msg, hdr);
10844
10845 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10846
10847 nla_put_failure:
10848 genlmsg_cancel(msg, hdr);
10849 nlmsg_free(msg);
10850 return -ENOBUFS;
10851 }
10852
10853 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10854 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10855 {
10856 struct wiphy *wiphy = wdev->wiphy;
10857 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10858 struct net_device *netdev = wdev->netdev;
10859 struct sk_buff *msg;
10860 void *hdr;
10861
10862 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10863
10864 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10865 if (!msg)
10866 return;
10867
10868 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10869 if (!hdr) {
10870 nlmsg_free(msg);
10871 return;
10872 }
10873
10874 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10875 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10876 netdev->ifindex)) ||
10877 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10878 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10879 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10880 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10881 goto nla_put_failure;
10882
10883 genlmsg_end(msg, hdr);
10884
10885 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10886 NL80211_MCGRP_MLME, gfp);
10887 return;
10888
10889 nla_put_failure:
10890 genlmsg_cancel(msg, hdr);
10891 nlmsg_free(msg);
10892 }
10893 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10894
10895 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10896 enum nl80211_cqm_rssi_threshold_event rssi_event,
10897 gfp_t gfp)
10898 {
10899 struct wireless_dev *wdev = dev->ieee80211_ptr;
10900 struct wiphy *wiphy = wdev->wiphy;
10901 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10902 struct sk_buff *msg;
10903 struct nlattr *pinfoattr;
10904 void *hdr;
10905
10906 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10907
10908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10909 if (!msg)
10910 return;
10911
10912 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10913 if (!hdr) {
10914 nlmsg_free(msg);
10915 return;
10916 }
10917
10918 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10919 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10920 goto nla_put_failure;
10921
10922 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10923 if (!pinfoattr)
10924 goto nla_put_failure;
10925
10926 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10927 rssi_event))
10928 goto nla_put_failure;
10929
10930 nla_nest_end(msg, pinfoattr);
10931
10932 genlmsg_end(msg, hdr);
10933
10934 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10935 NL80211_MCGRP_MLME, gfp);
10936 return;
10937
10938 nla_put_failure:
10939 genlmsg_cancel(msg, hdr);
10940 nlmsg_free(msg);
10941 }
10942 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10943
10944 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10945 struct net_device *netdev, const u8 *bssid,
10946 const u8 *replay_ctr, gfp_t gfp)
10947 {
10948 struct sk_buff *msg;
10949 struct nlattr *rekey_attr;
10950 void *hdr;
10951
10952 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10953 if (!msg)
10954 return;
10955
10956 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10957 if (!hdr) {
10958 nlmsg_free(msg);
10959 return;
10960 }
10961
10962 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10963 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10964 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10965 goto nla_put_failure;
10966
10967 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10968 if (!rekey_attr)
10969 goto nla_put_failure;
10970
10971 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10972 NL80211_REPLAY_CTR_LEN, replay_ctr))
10973 goto nla_put_failure;
10974
10975 nla_nest_end(msg, rekey_attr);
10976
10977 genlmsg_end(msg, hdr);
10978
10979 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10980 NL80211_MCGRP_MLME, gfp);
10981 return;
10982
10983 nla_put_failure:
10984 genlmsg_cancel(msg, hdr);
10985 nlmsg_free(msg);
10986 }
10987
10988 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10989 const u8 *replay_ctr, gfp_t gfp)
10990 {
10991 struct wireless_dev *wdev = dev->ieee80211_ptr;
10992 struct wiphy *wiphy = wdev->wiphy;
10993 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10994
10995 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10996 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10997 }
10998 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10999
11000 static void
11001 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11002 struct net_device *netdev, int index,
11003 const u8 *bssid, bool preauth, gfp_t gfp)
11004 {
11005 struct sk_buff *msg;
11006 struct nlattr *attr;
11007 void *hdr;
11008
11009 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11010 if (!msg)
11011 return;
11012
11013 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11014 if (!hdr) {
11015 nlmsg_free(msg);
11016 return;
11017 }
11018
11019 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11020 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11021 goto nla_put_failure;
11022
11023 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11024 if (!attr)
11025 goto nla_put_failure;
11026
11027 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11028 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11029 (preauth &&
11030 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11031 goto nla_put_failure;
11032
11033 nla_nest_end(msg, attr);
11034
11035 genlmsg_end(msg, hdr);
11036
11037 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11038 NL80211_MCGRP_MLME, gfp);
11039 return;
11040
11041 nla_put_failure:
11042 genlmsg_cancel(msg, hdr);
11043 nlmsg_free(msg);
11044 }
11045
11046 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11047 const u8 *bssid, bool preauth, gfp_t gfp)
11048 {
11049 struct wireless_dev *wdev = dev->ieee80211_ptr;
11050 struct wiphy *wiphy = wdev->wiphy;
11051 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11052
11053 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11054 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11055 }
11056 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11057
11058 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11059 struct net_device *netdev,
11060 struct cfg80211_chan_def *chandef,
11061 gfp_t gfp)
11062 {
11063 struct sk_buff *msg;
11064 void *hdr;
11065
11066 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11067 if (!msg)
11068 return;
11069
11070 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11071 if (!hdr) {
11072 nlmsg_free(msg);
11073 return;
11074 }
11075
11076 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11077 goto nla_put_failure;
11078
11079 if (nl80211_send_chandef(msg, chandef))
11080 goto nla_put_failure;
11081
11082 genlmsg_end(msg, hdr);
11083
11084 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11085 NL80211_MCGRP_MLME, gfp);
11086 return;
11087
11088 nla_put_failure:
11089 genlmsg_cancel(msg, hdr);
11090 nlmsg_free(msg);
11091 }
11092
11093 void cfg80211_ch_switch_notify(struct net_device *dev,
11094 struct cfg80211_chan_def *chandef)
11095 {
11096 struct wireless_dev *wdev = dev->ieee80211_ptr;
11097 struct wiphy *wiphy = wdev->wiphy;
11098 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11099
11100 ASSERT_WDEV_LOCK(wdev);
11101
11102 trace_cfg80211_ch_switch_notify(dev, chandef);
11103
11104 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11105 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11106 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11107 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11108 return;
11109
11110 wdev->channel = chandef->chan;
11111 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11112 }
11113 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11114
11115 void cfg80211_cqm_txe_notify(struct net_device *dev,
11116 const u8 *peer, u32 num_packets,
11117 u32 rate, u32 intvl, gfp_t gfp)
11118 {
11119 struct wireless_dev *wdev = dev->ieee80211_ptr;
11120 struct wiphy *wiphy = wdev->wiphy;
11121 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11122 struct sk_buff *msg;
11123 struct nlattr *pinfoattr;
11124 void *hdr;
11125
11126 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11127 if (!msg)
11128 return;
11129
11130 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11131 if (!hdr) {
11132 nlmsg_free(msg);
11133 return;
11134 }
11135
11136 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11137 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11138 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11139 goto nla_put_failure;
11140
11141 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11142 if (!pinfoattr)
11143 goto nla_put_failure;
11144
11145 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11146 goto nla_put_failure;
11147
11148 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11149 goto nla_put_failure;
11150
11151 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11152 goto nla_put_failure;
11153
11154 nla_nest_end(msg, pinfoattr);
11155
11156 genlmsg_end(msg, hdr);
11157
11158 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11159 NL80211_MCGRP_MLME, gfp);
11160 return;
11161
11162 nla_put_failure:
11163 genlmsg_cancel(msg, hdr);
11164 nlmsg_free(msg);
11165 }
11166 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11167
11168 void
11169 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11170 const struct cfg80211_chan_def *chandef,
11171 enum nl80211_radar_event event,
11172 struct net_device *netdev, gfp_t gfp)
11173 {
11174 struct sk_buff *msg;
11175 void *hdr;
11176
11177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11178 if (!msg)
11179 return;
11180
11181 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11182 if (!hdr) {
11183 nlmsg_free(msg);
11184 return;
11185 }
11186
11187 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11188 goto nla_put_failure;
11189
11190 /* NOP and radar events don't need a netdev parameter */
11191 if (netdev) {
11192 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11193
11194 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11195 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11196 goto nla_put_failure;
11197 }
11198
11199 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11200 goto nla_put_failure;
11201
11202 if (nl80211_send_chandef(msg, chandef))
11203 goto nla_put_failure;
11204
11205 genlmsg_end(msg, hdr);
11206
11207 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11208 NL80211_MCGRP_MLME, gfp);
11209 return;
11210
11211 nla_put_failure:
11212 genlmsg_cancel(msg, hdr);
11213 nlmsg_free(msg);
11214 }
11215
11216 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11217 const u8 *peer, u32 num_packets, gfp_t gfp)
11218 {
11219 struct wireless_dev *wdev = dev->ieee80211_ptr;
11220 struct wiphy *wiphy = wdev->wiphy;
11221 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11222 struct sk_buff *msg;
11223 struct nlattr *pinfoattr;
11224 void *hdr;
11225
11226 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11227
11228 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11229 if (!msg)
11230 return;
11231
11232 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11233 if (!hdr) {
11234 nlmsg_free(msg);
11235 return;
11236 }
11237
11238 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11239 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11240 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11241 goto nla_put_failure;
11242
11243 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11244 if (!pinfoattr)
11245 goto nla_put_failure;
11246
11247 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11248 goto nla_put_failure;
11249
11250 nla_nest_end(msg, pinfoattr);
11251
11252 genlmsg_end(msg, hdr);
11253
11254 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11255 NL80211_MCGRP_MLME, gfp);
11256 return;
11257
11258 nla_put_failure:
11259 genlmsg_cancel(msg, hdr);
11260 nlmsg_free(msg);
11261 }
11262 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11263
11264 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11265 u64 cookie, bool acked, gfp_t gfp)
11266 {
11267 struct wireless_dev *wdev = dev->ieee80211_ptr;
11268 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11269 struct sk_buff *msg;
11270 void *hdr;
11271
11272 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11273
11274 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11275
11276 if (!msg)
11277 return;
11278
11279 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11280 if (!hdr) {
11281 nlmsg_free(msg);
11282 return;
11283 }
11284
11285 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11286 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11287 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11288 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11289 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11290 goto nla_put_failure;
11291
11292 genlmsg_end(msg, hdr);
11293
11294 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11295 NL80211_MCGRP_MLME, gfp);
11296 return;
11297
11298 nla_put_failure:
11299 genlmsg_cancel(msg, hdr);
11300 nlmsg_free(msg);
11301 }
11302 EXPORT_SYMBOL(cfg80211_probe_status);
11303
11304 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11305 const u8 *frame, size_t len,
11306 int freq, int sig_dbm)
11307 {
11308 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11309 struct sk_buff *msg;
11310 void *hdr;
11311 struct cfg80211_beacon_registration *reg;
11312
11313 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11314
11315 spin_lock_bh(&rdev->beacon_registrations_lock);
11316 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11317 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11318 if (!msg) {
11319 spin_unlock_bh(&rdev->beacon_registrations_lock);
11320 return;
11321 }
11322
11323 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11324 if (!hdr)
11325 goto nla_put_failure;
11326
11327 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11328 (freq &&
11329 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11330 (sig_dbm &&
11331 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11332 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11333 goto nla_put_failure;
11334
11335 genlmsg_end(msg, hdr);
11336
11337 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11338 }
11339 spin_unlock_bh(&rdev->beacon_registrations_lock);
11340 return;
11341
11342 nla_put_failure:
11343 spin_unlock_bh(&rdev->beacon_registrations_lock);
11344 if (hdr)
11345 genlmsg_cancel(msg, hdr);
11346 nlmsg_free(msg);
11347 }
11348 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11349
11350 #ifdef CONFIG_PM
11351 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11352 struct cfg80211_wowlan_wakeup *wakeup,
11353 gfp_t gfp)
11354 {
11355 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11356 struct sk_buff *msg;
11357 void *hdr;
11358 int size = 200;
11359
11360 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11361
11362 if (wakeup)
11363 size += wakeup->packet_present_len;
11364
11365 msg = nlmsg_new(size, gfp);
11366 if (!msg)
11367 return;
11368
11369 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11370 if (!hdr)
11371 goto free_msg;
11372
11373 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11374 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11375 goto free_msg;
11376
11377 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11378 wdev->netdev->ifindex))
11379 goto free_msg;
11380
11381 if (wakeup) {
11382 struct nlattr *reasons;
11383
11384 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11385 if (!reasons)
11386 goto free_msg;
11387
11388 if (wakeup->disconnect &&
11389 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11390 goto free_msg;
11391 if (wakeup->magic_pkt &&
11392 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11393 goto free_msg;
11394 if (wakeup->gtk_rekey_failure &&
11395 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11396 goto free_msg;
11397 if (wakeup->eap_identity_req &&
11398 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11399 goto free_msg;
11400 if (wakeup->four_way_handshake &&
11401 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11402 goto free_msg;
11403 if (wakeup->rfkill_release &&
11404 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11405 goto free_msg;
11406
11407 if (wakeup->pattern_idx >= 0 &&
11408 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11409 wakeup->pattern_idx))
11410 goto free_msg;
11411
11412 if (wakeup->tcp_match &&
11413 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11414 goto free_msg;
11415
11416 if (wakeup->tcp_connlost &&
11417 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11418 goto free_msg;
11419
11420 if (wakeup->tcp_nomoretokens &&
11421 nla_put_flag(msg,
11422 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11423 goto free_msg;
11424
11425 if (wakeup->packet) {
11426 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11427 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11428
11429 if (!wakeup->packet_80211) {
11430 pkt_attr =
11431 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11432 len_attr =
11433 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11434 }
11435
11436 if (wakeup->packet_len &&
11437 nla_put_u32(msg, len_attr, wakeup->packet_len))
11438 goto free_msg;
11439
11440 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11441 wakeup->packet))
11442 goto free_msg;
11443 }
11444
11445 nla_nest_end(msg, reasons);
11446 }
11447
11448 genlmsg_end(msg, hdr);
11449
11450 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11451 NL80211_MCGRP_MLME, gfp);
11452 return;
11453
11454 free_msg:
11455 nlmsg_free(msg);
11456 }
11457 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11458 #endif
11459
11460 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11461 enum nl80211_tdls_operation oper,
11462 u16 reason_code, gfp_t gfp)
11463 {
11464 struct wireless_dev *wdev = dev->ieee80211_ptr;
11465 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11466 struct sk_buff *msg;
11467 void *hdr;
11468
11469 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11470 reason_code);
11471
11472 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11473 if (!msg)
11474 return;
11475
11476 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11477 if (!hdr) {
11478 nlmsg_free(msg);
11479 return;
11480 }
11481
11482 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11483 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11484 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11485 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11486 (reason_code > 0 &&
11487 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11488 goto nla_put_failure;
11489
11490 genlmsg_end(msg, hdr);
11491
11492 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11493 NL80211_MCGRP_MLME, gfp);
11494 return;
11495
11496 nla_put_failure:
11497 genlmsg_cancel(msg, hdr);
11498 nlmsg_free(msg);
11499 }
11500 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11501
11502 static int nl80211_netlink_notify(struct notifier_block * nb,
11503 unsigned long state,
11504 void *_notify)
11505 {
11506 struct netlink_notify *notify = _notify;
11507 struct cfg80211_registered_device *rdev;
11508 struct wireless_dev *wdev;
11509 struct cfg80211_beacon_registration *reg, *tmp;
11510
11511 if (state != NETLINK_URELEASE)
11512 return NOTIFY_DONE;
11513
11514 rcu_read_lock();
11515
11516 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11517 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11518 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11519
11520 spin_lock_bh(&rdev->beacon_registrations_lock);
11521 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11522 list) {
11523 if (reg->nlportid == notify->portid) {
11524 list_del(&reg->list);
11525 kfree(reg);
11526 break;
11527 }
11528 }
11529 spin_unlock_bh(&rdev->beacon_registrations_lock);
11530 }
11531
11532 rcu_read_unlock();
11533
11534 return NOTIFY_DONE;
11535 }
11536
11537 static struct notifier_block nl80211_netlink_notifier = {
11538 .notifier_call = nl80211_netlink_notify,
11539 };
11540
11541 void cfg80211_ft_event(struct net_device *netdev,
11542 struct cfg80211_ft_event_params *ft_event)
11543 {
11544 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11545 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11546 struct sk_buff *msg;
11547 void *hdr;
11548
11549 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11550
11551 if (!ft_event->target_ap)
11552 return;
11553
11554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11555 if (!msg)
11556 return;
11557
11558 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11559 if (!hdr)
11560 goto out;
11561
11562 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11563 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11564 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
11565 goto out;
11566
11567 if (ft_event->ies &&
11568 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
11569 goto out;
11570 if (ft_event->ric_ies &&
11571 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11572 ft_event->ric_ies))
11573 goto out;
11574
11575 genlmsg_end(msg, hdr);
11576
11577 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11578 NL80211_MCGRP_MLME, GFP_KERNEL);
11579 return;
11580 out:
11581 nlmsg_free(msg);
11582 }
11583 EXPORT_SYMBOL(cfg80211_ft_event);
11584
11585 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11586 {
11587 struct cfg80211_registered_device *rdev;
11588 struct sk_buff *msg;
11589 void *hdr;
11590 u32 nlportid;
11591
11592 rdev = wiphy_to_dev(wdev->wiphy);
11593 if (!rdev->crit_proto_nlportid)
11594 return;
11595
11596 nlportid = rdev->crit_proto_nlportid;
11597 rdev->crit_proto_nlportid = 0;
11598
11599 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11600 if (!msg)
11601 return;
11602
11603 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11604 if (!hdr)
11605 goto nla_put_failure;
11606
11607 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11608 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11609 goto nla_put_failure;
11610
11611 genlmsg_end(msg, hdr);
11612
11613 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11614 return;
11615
11616 nla_put_failure:
11617 if (hdr)
11618 genlmsg_cancel(msg, hdr);
11619 nlmsg_free(msg);
11620
11621 }
11622 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11623
11624 /* initialisation/exit functions */
11625
11626 int nl80211_init(void)
11627 {
11628 int err;
11629
11630 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
11631 nl80211_mcgrps);
11632 if (err)
11633 return err;
11634
11635 err = netlink_register_notifier(&nl80211_netlink_notifier);
11636 if (err)
11637 goto err_out;
11638
11639 return 0;
11640 err_out:
11641 genl_unregister_family(&nl80211_fam);
11642 return err;
11643 }
11644
11645 void nl80211_exit(void)
11646 {
11647 netlink_unregister_notifier(&nl80211_netlink_notifier);
11648 genl_unregister_family(&nl80211_fam);
11649 }
Linux kernel - Deliverables
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