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Commit | Line | Data |
---|---|---|
6039f6d2 JM |
1 | /* |
2 | * cfg80211 MLME SAP interface | |
3 | * | |
4 | * Copyright (c) 2009, Jouni Malinen <j@w1.fi> | |
5 | */ | |
6 | ||
7 | #include <linux/kernel.h> | |
8 | #include <linux/module.h> | |
c6fb08aa | 9 | #include <linux/etherdevice.h> |
6039f6d2 JM |
10 | #include <linux/netdevice.h> |
11 | #include <linux/nl80211.h> | |
5a0e3ad6 | 12 | #include <linux/slab.h> |
a9a11622 | 13 | #include <linux/wireless.h> |
6039f6d2 | 14 | #include <net/cfg80211.h> |
a9a11622 | 15 | #include <net/iw_handler.h> |
6039f6d2 JM |
16 | #include "core.h" |
17 | #include "nl80211.h" | |
e35e4d28 HG |
18 | #include "rdev-ops.h" |
19 | ||
6039f6d2 | 20 | |
6ff57cf8 | 21 | void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss, |
95de817b | 22 | const u8 *buf, size_t len) |
6039f6d2 | 23 | { |
6829c878 JB |
24 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
25 | struct wiphy *wiphy = wdev->wiphy; | |
6039f6d2 | 26 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
6829c878 JB |
27 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
28 | u8 *ie = mgmt->u.assoc_resp.variable; | |
95de817b | 29 | int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable); |
ceca7b71 | 30 | u16 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); |
6829c878 | 31 | |
4ee3e063 | 32 | trace_cfg80211_send_rx_assoc(dev, bss); |
cb0b4beb | 33 | |
f401a6f7 JB |
34 | /* |
35 | * This is a bit of a hack, we don't notify userspace of | |
36 | * a (re-)association reply if we tried to send a reassoc | |
37 | * and got a reject -- we only try again with an assoc | |
38 | * frame instead of reassoc. | |
39 | */ | |
ceca7b71 | 40 | if (cfg80211_sme_rx_assoc_resp(wdev, status_code)) { |
5b112d3d | 41 | cfg80211_put_bss(wiphy, bss); |
8d61ffa5 | 42 | return; |
95de817b | 43 | } |
f401a6f7 | 44 | |
cb0b4beb | 45 | nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL); |
ceca7b71 | 46 | /* update current_bss etc., consumes the bss reference */ |
df7fc0f9 JB |
47 | __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs, |
48 | status_code, | |
95de817b | 49 | status_code == WLAN_STATUS_SUCCESS, bss); |
6039f6d2 | 50 | } |
6ff57cf8 | 51 | EXPORT_SYMBOL(cfg80211_rx_assoc_resp); |
6039f6d2 | 52 | |
ceca7b71 JB |
53 | static void cfg80211_process_auth(struct wireless_dev *wdev, |
54 | const u8 *buf, size_t len) | |
55 | { | |
56 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
57 | ||
58 | nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL); | |
59 | cfg80211_sme_rx_auth(wdev, buf, len); | |
60 | } | |
61 | ||
62 | static void cfg80211_process_deauth(struct wireless_dev *wdev, | |
6ff57cf8 | 63 | const u8 *buf, size_t len) |
6039f6d2 | 64 | { |
ceca7b71 | 65 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 | 66 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
19957bb3 | 67 | const u8 *bssid = mgmt->bssid; |
ceca7b71 JB |
68 | u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
69 | bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); | |
6829c878 | 70 | |
ceca7b71 | 71 | nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL); |
19957bb3 | 72 | |
ceca7b71 JB |
73 | if (!wdev->current_bss || |
74 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) | |
75 | return; | |
6829c878 | 76 | |
ceca7b71 JB |
77 | __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); |
78 | cfg80211_sme_deauth(wdev); | |
667503dd | 79 | } |
6039f6d2 | 80 | |
ceca7b71 | 81 | static void cfg80211_process_disassoc(struct wireless_dev *wdev, |
6ff57cf8 | 82 | const u8 *buf, size_t len) |
6039f6d2 | 83 | { |
ceca7b71 | 84 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 | 85 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
19957bb3 | 86 | const u8 *bssid = mgmt->bssid; |
ceca7b71 JB |
87 | u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
88 | bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); | |
6829c878 | 89 | |
ceca7b71 | 90 | nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL); |
a3b8b056 | 91 | |
ceca7b71 JB |
92 | if (WARN_ON(!wdev->current_bss || |
93 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) | |
596a07c1 | 94 | return; |
6829c878 | 95 | |
ceca7b71 JB |
96 | __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); |
97 | cfg80211_sme_disassoc(wdev); | |
667503dd | 98 | } |
1965c853 | 99 | |
6ff57cf8 JB |
100 | void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) |
101 | { | |
102 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
6ff57cf8 JB |
103 | struct ieee80211_mgmt *mgmt = (void *)buf; |
104 | ||
105 | ASSERT_WDEV_LOCK(wdev); | |
106 | ||
107 | trace_cfg80211_rx_mlme_mgmt(dev, buf, len); | |
108 | ||
109 | if (WARN_ON(len < 2)) | |
110 | return; | |
111 | ||
ceca7b71 JB |
112 | if (ieee80211_is_auth(mgmt->frame_control)) |
113 | cfg80211_process_auth(wdev, buf, len); | |
114 | else if (ieee80211_is_deauth(mgmt->frame_control)) | |
115 | cfg80211_process_deauth(wdev, buf, len); | |
116 | else if (ieee80211_is_disassoc(mgmt->frame_control)) | |
117 | cfg80211_process_disassoc(wdev, buf, len); | |
6ff57cf8 JB |
118 | } |
119 | EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt); | |
120 | ||
121 | void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr) | |
a58ce43f JB |
122 | { |
123 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
124 | struct wiphy *wiphy = wdev->wiphy; | |
125 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
126 | ||
4ee3e063 | 127 | trace_cfg80211_send_auth_timeout(dev, addr); |
a58ce43f JB |
128 | |
129 | nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL); | |
ceca7b71 | 130 | cfg80211_sme_auth_timeout(wdev); |
1965c853 | 131 | } |
6ff57cf8 | 132 | EXPORT_SYMBOL(cfg80211_auth_timeout); |
1965c853 | 133 | |
6ff57cf8 | 134 | void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr) |
1965c853 | 135 | { |
6829c878 JB |
136 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
137 | struct wiphy *wiphy = wdev->wiphy; | |
1965c853 | 138 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
19957bb3 | 139 | |
4ee3e063 | 140 | trace_cfg80211_send_assoc_timeout(dev, addr); |
cb0b4beb JB |
141 | |
142 | nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL); | |
ceca7b71 | 143 | cfg80211_sme_assoc_timeout(wdev); |
1965c853 | 144 | } |
6ff57cf8 JB |
145 | EXPORT_SYMBOL(cfg80211_assoc_timeout); |
146 | ||
147 | void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) | |
148 | { | |
149 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
150 | struct ieee80211_mgmt *mgmt = (void *)buf; | |
151 | ||
152 | ASSERT_WDEV_LOCK(wdev); | |
153 | ||
154 | trace_cfg80211_tx_mlme_mgmt(dev, buf, len); | |
155 | ||
156 | if (WARN_ON(len < 2)) | |
157 | return; | |
158 | ||
159 | if (ieee80211_is_deauth(mgmt->frame_control)) | |
ceca7b71 | 160 | cfg80211_process_deauth(wdev, buf, len); |
6ff57cf8 | 161 | else |
ceca7b71 | 162 | cfg80211_process_disassoc(wdev, buf, len); |
6ff57cf8 JB |
163 | } |
164 | EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt); | |
1965c853 | 165 | |
a3b8b056 JM |
166 | void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, |
167 | enum nl80211_key_type key_type, int key_id, | |
e6d6e342 | 168 | const u8 *tsc, gfp_t gfp) |
a3b8b056 JM |
169 | { |
170 | struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; | |
171 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
3d23e349 | 172 | #ifdef CONFIG_CFG80211_WEXT |
f58d4ed9 | 173 | union iwreq_data wrqu; |
e6d6e342 | 174 | char *buf = kmalloc(128, gfp); |
f58d4ed9 JB |
175 | |
176 | if (buf) { | |
177 | sprintf(buf, "MLME-MICHAELMICFAILURE.indication(" | |
178 | "keyid=%d %scast addr=%pM)", key_id, | |
179 | key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni", | |
180 | addr); | |
181 | memset(&wrqu, 0, sizeof(wrqu)); | |
182 | wrqu.data.length = strlen(buf); | |
183 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
184 | kfree(buf); | |
185 | } | |
186 | #endif | |
187 | ||
4ee3e063 | 188 | trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc); |
e6d6e342 | 189 | nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp); |
a3b8b056 JM |
190 | } |
191 | EXPORT_SYMBOL(cfg80211_michael_mic_failure); | |
19957bb3 JB |
192 | |
193 | /* some MLME handling for userspace SME */ | |
91bf9b26 JB |
194 | int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
195 | struct net_device *dev, | |
196 | struct ieee80211_channel *chan, | |
197 | enum nl80211_auth_type auth_type, | |
198 | const u8 *bssid, | |
199 | const u8 *ssid, int ssid_len, | |
200 | const u8 *ie, int ie_len, | |
201 | const u8 *key, int key_len, int key_idx, | |
202 | const u8 *sae_data, int sae_data_len) | |
19957bb3 JB |
203 | { |
204 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
7ade7036 JB |
205 | struct cfg80211_auth_request req = { |
206 | .ie = ie, | |
207 | .ie_len = ie_len, | |
208 | .sae_data = sae_data, | |
209 | .sae_data_len = sae_data_len, | |
210 | .auth_type = auth_type, | |
211 | .key = key, | |
212 | .key_len = key_len, | |
213 | .key_idx = key_idx, | |
214 | }; | |
95de817b | 215 | int err; |
19957bb3 | 216 | |
667503dd JB |
217 | ASSERT_WDEV_LOCK(wdev); |
218 | ||
fffd0934 JB |
219 | if (auth_type == NL80211_AUTHTYPE_SHARED_KEY) |
220 | if (!key || !key_len || key_idx < 0 || key_idx > 4) | |
221 | return -EINVAL; | |
222 | ||
0a9b5e17 | 223 | if (wdev->current_bss && |
ac422d3c | 224 | ether_addr_equal(bssid, wdev->current_bss->pub.bssid)) |
0a9b5e17 JB |
225 | return -EALREADY; |
226 | ||
19957bb3 JB |
227 | req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
228 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
229 | if (!req.bss) | |
230 | return -ENOENT; | |
231 | ||
e4e32459 MK |
232 | err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel, |
233 | CHAN_MODE_SHARED); | |
234 | if (err) | |
235 | goto out; | |
236 | ||
e35e4d28 | 237 | err = rdev_auth(rdev, dev, &req); |
19957bb3 | 238 | |
e4e32459 | 239 | out: |
5b112d3d | 240 | cfg80211_put_bss(&rdev->wiphy, req.bss); |
19957bb3 JB |
241 | return err; |
242 | } | |
243 | ||
7e7c8926 BG |
244 | /* Do a logical ht_capa &= ht_capa_mask. */ |
245 | void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa, | |
246 | const struct ieee80211_ht_cap *ht_capa_mask) | |
247 | { | |
248 | int i; | |
249 | u8 *p1, *p2; | |
250 | if (!ht_capa_mask) { | |
251 | memset(ht_capa, 0, sizeof(*ht_capa)); | |
252 | return; | |
253 | } | |
254 | ||
255 | p1 = (u8*)(ht_capa); | |
256 | p2 = (u8*)(ht_capa_mask); | |
257 | for (i = 0; i<sizeof(*ht_capa); i++) | |
258 | p1[i] &= p2[i]; | |
259 | } | |
260 | ||
ee2aca34 JB |
261 | /* Do a logical ht_capa &= ht_capa_mask. */ |
262 | void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa, | |
263 | const struct ieee80211_vht_cap *vht_capa_mask) | |
264 | { | |
265 | int i; | |
266 | u8 *p1, *p2; | |
267 | if (!vht_capa_mask) { | |
268 | memset(vht_capa, 0, sizeof(*vht_capa)); | |
269 | return; | |
270 | } | |
271 | ||
272 | p1 = (u8*)(vht_capa); | |
273 | p2 = (u8*)(vht_capa_mask); | |
274 | for (i = 0; i < sizeof(*vht_capa); i++) | |
275 | p1[i] &= p2[i]; | |
276 | } | |
277 | ||
91bf9b26 JB |
278 | int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
279 | struct net_device *dev, | |
280 | struct ieee80211_channel *chan, | |
281 | const u8 *bssid, | |
282 | const u8 *ssid, int ssid_len, | |
283 | struct cfg80211_assoc_request *req) | |
19957bb3 JB |
284 | { |
285 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b | 286 | int err; |
19957bb3 | 287 | |
667503dd JB |
288 | ASSERT_WDEV_LOCK(wdev); |
289 | ||
ceca7b71 JB |
290 | if (wdev->current_bss && |
291 | (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid, | |
292 | req->prev_bssid))) | |
19957bb3 JB |
293 | return -EALREADY; |
294 | ||
f62fab73 | 295 | cfg80211_oper_and_ht_capa(&req->ht_capa_mask, |
7e7c8926 | 296 | rdev->wiphy.ht_capa_mod_mask); |
f62fab73 | 297 | cfg80211_oper_and_vht_capa(&req->vht_capa_mask, |
ee2aca34 | 298 | rdev->wiphy.vht_capa_mod_mask); |
7e7c8926 | 299 | |
f62fab73 JB |
300 | req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
301 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
ceca7b71 | 302 | if (!req->bss) |
19957bb3 JB |
303 | return -ENOENT; |
304 | ||
f62fab73 | 305 | err = cfg80211_can_use_chan(rdev, wdev, chan, CHAN_MODE_SHARED); |
e4e32459 MK |
306 | if (err) |
307 | goto out; | |
308 | ||
f62fab73 | 309 | err = rdev_assoc(rdev, dev, req); |
19957bb3 | 310 | |
e4e32459 | 311 | out: |
ceca7b71 | 312 | if (err) |
f62fab73 | 313 | cfg80211_put_bss(&rdev->wiphy, req->bss); |
19957bb3 | 314 | |
19957bb3 JB |
315 | return err; |
316 | } | |
317 | ||
91bf9b26 JB |
318 | int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, |
319 | struct net_device *dev, const u8 *bssid, | |
320 | const u8 *ie, int ie_len, u16 reason, | |
321 | bool local_state_change) | |
19957bb3 JB |
322 | { |
323 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b JB |
324 | struct cfg80211_deauth_request req = { |
325 | .bssid = bssid, | |
326 | .reason_code = reason, | |
327 | .ie = ie, | |
328 | .ie_len = ie_len, | |
6863255b | 329 | .local_state_change = local_state_change, |
95de817b | 330 | }; |
19957bb3 | 331 | |
667503dd JB |
332 | ASSERT_WDEV_LOCK(wdev); |
333 | ||
ceca7b71 JB |
334 | if (local_state_change && |
335 | (!wdev->current_bss || | |
336 | !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) | |
95de817b | 337 | return 0; |
19957bb3 | 338 | |
e35e4d28 | 339 | return rdev_deauth(rdev, dev, &req); |
19957bb3 JB |
340 | } |
341 | ||
91bf9b26 JB |
342 | int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, |
343 | struct net_device *dev, const u8 *bssid, | |
344 | const u8 *ie, int ie_len, u16 reason, | |
345 | bool local_state_change) | |
19957bb3 JB |
346 | { |
347 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
7ade7036 JB |
348 | struct cfg80211_disassoc_request req = { |
349 | .reason_code = reason, | |
350 | .local_state_change = local_state_change, | |
351 | .ie = ie, | |
352 | .ie_len = ie_len, | |
353 | }; | |
ceca7b71 | 354 | int err; |
19957bb3 | 355 | |
667503dd JB |
356 | ASSERT_WDEV_LOCK(wdev); |
357 | ||
ceca7b71 | 358 | if (!wdev->current_bss) |
f9d6b402 JB |
359 | return -ENOTCONN; |
360 | ||
ac422d3c | 361 | if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) |
19957bb3 JB |
362 | req.bss = &wdev->current_bss->pub; |
363 | else | |
364 | return -ENOTCONN; | |
365 | ||
ceca7b71 JB |
366 | err = rdev_disassoc(rdev, dev, &req); |
367 | if (err) | |
368 | return err; | |
369 | ||
370 | /* driver should have reported the disassoc */ | |
371 | WARN_ON(wdev->current_bss); | |
372 | return 0; | |
667503dd JB |
373 | } |
374 | ||
19957bb3 JB |
375 | void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, |
376 | struct net_device *dev) | |
377 | { | |
378 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
95de817b | 379 | u8 bssid[ETH_ALEN]; |
19957bb3 | 380 | |
667503dd JB |
381 | ASSERT_WDEV_LOCK(wdev); |
382 | ||
19957bb3 JB |
383 | if (!rdev->ops->deauth) |
384 | return; | |
385 | ||
95de817b JB |
386 | if (!wdev->current_bss) |
387 | return; | |
19957bb3 | 388 | |
95de817b | 389 | memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN); |
ceca7b71 JB |
390 | cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, |
391 | WLAN_REASON_DEAUTH_LEAVING, false); | |
19957bb3 | 392 | } |
9588bbd5 | 393 | |
2e161f78 | 394 | struct cfg80211_mgmt_registration { |
026331c4 JM |
395 | struct list_head list; |
396 | ||
15e47304 | 397 | u32 nlportid; |
026331c4 JM |
398 | |
399 | int match_len; | |
400 | ||
2e161f78 JB |
401 | __le16 frame_type; |
402 | ||
026331c4 JM |
403 | u8 match[]; |
404 | }; | |
405 | ||
15e47304 | 406 | int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid, |
2e161f78 JB |
407 | u16 frame_type, const u8 *match_data, |
408 | int match_len) | |
026331c4 | 409 | { |
271733cf JB |
410 | struct wiphy *wiphy = wdev->wiphy; |
411 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
2e161f78 | 412 | struct cfg80211_mgmt_registration *reg, *nreg; |
026331c4 | 413 | int err = 0; |
2e161f78 JB |
414 | u16 mgmt_type; |
415 | ||
416 | if (!wdev->wiphy->mgmt_stypes) | |
417 | return -EOPNOTSUPP; | |
418 | ||
419 | if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) | |
420 | return -EINVAL; | |
421 | ||
422 | if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) | |
423 | return -EINVAL; | |
424 | ||
425 | mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4; | |
426 | if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) | |
427 | return -EINVAL; | |
026331c4 JM |
428 | |
429 | nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL); | |
430 | if (!nreg) | |
431 | return -ENOMEM; | |
432 | ||
2e161f78 | 433 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 434 | |
2e161f78 | 435 | list_for_each_entry(reg, &wdev->mgmt_registrations, list) { |
026331c4 JM |
436 | int mlen = min(match_len, reg->match_len); |
437 | ||
2e161f78 JB |
438 | if (frame_type != le16_to_cpu(reg->frame_type)) |
439 | continue; | |
440 | ||
026331c4 JM |
441 | if (memcmp(reg->match, match_data, mlen) == 0) { |
442 | err = -EALREADY; | |
443 | break; | |
444 | } | |
445 | } | |
446 | ||
447 | if (err) { | |
448 | kfree(nreg); | |
449 | goto out; | |
450 | } | |
451 | ||
452 | memcpy(nreg->match, match_data, match_len); | |
453 | nreg->match_len = match_len; | |
15e47304 | 454 | nreg->nlportid = snd_portid; |
2e161f78 JB |
455 | nreg->frame_type = cpu_to_le16(frame_type); |
456 | list_add(&nreg->list, &wdev->mgmt_registrations); | |
026331c4 | 457 | |
271733cf | 458 | if (rdev->ops->mgmt_frame_register) |
e35e4d28 | 459 | rdev_mgmt_frame_register(rdev, wdev, frame_type, true); |
271733cf | 460 | |
026331c4 | 461 | out: |
2e161f78 | 462 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
271733cf | 463 | |
026331c4 JM |
464 | return err; |
465 | } | |
466 | ||
15e47304 | 467 | void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid) |
026331c4 | 468 | { |
271733cf JB |
469 | struct wiphy *wiphy = wdev->wiphy; |
470 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
2e161f78 | 471 | struct cfg80211_mgmt_registration *reg, *tmp; |
026331c4 | 472 | |
2e161f78 | 473 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 474 | |
2e161f78 | 475 | list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { |
15e47304 | 476 | if (reg->nlportid != nlportid) |
271733cf JB |
477 | continue; |
478 | ||
479 | if (rdev->ops->mgmt_frame_register) { | |
480 | u16 frame_type = le16_to_cpu(reg->frame_type); | |
481 | ||
e35e4d28 HG |
482 | rdev_mgmt_frame_register(rdev, wdev, |
483 | frame_type, false); | |
026331c4 | 484 | } |
271733cf JB |
485 | |
486 | list_del(®->list); | |
487 | kfree(reg); | |
026331c4 JM |
488 | } |
489 | ||
2e161f78 | 490 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
28946da7 | 491 | |
5de17984 AS |
492 | if (nlportid && rdev->crit_proto_nlportid == nlportid) { |
493 | rdev->crit_proto_nlportid = 0; | |
494 | rdev_crit_proto_stop(rdev, wdev); | |
495 | } | |
496 | ||
15e47304 EB |
497 | if (nlportid == wdev->ap_unexpected_nlportid) |
498 | wdev->ap_unexpected_nlportid = 0; | |
026331c4 JM |
499 | } |
500 | ||
2e161f78 | 501 | void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev) |
026331c4 | 502 | { |
2e161f78 | 503 | struct cfg80211_mgmt_registration *reg, *tmp; |
026331c4 | 504 | |
2e161f78 | 505 | spin_lock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 506 | |
2e161f78 | 507 | list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { |
026331c4 JM |
508 | list_del(®->list); |
509 | kfree(reg); | |
510 | } | |
511 | ||
2e161f78 | 512 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
026331c4 JM |
513 | } |
514 | ||
2e161f78 | 515 | int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, |
71bbc994 | 516 | struct wireless_dev *wdev, |
f7ca38df | 517 | struct ieee80211_channel *chan, bool offchan, |
42d97a59 JB |
518 | unsigned int wait, const u8 *buf, size_t len, |
519 | bool no_cck, bool dont_wait_for_ack, u64 *cookie) | |
026331c4 | 520 | { |
026331c4 | 521 | const struct ieee80211_mgmt *mgmt; |
2e161f78 JB |
522 | u16 stype; |
523 | ||
524 | if (!wdev->wiphy->mgmt_stypes) | |
525 | return -EOPNOTSUPP; | |
026331c4 | 526 | |
2e161f78 | 527 | if (!rdev->ops->mgmt_tx) |
026331c4 | 528 | return -EOPNOTSUPP; |
2e161f78 | 529 | |
026331c4 JM |
530 | if (len < 24 + 1) |
531 | return -EINVAL; | |
532 | ||
533 | mgmt = (const struct ieee80211_mgmt *) buf; | |
2e161f78 JB |
534 | |
535 | if (!ieee80211_is_mgmt(mgmt->frame_control)) | |
026331c4 | 536 | return -EINVAL; |
2e161f78 JB |
537 | |
538 | stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; | |
539 | if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4))) | |
540 | return -EINVAL; | |
541 | ||
542 | if (ieee80211_is_action(mgmt->frame_control) && | |
543 | mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { | |
663fcafd JB |
544 | int err = 0; |
545 | ||
fe100acd JB |
546 | wdev_lock(wdev); |
547 | ||
663fcafd JB |
548 | switch (wdev->iftype) { |
549 | case NL80211_IFTYPE_ADHOC: | |
550 | case NL80211_IFTYPE_STATION: | |
551 | case NL80211_IFTYPE_P2P_CLIENT: | |
552 | if (!wdev->current_bss) { | |
553 | err = -ENOTCONN; | |
554 | break; | |
555 | } | |
556 | ||
ac422d3c JP |
557 | if (!ether_addr_equal(wdev->current_bss->pub.bssid, |
558 | mgmt->bssid)) { | |
663fcafd JB |
559 | err = -ENOTCONN; |
560 | break; | |
561 | } | |
562 | ||
563 | /* | |
564 | * check for IBSS DA must be done by driver as | |
565 | * cfg80211 doesn't track the stations | |
566 | */ | |
567 | if (wdev->iftype == NL80211_IFTYPE_ADHOC) | |
568 | break; | |
fe100acd | 569 | |
663fcafd | 570 | /* for station, check that DA is the AP */ |
ac422d3c JP |
571 | if (!ether_addr_equal(wdev->current_bss->pub.bssid, |
572 | mgmt->da)) { | |
663fcafd JB |
573 | err = -ENOTCONN; |
574 | break; | |
575 | } | |
576 | break; | |
577 | case NL80211_IFTYPE_AP: | |
578 | case NL80211_IFTYPE_P2P_GO: | |
579 | case NL80211_IFTYPE_AP_VLAN: | |
98104fde | 580 | if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev))) |
663fcafd JB |
581 | err = -EINVAL; |
582 | break; | |
0778a6a3 | 583 | case NL80211_IFTYPE_MESH_POINT: |
ac422d3c | 584 | if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) { |
0778a6a3 JC |
585 | err = -EINVAL; |
586 | break; | |
587 | } | |
588 | /* | |
589 | * check for mesh DA must be done by driver as | |
590 | * cfg80211 doesn't track the stations | |
591 | */ | |
592 | break; | |
98104fde JB |
593 | case NL80211_IFTYPE_P2P_DEVICE: |
594 | /* | |
595 | * fall through, P2P device only supports | |
596 | * public action frames | |
597 | */ | |
663fcafd JB |
598 | default: |
599 | err = -EOPNOTSUPP; | |
600 | break; | |
601 | } | |
fe100acd | 602 | wdev_unlock(wdev); |
663fcafd JB |
603 | |
604 | if (err) | |
605 | return err; | |
026331c4 JM |
606 | } |
607 | ||
98104fde | 608 | if (!ether_addr_equal(mgmt->sa, wdev_address(wdev))) |
026331c4 JM |
609 | return -EINVAL; |
610 | ||
611 | /* Transmit the Action frame as requested by user space */ | |
e35e4d28 | 612 | return rdev_mgmt_tx(rdev, wdev, chan, offchan, |
e35e4d28 HG |
613 | wait, buf, len, no_cck, dont_wait_for_ack, |
614 | cookie); | |
026331c4 JM |
615 | } |
616 | ||
71bbc994 | 617 | bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_mbm, |
804483e9 | 618 | const u8 *buf, size_t len, gfp_t gfp) |
026331c4 | 619 | { |
026331c4 JM |
620 | struct wiphy *wiphy = wdev->wiphy; |
621 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
2e161f78 JB |
622 | struct cfg80211_mgmt_registration *reg; |
623 | const struct ieee80211_txrx_stypes *stypes = | |
624 | &wiphy->mgmt_stypes[wdev->iftype]; | |
625 | struct ieee80211_mgmt *mgmt = (void *)buf; | |
626 | const u8 *data; | |
627 | int data_len; | |
026331c4 | 628 | bool result = false; |
2e161f78 JB |
629 | __le16 ftype = mgmt->frame_control & |
630 | cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE); | |
631 | u16 stype; | |
026331c4 | 632 | |
4ee3e063 | 633 | trace_cfg80211_rx_mgmt(wdev, freq, sig_mbm); |
2e161f78 | 634 | stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4; |
026331c4 | 635 | |
4ee3e063 BL |
636 | if (!(stypes->rx & BIT(stype))) { |
637 | trace_cfg80211_return_bool(false); | |
2e161f78 | 638 | return false; |
4ee3e063 | 639 | } |
026331c4 | 640 | |
2e161f78 JB |
641 | data = buf + ieee80211_hdrlen(mgmt->frame_control); |
642 | data_len = len - ieee80211_hdrlen(mgmt->frame_control); | |
643 | ||
644 | spin_lock_bh(&wdev->mgmt_registrations_lock); | |
645 | ||
646 | list_for_each_entry(reg, &wdev->mgmt_registrations, list) { | |
647 | if (reg->frame_type != ftype) | |
648 | continue; | |
026331c4 | 649 | |
2e161f78 | 650 | if (reg->match_len > data_len) |
026331c4 JM |
651 | continue; |
652 | ||
2e161f78 | 653 | if (memcmp(reg->match, data, reg->match_len)) |
026331c4 JM |
654 | continue; |
655 | ||
656 | /* found match! */ | |
657 | ||
658 | /* Indicate the received Action frame to user space */ | |
15e47304 | 659 | if (nl80211_send_mgmt(rdev, wdev, reg->nlportid, |
804483e9 | 660 | freq, sig_mbm, |
2e161f78 | 661 | buf, len, gfp)) |
026331c4 JM |
662 | continue; |
663 | ||
664 | result = true; | |
665 | break; | |
666 | } | |
667 | ||
2e161f78 | 668 | spin_unlock_bh(&wdev->mgmt_registrations_lock); |
026331c4 | 669 | |
4ee3e063 | 670 | trace_cfg80211_return_bool(result); |
026331c4 JM |
671 | return result; |
672 | } | |
2e161f78 | 673 | EXPORT_SYMBOL(cfg80211_rx_mgmt); |
026331c4 | 674 | |
04f39047 SW |
675 | void cfg80211_dfs_channels_update_work(struct work_struct *work) |
676 | { | |
677 | struct delayed_work *delayed_work; | |
678 | struct cfg80211_registered_device *rdev; | |
679 | struct cfg80211_chan_def chandef; | |
680 | struct ieee80211_supported_band *sband; | |
681 | struct ieee80211_channel *c; | |
682 | struct wiphy *wiphy; | |
683 | bool check_again = false; | |
684 | unsigned long timeout, next_time = 0; | |
685 | int bandid, i; | |
686 | ||
687 | delayed_work = container_of(work, struct delayed_work, work); | |
688 | rdev = container_of(delayed_work, struct cfg80211_registered_device, | |
689 | dfs_update_channels_wk); | |
690 | wiphy = &rdev->wiphy; | |
691 | ||
5fe231e8 | 692 | rtnl_lock(); |
04f39047 SW |
693 | for (bandid = 0; bandid < IEEE80211_NUM_BANDS; bandid++) { |
694 | sband = wiphy->bands[bandid]; | |
695 | if (!sband) | |
696 | continue; | |
697 | ||
698 | for (i = 0; i < sband->n_channels; i++) { | |
699 | c = &sband->channels[i]; | |
700 | ||
701 | if (c->dfs_state != NL80211_DFS_UNAVAILABLE) | |
702 | continue; | |
703 | ||
704 | timeout = c->dfs_state_entered + | |
705 | IEEE80211_DFS_MIN_NOP_TIME_MS; | |
706 | ||
707 | if (time_after_eq(jiffies, timeout)) { | |
708 | c->dfs_state = NL80211_DFS_USABLE; | |
709 | cfg80211_chandef_create(&chandef, c, | |
710 | NL80211_CHAN_NO_HT); | |
711 | ||
712 | nl80211_radar_notify(rdev, &chandef, | |
713 | NL80211_RADAR_NOP_FINISHED, | |
714 | NULL, GFP_ATOMIC); | |
715 | continue; | |
716 | } | |
717 | ||
718 | if (!check_again) | |
719 | next_time = timeout - jiffies; | |
720 | else | |
721 | next_time = min(next_time, timeout - jiffies); | |
722 | check_again = true; | |
723 | } | |
724 | } | |
5fe231e8 | 725 | rtnl_unlock(); |
04f39047 SW |
726 | |
727 | /* reschedule if there are other channels waiting to be cleared again */ | |
728 | if (check_again) | |
729 | queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, | |
730 | next_time); | |
731 | } | |
732 | ||
733 | ||
734 | void cfg80211_radar_event(struct wiphy *wiphy, | |
735 | struct cfg80211_chan_def *chandef, | |
736 | gfp_t gfp) | |
737 | { | |
738 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
739 | unsigned long timeout; | |
740 | ||
741 | trace_cfg80211_radar_event(wiphy, chandef); | |
742 | ||
743 | /* only set the chandef supplied channel to unavailable, in | |
744 | * case the radar is detected on only one of multiple channels | |
745 | * spanned by the chandef. | |
746 | */ | |
747 | cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE); | |
748 | ||
749 | timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_NOP_TIME_MS); | |
750 | queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, | |
751 | timeout); | |
752 | ||
753 | nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp); | |
754 | } | |
755 | EXPORT_SYMBOL(cfg80211_radar_event); | |
756 | ||
757 | void cfg80211_cac_event(struct net_device *netdev, | |
758 | enum nl80211_radar_event event, gfp_t gfp) | |
759 | { | |
760 | struct wireless_dev *wdev = netdev->ieee80211_ptr; | |
761 | struct wiphy *wiphy = wdev->wiphy; | |
762 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
763 | struct cfg80211_chan_def chandef; | |
764 | unsigned long timeout; | |
765 | ||
766 | trace_cfg80211_cac_event(netdev, event); | |
767 | ||
768 | if (WARN_ON(!wdev->cac_started)) | |
769 | return; | |
770 | ||
771 | if (WARN_ON(!wdev->channel)) | |
772 | return; | |
773 | ||
774 | cfg80211_chandef_create(&chandef, wdev->channel, NL80211_CHAN_NO_HT); | |
775 | ||
776 | switch (event) { | |
777 | case NL80211_RADAR_CAC_FINISHED: | |
778 | timeout = wdev->cac_start_time + | |
779 | msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); | |
780 | WARN_ON(!time_after_eq(jiffies, timeout)); | |
781 | cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_AVAILABLE); | |
782 | break; | |
783 | case NL80211_RADAR_CAC_ABORTED: | |
784 | break; | |
785 | default: | |
786 | WARN_ON(1); | |
787 | return; | |
788 | } | |
789 | wdev->cac_started = false; | |
790 | ||
791 | nl80211_radar_notify(rdev, &chandef, event, netdev, gfp); | |
792 | } | |
793 | EXPORT_SYMBOL(cfg80211_cac_event); |