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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> | |
9 | #include <linux/netdevice.h> | |
10 | #include <linux/nl80211.h> | |
5a0e3ad6 | 11 | #include <linux/slab.h> |
a9a11622 | 12 | #include <linux/wireless.h> |
6039f6d2 | 13 | #include <net/cfg80211.h> |
a9a11622 | 14 | #include <net/iw_handler.h> |
6039f6d2 JM |
15 | #include "core.h" |
16 | #include "nl80211.h" | |
17 | ||
cb0b4beb | 18 | void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len) |
6039f6d2 | 19 | { |
19957bb3 JB |
20 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
21 | struct wiphy *wiphy = wdev->wiphy; | |
6039f6d2 | 22 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
19957bb3 JB |
23 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
24 | u8 *bssid = mgmt->bssid; | |
25 | int i; | |
26 | u16 status = le16_to_cpu(mgmt->u.auth.status_code); | |
27 | bool done = false; | |
28 | ||
667503dd | 29 | wdev_lock(wdev); |
cb0b4beb | 30 | |
19957bb3 JB |
31 | for (i = 0; i < MAX_AUTH_BSSES; i++) { |
32 | if (wdev->authtry_bsses[i] && | |
33 | memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid, | |
34 | ETH_ALEN) == 0) { | |
35 | if (status == WLAN_STATUS_SUCCESS) { | |
36 | wdev->auth_bsses[i] = wdev->authtry_bsses[i]; | |
37 | } else { | |
38 | cfg80211_unhold_bss(wdev->authtry_bsses[i]); | |
39 | cfg80211_put_bss(&wdev->authtry_bsses[i]->pub); | |
40 | } | |
41 | wdev->authtry_bsses[i] = NULL; | |
42 | done = true; | |
43 | break; | |
44 | } | |
45 | } | |
46 | ||
643f82e3 JB |
47 | if (done) { |
48 | nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL); | |
49 | cfg80211_sme_rx_auth(dev, buf, len); | |
50 | } | |
667503dd JB |
51 | |
52 | wdev_unlock(wdev); | |
6039f6d2 JM |
53 | } |
54 | EXPORT_SYMBOL(cfg80211_send_rx_auth); | |
55 | ||
cb0b4beb | 56 | void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len) |
6039f6d2 | 57 | { |
6829c878 JB |
58 | u16 status_code; |
59 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
60 | struct wiphy *wiphy = wdev->wiphy; | |
6039f6d2 | 61 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
6829c878 JB |
62 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
63 | u8 *ie = mgmt->u.assoc_resp.variable; | |
19957bb3 | 64 | int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable); |
df7fc0f9 | 65 | struct cfg80211_internal_bss *bss = NULL; |
6829c878 | 66 | |
667503dd | 67 | wdev_lock(wdev); |
cb0b4beb | 68 | |
6829c878 JB |
69 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); |
70 | ||
f401a6f7 JB |
71 | /* |
72 | * This is a bit of a hack, we don't notify userspace of | |
73 | * a (re-)association reply if we tried to send a reassoc | |
74 | * and got a reject -- we only try again with an assoc | |
75 | * frame instead of reassoc. | |
76 | */ | |
77 | if (status_code != WLAN_STATUS_SUCCESS && wdev->conn && | |
78 | cfg80211_sme_failed_reassoc(wdev)) | |
79 | goto out; | |
80 | ||
cb0b4beb | 81 | nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL); |
6829c878 | 82 | |
19957bb3 | 83 | if (status_code == WLAN_STATUS_SUCCESS) { |
df7fc0f9 JB |
84 | for (i = 0; i < MAX_AUTH_BSSES; i++) { |
85 | if (!wdev->auth_bsses[i]) | |
86 | continue; | |
87 | if (memcmp(wdev->auth_bsses[i]->pub.bssid, mgmt->bssid, | |
88 | ETH_ALEN) == 0) { | |
89 | bss = wdev->auth_bsses[i]; | |
19957bb3 | 90 | wdev->auth_bsses[i] = NULL; |
df7fc0f9 JB |
91 | /* additional reference to drop hold */ |
92 | cfg80211_ref_bss(bss); | |
19957bb3 JB |
93 | break; |
94 | } | |
95 | } | |
96 | ||
3bdb2d48 JB |
97 | /* |
98 | * We might be coming here because the driver reported | |
99 | * a successful association at the same time as the | |
100 | * user requested a deauth. In that case, we will have | |
101 | * removed the BSS from the auth_bsses list due to the | |
102 | * deauth request when the assoc response makes it. If | |
103 | * the two code paths acquire the lock the other way | |
104 | * around, that's just the standard situation of a | |
105 | * deauth being requested while connected. | |
106 | */ | |
107 | if (!bss) | |
108 | goto out; | |
7d930bc3 JB |
109 | } else if (wdev->conn) { |
110 | cfg80211_sme_failed_assoc(wdev); | |
7d930bc3 JB |
111 | /* |
112 | * do not call connect_result() now because the | |
113 | * sme will schedule work that does it later. | |
114 | */ | |
115 | goto out; | |
df7fc0f9 JB |
116 | } |
117 | ||
ea416a79 JB |
118 | if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) { |
119 | /* | |
120 | * This is for the userspace SME, the CONNECTING | |
121 | * state will be changed to CONNECTED by | |
122 | * __cfg80211_connect_result() below. | |
123 | */ | |
124 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
125 | } | |
126 | ||
df7fc0f9 JB |
127 | /* this consumes one bss reference (unless bss is NULL) */ |
128 | __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs, | |
129 | status_code, | |
130 | status_code == WLAN_STATUS_SUCCESS, | |
131 | bss ? &bss->pub : NULL); | |
132 | /* drop hold now, and also reference acquired above */ | |
133 | if (bss) { | |
134 | cfg80211_unhold_bss(bss); | |
135 | cfg80211_put_bss(&bss->pub); | |
19957bb3 | 136 | } |
667503dd | 137 | |
f401a6f7 | 138 | out: |
667503dd | 139 | wdev_unlock(wdev); |
6039f6d2 JM |
140 | } |
141 | EXPORT_SYMBOL(cfg80211_send_rx_assoc); | |
142 | ||
ce470613 | 143 | void __cfg80211_send_deauth(struct net_device *dev, |
667503dd | 144 | const u8 *buf, size_t len) |
6039f6d2 | 145 | { |
6829c878 JB |
146 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
147 | struct wiphy *wiphy = wdev->wiphy; | |
6039f6d2 | 148 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
6829c878 | 149 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
19957bb3 JB |
150 | const u8 *bssid = mgmt->bssid; |
151 | int i; | |
5fba4af3 | 152 | bool found = false; |
6829c878 | 153 | |
667503dd | 154 | ASSERT_WDEV_LOCK(wdev); |
cb0b4beb | 155 | |
19957bb3 JB |
156 | if (wdev->current_bss && |
157 | memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) { | |
19957bb3 JB |
158 | cfg80211_unhold_bss(wdev->current_bss); |
159 | cfg80211_put_bss(&wdev->current_bss->pub); | |
160 | wdev->current_bss = NULL; | |
5fba4af3 | 161 | found = true; |
19957bb3 JB |
162 | } else for (i = 0; i < MAX_AUTH_BSSES; i++) { |
163 | if (wdev->auth_bsses[i] && | |
164 | memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) { | |
165 | cfg80211_unhold_bss(wdev->auth_bsses[i]); | |
166 | cfg80211_put_bss(&wdev->auth_bsses[i]->pub); | |
167 | wdev->auth_bsses[i] = NULL; | |
5fba4af3 | 168 | found = true; |
19957bb3 JB |
169 | break; |
170 | } | |
171 | if (wdev->authtry_bsses[i] && | |
172 | memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) { | |
173 | cfg80211_unhold_bss(wdev->authtry_bsses[i]); | |
174 | cfg80211_put_bss(&wdev->authtry_bsses[i]->pub); | |
175 | wdev->authtry_bsses[i] = NULL; | |
5fba4af3 | 176 | found = true; |
19957bb3 JB |
177 | break; |
178 | } | |
179 | } | |
19957bb3 | 180 | |
5fba4af3 JB |
181 | if (!found) |
182 | return; | |
183 | ||
184 | nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL); | |
185 | ||
6829c878 JB |
186 | if (wdev->sme_state == CFG80211_SME_CONNECTED) { |
187 | u16 reason_code; | |
188 | bool from_ap; | |
189 | ||
190 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
191 | ||
e458b8a2 | 192 | from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0; |
667503dd | 193 | __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap); |
6829c878 | 194 | } else if (wdev->sme_state == CFG80211_SME_CONNECTING) { |
667503dd JB |
195 | __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0, |
196 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 197 | false, NULL); |
667503dd JB |
198 | } |
199 | } | |
ce470613 | 200 | EXPORT_SYMBOL(__cfg80211_send_deauth); |
667503dd | 201 | |
ce470613 | 202 | void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len) |
667503dd JB |
203 | { |
204 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
205 | ||
ce470613 HS |
206 | wdev_lock(wdev); |
207 | __cfg80211_send_deauth(dev, buf, len); | |
208 | wdev_unlock(wdev); | |
6039f6d2 | 209 | } |
53b46b84 | 210 | EXPORT_SYMBOL(cfg80211_send_deauth); |
6039f6d2 | 211 | |
ce470613 | 212 | void __cfg80211_send_disassoc(struct net_device *dev, |
667503dd | 213 | const u8 *buf, size_t len) |
6039f6d2 | 214 | { |
6829c878 JB |
215 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
216 | struct wiphy *wiphy = wdev->wiphy; | |
6039f6d2 | 217 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
6829c878 | 218 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
19957bb3 JB |
219 | const u8 *bssid = mgmt->bssid; |
220 | int i; | |
221 | u16 reason_code; | |
222 | bool from_ap; | |
223 | bool done = false; | |
6829c878 | 224 | |
596a07c1 | 225 | ASSERT_WDEV_LOCK(wdev); |
cb0b4beb JB |
226 | |
227 | nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL); | |
a3b8b056 | 228 | |
596a07c1 JB |
229 | if (wdev->sme_state != CFG80211_SME_CONNECTED) |
230 | return; | |
6829c878 | 231 | |
19957bb3 | 232 | if (wdev->current_bss && |
b935df01 | 233 | memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) { |
19957bb3 JB |
234 | for (i = 0; i < MAX_AUTH_BSSES; i++) { |
235 | if (wdev->authtry_bsses[i] || wdev->auth_bsses[i]) | |
236 | continue; | |
237 | wdev->auth_bsses[i] = wdev->current_bss; | |
238 | wdev->current_bss = NULL; | |
239 | done = true; | |
240 | cfg80211_sme_disassoc(dev, i); | |
241 | break; | |
242 | } | |
243 | WARN_ON(!done); | |
244 | } else | |
245 | WARN_ON(1); | |
6829c878 | 246 | |
6829c878 | 247 | |
19957bb3 JB |
248 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
249 | ||
e458b8a2 | 250 | from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0; |
667503dd | 251 | __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap); |
667503dd | 252 | } |
ce470613 | 253 | EXPORT_SYMBOL(__cfg80211_send_disassoc); |
667503dd | 254 | |
ce470613 | 255 | void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len) |
667503dd JB |
256 | { |
257 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
258 | ||
ce470613 HS |
259 | wdev_lock(wdev); |
260 | __cfg80211_send_disassoc(dev, buf, len); | |
261 | wdev_unlock(wdev); | |
1965c853 | 262 | } |
6829c878 | 263 | EXPORT_SYMBOL(cfg80211_send_disassoc); |
1965c853 | 264 | |
a58ce43f | 265 | static void __cfg80211_auth_remove(struct wireless_dev *wdev, const u8 *addr) |
1965c853 | 266 | { |
19957bb3 JB |
267 | int i; |
268 | bool done = false; | |
269 | ||
a58ce43f | 270 | ASSERT_WDEV_LOCK(wdev); |
19957bb3 JB |
271 | |
272 | for (i = 0; addr && i < MAX_AUTH_BSSES; i++) { | |
273 | if (wdev->authtry_bsses[i] && | |
274 | memcmp(wdev->authtry_bsses[i]->pub.bssid, | |
275 | addr, ETH_ALEN) == 0) { | |
276 | cfg80211_unhold_bss(wdev->authtry_bsses[i]); | |
277 | cfg80211_put_bss(&wdev->authtry_bsses[i]->pub); | |
278 | wdev->authtry_bsses[i] = NULL; | |
279 | done = true; | |
280 | break; | |
281 | } | |
282 | } | |
283 | ||
284 | WARN_ON(!done); | |
a58ce43f JB |
285 | } |
286 | ||
287 | void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr) | |
288 | { | |
289 | __cfg80211_auth_remove(dev->ieee80211_ptr, addr); | |
290 | } | |
291 | EXPORT_SYMBOL(__cfg80211_auth_canceled); | |
292 | ||
293 | void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr) | |
294 | { | |
295 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
296 | struct wiphy *wiphy = wdev->wiphy; | |
297 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
298 | ||
299 | wdev_lock(wdev); | |
300 | ||
301 | nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL); | |
302 | if (wdev->sme_state == CFG80211_SME_CONNECTING) | |
303 | __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0, | |
304 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
305 | false, NULL); | |
306 | ||
307 | __cfg80211_auth_remove(wdev, addr); | |
667503dd JB |
308 | |
309 | wdev_unlock(wdev); | |
1965c853 JM |
310 | } |
311 | EXPORT_SYMBOL(cfg80211_send_auth_timeout); | |
312 | ||
cb0b4beb | 313 | void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr) |
1965c853 | 314 | { |
6829c878 JB |
315 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
316 | struct wiphy *wiphy = wdev->wiphy; | |
1965c853 | 317 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
19957bb3 JB |
318 | int i; |
319 | bool done = false; | |
320 | ||
667503dd | 321 | wdev_lock(wdev); |
cb0b4beb JB |
322 | |
323 | nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL); | |
6829c878 | 324 | if (wdev->sme_state == CFG80211_SME_CONNECTING) |
667503dd JB |
325 | __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0, |
326 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 327 | false, NULL); |
19957bb3 JB |
328 | |
329 | for (i = 0; addr && i < MAX_AUTH_BSSES; i++) { | |
330 | if (wdev->auth_bsses[i] && | |
331 | memcmp(wdev->auth_bsses[i]->pub.bssid, | |
332 | addr, ETH_ALEN) == 0) { | |
333 | cfg80211_unhold_bss(wdev->auth_bsses[i]); | |
334 | cfg80211_put_bss(&wdev->auth_bsses[i]->pub); | |
