Commit | Line | Data |
---|---|---|
6039f6d2 JM |
1 | /* |
2 | * cfg80211 MLME SAP interface | |
3 | * | |
4 | * Copyright (c) 2009, Jouni Malinen <j@w1.fi> | |
33d8783c | 5 | * Copyright (c) 2015 Intel Deutschland GmbH |
6039f6d2 JM |
6 | */ |
7 | ||
8 | #include <linux/kernel.h> | |
9 | #include <linux/module.h> | |
c6fb08aa | 10 | #include <linux/etherdevice.h> |
6039f6d2 JM |
11 | #include <linux/netdevice.h> |
12 | #include <linux/nl80211.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
a9a11622 | 14 | #include <linux/wireless.h> |
6039f6d2 | 15 | #include <net/cfg80211.h> |
a9a11622 | 16 | #include <net/iw_handler.h> |
6039f6d2 JM |
17 | #include "core.h" |
18 | #include "nl80211.h" | |
e35e4d28 HG |
19 | #include "rdev-ops.h" |
20 | ||
6039f6d2 | 21 | |
6ff57cf8 | 22 | void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss, |
b0b6aa2c | 23 | const u8 *buf, size_t len, int uapsd_queues) |
6039f6d2 | 24 | { |
6829c878 JB |
25 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
26 | struct wiphy *wiphy = wdev->wiphy; | |
f26cbf40 | 27 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
6829c878 JB |
28 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
29 | u8 *ie = mgmt->u.assoc_resp.variable; | |
95de817b | 30 | int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable); |
ceca7b71 | 31 | u16 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); |
6829c878 | 32 | |
4ee3e063 | 33 | trace_cfg80211_send_rx_assoc(dev, bss); |
cb0b4beb | 34 | |
f401a6f7 JB |
35 | /* |
36 | * This is a bit of a hack, we don't notify userspace of | |
37 | * a (re-)association reply if we tried to send a reassoc | |
38 | * and got a reject -- we only try again with an assoc | |
39 | * frame instead of reassoc. | |
40 | */ | |
ceca7b71 | 41 | if (cfg80211_sme_rx_assoc_resp(wdev, status_code)) { |
f1940c57 | 42 | cfg80211_unhold_bss(bss_from_pub(bss)); |
5b112d3d | 43 | cfg80211_put_bss(wiphy, bss); |
8d61ffa5 | 44 | return; |
95de817b | 45 | } |
f401a6f7 | 46 | |
b0b6aa2c | 47 | nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL, uapsd_queues); |
ceca7b71 | 48 | /* update current_bss etc., consumes the bss reference */ |
df7fc0f9 JB |
49 | __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs, |
50 | status_code, | |
95de817b | 51 | status_code == WLAN_STATUS_SUCCESS, bss); |
6039f6d2 | 52 | } |
6ff57cf8 | 53 | EXPORT_SYMBOL(cfg80211_rx_assoc_resp); |
6039f6d2 | 54 | |
ceca7b71 JB |
55 | static void cfg80211_process_auth(struct wireless_dev *wdev, |
56 | const u8 *buf, size_t len) | |
57 | { | |
f26cbf40 | 58 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
ceca7b71 JB |
59 | |
60 | nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL); | |
61 | cfg80211_sme_rx_auth(wdev, buf, len); | |
62 | } | |
63 | ||
64 | static void cfg80211_process_deauth(struct wireless_dev *wdev, | |
6ff57cf8 | 65 | const u8 *buf, size_t len) |
6039f6d2 | 66 | { |
f26cbf40 | 67 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
6829c878 | 68 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
19957bb3 | 69 | const u8 *bssid = mgmt->bssid; |
ceca7b71 JB |
70 | u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
71 | bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); | |
6829c878 | 72 | |
ceca7b71 | 73 | nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL); |
19957bb3 | 74 | |
ceca7b71 JB |
75 | if (!wdev->current_bss || |
76 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) | |
77 | return; | |
6829c878 | 78 | |
ceca7b71 JB |
79 | __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); |
80 | cfg80211_sme_deauth(wdev); | |
667503dd | 81 | } |
6039f6d2 | 82 | |
ceca7b71 | 83 | static void cfg80211_process_disassoc(struct wireless_dev *wdev, |
6ff57cf8 | 84 | const u8 *buf, size_t len) |
6039f6d2 | 85 | { |
f26cbf40 | 86 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
6829c878 | 87 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
19957bb3 | 88 | const u8 *bssid = mgmt->bssid; |
ceca7b71 JB |
89 | u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
90 | bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); | |
6829c878 | 91 | |
ceca7b71 | 92 | nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL); |
a3b8b056 | 93 | |
ceca7b71 JB |
94 | if (WARN_ON(!wdev->current_bss || |
95 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) | |
596a07c1 | 96 | return; |
6829c878 | 97 | |
ceca7b71 JB |
98 | __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); |
99 | cfg80211_sme_disassoc(wdev); | |
667503dd | 100 | } |
1965c853 | 101 | |
6ff57cf8 JB |
102 | void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) |
103 | { | |
104 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
6ff57cf8 JB |
105 | struct ieee80211_mgmt *mgmt = (void *)buf; |
106 | ||
107 | ASSERT_WDEV_LOCK(wdev); | |
108 | ||
109 | trace_cfg80211_rx_mlme_mgmt(dev, buf, len); | |
110 | ||
111 | if (WARN_ON(len < 2)) | |
112 | return; | |
113 | ||
ceca7b71 JB |
114 | if (ieee80211_is_auth(mgmt->frame_control)) |
115 | cfg80211_process_auth(wdev, buf, len); | |
116 | else if (ieee80211_is_deauth(mgmt->frame_control)) | |
117 | cfg80211_process_deauth(wdev, buf, len); | |
118 | else if (ieee80211_is_disassoc(mgmt->frame_control)) | |
119 | cfg80211_process_disassoc(wdev, buf, len); | |
6ff57cf8 JB |
120 | } |
121 | EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt); | |
122 | ||
123 | void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr) | |
a58ce43f JB |
124 | { |
125 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
126 | struct wiphy *wiphy = wdev->wiphy; | |
f26cbf40 | 127 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
a58ce43f | 128 | |
4ee3e063 | 129 | trace_cfg80211_send_auth_timeout(dev, addr); |
a58ce43f JB |
130 | |
131 | nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL); | |
ceca7b71 | 132 | cfg80211_sme_auth_timeout(wdev); |
1965c853 | 133 | } |
6ff57cf8 | 134 | EXPORT_SYMBOL(cfg80211_auth_timeout); |
1965c853 | 135 | |
959867fa | 136 | void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss) |
1965c853 | 137 | { |
6829c878 JB |
138 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
139 | struct wiphy *wiphy = wdev->wiphy; | |
f26cbf40 | 140 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
19957bb3 | 141 | |
959867fa | 142 | trace_cfg80211_send_assoc_timeout(dev, bss->bssid); |
cb0b4beb | 143 | |
959867fa | 144 | nl80211_send_assoc_timeout(rdev, dev, bss->bssid, GFP_KERNEL); |
ceca7b71 | 145 | cfg80211_sme_assoc_timeout(wdev); |
959867fa | 146 | |
f1940c57 | 147 | cfg80211_unhold_bss(bss_from_pub(bss)); |
959867fa | 148 | cfg80211_put_bss(wiphy, bss); |
1965c853 | 149 | } |
6ff57cf8 JB |
150 | EXPORT_SYMBOL(cfg80211_assoc_timeout); |
151 | ||
e6f462df JB |
152 | void cfg80211_abandon_assoc(struct net_device *dev, struct cfg80211_bss *bss) |
153 | { | |
154 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
155 | struct wiphy *wiphy = wdev->wiphy; | |
156 | ||
157 | cfg80211_sme_abandon_assoc(wdev); | |
158 | ||
159 | cfg80211_unhold_bss(bss_from_pub(bss)); | |
160 | cfg80211_put_bss(wiphy, bss); | |
161 | } | |
162 | EXPORT_SYMBOL(cfg80211_abandon_assoc); | |
163 | ||
6ff57cf8 JB |
164 | void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) |
165 | { | |
166 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
167 | struct ieee80211_mgmt *mgmt = (void *)buf; | |
168 | ||
169 | ASSERT_WDEV_LOCK(wdev); | |
170 | ||
171 | trace_cfg80211_tx_mlme_mgmt(dev, buf, len); | |
172 | ||
173 | if (WARN_ON(len < 2)) | |
174 | return; | |
175 | ||
176 | if (ieee80211_is_deauth(mgmt->frame_control)) | |
ceca7b71 | 177 | cfg80211_process_deauth(wdev, buf, len); |
6ff57cf8 | 178 | else |
ceca7b71 | 179 | cfg80211_process_disassoc(wdev, buf, len); |
6ff57cf8 JB |
180 | } |
181 | EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt); | |
1965c853 | 182 | |
a3b8b056 JM |
183 | void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, |
184 | enum nl80211_key_type key_type, int key_id, | |
e6d6e342 | 185 | const u8 *tsc, gfp_t gfp) |
a3b8b056 JM |
186 | { |
187 | struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; | |
f26cbf40 | 188 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
3d23e349 | 189 | #ifdef CONFIG_CFG80211_WEXT |
f58d4ed9 | 190 | union iwreq_data wrqu; |
e6d6e342 | 191 | char *buf = kmalloc(128, gfp); |
f58d4ed9 JB |
192 | |
193 | if (buf) { | |
194 | sprintf(buf, "MLME-MICHAELMICFAILURE.indication(" | |
195 | "keyid=%d %scast addr=%pM)", key_id, | |
196 | key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni", | |
197 | addr); | |
198 | memset(&wrqu, 0, sizeof(wrqu)); | |
199 | wrqu.data.length = strlen(buf); | |
200 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
201 | kfree(buf); | |
202 | } | |
203 | #endif | |
204 | ||
4ee3e063 | 205 | trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc); |
e6d6e342 | 206 | nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp); |
a3b8b056 JM |
207 | } |
208 | EXPORT_SYMBOL(cfg80211_michael_mic_failure); | |
19957bb3 JB |
209 | |
210 | /* some MLME handling for userspace SME */ | |
91bf9b26 JB |
211 | int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
212 | struct net_device *dev, | |
213 | struct ieee80211_channel *chan, | |
214 | enum nl80211_auth_type auth_type, | |
215 | const u8 *bssid, | |
216 | const u8 *ssid, int ssid_len, | |
217 | const u8 *ie, int ie_len, | |
218 | const u8 *key, int key_len, int key_idx, | |
11b6b5a4 | 219 | const u8 *auth_data, int auth_data_len) |
19957bb3 JB |
220 | { |
221 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
7ade7036 JB |
222 | struct cfg80211_auth_request req = { |
223 | .ie = ie, | |
224 | .ie_len = ie_len, | |
11b6b5a4 JM |
225 | .auth_data = auth_data, |
226 | .auth_data_len = auth_data_len, | |
7ade7036 JB |
227 | .auth_type = auth_type, |
228 | .key = key, | |
229 | .key_len = key_len, | |
230 | .key_idx = key_idx, | |
231 | }; | |
95de817b | 232 | int err; |
19957bb3 | 233 | |
667503dd JB |
234 | ASSERT_WDEV_LOCK(wdev); |
235 | ||
fffd0934 | 236 | if (auth_type == NL80211_AUTHTYPE_SHARED_KEY) |
b6b5555b | 237 | if (!key || !key_len || key_idx < 0 || key_idx > 3) |
fffd0934 JB |
238 | return -EINVAL; |
239 | ||
0a9b5e17 | 240 | if (wdev->current_bss && |
ac422d3c | 241 | ether_addr_equal(bssid, wdev->current_bss->pub.bssid)) |
0a9b5e17 JB |
242 | return -EALREADY; |
243 | ||
19957bb3 | 244 | req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
6eb18137 DL |
245 | IEEE80211_BSS_TYPE_ESS, |
246 | IEEE80211_PRIVACY_ANY); | |
19957bb3 JB |
247 | if (!req.bss) |
248 | return -ENOENT; | |
249 | ||
e35e4d28 | 250 | err = rdev_auth(rdev, dev, &req); |
19957bb3 | 251 | |
5b112d3d | 252 | cfg80211_put_bss(&rdev->wiphy, req.bss); |
19957bb3 JB |
253 | return err; |
254 | } | |
255 | ||
7e7c8926 BG |
256 | /* Do a logical ht_capa &= ht_capa_mask. */ |
257 | void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa, | |
258 | const struct ieee80211_ht_cap *ht_capa_mask) | |
259 | { | |
260 | int i; | |
261 | u8 *p1, *p2; | |
262 | if (!ht_capa_mask) { | |
263 | memset(ht_capa, 0, sizeof(*ht_capa)); | |
264 | return; | |
265 | } | |
266 | ||
267 | p1 = (u8*)(ht_capa); | |
268 | p2 = (u8*)(ht_capa_mask); | |
269 | for (i = 0; i<sizeof(*ht_capa); i++) | |
270 | p1[i] &= p2[i]; | |
271 | } | |
272 | ||
ee2aca34 JB |
273 | /* Do a logical ht_capa &= ht_capa_mask. */ |
274 | void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa, | |
275 | const struct ieee80211_vht_cap *vht_capa_mask) | |
276 | { | |
277 | int i; | |
278 | u8 *p1, *p2; | |
279 | if (!vht_capa_mask) { | |
280 | memset(vht_capa, 0, sizeof(*vht_capa)); | |
281 | return; | |
282 | } | |
283 | ||
284 | p1 = (u8*)(vht_capa); | |
285 | p2 = (u8*)(vht_capa_mask); | |
286 | for (i = 0; i < sizeof(*vht_capa); i++) | |
287 | p1[i] &= p2[i]; | |
288 | } | |
289 | ||
91bf9b26 JB |
290 | int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
291 | struct net_device *dev, | |
292 | struct ieee80211_channel *chan, | |
293 | const u8 *bssid, | |
294 | const u8 *ssid, int ssid_len, | |
295 | struct cfg80211_assoc_request *req) | |
19957bb3 JB |
296 | { |
297 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b | 298 | int err; |
19957bb3 | 299 | |
667503dd JB |
300 | ASSERT_WDEV_LOCK(wdev); |
301 | ||
ceca7b71 JB |
302 | if (wdev->current_bss && |
303 | (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid, | |
304 | req->prev_bssid))) | |
19957bb3 JB |
305 | return -EALREADY; |
306 | ||
f62fab73 | 307 | cfg80211_oper_and_ht_capa(&req->ht_capa_mask, |
7e7c8926 | 308 | rdev->wiphy.ht_capa_mod_mask); |
f62fab73 | 309 | cfg80211_oper_and_vht_capa(&req->vht_capa_mask, |
ee2aca34 | 310 | rdev->wiphy.vht_capa_mod_mask); |
7e7c8926 | 311 | |
f62fab73 | 312 | req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
6eb18137 DL |
313 | IEEE80211_BSS_TYPE_ESS, |
314 | IEEE80211_PRIVACY_ANY); | |
ceca7b71 | 315 | if (!req->bss) |
19957bb3 JB |
316 | return -ENOENT; |
317 | ||
f62fab73 | 318 | err = rdev_assoc(rdev, dev, req); |
f1940c57 JB |
319 | if (!err) |
320 | cfg80211_hold_bss(bss_from_pub(req->bss)); | |
73de86a3 | 321 | else |
f62fab73 | 322 | cfg80211_put_bss(&rdev->wiphy, req->bss); |
19957bb3 | 323 | |
19957bb3 JB |
324 | return err; |
325 | } | |
326 | ||
91bf9b26 JB |
327 | int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, |
328 | struct net_device *dev, const u8 *bssid, | |
329 | const u8 *ie, int ie_len, u16 reason, | |
330 | bool local_state_change) | |
19957bb3 JB |
331 | { |
332 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b JB |
333 | struct cfg80211_deauth_request req = { |
334 | .bssid = bssid, | |
335 | .reason_code = reason, | |
336 | .ie = ie, | |
337 | .ie_len = ie_len, | |
6863255b | 338 | .local_state_change = local_state_change, |
95de817b | 339 | }; |
19957bb3 | 340 | |
667503dd JB |
341 | ASSERT_WDEV_LOCK(wdev); |
342 | ||
ceca7b71 JB |
343 | if (local_state_change && |
344 | (!wdev->current_bss || | |
345 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) | |
95de817b | 346 | return 0; |
19957bb3 | 347 | |
e35e4d28 | 348 | return rdev_deauth(rdev, dev, &req); |
19957bb3 JB |
349 | } |
350 | ||
91bf9b26 JB |
351 | int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, |
352 | struct net_device *dev, const u8 *bssid, | |
353 | const u8 *ie, int ie_len, u16 reason, | |
354 | bool local_state_change) | |
19957bb3 JB |
355 | { |
356 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
7ade7036 JB |
357 | struct cfg80211_disassoc_request req = { |
358 | .reason_code = reason, | |
359 | .local_state_change = local_state_change, | |
360 | .ie = ie, | |
361 | .ie_len = ie_len, | |
362 | }; | |
ceca7b71 | 363 | int err; |
19957bb3 | 364 | |
667503dd JB |
365 | ASSERT_WDEV_LOCK(wdev); |
366 | ||
ceca7b71 | 367 | if (!wdev->current_bss) |
f9d6b402 JB |
368 | return -ENOTCONN; |
369 | ||
ac422d3c | 370 | if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) |
19957bb3 JB |
371 | req.bss = &wdev->current_bss->pub; |
372 | else | |
373 | return -ENOTCONN; | |
374 | ||
ceca7b71 JB |
375 | err = rdev_disassoc(rdev, dev, &req); |
376 | if (err) | |
377 | return err; | |
378 | ||
379 | /* driver should have reported the disassoc */ | |
380 | WARN_ON(wdev->current_bss); | |
381 | return 0; | |
667503dd JB |
382 | } |
383 | ||
19957bb3 JB |
384 | void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, |
385 | struct net_device *dev) | |
386 | { | |
387 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b | 388 | u8 bssid[ETH_ALEN]; |
19957bb3 | 389 | |
667503dd JB |
390 | ASSERT_WDEV_LOCK(wdev); |
391 | ||
19957bb3 JB |
392 | if (!rdev->ops->deauth) |
393 | return; | |
394 | ||
95de817b JB |
395 | if (!wdev->current_bss) |
396 | return; | |
19957bb3 | 397 | |
95de817b | 398 | memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN); |
ceca7b71 JB |
399 | cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, |
400 | WLAN_REASON_DEAUTH_LEAVING, false); | |
19957bb3 | 401 | } |
9588bbd5 | 402 | |
2e161f78 | 403 | struct cfg80211_mgmt_registration { |
026331c4 | 404 | struct list_head list; |
33d8783c | 405 | struct wireless_dev *wdev; |
026331c4 | 406 | |
15e47304 | 407 | u32 nlportid; |
026331c4 JM |
408 | |
409 | int match_len; | |
410 | ||
2e161f78 JB |
411 | __le16 frame_type; |
412 | ||
026331c4 JM |
413 | u8 match[]; |
414 | }; | |
415 | ||
33d8783c JB |
416 | static void |
417 | cfg80211_process_mlme_unregistrations(struct cfg80211_registered_device *rdev) | |
418 | { | |
419 | struct cfg80211_mgmt_registration *reg; | |
420 | ||
421 | ASSERT_RTNL(); | |
422 | ||
423 | spin_lock_bh(&rdev->mlme_unreg_lock); | |
424 | while ((reg = list_first_entry_or_null(&rdev->mlme_unreg, | |
425 | struct cfg80211_mgmt_registration, | |
426 | list))) { | |
427 | list_del(®->list); | |
428 | spin_unlock_bh(&rdev->mlme_unreg_lock); | |
429 | ||
430 | if (rdev->ops->mgmt_frame_register) { | |
431 | u16 frame_type = le16_to_cpu(reg->frame_type); | |
432 | ||
433 | rdev_mgmt_frame_register(rdev, reg->wdev, | |
434 | frame_type, false); | |
435 | } | |
436 | ||
437 | kfree(reg); | |
438 | ||
439 | spin_lock_bh(&rdev->mlme_unreg_lock); | |
440 | } | |
441 | spin_unlock_bh(&rdev->mlme_unreg_lock); | |
442 | } | |
443 | ||
444 | void cfg80211_mlme_unreg_wk(struct work_struct *wk) | |
445 | { | |
446 | struct cfg80211_registered_device *rdev; | |
447 | ||
448 | rdev = container_of(wk, struct cfg80211_registered_device, | |
449 | mlme_unreg_wk); | |
450 | ||
451 | rtnl_lock(); | |
452 | cfg80211_process_mlme_unregistrations(rdev); | |
453 | rtnl_unlock(); | |
454 | } | |
455 | ||
15e47304 | 456 | int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid, |
2e161f78 JB |
457 | u16 frame_type, const u8 *match_data, |
458 | int match_len) | |
026331c4 | 459 | { |
271733cf | 460 | struct wiphy *wiphy = wdev->wiphy; |
f26cbf40 | 461 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
2e161f78 | 462 | struct cfg80211_mgmt_registration *reg, *nreg; |
026331c4 | 463 | int err = 0; |
2e161f78 JB |
464 | u16 mgmt_type; |
465 | ||
466 | if (!wdev->wiphy->mgmt_stypes) | |
467 | return -EOPNOTSUPP; | |
468 | ||
469 | if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) | |
470 | return -EINVAL; | |
471 | ||
472 | if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) | |
473 | return -EINVAL; | |
474 | ||
475 | mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4; | |
476 | if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) | |
477 | return -EINVAL; | |
026331c4 JM |
478 | |
479 | nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL); | |
480 | if (!nreg) | |
481 | return -ENOMEM; | |
482 | ||
2e161f78 | 483 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 484 | |
2e161f78 | 485 | list_for_each_entry(reg, &wdev->mgmt_registrations, list) { |
026331c4 JM |
486 | int mlen = min(match_len, reg->match_len); |
487 | ||
2e161f78 JB |
488 | if (frame_type != le16_to_cpu(reg->frame_type)) |
489 | continue; | |
490 | ||
026331c4 JM |
491 | if (memcmp(reg->match, match_data, mlen) == 0) { |
492 | err = -EALREADY; | |
493 | break; | |
494 | } | |
495 | } | |
496 | ||
497 | if (err) { | |
498 | kfree(nreg); | |
499 | goto out; | |
500 | } | |
501 | ||
502 | memcpy(nreg->match, match_data, match_len); | |
503 | nreg->match_len = match_len; | |
15e47304 | 504 | nreg->nlportid = snd_portid; |
2e161f78 | 505 | nreg->frame_type = cpu_to_le16(frame_type); |
33d8783c | 506 | nreg->wdev = wdev; |
2e161f78 | 507 | list_add(&nreg->list, &wdev->mgmt_registrations); |
33d8783c JB |
508 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
509 | ||
510 | /* process all unregistrations to avoid driver confusion */ | |
511 | cfg80211_process_mlme_unregistrations(rdev); | |
026331c4 | 512 | |
271733cf | 513 | if (rdev->ops->mgmt_frame_register) |
e35e4d28 | 514 | rdev_mgmt_frame_register(rdev, wdev, frame_type, true); |
271733cf | 515 | |
33d8783c JB |
516 | return 0; |
517 | ||
026331c4 | 518 | out: |
2e161f78 | 519 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
271733cf | 520 | |
026331c4 JM |
521 | return err; |
522 | } | |
523 | ||
15e47304 | 524 | void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid) |
026331c4 | 525 | { |
271733cf | 526 | struct wiphy *wiphy = wdev->wiphy; |
f26cbf40 | 527 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
2e161f78 | 528 | struct cfg80211_mgmt_registration *reg, *tmp; |
026331c4 | 529 | |
2e161f78 | 530 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 531 | |
2e161f78 | 532 | list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { |
15e47304 | 533 | if (reg->nlportid != nlportid) |
271733cf JB |
534 | continue; |
535 | ||
271733cf | 536 | list_del(®->list); |
33d8783c JB |
537 | spin_lock(&rdev->mlme_unreg_lock); |
538 | list_add_tail(®->list, &rdev->mlme_unreg); | |
539 | spin_unlock(&rdev->mlme_unreg_lock); | |
540 | ||
541 | schedule_work(&rdev->mlme_unreg_wk); | |
026331c4 JM |
542 | } |
543 | ||
2e161f78 | 544 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
28946da7 | 545 | |
5de17984 AS |
546 | if (nlportid && rdev->crit_proto_nlportid == nlportid) { |
547 | rdev->crit_proto_nlportid = 0; | |
548 | rdev_crit_proto_stop(rdev, wdev); | |
549 | } | |
550 | ||
15e47304 EB |
551 | if (nlportid == wdev->ap_unexpected_nlportid) |
552 | wdev->ap_unexpected_nlportid = 0; | |
026331c4 JM |
553 | } |
554 | ||
2e161f78 | 555 | void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev) |
026331c4 | 556 | { |
33d8783c | 557 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
026331c4 | 558 | |
2e161f78 | 559 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
33d8783c JB |
560 | spin_lock(&rdev->mlme_unreg_lock); |
561 | list_splice_tail_init(&wdev->mgmt_registrations, &rdev->mlme_unreg); | |
562 | spin_unlock(&rdev->mlme_unreg_lock); | |
2e161f78 | 563 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
33d8783c JB |
564 | |
565 | cfg80211_process_mlme_unregistrations(rdev); | |
026331c4 JM |
566 | } |
567 | ||
2e161f78 | 568 | int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, |
71bbc994 | 569 | struct wireless_dev *wdev, |
b176e629 | 570 | struct cfg80211_mgmt_tx_params *params, u64 *cookie) |
026331c4 | 571 | { |
026331c4 | 572 | const struct ieee80211_mgmt *mgmt; |
2e161f78 JB |
573 | u16 stype; |
574 | ||
575 | if (!wdev->wiphy->mgmt_stypes) | |
576 | return -EOPNOTSUPP; | |
026331c4 | 577 | |
2e161f78 | 578 | if (!rdev->ops->mgmt_tx) |
026331c4 | 579 | return -EOPNOTSUPP; |
2e161f78 | 580 | |
b176e629 | 581 | if (params->len < 24 + 1) |
026331c4 JM |
582 | return -EINVAL; |
583 | ||
b176e629 | 584 | mgmt = (const struct ieee80211_mgmt *)params->buf; |
2e161f78 JB |
585 | |
586 | if (!ieee80211_is_mgmt(mgmt->frame_control)) | |
026331c4 | 587 | return -EINVAL; |
2e161f78 JB |
588 | |
589 | stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; | |
590 | if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4))) | |
591 | return -EINVAL; | |
592 | ||
593 | if (ieee80211_is_action(mgmt->frame_control) && | |
594 | mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { | |
663fcafd JB |
595 | int err = 0; |
596 | ||
fe100acd JB |
597 | wdev_lock(wdev); |
598 | ||
663fcafd JB |
599 | switch (wdev->iftype) { |
600 | case NL80211_IFTYPE_ADHOC: | |
601 | case NL80211_IFTYPE_STATION: | |
602 | case NL80211_IFTYPE_P2P_CLIENT: | |
603 | if (!wdev->current_bss) { | |
604 | err = -ENOTCONN; | |
605 | break; | |
606 | } | |
607 | ||
ac422d3c JP |
608 | if (!ether_addr_equal(wdev->current_bss->pub.bssid, |
609 | mgmt->bssid)) { | |
663fcafd JB |
610 | err = -ENOTCONN; |
611 | break; | |
612 | } | |
613 | ||
614 | /* | |
615 | * check for IBSS DA must be done by driver as | |
616 | * cfg80211 doesn't track the stations | |
617 | */ | |
618 | if (wdev->iftype == NL80211_IFTYPE_ADHOC) | |
619 | break; | |
fe100acd | 620 | |
663fcafd | 621 | /* for station, check that DA is the AP */ |
ac422d3c JP |
622 | if (!ether_addr_equal(wdev->current_bss->pub.bssid, |
623 | mgmt->da)) { | |
663fcafd JB |
624 | err = -ENOTCONN; |
625 | break; | |
626 | } | |
627 | break; | |
628 | case NL80211_IFTYPE_AP: | |
629 | case NL80211_IFTYPE_P2P_GO: | |
630 | case NL80211_IFTYPE_AP_VLAN: | |
98104fde | 631 | if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev))) |
663fcafd JB |
632 | err = -EINVAL; |
633 | break; | |
0778a6a3 | 634 | case NL80211_IFTYPE_MESH_POINT: |
ac422d3c | 635 | if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) { |
0778a6a3 JC |
636 | err = -EINVAL; |
637 | break; | |
638 | } | |
639 | /* | |
640 | * check for mesh DA must be done by driver as | |
641 | * cfg80211 doesn't track the stations | |
642 | */ | |
643 | break; | |
98104fde JB |
644 | case NL80211_IFTYPE_P2P_DEVICE: |
645 | /* | |
646 | * fall through, P2P device only supports | |
647 | * public action frames | |
648 | */ | |
cb3b7d87 | 649 | case NL80211_IFTYPE_NAN: |
663fcafd JB |
650 | default: |
651 | err = -EOPNOTSUPP; | |
652 | break; | |
653 | } | |
fe100acd | 654 | wdev_unlock(wdev); |
663fcafd JB |
655 | |
656 | if (err) | |
657 | return err; | |
026331c4 JM |
658 | } |
659 | ||
98104fde | 660 | if (!ether_addr_equal(mgmt->sa, wdev_address(wdev))) |
026331c4 JM |
661 | return -EINVAL; |
662 | ||
663 | /* Transmit the Action frame as requested by user space */ | |
b176e629 | 664 | return rdev_mgmt_tx(rdev, wdev, params, cookie); |
026331c4 JM |
665 | } |
666 | ||
71bbc994 | 667 | bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_mbm, |
970fdfa8 | 668 | const u8 *buf, size_t len, u32 flags) |
026331c4 | 669 | { |
026331c4 | 670 | struct wiphy *wiphy = wdev->wiphy; |
f26cbf40 | 671 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
2e161f78 JB |
672 | struct cfg80211_mgmt_registration *reg; |
673 | const struct ieee80211_txrx_stypes *stypes = | |
674 | &wiphy->mgmt_stypes[wdev->iftype]; | |
675 | struct ieee80211_mgmt *mgmt = (void *)buf; | |
676 | const u8 *data; | |
677 | int data_len; | |
026331c4 | 678 | bool result = false; |
2e161f78 JB |
679 | __le16 ftype = mgmt->frame_control & |
680 | cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE); | |
681 | u16 stype; | |
026331c4 | 682 | |
4ee3e063 | 683 | trace_cfg80211_rx_mgmt(wdev, freq, sig_mbm); |
2e161f78 | 684 | stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4; |
026331c4 | 685 | |
4ee3e063 BL |
686 | if (!(stypes->rx & BIT(stype))) { |
687 | trace_cfg80211_return_bool(false); | |
2e161f78 | 688 | return false; |
4ee3e063 | 689 | } |
026331c4 | 690 | |
2e161f78 JB |
691 | data = buf + ieee80211_hdrlen(mgmt->frame_control); |
692 | data_len = len - ieee80211_hdrlen(mgmt->frame_control); | |
693 | ||
694 | spin_lock_bh(&wdev->mgmt_registrations_lock); | |
695 | ||
696 | list_for_each_entry(reg, &wdev->mgmt_registrations, list) { | |
697 | if (reg->frame_type != ftype) | |
698 | continue; | |
026331c4 | 699 | |
2e161f78 | 700 | if (reg->match_len > data_len) |
026331c4 JM |
701 | continue; |
702 | ||
2e161f78 | 703 | if (memcmp(reg->match, data, reg->match_len)) |
026331c4 JM |
704 | continue; |
705 | ||
706 | /* found match! */ | |
707 | ||
708 | /* Indicate the received Action frame to user space */ | |
15e47304 | 709 | if (nl80211_send_mgmt(rdev, wdev, reg->nlportid, |
804483e9 | 710 | freq, sig_mbm, |
970fdfa8 | 711 | buf, len, flags, GFP_ATOMIC)) |
026331c4 JM |
712 | continue; |
713 | ||
714 | result = true; | |
715 | break; | |
716 | } | |
717 | ||
2e161f78 | 718 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 719 | |
4ee3e063 | 720 | trace_cfg80211_return_bool(result); |
026331c4 JM |
721 | return result; |
722 | } | |
2e161f78 | 723 | EXPORT_SYMBOL(cfg80211_rx_mgmt); |
026331c4 | 724 | |
04f39047 SW |
725 | void cfg80211_dfs_channels_update_work(struct work_struct *work) |
726 | { | |
a85a7e28 | 727 | struct delayed_work *delayed_work = to_delayed_work(work); |
04f39047 SW |
728 | struct cfg80211_registered_device *rdev; |
729 | struct cfg80211_chan_def chandef; | |
730 | struct ieee80211_supported_band *sband; | |
