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ff1d2767 JM |
1 | /* |
2 | * Intersil Prism2 driver with Host AP (software access point) support | |
3 | * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen | |
85d32e7b JM |
4 | * <j@w1.fi> |
5 | * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> | |
ff1d2767 JM |
6 | * |
7 | * This file is to be included into hostap.c when S/W AP functionality is | |
8 | * compiled. | |
9 | * | |
10 | * AP: FIX: | |
11 | * - if unicast Class 2 (assoc,reassoc,disassoc) frame received from | |
12 | * unauthenticated STA, send deauth. frame (8802.11: 5.5) | |
13 | * - if unicast Class 3 (data with to/from DS,deauth,pspoll) frame received | |
14 | * from authenticated, but unassoc STA, send disassoc frame (8802.11: 5.5) | |
15 | * - if unicast Class 3 received from unauthenticated STA, send deauth. frame | |
16 | * (8802.11: 5.5) | |
17 | */ | |
18 | ||
5fad5a2e AB |
19 | #include <linux/proc_fs.h> |
20 | #include <linux/delay.h> | |
21 | #include <linux/random.h> | |
22 | ||
23 | #include "hostap_wlan.h" | |
24 | #include "hostap.h" | |
25 | #include "hostap_ap.h" | |
26 | ||
ff1d2767 JM |
27 | static int other_ap_policy[MAX_PARM_DEVICES] = { AP_OTHER_AP_SKIP_ALL, |
28 | DEF_INTS }; | |
29 | module_param_array(other_ap_policy, int, NULL, 0444); | |
30 | MODULE_PARM_DESC(other_ap_policy, "Other AP beacon monitoring policy (0-3)"); | |
31 | ||
32 | static int ap_max_inactivity[MAX_PARM_DEVICES] = { AP_MAX_INACTIVITY_SEC, | |
33 | DEF_INTS }; | |
34 | module_param_array(ap_max_inactivity, int, NULL, 0444); | |
35 | MODULE_PARM_DESC(ap_max_inactivity, "AP timeout (in seconds) for station " | |
36 | "inactivity"); | |
37 | ||
38 | static int ap_bridge_packets[MAX_PARM_DEVICES] = { 1, DEF_INTS }; | |
39 | module_param_array(ap_bridge_packets, int, NULL, 0444); | |
40 | MODULE_PARM_DESC(ap_bridge_packets, "Bridge packets directly between " | |
41 | "stations"); | |
42 | ||
43 | static int autom_ap_wds[MAX_PARM_DEVICES] = { 0, DEF_INTS }; | |
44 | module_param_array(autom_ap_wds, int, NULL, 0444); | |
45 | MODULE_PARM_DESC(autom_ap_wds, "Add WDS connections to other APs " | |
46 | "automatically"); | |
47 | ||
48 | ||
49 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta); | |
50 | static void hostap_event_expired_sta(struct net_device *dev, | |
51 | struct sta_info *sta); | |
c4028958 | 52 | static void handle_add_proc_queue(struct work_struct *work); |
ff1d2767 JM |
53 | |
54 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 55 | static void handle_wds_oper_queue(struct work_struct *work); |
ff1d2767 | 56 | static void prism2_send_mgmt(struct net_device *dev, |
4339d328 | 57 | u16 type_subtype, char *body, |
ff1d2767 JM |
58 | int body_len, u8 *addr, u16 tx_cb_idx); |
59 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
60 | ||
61 | ||
62 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
63 | static int ap_debug_proc_read(char *page, char **start, off_t off, | |
64 | int count, int *eof, void *data) | |
65 | { | |
66 | char *p = page; | |
67 | struct ap_data *ap = (struct ap_data *) data; | |
68 | ||
69 | if (off != 0) { | |
70 | *eof = 1; | |
71 | return 0; | |
72 | } | |
73 | ||
74 | p += sprintf(p, "BridgedUnicastFrames=%u\n", ap->bridged_unicast); | |
75 | p += sprintf(p, "BridgedMulticastFrames=%u\n", ap->bridged_multicast); | |
76 | p += sprintf(p, "max_inactivity=%u\n", ap->max_inactivity / HZ); | |
77 | p += sprintf(p, "bridge_packets=%u\n", ap->bridge_packets); | |
78 | p += sprintf(p, "nullfunc_ack=%u\n", ap->nullfunc_ack); | |
79 | p += sprintf(p, "autom_ap_wds=%u\n", ap->autom_ap_wds); | |
80 | p += sprintf(p, "auth_algs=%u\n", ap->local->auth_algs); | |
81 | p += sprintf(p, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc); | |
82 | ||
83 | return (p - page); | |
84 | } | |
85 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
86 | ||
87 | ||
88 | static void ap_sta_hash_add(struct ap_data *ap, struct sta_info *sta) | |
89 | { | |
90 | sta->hnext = ap->sta_hash[STA_HASH(sta->addr)]; | |
91 | ap->sta_hash[STA_HASH(sta->addr)] = sta; | |
92 | } | |
93 | ||
94 | static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta) | |
95 | { | |
96 | struct sta_info *s; | |
0795af57 | 97 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
98 | |
99 | s = ap->sta_hash[STA_HASH(sta->addr)]; | |
100 | if (s == NULL) return; | |
101 | if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) { | |
102 | ap->sta_hash[STA_HASH(sta->addr)] = s->hnext; | |
103 | return; | |
104 | } | |
105 | ||
106 | while (s->hnext != NULL && memcmp(s->hnext->addr, sta->addr, ETH_ALEN) | |
107 | != 0) | |
108 | s = s->hnext; | |
109 | if (s->hnext != NULL) | |
110 | s->hnext = s->hnext->hnext; | |
111 | else | |
0795af57 JP |
112 | printk("AP: could not remove STA %s" |
113 | " from hash table\n", | |
114 | print_mac(mac, sta->addr)); | |
ff1d2767 JM |
115 | } |
116 | ||
117 | static void ap_free_sta(struct ap_data *ap, struct sta_info *sta) | |
118 | { | |
0795af57 | 119 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
120 | if (sta->ap && sta->local) |
121 | hostap_event_expired_sta(sta->local->dev, sta); | |
122 | ||
123 | if (ap->proc != NULL) { | |
124 | char name[20]; | |
0795af57 | 125 | sprintf(name, "%s", print_mac(mac, sta->addr)); |
ff1d2767 JM |
126 | remove_proc_entry(name, ap->proc); |
127 | } | |
128 | ||
129 | if (sta->crypt) { | |
130 | sta->crypt->ops->deinit(sta->crypt->priv); | |
131 | kfree(sta->crypt); | |
132 | sta->crypt = NULL; | |
133 | } | |
134 | ||
135 | skb_queue_purge(&sta->tx_buf); | |
136 | ||
137 | ap->num_sta--; | |
138 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
139 | if (sta->aid > 0) | |
140 | ap->sta_aid[sta->aid - 1] = NULL; | |
141 | ||
142 | if (!sta->ap && sta->u.sta.challenge) | |
143 | kfree(sta->u.sta.challenge); | |
144 | del_timer(&sta->timer); | |
145 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
146 | ||
147 | kfree(sta); | |
148 | } | |
149 | ||
150 | ||
151 | static void hostap_set_tim(local_info_t *local, int aid, int set) | |
152 | { | |
153 | if (local->func->set_tim) | |
154 | local->func->set_tim(local->dev, aid, set); | |
155 | } | |
156 | ||
157 | ||
158 | static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta) | |
159 | { | |
160 | union iwreq_data wrqu; | |
161 | memset(&wrqu, 0, sizeof(wrqu)); | |
162 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
163 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
164 | wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL); | |
165 | } | |
166 | ||
167 | ||
168 | static void hostap_event_expired_sta(struct net_device *dev, | |
169 | struct sta_info *sta) | |
170 | { | |
171 | union iwreq_data wrqu; | |
172 | memset(&wrqu, 0, sizeof(wrqu)); | |
173 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
174 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
175 | wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL); | |
176 | } | |
177 | ||
178 | ||
179 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
180 | ||
181 | static void ap_handle_timer(unsigned long data) | |
182 | { | |
183 | struct sta_info *sta = (struct sta_info *) data; | |
184 | local_info_t *local; | |
185 | struct ap_data *ap; | |
186 | unsigned long next_time = 0; | |
187 | int was_assoc; | |
0795af57 | 188 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
189 | |
190 | if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) { | |
191 | PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n"); | |
192 | return; | |
193 | } | |
194 | ||
195 | local = sta->local; | |
196 | ap = local->ap; | |
197 | was_assoc = sta->flags & WLAN_STA_ASSOC; | |
198 | ||
199 | if (atomic_read(&sta->users) != 0) | |
200 | next_time = jiffies + HZ; | |
201 | else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH)) | |
202 | next_time = jiffies + ap->max_inactivity; | |
203 | ||
204 | if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) { | |
205 | /* station activity detected; reset timeout state */ | |
206 | sta->timeout_next = STA_NULLFUNC; | |
207 | next_time = sta->last_rx + ap->max_inactivity; | |
208 | } else if (sta->timeout_next == STA_DISASSOC && | |
209 | !(sta->flags & WLAN_STA_PENDING_POLL)) { | |
210 | /* STA ACKed data nullfunc frame poll */ | |
211 | sta->timeout_next = STA_NULLFUNC; | |
212 | next_time = jiffies + ap->max_inactivity; | |
213 | } | |
214 | ||
215 | if (next_time) { | |
216 | sta->timer.expires = next_time; | |
217 | add_timer(&sta->timer); | |
218 | return; | |
219 | } | |
220 | ||
221 | if (sta->ap) | |
222 | sta->timeout_next = STA_DEAUTH; | |
223 | ||
224 | if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) { | |
225 | spin_lock(&ap->sta_table_lock); | |
226 | ap_sta_hash_del(ap, sta); | |
227 | list_del(&sta->list); | |
228 | spin_unlock(&ap->sta_table_lock); | |
229 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
230 | } else if (sta->timeout_next == STA_DISASSOC) | |
231 | sta->flags &= ~WLAN_STA_ASSOC; | |
232 | ||
233 | if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
234 | hostap_event_expired_sta(local->dev, sta); | |
235 | ||
236 | if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 && | |
237 | !skb_queue_empty(&sta->tx_buf)) { | |
238 | hostap_set_tim(local, sta->aid, 0); | |
239 | sta->flags &= ~WLAN_STA_TIM; | |
240 | } | |
241 | ||
242 | if (sta->ap) { | |
243 | if (ap->autom_ap_wds) { | |
244 | PDEBUG(DEBUG_AP, "%s: removing automatic WDS " | |
0795af57 JP |
245 | "connection to AP %s\n", |
246 | local->dev->name, print_mac(mac, sta->addr)); | |
ff1d2767 JM |
247 | hostap_wds_link_oper(local, sta->addr, WDS_DEL); |
248 | } | |
249 | } else if (sta->timeout_next == STA_NULLFUNC) { | |
250 | /* send data frame to poll STA and check whether this frame | |
251 | * is ACKed */ | |
4339d328 | 252 | /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but |
ff1d2767 JM |
253 | * it is apparently not retried so TX Exc events are not |
254 | * received for it */ | |
255 | sta->flags |= WLAN_STA_PENDING_POLL; | |
4339d328 JM |
256 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA | |
257 | IEEE80211_STYPE_DATA, NULL, 0, | |
ff1d2767 JM |
258 | sta->addr, ap->tx_callback_poll); |
259 | } else { | |
260 | int deauth = sta->timeout_next == STA_DEAUTH; | |
8a9faf3c | 261 | __le16 resp; |
0795af57 | 262 | PDEBUG(DEBUG_AP, "%s: sending %s info to STA %s" |
ff1d2767 JM |
263 | "(last=%lu, jiffies=%lu)\n", |
264 | local->dev->name, | |
265 | deauth ? "deauthentication" : "disassociation", | |
0795af57 | 266 | print_mac(mac, sta->addr), sta->last_rx, jiffies); |
ff1d2767 JM |
267 | |
268 | resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID : | |
269 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
4339d328 JM |
270 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT | |
271 | (deauth ? IEEE80211_STYPE_DEAUTH : | |
272 | IEEE80211_STYPE_DISASSOC), | |
ff1d2767 JM |
273 | (char *) &resp, 2, sta->addr, 0); |
274 | } | |
275 | ||
276 | if (sta->timeout_next == STA_DEAUTH) { | |
277 | if (sta->flags & WLAN_STA_PERM) { | |
0795af57 JP |
278 | PDEBUG(DEBUG_AP, "%s: STA %s" |
279 | " would have been removed, " | |
280 | "but it has 'perm' flag\n", | |
281 | local->dev->name, print_mac(mac, sta->addr)); | |
ff1d2767 JM |
282 | } else |
283 | ap_free_sta(ap, sta); | |
284 | return; | |
285 | } | |
286 | ||
287 | if (sta->timeout_next == STA_NULLFUNC) { | |
288 | sta->timeout_next = STA_DISASSOC; | |
289 | sta->timer.expires = jiffies + AP_DISASSOC_DELAY; | |
290 | } else { | |
291 | sta->timeout_next = STA_DEAUTH; | |
292 | sta->timer.expires = jiffies + AP_DEAUTH_DELAY; | |
293 | } | |
294 | ||
295 | add_timer(&sta->timer); | |
296 | } | |
297 | ||
298 | ||
299 | void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap, | |
300 | int resend) | |
301 | { | |
302 | u8 addr[ETH_ALEN]; | |
8a9faf3c | 303 | __le16 resp; |
ff1d2767 JM |
304 | int i; |
305 | ||
306 | PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name); | |
307 | memset(addr, 0xff, ETH_ALEN); | |
308 | ||
8a9faf3c | 309 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); |
ff1d2767 JM |
310 | |
311 | /* deauth message sent; try to resend it few times; the message is | |
312 | * broadcast, so it may be delayed until next DTIM; there is not much | |
313 | * else we can do at this point since the driver is going to be shut | |
314 | * down */ | |
315 | for (i = 0; i < 5; i++) { | |
4339d328 JM |
316 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
317 | IEEE80211_STYPE_DEAUTH, | |
ff1d2767 JM |
318 | (char *) &resp, 2, addr, 0); |
319 | ||
320 | if (!resend || ap->num_sta <= 0) | |
321 | return; | |
322 | ||
323 | mdelay(50); | |
324 | } | |
325 | } | |
326 | ||
327 | ||
328 | static int ap_control_proc_read(char *page, char **start, off_t off, | |
329 | int count, int *eof, void *data) | |
330 | { | |
331 | char *p = page; | |
332 | struct ap_data *ap = (struct ap_data *) data; | |
333 | char *policy_txt; | |
ff1d2767 | 334 | struct mac_entry *entry; |
0795af57 | 335 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
336 | |
337 | if (off != 0) { | |
338 | *eof = 1; | |
339 | return 0; | |
340 | } | |
341 | ||
342 | switch (ap->mac_restrictions.policy) { | |
343 | case MAC_POLICY_OPEN: | |
344 | policy_txt = "open"; | |
345 | break; | |
346 | case MAC_POLICY_ALLOW: | |
347 | policy_txt = "allow"; | |
348 | break; | |
349 | case MAC_POLICY_DENY: | |
350 | policy_txt = "deny"; | |
351 | break; | |
352 | default: | |
353 | policy_txt = "unknown"; | |
354 | break; | |
355 | }; | |
356 | p += sprintf(p, "MAC policy: %s\n", policy_txt); | |
357 | p += sprintf(p, "MAC entries: %u\n", ap->mac_restrictions.entries); | |
358 | p += sprintf(p, "MAC list:\n"); | |
359 | spin_lock_bh(&ap->mac_restrictions.lock); | |
c1505731 | 360 | list_for_each_entry(entry, &ap->mac_restrictions.mac_list, list) { |
ff1d2767 JM |
361 | if (p - page > PAGE_SIZE - 80) { |
362 | p += sprintf(p, "All entries did not fit one page.\n"); | |
363 | break; | |
364 | } | |
365 | ||
0795af57 | 366 | p += sprintf(p, "%s\n", print_mac(mac, entry->addr)); |
ff1d2767 JM |
367 | } |
368 | spin_unlock_bh(&ap->mac_restrictions.lock); | |
369 | ||
370 | return (p - page); | |
371 | } | |
372 | ||
373 | ||
5fad5a2e | 374 | int ap_control_add_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
ff1d2767 JM |
375 | { |
376 | struct mac_entry *entry; | |
377 | ||
378 | entry = kmalloc(sizeof(struct mac_entry), GFP_KERNEL); | |
379 | if (entry == NULL) | |
380 | return -1; | |
381 | ||
382 | memcpy(entry->addr, mac, ETH_ALEN); | |
383 | ||
384 | spin_lock_bh(&mac_restrictions->lock); | |
385 | list_add_tail(&entry->list, &mac_restrictions->mac_list); | |
386 | mac_restrictions->entries++; | |
387 | spin_unlock_bh(&mac_restrictions->lock); | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | ||
5fad5a2e | 393 | int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
ff1d2767 JM |
394 | { |
395 | struct list_head *ptr; | |
396 | struct mac_entry *entry; | |
397 | ||
398 | spin_lock_bh(&mac_restrictions->lock); | |
399 | for (ptr = mac_restrictions->mac_list.next; | |
400 | ptr != &mac_restrictions->mac_list; ptr = ptr->next) { | |
401 | entry = list_entry(ptr, struct mac_entry, list); | |
402 | ||
403 | if (memcmp(entry->addr, mac, ETH_ALEN) == 0) { | |
404 | list_del(ptr); | |
405 | kfree(entry); | |
406 | mac_restrictions->entries--; | |
407 | spin_unlock_bh(&mac_restrictions->lock); | |
408 | return 0; | |
409 | } | |
410 | } | |
411 | spin_unlock_bh(&mac_restrictions->lock); | |
412 | return -1; | |
413 | } | |
414 | ||
415 | ||
416 | static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions, | |
417 | u8 *mac) | |
418 | { | |
ff1d2767 JM |
419 | struct mac_entry *entry; |
420 | int found = 0; | |
421 | ||
422 | if (mac_restrictions->policy == MAC_POLICY_OPEN) | |
423 | return 0; | |
424 | ||
425 | spin_lock_bh(&mac_restrictions->lock); | |
c1505731 | 426 | list_for_each_entry(entry, &mac_restrictions->mac_list, list) { |
ff1d2767 JM |
427 | if (memcmp(entry->addr, mac, ETH_ALEN) == 0) { |
428 | found = 1; | |
429 | break; | |
430 | } | |
431 | } | |
432 | spin_unlock_bh(&mac_restrictions->lock); | |
433 | ||
434 | if (mac_restrictions->policy == MAC_POLICY_ALLOW) | |
435 | return !found; | |
436 | else | |
437 | return found; | |
438 | } | |
439 | ||
440 | ||
5fad5a2e | 441 | void ap_control_flush_macs(struct mac_restrictions *mac_restrictions) |
ff1d2767 JM |
442 | { |
443 | struct list_head *ptr, *n; | |
444 | struct mac_entry *entry; | |
445 | ||
446 | if (mac_restrictions->entries == 0) | |
447 | return; | |
448 | ||
449 | spin_lock_bh(&mac_restrictions->lock); | |
450 | for (ptr = mac_restrictions->mac_list.next, n = ptr->next; | |
451 | ptr != &mac_restrictions->mac_list; | |
452 | ptr = n, n = ptr->next) { | |
453 | entry = list_entry(ptr, struct mac_entry, list); | |
454 | list_del(ptr); | |
455 | kfree(entry); | |
456 | } | |
457 | mac_restrictions->entries = 0; | |
458 | spin_unlock_bh(&mac_restrictions->lock); | |
459 | } | |
460 | ||
461 | ||
5fad5a2e | 462 | int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac) |
ff1d2767 JM |
463 | { |
464 | struct sta_info *sta; | |
8a9faf3c | 465 | __le16 resp; |
ff1d2767 JM |
466 | |
467 | spin_lock_bh(&ap->sta_table_lock); | |
468 | sta = ap_get_sta(ap, mac); | |
469 | if (sta) { | |
470 | ap_sta_hash_del(ap, sta); | |
471 | list_del(&sta->list); | |
472 | } | |
473 | spin_unlock_bh(&ap->sta_table_lock); | |
474 | ||
475 | if (!sta) | |
476 | return -EINVAL; | |
477 | ||
478 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); | |
4339d328 | 479 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH, |
ff1d2767 JM |
480 | (char *) &resp, 2, sta->addr, 0); |
481 | ||
482 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
483 | hostap_event_expired_sta(dev, sta); | |
484 | ||
485 | ap_free_sta(ap, sta); | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
490 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
491 | ||
492 | ||
5fad5a2e | 493 | void ap_control_kickall(struct ap_data *ap) |
ff1d2767 JM |
494 | { |
495 | struct list_head *ptr, *n; | |
496 | struct sta_info *sta; | |
74fae82c | 497 | |
ff1d2767 JM |
498 | spin_lock_bh(&ap->sta_table_lock); |
499 | for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list; | |
500 | ptr = n, n = ptr->next) { | |
501 | sta = list_entry(ptr, struct sta_info, list); | |
502 | ap_sta_hash_del(ap, sta); | |
503 | list_del(&sta->list); | |
504 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
505 | hostap_event_expired_sta(sta->local->dev, sta); | |
506 | ap_free_sta(ap, sta); | |
507 | } | |
508 | spin_unlock_bh(&ap->sta_table_lock); | |
509 | } | |
510 | ||
511 | ||
512 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
513 | ||
514 | #define PROC_LIMIT (PAGE_SIZE - 80) | |
515 | ||
516 | static int prism2_ap_proc_read(char *page, char **start, off_t off, | |
517 | int count, int *eof, void *data) | |
518 | { | |
519 | char *p = page; | |
520 | struct ap_data *ap = (struct ap_data *) data; | |
c1505731 | 521 | struct sta_info *sta; |
ff1d2767 | 522 | int i; |
0795af57 | 523 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
524 | |
525 | if (off > PROC_LIMIT) { | |
526 | *eof = 1; | |
527 | return 0; | |
528 | } | |
529 | ||
530 | p += sprintf(p, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n"); | |
531 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 532 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
533 | if (!sta->ap) |
534 | continue; | |
535 | ||
0795af57 JP |
536 | p += sprintf(p, "%s %d %d %d %d '", |
537 | print_mac(mac, sta->addr), | |
ff1d2767 JM |
538 | sta->u.ap.channel, sta->last_rx_signal, |
539 | sta->last_rx_silence, sta->last_rx_rate); | |
540 | for (i = 0; i < sta->u.ap.ssid_len; i++) | |
541 | p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 && | |
542 | sta->u.ap.ssid[i] < 127) ? | |
543 | "%c" : "<%02x>"), | |
544 | sta->u.ap.ssid[i]); | |
545 | p += sprintf(p, "'"); | |
546 | if (sta->capability & WLAN_CAPABILITY_ESS) | |
547 | p += sprintf(p, " [ESS]"); | |
548 | if (sta->capability & WLAN_CAPABILITY_IBSS) | |
549 | p += sprintf(p, " [IBSS]"); | |
550 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
551 | p += sprintf(p, " [WEP]"); | |
552 | p += sprintf(p, "\n"); | |
553 | ||
554 | if ((p - page) > PROC_LIMIT) { | |
555 | printk(KERN_DEBUG "hostap: ap proc did not fit\n"); | |
556 | break; | |
557 | } | |
558 | } | |
559 | spin_unlock_bh(&ap->sta_table_lock); | |
560 | ||
561 | if ((p - page) <= off) { | |
562 | *eof = 1; | |
563 | return 0; | |
564 | } | |
565 | ||
566 | *start = page + off; | |
567 | ||
568 | return (p - page - off); | |
569 | } | |
570 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
571 | ||
572 | ||
573 | void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver) | |
574 | { | |
575 | if (!ap) | |
576 | return; | |
577 | ||
578 | if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) { | |
579 | PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - " | |
580 | "firmware upgrade recommended\n"); | |
581 | ap->nullfunc_ack = 1; | |
582 | } else | |
583 | ap->nullfunc_ack = 0; | |
584 | ||
585 | if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) { | |
586 | printk(KERN_WARNING "%s: Warning: secondary station firmware " | |
587 | "version 1.4.2 does not seem to work in Host AP mode\n", | |
588 | ap->local->dev->name); | |
589 | } | |
590 | } | |
591 | ||
592 | ||
593 | /* Called only as a tasklet (software IRQ) */ | |
594 | static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data) | |
595 | { | |
596 | struct ap_data *ap = data; | |
597 | u16 fc; | |
d041674d | 598 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
599 | |
600 | if (!ap->local->hostapd || !ap->local->apdev) { | |
601 | dev_kfree_skb(skb); | |
602 | return; | |
603 | } | |
604 | ||
d041674d | 605 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 606 | fc = le16_to_cpu(hdr->frame_ctl); |
ff1d2767 JM |
607 | |
608 | /* Pass the TX callback frame to the hostapd; use 802.11 header version | |
609 | * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */ | |
610 | ||
b2f4a2e3 | 611 | fc &= ~IEEE80211_FCTL_VERS; |
ff1d2767 | 612 | fc |= ok ? BIT(1) : BIT(0); |
c0f72ca8 | 613 | hdr->frame_ctl = cpu_to_le16(fc); |
ff1d2767 JM |
614 | |
615 | skb->dev = ap->local->apdev; | |
616 | skb_pull(skb, hostap_80211_get_hdrlen(fc)); | |
617 | skb->pkt_type = PACKET_OTHERHOST; | |
618 | skb->protocol = __constant_htons(ETH_P_802_2); | |
619 | memset(skb->cb, 0, sizeof(skb->cb)); | |
620 | netif_rx(skb); | |
621 | } | |
622 | ||
623 | ||
624 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
625 | /* Called only as a tasklet (software IRQ) */ | |
626 | static void hostap_ap_tx_cb_auth(struct sk_buff *skb, int ok, void *data) | |
627 | { | |
628 | struct ap_data *ap = data; | |
629 | struct net_device *dev = ap->local->dev; | |
d041674d | 630 | struct ieee80211_hdr_4addr *hdr; |
8a9faf3c AV |
631 | u16 fc, auth_alg, auth_transaction, status; |
632 | __le16 *pos; | |
ff1d2767 JM |
633 | struct sta_info *sta = NULL; |
634 | char *txt = NULL; | |
635 | ||
636 | if (ap->local->hostapd) { | |
637 | dev_kfree_skb(skb); | |
638 | return; | |
639 | } | |
640 | ||
d041674d | 641 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 642 | fc = le16_to_cpu(hdr->frame_ctl); |
4339d328 JM |
643 | if (WLAN_FC_GET_TYPE(fc) != IEEE80211_FTYPE_MGMT || |
644 | WLAN_FC_GET_STYPE(fc) != IEEE80211_STYPE_AUTH || | |
ff1d2767 JM |
645 | skb->len < IEEE80211_MGMT_HDR_LEN + 6) { |
646 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_auth received invalid " | |
647 | "frame\n", dev->name); | |
648 | dev_kfree_skb(skb); | |
649 | return; | |
650 | } | |
651 | ||
8a9faf3c | 652 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
653 | auth_alg = le16_to_cpu(*pos++); |
654 | auth_transaction = le16_to_cpu(*pos++); | |
655 | status = le16_to_cpu(*pos++); | |
656 | ||
657 | if (!ok) { | |
658 | txt = "frame was not ACKed"; | |
659 | goto done; | |
660 | } | |
661 | ||
662 | spin_lock(&ap->sta_table_lock); | |
663 | sta = ap_get_sta(ap, hdr->addr1); | |
664 | if (sta) | |
665 | atomic_inc(&sta->users); | |
666 | spin_unlock(&ap->sta_table_lock); | |
667 | ||
668 | if (!sta) { | |
669 | txt = "STA not found"; | |
670 | goto done; | |
671 | } | |
672 | ||
673 | if (status == WLAN_STATUS_SUCCESS && | |
674 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || | |
675 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { | |
676 | txt = "STA authenticated"; | |
677 | sta->flags |= WLAN_STA_AUTH; | |
678 | sta->last_auth = jiffies; | |
679 | } else if (status != WLAN_STATUS_SUCCESS) | |
680 | txt = "authentication failed"; | |
681 | ||
682 | done: | |
683 | if (sta) | |
684 | atomic_dec(&sta->users); | |
685 | if (txt) { | |
21f644f3 | 686 | PDEBUG(DEBUG_AP, "%s: " MAC_FMT " auth_cb - alg=%d " |
0795af57 | 687 | "trans#=%d status=%d - %s\n", |
21f644f3 DM |
688 | dev->name, |
689 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
690 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5], | |
691 | auth_alg, auth_transaction, status, txt); | |
ff1d2767 JM |
692 | } |
693 | dev_kfree_skb(skb); | |
694 | } | |
695 | ||
696 | ||
697 | /* Called only as a tasklet (software IRQ) */ | |
698 | static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data) | |
699 | { | |
700 | struct ap_data *ap = data; | |
701 | struct net_device *dev = ap->local->dev; | |
d041674d | 702 | struct ieee80211_hdr_4addr *hdr; |
8a9faf3c AV |
703 | u16 fc, status; |
704 | __le16 *pos; | |
ff1d2767 JM |
705 | struct sta_info *sta = NULL; |
706 | char *txt = NULL; | |
707 | ||
708 | if (ap->local->hostapd) { | |
709 | dev_kfree_skb(skb); | |
710 | return; | |
711 | } | |
712 | ||
d041674d | 713 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 714 | fc = le16_to_cpu(hdr->frame_ctl); |
4339d328 JM |
715 | if (WLAN_FC_GET_TYPE(fc) != IEEE80211_FTYPE_MGMT || |
716 | (WLAN_FC_GET_STYPE(fc) != IEEE80211_STYPE_ASSOC_RESP && | |
717 | WLAN_FC_GET_STYPE(fc) != IEEE80211_STYPE_REASSOC_RESP) || | |
ff1d2767 JM |
718 | skb->len < IEEE80211_MGMT_HDR_LEN + 4) { |
719 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid " | |
720 | "frame\n", dev->name); | |
721 | dev_kfree_skb(skb); | |
722 | return; | |
723 | } | |
724 | ||
725 | if (!ok) { | |
726 | txt = "frame was not ACKed"; | |
727 | goto done; | |
728 | } | |
729 | ||
730 | spin_lock(&ap->sta_table_lock); | |
731 | sta = ap_get_sta(ap, hdr->addr1); | |
732 | if (sta) | |
733 | atomic_inc(&sta->users); | |
734 | spin_unlock(&ap->sta_table_lock); | |
735 | ||
736 | if (!sta) { | |
737 | txt = "STA not found"; | |
738 | goto done; | |
739 | } | |
740 | ||
8a9faf3c | 741 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
742 | pos++; |
743 | status = le16_to_cpu(*pos++); | |
744 | if (status == WLAN_STATUS_SUCCESS) { | |
745 | if (!(sta->flags & WLAN_STA_ASSOC)) | |
746 | hostap_event_new_sta(dev, sta); | |
747 | txt = "STA associated"; | |
748 | sta->flags |= WLAN_STA_ASSOC; | |
749 | sta->last_assoc = jiffies; | |
750 | } else | |
751 | txt = "association failed"; | |
752 | ||
753 | done: | |
754 | if (sta) | |
755 | atomic_dec(&sta->users); | |
756 | if (txt) { | |
21f644f3 DM |
757 | PDEBUG(DEBUG_AP, "%s: " MAC_FMT " assoc_cb - %s\n", |
758 | dev->name, | |
759 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
760 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5], | |
761 | txt); | |
ff1d2767 JM |
762 | } |
763 | dev_kfree_skb(skb); | |
764 | } | |
765 | ||
766 | /* Called only as a tasklet (software IRQ); TX callback for poll frames used | |
767 | * in verifying whether the STA is still present. */ | |
768 | static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data) | |
769 | { | |
770 | struct ap_data *ap = data; | |
d041674d | 771 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
772 | struct sta_info *sta; |
773 | ||
774 | if (skb->len < 24) | |
775 | goto fail; | |
d041674d | 776 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
777 | if (ok) { |
778 | spin_lock(&ap->sta_table_lock); | |
779 | sta = ap_get_sta(ap, hdr->addr1); | |
780 | if (sta) | |
781 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
782 | spin_unlock(&ap->sta_table_lock); | |
783 | } else { | |
21f644f3 | 784 | PDEBUG(DEBUG_AP, "%s: STA " MAC_FMT |
0795af57 | 785 | " did not ACK activity poll frame\n", |
21f644f3 DM |
786 | ap->local->dev->name, |
787 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
788 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]); | |
ff1d2767 JM |
789 | } |
790 | ||
791 | fail: | |
792 | dev_kfree_skb(skb); | |
793 | } | |
794 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
795 | ||
796 | ||
797 | void hostap_init_data(local_info_t *local) | |
798 | { | |
799 | struct ap_data *ap = local->ap; | |
800 | ||
801 | if (ap == NULL) { | |
802 | printk(KERN_WARNING "hostap_init_data: ap == NULL\n"); | |
803 | return; | |
804 | } | |
805 | memset(ap, 0, sizeof(struct ap_data)); | |
806 | ap->local = local; | |
807 | ||
808 | ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx); | |
809 | ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx); | |
810 | ap->max_inactivity = | |
811 | GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ; | |
812 | ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx); | |
813 | ||
814 | spin_lock_init(&ap->sta_table_lock); | |
815 | INIT_LIST_HEAD(&ap->sta_list); | |
816 | ||
817 | /* Initialize task queue structure for AP management */ | |
c4028958 | 818 | INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue); |
ff1d2767 JM |
819 | |
820 | ap->tx_callback_idx = | |
821 | hostap_tx_callback_register(local, hostap_ap_tx_cb, ap); | |
822 | if (ap->tx_callback_idx == 0) | |
823 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
824 | "AP\n", local->dev->name); | |
825 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 826 | INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue); |
ff1d2767 JM |
827 | |
828 | ap->tx_callback_auth = | |
829 | hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap); | |
830 | ap->tx_callback_assoc = | |
831 | hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap); | |
832 | ap->tx_callback_poll = | |
833 | hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap); | |
834 | if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 || | |
835 | ap->tx_callback_poll == 0) | |
836 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
837 | "AP\n", local->dev->name); | |
838 | ||
839 | spin_lock_init(&ap->mac_restrictions.lock); | |
840 | INIT_LIST_HEAD(&ap->mac_restrictions.mac_list); | |
841 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
842 | ||
843 | ap->initialized = 1; | |
844 | } | |
845 | ||
846 | ||
847 | void hostap_init_ap_proc(local_info_t *local) | |
848 | { | |
849 | struct ap_data *ap = local->ap; | |
850 | ||
851 | ap->proc = local->proc; | |
852 | if (ap->proc == NULL) | |
853 | return; | |
854 | ||
855 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
856 | create_proc_read_entry("ap_debug", 0, ap->proc, | |
857 | ap_debug_proc_read, ap); | |
858 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
859 | ||
860 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
861 | create_proc_read_entry("ap_control", 0, ap->proc, | |
862 | ap_control_proc_read, ap); | |
863 | create_proc_read_entry("ap", 0, ap->proc, | |
864 | prism2_ap_proc_read, ap); | |
865 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
866 | ||
867 | } | |
868 | ||
869 | ||
870 | void hostap_free_data(struct ap_data *ap) | |
871 | { | |
c1505731 | 872 | struct sta_info *n, *sta; |
ff1d2767 JM |
873 | |
874 | if (ap == NULL || !ap->initialized) { | |
875 | printk(KERN_DEBUG "hostap_free_data: ap has not yet been " | |
876 | "initialized - skip resource freeing\n"); | |
877 | return; | |
878 | } | |
879 | ||
880 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
881 | if (ap->crypt) | |
882 | ap->crypt->deinit(ap->crypt_priv); | |
883 | ap->crypt = ap->crypt_priv = NULL; | |
884 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
885 | ||
c1505731 | 886 | list_for_each_entry_safe(sta, n, &ap->sta_list, list) { |
ff1d2767 JM |
887 | ap_sta_hash_del(ap, sta); |
888 | list_del(&sta->list); | |
889 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
890 | hostap_event_expired_sta(sta->local->dev, sta); | |
891 | ap_free_sta(ap, sta); | |
892 | } | |
893 | ||
894 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
895 | if (ap->proc != NULL) { | |
896 | remove_proc_entry("ap_debug", ap->proc); | |
897 | } | |
898 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
899 | ||
900 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
901 | if (ap->proc != NULL) { | |
902 | remove_proc_entry("ap", ap->proc); | |
903 | remove_proc_entry("ap_control", ap->proc); | |
904 | } | |
905 | ap_control_flush_macs(&ap->mac_restrictions); | |
906 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
907 | ||
908 | ap->initialized = 0; | |
909 | } | |
910 | ||
911 | ||
912 | /* caller should have mutex for AP STA list handling */ | |
913 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta) | |
914 | { | |
915 | struct sta_info *s; | |
916 | ||
917 | s = ap->sta_hash[STA_HASH(sta)]; | |
918 | while (s != NULL && memcmp(s->addr, sta, ETH_ALEN) != 0) | |
919 | s = s->hnext; | |
920 | return s; | |
921 | } | |
922 | ||
923 | ||
924 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
925 | ||
926 | /* Called from timer handler and from scheduled AP queue handlers */ | |
927 | static void prism2_send_mgmt(struct net_device *dev, | |
4339d328 | 928 | u16 type_subtype, char *body, |
ff1d2767 JM |
929 | int body_len, u8 *addr, u16 tx_cb_idx) |
930 | { | |
931 | struct hostap_interface *iface; | |
932 | local_info_t *local; | |
d041674d | 933 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
934 | u16 fc; |
935 | struct sk_buff *skb; | |
936 | struct hostap_skb_tx_data *meta; | |
937 | int hdrlen; | |
938 | ||
939 | iface = netdev_priv(dev); | |
940 | local = iface->local; | |
941 | dev = local->dev; /* always use master radio device */ | |
942 | iface = netdev_priv(dev); | |
943 | ||
944 | if (!(dev->flags & IFF_UP)) { | |
945 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - " | |
946 | "cannot send frame\n", dev->name); | |
947 | return; | |
948 | } | |
949 | ||
950 | skb = dev_alloc_skb(sizeof(*hdr) + body_len); | |
951 | if (skb == NULL) { | |
952 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate " | |
953 | "skb\n", dev->name); | |
954 | return; | |
955 | } | |
956 | ||
4339d328 | 957 | fc = type_subtype; |
ff1d2767 | 958 | hdrlen = hostap_80211_get_hdrlen(fc); |
d041674d | 959 | hdr = (struct ieee80211_hdr_4addr *) skb_put(skb, hdrlen); |
ff1d2767 JM |
960 | if (body) |
961 | memcpy(skb_put(skb, body_len), body, body_len); | |
962 | ||
963 | memset(hdr, 0, hdrlen); | |
964 | ||
965 | /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11 | |
966 | * tx_control instead of using local->tx_control */ | |
967 | ||
968 | ||
969 | memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */ | |
4339d328 | 970 | if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA) { |
b2f4a2e3 | 971 | fc |= IEEE80211_FCTL_FROMDS; |
ff1d2767 JM |
972 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */ |
973 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */ | |
4339d328 | 974 | } else if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_CTL) { |
ff1d2767 JM |
975 | /* control:ACK does not have addr2 or addr3 */ |
976 | memset(hdr->addr2, 0, ETH_ALEN); | |
977 | memset(hdr->addr3, 0, ETH_ALEN); | |
978 | } else { | |
979 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */ | |
980 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */ | |
981 | } | |
982 | ||
c0f72ca8 | 983 | hdr->frame_ctl = cpu_to_le16(fc); |
ff1d2767 JM |
984 | |
985 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
986 | memset(meta, 0, sizeof(*meta)); | |
987 | meta->magic = HOSTAP_SKB_TX_DATA_MAGIC; | |
988 | meta->iface = iface; | |
989 | meta->tx_cb_idx = tx_cb_idx; | |
990 | ||
991 | skb->dev = dev; | |
459a98ed | 992 | skb_reset_mac_header(skb); |
c1d2bbe1 | 993 | skb_reset_network_header(skb); |
ff1d2767 JM |
994 | dev_queue_xmit(skb); |
995 | } | |
996 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
997 | ||
998 | ||
999 | static int prism2_sta_proc_read(char *page, char **start, off_t off, | |
1000 | int count, int *eof, void *data) | |
1001 | { | |
1002 | char *p = page; | |
1003 | struct sta_info *sta = (struct sta_info *) data; | |
1004 | int i; | |
0795af57 | 1005 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
1006 | |
1007 | /* FIX: possible race condition.. the STA data could have just expired, | |
1008 | * but proc entry was still here so that the read could have started; | |
1009 | * some locking should be done here.. */ | |
1010 | ||
1011 | if (off != 0) { | |
1012 | *eof = 1; | |
1013 | return 0; | |
1014 | } | |
1015 | ||
0795af57 | 1016 | p += sprintf(p, "%s=%s\nusers=%d\naid=%d\n" |
ff1d2767 JM |
1017 | "flags=0x%04x%s%s%s%s%s%s%s\n" |
1018 | "capability=0x%02x\nlisten_interval=%d\nsupported_rates=", | |
1019 | sta->ap ? "AP" : "STA", | |
0795af57 | 1020 | print_mac(mac, sta->addr), atomic_read(&sta->users), sta->aid, |
ff1d2767 JM |
1021 | sta->flags, |
1022 | sta->flags & WLAN_STA_AUTH ? " AUTH" : "", | |
1023 | sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "", | |
1024 | sta->flags & WLAN_STA_PS ? " PS" : "", | |
1025 | sta->flags & WLAN_STA_TIM ? " TIM" : "", | |
1026 | sta->flags & WLAN_STA_PERM ? " PERM" : "", | |
1027 | sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "", | |
1028 | sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "", | |
1029 | sta->capability, sta->listen_interval); | |
1030 | /* supported_rates: 500 kbit/s units with msb ignored */ | |
1031 | for (i = 0; i < sizeof(sta->supported_rates); i++) | |
1032 | if (sta->supported_rates[i] != 0) | |
1033 | p += sprintf(p, "%d%sMbps ", | |
1034 | (sta->supported_rates[i] & 0x7f) / 2, | |
1035 | sta->supported_rates[i] & 1 ? ".5" : ""); | |
1036 | p += sprintf(p, "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n" | |
1037 | "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n" | |
1038 | "tx_packets=%lu\n" | |
1039 | "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n" | |
1040 | "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n" | |
1041 | "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n" | |
1042 | "tx[11M]=%d\n" | |
1043 | "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n", | |
1044 | jiffies, sta->last_auth, sta->last_assoc, sta->last_rx, | |
1045 | sta->last_tx, | |
1046 | sta->rx_packets, sta->tx_packets, sta->rx_bytes, | |
1047 | sta->tx_bytes, skb_queue_len(&sta->tx_buf), | |
1048 | sta->last_rx_silence, | |
1049 | sta->last_rx_signal, sta->last_rx_rate / 10, | |
1050 | sta->last_rx_rate % 10 ? ".5" : "", | |
1051 | sta->tx_rate, sta->tx_count[0], sta->tx_count[1], | |
1052 | sta->tx_count[2], sta->tx_count[3], sta->rx_count[0], | |
1053 | sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]); | |
1054 | if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats) | |
1055 | p = sta->crypt->ops->print_stats(p, sta->crypt->priv); | |
1056 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1057 | if (sta->ap) { | |
1058 | if (sta->u.ap.channel >= 0) | |
1059 | p += sprintf(p, "channel=%d\n", sta->u.ap.channel); | |
1060 | p += sprintf(p, "ssid="); | |
1061 | for (i = 0; i < sta->u.ap.ssid_len; i++) | |
1062 | p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 && | |
1063 | sta->u.ap.ssid[i] < 127) ? | |
1064 | "%c" : "<%02x>"), | |
1065 | sta->u.ap.ssid[i]); | |
1066 | p += sprintf(p, "\n"); | |
1067 | } | |
1068 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1069 | ||
1070 | return (p - page); | |
1071 | } | |
1072 | ||
1073 | ||
c4028958 | 1074 | static void handle_add_proc_queue(struct work_struct *work) |
ff1d2767 | 1075 | { |
c4028958 DH |
1076 | struct ap_data *ap = container_of(work, struct ap_data, |
1077 | add_sta_proc_queue); | |
ff1d2767 JM |
1078 | struct sta_info *sta; |
1079 | char name[20]; | |
1080 | struct add_sta_proc_data *entry, *prev; | |
0795af57 | 1081 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
1082 | |
1083 | entry = ap->add_sta_proc_entries; | |
1084 | ap->add_sta_proc_entries = NULL; | |
1085 | ||
1086 | while (entry) { | |
1087 | spin_lock_bh(&ap->sta_table_lock); | |
1088 | sta = ap_get_sta(ap, entry->addr); | |
1089 | if (sta) | |
1090 | atomic_inc(&sta->users); | |
1091 | spin_unlock_bh(&ap->sta_table_lock); | |
1092 | ||
1093 | if (sta) { | |
0795af57 | 1094 | sprintf(name, "%s", print_mac(mac, sta->addr)); |
ff1d2767 JM |
1095 | sta->proc = create_proc_read_entry( |
1096 | name, 0, ap->proc, | |
1097 | prism2_sta_proc_read, sta); | |
1098 | ||
1099 | atomic_dec(&sta->users); | |
1100 | } | |
1101 | ||
1102 | prev = entry; | |
1103 | entry = entry->next; | |
1104 | kfree(prev); | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | ||
1109 | static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr) | |
1110 | { | |
1111 | struct sta_info *sta; | |
1112 | ||
b0471bb7 | 1113 | sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC); |
ff1d2767 JM |
1114 | if (sta == NULL) { |
1115 | PDEBUG(DEBUG_AP, "AP: kmalloc failed\n"); | |
1116 | return NULL; | |
1117 | } | |
1118 | ||
1119 | /* initialize STA info data */ | |
ff1d2767 JM |
1120 | sta->local = ap->local; |
1121 | skb_queue_head_init(&sta->tx_buf); | |
1122 | memcpy(sta->addr, addr, ETH_ALEN); | |
1123 | ||
1124 | atomic_inc(&sta->users); | |
1125 | spin_lock_bh(&ap->sta_table_lock); | |
1126 | list_add(&sta->list, &ap->sta_list); | |
1127 | ap->num_sta++; | |
1128 | ap_sta_hash_add(ap, sta); | |
1129 | spin_unlock_bh(&ap->sta_table_lock); | |
1130 | ||
1131 | if (ap->proc) { | |
1132 | struct add_sta_proc_data *entry; | |
1133 | /* schedule a non-interrupt context process to add a procfs | |
1134 | * entry for the STA since procfs code use GFP_KERNEL */ | |
1135 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
1136 | if (entry) { | |
1137 | memcpy(entry->addr, sta->addr, ETH_ALEN); | |
1138 | entry->next = ap->add_sta_proc_entries; | |
1139 | ap->add_sta_proc_entries = entry; | |
1140 | schedule_work(&ap->add_sta_proc_queue); | |
1141 | } else | |
1142 | printk(KERN_DEBUG "Failed to add STA proc data\n"); | |
1143 | } | |
1144 | ||
1145 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1146 | init_timer(&sta->timer); | |
1147 | sta->timer.expires = jiffies + ap->max_inactivity; | |
1148 | sta->timer.data = (unsigned long) sta; | |
1149 | sta->timer.function = ap_handle_timer; | |
1150 | if (!ap->local->hostapd) | |
1151 | add_timer(&sta->timer); | |
1152 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1153 | ||
1154 | return sta; | |
1155 | } | |
1156 | ||
1157 | ||
1158 | static int ap_tx_rate_ok(int rateidx, struct sta_info *sta, | |
1159 | local_info_t *local) | |
1160 | { | |
1161 | if (rateidx > sta->tx_max_rate || | |
1162 | !(sta->tx_supp_rates & (1 << rateidx))) | |
1163 | return 0; | |
1164 | ||
1165 | if (local->tx_rate_control != 0 && | |
1166 | !(local->tx_rate_control & (1 << rateidx))) | |
1167 | return 0; | |
1168 | ||
1169 | return 1; | |
1170 | } | |
1171 | ||
1172 | ||
1173 | static void prism2_check_tx_rates(struct sta_info *sta) | |
1174 | { | |
1175 | int i; | |
1176 | ||
1177 | sta->tx_supp_rates = 0; | |
1178 | for (i = 0; i < sizeof(sta->supported_rates); i++) { | |
1179 | if ((sta->supported_rates[i] & 0x7f) == 2) | |
1180 | sta->tx_supp_rates |= WLAN_RATE_1M; | |
1181 | if ((sta->supported_rates[i] & 0x7f) == 4) | |
1182 | sta->tx_supp_rates |= WLAN_RATE_2M; | |
1183 | if ((sta->supported_rates[i] & 0x7f) == 11) | |
1184 | sta->tx_supp_rates |= WLAN_RATE_5M5; | |
1185 | if ((sta->supported_rates[i] & 0x7f) == 22) | |
1186 | sta->tx_supp_rates |= WLAN_RATE_11M; | |
1187 | } | |
1188 | sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0; | |
1189 | if (sta->tx_supp_rates & WLAN_RATE_1M) { | |
1190 | sta->tx_max_rate = 0; | |
1191 | if (ap_tx_rate_ok(0, sta, sta->local)) { | |
1192 | sta->tx_rate = 10; | |
1193 | sta->tx_rate_idx = 0; | |
1194 | } | |
1195 | } | |
1196 | if (sta->tx_supp_rates & WLAN_RATE_2M) { | |
1197 | sta->tx_max_rate = 1; | |
1198 | if (ap_tx_rate_ok(1, sta, sta->local)) { | |
1199 | sta->tx_rate = 20; | |
1200 | sta->tx_rate_idx = 1; | |
1201 | } | |
1202 | } | |
1203 | if (sta->tx_supp_rates & WLAN_RATE_5M5) { | |
1204 | sta->tx_max_rate = 2; | |
1205 | if (ap_tx_rate_ok(2, sta, sta->local)) { | |
1206 | sta->tx_rate = 55; | |
1207 | sta->tx_rate_idx = 2; | |
1208 | } | |
1209 | } | |
1210 | if (sta->tx_supp_rates & WLAN_RATE_11M) { | |
1211 | sta->tx_max_rate = 3; | |
1212 | if (ap_tx_rate_ok(3, sta, sta->local)) { | |
1213 | sta->tx_rate = 110; | |
1214 | sta->tx_rate_idx = 3; | |
1215 | } | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | ||
1220 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1221 | ||
1222 | static void ap_crypt_init(struct ap_data *ap) | |
1223 | { | |
62fe7e37 | 1224 | ap->crypt = ieee80211_get_crypto_ops("WEP"); |
ff1d2767 JM |
1225 | |
1226 | if (ap->crypt) { | |
1227 | if (ap->crypt->init) { | |
1228 | ap->crypt_priv = ap->crypt->init(0); | |
1229 | if (ap->crypt_priv == NULL) | |
1230 | ap->crypt = NULL; | |
1231 | else { | |
1232 | u8 key[WEP_KEY_LEN]; | |
1233 | get_random_bytes(key, WEP_KEY_LEN); | |
1234 | ap->crypt->set_key(key, WEP_KEY_LEN, NULL, | |
1235 | ap->crypt_priv); | |
1236 | } | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | if (ap->crypt == NULL) { | |
1241 | printk(KERN_WARNING "AP could not initialize WEP: load module " | |
62fe7e37 | 1242 | "ieee80211_crypt_wep.ko\n"); |
ff1d2767 JM |
1243 | } |
1244 | } | |
1245 | ||
1246 | ||
1247 | /* Generate challenge data for shared key authentication. IEEE 802.11 specifies | |
1248 | * that WEP algorithm is used for generating challange. This should be unique, | |
1249 | * but otherwise there is not really need for randomness etc. Initialize WEP | |
1250 | * with pseudo random key and then use increasing IV to get unique challenge | |
1251 | * streams. | |
1252 | * | |
1253 | * Called only as a scheduled task for pending AP frames. | |
1254 | */ | |
1255 | static char * ap_auth_make_challenge(struct ap_data *ap) | |
1256 | { | |
1257 | char *tmpbuf; | |
1258 | struct sk_buff *skb; | |
1259 | ||
1260 | if (ap->crypt == NULL) { | |
1261 | ap_crypt_init(ap); | |
1262 | if (ap->crypt == NULL) | |
1263 | return NULL; | |
1264 | } | |
1265 | ||
5cbded58 | 1266 | tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC); |
ff1d2767 JM |
1267 | if (tmpbuf == NULL) { |
1268 | PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n"); | |
1269 | return NULL; | |
1270 | } | |
1271 | ||
1272 | skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN + | |
5bfc819b JK |
1273 | ap->crypt->extra_mpdu_prefix_len + |
1274 | ap->crypt->extra_mpdu_postfix_len); | |
ff1d2767 JM |
1275 | if (skb == NULL) { |
1276 | kfree(tmpbuf); | |
1277 | return NULL; | |
1278 | } | |
1279 | ||
5bfc819b | 1280 | skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len); |
ff1d2767 JM |
1281 | memset(skb_put(skb, WLAN_AUTH_CHALLENGE_LEN), 0, |
1282 | WLAN_AUTH_CHALLENGE_LEN); | |
1283 | if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) { | |
1284 | dev_kfree_skb(skb); | |
1285 | kfree(tmpbuf); | |
1286 | return NULL; | |
1287 | } | |
1288 | ||
d626f62b ACM |
1289 | skb_copy_from_linear_data_offset(skb, ap->crypt->extra_mpdu_prefix_len, |
1290 | tmpbuf, WLAN_AUTH_CHALLENGE_LEN); | |
ff1d2767 JM |
1291 | dev_kfree_skb(skb); |
1292 | ||
1293 | return tmpbuf; | |
1294 | } | |
1295 | ||
1296 | ||
1297 | /* Called only as a scheduled task for pending AP frames. */ | |
1298 | static void handle_authen(local_info_t *local, struct sk_buff *skb, | |
1299 | struct hostap_80211_rx_status *rx_stats) | |
1300 | { | |
1301 | struct net_device *dev = local->dev; | |
d041674d | 1302 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1303 | size_t hdrlen; |
1304 | struct ap_data *ap = local->ap; | |
1305 | char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL; | |
1306 | int len, olen; | |
8a9faf3c AV |
1307 | u16 auth_alg, auth_transaction, status_code; |
1308 | __le16 *pos; | |
ff1d2767 JM |
1309 | u16 resp = WLAN_STATUS_SUCCESS, fc; |
1310 | struct sta_info *sta = NULL; | |
62fe7e37 | 1311 | struct ieee80211_crypt_data *crypt; |
ff1d2767 JM |
1312 | char *txt = ""; |
1313 | ||
1314 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1315 | ||
c0f72ca8 | 1316 | fc = le16_to_cpu(hdr->frame_ctl); |
ff1d2767 JM |
1317 | hdrlen = hostap_80211_get_hdrlen(fc); |
1318 | ||
1319 | if (len < 6) { | |
1320 | PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload " | |
21f644f3 DM |
1321 | "(len=%d) from " MAC_FMT "\n", dev->name, len, |
1322 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1323 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]); | |
ff1d2767 JM |
1324 | return; |
1325 | } | |
1326 | ||
1327 | spin_lock_bh(&local->ap->sta_table_lock); | |
1328 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1329 | if (sta) | |
1330 | atomic_inc(&sta->users); | |
1331 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1332 | ||
1333 | if (sta && sta->crypt) | |
1334 | crypt = sta->crypt; | |
1335 | else { | |
1336 | int idx = 0; | |
1337 | if (skb->len >= hdrlen + 3) | |
1338 | idx = skb->data[hdrlen + 3] >> 6; | |
1339 | crypt = local->crypt[idx]; | |
1340 | } | |
1341 | ||
8a9faf3c | 1342 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
1343 | auth_alg = __le16_to_cpu(*pos); |
1344 | pos++; | |
1345 | auth_transaction = __le16_to_cpu(*pos); | |
1346 | pos++; | |
1347 | status_code = __le16_to_cpu(*pos); | |
1348 | pos++; | |
1349 | ||
1350 | if (memcmp(dev->dev_addr, hdr->addr2, ETH_ALEN) == 0 || | |
1351 | ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) { | |
1352 | txt = "authentication denied"; | |
1353 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1354 | goto fail; | |
1355 | } | |
1356 | ||
1357 | if (((local->auth_algs & PRISM2_AUTH_OPEN) && | |
1358 | auth_alg == WLAN_AUTH_OPEN) || | |
1359 | ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) && | |
1360 | crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) { | |
1361 | } else { | |
1362 | txt = "unsupported algorithm"; | |
1363 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
1364 | goto fail; | |
1365 | } | |
1366 | ||
1367 | if (len >= 8) { | |
1368 | u8 *u = (u8 *) pos; | |
1369 | if (*u == WLAN_EID_CHALLENGE) { | |
1370 | if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) { | |
1371 | txt = "invalid challenge len"; | |
1372 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1373 | goto fail; | |
1374 | } | |
1375 | if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) { | |
1376 | txt = "challenge underflow"; | |
1377 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1378 | goto fail; | |
1379 | } | |
1380 | challenge = (char *) (u + 2); | |
1381 | } | |
1382 | } | |
1383 | ||
1384 | if (sta && sta->ap) { | |
1385 | if (time_after(jiffies, sta->u.ap.last_beacon + | |
1386 | (10 * sta->listen_interval * HZ) / 1024)) { | |
1387 | PDEBUG(DEBUG_AP, "%s: no beacons received for a while," | |
21f644f3 DM |
1388 | " assuming AP " MAC_FMT " is now STA\n", |
1389 | dev->name, | |
1390 | sta->addr[0], sta->addr[1], sta->addr[2], | |
1391 | sta->addr[3], sta->addr[4], sta->addr[5]); | |
ff1d2767 JM |
1392 | sta->ap = 0; |
1393 | sta->flags = 0; | |
1394 | sta->u.sta.challenge = NULL; | |
1395 | } else { | |
1396 | txt = "AP trying to authenticate?"; | |
1397 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1398 | goto fail; | |
1399 | } | |
1400 | } | |
1401 | ||
1402 | if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) || | |
1403 | (auth_alg == WLAN_AUTH_SHARED_KEY && | |
1404 | (auth_transaction == 1 || | |
1405 | (auth_transaction == 3 && sta != NULL && | |
1406 | sta->u.sta.challenge != NULL)))) { | |
1407 | } else { | |
1408 | txt = "unknown authentication transaction number"; | |
1409 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; | |
1410 | goto fail; | |
1411 | } | |
1412 | ||
1413 | if (sta == NULL) { | |
1414 | txt = "new STA"; | |
1415 | ||
1416 | if (local->ap->num_sta >= MAX_STA_COUNT) { | |
1417 | /* FIX: might try to remove some old STAs first? */ | |
1418 | txt = "no more room for new STAs"; | |
1419 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1420 | goto fail; | |
1421 | } | |
1422 | ||
1423 | sta = ap_add_sta(local->ap, hdr->addr2); | |
1424 | if (sta == NULL) { | |
1425 | txt = "ap_add_sta failed"; | |
1426 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1427 | goto fail; | |
1428 | } | |
1429 | } | |
1430 | ||
1431 | switch (auth_alg) { | |
1432 | case WLAN_AUTH_OPEN: | |
1433 | txt = "authOK"; | |
1434 | /* IEEE 802.11 standard is not completely clear about | |
1435 | * whether STA is considered authenticated after | |
1436 | * authentication OK frame has been send or after it | |
1437 | * has been ACKed. In order to reduce interoperability | |
1438 | * issues, mark the STA authenticated before ACK. */ | |
1439 | sta->flags |= WLAN_STA_AUTH; | |
1440 | break; | |
1441 | ||
1442 | case WLAN_AUTH_SHARED_KEY: | |
1443 | if (auth_transaction == 1) { | |
1444 | if (sta->u.sta.challenge == NULL) { | |
1445 | sta->u.sta.challenge = | |
1446 | ap_auth_make_challenge(local->ap); | |
1447 | if (sta->u.sta.challenge == NULL) { | |
1448 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1449 | goto fail; | |
1450 | } | |
1451 | } | |
1452 | } else { | |
1453 | if (sta->u.sta.challenge == NULL || | |
1454 | challenge == NULL || | |
1455 | memcmp(sta->u.sta.challenge, challenge, | |
1456 | WLAN_AUTH_CHALLENGE_LEN) != 0 || | |
831a179f | 1457 | !(fc & IEEE80211_FCTL_PROTECTED)) { |
ff1d2767 JM |
1458 | txt = "challenge response incorrect"; |
1459 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1460 | goto fail; | |
1461 | } | |
1462 | ||
1463 | txt = "challenge OK - authOK"; | |
1464 | /* IEEE 802.11 standard is not completely clear about | |
1465 | * whether STA is considered authenticated after | |
1466 | * authentication OK frame has been send or after it | |
1467 | * has been ACKed. In order to reduce interoperability | |
1468 | * issues, mark the STA authenticated before ACK. */ | |
1469 | sta->flags |= WLAN_STA_AUTH; | |
1470 | kfree(sta->u.sta.challenge); | |
1471 | sta->u.sta.challenge = NULL; | |
1472 | } | |
1473 | break; | |
1474 | } | |
1475 | ||
1476 | fail: | |
8a9faf3c | 1477 | pos = (__le16 *) body; |
ff1d2767 JM |
1478 | *pos = cpu_to_le16(auth_alg); |
1479 | pos++; | |
1480 | *pos = cpu_to_le16(auth_transaction + 1); | |
1481 | pos++; | |
1482 | *pos = cpu_to_le16(resp); /* status_code */ | |
1483 | pos++; | |
1484 | olen = 6; | |
1485 | ||
1486 | if (resp == WLAN_STATUS_SUCCESS && sta != NULL && | |
1487 | sta->u.sta.challenge != NULL && | |
1488 | auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) { | |
1489 | u8 *tmp = (u8 *) pos; | |
1490 | *tmp++ = WLAN_EID_CHALLENGE; | |
1491 | *tmp++ = WLAN_AUTH_CHALLENGE_LEN; | |
1492 | pos++; | |
1493 | memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN); | |
1494 | olen += 2 + WLAN_AUTH_CHALLENGE_LEN; | |
1495 | } | |
1496 | ||
4339d328 | 1497 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH, |
ff1d2767 JM |
1498 | body, olen, hdr->addr2, ap->tx_callback_auth); |
1499 | ||
1500 | if (sta) { | |
1501 | sta->last_rx = jiffies; | |
1502 | atomic_dec(&sta->users); | |
1503 | } | |
1504 | ||
1505 | if (resp) { | |
21f644f3 | 1506 | PDEBUG(DEBUG_AP, "%s: " MAC_FMT " auth (alg=%d " |
0795af57 | 1507 | "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n", |
21f644f3 DM |
1508 | dev->name, |
1509 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1510 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5], | |
1511 | auth_alg, auth_transaction, status_code, len, | |
1512 | fc, resp, txt); | |
ff1d2767 JM |
1513 | } |
1514 | } | |
1515 | ||
1516 | ||
1517 | /* Called only as a scheduled task for pending AP frames. */ | |
1518 | static void handle_assoc(local_info_t *local, struct sk_buff *skb, | |
1519 | struct hostap_80211_rx_status *rx_stats, int reassoc) | |
1520 | { | |
1521 | struct net_device *dev = local->dev; | |
d041674d | 1522 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1523 | char body[12], *p, *lpos; |
1524 | int len, left; | |
8a9faf3c | 1525 | __le16 *pos; |
ff1d2767 JM |
1526 | u16 resp = WLAN_STATUS_SUCCESS; |
1527 | struct sta_info *sta = NULL; | |
1528 | int send_deauth = 0; | |
1529 | char *txt = ""; | |
1530 | u8 prev_ap[ETH_ALEN]; | |
1531 | ||
1532 | left = len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1533 | ||
1534 | if (len < (reassoc ? 10 : 4)) { | |
1535 | PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload " | |
21f644f3 DM |
1536 | "(len=%d, reassoc=%d) from " MAC_FMT "\n", |
1537 | dev->name, len, reassoc, | |
1538 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1539 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]); | |
ff1d2767 JM |
1540 | return; |
1541 | } | |
1542 | ||
1543 | spin_lock_bh(&local->ap->sta_table_lock); | |
1544 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1545 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
1546 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1547 | txt = "trying to associate before authentication"; | |
1548 | send_deauth = 1; | |
1549 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1550 | sta = NULL; /* do not decrement sta->users */ | |
1551 | goto fail; | |
1552 | } | |
1553 | atomic_inc(&sta->users); | |
1554 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1555 | ||
8a9faf3c | 1556 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
1557 | sta->capability = __le16_to_cpu(*pos); |
1558 | pos++; left -= 2; | |
1559 | sta->listen_interval = __le16_to_cpu(*pos); | |
1560 | pos++; left -= 2; | |
1561 | ||
1562 | if (reassoc) { | |
1563 | memcpy(prev_ap, pos, ETH_ALEN); | |
1564 | pos++; pos++; pos++; left -= 6; | |
1565 | } else | |
1566 | memset(prev_ap, 0, ETH_ALEN); | |
1567 | ||
1568 | if (left >= 2) { | |
1569 | unsigned int ileft; | |
1570 | unsigned char *u = (unsigned char *) pos; | |
1571 | ||
1572 | if (*u == WLAN_EID_SSID) { | |
1573 | u++; left--; | |
1574 | ileft = *u; | |
1575 | u++; left--; | |
1576 | ||
1577 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
1578 | txt = "SSID overflow"; | |
1579 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1580 | goto fail; | |
1581 | } | |
1582 | ||
1583 | if (ileft != strlen(local->essid) || | |
1584 | memcmp(local->essid, u, ileft) != 0) { | |
1585 | txt = "not our SSID"; | |
1586 | resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC; | |
1587 | goto fail; | |
1588 | } | |
1589 | ||
1590 | u += ileft; | |
1591 | left -= ileft; | |
1592 | } | |
1593 | ||
1594 | if (left >= 2 && *u == WLAN_EID_SUPP_RATES) { | |
1595 | u++; left--; | |
1596 | ileft = *u; | |
1597 | u++; left--; | |
74fae82c | 1598 | |
ff1d2767 JM |
1599 | if (ileft > left || ileft == 0 || |
1600 | ileft > WLAN_SUPP_RATES_MAX) { | |
1601 | txt = "SUPP_RATES len error"; | |
1602 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1603 | goto fail; | |
1604 | } | |
1605 | ||
1606 | memset(sta->supported_rates, 0, | |
1607 | sizeof(sta->supported_rates)); | |
1608 | memcpy(sta->supported_rates, u, ileft); | |
1609 | prism2_check_tx_rates(sta); | |
1610 | ||
1611 | u += ileft; | |
1612 | left -= ileft; | |
1613 | } | |
1614 | ||
1615 | if (left > 0) { | |
21f644f3 | 1616 | PDEBUG(DEBUG_AP, "%s: assoc from " MAC_FMT |
0795af57 | 1617 | " with extra data (%d bytes) [", |
21f644f3 DM |
1618 | dev->name, |
1619 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1620 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5], | |
1621 | left); | |
ff1d2767 JM |
1622 | while (left > 0) { |
1623 | PDEBUG2(DEBUG_AP, "<%02x>", *u); | |
1624 | u++; left--; | |
1625 | } | |
1626 | PDEBUG2(DEBUG_AP, "]\n"); | |
1627 | } | |
1628 | } else { | |
1629 | txt = "frame underflow"; | |
1630 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1631 | goto fail; | |
1632 | } | |
1633 | ||
1634 | /* get a unique AID */ | |
1635 | if (sta->aid > 0) | |
1636 | txt = "OK, old AID"; | |
1637 | else { | |
1638 | spin_lock_bh(&local->ap->sta_table_lock); | |
1639 | for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++) | |
1640 | if (local->ap->sta_aid[sta->aid - 1] == NULL) | |
1641 | break; | |
1642 | if (sta->aid > MAX_AID_TABLE_SIZE) { | |
1643 | sta->aid = 0; | |
1644 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1645 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1646 | txt = "no room for more AIDs"; | |
1647 | } else { | |
1648 | local->ap->sta_aid[sta->aid - 1] = sta; | |
1649 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1650 | txt = "OK, new AID"; | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | fail: | |
8a9faf3c | 1655 | pos = (__le16 *) body; |
ff1d2767 JM |
1656 | |
1657 | if (send_deauth) { | |
8a9faf3c | 1658 | *pos = cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH); |
ff1d2767 JM |
1659 | pos++; |
1660 | } else { | |
1661 | /* FIX: CF-Pollable and CF-PollReq should be set to match the | |
1662 | * values in beacons/probe responses */ | |
1663 | /* FIX: how about privacy and WEP? */ | |
1664 | /* capability */ | |
8a9faf3c | 1665 | *pos = cpu_to_le16(WLAN_CAPABILITY_ESS); |
ff1d2767 JM |
1666 | pos++; |
1667 | ||
1668 | /* status_code */ | |
8a9faf3c | 1669 | *pos = cpu_to_le16(resp); |
ff1d2767 JM |
1670 | pos++; |
1671 | ||
8a9faf3c | 1672 | *pos = cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) | |
ff1d2767 JM |
1673 | BIT(14) | BIT(15)); /* AID */ |
1674 | pos++; | |
1675 | ||
1676 | /* Supported rates (Information element) */ | |
1677 | p = (char *) pos; | |
1678 | *p++ = WLAN_EID_SUPP_RATES; | |
1679 | lpos = p; | |
1680 | *p++ = 0; /* len */ | |
1681 | if (local->tx_rate_control & WLAN_RATE_1M) { | |
1682 | *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02; | |
1683 | (*lpos)++; | |
1684 | } | |
1685 | if (local->tx_rate_control & WLAN_RATE_2M) { | |
1686 | *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04; | |
1687 | (*lpos)++; | |
1688 | } | |
1689 | if (local->tx_rate_control & WLAN_RATE_5M5) { | |
1690 | *p++ = local->basic_rates & WLAN_RATE_5M5 ? | |
1691 | 0x8b : 0x0b; | |
1692 | (*lpos)++; | |
1693 | } | |
1694 | if (local->tx_rate_control & WLAN_RATE_11M) { | |
1695 | *p++ = local->basic_rates & WLAN_RATE_11M ? | |
1696 | 0x96 : 0x16; | |
1697 | (*lpos)++; | |
1698 | } | |
8a9faf3c | 1699 | pos = (__le16 *) p; |
ff1d2767 JM |
1700 | } |
1701 | ||
4339d328 JM |
1702 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
1703 | (send_deauth ? IEEE80211_STYPE_DEAUTH : | |
1704 | (reassoc ? IEEE80211_STYPE_REASSOC_RESP : | |
1705 | IEEE80211_STYPE_ASSOC_RESP)), | |
ff1d2767 JM |
1706 | body, (u8 *) pos - (u8 *) body, |
1707 | hdr->addr2, | |
1708 | send_deauth ? 0 : local->ap->tx_callback_assoc); | |
1709 | ||
1710 | if (sta) { | |
1711 | if (resp == WLAN_STATUS_SUCCESS) { | |
1712 | sta->last_rx = jiffies; | |
1713 | /* STA will be marked associated from TX callback, if | |
1714 | * AssocResp is ACKed */ | |
1715 | } | |
1716 | atomic_dec(&sta->users); | |
1717 | } | |
1718 | ||
1719 | #if 0 | |
21f644f3 DM |
1720 | PDEBUG(DEBUG_AP, "%s: " MAC_FMT" %sassoc (len=%d " |
1721 | "prev_ap=" MAC_FMT") => %d(%d) (%s)\n", | |
1722 | dev->name, | |
1723 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1724 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5], | |
1725 | reassoc ? "re" : "", len, | |
1726 | prev_ap[0], prev_ap[1], prev_ap[2], | |
1727 | prev_ap[3], prev_ap[4], prev_ap[5], | |
1728 | resp, send_deauth, txt); | |
ff1d2767 JM |
1729 | #endif |
1730 | } | |
1731 | ||
1732 | ||
1733 | /* Called only as a scheduled task for pending AP frames. */ | |
1734 | static void handle_deauth(local_info_t *local, struct sk_buff *skb, | |
1735 | struct hostap_80211_rx_status *rx_stats) | |
1736 | { | |
1737 | struct net_device *dev = local->dev; | |
d041674d | 1738 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1739 | char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
1740 | int len; | |
8a9faf3c AV |
1741 | u16 reason_code; |
1742 | __le16 *pos; | |
ff1d2767 | 1743 | struct sta_info *sta = NULL; |
0795af57 | 1744 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
1745 | |
1746 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1747 | ||
1748 | if (len < 2) { | |
1749 | printk("handle_deauth - too short payload (len=%d)\n", len); | |
1750 | return; | |
1751 | } | |
1752 | ||
8a9faf3c AV |
1753 | pos = (__le16 *) body; |
1754 | reason_code = le16_to_cpu(*pos); | |
ff1d2767 | 1755 | |
21f644f3 DM |
1756 | PDEBUG(DEBUG_AP, "%s: deauthentication: " MAC_FMT " len=%d, " |
1757 | "reason_code=%d\n", dev->name, | |
1758 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1759 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5], | |
1760 | len, reason_code); | |
ff1d2767 JM |
1761 | |
1762 | spin_lock_bh(&local->ap->sta_table_lock); | |
1763 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1764 | if (sta != NULL) { | |
1765 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1766 | hostap_event_expired_sta(local->dev, sta); | |
1767 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
1768 | } | |
1769 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1770 | if (sta == NULL) { | |
21f644f3 | 1771 | printk("%s: deauthentication from " MAC_FMT ", " |
ff1d2767 | 1772 | "reason_code=%d, but STA not authenticated\n", dev->name, |
21f644f3 DM |
1773 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], |
1774 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5], | |
1775 | reason_code); | |
ff1d2767 JM |
1776 | } |
1777 | } | |
1778 | ||
1779 | ||
1780 | /* Called only as a scheduled task for pending AP frames. */ | |
1781 | static void handle_disassoc(local_info_t *local, struct sk_buff *skb, | |
1782 | struct hostap_80211_rx_status *rx_stats) | |
1783 | { | |
1784 | struct net_device *dev = local->dev; | |
d041674d | 1785 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1786 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1787 | int len; | |
8a9faf3c AV |
1788 | u16 reason_code; |
1789 | __le16 *pos; | |
ff1d2767 JM |
1790 | struct sta_info *sta = NULL; |
1791 | ||
1792 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1793 | ||
1794 | if (len < 2) { | |
1795 | printk("handle_disassoc - too short payload (len=%d)\n", len); | |
1796 | return; | |
1797 | } | |
1798 | ||
8a9faf3c AV |
1799 | pos = (__le16 *) body; |
1800 | reason_code = le16_to_cpu(*pos); | |
ff1d2767 | 1801 | |
21f644f3 DM |
1802 | PDEBUG(DEBUG_AP, "%s: disassociation: " MAC_FMT " len=%d, " |
1803 | "reason_code=%d\n", dev->name, | |
1804 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1805 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5], | |
1806 | len, reason_code); | |
ff1d2767 JM |
1807 | |
1808 | spin_lock_bh(&local->ap->sta_table_lock); | |
1809 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1810 | if (sta != NULL) { | |
1811 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1812 | hostap_event_expired_sta(local->dev, sta); | |
1813 | sta->flags &= ~WLAN_STA_ASSOC; | |
1814 | } | |
1815 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1816 | if (sta == NULL) { | |
21f644f3 | 1817 | printk("%s: disassociation from " MAC_FMT ", " |
ff1d2767 | 1818 | "reason_code=%d, but STA not authenticated\n", |
21f644f3 DM |
1819 | dev->name, |
1820 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1821 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5], | |
1822 | reason_code); | |
ff1d2767 JM |
1823 | } |
1824 | } | |
1825 | ||
1826 | ||
1827 | /* Called only as a scheduled task for pending AP frames. */ | |
1828 | static void ap_handle_data_nullfunc(local_info_t *local, | |
d041674d | 1829 | struct ieee80211_hdr_4addr *hdr) |
ff1d2767 JM |
1830 | { |
1831 | struct net_device *dev = local->dev; | |
1832 | ||
1833 | /* some STA f/w's seem to require control::ACK frame for | |
1834 | * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does | |
1835 | * not send this.. | |
1836 | * send control::ACK for the data::nullfunc */ | |
1837 | ||
1838 | printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n"); | |
4339d328 | 1839 | prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK, |
ff1d2767 JM |
1840 | NULL, 0, hdr->addr2, 0); |
1841 | } | |
1842 | ||
1843 | ||
1844 | /* Called only as a scheduled task for pending AP frames. */ | |
1845 | static void ap_handle_dropped_data(local_info_t *local, | |
d041674d | 1846 | struct ieee80211_hdr_4addr *hdr) |
ff1d2767 JM |
1847 | { |
1848 | struct net_device *dev = local->dev; | |
1849 | struct sta_info *sta; | |
8a9faf3c | 1850 | __le16 reason; |
ff1d2767 JM |
1851 | |
1852 | spin_lock_bh(&local->ap->sta_table_lock); | |
1853 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1854 | if (sta) | |
1855 | atomic_inc(&sta->users); | |
1856 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1857 | ||
1858 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) { | |
1859 | PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n"); | |
1860 | atomic_dec(&sta->users); | |
1861 | return; | |
1862 | } | |
1863 | ||
8a9faf3c | 1864 | reason = cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); |
4339d328 | 1865 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
ff1d2767 | 1866 | ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ? |
4339d328 | 1867 | IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC), |
ff1d2767 JM |
1868 | (char *) &reason, sizeof(reason), hdr->addr2, 0); |
1869 | ||
1870 | if (sta) | |
1871 | atomic_dec(&sta->users); | |
1872 | } | |
1873 | ||
1874 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1875 | ||
1876 | ||
1877 | /* Called only as a scheduled task for pending AP frames. */ | |
1878 | static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta, | |
1879 | struct sk_buff *skb) | |
1880 | { | |
5bee720f JM |
1881 | struct hostap_skb_tx_data *meta; |
1882 | ||
ff1d2767 JM |
1883 | if (!(sta->flags & WLAN_STA_PS)) { |
1884 | /* Station has moved to non-PS mode, so send all buffered | |
1885 | * frames using normal device queue. */ | |
1886 | dev_queue_xmit(skb); | |
1887 | return; | |
1888 | } | |
1889 | ||
1890 | /* add a flag for hostap_handle_sta_tx() to know that this skb should | |
1891 | * be passed through even though STA is using PS */ | |
5bee720f JM |
1892 | meta = (struct hostap_skb_tx_data *) skb->cb; |
1893 | meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME; | |
ff1d2767 JM |
1894 | if (!skb_queue_empty(&sta->tx_buf)) { |
1895 | /* indicate to STA that more frames follow */ | |
5bee720f | 1896 | meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA; |
ff1d2767 JM |
1897 | } |
1898 | dev_queue_xmit(skb); | |
1899 | } | |
1900 | ||
1901 | ||
1902 | /* Called only as a scheduled task for pending AP frames. */ | |
1903 | static void handle_pspoll(local_info_t *local, | |
d041674d | 1904 | struct ieee80211_hdr_4addr *hdr, |
ff1d2767 JM |
1905 | struct hostap_80211_rx_status *rx_stats) |
1906 | { | |
1907 | struct net_device *dev = local->dev; | |
1908 | struct sta_info *sta; | |
1909 | u16 aid; | |
1910 | struct sk_buff *skb; | |
1911 | ||
21f644f3 DM |
1912 | PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=" MAC_FMT |
1913 | ", TA=" MAC_FMT " PWRMGT=%d\n", | |
1914 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
1915 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5], | |
1916 | hdr->addr2[0], hdr->addr2[1], hdr->addr2[2], | |
1917 | hdr->addr2[3], hdr->addr2[4], hdr->addr2[5], | |
b2f4a2e3 | 1918 | !!(le16_to_cpu(hdr->frame_ctl) & IEEE80211_FCTL_PM)); |
ff1d2767 JM |
1919 | |
1920 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
21f644f3 DM |
1921 | PDEBUG(DEBUG_AP, "handle_pspoll - addr1(BSSID)=" MAC_FMT |
1922 | " not own MAC\n", | |
1923 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
1924 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]); | |
ff1d2767 JM |
1925 | return; |
1926 | } | |
1927 | ||
8a9faf3c | 1928 | aid = le16_to_cpu(hdr->duration_id); |
ff1d2767 JM |
1929 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) { |
1930 | PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n"); | |
1931 | return; | |
1932 | } | |
1933 | aid &= ~BIT(15) & ~BIT(14); | |
1934 | if (aid == 0 || aid > MAX_AID_TABLE_SIZE) { | |
1935 | PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid); | |
1936 | return; | |
1937 | } | |
1938 | PDEBUG(DEBUG_PS2, " aid=%d\n", aid); | |
1939 | ||
1940 | spin_lock_bh(&local->ap->sta_table_lock); | |
1941 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1942 | if (sta) | |
1943 | atomic_inc(&sta->users); | |
1944 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1945 | ||
1946 | if (sta == NULL) { | |
1947 | PDEBUG(DEBUG_PS, " STA not found\n"); | |
1948 | return; | |
1949 | } | |
1950 | if (sta->aid != aid) { | |
1951 | PDEBUG(DEBUG_PS, " received aid=%i does not match with " | |
1952 | "assoc.aid=%d\n", aid, sta->aid); | |
1953 | return; | |
1954 | } | |
1955 | ||
1956 | /* FIX: todo: | |
1957 | * - add timeout for buffering (clear aid in TIM vector if buffer timed | |
1958 | * out (expiry time must be longer than ListenInterval for | |
1959 | * the corresponding STA; "8802-11: 11.2.1.9 AP aging function" | |
1960 | * - what to do, if buffered, pspolled, and sent frame is not ACKed by | |
1961 | * sta; store buffer for later use and leave TIM aid bit set? use | |
1962 | * TX event to check whether frame was ACKed? | |
1963 | */ | |
1964 | ||
1965 | while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) { | |
1966 | /* send buffered frame .. */ | |
1967 | PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL" | |
1968 | " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf)); | |
1969 | ||
1970 | pspoll_send_buffered(local, sta, skb); | |
1971 | ||
1972 | if (sta->flags & WLAN_STA_PS) { | |
1973 | /* send only one buffered packet per PS Poll */ | |
1974 | /* FIX: should ignore further PS Polls until the | |
1975 | * buffered packet that was just sent is acknowledged | |
1976 | * (Tx or TxExc event) */ | |
1977 | break; | |
1978 | } | |
1979 | } | |
1980 | ||
1981 | if (skb_queue_empty(&sta->tx_buf)) { | |
1982 | /* try to clear aid from TIM */ | |
1983 | if (!(sta->flags & WLAN_STA_TIM)) | |
1984 | PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n", | |
1985 | aid); | |
1986 | hostap_set_tim(local, aid, 0); | |
1987 | sta->flags &= ~WLAN_STA_TIM; | |
1988 | } | |
1989 | ||
1990 | atomic_dec(&sta->users); | |
1991 | } | |
1992 | ||
1993 | ||
1994 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1995 | ||
c4028958 | 1996 | static void handle_wds_oper_queue(struct work_struct *work) |
ff1d2767 | 1997 | { |
c4028958 DH |
1998 | struct ap_data *ap = container_of(work, struct ap_data, |
1999 | wds_oper_queue); | |
2000 | local_info_t *local = ap->local; | |
ff1d2767 JM |
2001 | struct wds_oper_data *entry, *prev; |
2002 | ||
2003 | spin_lock_bh(&local->lock); | |
2004 | entry = local->ap->wds_oper_entries; | |
2005 | local->ap->wds_oper_entries = NULL; | |
2006 | spin_unlock_bh(&local->lock); | |
2007 | ||
2008 | while (entry) { | |
2009 | PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection " | |
21f644f3 | 2010 | "to AP " MAC_FMT "\n", |
ff1d2767 JM |
2011 | local->dev->name, |
2012 | entry->type == WDS_ADD ? "adding" : "removing", | |
21f644f3 DM |
2013 | entry->addr[0], entry->addr[1], entry->addr[2], |
2014 | entry->addr[3], entry->addr[4], entry->addr[5]); | |
ff1d2767 JM |
2015 | if (entry->type == WDS_ADD) |
2016 | prism2_wds_add(local, entry->addr, 0); | |
2017 | else if (entry->type == WDS_DEL) | |
2018 | prism2_wds_del(local, entry->addr, 0, 1); | |
2019 | ||
2020 | prev = entry; | |
2021 | entry = entry->next; | |
2022 | kfree(prev); | |
2023 | } | |
2024 | } | |
2025 | ||
2026 | ||
2027 | /* Called only as a scheduled task for pending AP frames. */ | |
2028 | static void handle_beacon(local_info_t *local, struct sk_buff *skb, | |
2029 | struct hostap_80211_rx_status *rx_stats) | |
2030 | { | |
d041674d | 2031 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
2032 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
2033 | int len, left; | |
8a9faf3c AV |
2034 | u16 beacon_int, capability; |
2035 | __le16 *pos; | |
ff1d2767 JM |
2036 | char *ssid = NULL; |
2037 | unsigned char *supp_rates = NULL; | |
2038 | int ssid_len = 0, supp_rates_len = 0; | |
2039 | struct sta_info *sta = NULL; | |
2040 | int new_sta = 0, channel = -1; | |
2041 | ||
2042 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
2043 | ||
2044 | if (len < 8 + 2 + 2) { | |
2045 | printk(KERN_DEBUG "handle_beacon - too short payload " | |
2046 | "(len=%d)\n", len); | |
2047 | return; | |
2048 | } | |
2049 | ||
8a9faf3c | 2050 | pos = (__le16 *) body; |
ff1d2767 JM |
2051 | left = len; |
2052 | ||
2053 | /* Timestamp (8 octets) */ | |
2054 | pos += 4; left -= 8; | |
2055 | /* Beacon interval (2 octets) */ | |
8a9faf3c | 2056 | beacon_int = le16_to_cpu(*pos); |
ff1d2767 JM |
2057 | pos++; left -= 2; |
2058 | /* Capability information (2 octets) */ | |
8a9faf3c | 2059 | capability = le16_to_cpu(*pos); |
ff1d2767 JM |
2060 | pos++; left -= 2; |
2061 | ||
2062 | if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS && | |
2063 | capability & WLAN_CAPABILITY_IBSS) | |
2064 | return; | |
2065 | ||
2066 | if (left >= 2) { | |
2067 | unsigned int ileft; | |
2068 | unsigned char *u = (unsigned char *) pos; | |
2069 | ||
2070 | if (*u == WLAN_EID_SSID) { | |
2071 | u++; left--; | |
2072 | ileft = *u; | |
2073 | u++; left--; | |
2074 | ||
2075 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
2076 | PDEBUG(DEBUG_AP, "SSID: overflow\n"); | |
2077 | return; | |
2078 | } | |
2079 | ||
2080 | if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID && | |
2081 | (ileft != strlen(local->essid) || | |
2082 | memcmp(local->essid, u, ileft) != 0)) { | |
2083 | /* not our SSID */ | |
2084 | return; | |
2085 | } | |
2086 | ||
2087 | ssid = u; | |
2088 | ssid_len = ileft; | |
2089 | ||
2090 | u += ileft; | |
2091 | left -= ileft; | |
2092 | } | |
2093 | ||
2094 | if (*u == WLAN_EID_SUPP_RATES) { | |
2095 | u++; left--; | |
2096 | ileft = *u; | |
2097 | u++; left--; | |
74fae82c | 2098 | |
ff1d2767 JM |
2099 | if (ileft > left || ileft == 0 || ileft > 8) { |
2100 | PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n"); | |
2101 | return; | |
2102 | } | |
2103 | ||
2104 | supp_rates = u; | |
2105 | supp_rates_len = ileft; | |
2106 | ||
2107 | u += ileft; | |
2108 | left -= ileft; | |
2109 | } | |
2110 | ||
2111 | if (*u == WLAN_EID_DS_PARAMS) { | |
2112 | u++; left--; | |
2113 | ileft = *u; | |
2114 | u++; left--; | |
74fae82c | 2115 | |
ff1d2767 JM |
2116 | if (ileft > left || ileft != 1) { |
2117 | PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n"); | |
2118 | return; | |
2119 | } | |
2120 | ||
2121 | channel = *u; | |
2122 | ||
2123 | u += ileft; | |
2124 | left -= ileft; | |
2125 | } | |
2126 | } | |
2127 | ||
2128 | spin_lock_bh(&local->ap->sta_table_lock); | |
2129 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2130 | if (sta != NULL) | |
2131 | atomic_inc(&sta->users); | |
2132 | spin_unlock_bh(&local->ap->sta_table_lock); | |
2133 | ||
2134 | if (sta == NULL) { | |
2135 | /* add new AP */ | |
2136 | new_sta = 1; | |
2137 | sta = ap_add_sta(local->ap, hdr->addr2); | |
2138 | if (sta == NULL) { | |
2139 | printk(KERN_INFO "prism2: kmalloc failed for AP " | |
2140 | "data structure\n"); | |
2141 | return; | |
2142 | } | |
2143 | hostap_event_new_sta(local->dev, sta); | |
2144 | ||
2145 | /* mark APs authentication and associated for pseudo ad-hoc | |
2146 | * style communication */ | |
2147 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2148 | ||
2149 | if (local->ap->autom_ap_wds) { | |
2150 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | sta->ap = 1; | |
2155 | if (ssid) { | |
2156 | sta->u.ap.ssid_len = ssid_len; | |
2157 | memcpy(sta->u.ap.ssid, ssid, ssid_len); | |
2158 | sta->u.ap.ssid[ssid_len] = '\0'; | |
2159 | } else { | |
2160 | sta->u.ap.ssid_len = 0; | |
2161 | sta->u.ap.ssid[0] = '\0'; | |
2162 | } | |
2163 | sta->u.ap.channel = channel; | |
2164 | sta->rx_packets++; | |
2165 | sta->rx_bytes += len; | |
2166 | sta->u.ap.last_beacon = sta->last_rx = jiffies; | |
2167 | sta->capability = capability; | |
2168 | sta->listen_interval = beacon_int; | |
2169 | ||
2170 | atomic_dec(&sta->users); | |
2171 | ||
2172 | if (new_sta) { | |
2173 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
2174 | memcpy(sta->supported_rates, supp_rates, supp_rates_len); | |
2175 | prism2_check_tx_rates(sta); | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2180 | ||
2181 | ||
2182 | /* Called only as a tasklet. */ | |
2183 | static void handle_ap_item(local_info_t *local, struct sk_buff *skb, | |
2184 | struct hostap_80211_rx_status *rx_stats) | |
2185 | { | |
2186 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2187 | struct net_device *dev = local->dev; | |
2188 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2189 | u16 fc, type, stype; | |
d041674d | 2190 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2191 | |
2192 | /* FIX: should give skb->len to handler functions and check that the | |
2193 | * buffer is long enough */ | |
d041674d | 2194 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 2195 | fc = le16_to_cpu(hdr->frame_ctl); |
4339d328 JM |
2196 | type = WLAN_FC_GET_TYPE(fc); |
2197 | stype = WLAN_FC_GET_STYPE(fc); | |
ff1d2767 JM |
2198 | |
2199 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2200 | if (!local->hostapd && type == IEEE80211_FTYPE_DATA) { |
ff1d2767 JM |
2201 | PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n"); |
2202 | ||
b2f4a2e3 JM |
2203 | if (!(fc & IEEE80211_FCTL_TODS) || |
2204 | (fc & IEEE80211_FCTL_FROMDS)) { | |
4339d328 | 2205 | if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
2206 | /* no ToDS nullfunc seems to be used to check |
2207 | * AP association; so send reject message to | |
2208 | * speed up re-association */ | |
2209 | ap_handle_dropped_data(local, hdr); | |
2210 | goto done; | |
2211 | } | |
2212 | PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n", | |
2213 | fc); | |
2214 | goto done; | |
2215 | } | |
2216 | ||
2217 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
2218 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=" | |
21f644f3 DM |
2219 | MAC_FMT " not own MAC\n", |
2220 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
2221 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]); | |
ff1d2767 JM |
2222 | goto done; |
2223 | } | |
2224 | ||
4339d328 JM |
2225 | if (local->ap->nullfunc_ack && |
2226 | stype == IEEE80211_STYPE_NULLFUNC) | |
ff1d2767 JM |
2227 | ap_handle_data_nullfunc(local, hdr); |
2228 | else | |
2229 | ap_handle_dropped_data(local, hdr); | |
2230 | goto done; | |
2231 | } | |
2232 | ||
4339d328 | 2233 | if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) { |
ff1d2767 JM |
2234 | handle_beacon(local, skb, rx_stats); |
2235 | goto done; | |
2236 | } | |
2237 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2238 | ||
4339d328 | 2239 | if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) { |
ff1d2767 JM |
2240 | handle_pspoll(local, hdr, rx_stats); |
2241 | goto done; | |
2242 | } | |
2243 | ||
2244 | if (local->hostapd) { | |
2245 | PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x " | |
2246 | "subtype=0x%02x\n", type, stype); | |
2247 | goto done; | |
2248 | } | |
2249 | ||
2250 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2251 | if (type != IEEE80211_FTYPE_MGMT) { |
ff1d2767 JM |
2252 | PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n"); |
2253 | goto done; | |
2254 | } | |
2255 | ||
2256 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
21f644f3 DM |
2257 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=" MAC_FMT |
2258 | " not own MAC\n", | |
2259 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
2260 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]); | |
ff1d2767 JM |
2261 | goto done; |
2262 | } | |
2263 | ||
2264 | if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) { | |
21f644f3 DM |
2265 | PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=" MAC_FMT |
2266 | " not own MAC\n", | |
2267 | hdr->addr3[0], hdr->addr3[1], hdr->addr3[2], | |
2268 | hdr->addr3[3], hdr->addr3[4], hdr->addr3[5]); | |
ff1d2767 JM |
2269 | goto done; |
2270 | } | |
2271 | ||
2272 | switch (stype) { | |
4339d328 | 2273 | case IEEE80211_STYPE_ASSOC_REQ: |
ff1d2767 JM |
2274 | handle_assoc(local, skb, rx_stats, 0); |
2275 | break; | |
4339d328 | 2276 | case IEEE80211_STYPE_ASSOC_RESP: |
ff1d2767 JM |
2277 | PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n"); |
2278 | break; | |
4339d328 | 2279 | case IEEE80211_STYPE_REASSOC_REQ: |
ff1d2767 JM |
2280 | handle_assoc(local, skb, rx_stats, 1); |
2281 | break; | |
4339d328 | 2282 | case IEEE80211_STYPE_REASSOC_RESP: |
ff1d2767 JM |
2283 | PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n"); |
2284 | break; | |
4339d328 | 2285 | case IEEE80211_STYPE_ATIM: |
ff1d2767 JM |
2286 | PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n"); |
2287 | break; | |
4339d328 | 2288 | case IEEE80211_STYPE_DISASSOC: |
ff1d2767 JM |
2289 | handle_disassoc(local, skb, rx_stats); |
2290 | break; | |
4339d328 | 2291 | case IEEE80211_STYPE_AUTH: |
ff1d2767 JM |
2292 | handle_authen(local, skb, rx_stats); |
2293 | break; | |
4339d328 | 2294 | case IEEE80211_STYPE_DEAUTH: |
ff1d2767 JM |
2295 | handle_deauth(local, skb, rx_stats); |
2296 | break; | |
2297 | default: | |
4339d328 JM |
2298 | PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n", |
2299 | stype >> 4); | |
ff1d2767 JM |
2300 | break; |
2301 | } | |
2302 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2303 | ||
2304 | done: | |
2305 | dev_kfree_skb(skb); | |
2306 | } | |
2307 | ||
2308 | ||
2309 | /* Called only as a tasklet (software IRQ) */ | |
2310 | void hostap_rx(struct net_device *dev, struct sk_buff *skb, | |
2311 | struct hostap_80211_rx_status *rx_stats) | |
2312 | { | |
2313 | struct hostap_interface *iface; | |
2314 | local_info_t *local; | |
2315 | u16 fc; | |
d041674d | 2316 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2317 | |
2318 | iface = netdev_priv(dev); | |
2319 | local = iface->local; | |
2320 | ||
2321 | if (skb->len < 16) | |
2322 | goto drop; | |
2323 | ||
2324 | local->stats.rx_packets++; | |
2325 | ||
d041674d | 2326 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 2327 | fc = le16_to_cpu(hdr->frame_ctl); |
ff1d2767 JM |
2328 | |
2329 | if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL && | |
4339d328 JM |
2330 | WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_MGMT && |
2331 | WLAN_FC_GET_STYPE(fc) == IEEE80211_STYPE_BEACON) | |
ff1d2767 JM |
2332 | goto drop; |
2333 | ||
2334 | skb->protocol = __constant_htons(ETH_P_HOSTAP); | |
2335 | handle_ap_item(local, skb, rx_stats); | |
2336 | return; | |
2337 | ||
2338 | drop: | |
2339 | dev_kfree_skb(skb); | |
2340 | } | |
2341 | ||
2342 | ||
2343 | /* Called only as a tasklet (software IRQ) */ | |
2344 | static void schedule_packet_send(local_info_t *local, struct sta_info *sta) | |
2345 | { | |
2346 | struct sk_buff *skb; | |
d041674d | 2347 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2348 | struct hostap_80211_rx_status rx_stats; |
2349 | ||
2350 | if (skb_queue_empty(&sta->tx_buf)) | |
2351 | return; | |
2352 | ||
2353 | skb = dev_alloc_skb(16); | |
2354 | if (skb == NULL) { | |
2355 | printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc " | |
2356 | "failed\n", local->dev->name); | |
2357 | return; | |
2358 | } | |
2359 | ||
d041674d | 2360 | hdr = (struct ieee80211_hdr_4addr *) skb_put(skb, 16); |
ff1d2767 JM |
2361 | |
2362 | /* Generate a fake pspoll frame to start packet delivery */ | |
c0f72ca8 | 2363 | hdr->frame_ctl = __constant_cpu_to_le16( |
4339d328 | 2364 | IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); |
ff1d2767 JM |
2365 | memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN); |
2366 | memcpy(hdr->addr2, sta->addr, ETH_ALEN); | |
2367 | hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14)); | |
2368 | ||
0795af57 | 2369 | PDEBUG(DEBUG_PS2, "%s: Scheduling buffered packet delivery for STA " |
21f644f3 DM |
2370 | MAC_FMT "\n", local->dev->name, |
2371 | sta->addr[0], sta->addr[1], sta->addr[2], | |
2372 | sta->addr[3], sta->addr[4], sta->addr[5]); | |
ff1d2767 JM |
2373 | |
2374 | skb->dev = local->dev; | |
2375 | ||
2376 | memset(&rx_stats, 0, sizeof(rx_stats)); | |
2377 | hostap_rx(local->dev, skb, &rx_stats); | |
2378 | } | |
2379 | ||
2380 | ||
5fad5a2e AB |
2381 | int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[], |
2382 | struct iw_quality qual[], int buf_size, | |
2383 | int aplist) | |
ff1d2767 JM |
2384 | { |
2385 | struct ap_data *ap = local->ap; | |
2386 | struct list_head *ptr; | |
2387 | int count = 0; | |
2388 | ||
2389 | spin_lock_bh(&ap->sta_table_lock); | |
2390 | ||
2391 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2392 | ptr = ptr->next) { | |
2393 | struct sta_info *sta = (struct sta_info *) ptr; | |
2394 | ||
2395 | if (aplist && !sta->ap) | |
2396 | continue; | |
2397 | addr[count].sa_family = ARPHRD_ETHER; | |
2398 | memcpy(addr[count].sa_data, sta->addr, ETH_ALEN); | |
2399 | if (sta->last_rx_silence == 0) | |
2400 | qual[count].qual = sta->last_rx_signal < 27 ? | |
2401 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2402 | else | |
2403 | qual[count].qual = sta->last_rx_signal - | |
2404 | sta->last_rx_silence - 35; | |
2405 | qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2406 | qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2407 | qual[count].updated = sta->last_rx_updated; | |
2408 | ||
c28df16e | 2409 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2410 | |
2411 | count++; | |
2412 | if (count >= buf_size) | |
2413 | break; | |
2414 | } | |
2415 | spin_unlock_bh(&ap->sta_table_lock); | |
2416 | ||
2417 | return count; | |
2418 | } | |
2419 | ||
2420 | ||
2421 | /* Translate our list of Access Points & Stations to a card independant | |
2422 | * format that the Wireless Tools will understand - Jean II */ | |
5fad5a2e | 2423 | int prism2_ap_translate_scan(struct net_device *dev, char *buffer) |
ff1d2767 JM |
2424 | { |
2425 | struct hostap_interface *iface; | |
2426 | local_info_t *local; | |
2427 | struct ap_data *ap; | |
2428 | struct list_head *ptr; | |
2429 | struct iw_event iwe; | |
2430 | char *current_ev = buffer; | |
2431 | char *end_buf = buffer + IW_SCAN_MAX_DATA; | |
2432 | #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT) | |
2433 | char buf[64]; | |
2434 | #endif | |
2435 | ||
2436 | iface = netdev_priv(dev); | |
2437 | local = iface->local; | |
2438 | ap = local->ap; | |
2439 | ||
2440 | spin_lock_bh(&ap->sta_table_lock); | |
2441 | ||
2442 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2443 | ptr = ptr->next) { | |
2444 | struct sta_info *sta = (struct sta_info *) ptr; | |
2445 | ||
2446 | /* First entry *MUST* be the AP MAC address */ | |
2447 | memset(&iwe, 0, sizeof(iwe)); | |
2448 | iwe.cmd = SIOCGIWAP; | |
2449 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
2450 | memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN); | |
2451 | iwe.len = IW_EV_ADDR_LEN; | |
2452 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
2453 | IW_EV_ADDR_LEN); | |
2454 | ||
2455 | /* Use the mode to indicate if it's a station or | |
2456 | * an Access Point */ | |
2457 | memset(&iwe, 0, sizeof(iwe)); | |
2458 | iwe.cmd = SIOCGIWMODE; | |
2459 | if (sta->ap) | |
2460 | iwe.u.mode = IW_MODE_MASTER; | |
2461 | else | |
2462 | iwe.u.mode = IW_MODE_INFRA; | |
2463 | iwe.len = IW_EV_UINT_LEN; | |
2464 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
2465 | IW_EV_UINT_LEN); | |
2466 | ||
2467 | /* Some quality */ | |
2468 | memset(&iwe, 0, sizeof(iwe)); | |
2469 | iwe.cmd = IWEVQUAL; | |
2470 | if (sta->last_rx_silence == 0) | |
2471 | iwe.u.qual.qual = sta->last_rx_signal < 27 ? | |
2472 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2473 | else | |
2474 | iwe.u.qual.qual = sta->last_rx_signal - | |
2475 | sta->last_rx_silence - 35; | |
2476 | iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2477 | iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2478 | iwe.u.qual.updated = sta->last_rx_updated; | |
2479 | iwe.len = IW_EV_QUAL_LEN; | |
2480 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
2481 | IW_EV_QUAL_LEN); | |
2482 | ||
2483 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2484 | if (sta->ap) { | |
2485 | memset(&iwe, 0, sizeof(iwe)); | |
2486 | iwe.cmd = SIOCGIWESSID; | |
2487 | iwe.u.data.length = sta->u.ap.ssid_len; | |
2488 | iwe.u.data.flags = 1; | |
2489 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
2490 | &iwe, | |
2491 | sta->u.ap.ssid); | |
2492 | ||
2493 | memset(&iwe, 0, sizeof(iwe)); | |
2494 | iwe.cmd = SIOCGIWENCODE; | |
2495 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
2496 | iwe.u.data.flags = | |
2497 | IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
2498 | else | |
2499 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
2500 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
2501 | &iwe, | |
2502 | sta->u.ap.ssid | |
2503 | /* 0 byte memcpy */); | |
2504 | ||
2505 | if (sta->u.ap.channel > 0 && | |
2506 | sta->u.ap.channel <= FREQ_COUNT) { | |
2507 | memset(&iwe, 0, sizeof(iwe)); | |
2508 | iwe.cmd = SIOCGIWFREQ; | |
2509 | iwe.u.freq.m = freq_list[sta->u.ap.channel - 1] | |
2510 | * 100000; | |
2511 | iwe.u.freq.e = 1; | |
2512 | current_ev = iwe_stream_add_event( | |
2513 | current_ev, end_buf, &iwe, | |
2514 | IW_EV_FREQ_LEN); | |
2515 | } | |
2516 | ||
2517 | memset(&iwe, 0, sizeof(iwe)); | |
2518 | iwe.cmd = IWEVCUSTOM; | |
2519 | sprintf(buf, "beacon_interval=%d", | |
2520 | sta->listen_interval); | |
2521 | iwe.u.data.length = strlen(buf); | |
2522 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
2523 | &iwe, buf); | |
2524 | } | |
2525 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2526 | ||
c28df16e | 2527 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2528 | |
2529 | /* To be continued, we should make good use of IWEVCUSTOM */ | |
2530 | } | |
2531 | ||
2532 | spin_unlock_bh(&ap->sta_table_lock); | |
2533 | ||
2534 | return current_ev - buffer; | |
2535 | } | |
2536 | ||
2537 | ||
2538 | static int prism2_hostapd_add_sta(struct ap_data *ap, | |
2539 | struct prism2_hostapd_param *param) | |
2540 | { | |
2541 | struct sta_info *sta; | |
2542 | ||
2543 | spin_lock_bh(&ap->sta_table_lock); | |
2544 | sta = ap_get_sta(ap, param->sta_addr); | |
2545 | if (sta) | |
2546 | atomic_inc(&sta->users); | |
2547 | spin_unlock_bh(&ap->sta_table_lock); | |
2548 | ||
2549 | if (sta == NULL) { | |
2550 | sta = ap_add_sta(ap, param->sta_addr); | |
2551 | if (sta == NULL) | |
2552 | return -1; | |
2553 | } | |
2554 | ||
2555 | if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2556 | hostap_event_new_sta(sta->local->dev, sta); | |
2557 | ||
2558 | sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2559 | sta->last_rx = jiffies; | |
2560 | sta->aid = param->u.add_sta.aid; | |
2561 | sta->capability = param->u.add_sta.capability; | |
2562 | sta->tx_supp_rates = param->u.add_sta.tx_supp_rates; | |
2563 | if (sta->tx_supp_rates & WLAN_RATE_1M) | |
2564 | sta->supported_rates[0] = 2; | |
2565 | if (sta->tx_supp_rates & WLAN_RATE_2M) | |
2566 | sta->supported_rates[1] = 4; | |
2567 | if (sta->tx_supp_rates & WLAN_RATE_5M5) | |
2568 | sta->supported_rates[2] = 11; | |
2569 | if (sta->tx_supp_rates & WLAN_RATE_11M) | |
2570 | sta->supported_rates[3] = 22; | |
2571 | prism2_check_tx_rates(sta); | |
2572 | atomic_dec(&sta->users); | |
2573 | return 0; | |
2574 | } | |
2575 | ||
2576 | ||
2577 | static int prism2_hostapd_remove_sta(struct ap_data *ap, | |
2578 | struct prism2_hostapd_param *param) | |
2579 | { | |
2580 | struct sta_info *sta; | |
2581 | ||
2582 | spin_lock_bh(&ap->sta_table_lock); | |
2583 | sta = ap_get_sta(ap, param->sta_addr); | |
2584 | if (sta) { | |
2585 | ap_sta_hash_del(ap, sta); | |
2586 | list_del(&sta->list); | |
2587 | } | |
2588 | spin_unlock_bh(&ap->sta_table_lock); | |
2589 | ||
2590 | if (!sta) | |
2591 | return -ENOENT; | |
2592 | ||
2593 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2594 | hostap_event_expired_sta(sta->local->dev, sta); | |
2595 | ap_free_sta(ap, sta); | |
2596 | ||
2597 | return 0; | |
2598 | } | |
2599 | ||
2600 | ||
2601 | static int prism2_hostapd_get_info_sta(struct ap_data *ap, | |
2602 | struct prism2_hostapd_param *param) | |
2603 | { | |
2604 | struct sta_info *sta; | |
2605 | ||
2606 | spin_lock_bh(&ap->sta_table_lock); | |
2607 | sta = ap_get_sta(ap, param->sta_addr); | |
2608 | if (sta) | |
2609 | atomic_inc(&sta->users); | |
2610 | spin_unlock_bh(&ap->sta_table_lock); | |
2611 | ||
2612 | if (!sta) | |
2613 | return -ENOENT; | |
2614 | ||
2615 | param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ; | |
2616 | ||
2617 | atomic_dec(&sta->users); | |
2618 | ||
2619 | return 1; | |
2620 | } | |
2621 | ||
2622 | ||
2623 | static int prism2_hostapd_set_flags_sta(struct ap_data *ap, | |
2624 | struct prism2_hostapd_param *param) | |
2625 | { | |
2626 | struct sta_info *sta; | |
2627 | ||
2628 | spin_lock_bh(&ap->sta_table_lock); | |
2629 | sta = ap_get_sta(ap, param->sta_addr); | |
2630 | if (sta) { | |
2631 | sta->flags |= param->u.set_flags_sta.flags_or; | |
2632 | sta->flags &= param->u.set_flags_sta.flags_and; | |
2633 | } | |
2634 | spin_unlock_bh(&ap->sta_table_lock); | |
2635 | ||
2636 | if (!sta) | |
2637 | return -ENOENT; | |
2638 | ||
2639 | return 0; | |
2640 | } | |
2641 | ||
2642 | ||
2643 | static int prism2_hostapd_sta_clear_stats(struct ap_data *ap, | |
2644 | struct prism2_hostapd_param *param) | |
2645 | { | |
2646 | struct sta_info *sta; | |
2647 | int rate; | |
2648 | ||
2649 | spin_lock_bh(&ap->sta_table_lock); | |
2650 | sta = ap_get_sta(ap, param->sta_addr); | |
2651 | if (sta) { | |
2652 | sta->rx_packets = sta->tx_packets = 0; | |
2653 | sta->rx_bytes = sta->tx_bytes = 0; | |
2654 | for (rate = 0; rate < WLAN_RATE_COUNT; rate++) { | |
2655 | sta->tx_count[rate] = 0; | |
2656 | sta->rx_count[rate] = 0; | |
2657 | } | |
2658 | } | |
2659 | spin_unlock_bh(&ap->sta_table_lock); | |
2660 | ||
2661 | if (!sta) | |
2662 | return -ENOENT; | |
2663 | ||
2664 | return 0; | |
2665 | } | |
2666 | ||
2667 | ||
5fad5a2e | 2668 | int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param) |
ff1d2767 JM |
2669 | { |
2670 | switch (param->cmd) { | |
2671 | case PRISM2_HOSTAPD_FLUSH: | |
2672 | ap_control_kickall(ap); | |
2673 | return 0; | |
2674 | case PRISM2_HOSTAPD_ADD_STA: | |
2675 | return prism2_hostapd_add_sta(ap, param); | |
2676 | case PRISM2_HOSTAPD_REMOVE_STA: | |
2677 | return prism2_hostapd_remove_sta(ap, param); | |
2678 | case PRISM2_HOSTAPD_GET_INFO_STA: | |
2679 | return prism2_hostapd_get_info_sta(ap, param); | |
2680 | case PRISM2_HOSTAPD_SET_FLAGS_STA: | |
2681 | return prism2_hostapd_set_flags_sta(ap, param); | |
2682 | case PRISM2_HOSTAPD_STA_CLEAR_STATS: | |
2683 | return prism2_hostapd_sta_clear_stats(ap, param); | |
2684 | default: | |
2685 | printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n", | |
2686 | param->cmd); | |
2687 | return -EOPNOTSUPP; | |
2688 | } | |
2689 | } | |
2690 | ||
2691 | ||
2692 | /* Update station info for host-based TX rate control and return current | |
2693 | * TX rate */ | |
2694 | static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev) | |
2695 | { | |
2696 | int ret = sta->tx_rate; | |
2697 | struct hostap_interface *iface; | |
2698 | local_info_t *local; | |
2699 | ||
2700 | iface = netdev_priv(dev); | |
2701 | local = iface->local; | |
2702 | ||
2703 | sta->tx_count[sta->tx_rate_idx]++; | |
2704 | sta->tx_since_last_failure++; | |
2705 | sta->tx_consecutive_exc = 0; | |
2706 | if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT && | |
2707 | sta->tx_rate_idx < sta->tx_max_rate) { | |
2708 | /* use next higher rate */ | |
2709 | int old_rate, new_rate; | |
2710 | old_rate = new_rate = sta->tx_rate_idx; | |
2711 | while (new_rate < sta->tx_max_rate) { | |
2712 | new_rate++; | |
2713 | if (ap_tx_rate_ok(new_rate, sta, local)) { | |
2714 | sta->tx_rate_idx = new_rate; | |
2715 | break; | |
2716 | } | |
2717 | } | |
2718 | if (old_rate != sta->tx_rate_idx) { | |
2719 | switch (sta->tx_rate_idx) { | |
2720 | case 0: sta->tx_rate = 10; break; | |
2721 | case 1: sta->tx_rate = 20; break; | |
2722 | case 2: sta->tx_rate = 55; break; | |
2723 | case 3: sta->tx_rate = 110; break; | |
2724 | default: sta->tx_rate = 0; break; | |
2725 | } | |
21f644f3 | 2726 | PDEBUG(DEBUG_AP, "%s: STA " MAC_FMT |
0795af57 | 2727 | " TX rate raised to %d\n", |
21f644f3 DM |
2728 | dev->name, |
2729 | sta->addr[0], sta->addr[1], sta->addr[2], | |
2730 | sta->addr[3], sta->addr[4], sta->addr[5], | |
2731 | sta->tx_rate); | |
ff1d2767 JM |
2732 | } |
2733 | sta->tx_since_last_failure = 0; | |
2734 | } | |
2735 | ||
2736 | return ret; | |
2737 | } | |
2738 | ||
2739 | ||
2740 | /* Called only from software IRQ. Called for each TX frame prior possible | |
2741 | * encryption and transmit. */ | |
2742 | ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx) | |
2743 | { | |
2744 | struct sta_info *sta = NULL; | |
2745 | struct sk_buff *skb = tx->skb; | |
2746 | int set_tim, ret; | |
d041674d | 2747 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2748 | struct hostap_skb_tx_data *meta; |
2749 | ||
2750 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
2751 | ret = AP_TX_CONTINUE; | |
2752 | if (local->ap == NULL || skb->len < 10 || | |
2753 | meta->iface->type == HOSTAP_INTERFACE_STA) | |
2754 | goto out; | |
2755 | ||
d041674d | 2756 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
2757 | |
2758 | if (hdr->addr1[0] & 0x01) { | |
2759 | /* broadcast/multicast frame - no AP related processing */ | |
b9180990 PR |
2760 | if (local->ap->num_sta <= 0) |
2761 | ret = AP_TX_DROP; | |
ff1d2767 JM |
2762 | goto out; |
2763 | } | |
2764 | ||
2765 | /* unicast packet - check whether destination STA is associated */ | |
2766 | spin_lock(&local->ap->sta_table_lock); | |
2767 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2768 | if (sta) | |
2769 | atomic_inc(&sta->users); | |
2770 | spin_unlock(&local->ap->sta_table_lock); | |
2771 | ||
5bee720f JM |
2772 | if (local->iw_mode == IW_MODE_MASTER && sta == NULL && |
2773 | !(meta->flags & HOSTAP_TX_FLAGS_WDS) && | |
ff1d2767 JM |
2774 | meta->iface->type != HOSTAP_INTERFACE_MASTER && |
2775 | meta->iface->type != HOSTAP_INTERFACE_AP) { | |
2776 | #if 0 | |
2777 | /* This can happen, e.g., when wlan0 is added to a bridge and | |
2778 | * bridging code does not know which port is the correct target | |
2779 | * for a unicast frame. In this case, the packet is send to all | |
2780 | * ports of the bridge. Since this is a valid scenario, do not | |
2781 | * print out any errors here. */ | |
2782 | if (net_ratelimit()) { | |
2783 | printk(KERN_DEBUG "AP: drop packet to non-associated " | |
21f644f3 DM |
2784 | "STA " MAC_FMT "\n", |
2785 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
2786 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]); | |
ff1d2767 JM |
2787 | } |
2788 | #endif | |
2789 | local->ap->tx_drop_nonassoc++; | |
2790 | ret = AP_TX_DROP; | |
2791 | goto out; | |
2792 | } | |
2793 | ||
2794 | if (sta == NULL) | |
2795 | goto out; | |
2796 | ||
2797 | if (!(sta->flags & WLAN_STA_AUTHORIZED)) | |
2798 | ret = AP_TX_CONTINUE_NOT_AUTHORIZED; | |
2799 | ||
2800 | /* Set tx_rate if using host-based TX rate control */ | |
2801 | if (!local->fw_tx_rate_control) | |
2802 | local->ap->last_tx_rate = meta->rate = | |
2803 | ap_update_sta_tx_rate(sta, local->dev); | |
2804 | ||
2805 | if (local->iw_mode != IW_MODE_MASTER) | |
2806 | goto out; | |
2807 | ||
2808 | if (!(sta->flags & WLAN_STA_PS)) | |
2809 | goto out; | |
2810 | ||
5bee720f JM |
2811 | if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) { |
2812 | /* indicate to STA that more frames follow */ | |
b2f4a2e3 JM |
2813 | hdr->frame_ctl |= |
2814 | __constant_cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
5bee720f | 2815 | } |
ff1d2767 | 2816 | |
5bee720f JM |
2817 | if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) { |
2818 | /* packet was already buffered and now send due to | |
2819 | * PS poll, so do not rebuffer it */ | |
2820 | goto out; | |
ff1d2767 JM |
2821 | } |
2822 | ||
2823 | if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) { | |
21f644f3 | 2824 | PDEBUG(DEBUG_PS, "%s: No more space in STA (" MAC_FMT |
0795af57 | 2825 | ")'s PS mode buffer\n", |
21f644f3 DM |
2826 | local->dev->name, |
2827 | sta->addr[0], sta->addr[1], sta->addr[2], | |
2828 | sta->addr[3], sta->addr[4], sta->addr[5]); | |
ff1d2767 JM |
2829 | /* Make sure that TIM is set for the station (it might not be |
2830 | * after AP wlan hw reset). */ | |
2831 | /* FIX: should fix hw reset to restore bits based on STA | |
2832 | * buffer state.. */ | |
2833 | hostap_set_tim(local, sta->aid, 1); | |
2834 | sta->flags |= WLAN_STA_TIM; | |
2835 | ret = AP_TX_DROP; | |
2836 | goto out; | |
2837 | } | |
2838 | ||
2839 | /* STA in PS mode, buffer frame for later delivery */ | |
2840 | set_tim = skb_queue_empty(&sta->tx_buf); | |
2841 | skb_queue_tail(&sta->tx_buf, skb); | |
2842 | /* FIX: could save RX time to skb and expire buffered frames after | |
2843 | * some time if STA does not poll for them */ | |
2844 | ||
2845 | if (set_tim) { | |
2846 | if (sta->flags & WLAN_STA_TIM) | |
2847 | PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n", | |
2848 | sta->aid); | |
2849 | hostap_set_tim(local, sta->aid, 1); | |
2850 | sta->flags |= WLAN_STA_TIM; | |
2851 | } | |
2852 | ||
2853 | ret = AP_TX_BUFFERED; | |
2854 | ||
2855 | out: | |
2856 | if (sta != NULL) { | |
2857 | if (ret == AP_TX_CONTINUE || | |
2858 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) { | |
2859 | sta->tx_packets++; | |
2860 | sta->tx_bytes += skb->len; | |
2861 | sta->last_tx = jiffies; | |
2862 | } | |
2863 | ||
2864 | if ((ret == AP_TX_CONTINUE || | |
2865 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) && | |
2866 | sta->crypt && tx->host_encrypt) { | |
2867 | tx->crypt = sta->crypt; | |
2868 | tx->sta_ptr = sta; /* hostap_handle_sta_release() will | |
2869 | * be called to release sta info | |
2870 | * later */ | |
2871 | } else | |
2872 | atomic_dec(&sta->users); | |
2873 | } | |
2874 | ||
2875 | return ret; | |
2876 | } | |
2877 | ||
2878 | ||
2879 | void hostap_handle_sta_release(void *ptr) | |
2880 | { | |
2881 | struct sta_info *sta = ptr; | |
2882 | atomic_dec(&sta->users); | |
2883 | } | |
2884 | ||
2885 | ||
2886 | /* Called only as a tasklet (software IRQ) */ | |
2887 | void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb) | |
2888 | { | |
2889 | struct sta_info *sta; | |
d041674d | 2890 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2891 | struct hostap_skb_tx_data *meta; |
2892 | ||
d041674d | 2893 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
2894 | meta = (struct hostap_skb_tx_data *) skb->cb; |
2895 | ||
2896 | spin_lock(&local->ap->sta_table_lock); | |
2897 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2898 | if (!sta) { | |
2899 | spin_unlock(&local->ap->sta_table_lock); | |
21f644f3 | 2900 | PDEBUG(DEBUG_AP, "%s: Could not find STA " MAC_FMT |
0795af57 | 2901 | " for this TX error (@%lu)\n", |
21f644f3 DM |
2902 | local->dev->name, |
2903 | hdr->addr1[0], hdr->addr1[1], hdr->addr1[2], | |
2904 | hdr->addr1[3], hdr->addr1[4], hdr->addr1[5], | |
2905 | jiffies); | |
ff1d2767 JM |
2906 | return; |
2907 | } | |
2908 | ||
2909 | sta->tx_since_last_failure = 0; | |
2910 | sta->tx_consecutive_exc++; | |
74fae82c | 2911 | |
ff1d2767 JM |
2912 | if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD && |
2913 | sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) { | |
2914 | /* use next lower rate */ | |
2915 | int old, rate; | |
2916 | old = rate = sta->tx_rate_idx; | |
2917 | while (rate > 0) { | |
2918 | rate--; | |
2919 | if (ap_tx_rate_ok(rate, sta, local)) { | |
2920 | sta->tx_rate_idx = rate; | |
2921 | break; | |
2922 | } | |
2923 | } | |
2924 | if (old != sta->tx_rate_idx) { | |
2925 | switch (sta->tx_rate_idx) { | |
2926 | case 0: sta->tx_rate = 10; break; | |
2927 | case 1: sta->tx_rate = 20; break; | |
2928 | case 2: sta->tx_rate = 55; break; | |
2929 | case 3: sta->tx_rate = 110; break; | |
2930 | default: sta->tx_rate = 0; break; | |
2931 | } | |
21f644f3 | 2932 | PDEBUG(DEBUG_AP, "%s: STA " MAC_FMT |
0795af57 | 2933 | " TX rate lowered to %d\n", |
21f644f3 DM |
2934 | local->dev->name, |
2935 | sta->addr[0], sta->addr[1], sta->addr[2], | |
2936 | sta->addr[3], sta->addr[4], sta->addr[5], | |
ff1d2767 JM |
2937 | sta->tx_rate); |
2938 | } | |
2939 | sta->tx_consecutive_exc = 0; | |
2940 | } | |
2941 | spin_unlock(&local->ap->sta_table_lock); | |
2942 | } | |
2943 | ||
2944 | ||
2945 | static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta, | |
2946 | int pwrmgt, int type, int stype) | |
2947 | { | |
0795af57 | 2948 | DECLARE_MAC_BUF(mac); |
ff1d2767 JM |
2949 | if (pwrmgt && !(sta->flags & WLAN_STA_PS)) { |
2950 | sta->flags |= WLAN_STA_PS; | |
0795af57 | 2951 | PDEBUG(DEBUG_PS2, "STA %s changed to use PS " |
ff1d2767 | 2952 | "mode (type=0x%02X, stype=0x%02X)\n", |
0795af57 | 2953 | print_mac(mac, sta->addr), type >> 2, stype >> 4); |
ff1d2767 JM |
2954 | } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) { |
2955 | sta->flags &= ~WLAN_STA_PS; | |
0795af57 | 2956 | PDEBUG(DEBUG_PS2, "STA %s changed to not use " |
ff1d2767 | 2957 | "PS mode (type=0x%02X, stype=0x%02X)\n", |
0795af57 | 2958 | print_mac(mac, sta->addr), type >> 2, stype >> 4); |
4339d328 JM |
2959 | if (type != IEEE80211_FTYPE_CTL || |
2960 | stype != IEEE80211_STYPE_PSPOLL) | |
ff1d2767 JM |
2961 | schedule_packet_send(local, sta); |
2962 | } | |
2963 | } | |
2964 | ||
2965 | ||
2966 | /* Called only as a tasklet (software IRQ). Called for each RX frame to update | |
c0f72ca8 | 2967 | * STA power saving state. pwrmgt is a flag from 802.11 frame_ctl field. */ |
d041674d | 2968 | int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr_4addr *hdr) |
ff1d2767 JM |
2969 | { |
2970 | struct sta_info *sta; | |
2971 | u16 fc; | |
2972 | ||
2973 | spin_lock(&local->ap->sta_table_lock); | |
2974 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2975 | if (sta) | |
2976 | atomic_inc(&sta->users); | |
2977 | spin_unlock(&local->ap->sta_table_lock); | |
2978 | ||
2979 | if (!sta) | |
2980 | return -1; | |
2981 | ||
c0f72ca8 | 2982 | fc = le16_to_cpu(hdr->frame_ctl); |
b2f4a2e3 | 2983 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
4339d328 | 2984 | WLAN_FC_GET_TYPE(fc), WLAN_FC_GET_STYPE(fc)); |
ff1d2767 JM |
2985 | |
2986 | atomic_dec(&sta->users); | |
2987 | return 0; | |
2988 | } | |
2989 | ||
2990 | ||
2991 | /* Called only as a tasklet (software IRQ). Called for each RX frame after | |
2992 | * getting RX header and payload from hardware. */ | |
2993 | ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev, | |
2994 | struct sk_buff *skb, | |
2995 | struct hostap_80211_rx_status *rx_stats, | |
2996 | int wds) | |
2997 | { | |
2998 | int ret; | |
2999 | struct sta_info *sta; | |
3000 | u16 fc, type, stype; | |
d041674d | 3001 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
3002 | |
3003 | if (local->ap == NULL) | |
3004 | return AP_RX_CONTINUE; | |
3005 | ||
d041674d | 3006 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 | 3007 | |
c0f72ca8 | 3008 | fc = le16_to_cpu(hdr->frame_ctl); |
4339d328 JM |
3009 | type = WLAN_FC_GET_TYPE(fc); |
3010 | stype = WLAN_FC_GET_STYPE(fc); | |
ff1d2767 JM |
3011 | |
3012 | spin_lock(&local->ap->sta_table_lock); | |
3013 | sta = ap_get_sta(local->ap, hdr->addr2); | |
3014 | if (sta) | |
3015 | atomic_inc(&sta->users); | |
3016 | spin_unlock(&local->ap->sta_table_lock); | |
3017 | ||
3018 | if (sta && !(sta->flags & WLAN_STA_AUTHORIZED)) | |
3019 | ret = AP_RX_CONTINUE_NOT_AUTHORIZED; | |
3020 | else | |
3021 | ret = AP_RX_CONTINUE; | |
3022 | ||
3023 | ||
b2f4a2e3 | 3024 | if (fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
3025 | if (!wds && (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) { |
3026 | if (local->hostapd) { | |
3027 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
3028 | PRISM2_RX_NON_ASSOC); | |
3029 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
3030 | } else { | |
3031 | printk(KERN_DEBUG "%s: dropped received packet" | |
0795af57 | 3032 | " from non-associated STA " |
21f644f3 | 3033 | MAC_FMT |
ff1d2767 | 3034 | " (type=0x%02x, subtype=0x%02x)\n", |
21f644f3 DM |
3035 | dev->name, |
3036 | hdr->addr2[0], hdr->addr2[1], | |
3037 | hdr->addr2[2], hdr->addr2[3], | |
3038 | hdr->addr2[4], hdr->addr2[5], | |
4339d328 | 3039 | type >> 2, stype >> 4); |
ff1d2767 JM |
3040 | hostap_rx(dev, skb, rx_stats); |
3041 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3042 | } | |
3043 | ret = AP_RX_EXIT; | |
3044 | goto out; | |
3045 | } | |
b2f4a2e3 | 3046 | } else if (fc & IEEE80211_FCTL_FROMDS) { |
ff1d2767 JM |
3047 | if (!wds) { |
3048 | /* FromDS frame - not for us; probably | |
3049 | * broadcast/multicast in another BSS - drop */ | |
3050 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { | |
3051 | printk(KERN_DEBUG "Odd.. FromDS packet " | |
3052 | "received with own BSSID\n"); | |
3053 | hostap_dump_rx_80211(dev->name, skb, rx_stats); | |
3054 | } | |
3055 | ret = AP_RX_DROP; | |
3056 | goto out; | |
3057 | } | |
4339d328 | 3058 | } else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL && |
ff1d2767 JM |
3059 | memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { |
3060 | ||
3061 | if (local->hostapd) { | |
3062 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
3063 | PRISM2_RX_NON_ASSOC); | |
3064 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
3065 | } else { | |
3066 | /* At least Lucent f/w seems to send data::nullfunc | |
3067 | * frames with no ToDS flag when the current AP returns | |
3068 | * after being unavailable for some time. Speed up | |
3069 | * re-association by informing the station about it not | |
3070 | * being associated. */ | |
3071 | printk(KERN_DEBUG "%s: rejected received nullfunc " | |
3072 | "frame without ToDS from not associated STA " | |
21f644f3 DM |
3073 | MAC_FMT "\n", |
3074 | dev->name, | |
3075 | hdr->addr2[0], hdr->addr2[1], | |
3076 | hdr->addr2[2], hdr->addr2[3], | |
3077 | hdr->addr2[4], hdr->addr2[5]); | |
ff1d2767 JM |
3078 | hostap_rx(dev, skb, rx_stats); |
3079 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3080 | } | |
3081 | ret = AP_RX_EXIT; | |
3082 | goto out; | |
4339d328 | 3083 | } else if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
3084 | /* At least Lucent cards seem to send periodic nullfunc |
3085 | * frames with ToDS. Let these through to update SQ | |
3086 | * stats and PS state. Nullfunc frames do not contain | |
3087 | * any data and they will be dropped below. */ | |
3088 | } else { | |
3089 | /* If BSSID (Addr3) is foreign, this frame is a normal | |
3090 | * broadcast frame from an IBSS network. Drop it silently. | |
3091 | * If BSSID is own, report the dropping of this frame. */ | |
3092 | if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { | |
3093 | printk(KERN_DEBUG "%s: dropped received packet from " | |
21f644f3 | 3094 | MAC_FMT " with no ToDS flag " |
0795af57 | 3095 | "(type=0x%02x, subtype=0x%02x)\n", dev->name, |
21f644f3 DM |
3096 | hdr->addr2[0], hdr->addr2[1], |
3097 | hdr->addr2[2], hdr->addr2[3], | |
3098 | hdr->addr2[4], hdr->addr2[5], | |
3099 | type >> 2, stype >> 4); | |
ff1d2767 JM |
3100 | hostap_dump_rx_80211(dev->name, skb, rx_stats); |
3101 | } | |
3102 | ret = AP_RX_DROP; | |
3103 | goto out; | |
3104 | } | |
3105 | ||
3106 | if (sta) { | |
b2f4a2e3 | 3107 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
ff1d2767 JM |
3108 | type, stype); |
3109 | ||
3110 | sta->rx_packets++; | |
3111 | sta->rx_bytes += skb->len; | |
3112 | sta->last_rx = jiffies; | |
3113 | } | |
3114 | ||
4339d328 | 3115 | if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC && |
b2f4a2e3 | 3116 | fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
3117 | if (local->hostapd) { |
3118 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
3119 | PRISM2_RX_NULLFUNC_ACK); | |
3120 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
3121 | } else { | |
3122 | /* some STA f/w's seem to require control::ACK frame | |
3123 | * for data::nullfunc, but Prism2 f/w 0.8.0 (at least | |
3124 | * from Compaq) does not send this.. Try to generate | |
3125 | * ACK for these frames from the host driver to make | |
3126 | * power saving work with, e.g., Lucent WaveLAN f/w */ | |
3127 | hostap_rx(dev, skb, rx_stats); | |
3128 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3129 | } | |
3130 | ret = AP_RX_EXIT; | |
3131 | goto out; | |
3132 | } | |
3133 | ||
3134 | out: | |
3135 | if (sta) | |
3136 | atomic_dec(&sta->users); | |
3137 | ||
3138 | return ret; | |
3139 | } | |
3140 | ||
3141 | ||
3142 | /* Called only as a tasklet (software IRQ) */ | |
3143 | int hostap_handle_sta_crypto(local_info_t *local, | |
d041674d | 3144 | struct ieee80211_hdr_4addr *hdr, |
62fe7e37 JM |
3145 | struct ieee80211_crypt_data **crypt, |
3146 | void **sta_ptr) | |
ff1d2767 JM |
3147 | { |
3148 | struct sta_info *sta; | |
3149 | ||
3150 | spin_lock(&local->ap->sta_table_lock); | |
3151 | sta = ap_get_sta(local->ap, hdr->addr2); | |
3152 | if (sta) | |
3153 | atomic_inc(&sta->users); | |
3154 | spin_unlock(&local->ap->sta_table_lock); | |
3155 | ||
3156 | if (!sta) | |
3157 | return -1; | |
3158 | ||
3159 | if (sta->crypt) { | |
3160 | *crypt = sta->crypt; | |
3161 | *sta_ptr = sta; | |
3162 | /* hostap_handle_sta_release() will be called to release STA | |
3163 | * info */ | |
3164 | } else | |
3165 | atomic_dec(&sta->users); | |
3166 | ||
3167 | return 0; | |
3168 | } | |
3169 | ||
3170 | ||
3171 | /* Called only as a tasklet (software IRQ) */ | |
3172 | int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr) | |
3173 | { | |
3174 | struct sta_info *sta; | |
3175 | int ret = 0; | |
3176 | ||
3177 | spin_lock(&ap->sta_table_lock); | |
3178 | sta = ap_get_sta(ap, sta_addr); | |
3179 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
3180 | ret = 1; | |
3181 | spin_unlock(&ap->sta_table_lock); | |
3182 | ||
3183 | return ret; | |
3184 | } | |
3185 | ||
3186 | ||
3187 | /* Called only as a tasklet (software IRQ) */ | |
3188 | int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr) | |
3189 | { | |
3190 | struct sta_info *sta; | |
3191 | int ret = 0; | |
3192 | ||
3193 | spin_lock(&ap->sta_table_lock); | |
3194 | sta = ap_get_sta(ap, sta_addr); | |
3195 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap && | |
3196 | ((sta->flags & WLAN_STA_AUTHORIZED) || | |
3197 | ap->local->ieee_802_1x == 0)) | |
3198 | ret = 1; | |
3199 | spin_unlock(&ap->sta_table_lock); | |
3200 | ||
3201 | return ret; | |
3202 | } | |
3203 | ||
3204 | ||
3205 | /* Called only as a tasklet (software IRQ) */ | |
3206 | int hostap_add_sta(struct ap_data *ap, u8 *sta_addr) | |
3207 | { | |
3208 | struct sta_info *sta; | |
3209 | int ret = 1; | |
3210 | ||
3211 | if (!ap) | |
3212 | return -1; | |
3213 | ||
3214 | spin_lock(&ap->sta_table_lock); | |
3215 | sta = ap_get_sta(ap, sta_addr); | |
3216 | if (sta) | |
3217 | ret = 0; | |
3218 | spin_unlock(&ap->sta_table_lock); | |
3219 | ||
3220 | if (ret == 1) { | |
3221 | sta = ap_add_sta(ap, sta_addr); | |
3222 | if (!sta) | |
54b85f48 | 3223 | return -1; |
ff1d2767 JM |
3224 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; |
3225 | sta->ap = 1; | |
3226 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
3227 | /* No way of knowing which rates are supported since we did not | |
3228 | * get supported rates element from beacon/assoc req. Assume | |
3229 | * that remote end supports all 802.11b rates. */ | |
3230 | sta->supported_rates[0] = 0x82; | |
3231 | sta->supported_rates[1] = 0x84; | |
3232 | sta->supported_rates[2] = 0x0b; | |
3233 | sta->supported_rates[3] = 0x16; | |
3234 | sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M | | |
3235 | WLAN_RATE_5M5 | WLAN_RATE_11M; | |
3236 | sta->tx_rate = 110; | |
3237 | sta->tx_max_rate = sta->tx_rate_idx = 3; | |
3238 | } | |
3239 | ||
3240 | return ret; | |
3241 | } | |
3242 | ||
3243 | ||
3244 | /* Called only as a tasklet (software IRQ) */ | |
3245 | int hostap_update_rx_stats(struct ap_data *ap, | |
d041674d | 3246 | struct ieee80211_hdr_4addr *hdr, |
ff1d2767 JM |
3247 | struct hostap_80211_rx_status *rx_stats) |
3248 | { | |
3249 | struct sta_info *sta; | |
3250 | ||
3251 | if (!ap) | |
3252 | return -1; | |
3253 | ||
3254 | spin_lock(&ap->sta_table_lock); | |
3255 | sta = ap_get_sta(ap, hdr->addr2); | |
3256 | if (sta) { | |
3257 | sta->last_rx_silence = rx_stats->noise; | |
3258 | sta->last_rx_signal = rx_stats->signal; | |
3259 | sta->last_rx_rate = rx_stats->rate; | |
c28df16e | 3260 | sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
ff1d2767 JM |
3261 | if (rx_stats->rate == 10) |
3262 | sta->rx_count[0]++; | |
3263 | else if (rx_stats->rate == 20) | |
3264 | sta->rx_count[1]++; | |
3265 | else if (rx_stats->rate == 55) | |
3266 | sta->rx_count[2]++; | |
3267 | else if (rx_stats->rate == 110) | |
3268 | sta->rx_count[3]++; | |
3269 | } | |
3270 | spin_unlock(&ap->sta_table_lock); | |
3271 | ||
3272 | return sta ? 0 : -1; | |
3273 | } | |
3274 | ||
3275 | ||
3276 | void hostap_update_rates(local_info_t *local) | |
3277 | { | |
c1505731 | 3278 | struct sta_info *sta; |
ff1d2767 JM |
3279 | struct ap_data *ap = local->ap; |
3280 | ||
3281 | if (!ap) | |
3282 | return; | |
3283 | ||
3284 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 3285 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
3286 | prism2_check_tx_rates(sta); |
3287 | } | |
3288 | spin_unlock_bh(&ap->sta_table_lock); | |
3289 | } | |
3290 | ||
3291 | ||
5fad5a2e AB |
3292 | void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent, |
3293 | struct ieee80211_crypt_data ***crypt) | |
ff1d2767 JM |
3294 | { |
3295 | struct sta_info *sta; | |
3296 | ||
3297 | spin_lock_bh(&ap->sta_table_lock); | |
3298 | sta = ap_get_sta(ap, addr); | |
3299 | if (sta) | |
3300 | atomic_inc(&sta->users); | |
3301 | spin_unlock_bh(&ap->sta_table_lock); | |
3302 | ||
3303 | if (!sta && permanent) | |
3304 | sta = ap_add_sta(ap, addr); | |
3305 | ||
3306 | if (!sta) | |
3307 | return NULL; | |
3308 | ||
3309 | if (permanent) | |
3310 | sta->flags |= WLAN_STA_PERM; | |
3311 | ||
3312 | *crypt = &sta->crypt; | |
3313 | ||
3314 | return sta; | |
3315 | } | |
3316 | ||
3317 | ||
3318 | void hostap_add_wds_links(local_info_t *local) | |
3319 | { | |
3320 | struct ap_data *ap = local->ap; | |
c1505731 | 3321 | struct sta_info *sta; |
ff1d2767 JM |
3322 | |
3323 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 3324 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
3325 | if (sta->ap) |
3326 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
3327 | } | |
3328 | spin_unlock_bh(&ap->sta_table_lock); | |
3329 | ||
3330 | schedule_work(&local->ap->wds_oper_queue); | |
3331 | } | |
3332 | ||
3333 | ||
3334 | void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type) | |
3335 | { | |
3336 | struct wds_oper_data *entry; | |
3337 | ||
3338 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
3339 | if (!entry) | |
3340 | return; | |
3341 | memcpy(entry->addr, addr, ETH_ALEN); | |
3342 | entry->type = type; | |
3343 | spin_lock_bh(&local->lock); | |
3344 | entry->next = local->ap->wds_oper_entries; | |
3345 | local->ap->wds_oper_entries = entry; | |
3346 | spin_unlock_bh(&local->lock); | |
3347 | ||
3348 | schedule_work(&local->ap->wds_oper_queue); | |
3349 | } | |
3350 | ||
3351 | ||
3352 | EXPORT_SYMBOL(hostap_init_data); | |
3353 | EXPORT_SYMBOL(hostap_init_ap_proc); | |
3354 | EXPORT_SYMBOL(hostap_free_data); | |
3355 | EXPORT_SYMBOL(hostap_check_sta_fw_version); | |
ff1d2767 | 3356 | EXPORT_SYMBOL(hostap_handle_sta_tx_exc); |
ff1d2767 | 3357 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
ff1d2767 | 3358 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |