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Commit | Line | Data |
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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 | 28 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
5349a0f7 VK |
29 | struct cfg80211_connect_resp_params cr; |
30 | ||
31 | memset(&cr, 0, sizeof(cr)); | |
32 | cr.status = (int)le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
33 | cr.bssid = mgmt->bssid; | |
34 | cr.bss = bss; | |
35 | cr.resp_ie = mgmt->u.assoc_resp.variable; | |
36 | cr.resp_ie_len = | |
37 | len - offsetof(struct ieee80211_mgmt, u.assoc_resp.variable); | |
38 | cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED; | |
6829c878 | 39 | |
4ee3e063 | 40 | trace_cfg80211_send_rx_assoc(dev, bss); |
cb0b4beb | 41 | |
f401a6f7 JB |
42 | /* |
43 | * This is a bit of a hack, we don't notify userspace of | |
44 | * a (re-)association reply if we tried to send a reassoc | |
45 | * and got a reject -- we only try again with an assoc | |
46 | * frame instead of reassoc. | |
47 | */ | |
5349a0f7 | 48 | if (cfg80211_sme_rx_assoc_resp(wdev, cr.status)) { |
f1940c57 | 49 | cfg80211_unhold_bss(bss_from_pub(bss)); |
5b112d3d | 50 | cfg80211_put_bss(wiphy, bss); |
8d61ffa5 | 51 | return; |
95de817b | 52 | } |
f401a6f7 | 53 | |
b0b6aa2c | 54 | nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL, uapsd_queues); |
ceca7b71 | 55 | /* update current_bss etc., consumes the bss reference */ |
5349a0f7 | 56 | __cfg80211_connect_result(dev, &cr, cr.status == WLAN_STATUS_SUCCESS); |
6039f6d2 | 57 | } |
6ff57cf8 | 58 | EXPORT_SYMBOL(cfg80211_rx_assoc_resp); |
6039f6d2 | 59 | |
ceca7b71 JB |
60 | static void cfg80211_process_auth(struct wireless_dev *wdev, |
61 | const u8 *buf, size_t len) | |
62 | { | |
f26cbf40 | 63 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
ceca7b71 JB |
64 | |
65 | nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL); | |
66 | cfg80211_sme_rx_auth(wdev, buf, len); | |
67 | } | |
68 | ||
69 | static void cfg80211_process_deauth(struct wireless_dev *wdev, | |
6ff57cf8 | 70 | const u8 *buf, size_t len) |
6039f6d2 | 71 | { |
f26cbf40 | 72 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
6829c878 | 73 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
19957bb3 | 74 | const u8 *bssid = mgmt->bssid; |
ceca7b71 JB |
75 | u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
76 | bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); | |
6829c878 | 77 | |
ceca7b71 | 78 | nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL); |
19957bb3 | 79 | |
ceca7b71 JB |
80 | if (!wdev->current_bss || |
81 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) | |
82 | return; | |
6829c878 | 83 | |
ceca7b71 JB |
84 | __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); |
85 | cfg80211_sme_deauth(wdev); | |
667503dd | 86 | } |
6039f6d2 | 87 | |
ceca7b71 | 88 | static void cfg80211_process_disassoc(struct wireless_dev *wdev, |
6ff57cf8 | 89 | const u8 *buf, size_t len) |
6039f6d2 | 90 | { |
f26cbf40 | 91 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
6829c878 | 92 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
19957bb3 | 93 | const u8 *bssid = mgmt->bssid; |
ceca7b71 JB |
94 | u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
95 | bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); | |
6829c878 | 96 | |
ceca7b71 | 97 | nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL); |
a3b8b056 | 98 | |
ceca7b71 JB |
99 | if (WARN_ON(!wdev->current_bss || |
100 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) | |
596a07c1 | 101 | return; |
6829c878 | 102 | |
ceca7b71 JB |
103 | __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); |
104 | cfg80211_sme_disassoc(wdev); | |
667503dd | 105 | } |
1965c853 | 106 | |
6ff57cf8 JB |
107 | void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) |
108 | { | |
109 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
6ff57cf8 JB |
110 | struct ieee80211_mgmt *mgmt = (void *)buf; |
111 | ||
112 | ASSERT_WDEV_LOCK(wdev); | |
113 | ||
114 | trace_cfg80211_rx_mlme_mgmt(dev, buf, len); | |
115 | ||
116 | if (WARN_ON(len < 2)) | |
117 | return; | |
118 | ||
ceca7b71 JB |
119 | if (ieee80211_is_auth(mgmt->frame_control)) |
120 | cfg80211_process_auth(wdev, buf, len); | |
121 | else if (ieee80211_is_deauth(mgmt->frame_control)) | |
122 | cfg80211_process_deauth(wdev, buf, len); | |
123 | else if (ieee80211_is_disassoc(mgmt->frame_control)) | |
124 | cfg80211_process_disassoc(wdev, buf, len); | |
6ff57cf8 JB |
125 | } |
126 | EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt); | |
127 | ||
128 | void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr) | |
a58ce43f JB |
129 | { |
130 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
131 | struct wiphy *wiphy = wdev->wiphy; | |
f26cbf40 | 132 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
a58ce43f | 133 | |
4ee3e063 | 134 | trace_cfg80211_send_auth_timeout(dev, addr); |
a58ce43f JB |
135 | |
136 | nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL); | |
ceca7b71 | 137 | cfg80211_sme_auth_timeout(wdev); |
1965c853 | 138 | } |
6ff57cf8 | 139 | EXPORT_SYMBOL(cfg80211_auth_timeout); |
1965c853 | 140 | |
959867fa | 141 | void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss) |
1965c853 | 142 | { |
6829c878 JB |
143 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
144 | struct wiphy *wiphy = wdev->wiphy; | |
f26cbf40 | 145 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
19957bb3 | 146 | |
959867fa | 147 | trace_cfg80211_send_assoc_timeout(dev, bss->bssid); |
cb0b4beb | 148 | |
959867fa | 149 | nl80211_send_assoc_timeout(rdev, dev, bss->bssid, GFP_KERNEL); |
ceca7b71 | 150 | cfg80211_sme_assoc_timeout(wdev); |
959867fa | 151 | |
f1940c57 | 152 | cfg80211_unhold_bss(bss_from_pub(bss)); |
959867fa | 153 | cfg80211_put_bss(wiphy, bss); |
1965c853 | 154 | } |
6ff57cf8 JB |
155 | EXPORT_SYMBOL(cfg80211_assoc_timeout); |
156 | ||
e6f462df JB |
157 | void cfg80211_abandon_assoc(struct net_device *dev, struct cfg80211_bss *bss) |
158 | { | |
159 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
160 | struct wiphy *wiphy = wdev->wiphy; | |
161 | ||
162 | cfg80211_sme_abandon_assoc(wdev); | |
163 | ||
164 | cfg80211_unhold_bss(bss_from_pub(bss)); | |
165 | cfg80211_put_bss(wiphy, bss); | |
166 | } | |
167 | EXPORT_SYMBOL(cfg80211_abandon_assoc); | |
168 | ||
6ff57cf8 JB |
169 | void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) |
170 | { | |
171 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
172 | struct ieee80211_mgmt *mgmt = (void *)buf; | |
173 | ||
174 | ASSERT_WDEV_LOCK(wdev); | |
175 | ||
176 | trace_cfg80211_tx_mlme_mgmt(dev, buf, len); | |
177 | ||
178 | if (WARN_ON(len < 2)) | |
179 | return; | |
180 | ||
181 | if (ieee80211_is_deauth(mgmt->frame_control)) | |
ceca7b71 | 182 | cfg80211_process_deauth(wdev, buf, len); |
6ff57cf8 | 183 | else |
ceca7b71 | 184 | cfg80211_process_disassoc(wdev, buf, len); |
6ff57cf8 JB |
185 | } |
186 | EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt); | |
1965c853 | 187 | |
a3b8b056 JM |
188 | void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, |
189 | enum nl80211_key_type key_type, int key_id, | |
e6d6e342 | 190 | const u8 *tsc, gfp_t gfp) |
a3b8b056 JM |
191 | { |
192 | struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; | |
f26cbf40 | 193 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
3d23e349 | 194 | #ifdef CONFIG_CFG80211_WEXT |
f58d4ed9 | 195 | union iwreq_data wrqu; |
e6d6e342 | 196 | char *buf = kmalloc(128, gfp); |
f58d4ed9 JB |
197 | |
198 | if (buf) { | |
199 | sprintf(buf, "MLME-MICHAELMICFAILURE.indication(" | |
200 | "keyid=%d %scast addr=%pM)", key_id, | |
201 | key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni", | |
202 | addr); | |
203 | memset(&wrqu, 0, sizeof(wrqu)); | |
204 | wrqu.data.length = strlen(buf); | |
205 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
206 | kfree(buf); | |
207 | } | |
208 | #endif | |
209 | ||
4ee3e063 | 210 | trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc); |
e6d6e342 | 211 | nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp); |
a3b8b056 JM |
212 | } |
213 | EXPORT_SYMBOL(cfg80211_michael_mic_failure); | |
19957bb3 JB |
214 | |
215 | /* some MLME handling for userspace SME */ | |
91bf9b26 JB |
216 | int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
217 | struct net_device *dev, | |
218 | struct ieee80211_channel *chan, | |
219 | enum nl80211_auth_type auth_type, | |
220 | const u8 *bssid, | |
221 | const u8 *ssid, int ssid_len, | |
222 | const u8 *ie, int ie_len, | |
223 | const u8 *key, int key_len, int key_idx, | |
11b6b5a4 | 224 | const u8 *auth_data, int auth_data_len) |
19957bb3 JB |
225 | { |
226 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
7ade7036 JB |
227 | struct cfg80211_auth_request req = { |
228 | .ie = ie, | |
229 | .ie_len = ie_len, | |
11b6b5a4 JM |
230 | .auth_data = auth_data, |
231 | .auth_data_len = auth_data_len, | |
7ade7036 JB |
232 | .auth_type = auth_type, |
233 | .key = key, | |
234 | .key_len = key_len, | |
235 | .key_idx = key_idx, | |
236 | }; | |
95de817b | 237 | int err; |
19957bb3 | 238 | |
667503dd JB |
239 | ASSERT_WDEV_LOCK(wdev); |
240 | ||
fffd0934 | 241 | if (auth_type == NL80211_AUTHTYPE_SHARED_KEY) |
b6b5555b | 242 | if (!key || !key_len || key_idx < 0 || key_idx > 3) |
fffd0934 JB |
243 | return -EINVAL; |
244 | ||
0a9b5e17 | 245 | if (wdev->current_bss && |
ac422d3c | 246 | ether_addr_equal(bssid, wdev->current_bss->pub.bssid)) |
0a9b5e17 JB |
247 | return -EALREADY; |
248 | ||
19957bb3 | 249 | req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
6eb18137 DL |
250 | IEEE80211_BSS_TYPE_ESS, |
251 | IEEE80211_PRIVACY_ANY); | |
19957bb3 JB |
252 | if (!req.bss) |
253 | return -ENOENT; | |
254 | ||
e35e4d28 | 255 | err = rdev_auth(rdev, dev, &req); |
19957bb3 | 256 | |
5b112d3d | 257 | cfg80211_put_bss(&rdev->wiphy, req.bss); |
19957bb3 JB |
258 | return err; |
259 | } | |
260 | ||
7e7c8926 BG |
261 | /* Do a logical ht_capa &= ht_capa_mask. */ |
262 | void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa, | |
263 | const struct ieee80211_ht_cap *ht_capa_mask) | |
264 | { | |
265 | int i; | |
266 | u8 *p1, *p2; | |
267 | if (!ht_capa_mask) { | |
268 | memset(ht_capa, 0, sizeof(*ht_capa)); | |
269 | return; | |
270 | } | |
271 | ||
272 | p1 = (u8*)(ht_capa); | |
273 | p2 = (u8*)(ht_capa_mask); | |
274 | for (i = 0; i<sizeof(*ht_capa); i++) | |
275 | p1[i] &= p2[i]; | |
276 | } | |
277 | ||
ee2aca34 JB |
278 | /* Do a logical ht_capa &= ht_capa_mask. */ |
279 | void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa, | |
280 | const struct ieee80211_vht_cap *vht_capa_mask) | |
281 | { | |
282 | int i; | |
283 | u8 *p1, *p2; | |
284 | if (!vht_capa_mask) { | |
285 | memset(vht_capa, 0, sizeof(*vht_capa)); | |
286 | return; | |
287 | } | |
288 | ||
289 | p1 = (u8*)(vht_capa); | |
290 | p2 = (u8*)(vht_capa_mask); | |
291 | for (i = 0; i < sizeof(*vht_capa); i++) | |
292 | p1[i] &= p2[i]; | |
293 | } | |
294 | ||
91bf9b26 JB |
295 | int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
296 | struct net_device *dev, | |
297 | struct ieee80211_channel *chan, | |
298 | const u8 *bssid, | |
299 | const u8 *ssid, int ssid_len, | |
300 | struct cfg80211_assoc_request *req) | |
19957bb3 JB |
301 | { |
302 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b | 303 | int err; |
19957bb3 | 304 | |
667503dd JB |
305 | ASSERT_WDEV_LOCK(wdev); |
306 | ||
ceca7b71 JB |
307 | if (wdev->current_bss && |
308 | (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid, | |
309 | req->prev_bssid))) | |
19957bb3 JB |
310 | return -EALREADY; |
311 | ||
f62fab73 | 312 | cfg80211_oper_and_ht_capa(&req->ht_capa_mask, |
7e7c8926 | 313 | rdev->wiphy.ht_capa_mod_mask); |
f62fab73 | 314 | cfg80211_oper_and_vht_capa(&req->vht_capa_mask, |
ee2aca34 | 315 | rdev->wiphy.vht_capa_mod_mask); |
7e7c8926 | 316 | |
f62fab73 | 317 | req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
6eb18137 DL |
318 | IEEE80211_BSS_TYPE_ESS, |
319 | IEEE80211_PRIVACY_ANY); | |
ceca7b71 | 320 | if (!req->bss) |
19957bb3 JB |
321 | return -ENOENT; |
322 | ||
f62fab73 | 323 | err = rdev_assoc(rdev, dev, req); |
f1940c57 JB |
324 | if (!err) |
325 | cfg80211_hold_bss(bss_from_pub(req->bss)); | |
73de86a3 | 326 | else |
f62fab73 | 327 | cfg80211_put_bss(&rdev->wiphy, req->bss); |
19957bb3 | 328 | |
19957bb3 JB |
329 | return err; |
330 | } | |
331 | ||
91bf9b26 JB |
332 | int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, |
333 | struct net_device *dev, const u8 *bssid, | |
334 | const u8 *ie, int ie_len, u16 reason, | |
335 | bool local_state_change) | |
19957bb3 JB |
336 | { |
337 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b JB |
338 | struct cfg80211_deauth_request req = { |
339 | .bssid = bssid, | |
340 | .reason_code = reason, | |
341 | .ie = ie, | |
342 | .ie_len = ie_len, | |
6863255b | 343 | .local_state_change = local_state_change, |
95de817b | 344 | }; |
19957bb3 | 345 | |
667503dd JB |
346 | ASSERT_WDEV_LOCK(wdev); |
347 | ||
ceca7b71 JB |
348 | if (local_state_change && |
349 | (!wdev->current_bss || | |
350 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) | |
95de817b | 351 | return 0; |
19957bb3 | 352 | |
bd2522b1 AZ |
353 | if (ether_addr_equal(wdev->disconnect_bssid, bssid) || |
354 | (wdev->current_bss && | |
355 | ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) | |
356 | wdev->conn_owner_nlportid = 0; | |
357 | ||
e35e4d28 | 358 | return rdev_deauth(rdev, dev, &req); |
19957bb3 JB |
359 | } |
360 | ||
91bf9b26 JB |
361 | int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, |
362 | struct net_device *dev, const u8 *bssid, | |
363 | const u8 *ie, int ie_len, u16 reason, | |
364 | bool local_state_change) | |
19957bb3 JB |
365 | { |
366 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
7ade7036 JB |
367 | struct cfg80211_disassoc_request req = { |
368 | .reason_code = reason, | |
369 | .local_state_change = local_state_change, | |
370 | .ie = ie, | |
371 | .ie_len = ie_len, | |
372 | }; | |
ceca7b71 | 373 | int err; |
19957bb3 | 374 | |
667503dd JB |
375 | ASSERT_WDEV_LOCK(wdev); |
376 | ||
ceca7b71 | 377 | if (!wdev->current_bss) |
f9d6b402 JB |
378 | return -ENOTCONN; |
379 | ||
ac422d3c | 380 | if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) |
19957bb3 JB |
381 | req.bss = &wdev->current_bss->pub; |
382 | else | |
383 | return -ENOTCONN; | |
384 | ||
ceca7b71 JB |
385 | err = rdev_disassoc(rdev, dev, &req); |
386 | if (err) | |
387 | return err; | |
388 | ||
389 | /* driver should have reported the disassoc */ | |
390 | WARN_ON(wdev->current_bss); | |
391 | return 0; | |
667503dd JB |
392 | } |
393 | ||
19957bb3 JB |
394 | void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, |
395 | struct net_device *dev) | |
396 | { | |
397 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b | 398 | u8 bssid[ETH_ALEN]; |
19957bb3 | 399 | |
667503dd JB |
400 | ASSERT_WDEV_LOCK(wdev); |
401 | ||
19957bb3 JB |
402 | if (!rdev->ops->deauth) |
403 | return; | |
404 | ||
95de817b JB |
405 | if (!wdev->current_bss) |
406 | return; | |
19957bb3 | 407 | |
95de817b | 408 | memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN); |
ceca7b71 JB |
409 | cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, |
410 | WLAN_REASON_DEAUTH_LEAVING, false); | |
19957bb3 | 411 | } |
9588bbd5 | 412 | |
2e161f78 | 413 | struct cfg80211_mgmt_registration { |
026331c4 | 414 | struct list_head list; |
33d8783c | 415 | struct wireless_dev *wdev; |
026331c4 | 416 | |
15e47304 | 417 | u32 nlportid; |
026331c4 JM |
418 | |
419 | int match_len; | |
420 | ||
2e161f78 JB |
421 | __le16 frame_type; |
422 | ||
026331c4 JM |
423 | u8 match[]; |
424 | }; | |
425 | ||
33d8783c JB |
426 | static void |
427 | cfg80211_process_mlme_unregistrations(struct cfg80211_registered_device *rdev) | |
428 | { | |
429 | struct cfg80211_mgmt_registration *reg; | |
430 | ||
431 | ASSERT_RTNL(); | |
432 | ||
433 | spin_lock_bh(&rdev->mlme_unreg_lock); | |
434 | while ((reg = list_first_entry_or_null(&rdev->mlme_unreg, | |
435 | struct cfg80211_mgmt_registration, | |
436 | list))) { | |
437 | list_del(®->list); | |
438 | spin_unlock_bh(&rdev->mlme_unreg_lock); | |
439 | ||
440 | if (rdev->ops->mgmt_frame_register) { | |
441 | u16 frame_type = le16_to_cpu(reg->frame_type); | |
442 | ||
443 | rdev_mgmt_frame_register(rdev, reg->wdev, | |
444 | frame_type, false); | |
445 | } | |
446 | ||
447 | kfree(reg); | |
448 | ||
449 | spin_lock_bh(&rdev->mlme_unreg_lock); | |
450 | } | |
451 | spin_unlock_bh(&rdev->mlme_unreg_lock); | |
452 | } | |
453 | ||
454 | void cfg80211_mlme_unreg_wk(struct work_struct *wk) | |
455 | { | |
456 | struct cfg80211_registered_device *rdev; | |
457 | ||
458 | rdev = container_of(wk, struct cfg80211_registered_device, | |
459 | mlme_unreg_wk); | |
460 | ||
461 | rtnl_lock(); | |
462 | cfg80211_process_mlme_unregistrations(rdev); | |
463 | rtnl_unlock(); | |
464 | } | |
465 | ||
15e47304 | 466 | int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid, |
2e161f78 JB |
467 | u16 frame_type, const u8 *match_data, |
468 | int match_len) | |
026331c4 | 469 | { |
271733cf | 470 | struct wiphy *wiphy = wdev->wiphy; |
f26cbf40 | 471 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
2e161f78 | 472 | struct cfg80211_mgmt_registration *reg, *nreg; |
026331c4 | 473 | int err = 0; |
2e161f78 JB |
474 | u16 mgmt_type; |
475 | ||
476 | if (!wdev->wiphy->mgmt_stypes) | |
477 | return -EOPNOTSUPP; | |
478 | ||
479 | if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) | |
480 | return -EINVAL; | |
481 | ||
482 | if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) | |
483 | return -EINVAL; | |
484 | ||
485 | mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4; | |
486 | if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) | |
487 | return -EINVAL; | |
026331c4 JM |
488 | |
489 | nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL); | |
490 | if (!nreg) | |
491 | return -ENOMEM; | |
492 | ||
2e161f78 | 493 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 494 | |
2e161f78 | 495 | list_for_each_entry(reg, &wdev->mgmt_registrations, list) { |
026331c4 JM |
496 | int mlen = min(match_len, reg->match_len); |
497 | ||
2e161f78 JB |
498 | if (frame_type != le16_to_cpu(reg->frame_type)) |
499 | continue; | |
500 | ||
026331c4 JM |
501 | if (memcmp(reg->match, match_data, mlen) == 0) { |
502 | err = -EALREADY; | |
503 | break; | |
504 | } | |
505 | } | |
506 | ||
507 | if (err) { | |
508 | kfree(nreg); | |
509 | goto out; | |
510 | } | |
511 | ||
512 | memcpy(nreg->match, match_data, match_len); | |
513 | nreg->match_len = match_len; | |
15e47304 | 514 | nreg->nlportid = snd_portid; |
2e161f78 | 515 | nreg->frame_type = cpu_to_le16(frame_type); |
33d8783c | 516 | nreg->wdev = wdev; |
2e161f78 | 517 | list_add(&nreg->list, &wdev->mgmt_registrations); |
33d8783c JB |
518 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
519 | ||
520 | /* process all unregistrations to avoid driver confusion */ | |
521 | cfg80211_process_mlme_unregistrations(rdev); | |
026331c4 | 522 | |
271733cf | 523 | if (rdev->ops->mgmt_frame_register) |
e35e4d28 | 524 | rdev_mgmt_frame_register(rdev, wdev, frame_type, true); |
271733cf | 525 | |
33d8783c JB |
526 | return 0; |
527 | ||
026331c4 | 528 | out: |
2e161f78 | 529 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
271733cf | 530 | |
026331c4 JM |
531 | return err; |
532 | } | |
533 | ||
15e47304 | 534 | void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid) |
026331c4 | 535 | { |
271733cf | 536 | struct wiphy *wiphy = wdev->wiphy; |
f26cbf40 | 537 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
2e161f78 | 538 | struct cfg80211_mgmt_registration *reg, *tmp; |
026331c4 | 539 | |
2e161f78 | 540 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 541 | |
2e161f78 | 542 | list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { |
15e47304 | 543 | if (reg->nlportid != nlportid) |
271733cf JB |
544 | continue; |
545 | ||
271733cf | 546 | list_del(®->list); |
33d8783c JB |
547 | spin_lock(&rdev->mlme_unreg_lock); |
548 | list_add_tail(®->list, &rdev->mlme_unreg); | |
549 | spin_unlock(&rdev->mlme_unreg_lock); | |
550 | ||
551 | schedule_work(&rdev->mlme_unreg_wk); | |
026331c4 JM |
552 | } |
553 | ||
2e161f78 | 554 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
28946da7 | 555 | |
5de17984 AS |
556 | if (nlportid && rdev->crit_proto_nlportid == nlportid) { |
557 | rdev->crit_proto_nlportid = 0; | |
558 | rdev_crit_proto_stop(rdev, wdev); | |
559 | } | |
560 | ||
15e47304 EB |
561 | if (nlportid == wdev->ap_unexpected_nlportid) |
562 | wdev->ap_unexpected_nlportid = 0; | |
026331c4 JM |
563 | } |
564 | ||
2e161f78 | 565 | void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev) |
026331c4 | 566 | { |
33d8783c | 567 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
026331c4 | 568 | |
2e161f78 | 569 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
33d8783c JB |
570 | spin_lock(&rdev->mlme_unreg_lock); |
571 | list_splice_tail_init(&wdev->mgmt_registrations, &rdev->mlme_unreg); | |
572 | spin_unlock(&rdev->mlme_unreg_lock); | |
2e161f78 | 573 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
33d8783c JB |
574 | |
575 | cfg80211_process_mlme_unregistrations(rdev); | |
026331c4 JM |
576 | } |
577 | ||
2e161f78 | 578 | int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, |
71bbc994 | 579 | struct wireless_dev *wdev, |
b176e629 | 580 | struct cfg80211_mgmt_tx_params *params, u64 *cookie) |
026331c4 | 581 | { |
026331c4 | 582 | const struct ieee80211_mgmt *mgmt; |
2e161f78 JB |
583 | u16 stype; |
584 | ||
585 | if (!wdev->wiphy->mgmt_stypes) | |
586 | return -EOPNOTSUPP; | |
026331c4 | 587 | |
2e161f78 | 588 | if (!rdev->ops->mgmt_tx) |
026331c4 | 589 | return -EOPNOTSUPP; |
2e161f78 | 590 | |
b176e629 | 591 | if (params->len < 24 + 1) |
026331c4 JM |
592 | return -EINVAL; |
593 | ||
b176e629 | 594 | mgmt = (const struct ieee80211_mgmt *)params->buf; |
2e161f78 JB |
595 | |
596 | if (!ieee80211_is_mgmt(mgmt->frame_control)) | |
026331c4 | 597 | return -EINVAL; |
2e161f78 JB |
598 | |
599 | stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; | |
600 | if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4))) | |
601 | return -EINVAL; | |
602 | ||
603 | if (ieee80211_is_action(mgmt->frame_control) && | |
604 | mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { | |
663fcafd JB |
605 | int err = 0; |
606 | ||
fe100acd JB |
607 | wdev_lock(wdev); |
608 | ||
663fcafd JB |
609 | switch (wdev->iftype) { |
610 | case NL80211_IFTYPE_ADHOC: | |
611 | case NL80211_IFTYPE_STATION: | |
612 | case NL80211_IFTYPE_P2P_CLIENT: | |
613 | if (!wdev->current_bss) { | |
614 | err = -ENOTCONN; | |
615 | break; | |
616 | } | |
617 | ||
ac422d3c JP |
618 | if (!ether_addr_equal(wdev->current_bss->pub.bssid, |
619 | mgmt->bssid)) { | |
663fcafd JB |
620 | err = -ENOTCONN; |
621 | break; | |
622 | } | |
623 | ||
624 | /* | |
625 | * check for IBSS DA must be done by driver as | |
626 | * cfg80211 doesn't track the stations | |
627 | */ | |
628 | if (wdev->iftype == NL80211_IFTYPE_ADHOC) | |
629 | break; | |
fe100acd | 630 | |
663fcafd | 631 | /* for station, check that DA is the AP */ |
ac422d3c JP |
632 | if (!ether_addr_equal(wdev->current_bss->pub.bssid, |
633 | mgmt->da)) { | |
663fcafd JB |
634 | err = -ENOTCONN; |
635 | break; | |
636 | } | |
637 | break; | |
638 | case NL80211_IFTYPE_AP: | |
639 | case NL80211_IFTYPE_P2P_GO: | |
640 | case NL80211_IFTYPE_AP_VLAN: | |
98104fde | 641 | if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev))) |
663fcafd JB |
642 | err = -EINVAL; |
643 | break; | |
0778a6a3 | 644 | case NL80211_IFTYPE_MESH_POINT: |
ac422d3c | 645 | if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) { |
0778a6a3 JC |
646 | err = -EINVAL; |
647 | break; | |
648 | } | |
649 | /* | |
650 | * check for mesh DA must be done by driver as | |
651 | * cfg80211 doesn't track the stations | |
652 | */ | |
653 | break; | |
98104fde JB |
654 | case NL80211_IFTYPE_P2P_DEVICE: |
655 | /* | |
656 | * fall through, P2P device only supports | |
657 | * public action frames | |
658 | */ | |
cb3b7d87 | 659 | case NL80211_IFTYPE_NAN: |
663fcafd JB |
660 | default: |
661 | err = -EOPNOTSUPP; | |
662 | break; | |
663 | } | |
fe100acd | 664 | wdev_unlock(wdev); |
663fcafd JB |
665 | |
666 | if (err) | |
667 | return err; | |
026331c4 JM |
668 | } |
669 | ||
ab5bb2d5 | 670 | if (!ether_addr_equal(mgmt->sa, wdev_address(wdev))) { |
671 | /* Allow random TA to be used with Public Action frames if the | |
672 | * driver has indicated support for this. Otherwise, only allow | |
673 | * the local address to be used. | |
674 | */ | |
675 | if (!ieee80211_is_action(mgmt->frame_control) || | |
676 | mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) | |
677 | return -EINVAL; | |
678 | if (!wdev->current_bss && | |
679 | !wiphy_ext_feature_isset( | |
680 | &rdev->wiphy, | |
681 | NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA)) | |
682 | return -EINVAL; | |
683 | if (wdev->current_bss && | |
684 | !wiphy_ext_feature_isset( | |
685 | &rdev->wiphy, | |
686 | NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA_CONNECTED)) | |
687 | return -EINVAL; | |
688 | } | |
026331c4 JM |
689 | |
690 | /* Transmit the Action frame as requested by user space */ | |
b176e629 | 691 | return rdev_mgmt_tx(rdev, wdev, params, cookie); |
026331c4 JM |
692 | } |
693 | ||
71bbc994 | 694 | bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_mbm, |
970fdfa8 | 695 | const u8 *buf, size_t len, u32 flags) |
026331c4 | 696 | { |
026331c4 | 697 | struct wiphy *wiphy = wdev->wiphy; |
f26cbf40 | 698 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
2e161f78 JB |
699 | struct cfg80211_mgmt_registration *reg; |
700 | const struct ieee80211_txrx_stypes *stypes = | |
701 | &wiphy->mgmt_stypes[wdev->iftype]; | |
702 | struct ieee80211_mgmt *mgmt = (void *)buf; | |
703 | const u8 *data; | |
704 | int data_len; | |
026331c4 | 705 | bool result = false; |
2e161f78 JB |
706 | __le16 ftype = mgmt->frame_control & |
707 | cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE); | |
708 | u16 stype; | |
026331c4 | 709 | |
4ee3e063 | 710 | trace_cfg80211_rx_mgmt(wdev, freq, sig_mbm); |
2e161f78 | 711 | stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4; |
026331c4 | 712 | |
4ee3e063 BL |
713 | if (!(stypes->rx & BIT(stype))) { |
714 | trace_cfg80211_return_bool(false); | |
2e161f78 | 715 | return false; |
4ee3e063 | 716 | } |
026331c4 | 717 | |
2e161f78 JB |
718 | data = buf + ieee80211_hdrlen(mgmt->frame_control); |
719 | data_len = len - ieee80211_hdrlen(mgmt->frame_control); | |
720 | ||
721 | spin_lock_bh(&wdev->mgmt_registrations_lock); | |
722 | ||
723 | list_for_each_entry(reg, &wdev->mgmt_registrations, list) { | |
724 | if (reg->frame_type != ftype) | |
725 | continue; | |
026331c4 | 726 | |
2e161f78 | 727 | if (reg->match_len > data_len) |
026331c4 JM |
728 | continue; |
729 | ||
2e161f78 | 730 | if (memcmp(reg->match, data, reg->match_len)) |
026331c4 JM |
731 | continue; |
732 | ||
733 | /* found match! */ | |
734 | ||
735 | /* Indicate the received Action frame to user space */ | |
15e47304 | 736 | if (nl80211_send_mgmt(rdev, wdev, reg->nlportid, |
804483e9 | 737 | freq, sig_mbm, |
970fdfa8 | 738 | buf, len, flags, GFP_ATOMIC)) |
026331c4 JM |
739 | continue; |
740 | ||
741 | result = true; | |
742 | break; | |
743 | } | |
744 | ||
2e161f78 | 745 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 746 | |
4ee3e063 | 747 | trace_cfg80211_return_bool(result); |
026331c4 JM |
748 | return result; |
749 | } | |
2e161f78 | 750 | EXPORT_SYMBOL(cfg80211_rx_mgmt); |
026331c4 | 751 | |
b35a51c7 VT |
752 | void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev) |
753 | { | |
754 | cancel_delayed_work(&rdev->dfs_update_channels_wk); | |
755 | queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, 0); | |
756 | } | |
757 | ||
04f39047 SW |
758 | void cfg80211_dfs_channels_update_work(struct work_struct *work) |
759 | { | |
a85a7e28 | 760 | struct delayed_work *delayed_work = to_delayed_work(work); |
04f39047 SW |
761 | struct cfg80211_registered_device *rdev; |
762 | struct cfg80211_chan_def chandef; | |
763 | struct ieee80211_supported_band *sband; | |
764 | struct ieee80211_channel *c; | |
765 | struct wiphy *wiphy; | |
766 | bool check_again = false; | |
767 | unsigned long timeout, next_time = 0; | |
b35a51c7 VT |
768 | unsigned long time_dfs_update; |
769 | enum nl80211_radar_event radar_event; | |
04f39047 SW |
770 | int bandid, i; |
771 | ||
04f39047 SW |
772 | rdev = container_of(delayed_work, struct cfg80211_registered_device, |
773 | dfs_update_channels_wk); | |
774 | wiphy = &rdev->wiphy; | |
775 | ||
5fe231e8 | 776 | rtnl_lock(); |
57fbcce3 | 777 | for (bandid = 0; bandid < NUM_NL80211_BANDS; bandid++) { |
04f39047 SW |
778 | sband = wiphy->bands[bandid]; |
779 | if (!sband) | |
780 | continue; | |
781 | ||
782 | for (i = 0; i < sband->n_channels; i++) { | |
783 | c = &sband->channels[i]; | |
784 | ||
b35a51c7 VT |
785 | if (!(c->flags & IEEE80211_CHAN_RADAR)) |
786 | continue; | |
787 | ||
788 | if (c->dfs_state != NL80211_DFS_UNAVAILABLE && | |
789 | c->dfs_state != NL80211_DFS_AVAILABLE) | |
04f39047 SW |
790 | continue; |
791 | ||
b35a51c7 VT |
792 | if (c->dfs_state == NL80211_DFS_UNAVAILABLE) { |
793 | time_dfs_update = IEEE80211_DFS_MIN_NOP_TIME_MS; | |
794 | radar_event = NL80211_RADAR_NOP_FINISHED; | |
795 | } else { | |
796 | if (regulatory_pre_cac_allowed(wiphy) || | |
797 | cfg80211_any_wiphy_oper_chan(wiphy, c)) | |
798 | continue; | |
799 | ||
800 | time_dfs_update = REG_PRE_CAC_EXPIRY_GRACE_MS; | |
801 | radar_event = NL80211_RADAR_PRE_CAC_EXPIRED; | |
802 | } | |
803 | ||
804 | timeout = c->dfs_state_entered + | |
805 | msecs_to_jiffies(time_dfs_update); | |
04f39047 SW |
806 | |
807 | if (time_after_eq(jiffies, timeout)) { | |
808 | c->dfs_state = NL80211_DFS_USABLE; | |
bbe09bbc MK |
809 | c->dfs_state_entered = jiffies; |
810 | ||
04f39047 SW |
811 | cfg80211_chandef_create(&chandef, c, |
812 | NL80211_CHAN_NO_HT); | |
813 | ||
814 | nl80211_radar_notify(rdev, &chandef, | |
b35a51c7 VT |
815 | radar_event, NULL, |
816 | GFP_ATOMIC); | |
89766727 VT |
817 | |
818 | regulatory_propagate_dfs_state(wiphy, &chandef, | |
819 | c->dfs_state, | |
820 | radar_event); | |
04f39047 SW |
821 | continue; |
822 | } | |
823 | ||
824 | if (!check_again) | |
825 | next_time = timeout - jiffies; | |
826 | else | |
827 | next_time = min(next_time, timeout - jiffies); | |
828 | check_again = true; | |
829 | } | |
830 | } | |
5fe231e8 | 831 | rtnl_unlock(); |
04f39047 SW |
832 | |
833 | /* reschedule if there are other channels waiting to be cleared again */ | |
834 | if (check_again) | |
835 | queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, | |
836 | next_time); | |
837 | } | |
838 | ||
839 | ||
840 | void cfg80211_radar_event(struct wiphy *wiphy, | |
841 | struct cfg80211_chan_def *chandef, | |
842 | gfp_t gfp) | |
843 | { | |
f26cbf40 | 844 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
04f39047 SW |
845 | |
846 | trace_cfg80211_radar_event(wiphy, chandef); | |
847 | ||
848 | /* only set the chandef supplied channel to unavailable, in | |
849 | * case the radar is detected on only one of multiple channels | |
850 | * spanned by the chandef. | |
851 | */ | |
852 | cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE); | |
853 | ||
b35a51c7 | 854 | cfg80211_sched_dfs_chan_update(rdev); |
04f39047 SW |
855 | |
856 | nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp); | |
89766727 VT |
857 | |
858 | memcpy(&rdev->radar_chandef, chandef, sizeof(struct cfg80211_chan_def)); | |
859 | queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk); | |
04f39047 SW |
860 | } |
861 | EXPORT_SYMBOL(cfg80211_radar_event); | |
862 | ||
863 | void cfg80211_cac_event(struct net_device *netdev, | |
d2859df5 | 864 | const struct cfg80211_chan_def *chandef, |
04f39047 SW |
865 | enum nl80211_radar_event event, gfp_t gfp) |
866 | { | |
867 | struct wireless_dev *wdev = netdev->ieee80211_ptr; | |
868 | struct wiphy *wiphy = wdev->wiphy; | |
f26cbf40 | 869 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
04f39047 SW |
870 | unsigned long timeout; |
871 | ||
872 | trace_cfg80211_cac_event(netdev, event); | |
873 | ||
874 | if (WARN_ON(!wdev->cac_started)) | |
875 | return; | |
876 | ||
9e0e2961 | 877 | if (WARN_ON(!wdev->chandef.chan)) |
04f39047 SW |
878 | return; |
879 | ||
04f39047 SW |
880 | switch (event) { |
881 | case NL80211_RADAR_CAC_FINISHED: | |
882 | timeout = wdev->cac_start_time + | |
31559f35 | 883 | msecs_to_jiffies(wdev->cac_time_ms); |
04f39047 | 884 | WARN_ON(!time_after_eq(jiffies, timeout)); |
d2859df5 | 885 | cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE); |
89766727 VT |
886 | memcpy(&rdev->cac_done_chandef, chandef, |
887 | sizeof(struct cfg80211_chan_def)); | |
888 | queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk); | |
b35a51c7 | 889 | cfg80211_sched_dfs_chan_update(rdev); |
04f39047 SW |
890 | break; |
891 | case NL80211_RADAR_CAC_ABORTED: | |
892 | break; | |
893 | default: | |
894 | WARN_ON(1); | |
895 | return; | |
896 | } | |
897 | wdev->cac_started = false; | |
898 | ||
d2859df5 | 899 | nl80211_radar_notify(rdev, chandef, event, netdev, gfp); |
04f39047 SW |
900 | } |
901 | EXPORT_SYMBOL(cfg80211_cac_event); |