731 | struct ieee80211_channel *c; | |
732 | struct wiphy *wiphy; | |
733 | bool check_again = false; | |
734 | unsigned long timeout, next_time = 0; | |
735 | int bandid, i; | |
736 | ||
04f39047 SW |
737 | rdev = container_of(delayed_work, struct cfg80211_registered_device, |
738 | dfs_update_channels_wk); | |
739 | wiphy = &rdev->wiphy; | |
740 | ||
5fe231e8 | 741 | rtnl_lock(); |
57fbcce3 | 742 | for (bandid = 0; bandid < NUM_NL80211_BANDS; bandid++) { |
04f39047 SW |
743 | sband = wiphy->bands[bandid]; |
744 | if (!sband) | |
745 | continue; | |
746 | ||
747 | for (i = 0; i < sband->n_channels; i++) { | |
748 | c = &sband->channels[i]; | |
749 | ||
750 | if (c->dfs_state != NL80211_DFS_UNAVAILABLE) | |
751 | continue; | |
752 | ||
c532a58b MK |
753 | timeout = c->dfs_state_entered + msecs_to_jiffies( |
754 | IEEE80211_DFS_MIN_NOP_TIME_MS); | |
04f39047 SW |
755 | |
756 | if (time_after_eq(jiffies, timeout)) { | |
757 | c->dfs_state = NL80211_DFS_USABLE; | |
bbe09bbc MK |
758 | c->dfs_state_entered = jiffies; |
759 | ||
04f39047 SW |
760 | cfg80211_chandef_create(&chandef, c, |
761 | NL80211_CHAN_NO_HT); | |
762 | ||
763 | nl80211_radar_notify(rdev, &chandef, | |
764 | NL80211_RADAR_NOP_FINISHED, | |
765 | NULL, GFP_ATOMIC); | |
766 | continue; | |
767 | } | |
768 | ||
769 | if (!check_again) | |
770 | next_time = timeout - jiffies; | |
771 | else | |
772 | next_time = min(next_time, timeout - jiffies); | |
773 | check_again = true; | |
774 | } | |
775 | } | |
5fe231e8 | 776 | rtnl_unlock(); |
04f39047 SW |
777 | |
778 | /* reschedule if there are other channels waiting to be cleared again */ | |
779 | if (check_again) | |
780 | queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, | |
781 | next_time); | |
782 | } | |
783 | ||
784 | ||
785 | void cfg80211_radar_event(struct wiphy *wiphy, | |
786 | struct cfg80211_chan_def *chandef, | |
787 | gfp_t gfp) | |
788 | { | |
f26cbf40 | 789 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
04f39047 SW |
790 | unsigned long timeout; |
791 | ||
792 | trace_cfg80211_radar_event(wiphy, chandef); | |
793 | ||
794 | /* only set the chandef supplied channel to unavailable, in | |
795 | * case the radar is detected on only one of multiple channels | |
796 | * spanned by the chandef. | |
797 | */ | |
798 | cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE); | |
799 | ||
800 | timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_NOP_TIME_MS); | |
801 | queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, | |
802 | timeout); | |
803 | ||
804 | nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp); | |
805 | } | |
806 | EXPORT_SYMBOL(cfg80211_radar_event); | |
807 | ||
808 | void cfg80211_cac_event(struct net_device *netdev, | |
d2859df5 | 809 | const struct cfg80211_chan_def *chandef, |
04f39047 SW |
810 | enum nl80211_radar_event event, gfp_t gfp) |
811 | { | |
812 | struct wireless_dev *wdev = netdev->ieee80211_ptr; | |
813 | struct wiphy *wiphy = wdev->wiphy; | |
f26cbf40 | 814 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
04f39047 SW |
815 | unsigned long timeout; |
816 | ||
817 | trace_cfg80211_cac_event(netdev, event); | |
818 | ||
819 | if (WARN_ON(!wdev->cac_started)) | |
820 | return; | |
821 | ||
9e0e2961 | 822 | if (WARN_ON(!wdev->chandef.chan)) |
04f39047 SW |
823 | return; |
824 | ||
04f39047 SW |
825 | switch (event) { |
826 | case NL80211_RADAR_CAC_FINISHED: | |
827 | timeout = wdev->cac_start_time + | |
31559f35 | 828 | msecs_to_jiffies(wdev->cac_time_ms); |
04f39047 | 829 | WARN_ON(!time_after_eq(jiffies, timeout)); |
d2859df5 | 830 | cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE); |
04f39047 SW |
831 | break; |
832 | case NL80211_RADAR_CAC_ABORTED: | |
833 | break; | |
834 | default: | |
835 | WARN_ON(1); | |
836 | return; | |
837 | } | |
838 | wdev->cac_started = false; | |
839 | ||
d2859df5 | 840 | nl80211_radar_notify(rdev, chandef, event, netdev, gfp); |
04f39047 SW |
841 | } |
842 | EXPORT_SYMBOL(cfg80211_cac_event); |