335 | wdev->auth_bsses[i] = NULL; | |
336 | done = true; | |
337 | break; | |
338 | } | |
339 | } | |
340 | ||
341 | WARN_ON(!done); | |
667503dd JB |
342 | |
343 | wdev_unlock(wdev); | |
1965c853 JM |
344 | } |
345 | EXPORT_SYMBOL(cfg80211_send_assoc_timeout); | |
346 | ||
a3b8b056 JM |
347 | void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, |
348 | enum nl80211_key_type key_type, int key_id, | |
e6d6e342 | 349 | const u8 *tsc, gfp_t gfp) |
a3b8b056 JM |
350 | { |
351 | struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; | |
352 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
3d23e349 | 353 | #ifdef CONFIG_CFG80211_WEXT |
f58d4ed9 | 354 | union iwreq_data wrqu; |
e6d6e342 | 355 | char *buf = kmalloc(128, gfp); |
f58d4ed9 JB |
356 | |
357 | if (buf) { | |
358 | sprintf(buf, "MLME-MICHAELMICFAILURE.indication(" | |
359 | "keyid=%d %scast addr=%pM)", key_id, | |
360 | key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni", | |
361 | addr); | |
362 | memset(&wrqu, 0, sizeof(wrqu)); | |
363 | wrqu.data.length = strlen(buf); | |
364 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
365 | kfree(buf); | |
366 | } | |
367 | #endif | |
368 | ||
e6d6e342 | 369 | nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp); |
a3b8b056 JM |
370 | } |
371 | EXPORT_SYMBOL(cfg80211_michael_mic_failure); | |
19957bb3 JB |
372 | |
373 | /* some MLME handling for userspace SME */ | |
667503dd JB |
374 | int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
375 | struct net_device *dev, | |
376 | struct ieee80211_channel *chan, | |
377 | enum nl80211_auth_type auth_type, | |
378 | const u8 *bssid, | |
379 | const u8 *ssid, int ssid_len, | |
fffd0934 | 380 | const u8 *ie, int ie_len, |
d5cdfacb JM |
381 | const u8 *key, int key_len, int key_idx, |
382 | bool local_state_change) | |
19957bb3 JB |
383 | { |
384 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
385 | struct cfg80211_auth_request req; | |
386 | struct cfg80211_internal_bss *bss; | |
387 | int i, err, slot = -1, nfree = 0; | |
388 | ||
667503dd JB |
389 | ASSERT_WDEV_LOCK(wdev); |
390 | ||
fffd0934 JB |
391 | if (auth_type == NL80211_AUTHTYPE_SHARED_KEY) |
392 | if (!key || !key_len || key_idx < 0 || key_idx > 4) | |
393 | return -EINVAL; | |
394 | ||
0a9b5e17 JB |
395 | if (wdev->current_bss && |
396 | memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0) | |
397 | return -EALREADY; | |
398 | ||
399 | for (i = 0; i < MAX_AUTH_BSSES; i++) { | |
400 | if (wdev->authtry_bsses[i] && | |
401 | memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, | |
402 | ETH_ALEN) == 0) | |
403 | return -EALREADY; | |
404 | if (wdev->auth_bsses[i] && | |
405 | memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, | |
406 | ETH_ALEN) == 0) | |
407 | return -EALREADY; | |
408 | } | |
409 | ||
19957bb3 JB |
410 | memset(&req, 0, sizeof(req)); |
411 | ||
d5cdfacb | 412 | req.local_state_change = local_state_change; |
19957bb3 JB |
413 | req.ie = ie; |
414 | req.ie_len = ie_len; | |
415 | req.auth_type = auth_type; | |
416 | req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, | |
417 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
fffd0934 JB |
418 | req.key = key; |
419 | req.key_len = key_len; | |
420 | req.key_idx = key_idx; | |
19957bb3 JB |
421 | if (!req.bss) |
422 | return -ENOENT; | |
423 | ||
424 | bss = bss_from_pub(req.bss); | |
425 | ||
19957bb3 JB |
426 | for (i = 0; i < MAX_AUTH_BSSES; i++) { |
427 | if (!wdev->auth_bsses[i] && !wdev->authtry_bsses[i]) { | |
428 | slot = i; | |
429 | nfree++; | |
430 | } | |
431 | } | |
432 | ||
433 | /* we need one free slot for disassoc and one for this auth */ | |
434 | if (nfree < 2) { | |
435 | err = -ENOSPC; | |
436 | goto out; | |
437 | } | |
438 | ||
d5cdfacb JM |
439 | if (local_state_change) |
440 | wdev->auth_bsses[slot] = bss; | |
441 | else | |
442 | wdev->authtry_bsses[slot] = bss; | |
19957bb3 JB |
443 | cfg80211_hold_bss(bss); |
444 | ||
445 | err = rdev->ops->auth(&rdev->wiphy, dev, &req); | |
446 | if (err) { | |
d5cdfacb JM |
447 | if (local_state_change) |
448 | wdev->auth_bsses[slot] = NULL; | |
449 | else | |
450 | wdev->authtry_bsses[slot] = NULL; | |
19957bb3 JB |
451 | cfg80211_unhold_bss(bss); |
452 | } | |
453 | ||
454 | out: | |
455 | if (err) | |
456 | cfg80211_put_bss(req.bss); | |
457 | return err; | |
458 | } | |
459 | ||
667503dd JB |
460 | int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
461 | struct net_device *dev, struct ieee80211_channel *chan, | |
462 | enum nl80211_auth_type auth_type, const u8 *bssid, | |
463 | const u8 *ssid, int ssid_len, | |
fffd0934 | 464 | const u8 *ie, int ie_len, |
d5cdfacb JM |
465 | const u8 *key, int key_len, int key_idx, |
466 | bool local_state_change) | |
667503dd JB |
467 | { |
468 | int err; | |
469 | ||
470 | wdev_lock(dev->ieee80211_ptr); | |
471 | err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, | |
fffd0934 | 472 | ssid, ssid_len, ie, ie_len, |
d5cdfacb | 473 | key, key_len, key_idx, local_state_change); |
667503dd JB |
474 | wdev_unlock(dev->ieee80211_ptr); |
475 | ||
476 | return err; | |
477 | } | |
478 | ||
479 | int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, | |
480 | struct net_device *dev, | |
481 | struct ieee80211_channel *chan, | |
482 | const u8 *bssid, const u8 *prev_bssid, | |
483 | const u8 *ssid, int ssid_len, | |
484 | const u8 *ie, int ie_len, bool use_mfp, | |
485 | struct cfg80211_crypto_settings *crypt) | |
19957bb3 JB |
486 | { |
487 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
488 | struct cfg80211_assoc_request req; | |
489 | struct cfg80211_internal_bss *bss; | |
490 | int i, err, slot = -1; | |
24b6b15f | 491 | bool was_connected = false; |
19957bb3 | 492 | |
667503dd JB |
493 | ASSERT_WDEV_LOCK(wdev); |
494 | ||
19957bb3 JB |
495 | memset(&req, 0, sizeof(req)); |
496 | ||
24b6b15f JM |
497 | if (wdev->current_bss && prev_bssid && |
498 | memcmp(wdev->current_bss->pub.bssid, prev_bssid, ETH_ALEN) == 0) { | |
499 | /* | |
500 | * Trying to reassociate: Allow this to proceed and let the old | |
501 | * association to be dropped when the new one is completed. | |
502 | */ | |
503 | if (wdev->sme_state == CFG80211_SME_CONNECTED) { | |
504 | was_connected = true; | |
505 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
506 | } | |
507 | } else if (wdev->current_bss) | |
19957bb3 JB |
508 | return -EALREADY; |
509 | ||
510 | req.ie = ie; | |
511 | req.ie_len = ie_len; | |
512 | memcpy(&req.crypto, crypt, sizeof(req.crypto)); | |
513 | req.use_mfp = use_mfp; | |
3e5d7649 | 514 | req.prev_bssid = prev_bssid; |
19957bb3 JB |
515 | req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
516 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
24b6b15f JM |
517 | if (!req.bss) { |
518 | if (was_connected) | |
519 | wdev->sme_state = CFG80211_SME_CONNECTED; | |
19957bb3 | 520 | return -ENOENT; |
24b6b15f | 521 | } |
19957bb3 JB |
522 | |
523 | bss = bss_from_pub(req.bss); | |
524 | ||
525 | for (i = 0; i < MAX_AUTH_BSSES; i++) { | |
526 | if (bss == wdev->auth_bsses[i]) { | |
527 | slot = i; | |
528 | break; | |
529 | } | |
530 | } | |
531 | ||
532 | if (slot < 0) { | |
533 | err = -ENOTCONN; | |
534 | goto out; | |
535 | } | |
536 | ||
537 | err = rdev->ops->assoc(&rdev->wiphy, dev, &req); | |
538 | out: | |
24b6b15f JM |
539 | if (err && was_connected) |
540 | wdev->sme_state = CFG80211_SME_CONNECTED; | |
19957bb3 JB |
541 | /* still a reference in wdev->auth_bsses[slot] */ |
542 | cfg80211_put_bss(req.bss); | |
543 | return err; | |
544 | } | |
545 | ||
667503dd JB |
546 | int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
547 | struct net_device *dev, | |
548 | struct ieee80211_channel *chan, | |
549 | const u8 *bssid, const u8 *prev_bssid, | |
550 | const u8 *ssid, int ssid_len, | |
551 | const u8 *ie, int ie_len, bool use_mfp, | |
552 | struct cfg80211_crypto_settings *crypt) | |
553 | { | |
554 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
555 | int err; | |
556 | ||
557 | wdev_lock(wdev); | |
558 | err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid, | |
559 | ssid, ssid_len, ie, ie_len, use_mfp, crypt); | |
560 | wdev_unlock(wdev); | |
561 | ||
562 | return err; | |
563 | } | |
564 | ||
565 | int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, | |
566 | struct net_device *dev, const u8 *bssid, | |
d5cdfacb JM |
567 | const u8 *ie, int ie_len, u16 reason, |
568 | bool local_state_change) | |
19957bb3 JB |
569 | { |
570 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
571 | struct cfg80211_deauth_request req; | |
572 | int i; | |
573 | ||
667503dd JB |
574 | ASSERT_WDEV_LOCK(wdev); |
575 | ||
19957bb3 JB |
576 | memset(&req, 0, sizeof(req)); |
577 | req.reason_code = reason; | |
d5cdfacb | 578 | req.local_state_change = local_state_change; |
19957bb3 JB |
579 | req.ie = ie; |
580 | req.ie_len = ie_len; | |
581 | if (wdev->current_bss && | |
582 | memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) { | |
583 | req.bss = &wdev->current_bss->pub; | |
584 | } else for (i = 0; i < MAX_AUTH_BSSES; i++) { | |
585 | if (wdev->auth_bsses[i] && | |
586 | memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, ETH_ALEN) == 0) { | |
587 | req.bss = &wdev->auth_bsses[i]->pub; | |
588 | break; | |
589 | } | |
590 | if (wdev->authtry_bsses[i] && | |
591 | memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, ETH_ALEN) == 0) { | |
592 | req.bss = &wdev->authtry_bsses[i]->pub; | |
593 | break; | |
594 | } | |
595 | } | |
596 | ||
597 | if (!req.bss) | |
598 | return -ENOTCONN; | |
599 | ||
667503dd | 600 | return rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev); |
19957bb3 JB |
601 | } |
602 | ||
667503dd JB |
603 | int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, |
604 | struct net_device *dev, const u8 *bssid, | |
d5cdfacb JM |
605 | const u8 *ie, int ie_len, u16 reason, |
606 | bool local_state_change) | |
667503dd JB |
607 | { |
608 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
609 | int err; | |
610 | ||
611 | wdev_lock(wdev); | |
d5cdfacb JM |
612 | err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason, |
613 | local_state_change); | |
667503dd JB |
614 | wdev_unlock(wdev); |
615 | ||
616 | return err; | |
617 | } | |
618 | ||
619 | static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, | |
620 | struct net_device *dev, const u8 *bssid, | |
d5cdfacb JM |
621 | const u8 *ie, int ie_len, u16 reason, |
622 | bool local_state_change) | |
19957bb3 JB |
623 | { |
624 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
625 | struct cfg80211_disassoc_request req; | |
626 | ||
667503dd JB |
627 | ASSERT_WDEV_LOCK(wdev); |
628 | ||
f9d6b402 JB |
629 | if (wdev->sme_state != CFG80211_SME_CONNECTED) |
630 | return -ENOTCONN; | |
631 | ||
632 | if (WARN_ON(!wdev->current_bss)) | |
633 | return -ENOTCONN; | |
634 | ||
19957bb3 JB |
635 | memset(&req, 0, sizeof(req)); |
636 | req.reason_code = reason; | |
d5cdfacb | 637 | req.local_state_change = local_state_change; |
19957bb3 JB |
638 | req.ie = ie; |
639 | req.ie_len = ie_len; | |
640 | if (memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) | |
641 | req.bss = &wdev->current_bss->pub; | |
642 | else | |
643 | return -ENOTCONN; | |
644 | ||
667503dd JB |
645 | return rdev->ops->disassoc(&rdev->wiphy, dev, &req, wdev); |
646 | } | |
647 | ||
648 | int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, | |
649 | struct net_device *dev, const u8 *bssid, | |
d5cdfacb JM |
650 | const u8 *ie, int ie_len, u16 reason, |
651 | bool local_state_change) | |
667503dd JB |
652 | { |
653 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
654 | int err; | |
655 | ||
656 | wdev_lock(wdev); | |
d5cdfacb JM |
657 | err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason, |
658 | local_state_change); | |
667503dd JB |
659 | wdev_unlock(wdev); |
660 | ||
661 | return err; | |
19957bb3 JB |
662 | } |
663 | ||
664 | void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, | |
665 | struct net_device *dev) | |
666 | { | |
667 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
668 | struct cfg80211_deauth_request req; | |
669 | int i; | |
670 | ||
667503dd JB |
671 | ASSERT_WDEV_LOCK(wdev); |
672 | ||
19957bb3 JB |
673 | if (!rdev->ops->deauth) |
674 | return; | |
675 | ||
676 | memset(&req, 0, sizeof(req)); | |
677 | req.reason_code = WLAN_REASON_DEAUTH_LEAVING; | |
678 | req.ie = NULL; | |
679 | req.ie_len = 0; | |
680 | ||
681 | if (wdev->current_bss) { | |
682 | req.bss = &wdev->current_bss->pub; | |
667503dd | 683 | rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev); |
19957bb3 JB |
684 | if (wdev->current_bss) { |
685 | cfg80211_unhold_bss(wdev->current_bss); | |
686 | cfg80211_put_bss(&wdev->current_bss->pub); | |
687 | wdev->current_bss = NULL; | |
688 | } | |
689 | } | |
690 | ||
691 | for (i = 0; i < MAX_AUTH_BSSES; i++) { | |
692 | if (wdev->auth_bsses[i]) { | |
693 | req.bss = &wdev->auth_bsses[i]->pub; | |
667503dd | 694 | rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev); |
19957bb3 JB |
695 | if (wdev->auth_bsses[i]) { |
696 | cfg80211_unhold_bss(wdev->auth_bsses[i]); | |
697 | cfg80211_put_bss(&wdev->auth_bsses[i]->pub); | |
698 | wdev->auth_bsses[i] = NULL; | |
699 | } | |
700 | } | |
701 | if (wdev->authtry_bsses[i]) { | |
702 | req.bss = &wdev->authtry_bsses[i]->pub; | |
667503dd | 703 | rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev); |
19957bb3 JB |
704 | if (wdev->authtry_bsses[i]) { |
705 | cfg80211_unhold_bss(wdev->authtry_bsses[i]); | |
706 | cfg80211_put_bss(&wdev->authtry_bsses[i]->pub); | |
707 | wdev->authtry_bsses[i] = NULL; | |
708 | } | |
709 | } | |
710 | } | |
711 | } | |
9588bbd5 JM |
712 | |
713 | void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie, | |
714 | struct ieee80211_channel *chan, | |
715 | enum nl80211_channel_type channel_type, | |
716 | unsigned int duration, gfp_t gfp) | |
717 | { | |
718 | struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; | |
719 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
720 | ||
721 | nl80211_send_remain_on_channel(rdev, dev, cookie, chan, channel_type, | |
722 | duration, gfp); | |
723 | } | |
724 | EXPORT_SYMBOL(cfg80211_ready_on_channel); | |
725 | ||
726 | void cfg80211_remain_on_channel_expired(struct net_device *dev, | |
727 | u64 cookie, | |
728 | struct ieee80211_channel *chan, | |
729 | enum nl80211_channel_type channel_type, | |
730 | gfp_t gfp) | |
731 | { | |
732 | struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; | |
733 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
734 | ||
735 | nl80211_send_remain_on_channel_cancel(rdev, dev, cookie, chan, | |
736 | channel_type, gfp); | |
737 | } | |
738 | EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); | |
98b62183 JB |
739 | |
740 | void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, | |
741 | struct station_info *sinfo, gfp_t gfp) | |
742 | { | |
743 | struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; | |
744 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
745 | ||
746 | nl80211_send_sta_event(rdev, dev, mac_addr, sinfo, gfp); | |
747 | } | |
748 | EXPORT_SYMBOL(cfg80211_new_sta); | |
026331c4 JM |
749 | |
750 | struct cfg80211_action_registration { | |
751 | struct list_head list; | |
752 | ||
753 | u32 nlpid; | |
754 | ||
755 | int match_len; | |
756 | ||
757 | u8 match[]; | |
758 | }; | |
759 | ||
760 | int cfg80211_mlme_register_action(struct wireless_dev *wdev, u32 snd_pid, | |
761 | const u8 *match_data, int match_len) | |
762 | { | |
763 | struct cfg80211_action_registration *reg, *nreg; | |
764 | int err = 0; | |
765 | ||
766 | nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL); | |
767 | if (!nreg) | |
768 | return -ENOMEM; | |
769 | ||
770 | spin_lock_bh(&wdev->action_registrations_lock); | |
771 | ||
772 | list_for_each_entry(reg, &wdev->action_registrations, list) { | |
773 | int mlen = min(match_len, reg->match_len); | |
774 | ||
775 | if (memcmp(reg->match, match_data, mlen) == 0) { | |
776 | err = -EALREADY; | |
777 | break; | |
778 | } | |
779 | } | |
780 | ||
781 | if (err) { | |
782 | kfree(nreg); | |
783 | goto out; | |
784 | } | |
785 | ||
786 | memcpy(nreg->match, match_data, match_len); | |
787 | nreg->match_len = match_len; | |
788 | nreg->nlpid = snd_pid; | |
789 | list_add(&nreg->list, &wdev->action_registrations); | |
790 | ||
791 | out: | |
792 | spin_unlock_bh(&wdev->action_registrations_lock); | |
793 | return err; | |
794 | } | |
795 | ||
796 | void cfg80211_mlme_unregister_actions(struct wireless_dev *wdev, u32 nlpid) | |
797 | { | |
798 | struct cfg80211_action_registration *reg, *tmp; | |
799 | ||
800 | spin_lock_bh(&wdev->action_registrations_lock); | |
801 | ||
802 | list_for_each_entry_safe(reg, tmp, &wdev->action_registrations, list) { | |
803 | if (reg->nlpid == nlpid) { | |
804 | list_del(®->list); | |
805 | kfree(reg); | |
806 | } | |
807 | } | |
808 | ||
809 | spin_unlock_bh(&wdev->action_registrations_lock); | |
810 | } | |
811 | ||
812 | void cfg80211_mlme_purge_actions(struct wireless_dev *wdev) | |
813 | { | |
814 | struct cfg80211_action_registration *reg, *tmp; | |
815 | ||
816 | spin_lock_bh(&wdev->action_registrations_lock); | |
817 | ||
818 | list_for_each_entry_safe(reg, tmp, &wdev->action_registrations, list) { | |
819 | list_del(®->list); | |
820 | kfree(reg); | |
821 | } | |
822 | ||
823 | spin_unlock_bh(&wdev->action_registrations_lock); | |
824 | } | |
825 | ||
826 | int cfg80211_mlme_action(struct cfg80211_registered_device *rdev, | |
827 | struct net_device *dev, | |
828 | struct ieee80211_channel *chan, | |
829 | enum nl80211_channel_type channel_type, | |
252aa631 | 830 | bool channel_type_valid, |
026331c4 JM |
831 | const u8 *buf, size_t len, u64 *cookie) |
832 | { | |
833 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
834 | const struct ieee80211_mgmt *mgmt; | |
835 | ||
836 | if (rdev->ops->action == NULL) | |
837 | return -EOPNOTSUPP; | |
838 | if (len < 24 + 1) | |
839 | return -EINVAL; | |
840 | ||
841 | mgmt = (const struct ieee80211_mgmt *) buf; | |
842 | if (!ieee80211_is_action(mgmt->frame_control)) | |
843 | return -EINVAL; | |
844 | if (mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { | |
845 | /* Verify that we are associated with the destination AP */ | |
fe100acd JB |
846 | wdev_lock(wdev); |
847 | ||
026331c4 JM |
848 | if (!wdev->current_bss || |
849 | memcmp(wdev->current_bss->pub.bssid, mgmt->bssid, | |
850 | ETH_ALEN) != 0 || | |
9d38d85d JB |
851 | (wdev->iftype == NL80211_IFTYPE_STATION && |
852 | memcmp(wdev->current_bss->pub.bssid, mgmt->da, | |
fe100acd JB |
853 | ETH_ALEN) != 0)) { |
854 | wdev_unlock(wdev); | |
026331c4 | 855 | return -ENOTCONN; |
fe100acd JB |
856 | } |
857 | ||
858 | wdev_unlock(wdev); | |
026331c4 JM |
859 | } |
860 | ||
861 | if (memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0) | |
862 | return -EINVAL; | |
863 | ||
864 | /* Transmit the Action frame as requested by user space */ | |
865 | return rdev->ops->action(&rdev->wiphy, dev, chan, channel_type, | |
252aa631 | 866 | channel_type_valid, buf, len, cookie); |
026331c4 JM |
867 | } |
868 | ||
869 | bool cfg80211_rx_action(struct net_device *dev, int freq, const u8 *buf, | |
870 | size_t len, gfp_t gfp) | |
871 | { | |
872 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
873 | struct wiphy *wiphy = wdev->wiphy; | |
874 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
875 | struct cfg80211_action_registration *reg; | |
876 | const u8 *action_data; | |
877 | int action_data_len; | |
878 | bool result = false; | |
879 | ||
880 | /* frame length - min size excluding category */ | |
881 | action_data_len = len - (IEEE80211_MIN_ACTION_SIZE - 1); | |
882 | ||
883 | /* action data starts with category */ | |
884 | action_data = buf + IEEE80211_MIN_ACTION_SIZE - 1; | |
885 | ||
886 | spin_lock_bh(&wdev->action_registrations_lock); | |
887 | ||
888 | list_for_each_entry(reg, &wdev->action_registrations, list) { | |
889 | if (reg->match_len > action_data_len) | |
890 | continue; | |
891 | ||
892 | if (memcmp(reg->match, action_data, reg->match_len)) | |
893 | continue; | |
894 | ||
895 | /* found match! */ | |
896 | ||
897 | /* Indicate the received Action frame to user space */ | |
898 | if (nl80211_send_action(rdev, dev, reg->nlpid, freq, | |
899 | buf, len, gfp)) | |
900 | continue; | |
901 | ||
902 | result = true; | |
903 | break; | |
904 | } | |
905 | ||
906 | spin_unlock_bh(&wdev->action_registrations_lock); | |
907 | ||
908 | return result; | |
909 | } | |
910 | EXPORT_SYMBOL(cfg80211_rx_action); | |
911 | ||
912 | void cfg80211_action_tx_status(struct net_device *dev, u64 cookie, | |
913 | const u8 *buf, size_t len, bool ack, gfp_t gfp) | |
914 | { | |
915 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
916 | struct wiphy *wiphy = wdev->wiphy; | |
917 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
918 | ||
919 | /* Indicate TX status of the Action frame to user space */ | |
920 | nl80211_send_action_tx_status(rdev, dev, cookie, buf, len, ack, gfp); | |
921 | } | |
922 | EXPORT_SYMBOL(cfg80211_action_tx_status); | |
d6dc1a38 JO |
923 | |
924 | void cfg80211_cqm_rssi_notify(struct net_device *dev, | |
925 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
926 | gfp_t gfp) | |
927 | { | |
928 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
929 | struct wiphy *wiphy = wdev->wiphy; | |
930 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
931 | ||
932 | /* Indicate roaming trigger event to user space */ | |
933 | nl80211_send_cqm_rssi_notify(rdev, dev, rssi_event, gfp); | |
934 | } | |
935 | EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); |