Commit | Line | Data |
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ff1d2767 JM |
1 | /* |
2 | * Intersil Prism2 driver with Host AP (software access point) support | |
3 | * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen | |
85d32e7b JM |
4 | * <j@w1.fi> |
5 | * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> | |
ff1d2767 JM |
6 | * |
7 | * This file is to be included into hostap.c when S/W AP functionality is | |
8 | * compiled. | |
9 | * | |
10 | * AP: FIX: | |
11 | * - if unicast Class 2 (assoc,reassoc,disassoc) frame received from | |
12 | * unauthenticated STA, send deauth. frame (8802.11: 5.5) | |
13 | * - if unicast Class 3 (data with to/from DS,deauth,pspoll) frame received | |
14 | * from authenticated, but unassoc STA, send disassoc frame (8802.11: 5.5) | |
15 | * - if unicast Class 3 received from unauthenticated STA, send deauth. frame | |
16 | * (8802.11: 5.5) | |
17 | */ | |
18 | ||
5fad5a2e AB |
19 | #include <linux/proc_fs.h> |
20 | #include <linux/delay.h> | |
21 | #include <linux/random.h> | |
1ea893fd | 22 | #include <linux/if_arp.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
5fad5a2e AB |
24 | |
25 | #include "hostap_wlan.h" | |
26 | #include "hostap.h" | |
27 | #include "hostap_ap.h" | |
28 | ||
ff1d2767 JM |
29 | static int other_ap_policy[MAX_PARM_DEVICES] = { AP_OTHER_AP_SKIP_ALL, |
30 | DEF_INTS }; | |
31 | module_param_array(other_ap_policy, int, NULL, 0444); | |
32 | MODULE_PARM_DESC(other_ap_policy, "Other AP beacon monitoring policy (0-3)"); | |
33 | ||
34 | static int ap_max_inactivity[MAX_PARM_DEVICES] = { AP_MAX_INACTIVITY_SEC, | |
35 | DEF_INTS }; | |
36 | module_param_array(ap_max_inactivity, int, NULL, 0444); | |
37 | MODULE_PARM_DESC(ap_max_inactivity, "AP timeout (in seconds) for station " | |
38 | "inactivity"); | |
39 | ||
40 | static int ap_bridge_packets[MAX_PARM_DEVICES] = { 1, DEF_INTS }; | |
41 | module_param_array(ap_bridge_packets, int, NULL, 0444); | |
42 | MODULE_PARM_DESC(ap_bridge_packets, "Bridge packets directly between " | |
43 | "stations"); | |
44 | ||
45 | static int autom_ap_wds[MAX_PARM_DEVICES] = { 0, DEF_INTS }; | |
46 | module_param_array(autom_ap_wds, int, NULL, 0444); | |
47 | MODULE_PARM_DESC(autom_ap_wds, "Add WDS connections to other APs " | |
48 | "automatically"); | |
49 | ||
50 | ||
51 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta); | |
52 | static void hostap_event_expired_sta(struct net_device *dev, | |
53 | struct sta_info *sta); | |
c4028958 | 54 | static void handle_add_proc_queue(struct work_struct *work); |
ff1d2767 JM |
55 | |
56 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 57 | static void handle_wds_oper_queue(struct work_struct *work); |
ff1d2767 | 58 | static void prism2_send_mgmt(struct net_device *dev, |
4339d328 | 59 | u16 type_subtype, char *body, |
ff1d2767 JM |
60 | int body_len, u8 *addr, u16 tx_cb_idx); |
61 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
62 | ||
63 | ||
64 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
65 | static int ap_debug_proc_read(char *page, char **start, off_t off, | |
66 | int count, int *eof, void *data) | |
67 | { | |
68 | char *p = page; | |
69 | struct ap_data *ap = (struct ap_data *) data; | |
70 | ||
71 | if (off != 0) { | |
72 | *eof = 1; | |
73 | return 0; | |
74 | } | |
75 | ||
76 | p += sprintf(p, "BridgedUnicastFrames=%u\n", ap->bridged_unicast); | |
77 | p += sprintf(p, "BridgedMulticastFrames=%u\n", ap->bridged_multicast); | |
78 | p += sprintf(p, "max_inactivity=%u\n", ap->max_inactivity / HZ); | |
79 | p += sprintf(p, "bridge_packets=%u\n", ap->bridge_packets); | |
80 | p += sprintf(p, "nullfunc_ack=%u\n", ap->nullfunc_ack); | |
81 | p += sprintf(p, "autom_ap_wds=%u\n", ap->autom_ap_wds); | |
82 | p += sprintf(p, "auth_algs=%u\n", ap->local->auth_algs); | |
83 | p += sprintf(p, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc); | |
84 | ||
85 | return (p - page); | |
86 | } | |
87 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
88 | ||
89 | ||
90 | static void ap_sta_hash_add(struct ap_data *ap, struct sta_info *sta) | |
91 | { | |
92 | sta->hnext = ap->sta_hash[STA_HASH(sta->addr)]; | |
93 | ap->sta_hash[STA_HASH(sta->addr)] = sta; | |
94 | } | |
95 | ||
96 | static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta) | |
97 | { | |
98 | struct sta_info *s; | |
99 | ||
100 | s = ap->sta_hash[STA_HASH(sta->addr)]; | |
101 | if (s == NULL) return; | |
102 | if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) { | |
103 | ap->sta_hash[STA_HASH(sta->addr)] = s->hnext; | |
104 | return; | |
105 | } | |
106 | ||
107 | while (s->hnext != NULL && memcmp(s->hnext->addr, sta->addr, ETH_ALEN) | |
108 | != 0) | |
109 | s = s->hnext; | |
110 | if (s->hnext != NULL) | |
111 | s->hnext = s->hnext->hnext; | |
112 | else | |
e174961c JB |
113 | printk("AP: could not remove STA %pM from hash table\n", |
114 | sta->addr); | |
ff1d2767 JM |
115 | } |
116 | ||
117 | static void ap_free_sta(struct ap_data *ap, struct sta_info *sta) | |
118 | { | |
119 | if (sta->ap && sta->local) | |
120 | hostap_event_expired_sta(sta->local->dev, sta); | |
121 | ||
122 | if (ap->proc != NULL) { | |
123 | char name[20]; | |
e174961c | 124 | sprintf(name, "%pM", sta->addr); |
ff1d2767 JM |
125 | remove_proc_entry(name, ap->proc); |
126 | } | |
127 | ||
128 | if (sta->crypt) { | |
129 | sta->crypt->ops->deinit(sta->crypt->priv); | |
130 | kfree(sta->crypt); | |
131 | sta->crypt = NULL; | |
132 | } | |
133 | ||
134 | skb_queue_purge(&sta->tx_buf); | |
135 | ||
136 | ap->num_sta--; | |
137 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
138 | if (sta->aid > 0) | |
139 | ap->sta_aid[sta->aid - 1] = NULL; | |
140 | ||
141 | if (!sta->ap && sta->u.sta.challenge) | |
142 | kfree(sta->u.sta.challenge); | |
143 | del_timer(&sta->timer); | |
144 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
145 | ||
146 | kfree(sta); | |
147 | } | |
148 | ||
149 | ||
150 | static void hostap_set_tim(local_info_t *local, int aid, int set) | |
151 | { | |
152 | if (local->func->set_tim) | |
153 | local->func->set_tim(local->dev, aid, set); | |
154 | } | |
155 | ||
156 | ||
157 | static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta) | |
158 | { | |
159 | union iwreq_data wrqu; | |
160 | memset(&wrqu, 0, sizeof(wrqu)); | |
161 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
162 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
163 | wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL); | |
164 | } | |
165 | ||
166 | ||
167 | static void hostap_event_expired_sta(struct net_device *dev, | |
168 | struct sta_info *sta) | |
169 | { | |
170 | union iwreq_data wrqu; | |
171 | memset(&wrqu, 0, sizeof(wrqu)); | |
172 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
173 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
174 | wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL); | |
175 | } | |
176 | ||
177 | ||
178 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
179 | ||
180 | static void ap_handle_timer(unsigned long data) | |
181 | { | |
182 | struct sta_info *sta = (struct sta_info *) data; | |
183 | local_info_t *local; | |
184 | struct ap_data *ap; | |
185 | unsigned long next_time = 0; | |
186 | int was_assoc; | |
187 | ||
188 | if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) { | |
189 | PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n"); | |
190 | return; | |
191 | } | |
192 | ||
193 | local = sta->local; | |
194 | ap = local->ap; | |
195 | was_assoc = sta->flags & WLAN_STA_ASSOC; | |
196 | ||
197 | if (atomic_read(&sta->users) != 0) | |
198 | next_time = jiffies + HZ; | |
199 | else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH)) | |
200 | next_time = jiffies + ap->max_inactivity; | |
201 | ||
202 | if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) { | |
203 | /* station activity detected; reset timeout state */ | |
204 | sta->timeout_next = STA_NULLFUNC; | |
205 | next_time = sta->last_rx + ap->max_inactivity; | |
206 | } else if (sta->timeout_next == STA_DISASSOC && | |
207 | !(sta->flags & WLAN_STA_PENDING_POLL)) { | |
208 | /* STA ACKed data nullfunc frame poll */ | |
209 | sta->timeout_next = STA_NULLFUNC; | |
210 | next_time = jiffies + ap->max_inactivity; | |
211 | } | |
212 | ||
213 | if (next_time) { | |
214 | sta->timer.expires = next_time; | |
215 | add_timer(&sta->timer); | |
216 | return; | |
217 | } | |
218 | ||
219 | if (sta->ap) | |
220 | sta->timeout_next = STA_DEAUTH; | |
221 | ||
222 | if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) { | |
223 | spin_lock(&ap->sta_table_lock); | |
224 | ap_sta_hash_del(ap, sta); | |
225 | list_del(&sta->list); | |
226 | spin_unlock(&ap->sta_table_lock); | |
227 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
228 | } else if (sta->timeout_next == STA_DISASSOC) | |
229 | sta->flags &= ~WLAN_STA_ASSOC; | |
230 | ||
231 | if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
232 | hostap_event_expired_sta(local->dev, sta); | |
233 | ||
234 | if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 && | |
235 | !skb_queue_empty(&sta->tx_buf)) { | |
236 | hostap_set_tim(local, sta->aid, 0); | |
237 | sta->flags &= ~WLAN_STA_TIM; | |
238 | } | |
239 | ||
240 | if (sta->ap) { | |
241 | if (ap->autom_ap_wds) { | |
242 | PDEBUG(DEBUG_AP, "%s: removing automatic WDS " | |
e174961c JB |
243 | "connection to AP %pM\n", |
244 | local->dev->name, sta->addr); | |
ff1d2767 JM |
245 | hostap_wds_link_oper(local, sta->addr, WDS_DEL); |
246 | } | |
247 | } else if (sta->timeout_next == STA_NULLFUNC) { | |
248 | /* send data frame to poll STA and check whether this frame | |
249 | * is ACKed */ | |
4339d328 | 250 | /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but |
ff1d2767 JM |
251 | * it is apparently not retried so TX Exc events are not |
252 | * received for it */ | |
253 | sta->flags |= WLAN_STA_PENDING_POLL; | |
4339d328 JM |
254 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA | |
255 | IEEE80211_STYPE_DATA, NULL, 0, | |
ff1d2767 JM |
256 | sta->addr, ap->tx_callback_poll); |
257 | } else { | |
258 | int deauth = sta->timeout_next == STA_DEAUTH; | |
8a9faf3c | 259 | __le16 resp; |
e174961c | 260 | PDEBUG(DEBUG_AP, "%s: sending %s info to STA %pM" |
ff1d2767 JM |
261 | "(last=%lu, jiffies=%lu)\n", |
262 | local->dev->name, | |
263 | deauth ? "deauthentication" : "disassociation", | |
e174961c | 264 | sta->addr, sta->last_rx, jiffies); |
ff1d2767 JM |
265 | |
266 | resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID : | |
267 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
4339d328 JM |
268 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT | |
269 | (deauth ? IEEE80211_STYPE_DEAUTH : | |
270 | IEEE80211_STYPE_DISASSOC), | |
ff1d2767 JM |
271 | (char *) &resp, 2, sta->addr, 0); |
272 | } | |
273 | ||
274 | if (sta->timeout_next == STA_DEAUTH) { | |
275 | if (sta->flags & WLAN_STA_PERM) { | |
e174961c | 276 | PDEBUG(DEBUG_AP, "%s: STA %pM" |
0795af57 JP |
277 | " would have been removed, " |
278 | "but it has 'perm' flag\n", | |
e174961c | 279 | local->dev->name, sta->addr); |
ff1d2767 JM |
280 | } else |
281 | ap_free_sta(ap, sta); | |
282 | return; | |
283 | } | |
284 | ||
285 | if (sta->timeout_next == STA_NULLFUNC) { | |
286 | sta->timeout_next = STA_DISASSOC; | |
287 | sta->timer.expires = jiffies + AP_DISASSOC_DELAY; | |
288 | } else { | |
289 | sta->timeout_next = STA_DEAUTH; | |
290 | sta->timer.expires = jiffies + AP_DEAUTH_DELAY; | |
291 | } | |
292 | ||
293 | add_timer(&sta->timer); | |
294 | } | |
295 | ||
296 | ||
297 | void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap, | |
298 | int resend) | |
299 | { | |
300 | u8 addr[ETH_ALEN]; | |
8a9faf3c | 301 | __le16 resp; |
ff1d2767 JM |
302 | int i; |
303 | ||
304 | PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name); | |
305 | memset(addr, 0xff, ETH_ALEN); | |
306 | ||
8a9faf3c | 307 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); |
ff1d2767 JM |
308 | |
309 | /* deauth message sent; try to resend it few times; the message is | |
310 | * broadcast, so it may be delayed until next DTIM; there is not much | |
311 | * else we can do at this point since the driver is going to be shut | |
312 | * down */ | |
313 | for (i = 0; i < 5; i++) { | |
4339d328 JM |
314 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
315 | IEEE80211_STYPE_DEAUTH, | |
ff1d2767 JM |
316 | (char *) &resp, 2, addr, 0); |
317 | ||
318 | if (!resend || ap->num_sta <= 0) | |
319 | return; | |
320 | ||
321 | mdelay(50); | |
322 | } | |
323 | } | |
324 | ||
325 | ||
326 | static int ap_control_proc_read(char *page, char **start, off_t off, | |
327 | int count, int *eof, void *data) | |
328 | { | |
329 | char *p = page; | |
330 | struct ap_data *ap = (struct ap_data *) data; | |
331 | char *policy_txt; | |
ff1d2767 JM |
332 | struct mac_entry *entry; |
333 | ||
334 | if (off != 0) { | |
335 | *eof = 1; | |
336 | return 0; | |
337 | } | |
338 | ||
339 | switch (ap->mac_restrictions.policy) { | |
340 | case MAC_POLICY_OPEN: | |
341 | policy_txt = "open"; | |
342 | break; | |
343 | case MAC_POLICY_ALLOW: | |
344 | policy_txt = "allow"; | |
345 | break; | |
346 | case MAC_POLICY_DENY: | |
347 | policy_txt = "deny"; | |
348 | break; | |
349 | default: | |
350 | policy_txt = "unknown"; | |
351 | break; | |
ee289b64 | 352 | } |
ff1d2767 JM |
353 | p += sprintf(p, "MAC policy: %s\n", policy_txt); |
354 | p += sprintf(p, "MAC entries: %u\n", ap->mac_restrictions.entries); | |
355 | p += sprintf(p, "MAC list:\n"); | |
356 | spin_lock_bh(&ap->mac_restrictions.lock); | |
c1505731 | 357 | list_for_each_entry(entry, &ap->mac_restrictions.mac_list, list) { |
ff1d2767 JM |
358 | if (p - page > PAGE_SIZE - 80) { |
359 | p += sprintf(p, "All entries did not fit one page.\n"); | |
360 | break; | |
361 | } | |
362 | ||
e174961c | 363 | p += sprintf(p, "%pM\n", entry->addr); |
ff1d2767 JM |
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 | { | |
ff1d2767 JM |
416 | struct mac_entry *entry; |
417 | int found = 0; | |
418 | ||
419 | if (mac_restrictions->policy == MAC_POLICY_OPEN) | |
420 | return 0; | |
421 | ||
422 | spin_lock_bh(&mac_restrictions->lock); | |
c1505731 | 423 | list_for_each_entry(entry, &mac_restrictions->mac_list, list) { |
ff1d2767 JM |
424 | if (memcmp(entry->addr, mac, ETH_ALEN) == 0) { |
425 | found = 1; | |
426 | break; | |
427 | } | |
428 | } | |
429 | spin_unlock_bh(&mac_restrictions->lock); | |
430 | ||
431 | if (mac_restrictions->policy == MAC_POLICY_ALLOW) | |
432 | return !found; | |
433 | else | |
434 | return found; | |
435 | } | |
436 | ||
437 | ||
5fad5a2e | 438 | void ap_control_flush_macs(struct mac_restrictions *mac_restrictions) |
ff1d2767 JM |
439 | { |
440 | struct list_head *ptr, *n; | |
441 | struct mac_entry *entry; | |
442 | ||
443 | if (mac_restrictions->entries == 0) | |
444 | return; | |
445 | ||
446 | spin_lock_bh(&mac_restrictions->lock); | |
447 | for (ptr = mac_restrictions->mac_list.next, n = ptr->next; | |
448 | ptr != &mac_restrictions->mac_list; | |
449 | ptr = n, n = ptr->next) { | |
450 | entry = list_entry(ptr, struct mac_entry, list); | |
451 | list_del(ptr); | |
452 | kfree(entry); | |
453 | } | |
454 | mac_restrictions->entries = 0; | |
455 | spin_unlock_bh(&mac_restrictions->lock); | |
456 | } | |
457 | ||
458 | ||
5fad5a2e | 459 | int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac) |
ff1d2767 JM |
460 | { |
461 | struct sta_info *sta; | |
8a9faf3c | 462 | __le16 resp; |
ff1d2767 JM |
463 | |
464 | spin_lock_bh(&ap->sta_table_lock); | |
465 | sta = ap_get_sta(ap, mac); | |
466 | if (sta) { | |
467 | ap_sta_hash_del(ap, sta); | |
468 | list_del(&sta->list); | |
469 | } | |
470 | spin_unlock_bh(&ap->sta_table_lock); | |
471 | ||
472 | if (!sta) | |
473 | return -EINVAL; | |
474 | ||
475 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); | |
4339d328 | 476 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH, |
ff1d2767 JM |
477 | (char *) &resp, 2, sta->addr, 0); |
478 | ||
479 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
480 | hostap_event_expired_sta(dev, sta); | |
481 | ||
482 | ap_free_sta(ap, sta); | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
488 | ||
489 | ||
5fad5a2e | 490 | void ap_control_kickall(struct ap_data *ap) |
ff1d2767 JM |
491 | { |
492 | struct list_head *ptr, *n; | |
493 | struct sta_info *sta; | |
74fae82c | 494 | |
ff1d2767 JM |
495 | spin_lock_bh(&ap->sta_table_lock); |
496 | for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list; | |
497 | ptr = n, n = ptr->next) { | |
498 | sta = list_entry(ptr, struct sta_info, list); | |
499 | ap_sta_hash_del(ap, sta); | |
500 | list_del(&sta->list); | |
501 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
502 | hostap_event_expired_sta(sta->local->dev, sta); | |
503 | ap_free_sta(ap, sta); | |
504 | } | |
505 | spin_unlock_bh(&ap->sta_table_lock); | |
506 | } | |
507 | ||
508 | ||
509 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
510 | ||
511 | #define PROC_LIMIT (PAGE_SIZE - 80) | |
512 | ||
513 | static int prism2_ap_proc_read(char *page, char **start, off_t off, | |
514 | int count, int *eof, void *data) | |
515 | { | |
516 | char *p = page; | |
517 | struct ap_data *ap = (struct ap_data *) data; | |
c1505731 | 518 | struct sta_info *sta; |
ff1d2767 JM |
519 | int i; |
520 | ||
521 | if (off > PROC_LIMIT) { | |
522 | *eof = 1; | |
523 | return 0; | |
524 | } | |
525 | ||
526 | p += sprintf(p, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n"); | |
527 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 528 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
529 | if (!sta->ap) |
530 | continue; | |
531 | ||
e174961c JB |
532 | p += sprintf(p, "%pM %d %d %d %d '", |
533 | sta->addr, | |
ff1d2767 JM |
534 | sta->u.ap.channel, sta->last_rx_signal, |
535 | sta->last_rx_silence, sta->last_rx_rate); | |
536 | for (i = 0; i < sta->u.ap.ssid_len; i++) | |
537 | p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 && | |
538 | sta->u.ap.ssid[i] < 127) ? | |
539 | "%c" : "<%02x>"), | |
540 | sta->u.ap.ssid[i]); | |
541 | p += sprintf(p, "'"); | |
542 | if (sta->capability & WLAN_CAPABILITY_ESS) | |
543 | p += sprintf(p, " [ESS]"); | |
544 | if (sta->capability & WLAN_CAPABILITY_IBSS) | |
545 | p += sprintf(p, " [IBSS]"); | |
546 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
547 | p += sprintf(p, " [WEP]"); | |
548 | p += sprintf(p, "\n"); | |
549 | ||
550 | if ((p - page) > PROC_LIMIT) { | |
551 | printk(KERN_DEBUG "hostap: ap proc did not fit\n"); | |
552 | break; | |
553 | } | |
554 | } | |
555 | spin_unlock_bh(&ap->sta_table_lock); | |
556 | ||
557 | if ((p - page) <= off) { | |
558 | *eof = 1; | |
559 | return 0; | |
560 | } | |
561 | ||
562 | *start = page + off; | |
563 | ||
564 | return (p - page - off); | |
565 | } | |
566 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
567 | ||
568 | ||
569 | void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver) | |
570 | { | |
571 | if (!ap) | |
572 | return; | |
573 | ||
574 | if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) { | |
575 | PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - " | |
576 | "firmware upgrade recommended\n"); | |
577 | ap->nullfunc_ack = 1; | |
578 | } else | |
579 | ap->nullfunc_ack = 0; | |
580 | ||
581 | if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) { | |
582 | printk(KERN_WARNING "%s: Warning: secondary station firmware " | |
583 | "version 1.4.2 does not seem to work in Host AP mode\n", | |
584 | ap->local->dev->name); | |
585 | } | |
586 | } | |
587 | ||
588 | ||
589 | /* Called only as a tasklet (software IRQ) */ | |
590 | static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data) | |
591 | { | |
592 | struct ap_data *ap = data; | |
1ea893fd | 593 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
594 | |
595 | if (!ap->local->hostapd || !ap->local->apdev) { | |
596 | dev_kfree_skb(skb); | |
597 | return; | |
598 | } | |
599 | ||
ff1d2767 JM |
600 | /* Pass the TX callback frame to the hostapd; use 802.11 header version |
601 | * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */ | |
602 | ||
1ea893fd DW |
603 | hdr = (struct ieee80211_hdr *) skb->data; |
604 | hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_VERS); | |
605 | hdr->frame_control |= cpu_to_le16(ok ? BIT(1) : BIT(0)); | |
ff1d2767 JM |
606 | |
607 | skb->dev = ap->local->apdev; | |
1ea893fd | 608 | skb_pull(skb, hostap_80211_get_hdrlen(hdr->frame_control)); |
ff1d2767 | 609 | skb->pkt_type = PACKET_OTHERHOST; |
c1b4aa3f | 610 | skb->protocol = cpu_to_be16(ETH_P_802_2); |
ff1d2767 JM |
611 | memset(skb->cb, 0, sizeof(skb->cb)); |
612 | netif_rx(skb); | |
613 | } | |
614 | ||
615 | ||
616 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
617 | /* Called only as a tasklet (software IRQ) */ | |
618 | static void hostap_ap_tx_cb_auth(struct sk_buff *skb, int ok, void *data) | |
619 | { | |
620 | struct ap_data *ap = data; | |
621 | struct net_device *dev = ap->local->dev; | |
1ea893fd DW |
622 | struct ieee80211_hdr *hdr; |
623 | u16 auth_alg, auth_transaction, status; | |
8a9faf3c | 624 | __le16 *pos; |
ff1d2767 JM |
625 | struct sta_info *sta = NULL; |
626 | char *txt = NULL; | |
627 | ||
628 | if (ap->local->hostapd) { | |
629 | dev_kfree_skb(skb); | |
630 | return; | |
631 | } | |
632 | ||
1ea893fd DW |
633 | hdr = (struct ieee80211_hdr *) skb->data; |
634 | if (!ieee80211_is_auth(hdr->frame_control) || | |
ff1d2767 JM |
635 | skb->len < IEEE80211_MGMT_HDR_LEN + 6) { |
636 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_auth received invalid " | |
637 | "frame\n", dev->name); | |
638 | dev_kfree_skb(skb); | |
639 | return; | |
640 | } | |
641 | ||
8a9faf3c | 642 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
643 | auth_alg = le16_to_cpu(*pos++); |
644 | auth_transaction = le16_to_cpu(*pos++); | |
645 | status = le16_to_cpu(*pos++); | |
646 | ||
647 | if (!ok) { | |
648 | txt = "frame was not ACKed"; | |
649 | goto done; | |
650 | } | |
651 | ||
652 | spin_lock(&ap->sta_table_lock); | |
653 | sta = ap_get_sta(ap, hdr->addr1); | |
654 | if (sta) | |
655 | atomic_inc(&sta->users); | |
656 | spin_unlock(&ap->sta_table_lock); | |
657 | ||
658 | if (!sta) { | |
659 | txt = "STA not found"; | |
660 | goto done; | |
661 | } | |
662 | ||
663 | if (status == WLAN_STATUS_SUCCESS && | |
664 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || | |
665 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { | |
666 | txt = "STA authenticated"; | |
667 | sta->flags |= WLAN_STA_AUTH; | |
668 | sta->last_auth = jiffies; | |
669 | } else if (status != WLAN_STATUS_SUCCESS) | |
670 | txt = "authentication failed"; | |
671 | ||
672 | done: | |
673 | if (sta) | |
674 | atomic_dec(&sta->users); | |
675 | if (txt) { | |
e174961c | 676 | PDEBUG(DEBUG_AP, "%s: %pM auth_cb - alg=%d " |
0795af57 | 677 | "trans#=%d status=%d - %s\n", |
e174961c | 678 | dev->name, hdr->addr1, |
21f644f3 | 679 | auth_alg, auth_transaction, status, txt); |
ff1d2767 JM |
680 | } |
681 | dev_kfree_skb(skb); | |
682 | } | |
683 | ||
684 | ||
685 | /* Called only as a tasklet (software IRQ) */ | |
686 | static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data) | |
687 | { | |
688 | struct ap_data *ap = data; | |
689 | struct net_device *dev = ap->local->dev; | |
1ea893fd | 690 | struct ieee80211_hdr *hdr; |
1baf8a90 | 691 | u16 status; |
8a9faf3c | 692 | __le16 *pos; |
ff1d2767 JM |
693 | struct sta_info *sta = NULL; |
694 | char *txt = NULL; | |
695 | ||
696 | if (ap->local->hostapd) { | |
697 | dev_kfree_skb(skb); | |
698 | return; | |
699 | } | |
700 | ||
1ea893fd | 701 | hdr = (struct ieee80211_hdr *) skb->data; |
1ea893fd DW |
702 | if ((!ieee80211_is_assoc_resp(hdr->frame_control) && |
703 | !ieee80211_is_reassoc_resp(hdr->frame_control)) || | |
ff1d2767 JM |
704 | skb->len < IEEE80211_MGMT_HDR_LEN + 4) { |
705 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid " | |
706 | "frame\n", dev->name); | |
707 | dev_kfree_skb(skb); | |
708 | return; | |
709 | } | |
710 | ||
711 | if (!ok) { | |
712 | txt = "frame was not ACKed"; | |
713 | goto done; | |
714 | } | |
715 | ||
716 | spin_lock(&ap->sta_table_lock); | |
717 | sta = ap_get_sta(ap, hdr->addr1); | |
718 | if (sta) | |
719 | atomic_inc(&sta->users); | |
720 | spin_unlock(&ap->sta_table_lock); | |
721 | ||
722 | if (!sta) { | |
723 | txt = "STA not found"; | |
724 | goto done; | |
725 | } | |
726 | ||
8a9faf3c | 727 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
728 | pos++; |
729 | status = le16_to_cpu(*pos++); | |
730 | if (status == WLAN_STATUS_SUCCESS) { | |
731 | if (!(sta->flags & WLAN_STA_ASSOC)) | |
732 | hostap_event_new_sta(dev, sta); | |
733 | txt = "STA associated"; | |
734 | sta->flags |= WLAN_STA_ASSOC; | |
735 | sta->last_assoc = jiffies; | |
736 | } else | |
737 | txt = "association failed"; | |
738 | ||
739 | done: | |
740 | if (sta) | |
741 | atomic_dec(&sta->users); | |
742 | if (txt) { | |
e174961c JB |
743 | PDEBUG(DEBUG_AP, "%s: %pM assoc_cb - %s\n", |
744 | dev->name, hdr->addr1, txt); | |
ff1d2767 JM |
745 | } |
746 | dev_kfree_skb(skb); | |
747 | } | |
748 | ||
749 | /* Called only as a tasklet (software IRQ); TX callback for poll frames used | |
750 | * in verifying whether the STA is still present. */ | |
751 | static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data) | |
752 | { | |
753 | struct ap_data *ap = data; | |
1ea893fd | 754 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
755 | struct sta_info *sta; |
756 | ||
757 | if (skb->len < 24) | |
758 | goto fail; | |
1ea893fd | 759 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
760 | if (ok) { |
761 | spin_lock(&ap->sta_table_lock); | |
762 | sta = ap_get_sta(ap, hdr->addr1); | |
763 | if (sta) | |
764 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
765 | spin_unlock(&ap->sta_table_lock); | |
766 | } else { | |
e174961c JB |
767 | PDEBUG(DEBUG_AP, |
768 | "%s: STA %pM did not ACK activity poll frame\n", | |
769 | ap->local->dev->name, hdr->addr1); | |
ff1d2767 JM |
770 | } |
771 | ||
772 | fail: | |
773 | dev_kfree_skb(skb); | |
774 | } | |
775 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
776 | ||
777 | ||
778 | void hostap_init_data(local_info_t *local) | |
779 | { | |
780 | struct ap_data *ap = local->ap; | |
781 | ||
782 | if (ap == NULL) { | |
783 | printk(KERN_WARNING "hostap_init_data: ap == NULL\n"); | |
784 | return; | |
785 | } | |
786 | memset(ap, 0, sizeof(struct ap_data)); | |
787 | ap->local = local; | |
788 | ||
789 | ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx); | |
790 | ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx); | |
791 | ap->max_inactivity = | |
792 | GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ; | |
793 | ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx); | |
794 | ||
795 | spin_lock_init(&ap->sta_table_lock); | |
796 | INIT_LIST_HEAD(&ap->sta_list); | |
797 | ||
798 | /* Initialize task queue structure for AP management */ | |
c4028958 | 799 | INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue); |
ff1d2767 JM |
800 | |
801 | ap->tx_callback_idx = | |
802 | hostap_tx_callback_register(local, hostap_ap_tx_cb, ap); | |
803 | if (ap->tx_callback_idx == 0) | |
804 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
805 | "AP\n", local->dev->name); | |
806 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 807 | INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue); |
ff1d2767 JM |
808 | |
809 | ap->tx_callback_auth = | |
810 | hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap); | |
811 | ap->tx_callback_assoc = | |
812 | hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap); | |
813 | ap->tx_callback_poll = | |
814 | hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap); | |
815 | if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 || | |
816 | ap->tx_callback_poll == 0) | |
817 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
818 | "AP\n", local->dev->name); | |
819 | ||
820 | spin_lock_init(&ap->mac_restrictions.lock); | |
821 | INIT_LIST_HEAD(&ap->mac_restrictions.mac_list); | |
822 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
823 | ||
824 | ap->initialized = 1; | |
825 | } | |
826 | ||
827 | ||
828 | void hostap_init_ap_proc(local_info_t *local) | |
829 | { | |
830 | struct ap_data *ap = local->ap; | |
831 | ||
832 | ap->proc = local->proc; | |
833 | if (ap->proc == NULL) | |
834 | return; | |
835 | ||
836 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
837 | create_proc_read_entry("ap_debug", 0, ap->proc, | |
838 | ap_debug_proc_read, ap); | |
839 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
840 | ||
841 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
842 | create_proc_read_entry("ap_control", 0, ap->proc, | |
843 | ap_control_proc_read, ap); | |
844 | create_proc_read_entry("ap", 0, ap->proc, | |
845 | prism2_ap_proc_read, ap); | |
846 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
847 | ||
848 | } | |
849 | ||
850 | ||
851 | void hostap_free_data(struct ap_data *ap) | |
852 | { | |
c1505731 | 853 | struct sta_info *n, *sta; |
ff1d2767 JM |
854 | |
855 | if (ap == NULL || !ap->initialized) { | |
856 | printk(KERN_DEBUG "hostap_free_data: ap has not yet been " | |
857 | "initialized - skip resource freeing\n"); | |
858 | return; | |
859 | } | |
860 | ||
16359533 TH |
861 | flush_work_sync(&ap->add_sta_proc_queue); |
862 | ||
ff1d2767 | 863 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
16359533 | 864 | flush_work_sync(&ap->wds_oper_queue); |
ff1d2767 JM |
865 | if (ap->crypt) |
866 | ap->crypt->deinit(ap->crypt_priv); | |
867 | ap->crypt = ap->crypt_priv = NULL; | |
868 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
869 | ||
c1505731 | 870 | list_for_each_entry_safe(sta, n, &ap->sta_list, list) { |
ff1d2767 JM |
871 | ap_sta_hash_del(ap, sta); |
872 | list_del(&sta->list); | |
873 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
874 | hostap_event_expired_sta(sta->local->dev, sta); | |
875 | ap_free_sta(ap, sta); | |
876 | } | |
877 | ||
878 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
879 | if (ap->proc != NULL) { | |
880 | remove_proc_entry("ap_debug", ap->proc); | |
881 | } | |
882 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
883 | ||
884 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
885 | if (ap->proc != NULL) { | |
886 | remove_proc_entry("ap", ap->proc); | |
887 | remove_proc_entry("ap_control", ap->proc); | |
888 | } | |
889 | ap_control_flush_macs(&ap->mac_restrictions); | |
890 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
891 | ||
892 | ap->initialized = 0; | |
893 | } | |
894 | ||
895 | ||
896 | /* caller should have mutex for AP STA list handling */ | |
897 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta) | |
898 | { | |
899 | struct sta_info *s; | |
900 | ||
901 | s = ap->sta_hash[STA_HASH(sta)]; | |
902 | while (s != NULL && memcmp(s->addr, sta, ETH_ALEN) != 0) | |
903 | s = s->hnext; | |
904 | return s; | |
905 | } | |
906 | ||
907 | ||
908 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
909 | ||
910 | /* Called from timer handler and from scheduled AP queue handlers */ | |
911 | static void prism2_send_mgmt(struct net_device *dev, | |
4339d328 | 912 | u16 type_subtype, char *body, |
ff1d2767 JM |
913 | int body_len, u8 *addr, u16 tx_cb_idx) |
914 | { | |
915 | struct hostap_interface *iface; | |
916 | local_info_t *local; | |
1ea893fd | 917 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
918 | u16 fc; |
919 | struct sk_buff *skb; | |
920 | struct hostap_skb_tx_data *meta; | |
921 | int hdrlen; | |
922 | ||
923 | iface = netdev_priv(dev); | |
924 | local = iface->local; | |
925 | dev = local->dev; /* always use master radio device */ | |
926 | iface = netdev_priv(dev); | |
927 | ||
928 | if (!(dev->flags & IFF_UP)) { | |
929 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - " | |
930 | "cannot send frame\n", dev->name); | |
931 | return; | |
932 | } | |
933 | ||
934 | skb = dev_alloc_skb(sizeof(*hdr) + body_len); | |
935 | if (skb == NULL) { | |
936 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate " | |
937 | "skb\n", dev->name); | |
938 | return; | |
939 | } | |
940 | ||
4339d328 | 941 | fc = type_subtype; |
1ea893fd DW |
942 | hdrlen = hostap_80211_get_hdrlen(cpu_to_le16(type_subtype)); |
943 | hdr = (struct ieee80211_hdr *) skb_put(skb, hdrlen); | |
ff1d2767 JM |
944 | if (body) |
945 | memcpy(skb_put(skb, body_len), body, body_len); | |
946 | ||
947 | memset(hdr, 0, hdrlen); | |
948 | ||
949 | /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11 | |
950 | * tx_control instead of using local->tx_control */ | |
951 | ||
952 | ||
953 | memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */ | |
1ea893fd | 954 | if (ieee80211_is_data(hdr->frame_control)) { |
b2f4a2e3 | 955 | fc |= IEEE80211_FCTL_FROMDS; |
ff1d2767 JM |
956 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */ |
957 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */ | |
1ea893fd | 958 | } else if (ieee80211_is_ctl(hdr->frame_control)) { |
ff1d2767 JM |
959 | /* control:ACK does not have addr2 or addr3 */ |
960 | memset(hdr->addr2, 0, ETH_ALEN); | |
961 | memset(hdr->addr3, 0, ETH_ALEN); | |
962 | } else { | |
963 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */ | |
964 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */ | |
965 | } | |
966 | ||
1ea893fd | 967 | hdr->frame_control = cpu_to_le16(fc); |
ff1d2767 JM |
968 | |
969 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
970 | memset(meta, 0, sizeof(*meta)); | |
971 | meta->magic = HOSTAP_SKB_TX_DATA_MAGIC; | |
972 | meta->iface = iface; | |
973 | meta->tx_cb_idx = tx_cb_idx; | |
974 | ||
975 | skb->dev = dev; | |
459a98ed | 976 | skb_reset_mac_header(skb); |
c1d2bbe1 | 977 | skb_reset_network_header(skb); |
ff1d2767 JM |
978 | dev_queue_xmit(skb); |
979 | } | |
980 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
981 | ||
982 | ||
983 | static int prism2_sta_proc_read(char *page, char **start, off_t off, | |
984 | int count, int *eof, void *data) | |
985 | { | |
986 | char *p = page; | |
987 | struct sta_info *sta = (struct sta_info *) data; | |
988 | int i; | |
989 | ||
990 | /* FIX: possible race condition.. the STA data could have just expired, | |
991 | * but proc entry was still here so that the read could have started; | |
992 | * some locking should be done here.. */ | |
993 | ||
994 | if (off != 0) { | |
995 | *eof = 1; | |
996 | return 0; | |
997 | } | |
998 | ||
e174961c | 999 | p += sprintf(p, "%s=%pM\nusers=%d\naid=%d\n" |
ff1d2767 JM |
1000 | "flags=0x%04x%s%s%s%s%s%s%s\n" |
1001 | "capability=0x%02x\nlisten_interval=%d\nsupported_rates=", | |
1002 | sta->ap ? "AP" : "STA", | |
e174961c | 1003 | sta->addr, atomic_read(&sta->users), sta->aid, |
ff1d2767 JM |
1004 | sta->flags, |
1005 | sta->flags & WLAN_STA_AUTH ? " AUTH" : "", | |
1006 | sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "", | |
1007 | sta->flags & WLAN_STA_PS ? " PS" : "", | |
1008 | sta->flags & WLAN_STA_TIM ? " TIM" : "", | |
1009 | sta->flags & WLAN_STA_PERM ? " PERM" : "", | |
1010 | sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "", | |
1011 | sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "", | |
1012 | sta->capability, sta->listen_interval); | |
1013 | /* supported_rates: 500 kbit/s units with msb ignored */ | |
1014 | for (i = 0; i < sizeof(sta->supported_rates); i++) | |
1015 | if (sta->supported_rates[i] != 0) | |
1016 | p += sprintf(p, "%d%sMbps ", | |
1017 | (sta->supported_rates[i] & 0x7f) / 2, | |
1018 | sta->supported_rates[i] & 1 ? ".5" : ""); | |
1019 | p += sprintf(p, "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n" | |
1020 | "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n" | |
1021 | "tx_packets=%lu\n" | |
1022 | "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n" | |
1023 | "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n" | |
1024 | "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n" | |
1025 | "tx[11M]=%d\n" | |
1026 | "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n", | |
1027 | jiffies, sta->last_auth, sta->last_assoc, sta->last_rx, | |
1028 | sta->last_tx, | |
1029 | sta->rx_packets, sta->tx_packets, sta->rx_bytes, | |
1030 | sta->tx_bytes, skb_queue_len(&sta->tx_buf), | |
1031 | sta->last_rx_silence, | |
1032 | sta->last_rx_signal, sta->last_rx_rate / 10, | |
1033 | sta->last_rx_rate % 10 ? ".5" : "", | |
1034 | sta->tx_rate, sta->tx_count[0], sta->tx_count[1], | |
1035 | sta->tx_count[2], sta->tx_count[3], sta->rx_count[0], | |
1036 | sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]); | |
1037 | if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats) | |
1038 | p = sta->crypt->ops->print_stats(p, sta->crypt->priv); | |
1039 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1040 | if (sta->ap) { | |
1041 | if (sta->u.ap.channel >= 0) | |
1042 | p += sprintf(p, "channel=%d\n", sta->u.ap.channel); | |
1043 | p += sprintf(p, "ssid="); | |
1044 | for (i = 0; i < sta->u.ap.ssid_len; i++) | |
1045 | p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 && | |
1046 | sta->u.ap.ssid[i] < 127) ? | |
1047 | "%c" : "<%02x>"), | |
1048 | sta->u.ap.ssid[i]); | |
1049 | p += sprintf(p, "\n"); | |
1050 | } | |
1051 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1052 | ||
1053 | return (p - page); | |
1054 | } | |
1055 | ||
1056 | ||
c4028958 | 1057 | static void handle_add_proc_queue(struct work_struct *work) |
ff1d2767 | 1058 | { |
c4028958 DH |
1059 | struct ap_data *ap = container_of(work, struct ap_data, |
1060 | add_sta_proc_queue); | |
ff1d2767 JM |
1061 | struct sta_info *sta; |
1062 | char name[20]; | |
1063 | struct add_sta_proc_data *entry, *prev; | |
1064 | ||
1065 | entry = ap->add_sta_proc_entries; | |
1066 | ap->add_sta_proc_entries = NULL; | |
1067 | ||
1068 | while (entry) { | |
1069 | spin_lock_bh(&ap->sta_table_lock); | |
1070 | sta = ap_get_sta(ap, entry->addr); | |
1071 | if (sta) | |
1072 | atomic_inc(&sta->users); | |
1073 | spin_unlock_bh(&ap->sta_table_lock); | |
1074 | ||
1075 | if (sta) { | |
e174961c | 1076 | sprintf(name, "%pM", sta->addr); |
ff1d2767 JM |
1077 | sta->proc = create_proc_read_entry( |
1078 | name, 0, ap->proc, | |
1079 | prism2_sta_proc_read, sta); | |
1080 | ||
1081 | atomic_dec(&sta->users); | |
1082 | } | |
1083 | ||
1084 | prev = entry; | |
1085 | entry = entry->next; | |
1086 | kfree(prev); | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | ||
1091 | static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr) | |
1092 | { | |
1093 | struct sta_info *sta; | |
1094 | ||
b0471bb7 | 1095 | sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC); |
ff1d2767 JM |
1096 | if (sta == NULL) { |
1097 | PDEBUG(DEBUG_AP, "AP: kmalloc failed\n"); | |
1098 | return NULL; | |
1099 | } | |
1100 | ||
1101 | /* initialize STA info data */ | |
ff1d2767 JM |
1102 | sta->local = ap->local; |
1103 | skb_queue_head_init(&sta->tx_buf); | |
1104 | memcpy(sta->addr, addr, ETH_ALEN); | |
1105 | ||
1106 | atomic_inc(&sta->users); | |
1107 | spin_lock_bh(&ap->sta_table_lock); | |
1108 | list_add(&sta->list, &ap->sta_list); | |
1109 | ap->num_sta++; | |
1110 | ap_sta_hash_add(ap, sta); | |
1111 | spin_unlock_bh(&ap->sta_table_lock); | |
1112 | ||
1113 | if (ap->proc) { | |
1114 | struct add_sta_proc_data *entry; | |
1115 | /* schedule a non-interrupt context process to add a procfs | |
1116 | * entry for the STA since procfs code use GFP_KERNEL */ | |
1117 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
1118 | if (entry) { | |
1119 | memcpy(entry->addr, sta->addr, ETH_ALEN); | |
1120 | entry->next = ap->add_sta_proc_entries; | |
1121 | ap->add_sta_proc_entries = entry; | |
1122 | schedule_work(&ap->add_sta_proc_queue); | |
1123 | } else | |
1124 | printk(KERN_DEBUG "Failed to add STA proc data\n"); | |
1125 | } | |
1126 | ||
1127 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1128 | init_timer(&sta->timer); | |
1129 | sta->timer.expires = jiffies + ap->max_inactivity; | |
1130 | sta->timer.data = (unsigned long) sta; | |
1131 | sta->timer.function = ap_handle_timer; | |
1132 | if (!ap->local->hostapd) | |
1133 | add_timer(&sta->timer); | |
1134 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1135 | ||
1136 | return sta; | |
1137 | } | |
1138 | ||
1139 | ||
1140 | static int ap_tx_rate_ok(int rateidx, struct sta_info *sta, | |
1141 | local_info_t *local) | |
1142 | { | |
1143 | if (rateidx > sta->tx_max_rate || | |
1144 | !(sta->tx_supp_rates & (1 << rateidx))) | |
1145 | return 0; | |
1146 | ||
1147 | if (local->tx_rate_control != 0 && | |
1148 | !(local->tx_rate_control & (1 << rateidx))) | |
1149 | return 0; | |
1150 | ||
1151 | return 1; | |
1152 | } | |
1153 | ||
1154 | ||
1155 | static void prism2_check_tx_rates(struct sta_info *sta) | |
1156 | { | |
1157 | int i; | |
1158 | ||
1159 | sta->tx_supp_rates = 0; | |
1160 | for (i = 0; i < sizeof(sta->supported_rates); i++) { | |
1161 | if ((sta->supported_rates[i] & 0x7f) == 2) | |
1162 | sta->tx_supp_rates |= WLAN_RATE_1M; | |
1163 | if ((sta->supported_rates[i] & 0x7f) == 4) | |
1164 | sta->tx_supp_rates |= WLAN_RATE_2M; | |
1165 | if ((sta->supported_rates[i] & 0x7f) == 11) | |
1166 | sta->tx_supp_rates |= WLAN_RATE_5M5; | |
1167 | if ((sta->supported_rates[i] & 0x7f) == 22) | |
1168 | sta->tx_supp_rates |= WLAN_RATE_11M; | |
1169 | } | |
1170 | sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0; | |
1171 | if (sta->tx_supp_rates & WLAN_RATE_1M) { | |
1172 | sta->tx_max_rate = 0; | |
1173 | if (ap_tx_rate_ok(0, sta, sta->local)) { | |
1174 | sta->tx_rate = 10; | |
1175 | sta->tx_rate_idx = 0; | |
1176 | } | |
1177 | } | |
1178 | if (sta->tx_supp_rates & WLAN_RATE_2M) { | |
1179 | sta->tx_max_rate = 1; | |
1180 | if (ap_tx_rate_ok(1, sta, sta->local)) { | |
1181 | sta->tx_rate = 20; | |
1182 | sta->tx_rate_idx = 1; | |
1183 | } | |
1184 | } | |
1185 | if (sta->tx_supp_rates & WLAN_RATE_5M5) { | |
1186 | sta->tx_max_rate = 2; | |
1187 | if (ap_tx_rate_ok(2, sta, sta->local)) { | |
1188 | sta->tx_rate = 55; | |
1189 | sta->tx_rate_idx = 2; | |
1190 | } | |
1191 | } | |
1192 | if (sta->tx_supp_rates & WLAN_RATE_11M) { | |
1193 | sta->tx_max_rate = 3; | |
1194 | if (ap_tx_rate_ok(3, sta, sta->local)) { | |
1195 | sta->tx_rate = 110; | |
1196 | sta->tx_rate_idx = 3; | |
1197 | } | |
1198 | } | |
1199 | } | |
1200 | ||
1201 | ||
1202 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1203 | ||
1204 | static void ap_crypt_init(struct ap_data *ap) | |
1205 | { | |
274bfb8d | 1206 | ap->crypt = lib80211_get_crypto_ops("WEP"); |
ff1d2767 JM |
1207 | |
1208 | if (ap->crypt) { | |
1209 | if (ap->crypt->init) { | |
1210 | ap->crypt_priv = ap->crypt->init(0); | |
1211 | if (ap->crypt_priv == NULL) | |
1212 | ap->crypt = NULL; | |
1213 | else { | |
1214 | u8 key[WEP_KEY_LEN]; | |
1215 | get_random_bytes(key, WEP_KEY_LEN); | |
1216 | ap->crypt->set_key(key, WEP_KEY_LEN, NULL, | |
1217 | ap->crypt_priv); | |
1218 | } | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | if (ap->crypt == NULL) { | |
1223 | printk(KERN_WARNING "AP could not initialize WEP: load module " | |
274bfb8d | 1224 | "lib80211_crypt_wep.ko\n"); |
ff1d2767 JM |
1225 | } |
1226 | } | |
1227 | ||
1228 | ||
1229 | /* Generate challenge data for shared key authentication. IEEE 802.11 specifies | |
25d1fbfd | 1230 | * that WEP algorithm is used for generating challenge. This should be unique, |
ff1d2767 JM |
1231 | * but otherwise there is not really need for randomness etc. Initialize WEP |
1232 | * with pseudo random key and then use increasing IV to get unique challenge | |
1233 | * streams. | |
1234 | * | |
1235 | * Called only as a scheduled task for pending AP frames. | |
1236 | */ | |
1237 | static char * ap_auth_make_challenge(struct ap_data *ap) | |
1238 | { | |
1239 | char *tmpbuf; | |
1240 | struct sk_buff *skb; | |
1241 | ||
1242 | if (ap->crypt == NULL) { | |
1243 | ap_crypt_init(ap); | |
1244 | if (ap->crypt == NULL) | |
1245 | return NULL; | |
1246 | } | |
1247 | ||
5cbded58 | 1248 | tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC); |
ff1d2767 JM |
1249 | if (tmpbuf == NULL) { |
1250 | PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n"); | |
1251 | return NULL; | |
1252 | } | |
1253 | ||
1254 | skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN + | |
5bfc819b JK |
1255 | ap->crypt->extra_mpdu_prefix_len + |
1256 | ap->crypt->extra_mpdu_postfix_len); | |
ff1d2767 JM |
1257 | if (skb == NULL) { |
1258 | kfree(tmpbuf); | |
1259 | return NULL; | |
1260 | } | |
1261 | ||
5bfc819b | 1262 | skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len); |
ff1d2767 JM |
1263 | memset(skb_put(skb, WLAN_AUTH_CHALLENGE_LEN), 0, |
1264 | WLAN_AUTH_CHALLENGE_LEN); | |
1265 | if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) { | |
1266 | dev_kfree_skb(skb); | |
1267 | kfree(tmpbuf); | |
1268 | return NULL; | |
1269 | } | |
1270 | ||
d626f62b ACM |
1271 | skb_copy_from_linear_data_offset(skb, ap->crypt->extra_mpdu_prefix_len, |
1272 | tmpbuf, WLAN_AUTH_CHALLENGE_LEN); | |
ff1d2767 JM |
1273 | dev_kfree_skb(skb); |
1274 | ||
1275 | return tmpbuf; | |
1276 | } | |
1277 | ||
1278 | ||
1279 | /* Called only as a scheduled task for pending AP frames. */ | |
1280 | static void handle_authen(local_info_t *local, struct sk_buff *skb, | |
1281 | struct hostap_80211_rx_status *rx_stats) | |
1282 | { | |
1283 | struct net_device *dev = local->dev; | |
1ea893fd | 1284 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1285 | size_t hdrlen; |
1286 | struct ap_data *ap = local->ap; | |
1287 | char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL; | |
1288 | int len, olen; | |
8a9faf3c AV |
1289 | u16 auth_alg, auth_transaction, status_code; |
1290 | __le16 *pos; | |
1ea893fd | 1291 | u16 resp = WLAN_STATUS_SUCCESS; |
ff1d2767 | 1292 | struct sta_info *sta = NULL; |
274bfb8d | 1293 | struct lib80211_crypt_data *crypt; |
ff1d2767 JM |
1294 | char *txt = ""; |
1295 | ||
1296 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1297 | ||
1ea893fd | 1298 | hdrlen = hostap_80211_get_hdrlen(hdr->frame_control); |
ff1d2767 JM |
1299 | |
1300 | if (len < 6) { | |
1301 | PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload " | |
e174961c | 1302 | "(len=%d) from %pM\n", dev->name, len, hdr->addr2); |
ff1d2767 JM |
1303 | return; |
1304 | } | |
1305 | ||
1306 | spin_lock_bh(&local->ap->sta_table_lock); | |
1307 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1308 | if (sta) | |
1309 | atomic_inc(&sta->users); | |
1310 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1311 | ||
1312 | if (sta && sta->crypt) | |
1313 | crypt = sta->crypt; | |
1314 | else { | |
1315 | int idx = 0; | |
1316 | if (skb->len >= hdrlen + 3) | |
1317 | idx = skb->data[hdrlen + 3] >> 6; | |
274bfb8d | 1318 | crypt = local->crypt_info.crypt[idx]; |
ff1d2767 JM |
1319 | } |
1320 | ||
8a9faf3c | 1321 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
1322 | auth_alg = __le16_to_cpu(*pos); |
1323 | pos++; | |
1324 | auth_transaction = __le16_to_cpu(*pos); | |
1325 | pos++; | |
1326 | status_code = __le16_to_cpu(*pos); | |
1327 | pos++; | |
1328 | ||
1329 | if (memcmp(dev->dev_addr, hdr->addr2, ETH_ALEN) == 0 || | |
1330 | ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) { | |
1331 | txt = "authentication denied"; | |
1332 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1333 | goto fail; | |
1334 | } | |
1335 | ||
1336 | if (((local->auth_algs & PRISM2_AUTH_OPEN) && | |
1337 | auth_alg == WLAN_AUTH_OPEN) || | |
1338 | ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) && | |
1339 | crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) { | |
1340 | } else { | |
1341 | txt = "unsupported algorithm"; | |
1342 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
1343 | goto fail; | |
1344 | } | |
1345 | ||
1346 | if (len >= 8) { | |
1347 | u8 *u = (u8 *) pos; | |
1348 | if (*u == WLAN_EID_CHALLENGE) { | |
1349 | if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) { | |
1350 | txt = "invalid challenge len"; | |
1351 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1352 | goto fail; | |
1353 | } | |
1354 | if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) { | |
1355 | txt = "challenge underflow"; | |
1356 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1357 | goto fail; | |
1358 | } | |
1359 | challenge = (char *) (u + 2); | |
1360 | } | |
1361 | } | |
1362 | ||
1363 | if (sta && sta->ap) { | |
1364 | if (time_after(jiffies, sta->u.ap.last_beacon + | |
1365 | (10 * sta->listen_interval * HZ) / 1024)) { | |
1366 | PDEBUG(DEBUG_AP, "%s: no beacons received for a while," | |
e174961c JB |
1367 | " assuming AP %pM is now STA\n", |
1368 | dev->name, sta->addr); | |
ff1d2767 JM |
1369 | sta->ap = 0; |
1370 | sta->flags = 0; | |
1371 | sta->u.sta.challenge = NULL; | |
1372 | } else { | |
1373 | txt = "AP trying to authenticate?"; | |
1374 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1375 | goto fail; | |
1376 | } | |
1377 | } | |
1378 | ||
1379 | if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) || | |
1380 | (auth_alg == WLAN_AUTH_SHARED_KEY && | |
1381 | (auth_transaction == 1 || | |
1382 | (auth_transaction == 3 && sta != NULL && | |
1383 | sta->u.sta.challenge != NULL)))) { | |
1384 | } else { | |
1385 | txt = "unknown authentication transaction number"; | |
1386 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; | |
1387 | goto fail; | |
1388 | } | |
1389 | ||
1390 | if (sta == NULL) { | |
1391 | txt = "new STA"; | |
1392 | ||
1393 | if (local->ap->num_sta >= MAX_STA_COUNT) { | |
1394 | /* FIX: might try to remove some old STAs first? */ | |
1395 | txt = "no more room for new STAs"; | |
1396 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1397 | goto fail; | |
1398 | } | |
1399 | ||
1400 | sta = ap_add_sta(local->ap, hdr->addr2); | |
1401 | if (sta == NULL) { | |
1402 | txt = "ap_add_sta failed"; | |
1403 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1404 | goto fail; | |
1405 | } | |
1406 | } | |
1407 | ||
1408 | switch (auth_alg) { | |
1409 | case WLAN_AUTH_OPEN: | |
1410 | txt = "authOK"; | |
1411 | /* IEEE 802.11 standard is not completely clear about | |
1412 | * whether STA is considered authenticated after | |
1413 | * authentication OK frame has been send or after it | |
1414 | * has been ACKed. In order to reduce interoperability | |
1415 | * issues, mark the STA authenticated before ACK. */ | |
1416 | sta->flags |= WLAN_STA_AUTH; | |
1417 | break; | |
1418 | ||
1419 | case WLAN_AUTH_SHARED_KEY: | |
1420 | if (auth_transaction == 1) { | |
1421 | if (sta->u.sta.challenge == NULL) { | |
1422 | sta->u.sta.challenge = | |
1423 | ap_auth_make_challenge(local->ap); | |
1424 | if (sta->u.sta.challenge == NULL) { | |
1425 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1426 | goto fail; | |
1427 | } | |
1428 | } | |
1429 | } else { | |
1430 | if (sta->u.sta.challenge == NULL || | |
1431 | challenge == NULL || | |
1432 | memcmp(sta->u.sta.challenge, challenge, | |
1433 | WLAN_AUTH_CHALLENGE_LEN) != 0 || | |
1ea893fd | 1434 | !ieee80211_has_protected(hdr->frame_control)) { |
ff1d2767 JM |
1435 | txt = "challenge response incorrect"; |
1436 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1437 | goto fail; | |
1438 | } | |
1439 | ||
1440 | txt = "challenge OK - authOK"; | |
1441 | /* IEEE 802.11 standard is not completely clear about | |
1442 | * whether STA is considered authenticated after | |
1443 | * authentication OK frame has been send or after it | |
1444 | * has been ACKed. In order to reduce interoperability | |
1445 | * issues, mark the STA authenticated before ACK. */ | |
1446 | sta->flags |= WLAN_STA_AUTH; | |
1447 | kfree(sta->u.sta.challenge); | |
1448 | sta->u.sta.challenge = NULL; | |
1449 | } | |
1450 | break; | |
1451 | } | |
1452 | ||
1453 | fail: | |
8a9faf3c | 1454 | pos = (__le16 *) body; |
ff1d2767 JM |
1455 | *pos = cpu_to_le16(auth_alg); |
1456 | pos++; | |
1457 | *pos = cpu_to_le16(auth_transaction + 1); | |
1458 | pos++; | |
1459 | *pos = cpu_to_le16(resp); /* status_code */ | |
1460 | pos++; | |
1461 | olen = 6; | |
1462 | ||
1463 | if (resp == WLAN_STATUS_SUCCESS && sta != NULL && | |
1464 | sta->u.sta.challenge != NULL && | |
1465 | auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) { | |
1466 | u8 *tmp = (u8 *) pos; | |
1467 | *tmp++ = WLAN_EID_CHALLENGE; | |
1468 | *tmp++ = WLAN_AUTH_CHALLENGE_LEN; | |
1469 | pos++; | |
1470 | memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN); | |
1471 | olen += 2 + WLAN_AUTH_CHALLENGE_LEN; | |
1472 | } | |
1473 | ||
4339d328 | 1474 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH, |
ff1d2767 JM |
1475 | body, olen, hdr->addr2, ap->tx_callback_auth); |
1476 | ||
1477 | if (sta) { | |
1478 | sta->last_rx = jiffies; | |
1479 | atomic_dec(&sta->users); | |
1480 | } | |
1481 | ||
1482 | if (resp) { | |
e174961c | 1483 | PDEBUG(DEBUG_AP, "%s: %pM auth (alg=%d " |
0795af57 | 1484 | "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n", |
e174961c | 1485 | dev->name, hdr->addr2, |
21f644f3 | 1486 | auth_alg, auth_transaction, status_code, len, |
1ea893fd | 1487 | le16_to_cpu(hdr->frame_control), resp, txt); |
ff1d2767 JM |
1488 | } |
1489 | } | |
1490 | ||
1491 | ||
1492 | /* Called only as a scheduled task for pending AP frames. */ | |
1493 | static void handle_assoc(local_info_t *local, struct sk_buff *skb, | |
1494 | struct hostap_80211_rx_status *rx_stats, int reassoc) | |
1495 | { | |
1496 | struct net_device *dev = local->dev; | |
1ea893fd | 1497 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1498 | char body[12], *p, *lpos; |
1499 | int len, left; | |
8a9faf3c | 1500 | __le16 *pos; |
ff1d2767 JM |
1501 | u16 resp = WLAN_STATUS_SUCCESS; |
1502 | struct sta_info *sta = NULL; | |
1503 | int send_deauth = 0; | |
1504 | char *txt = ""; | |
1505 | u8 prev_ap[ETH_ALEN]; | |
1506 | ||
1507 | left = len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1508 | ||
1509 | if (len < (reassoc ? 10 : 4)) { | |
1510 | PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload " | |
e174961c JB |
1511 | "(len=%d, reassoc=%d) from %pM\n", |
1512 | dev->name, len, reassoc, hdr->addr2); | |
ff1d2767 JM |
1513 | return; |
1514 | } | |
1515 | ||
1516 | spin_lock_bh(&local->ap->sta_table_lock); | |
1517 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1518 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
1519 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1520 | txt = "trying to associate before authentication"; | |
1521 | send_deauth = 1; | |
1522 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1523 | sta = NULL; /* do not decrement sta->users */ | |
1524 | goto fail; | |
1525 | } | |
1526 | atomic_inc(&sta->users); | |
1527 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1528 | ||
8a9faf3c | 1529 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
1530 | sta->capability = __le16_to_cpu(*pos); |
1531 | pos++; left -= 2; | |
1532 | sta->listen_interval = __le16_to_cpu(*pos); | |
1533 | pos++; left -= 2; | |
1534 | ||
1535 | if (reassoc) { | |
1536 | memcpy(prev_ap, pos, ETH_ALEN); | |
1537 | pos++; pos++; pos++; left -= 6; | |
1538 | } else | |
1539 | memset(prev_ap, 0, ETH_ALEN); | |
1540 | ||
1541 | if (left >= 2) { | |
1542 | unsigned int ileft; | |
1543 | unsigned char *u = (unsigned char *) pos; | |
1544 | ||
1545 | if (*u == WLAN_EID_SSID) { | |
1546 | u++; left--; | |
1547 | ileft = *u; | |
1548 | u++; left--; | |
1549 | ||
1550 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
1551 | txt = "SSID overflow"; | |
1552 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1553 | goto fail; | |
1554 | } | |
1555 | ||
1556 | if (ileft != strlen(local->essid) || | |
1557 | memcmp(local->essid, u, ileft) != 0) { | |
1558 | txt = "not our SSID"; | |
1559 | resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC; | |
1560 | goto fail; | |
1561 | } | |
1562 | ||
1563 | u += ileft; | |
1564 | left -= ileft; | |
1565 | } | |
1566 | ||
1567 | if (left >= 2 && *u == WLAN_EID_SUPP_RATES) { | |
1568 | u++; left--; | |
1569 | ileft = *u; | |
1570 | u++; left--; | |
74fae82c | 1571 | |
ff1d2767 JM |
1572 | if (ileft > left || ileft == 0 || |
1573 | ileft > WLAN_SUPP_RATES_MAX) { | |
1574 | txt = "SUPP_RATES len error"; | |
1575 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1576 | goto fail; | |
1577 | } | |
1578 | ||
1579 | memset(sta->supported_rates, 0, | |
1580 | sizeof(sta->supported_rates)); | |
1581 | memcpy(sta->supported_rates, u, ileft); | |
1582 | prism2_check_tx_rates(sta); | |
1583 | ||
1584 | u += ileft; | |
1585 | left -= ileft; | |
1586 | } | |
1587 | ||
1588 | if (left > 0) { | |
e174961c | 1589 | PDEBUG(DEBUG_AP, "%s: assoc from %pM" |
0795af57 | 1590 | " with extra data (%d bytes) [", |
e174961c | 1591 | dev->name, hdr->addr2, left); |
ff1d2767 JM |
1592 | while (left > 0) { |
1593 | PDEBUG2(DEBUG_AP, "<%02x>", *u); | |
1594 | u++; left--; | |
1595 | } | |
1596 | PDEBUG2(DEBUG_AP, "]\n"); | |
1597 | } | |
1598 | } else { | |
1599 | txt = "frame underflow"; | |
1600 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1601 | goto fail; | |
1602 | } | |
1603 | ||
1604 | /* get a unique AID */ | |
1605 | if (sta->aid > 0) | |
1606 | txt = "OK, old AID"; | |
1607 | else { | |
1608 | spin_lock_bh(&local->ap->sta_table_lock); | |
1609 | for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++) | |
1610 | if (local->ap->sta_aid[sta->aid - 1] == NULL) | |
1611 | break; | |
1612 | if (sta->aid > MAX_AID_TABLE_SIZE) { | |
1613 | sta->aid = 0; | |
1614 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1615 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1616 | txt = "no room for more AIDs"; | |
1617 | } else { | |
1618 | local->ap->sta_aid[sta->aid - 1] = sta; | |
1619 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1620 | txt = "OK, new AID"; | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | fail: | |
8a9faf3c | 1625 | pos = (__le16 *) body; |
ff1d2767 JM |
1626 | |
1627 | if (send_deauth) { | |
8a9faf3c | 1628 | *pos = cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH); |
ff1d2767 JM |
1629 | pos++; |
1630 | } else { | |
1631 | /* FIX: CF-Pollable and CF-PollReq should be set to match the | |
1632 | * values in beacons/probe responses */ | |
1633 | /* FIX: how about privacy and WEP? */ | |
1634 | /* capability */ | |
8a9faf3c | 1635 | *pos = cpu_to_le16(WLAN_CAPABILITY_ESS); |
ff1d2767 JM |
1636 | pos++; |
1637 | ||
1638 | /* status_code */ | |
8a9faf3c | 1639 | *pos = cpu_to_le16(resp); |
ff1d2767 JM |
1640 | pos++; |
1641 | ||
8a9faf3c | 1642 | *pos = cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) | |
ff1d2767 JM |
1643 | BIT(14) | BIT(15)); /* AID */ |
1644 | pos++; | |
1645 | ||
1646 | /* Supported rates (Information element) */ | |
1647 | p = (char *) pos; | |
1648 | *p++ = WLAN_EID_SUPP_RATES; | |
1649 | lpos = p; | |
1650 | *p++ = 0; /* len */ | |
1651 | if (local->tx_rate_control & WLAN_RATE_1M) { | |
1652 | *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02; | |
1653 | (*lpos)++; | |
1654 | } | |
1655 | if (local->tx_rate_control & WLAN_RATE_2M) { | |
1656 | *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04; | |
1657 | (*lpos)++; | |
1658 | } | |
1659 | if (local->tx_rate_control & WLAN_RATE_5M5) { | |
1660 | *p++ = local->basic_rates & WLAN_RATE_5M5 ? | |
1661 | 0x8b : 0x0b; | |
1662 | (*lpos)++; | |
1663 | } | |
1664 | if (local->tx_rate_control & WLAN_RATE_11M) { | |
1665 | *p++ = local->basic_rates & WLAN_RATE_11M ? | |
1666 | 0x96 : 0x16; | |
1667 | (*lpos)++; | |
1668 | } | |
8a9faf3c | 1669 | pos = (__le16 *) p; |
ff1d2767 JM |
1670 | } |
1671 | ||
4339d328 JM |
1672 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
1673 | (send_deauth ? IEEE80211_STYPE_DEAUTH : | |
1674 | (reassoc ? IEEE80211_STYPE_REASSOC_RESP : | |
1675 | IEEE80211_STYPE_ASSOC_RESP)), | |
ff1d2767 JM |
1676 | body, (u8 *) pos - (u8 *) body, |
1677 | hdr->addr2, | |
1678 | send_deauth ? 0 : local->ap->tx_callback_assoc); | |
1679 | ||
1680 | if (sta) { | |
1681 | if (resp == WLAN_STATUS_SUCCESS) { | |
1682 | sta->last_rx = jiffies; | |
1683 | /* STA will be marked associated from TX callback, if | |
1684 | * AssocResp is ACKed */ | |
1685 | } | |
1686 | atomic_dec(&sta->users); | |
1687 | } | |
1688 | ||
1689 | #if 0 | |
e174961c JB |
1690 | PDEBUG(DEBUG_AP, "%s: %pM %sassoc (len=%d " |
1691 | "prev_ap=%pM) => %d(%d) (%s)\n", | |
21f644f3 | 1692 | dev->name, |
e174961c | 1693 | hdr->addr2, |
21f644f3 | 1694 | reassoc ? "re" : "", len, |
e174961c | 1695 | prev_ap, |
21f644f3 | 1696 | resp, send_deauth, txt); |
ff1d2767 JM |
1697 | #endif |
1698 | } | |
1699 | ||
1700 | ||
1701 | /* Called only as a scheduled task for pending AP frames. */ | |
1702 | static void handle_deauth(local_info_t *local, struct sk_buff *skb, | |
1703 | struct hostap_80211_rx_status *rx_stats) | |
1704 | { | |
1705 | struct net_device *dev = local->dev; | |
1ea893fd | 1706 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1707 | char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
1708 | int len; | |
8a9faf3c AV |
1709 | u16 reason_code; |
1710 | __le16 *pos; | |
ff1d2767 JM |
1711 | struct sta_info *sta = NULL; |
1712 | ||
1713 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1714 | ||
1715 | if (len < 2) { | |
1716 | printk("handle_deauth - too short payload (len=%d)\n", len); | |
1717 | return; | |
1718 | } | |
1719 | ||
8a9faf3c AV |
1720 | pos = (__le16 *) body; |
1721 | reason_code = le16_to_cpu(*pos); | |
ff1d2767 | 1722 | |
e174961c JB |
1723 | PDEBUG(DEBUG_AP, "%s: deauthentication: %pM len=%d, " |
1724 | "reason_code=%d\n", dev->name, hdr->addr2, | |
21f644f3 | 1725 | len, reason_code); |
ff1d2767 JM |
1726 | |
1727 | spin_lock_bh(&local->ap->sta_table_lock); | |
1728 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1729 | if (sta != NULL) { | |
1730 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1731 | hostap_event_expired_sta(local->dev, sta); | |
1732 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
1733 | } | |
1734 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1735 | if (sta == NULL) { | |
e174961c | 1736 | printk("%s: deauthentication from %pM, " |
ff1d2767 | 1737 | "reason_code=%d, but STA not authenticated\n", dev->name, |
e174961c | 1738 | hdr->addr2, reason_code); |
ff1d2767 JM |
1739 | } |
1740 | } | |
1741 | ||
1742 | ||
1743 | /* Called only as a scheduled task for pending AP frames. */ | |
1744 | static void handle_disassoc(local_info_t *local, struct sk_buff *skb, | |
1745 | struct hostap_80211_rx_status *rx_stats) | |
1746 | { | |
1747 | struct net_device *dev = local->dev; | |
1ea893fd | 1748 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1749 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1750 | int len; | |
8a9faf3c AV |
1751 | u16 reason_code; |
1752 | __le16 *pos; | |
ff1d2767 JM |
1753 | struct sta_info *sta = NULL; |
1754 | ||
1755 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1756 | ||
1757 | if (len < 2) { | |
1758 | printk("handle_disassoc - too short payload (len=%d)\n", len); | |
1759 | return; | |
1760 | } | |
1761 | ||
8a9faf3c AV |
1762 | pos = (__le16 *) body; |
1763 | reason_code = le16_to_cpu(*pos); | |
ff1d2767 | 1764 | |
e174961c JB |
1765 | PDEBUG(DEBUG_AP, "%s: disassociation: %pM len=%d, " |
1766 | "reason_code=%d\n", dev->name, hdr->addr2, | |
21f644f3 | 1767 | len, reason_code); |
ff1d2767 JM |
1768 | |
1769 | spin_lock_bh(&local->ap->sta_table_lock); | |
1770 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1771 | if (sta != NULL) { | |
1772 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1773 | hostap_event_expired_sta(local->dev, sta); | |
1774 | sta->flags &= ~WLAN_STA_ASSOC; | |
1775 | } | |
1776 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1777 | if (sta == NULL) { | |
e174961c | 1778 | printk("%s: disassociation from %pM, " |
ff1d2767 | 1779 | "reason_code=%d, but STA not authenticated\n", |
e174961c | 1780 | dev->name, hdr->addr2, reason_code); |
ff1d2767 JM |
1781 | } |
1782 | } | |
1783 | ||
1784 | ||
1785 | /* Called only as a scheduled task for pending AP frames. */ | |
1786 | static void ap_handle_data_nullfunc(local_info_t *local, | |
1ea893fd | 1787 | struct ieee80211_hdr *hdr) |
ff1d2767 JM |
1788 | { |
1789 | struct net_device *dev = local->dev; | |
1790 | ||
1791 | /* some STA f/w's seem to require control::ACK frame for | |
1792 | * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does | |
1793 | * not send this.. | |
1794 | * send control::ACK for the data::nullfunc */ | |
1795 | ||
1796 | printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n"); | |
4339d328 | 1797 | prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK, |
ff1d2767 JM |
1798 | NULL, 0, hdr->addr2, 0); |
1799 | } | |
1800 | ||
1801 | ||
1802 | /* Called only as a scheduled task for pending AP frames. */ | |
1803 | static void ap_handle_dropped_data(local_info_t *local, | |
1ea893fd | 1804 | struct ieee80211_hdr *hdr) |
ff1d2767 JM |
1805 | { |
1806 | struct net_device *dev = local->dev; | |
1807 | struct sta_info *sta; | |
8a9faf3c | 1808 | __le16 reason; |
ff1d2767 JM |
1809 | |
1810 | spin_lock_bh(&local->ap->sta_table_lock); | |
1811 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1812 | if (sta) | |
1813 | atomic_inc(&sta->users); | |
1814 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1815 | ||
1816 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) { | |
1817 | PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n"); | |
1818 | atomic_dec(&sta->users); | |
1819 | return; | |
1820 | } | |
1821 | ||
8a9faf3c | 1822 | reason = cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); |
4339d328 | 1823 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
ff1d2767 | 1824 | ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ? |
4339d328 | 1825 | IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC), |
ff1d2767 JM |
1826 | (char *) &reason, sizeof(reason), hdr->addr2, 0); |
1827 | ||
1828 | if (sta) | |
1829 | atomic_dec(&sta->users); | |
1830 | } | |
1831 | ||
1832 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1833 | ||
1834 | ||
1835 | /* Called only as a scheduled task for pending AP frames. */ | |
1836 | static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta, | |
1837 | struct sk_buff *skb) | |
1838 | { | |
5bee720f JM |
1839 | struct hostap_skb_tx_data *meta; |
1840 | ||
ff1d2767 JM |
1841 | if (!(sta->flags & WLAN_STA_PS)) { |
1842 | /* Station has moved to non-PS mode, so send all buffered | |
1843 | * frames using normal device queue. */ | |
1844 | dev_queue_xmit(skb); | |
1845 | return; | |
1846 | } | |
1847 | ||
1848 | /* add a flag for hostap_handle_sta_tx() to know that this skb should | |
1849 | * be passed through even though STA is using PS */ | |
5bee720f JM |
1850 | meta = (struct hostap_skb_tx_data *) skb->cb; |
1851 | meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME; | |
ff1d2767 JM |
1852 | if (!skb_queue_empty(&sta->tx_buf)) { |
1853 | /* indicate to STA that more frames follow */ | |
5bee720f | 1854 | meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA; |
ff1d2767 JM |
1855 | } |
1856 | dev_queue_xmit(skb); | |
1857 | } | |
1858 | ||
1859 | ||
1860 | /* Called only as a scheduled task for pending AP frames. */ | |
1861 | static void handle_pspoll(local_info_t *local, | |
1ea893fd | 1862 | struct ieee80211_hdr *hdr, |
ff1d2767 JM |
1863 | struct hostap_80211_rx_status *rx_stats) |
1864 | { | |
1865 | struct net_device *dev = local->dev; | |
1866 | struct sta_info *sta; | |
1867 | u16 aid; | |
1868 | struct sk_buff *skb; | |
1869 | ||
e174961c | 1870 | PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n", |
1ea893fd | 1871 | hdr->addr1, hdr->addr2, !!ieee80211_has_pm(hdr->frame_control)); |
ff1d2767 JM |
1872 | |
1873 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
e174961c JB |
1874 | PDEBUG(DEBUG_AP, |
1875 | "handle_pspoll - addr1(BSSID)=%pM not own MAC\n", | |
1876 | hdr->addr1); | |
ff1d2767 JM |
1877 | return; |
1878 | } | |
1879 | ||
8a9faf3c | 1880 | aid = le16_to_cpu(hdr->duration_id); |
ff1d2767 JM |
1881 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) { |
1882 | PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n"); | |
1883 | return; | |
1884 | } | |
1bcca3c4 | 1885 | aid &= ~(BIT(15) | BIT(14)); |
ff1d2767 JM |
1886 | if (aid == 0 || aid > MAX_AID_TABLE_SIZE) { |
1887 | PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid); | |
1888 | return; | |
1889 | } | |
1890 | PDEBUG(DEBUG_PS2, " aid=%d\n", aid); | |
1891 | ||
1892 | spin_lock_bh(&local->ap->sta_table_lock); | |
1893 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1894 | if (sta) | |
1895 | atomic_inc(&sta->users); | |
1896 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1897 | ||
1898 | if (sta == NULL) { | |
1899 | PDEBUG(DEBUG_PS, " STA not found\n"); | |
1900 | return; | |
1901 | } | |
1902 | if (sta->aid != aid) { | |
1903 | PDEBUG(DEBUG_PS, " received aid=%i does not match with " | |
1904 | "assoc.aid=%d\n", aid, sta->aid); | |
1905 | return; | |
1906 | } | |
1907 | ||
1908 | /* FIX: todo: | |
1909 | * - add timeout for buffering (clear aid in TIM vector if buffer timed | |
1910 | * out (expiry time must be longer than ListenInterval for | |
1911 | * the corresponding STA; "8802-11: 11.2.1.9 AP aging function" | |
1912 | * - what to do, if buffered, pspolled, and sent frame is not ACKed by | |
1913 | * sta; store buffer for later use and leave TIM aid bit set? use | |
1914 | * TX event to check whether frame was ACKed? | |
1915 | */ | |
1916 | ||
1917 | while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) { | |
1918 | /* send buffered frame .. */ | |
1919 | PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL" | |
1920 | " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf)); | |
1921 | ||
1922 | pspoll_send_buffered(local, sta, skb); | |
1923 | ||
1924 | if (sta->flags & WLAN_STA_PS) { | |
1925 | /* send only one buffered packet per PS Poll */ | |
1926 | /* FIX: should ignore further PS Polls until the | |
1927 | * buffered packet that was just sent is acknowledged | |
1928 | * (Tx or TxExc event) */ | |
1929 | break; | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | if (skb_queue_empty(&sta->tx_buf)) { | |
1934 | /* try to clear aid from TIM */ | |
1935 | if (!(sta->flags & WLAN_STA_TIM)) | |
1936 | PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n", | |
1937 | aid); | |
1938 | hostap_set_tim(local, aid, 0); | |
1939 | sta->flags &= ~WLAN_STA_TIM; | |
1940 | } | |
1941 | ||
1942 | atomic_dec(&sta->users); | |
1943 | } | |
1944 | ||
1945 | ||
1946 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1947 | ||
c4028958 | 1948 | static void handle_wds_oper_queue(struct work_struct *work) |
ff1d2767 | 1949 | { |
c4028958 DH |
1950 | struct ap_data *ap = container_of(work, struct ap_data, |
1951 | wds_oper_queue); | |
1952 | local_info_t *local = ap->local; | |
ff1d2767 JM |
1953 | struct wds_oper_data *entry, *prev; |
1954 | ||
1955 | spin_lock_bh(&local->lock); | |
1956 | entry = local->ap->wds_oper_entries; | |
1957 | local->ap->wds_oper_entries = NULL; | |
1958 | spin_unlock_bh(&local->lock); | |
1959 | ||
1960 | while (entry) { | |
1961 | PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection " | |
e174961c | 1962 | "to AP %pM\n", |
ff1d2767 JM |
1963 | local->dev->name, |
1964 | entry->type == WDS_ADD ? "adding" : "removing", | |
e174961c | 1965 | entry->addr); |
ff1d2767 JM |
1966 | if (entry->type == WDS_ADD) |
1967 | prism2_wds_add(local, entry->addr, 0); | |
1968 | else if (entry->type == WDS_DEL) | |
1969 | prism2_wds_del(local, entry->addr, 0, 1); | |
1970 | ||
1971 | prev = entry; | |
1972 | entry = entry->next; | |
1973 | kfree(prev); | |
1974 | } | |
1975 | } | |
1976 | ||
1977 | ||
1978 | /* Called only as a scheduled task for pending AP frames. */ | |
1979 | static void handle_beacon(local_info_t *local, struct sk_buff *skb, | |
1980 | struct hostap_80211_rx_status *rx_stats) | |
1981 | { | |
1ea893fd | 1982 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1983 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1984 | int len, left; | |
8a9faf3c AV |
1985 | u16 beacon_int, capability; |
1986 | __le16 *pos; | |
ff1d2767 JM |
1987 | char *ssid = NULL; |
1988 | unsigned char *supp_rates = NULL; | |
1989 | int ssid_len = 0, supp_rates_len = 0; | |
1990 | struct sta_info *sta = NULL; | |
1991 | int new_sta = 0, channel = -1; | |
1992 | ||
1993 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1994 | ||
1995 | if (len < 8 + 2 + 2) { | |
1996 | printk(KERN_DEBUG "handle_beacon - too short payload " | |
1997 | "(len=%d)\n", len); | |
1998 | return; | |
1999 | } | |
2000 | ||
8a9faf3c | 2001 | pos = (__le16 *) body; |
ff1d2767 JM |
2002 | left = len; |
2003 | ||
2004 | /* Timestamp (8 octets) */ | |
2005 | pos += 4; left -= 8; | |
2006 | /* Beacon interval (2 octets) */ | |
8a9faf3c | 2007 | beacon_int = le16_to_cpu(*pos); |
ff1d2767 JM |
2008 | pos++; left -= 2; |
2009 | /* Capability information (2 octets) */ | |
8a9faf3c | 2010 | capability = le16_to_cpu(*pos); |
ff1d2767 JM |
2011 | pos++; left -= 2; |
2012 | ||
2013 | if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS && | |
2014 | capability & WLAN_CAPABILITY_IBSS) | |
2015 | return; | |
2016 | ||
2017 | if (left >= 2) { | |
2018 | unsigned int ileft; | |
2019 | unsigned char *u = (unsigned char *) pos; | |
2020 | ||
2021 | if (*u == WLAN_EID_SSID) { | |
2022 | u++; left--; | |
2023 | ileft = *u; | |
2024 | u++; left--; | |
2025 | ||
2026 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
2027 | PDEBUG(DEBUG_AP, "SSID: overflow\n"); | |
2028 | return; | |
2029 | } | |
2030 | ||
2031 | if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID && | |
2032 | (ileft != strlen(local->essid) || | |
2033 | memcmp(local->essid, u, ileft) != 0)) { | |
2034 | /* not our SSID */ | |
2035 | return; | |
2036 | } | |
2037 | ||
2038 | ssid = u; | |
2039 | ssid_len = ileft; | |
2040 | ||
2041 | u += ileft; | |
2042 | left -= ileft; | |
2043 | } | |
2044 | ||
2045 | if (*u == WLAN_EID_SUPP_RATES) { | |
2046 | u++; left--; | |
2047 | ileft = *u; | |
2048 | u++; left--; | |
74fae82c | 2049 | |
ff1d2767 JM |
2050 | if (ileft > left || ileft == 0 || ileft > 8) { |
2051 | PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n"); | |
2052 | return; | |
2053 | } | |
2054 | ||
2055 | supp_rates = u; | |
2056 | supp_rates_len = ileft; | |
2057 | ||
2058 | u += ileft; | |
2059 | left -= ileft; | |
2060 | } | |
2061 | ||
2062 | if (*u == WLAN_EID_DS_PARAMS) { | |
2063 | u++; left--; | |
2064 | ileft = *u; | |
2065 | u++; left--; | |
74fae82c | 2066 | |
ff1d2767 JM |
2067 | if (ileft > left || ileft != 1) { |
2068 | PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n"); | |
2069 | return; | |
2070 | } | |
2071 | ||
2072 | channel = *u; | |
2073 | ||
2074 | u += ileft; | |
2075 | left -= ileft; | |
2076 | } | |
2077 | } | |
2078 | ||
2079 | spin_lock_bh(&local->ap->sta_table_lock); | |
2080 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2081 | if (sta != NULL) | |
2082 | atomic_inc(&sta->users); | |
2083 | spin_unlock_bh(&local->ap->sta_table_lock); | |
2084 | ||
2085 | if (sta == NULL) { | |
2086 | /* add new AP */ | |
2087 | new_sta = 1; | |
2088 | sta = ap_add_sta(local->ap, hdr->addr2); | |
2089 | if (sta == NULL) { | |
2090 | printk(KERN_INFO "prism2: kmalloc failed for AP " | |
2091 | "data structure\n"); | |
2092 | return; | |
2093 | } | |
2094 | hostap_event_new_sta(local->dev, sta); | |
2095 | ||
2096 | /* mark APs authentication and associated for pseudo ad-hoc | |
2097 | * style communication */ | |
2098 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2099 | ||
2100 | if (local->ap->autom_ap_wds) { | |
2101 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
2102 | } | |
2103 | } | |
2104 | ||
2105 | sta->ap = 1; | |
2106 | if (ssid) { | |
2107 | sta->u.ap.ssid_len = ssid_len; | |
2108 | memcpy(sta->u.ap.ssid, ssid, ssid_len); | |
2109 | sta->u.ap.ssid[ssid_len] = '\0'; | |
2110 | } else { | |
2111 | sta->u.ap.ssid_len = 0; | |
2112 | sta->u.ap.ssid[0] = '\0'; | |
2113 | } | |
2114 | sta->u.ap.channel = channel; | |
2115 | sta->rx_packets++; | |
2116 | sta->rx_bytes += len; | |
2117 | sta->u.ap.last_beacon = sta->last_rx = jiffies; | |
2118 | sta->capability = capability; | |
2119 | sta->listen_interval = beacon_int; | |
2120 | ||
2121 | atomic_dec(&sta->users); | |
2122 | ||
2123 | if (new_sta) { | |
2124 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
2125 | memcpy(sta->supported_rates, supp_rates, supp_rates_len); | |
2126 | prism2_check_tx_rates(sta); | |
2127 | } | |
2128 | } | |
2129 | ||
2130 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2131 | ||
2132 | ||
2133 | /* Called only as a tasklet. */ | |
2134 | static void handle_ap_item(local_info_t *local, struct sk_buff *skb, | |
2135 | struct hostap_80211_rx_status *rx_stats) | |
2136 | { | |
2137 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2138 | struct net_device *dev = local->dev; | |
2139 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2140 | u16 fc, type, stype; | |
1ea893fd | 2141 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2142 | |
2143 | /* FIX: should give skb->len to handler functions and check that the | |
2144 | * buffer is long enough */ | |
1ea893fd DW |
2145 | hdr = (struct ieee80211_hdr *) skb->data; |
2146 | fc = le16_to_cpu(hdr->frame_control); | |
2147 | type = fc & IEEE80211_FCTL_FTYPE; | |
2148 | stype = fc & IEEE80211_FCTL_STYPE; | |
ff1d2767 JM |
2149 | |
2150 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2151 | if (!local->hostapd && type == IEEE80211_FTYPE_DATA) { |
ff1d2767 JM |
2152 | PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n"); |
2153 | ||
b2f4a2e3 JM |
2154 | if (!(fc & IEEE80211_FCTL_TODS) || |
2155 | (fc & IEEE80211_FCTL_FROMDS)) { | |
4339d328 | 2156 | if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
2157 | /* no ToDS nullfunc seems to be used to check |
2158 | * AP association; so send reject message to | |
2159 | * speed up re-association */ | |
2160 | ap_handle_dropped_data(local, hdr); | |
2161 | goto done; | |
2162 | } | |
2163 | PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n", | |
2164 | fc); | |
2165 | goto done; | |
2166 | } | |
2167 | ||
2168 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
e174961c JB |
2169 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=%pM" |
2170 | " not own MAC\n", hdr->addr1); | |
ff1d2767 JM |
2171 | goto done; |
2172 | } | |
2173 | ||
4339d328 JM |
2174 | if (local->ap->nullfunc_ack && |
2175 | stype == IEEE80211_STYPE_NULLFUNC) | |
ff1d2767 JM |
2176 | ap_handle_data_nullfunc(local, hdr); |
2177 | else | |
2178 | ap_handle_dropped_data(local, hdr); | |
2179 | goto done; | |
2180 | } | |
2181 | ||
4339d328 | 2182 | if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) { |
ff1d2767 JM |
2183 | handle_beacon(local, skb, rx_stats); |
2184 | goto done; | |
2185 | } | |
2186 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2187 | ||
4339d328 | 2188 | if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) { |
ff1d2767 JM |
2189 | handle_pspoll(local, hdr, rx_stats); |
2190 | goto done; | |
2191 | } | |
2192 | ||
2193 | if (local->hostapd) { | |
2194 | PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x " | |
2195 | "subtype=0x%02x\n", type, stype); | |
2196 | goto done; | |
2197 | } | |
2198 | ||
2199 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2200 | if (type != IEEE80211_FTYPE_MGMT) { |
ff1d2767 JM |
2201 | PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n"); |
2202 | goto done; | |
2203 | } | |
2204 | ||
2205 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
e174961c JB |
2206 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM" |
2207 | " not own MAC\n", hdr->addr1); | |
ff1d2767 JM |
2208 | goto done; |
2209 | } | |
2210 | ||
2211 | if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) { | |
e174961c JB |
2212 | PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%pM" |
2213 | " not own MAC\n", hdr->addr3); | |
ff1d2767 JM |
2214 | goto done; |
2215 | } | |
2216 | ||
2217 | switch (stype) { | |
4339d328 | 2218 | case IEEE80211_STYPE_ASSOC_REQ: |
ff1d2767 JM |
2219 | handle_assoc(local, skb, rx_stats, 0); |
2220 | break; | |
4339d328 | 2221 | case IEEE80211_STYPE_ASSOC_RESP: |
ff1d2767 JM |
2222 | PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n"); |
2223 | break; | |
4339d328 | 2224 | case IEEE80211_STYPE_REASSOC_REQ: |
ff1d2767 JM |
2225 | handle_assoc(local, skb, rx_stats, 1); |
2226 | break; | |
4339d328 | 2227 | case IEEE80211_STYPE_REASSOC_RESP: |
ff1d2767 JM |
2228 | PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n"); |
2229 | break; | |
4339d328 | 2230 | case IEEE80211_STYPE_ATIM: |
ff1d2767 JM |
2231 | PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n"); |
2232 | break; | |
4339d328 | 2233 | case IEEE80211_STYPE_DISASSOC: |
ff1d2767 JM |
2234 | handle_disassoc(local, skb, rx_stats); |
2235 | break; | |
4339d328 | 2236 | case IEEE80211_STYPE_AUTH: |
ff1d2767 JM |
2237 | handle_authen(local, skb, rx_stats); |
2238 | break; | |
4339d328 | 2239 | case IEEE80211_STYPE_DEAUTH: |
ff1d2767 JM |
2240 | handle_deauth(local, skb, rx_stats); |
2241 | break; | |
2242 | default: | |
4339d328 JM |
2243 | PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n", |
2244 | stype >> 4); | |
ff1d2767 JM |
2245 | break; |
2246 | } | |
2247 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2248 | ||
2249 | done: | |
2250 | dev_kfree_skb(skb); | |
2251 | } | |
2252 | ||
2253 | ||
2254 | /* Called only as a tasklet (software IRQ) */ | |
2255 | void hostap_rx(struct net_device *dev, struct sk_buff *skb, | |
2256 | struct hostap_80211_rx_status *rx_stats) | |
2257 | { | |
2258 | struct hostap_interface *iface; | |
2259 | local_info_t *local; | |
1ea893fd | 2260 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2261 | |
2262 | iface = netdev_priv(dev); | |
2263 | local = iface->local; | |
2264 | ||
2265 | if (skb->len < 16) | |
2266 | goto drop; | |
2267 | ||
4cfa8e45 | 2268 | dev->stats.rx_packets++; |
ff1d2767 | 2269 | |
1ea893fd | 2270 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2271 | |
2272 | if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL && | |
1ea893fd | 2273 | ieee80211_is_beacon(hdr->frame_control)) |
ff1d2767 JM |
2274 | goto drop; |
2275 | ||
c1b4aa3f | 2276 | skb->protocol = cpu_to_be16(ETH_P_HOSTAP); |
ff1d2767 JM |
2277 | handle_ap_item(local, skb, rx_stats); |
2278 | return; | |
2279 | ||
2280 | drop: | |
2281 | dev_kfree_skb(skb); | |
2282 | } | |
2283 | ||
2284 | ||
2285 | /* Called only as a tasklet (software IRQ) */ | |
2286 | static void schedule_packet_send(local_info_t *local, struct sta_info *sta) | |
2287 | { | |
2288 | struct sk_buff *skb; | |
1ea893fd | 2289 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2290 | struct hostap_80211_rx_status rx_stats; |
2291 | ||
2292 | if (skb_queue_empty(&sta->tx_buf)) | |
2293 | return; | |
2294 | ||
2295 | skb = dev_alloc_skb(16); | |
2296 | if (skb == NULL) { | |
2297 | printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc " | |
2298 | "failed\n", local->dev->name); | |
2299 | return; | |
2300 | } | |
2301 | ||
1ea893fd | 2302 | hdr = (struct ieee80211_hdr *) skb_put(skb, 16); |
ff1d2767 JM |
2303 | |
2304 | /* Generate a fake pspoll frame to start packet delivery */ | |
1ea893fd | 2305 | hdr->frame_control = cpu_to_le16( |
4339d328 | 2306 | IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); |
ff1d2767 JM |
2307 | memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN); |
2308 | memcpy(hdr->addr2, sta->addr, ETH_ALEN); | |
2309 | hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14)); | |
2310 | ||
e174961c JB |
2311 | PDEBUG(DEBUG_PS2, |
2312 | "%s: Scheduling buffered packet delivery for STA %pM\n", | |
2313 | local->dev->name, sta->addr); | |
ff1d2767 JM |
2314 | |
2315 | skb->dev = local->dev; | |
2316 | ||
2317 | memset(&rx_stats, 0, sizeof(rx_stats)); | |
2318 | hostap_rx(local->dev, skb, &rx_stats); | |
2319 | } | |
2320 | ||
2321 | ||
5fad5a2e AB |
2322 | int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[], |
2323 | struct iw_quality qual[], int buf_size, | |
2324 | int aplist) | |
ff1d2767 JM |
2325 | { |
2326 | struct ap_data *ap = local->ap; | |
2327 | struct list_head *ptr; | |
2328 | int count = 0; | |
2329 | ||
2330 | spin_lock_bh(&ap->sta_table_lock); | |
2331 | ||
2332 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2333 | ptr = ptr->next) { | |
2334 | struct sta_info *sta = (struct sta_info *) ptr; | |
2335 | ||
2336 | if (aplist && !sta->ap) | |
2337 | continue; | |
2338 | addr[count].sa_family = ARPHRD_ETHER; | |
2339 | memcpy(addr[count].sa_data, sta->addr, ETH_ALEN); | |
2340 | if (sta->last_rx_silence == 0) | |
2341 | qual[count].qual = sta->last_rx_signal < 27 ? | |
2342 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2343 | else | |
2344 | qual[count].qual = sta->last_rx_signal - | |
2345 | sta->last_rx_silence - 35; | |
2346 | qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2347 | qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2348 | qual[count].updated = sta->last_rx_updated; | |
2349 | ||
c28df16e | 2350 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2351 | |
2352 | count++; | |
2353 | if (count >= buf_size) | |
2354 | break; | |
2355 | } | |
2356 | spin_unlock_bh(&ap->sta_table_lock); | |
2357 | ||
2358 | return count; | |
2359 | } | |
2360 | ||
2361 | ||
25985edc | 2362 | /* Translate our list of Access Points & Stations to a card independent |
ff1d2767 | 2363 | * format that the Wireless Tools will understand - Jean II */ |
ccc58057 DM |
2364 | int prism2_ap_translate_scan(struct net_device *dev, |
2365 | struct iw_request_info *info, char *buffer) | |
ff1d2767 JM |
2366 | { |
2367 | struct hostap_interface *iface; | |
2368 | local_info_t *local; | |
2369 | struct ap_data *ap; | |
2370 | struct list_head *ptr; | |
2371 | struct iw_event iwe; | |
2372 | char *current_ev = buffer; | |
2373 | char *end_buf = buffer + IW_SCAN_MAX_DATA; | |
2374 | #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT) | |
2375 | char buf[64]; | |
2376 | #endif | |
2377 | ||
2378 | iface = netdev_priv(dev); | |
2379 | local = iface->local; | |
2380 | ap = local->ap; | |
2381 | ||
2382 | spin_lock_bh(&ap->sta_table_lock); | |
2383 | ||
2384 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2385 | ptr = ptr->next) { | |
2386 | struct sta_info *sta = (struct sta_info *) ptr; | |
2387 | ||
2388 | /* First entry *MUST* be the AP MAC address */ | |
2389 | memset(&iwe, 0, sizeof(iwe)); | |
2390 | iwe.cmd = SIOCGIWAP; | |
2391 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
2392 | memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN); | |
2393 | iwe.len = IW_EV_ADDR_LEN; | |
ccc58057 DM |
2394 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2395 | &iwe, IW_EV_ADDR_LEN); | |
ff1d2767 JM |
2396 | |
2397 | /* Use the mode to indicate if it's a station or | |
2398 | * an Access Point */ | |
2399 | memset(&iwe, 0, sizeof(iwe)); | |
2400 | iwe.cmd = SIOCGIWMODE; | |
2401 | if (sta->ap) | |
2402 | iwe.u.mode = IW_MODE_MASTER; | |
2403 | else | |
2404 | iwe.u.mode = IW_MODE_INFRA; | |
2405 | iwe.len = IW_EV_UINT_LEN; | |
ccc58057 DM |
2406 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2407 | &iwe, IW_EV_UINT_LEN); | |
ff1d2767 JM |
2408 | |
2409 | /* Some quality */ | |
2410 | memset(&iwe, 0, sizeof(iwe)); | |
2411 | iwe.cmd = IWEVQUAL; | |
2412 | if (sta->last_rx_silence == 0) | |
2413 | iwe.u.qual.qual = sta->last_rx_signal < 27 ? | |
2414 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2415 | else | |
2416 | iwe.u.qual.qual = sta->last_rx_signal - | |
2417 | sta->last_rx_silence - 35; | |
2418 | iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2419 | iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2420 | iwe.u.qual.updated = sta->last_rx_updated; | |
2421 | iwe.len = IW_EV_QUAL_LEN; | |
ccc58057 DM |
2422 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2423 | &iwe, IW_EV_QUAL_LEN); | |
ff1d2767 JM |
2424 | |
2425 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2426 | if (sta->ap) { | |
2427 | memset(&iwe, 0, sizeof(iwe)); | |
2428 | iwe.cmd = SIOCGIWESSID; | |
2429 | iwe.u.data.length = sta->u.ap.ssid_len; | |
2430 | iwe.u.data.flags = 1; | |
ccc58057 DM |
2431 | current_ev = iwe_stream_add_point(info, current_ev, |
2432 | end_buf, &iwe, | |
ff1d2767 JM |
2433 | sta->u.ap.ssid); |
2434 | ||
2435 | memset(&iwe, 0, sizeof(iwe)); | |
2436 | iwe.cmd = SIOCGIWENCODE; | |
2437 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
2438 | iwe.u.data.flags = | |
2439 | IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
2440 | else | |
2441 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
ccc58057 DM |
2442 | current_ev = iwe_stream_add_point(info, current_ev, |
2443 | end_buf, &iwe, | |
2444 | sta->u.ap.ssid); | |
ff1d2767 JM |
2445 | |
2446 | if (sta->u.ap.channel > 0 && | |
2447 | sta->u.ap.channel <= FREQ_COUNT) { | |
2448 | memset(&iwe, 0, sizeof(iwe)); | |
2449 | iwe.cmd = SIOCGIWFREQ; | |
2450 | iwe.u.freq.m = freq_list[sta->u.ap.channel - 1] | |
2451 | * 100000; | |
2452 | iwe.u.freq.e = 1; | |
2453 | current_ev = iwe_stream_add_event( | |
ccc58057 | 2454 | info, current_ev, end_buf, &iwe, |
ff1d2767 JM |
2455 | IW_EV_FREQ_LEN); |
2456 | } | |
2457 | ||
2458 | memset(&iwe, 0, sizeof(iwe)); | |
2459 | iwe.cmd = IWEVCUSTOM; | |
2460 | sprintf(buf, "beacon_interval=%d", | |
2461 | sta->listen_interval); | |
2462 | iwe.u.data.length = strlen(buf); | |
ccc58057 DM |
2463 | current_ev = iwe_stream_add_point(info, current_ev, |
2464 | end_buf, &iwe, buf); | |
ff1d2767 JM |
2465 | } |
2466 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2467 | ||
c28df16e | 2468 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2469 | |
2470 | /* To be continued, we should make good use of IWEVCUSTOM */ | |
2471 | } | |
2472 | ||
2473 | spin_unlock_bh(&ap->sta_table_lock); | |
2474 | ||
2475 | return current_ev - buffer; | |
2476 | } | |
2477 | ||
2478 | ||
2479 | static int prism2_hostapd_add_sta(struct ap_data *ap, | |
2480 | struct prism2_hostapd_param *param) | |
2481 | { | |
2482 | struct sta_info *sta; | |
2483 | ||
2484 | spin_lock_bh(&ap->sta_table_lock); | |
2485 | sta = ap_get_sta(ap, param->sta_addr); | |
2486 | if (sta) | |
2487 | atomic_inc(&sta->users); | |
2488 | spin_unlock_bh(&ap->sta_table_lock); | |
2489 | ||
2490 | if (sta == NULL) { | |
2491 | sta = ap_add_sta(ap, param->sta_addr); | |
2492 | if (sta == NULL) | |
2493 | return -1; | |
2494 | } | |
2495 | ||
2496 | if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2497 | hostap_event_new_sta(sta->local->dev, sta); | |
2498 | ||
2499 | sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2500 | sta->last_rx = jiffies; | |
2501 | sta->aid = param->u.add_sta.aid; | |
2502 | sta->capability = param->u.add_sta.capability; | |
2503 | sta->tx_supp_rates = param->u.add_sta.tx_supp_rates; | |
2504 | if (sta->tx_supp_rates & WLAN_RATE_1M) | |
2505 | sta->supported_rates[0] = 2; | |
2506 | if (sta->tx_supp_rates & WLAN_RATE_2M) | |
2507 | sta->supported_rates[1] = 4; | |
2508 | if (sta->tx_supp_rates & WLAN_RATE_5M5) | |
2509 | sta->supported_rates[2] = 11; | |
2510 | if (sta->tx_supp_rates & WLAN_RATE_11M) | |
2511 | sta->supported_rates[3] = 22; | |
2512 | prism2_check_tx_rates(sta); | |
2513 | atomic_dec(&sta->users); | |
2514 | return 0; | |
2515 | } | |
2516 | ||
2517 | ||
2518 | static int prism2_hostapd_remove_sta(struct ap_data *ap, | |
2519 | struct prism2_hostapd_param *param) | |
2520 | { | |
2521 | struct sta_info *sta; | |
2522 | ||
2523 | spin_lock_bh(&ap->sta_table_lock); | |
2524 | sta = ap_get_sta(ap, param->sta_addr); | |
2525 | if (sta) { | |
2526 | ap_sta_hash_del(ap, sta); | |
2527 | list_del(&sta->list); | |
2528 | } | |
2529 | spin_unlock_bh(&ap->sta_table_lock); | |
2530 | ||
2531 | if (!sta) | |
2532 | return -ENOENT; | |
2533 | ||
2534 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2535 | hostap_event_expired_sta(sta->local->dev, sta); | |
2536 | ap_free_sta(ap, sta); | |
2537 | ||
2538 | return 0; | |
2539 | } | |
2540 | ||
2541 | ||
2542 | static int prism2_hostapd_get_info_sta(struct ap_data *ap, | |
2543 | struct prism2_hostapd_param *param) | |
2544 | { | |
2545 | struct sta_info *sta; | |
2546 | ||
2547 | spin_lock_bh(&ap->sta_table_lock); | |
2548 | sta = ap_get_sta(ap, param->sta_addr); | |
2549 | if (sta) | |
2550 | atomic_inc(&sta->users); | |
2551 | spin_unlock_bh(&ap->sta_table_lock); | |
2552 | ||
2553 | if (!sta) | |
2554 | return -ENOENT; | |
2555 | ||
2556 | param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ; | |
2557 | ||
2558 | atomic_dec(&sta->users); | |
2559 | ||
2560 | return 1; | |
2561 | } | |
2562 | ||
2563 | ||
2564 | static int prism2_hostapd_set_flags_sta(struct ap_data *ap, | |
2565 | struct prism2_hostapd_param *param) | |
2566 | { | |
2567 | struct sta_info *sta; | |
2568 | ||
2569 | spin_lock_bh(&ap->sta_table_lock); | |
2570 | sta = ap_get_sta(ap, param->sta_addr); | |
2571 | if (sta) { | |
2572 | sta->flags |= param->u.set_flags_sta.flags_or; | |
2573 | sta->flags &= param->u.set_flags_sta.flags_and; | |
2574 | } | |
2575 | spin_unlock_bh(&ap->sta_table_lock); | |
2576 | ||
2577 | if (!sta) | |
2578 | return -ENOENT; | |
2579 | ||
2580 | return 0; | |
2581 | } | |
2582 | ||
2583 | ||
2584 | static int prism2_hostapd_sta_clear_stats(struct ap_data *ap, | |
2585 | struct prism2_hostapd_param *param) | |
2586 | { | |
2587 | struct sta_info *sta; | |
2588 | int rate; | |
2589 | ||
2590 | spin_lock_bh(&ap->sta_table_lock); | |
2591 | sta = ap_get_sta(ap, param->sta_addr); | |
2592 | if (sta) { | |
2593 | sta->rx_packets = sta->tx_packets = 0; | |
2594 | sta->rx_bytes = sta->tx_bytes = 0; | |
2595 | for (rate = 0; rate < WLAN_RATE_COUNT; rate++) { | |
2596 | sta->tx_count[rate] = 0; | |
2597 | sta->rx_count[rate] = 0; | |
2598 | } | |
2599 | } | |
2600 | spin_unlock_bh(&ap->sta_table_lock); | |
2601 | ||
2602 | if (!sta) | |
2603 | return -ENOENT; | |
2604 | ||
2605 | return 0; | |
2606 | } | |
2607 | ||
2608 | ||
5fad5a2e | 2609 | int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param) |
ff1d2767 JM |
2610 | { |
2611 | switch (param->cmd) { | |
2612 | case PRISM2_HOSTAPD_FLUSH: | |
2613 | ap_control_kickall(ap); | |
2614 | return 0; | |
2615 | case PRISM2_HOSTAPD_ADD_STA: | |
2616 | return prism2_hostapd_add_sta(ap, param); | |
2617 | case PRISM2_HOSTAPD_REMOVE_STA: | |
2618 | return prism2_hostapd_remove_sta(ap, param); | |
2619 | case PRISM2_HOSTAPD_GET_INFO_STA: | |
2620 | return prism2_hostapd_get_info_sta(ap, param); | |
2621 | case PRISM2_HOSTAPD_SET_FLAGS_STA: | |
2622 | return prism2_hostapd_set_flags_sta(ap, param); | |
2623 | case PRISM2_HOSTAPD_STA_CLEAR_STATS: | |
2624 | return prism2_hostapd_sta_clear_stats(ap, param); | |
2625 | default: | |
2626 | printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n", | |
2627 | param->cmd); | |
2628 | return -EOPNOTSUPP; | |
2629 | } | |
2630 | } | |
2631 | ||
2632 | ||
2633 | /* Update station info for host-based TX rate control and return current | |
2634 | * TX rate */ | |
2635 | static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev) | |
2636 | { | |
2637 | int ret = sta->tx_rate; | |
2638 | struct hostap_interface *iface; | |
2639 | local_info_t *local; | |
2640 | ||
2641 | iface = netdev_priv(dev); | |
2642 | local = iface->local; | |
2643 | ||
2644 | sta->tx_count[sta->tx_rate_idx]++; | |
2645 | sta->tx_since_last_failure++; | |
2646 | sta->tx_consecutive_exc = 0; | |
2647 | if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT && | |
2648 | sta->tx_rate_idx < sta->tx_max_rate) { | |
2649 | /* use next higher rate */ | |
2650 | int old_rate, new_rate; | |
2651 | old_rate = new_rate = sta->tx_rate_idx; | |
2652 | while (new_rate < sta->tx_max_rate) { | |
2653 | new_rate++; | |
2654 | if (ap_tx_rate_ok(new_rate, sta, local)) { | |
2655 | sta->tx_rate_idx = new_rate; | |
2656 | break; | |
2657 | } | |
2658 | } | |
2659 | if (old_rate != sta->tx_rate_idx) { | |
2660 | switch (sta->tx_rate_idx) { | |
2661 | case 0: sta->tx_rate = 10; break; | |
2662 | case 1: sta->tx_rate = 20; break; | |
2663 | case 2: sta->tx_rate = 55; break; | |
2664 | case 3: sta->tx_rate = 110; break; | |
2665 | default: sta->tx_rate = 0; break; | |
2666 | } | |
e174961c JB |
2667 | PDEBUG(DEBUG_AP, "%s: STA %pM TX rate raised to %d\n", |
2668 | dev->name, sta->addr, sta->tx_rate); | |
ff1d2767 JM |
2669 | } |
2670 | sta->tx_since_last_failure = 0; | |
2671 | } | |
2672 | ||
2673 | return ret; | |
2674 | } | |
2675 | ||
2676 | ||
2677 | /* Called only from software IRQ. Called for each TX frame prior possible | |
2678 | * encryption and transmit. */ | |
2679 | ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx) | |
2680 | { | |
2681 | struct sta_info *sta = NULL; | |
2682 | struct sk_buff *skb = tx->skb; | |
2683 | int set_tim, ret; | |
1ea893fd | 2684 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2685 | struct hostap_skb_tx_data *meta; |
2686 | ||
2687 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
2688 | ret = AP_TX_CONTINUE; | |
2689 | if (local->ap == NULL || skb->len < 10 || | |
2690 | meta->iface->type == HOSTAP_INTERFACE_STA) | |
2691 | goto out; | |
2692 | ||
1ea893fd | 2693 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2694 | |
2695 | if (hdr->addr1[0] & 0x01) { | |
2696 | /* broadcast/multicast frame - no AP related processing */ | |
b9180990 PR |
2697 | if (local->ap->num_sta <= 0) |
2698 | ret = AP_TX_DROP; | |
ff1d2767 JM |
2699 | goto out; |
2700 | } | |
2701 | ||
2702 | /* unicast packet - check whether destination STA is associated */ | |
2703 | spin_lock(&local->ap->sta_table_lock); | |
2704 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2705 | if (sta) | |
2706 | atomic_inc(&sta->users); | |
2707 | spin_unlock(&local->ap->sta_table_lock); | |
2708 | ||
5bee720f JM |
2709 | if (local->iw_mode == IW_MODE_MASTER && sta == NULL && |
2710 | !(meta->flags & HOSTAP_TX_FLAGS_WDS) && | |
ff1d2767 JM |
2711 | meta->iface->type != HOSTAP_INTERFACE_MASTER && |
2712 | meta->iface->type != HOSTAP_INTERFACE_AP) { | |
2713 | #if 0 | |
2714 | /* This can happen, e.g., when wlan0 is added to a bridge and | |
2715 | * bridging code does not know which port is the correct target | |
2716 | * for a unicast frame. In this case, the packet is send to all | |
2717 | * ports of the bridge. Since this is a valid scenario, do not | |
2718 | * print out any errors here. */ | |
2719 | if (net_ratelimit()) { | |
2720 | printk(KERN_DEBUG "AP: drop packet to non-associated " | |
e174961c | 2721 | "STA %pM\n", hdr->addr1); |
ff1d2767 JM |
2722 | } |
2723 | #endif | |
2724 | local->ap->tx_drop_nonassoc++; | |
2725 | ret = AP_TX_DROP; | |
2726 | goto out; | |
2727 | } | |
2728 | ||
2729 | if (sta == NULL) | |
2730 | goto out; | |
2731 | ||
2732 | if (!(sta->flags & WLAN_STA_AUTHORIZED)) | |
2733 | ret = AP_TX_CONTINUE_NOT_AUTHORIZED; | |
2734 | ||
2735 | /* Set tx_rate if using host-based TX rate control */ | |
2736 | if (!local->fw_tx_rate_control) | |
2737 | local->ap->last_tx_rate = meta->rate = | |
2738 | ap_update_sta_tx_rate(sta, local->dev); | |
2739 | ||
2740 | if (local->iw_mode != IW_MODE_MASTER) | |
2741 | goto out; | |
2742 | ||
2743 | if (!(sta->flags & WLAN_STA_PS)) | |
2744 | goto out; | |
2745 | ||
5bee720f JM |
2746 | if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) { |
2747 | /* indicate to STA that more frames follow */ | |
1ea893fd | 2748 | hdr->frame_control |= |
c1b4aa3f | 2749 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
5bee720f | 2750 | } |
ff1d2767 | 2751 | |
5bee720f JM |
2752 | if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) { |
2753 | /* packet was already buffered and now send due to | |
2754 | * PS poll, so do not rebuffer it */ | |
2755 | goto out; | |
ff1d2767 JM |
2756 | } |
2757 | ||
2758 | if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) { | |
e174961c JB |
2759 | PDEBUG(DEBUG_PS, "%s: No more space in STA (%pM)'s" |
2760 | "PS mode buffer\n", | |
2761 | local->dev->name, sta->addr); | |
ff1d2767 JM |
2762 | /* Make sure that TIM is set for the station (it might not be |
2763 | * after AP wlan hw reset). */ | |
2764 | /* FIX: should fix hw reset to restore bits based on STA | |
2765 | * buffer state.. */ | |
2766 | hostap_set_tim(local, sta->aid, 1); | |
2767 | sta->flags |= WLAN_STA_TIM; | |
2768 | ret = AP_TX_DROP; | |
2769 | goto out; | |
2770 | } | |
2771 | ||
2772 | /* STA in PS mode, buffer frame for later delivery */ | |
2773 | set_tim = skb_queue_empty(&sta->tx_buf); | |
2774 | skb_queue_tail(&sta->tx_buf, skb); | |
2775 | /* FIX: could save RX time to skb and expire buffered frames after | |
2776 | * some time if STA does not poll for them */ | |
2777 | ||
2778 | if (set_tim) { | |
2779 | if (sta->flags & WLAN_STA_TIM) | |
2780 | PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n", | |
2781 | sta->aid); | |
2782 | hostap_set_tim(local, sta->aid, 1); | |
2783 | sta->flags |= WLAN_STA_TIM; | |
2784 | } | |
2785 | ||
2786 | ret = AP_TX_BUFFERED; | |
2787 | ||
2788 | out: | |
2789 | if (sta != NULL) { | |
2790 | if (ret == AP_TX_CONTINUE || | |
2791 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) { | |
2792 | sta->tx_packets++; | |
2793 | sta->tx_bytes += skb->len; | |
2794 | sta->last_tx = jiffies; | |
2795 | } | |
2796 | ||
2797 | if ((ret == AP_TX_CONTINUE || | |
2798 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) && | |
2799 | sta->crypt && tx->host_encrypt) { | |
2800 | tx->crypt = sta->crypt; | |
2801 | tx->sta_ptr = sta; /* hostap_handle_sta_release() will | |
2802 | * be called to release sta info | |
2803 | * later */ | |
2804 | } else | |
2805 | atomic_dec(&sta->users); | |
2806 | } | |
2807 | ||
2808 | return ret; | |
2809 | } | |
2810 | ||
2811 | ||
2812 | void hostap_handle_sta_release(void *ptr) | |
2813 | { | |
2814 | struct sta_info *sta = ptr; | |
2815 | atomic_dec(&sta->users); | |
2816 | } | |
2817 | ||
2818 | ||
2819 | /* Called only as a tasklet (software IRQ) */ | |
2820 | void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb) | |
2821 | { | |
2822 | struct sta_info *sta; | |
1ea893fd | 2823 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2824 | struct hostap_skb_tx_data *meta; |
2825 | ||
1ea893fd | 2826 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2827 | meta = (struct hostap_skb_tx_data *) skb->cb; |
2828 | ||
2829 | spin_lock(&local->ap->sta_table_lock); | |
2830 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2831 | if (!sta) { | |
2832 | spin_unlock(&local->ap->sta_table_lock); | |
e174961c | 2833 | PDEBUG(DEBUG_AP, "%s: Could not find STA %pM" |
0795af57 | 2834 | " for this TX error (@%lu)\n", |
e174961c | 2835 | local->dev->name, hdr->addr1, jiffies); |
ff1d2767 JM |
2836 | return; |
2837 | } | |
2838 | ||
2839 | sta->tx_since_last_failure = 0; | |
2840 | sta->tx_consecutive_exc++; | |
74fae82c | 2841 | |
ff1d2767 JM |
2842 | if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD && |
2843 | sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) { | |
2844 | /* use next lower rate */ | |
2845 | int old, rate; | |
2846 | old = rate = sta->tx_rate_idx; | |
2847 | while (rate > 0) { | |
2848 | rate--; | |
2849 | if (ap_tx_rate_ok(rate, sta, local)) { | |
2850 | sta->tx_rate_idx = rate; | |
2851 | break; | |
2852 | } | |
2853 | } | |
2854 | if (old != sta->tx_rate_idx) { | |
2855 | switch (sta->tx_rate_idx) { | |
2856 | case 0: sta->tx_rate = 10; break; | |
2857 | case 1: sta->tx_rate = 20; break; | |
2858 | case 2: sta->tx_rate = 55; break; | |
2859 | case 3: sta->tx_rate = 110; break; | |
2860 | default: sta->tx_rate = 0; break; | |
2861 | } | |
e174961c JB |
2862 | PDEBUG(DEBUG_AP, |
2863 | "%s: STA %pM TX rate lowered to %d\n", | |
2864 | local->dev->name, sta->addr, sta->tx_rate); | |
ff1d2767 JM |
2865 | } |
2866 | sta->tx_consecutive_exc = 0; | |
2867 | } | |
2868 | spin_unlock(&local->ap->sta_table_lock); | |
2869 | } | |
2870 | ||
2871 | ||
2872 | static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta, | |
2873 | int pwrmgt, int type, int stype) | |
2874 | { | |
2875 | if (pwrmgt && !(sta->flags & WLAN_STA_PS)) { | |
2876 | sta->flags |= WLAN_STA_PS; | |
e174961c | 2877 | PDEBUG(DEBUG_PS2, "STA %pM changed to use PS " |
ff1d2767 | 2878 | "mode (type=0x%02X, stype=0x%02X)\n", |
e174961c | 2879 | sta->addr, type >> 2, stype >> 4); |
ff1d2767 JM |
2880 | } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) { |
2881 | sta->flags &= ~WLAN_STA_PS; | |
e174961c | 2882 | PDEBUG(DEBUG_PS2, "STA %pM changed to not use " |
ff1d2767 | 2883 | "PS mode (type=0x%02X, stype=0x%02X)\n", |
e174961c | 2884 | sta->addr, type >> 2, stype >> 4); |
4339d328 JM |
2885 | if (type != IEEE80211_FTYPE_CTL || |
2886 | stype != IEEE80211_STYPE_PSPOLL) | |
ff1d2767 JM |
2887 | schedule_packet_send(local, sta); |
2888 | } | |
2889 | } | |
2890 | ||
2891 | ||
2892 | /* Called only as a tasklet (software IRQ). Called for each RX frame to update | |
1ea893fd DW |
2893 | * STA power saving state. pwrmgt is a flag from 802.11 frame_control field. */ |
2894 | int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr) | |
ff1d2767 JM |
2895 | { |
2896 | struct sta_info *sta; | |
2897 | u16 fc; | |
2898 | ||
2899 | spin_lock(&local->ap->sta_table_lock); | |
2900 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2901 | if (sta) | |
2902 | atomic_inc(&sta->users); | |
2903 | spin_unlock(&local->ap->sta_table_lock); | |
2904 | ||
2905 | if (!sta) | |
2906 | return -1; | |
2907 | ||
1ea893fd | 2908 | fc = le16_to_cpu(hdr->frame_control); |
b2f4a2e3 | 2909 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
1ea893fd DW |
2910 | fc & IEEE80211_FCTL_FTYPE, |
2911 | fc & IEEE80211_FCTL_STYPE); | |
ff1d2767 JM |
2912 | |
2913 | atomic_dec(&sta->users); | |
2914 | return 0; | |
2915 | } | |
2916 | ||
2917 | ||
2918 | /* Called only as a tasklet (software IRQ). Called for each RX frame after | |
2919 | * getting RX header and payload from hardware. */ | |
2920 | ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev, | |
2921 | struct sk_buff *skb, | |
2922 | struct hostap_80211_rx_status *rx_stats, | |
2923 | int wds) | |
2924 | { | |
2925 | int ret; | |
2926 | struct sta_info *sta; | |
2927 | u16 fc, type, stype; | |
1ea893fd | 2928 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2929 | |
2930 | if (local->ap == NULL) | |
2931 | return AP_RX_CONTINUE; | |
2932 | ||
1ea893fd | 2933 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 | 2934 | |
1ea893fd DW |
2935 | fc = le16_to_cpu(hdr->frame_control); |
2936 | type = fc & IEEE80211_FCTL_FTYPE; | |
2937 | stype = fc & IEEE80211_FCTL_STYPE; | |
ff1d2767 JM |
2938 | |
2939 | spin_lock(&local->ap->sta_table_lock); | |
2940 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2941 | if (sta) | |
2942 | atomic_inc(&sta->users); | |
2943 | spin_unlock(&local->ap->sta_table_lock); | |
2944 | ||
2945 | if (sta && !(sta->flags & WLAN_STA_AUTHORIZED)) | |
2946 | ret = AP_RX_CONTINUE_NOT_AUTHORIZED; | |
2947 | else | |
2948 | ret = AP_RX_CONTINUE; | |
2949 | ||
2950 | ||
b2f4a2e3 | 2951 | if (fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
2952 | if (!wds && (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) { |
2953 | if (local->hostapd) { | |
2954 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
2955 | PRISM2_RX_NON_ASSOC); | |
2956 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2957 | } else { | |
2958 | printk(KERN_DEBUG "%s: dropped received packet" | |
e174961c | 2959 | " from non-associated STA %pM" |
ff1d2767 | 2960 | " (type=0x%02x, subtype=0x%02x)\n", |
e174961c | 2961 | dev->name, hdr->addr2, |
4339d328 | 2962 | type >> 2, stype >> 4); |
ff1d2767 JM |
2963 | hostap_rx(dev, skb, rx_stats); |
2964 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2965 | } | |
2966 | ret = AP_RX_EXIT; | |
2967 | goto out; | |
2968 | } | |
b2f4a2e3 | 2969 | } else if (fc & IEEE80211_FCTL_FROMDS) { |
ff1d2767 JM |
2970 | if (!wds) { |
2971 | /* FromDS frame - not for us; probably | |
2972 | * broadcast/multicast in another BSS - drop */ | |
2973 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { | |
2974 | printk(KERN_DEBUG "Odd.. FromDS packet " | |
2975 | "received with own BSSID\n"); | |
2976 | hostap_dump_rx_80211(dev->name, skb, rx_stats); | |
2977 | } | |
2978 | ret = AP_RX_DROP; | |
2979 | goto out; | |
2980 | } | |
4339d328 | 2981 | } else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL && |
ff1d2767 JM |
2982 | memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { |
2983 | ||
2984 | if (local->hostapd) { | |
2985 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
2986 | PRISM2_RX_NON_ASSOC); | |
2987 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2988 | } else { | |
2989 | /* At least Lucent f/w seems to send data::nullfunc | |
2990 | * frames with no ToDS flag when the current AP returns | |
2991 | * after being unavailable for some time. Speed up | |
2992 | * re-association by informing the station about it not | |
2993 | * being associated. */ | |
e174961c JB |
2994 | printk(KERN_DEBUG "%s: rejected received nullfunc frame" |
2995 | " without ToDS from not associated STA %pM\n", | |
2996 | dev->name, hdr->addr2); | |
ff1d2767 JM |
2997 | hostap_rx(dev, skb, rx_stats); |
2998 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2999 | } | |
3000 | ret = AP_RX_EXIT; | |
3001 | goto out; | |
4339d328 | 3002 | } else if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
3003 | /* At least Lucent cards seem to send periodic nullfunc |
3004 | * frames with ToDS. Let these through to update SQ | |
3005 | * stats and PS state. Nullfunc frames do not contain | |
3006 | * any data and they will be dropped below. */ | |
3007 | } else { | |
3008 | /* If BSSID (Addr3) is foreign, this frame is a normal | |
3009 | * broadcast frame from an IBSS network. Drop it silently. | |
3010 | * If BSSID is own, report the dropping of this frame. */ | |
3011 | if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { | |
e174961c JB |
3012 | printk(KERN_DEBUG "%s: dropped received packet from %pM" |
3013 | " with no ToDS flag " | |
0795af57 | 3014 | "(type=0x%02x, subtype=0x%02x)\n", dev->name, |
e174961c | 3015 | hdr->addr2, type >> 2, stype >> 4); |
ff1d2767 JM |
3016 | hostap_dump_rx_80211(dev->name, skb, rx_stats); |
3017 | } | |
3018 | ret = AP_RX_DROP; | |
3019 | goto out; | |
3020 | } | |
3021 | ||
3022 | if (sta) { | |
b2f4a2e3 | 3023 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
ff1d2767 JM |
3024 | type, stype); |
3025 | ||
3026 | sta->rx_packets++; | |
3027 | sta->rx_bytes += skb->len; | |
3028 | sta->last_rx = jiffies; | |
3029 | } | |
3030 | ||
4339d328 | 3031 | if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC && |
b2f4a2e3 | 3032 | fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
3033 | if (local->hostapd) { |
3034 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
3035 | PRISM2_RX_NULLFUNC_ACK); | |
3036 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
3037 | } else { | |
3038 | /* some STA f/w's seem to require control::ACK frame | |
3039 | * for data::nullfunc, but Prism2 f/w 0.8.0 (at least | |
3040 | * from Compaq) does not send this.. Try to generate | |
3041 | * ACK for these frames from the host driver to make | |
3042 | * power saving work with, e.g., Lucent WaveLAN f/w */ | |
3043 | hostap_rx(dev, skb, rx_stats); | |
3044 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3045 | } | |
3046 | ret = AP_RX_EXIT; | |
3047 | goto out; | |
3048 | } | |
3049 | ||
3050 | out: | |
3051 | if (sta) | |
3052 | atomic_dec(&sta->users); | |
3053 | ||
3054 | return ret; | |
3055 | } | |
3056 | ||
3057 | ||
3058 | /* Called only as a tasklet (software IRQ) */ | |
3059 | int hostap_handle_sta_crypto(local_info_t *local, | |
1ea893fd | 3060 | struct ieee80211_hdr *hdr, |
274bfb8d | 3061 | struct lib80211_crypt_data **crypt, |
62fe7e37 | 3062 | void **sta_ptr) |
ff1d2767 JM |
3063 | { |
3064 | struct sta_info *sta; | |
3065 | ||
3066 | spin_lock(&local->ap->sta_table_lock); | |
3067 | sta = ap_get_sta(local->ap, hdr->addr2); | |
3068 | if (sta) | |
3069 | atomic_inc(&sta->users); | |
3070 | spin_unlock(&local->ap->sta_table_lock); | |
3071 | ||
3072 | if (!sta) | |
3073 | return -1; | |
3074 | ||
3075 | if (sta->crypt) { | |
3076 | *crypt = sta->crypt; | |
3077 | *sta_ptr = sta; | |
3078 | /* hostap_handle_sta_release() will be called to release STA | |
3079 | * info */ | |
3080 | } else | |
3081 | atomic_dec(&sta->users); | |
3082 | ||
3083 | return 0; | |
3084 | } | |
3085 | ||
3086 | ||
3087 | /* Called only as a tasklet (software IRQ) */ | |
3088 | int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr) | |
3089 | { | |
3090 | struct sta_info *sta; | |
3091 | int ret = 0; | |
3092 | ||
3093 | spin_lock(&ap->sta_table_lock); | |
3094 | sta = ap_get_sta(ap, sta_addr); | |
3095 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
3096 | ret = 1; | |
3097 | spin_unlock(&ap->sta_table_lock); | |
3098 | ||
3099 | return ret; | |
3100 | } | |
3101 | ||
3102 | ||
3103 | /* Called only as a tasklet (software IRQ) */ | |
3104 | int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr) | |
3105 | { | |
3106 | struct sta_info *sta; | |
3107 | int ret = 0; | |
3108 | ||
3109 | spin_lock(&ap->sta_table_lock); | |
3110 | sta = ap_get_sta(ap, sta_addr); | |
3111 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap && | |
3112 | ((sta->flags & WLAN_STA_AUTHORIZED) || | |
3113 | ap->local->ieee_802_1x == 0)) | |
3114 | ret = 1; | |
3115 | spin_unlock(&ap->sta_table_lock); | |
3116 | ||
3117 | return ret; | |
3118 | } | |
3119 | ||
3120 | ||
3121 | /* Called only as a tasklet (software IRQ) */ | |
3122 | int hostap_add_sta(struct ap_data *ap, u8 *sta_addr) | |
3123 | { | |
3124 | struct sta_info *sta; | |
3125 | int ret = 1; | |
3126 | ||
3127 | if (!ap) | |
3128 | return -1; | |
3129 | ||
3130 | spin_lock(&ap->sta_table_lock); | |
3131 | sta = ap_get_sta(ap, sta_addr); | |
3132 | if (sta) | |
3133 | ret = 0; | |
3134 | spin_unlock(&ap->sta_table_lock); | |
3135 | ||
3136 | if (ret == 1) { | |
3137 | sta = ap_add_sta(ap, sta_addr); | |
3138 | if (!sta) | |
54b85f48 | 3139 | return -1; |
ff1d2767 JM |
3140 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; |
3141 | sta->ap = 1; | |
3142 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
3143 | /* No way of knowing which rates are supported since we did not | |
3144 | * get supported rates element from beacon/assoc req. Assume | |
3145 | * that remote end supports all 802.11b rates. */ | |
3146 | sta->supported_rates[0] = 0x82; | |
3147 | sta->supported_rates[1] = 0x84; | |
3148 | sta->supported_rates[2] = 0x0b; | |
3149 | sta->supported_rates[3] = 0x16; | |
3150 | sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M | | |
3151 | WLAN_RATE_5M5 | WLAN_RATE_11M; | |
3152 | sta->tx_rate = 110; | |
3153 | sta->tx_max_rate = sta->tx_rate_idx = 3; | |
3154 | } | |
3155 | ||
3156 | return ret; | |
3157 | } | |
3158 | ||
3159 | ||
3160 | /* Called only as a tasklet (software IRQ) */ | |
3161 | int hostap_update_rx_stats(struct ap_data *ap, | |
1ea893fd | 3162 | struct ieee80211_hdr *hdr, |
ff1d2767 JM |
3163 | struct hostap_80211_rx_status *rx_stats) |
3164 | { | |
3165 | struct sta_info *sta; | |
3166 | ||
3167 | if (!ap) | |
3168 | return -1; | |
3169 | ||
3170 | spin_lock(&ap->sta_table_lock); | |
3171 | sta = ap_get_sta(ap, hdr->addr2); | |
3172 | if (sta) { | |
3173 | sta->last_rx_silence = rx_stats->noise; | |
3174 | sta->last_rx_signal = rx_stats->signal; | |
3175 | sta->last_rx_rate = rx_stats->rate; | |
c28df16e | 3176 | sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
ff1d2767 JM |
3177 | if (rx_stats->rate == 10) |
3178 | sta->rx_count[0]++; | |
3179 | else if (rx_stats->rate == 20) | |
3180 | sta->rx_count[1]++; | |
3181 | else if (rx_stats->rate == 55) | |
3182 | sta->rx_count[2]++; | |
3183 | else if (rx_stats->rate == 110) | |
3184 | sta->rx_count[3]++; | |
3185 | } | |
3186 | spin_unlock(&ap->sta_table_lock); | |
3187 | ||
3188 | return sta ? 0 : -1; | |
3189 | } | |
3190 | ||
3191 | ||
3192 | void hostap_update_rates(local_info_t *local) | |
3193 | { | |
c1505731 | 3194 | struct sta_info *sta; |
ff1d2767 JM |
3195 | struct ap_data *ap = local->ap; |
3196 | ||
3197 | if (!ap) | |
3198 | return; | |
3199 | ||
3200 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 3201 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
3202 | prism2_check_tx_rates(sta); |
3203 | } | |
3204 | spin_unlock_bh(&ap->sta_table_lock); | |
3205 | } | |
3206 | ||
3207 | ||
5fad5a2e | 3208 | void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent, |
274bfb8d | 3209 | struct lib80211_crypt_data ***crypt) |
ff1d2767 JM |
3210 | { |
3211 | struct sta_info *sta; | |
3212 | ||
3213 | spin_lock_bh(&ap->sta_table_lock); | |
3214 | sta = ap_get_sta(ap, addr); | |
3215 | if (sta) | |
3216 | atomic_inc(&sta->users); | |
3217 | spin_unlock_bh(&ap->sta_table_lock); | |
3218 | ||
3219 | if (!sta && permanent) | |
3220 | sta = ap_add_sta(ap, addr); | |
3221 | ||
3222 | if (!sta) | |
3223 | return NULL; | |
3224 | ||
3225 | if (permanent) | |
3226 | sta->flags |= WLAN_STA_PERM; | |
3227 | ||
3228 | *crypt = &sta->crypt; | |
3229 | ||
3230 | return sta; | |
3231 | } | |
3232 | ||
3233 | ||
3234 | void hostap_add_wds_links(local_info_t *local) | |
3235 | { | |
3236 | struct ap_data *ap = local->ap; | |
c1505731 | 3237 | struct sta_info *sta; |
ff1d2767 JM |
3238 | |
3239 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 3240 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
3241 | if (sta->ap) |
3242 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
3243 | } | |
3244 | spin_unlock_bh(&ap->sta_table_lock); | |
3245 | ||
3246 | schedule_work(&local->ap->wds_oper_queue); | |
3247 | } | |
3248 | ||
3249 | ||
3250 | void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type) | |
3251 | { | |
3252 | struct wds_oper_data *entry; | |
3253 | ||
3254 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
3255 | if (!entry) | |
3256 | return; | |
3257 | memcpy(entry->addr, addr, ETH_ALEN); | |
3258 | entry->type = type; | |
3259 | spin_lock_bh(&local->lock); | |
3260 | entry->next = local->ap->wds_oper_entries; | |
3261 | local->ap->wds_oper_entries = entry; | |
3262 | spin_unlock_bh(&local->lock); | |
3263 | ||
3264 | schedule_work(&local->ap->wds_oper_queue); | |
3265 | } | |
3266 | ||
3267 | ||
3268 | EXPORT_SYMBOL(hostap_init_data); | |
3269 | EXPORT_SYMBOL(hostap_init_ap_proc); | |
3270 | EXPORT_SYMBOL(hostap_free_data); | |
3271 | EXPORT_SYMBOL(hostap_check_sta_fw_version); | |
ff1d2767 | 3272 | EXPORT_SYMBOL(hostap_handle_sta_tx_exc); |
ff1d2767 | 3273 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
ff1d2767 | 3274 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |