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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 | |
4 | * <jkmaline@cc.hut.fi> | |
62fe7e37 | 5 | * Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.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; | |
97 | ||
98 | s = ap->sta_hash[STA_HASH(sta->addr)]; | |
99 | if (s == NULL) return; | |
100 | if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) { | |
101 | ap->sta_hash[STA_HASH(sta->addr)] = s->hnext; | |
102 | return; | |
103 | } | |
104 | ||
105 | while (s->hnext != NULL && memcmp(s->hnext->addr, sta->addr, ETH_ALEN) | |
106 | != 0) | |
107 | s = s->hnext; | |
108 | if (s->hnext != NULL) | |
109 | s->hnext = s->hnext->hnext; | |
110 | else | |
111 | printk("AP: could not remove STA " MACSTR " from hash table\n", | |
112 | MAC2STR(sta->addr)); | |
113 | } | |
114 | ||
115 | static void ap_free_sta(struct ap_data *ap, struct sta_info *sta) | |
116 | { | |
117 | if (sta->ap && sta->local) | |
118 | hostap_event_expired_sta(sta->local->dev, sta); | |
119 | ||
120 | if (ap->proc != NULL) { | |
121 | char name[20]; | |
122 | sprintf(name, MACSTR, MAC2STR(sta->addr)); | |
123 | remove_proc_entry(name, ap->proc); | |
124 | } | |
125 | ||
126 | if (sta->crypt) { | |
127 | sta->crypt->ops->deinit(sta->crypt->priv); | |
128 | kfree(sta->crypt); | |
129 | sta->crypt = NULL; | |
130 | } | |
131 | ||
132 | skb_queue_purge(&sta->tx_buf); | |
133 | ||
134 | ap->num_sta--; | |
135 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
136 | if (sta->aid > 0) | |
137 | ap->sta_aid[sta->aid - 1] = NULL; | |
138 | ||
139 | if (!sta->ap && sta->u.sta.challenge) | |
140 | kfree(sta->u.sta.challenge); | |
141 | del_timer(&sta->timer); | |
142 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
143 | ||
144 | kfree(sta); | |
145 | } | |
146 | ||
147 | ||
148 | static void hostap_set_tim(local_info_t *local, int aid, int set) | |
149 | { | |
150 | if (local->func->set_tim) | |
151 | local->func->set_tim(local->dev, aid, set); | |
152 | } | |
153 | ||
154 | ||
155 | static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta) | |
156 | { | |
157 | union iwreq_data wrqu; | |
158 | memset(&wrqu, 0, sizeof(wrqu)); | |
159 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
160 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
161 | wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL); | |
162 | } | |
163 | ||
164 | ||
165 | static void hostap_event_expired_sta(struct net_device *dev, | |
166 | struct sta_info *sta) | |
167 | { | |
168 | union iwreq_data wrqu; | |
169 | memset(&wrqu, 0, sizeof(wrqu)); | |
170 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
171 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
172 | wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL); | |
173 | } | |
174 | ||
175 | ||
176 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
177 | ||
178 | static void ap_handle_timer(unsigned long data) | |
179 | { | |
180 | struct sta_info *sta = (struct sta_info *) data; | |
181 | local_info_t *local; | |
182 | struct ap_data *ap; | |
183 | unsigned long next_time = 0; | |
184 | int was_assoc; | |
185 | ||
186 | if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) { | |
187 | PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n"); | |
188 | return; | |
189 | } | |
190 | ||
191 | local = sta->local; | |
192 | ap = local->ap; | |
193 | was_assoc = sta->flags & WLAN_STA_ASSOC; | |
194 | ||
195 | if (atomic_read(&sta->users) != 0) | |
196 | next_time = jiffies + HZ; | |
197 | else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH)) | |
198 | next_time = jiffies + ap->max_inactivity; | |
199 | ||
200 | if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) { | |
201 | /* station activity detected; reset timeout state */ | |
202 | sta->timeout_next = STA_NULLFUNC; | |
203 | next_time = sta->last_rx + ap->max_inactivity; | |
204 | } else if (sta->timeout_next == STA_DISASSOC && | |
205 | !(sta->flags & WLAN_STA_PENDING_POLL)) { | |
206 | /* STA ACKed data nullfunc frame poll */ | |
207 | sta->timeout_next = STA_NULLFUNC; | |
208 | next_time = jiffies + ap->max_inactivity; | |
209 | } | |
210 | ||
211 | if (next_time) { | |
212 | sta->timer.expires = next_time; | |
213 | add_timer(&sta->timer); | |
214 | return; | |
215 | } | |
216 | ||
217 | if (sta->ap) | |
218 | sta->timeout_next = STA_DEAUTH; | |
219 | ||
220 | if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) { | |
221 | spin_lock(&ap->sta_table_lock); | |
222 | ap_sta_hash_del(ap, sta); | |
223 | list_del(&sta->list); | |
224 | spin_unlock(&ap->sta_table_lock); | |
225 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
226 | } else if (sta->timeout_next == STA_DISASSOC) | |
227 | sta->flags &= ~WLAN_STA_ASSOC; | |
228 | ||
229 | if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
230 | hostap_event_expired_sta(local->dev, sta); | |
231 | ||
232 | if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 && | |
233 | !skb_queue_empty(&sta->tx_buf)) { | |
234 | hostap_set_tim(local, sta->aid, 0); | |
235 | sta->flags &= ~WLAN_STA_TIM; | |
236 | } | |
237 | ||
238 | if (sta->ap) { | |
239 | if (ap->autom_ap_wds) { | |
240 | PDEBUG(DEBUG_AP, "%s: removing automatic WDS " | |
241 | "connection to AP " MACSTR "\n", | |
242 | local->dev->name, MAC2STR(sta->addr)); | |
243 | hostap_wds_link_oper(local, sta->addr, WDS_DEL); | |
244 | } | |
245 | } else if (sta->timeout_next == STA_NULLFUNC) { | |
246 | /* send data frame to poll STA and check whether this frame | |
247 | * is ACKed */ | |
4339d328 | 248 | /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but |
ff1d2767 JM |
249 | * it is apparently not retried so TX Exc events are not |
250 | * received for it */ | |
251 | sta->flags |= WLAN_STA_PENDING_POLL; | |
4339d328 JM |
252 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA | |
253 | IEEE80211_STYPE_DATA, NULL, 0, | |
ff1d2767 JM |
254 | sta->addr, ap->tx_callback_poll); |
255 | } else { | |
256 | int deauth = sta->timeout_next == STA_DEAUTH; | |
257 | u16 resp; | |
258 | PDEBUG(DEBUG_AP, "%s: sending %s info to STA " MACSTR | |
259 | "(last=%lu, jiffies=%lu)\n", | |
260 | local->dev->name, | |
261 | deauth ? "deauthentication" : "disassociation", | |
262 | MAC2STR(sta->addr), sta->last_rx, jiffies); | |
263 | ||
264 | resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID : | |
265 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
4339d328 JM |
266 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT | |
267 | (deauth ? IEEE80211_STYPE_DEAUTH : | |
268 | IEEE80211_STYPE_DISASSOC), | |
ff1d2767 JM |
269 | (char *) &resp, 2, sta->addr, 0); |
270 | } | |
271 | ||
272 | if (sta->timeout_next == STA_DEAUTH) { | |
273 | if (sta->flags & WLAN_STA_PERM) { | |
274 | PDEBUG(DEBUG_AP, "%s: STA " MACSTR " would have been " | |
275 | "removed, but it has 'perm' flag\n", | |
276 | local->dev->name, MAC2STR(sta->addr)); | |
277 | } else | |
278 | ap_free_sta(ap, sta); | |
279 | return; | |
280 | } | |
281 | ||
282 | if (sta->timeout_next == STA_NULLFUNC) { | |
283 | sta->timeout_next = STA_DISASSOC; | |
284 | sta->timer.expires = jiffies + AP_DISASSOC_DELAY; | |
285 | } else { | |
286 | sta->timeout_next = STA_DEAUTH; | |
287 | sta->timer.expires = jiffies + AP_DEAUTH_DELAY; | |
288 | } | |
289 | ||
290 | add_timer(&sta->timer); | |
291 | } | |
292 | ||
293 | ||
294 | void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap, | |
295 | int resend) | |
296 | { | |
297 | u8 addr[ETH_ALEN]; | |
298 | u16 resp; | |
299 | int i; | |
300 | ||
301 | PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name); | |
302 | memset(addr, 0xff, ETH_ALEN); | |
303 | ||
304 | resp = __constant_cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); | |
305 | ||
306 | /* deauth message sent; try to resend it few times; the message is | |
307 | * broadcast, so it may be delayed until next DTIM; there is not much | |
308 | * else we can do at this point since the driver is going to be shut | |
309 | * down */ | |
310 | for (i = 0; i < 5; i++) { | |
4339d328 JM |
311 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
312 | IEEE80211_STYPE_DEAUTH, | |
ff1d2767 JM |
313 | (char *) &resp, 2, addr, 0); |
314 | ||
315 | if (!resend || ap->num_sta <= 0) | |
316 | return; | |
317 | ||
318 | mdelay(50); | |
319 | } | |
320 | } | |
321 | ||
322 | ||
323 | static int ap_control_proc_read(char *page, char **start, off_t off, | |
324 | int count, int *eof, void *data) | |
325 | { | |
326 | char *p = page; | |
327 | struct ap_data *ap = (struct ap_data *) data; | |
328 | char *policy_txt; | |
329 | struct list_head *ptr; | |
330 | struct mac_entry *entry; | |
331 | ||
332 | if (off != 0) { | |
333 | *eof = 1; | |
334 | return 0; | |
335 | } | |
336 | ||
337 | switch (ap->mac_restrictions.policy) { | |
338 | case MAC_POLICY_OPEN: | |
339 | policy_txt = "open"; | |
340 | break; | |
341 | case MAC_POLICY_ALLOW: | |
342 | policy_txt = "allow"; | |
343 | break; | |
344 | case MAC_POLICY_DENY: | |
345 | policy_txt = "deny"; | |
346 | break; | |
347 | default: | |
348 | policy_txt = "unknown"; | |
349 | break; | |
350 | }; | |
351 | p += sprintf(p, "MAC policy: %s\n", policy_txt); | |
352 | p += sprintf(p, "MAC entries: %u\n", ap->mac_restrictions.entries); | |
353 | p += sprintf(p, "MAC list:\n"); | |
354 | spin_lock_bh(&ap->mac_restrictions.lock); | |
355 | for (ptr = ap->mac_restrictions.mac_list.next; | |
356 | ptr != &ap->mac_restrictions.mac_list; ptr = ptr->next) { | |
357 | if (p - page > PAGE_SIZE - 80) { | |
358 | p += sprintf(p, "All entries did not fit one page.\n"); | |
359 | break; | |
360 | } | |
361 | ||
362 | entry = list_entry(ptr, struct mac_entry, list); | |
363 | p += sprintf(p, MACSTR "\n", MAC2STR(entry->addr)); | |
364 | } | |
365 | spin_unlock_bh(&ap->mac_restrictions.lock); | |
366 | ||
367 | return (p - page); | |
368 | } | |
369 | ||
370 | ||
5fad5a2e | 371 | int ap_control_add_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
ff1d2767 JM |
372 | { |
373 | struct mac_entry *entry; | |
374 | ||
375 | entry = kmalloc(sizeof(struct mac_entry), GFP_KERNEL); | |
376 | if (entry == NULL) | |
377 | return -1; | |
378 | ||
379 | memcpy(entry->addr, mac, ETH_ALEN); | |
380 | ||
381 | spin_lock_bh(&mac_restrictions->lock); | |
382 | list_add_tail(&entry->list, &mac_restrictions->mac_list); | |
383 | mac_restrictions->entries++; | |
384 | spin_unlock_bh(&mac_restrictions->lock); | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | ||
5fad5a2e | 390 | int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
ff1d2767 JM |
391 | { |
392 | struct list_head *ptr; | |
393 | struct mac_entry *entry; | |
394 | ||
395 | spin_lock_bh(&mac_restrictions->lock); | |
396 | for (ptr = mac_restrictions->mac_list.next; | |
397 | ptr != &mac_restrictions->mac_list; ptr = ptr->next) { | |
398 | entry = list_entry(ptr, struct mac_entry, list); | |
399 | ||
400 | if (memcmp(entry->addr, mac, ETH_ALEN) == 0) { | |
401 | list_del(ptr); | |
402 | kfree(entry); | |
403 | mac_restrictions->entries--; | |
404 | spin_unlock_bh(&mac_restrictions->lock); | |
405 | return 0; | |
406 | } | |
407 | } | |
408 | spin_unlock_bh(&mac_restrictions->lock); | |
409 | return -1; | |
410 | } | |
411 | ||
412 | ||
413 | static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions, | |
414 | u8 *mac) | |
415 | { | |
416 | struct list_head *ptr; | |
417 | struct mac_entry *entry; | |
418 | int found = 0; | |
419 | ||
420 | if (mac_restrictions->policy == MAC_POLICY_OPEN) | |
421 | return 0; | |
422 | ||
423 | spin_lock_bh(&mac_restrictions->lock); | |
424 | for (ptr = mac_restrictions->mac_list.next; | |
425 | ptr != &mac_restrictions->mac_list; ptr = ptr->next) { | |
426 | entry = list_entry(ptr, struct mac_entry, list); | |
427 | ||
428 | if (memcmp(entry->addr, mac, ETH_ALEN) == 0) { | |
429 | found = 1; | |
430 | break; | |
431 | } | |
432 | } | |
433 | spin_unlock_bh(&mac_restrictions->lock); | |
434 | ||
435 | if (mac_restrictions->policy == MAC_POLICY_ALLOW) | |
436 | return !found; | |
437 | else | |
438 | return found; | |
439 | } | |
440 | ||
441 | ||
5fad5a2e | 442 | void ap_control_flush_macs(struct mac_restrictions *mac_restrictions) |
ff1d2767 JM |
443 | { |
444 | struct list_head *ptr, *n; | |
445 | struct mac_entry *entry; | |
446 | ||
447 | if (mac_restrictions->entries == 0) | |
448 | return; | |
449 | ||
450 | spin_lock_bh(&mac_restrictions->lock); | |
451 | for (ptr = mac_restrictions->mac_list.next, n = ptr->next; | |
452 | ptr != &mac_restrictions->mac_list; | |
453 | ptr = n, n = ptr->next) { | |
454 | entry = list_entry(ptr, struct mac_entry, list); | |
455 | list_del(ptr); | |
456 | kfree(entry); | |
457 | } | |
458 | mac_restrictions->entries = 0; | |
459 | spin_unlock_bh(&mac_restrictions->lock); | |
460 | } | |
461 | ||
462 | ||
5fad5a2e | 463 | int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac) |
ff1d2767 JM |
464 | { |
465 | struct sta_info *sta; | |
466 | u16 resp; | |
467 | ||
468 | spin_lock_bh(&ap->sta_table_lock); | |
469 | sta = ap_get_sta(ap, mac); | |
470 | if (sta) { | |
471 | ap_sta_hash_del(ap, sta); | |
472 | list_del(&sta->list); | |
473 | } | |
474 | spin_unlock_bh(&ap->sta_table_lock); | |
475 | ||
476 | if (!sta) | |
477 | return -EINVAL; | |
478 | ||
479 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); | |
4339d328 | 480 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH, |
ff1d2767 JM |
481 | (char *) &resp, 2, sta->addr, 0); |
482 | ||
483 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
484 | hostap_event_expired_sta(dev, sta); | |
485 | ||
486 | ap_free_sta(ap, sta); | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
491 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
492 | ||
493 | ||
5fad5a2e | 494 | void ap_control_kickall(struct ap_data *ap) |
ff1d2767 JM |
495 | { |
496 | struct list_head *ptr, *n; | |
497 | struct sta_info *sta; | |
74fae82c | 498 | |
ff1d2767 JM |
499 | spin_lock_bh(&ap->sta_table_lock); |
500 | for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list; | |
501 | ptr = n, n = ptr->next) { | |
502 | sta = list_entry(ptr, struct sta_info, list); | |
503 | ap_sta_hash_del(ap, sta); | |
504 | list_del(&sta->list); | |
505 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
506 | hostap_event_expired_sta(sta->local->dev, sta); | |
507 | ap_free_sta(ap, sta); | |
508 | } | |
509 | spin_unlock_bh(&ap->sta_table_lock); | |
510 | } | |
511 | ||
512 | ||
513 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
514 | ||
515 | #define PROC_LIMIT (PAGE_SIZE - 80) | |
516 | ||
517 | static int prism2_ap_proc_read(char *page, char **start, off_t off, | |
518 | int count, int *eof, void *data) | |
519 | { | |
520 | char *p = page; | |
521 | struct ap_data *ap = (struct ap_data *) data; | |
522 | struct list_head *ptr; | |
523 | int i; | |
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); | |
532 | for (ptr = ap->sta_list.next; ptr != &ap->sta_list; ptr = ptr->next) { | |
533 | struct sta_info *sta = (struct sta_info *) ptr; | |
534 | ||
535 | if (!sta->ap) | |
536 | continue; | |
537 | ||
538 | p += sprintf(p, MACSTR " %d %d %d %d '", MAC2STR(sta->addr), | |
539 | sta->u.ap.channel, sta->last_rx_signal, | |
540 | sta->last_rx_silence, sta->last_rx_rate); | |
541 | for (i = 0; i < sta->u.ap.ssid_len; i++) | |
542 | p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 && | |
543 | sta->u.ap.ssid[i] < 127) ? | |
544 | "%c" : "<%02x>"), | |
545 | sta->u.ap.ssid[i]); | |
546 | p += sprintf(p, "'"); | |
547 | if (sta->capability & WLAN_CAPABILITY_ESS) | |
548 | p += sprintf(p, " [ESS]"); | |
549 | if (sta->capability & WLAN_CAPABILITY_IBSS) | |
550 | p += sprintf(p, " [IBSS]"); | |
551 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
552 | p += sprintf(p, " [WEP]"); | |
553 | p += sprintf(p, "\n"); | |
554 | ||
555 | if ((p - page) > PROC_LIMIT) { | |
556 | printk(KERN_DEBUG "hostap: ap proc did not fit\n"); | |
557 | break; | |
558 | } | |
559 | } | |
560 | spin_unlock_bh(&ap->sta_table_lock); | |
561 | ||
562 | if ((p - page) <= off) { | |
563 | *eof = 1; | |
564 | return 0; | |
565 | } | |
566 | ||
567 | *start = page + off; | |
568 | ||
569 | return (p - page - off); | |
570 | } | |
571 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
572 | ||
573 | ||
574 | void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver) | |
575 | { | |
576 | if (!ap) | |
577 | return; | |
578 | ||
579 | if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) { | |
580 | PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - " | |
581 | "firmware upgrade recommended\n"); | |
582 | ap->nullfunc_ack = 1; | |
583 | } else | |
584 | ap->nullfunc_ack = 0; | |
585 | ||
586 | if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) { | |
587 | printk(KERN_WARNING "%s: Warning: secondary station firmware " | |
588 | "version 1.4.2 does not seem to work in Host AP mode\n", | |
589 | ap->local->dev->name); | |
590 | } | |
591 | } | |
592 | ||
593 | ||
594 | /* Called only as a tasklet (software IRQ) */ | |
595 | static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data) | |
596 | { | |
597 | struct ap_data *ap = data; | |
598 | u16 fc; | |
d041674d | 599 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
600 | |
601 | if (!ap->local->hostapd || !ap->local->apdev) { | |
602 | dev_kfree_skb(skb); | |
603 | return; | |
604 | } | |
605 | ||
d041674d | 606 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 607 | fc = le16_to_cpu(hdr->frame_ctl); |
ff1d2767 JM |
608 | |
609 | /* Pass the TX callback frame to the hostapd; use 802.11 header version | |
610 | * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */ | |
611 | ||
b2f4a2e3 | 612 | fc &= ~IEEE80211_FCTL_VERS; |
ff1d2767 | 613 | fc |= ok ? BIT(1) : BIT(0); |
c0f72ca8 | 614 | hdr->frame_ctl = cpu_to_le16(fc); |
ff1d2767 JM |
615 | |
616 | skb->dev = ap->local->apdev; | |
617 | skb_pull(skb, hostap_80211_get_hdrlen(fc)); | |
618 | skb->pkt_type = PACKET_OTHERHOST; | |
619 | skb->protocol = __constant_htons(ETH_P_802_2); | |
620 | memset(skb->cb, 0, sizeof(skb->cb)); | |
621 | netif_rx(skb); | |
622 | } | |
623 | ||
624 | ||
625 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
626 | /* Called only as a tasklet (software IRQ) */ | |
627 | static void hostap_ap_tx_cb_auth(struct sk_buff *skb, int ok, void *data) | |
628 | { | |
629 | struct ap_data *ap = data; | |
630 | struct net_device *dev = ap->local->dev; | |
d041674d | 631 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
632 | u16 fc, *pos, auth_alg, auth_transaction, status; |
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 | ||
652 | pos = (u16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); | |
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) { | |
686 | PDEBUG(DEBUG_AP, "%s: " MACSTR " auth_cb - alg=%d trans#=%d " | |
687 | "status=%d - %s\n", | |
688 | dev->name, MAC2STR(hdr->addr1), auth_alg, | |
689 | auth_transaction, status, txt); | |
690 | } | |
691 | dev_kfree_skb(skb); | |
692 | } | |
693 | ||
694 | ||
695 | /* Called only as a tasklet (software IRQ) */ | |
696 | static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data) | |
697 | { | |
698 | struct ap_data *ap = data; | |
699 | struct net_device *dev = ap->local->dev; | |
d041674d | 700 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
701 | u16 fc, *pos, status; |
702 | struct sta_info *sta = NULL; | |
703 | char *txt = NULL; | |
704 | ||
705 | if (ap->local->hostapd) { | |
706 | dev_kfree_skb(skb); | |
707 | return; | |
708 | } | |
709 | ||
d041674d | 710 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 711 | fc = le16_to_cpu(hdr->frame_ctl); |
4339d328 JM |
712 | if (WLAN_FC_GET_TYPE(fc) != IEEE80211_FTYPE_MGMT || |
713 | (WLAN_FC_GET_STYPE(fc) != IEEE80211_STYPE_ASSOC_RESP && | |
714 | WLAN_FC_GET_STYPE(fc) != IEEE80211_STYPE_REASSOC_RESP) || | |
ff1d2767 JM |
715 | skb->len < IEEE80211_MGMT_HDR_LEN + 4) { |
716 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid " | |
717 | "frame\n", dev->name); | |
718 | dev_kfree_skb(skb); | |
719 | return; | |
720 | } | |
721 | ||
722 | if (!ok) { | |
723 | txt = "frame was not ACKed"; | |
724 | goto done; | |
725 | } | |
726 | ||
727 | spin_lock(&ap->sta_table_lock); | |
728 | sta = ap_get_sta(ap, hdr->addr1); | |
729 | if (sta) | |
730 | atomic_inc(&sta->users); | |
731 | spin_unlock(&ap->sta_table_lock); | |
732 | ||
733 | if (!sta) { | |
734 | txt = "STA not found"; | |
735 | goto done; | |
736 | } | |
737 | ||
738 | pos = (u16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); | |
739 | pos++; | |
740 | status = le16_to_cpu(*pos++); | |
741 | if (status == WLAN_STATUS_SUCCESS) { | |
742 | if (!(sta->flags & WLAN_STA_ASSOC)) | |
743 | hostap_event_new_sta(dev, sta); | |
744 | txt = "STA associated"; | |
745 | sta->flags |= WLAN_STA_ASSOC; | |
746 | sta->last_assoc = jiffies; | |
747 | } else | |
748 | txt = "association failed"; | |
749 | ||
750 | done: | |
751 | if (sta) | |
752 | atomic_dec(&sta->users); | |
753 | if (txt) { | |
754 | PDEBUG(DEBUG_AP, "%s: " MACSTR " assoc_cb - %s\n", | |
755 | dev->name, MAC2STR(hdr->addr1), txt); | |
756 | } | |
757 | dev_kfree_skb(skb); | |
758 | } | |
759 | ||
760 | /* Called only as a tasklet (software IRQ); TX callback for poll frames used | |
761 | * in verifying whether the STA is still present. */ | |
762 | static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data) | |
763 | { | |
764 | struct ap_data *ap = data; | |
d041674d | 765 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
766 | struct sta_info *sta; |
767 | ||
768 | if (skb->len < 24) | |
769 | goto fail; | |
d041674d | 770 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
771 | if (ok) { |
772 | spin_lock(&ap->sta_table_lock); | |
773 | sta = ap_get_sta(ap, hdr->addr1); | |
774 | if (sta) | |
775 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
776 | spin_unlock(&ap->sta_table_lock); | |
777 | } else { | |
778 | PDEBUG(DEBUG_AP, "%s: STA " MACSTR " did not ACK activity " | |
779 | "poll frame\n", ap->local->dev->name, | |
780 | MAC2STR(hdr->addr1)); | |
781 | } | |
782 | ||
783 | fail: | |
784 | dev_kfree_skb(skb); | |
785 | } | |
786 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
787 | ||
788 | ||
789 | void hostap_init_data(local_info_t *local) | |
790 | { | |
791 | struct ap_data *ap = local->ap; | |
792 | ||
793 | if (ap == NULL) { | |
794 | printk(KERN_WARNING "hostap_init_data: ap == NULL\n"); | |
795 | return; | |
796 | } | |
797 | memset(ap, 0, sizeof(struct ap_data)); | |
798 | ap->local = local; | |
799 | ||
800 | ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx); | |
801 | ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx); | |
802 | ap->max_inactivity = | |
803 | GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ; | |
804 | ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx); | |
805 | ||
806 | spin_lock_init(&ap->sta_table_lock); | |
807 | INIT_LIST_HEAD(&ap->sta_list); | |
808 | ||
809 | /* Initialize task queue structure for AP management */ | |
c4028958 | 810 | INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue); |
ff1d2767 JM |
811 | |
812 | ap->tx_callback_idx = | |
813 | hostap_tx_callback_register(local, hostap_ap_tx_cb, ap); | |
814 | if (ap->tx_callback_idx == 0) | |
815 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
816 | "AP\n", local->dev->name); | |
817 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 818 | INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue); |
ff1d2767 JM |
819 | |
820 | ap->tx_callback_auth = | |
821 | hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap); | |
822 | ap->tx_callback_assoc = | |
823 | hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap); | |
824 | ap->tx_callback_poll = | |
825 | hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap); | |
826 | if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 || | |
827 | ap->tx_callback_poll == 0) | |
828 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
829 | "AP\n", local->dev->name); | |
830 | ||
831 | spin_lock_init(&ap->mac_restrictions.lock); | |
832 | INIT_LIST_HEAD(&ap->mac_restrictions.mac_list); | |
833 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
834 | ||
835 | ap->initialized = 1; | |
836 | } | |
837 | ||
838 | ||
839 | void hostap_init_ap_proc(local_info_t *local) | |
840 | { | |
841 | struct ap_data *ap = local->ap; | |
842 | ||
843 | ap->proc = local->proc; | |
844 | if (ap->proc == NULL) | |
845 | return; | |
846 | ||
847 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
848 | create_proc_read_entry("ap_debug", 0, ap->proc, | |
849 | ap_debug_proc_read, ap); | |
850 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
851 | ||
852 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
853 | create_proc_read_entry("ap_control", 0, ap->proc, | |
854 | ap_control_proc_read, ap); | |
855 | create_proc_read_entry("ap", 0, ap->proc, | |
856 | prism2_ap_proc_read, ap); | |
857 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
858 | ||
859 | } | |
860 | ||
861 | ||
862 | void hostap_free_data(struct ap_data *ap) | |
863 | { | |
864 | struct list_head *n, *ptr; | |
865 | ||
866 | if (ap == NULL || !ap->initialized) { | |
867 | printk(KERN_DEBUG "hostap_free_data: ap has not yet been " | |
868 | "initialized - skip resource freeing\n"); | |
869 | return; | |
870 | } | |
871 | ||
872 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
873 | if (ap->crypt) | |
874 | ap->crypt->deinit(ap->crypt_priv); | |
875 | ap->crypt = ap->crypt_priv = NULL; | |
876 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
877 | ||
878 | list_for_each_safe(ptr, n, &ap->sta_list) { | |
879 | struct sta_info *sta = list_entry(ptr, struct sta_info, list); | |
880 | ap_sta_hash_del(ap, sta); | |
881 | list_del(&sta->list); | |
882 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
883 | hostap_event_expired_sta(sta->local->dev, sta); | |
884 | ap_free_sta(ap, sta); | |
885 | } | |
886 | ||
887 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
888 | if (ap->proc != NULL) { | |
889 | remove_proc_entry("ap_debug", ap->proc); | |
890 | } | |
891 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
892 | ||
893 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
894 | if (ap->proc != NULL) { | |
895 | remove_proc_entry("ap", ap->proc); | |
896 | remove_proc_entry("ap_control", ap->proc); | |
897 | } | |
898 | ap_control_flush_macs(&ap->mac_restrictions); | |
899 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
900 | ||
901 | ap->initialized = 0; | |
902 | } | |
903 | ||
904 | ||
905 | /* caller should have mutex for AP STA list handling */ | |
906 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta) | |
907 | { | |
908 | struct sta_info *s; | |
909 | ||
910 | s = ap->sta_hash[STA_HASH(sta)]; | |
911 | while (s != NULL && memcmp(s->addr, sta, ETH_ALEN) != 0) | |
912 | s = s->hnext; | |
913 | return s; | |
914 | } | |
915 | ||
916 | ||
917 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
918 | ||
919 | /* Called from timer handler and from scheduled AP queue handlers */ | |
920 | static void prism2_send_mgmt(struct net_device *dev, | |
4339d328 | 921 | u16 type_subtype, char *body, |
ff1d2767 JM |
922 | int body_len, u8 *addr, u16 tx_cb_idx) |
923 | { | |
924 | struct hostap_interface *iface; | |
925 | local_info_t *local; | |
d041674d | 926 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
927 | u16 fc; |
928 | struct sk_buff *skb; | |
929 | struct hostap_skb_tx_data *meta; | |
930 | int hdrlen; | |
931 | ||
932 | iface = netdev_priv(dev); | |
933 | local = iface->local; | |
934 | dev = local->dev; /* always use master radio device */ | |
935 | iface = netdev_priv(dev); | |
936 | ||
937 | if (!(dev->flags & IFF_UP)) { | |
938 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - " | |
939 | "cannot send frame\n", dev->name); | |
940 | return; | |
941 | } | |
942 | ||
943 | skb = dev_alloc_skb(sizeof(*hdr) + body_len); | |
944 | if (skb == NULL) { | |
945 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate " | |
946 | "skb\n", dev->name); | |
947 | return; | |
948 | } | |
949 | ||
4339d328 | 950 | fc = type_subtype; |
ff1d2767 | 951 | hdrlen = hostap_80211_get_hdrlen(fc); |
d041674d | 952 | hdr = (struct ieee80211_hdr_4addr *) skb_put(skb, hdrlen); |
ff1d2767 JM |
953 | if (body) |
954 | memcpy(skb_put(skb, body_len), body, body_len); | |
955 | ||
956 | memset(hdr, 0, hdrlen); | |
957 | ||
958 | /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11 | |
959 | * tx_control instead of using local->tx_control */ | |
960 | ||
961 | ||
962 | memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */ | |
4339d328 | 963 | if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA) { |
b2f4a2e3 | 964 | fc |= IEEE80211_FCTL_FROMDS; |
ff1d2767 JM |
965 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */ |
966 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */ | |
4339d328 | 967 | } else if (WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_CTL) { |
ff1d2767 JM |
968 | /* control:ACK does not have addr2 or addr3 */ |
969 | memset(hdr->addr2, 0, ETH_ALEN); | |
970 | memset(hdr->addr3, 0, ETH_ALEN); | |
971 | } else { | |
972 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */ | |
973 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */ | |
974 | } | |
975 | ||
c0f72ca8 | 976 | hdr->frame_ctl = cpu_to_le16(fc); |
ff1d2767 JM |
977 | |
978 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
979 | memset(meta, 0, sizeof(*meta)); | |
980 | meta->magic = HOSTAP_SKB_TX_DATA_MAGIC; | |
981 | meta->iface = iface; | |
982 | meta->tx_cb_idx = tx_cb_idx; | |
983 | ||
984 | skb->dev = dev; | |
985 | skb->mac.raw = skb->nh.raw = skb->data; | |
986 | dev_queue_xmit(skb); | |
987 | } | |
988 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
989 | ||
990 | ||
991 | static int prism2_sta_proc_read(char *page, char **start, off_t off, | |
992 | int count, int *eof, void *data) | |
993 | { | |
994 | char *p = page; | |
995 | struct sta_info *sta = (struct sta_info *) data; | |
996 | int i; | |
997 | ||
998 | /* FIX: possible race condition.. the STA data could have just expired, | |
999 | * but proc entry was still here so that the read could have started; | |
1000 | * some locking should be done here.. */ | |
1001 | ||
1002 | if (off != 0) { | |
1003 | *eof = 1; | |
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | p += sprintf(p, "%s=" MACSTR "\nusers=%d\naid=%d\n" | |
1008 | "flags=0x%04x%s%s%s%s%s%s%s\n" | |
1009 | "capability=0x%02x\nlisten_interval=%d\nsupported_rates=", | |
1010 | sta->ap ? "AP" : "STA", | |
1011 | MAC2STR(sta->addr), atomic_read(&sta->users), sta->aid, | |
1012 | sta->flags, | |
1013 | sta->flags & WLAN_STA_AUTH ? " AUTH" : "", | |
1014 | sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "", | |
1015 | sta->flags & WLAN_STA_PS ? " PS" : "", | |
1016 | sta->flags & WLAN_STA_TIM ? " TIM" : "", | |
1017 | sta->flags & WLAN_STA_PERM ? " PERM" : "", | |
1018 | sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "", | |
1019 | sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "", | |
1020 | sta->capability, sta->listen_interval); | |
1021 | /* supported_rates: 500 kbit/s units with msb ignored */ | |
1022 | for (i = 0; i < sizeof(sta->supported_rates); i++) | |
1023 | if (sta->supported_rates[i] != 0) | |
1024 | p += sprintf(p, "%d%sMbps ", | |
1025 | (sta->supported_rates[i] & 0x7f) / 2, | |
1026 | sta->supported_rates[i] & 1 ? ".5" : ""); | |
1027 | p += sprintf(p, "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n" | |
1028 | "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n" | |
1029 | "tx_packets=%lu\n" | |
1030 | "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n" | |
1031 | "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n" | |
1032 | "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n" | |
1033 | "tx[11M]=%d\n" | |
1034 | "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n", | |
1035 | jiffies, sta->last_auth, sta->last_assoc, sta->last_rx, | |
1036 | sta->last_tx, | |
1037 | sta->rx_packets, sta->tx_packets, sta->rx_bytes, | |
1038 | sta->tx_bytes, skb_queue_len(&sta->tx_buf), | |
1039 | sta->last_rx_silence, | |
1040 | sta->last_rx_signal, sta->last_rx_rate / 10, | |
1041 | sta->last_rx_rate % 10 ? ".5" : "", | |
1042 | sta->tx_rate, sta->tx_count[0], sta->tx_count[1], | |
1043 | sta->tx_count[2], sta->tx_count[3], sta->rx_count[0], | |
1044 | sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]); | |
1045 | if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats) | |
1046 | p = sta->crypt->ops->print_stats(p, sta->crypt->priv); | |
1047 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1048 | if (sta->ap) { | |
1049 | if (sta->u.ap.channel >= 0) | |
1050 | p += sprintf(p, "channel=%d\n", sta->u.ap.channel); | |
1051 | p += sprintf(p, "ssid="); | |
1052 | for (i = 0; i < sta->u.ap.ssid_len; i++) | |
1053 | p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 && | |
1054 | sta->u.ap.ssid[i] < 127) ? | |
1055 | "%c" : "<%02x>"), | |
1056 | sta->u.ap.ssid[i]); | |
1057 | p += sprintf(p, "\n"); | |
1058 | } | |
1059 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1060 | ||
1061 | return (p - page); | |
1062 | } | |
1063 | ||
1064 | ||
c4028958 | 1065 | static void handle_add_proc_queue(struct work_struct *work) |
ff1d2767 | 1066 | { |
c4028958 DH |
1067 | struct ap_data *ap = container_of(work, struct ap_data, |
1068 | add_sta_proc_queue); | |
ff1d2767 JM |
1069 | struct sta_info *sta; |
1070 | char name[20]; | |
1071 | struct add_sta_proc_data *entry, *prev; | |
1072 | ||
1073 | entry = ap->add_sta_proc_entries; | |
1074 | ap->add_sta_proc_entries = NULL; | |
1075 | ||
1076 | while (entry) { | |
1077 | spin_lock_bh(&ap->sta_table_lock); | |
1078 | sta = ap_get_sta(ap, entry->addr); | |
1079 | if (sta) | |
1080 | atomic_inc(&sta->users); | |
1081 | spin_unlock_bh(&ap->sta_table_lock); | |
1082 | ||
1083 | if (sta) { | |
1084 | sprintf(name, MACSTR, MAC2STR(sta->addr)); | |
1085 | sta->proc = create_proc_read_entry( | |
1086 | name, 0, ap->proc, | |
1087 | prism2_sta_proc_read, sta); | |
1088 | ||
1089 | atomic_dec(&sta->users); | |
1090 | } | |
1091 | ||
1092 | prev = entry; | |
1093 | entry = entry->next; | |
1094 | kfree(prev); | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | ||
1099 | static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr) | |
1100 | { | |
1101 | struct sta_info *sta; | |
1102 | ||
b0471bb7 | 1103 | sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC); |
ff1d2767 JM |
1104 | if (sta == NULL) { |
1105 | PDEBUG(DEBUG_AP, "AP: kmalloc failed\n"); | |
1106 | return NULL; | |
1107 | } | |
1108 | ||
1109 | /* initialize STA info data */ | |
ff1d2767 JM |
1110 | sta->local = ap->local; |
1111 | skb_queue_head_init(&sta->tx_buf); | |
1112 | memcpy(sta->addr, addr, ETH_ALEN); | |
1113 | ||
1114 | atomic_inc(&sta->users); | |
1115 | spin_lock_bh(&ap->sta_table_lock); | |
1116 | list_add(&sta->list, &ap->sta_list); | |
1117 | ap->num_sta++; | |
1118 | ap_sta_hash_add(ap, sta); | |
1119 | spin_unlock_bh(&ap->sta_table_lock); | |
1120 | ||
1121 | if (ap->proc) { | |
1122 | struct add_sta_proc_data *entry; | |
1123 | /* schedule a non-interrupt context process to add a procfs | |
1124 | * entry for the STA since procfs code use GFP_KERNEL */ | |
1125 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
1126 | if (entry) { | |
1127 | memcpy(entry->addr, sta->addr, ETH_ALEN); | |
1128 | entry->next = ap->add_sta_proc_entries; | |
1129 | ap->add_sta_proc_entries = entry; | |
1130 | schedule_work(&ap->add_sta_proc_queue); | |
1131 | } else | |
1132 | printk(KERN_DEBUG "Failed to add STA proc data\n"); | |
1133 | } | |
1134 | ||
1135 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1136 | init_timer(&sta->timer); | |
1137 | sta->timer.expires = jiffies + ap->max_inactivity; | |
1138 | sta->timer.data = (unsigned long) sta; | |
1139 | sta->timer.function = ap_handle_timer; | |
1140 | if (!ap->local->hostapd) | |
1141 | add_timer(&sta->timer); | |
1142 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1143 | ||
1144 | return sta; | |
1145 | } | |
1146 | ||
1147 | ||
1148 | static int ap_tx_rate_ok(int rateidx, struct sta_info *sta, | |
1149 | local_info_t *local) | |
1150 | { | |
1151 | if (rateidx > sta->tx_max_rate || | |
1152 | !(sta->tx_supp_rates & (1 << rateidx))) | |
1153 | return 0; | |
1154 | ||
1155 | if (local->tx_rate_control != 0 && | |
1156 | !(local->tx_rate_control & (1 << rateidx))) | |
1157 | return 0; | |
1158 | ||
1159 | return 1; | |
1160 | } | |
1161 | ||
1162 | ||
1163 | static void prism2_check_tx_rates(struct sta_info *sta) | |
1164 | { | |
1165 | int i; | |
1166 | ||
1167 | sta->tx_supp_rates = 0; | |
1168 | for (i = 0; i < sizeof(sta->supported_rates); i++) { | |
1169 | if ((sta->supported_rates[i] & 0x7f) == 2) | |
1170 | sta->tx_supp_rates |= WLAN_RATE_1M; | |
1171 | if ((sta->supported_rates[i] & 0x7f) == 4) | |
1172 | sta->tx_supp_rates |= WLAN_RATE_2M; | |
1173 | if ((sta->supported_rates[i] & 0x7f) == 11) | |
1174 | sta->tx_supp_rates |= WLAN_RATE_5M5; | |
1175 | if ((sta->supported_rates[i] & 0x7f) == 22) | |
1176 | sta->tx_supp_rates |= WLAN_RATE_11M; | |
1177 | } | |
1178 | sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0; | |
1179 | if (sta->tx_supp_rates & WLAN_RATE_1M) { | |
1180 | sta->tx_max_rate = 0; | |
1181 | if (ap_tx_rate_ok(0, sta, sta->local)) { | |
1182 | sta->tx_rate = 10; | |
1183 | sta->tx_rate_idx = 0; | |
1184 | } | |
1185 | } | |
1186 | if (sta->tx_supp_rates & WLAN_RATE_2M) { | |
1187 | sta->tx_max_rate = 1; | |
1188 | if (ap_tx_rate_ok(1, sta, sta->local)) { | |
1189 | sta->tx_rate = 20; | |
1190 | sta->tx_rate_idx = 1; | |
1191 | } | |
1192 | } | |
1193 | if (sta->tx_supp_rates & WLAN_RATE_5M5) { | |
1194 | sta->tx_max_rate = 2; | |
1195 | if (ap_tx_rate_ok(2, sta, sta->local)) { | |
1196 | sta->tx_rate = 55; | |
1197 | sta->tx_rate_idx = 2; | |
1198 | } | |
1199 | } | |
1200 | if (sta->tx_supp_rates & WLAN_RATE_11M) { | |
1201 | sta->tx_max_rate = 3; | |
1202 | if (ap_tx_rate_ok(3, sta, sta->local)) { | |
1203 | sta->tx_rate = 110; | |
1204 | sta->tx_rate_idx = 3; | |
1205 | } | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | ||
1210 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1211 | ||
1212 | static void ap_crypt_init(struct ap_data *ap) | |
1213 | { | |
62fe7e37 | 1214 | ap->crypt = ieee80211_get_crypto_ops("WEP"); |
ff1d2767 JM |
1215 | |
1216 | if (ap->crypt) { | |
1217 | if (ap->crypt->init) { | |
1218 | ap->crypt_priv = ap->crypt->init(0); | |
1219 | if (ap->crypt_priv == NULL) | |
1220 | ap->crypt = NULL; | |
1221 | else { | |
1222 | u8 key[WEP_KEY_LEN]; | |
1223 | get_random_bytes(key, WEP_KEY_LEN); | |
1224 | ap->crypt->set_key(key, WEP_KEY_LEN, NULL, | |
1225 | ap->crypt_priv); | |
1226 | } | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | if (ap->crypt == NULL) { | |
1231 | printk(KERN_WARNING "AP could not initialize WEP: load module " | |
62fe7e37 | 1232 | "ieee80211_crypt_wep.ko\n"); |
ff1d2767 JM |
1233 | } |
1234 | } | |
1235 | ||
1236 | ||
1237 | /* Generate challenge data for shared key authentication. IEEE 802.11 specifies | |
1238 | * that WEP algorithm is used for generating challange. This should be unique, | |
1239 | * but otherwise there is not really need for randomness etc. Initialize WEP | |
1240 | * with pseudo random key and then use increasing IV to get unique challenge | |
1241 | * streams. | |
1242 | * | |
1243 | * Called only as a scheduled task for pending AP frames. | |
1244 | */ | |
1245 | static char * ap_auth_make_challenge(struct ap_data *ap) | |
1246 | { | |
1247 | char *tmpbuf; | |
1248 | struct sk_buff *skb; | |
1249 | ||
1250 | if (ap->crypt == NULL) { | |
1251 | ap_crypt_init(ap); | |
1252 | if (ap->crypt == NULL) | |
1253 | return NULL; | |
1254 | } | |
1255 | ||
5cbded58 | 1256 | tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC); |
ff1d2767 JM |
1257 | if (tmpbuf == NULL) { |
1258 | PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n"); | |
1259 | return NULL; | |
1260 | } | |
1261 | ||
1262 | skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN + | |
5bfc819b JK |
1263 | ap->crypt->extra_mpdu_prefix_len + |
1264 | ap->crypt->extra_mpdu_postfix_len); | |
ff1d2767 JM |
1265 | if (skb == NULL) { |
1266 | kfree(tmpbuf); | |
1267 | return NULL; | |
1268 | } | |
1269 | ||
5bfc819b | 1270 | skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len); |
ff1d2767 JM |
1271 | memset(skb_put(skb, WLAN_AUTH_CHALLENGE_LEN), 0, |
1272 | WLAN_AUTH_CHALLENGE_LEN); | |
1273 | if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) { | |
1274 | dev_kfree_skb(skb); | |
1275 | kfree(tmpbuf); | |
1276 | return NULL; | |
1277 | } | |
1278 | ||
5bfc819b | 1279 | memcpy(tmpbuf, skb->data + ap->crypt->extra_mpdu_prefix_len, |
ff1d2767 JM |
1280 | WLAN_AUTH_CHALLENGE_LEN); |
1281 | dev_kfree_skb(skb); | |
1282 | ||
1283 | return tmpbuf; | |
1284 | } | |
1285 | ||
1286 | ||
1287 | /* Called only as a scheduled task for pending AP frames. */ | |
1288 | static void handle_authen(local_info_t *local, struct sk_buff *skb, | |
1289 | struct hostap_80211_rx_status *rx_stats) | |
1290 | { | |
1291 | struct net_device *dev = local->dev; | |
d041674d | 1292 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1293 | size_t hdrlen; |
1294 | struct ap_data *ap = local->ap; | |
1295 | char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL; | |
1296 | int len, olen; | |
1297 | u16 auth_alg, auth_transaction, status_code, *pos; | |
1298 | u16 resp = WLAN_STATUS_SUCCESS, fc; | |
1299 | struct sta_info *sta = NULL; | |
62fe7e37 | 1300 | struct ieee80211_crypt_data *crypt; |
ff1d2767 JM |
1301 | char *txt = ""; |
1302 | ||
1303 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1304 | ||
c0f72ca8 | 1305 | fc = le16_to_cpu(hdr->frame_ctl); |
ff1d2767 JM |
1306 | hdrlen = hostap_80211_get_hdrlen(fc); |
1307 | ||
1308 | if (len < 6) { | |
1309 | PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload " | |
1310 | "(len=%d) from " MACSTR "\n", dev->name, len, | |
1311 | MAC2STR(hdr->addr2)); | |
1312 | return; | |
1313 | } | |
1314 | ||
1315 | spin_lock_bh(&local->ap->sta_table_lock); | |
1316 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1317 | if (sta) | |
1318 | atomic_inc(&sta->users); | |
1319 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1320 | ||
1321 | if (sta && sta->crypt) | |
1322 | crypt = sta->crypt; | |
1323 | else { | |
1324 | int idx = 0; | |
1325 | if (skb->len >= hdrlen + 3) | |
1326 | idx = skb->data[hdrlen + 3] >> 6; | |
1327 | crypt = local->crypt[idx]; | |
1328 | } | |
1329 | ||
1330 | pos = (u16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); | |
1331 | auth_alg = __le16_to_cpu(*pos); | |
1332 | pos++; | |
1333 | auth_transaction = __le16_to_cpu(*pos); | |
1334 | pos++; | |
1335 | status_code = __le16_to_cpu(*pos); | |
1336 | pos++; | |
1337 | ||
1338 | if (memcmp(dev->dev_addr, hdr->addr2, ETH_ALEN) == 0 || | |
1339 | ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) { | |
1340 | txt = "authentication denied"; | |
1341 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1342 | goto fail; | |
1343 | } | |
1344 | ||
1345 | if (((local->auth_algs & PRISM2_AUTH_OPEN) && | |
1346 | auth_alg == WLAN_AUTH_OPEN) || | |
1347 | ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) && | |
1348 | crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) { | |
1349 | } else { | |
1350 | txt = "unsupported algorithm"; | |
1351 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
1352 | goto fail; | |
1353 | } | |
1354 | ||
1355 | if (len >= 8) { | |
1356 | u8 *u = (u8 *) pos; | |
1357 | if (*u == WLAN_EID_CHALLENGE) { | |
1358 | if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) { | |
1359 | txt = "invalid challenge len"; | |
1360 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1361 | goto fail; | |
1362 | } | |
1363 | if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) { | |
1364 | txt = "challenge underflow"; | |
1365 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1366 | goto fail; | |
1367 | } | |
1368 | challenge = (char *) (u + 2); | |
1369 | } | |
1370 | } | |
1371 | ||
1372 | if (sta && sta->ap) { | |
1373 | if (time_after(jiffies, sta->u.ap.last_beacon + | |
1374 | (10 * sta->listen_interval * HZ) / 1024)) { | |
1375 | PDEBUG(DEBUG_AP, "%s: no beacons received for a while," | |
1376 | " assuming AP " MACSTR " is now STA\n", | |
1377 | dev->name, MAC2STR(sta->addr)); | |
1378 | sta->ap = 0; | |
1379 | sta->flags = 0; | |
1380 | sta->u.sta.challenge = NULL; | |
1381 | } else { | |
1382 | txt = "AP trying to authenticate?"; | |
1383 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1384 | goto fail; | |
1385 | } | |
1386 | } | |
1387 | ||
1388 | if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) || | |
1389 | (auth_alg == WLAN_AUTH_SHARED_KEY && | |
1390 | (auth_transaction == 1 || | |
1391 | (auth_transaction == 3 && sta != NULL && | |
1392 | sta->u.sta.challenge != NULL)))) { | |
1393 | } else { | |
1394 | txt = "unknown authentication transaction number"; | |
1395 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; | |
1396 | goto fail; | |
1397 | } | |
1398 | ||
1399 | if (sta == NULL) { | |
1400 | txt = "new STA"; | |
1401 | ||
1402 | if (local->ap->num_sta >= MAX_STA_COUNT) { | |
1403 | /* FIX: might try to remove some old STAs first? */ | |
1404 | txt = "no more room for new STAs"; | |
1405 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1406 | goto fail; | |
1407 | } | |
1408 | ||
1409 | sta = ap_add_sta(local->ap, hdr->addr2); | |
1410 | if (sta == NULL) { | |
1411 | txt = "ap_add_sta failed"; | |
1412 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1413 | goto fail; | |
1414 | } | |
1415 | } | |
1416 | ||
1417 | switch (auth_alg) { | |
1418 | case WLAN_AUTH_OPEN: | |
1419 | txt = "authOK"; | |
1420 | /* IEEE 802.11 standard is not completely clear about | |
1421 | * whether STA is considered authenticated after | |
1422 | * authentication OK frame has been send or after it | |
1423 | * has been ACKed. In order to reduce interoperability | |
1424 | * issues, mark the STA authenticated before ACK. */ | |
1425 | sta->flags |= WLAN_STA_AUTH; | |
1426 | break; | |
1427 | ||
1428 | case WLAN_AUTH_SHARED_KEY: | |
1429 | if (auth_transaction == 1) { | |
1430 | if (sta->u.sta.challenge == NULL) { | |
1431 | sta->u.sta.challenge = | |
1432 | ap_auth_make_challenge(local->ap); | |
1433 | if (sta->u.sta.challenge == NULL) { | |
1434 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1435 | goto fail; | |
1436 | } | |
1437 | } | |
1438 | } else { | |
1439 | if (sta->u.sta.challenge == NULL || | |
1440 | challenge == NULL || | |
1441 | memcmp(sta->u.sta.challenge, challenge, | |
1442 | WLAN_AUTH_CHALLENGE_LEN) != 0 || | |
831a179f | 1443 | !(fc & IEEE80211_FCTL_PROTECTED)) { |
ff1d2767 JM |
1444 | txt = "challenge response incorrect"; |
1445 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1446 | goto fail; | |
1447 | } | |
1448 | ||
1449 | txt = "challenge OK - authOK"; | |
1450 | /* IEEE 802.11 standard is not completely clear about | |
1451 | * whether STA is considered authenticated after | |
1452 | * authentication OK frame has been send or after it | |
1453 | * has been ACKed. In order to reduce interoperability | |
1454 | * issues, mark the STA authenticated before ACK. */ | |
1455 | sta->flags |= WLAN_STA_AUTH; | |
1456 | kfree(sta->u.sta.challenge); | |
1457 | sta->u.sta.challenge = NULL; | |
1458 | } | |
1459 | break; | |
1460 | } | |
1461 | ||
1462 | fail: | |
1463 | pos = (u16 *) body; | |
1464 | *pos = cpu_to_le16(auth_alg); | |
1465 | pos++; | |
1466 | *pos = cpu_to_le16(auth_transaction + 1); | |
1467 | pos++; | |
1468 | *pos = cpu_to_le16(resp); /* status_code */ | |
1469 | pos++; | |
1470 | olen = 6; | |
1471 | ||
1472 | if (resp == WLAN_STATUS_SUCCESS && sta != NULL && | |
1473 | sta->u.sta.challenge != NULL && | |
1474 | auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) { | |
1475 | u8 *tmp = (u8 *) pos; | |
1476 | *tmp++ = WLAN_EID_CHALLENGE; | |
1477 | *tmp++ = WLAN_AUTH_CHALLENGE_LEN; | |
1478 | pos++; | |
1479 | memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN); | |
1480 | olen += 2 + WLAN_AUTH_CHALLENGE_LEN; | |
1481 | } | |
1482 | ||
4339d328 | 1483 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH, |
ff1d2767 JM |
1484 | body, olen, hdr->addr2, ap->tx_callback_auth); |
1485 | ||
1486 | if (sta) { | |
1487 | sta->last_rx = jiffies; | |
1488 | atomic_dec(&sta->users); | |
1489 | } | |
1490 | ||
1491 | if (resp) { | |
1492 | PDEBUG(DEBUG_AP, "%s: " MACSTR " auth (alg=%d trans#=%d " | |
1493 | "stat=%d len=%d fc=%04x) ==> %d (%s)\n", | |
1494 | dev->name, MAC2STR(hdr->addr2), auth_alg, | |
1495 | auth_transaction, status_code, len, fc, resp, txt); | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | ||
1500 | /* Called only as a scheduled task for pending AP frames. */ | |
1501 | static void handle_assoc(local_info_t *local, struct sk_buff *skb, | |
1502 | struct hostap_80211_rx_status *rx_stats, int reassoc) | |
1503 | { | |
1504 | struct net_device *dev = local->dev; | |
d041674d | 1505 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1506 | char body[12], *p, *lpos; |
1507 | int len, left; | |
1508 | u16 *pos; | |
1509 | u16 resp = WLAN_STATUS_SUCCESS; | |
1510 | struct sta_info *sta = NULL; | |
1511 | int send_deauth = 0; | |
1512 | char *txt = ""; | |
1513 | u8 prev_ap[ETH_ALEN]; | |
1514 | ||
1515 | left = len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1516 | ||
1517 | if (len < (reassoc ? 10 : 4)) { | |
1518 | PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload " | |
1519 | "(len=%d, reassoc=%d) from " MACSTR "\n", | |
1520 | dev->name, len, reassoc, MAC2STR(hdr->addr2)); | |
1521 | return; | |
1522 | } | |
1523 | ||
1524 | spin_lock_bh(&local->ap->sta_table_lock); | |
1525 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1526 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
1527 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1528 | txt = "trying to associate before authentication"; | |
1529 | send_deauth = 1; | |
1530 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1531 | sta = NULL; /* do not decrement sta->users */ | |
1532 | goto fail; | |
1533 | } | |
1534 | atomic_inc(&sta->users); | |
1535 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1536 | ||
1537 | pos = (u16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); | |
1538 | sta->capability = __le16_to_cpu(*pos); | |
1539 | pos++; left -= 2; | |
1540 | sta->listen_interval = __le16_to_cpu(*pos); | |
1541 | pos++; left -= 2; | |
1542 | ||
1543 | if (reassoc) { | |
1544 | memcpy(prev_ap, pos, ETH_ALEN); | |
1545 | pos++; pos++; pos++; left -= 6; | |
1546 | } else | |
1547 | memset(prev_ap, 0, ETH_ALEN); | |
1548 | ||
1549 | if (left >= 2) { | |
1550 | unsigned int ileft; | |
1551 | unsigned char *u = (unsigned char *) pos; | |
1552 | ||
1553 | if (*u == WLAN_EID_SSID) { | |
1554 | u++; left--; | |
1555 | ileft = *u; | |
1556 | u++; left--; | |
1557 | ||
1558 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
1559 | txt = "SSID overflow"; | |
1560 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1561 | goto fail; | |
1562 | } | |
1563 | ||
1564 | if (ileft != strlen(local->essid) || | |
1565 | memcmp(local->essid, u, ileft) != 0) { | |
1566 | txt = "not our SSID"; | |
1567 | resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC; | |
1568 | goto fail; | |
1569 | } | |
1570 | ||
1571 | u += ileft; | |
1572 | left -= ileft; | |
1573 | } | |
1574 | ||
1575 | if (left >= 2 && *u == WLAN_EID_SUPP_RATES) { | |
1576 | u++; left--; | |
1577 | ileft = *u; | |
1578 | u++; left--; | |
74fae82c | 1579 | |
ff1d2767 JM |
1580 | if (ileft > left || ileft == 0 || |
1581 | ileft > WLAN_SUPP_RATES_MAX) { | |
1582 | txt = "SUPP_RATES len error"; | |
1583 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1584 | goto fail; | |
1585 | } | |
1586 | ||
1587 | memset(sta->supported_rates, 0, | |
1588 | sizeof(sta->supported_rates)); | |
1589 | memcpy(sta->supported_rates, u, ileft); | |
1590 | prism2_check_tx_rates(sta); | |
1591 | ||
1592 | u += ileft; | |
1593 | left -= ileft; | |
1594 | } | |
1595 | ||
1596 | if (left > 0) { | |
1597 | PDEBUG(DEBUG_AP, "%s: assoc from " MACSTR " with extra" | |
1598 | " data (%d bytes) [", | |
1599 | dev->name, MAC2STR(hdr->addr2), left); | |
1600 | while (left > 0) { | |
1601 | PDEBUG2(DEBUG_AP, "<%02x>", *u); | |
1602 | u++; left--; | |
1603 | } | |
1604 | PDEBUG2(DEBUG_AP, "]\n"); | |
1605 | } | |
1606 | } else { | |
1607 | txt = "frame underflow"; | |
1608 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1609 | goto fail; | |
1610 | } | |
1611 | ||
1612 | /* get a unique AID */ | |
1613 | if (sta->aid > 0) | |
1614 | txt = "OK, old AID"; | |
1615 | else { | |
1616 | spin_lock_bh(&local->ap->sta_table_lock); | |
1617 | for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++) | |
1618 | if (local->ap->sta_aid[sta->aid - 1] == NULL) | |
1619 | break; | |
1620 | if (sta->aid > MAX_AID_TABLE_SIZE) { | |
1621 | sta->aid = 0; | |
1622 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1623 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1624 | txt = "no room for more AIDs"; | |
1625 | } else { | |
1626 | local->ap->sta_aid[sta->aid - 1] = sta; | |
1627 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1628 | txt = "OK, new AID"; | |
1629 | } | |
1630 | } | |
1631 | ||
1632 | fail: | |
1633 | pos = (u16 *) body; | |
1634 | ||
1635 | if (send_deauth) { | |
1636 | *pos = __constant_cpu_to_le16( | |
1637 | WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH); | |
1638 | pos++; | |
1639 | } else { | |
1640 | /* FIX: CF-Pollable and CF-PollReq should be set to match the | |
1641 | * values in beacons/probe responses */ | |
1642 | /* FIX: how about privacy and WEP? */ | |
1643 | /* capability */ | |
1644 | *pos = __constant_cpu_to_le16(WLAN_CAPABILITY_ESS); | |
1645 | pos++; | |
1646 | ||
1647 | /* status_code */ | |
1648 | *pos = __cpu_to_le16(resp); | |
1649 | pos++; | |
1650 | ||
1651 | *pos = __cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) | | |
1652 | BIT(14) | BIT(15)); /* AID */ | |
1653 | pos++; | |
1654 | ||
1655 | /* Supported rates (Information element) */ | |
1656 | p = (char *) pos; | |
1657 | *p++ = WLAN_EID_SUPP_RATES; | |
1658 | lpos = p; | |
1659 | *p++ = 0; /* len */ | |
1660 | if (local->tx_rate_control & WLAN_RATE_1M) { | |
1661 | *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02; | |
1662 | (*lpos)++; | |
1663 | } | |
1664 | if (local->tx_rate_control & WLAN_RATE_2M) { | |
1665 | *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04; | |
1666 | (*lpos)++; | |
1667 | } | |
1668 | if (local->tx_rate_control & WLAN_RATE_5M5) { | |
1669 | *p++ = local->basic_rates & WLAN_RATE_5M5 ? | |
1670 | 0x8b : 0x0b; | |
1671 | (*lpos)++; | |
1672 | } | |
1673 | if (local->tx_rate_control & WLAN_RATE_11M) { | |
1674 | *p++ = local->basic_rates & WLAN_RATE_11M ? | |
1675 | 0x96 : 0x16; | |
1676 | (*lpos)++; | |
1677 | } | |
1678 | pos = (u16 *) p; | |
1679 | } | |
1680 | ||
4339d328 JM |
1681 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
1682 | (send_deauth ? IEEE80211_STYPE_DEAUTH : | |
1683 | (reassoc ? IEEE80211_STYPE_REASSOC_RESP : | |
1684 | IEEE80211_STYPE_ASSOC_RESP)), | |
ff1d2767 JM |
1685 | body, (u8 *) pos - (u8 *) body, |
1686 | hdr->addr2, | |
1687 | send_deauth ? 0 : local->ap->tx_callback_assoc); | |
1688 | ||
1689 | if (sta) { | |
1690 | if (resp == WLAN_STATUS_SUCCESS) { | |
1691 | sta->last_rx = jiffies; | |
1692 | /* STA will be marked associated from TX callback, if | |
1693 | * AssocResp is ACKed */ | |
1694 | } | |
1695 | atomic_dec(&sta->users); | |
1696 | } | |
1697 | ||
1698 | #if 0 | |
1699 | PDEBUG(DEBUG_AP, "%s: " MACSTR " %sassoc (len=%d prev_ap=" MACSTR | |
1700 | ") => %d(%d) (%s)\n", | |
1701 | dev->name, MAC2STR(hdr->addr2), reassoc ? "re" : "", len, | |
1702 | MAC2STR(prev_ap), resp, send_deauth, txt); | |
1703 | #endif | |
1704 | } | |
1705 | ||
1706 | ||
1707 | /* Called only as a scheduled task for pending AP frames. */ | |
1708 | static void handle_deauth(local_info_t *local, struct sk_buff *skb, | |
1709 | struct hostap_80211_rx_status *rx_stats) | |
1710 | { | |
1711 | struct net_device *dev = local->dev; | |
d041674d | 1712 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1713 | char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
1714 | int len; | |
1715 | u16 reason_code, *pos; | |
1716 | struct sta_info *sta = NULL; | |
1717 | ||
1718 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1719 | ||
1720 | if (len < 2) { | |
1721 | printk("handle_deauth - too short payload (len=%d)\n", len); | |
1722 | return; | |
1723 | } | |
1724 | ||
1725 | pos = (u16 *) body; | |
1726 | reason_code = __le16_to_cpu(*pos); | |
1727 | ||
1728 | PDEBUG(DEBUG_AP, "%s: deauthentication: " MACSTR " len=%d, " | |
1729 | "reason_code=%d\n", dev->name, MAC2STR(hdr->addr2), len, | |
1730 | reason_code); | |
1731 | ||
1732 | spin_lock_bh(&local->ap->sta_table_lock); | |
1733 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1734 | if (sta != NULL) { | |
1735 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1736 | hostap_event_expired_sta(local->dev, sta); | |
1737 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
1738 | } | |
1739 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1740 | if (sta == NULL) { | |
1741 | printk("%s: deauthentication from " MACSTR ", " | |
1742 | "reason_code=%d, but STA not authenticated\n", dev->name, | |
1743 | MAC2STR(hdr->addr2), reason_code); | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | ||
1748 | /* Called only as a scheduled task for pending AP frames. */ | |
1749 | static void handle_disassoc(local_info_t *local, struct sk_buff *skb, | |
1750 | struct hostap_80211_rx_status *rx_stats) | |
1751 | { | |
1752 | struct net_device *dev = local->dev; | |
d041674d | 1753 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1754 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1755 | int len; | |
1756 | u16 reason_code, *pos; | |
1757 | struct sta_info *sta = NULL; | |
1758 | ||
1759 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1760 | ||
1761 | if (len < 2) { | |
1762 | printk("handle_disassoc - too short payload (len=%d)\n", len); | |
1763 | return; | |
1764 | } | |
1765 | ||
1766 | pos = (u16 *) body; | |
1767 | reason_code = __le16_to_cpu(*pos); | |
1768 | ||
1769 | PDEBUG(DEBUG_AP, "%s: disassociation: " MACSTR " len=%d, " | |
1770 | "reason_code=%d\n", dev->name, MAC2STR(hdr->addr2), len, | |
1771 | reason_code); | |
1772 | ||
1773 | spin_lock_bh(&local->ap->sta_table_lock); | |
1774 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1775 | if (sta != NULL) { | |
1776 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1777 | hostap_event_expired_sta(local->dev, sta); | |
1778 | sta->flags &= ~WLAN_STA_ASSOC; | |
1779 | } | |
1780 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1781 | if (sta == NULL) { | |
1782 | printk("%s: disassociation from " MACSTR ", " | |
1783 | "reason_code=%d, but STA not authenticated\n", | |
1784 | dev->name, MAC2STR(hdr->addr2), reason_code); | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | ||
1789 | /* Called only as a scheduled task for pending AP frames. */ | |
1790 | static void ap_handle_data_nullfunc(local_info_t *local, | |
d041674d | 1791 | struct ieee80211_hdr_4addr *hdr) |
ff1d2767 JM |
1792 | { |
1793 | struct net_device *dev = local->dev; | |
1794 | ||
1795 | /* some STA f/w's seem to require control::ACK frame for | |
1796 | * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does | |
1797 | * not send this.. | |
1798 | * send control::ACK for the data::nullfunc */ | |
1799 | ||
1800 | printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n"); | |
4339d328 | 1801 | prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK, |
ff1d2767 JM |
1802 | NULL, 0, hdr->addr2, 0); |
1803 | } | |
1804 | ||
1805 | ||
1806 | /* Called only as a scheduled task for pending AP frames. */ | |
1807 | static void ap_handle_dropped_data(local_info_t *local, | |
d041674d | 1808 | struct ieee80211_hdr_4addr *hdr) |
ff1d2767 JM |
1809 | { |
1810 | struct net_device *dev = local->dev; | |
1811 | struct sta_info *sta; | |
1812 | u16 reason; | |
1813 | ||
1814 | spin_lock_bh(&local->ap->sta_table_lock); | |
1815 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1816 | if (sta) | |
1817 | atomic_inc(&sta->users); | |
1818 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1819 | ||
1820 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) { | |
1821 | PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n"); | |
1822 | atomic_dec(&sta->users); | |
1823 | return; | |
1824 | } | |
1825 | ||
1826 | reason = __constant_cpu_to_le16( | |
1827 | WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); | |
4339d328 | 1828 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
ff1d2767 | 1829 | ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ? |
4339d328 | 1830 | IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC), |
ff1d2767 JM |
1831 | (char *) &reason, sizeof(reason), hdr->addr2, 0); |
1832 | ||
1833 | if (sta) | |
1834 | atomic_dec(&sta->users); | |
1835 | } | |
1836 | ||
1837 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1838 | ||
1839 | ||
1840 | /* Called only as a scheduled task for pending AP frames. */ | |
1841 | static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta, | |
1842 | struct sk_buff *skb) | |
1843 | { | |
5bee720f JM |
1844 | struct hostap_skb_tx_data *meta; |
1845 | ||
ff1d2767 JM |
1846 | if (!(sta->flags & WLAN_STA_PS)) { |
1847 | /* Station has moved to non-PS mode, so send all buffered | |
1848 | * frames using normal device queue. */ | |
1849 | dev_queue_xmit(skb); | |
1850 | return; | |
1851 | } | |
1852 | ||
1853 | /* add a flag for hostap_handle_sta_tx() to know that this skb should | |
1854 | * be passed through even though STA is using PS */ | |
5bee720f JM |
1855 | meta = (struct hostap_skb_tx_data *) skb->cb; |
1856 | meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME; | |
ff1d2767 JM |
1857 | if (!skb_queue_empty(&sta->tx_buf)) { |
1858 | /* indicate to STA that more frames follow */ | |
5bee720f | 1859 | meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA; |
ff1d2767 JM |
1860 | } |
1861 | dev_queue_xmit(skb); | |
1862 | } | |
1863 | ||
1864 | ||
1865 | /* Called only as a scheduled task for pending AP frames. */ | |
1866 | static void handle_pspoll(local_info_t *local, | |
d041674d | 1867 | struct ieee80211_hdr_4addr *hdr, |
ff1d2767 JM |
1868 | struct hostap_80211_rx_status *rx_stats) |
1869 | { | |
1870 | struct net_device *dev = local->dev; | |
1871 | struct sta_info *sta; | |
1872 | u16 aid; | |
1873 | struct sk_buff *skb; | |
1874 | ||
1875 | PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=" MACSTR ", TA=" MACSTR | |
1876 | " PWRMGT=%d\n", | |
1877 | MAC2STR(hdr->addr1), MAC2STR(hdr->addr2), | |
b2f4a2e3 | 1878 | !!(le16_to_cpu(hdr->frame_ctl) & IEEE80211_FCTL_PM)); |
ff1d2767 JM |
1879 | |
1880 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
1881 | PDEBUG(DEBUG_AP, "handle_pspoll - addr1(BSSID)=" MACSTR | |
1882 | " not own MAC\n", MAC2STR(hdr->addr1)); | |
1883 | return; | |
1884 | } | |
1885 | ||
1886 | aid = __le16_to_cpu(hdr->duration_id); | |
1887 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) { | |
1888 | PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n"); | |
1889 | return; | |
1890 | } | |
1891 | aid &= ~BIT(15) & ~BIT(14); | |
1892 | if (aid == 0 || aid > MAX_AID_TABLE_SIZE) { | |
1893 | PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid); | |
1894 | return; | |
1895 | } | |
1896 | PDEBUG(DEBUG_PS2, " aid=%d\n", aid); | |
1897 | ||
1898 | spin_lock_bh(&local->ap->sta_table_lock); | |
1899 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1900 | if (sta) | |
1901 | atomic_inc(&sta->users); | |
1902 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1903 | ||
1904 | if (sta == NULL) { | |
1905 | PDEBUG(DEBUG_PS, " STA not found\n"); | |
1906 | return; | |
1907 | } | |
1908 | if (sta->aid != aid) { | |
1909 | PDEBUG(DEBUG_PS, " received aid=%i does not match with " | |
1910 | "assoc.aid=%d\n", aid, sta->aid); | |
1911 | return; | |
1912 | } | |
1913 | ||
1914 | /* FIX: todo: | |
1915 | * - add timeout for buffering (clear aid in TIM vector if buffer timed | |
1916 | * out (expiry time must be longer than ListenInterval for | |
1917 | * the corresponding STA; "8802-11: 11.2.1.9 AP aging function" | |
1918 | * - what to do, if buffered, pspolled, and sent frame is not ACKed by | |
1919 | * sta; store buffer for later use and leave TIM aid bit set? use | |
1920 | * TX event to check whether frame was ACKed? | |
1921 | */ | |
1922 | ||
1923 | while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) { | |
1924 | /* send buffered frame .. */ | |
1925 | PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL" | |
1926 | " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf)); | |
1927 | ||
1928 | pspoll_send_buffered(local, sta, skb); | |
1929 | ||
1930 | if (sta->flags & WLAN_STA_PS) { | |
1931 | /* send only one buffered packet per PS Poll */ | |
1932 | /* FIX: should ignore further PS Polls until the | |
1933 | * buffered packet that was just sent is acknowledged | |
1934 | * (Tx or TxExc event) */ | |
1935 | break; | |
1936 | } | |
1937 | } | |
1938 | ||
1939 | if (skb_queue_empty(&sta->tx_buf)) { | |
1940 | /* try to clear aid from TIM */ | |
1941 | if (!(sta->flags & WLAN_STA_TIM)) | |
1942 | PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n", | |
1943 | aid); | |
1944 | hostap_set_tim(local, aid, 0); | |
1945 | sta->flags &= ~WLAN_STA_TIM; | |
1946 | } | |
1947 | ||
1948 | atomic_dec(&sta->users); | |
1949 | } | |
1950 | ||
1951 | ||
1952 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1953 | ||
c4028958 | 1954 | static void handle_wds_oper_queue(struct work_struct *work) |
ff1d2767 | 1955 | { |
c4028958 DH |
1956 | struct ap_data *ap = container_of(work, struct ap_data, |
1957 | wds_oper_queue); | |
1958 | local_info_t *local = ap->local; | |
ff1d2767 JM |
1959 | struct wds_oper_data *entry, *prev; |
1960 | ||
1961 | spin_lock_bh(&local->lock); | |
1962 | entry = local->ap->wds_oper_entries; | |
1963 | local->ap->wds_oper_entries = NULL; | |
1964 | spin_unlock_bh(&local->lock); | |
1965 | ||
1966 | while (entry) { | |
1967 | PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection " | |
1968 | "to AP " MACSTR "\n", | |
1969 | local->dev->name, | |
1970 | entry->type == WDS_ADD ? "adding" : "removing", | |
1971 | MAC2STR(entry->addr)); | |
1972 | if (entry->type == WDS_ADD) | |
1973 | prism2_wds_add(local, entry->addr, 0); | |
1974 | else if (entry->type == WDS_DEL) | |
1975 | prism2_wds_del(local, entry->addr, 0, 1); | |
1976 | ||
1977 | prev = entry; | |
1978 | entry = entry->next; | |
1979 | kfree(prev); | |
1980 | } | |
1981 | } | |
1982 | ||
1983 | ||
1984 | /* Called only as a scheduled task for pending AP frames. */ | |
1985 | static void handle_beacon(local_info_t *local, struct sk_buff *skb, | |
1986 | struct hostap_80211_rx_status *rx_stats) | |
1987 | { | |
d041674d | 1988 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
1989 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1990 | int len, left; | |
1991 | u16 *pos, beacon_int, capability; | |
1992 | char *ssid = NULL; | |
1993 | unsigned char *supp_rates = NULL; | |
1994 | int ssid_len = 0, supp_rates_len = 0; | |
1995 | struct sta_info *sta = NULL; | |
1996 | int new_sta = 0, channel = -1; | |
1997 | ||
1998 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1999 | ||
2000 | if (len < 8 + 2 + 2) { | |
2001 | printk(KERN_DEBUG "handle_beacon - too short payload " | |
2002 | "(len=%d)\n", len); | |
2003 | return; | |
2004 | } | |
2005 | ||
2006 | pos = (u16 *) body; | |
2007 | left = len; | |
2008 | ||
2009 | /* Timestamp (8 octets) */ | |
2010 | pos += 4; left -= 8; | |
2011 | /* Beacon interval (2 octets) */ | |
2012 | beacon_int = __le16_to_cpu(*pos); | |
2013 | pos++; left -= 2; | |
2014 | /* Capability information (2 octets) */ | |
2015 | capability = __le16_to_cpu(*pos); | |
2016 | pos++; left -= 2; | |
2017 | ||
2018 | if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS && | |
2019 | capability & WLAN_CAPABILITY_IBSS) | |
2020 | return; | |
2021 | ||
2022 | if (left >= 2) { | |
2023 | unsigned int ileft; | |
2024 | unsigned char *u = (unsigned char *) pos; | |
2025 | ||
2026 | if (*u == WLAN_EID_SSID) { | |
2027 | u++; left--; | |
2028 | ileft = *u; | |
2029 | u++; left--; | |
2030 | ||
2031 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
2032 | PDEBUG(DEBUG_AP, "SSID: overflow\n"); | |
2033 | return; | |
2034 | } | |
2035 | ||
2036 | if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID && | |
2037 | (ileft != strlen(local->essid) || | |
2038 | memcmp(local->essid, u, ileft) != 0)) { | |
2039 | /* not our SSID */ | |
2040 | return; | |
2041 | } | |
2042 | ||
2043 | ssid = u; | |
2044 | ssid_len = ileft; | |
2045 | ||
2046 | u += ileft; | |
2047 | left -= ileft; | |
2048 | } | |
2049 | ||
2050 | if (*u == WLAN_EID_SUPP_RATES) { | |
2051 | u++; left--; | |
2052 | ileft = *u; | |
2053 | u++; left--; | |
74fae82c | 2054 | |
ff1d2767 JM |
2055 | if (ileft > left || ileft == 0 || ileft > 8) { |
2056 | PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n"); | |
2057 | return; | |
2058 | } | |
2059 | ||
2060 | supp_rates = u; | |
2061 | supp_rates_len = ileft; | |
2062 | ||
2063 | u += ileft; | |
2064 | left -= ileft; | |
2065 | } | |
2066 | ||
2067 | if (*u == WLAN_EID_DS_PARAMS) { | |
2068 | u++; left--; | |
2069 | ileft = *u; | |
2070 | u++; left--; | |
74fae82c | 2071 | |
ff1d2767 JM |
2072 | if (ileft > left || ileft != 1) { |
2073 | PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n"); | |
2074 | return; | |
2075 | } | |
2076 | ||
2077 | channel = *u; | |
2078 | ||
2079 | u += ileft; | |
2080 | left -= ileft; | |
2081 | } | |
2082 | } | |
2083 | ||
2084 | spin_lock_bh(&local->ap->sta_table_lock); | |
2085 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2086 | if (sta != NULL) | |
2087 | atomic_inc(&sta->users); | |
2088 | spin_unlock_bh(&local->ap->sta_table_lock); | |
2089 | ||
2090 | if (sta == NULL) { | |
2091 | /* add new AP */ | |
2092 | new_sta = 1; | |
2093 | sta = ap_add_sta(local->ap, hdr->addr2); | |
2094 | if (sta == NULL) { | |
2095 | printk(KERN_INFO "prism2: kmalloc failed for AP " | |
2096 | "data structure\n"); | |
2097 | return; | |
2098 | } | |
2099 | hostap_event_new_sta(local->dev, sta); | |
2100 | ||
2101 | /* mark APs authentication and associated for pseudo ad-hoc | |
2102 | * style communication */ | |
2103 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2104 | ||
2105 | if (local->ap->autom_ap_wds) { | |
2106 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
2107 | } | |
2108 | } | |
2109 | ||
2110 | sta->ap = 1; | |
2111 | if (ssid) { | |
2112 | sta->u.ap.ssid_len = ssid_len; | |
2113 | memcpy(sta->u.ap.ssid, ssid, ssid_len); | |
2114 | sta->u.ap.ssid[ssid_len] = '\0'; | |
2115 | } else { | |
2116 | sta->u.ap.ssid_len = 0; | |
2117 | sta->u.ap.ssid[0] = '\0'; | |
2118 | } | |
2119 | sta->u.ap.channel = channel; | |
2120 | sta->rx_packets++; | |
2121 | sta->rx_bytes += len; | |
2122 | sta->u.ap.last_beacon = sta->last_rx = jiffies; | |
2123 | sta->capability = capability; | |
2124 | sta->listen_interval = beacon_int; | |
2125 | ||
2126 | atomic_dec(&sta->users); | |
2127 | ||
2128 | if (new_sta) { | |
2129 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
2130 | memcpy(sta->supported_rates, supp_rates, supp_rates_len); | |
2131 | prism2_check_tx_rates(sta); | |
2132 | } | |
2133 | } | |
2134 | ||
2135 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2136 | ||
2137 | ||
2138 | /* Called only as a tasklet. */ | |
2139 | static void handle_ap_item(local_info_t *local, struct sk_buff *skb, | |
2140 | struct hostap_80211_rx_status *rx_stats) | |
2141 | { | |
2142 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2143 | struct net_device *dev = local->dev; | |
2144 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2145 | u16 fc, type, stype; | |
d041674d | 2146 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2147 | |
2148 | /* FIX: should give skb->len to handler functions and check that the | |
2149 | * buffer is long enough */ | |
d041674d | 2150 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 2151 | fc = le16_to_cpu(hdr->frame_ctl); |
4339d328 JM |
2152 | type = WLAN_FC_GET_TYPE(fc); |
2153 | stype = WLAN_FC_GET_STYPE(fc); | |
ff1d2767 JM |
2154 | |
2155 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2156 | if (!local->hostapd && type == IEEE80211_FTYPE_DATA) { |
ff1d2767 JM |
2157 | PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n"); |
2158 | ||
b2f4a2e3 JM |
2159 | if (!(fc & IEEE80211_FCTL_TODS) || |
2160 | (fc & IEEE80211_FCTL_FROMDS)) { | |
4339d328 | 2161 | if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
2162 | /* no ToDS nullfunc seems to be used to check |
2163 | * AP association; so send reject message to | |
2164 | * speed up re-association */ | |
2165 | ap_handle_dropped_data(local, hdr); | |
2166 | goto done; | |
2167 | } | |
2168 | PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n", | |
2169 | fc); | |
2170 | goto done; | |
2171 | } | |
2172 | ||
2173 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
2174 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=" | |
2175 | MACSTR " not own MAC\n", | |
2176 | MAC2STR(hdr->addr1)); | |
2177 | goto done; | |
2178 | } | |
2179 | ||
4339d328 JM |
2180 | if (local->ap->nullfunc_ack && |
2181 | stype == IEEE80211_STYPE_NULLFUNC) | |
ff1d2767 JM |
2182 | ap_handle_data_nullfunc(local, hdr); |
2183 | else | |
2184 | ap_handle_dropped_data(local, hdr); | |
2185 | goto done; | |
2186 | } | |
2187 | ||
4339d328 | 2188 | if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) { |
ff1d2767 JM |
2189 | handle_beacon(local, skb, rx_stats); |
2190 | goto done; | |
2191 | } | |
2192 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2193 | ||
4339d328 | 2194 | if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) { |
ff1d2767 JM |
2195 | handle_pspoll(local, hdr, rx_stats); |
2196 | goto done; | |
2197 | } | |
2198 | ||
2199 | if (local->hostapd) { | |
2200 | PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x " | |
2201 | "subtype=0x%02x\n", type, stype); | |
2202 | goto done; | |
2203 | } | |
2204 | ||
2205 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2206 | if (type != IEEE80211_FTYPE_MGMT) { |
ff1d2767 JM |
2207 | PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n"); |
2208 | goto done; | |
2209 | } | |
2210 | ||
2211 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
2212 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=" MACSTR | |
2213 | " not own MAC\n", MAC2STR(hdr->addr1)); | |
2214 | goto done; | |
2215 | } | |
2216 | ||
2217 | if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) { | |
2218 | PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=" MACSTR | |
2219 | " not own MAC\n", MAC2STR(hdr->addr3)); | |
2220 | goto done; | |
2221 | } | |
2222 | ||
2223 | switch (stype) { | |
4339d328 | 2224 | case IEEE80211_STYPE_ASSOC_REQ: |
ff1d2767 JM |
2225 | handle_assoc(local, skb, rx_stats, 0); |
2226 | break; | |
4339d328 | 2227 | case IEEE80211_STYPE_ASSOC_RESP: |
ff1d2767 JM |
2228 | PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n"); |
2229 | break; | |
4339d328 | 2230 | case IEEE80211_STYPE_REASSOC_REQ: |
ff1d2767 JM |
2231 | handle_assoc(local, skb, rx_stats, 1); |
2232 | break; | |
4339d328 | 2233 | case IEEE80211_STYPE_REASSOC_RESP: |
ff1d2767 JM |
2234 | PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n"); |
2235 | break; | |
4339d328 | 2236 | case IEEE80211_STYPE_ATIM: |
ff1d2767 JM |
2237 | PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n"); |
2238 | break; | |
4339d328 | 2239 | case IEEE80211_STYPE_DISASSOC: |
ff1d2767 JM |
2240 | handle_disassoc(local, skb, rx_stats); |
2241 | break; | |
4339d328 | 2242 | case IEEE80211_STYPE_AUTH: |
ff1d2767 JM |
2243 | handle_authen(local, skb, rx_stats); |
2244 | break; | |
4339d328 | 2245 | case IEEE80211_STYPE_DEAUTH: |
ff1d2767 JM |
2246 | handle_deauth(local, skb, rx_stats); |
2247 | break; | |
2248 | default: | |
4339d328 JM |
2249 | PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n", |
2250 | stype >> 4); | |
ff1d2767 JM |
2251 | break; |
2252 | } | |
2253 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2254 | ||
2255 | done: | |
2256 | dev_kfree_skb(skb); | |
2257 | } | |
2258 | ||
2259 | ||
2260 | /* Called only as a tasklet (software IRQ) */ | |
2261 | void hostap_rx(struct net_device *dev, struct sk_buff *skb, | |
2262 | struct hostap_80211_rx_status *rx_stats) | |
2263 | { | |
2264 | struct hostap_interface *iface; | |
2265 | local_info_t *local; | |
2266 | u16 fc; | |
d041674d | 2267 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2268 | |
2269 | iface = netdev_priv(dev); | |
2270 | local = iface->local; | |
2271 | ||
2272 | if (skb->len < 16) | |
2273 | goto drop; | |
2274 | ||
2275 | local->stats.rx_packets++; | |
2276 | ||
d041674d | 2277 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
c0f72ca8 | 2278 | fc = le16_to_cpu(hdr->frame_ctl); |
ff1d2767 JM |
2279 | |
2280 | if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL && | |
4339d328 JM |
2281 | WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_MGMT && |
2282 | WLAN_FC_GET_STYPE(fc) == IEEE80211_STYPE_BEACON) | |
ff1d2767 JM |
2283 | goto drop; |
2284 | ||
2285 | skb->protocol = __constant_htons(ETH_P_HOSTAP); | |
2286 | handle_ap_item(local, skb, rx_stats); | |
2287 | return; | |
2288 | ||
2289 | drop: | |
2290 | dev_kfree_skb(skb); | |
2291 | } | |
2292 | ||
2293 | ||
2294 | /* Called only as a tasklet (software IRQ) */ | |
2295 | static void schedule_packet_send(local_info_t *local, struct sta_info *sta) | |
2296 | { | |
2297 | struct sk_buff *skb; | |
d041674d | 2298 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2299 | struct hostap_80211_rx_status rx_stats; |
2300 | ||
2301 | if (skb_queue_empty(&sta->tx_buf)) | |
2302 | return; | |
2303 | ||
2304 | skb = dev_alloc_skb(16); | |
2305 | if (skb == NULL) { | |
2306 | printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc " | |
2307 | "failed\n", local->dev->name); | |
2308 | return; | |
2309 | } | |
2310 | ||
d041674d | 2311 | hdr = (struct ieee80211_hdr_4addr *) skb_put(skb, 16); |
ff1d2767 JM |
2312 | |
2313 | /* Generate a fake pspoll frame to start packet delivery */ | |
c0f72ca8 | 2314 | hdr->frame_ctl = __constant_cpu_to_le16( |
4339d328 | 2315 | IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); |
ff1d2767 JM |
2316 | memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN); |
2317 | memcpy(hdr->addr2, sta->addr, ETH_ALEN); | |
2318 | hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14)); | |
2319 | ||
2320 | PDEBUG(DEBUG_PS2, "%s: Scheduling buffered packet delivery for " | |
2321 | "STA " MACSTR "\n", local->dev->name, MAC2STR(sta->addr)); | |
2322 | ||
2323 | skb->dev = local->dev; | |
2324 | ||
2325 | memset(&rx_stats, 0, sizeof(rx_stats)); | |
2326 | hostap_rx(local->dev, skb, &rx_stats); | |
2327 | } | |
2328 | ||
2329 | ||
5fad5a2e AB |
2330 | int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[], |
2331 | struct iw_quality qual[], int buf_size, | |
2332 | int aplist) | |
ff1d2767 JM |
2333 | { |
2334 | struct ap_data *ap = local->ap; | |
2335 | struct list_head *ptr; | |
2336 | int count = 0; | |
2337 | ||
2338 | spin_lock_bh(&ap->sta_table_lock); | |
2339 | ||
2340 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2341 | ptr = ptr->next) { | |
2342 | struct sta_info *sta = (struct sta_info *) ptr; | |
2343 | ||
2344 | if (aplist && !sta->ap) | |
2345 | continue; | |
2346 | addr[count].sa_family = ARPHRD_ETHER; | |
2347 | memcpy(addr[count].sa_data, sta->addr, ETH_ALEN); | |
2348 | if (sta->last_rx_silence == 0) | |
2349 | qual[count].qual = sta->last_rx_signal < 27 ? | |
2350 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2351 | else | |
2352 | qual[count].qual = sta->last_rx_signal - | |
2353 | sta->last_rx_silence - 35; | |
2354 | qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2355 | qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2356 | qual[count].updated = sta->last_rx_updated; | |
2357 | ||
c28df16e | 2358 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2359 | |
2360 | count++; | |
2361 | if (count >= buf_size) | |
2362 | break; | |
2363 | } | |
2364 | spin_unlock_bh(&ap->sta_table_lock); | |
2365 | ||
2366 | return count; | |
2367 | } | |
2368 | ||
2369 | ||
2370 | /* Translate our list of Access Points & Stations to a card independant | |
2371 | * format that the Wireless Tools will understand - Jean II */ | |
5fad5a2e | 2372 | int prism2_ap_translate_scan(struct net_device *dev, char *buffer) |
ff1d2767 JM |
2373 | { |
2374 | struct hostap_interface *iface; | |
2375 | local_info_t *local; | |
2376 | struct ap_data *ap; | |
2377 | struct list_head *ptr; | |
2378 | struct iw_event iwe; | |
2379 | char *current_ev = buffer; | |
2380 | char *end_buf = buffer + IW_SCAN_MAX_DATA; | |
2381 | #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT) | |
2382 | char buf[64]; | |
2383 | #endif | |
2384 | ||
2385 | iface = netdev_priv(dev); | |
2386 | local = iface->local; | |
2387 | ap = local->ap; | |
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 | /* First entry *MUST* be the AP MAC address */ | |
2396 | memset(&iwe, 0, sizeof(iwe)); | |
2397 | iwe.cmd = SIOCGIWAP; | |
2398 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
2399 | memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN); | |
2400 | iwe.len = IW_EV_ADDR_LEN; | |
2401 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
2402 | IW_EV_ADDR_LEN); | |
2403 | ||
2404 | /* Use the mode to indicate if it's a station or | |
2405 | * an Access Point */ | |
2406 | memset(&iwe, 0, sizeof(iwe)); | |
2407 | iwe.cmd = SIOCGIWMODE; | |
2408 | if (sta->ap) | |
2409 | iwe.u.mode = IW_MODE_MASTER; | |
2410 | else | |
2411 | iwe.u.mode = IW_MODE_INFRA; | |
2412 | iwe.len = IW_EV_UINT_LEN; | |
2413 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
2414 | IW_EV_UINT_LEN); | |
2415 | ||
2416 | /* Some quality */ | |
2417 | memset(&iwe, 0, sizeof(iwe)); | |
2418 | iwe.cmd = IWEVQUAL; | |
2419 | if (sta->last_rx_silence == 0) | |
2420 | iwe.u.qual.qual = sta->last_rx_signal < 27 ? | |
2421 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2422 | else | |
2423 | iwe.u.qual.qual = sta->last_rx_signal - | |
2424 | sta->last_rx_silence - 35; | |
2425 | iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2426 | iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2427 | iwe.u.qual.updated = sta->last_rx_updated; | |
2428 | iwe.len = IW_EV_QUAL_LEN; | |
2429 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
2430 | IW_EV_QUAL_LEN); | |
2431 | ||
2432 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2433 | if (sta->ap) { | |
2434 | memset(&iwe, 0, sizeof(iwe)); | |
2435 | iwe.cmd = SIOCGIWESSID; | |
2436 | iwe.u.data.length = sta->u.ap.ssid_len; | |
2437 | iwe.u.data.flags = 1; | |
2438 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
2439 | &iwe, | |
2440 | sta->u.ap.ssid); | |
2441 | ||
2442 | memset(&iwe, 0, sizeof(iwe)); | |
2443 | iwe.cmd = SIOCGIWENCODE; | |
2444 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
2445 | iwe.u.data.flags = | |
2446 | IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
2447 | else | |
2448 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
2449 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
2450 | &iwe, | |
2451 | sta->u.ap.ssid | |
2452 | /* 0 byte memcpy */); | |
2453 | ||
2454 | if (sta->u.ap.channel > 0 && | |
2455 | sta->u.ap.channel <= FREQ_COUNT) { | |
2456 | memset(&iwe, 0, sizeof(iwe)); | |
2457 | iwe.cmd = SIOCGIWFREQ; | |
2458 | iwe.u.freq.m = freq_list[sta->u.ap.channel - 1] | |
2459 | * 100000; | |
2460 | iwe.u.freq.e = 1; | |
2461 | current_ev = iwe_stream_add_event( | |
2462 | current_ev, end_buf, &iwe, | |
2463 | IW_EV_FREQ_LEN); | |
2464 | } | |
2465 | ||
2466 | memset(&iwe, 0, sizeof(iwe)); | |
2467 | iwe.cmd = IWEVCUSTOM; | |
2468 | sprintf(buf, "beacon_interval=%d", | |
2469 | sta->listen_interval); | |
2470 | iwe.u.data.length = strlen(buf); | |
2471 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
2472 | &iwe, buf); | |
2473 | } | |
2474 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2475 | ||
c28df16e | 2476 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2477 | |
2478 | /* To be continued, we should make good use of IWEVCUSTOM */ | |
2479 | } | |
2480 | ||
2481 | spin_unlock_bh(&ap->sta_table_lock); | |
2482 | ||
2483 | return current_ev - buffer; | |
2484 | } | |
2485 | ||
2486 | ||
2487 | static int prism2_hostapd_add_sta(struct ap_data *ap, | |
2488 | struct prism2_hostapd_param *param) | |
2489 | { | |
2490 | struct sta_info *sta; | |
2491 | ||
2492 | spin_lock_bh(&ap->sta_table_lock); | |
2493 | sta = ap_get_sta(ap, param->sta_addr); | |
2494 | if (sta) | |
2495 | atomic_inc(&sta->users); | |
2496 | spin_unlock_bh(&ap->sta_table_lock); | |
2497 | ||
2498 | if (sta == NULL) { | |
2499 | sta = ap_add_sta(ap, param->sta_addr); | |
2500 | if (sta == NULL) | |
2501 | return -1; | |
2502 | } | |
2503 | ||
2504 | if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2505 | hostap_event_new_sta(sta->local->dev, sta); | |
2506 | ||
2507 | sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2508 | sta->last_rx = jiffies; | |
2509 | sta->aid = param->u.add_sta.aid; | |
2510 | sta->capability = param->u.add_sta.capability; | |
2511 | sta->tx_supp_rates = param->u.add_sta.tx_supp_rates; | |
2512 | if (sta->tx_supp_rates & WLAN_RATE_1M) | |
2513 | sta->supported_rates[0] = 2; | |
2514 | if (sta->tx_supp_rates & WLAN_RATE_2M) | |
2515 | sta->supported_rates[1] = 4; | |
2516 | if (sta->tx_supp_rates & WLAN_RATE_5M5) | |
2517 | sta->supported_rates[2] = 11; | |
2518 | if (sta->tx_supp_rates & WLAN_RATE_11M) | |
2519 | sta->supported_rates[3] = 22; | |
2520 | prism2_check_tx_rates(sta); | |
2521 | atomic_dec(&sta->users); | |
2522 | return 0; | |
2523 | } | |
2524 | ||
2525 | ||
2526 | static int prism2_hostapd_remove_sta(struct ap_data *ap, | |
2527 | struct prism2_hostapd_param *param) | |
2528 | { | |
2529 | struct sta_info *sta; | |
2530 | ||
2531 | spin_lock_bh(&ap->sta_table_lock); | |
2532 | sta = ap_get_sta(ap, param->sta_addr); | |
2533 | if (sta) { | |
2534 | ap_sta_hash_del(ap, sta); | |
2535 | list_del(&sta->list); | |
2536 | } | |
2537 | spin_unlock_bh(&ap->sta_table_lock); | |
2538 | ||
2539 | if (!sta) | |
2540 | return -ENOENT; | |
2541 | ||
2542 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2543 | hostap_event_expired_sta(sta->local->dev, sta); | |
2544 | ap_free_sta(ap, sta); | |
2545 | ||
2546 | return 0; | |
2547 | } | |
2548 | ||
2549 | ||
2550 | static int prism2_hostapd_get_info_sta(struct ap_data *ap, | |
2551 | struct prism2_hostapd_param *param) | |
2552 | { | |
2553 | struct sta_info *sta; | |
2554 | ||
2555 | spin_lock_bh(&ap->sta_table_lock); | |
2556 | sta = ap_get_sta(ap, param->sta_addr); | |
2557 | if (sta) | |
2558 | atomic_inc(&sta->users); | |
2559 | spin_unlock_bh(&ap->sta_table_lock); | |
2560 | ||
2561 | if (!sta) | |
2562 | return -ENOENT; | |
2563 | ||
2564 | param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ; | |
2565 | ||
2566 | atomic_dec(&sta->users); | |
2567 | ||
2568 | return 1; | |
2569 | } | |
2570 | ||
2571 | ||
2572 | static int prism2_hostapd_set_flags_sta(struct ap_data *ap, | |
2573 | struct prism2_hostapd_param *param) | |
2574 | { | |
2575 | struct sta_info *sta; | |
2576 | ||
2577 | spin_lock_bh(&ap->sta_table_lock); | |
2578 | sta = ap_get_sta(ap, param->sta_addr); | |
2579 | if (sta) { | |
2580 | sta->flags |= param->u.set_flags_sta.flags_or; | |
2581 | sta->flags &= param->u.set_flags_sta.flags_and; | |
2582 | } | |
2583 | spin_unlock_bh(&ap->sta_table_lock); | |
2584 | ||
2585 | if (!sta) | |
2586 | return -ENOENT; | |
2587 | ||
2588 | return 0; | |
2589 | } | |
2590 | ||
2591 | ||
2592 | static int prism2_hostapd_sta_clear_stats(struct ap_data *ap, | |
2593 | struct prism2_hostapd_param *param) | |
2594 | { | |
2595 | struct sta_info *sta; | |
2596 | int rate; | |
2597 | ||
2598 | spin_lock_bh(&ap->sta_table_lock); | |
2599 | sta = ap_get_sta(ap, param->sta_addr); | |
2600 | if (sta) { | |
2601 | sta->rx_packets = sta->tx_packets = 0; | |
2602 | sta->rx_bytes = sta->tx_bytes = 0; | |
2603 | for (rate = 0; rate < WLAN_RATE_COUNT; rate++) { | |
2604 | sta->tx_count[rate] = 0; | |
2605 | sta->rx_count[rate] = 0; | |
2606 | } | |
2607 | } | |
2608 | spin_unlock_bh(&ap->sta_table_lock); | |
2609 | ||
2610 | if (!sta) | |
2611 | return -ENOENT; | |
2612 | ||
2613 | return 0; | |
2614 | } | |
2615 | ||
2616 | ||
5fad5a2e | 2617 | int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param) |
ff1d2767 JM |
2618 | { |
2619 | switch (param->cmd) { | |
2620 | case PRISM2_HOSTAPD_FLUSH: | |
2621 | ap_control_kickall(ap); | |
2622 | return 0; | |
2623 | case PRISM2_HOSTAPD_ADD_STA: | |
2624 | return prism2_hostapd_add_sta(ap, param); | |
2625 | case PRISM2_HOSTAPD_REMOVE_STA: | |
2626 | return prism2_hostapd_remove_sta(ap, param); | |
2627 | case PRISM2_HOSTAPD_GET_INFO_STA: | |
2628 | return prism2_hostapd_get_info_sta(ap, param); | |
2629 | case PRISM2_HOSTAPD_SET_FLAGS_STA: | |
2630 | return prism2_hostapd_set_flags_sta(ap, param); | |
2631 | case PRISM2_HOSTAPD_STA_CLEAR_STATS: | |
2632 | return prism2_hostapd_sta_clear_stats(ap, param); | |
2633 | default: | |
2634 | printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n", | |
2635 | param->cmd); | |
2636 | return -EOPNOTSUPP; | |
2637 | } | |
2638 | } | |
2639 | ||
2640 | ||
2641 | /* Update station info for host-based TX rate control and return current | |
2642 | * TX rate */ | |
2643 | static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev) | |
2644 | { | |
2645 | int ret = sta->tx_rate; | |
2646 | struct hostap_interface *iface; | |
2647 | local_info_t *local; | |
2648 | ||
2649 | iface = netdev_priv(dev); | |
2650 | local = iface->local; | |
2651 | ||
2652 | sta->tx_count[sta->tx_rate_idx]++; | |
2653 | sta->tx_since_last_failure++; | |
2654 | sta->tx_consecutive_exc = 0; | |
2655 | if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT && | |
2656 | sta->tx_rate_idx < sta->tx_max_rate) { | |
2657 | /* use next higher rate */ | |
2658 | int old_rate, new_rate; | |
2659 | old_rate = new_rate = sta->tx_rate_idx; | |
2660 | while (new_rate < sta->tx_max_rate) { | |
2661 | new_rate++; | |
2662 | if (ap_tx_rate_ok(new_rate, sta, local)) { | |
2663 | sta->tx_rate_idx = new_rate; | |
2664 | break; | |
2665 | } | |
2666 | } | |
2667 | if (old_rate != sta->tx_rate_idx) { | |
2668 | switch (sta->tx_rate_idx) { | |
2669 | case 0: sta->tx_rate = 10; break; | |
2670 | case 1: sta->tx_rate = 20; break; | |
2671 | case 2: sta->tx_rate = 55; break; | |
2672 | case 3: sta->tx_rate = 110; break; | |
2673 | default: sta->tx_rate = 0; break; | |
2674 | } | |
2675 | PDEBUG(DEBUG_AP, "%s: STA " MACSTR " TX rate raised to" | |
2676 | " %d\n", dev->name, MAC2STR(sta->addr), | |
2677 | sta->tx_rate); | |
2678 | } | |
2679 | sta->tx_since_last_failure = 0; | |
2680 | } | |
2681 | ||
2682 | return ret; | |
2683 | } | |
2684 | ||
2685 | ||
2686 | /* Called only from software IRQ. Called for each TX frame prior possible | |
2687 | * encryption and transmit. */ | |
2688 | ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx) | |
2689 | { | |
2690 | struct sta_info *sta = NULL; | |
2691 | struct sk_buff *skb = tx->skb; | |
2692 | int set_tim, ret; | |
d041674d | 2693 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2694 | struct hostap_skb_tx_data *meta; |
2695 | ||
2696 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
2697 | ret = AP_TX_CONTINUE; | |
2698 | if (local->ap == NULL || skb->len < 10 || | |
2699 | meta->iface->type == HOSTAP_INTERFACE_STA) | |
2700 | goto out; | |
2701 | ||
d041674d | 2702 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
2703 | |
2704 | if (hdr->addr1[0] & 0x01) { | |
2705 | /* broadcast/multicast frame - no AP related processing */ | |
2706 | goto out; | |
2707 | } | |
2708 | ||
2709 | /* unicast packet - check whether destination STA is associated */ | |
2710 | spin_lock(&local->ap->sta_table_lock); | |
2711 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2712 | if (sta) | |
2713 | atomic_inc(&sta->users); | |
2714 | spin_unlock(&local->ap->sta_table_lock); | |
2715 | ||
5bee720f JM |
2716 | if (local->iw_mode == IW_MODE_MASTER && sta == NULL && |
2717 | !(meta->flags & HOSTAP_TX_FLAGS_WDS) && | |
ff1d2767 JM |
2718 | meta->iface->type != HOSTAP_INTERFACE_MASTER && |
2719 | meta->iface->type != HOSTAP_INTERFACE_AP) { | |
2720 | #if 0 | |
2721 | /* This can happen, e.g., when wlan0 is added to a bridge and | |
2722 | * bridging code does not know which port is the correct target | |
2723 | * for a unicast frame. In this case, the packet is send to all | |
2724 | * ports of the bridge. Since this is a valid scenario, do not | |
2725 | * print out any errors here. */ | |
2726 | if (net_ratelimit()) { | |
2727 | printk(KERN_DEBUG "AP: drop packet to non-associated " | |
2728 | "STA " MACSTR "\n", MAC2STR(hdr->addr1)); | |
2729 | } | |
2730 | #endif | |
2731 | local->ap->tx_drop_nonassoc++; | |
2732 | ret = AP_TX_DROP; | |
2733 | goto out; | |
2734 | } | |
2735 | ||
2736 | if (sta == NULL) | |
2737 | goto out; | |
2738 | ||
2739 | if (!(sta->flags & WLAN_STA_AUTHORIZED)) | |
2740 | ret = AP_TX_CONTINUE_NOT_AUTHORIZED; | |
2741 | ||
2742 | /* Set tx_rate if using host-based TX rate control */ | |
2743 | if (!local->fw_tx_rate_control) | |
2744 | local->ap->last_tx_rate = meta->rate = | |
2745 | ap_update_sta_tx_rate(sta, local->dev); | |
2746 | ||
2747 | if (local->iw_mode != IW_MODE_MASTER) | |
2748 | goto out; | |
2749 | ||
2750 | if (!(sta->flags & WLAN_STA_PS)) | |
2751 | goto out; | |
2752 | ||
5bee720f JM |
2753 | if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) { |
2754 | /* indicate to STA that more frames follow */ | |
b2f4a2e3 JM |
2755 | hdr->frame_ctl |= |
2756 | __constant_cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
5bee720f | 2757 | } |
ff1d2767 | 2758 | |
5bee720f JM |
2759 | if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) { |
2760 | /* packet was already buffered and now send due to | |
2761 | * PS poll, so do not rebuffer it */ | |
2762 | goto out; | |
ff1d2767 JM |
2763 | } |
2764 | ||
2765 | if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) { | |
2766 | PDEBUG(DEBUG_PS, "%s: No more space in STA (" MACSTR ")'s PS " | |
2767 | "mode buffer\n", local->dev->name, MAC2STR(sta->addr)); | |
2768 | /* Make sure that TIM is set for the station (it might not be | |
2769 | * after AP wlan hw reset). */ | |
2770 | /* FIX: should fix hw reset to restore bits based on STA | |
2771 | * buffer state.. */ | |
2772 | hostap_set_tim(local, sta->aid, 1); | |
2773 | sta->flags |= WLAN_STA_TIM; | |
2774 | ret = AP_TX_DROP; | |
2775 | goto out; | |
2776 | } | |
2777 | ||
2778 | /* STA in PS mode, buffer frame for later delivery */ | |
2779 | set_tim = skb_queue_empty(&sta->tx_buf); | |
2780 | skb_queue_tail(&sta->tx_buf, skb); | |
2781 | /* FIX: could save RX time to skb and expire buffered frames after | |
2782 | * some time if STA does not poll for them */ | |
2783 | ||
2784 | if (set_tim) { | |
2785 | if (sta->flags & WLAN_STA_TIM) | |
2786 | PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n", | |
2787 | sta->aid); | |
2788 | hostap_set_tim(local, sta->aid, 1); | |
2789 | sta->flags |= WLAN_STA_TIM; | |
2790 | } | |
2791 | ||
2792 | ret = AP_TX_BUFFERED; | |
2793 | ||
2794 | out: | |
2795 | if (sta != NULL) { | |
2796 | if (ret == AP_TX_CONTINUE || | |
2797 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) { | |
2798 | sta->tx_packets++; | |
2799 | sta->tx_bytes += skb->len; | |
2800 | sta->last_tx = jiffies; | |
2801 | } | |
2802 | ||
2803 | if ((ret == AP_TX_CONTINUE || | |
2804 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) && | |
2805 | sta->crypt && tx->host_encrypt) { | |
2806 | tx->crypt = sta->crypt; | |
2807 | tx->sta_ptr = sta; /* hostap_handle_sta_release() will | |
2808 | * be called to release sta info | |
2809 | * later */ | |
2810 | } else | |
2811 | atomic_dec(&sta->users); | |
2812 | } | |
2813 | ||
2814 | return ret; | |
2815 | } | |
2816 | ||
2817 | ||
2818 | void hostap_handle_sta_release(void *ptr) | |
2819 | { | |
2820 | struct sta_info *sta = ptr; | |
2821 | atomic_dec(&sta->users); | |
2822 | } | |
2823 | ||
2824 | ||
2825 | /* Called only as a tasklet (software IRQ) */ | |
2826 | void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb) | |
2827 | { | |
2828 | struct sta_info *sta; | |
d041674d | 2829 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2830 | struct hostap_skb_tx_data *meta; |
2831 | ||
d041674d | 2832 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 JM |
2833 | meta = (struct hostap_skb_tx_data *) skb->cb; |
2834 | ||
2835 | spin_lock(&local->ap->sta_table_lock); | |
2836 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2837 | if (!sta) { | |
2838 | spin_unlock(&local->ap->sta_table_lock); | |
2839 | PDEBUG(DEBUG_AP, "%s: Could not find STA " MACSTR " for this " | |
2840 | "TX error (@%lu)\n", | |
2841 | local->dev->name, MAC2STR(hdr->addr1), jiffies); | |
2842 | return; | |
2843 | } | |
2844 | ||
2845 | sta->tx_since_last_failure = 0; | |
2846 | sta->tx_consecutive_exc++; | |
74fae82c | 2847 | |
ff1d2767 JM |
2848 | if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD && |
2849 | sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) { | |
2850 | /* use next lower rate */ | |
2851 | int old, rate; | |
2852 | old = rate = sta->tx_rate_idx; | |
2853 | while (rate > 0) { | |
2854 | rate--; | |
2855 | if (ap_tx_rate_ok(rate, sta, local)) { | |
2856 | sta->tx_rate_idx = rate; | |
2857 | break; | |
2858 | } | |
2859 | } | |
2860 | if (old != sta->tx_rate_idx) { | |
2861 | switch (sta->tx_rate_idx) { | |
2862 | case 0: sta->tx_rate = 10; break; | |
2863 | case 1: sta->tx_rate = 20; break; | |
2864 | case 2: sta->tx_rate = 55; break; | |
2865 | case 3: sta->tx_rate = 110; break; | |
2866 | default: sta->tx_rate = 0; break; | |
2867 | } | |
2868 | PDEBUG(DEBUG_AP, "%s: STA " MACSTR " TX rate lowered " | |
2869 | "to %d\n", local->dev->name, MAC2STR(sta->addr), | |
2870 | sta->tx_rate); | |
2871 | } | |
2872 | sta->tx_consecutive_exc = 0; | |
2873 | } | |
2874 | spin_unlock(&local->ap->sta_table_lock); | |
2875 | } | |
2876 | ||
2877 | ||
2878 | static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta, | |
2879 | int pwrmgt, int type, int stype) | |
2880 | { | |
2881 | if (pwrmgt && !(sta->flags & WLAN_STA_PS)) { | |
2882 | sta->flags |= WLAN_STA_PS; | |
2883 | PDEBUG(DEBUG_PS2, "STA " MACSTR " changed to use PS " | |
2884 | "mode (type=0x%02X, stype=0x%02X)\n", | |
4339d328 | 2885 | MAC2STR(sta->addr), type >> 2, stype >> 4); |
ff1d2767 JM |
2886 | } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) { |
2887 | sta->flags &= ~WLAN_STA_PS; | |
2888 | PDEBUG(DEBUG_PS2, "STA " MACSTR " changed to not use " | |
2889 | "PS mode (type=0x%02X, stype=0x%02X)\n", | |
4339d328 JM |
2890 | MAC2STR(sta->addr), type >> 2, stype >> 4); |
2891 | if (type != IEEE80211_FTYPE_CTL || | |
2892 | stype != IEEE80211_STYPE_PSPOLL) | |
ff1d2767 JM |
2893 | schedule_packet_send(local, sta); |
2894 | } | |
2895 | } | |
2896 | ||
2897 | ||
2898 | /* Called only as a tasklet (software IRQ). Called for each RX frame to update | |
c0f72ca8 | 2899 | * STA power saving state. pwrmgt is a flag from 802.11 frame_ctl field. */ |
d041674d | 2900 | int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr_4addr *hdr) |
ff1d2767 JM |
2901 | { |
2902 | struct sta_info *sta; | |
2903 | u16 fc; | |
2904 | ||
2905 | spin_lock(&local->ap->sta_table_lock); | |
2906 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2907 | if (sta) | |
2908 | atomic_inc(&sta->users); | |
2909 | spin_unlock(&local->ap->sta_table_lock); | |
2910 | ||
2911 | if (!sta) | |
2912 | return -1; | |
2913 | ||
c0f72ca8 | 2914 | fc = le16_to_cpu(hdr->frame_ctl); |
b2f4a2e3 | 2915 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
4339d328 | 2916 | WLAN_FC_GET_TYPE(fc), WLAN_FC_GET_STYPE(fc)); |
ff1d2767 JM |
2917 | |
2918 | atomic_dec(&sta->users); | |
2919 | return 0; | |
2920 | } | |
2921 | ||
2922 | ||
2923 | /* Called only as a tasklet (software IRQ). Called for each RX frame after | |
2924 | * getting RX header and payload from hardware. */ | |
2925 | ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev, | |
2926 | struct sk_buff *skb, | |
2927 | struct hostap_80211_rx_status *rx_stats, | |
2928 | int wds) | |
2929 | { | |
2930 | int ret; | |
2931 | struct sta_info *sta; | |
2932 | u16 fc, type, stype; | |
d041674d | 2933 | struct ieee80211_hdr_4addr *hdr; |
ff1d2767 JM |
2934 | |
2935 | if (local->ap == NULL) | |
2936 | return AP_RX_CONTINUE; | |
2937 | ||
d041674d | 2938 | hdr = (struct ieee80211_hdr_4addr *) skb->data; |
ff1d2767 | 2939 | |
c0f72ca8 | 2940 | fc = le16_to_cpu(hdr->frame_ctl); |
4339d328 JM |
2941 | type = WLAN_FC_GET_TYPE(fc); |
2942 | stype = WLAN_FC_GET_STYPE(fc); | |
ff1d2767 JM |
2943 | |
2944 | spin_lock(&local->ap->sta_table_lock); | |
2945 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2946 | if (sta) | |
2947 | atomic_inc(&sta->users); | |
2948 | spin_unlock(&local->ap->sta_table_lock); | |
2949 | ||
2950 | if (sta && !(sta->flags & WLAN_STA_AUTHORIZED)) | |
2951 | ret = AP_RX_CONTINUE_NOT_AUTHORIZED; | |
2952 | else | |
2953 | ret = AP_RX_CONTINUE; | |
2954 | ||
2955 | ||
b2f4a2e3 | 2956 | if (fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
2957 | if (!wds && (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) { |
2958 | if (local->hostapd) { | |
2959 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
2960 | PRISM2_RX_NON_ASSOC); | |
2961 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2962 | } else { | |
2963 | printk(KERN_DEBUG "%s: dropped received packet" | |
2964 | " from non-associated STA " MACSTR | |
2965 | " (type=0x%02x, subtype=0x%02x)\n", | |
4339d328 JM |
2966 | dev->name, MAC2STR(hdr->addr2), |
2967 | type >> 2, stype >> 4); | |
ff1d2767 JM |
2968 | hostap_rx(dev, skb, rx_stats); |
2969 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2970 | } | |
2971 | ret = AP_RX_EXIT; | |
2972 | goto out; | |
2973 | } | |
b2f4a2e3 | 2974 | } else if (fc & IEEE80211_FCTL_FROMDS) { |
ff1d2767 JM |
2975 | if (!wds) { |
2976 | /* FromDS frame - not for us; probably | |
2977 | * broadcast/multicast in another BSS - drop */ | |
2978 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { | |
2979 | printk(KERN_DEBUG "Odd.. FromDS packet " | |
2980 | "received with own BSSID\n"); | |
2981 | hostap_dump_rx_80211(dev->name, skb, rx_stats); | |
2982 | } | |
2983 | ret = AP_RX_DROP; | |
2984 | goto out; | |
2985 | } | |
4339d328 | 2986 | } else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL && |
ff1d2767 JM |
2987 | memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { |
2988 | ||
2989 | if (local->hostapd) { | |
2990 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
2991 | PRISM2_RX_NON_ASSOC); | |
2992 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2993 | } else { | |
2994 | /* At least Lucent f/w seems to send data::nullfunc | |
2995 | * frames with no ToDS flag when the current AP returns | |
2996 | * after being unavailable for some time. Speed up | |
2997 | * re-association by informing the station about it not | |
2998 | * being associated. */ | |
2999 | printk(KERN_DEBUG "%s: rejected received nullfunc " | |
3000 | "frame without ToDS from not associated STA " | |
3001 | MACSTR "\n", | |
3002 | dev->name, MAC2STR(hdr->addr2)); | |
3003 | hostap_rx(dev, skb, rx_stats); | |
3004 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3005 | } | |
3006 | ret = AP_RX_EXIT; | |
3007 | goto out; | |
4339d328 | 3008 | } else if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
3009 | /* At least Lucent cards seem to send periodic nullfunc |
3010 | * frames with ToDS. Let these through to update SQ | |
3011 | * stats and PS state. Nullfunc frames do not contain | |
3012 | * any data and they will be dropped below. */ | |
3013 | } else { | |
3014 | /* If BSSID (Addr3) is foreign, this frame is a normal | |
3015 | * broadcast frame from an IBSS network. Drop it silently. | |
3016 | * If BSSID is own, report the dropping of this frame. */ | |
3017 | if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { | |
3018 | printk(KERN_DEBUG "%s: dropped received packet from " | |
3019 | MACSTR " with no ToDS flag (type=0x%02x, " | |
3020 | "subtype=0x%02x)\n", dev->name, | |
4339d328 | 3021 | MAC2STR(hdr->addr2), type >> 2, stype >> 4); |
ff1d2767 JM |
3022 | hostap_dump_rx_80211(dev->name, skb, rx_stats); |
3023 | } | |
3024 | ret = AP_RX_DROP; | |
3025 | goto out; | |
3026 | } | |
3027 | ||
3028 | if (sta) { | |
b2f4a2e3 | 3029 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
ff1d2767 JM |
3030 | type, stype); |
3031 | ||
3032 | sta->rx_packets++; | |
3033 | sta->rx_bytes += skb->len; | |
3034 | sta->last_rx = jiffies; | |
3035 | } | |
3036 | ||
4339d328 | 3037 | if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC && |
b2f4a2e3 | 3038 | fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
3039 | if (local->hostapd) { |
3040 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
3041 | PRISM2_RX_NULLFUNC_ACK); | |
3042 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
3043 | } else { | |
3044 | /* some STA f/w's seem to require control::ACK frame | |
3045 | * for data::nullfunc, but Prism2 f/w 0.8.0 (at least | |
3046 | * from Compaq) does not send this.. Try to generate | |
3047 | * ACK for these frames from the host driver to make | |
3048 | * power saving work with, e.g., Lucent WaveLAN f/w */ | |
3049 | hostap_rx(dev, skb, rx_stats); | |
3050 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3051 | } | |
3052 | ret = AP_RX_EXIT; | |
3053 | goto out; | |
3054 | } | |
3055 | ||
3056 | out: | |
3057 | if (sta) | |
3058 | atomic_dec(&sta->users); | |
3059 | ||
3060 | return ret; | |
3061 | } | |
3062 | ||
3063 | ||
3064 | /* Called only as a tasklet (software IRQ) */ | |
3065 | int hostap_handle_sta_crypto(local_info_t *local, | |
d041674d | 3066 | struct ieee80211_hdr_4addr *hdr, |
62fe7e37 JM |
3067 | struct ieee80211_crypt_data **crypt, |
3068 | void **sta_ptr) | |
ff1d2767 JM |
3069 | { |
3070 | struct sta_info *sta; | |
3071 | ||
3072 | spin_lock(&local->ap->sta_table_lock); | |
3073 | sta = ap_get_sta(local->ap, hdr->addr2); | |
3074 | if (sta) | |
3075 | atomic_inc(&sta->users); | |
3076 | spin_unlock(&local->ap->sta_table_lock); | |
3077 | ||
3078 | if (!sta) | |
3079 | return -1; | |
3080 | ||
3081 | if (sta->crypt) { | |
3082 | *crypt = sta->crypt; | |
3083 | *sta_ptr = sta; | |
3084 | /* hostap_handle_sta_release() will be called to release STA | |
3085 | * info */ | |
3086 | } else | |
3087 | atomic_dec(&sta->users); | |
3088 | ||
3089 | return 0; | |
3090 | } | |
3091 | ||
3092 | ||
3093 | /* Called only as a tasklet (software IRQ) */ | |
3094 | int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr) | |
3095 | { | |
3096 | struct sta_info *sta; | |
3097 | int ret = 0; | |
3098 | ||
3099 | spin_lock(&ap->sta_table_lock); | |
3100 | sta = ap_get_sta(ap, sta_addr); | |
3101 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
3102 | ret = 1; | |
3103 | spin_unlock(&ap->sta_table_lock); | |
3104 | ||
3105 | return ret; | |
3106 | } | |
3107 | ||
3108 | ||
3109 | /* Called only as a tasklet (software IRQ) */ | |
3110 | int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr) | |
3111 | { | |
3112 | struct sta_info *sta; | |
3113 | int ret = 0; | |
3114 | ||
3115 | spin_lock(&ap->sta_table_lock); | |
3116 | sta = ap_get_sta(ap, sta_addr); | |
3117 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap && | |
3118 | ((sta->flags & WLAN_STA_AUTHORIZED) || | |
3119 | ap->local->ieee_802_1x == 0)) | |
3120 | ret = 1; | |
3121 | spin_unlock(&ap->sta_table_lock); | |
3122 | ||
3123 | return ret; | |
3124 | } | |
3125 | ||
3126 | ||
3127 | /* Called only as a tasklet (software IRQ) */ | |
3128 | int hostap_add_sta(struct ap_data *ap, u8 *sta_addr) | |
3129 | { | |
3130 | struct sta_info *sta; | |
3131 | int ret = 1; | |
3132 | ||
3133 | if (!ap) | |
3134 | return -1; | |
3135 | ||
3136 | spin_lock(&ap->sta_table_lock); | |
3137 | sta = ap_get_sta(ap, sta_addr); | |
3138 | if (sta) | |
3139 | ret = 0; | |
3140 | spin_unlock(&ap->sta_table_lock); | |
3141 | ||
3142 | if (ret == 1) { | |
3143 | sta = ap_add_sta(ap, sta_addr); | |
3144 | if (!sta) | |
54b85f48 | 3145 | return -1; |
ff1d2767 JM |
3146 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; |
3147 | sta->ap = 1; | |
3148 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
3149 | /* No way of knowing which rates are supported since we did not | |
3150 | * get supported rates element from beacon/assoc req. Assume | |
3151 | * that remote end supports all 802.11b rates. */ | |
3152 | sta->supported_rates[0] = 0x82; | |
3153 | sta->supported_rates[1] = 0x84; | |
3154 | sta->supported_rates[2] = 0x0b; | |
3155 | sta->supported_rates[3] = 0x16; | |
3156 | sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M | | |
3157 | WLAN_RATE_5M5 | WLAN_RATE_11M; | |
3158 | sta->tx_rate = 110; | |
3159 | sta->tx_max_rate = sta->tx_rate_idx = 3; | |
3160 | } | |
3161 | ||
3162 | return ret; | |
3163 | } | |
3164 | ||
3165 | ||
3166 | /* Called only as a tasklet (software IRQ) */ | |
3167 | int hostap_update_rx_stats(struct ap_data *ap, | |
d041674d | 3168 | struct ieee80211_hdr_4addr *hdr, |
ff1d2767 JM |
3169 | struct hostap_80211_rx_status *rx_stats) |
3170 | { | |
3171 | struct sta_info *sta; | |
3172 | ||
3173 | if (!ap) | |
3174 | return -1; | |
3175 | ||
3176 | spin_lock(&ap->sta_table_lock); | |
3177 | sta = ap_get_sta(ap, hdr->addr2); | |
3178 | if (sta) { | |
3179 | sta->last_rx_silence = rx_stats->noise; | |
3180 | sta->last_rx_signal = rx_stats->signal; | |
3181 | sta->last_rx_rate = rx_stats->rate; | |
c28df16e | 3182 | sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
ff1d2767 JM |
3183 | if (rx_stats->rate == 10) |
3184 | sta->rx_count[0]++; | |
3185 | else if (rx_stats->rate == 20) | |
3186 | sta->rx_count[1]++; | |
3187 | else if (rx_stats->rate == 55) | |
3188 | sta->rx_count[2]++; | |
3189 | else if (rx_stats->rate == 110) | |
3190 | sta->rx_count[3]++; | |
3191 | } | |
3192 | spin_unlock(&ap->sta_table_lock); | |
3193 | ||
3194 | return sta ? 0 : -1; | |
3195 | } | |
3196 | ||
3197 | ||
3198 | void hostap_update_rates(local_info_t *local) | |
3199 | { | |
3200 | struct list_head *ptr; | |
3201 | struct ap_data *ap = local->ap; | |
3202 | ||
3203 | if (!ap) | |
3204 | return; | |
3205 | ||
3206 | spin_lock_bh(&ap->sta_table_lock); | |
3207 | for (ptr = ap->sta_list.next; ptr != &ap->sta_list; ptr = ptr->next) { | |
3208 | struct sta_info *sta = (struct sta_info *) ptr; | |
3209 | prism2_check_tx_rates(sta); | |
3210 | } | |
3211 | spin_unlock_bh(&ap->sta_table_lock); | |
3212 | } | |
3213 | ||
3214 | ||
5fad5a2e AB |
3215 | void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent, |
3216 | struct ieee80211_crypt_data ***crypt) | |
ff1d2767 JM |
3217 | { |
3218 | struct sta_info *sta; | |
3219 | ||
3220 | spin_lock_bh(&ap->sta_table_lock); | |
3221 | sta = ap_get_sta(ap, addr); | |
3222 | if (sta) | |
3223 | atomic_inc(&sta->users); | |
3224 | spin_unlock_bh(&ap->sta_table_lock); | |
3225 | ||
3226 | if (!sta && permanent) | |
3227 | sta = ap_add_sta(ap, addr); | |
3228 | ||
3229 | if (!sta) | |
3230 | return NULL; | |
3231 | ||
3232 | if (permanent) | |
3233 | sta->flags |= WLAN_STA_PERM; | |
3234 | ||
3235 | *crypt = &sta->crypt; | |
3236 | ||
3237 | return sta; | |
3238 | } | |
3239 | ||
3240 | ||
3241 | void hostap_add_wds_links(local_info_t *local) | |
3242 | { | |
3243 | struct ap_data *ap = local->ap; | |
3244 | struct list_head *ptr; | |
3245 | ||
3246 | spin_lock_bh(&ap->sta_table_lock); | |
3247 | list_for_each(ptr, &ap->sta_list) { | |
3248 | struct sta_info *sta = list_entry(ptr, struct sta_info, list); | |
3249 | if (sta->ap) | |
3250 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
3251 | } | |
3252 | spin_unlock_bh(&ap->sta_table_lock); | |
3253 | ||
3254 | schedule_work(&local->ap->wds_oper_queue); | |
3255 | } | |
3256 | ||
3257 | ||
3258 | void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type) | |
3259 | { | |
3260 | struct wds_oper_data *entry; | |
3261 | ||
3262 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
3263 | if (!entry) | |
3264 | return; | |
3265 | memcpy(entry->addr, addr, ETH_ALEN); | |
3266 | entry->type = type; | |
3267 | spin_lock_bh(&local->lock); | |
3268 | entry->next = local->ap->wds_oper_entries; | |
3269 | local->ap->wds_oper_entries = entry; | |
3270 | spin_unlock_bh(&local->lock); | |
3271 | ||
3272 | schedule_work(&local->ap->wds_oper_queue); | |
3273 | } | |
3274 | ||
3275 | ||
3276 | EXPORT_SYMBOL(hostap_init_data); | |
3277 | EXPORT_SYMBOL(hostap_init_ap_proc); | |
3278 | EXPORT_SYMBOL(hostap_free_data); | |
3279 | EXPORT_SYMBOL(hostap_check_sta_fw_version); | |
ff1d2767 | 3280 | EXPORT_SYMBOL(hostap_handle_sta_tx_exc); |
ff1d2767 | 3281 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
ff1d2767 | 3282 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |