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> |
ee40fa06 | 24 | #include <linux/export.h> |
6eb07caf | 25 | #include <linux/moduleparam.h> |
5fad5a2e AB |
26 | |
27 | #include "hostap_wlan.h" | |
28 | #include "hostap.h" | |
29 | #include "hostap_ap.h" | |
30 | ||
ff1d2767 JM |
31 | static int other_ap_policy[MAX_PARM_DEVICES] = { AP_OTHER_AP_SKIP_ALL, |
32 | DEF_INTS }; | |
33 | module_param_array(other_ap_policy, int, NULL, 0444); | |
34 | MODULE_PARM_DESC(other_ap_policy, "Other AP beacon monitoring policy (0-3)"); | |
35 | ||
36 | static int ap_max_inactivity[MAX_PARM_DEVICES] = { AP_MAX_INACTIVITY_SEC, | |
37 | DEF_INTS }; | |
38 | module_param_array(ap_max_inactivity, int, NULL, 0444); | |
39 | MODULE_PARM_DESC(ap_max_inactivity, "AP timeout (in seconds) for station " | |
40 | "inactivity"); | |
41 | ||
42 | static int ap_bridge_packets[MAX_PARM_DEVICES] = { 1, DEF_INTS }; | |
43 | module_param_array(ap_bridge_packets, int, NULL, 0444); | |
44 | MODULE_PARM_DESC(ap_bridge_packets, "Bridge packets directly between " | |
45 | "stations"); | |
46 | ||
47 | static int autom_ap_wds[MAX_PARM_DEVICES] = { 0, DEF_INTS }; | |
48 | module_param_array(autom_ap_wds, int, NULL, 0444); | |
49 | MODULE_PARM_DESC(autom_ap_wds, "Add WDS connections to other APs " | |
50 | "automatically"); | |
51 | ||
52 | ||
53 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta); | |
54 | static void hostap_event_expired_sta(struct net_device *dev, | |
55 | struct sta_info *sta); | |
c4028958 | 56 | static void handle_add_proc_queue(struct work_struct *work); |
ff1d2767 JM |
57 | |
58 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 59 | static void handle_wds_oper_queue(struct work_struct *work); |
ff1d2767 | 60 | static void prism2_send_mgmt(struct net_device *dev, |
4339d328 | 61 | u16 type_subtype, char *body, |
ff1d2767 JM |
62 | int body_len, u8 *addr, u16 tx_cb_idx); |
63 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
64 | ||
65 | ||
66 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
67 | static int ap_debug_proc_read(char *page, char **start, off_t off, | |
68 | int count, int *eof, void *data) | |
69 | { | |
70 | char *p = page; | |
71 | struct ap_data *ap = (struct ap_data *) data; | |
72 | ||
73 | if (off != 0) { | |
74 | *eof = 1; | |
75 | return 0; | |
76 | } | |
77 | ||
78 | p += sprintf(p, "BridgedUnicastFrames=%u\n", ap->bridged_unicast); | |
79 | p += sprintf(p, "BridgedMulticastFrames=%u\n", ap->bridged_multicast); | |
80 | p += sprintf(p, "max_inactivity=%u\n", ap->max_inactivity / HZ); | |
81 | p += sprintf(p, "bridge_packets=%u\n", ap->bridge_packets); | |
82 | p += sprintf(p, "nullfunc_ack=%u\n", ap->nullfunc_ack); | |
83 | p += sprintf(p, "autom_ap_wds=%u\n", ap->autom_ap_wds); | |
84 | p += sprintf(p, "auth_algs=%u\n", ap->local->auth_algs); | |
85 | p += sprintf(p, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc); | |
86 | ||
87 | return (p - page); | |
88 | } | |
89 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
90 | ||
91 | ||
92 | static void ap_sta_hash_add(struct ap_data *ap, struct sta_info *sta) | |
93 | { | |
94 | sta->hnext = ap->sta_hash[STA_HASH(sta->addr)]; | |
95 | ap->sta_hash[STA_HASH(sta->addr)] = sta; | |
96 | } | |
97 | ||
98 | static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta) | |
99 | { | |
100 | struct sta_info *s; | |
101 | ||
102 | s = ap->sta_hash[STA_HASH(sta->addr)]; | |
103 | if (s == NULL) return; | |
104 | if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) { | |
105 | ap->sta_hash[STA_HASH(sta->addr)] = s->hnext; | |
106 | return; | |
107 | } | |
108 | ||
109 | while (s->hnext != NULL && memcmp(s->hnext->addr, sta->addr, ETH_ALEN) | |
110 | != 0) | |
111 | s = s->hnext; | |
112 | if (s->hnext != NULL) | |
113 | s->hnext = s->hnext->hnext; | |
114 | else | |
e174961c JB |
115 | printk("AP: could not remove STA %pM from hash table\n", |
116 | sta->addr); | |
ff1d2767 JM |
117 | } |
118 | ||
119 | static void ap_free_sta(struct ap_data *ap, struct sta_info *sta) | |
120 | { | |
121 | if (sta->ap && sta->local) | |
122 | hostap_event_expired_sta(sta->local->dev, sta); | |
123 | ||
124 | if (ap->proc != NULL) { | |
125 | char name[20]; | |
e174961c | 126 | sprintf(name, "%pM", sta->addr); |
ff1d2767 JM |
127 | remove_proc_entry(name, ap->proc); |
128 | } | |
129 | ||
130 | if (sta->crypt) { | |
131 | sta->crypt->ops->deinit(sta->crypt->priv); | |
132 | kfree(sta->crypt); | |
133 | sta->crypt = NULL; | |
134 | } | |
135 | ||
136 | skb_queue_purge(&sta->tx_buf); | |
137 | ||
138 | ap->num_sta--; | |
139 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
140 | if (sta->aid > 0) | |
141 | ap->sta_aid[sta->aid - 1] = NULL; | |
142 | ||
143 | if (!sta->ap && sta->u.sta.challenge) | |
144 | kfree(sta->u.sta.challenge); | |
145 | del_timer(&sta->timer); | |
146 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
147 | ||
148 | kfree(sta); | |
149 | } | |
150 | ||
151 | ||
152 | static void hostap_set_tim(local_info_t *local, int aid, int set) | |
153 | { | |
154 | if (local->func->set_tim) | |
155 | local->func->set_tim(local->dev, aid, set); | |
156 | } | |
157 | ||
158 | ||
159 | static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta) | |
160 | { | |
161 | union iwreq_data wrqu; | |
162 | memset(&wrqu, 0, sizeof(wrqu)); | |
163 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
164 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
165 | wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL); | |
166 | } | |
167 | ||
168 | ||
169 | static void hostap_event_expired_sta(struct net_device *dev, | |
170 | struct sta_info *sta) | |
171 | { | |
172 | union iwreq_data wrqu; | |
173 | memset(&wrqu, 0, sizeof(wrqu)); | |
174 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
175 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
176 | wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL); | |
177 | } | |
178 | ||
179 | ||
180 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
181 | ||
182 | static void ap_handle_timer(unsigned long data) | |
183 | { | |
184 | struct sta_info *sta = (struct sta_info *) data; | |
185 | local_info_t *local; | |
186 | struct ap_data *ap; | |
187 | unsigned long next_time = 0; | |
188 | int was_assoc; | |
189 | ||
190 | if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) { | |
191 | PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n"); | |
192 | return; | |
193 | } | |
194 | ||
195 | local = sta->local; | |
196 | ap = local->ap; | |
197 | was_assoc = sta->flags & WLAN_STA_ASSOC; | |
198 | ||
199 | if (atomic_read(&sta->users) != 0) | |
200 | next_time = jiffies + HZ; | |
201 | else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH)) | |
202 | next_time = jiffies + ap->max_inactivity; | |
203 | ||
204 | if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) { | |
205 | /* station activity detected; reset timeout state */ | |
206 | sta->timeout_next = STA_NULLFUNC; | |
207 | next_time = sta->last_rx + ap->max_inactivity; | |
208 | } else if (sta->timeout_next == STA_DISASSOC && | |
209 | !(sta->flags & WLAN_STA_PENDING_POLL)) { | |
210 | /* STA ACKed data nullfunc frame poll */ | |
211 | sta->timeout_next = STA_NULLFUNC; | |
212 | next_time = jiffies + ap->max_inactivity; | |
213 | } | |
214 | ||
215 | if (next_time) { | |
216 | sta->timer.expires = next_time; | |
217 | add_timer(&sta->timer); | |
218 | return; | |
219 | } | |
220 | ||
221 | if (sta->ap) | |
222 | sta->timeout_next = STA_DEAUTH; | |
223 | ||
224 | if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) { | |
225 | spin_lock(&ap->sta_table_lock); | |
226 | ap_sta_hash_del(ap, sta); | |
227 | list_del(&sta->list); | |
228 | spin_unlock(&ap->sta_table_lock); | |
229 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
230 | } else if (sta->timeout_next == STA_DISASSOC) | |
231 | sta->flags &= ~WLAN_STA_ASSOC; | |
232 | ||
233 | if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
234 | hostap_event_expired_sta(local->dev, sta); | |
235 | ||
236 | if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 && | |
237 | !skb_queue_empty(&sta->tx_buf)) { | |
238 | hostap_set_tim(local, sta->aid, 0); | |
239 | sta->flags &= ~WLAN_STA_TIM; | |
240 | } | |
241 | ||
242 | if (sta->ap) { | |
243 | if (ap->autom_ap_wds) { | |
244 | PDEBUG(DEBUG_AP, "%s: removing automatic WDS " | |
e174961c JB |
245 | "connection to AP %pM\n", |
246 | local->dev->name, sta->addr); | |
ff1d2767 JM |
247 | hostap_wds_link_oper(local, sta->addr, WDS_DEL); |
248 | } | |
249 | } else if (sta->timeout_next == STA_NULLFUNC) { | |
250 | /* send data frame to poll STA and check whether this frame | |
251 | * is ACKed */ | |
4339d328 | 252 | /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but |
ff1d2767 JM |
253 | * it is apparently not retried so TX Exc events are not |
254 | * received for it */ | |
255 | sta->flags |= WLAN_STA_PENDING_POLL; | |
4339d328 JM |
256 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA | |
257 | IEEE80211_STYPE_DATA, NULL, 0, | |
ff1d2767 JM |
258 | sta->addr, ap->tx_callback_poll); |
259 | } else { | |
260 | int deauth = sta->timeout_next == STA_DEAUTH; | |
8a9faf3c | 261 | __le16 resp; |
e174961c | 262 | PDEBUG(DEBUG_AP, "%s: sending %s info to STA %pM" |
ff1d2767 JM |
263 | "(last=%lu, jiffies=%lu)\n", |
264 | local->dev->name, | |
265 | deauth ? "deauthentication" : "disassociation", | |
e174961c | 266 | sta->addr, sta->last_rx, jiffies); |
ff1d2767 JM |
267 | |
268 | resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID : | |
269 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
4339d328 JM |
270 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT | |
271 | (deauth ? IEEE80211_STYPE_DEAUTH : | |
272 | IEEE80211_STYPE_DISASSOC), | |
ff1d2767 JM |
273 | (char *) &resp, 2, sta->addr, 0); |
274 | } | |
275 | ||
276 | if (sta->timeout_next == STA_DEAUTH) { | |
277 | if (sta->flags & WLAN_STA_PERM) { | |
e174961c | 278 | PDEBUG(DEBUG_AP, "%s: STA %pM" |
0795af57 JP |
279 | " would have been removed, " |
280 | "but it has 'perm' flag\n", | |
e174961c | 281 | local->dev->name, sta->addr); |
ff1d2767 JM |
282 | } else |
283 | ap_free_sta(ap, sta); | |
284 | return; | |
285 | } | |
286 | ||
287 | if (sta->timeout_next == STA_NULLFUNC) { | |
288 | sta->timeout_next = STA_DISASSOC; | |
289 | sta->timer.expires = jiffies + AP_DISASSOC_DELAY; | |
290 | } else { | |
291 | sta->timeout_next = STA_DEAUTH; | |
292 | sta->timer.expires = jiffies + AP_DEAUTH_DELAY; | |
293 | } | |
294 | ||
295 | add_timer(&sta->timer); | |
296 | } | |
297 | ||
298 | ||
299 | void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap, | |
300 | int resend) | |
301 | { | |
302 | u8 addr[ETH_ALEN]; | |
8a9faf3c | 303 | __le16 resp; |
ff1d2767 JM |
304 | int i; |
305 | ||
306 | PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name); | |
307 | memset(addr, 0xff, ETH_ALEN); | |
308 | ||
8a9faf3c | 309 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); |
ff1d2767 JM |
310 | |
311 | /* deauth message sent; try to resend it few times; the message is | |
312 | * broadcast, so it may be delayed until next DTIM; there is not much | |
313 | * else we can do at this point since the driver is going to be shut | |
314 | * down */ | |
315 | for (i = 0; i < 5; i++) { | |
4339d328 JM |
316 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
317 | IEEE80211_STYPE_DEAUTH, | |
ff1d2767 JM |
318 | (char *) &resp, 2, addr, 0); |
319 | ||
320 | if (!resend || ap->num_sta <= 0) | |
321 | return; | |
322 | ||
323 | mdelay(50); | |
324 | } | |
325 | } | |
326 | ||
327 | ||
328 | static int ap_control_proc_read(char *page, char **start, off_t off, | |
329 | int count, int *eof, void *data) | |
330 | { | |
331 | char *p = page; | |
332 | struct ap_data *ap = (struct ap_data *) data; | |
333 | char *policy_txt; | |
ff1d2767 JM |
334 | struct mac_entry *entry; |
335 | ||
336 | if (off != 0) { | |
337 | *eof = 1; | |
338 | return 0; | |
339 | } | |
340 | ||
341 | switch (ap->mac_restrictions.policy) { | |
342 | case MAC_POLICY_OPEN: | |
343 | policy_txt = "open"; | |
344 | break; | |
345 | case MAC_POLICY_ALLOW: | |
346 | policy_txt = "allow"; | |
347 | break; | |
348 | case MAC_POLICY_DENY: | |
349 | policy_txt = "deny"; | |
350 | break; | |
351 | default: | |
352 | policy_txt = "unknown"; | |
353 | break; | |
ee289b64 | 354 | } |
ff1d2767 JM |
355 | p += sprintf(p, "MAC policy: %s\n", policy_txt); |
356 | p += sprintf(p, "MAC entries: %u\n", ap->mac_restrictions.entries); | |
357 | p += sprintf(p, "MAC list:\n"); | |
358 | spin_lock_bh(&ap->mac_restrictions.lock); | |
c1505731 | 359 | list_for_each_entry(entry, &ap->mac_restrictions.mac_list, list) { |
ff1d2767 JM |
360 | if (p - page > PAGE_SIZE - 80) { |
361 | p += sprintf(p, "All entries did not fit one page.\n"); | |
362 | break; | |
363 | } | |
364 | ||
e174961c | 365 | p += sprintf(p, "%pM\n", entry->addr); |
ff1d2767 JM |
366 | } |
367 | spin_unlock_bh(&ap->mac_restrictions.lock); | |
368 | ||
369 | return (p - page); | |
370 | } | |
371 | ||
372 | ||
5fad5a2e | 373 | int ap_control_add_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
ff1d2767 JM |
374 | { |
375 | struct mac_entry *entry; | |
376 | ||
377 | entry = kmalloc(sizeof(struct mac_entry), GFP_KERNEL); | |
378 | if (entry == NULL) | |
379 | return -1; | |
380 | ||
381 | memcpy(entry->addr, mac, ETH_ALEN); | |
382 | ||
383 | spin_lock_bh(&mac_restrictions->lock); | |
384 | list_add_tail(&entry->list, &mac_restrictions->mac_list); | |
385 | mac_restrictions->entries++; | |
386 | spin_unlock_bh(&mac_restrictions->lock); | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | ||
5fad5a2e | 392 | int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
ff1d2767 JM |
393 | { |
394 | struct list_head *ptr; | |
395 | struct mac_entry *entry; | |
396 | ||
397 | spin_lock_bh(&mac_restrictions->lock); | |
398 | for (ptr = mac_restrictions->mac_list.next; | |
399 | ptr != &mac_restrictions->mac_list; ptr = ptr->next) { | |
400 | entry = list_entry(ptr, struct mac_entry, list); | |
401 | ||
402 | if (memcmp(entry->addr, mac, ETH_ALEN) == 0) { | |
403 | list_del(ptr); | |
404 | kfree(entry); | |
405 | mac_restrictions->entries--; | |
406 | spin_unlock_bh(&mac_restrictions->lock); | |
407 | return 0; | |
408 | } | |
409 | } | |
410 | spin_unlock_bh(&mac_restrictions->lock); | |
411 | return -1; | |
412 | } | |
413 | ||
414 | ||
415 | static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions, | |
416 | u8 *mac) | |
417 | { | |
ff1d2767 JM |
418 | struct mac_entry *entry; |
419 | int found = 0; | |
420 | ||
421 | if (mac_restrictions->policy == MAC_POLICY_OPEN) | |
422 | return 0; | |
423 | ||
424 | spin_lock_bh(&mac_restrictions->lock); | |
c1505731 | 425 | list_for_each_entry(entry, &mac_restrictions->mac_list, list) { |
ff1d2767 JM |
426 | if (memcmp(entry->addr, mac, ETH_ALEN) == 0) { |
427 | found = 1; | |
428 | break; | |
429 | } | |
430 | } | |
431 | spin_unlock_bh(&mac_restrictions->lock); | |
432 | ||
433 | if (mac_restrictions->policy == MAC_POLICY_ALLOW) | |
434 | return !found; | |
435 | else | |
436 | return found; | |
437 | } | |
438 | ||
439 | ||
5fad5a2e | 440 | void ap_control_flush_macs(struct mac_restrictions *mac_restrictions) |
ff1d2767 JM |
441 | { |
442 | struct list_head *ptr, *n; | |
443 | struct mac_entry *entry; | |
444 | ||
445 | if (mac_restrictions->entries == 0) | |
446 | return; | |
447 | ||
448 | spin_lock_bh(&mac_restrictions->lock); | |
449 | for (ptr = mac_restrictions->mac_list.next, n = ptr->next; | |
450 | ptr != &mac_restrictions->mac_list; | |
451 | ptr = n, n = ptr->next) { | |
452 | entry = list_entry(ptr, struct mac_entry, list); | |
453 | list_del(ptr); | |
454 | kfree(entry); | |
455 | } | |
456 | mac_restrictions->entries = 0; | |
457 | spin_unlock_bh(&mac_restrictions->lock); | |
458 | } | |
459 | ||
460 | ||
5fad5a2e | 461 | int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac) |
ff1d2767 JM |
462 | { |
463 | struct sta_info *sta; | |
8a9faf3c | 464 | __le16 resp; |
ff1d2767 JM |
465 | |
466 | spin_lock_bh(&ap->sta_table_lock); | |
467 | sta = ap_get_sta(ap, mac); | |
468 | if (sta) { | |
469 | ap_sta_hash_del(ap, sta); | |
470 | list_del(&sta->list); | |
471 | } | |
472 | spin_unlock_bh(&ap->sta_table_lock); | |
473 | ||
474 | if (!sta) | |
475 | return -EINVAL; | |
476 | ||
477 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); | |
4339d328 | 478 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH, |
ff1d2767 JM |
479 | (char *) &resp, 2, sta->addr, 0); |
480 | ||
481 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
482 | hostap_event_expired_sta(dev, sta); | |
483 | ||
484 | ap_free_sta(ap, sta); | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
489 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
490 | ||
491 | ||
5fad5a2e | 492 | void ap_control_kickall(struct ap_data *ap) |
ff1d2767 JM |
493 | { |
494 | struct list_head *ptr, *n; | |
495 | struct sta_info *sta; | |
74fae82c | 496 | |
ff1d2767 JM |
497 | spin_lock_bh(&ap->sta_table_lock); |
498 | for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list; | |
499 | ptr = n, n = ptr->next) { | |
500 | sta = list_entry(ptr, struct sta_info, list); | |
501 | ap_sta_hash_del(ap, sta); | |
502 | list_del(&sta->list); | |
503 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
504 | hostap_event_expired_sta(sta->local->dev, sta); | |
505 | ap_free_sta(ap, sta); | |
506 | } | |
507 | spin_unlock_bh(&ap->sta_table_lock); | |
508 | } | |
509 | ||
510 | ||
511 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
512 | ||
513 | #define PROC_LIMIT (PAGE_SIZE - 80) | |
514 | ||
515 | static int prism2_ap_proc_read(char *page, char **start, off_t off, | |
516 | int count, int *eof, void *data) | |
517 | { | |
518 | char *p = page; | |
519 | struct ap_data *ap = (struct ap_data *) data; | |
c1505731 | 520 | struct sta_info *sta; |
ff1d2767 JM |
521 | int i; |
522 | ||
523 | if (off > PROC_LIMIT) { | |
524 | *eof = 1; | |
525 | return 0; | |
526 | } | |
527 | ||
528 | p += sprintf(p, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n"); | |
529 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 530 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
531 | if (!sta->ap) |
532 | continue; | |
533 | ||
e174961c JB |
534 | p += sprintf(p, "%pM %d %d %d %d '", |
535 | sta->addr, | |
ff1d2767 JM |
536 | sta->u.ap.channel, sta->last_rx_signal, |
537 | sta->last_rx_silence, sta->last_rx_rate); | |
538 | for (i = 0; i < sta->u.ap.ssid_len; i++) | |
539 | p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 && | |
540 | sta->u.ap.ssid[i] < 127) ? | |
541 | "%c" : "<%02x>"), | |
542 | sta->u.ap.ssid[i]); | |
543 | p += sprintf(p, "'"); | |
544 | if (sta->capability & WLAN_CAPABILITY_ESS) | |
545 | p += sprintf(p, " [ESS]"); | |
546 | if (sta->capability & WLAN_CAPABILITY_IBSS) | |
547 | p += sprintf(p, " [IBSS]"); | |
548 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
549 | p += sprintf(p, " [WEP]"); | |
550 | p += sprintf(p, "\n"); | |
551 | ||
552 | if ((p - page) > PROC_LIMIT) { | |
553 | printk(KERN_DEBUG "hostap: ap proc did not fit\n"); | |
554 | break; | |
555 | } | |
556 | } | |
557 | spin_unlock_bh(&ap->sta_table_lock); | |
558 | ||
559 | if ((p - page) <= off) { | |
560 | *eof = 1; | |
561 | return 0; | |
562 | } | |
563 | ||
564 | *start = page + off; | |
565 | ||
566 | return (p - page - off); | |
567 | } | |
568 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
569 | ||
570 | ||
571 | void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver) | |
572 | { | |
573 | if (!ap) | |
574 | return; | |
575 | ||
576 | if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) { | |
577 | PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - " | |
578 | "firmware upgrade recommended\n"); | |
579 | ap->nullfunc_ack = 1; | |
580 | } else | |
581 | ap->nullfunc_ack = 0; | |
582 | ||
583 | if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) { | |
584 | printk(KERN_WARNING "%s: Warning: secondary station firmware " | |
585 | "version 1.4.2 does not seem to work in Host AP mode\n", | |
586 | ap->local->dev->name); | |
587 | } | |
588 | } | |
589 | ||
590 | ||
591 | /* Called only as a tasklet (software IRQ) */ | |
592 | static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data) | |
593 | { | |
594 | struct ap_data *ap = data; | |
1ea893fd | 595 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
596 | |
597 | if (!ap->local->hostapd || !ap->local->apdev) { | |
598 | dev_kfree_skb(skb); | |
599 | return; | |
600 | } | |
601 | ||
ff1d2767 JM |
602 | /* Pass the TX callback frame to the hostapd; use 802.11 header version |
603 | * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */ | |
604 | ||
1ea893fd DW |
605 | hdr = (struct ieee80211_hdr *) skb->data; |
606 | hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_VERS); | |
607 | hdr->frame_control |= cpu_to_le16(ok ? BIT(1) : BIT(0)); | |
ff1d2767 JM |
608 | |
609 | skb->dev = ap->local->apdev; | |
1ea893fd | 610 | skb_pull(skb, hostap_80211_get_hdrlen(hdr->frame_control)); |
ff1d2767 | 611 | skb->pkt_type = PACKET_OTHERHOST; |
c1b4aa3f | 612 | skb->protocol = cpu_to_be16(ETH_P_802_2); |
ff1d2767 JM |
613 | memset(skb->cb, 0, sizeof(skb->cb)); |
614 | netif_rx(skb); | |
615 | } | |
616 | ||
617 | ||
618 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
619 | /* Called only as a tasklet (software IRQ) */ | |
620 | static void hostap_ap_tx_cb_auth(struct sk_buff *skb, int ok, void *data) | |
621 | { | |
622 | struct ap_data *ap = data; | |
623 | struct net_device *dev = ap->local->dev; | |
1ea893fd DW |
624 | struct ieee80211_hdr *hdr; |
625 | u16 auth_alg, auth_transaction, status; | |
8a9faf3c | 626 | __le16 *pos; |
ff1d2767 JM |
627 | struct sta_info *sta = NULL; |
628 | char *txt = NULL; | |
629 | ||
630 | if (ap->local->hostapd) { | |
631 | dev_kfree_skb(skb); | |
632 | return; | |
633 | } | |
634 | ||
1ea893fd DW |
635 | hdr = (struct ieee80211_hdr *) skb->data; |
636 | if (!ieee80211_is_auth(hdr->frame_control) || | |
ff1d2767 JM |
637 | skb->len < IEEE80211_MGMT_HDR_LEN + 6) { |
638 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_auth received invalid " | |
639 | "frame\n", dev->name); | |
640 | dev_kfree_skb(skb); | |
641 | return; | |
642 | } | |
643 | ||
8a9faf3c | 644 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
645 | auth_alg = le16_to_cpu(*pos++); |
646 | auth_transaction = le16_to_cpu(*pos++); | |
647 | status = le16_to_cpu(*pos++); | |
648 | ||
649 | if (!ok) { | |
650 | txt = "frame was not ACKed"; | |
651 | goto done; | |
652 | } | |
653 | ||
654 | spin_lock(&ap->sta_table_lock); | |
655 | sta = ap_get_sta(ap, hdr->addr1); | |
656 | if (sta) | |
657 | atomic_inc(&sta->users); | |
658 | spin_unlock(&ap->sta_table_lock); | |
659 | ||
660 | if (!sta) { | |
661 | txt = "STA not found"; | |
662 | goto done; | |
663 | } | |
664 | ||
665 | if (status == WLAN_STATUS_SUCCESS && | |
666 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || | |
667 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { | |
668 | txt = "STA authenticated"; | |
669 | sta->flags |= WLAN_STA_AUTH; | |
670 | sta->last_auth = jiffies; | |
671 | } else if (status != WLAN_STATUS_SUCCESS) | |
672 | txt = "authentication failed"; | |
673 | ||
674 | done: | |
675 | if (sta) | |
676 | atomic_dec(&sta->users); | |
677 | if (txt) { | |
e174961c | 678 | PDEBUG(DEBUG_AP, "%s: %pM auth_cb - alg=%d " |
0795af57 | 679 | "trans#=%d status=%d - %s\n", |
e174961c | 680 | dev->name, hdr->addr1, |
21f644f3 | 681 | auth_alg, auth_transaction, status, txt); |
ff1d2767 JM |
682 | } |
683 | dev_kfree_skb(skb); | |
684 | } | |
685 | ||
686 | ||
687 | /* Called only as a tasklet (software IRQ) */ | |
688 | static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data) | |
689 | { | |
690 | struct ap_data *ap = data; | |
691 | struct net_device *dev = ap->local->dev; | |
1ea893fd | 692 | struct ieee80211_hdr *hdr; |
1baf8a90 | 693 | u16 status; |
8a9faf3c | 694 | __le16 *pos; |
ff1d2767 JM |
695 | struct sta_info *sta = NULL; |
696 | char *txt = NULL; | |
697 | ||
698 | if (ap->local->hostapd) { | |
699 | dev_kfree_skb(skb); | |
700 | return; | |
701 | } | |
702 | ||
1ea893fd | 703 | hdr = (struct ieee80211_hdr *) skb->data; |
1ea893fd DW |
704 | if ((!ieee80211_is_assoc_resp(hdr->frame_control) && |
705 | !ieee80211_is_reassoc_resp(hdr->frame_control)) || | |
ff1d2767 JM |
706 | skb->len < IEEE80211_MGMT_HDR_LEN + 4) { |
707 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid " | |
708 | "frame\n", dev->name); | |
709 | dev_kfree_skb(skb); | |
710 | return; | |
711 | } | |
712 | ||
713 | if (!ok) { | |
714 | txt = "frame was not ACKed"; | |
715 | goto done; | |
716 | } | |
717 | ||
718 | spin_lock(&ap->sta_table_lock); | |
719 | sta = ap_get_sta(ap, hdr->addr1); | |
720 | if (sta) | |
721 | atomic_inc(&sta->users); | |
722 | spin_unlock(&ap->sta_table_lock); | |
723 | ||
724 | if (!sta) { | |
725 | txt = "STA not found"; | |
726 | goto done; | |
727 | } | |
728 | ||
8a9faf3c | 729 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
730 | pos++; |
731 | status = le16_to_cpu(*pos++); | |
732 | if (status == WLAN_STATUS_SUCCESS) { | |
733 | if (!(sta->flags & WLAN_STA_ASSOC)) | |
734 | hostap_event_new_sta(dev, sta); | |
735 | txt = "STA associated"; | |
736 | sta->flags |= WLAN_STA_ASSOC; | |
737 | sta->last_assoc = jiffies; | |
738 | } else | |
739 | txt = "association failed"; | |
740 | ||
741 | done: | |
742 | if (sta) | |
743 | atomic_dec(&sta->users); | |
744 | if (txt) { | |
e174961c JB |
745 | PDEBUG(DEBUG_AP, "%s: %pM assoc_cb - %s\n", |
746 | dev->name, hdr->addr1, txt); | |
ff1d2767 JM |
747 | } |
748 | dev_kfree_skb(skb); | |
749 | } | |
750 | ||
751 | /* Called only as a tasklet (software IRQ); TX callback for poll frames used | |
752 | * in verifying whether the STA is still present. */ | |
753 | static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data) | |
754 | { | |
755 | struct ap_data *ap = data; | |
1ea893fd | 756 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
757 | struct sta_info *sta; |
758 | ||
759 | if (skb->len < 24) | |
760 | goto fail; | |
1ea893fd | 761 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
762 | if (ok) { |
763 | spin_lock(&ap->sta_table_lock); | |
764 | sta = ap_get_sta(ap, hdr->addr1); | |
765 | if (sta) | |
766 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
767 | spin_unlock(&ap->sta_table_lock); | |
768 | } else { | |
e174961c JB |
769 | PDEBUG(DEBUG_AP, |
770 | "%s: STA %pM did not ACK activity poll frame\n", | |
771 | ap->local->dev->name, hdr->addr1); | |
ff1d2767 JM |
772 | } |
773 | ||
774 | fail: | |
775 | dev_kfree_skb(skb); | |
776 | } | |
777 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
778 | ||
779 | ||
780 | void hostap_init_data(local_info_t *local) | |
781 | { | |
782 | struct ap_data *ap = local->ap; | |
783 | ||
784 | if (ap == NULL) { | |
785 | printk(KERN_WARNING "hostap_init_data: ap == NULL\n"); | |
786 | return; | |
787 | } | |
788 | memset(ap, 0, sizeof(struct ap_data)); | |
789 | ap->local = local; | |
790 | ||
791 | ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx); | |
792 | ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx); | |
793 | ap->max_inactivity = | |
794 | GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ; | |
795 | ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx); | |
796 | ||
797 | spin_lock_init(&ap->sta_table_lock); | |
798 | INIT_LIST_HEAD(&ap->sta_list); | |
799 | ||
800 | /* Initialize task queue structure for AP management */ | |
c4028958 | 801 | INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue); |
ff1d2767 JM |
802 | |
803 | ap->tx_callback_idx = | |
804 | hostap_tx_callback_register(local, hostap_ap_tx_cb, ap); | |
805 | if (ap->tx_callback_idx == 0) | |
806 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
807 | "AP\n", local->dev->name); | |
808 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 809 | INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue); |
ff1d2767 JM |
810 | |
811 | ap->tx_callback_auth = | |
812 | hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap); | |
813 | ap->tx_callback_assoc = | |
814 | hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap); | |
815 | ap->tx_callback_poll = | |
816 | hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap); | |
817 | if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 || | |
818 | ap->tx_callback_poll == 0) | |
819 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
820 | "AP\n", local->dev->name); | |
821 | ||
822 | spin_lock_init(&ap->mac_restrictions.lock); | |
823 | INIT_LIST_HEAD(&ap->mac_restrictions.mac_list); | |
824 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
825 | ||
826 | ap->initialized = 1; | |
827 | } | |
828 | ||
829 | ||
830 | void hostap_init_ap_proc(local_info_t *local) | |
831 | { | |
832 | struct ap_data *ap = local->ap; | |
833 | ||
834 | ap->proc = local->proc; | |
835 | if (ap->proc == NULL) | |
836 | return; | |
837 | ||
838 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
839 | create_proc_read_entry("ap_debug", 0, ap->proc, | |
840 | ap_debug_proc_read, ap); | |
841 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
842 | ||
843 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
844 | create_proc_read_entry("ap_control", 0, ap->proc, | |
845 | ap_control_proc_read, ap); | |
846 | create_proc_read_entry("ap", 0, ap->proc, | |
847 | prism2_ap_proc_read, ap); | |
848 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
849 | ||
850 | } | |
851 | ||
852 | ||
853 | void hostap_free_data(struct ap_data *ap) | |
854 | { | |
c1505731 | 855 | struct sta_info *n, *sta; |
ff1d2767 JM |
856 | |
857 | if (ap == NULL || !ap->initialized) { | |
858 | printk(KERN_DEBUG "hostap_free_data: ap has not yet been " | |
859 | "initialized - skip resource freeing\n"); | |
860 | return; | |
861 | } | |
862 | ||
16359533 TH |
863 | flush_work_sync(&ap->add_sta_proc_queue); |
864 | ||
ff1d2767 | 865 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
16359533 | 866 | flush_work_sync(&ap->wds_oper_queue); |
ff1d2767 JM |
867 | if (ap->crypt) |
868 | ap->crypt->deinit(ap->crypt_priv); | |
869 | ap->crypt = ap->crypt_priv = NULL; | |
870 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
871 | ||
c1505731 | 872 | list_for_each_entry_safe(sta, n, &ap->sta_list, list) { |
ff1d2767 JM |
873 | ap_sta_hash_del(ap, sta); |
874 | list_del(&sta->list); | |
875 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
876 | hostap_event_expired_sta(sta->local->dev, sta); | |
877 | ap_free_sta(ap, sta); | |
878 | } | |
879 | ||
880 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
881 | if (ap->proc != NULL) { | |
882 | remove_proc_entry("ap_debug", ap->proc); | |
883 | } | |
884 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
885 | ||
886 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
887 | if (ap->proc != NULL) { | |
888 | remove_proc_entry("ap", ap->proc); | |
889 | remove_proc_entry("ap_control", ap->proc); | |
890 | } | |
891 | ap_control_flush_macs(&ap->mac_restrictions); | |
892 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
893 | ||
894 | ap->initialized = 0; | |
895 | } | |
896 | ||
897 | ||
898 | /* caller should have mutex for AP STA list handling */ | |
899 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta) | |
900 | { | |
901 | struct sta_info *s; | |
902 | ||
903 | s = ap->sta_hash[STA_HASH(sta)]; | |
904 | while (s != NULL && memcmp(s->addr, sta, ETH_ALEN) != 0) | |
905 | s = s->hnext; | |
906 | return s; | |
907 | } | |
908 | ||
909 | ||
910 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
911 | ||
912 | /* Called from timer handler and from scheduled AP queue handlers */ | |
913 | static void prism2_send_mgmt(struct net_device *dev, | |
4339d328 | 914 | u16 type_subtype, char *body, |
ff1d2767 JM |
915 | int body_len, u8 *addr, u16 tx_cb_idx) |
916 | { | |
917 | struct hostap_interface *iface; | |
918 | local_info_t *local; | |
1ea893fd | 919 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
920 | u16 fc; |
921 | struct sk_buff *skb; | |
922 | struct hostap_skb_tx_data *meta; | |
923 | int hdrlen; | |
924 | ||
925 | iface = netdev_priv(dev); | |
926 | local = iface->local; | |
927 | dev = local->dev; /* always use master radio device */ | |
928 | iface = netdev_priv(dev); | |
929 | ||
930 | if (!(dev->flags & IFF_UP)) { | |
931 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - " | |
932 | "cannot send frame\n", dev->name); | |
933 | return; | |
934 | } | |
935 | ||
936 | skb = dev_alloc_skb(sizeof(*hdr) + body_len); | |
937 | if (skb == NULL) { | |
938 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate " | |
939 | "skb\n", dev->name); | |
940 | return; | |
941 | } | |
942 | ||
4339d328 | 943 | fc = type_subtype; |
1ea893fd DW |
944 | hdrlen = hostap_80211_get_hdrlen(cpu_to_le16(type_subtype)); |
945 | hdr = (struct ieee80211_hdr *) skb_put(skb, hdrlen); | |
ff1d2767 JM |
946 | if (body) |
947 | memcpy(skb_put(skb, body_len), body, body_len); | |
948 | ||
949 | memset(hdr, 0, hdrlen); | |
950 | ||
951 | /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11 | |
952 | * tx_control instead of using local->tx_control */ | |
953 | ||
954 | ||
955 | memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */ | |
1ea893fd | 956 | if (ieee80211_is_data(hdr->frame_control)) { |
b2f4a2e3 | 957 | fc |= IEEE80211_FCTL_FROMDS; |
ff1d2767 JM |
958 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */ |
959 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */ | |
1ea893fd | 960 | } else if (ieee80211_is_ctl(hdr->frame_control)) { |
ff1d2767 JM |
961 | /* control:ACK does not have addr2 or addr3 */ |
962 | memset(hdr->addr2, 0, ETH_ALEN); | |
963 | memset(hdr->addr3, 0, ETH_ALEN); | |
964 | } else { | |
965 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */ | |
966 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */ | |
967 | } | |
968 | ||
1ea893fd | 969 | hdr->frame_control = cpu_to_le16(fc); |
ff1d2767 JM |
970 | |
971 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
972 | memset(meta, 0, sizeof(*meta)); | |
973 | meta->magic = HOSTAP_SKB_TX_DATA_MAGIC; | |
974 | meta->iface = iface; | |
975 | meta->tx_cb_idx = tx_cb_idx; | |
976 | ||
977 | skb->dev = dev; | |
459a98ed | 978 | skb_reset_mac_header(skb); |
c1d2bbe1 | 979 | skb_reset_network_header(skb); |
ff1d2767 JM |
980 | dev_queue_xmit(skb); |
981 | } | |
982 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
983 | ||
984 | ||
985 | static int prism2_sta_proc_read(char *page, char **start, off_t off, | |
986 | int count, int *eof, void *data) | |
987 | { | |
988 | char *p = page; | |
989 | struct sta_info *sta = (struct sta_info *) data; | |
990 | int i; | |
991 | ||
992 | /* FIX: possible race condition.. the STA data could have just expired, | |
993 | * but proc entry was still here so that the read could have started; | |
994 | * some locking should be done here.. */ | |
995 | ||
996 | if (off != 0) { | |
997 | *eof = 1; | |
998 | return 0; | |
999 | } | |
1000 | ||
e174961c | 1001 | p += sprintf(p, "%s=%pM\nusers=%d\naid=%d\n" |
ff1d2767 JM |
1002 | "flags=0x%04x%s%s%s%s%s%s%s\n" |
1003 | "capability=0x%02x\nlisten_interval=%d\nsupported_rates=", | |
1004 | sta->ap ? "AP" : "STA", | |
e174961c | 1005 | sta->addr, atomic_read(&sta->users), sta->aid, |
ff1d2767 JM |
1006 | sta->flags, |
1007 | sta->flags & WLAN_STA_AUTH ? " AUTH" : "", | |
1008 | sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "", | |
1009 | sta->flags & WLAN_STA_PS ? " PS" : "", | |
1010 | sta->flags & WLAN_STA_TIM ? " TIM" : "", | |
1011 | sta->flags & WLAN_STA_PERM ? " PERM" : "", | |
1012 | sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "", | |
1013 | sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "", | |
1014 | sta->capability, sta->listen_interval); | |
1015 | /* supported_rates: 500 kbit/s units with msb ignored */ | |
1016 | for (i = 0; i < sizeof(sta->supported_rates); i++) | |
1017 | if (sta->supported_rates[i] != 0) | |
1018 | p += sprintf(p, "%d%sMbps ", | |
1019 | (sta->supported_rates[i] & 0x7f) / 2, | |
1020 | sta->supported_rates[i] & 1 ? ".5" : ""); | |
1021 | p += sprintf(p, "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n" | |
1022 | "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n" | |
1023 | "tx_packets=%lu\n" | |
1024 | "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n" | |
1025 | "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n" | |
1026 | "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n" | |
1027 | "tx[11M]=%d\n" | |
1028 | "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n", | |
1029 | jiffies, sta->last_auth, sta->last_assoc, sta->last_rx, | |
1030 | sta->last_tx, | |
1031 | sta->rx_packets, sta->tx_packets, sta->rx_bytes, | |
1032 | sta->tx_bytes, skb_queue_len(&sta->tx_buf), | |
1033 | sta->last_rx_silence, | |
1034 | sta->last_rx_signal, sta->last_rx_rate / 10, | |
1035 | sta->last_rx_rate % 10 ? ".5" : "", | |
1036 | sta->tx_rate, sta->tx_count[0], sta->tx_count[1], | |
1037 | sta->tx_count[2], sta->tx_count[3], sta->rx_count[0], | |
1038 | sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]); | |
1039 | if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats) | |
1040 | p = sta->crypt->ops->print_stats(p, sta->crypt->priv); | |
1041 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1042 | if (sta->ap) { | |
1043 | if (sta->u.ap.channel >= 0) | |
1044 | p += sprintf(p, "channel=%d\n", sta->u.ap.channel); | |
1045 | p += sprintf(p, "ssid="); | |
1046 | for (i = 0; i < sta->u.ap.ssid_len; i++) | |
1047 | p += sprintf(p, ((sta->u.ap.ssid[i] >= 32 && | |
1048 | sta->u.ap.ssid[i] < 127) ? | |
1049 | "%c" : "<%02x>"), | |
1050 | sta->u.ap.ssid[i]); | |
1051 | p += sprintf(p, "\n"); | |
1052 | } | |
1053 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1054 | ||
1055 | return (p - page); | |
1056 | } | |
1057 | ||
1058 | ||
c4028958 | 1059 | static void handle_add_proc_queue(struct work_struct *work) |
ff1d2767 | 1060 | { |
c4028958 DH |
1061 | struct ap_data *ap = container_of(work, struct ap_data, |
1062 | add_sta_proc_queue); | |
ff1d2767 JM |
1063 | struct sta_info *sta; |
1064 | char name[20]; | |
1065 | struct add_sta_proc_data *entry, *prev; | |
1066 | ||
1067 | entry = ap->add_sta_proc_entries; | |
1068 | ap->add_sta_proc_entries = NULL; | |
1069 | ||
1070 | while (entry) { | |
1071 | spin_lock_bh(&ap->sta_table_lock); | |
1072 | sta = ap_get_sta(ap, entry->addr); | |
1073 | if (sta) | |
1074 | atomic_inc(&sta->users); | |
1075 | spin_unlock_bh(&ap->sta_table_lock); | |
1076 | ||
1077 | if (sta) { | |
e174961c | 1078 | sprintf(name, "%pM", sta->addr); |
ff1d2767 JM |
1079 | sta->proc = create_proc_read_entry( |
1080 | name, 0, ap->proc, | |
1081 | prism2_sta_proc_read, sta); | |
1082 | ||
1083 | atomic_dec(&sta->users); | |
1084 | } | |
1085 | ||
1086 | prev = entry; | |
1087 | entry = entry->next; | |
1088 | kfree(prev); | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | ||
1093 | static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr) | |
1094 | { | |
1095 | struct sta_info *sta; | |
1096 | ||
b0471bb7 | 1097 | sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC); |
ff1d2767 JM |
1098 | if (sta == NULL) { |
1099 | PDEBUG(DEBUG_AP, "AP: kmalloc failed\n"); | |
1100 | return NULL; | |
1101 | } | |
1102 | ||
1103 | /* initialize STA info data */ | |
ff1d2767 JM |
1104 | sta->local = ap->local; |
1105 | skb_queue_head_init(&sta->tx_buf); | |
1106 | memcpy(sta->addr, addr, ETH_ALEN); | |
1107 | ||
1108 | atomic_inc(&sta->users); | |
1109 | spin_lock_bh(&ap->sta_table_lock); | |
1110 | list_add(&sta->list, &ap->sta_list); | |
1111 | ap->num_sta++; | |
1112 | ap_sta_hash_add(ap, sta); | |
1113 | spin_unlock_bh(&ap->sta_table_lock); | |
1114 | ||
1115 | if (ap->proc) { | |
1116 | struct add_sta_proc_data *entry; | |
1117 | /* schedule a non-interrupt context process to add a procfs | |
1118 | * entry for the STA since procfs code use GFP_KERNEL */ | |
1119 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
1120 | if (entry) { | |
1121 | memcpy(entry->addr, sta->addr, ETH_ALEN); | |
1122 | entry->next = ap->add_sta_proc_entries; | |
1123 | ap->add_sta_proc_entries = entry; | |
1124 | schedule_work(&ap->add_sta_proc_queue); | |
1125 | } else | |
1126 | printk(KERN_DEBUG "Failed to add STA proc data\n"); | |
1127 | } | |
1128 | ||
1129 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1130 | init_timer(&sta->timer); | |
1131 | sta->timer.expires = jiffies + ap->max_inactivity; | |
1132 | sta->timer.data = (unsigned long) sta; | |
1133 | sta->timer.function = ap_handle_timer; | |
1134 | if (!ap->local->hostapd) | |
1135 | add_timer(&sta->timer); | |
1136 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1137 | ||
1138 | return sta; | |
1139 | } | |
1140 | ||
1141 | ||
1142 | static int ap_tx_rate_ok(int rateidx, struct sta_info *sta, | |
1143 | local_info_t *local) | |
1144 | { | |
1145 | if (rateidx > sta->tx_max_rate || | |
1146 | !(sta->tx_supp_rates & (1 << rateidx))) | |
1147 | return 0; | |
1148 | ||
1149 | if (local->tx_rate_control != 0 && | |
1150 | !(local->tx_rate_control & (1 << rateidx))) | |
1151 | return 0; | |
1152 | ||
1153 | return 1; | |
1154 | } | |
1155 | ||
1156 | ||
1157 | static void prism2_check_tx_rates(struct sta_info *sta) | |
1158 | { | |
1159 | int i; | |
1160 | ||
1161 | sta->tx_supp_rates = 0; | |
1162 | for (i = 0; i < sizeof(sta->supported_rates); i++) { | |
1163 | if ((sta->supported_rates[i] & 0x7f) == 2) | |
1164 | sta->tx_supp_rates |= WLAN_RATE_1M; | |
1165 | if ((sta->supported_rates[i] & 0x7f) == 4) | |
1166 | sta->tx_supp_rates |= WLAN_RATE_2M; | |
1167 | if ((sta->supported_rates[i] & 0x7f) == 11) | |
1168 | sta->tx_supp_rates |= WLAN_RATE_5M5; | |
1169 | if ((sta->supported_rates[i] & 0x7f) == 22) | |
1170 | sta->tx_supp_rates |= WLAN_RATE_11M; | |
1171 | } | |
1172 | sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0; | |
1173 | if (sta->tx_supp_rates & WLAN_RATE_1M) { | |
1174 | sta->tx_max_rate = 0; | |
1175 | if (ap_tx_rate_ok(0, sta, sta->local)) { | |
1176 | sta->tx_rate = 10; | |
1177 | sta->tx_rate_idx = 0; | |
1178 | } | |
1179 | } | |
1180 | if (sta->tx_supp_rates & WLAN_RATE_2M) { | |
1181 | sta->tx_max_rate = 1; | |
1182 | if (ap_tx_rate_ok(1, sta, sta->local)) { | |
1183 | sta->tx_rate = 20; | |
1184 | sta->tx_rate_idx = 1; | |
1185 | } | |
1186 | } | |
1187 | if (sta->tx_supp_rates & WLAN_RATE_5M5) { | |
1188 | sta->tx_max_rate = 2; | |
1189 | if (ap_tx_rate_ok(2, sta, sta->local)) { | |
1190 | sta->tx_rate = 55; | |
1191 | sta->tx_rate_idx = 2; | |
1192 | } | |
1193 | } | |
1194 | if (sta->tx_supp_rates & WLAN_RATE_11M) { | |
1195 | sta->tx_max_rate = 3; | |
1196 | if (ap_tx_rate_ok(3, sta, sta->local)) { | |
1197 | sta->tx_rate = 110; | |
1198 | sta->tx_rate_idx = 3; | |
1199 | } | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | ||
1204 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1205 | ||
1206 | static void ap_crypt_init(struct ap_data *ap) | |
1207 | { | |
274bfb8d | 1208 | ap->crypt = lib80211_get_crypto_ops("WEP"); |
ff1d2767 JM |
1209 | |
1210 | if (ap->crypt) { | |
1211 | if (ap->crypt->init) { | |
1212 | ap->crypt_priv = ap->crypt->init(0); | |
1213 | if (ap->crypt_priv == NULL) | |
1214 | ap->crypt = NULL; | |
1215 | else { | |
1216 | u8 key[WEP_KEY_LEN]; | |
1217 | get_random_bytes(key, WEP_KEY_LEN); | |
1218 | ap->crypt->set_key(key, WEP_KEY_LEN, NULL, | |
1219 | ap->crypt_priv); | |
1220 | } | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | if (ap->crypt == NULL) { | |
1225 | printk(KERN_WARNING "AP could not initialize WEP: load module " | |
274bfb8d | 1226 | "lib80211_crypt_wep.ko\n"); |
ff1d2767 JM |
1227 | } |
1228 | } | |
1229 | ||
1230 | ||
1231 | /* Generate challenge data for shared key authentication. IEEE 802.11 specifies | |
25d1fbfd | 1232 | * that WEP algorithm is used for generating challenge. This should be unique, |
ff1d2767 JM |
1233 | * but otherwise there is not really need for randomness etc. Initialize WEP |
1234 | * with pseudo random key and then use increasing IV to get unique challenge | |
1235 | * streams. | |
1236 | * | |
1237 | * Called only as a scheduled task for pending AP frames. | |
1238 | */ | |
1239 | static char * ap_auth_make_challenge(struct ap_data *ap) | |
1240 | { | |
1241 | char *tmpbuf; | |
1242 | struct sk_buff *skb; | |
1243 | ||
1244 | if (ap->crypt == NULL) { | |
1245 | ap_crypt_init(ap); | |
1246 | if (ap->crypt == NULL) | |
1247 | return NULL; | |
1248 | } | |
1249 | ||
5cbded58 | 1250 | tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC); |
ff1d2767 JM |
1251 | if (tmpbuf == NULL) { |
1252 | PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n"); | |
1253 | return NULL; | |
1254 | } | |
1255 | ||
1256 | skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN + | |
5bfc819b JK |
1257 | ap->crypt->extra_mpdu_prefix_len + |
1258 | ap->crypt->extra_mpdu_postfix_len); | |
ff1d2767 JM |
1259 | if (skb == NULL) { |
1260 | kfree(tmpbuf); | |
1261 | return NULL; | |
1262 | } | |
1263 | ||
5bfc819b | 1264 | skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len); |
ff1d2767 JM |
1265 | memset(skb_put(skb, WLAN_AUTH_CHALLENGE_LEN), 0, |
1266 | WLAN_AUTH_CHALLENGE_LEN); | |
1267 | if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) { | |
1268 | dev_kfree_skb(skb); | |
1269 | kfree(tmpbuf); | |
1270 | return NULL; | |
1271 | } | |
1272 | ||
d626f62b ACM |
1273 | skb_copy_from_linear_data_offset(skb, ap->crypt->extra_mpdu_prefix_len, |
1274 | tmpbuf, WLAN_AUTH_CHALLENGE_LEN); | |
ff1d2767 JM |
1275 | dev_kfree_skb(skb); |
1276 | ||
1277 | return tmpbuf; | |
1278 | } | |
1279 | ||
1280 | ||
1281 | /* Called only as a scheduled task for pending AP frames. */ | |
1282 | static void handle_authen(local_info_t *local, struct sk_buff *skb, | |
1283 | struct hostap_80211_rx_status *rx_stats) | |
1284 | { | |
1285 | struct net_device *dev = local->dev; | |
1ea893fd | 1286 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1287 | size_t hdrlen; |
1288 | struct ap_data *ap = local->ap; | |
1289 | char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL; | |
1290 | int len, olen; | |
8a9faf3c AV |
1291 | u16 auth_alg, auth_transaction, status_code; |
1292 | __le16 *pos; | |
1ea893fd | 1293 | u16 resp = WLAN_STATUS_SUCCESS; |
ff1d2767 | 1294 | struct sta_info *sta = NULL; |
274bfb8d | 1295 | struct lib80211_crypt_data *crypt; |
ff1d2767 JM |
1296 | char *txt = ""; |
1297 | ||
1298 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1299 | ||
1ea893fd | 1300 | hdrlen = hostap_80211_get_hdrlen(hdr->frame_control); |
ff1d2767 JM |
1301 | |
1302 | if (len < 6) { | |
1303 | PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload " | |
e174961c | 1304 | "(len=%d) from %pM\n", dev->name, len, hdr->addr2); |
ff1d2767 JM |
1305 | return; |
1306 | } | |
1307 | ||
1308 | spin_lock_bh(&local->ap->sta_table_lock); | |
1309 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1310 | if (sta) | |
1311 | atomic_inc(&sta->users); | |
1312 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1313 | ||
1314 | if (sta && sta->crypt) | |
1315 | crypt = sta->crypt; | |
1316 | else { | |
1317 | int idx = 0; | |
1318 | if (skb->len >= hdrlen + 3) | |
1319 | idx = skb->data[hdrlen + 3] >> 6; | |
274bfb8d | 1320 | crypt = local->crypt_info.crypt[idx]; |
ff1d2767 JM |
1321 | } |
1322 | ||
8a9faf3c | 1323 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
1324 | auth_alg = __le16_to_cpu(*pos); |
1325 | pos++; | |
1326 | auth_transaction = __le16_to_cpu(*pos); | |
1327 | pos++; | |
1328 | status_code = __le16_to_cpu(*pos); | |
1329 | pos++; | |
1330 | ||
1331 | if (memcmp(dev->dev_addr, hdr->addr2, ETH_ALEN) == 0 || | |
1332 | ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) { | |
1333 | txt = "authentication denied"; | |
1334 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1335 | goto fail; | |
1336 | } | |
1337 | ||
1338 | if (((local->auth_algs & PRISM2_AUTH_OPEN) && | |
1339 | auth_alg == WLAN_AUTH_OPEN) || | |
1340 | ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) && | |
1341 | crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) { | |
1342 | } else { | |
1343 | txt = "unsupported algorithm"; | |
1344 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
1345 | goto fail; | |
1346 | } | |
1347 | ||
1348 | if (len >= 8) { | |
1349 | u8 *u = (u8 *) pos; | |
1350 | if (*u == WLAN_EID_CHALLENGE) { | |
1351 | if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) { | |
1352 | txt = "invalid challenge len"; | |
1353 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1354 | goto fail; | |
1355 | } | |
1356 | if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) { | |
1357 | txt = "challenge underflow"; | |
1358 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1359 | goto fail; | |
1360 | } | |
1361 | challenge = (char *) (u + 2); | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | if (sta && sta->ap) { | |
1366 | if (time_after(jiffies, sta->u.ap.last_beacon + | |
1367 | (10 * sta->listen_interval * HZ) / 1024)) { | |
1368 | PDEBUG(DEBUG_AP, "%s: no beacons received for a while," | |
e174961c JB |
1369 | " assuming AP %pM is now STA\n", |
1370 | dev->name, sta->addr); | |
ff1d2767 JM |
1371 | sta->ap = 0; |
1372 | sta->flags = 0; | |
1373 | sta->u.sta.challenge = NULL; | |
1374 | } else { | |
1375 | txt = "AP trying to authenticate?"; | |
1376 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1377 | goto fail; | |
1378 | } | |
1379 | } | |
1380 | ||
1381 | if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) || | |
1382 | (auth_alg == WLAN_AUTH_SHARED_KEY && | |
1383 | (auth_transaction == 1 || | |
1384 | (auth_transaction == 3 && sta != NULL && | |
1385 | sta->u.sta.challenge != NULL)))) { | |
1386 | } else { | |
1387 | txt = "unknown authentication transaction number"; | |
1388 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; | |
1389 | goto fail; | |
1390 | } | |
1391 | ||
1392 | if (sta == NULL) { | |
1393 | txt = "new STA"; | |
1394 | ||
1395 | if (local->ap->num_sta >= MAX_STA_COUNT) { | |
1396 | /* FIX: might try to remove some old STAs first? */ | |
1397 | txt = "no more room for new STAs"; | |
1398 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1399 | goto fail; | |
1400 | } | |
1401 | ||
1402 | sta = ap_add_sta(local->ap, hdr->addr2); | |
1403 | if (sta == NULL) { | |
1404 | txt = "ap_add_sta failed"; | |
1405 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1406 | goto fail; | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | switch (auth_alg) { | |
1411 | case WLAN_AUTH_OPEN: | |
1412 | txt = "authOK"; | |
1413 | /* IEEE 802.11 standard is not completely clear about | |
1414 | * whether STA is considered authenticated after | |
1415 | * authentication OK frame has been send or after it | |
1416 | * has been ACKed. In order to reduce interoperability | |
1417 | * issues, mark the STA authenticated before ACK. */ | |
1418 | sta->flags |= WLAN_STA_AUTH; | |
1419 | break; | |
1420 | ||
1421 | case WLAN_AUTH_SHARED_KEY: | |
1422 | if (auth_transaction == 1) { | |
1423 | if (sta->u.sta.challenge == NULL) { | |
1424 | sta->u.sta.challenge = | |
1425 | ap_auth_make_challenge(local->ap); | |
1426 | if (sta->u.sta.challenge == NULL) { | |
1427 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1428 | goto fail; | |
1429 | } | |
1430 | } | |
1431 | } else { | |
1432 | if (sta->u.sta.challenge == NULL || | |
1433 | challenge == NULL || | |
1434 | memcmp(sta->u.sta.challenge, challenge, | |
1435 | WLAN_AUTH_CHALLENGE_LEN) != 0 || | |
1ea893fd | 1436 | !ieee80211_has_protected(hdr->frame_control)) { |
ff1d2767 JM |
1437 | txt = "challenge response incorrect"; |
1438 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1439 | goto fail; | |
1440 | } | |
1441 | ||
1442 | txt = "challenge OK - authOK"; | |
1443 | /* IEEE 802.11 standard is not completely clear about | |
1444 | * whether STA is considered authenticated after | |
1445 | * authentication OK frame has been send or after it | |
1446 | * has been ACKed. In order to reduce interoperability | |
1447 | * issues, mark the STA authenticated before ACK. */ | |
1448 | sta->flags |= WLAN_STA_AUTH; | |
1449 | kfree(sta->u.sta.challenge); | |
1450 | sta->u.sta.challenge = NULL; | |
1451 | } | |
1452 | break; | |
1453 | } | |
1454 | ||
1455 | fail: | |
8a9faf3c | 1456 | pos = (__le16 *) body; |
ff1d2767 JM |
1457 | *pos = cpu_to_le16(auth_alg); |
1458 | pos++; | |
1459 | *pos = cpu_to_le16(auth_transaction + 1); | |
1460 | pos++; | |
1461 | *pos = cpu_to_le16(resp); /* status_code */ | |
1462 | pos++; | |
1463 | olen = 6; | |
1464 | ||
1465 | if (resp == WLAN_STATUS_SUCCESS && sta != NULL && | |
1466 | sta->u.sta.challenge != NULL && | |
1467 | auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) { | |
1468 | u8 *tmp = (u8 *) pos; | |
1469 | *tmp++ = WLAN_EID_CHALLENGE; | |
1470 | *tmp++ = WLAN_AUTH_CHALLENGE_LEN; | |
1471 | pos++; | |
1472 | memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN); | |
1473 | olen += 2 + WLAN_AUTH_CHALLENGE_LEN; | |
1474 | } | |
1475 | ||
4339d328 | 1476 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH, |
ff1d2767 JM |
1477 | body, olen, hdr->addr2, ap->tx_callback_auth); |
1478 | ||
1479 | if (sta) { | |
1480 | sta->last_rx = jiffies; | |
1481 | atomic_dec(&sta->users); | |
1482 | } | |
1483 | ||
1484 | if (resp) { | |
e174961c | 1485 | PDEBUG(DEBUG_AP, "%s: %pM auth (alg=%d " |
0795af57 | 1486 | "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n", |
e174961c | 1487 | dev->name, hdr->addr2, |
21f644f3 | 1488 | auth_alg, auth_transaction, status_code, len, |
1ea893fd | 1489 | le16_to_cpu(hdr->frame_control), resp, txt); |
ff1d2767 JM |
1490 | } |
1491 | } | |
1492 | ||
1493 | ||
1494 | /* Called only as a scheduled task for pending AP frames. */ | |
1495 | static void handle_assoc(local_info_t *local, struct sk_buff *skb, | |
1496 | struct hostap_80211_rx_status *rx_stats, int reassoc) | |
1497 | { | |
1498 | struct net_device *dev = local->dev; | |
1ea893fd | 1499 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1500 | char body[12], *p, *lpos; |
1501 | int len, left; | |
8a9faf3c | 1502 | __le16 *pos; |
ff1d2767 JM |
1503 | u16 resp = WLAN_STATUS_SUCCESS; |
1504 | struct sta_info *sta = NULL; | |
1505 | int send_deauth = 0; | |
1506 | char *txt = ""; | |
1507 | u8 prev_ap[ETH_ALEN]; | |
1508 | ||
1509 | left = len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1510 | ||
1511 | if (len < (reassoc ? 10 : 4)) { | |
1512 | PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload " | |
e174961c JB |
1513 | "(len=%d, reassoc=%d) from %pM\n", |
1514 | dev->name, len, reassoc, hdr->addr2); | |
ff1d2767 JM |
1515 | return; |
1516 | } | |
1517 | ||
1518 | spin_lock_bh(&local->ap->sta_table_lock); | |
1519 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1520 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
1521 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1522 | txt = "trying to associate before authentication"; | |
1523 | send_deauth = 1; | |
1524 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1525 | sta = NULL; /* do not decrement sta->users */ | |
1526 | goto fail; | |
1527 | } | |
1528 | atomic_inc(&sta->users); | |
1529 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1530 | ||
8a9faf3c | 1531 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
1532 | sta->capability = __le16_to_cpu(*pos); |
1533 | pos++; left -= 2; | |
1534 | sta->listen_interval = __le16_to_cpu(*pos); | |
1535 | pos++; left -= 2; | |
1536 | ||
1537 | if (reassoc) { | |
1538 | memcpy(prev_ap, pos, ETH_ALEN); | |
1539 | pos++; pos++; pos++; left -= 6; | |
1540 | } else | |
1541 | memset(prev_ap, 0, ETH_ALEN); | |
1542 | ||
1543 | if (left >= 2) { | |
1544 | unsigned int ileft; | |
1545 | unsigned char *u = (unsigned char *) pos; | |
1546 | ||
1547 | if (*u == WLAN_EID_SSID) { | |
1548 | u++; left--; | |
1549 | ileft = *u; | |
1550 | u++; left--; | |
1551 | ||
1552 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
1553 | txt = "SSID overflow"; | |
1554 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1555 | goto fail; | |
1556 | } | |
1557 | ||
1558 | if (ileft != strlen(local->essid) || | |
1559 | memcmp(local->essid, u, ileft) != 0) { | |
1560 | txt = "not our SSID"; | |
1561 | resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC; | |
1562 | goto fail; | |
1563 | } | |
1564 | ||
1565 | u += ileft; | |
1566 | left -= ileft; | |
1567 | } | |
1568 | ||
1569 | if (left >= 2 && *u == WLAN_EID_SUPP_RATES) { | |
1570 | u++; left--; | |
1571 | ileft = *u; | |
1572 | u++; left--; | |
74fae82c | 1573 | |
ff1d2767 JM |
1574 | if (ileft > left || ileft == 0 || |
1575 | ileft > WLAN_SUPP_RATES_MAX) { | |
1576 | txt = "SUPP_RATES len error"; | |
1577 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1578 | goto fail; | |
1579 | } | |
1580 | ||
1581 | memset(sta->supported_rates, 0, | |
1582 | sizeof(sta->supported_rates)); | |
1583 | memcpy(sta->supported_rates, u, ileft); | |
1584 | prism2_check_tx_rates(sta); | |
1585 | ||
1586 | u += ileft; | |
1587 | left -= ileft; | |
1588 | } | |
1589 | ||
1590 | if (left > 0) { | |
e174961c | 1591 | PDEBUG(DEBUG_AP, "%s: assoc from %pM" |
0795af57 | 1592 | " with extra data (%d bytes) [", |
e174961c | 1593 | dev->name, hdr->addr2, left); |
ff1d2767 JM |
1594 | while (left > 0) { |
1595 | PDEBUG2(DEBUG_AP, "<%02x>", *u); | |
1596 | u++; left--; | |
1597 | } | |
1598 | PDEBUG2(DEBUG_AP, "]\n"); | |
1599 | } | |
1600 | } else { | |
1601 | txt = "frame underflow"; | |
1602 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1603 | goto fail; | |
1604 | } | |
1605 | ||
1606 | /* get a unique AID */ | |
1607 | if (sta->aid > 0) | |
1608 | txt = "OK, old AID"; | |
1609 | else { | |
1610 | spin_lock_bh(&local->ap->sta_table_lock); | |
1611 | for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++) | |
1612 | if (local->ap->sta_aid[sta->aid - 1] == NULL) | |
1613 | break; | |
1614 | if (sta->aid > MAX_AID_TABLE_SIZE) { | |
1615 | sta->aid = 0; | |
1616 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1617 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1618 | txt = "no room for more AIDs"; | |
1619 | } else { | |
1620 | local->ap->sta_aid[sta->aid - 1] = sta; | |
1621 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1622 | txt = "OK, new AID"; | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | fail: | |
8a9faf3c | 1627 | pos = (__le16 *) body; |
ff1d2767 JM |
1628 | |
1629 | if (send_deauth) { | |
8a9faf3c | 1630 | *pos = cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH); |
ff1d2767 JM |
1631 | pos++; |
1632 | } else { | |
1633 | /* FIX: CF-Pollable and CF-PollReq should be set to match the | |
1634 | * values in beacons/probe responses */ | |
1635 | /* FIX: how about privacy and WEP? */ | |
1636 | /* capability */ | |
8a9faf3c | 1637 | *pos = cpu_to_le16(WLAN_CAPABILITY_ESS); |
ff1d2767 JM |
1638 | pos++; |
1639 | ||
1640 | /* status_code */ | |
8a9faf3c | 1641 | *pos = cpu_to_le16(resp); |
ff1d2767 JM |
1642 | pos++; |
1643 | ||
8a9faf3c | 1644 | *pos = cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) | |
ff1d2767 JM |
1645 | BIT(14) | BIT(15)); /* AID */ |
1646 | pos++; | |
1647 | ||
1648 | /* Supported rates (Information element) */ | |
1649 | p = (char *) pos; | |
1650 | *p++ = WLAN_EID_SUPP_RATES; | |
1651 | lpos = p; | |
1652 | *p++ = 0; /* len */ | |
1653 | if (local->tx_rate_control & WLAN_RATE_1M) { | |
1654 | *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02; | |
1655 | (*lpos)++; | |
1656 | } | |
1657 | if (local->tx_rate_control & WLAN_RATE_2M) { | |
1658 | *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04; | |
1659 | (*lpos)++; | |
1660 | } | |
1661 | if (local->tx_rate_control & WLAN_RATE_5M5) { | |
1662 | *p++ = local->basic_rates & WLAN_RATE_5M5 ? | |
1663 | 0x8b : 0x0b; | |
1664 | (*lpos)++; | |
1665 | } | |
1666 | if (local->tx_rate_control & WLAN_RATE_11M) { | |
1667 | *p++ = local->basic_rates & WLAN_RATE_11M ? | |
1668 | 0x96 : 0x16; | |
1669 | (*lpos)++; | |
1670 | } | |
8a9faf3c | 1671 | pos = (__le16 *) p; |
ff1d2767 JM |
1672 | } |
1673 | ||
4339d328 JM |
1674 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
1675 | (send_deauth ? IEEE80211_STYPE_DEAUTH : | |
1676 | (reassoc ? IEEE80211_STYPE_REASSOC_RESP : | |
1677 | IEEE80211_STYPE_ASSOC_RESP)), | |
ff1d2767 JM |
1678 | body, (u8 *) pos - (u8 *) body, |
1679 | hdr->addr2, | |
1680 | send_deauth ? 0 : local->ap->tx_callback_assoc); | |
1681 | ||
1682 | if (sta) { | |
1683 | if (resp == WLAN_STATUS_SUCCESS) { | |
1684 | sta->last_rx = jiffies; | |
1685 | /* STA will be marked associated from TX callback, if | |
1686 | * AssocResp is ACKed */ | |
1687 | } | |
1688 | atomic_dec(&sta->users); | |
1689 | } | |
1690 | ||
1691 | #if 0 | |
e174961c JB |
1692 | PDEBUG(DEBUG_AP, "%s: %pM %sassoc (len=%d " |
1693 | "prev_ap=%pM) => %d(%d) (%s)\n", | |
21f644f3 | 1694 | dev->name, |
e174961c | 1695 | hdr->addr2, |
21f644f3 | 1696 | reassoc ? "re" : "", len, |
e174961c | 1697 | prev_ap, |
21f644f3 | 1698 | resp, send_deauth, txt); |
ff1d2767 JM |
1699 | #endif |
1700 | } | |
1701 | ||
1702 | ||
1703 | /* Called only as a scheduled task for pending AP frames. */ | |
1704 | static void handle_deauth(local_info_t *local, struct sk_buff *skb, | |
1705 | struct hostap_80211_rx_status *rx_stats) | |
1706 | { | |
1707 | struct net_device *dev = local->dev; | |
1ea893fd | 1708 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1709 | char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
1710 | int len; | |
8a9faf3c AV |
1711 | u16 reason_code; |
1712 | __le16 *pos; | |
ff1d2767 JM |
1713 | struct sta_info *sta = NULL; |
1714 | ||
1715 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1716 | ||
1717 | if (len < 2) { | |
1718 | printk("handle_deauth - too short payload (len=%d)\n", len); | |
1719 | return; | |
1720 | } | |
1721 | ||
8a9faf3c AV |
1722 | pos = (__le16 *) body; |
1723 | reason_code = le16_to_cpu(*pos); | |
ff1d2767 | 1724 | |
e174961c JB |
1725 | PDEBUG(DEBUG_AP, "%s: deauthentication: %pM len=%d, " |
1726 | "reason_code=%d\n", dev->name, hdr->addr2, | |
21f644f3 | 1727 | len, reason_code); |
ff1d2767 JM |
1728 | |
1729 | spin_lock_bh(&local->ap->sta_table_lock); | |
1730 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1731 | if (sta != NULL) { | |
1732 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1733 | hostap_event_expired_sta(local->dev, sta); | |
1734 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
1735 | } | |
1736 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1737 | if (sta == NULL) { | |
e174961c | 1738 | printk("%s: deauthentication from %pM, " |
ff1d2767 | 1739 | "reason_code=%d, but STA not authenticated\n", dev->name, |
e174961c | 1740 | hdr->addr2, reason_code); |
ff1d2767 JM |
1741 | } |
1742 | } | |
1743 | ||
1744 | ||
1745 | /* Called only as a scheduled task for pending AP frames. */ | |
1746 | static void handle_disassoc(local_info_t *local, struct sk_buff *skb, | |
1747 | struct hostap_80211_rx_status *rx_stats) | |
1748 | { | |
1749 | struct net_device *dev = local->dev; | |
1ea893fd | 1750 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1751 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1752 | int len; | |
8a9faf3c AV |
1753 | u16 reason_code; |
1754 | __le16 *pos; | |
ff1d2767 JM |
1755 | struct sta_info *sta = NULL; |
1756 | ||
1757 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1758 | ||
1759 | if (len < 2) { | |
1760 | printk("handle_disassoc - too short payload (len=%d)\n", len); | |
1761 | return; | |
1762 | } | |
1763 | ||
8a9faf3c AV |
1764 | pos = (__le16 *) body; |
1765 | reason_code = le16_to_cpu(*pos); | |
ff1d2767 | 1766 | |
e174961c JB |
1767 | PDEBUG(DEBUG_AP, "%s: disassociation: %pM len=%d, " |
1768 | "reason_code=%d\n", dev->name, hdr->addr2, | |
21f644f3 | 1769 | len, reason_code); |
ff1d2767 JM |
1770 | |
1771 | spin_lock_bh(&local->ap->sta_table_lock); | |
1772 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1773 | if (sta != NULL) { | |
1774 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1775 | hostap_event_expired_sta(local->dev, sta); | |
1776 | sta->flags &= ~WLAN_STA_ASSOC; | |
1777 | } | |
1778 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1779 | if (sta == NULL) { | |
e174961c | 1780 | printk("%s: disassociation from %pM, " |
ff1d2767 | 1781 | "reason_code=%d, but STA not authenticated\n", |
e174961c | 1782 | dev->name, hdr->addr2, reason_code); |
ff1d2767 JM |
1783 | } |
1784 | } | |
1785 | ||
1786 | ||
1787 | /* Called only as a scheduled task for pending AP frames. */ | |
1788 | static void ap_handle_data_nullfunc(local_info_t *local, | |
1ea893fd | 1789 | struct ieee80211_hdr *hdr) |
ff1d2767 JM |
1790 | { |
1791 | struct net_device *dev = local->dev; | |
1792 | ||
1793 | /* some STA f/w's seem to require control::ACK frame for | |
1794 | * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does | |
1795 | * not send this.. | |
1796 | * send control::ACK for the data::nullfunc */ | |
1797 | ||
1798 | printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n"); | |
4339d328 | 1799 | prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK, |
ff1d2767 JM |
1800 | NULL, 0, hdr->addr2, 0); |
1801 | } | |
1802 | ||
1803 | ||
1804 | /* Called only as a scheduled task for pending AP frames. */ | |
1805 | static void ap_handle_dropped_data(local_info_t *local, | |
1ea893fd | 1806 | struct ieee80211_hdr *hdr) |
ff1d2767 JM |
1807 | { |
1808 | struct net_device *dev = local->dev; | |
1809 | struct sta_info *sta; | |
8a9faf3c | 1810 | __le16 reason; |
ff1d2767 JM |
1811 | |
1812 | spin_lock_bh(&local->ap->sta_table_lock); | |
1813 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1814 | if (sta) | |
1815 | atomic_inc(&sta->users); | |
1816 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1817 | ||
1818 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) { | |
1819 | PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n"); | |
1820 | atomic_dec(&sta->users); | |
1821 | return; | |
1822 | } | |
1823 | ||
8a9faf3c | 1824 | reason = cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); |
4339d328 | 1825 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
ff1d2767 | 1826 | ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ? |
4339d328 | 1827 | IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC), |
ff1d2767 JM |
1828 | (char *) &reason, sizeof(reason), hdr->addr2, 0); |
1829 | ||
1830 | if (sta) | |
1831 | atomic_dec(&sta->users); | |
1832 | } | |
1833 | ||
1834 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1835 | ||
1836 | ||
1837 | /* Called only as a scheduled task for pending AP frames. */ | |
1838 | static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta, | |
1839 | struct sk_buff *skb) | |
1840 | { | |
5bee720f JM |
1841 | struct hostap_skb_tx_data *meta; |
1842 | ||
ff1d2767 JM |
1843 | if (!(sta->flags & WLAN_STA_PS)) { |
1844 | /* Station has moved to non-PS mode, so send all buffered | |
1845 | * frames using normal device queue. */ | |
1846 | dev_queue_xmit(skb); | |
1847 | return; | |
1848 | } | |
1849 | ||
1850 | /* add a flag for hostap_handle_sta_tx() to know that this skb should | |
1851 | * be passed through even though STA is using PS */ | |
5bee720f JM |
1852 | meta = (struct hostap_skb_tx_data *) skb->cb; |
1853 | meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME; | |
ff1d2767 JM |
1854 | if (!skb_queue_empty(&sta->tx_buf)) { |
1855 | /* indicate to STA that more frames follow */ | |
5bee720f | 1856 | meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA; |
ff1d2767 JM |
1857 | } |
1858 | dev_queue_xmit(skb); | |
1859 | } | |
1860 | ||
1861 | ||
1862 | /* Called only as a scheduled task for pending AP frames. */ | |
1863 | static void handle_pspoll(local_info_t *local, | |
1ea893fd | 1864 | struct ieee80211_hdr *hdr, |
ff1d2767 JM |
1865 | struct hostap_80211_rx_status *rx_stats) |
1866 | { | |
1867 | struct net_device *dev = local->dev; | |
1868 | struct sta_info *sta; | |
1869 | u16 aid; | |
1870 | struct sk_buff *skb; | |
1871 | ||
e174961c | 1872 | PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n", |
1ea893fd | 1873 | hdr->addr1, hdr->addr2, !!ieee80211_has_pm(hdr->frame_control)); |
ff1d2767 JM |
1874 | |
1875 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
e174961c JB |
1876 | PDEBUG(DEBUG_AP, |
1877 | "handle_pspoll - addr1(BSSID)=%pM not own MAC\n", | |
1878 | hdr->addr1); | |
ff1d2767 JM |
1879 | return; |
1880 | } | |
1881 | ||
8a9faf3c | 1882 | aid = le16_to_cpu(hdr->duration_id); |
ff1d2767 JM |
1883 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) { |
1884 | PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n"); | |
1885 | return; | |
1886 | } | |
1bcca3c4 | 1887 | aid &= ~(BIT(15) | BIT(14)); |
ff1d2767 JM |
1888 | if (aid == 0 || aid > MAX_AID_TABLE_SIZE) { |
1889 | PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid); | |
1890 | return; | |
1891 | } | |
1892 | PDEBUG(DEBUG_PS2, " aid=%d\n", aid); | |
1893 | ||
1894 | spin_lock_bh(&local->ap->sta_table_lock); | |
1895 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1896 | if (sta) | |
1897 | atomic_inc(&sta->users); | |
1898 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1899 | ||
1900 | if (sta == NULL) { | |
1901 | PDEBUG(DEBUG_PS, " STA not found\n"); | |
1902 | return; | |
1903 | } | |
1904 | if (sta->aid != aid) { | |
1905 | PDEBUG(DEBUG_PS, " received aid=%i does not match with " | |
1906 | "assoc.aid=%d\n", aid, sta->aid); | |
1907 | return; | |
1908 | } | |
1909 | ||
1910 | /* FIX: todo: | |
1911 | * - add timeout for buffering (clear aid in TIM vector if buffer timed | |
1912 | * out (expiry time must be longer than ListenInterval for | |
1913 | * the corresponding STA; "8802-11: 11.2.1.9 AP aging function" | |
1914 | * - what to do, if buffered, pspolled, and sent frame is not ACKed by | |
1915 | * sta; store buffer for later use and leave TIM aid bit set? use | |
1916 | * TX event to check whether frame was ACKed? | |
1917 | */ | |
1918 | ||
1919 | while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) { | |
1920 | /* send buffered frame .. */ | |
1921 | PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL" | |
1922 | " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf)); | |
1923 | ||
1924 | pspoll_send_buffered(local, sta, skb); | |
1925 | ||
1926 | if (sta->flags & WLAN_STA_PS) { | |
1927 | /* send only one buffered packet per PS Poll */ | |
1928 | /* FIX: should ignore further PS Polls until the | |
1929 | * buffered packet that was just sent is acknowledged | |
1930 | * (Tx or TxExc event) */ | |
1931 | break; | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | if (skb_queue_empty(&sta->tx_buf)) { | |
1936 | /* try to clear aid from TIM */ | |
1937 | if (!(sta->flags & WLAN_STA_TIM)) | |
1938 | PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n", | |
1939 | aid); | |
1940 | hostap_set_tim(local, aid, 0); | |
1941 | sta->flags &= ~WLAN_STA_TIM; | |
1942 | } | |
1943 | ||
1944 | atomic_dec(&sta->users); | |
1945 | } | |
1946 | ||
1947 | ||
1948 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1949 | ||
c4028958 | 1950 | static void handle_wds_oper_queue(struct work_struct *work) |
ff1d2767 | 1951 | { |
c4028958 DH |
1952 | struct ap_data *ap = container_of(work, struct ap_data, |
1953 | wds_oper_queue); | |
1954 | local_info_t *local = ap->local; | |
ff1d2767 JM |
1955 | struct wds_oper_data *entry, *prev; |
1956 | ||
1957 | spin_lock_bh(&local->lock); | |
1958 | entry = local->ap->wds_oper_entries; | |
1959 | local->ap->wds_oper_entries = NULL; | |
1960 | spin_unlock_bh(&local->lock); | |
1961 | ||
1962 | while (entry) { | |
1963 | PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection " | |
e174961c | 1964 | "to AP %pM\n", |
ff1d2767 JM |
1965 | local->dev->name, |
1966 | entry->type == WDS_ADD ? "adding" : "removing", | |
e174961c | 1967 | entry->addr); |
ff1d2767 JM |
1968 | if (entry->type == WDS_ADD) |
1969 | prism2_wds_add(local, entry->addr, 0); | |
1970 | else if (entry->type == WDS_DEL) | |
1971 | prism2_wds_del(local, entry->addr, 0, 1); | |
1972 | ||
1973 | prev = entry; | |
1974 | entry = entry->next; | |
1975 | kfree(prev); | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | ||
1980 | /* Called only as a scheduled task for pending AP frames. */ | |
1981 | static void handle_beacon(local_info_t *local, struct sk_buff *skb, | |
1982 | struct hostap_80211_rx_status *rx_stats) | |
1983 | { | |
1ea893fd | 1984 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1985 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1986 | int len, left; | |
8a9faf3c AV |
1987 | u16 beacon_int, capability; |
1988 | __le16 *pos; | |
ff1d2767 JM |
1989 | char *ssid = NULL; |
1990 | unsigned char *supp_rates = NULL; | |
1991 | int ssid_len = 0, supp_rates_len = 0; | |
1992 | struct sta_info *sta = NULL; | |
1993 | int new_sta = 0, channel = -1; | |
1994 | ||
1995 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1996 | ||
1997 | if (len < 8 + 2 + 2) { | |
1998 | printk(KERN_DEBUG "handle_beacon - too short payload " | |
1999 | "(len=%d)\n", len); | |
2000 | return; | |
2001 | } | |
2002 | ||
8a9faf3c | 2003 | pos = (__le16 *) body; |
ff1d2767 JM |
2004 | left = len; |
2005 | ||
2006 | /* Timestamp (8 octets) */ | |
2007 | pos += 4; left -= 8; | |
2008 | /* Beacon interval (2 octets) */ | |
8a9faf3c | 2009 | beacon_int = le16_to_cpu(*pos); |
ff1d2767 JM |
2010 | pos++; left -= 2; |
2011 | /* Capability information (2 octets) */ | |
8a9faf3c | 2012 | capability = le16_to_cpu(*pos); |
ff1d2767 JM |
2013 | pos++; left -= 2; |
2014 | ||
2015 | if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS && | |
2016 | capability & WLAN_CAPABILITY_IBSS) | |
2017 | return; | |
2018 | ||
2019 | if (left >= 2) { | |
2020 | unsigned int ileft; | |
2021 | unsigned char *u = (unsigned char *) pos; | |
2022 | ||
2023 | if (*u == WLAN_EID_SSID) { | |
2024 | u++; left--; | |
2025 | ileft = *u; | |
2026 | u++; left--; | |
2027 | ||
2028 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
2029 | PDEBUG(DEBUG_AP, "SSID: overflow\n"); | |
2030 | return; | |
2031 | } | |
2032 | ||
2033 | if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID && | |
2034 | (ileft != strlen(local->essid) || | |
2035 | memcmp(local->essid, u, ileft) != 0)) { | |
2036 | /* not our SSID */ | |
2037 | return; | |
2038 | } | |
2039 | ||
2040 | ssid = u; | |
2041 | ssid_len = ileft; | |
2042 | ||
2043 | u += ileft; | |
2044 | left -= ileft; | |
2045 | } | |
2046 | ||
2047 | if (*u == WLAN_EID_SUPP_RATES) { | |
2048 | u++; left--; | |
2049 | ileft = *u; | |
2050 | u++; left--; | |
74fae82c | 2051 | |
ff1d2767 JM |
2052 | if (ileft > left || ileft == 0 || ileft > 8) { |
2053 | PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n"); | |
2054 | return; | |
2055 | } | |
2056 | ||
2057 | supp_rates = u; | |
2058 | supp_rates_len = ileft; | |
2059 | ||
2060 | u += ileft; | |
2061 | left -= ileft; | |
2062 | } | |
2063 | ||
2064 | if (*u == WLAN_EID_DS_PARAMS) { | |
2065 | u++; left--; | |
2066 | ileft = *u; | |
2067 | u++; left--; | |
74fae82c | 2068 | |
ff1d2767 JM |
2069 | if (ileft > left || ileft != 1) { |
2070 | PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n"); | |
2071 | return; | |
2072 | } | |
2073 | ||
2074 | channel = *u; | |
2075 | ||
2076 | u += ileft; | |
2077 | left -= ileft; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | spin_lock_bh(&local->ap->sta_table_lock); | |
2082 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2083 | if (sta != NULL) | |
2084 | atomic_inc(&sta->users); | |
2085 | spin_unlock_bh(&local->ap->sta_table_lock); | |
2086 | ||
2087 | if (sta == NULL) { | |
2088 | /* add new AP */ | |
2089 | new_sta = 1; | |
2090 | sta = ap_add_sta(local->ap, hdr->addr2); | |
2091 | if (sta == NULL) { | |
2092 | printk(KERN_INFO "prism2: kmalloc failed for AP " | |
2093 | "data structure\n"); | |
2094 | return; | |
2095 | } | |
2096 | hostap_event_new_sta(local->dev, sta); | |
2097 | ||
2098 | /* mark APs authentication and associated for pseudo ad-hoc | |
2099 | * style communication */ | |
2100 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2101 | ||
2102 | if (local->ap->autom_ap_wds) { | |
2103 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
2104 | } | |
2105 | } | |
2106 | ||
2107 | sta->ap = 1; | |
2108 | if (ssid) { | |
2109 | sta->u.ap.ssid_len = ssid_len; | |
2110 | memcpy(sta->u.ap.ssid, ssid, ssid_len); | |
2111 | sta->u.ap.ssid[ssid_len] = '\0'; | |
2112 | } else { | |
2113 | sta->u.ap.ssid_len = 0; | |
2114 | sta->u.ap.ssid[0] = '\0'; | |
2115 | } | |
2116 | sta->u.ap.channel = channel; | |
2117 | sta->rx_packets++; | |
2118 | sta->rx_bytes += len; | |
2119 | sta->u.ap.last_beacon = sta->last_rx = jiffies; | |
2120 | sta->capability = capability; | |
2121 | sta->listen_interval = beacon_int; | |
2122 | ||
2123 | atomic_dec(&sta->users); | |
2124 | ||
2125 | if (new_sta) { | |
2126 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
2127 | memcpy(sta->supported_rates, supp_rates, supp_rates_len); | |
2128 | prism2_check_tx_rates(sta); | |
2129 | } | |
2130 | } | |
2131 | ||
2132 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2133 | ||
2134 | ||
2135 | /* Called only as a tasklet. */ | |
2136 | static void handle_ap_item(local_info_t *local, struct sk_buff *skb, | |
2137 | struct hostap_80211_rx_status *rx_stats) | |
2138 | { | |
2139 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2140 | struct net_device *dev = local->dev; | |
2141 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2142 | u16 fc, type, stype; | |
1ea893fd | 2143 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2144 | |
2145 | /* FIX: should give skb->len to handler functions and check that the | |
2146 | * buffer is long enough */ | |
1ea893fd DW |
2147 | hdr = (struct ieee80211_hdr *) skb->data; |
2148 | fc = le16_to_cpu(hdr->frame_control); | |
2149 | type = fc & IEEE80211_FCTL_FTYPE; | |
2150 | stype = fc & IEEE80211_FCTL_STYPE; | |
ff1d2767 JM |
2151 | |
2152 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2153 | if (!local->hostapd && type == IEEE80211_FTYPE_DATA) { |
ff1d2767 JM |
2154 | PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n"); |
2155 | ||
b2f4a2e3 JM |
2156 | if (!(fc & IEEE80211_FCTL_TODS) || |
2157 | (fc & IEEE80211_FCTL_FROMDS)) { | |
4339d328 | 2158 | if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
2159 | /* no ToDS nullfunc seems to be used to check |
2160 | * AP association; so send reject message to | |
2161 | * speed up re-association */ | |
2162 | ap_handle_dropped_data(local, hdr); | |
2163 | goto done; | |
2164 | } | |
2165 | PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n", | |
2166 | fc); | |
2167 | goto done; | |
2168 | } | |
2169 | ||
2170 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
e174961c JB |
2171 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=%pM" |
2172 | " not own MAC\n", hdr->addr1); | |
ff1d2767 JM |
2173 | goto done; |
2174 | } | |
2175 | ||
4339d328 JM |
2176 | if (local->ap->nullfunc_ack && |
2177 | stype == IEEE80211_STYPE_NULLFUNC) | |
ff1d2767 JM |
2178 | ap_handle_data_nullfunc(local, hdr); |
2179 | else | |
2180 | ap_handle_dropped_data(local, hdr); | |
2181 | goto done; | |
2182 | } | |
2183 | ||
4339d328 | 2184 | if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) { |
ff1d2767 JM |
2185 | handle_beacon(local, skb, rx_stats); |
2186 | goto done; | |
2187 | } | |
2188 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2189 | ||
4339d328 | 2190 | if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) { |
ff1d2767 JM |
2191 | handle_pspoll(local, hdr, rx_stats); |
2192 | goto done; | |
2193 | } | |
2194 | ||
2195 | if (local->hostapd) { | |
2196 | PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x " | |
2197 | "subtype=0x%02x\n", type, stype); | |
2198 | goto done; | |
2199 | } | |
2200 | ||
2201 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2202 | if (type != IEEE80211_FTYPE_MGMT) { |
ff1d2767 JM |
2203 | PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n"); |
2204 | goto done; | |
2205 | } | |
2206 | ||
2207 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) { | |
e174961c JB |
2208 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM" |
2209 | " not own MAC\n", hdr->addr1); | |
ff1d2767 JM |
2210 | goto done; |
2211 | } | |
2212 | ||
2213 | if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) { | |
e174961c JB |
2214 | PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%pM" |
2215 | " not own MAC\n", hdr->addr3); | |
ff1d2767 JM |
2216 | goto done; |
2217 | } | |
2218 | ||
2219 | switch (stype) { | |
4339d328 | 2220 | case IEEE80211_STYPE_ASSOC_REQ: |
ff1d2767 JM |
2221 | handle_assoc(local, skb, rx_stats, 0); |
2222 | break; | |
4339d328 | 2223 | case IEEE80211_STYPE_ASSOC_RESP: |
ff1d2767 JM |
2224 | PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n"); |
2225 | break; | |
4339d328 | 2226 | case IEEE80211_STYPE_REASSOC_REQ: |
ff1d2767 JM |
2227 | handle_assoc(local, skb, rx_stats, 1); |
2228 | break; | |
4339d328 | 2229 | case IEEE80211_STYPE_REASSOC_RESP: |
ff1d2767 JM |
2230 | PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n"); |
2231 | break; | |
4339d328 | 2232 | case IEEE80211_STYPE_ATIM: |
ff1d2767 JM |
2233 | PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n"); |
2234 | break; | |
4339d328 | 2235 | case IEEE80211_STYPE_DISASSOC: |
ff1d2767 JM |
2236 | handle_disassoc(local, skb, rx_stats); |
2237 | break; | |
4339d328 | 2238 | case IEEE80211_STYPE_AUTH: |
ff1d2767 JM |
2239 | handle_authen(local, skb, rx_stats); |
2240 | break; | |
4339d328 | 2241 | case IEEE80211_STYPE_DEAUTH: |
ff1d2767 JM |
2242 | handle_deauth(local, skb, rx_stats); |
2243 | break; | |
2244 | default: | |
4339d328 JM |
2245 | PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n", |
2246 | stype >> 4); | |
ff1d2767 JM |
2247 | break; |
2248 | } | |
2249 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2250 | ||
2251 | done: | |
2252 | dev_kfree_skb(skb); | |
2253 | } | |
2254 | ||
2255 | ||
2256 | /* Called only as a tasklet (software IRQ) */ | |
2257 | void hostap_rx(struct net_device *dev, struct sk_buff *skb, | |
2258 | struct hostap_80211_rx_status *rx_stats) | |
2259 | { | |
2260 | struct hostap_interface *iface; | |
2261 | local_info_t *local; | |
1ea893fd | 2262 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2263 | |
2264 | iface = netdev_priv(dev); | |
2265 | local = iface->local; | |
2266 | ||
2267 | if (skb->len < 16) | |
2268 | goto drop; | |
2269 | ||
4cfa8e45 | 2270 | dev->stats.rx_packets++; |
ff1d2767 | 2271 | |
1ea893fd | 2272 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2273 | |
2274 | if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL && | |
1ea893fd | 2275 | ieee80211_is_beacon(hdr->frame_control)) |
ff1d2767 JM |
2276 | goto drop; |
2277 | ||
c1b4aa3f | 2278 | skb->protocol = cpu_to_be16(ETH_P_HOSTAP); |
ff1d2767 JM |
2279 | handle_ap_item(local, skb, rx_stats); |
2280 | return; | |
2281 | ||
2282 | drop: | |
2283 | dev_kfree_skb(skb); | |
2284 | } | |
2285 | ||
2286 | ||
2287 | /* Called only as a tasklet (software IRQ) */ | |
2288 | static void schedule_packet_send(local_info_t *local, struct sta_info *sta) | |
2289 | { | |
2290 | struct sk_buff *skb; | |
1ea893fd | 2291 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2292 | struct hostap_80211_rx_status rx_stats; |
2293 | ||
2294 | if (skb_queue_empty(&sta->tx_buf)) | |
2295 | return; | |
2296 | ||
2297 | skb = dev_alloc_skb(16); | |
2298 | if (skb == NULL) { | |
2299 | printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc " | |
2300 | "failed\n", local->dev->name); | |
2301 | return; | |
2302 | } | |
2303 | ||
1ea893fd | 2304 | hdr = (struct ieee80211_hdr *) skb_put(skb, 16); |
ff1d2767 JM |
2305 | |
2306 | /* Generate a fake pspoll frame to start packet delivery */ | |
1ea893fd | 2307 | hdr->frame_control = cpu_to_le16( |
4339d328 | 2308 | IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); |
ff1d2767 JM |
2309 | memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN); |
2310 | memcpy(hdr->addr2, sta->addr, ETH_ALEN); | |
2311 | hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14)); | |
2312 | ||
e174961c JB |
2313 | PDEBUG(DEBUG_PS2, |
2314 | "%s: Scheduling buffered packet delivery for STA %pM\n", | |
2315 | local->dev->name, sta->addr); | |
ff1d2767 JM |
2316 | |
2317 | skb->dev = local->dev; | |
2318 | ||
2319 | memset(&rx_stats, 0, sizeof(rx_stats)); | |
2320 | hostap_rx(local->dev, skb, &rx_stats); | |
2321 | } | |
2322 | ||
2323 | ||
5fad5a2e AB |
2324 | int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[], |
2325 | struct iw_quality qual[], int buf_size, | |
2326 | int aplist) | |
ff1d2767 JM |
2327 | { |
2328 | struct ap_data *ap = local->ap; | |
2329 | struct list_head *ptr; | |
2330 | int count = 0; | |
2331 | ||
2332 | spin_lock_bh(&ap->sta_table_lock); | |
2333 | ||
2334 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2335 | ptr = ptr->next) { | |
2336 | struct sta_info *sta = (struct sta_info *) ptr; | |
2337 | ||
2338 | if (aplist && !sta->ap) | |
2339 | continue; | |
2340 | addr[count].sa_family = ARPHRD_ETHER; | |
2341 | memcpy(addr[count].sa_data, sta->addr, ETH_ALEN); | |
2342 | if (sta->last_rx_silence == 0) | |
2343 | qual[count].qual = sta->last_rx_signal < 27 ? | |
2344 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2345 | else | |
2346 | qual[count].qual = sta->last_rx_signal - | |
2347 | sta->last_rx_silence - 35; | |
2348 | qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2349 | qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2350 | qual[count].updated = sta->last_rx_updated; | |
2351 | ||
c28df16e | 2352 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2353 | |
2354 | count++; | |
2355 | if (count >= buf_size) | |
2356 | break; | |
2357 | } | |
2358 | spin_unlock_bh(&ap->sta_table_lock); | |
2359 | ||
2360 | return count; | |
2361 | } | |
2362 | ||
2363 | ||
25985edc | 2364 | /* Translate our list of Access Points & Stations to a card independent |
ff1d2767 | 2365 | * format that the Wireless Tools will understand - Jean II */ |
ccc58057 DM |
2366 | int prism2_ap_translate_scan(struct net_device *dev, |
2367 | struct iw_request_info *info, char *buffer) | |
ff1d2767 JM |
2368 | { |
2369 | struct hostap_interface *iface; | |
2370 | local_info_t *local; | |
2371 | struct ap_data *ap; | |
2372 | struct list_head *ptr; | |
2373 | struct iw_event iwe; | |
2374 | char *current_ev = buffer; | |
2375 | char *end_buf = buffer + IW_SCAN_MAX_DATA; | |
2376 | #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT) | |
2377 | char buf[64]; | |
2378 | #endif | |
2379 | ||
2380 | iface = netdev_priv(dev); | |
2381 | local = iface->local; | |
2382 | ap = local->ap; | |
2383 | ||
2384 | spin_lock_bh(&ap->sta_table_lock); | |
2385 | ||
2386 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2387 | ptr = ptr->next) { | |
2388 | struct sta_info *sta = (struct sta_info *) ptr; | |
2389 | ||
2390 | /* First entry *MUST* be the AP MAC address */ | |
2391 | memset(&iwe, 0, sizeof(iwe)); | |
2392 | iwe.cmd = SIOCGIWAP; | |
2393 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
2394 | memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN); | |
2395 | iwe.len = IW_EV_ADDR_LEN; | |
ccc58057 DM |
2396 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2397 | &iwe, IW_EV_ADDR_LEN); | |
ff1d2767 JM |
2398 | |
2399 | /* Use the mode to indicate if it's a station or | |
2400 | * an Access Point */ | |
2401 | memset(&iwe, 0, sizeof(iwe)); | |
2402 | iwe.cmd = SIOCGIWMODE; | |
2403 | if (sta->ap) | |
2404 | iwe.u.mode = IW_MODE_MASTER; | |
2405 | else | |
2406 | iwe.u.mode = IW_MODE_INFRA; | |
2407 | iwe.len = IW_EV_UINT_LEN; | |
ccc58057 DM |
2408 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2409 | &iwe, IW_EV_UINT_LEN); | |
ff1d2767 JM |
2410 | |
2411 | /* Some quality */ | |
2412 | memset(&iwe, 0, sizeof(iwe)); | |
2413 | iwe.cmd = IWEVQUAL; | |
2414 | if (sta->last_rx_silence == 0) | |
2415 | iwe.u.qual.qual = sta->last_rx_signal < 27 ? | |
2416 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2417 | else | |
2418 | iwe.u.qual.qual = sta->last_rx_signal - | |
2419 | sta->last_rx_silence - 35; | |
2420 | iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2421 | iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2422 | iwe.u.qual.updated = sta->last_rx_updated; | |
2423 | iwe.len = IW_EV_QUAL_LEN; | |
ccc58057 DM |
2424 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2425 | &iwe, IW_EV_QUAL_LEN); | |
ff1d2767 JM |
2426 | |
2427 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2428 | if (sta->ap) { | |
2429 | memset(&iwe, 0, sizeof(iwe)); | |
2430 | iwe.cmd = SIOCGIWESSID; | |
2431 | iwe.u.data.length = sta->u.ap.ssid_len; | |
2432 | iwe.u.data.flags = 1; | |
ccc58057 DM |
2433 | current_ev = iwe_stream_add_point(info, current_ev, |
2434 | end_buf, &iwe, | |
ff1d2767 JM |
2435 | sta->u.ap.ssid); |
2436 | ||
2437 | memset(&iwe, 0, sizeof(iwe)); | |
2438 | iwe.cmd = SIOCGIWENCODE; | |
2439 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
2440 | iwe.u.data.flags = | |
2441 | IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
2442 | else | |
2443 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
ccc58057 DM |
2444 | current_ev = iwe_stream_add_point(info, current_ev, |
2445 | end_buf, &iwe, | |
2446 | sta->u.ap.ssid); | |
ff1d2767 JM |
2447 | |
2448 | if (sta->u.ap.channel > 0 && | |
2449 | sta->u.ap.channel <= FREQ_COUNT) { | |
2450 | memset(&iwe, 0, sizeof(iwe)); | |
2451 | iwe.cmd = SIOCGIWFREQ; | |
2452 | iwe.u.freq.m = freq_list[sta->u.ap.channel - 1] | |
2453 | * 100000; | |
2454 | iwe.u.freq.e = 1; | |
2455 | current_ev = iwe_stream_add_event( | |
ccc58057 | 2456 | info, current_ev, end_buf, &iwe, |
ff1d2767 JM |
2457 | IW_EV_FREQ_LEN); |
2458 | } | |
2459 | ||
2460 | memset(&iwe, 0, sizeof(iwe)); | |
2461 | iwe.cmd = IWEVCUSTOM; | |
2462 | sprintf(buf, "beacon_interval=%d", | |
2463 | sta->listen_interval); | |
2464 | iwe.u.data.length = strlen(buf); | |
ccc58057 DM |
2465 | current_ev = iwe_stream_add_point(info, current_ev, |
2466 | end_buf, &iwe, buf); | |
ff1d2767 JM |
2467 | } |
2468 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2469 | ||
c28df16e | 2470 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2471 | |
2472 | /* To be continued, we should make good use of IWEVCUSTOM */ | |
2473 | } | |
2474 | ||
2475 | spin_unlock_bh(&ap->sta_table_lock); | |
2476 | ||
2477 | return current_ev - buffer; | |
2478 | } | |
2479 | ||
2480 | ||
2481 | static int prism2_hostapd_add_sta(struct ap_data *ap, | |
2482 | struct prism2_hostapd_param *param) | |
2483 | { | |
2484 | struct sta_info *sta; | |
2485 | ||
2486 | spin_lock_bh(&ap->sta_table_lock); | |
2487 | sta = ap_get_sta(ap, param->sta_addr); | |
2488 | if (sta) | |
2489 | atomic_inc(&sta->users); | |
2490 | spin_unlock_bh(&ap->sta_table_lock); | |
2491 | ||
2492 | if (sta == NULL) { | |
2493 | sta = ap_add_sta(ap, param->sta_addr); | |
2494 | if (sta == NULL) | |
2495 | return -1; | |
2496 | } | |
2497 | ||
2498 | if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2499 | hostap_event_new_sta(sta->local->dev, sta); | |
2500 | ||
2501 | sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2502 | sta->last_rx = jiffies; | |
2503 | sta->aid = param->u.add_sta.aid; | |
2504 | sta->capability = param->u.add_sta.capability; | |
2505 | sta->tx_supp_rates = param->u.add_sta.tx_supp_rates; | |
2506 | if (sta->tx_supp_rates & WLAN_RATE_1M) | |
2507 | sta->supported_rates[0] = 2; | |
2508 | if (sta->tx_supp_rates & WLAN_RATE_2M) | |
2509 | sta->supported_rates[1] = 4; | |
2510 | if (sta->tx_supp_rates & WLAN_RATE_5M5) | |
2511 | sta->supported_rates[2] = 11; | |
2512 | if (sta->tx_supp_rates & WLAN_RATE_11M) | |
2513 | sta->supported_rates[3] = 22; | |
2514 | prism2_check_tx_rates(sta); | |
2515 | atomic_dec(&sta->users); | |
2516 | return 0; | |
2517 | } | |
2518 | ||
2519 | ||
2520 | static int prism2_hostapd_remove_sta(struct ap_data *ap, | |
2521 | struct prism2_hostapd_param *param) | |
2522 | { | |
2523 | struct sta_info *sta; | |
2524 | ||
2525 | spin_lock_bh(&ap->sta_table_lock); | |
2526 | sta = ap_get_sta(ap, param->sta_addr); | |
2527 | if (sta) { | |
2528 | ap_sta_hash_del(ap, sta); | |
2529 | list_del(&sta->list); | |
2530 | } | |
2531 | spin_unlock_bh(&ap->sta_table_lock); | |
2532 | ||
2533 | if (!sta) | |
2534 | return -ENOENT; | |
2535 | ||
2536 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2537 | hostap_event_expired_sta(sta->local->dev, sta); | |
2538 | ap_free_sta(ap, sta); | |
2539 | ||
2540 | return 0; | |
2541 | } | |
2542 | ||
2543 | ||
2544 | static int prism2_hostapd_get_info_sta(struct ap_data *ap, | |
2545 | struct prism2_hostapd_param *param) | |
2546 | { | |
2547 | struct sta_info *sta; | |
2548 | ||
2549 | spin_lock_bh(&ap->sta_table_lock); | |
2550 | sta = ap_get_sta(ap, param->sta_addr); | |
2551 | if (sta) | |
2552 | atomic_inc(&sta->users); | |
2553 | spin_unlock_bh(&ap->sta_table_lock); | |
2554 | ||
2555 | if (!sta) | |
2556 | return -ENOENT; | |
2557 | ||
2558 | param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ; | |
2559 | ||
2560 | atomic_dec(&sta->users); | |
2561 | ||
2562 | return 1; | |
2563 | } | |
2564 | ||
2565 | ||
2566 | static int prism2_hostapd_set_flags_sta(struct ap_data *ap, | |
2567 | struct prism2_hostapd_param *param) | |
2568 | { | |
2569 | struct sta_info *sta; | |
2570 | ||
2571 | spin_lock_bh(&ap->sta_table_lock); | |
2572 | sta = ap_get_sta(ap, param->sta_addr); | |
2573 | if (sta) { | |
2574 | sta->flags |= param->u.set_flags_sta.flags_or; | |
2575 | sta->flags &= param->u.set_flags_sta.flags_and; | |
2576 | } | |
2577 | spin_unlock_bh(&ap->sta_table_lock); | |
2578 | ||
2579 | if (!sta) | |
2580 | return -ENOENT; | |
2581 | ||
2582 | return 0; | |
2583 | } | |
2584 | ||
2585 | ||
2586 | static int prism2_hostapd_sta_clear_stats(struct ap_data *ap, | |
2587 | struct prism2_hostapd_param *param) | |
2588 | { | |
2589 | struct sta_info *sta; | |
2590 | int rate; | |
2591 | ||
2592 | spin_lock_bh(&ap->sta_table_lock); | |
2593 | sta = ap_get_sta(ap, param->sta_addr); | |
2594 | if (sta) { | |
2595 | sta->rx_packets = sta->tx_packets = 0; | |
2596 | sta->rx_bytes = sta->tx_bytes = 0; | |
2597 | for (rate = 0; rate < WLAN_RATE_COUNT; rate++) { | |
2598 | sta->tx_count[rate] = 0; | |
2599 | sta->rx_count[rate] = 0; | |
2600 | } | |
2601 | } | |
2602 | spin_unlock_bh(&ap->sta_table_lock); | |
2603 | ||
2604 | if (!sta) | |
2605 | return -ENOENT; | |
2606 | ||
2607 | return 0; | |
2608 | } | |
2609 | ||
2610 | ||
5fad5a2e | 2611 | int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param) |
ff1d2767 JM |
2612 | { |
2613 | switch (param->cmd) { | |
2614 | case PRISM2_HOSTAPD_FLUSH: | |
2615 | ap_control_kickall(ap); | |
2616 | return 0; | |
2617 | case PRISM2_HOSTAPD_ADD_STA: | |
2618 | return prism2_hostapd_add_sta(ap, param); | |
2619 | case PRISM2_HOSTAPD_REMOVE_STA: | |
2620 | return prism2_hostapd_remove_sta(ap, param); | |
2621 | case PRISM2_HOSTAPD_GET_INFO_STA: | |
2622 | return prism2_hostapd_get_info_sta(ap, param); | |
2623 | case PRISM2_HOSTAPD_SET_FLAGS_STA: | |
2624 | return prism2_hostapd_set_flags_sta(ap, param); | |
2625 | case PRISM2_HOSTAPD_STA_CLEAR_STATS: | |
2626 | return prism2_hostapd_sta_clear_stats(ap, param); | |
2627 | default: | |
2628 | printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n", | |
2629 | param->cmd); | |
2630 | return -EOPNOTSUPP; | |
2631 | } | |
2632 | } | |
2633 | ||
2634 | ||
2635 | /* Update station info for host-based TX rate control and return current | |
2636 | * TX rate */ | |
2637 | static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev) | |
2638 | { | |
2639 | int ret = sta->tx_rate; | |
2640 | struct hostap_interface *iface; | |
2641 | local_info_t *local; | |
2642 | ||
2643 | iface = netdev_priv(dev); | |
2644 | local = iface->local; | |
2645 | ||
2646 | sta->tx_count[sta->tx_rate_idx]++; | |
2647 | sta->tx_since_last_failure++; | |
2648 | sta->tx_consecutive_exc = 0; | |
2649 | if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT && | |
2650 | sta->tx_rate_idx < sta->tx_max_rate) { | |
2651 | /* use next higher rate */ | |
2652 | int old_rate, new_rate; | |
2653 | old_rate = new_rate = sta->tx_rate_idx; | |
2654 | while (new_rate < sta->tx_max_rate) { | |
2655 | new_rate++; | |
2656 | if (ap_tx_rate_ok(new_rate, sta, local)) { | |
2657 | sta->tx_rate_idx = new_rate; | |
2658 | break; | |
2659 | } | |
2660 | } | |
2661 | if (old_rate != sta->tx_rate_idx) { | |
2662 | switch (sta->tx_rate_idx) { | |
2663 | case 0: sta->tx_rate = 10; break; | |
2664 | case 1: sta->tx_rate = 20; break; | |
2665 | case 2: sta->tx_rate = 55; break; | |
2666 | case 3: sta->tx_rate = 110; break; | |
2667 | default: sta->tx_rate = 0; break; | |
2668 | } | |
e174961c JB |
2669 | PDEBUG(DEBUG_AP, "%s: STA %pM TX rate raised to %d\n", |
2670 | dev->name, sta->addr, sta->tx_rate); | |
ff1d2767 JM |
2671 | } |
2672 | sta->tx_since_last_failure = 0; | |
2673 | } | |
2674 | ||
2675 | return ret; | |
2676 | } | |
2677 | ||
2678 | ||
2679 | /* Called only from software IRQ. Called for each TX frame prior possible | |
2680 | * encryption and transmit. */ | |
2681 | ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx) | |
2682 | { | |
2683 | struct sta_info *sta = NULL; | |
2684 | struct sk_buff *skb = tx->skb; | |
2685 | int set_tim, ret; | |
1ea893fd | 2686 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2687 | struct hostap_skb_tx_data *meta; |
2688 | ||
2689 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
2690 | ret = AP_TX_CONTINUE; | |
2691 | if (local->ap == NULL || skb->len < 10 || | |
2692 | meta->iface->type == HOSTAP_INTERFACE_STA) | |
2693 | goto out; | |
2694 | ||
1ea893fd | 2695 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2696 | |
2697 | if (hdr->addr1[0] & 0x01) { | |
2698 | /* broadcast/multicast frame - no AP related processing */ | |
b9180990 PR |
2699 | if (local->ap->num_sta <= 0) |
2700 | ret = AP_TX_DROP; | |
ff1d2767 JM |
2701 | goto out; |
2702 | } | |
2703 | ||
2704 | /* unicast packet - check whether destination STA is associated */ | |
2705 | spin_lock(&local->ap->sta_table_lock); | |
2706 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2707 | if (sta) | |
2708 | atomic_inc(&sta->users); | |
2709 | spin_unlock(&local->ap->sta_table_lock); | |
2710 | ||
5bee720f JM |
2711 | if (local->iw_mode == IW_MODE_MASTER && sta == NULL && |
2712 | !(meta->flags & HOSTAP_TX_FLAGS_WDS) && | |
ff1d2767 JM |
2713 | meta->iface->type != HOSTAP_INTERFACE_MASTER && |
2714 | meta->iface->type != HOSTAP_INTERFACE_AP) { | |
2715 | #if 0 | |
2716 | /* This can happen, e.g., when wlan0 is added to a bridge and | |
2717 | * bridging code does not know which port is the correct target | |
2718 | * for a unicast frame. In this case, the packet is send to all | |
2719 | * ports of the bridge. Since this is a valid scenario, do not | |
2720 | * print out any errors here. */ | |
2721 | if (net_ratelimit()) { | |
2722 | printk(KERN_DEBUG "AP: drop packet to non-associated " | |
e174961c | 2723 | "STA %pM\n", hdr->addr1); |
ff1d2767 JM |
2724 | } |
2725 | #endif | |
2726 | local->ap->tx_drop_nonassoc++; | |
2727 | ret = AP_TX_DROP; | |
2728 | goto out; | |
2729 | } | |
2730 | ||
2731 | if (sta == NULL) | |
2732 | goto out; | |
2733 | ||
2734 | if (!(sta->flags & WLAN_STA_AUTHORIZED)) | |
2735 | ret = AP_TX_CONTINUE_NOT_AUTHORIZED; | |
2736 | ||
2737 | /* Set tx_rate if using host-based TX rate control */ | |
2738 | if (!local->fw_tx_rate_control) | |
2739 | local->ap->last_tx_rate = meta->rate = | |
2740 | ap_update_sta_tx_rate(sta, local->dev); | |
2741 | ||
2742 | if (local->iw_mode != IW_MODE_MASTER) | |
2743 | goto out; | |
2744 | ||
2745 | if (!(sta->flags & WLAN_STA_PS)) | |
2746 | goto out; | |
2747 | ||
5bee720f JM |
2748 | if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) { |
2749 | /* indicate to STA that more frames follow */ | |
1ea893fd | 2750 | hdr->frame_control |= |
c1b4aa3f | 2751 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
5bee720f | 2752 | } |
ff1d2767 | 2753 | |
5bee720f JM |
2754 | if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) { |
2755 | /* packet was already buffered and now send due to | |
2756 | * PS poll, so do not rebuffer it */ | |
2757 | goto out; | |
ff1d2767 JM |
2758 | } |
2759 | ||
2760 | if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) { | |
e174961c JB |
2761 | PDEBUG(DEBUG_PS, "%s: No more space in STA (%pM)'s" |
2762 | "PS mode buffer\n", | |
2763 | local->dev->name, sta->addr); | |
ff1d2767 JM |
2764 | /* Make sure that TIM is set for the station (it might not be |
2765 | * after AP wlan hw reset). */ | |
2766 | /* FIX: should fix hw reset to restore bits based on STA | |
2767 | * buffer state.. */ | |
2768 | hostap_set_tim(local, sta->aid, 1); | |
2769 | sta->flags |= WLAN_STA_TIM; | |
2770 | ret = AP_TX_DROP; | |
2771 | goto out; | |
2772 | } | |
2773 | ||
2774 | /* STA in PS mode, buffer frame for later delivery */ | |
2775 | set_tim = skb_queue_empty(&sta->tx_buf); | |
2776 | skb_queue_tail(&sta->tx_buf, skb); | |
2777 | /* FIX: could save RX time to skb and expire buffered frames after | |
2778 | * some time if STA does not poll for them */ | |
2779 | ||
2780 | if (set_tim) { | |
2781 | if (sta->flags & WLAN_STA_TIM) | |
2782 | PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n", | |
2783 | sta->aid); | |
2784 | hostap_set_tim(local, sta->aid, 1); | |
2785 | sta->flags |= WLAN_STA_TIM; | |
2786 | } | |
2787 | ||
2788 | ret = AP_TX_BUFFERED; | |
2789 | ||
2790 | out: | |
2791 | if (sta != NULL) { | |
2792 | if (ret == AP_TX_CONTINUE || | |
2793 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) { | |
2794 | sta->tx_packets++; | |
2795 | sta->tx_bytes += skb->len; | |
2796 | sta->last_tx = jiffies; | |
2797 | } | |
2798 | ||
2799 | if ((ret == AP_TX_CONTINUE || | |
2800 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) && | |
2801 | sta->crypt && tx->host_encrypt) { | |
2802 | tx->crypt = sta->crypt; | |
2803 | tx->sta_ptr = sta; /* hostap_handle_sta_release() will | |
2804 | * be called to release sta info | |
2805 | * later */ | |
2806 | } else | |
2807 | atomic_dec(&sta->users); | |
2808 | } | |
2809 | ||
2810 | return ret; | |
2811 | } | |
2812 | ||
2813 | ||
2814 | void hostap_handle_sta_release(void *ptr) | |
2815 | { | |
2816 | struct sta_info *sta = ptr; | |
2817 | atomic_dec(&sta->users); | |
2818 | } | |
2819 | ||
2820 | ||
2821 | /* Called only as a tasklet (software IRQ) */ | |
2822 | void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb) | |
2823 | { | |
2824 | struct sta_info *sta; | |
1ea893fd | 2825 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2826 | struct hostap_skb_tx_data *meta; |
2827 | ||
1ea893fd | 2828 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2829 | meta = (struct hostap_skb_tx_data *) skb->cb; |
2830 | ||
2831 | spin_lock(&local->ap->sta_table_lock); | |
2832 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2833 | if (!sta) { | |
2834 | spin_unlock(&local->ap->sta_table_lock); | |
e174961c | 2835 | PDEBUG(DEBUG_AP, "%s: Could not find STA %pM" |
0795af57 | 2836 | " for this TX error (@%lu)\n", |
e174961c | 2837 | local->dev->name, hdr->addr1, jiffies); |
ff1d2767 JM |
2838 | return; |
2839 | } | |
2840 | ||
2841 | sta->tx_since_last_failure = 0; | |
2842 | sta->tx_consecutive_exc++; | |
74fae82c | 2843 | |
ff1d2767 JM |
2844 | if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD && |
2845 | sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) { | |
2846 | /* use next lower rate */ | |
2847 | int old, rate; | |
2848 | old = rate = sta->tx_rate_idx; | |
2849 | while (rate > 0) { | |
2850 | rate--; | |
2851 | if (ap_tx_rate_ok(rate, sta, local)) { | |
2852 | sta->tx_rate_idx = rate; | |
2853 | break; | |
2854 | } | |
2855 | } | |
2856 | if (old != sta->tx_rate_idx) { | |
2857 | switch (sta->tx_rate_idx) { | |
2858 | case 0: sta->tx_rate = 10; break; | |
2859 | case 1: sta->tx_rate = 20; break; | |
2860 | case 2: sta->tx_rate = 55; break; | |
2861 | case 3: sta->tx_rate = 110; break; | |
2862 | default: sta->tx_rate = 0; break; | |
2863 | } | |
e174961c JB |
2864 | PDEBUG(DEBUG_AP, |
2865 | "%s: STA %pM TX rate lowered to %d\n", | |
2866 | local->dev->name, sta->addr, sta->tx_rate); | |
ff1d2767 JM |
2867 | } |
2868 | sta->tx_consecutive_exc = 0; | |
2869 | } | |
2870 | spin_unlock(&local->ap->sta_table_lock); | |
2871 | } | |
2872 | ||
2873 | ||
2874 | static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta, | |
2875 | int pwrmgt, int type, int stype) | |
2876 | { | |
2877 | if (pwrmgt && !(sta->flags & WLAN_STA_PS)) { | |
2878 | sta->flags |= WLAN_STA_PS; | |
e174961c | 2879 | PDEBUG(DEBUG_PS2, "STA %pM changed to use PS " |
ff1d2767 | 2880 | "mode (type=0x%02X, stype=0x%02X)\n", |
e174961c | 2881 | sta->addr, type >> 2, stype >> 4); |
ff1d2767 JM |
2882 | } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) { |
2883 | sta->flags &= ~WLAN_STA_PS; | |
e174961c | 2884 | PDEBUG(DEBUG_PS2, "STA %pM changed to not use " |
ff1d2767 | 2885 | "PS mode (type=0x%02X, stype=0x%02X)\n", |
e174961c | 2886 | sta->addr, type >> 2, stype >> 4); |
4339d328 JM |
2887 | if (type != IEEE80211_FTYPE_CTL || |
2888 | stype != IEEE80211_STYPE_PSPOLL) | |
ff1d2767 JM |
2889 | schedule_packet_send(local, sta); |
2890 | } | |
2891 | } | |
2892 | ||
2893 | ||
2894 | /* Called only as a tasklet (software IRQ). Called for each RX frame to update | |
1ea893fd DW |
2895 | * STA power saving state. pwrmgt is a flag from 802.11 frame_control field. */ |
2896 | int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr) | |
ff1d2767 JM |
2897 | { |
2898 | struct sta_info *sta; | |
2899 | u16 fc; | |
2900 | ||
2901 | spin_lock(&local->ap->sta_table_lock); | |
2902 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2903 | if (sta) | |
2904 | atomic_inc(&sta->users); | |
2905 | spin_unlock(&local->ap->sta_table_lock); | |
2906 | ||
2907 | if (!sta) | |
2908 | return -1; | |
2909 | ||
1ea893fd | 2910 | fc = le16_to_cpu(hdr->frame_control); |
b2f4a2e3 | 2911 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
1ea893fd DW |
2912 | fc & IEEE80211_FCTL_FTYPE, |
2913 | fc & IEEE80211_FCTL_STYPE); | |
ff1d2767 JM |
2914 | |
2915 | atomic_dec(&sta->users); | |
2916 | return 0; | |
2917 | } | |
2918 | ||
2919 | ||
2920 | /* Called only as a tasklet (software IRQ). Called for each RX frame after | |
2921 | * getting RX header and payload from hardware. */ | |
2922 | ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev, | |
2923 | struct sk_buff *skb, | |
2924 | struct hostap_80211_rx_status *rx_stats, | |
2925 | int wds) | |
2926 | { | |
2927 | int ret; | |
2928 | struct sta_info *sta; | |
2929 | u16 fc, type, stype; | |
1ea893fd | 2930 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2931 | |
2932 | if (local->ap == NULL) | |
2933 | return AP_RX_CONTINUE; | |
2934 | ||
1ea893fd | 2935 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 | 2936 | |
1ea893fd DW |
2937 | fc = le16_to_cpu(hdr->frame_control); |
2938 | type = fc & IEEE80211_FCTL_FTYPE; | |
2939 | stype = fc & IEEE80211_FCTL_STYPE; | |
ff1d2767 JM |
2940 | |
2941 | spin_lock(&local->ap->sta_table_lock); | |
2942 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2943 | if (sta) | |
2944 | atomic_inc(&sta->users); | |
2945 | spin_unlock(&local->ap->sta_table_lock); | |
2946 | ||
2947 | if (sta && !(sta->flags & WLAN_STA_AUTHORIZED)) | |
2948 | ret = AP_RX_CONTINUE_NOT_AUTHORIZED; | |
2949 | else | |
2950 | ret = AP_RX_CONTINUE; | |
2951 | ||
2952 | ||
b2f4a2e3 | 2953 | if (fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
2954 | if (!wds && (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) { |
2955 | if (local->hostapd) { | |
2956 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
2957 | PRISM2_RX_NON_ASSOC); | |
2958 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2959 | } else { | |
2960 | printk(KERN_DEBUG "%s: dropped received packet" | |
e174961c | 2961 | " from non-associated STA %pM" |
ff1d2767 | 2962 | " (type=0x%02x, subtype=0x%02x)\n", |
e174961c | 2963 | dev->name, hdr->addr2, |
4339d328 | 2964 | type >> 2, stype >> 4); |
ff1d2767 JM |
2965 | hostap_rx(dev, skb, rx_stats); |
2966 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2967 | } | |
2968 | ret = AP_RX_EXIT; | |
2969 | goto out; | |
2970 | } | |
b2f4a2e3 | 2971 | } else if (fc & IEEE80211_FCTL_FROMDS) { |
ff1d2767 JM |
2972 | if (!wds) { |
2973 | /* FromDS frame - not for us; probably | |
2974 | * broadcast/multicast in another BSS - drop */ | |
2975 | if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { | |
2976 | printk(KERN_DEBUG "Odd.. FromDS packet " | |
2977 | "received with own BSSID\n"); | |
2978 | hostap_dump_rx_80211(dev->name, skb, rx_stats); | |
2979 | } | |
2980 | ret = AP_RX_DROP; | |
2981 | goto out; | |
2982 | } | |
4339d328 | 2983 | } else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL && |
ff1d2767 JM |
2984 | memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { |
2985 | ||
2986 | if (local->hostapd) { | |
2987 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
2988 | PRISM2_RX_NON_ASSOC); | |
2989 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2990 | } else { | |
2991 | /* At least Lucent f/w seems to send data::nullfunc | |
2992 | * frames with no ToDS flag when the current AP returns | |
2993 | * after being unavailable for some time. Speed up | |
2994 | * re-association by informing the station about it not | |
2995 | * being associated. */ | |
e174961c JB |
2996 | printk(KERN_DEBUG "%s: rejected received nullfunc frame" |
2997 | " without ToDS from not associated STA %pM\n", | |
2998 | dev->name, hdr->addr2); | |
ff1d2767 JM |
2999 | hostap_rx(dev, skb, rx_stats); |
3000 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3001 | } | |
3002 | ret = AP_RX_EXIT; | |
3003 | goto out; | |
4339d328 | 3004 | } else if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
3005 | /* At least Lucent cards seem to send periodic nullfunc |
3006 | * frames with ToDS. Let these through to update SQ | |
3007 | * stats and PS state. Nullfunc frames do not contain | |
3008 | * any data and they will be dropped below. */ | |
3009 | } else { | |
3010 | /* If BSSID (Addr3) is foreign, this frame is a normal | |
3011 | * broadcast frame from an IBSS network. Drop it silently. | |
3012 | * If BSSID is own, report the dropping of this frame. */ | |
3013 | if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { | |
e174961c JB |
3014 | printk(KERN_DEBUG "%s: dropped received packet from %pM" |
3015 | " with no ToDS flag " | |
0795af57 | 3016 | "(type=0x%02x, subtype=0x%02x)\n", dev->name, |
e174961c | 3017 | hdr->addr2, type >> 2, stype >> 4); |
ff1d2767 JM |
3018 | hostap_dump_rx_80211(dev->name, skb, rx_stats); |
3019 | } | |
3020 | ret = AP_RX_DROP; | |
3021 | goto out; | |
3022 | } | |
3023 | ||
3024 | if (sta) { | |
b2f4a2e3 | 3025 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
ff1d2767 JM |
3026 | type, stype); |
3027 | ||
3028 | sta->rx_packets++; | |
3029 | sta->rx_bytes += skb->len; | |
3030 | sta->last_rx = jiffies; | |
3031 | } | |
3032 | ||
4339d328 | 3033 | if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC && |
b2f4a2e3 | 3034 | fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
3035 | if (local->hostapd) { |
3036 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
3037 | PRISM2_RX_NULLFUNC_ACK); | |
3038 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
3039 | } else { | |
3040 | /* some STA f/w's seem to require control::ACK frame | |
3041 | * for data::nullfunc, but Prism2 f/w 0.8.0 (at least | |
3042 | * from Compaq) does not send this.. Try to generate | |
3043 | * ACK for these frames from the host driver to make | |
3044 | * power saving work with, e.g., Lucent WaveLAN f/w */ | |
3045 | hostap_rx(dev, skb, rx_stats); | |
3046 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3047 | } | |
3048 | ret = AP_RX_EXIT; | |
3049 | goto out; | |
3050 | } | |
3051 | ||
3052 | out: | |
3053 | if (sta) | |
3054 | atomic_dec(&sta->users); | |
3055 | ||
3056 | return ret; | |
3057 | } | |
3058 | ||
3059 | ||
3060 | /* Called only as a tasklet (software IRQ) */ | |
3061 | int hostap_handle_sta_crypto(local_info_t *local, | |
1ea893fd | 3062 | struct ieee80211_hdr *hdr, |
274bfb8d | 3063 | struct lib80211_crypt_data **crypt, |
62fe7e37 | 3064 | void **sta_ptr) |
ff1d2767 JM |
3065 | { |
3066 | struct sta_info *sta; | |
3067 | ||
3068 | spin_lock(&local->ap->sta_table_lock); | |
3069 | sta = ap_get_sta(local->ap, hdr->addr2); | |
3070 | if (sta) | |
3071 | atomic_inc(&sta->users); | |
3072 | spin_unlock(&local->ap->sta_table_lock); | |
3073 | ||
3074 | if (!sta) | |
3075 | return -1; | |
3076 | ||
3077 | if (sta->crypt) { | |
3078 | *crypt = sta->crypt; | |
3079 | *sta_ptr = sta; | |
3080 | /* hostap_handle_sta_release() will be called to release STA | |
3081 | * info */ | |
3082 | } else | |
3083 | atomic_dec(&sta->users); | |
3084 | ||
3085 | return 0; | |
3086 | } | |
3087 | ||
3088 | ||
3089 | /* Called only as a tasklet (software IRQ) */ | |
3090 | int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr) | |
3091 | { | |
3092 | struct sta_info *sta; | |
3093 | int ret = 0; | |
3094 | ||
3095 | spin_lock(&ap->sta_table_lock); | |
3096 | sta = ap_get_sta(ap, sta_addr); | |
3097 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
3098 | ret = 1; | |
3099 | spin_unlock(&ap->sta_table_lock); | |
3100 | ||
3101 | return ret; | |
3102 | } | |
3103 | ||
3104 | ||
3105 | /* Called only as a tasklet (software IRQ) */ | |
3106 | int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr) | |
3107 | { | |
3108 | struct sta_info *sta; | |
3109 | int ret = 0; | |
3110 | ||
3111 | spin_lock(&ap->sta_table_lock); | |
3112 | sta = ap_get_sta(ap, sta_addr); | |
3113 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap && | |
3114 | ((sta->flags & WLAN_STA_AUTHORIZED) || | |
3115 | ap->local->ieee_802_1x == 0)) | |
3116 | ret = 1; | |
3117 | spin_unlock(&ap->sta_table_lock); | |
3118 | ||
3119 | return ret; | |
3120 | } | |
3121 | ||
3122 | ||
3123 | /* Called only as a tasklet (software IRQ) */ | |
3124 | int hostap_add_sta(struct ap_data *ap, u8 *sta_addr) | |
3125 | { | |
3126 | struct sta_info *sta; | |
3127 | int ret = 1; | |
3128 | ||
3129 | if (!ap) | |
3130 | return -1; | |
3131 | ||
3132 | spin_lock(&ap->sta_table_lock); | |
3133 | sta = ap_get_sta(ap, sta_addr); | |
3134 | if (sta) | |
3135 | ret = 0; | |
3136 | spin_unlock(&ap->sta_table_lock); | |
3137 | ||
3138 | if (ret == 1) { | |
3139 | sta = ap_add_sta(ap, sta_addr); | |
3140 | if (!sta) | |
54b85f48 | 3141 | return -1; |
ff1d2767 JM |
3142 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; |
3143 | sta->ap = 1; | |
3144 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
3145 | /* No way of knowing which rates are supported since we did not | |
3146 | * get supported rates element from beacon/assoc req. Assume | |
3147 | * that remote end supports all 802.11b rates. */ | |
3148 | sta->supported_rates[0] = 0x82; | |
3149 | sta->supported_rates[1] = 0x84; | |
3150 | sta->supported_rates[2] = 0x0b; | |
3151 | sta->supported_rates[3] = 0x16; | |
3152 | sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M | | |
3153 | WLAN_RATE_5M5 | WLAN_RATE_11M; | |
3154 | sta->tx_rate = 110; | |
3155 | sta->tx_max_rate = sta->tx_rate_idx = 3; | |
3156 | } | |
3157 | ||
3158 | return ret; | |
3159 | } | |
3160 | ||
3161 | ||
3162 | /* Called only as a tasklet (software IRQ) */ | |
3163 | int hostap_update_rx_stats(struct ap_data *ap, | |
1ea893fd | 3164 | struct ieee80211_hdr *hdr, |
ff1d2767 JM |
3165 | struct hostap_80211_rx_status *rx_stats) |
3166 | { | |
3167 | struct sta_info *sta; | |
3168 | ||
3169 | if (!ap) | |
3170 | return -1; | |
3171 | ||
3172 | spin_lock(&ap->sta_table_lock); | |
3173 | sta = ap_get_sta(ap, hdr->addr2); | |
3174 | if (sta) { | |
3175 | sta->last_rx_silence = rx_stats->noise; | |
3176 | sta->last_rx_signal = rx_stats->signal; | |
3177 | sta->last_rx_rate = rx_stats->rate; | |
c28df16e | 3178 | sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
ff1d2767 JM |
3179 | if (rx_stats->rate == 10) |
3180 | sta->rx_count[0]++; | |
3181 | else if (rx_stats->rate == 20) | |
3182 | sta->rx_count[1]++; | |
3183 | else if (rx_stats->rate == 55) | |
3184 | sta->rx_count[2]++; | |
3185 | else if (rx_stats->rate == 110) | |
3186 | sta->rx_count[3]++; | |
3187 | } | |
3188 | spin_unlock(&ap->sta_table_lock); | |
3189 | ||
3190 | return sta ? 0 : -1; | |
3191 | } | |
3192 | ||
3193 | ||
3194 | void hostap_update_rates(local_info_t *local) | |
3195 | { | |
c1505731 | 3196 | struct sta_info *sta; |
ff1d2767 JM |
3197 | struct ap_data *ap = local->ap; |
3198 | ||
3199 | if (!ap) | |
3200 | return; | |
3201 | ||
3202 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 3203 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
3204 | prism2_check_tx_rates(sta); |
3205 | } | |
3206 | spin_unlock_bh(&ap->sta_table_lock); | |
3207 | } | |
3208 | ||
3209 | ||
5fad5a2e | 3210 | void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent, |
274bfb8d | 3211 | struct lib80211_crypt_data ***crypt) |
ff1d2767 JM |
3212 | { |
3213 | struct sta_info *sta; | |
3214 | ||
3215 | spin_lock_bh(&ap->sta_table_lock); | |
3216 | sta = ap_get_sta(ap, addr); | |
3217 | if (sta) | |
3218 | atomic_inc(&sta->users); | |
3219 | spin_unlock_bh(&ap->sta_table_lock); | |
3220 | ||
3221 | if (!sta && permanent) | |
3222 | sta = ap_add_sta(ap, addr); | |
3223 | ||
3224 | if (!sta) | |
3225 | return NULL; | |
3226 | ||
3227 | if (permanent) | |
3228 | sta->flags |= WLAN_STA_PERM; | |
3229 | ||
3230 | *crypt = &sta->crypt; | |
3231 | ||
3232 | return sta; | |
3233 | } | |
3234 | ||
3235 | ||
3236 | void hostap_add_wds_links(local_info_t *local) | |
3237 | { | |
3238 | struct ap_data *ap = local->ap; | |
c1505731 | 3239 | struct sta_info *sta; |
ff1d2767 JM |
3240 | |
3241 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 3242 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
3243 | if (sta->ap) |
3244 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
3245 | } | |
3246 | spin_unlock_bh(&ap->sta_table_lock); | |
3247 | ||
3248 | schedule_work(&local->ap->wds_oper_queue); | |
3249 | } | |
3250 | ||
3251 | ||
3252 | void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type) | |
3253 | { | |
3254 | struct wds_oper_data *entry; | |
3255 | ||
3256 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
3257 | if (!entry) | |
3258 | return; | |
3259 | memcpy(entry->addr, addr, ETH_ALEN); | |
3260 | entry->type = type; | |
3261 | spin_lock_bh(&local->lock); | |
3262 | entry->next = local->ap->wds_oper_entries; | |
3263 | local->ap->wds_oper_entries = entry; | |
3264 | spin_unlock_bh(&local->lock); | |
3265 | ||
3266 | schedule_work(&local->ap->wds_oper_queue); | |
3267 | } | |
3268 | ||
3269 | ||
3270 | EXPORT_SYMBOL(hostap_init_data); | |
3271 | EXPORT_SYMBOL(hostap_init_ap_proc); | |
3272 | EXPORT_SYMBOL(hostap_free_data); | |
3273 | EXPORT_SYMBOL(hostap_check_sta_fw_version); | |
ff1d2767 | 3274 | EXPORT_SYMBOL(hostap_handle_sta_tx_exc); |
ff1d2767 | 3275 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
ff1d2767 | 3276 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |