Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
ff1d2767 JM |
2 | /* |
3 | * Intersil Prism2 driver with Host AP (software access point) support | |
4 | * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen | |
85d32e7b JM |
5 | * <j@w1.fi> |
6 | * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> | |
ff1d2767 JM |
7 | * |
8 | * This file is to be included into hostap.c when S/W AP functionality is | |
9 | * compiled. | |
10 | * | |
11 | * AP: FIX: | |
12 | * - if unicast Class 2 (assoc,reassoc,disassoc) frame received from | |
13 | * unauthenticated STA, send deauth. frame (8802.11: 5.5) | |
14 | * - if unicast Class 3 (data with to/from DS,deauth,pspoll) frame received | |
15 | * from authenticated, but unassoc STA, send disassoc frame (8802.11: 5.5) | |
16 | * - if unicast Class 3 received from unauthenticated STA, send deauth. frame | |
17 | * (8802.11: 5.5) | |
18 | */ | |
19 | ||
5fad5a2e | 20 | #include <linux/proc_fs.h> |
6bbefe86 | 21 | #include <linux/seq_file.h> |
5fad5a2e AB |
22 | #include <linux/delay.h> |
23 | #include <linux/random.h> | |
1ea893fd | 24 | #include <linux/if_arp.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
ee40fa06 | 26 | #include <linux/export.h> |
6eb07caf | 27 | #include <linux/moduleparam.h> |
d22fbd70 | 28 | #include <linux/etherdevice.h> |
5fad5a2e AB |
29 | |
30 | #include "hostap_wlan.h" | |
31 | #include "hostap.h" | |
32 | #include "hostap_ap.h" | |
33 | ||
ff1d2767 JM |
34 | static int other_ap_policy[MAX_PARM_DEVICES] = { AP_OTHER_AP_SKIP_ALL, |
35 | DEF_INTS }; | |
36 | module_param_array(other_ap_policy, int, NULL, 0444); | |
37 | MODULE_PARM_DESC(other_ap_policy, "Other AP beacon monitoring policy (0-3)"); | |
38 | ||
39 | static int ap_max_inactivity[MAX_PARM_DEVICES] = { AP_MAX_INACTIVITY_SEC, | |
40 | DEF_INTS }; | |
41 | module_param_array(ap_max_inactivity, int, NULL, 0444); | |
42 | MODULE_PARM_DESC(ap_max_inactivity, "AP timeout (in seconds) for station " | |
43 | "inactivity"); | |
44 | ||
45 | static int ap_bridge_packets[MAX_PARM_DEVICES] = { 1, DEF_INTS }; | |
46 | module_param_array(ap_bridge_packets, int, NULL, 0444); | |
47 | MODULE_PARM_DESC(ap_bridge_packets, "Bridge packets directly between " | |
48 | "stations"); | |
49 | ||
50 | static int autom_ap_wds[MAX_PARM_DEVICES] = { 0, DEF_INTS }; | |
51 | module_param_array(autom_ap_wds, int, NULL, 0444); | |
52 | MODULE_PARM_DESC(autom_ap_wds, "Add WDS connections to other APs " | |
53 | "automatically"); | |
54 | ||
55 | ||
56 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta); | |
57 | static void hostap_event_expired_sta(struct net_device *dev, | |
58 | struct sta_info *sta); | |
c4028958 | 59 | static void handle_add_proc_queue(struct work_struct *work); |
ff1d2767 JM |
60 | |
61 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 62 | static void handle_wds_oper_queue(struct work_struct *work); |
ff1d2767 | 63 | static void prism2_send_mgmt(struct net_device *dev, |
4339d328 | 64 | u16 type_subtype, char *body, |
ff1d2767 JM |
65 | int body_len, u8 *addr, u16 tx_cb_idx); |
66 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
67 | ||
68 | ||
69 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
6bbefe86 | 70 | static int ap_debug_proc_show(struct seq_file *m, void *v) |
ff1d2767 | 71 | { |
d5126959 | 72 | struct ap_data *ap = PDE_DATA(file_inode(m->file)); |
6bbefe86 DH |
73 | |
74 | seq_printf(m, "BridgedUnicastFrames=%u\n", ap->bridged_unicast); | |
75 | seq_printf(m, "BridgedMulticastFrames=%u\n", ap->bridged_multicast); | |
76 | seq_printf(m, "max_inactivity=%u\n", ap->max_inactivity / HZ); | |
77 | seq_printf(m, "bridge_packets=%u\n", ap->bridge_packets); | |
78 | seq_printf(m, "nullfunc_ack=%u\n", ap->nullfunc_ack); | |
79 | seq_printf(m, "autom_ap_wds=%u\n", ap->autom_ap_wds); | |
80 | seq_printf(m, "auth_algs=%u\n", ap->local->auth_algs); | |
81 | seq_printf(m, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc); | |
82 | return 0; | |
83 | } | |
ff1d2767 JM |
84 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
85 | ||
86 | ||
87 | static void ap_sta_hash_add(struct ap_data *ap, struct sta_info *sta) | |
88 | { | |
89 | sta->hnext = ap->sta_hash[STA_HASH(sta->addr)]; | |
90 | ap->sta_hash[STA_HASH(sta->addr)] = sta; | |
91 | } | |
92 | ||
93 | static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta) | |
94 | { | |
95 | struct sta_info *s; | |
96 | ||
97 | s = ap->sta_hash[STA_HASH(sta->addr)]; | |
98 | if (s == NULL) return; | |
d22fbd70 | 99 | if (ether_addr_equal(s->addr, sta->addr)) { |
ff1d2767 JM |
100 | ap->sta_hash[STA_HASH(sta->addr)] = s->hnext; |
101 | return; | |
102 | } | |
103 | ||
d22fbd70 | 104 | while (s->hnext != NULL && !ether_addr_equal(s->hnext->addr, sta->addr)) |
ff1d2767 JM |
105 | s = s->hnext; |
106 | if (s->hnext != NULL) | |
107 | s->hnext = s->hnext->hnext; | |
108 | else | |
e174961c JB |
109 | printk("AP: could not remove STA %pM from hash table\n", |
110 | sta->addr); | |
ff1d2767 JM |
111 | } |
112 | ||
113 | static void ap_free_sta(struct ap_data *ap, struct sta_info *sta) | |
114 | { | |
115 | if (sta->ap && sta->local) | |
116 | hostap_event_expired_sta(sta->local->dev, sta); | |
117 | ||
118 | if (ap->proc != NULL) { | |
119 | char name[20]; | |
e174961c | 120 | sprintf(name, "%pM", sta->addr); |
ff1d2767 JM |
121 | remove_proc_entry(name, ap->proc); |
122 | } | |
123 | ||
124 | if (sta->crypt) { | |
125 | sta->crypt->ops->deinit(sta->crypt->priv); | |
126 | kfree(sta->crypt); | |
127 | sta->crypt = NULL; | |
128 | } | |
129 | ||
130 | skb_queue_purge(&sta->tx_buf); | |
131 | ||
132 | ap->num_sta--; | |
133 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
134 | if (sta->aid > 0) | |
135 | ap->sta_aid[sta->aid - 1] = NULL; | |
136 | ||
6f24fe30 | 137 | if (!sta->ap) |
ff1d2767 | 138 | kfree(sta->u.sta.challenge); |
72471c0d | 139 | del_timer_sync(&sta->timer); |
ff1d2767 JM |
140 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
141 | ||
142 | kfree(sta); | |
143 | } | |
144 | ||
145 | ||
146 | static void hostap_set_tim(local_info_t *local, int aid, int set) | |
147 | { | |
148 | if (local->func->set_tim) | |
149 | local->func->set_tim(local->dev, aid, set); | |
150 | } | |
151 | ||
152 | ||
153 | static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta) | |
154 | { | |
155 | union iwreq_data wrqu; | |
156 | memset(&wrqu, 0, sizeof(wrqu)); | |
157 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
158 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
159 | wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL); | |
160 | } | |
161 | ||
162 | ||
163 | static void hostap_event_expired_sta(struct net_device *dev, | |
164 | struct sta_info *sta) | |
165 | { | |
166 | union iwreq_data wrqu; | |
167 | memset(&wrqu, 0, sizeof(wrqu)); | |
168 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); | |
169 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
170 | wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL); | |
171 | } | |
172 | ||
173 | ||
174 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
175 | ||
e99e88a9 | 176 | static void ap_handle_timer(struct timer_list *t) |
ff1d2767 | 177 | { |
e99e88a9 | 178 | struct sta_info *sta = from_timer(sta, t, timer); |
ff1d2767 JM |
179 | local_info_t *local; |
180 | struct ap_data *ap; | |
181 | unsigned long next_time = 0; | |
182 | int was_assoc; | |
183 | ||
184 | if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) { | |
185 | PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n"); | |
186 | return; | |
187 | } | |
188 | ||
189 | local = sta->local; | |
190 | ap = local->ap; | |
191 | was_assoc = sta->flags & WLAN_STA_ASSOC; | |
192 | ||
193 | if (atomic_read(&sta->users) != 0) | |
194 | next_time = jiffies + HZ; | |
195 | else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH)) | |
196 | next_time = jiffies + ap->max_inactivity; | |
197 | ||
198 | if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) { | |
199 | /* station activity detected; reset timeout state */ | |
200 | sta->timeout_next = STA_NULLFUNC; | |
201 | next_time = sta->last_rx + ap->max_inactivity; | |
202 | } else if (sta->timeout_next == STA_DISASSOC && | |
203 | !(sta->flags & WLAN_STA_PENDING_POLL)) { | |
204 | /* STA ACKed data nullfunc frame poll */ | |
205 | sta->timeout_next = STA_NULLFUNC; | |
206 | next_time = jiffies + ap->max_inactivity; | |
207 | } | |
208 | ||
209 | if (next_time) { | |
210 | sta->timer.expires = next_time; | |
211 | add_timer(&sta->timer); | |
212 | return; | |
213 | } | |
214 | ||
215 | if (sta->ap) | |
216 | sta->timeout_next = STA_DEAUTH; | |
217 | ||
218 | if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) { | |
219 | spin_lock(&ap->sta_table_lock); | |
220 | ap_sta_hash_del(ap, sta); | |
221 | list_del(&sta->list); | |
222 | spin_unlock(&ap->sta_table_lock); | |
223 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
224 | } else if (sta->timeout_next == STA_DISASSOC) | |
225 | sta->flags &= ~WLAN_STA_ASSOC; | |
226 | ||
227 | if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
228 | hostap_event_expired_sta(local->dev, sta); | |
229 | ||
230 | if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 && | |
231 | !skb_queue_empty(&sta->tx_buf)) { | |
232 | hostap_set_tim(local, sta->aid, 0); | |
233 | sta->flags &= ~WLAN_STA_TIM; | |
234 | } | |
235 | ||
236 | if (sta->ap) { | |
237 | if (ap->autom_ap_wds) { | |
238 | PDEBUG(DEBUG_AP, "%s: removing automatic WDS " | |
e174961c JB |
239 | "connection to AP %pM\n", |
240 | local->dev->name, sta->addr); | |
ff1d2767 JM |
241 | hostap_wds_link_oper(local, sta->addr, WDS_DEL); |
242 | } | |
243 | } else if (sta->timeout_next == STA_NULLFUNC) { | |
244 | /* send data frame to poll STA and check whether this frame | |
245 | * is ACKed */ | |
4339d328 | 246 | /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but |
ff1d2767 JM |
247 | * it is apparently not retried so TX Exc events are not |
248 | * received for it */ | |
249 | sta->flags |= WLAN_STA_PENDING_POLL; | |
4339d328 JM |
250 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA | |
251 | IEEE80211_STYPE_DATA, NULL, 0, | |
ff1d2767 JM |
252 | sta->addr, ap->tx_callback_poll); |
253 | } else { | |
254 | int deauth = sta->timeout_next == STA_DEAUTH; | |
8a9faf3c | 255 | __le16 resp; |
e174961c | 256 | PDEBUG(DEBUG_AP, "%s: sending %s info to STA %pM" |
ff1d2767 JM |
257 | "(last=%lu, jiffies=%lu)\n", |
258 | local->dev->name, | |
259 | deauth ? "deauthentication" : "disassociation", | |
e174961c | 260 | sta->addr, sta->last_rx, jiffies); |
ff1d2767 JM |
261 | |
262 | resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID : | |
263 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
4339d328 JM |
264 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT | |
265 | (deauth ? IEEE80211_STYPE_DEAUTH : | |
266 | IEEE80211_STYPE_DISASSOC), | |
ff1d2767 JM |
267 | (char *) &resp, 2, sta->addr, 0); |
268 | } | |
269 | ||
270 | if (sta->timeout_next == STA_DEAUTH) { | |
271 | if (sta->flags & WLAN_STA_PERM) { | |
e174961c | 272 | PDEBUG(DEBUG_AP, "%s: STA %pM" |
0795af57 JP |
273 | " would have been removed, " |
274 | "but it has 'perm' flag\n", | |
e174961c | 275 | local->dev->name, sta->addr); |
ff1d2767 JM |
276 | } else |
277 | ap_free_sta(ap, sta); | |
278 | return; | |
279 | } | |
280 | ||
281 | if (sta->timeout_next == STA_NULLFUNC) { | |
282 | sta->timeout_next = STA_DISASSOC; | |
283 | sta->timer.expires = jiffies + AP_DISASSOC_DELAY; | |
284 | } else { | |
285 | sta->timeout_next = STA_DEAUTH; | |
286 | sta->timer.expires = jiffies + AP_DEAUTH_DELAY; | |
287 | } | |
288 | ||
289 | add_timer(&sta->timer); | |
290 | } | |
291 | ||
292 | ||
293 | void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap, | |
294 | int resend) | |
295 | { | |
296 | u8 addr[ETH_ALEN]; | |
8a9faf3c | 297 | __le16 resp; |
ff1d2767 JM |
298 | int i; |
299 | ||
300 | PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name); | |
93803b33 | 301 | eth_broadcast_addr(addr); |
ff1d2767 | 302 | |
8a9faf3c | 303 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); |
ff1d2767 JM |
304 | |
305 | /* deauth message sent; try to resend it few times; the message is | |
306 | * broadcast, so it may be delayed until next DTIM; there is not much | |
307 | * else we can do at this point since the driver is going to be shut | |
308 | * down */ | |
309 | for (i = 0; i < 5; i++) { | |
4339d328 JM |
310 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
311 | IEEE80211_STYPE_DEAUTH, | |
ff1d2767 JM |
312 | (char *) &resp, 2, addr, 0); |
313 | ||
314 | if (!resend || ap->num_sta <= 0) | |
315 | return; | |
316 | ||
317 | mdelay(50); | |
318 | } | |
319 | } | |
320 | ||
321 | ||
6bbefe86 | 322 | static int ap_control_proc_show(struct seq_file *m, void *v) |
ff1d2767 | 323 | { |
d5126959 | 324 | struct ap_data *ap = PDE_DATA(file_inode(m->file)); |
ff1d2767 | 325 | char *policy_txt; |
ff1d2767 JM |
326 | struct mac_entry *entry; |
327 | ||
6bbefe86 DH |
328 | if (v == SEQ_START_TOKEN) { |
329 | switch (ap->mac_restrictions.policy) { | |
330 | case MAC_POLICY_OPEN: | |
331 | policy_txt = "open"; | |
332 | break; | |
333 | case MAC_POLICY_ALLOW: | |
334 | policy_txt = "allow"; | |
335 | break; | |
336 | case MAC_POLICY_DENY: | |
337 | policy_txt = "deny"; | |
338 | break; | |
339 | default: | |
340 | policy_txt = "unknown"; | |
341 | break; | |
342 | } | |
343 | seq_printf(m, "MAC policy: %s\n", policy_txt); | |
344 | seq_printf(m, "MAC entries: %u\n", ap->mac_restrictions.entries); | |
345 | seq_puts(m, "MAC list:\n"); | |
ff1d2767 JM |
346 | return 0; |
347 | } | |
348 | ||
6bbefe86 DH |
349 | entry = v; |
350 | seq_printf(m, "%pM\n", entry->addr); | |
351 | return 0; | |
352 | } | |
353 | ||
354 | static void *ap_control_proc_start(struct seq_file *m, loff_t *_pos) | |
355 | { | |
d5126959 | 356 | struct ap_data *ap = PDE_DATA(file_inode(m->file)); |
ff1d2767 | 357 | spin_lock_bh(&ap->mac_restrictions.lock); |
6bbefe86 DH |
358 | return seq_list_start_head(&ap->mac_restrictions.mac_list, *_pos); |
359 | } | |
ff1d2767 | 360 | |
6bbefe86 DH |
361 | static void *ap_control_proc_next(struct seq_file *m, void *v, loff_t *_pos) |
362 | { | |
d5126959 | 363 | struct ap_data *ap = PDE_DATA(file_inode(m->file)); |
6bbefe86 DH |
364 | return seq_list_next(v, &ap->mac_restrictions.mac_list, _pos); |
365 | } | |
366 | ||
367 | static void ap_control_proc_stop(struct seq_file *m, void *v) | |
368 | { | |
d5126959 | 369 | struct ap_data *ap = PDE_DATA(file_inode(m->file)); |
ff1d2767 | 370 | spin_unlock_bh(&ap->mac_restrictions.lock); |
6bbefe86 DH |
371 | } |
372 | ||
373 | static const struct seq_operations ap_control_proc_seqops = { | |
374 | .start = ap_control_proc_start, | |
375 | .next = ap_control_proc_next, | |
376 | .stop = ap_control_proc_stop, | |
377 | .show = ap_control_proc_show, | |
378 | }; | |
ff1d2767 | 379 | |
5fad5a2e | 380 | int ap_control_add_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
ff1d2767 JM |
381 | { |
382 | struct mac_entry *entry; | |
383 | ||
384 | entry = kmalloc(sizeof(struct mac_entry), GFP_KERNEL); | |
385 | if (entry == NULL) | |
b53cf458 | 386 | return -ENOMEM; |
ff1d2767 JM |
387 | |
388 | memcpy(entry->addr, mac, ETH_ALEN); | |
389 | ||
390 | spin_lock_bh(&mac_restrictions->lock); | |
391 | list_add_tail(&entry->list, &mac_restrictions->mac_list); | |
392 | mac_restrictions->entries++; | |
393 | spin_unlock_bh(&mac_restrictions->lock); | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
398 | ||
5fad5a2e | 399 | int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
ff1d2767 JM |
400 | { |
401 | struct list_head *ptr; | |
402 | struct mac_entry *entry; | |
403 | ||
404 | spin_lock_bh(&mac_restrictions->lock); | |
405 | for (ptr = mac_restrictions->mac_list.next; | |
406 | ptr != &mac_restrictions->mac_list; ptr = ptr->next) { | |
407 | entry = list_entry(ptr, struct mac_entry, list); | |
408 | ||
d22fbd70 | 409 | if (ether_addr_equal(entry->addr, mac)) { |
ff1d2767 JM |
410 | list_del(ptr); |
411 | kfree(entry); | |
412 | mac_restrictions->entries--; | |
413 | spin_unlock_bh(&mac_restrictions->lock); | |
414 | return 0; | |
415 | } | |
416 | } | |
417 | spin_unlock_bh(&mac_restrictions->lock); | |
418 | return -1; | |
419 | } | |
420 | ||
421 | ||
422 | static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions, | |
423 | u8 *mac) | |
424 | { | |
ff1d2767 JM |
425 | struct mac_entry *entry; |
426 | int found = 0; | |
427 | ||
428 | if (mac_restrictions->policy == MAC_POLICY_OPEN) | |
429 | return 0; | |
430 | ||
431 | spin_lock_bh(&mac_restrictions->lock); | |
c1505731 | 432 | list_for_each_entry(entry, &mac_restrictions->mac_list, list) { |
d22fbd70 | 433 | if (ether_addr_equal(entry->addr, mac)) { |
ff1d2767 JM |
434 | found = 1; |
435 | break; | |
436 | } | |
437 | } | |
438 | spin_unlock_bh(&mac_restrictions->lock); | |
439 | ||
440 | if (mac_restrictions->policy == MAC_POLICY_ALLOW) | |
441 | return !found; | |
442 | else | |
443 | return found; | |
444 | } | |
445 | ||
446 | ||
5fad5a2e | 447 | void ap_control_flush_macs(struct mac_restrictions *mac_restrictions) |
ff1d2767 JM |
448 | { |
449 | struct list_head *ptr, *n; | |
450 | struct mac_entry *entry; | |
451 | ||
452 | if (mac_restrictions->entries == 0) | |
453 | return; | |
454 | ||
455 | spin_lock_bh(&mac_restrictions->lock); | |
456 | for (ptr = mac_restrictions->mac_list.next, n = ptr->next; | |
457 | ptr != &mac_restrictions->mac_list; | |
458 | ptr = n, n = ptr->next) { | |
459 | entry = list_entry(ptr, struct mac_entry, list); | |
460 | list_del(ptr); | |
461 | kfree(entry); | |
462 | } | |
463 | mac_restrictions->entries = 0; | |
464 | spin_unlock_bh(&mac_restrictions->lock); | |
465 | } | |
466 | ||
467 | ||
5fad5a2e | 468 | int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac) |
ff1d2767 JM |
469 | { |
470 | struct sta_info *sta; | |
8a9faf3c | 471 | __le16 resp; |
ff1d2767 JM |
472 | |
473 | spin_lock_bh(&ap->sta_table_lock); | |
474 | sta = ap_get_sta(ap, mac); | |
475 | if (sta) { | |
476 | ap_sta_hash_del(ap, sta); | |
477 | list_del(&sta->list); | |
478 | } | |
479 | spin_unlock_bh(&ap->sta_table_lock); | |
480 | ||
481 | if (!sta) | |
482 | return -EINVAL; | |
483 | ||
484 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); | |
4339d328 | 485 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH, |
ff1d2767 JM |
486 | (char *) &resp, 2, sta->addr, 0); |
487 | ||
488 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
489 | hostap_event_expired_sta(dev, sta); | |
490 | ||
491 | ap_free_sta(ap, sta); | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
496 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
497 | ||
498 | ||
5fad5a2e | 499 | void ap_control_kickall(struct ap_data *ap) |
ff1d2767 JM |
500 | { |
501 | struct list_head *ptr, *n; | |
502 | struct sta_info *sta; | |
74fae82c | 503 | |
ff1d2767 JM |
504 | spin_lock_bh(&ap->sta_table_lock); |
505 | for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list; | |
506 | ptr = n, n = ptr->next) { | |
507 | sta = list_entry(ptr, struct sta_info, list); | |
508 | ap_sta_hash_del(ap, sta); | |
509 | list_del(&sta->list); | |
510 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
511 | hostap_event_expired_sta(sta->local->dev, sta); | |
512 | ap_free_sta(ap, sta); | |
513 | } | |
514 | spin_unlock_bh(&ap->sta_table_lock); | |
515 | } | |
516 | ||
517 | ||
518 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
519 | ||
6bbefe86 | 520 | static int prism2_ap_proc_show(struct seq_file *m, void *v) |
ff1d2767 | 521 | { |
6bbefe86 | 522 | struct sta_info *sta = v; |
ff1d2767 JM |
523 | int i; |
524 | ||
6bbefe86 DH |
525 | if (v == SEQ_START_TOKEN) { |
526 | seq_printf(m, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n"); | |
ff1d2767 JM |
527 | return 0; |
528 | } | |
529 | ||
6bbefe86 | 530 | if (!sta->ap) |
ff1d2767 | 531 | return 0; |
6bbefe86 DH |
532 | |
533 | seq_printf(m, "%pM %d %d %d %d '", | |
534 | sta->addr, | |
535 | sta->u.ap.channel, sta->last_rx_signal, | |
536 | sta->last_rx_silence, sta->last_rx_rate); | |
537 | ||
538 | for (i = 0; i < sta->u.ap.ssid_len; i++) { | |
539 | if (sta->u.ap.ssid[i] >= 32 && sta->u.ap.ssid[i] < 127) | |
540 | seq_putc(m, sta->u.ap.ssid[i]); | |
541 | else | |
542 | seq_printf(m, "<%02x>", sta->u.ap.ssid[i]); | |
ff1d2767 JM |
543 | } |
544 | ||
6bbefe86 DH |
545 | seq_putc(m, '\''); |
546 | if (sta->capability & WLAN_CAPABILITY_ESS) | |
547 | seq_puts(m, " [ESS]"); | |
548 | if (sta->capability & WLAN_CAPABILITY_IBSS) | |
549 | seq_puts(m, " [IBSS]"); | |
550 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
551 | seq_puts(m, " [WEP]"); | |
552 | seq_putc(m, '\n'); | |
553 | return 0; | |
554 | } | |
ff1d2767 | 555 | |
6bbefe86 DH |
556 | static void *prism2_ap_proc_start(struct seq_file *m, loff_t *_pos) |
557 | { | |
d5126959 | 558 | struct ap_data *ap = PDE_DATA(file_inode(m->file)); |
6bbefe86 DH |
559 | spin_lock_bh(&ap->sta_table_lock); |
560 | return seq_list_start_head(&ap->sta_list, *_pos); | |
561 | } | |
562 | ||
563 | static void *prism2_ap_proc_next(struct seq_file *m, void *v, loff_t *_pos) | |
564 | { | |
d5126959 | 565 | struct ap_data *ap = PDE_DATA(file_inode(m->file)); |
6bbefe86 | 566 | return seq_list_next(v, &ap->sta_list, _pos); |
ff1d2767 | 567 | } |
6bbefe86 DH |
568 | |
569 | static void prism2_ap_proc_stop(struct seq_file *m, void *v) | |
570 | { | |
d5126959 | 571 | struct ap_data *ap = PDE_DATA(file_inode(m->file)); |
6bbefe86 DH |
572 | spin_unlock_bh(&ap->sta_table_lock); |
573 | } | |
574 | ||
575 | static const struct seq_operations prism2_ap_proc_seqops = { | |
576 | .start = prism2_ap_proc_start, | |
577 | .next = prism2_ap_proc_next, | |
578 | .stop = prism2_ap_proc_stop, | |
579 | .show = prism2_ap_proc_show, | |
580 | }; | |
ff1d2767 JM |
581 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
582 | ||
583 | ||
584 | void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver) | |
585 | { | |
586 | if (!ap) | |
587 | return; | |
588 | ||
589 | if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) { | |
590 | PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - " | |
591 | "firmware upgrade recommended\n"); | |
592 | ap->nullfunc_ack = 1; | |
593 | } else | |
594 | ap->nullfunc_ack = 0; | |
595 | ||
596 | if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) { | |
597 | printk(KERN_WARNING "%s: Warning: secondary station firmware " | |
598 | "version 1.4.2 does not seem to work in Host AP mode\n", | |
599 | ap->local->dev->name); | |
600 | } | |
601 | } | |
602 | ||
603 | ||
604 | /* Called only as a tasklet (software IRQ) */ | |
605 | static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data) | |
606 | { | |
607 | struct ap_data *ap = data; | |
1ea893fd | 608 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
609 | |
610 | if (!ap->local->hostapd || !ap->local->apdev) { | |
611 | dev_kfree_skb(skb); | |
612 | return; | |
613 | } | |
614 | ||
ff1d2767 JM |
615 | /* Pass the TX callback frame to the hostapd; use 802.11 header version |
616 | * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */ | |
617 | ||
1ea893fd DW |
618 | hdr = (struct ieee80211_hdr *) skb->data; |
619 | hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_VERS); | |
620 | hdr->frame_control |= cpu_to_le16(ok ? BIT(1) : BIT(0)); | |
ff1d2767 JM |
621 | |
622 | skb->dev = ap->local->apdev; | |
1ea893fd | 623 | skb_pull(skb, hostap_80211_get_hdrlen(hdr->frame_control)); |
ff1d2767 | 624 | skb->pkt_type = PACKET_OTHERHOST; |
c1b4aa3f | 625 | skb->protocol = cpu_to_be16(ETH_P_802_2); |
ff1d2767 JM |
626 | memset(skb->cb, 0, sizeof(skb->cb)); |
627 | netif_rx(skb); | |
628 | } | |
629 | ||
630 | ||
631 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
632 | /* Called only as a tasklet (software IRQ) */ | |
633 | static void hostap_ap_tx_cb_auth(struct sk_buff *skb, int ok, void *data) | |
634 | { | |
635 | struct ap_data *ap = data; | |
636 | struct net_device *dev = ap->local->dev; | |
1ea893fd DW |
637 | struct ieee80211_hdr *hdr; |
638 | u16 auth_alg, auth_transaction, status; | |
8a9faf3c | 639 | __le16 *pos; |
ff1d2767 JM |
640 | struct sta_info *sta = NULL; |
641 | char *txt = NULL; | |
642 | ||
643 | if (ap->local->hostapd) { | |
644 | dev_kfree_skb(skb); | |
645 | return; | |
646 | } | |
647 | ||
1ea893fd DW |
648 | hdr = (struct ieee80211_hdr *) skb->data; |
649 | if (!ieee80211_is_auth(hdr->frame_control) || | |
ff1d2767 JM |
650 | skb->len < IEEE80211_MGMT_HDR_LEN + 6) { |
651 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_auth received invalid " | |
652 | "frame\n", dev->name); | |
653 | dev_kfree_skb(skb); | |
654 | return; | |
655 | } | |
656 | ||
8a9faf3c | 657 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
658 | auth_alg = le16_to_cpu(*pos++); |
659 | auth_transaction = le16_to_cpu(*pos++); | |
660 | status = le16_to_cpu(*pos++); | |
661 | ||
662 | if (!ok) { | |
663 | txt = "frame was not ACKed"; | |
664 | goto done; | |
665 | } | |
666 | ||
667 | spin_lock(&ap->sta_table_lock); | |
668 | sta = ap_get_sta(ap, hdr->addr1); | |
669 | if (sta) | |
670 | atomic_inc(&sta->users); | |
671 | spin_unlock(&ap->sta_table_lock); | |
672 | ||
673 | if (!sta) { | |
674 | txt = "STA not found"; | |
675 | goto done; | |
676 | } | |
677 | ||
678 | if (status == WLAN_STATUS_SUCCESS && | |
679 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || | |
680 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { | |
681 | txt = "STA authenticated"; | |
682 | sta->flags |= WLAN_STA_AUTH; | |
683 | sta->last_auth = jiffies; | |
684 | } else if (status != WLAN_STATUS_SUCCESS) | |
685 | txt = "authentication failed"; | |
686 | ||
687 | done: | |
688 | if (sta) | |
689 | atomic_dec(&sta->users); | |
690 | if (txt) { | |
e174961c | 691 | PDEBUG(DEBUG_AP, "%s: %pM auth_cb - alg=%d " |
0795af57 | 692 | "trans#=%d status=%d - %s\n", |
e174961c | 693 | dev->name, hdr->addr1, |
21f644f3 | 694 | auth_alg, auth_transaction, status, txt); |
ff1d2767 JM |
695 | } |
696 | dev_kfree_skb(skb); | |
697 | } | |
698 | ||
699 | ||
700 | /* Called only as a tasklet (software IRQ) */ | |
701 | static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data) | |
702 | { | |
703 | struct ap_data *ap = data; | |
704 | struct net_device *dev = ap->local->dev; | |
1ea893fd | 705 | struct ieee80211_hdr *hdr; |
1baf8a90 | 706 | u16 status; |
8a9faf3c | 707 | __le16 *pos; |
ff1d2767 JM |
708 | struct sta_info *sta = NULL; |
709 | char *txt = NULL; | |
710 | ||
711 | if (ap->local->hostapd) { | |
712 | dev_kfree_skb(skb); | |
713 | return; | |
714 | } | |
715 | ||
1ea893fd | 716 | hdr = (struct ieee80211_hdr *) skb->data; |
1ea893fd DW |
717 | if ((!ieee80211_is_assoc_resp(hdr->frame_control) && |
718 | !ieee80211_is_reassoc_resp(hdr->frame_control)) || | |
ff1d2767 JM |
719 | skb->len < IEEE80211_MGMT_HDR_LEN + 4) { |
720 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid " | |
721 | "frame\n", dev->name); | |
722 | dev_kfree_skb(skb); | |
723 | return; | |
724 | } | |
725 | ||
726 | if (!ok) { | |
727 | txt = "frame was not ACKed"; | |
728 | goto done; | |
729 | } | |
730 | ||
731 | spin_lock(&ap->sta_table_lock); | |
732 | sta = ap_get_sta(ap, hdr->addr1); | |
733 | if (sta) | |
734 | atomic_inc(&sta->users); | |
735 | spin_unlock(&ap->sta_table_lock); | |
736 | ||
737 | if (!sta) { | |
738 | txt = "STA not found"; | |
739 | goto done; | |
740 | } | |
741 | ||
8a9faf3c | 742 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
743 | pos++; |
744 | status = le16_to_cpu(*pos++); | |
745 | if (status == WLAN_STATUS_SUCCESS) { | |
746 | if (!(sta->flags & WLAN_STA_ASSOC)) | |
747 | hostap_event_new_sta(dev, sta); | |
748 | txt = "STA associated"; | |
749 | sta->flags |= WLAN_STA_ASSOC; | |
750 | sta->last_assoc = jiffies; | |
751 | } else | |
752 | txt = "association failed"; | |
753 | ||
754 | done: | |
755 | if (sta) | |
756 | atomic_dec(&sta->users); | |
757 | if (txt) { | |
e174961c JB |
758 | PDEBUG(DEBUG_AP, "%s: %pM assoc_cb - %s\n", |
759 | dev->name, hdr->addr1, txt); | |
ff1d2767 JM |
760 | } |
761 | dev_kfree_skb(skb); | |
762 | } | |
763 | ||
764 | /* Called only as a tasklet (software IRQ); TX callback for poll frames used | |
765 | * in verifying whether the STA is still present. */ | |
766 | static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data) | |
767 | { | |
768 | struct ap_data *ap = data; | |
1ea893fd | 769 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
770 | struct sta_info *sta; |
771 | ||
772 | if (skb->len < 24) | |
773 | goto fail; | |
1ea893fd | 774 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
775 | if (ok) { |
776 | spin_lock(&ap->sta_table_lock); | |
777 | sta = ap_get_sta(ap, hdr->addr1); | |
778 | if (sta) | |
779 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
780 | spin_unlock(&ap->sta_table_lock); | |
781 | } else { | |
e174961c JB |
782 | PDEBUG(DEBUG_AP, |
783 | "%s: STA %pM did not ACK activity poll frame\n", | |
784 | ap->local->dev->name, hdr->addr1); | |
ff1d2767 JM |
785 | } |
786 | ||
787 | fail: | |
788 | dev_kfree_skb(skb); | |
789 | } | |
790 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
791 | ||
792 | ||
793 | void hostap_init_data(local_info_t *local) | |
794 | { | |
795 | struct ap_data *ap = local->ap; | |
796 | ||
797 | if (ap == NULL) { | |
798 | printk(KERN_WARNING "hostap_init_data: ap == NULL\n"); | |
799 | return; | |
800 | } | |
801 | memset(ap, 0, sizeof(struct ap_data)); | |
802 | ap->local = local; | |
803 | ||
804 | ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx); | |
805 | ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx); | |
806 | ap->max_inactivity = | |
807 | GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ; | |
808 | ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx); | |
809 | ||
810 | spin_lock_init(&ap->sta_table_lock); | |
811 | INIT_LIST_HEAD(&ap->sta_list); | |
812 | ||
813 | /* Initialize task queue structure for AP management */ | |
c4028958 | 814 | INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue); |
ff1d2767 JM |
815 | |
816 | ap->tx_callback_idx = | |
817 | hostap_tx_callback_register(local, hostap_ap_tx_cb, ap); | |
818 | if (ap->tx_callback_idx == 0) | |
819 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
820 | "AP\n", local->dev->name); | |
821 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
c4028958 | 822 | INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue); |
ff1d2767 JM |
823 | |
824 | ap->tx_callback_auth = | |
825 | hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap); | |
826 | ap->tx_callback_assoc = | |
827 | hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap); | |
828 | ap->tx_callback_poll = | |
829 | hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap); | |
830 | if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 || | |
831 | ap->tx_callback_poll == 0) | |
832 | printk(KERN_WARNING "%s: failed to register TX callback for " | |
833 | "AP\n", local->dev->name); | |
834 | ||
835 | spin_lock_init(&ap->mac_restrictions.lock); | |
836 | INIT_LIST_HEAD(&ap->mac_restrictions.mac_list); | |
837 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
838 | ||
839 | ap->initialized = 1; | |
840 | } | |
841 | ||
842 | ||
843 | void hostap_init_ap_proc(local_info_t *local) | |
844 | { | |
845 | struct ap_data *ap = local->ap; | |
846 | ||
847 | ap->proc = local->proc; | |
848 | if (ap->proc == NULL) | |
849 | return; | |
850 | ||
851 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
d5126959 | 852 | proc_create_single_data("ap_debug", 0, ap->proc, ap_debug_proc_show, ap); |
ff1d2767 JM |
853 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
854 | ||
855 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
d5126959 CH |
856 | proc_create_seq_data("ap_control", 0, ap->proc, &ap_control_proc_seqops, |
857 | ap); | |
858 | proc_create_seq_data("ap", 0, ap->proc, &prism2_ap_proc_seqops, ap); | |
ff1d2767 JM |
859 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
860 | ||
861 | } | |
862 | ||
863 | ||
864 | void hostap_free_data(struct ap_data *ap) | |
865 | { | |
c1505731 | 866 | struct sta_info *n, *sta; |
ff1d2767 JM |
867 | |
868 | if (ap == NULL || !ap->initialized) { | |
869 | printk(KERN_DEBUG "hostap_free_data: ap has not yet been " | |
870 | "initialized - skip resource freeing\n"); | |
871 | return; | |
872 | } | |
873 | ||
43829731 | 874 | flush_work(&ap->add_sta_proc_queue); |
16359533 | 875 | |
ff1d2767 | 876 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
43829731 | 877 | flush_work(&ap->wds_oper_queue); |
ff1d2767 JM |
878 | if (ap->crypt) |
879 | ap->crypt->deinit(ap->crypt_priv); | |
880 | ap->crypt = ap->crypt_priv = NULL; | |
881 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
882 | ||
c1505731 | 883 | list_for_each_entry_safe(sta, n, &ap->sta_list, list) { |
ff1d2767 JM |
884 | ap_sta_hash_del(ap, sta); |
885 | list_del(&sta->list); | |
886 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
887 | hostap_event_expired_sta(sta->local->dev, sta); | |
888 | ap_free_sta(ap, sta); | |
889 | } | |
890 | ||
891 | #ifndef PRISM2_NO_PROCFS_DEBUG | |
892 | if (ap->proc != NULL) { | |
893 | remove_proc_entry("ap_debug", ap->proc); | |
894 | } | |
895 | #endif /* PRISM2_NO_PROCFS_DEBUG */ | |
896 | ||
897 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
898 | if (ap->proc != NULL) { | |
899 | remove_proc_entry("ap", ap->proc); | |
900 | remove_proc_entry("ap_control", ap->proc); | |
901 | } | |
902 | ap_control_flush_macs(&ap->mac_restrictions); | |
903 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
904 | ||
905 | ap->initialized = 0; | |
906 | } | |
907 | ||
908 | ||
909 | /* caller should have mutex for AP STA list handling */ | |
910 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta) | |
911 | { | |
912 | struct sta_info *s; | |
913 | ||
914 | s = ap->sta_hash[STA_HASH(sta)]; | |
d22fbd70 | 915 | while (s != NULL && !ether_addr_equal(s->addr, sta)) |
ff1d2767 JM |
916 | s = s->hnext; |
917 | return s; | |
918 | } | |
919 | ||
920 | ||
921 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
922 | ||
923 | /* Called from timer handler and from scheduled AP queue handlers */ | |
924 | static void prism2_send_mgmt(struct net_device *dev, | |
4339d328 | 925 | u16 type_subtype, char *body, |
ff1d2767 JM |
926 | int body_len, u8 *addr, u16 tx_cb_idx) |
927 | { | |
928 | struct hostap_interface *iface; | |
929 | local_info_t *local; | |
1ea893fd | 930 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
931 | u16 fc; |
932 | struct sk_buff *skb; | |
933 | struct hostap_skb_tx_data *meta; | |
934 | int hdrlen; | |
935 | ||
936 | iface = netdev_priv(dev); | |
937 | local = iface->local; | |
938 | dev = local->dev; /* always use master radio device */ | |
939 | iface = netdev_priv(dev); | |
940 | ||
941 | if (!(dev->flags & IFF_UP)) { | |
942 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - " | |
943 | "cannot send frame\n", dev->name); | |
944 | return; | |
945 | } | |
946 | ||
947 | skb = dev_alloc_skb(sizeof(*hdr) + body_len); | |
948 | if (skb == NULL) { | |
949 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate " | |
950 | "skb\n", dev->name); | |
951 | return; | |
952 | } | |
953 | ||
4339d328 | 954 | fc = type_subtype; |
1ea893fd | 955 | hdrlen = hostap_80211_get_hdrlen(cpu_to_le16(type_subtype)); |
b080db58 | 956 | hdr = skb_put_zero(skb, hdrlen); |
ff1d2767 | 957 | if (body) |
59ae1d12 | 958 | skb_put_data(skb, body, body_len); |
ff1d2767 | 959 | |
ff1d2767 JM |
960 | /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11 |
961 | * tx_control instead of using local->tx_control */ | |
962 | ||
963 | ||
964 | memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */ | |
1ea893fd | 965 | if (ieee80211_is_data(hdr->frame_control)) { |
b2f4a2e3 | 966 | fc |= IEEE80211_FCTL_FROMDS; |
ff1d2767 JM |
967 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */ |
968 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */ | |
1ea893fd | 969 | } else if (ieee80211_is_ctl(hdr->frame_control)) { |
ff1d2767 | 970 | /* control:ACK does not have addr2 or addr3 */ |
93803b33 JP |
971 | eth_zero_addr(hdr->addr2); |
972 | eth_zero_addr(hdr->addr3); | |
ff1d2767 JM |
973 | } else { |
974 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */ | |
975 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */ | |
976 | } | |
977 | ||
1ea893fd | 978 | hdr->frame_control = cpu_to_le16(fc); |
ff1d2767 JM |
979 | |
980 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
981 | memset(meta, 0, sizeof(*meta)); | |
982 | meta->magic = HOSTAP_SKB_TX_DATA_MAGIC; | |
983 | meta->iface = iface; | |
984 | meta->tx_cb_idx = tx_cb_idx; | |
985 | ||
986 | skb->dev = dev; | |
459a98ed | 987 | skb_reset_mac_header(skb); |
c1d2bbe1 | 988 | skb_reset_network_header(skb); |
ff1d2767 JM |
989 | dev_queue_xmit(skb); |
990 | } | |
991 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
992 | ||
993 | ||
6bbefe86 | 994 | static int prism2_sta_proc_show(struct seq_file *m, void *v) |
ff1d2767 | 995 | { |
6bbefe86 | 996 | struct sta_info *sta = m->private; |
ff1d2767 JM |
997 | int i; |
998 | ||
999 | /* FIX: possible race condition.. the STA data could have just expired, | |
1000 | * but proc entry was still here so that the read could have started; | |
1001 | * some locking should be done here.. */ | |
1002 | ||
6bbefe86 DH |
1003 | seq_printf(m, |
1004 | "%s=%pM\nusers=%d\naid=%d\n" | |
1005 | "flags=0x%04x%s%s%s%s%s%s%s\n" | |
1006 | "capability=0x%02x\nlisten_interval=%d\nsupported_rates=", | |
1007 | sta->ap ? "AP" : "STA", | |
1008 | sta->addr, atomic_read(&sta->users), sta->aid, | |
1009 | sta->flags, | |
1010 | sta->flags & WLAN_STA_AUTH ? " AUTH" : "", | |
1011 | sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "", | |
1012 | sta->flags & WLAN_STA_PS ? " PS" : "", | |
1013 | sta->flags & WLAN_STA_TIM ? " TIM" : "", | |
1014 | sta->flags & WLAN_STA_PERM ? " PERM" : "", | |
1015 | sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "", | |
1016 | sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "", | |
1017 | sta->capability, sta->listen_interval); | |
ff1d2767 JM |
1018 | /* supported_rates: 500 kbit/s units with msb ignored */ |
1019 | for (i = 0; i < sizeof(sta->supported_rates); i++) | |
1020 | if (sta->supported_rates[i] != 0) | |
6bbefe86 DH |
1021 | seq_printf(m, "%d%sMbps ", |
1022 | (sta->supported_rates[i] & 0x7f) / 2, | |
1023 | sta->supported_rates[i] & 1 ? ".5" : ""); | |
1024 | seq_printf(m, | |
1025 | "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n" | |
1026 | "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n" | |
1027 | "tx_packets=%lu\n" | |
1028 | "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n" | |
1029 | "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n" | |
1030 | "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n" | |
1031 | "tx[11M]=%d\n" | |
1032 | "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n", | |
1033 | jiffies, sta->last_auth, sta->last_assoc, sta->last_rx, | |
1034 | sta->last_tx, | |
1035 | sta->rx_packets, sta->tx_packets, sta->rx_bytes, | |
1036 | sta->tx_bytes, skb_queue_len(&sta->tx_buf), | |
1037 | sta->last_rx_silence, | |
1038 | sta->last_rx_signal, sta->last_rx_rate / 10, | |
1039 | sta->last_rx_rate % 10 ? ".5" : "", | |
1040 | sta->tx_rate, sta->tx_count[0], sta->tx_count[1], | |
1041 | sta->tx_count[2], sta->tx_count[3], sta->rx_count[0], | |
1042 | sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]); | |
ff1d2767 | 1043 | if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats) |
6bbefe86 | 1044 | sta->crypt->ops->print_stats(m, sta->crypt->priv); |
ff1d2767 JM |
1045 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
1046 | if (sta->ap) { | |
1047 | if (sta->u.ap.channel >= 0) | |
6bbefe86 DH |
1048 | seq_printf(m, "channel=%d\n", sta->u.ap.channel); |
1049 | seq_puts(m, "ssid="); | |
1050 | for (i = 0; i < sta->u.ap.ssid_len; i++) { | |
1051 | if (sta->u.ap.ssid[i] >= 32 && sta->u.ap.ssid[i] < 127) | |
1052 | seq_putc(m, sta->u.ap.ssid[i]); | |
1053 | else | |
1054 | seq_printf(m, "<%02x>", sta->u.ap.ssid[i]); | |
1055 | } | |
1056 | seq_putc(m, '\n'); | |
ff1d2767 JM |
1057 | } |
1058 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1059 | ||
6bbefe86 DH |
1060 | return 0; |
1061 | } | |
1062 | ||
c4028958 | 1063 | static void handle_add_proc_queue(struct work_struct *work) |
ff1d2767 | 1064 | { |
c4028958 DH |
1065 | struct ap_data *ap = container_of(work, struct ap_data, |
1066 | add_sta_proc_queue); | |
ff1d2767 JM |
1067 | struct sta_info *sta; |
1068 | char name[20]; | |
1069 | struct add_sta_proc_data *entry, *prev; | |
1070 | ||
1071 | entry = ap->add_sta_proc_entries; | |
1072 | ap->add_sta_proc_entries = NULL; | |
1073 | ||
1074 | while (entry) { | |
1075 | spin_lock_bh(&ap->sta_table_lock); | |
1076 | sta = ap_get_sta(ap, entry->addr); | |
1077 | if (sta) | |
1078 | atomic_inc(&sta->users); | |
1079 | spin_unlock_bh(&ap->sta_table_lock); | |
1080 | ||
1081 | if (sta) { | |
e174961c | 1082 | sprintf(name, "%pM", sta->addr); |
3f3942ac | 1083 | sta->proc = proc_create_single_data( |
ff1d2767 | 1084 | name, 0, ap->proc, |
3f3942ac | 1085 | prism2_sta_proc_show, sta); |
ff1d2767 JM |
1086 | |
1087 | atomic_dec(&sta->users); | |
1088 | } | |
1089 | ||
1090 | prev = entry; | |
1091 | entry = entry->next; | |
1092 | kfree(prev); | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | ||
1097 | static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr) | |
1098 | { | |
1099 | struct sta_info *sta; | |
1100 | ||
b0471bb7 | 1101 | sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC); |
ff1d2767 JM |
1102 | if (sta == NULL) { |
1103 | PDEBUG(DEBUG_AP, "AP: kmalloc failed\n"); | |
1104 | return NULL; | |
1105 | } | |
1106 | ||
1107 | /* initialize STA info data */ | |
ff1d2767 JM |
1108 | sta->local = ap->local; |
1109 | skb_queue_head_init(&sta->tx_buf); | |
1110 | memcpy(sta->addr, addr, ETH_ALEN); | |
1111 | ||
1112 | atomic_inc(&sta->users); | |
1113 | spin_lock_bh(&ap->sta_table_lock); | |
1114 | list_add(&sta->list, &ap->sta_list); | |
1115 | ap->num_sta++; | |
1116 | ap_sta_hash_add(ap, sta); | |
1117 | spin_unlock_bh(&ap->sta_table_lock); | |
1118 | ||
1119 | if (ap->proc) { | |
1120 | struct add_sta_proc_data *entry; | |
1121 | /* schedule a non-interrupt context process to add a procfs | |
1122 | * entry for the STA since procfs code use GFP_KERNEL */ | |
1123 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
1124 | if (entry) { | |
1125 | memcpy(entry->addr, sta->addr, ETH_ALEN); | |
1126 | entry->next = ap->add_sta_proc_entries; | |
1127 | ap->add_sta_proc_entries = entry; | |
1128 | schedule_work(&ap->add_sta_proc_queue); | |
1129 | } else | |
1130 | printk(KERN_DEBUG "Failed to add STA proc data\n"); | |
1131 | } | |
1132 | ||
1133 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
e99e88a9 | 1134 | timer_setup(&sta->timer, ap_handle_timer, 0); |
ff1d2767 | 1135 | sta->timer.expires = jiffies + ap->max_inactivity; |
ff1d2767 JM |
1136 | if (!ap->local->hostapd) |
1137 | add_timer(&sta->timer); | |
1138 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1139 | ||
1140 | return sta; | |
1141 | } | |
1142 | ||
1143 | ||
1144 | static int ap_tx_rate_ok(int rateidx, struct sta_info *sta, | |
1145 | local_info_t *local) | |
1146 | { | |
1147 | if (rateidx > sta->tx_max_rate || | |
1148 | !(sta->tx_supp_rates & (1 << rateidx))) | |
1149 | return 0; | |
1150 | ||
1151 | if (local->tx_rate_control != 0 && | |
1152 | !(local->tx_rate_control & (1 << rateidx))) | |
1153 | return 0; | |
1154 | ||
1155 | return 1; | |
1156 | } | |
1157 | ||
1158 | ||
1159 | static void prism2_check_tx_rates(struct sta_info *sta) | |
1160 | { | |
1161 | int i; | |
1162 | ||
1163 | sta->tx_supp_rates = 0; | |
1164 | for (i = 0; i < sizeof(sta->supported_rates); i++) { | |
1165 | if ((sta->supported_rates[i] & 0x7f) == 2) | |
1166 | sta->tx_supp_rates |= WLAN_RATE_1M; | |
1167 | if ((sta->supported_rates[i] & 0x7f) == 4) | |
1168 | sta->tx_supp_rates |= WLAN_RATE_2M; | |
1169 | if ((sta->supported_rates[i] & 0x7f) == 11) | |
1170 | sta->tx_supp_rates |= WLAN_RATE_5M5; | |
1171 | if ((sta->supported_rates[i] & 0x7f) == 22) | |
1172 | sta->tx_supp_rates |= WLAN_RATE_11M; | |
1173 | } | |
1174 | sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0; | |
1175 | if (sta->tx_supp_rates & WLAN_RATE_1M) { | |
1176 | sta->tx_max_rate = 0; | |
1177 | if (ap_tx_rate_ok(0, sta, sta->local)) { | |
1178 | sta->tx_rate = 10; | |
1179 | sta->tx_rate_idx = 0; | |
1180 | } | |
1181 | } | |
1182 | if (sta->tx_supp_rates & WLAN_RATE_2M) { | |
1183 | sta->tx_max_rate = 1; | |
1184 | if (ap_tx_rate_ok(1, sta, sta->local)) { | |
1185 | sta->tx_rate = 20; | |
1186 | sta->tx_rate_idx = 1; | |
1187 | } | |
1188 | } | |
1189 | if (sta->tx_supp_rates & WLAN_RATE_5M5) { | |
1190 | sta->tx_max_rate = 2; | |
1191 | if (ap_tx_rate_ok(2, sta, sta->local)) { | |
1192 | sta->tx_rate = 55; | |
1193 | sta->tx_rate_idx = 2; | |
1194 | } | |
1195 | } | |
1196 | if (sta->tx_supp_rates & WLAN_RATE_11M) { | |
1197 | sta->tx_max_rate = 3; | |
1198 | if (ap_tx_rate_ok(3, sta, sta->local)) { | |
1199 | sta->tx_rate = 110; | |
1200 | sta->tx_rate_idx = 3; | |
1201 | } | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | ||
1206 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1207 | ||
1208 | static void ap_crypt_init(struct ap_data *ap) | |
1209 | { | |
274bfb8d | 1210 | ap->crypt = lib80211_get_crypto_ops("WEP"); |
ff1d2767 JM |
1211 | |
1212 | if (ap->crypt) { | |
1213 | if (ap->crypt->init) { | |
1214 | ap->crypt_priv = ap->crypt->init(0); | |
1215 | if (ap->crypt_priv == NULL) | |
1216 | ap->crypt = NULL; | |
1217 | else { | |
1218 | u8 key[WEP_KEY_LEN]; | |
1219 | get_random_bytes(key, WEP_KEY_LEN); | |
1220 | ap->crypt->set_key(key, WEP_KEY_LEN, NULL, | |
1221 | ap->crypt_priv); | |
1222 | } | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | if (ap->crypt == NULL) { | |
1227 | printk(KERN_WARNING "AP could not initialize WEP: load module " | |
274bfb8d | 1228 | "lib80211_crypt_wep.ko\n"); |
ff1d2767 JM |
1229 | } |
1230 | } | |
1231 | ||
1232 | ||
1233 | /* Generate challenge data for shared key authentication. IEEE 802.11 specifies | |
25d1fbfd | 1234 | * that WEP algorithm is used for generating challenge. This should be unique, |
ff1d2767 JM |
1235 | * but otherwise there is not really need for randomness etc. Initialize WEP |
1236 | * with pseudo random key and then use increasing IV to get unique challenge | |
1237 | * streams. | |
1238 | * | |
1239 | * Called only as a scheduled task for pending AP frames. | |
1240 | */ | |
1241 | static char * ap_auth_make_challenge(struct ap_data *ap) | |
1242 | { | |
1243 | char *tmpbuf; | |
1244 | struct sk_buff *skb; | |
1245 | ||
1246 | if (ap->crypt == NULL) { | |
1247 | ap_crypt_init(ap); | |
1248 | if (ap->crypt == NULL) | |
1249 | return NULL; | |
1250 | } | |
1251 | ||
5cbded58 | 1252 | tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC); |
ff1d2767 JM |
1253 | if (tmpbuf == NULL) { |
1254 | PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n"); | |
1255 | return NULL; | |
1256 | } | |
1257 | ||
1258 | skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN + | |
5bfc819b JK |
1259 | ap->crypt->extra_mpdu_prefix_len + |
1260 | ap->crypt->extra_mpdu_postfix_len); | |
ff1d2767 JM |
1261 | if (skb == NULL) { |
1262 | kfree(tmpbuf); | |
1263 | return NULL; | |
1264 | } | |
1265 | ||
5bfc819b | 1266 | skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len); |
b080db58 | 1267 | skb_put_zero(skb, WLAN_AUTH_CHALLENGE_LEN); |
ff1d2767 JM |
1268 | if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) { |
1269 | dev_kfree_skb(skb); | |
1270 | kfree(tmpbuf); | |
1271 | return NULL; | |
1272 | } | |
1273 | ||
d626f62b ACM |
1274 | skb_copy_from_linear_data_offset(skb, ap->crypt->extra_mpdu_prefix_len, |
1275 | tmpbuf, WLAN_AUTH_CHALLENGE_LEN); | |
ff1d2767 JM |
1276 | dev_kfree_skb(skb); |
1277 | ||
1278 | return tmpbuf; | |
1279 | } | |
1280 | ||
1281 | ||
1282 | /* Called only as a scheduled task for pending AP frames. */ | |
1283 | static void handle_authen(local_info_t *local, struct sk_buff *skb, | |
1284 | struct hostap_80211_rx_status *rx_stats) | |
1285 | { | |
1286 | struct net_device *dev = local->dev; | |
1ea893fd | 1287 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1288 | size_t hdrlen; |
1289 | struct ap_data *ap = local->ap; | |
1290 | char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL; | |
1291 | int len, olen; | |
8a9faf3c AV |
1292 | u16 auth_alg, auth_transaction, status_code; |
1293 | __le16 *pos; | |
1ea893fd | 1294 | u16 resp = WLAN_STATUS_SUCCESS; |
ff1d2767 | 1295 | struct sta_info *sta = NULL; |
274bfb8d | 1296 | struct lib80211_crypt_data *crypt; |
ff1d2767 JM |
1297 | char *txt = ""; |
1298 | ||
1299 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1300 | ||
1ea893fd | 1301 | hdrlen = hostap_80211_get_hdrlen(hdr->frame_control); |
ff1d2767 JM |
1302 | |
1303 | if (len < 6) { | |
1304 | PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload " | |
e174961c | 1305 | "(len=%d) from %pM\n", dev->name, len, hdr->addr2); |
ff1d2767 JM |
1306 | return; |
1307 | } | |
1308 | ||
1309 | spin_lock_bh(&local->ap->sta_table_lock); | |
1310 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1311 | if (sta) | |
1312 | atomic_inc(&sta->users); | |
1313 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1314 | ||
1315 | if (sta && sta->crypt) | |
1316 | crypt = sta->crypt; | |
1317 | else { | |
1318 | int idx = 0; | |
1319 | if (skb->len >= hdrlen + 3) | |
1320 | idx = skb->data[hdrlen + 3] >> 6; | |
274bfb8d | 1321 | crypt = local->crypt_info.crypt[idx]; |
ff1d2767 JM |
1322 | } |
1323 | ||
8a9faf3c | 1324 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
1325 | auth_alg = __le16_to_cpu(*pos); |
1326 | pos++; | |
1327 | auth_transaction = __le16_to_cpu(*pos); | |
1328 | pos++; | |
1329 | status_code = __le16_to_cpu(*pos); | |
1330 | pos++; | |
1331 | ||
d22fbd70 | 1332 | if (ether_addr_equal(dev->dev_addr, hdr->addr2) || |
ff1d2767 JM |
1333 | ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) { |
1334 | txt = "authentication denied"; | |
1335 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1336 | goto fail; | |
1337 | } | |
1338 | ||
1339 | if (((local->auth_algs & PRISM2_AUTH_OPEN) && | |
1340 | auth_alg == WLAN_AUTH_OPEN) || | |
1341 | ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) && | |
1342 | crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) { | |
1343 | } else { | |
1344 | txt = "unsupported algorithm"; | |
1345 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
1346 | goto fail; | |
1347 | } | |
1348 | ||
1349 | if (len >= 8) { | |
1350 | u8 *u = (u8 *) pos; | |
1351 | if (*u == WLAN_EID_CHALLENGE) { | |
1352 | if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) { | |
1353 | txt = "invalid challenge len"; | |
1354 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1355 | goto fail; | |
1356 | } | |
1357 | if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) { | |
1358 | txt = "challenge underflow"; | |
1359 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1360 | goto fail; | |
1361 | } | |
1362 | challenge = (char *) (u + 2); | |
1363 | } | |
1364 | } | |
1365 | ||
1366 | if (sta && sta->ap) { | |
1367 | if (time_after(jiffies, sta->u.ap.last_beacon + | |
1368 | (10 * sta->listen_interval * HZ) / 1024)) { | |
1369 | PDEBUG(DEBUG_AP, "%s: no beacons received for a while," | |
e174961c JB |
1370 | " assuming AP %pM is now STA\n", |
1371 | dev->name, sta->addr); | |
ff1d2767 JM |
1372 | sta->ap = 0; |
1373 | sta->flags = 0; | |
1374 | sta->u.sta.challenge = NULL; | |
1375 | } else { | |
1376 | txt = "AP trying to authenticate?"; | |
1377 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1378 | goto fail; | |
1379 | } | |
1380 | } | |
1381 | ||
1382 | if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) || | |
1383 | (auth_alg == WLAN_AUTH_SHARED_KEY && | |
1384 | (auth_transaction == 1 || | |
1385 | (auth_transaction == 3 && sta != NULL && | |
1386 | sta->u.sta.challenge != NULL)))) { | |
1387 | } else { | |
1388 | txt = "unknown authentication transaction number"; | |
1389 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; | |
1390 | goto fail; | |
1391 | } | |
1392 | ||
1393 | if (sta == NULL) { | |
1394 | txt = "new STA"; | |
1395 | ||
1396 | if (local->ap->num_sta >= MAX_STA_COUNT) { | |
1397 | /* FIX: might try to remove some old STAs first? */ | |
1398 | txt = "no more room for new STAs"; | |
1399 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1400 | goto fail; | |
1401 | } | |
1402 | ||
1403 | sta = ap_add_sta(local->ap, hdr->addr2); | |
1404 | if (sta == NULL) { | |
1405 | txt = "ap_add_sta failed"; | |
1406 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1407 | goto fail; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | switch (auth_alg) { | |
1412 | case WLAN_AUTH_OPEN: | |
1413 | txt = "authOK"; | |
1414 | /* IEEE 802.11 standard is not completely clear about | |
1415 | * whether STA is considered authenticated after | |
1416 | * authentication OK frame has been send or after it | |
1417 | * has been ACKed. In order to reduce interoperability | |
1418 | * issues, mark the STA authenticated before ACK. */ | |
1419 | sta->flags |= WLAN_STA_AUTH; | |
1420 | break; | |
1421 | ||
1422 | case WLAN_AUTH_SHARED_KEY: | |
1423 | if (auth_transaction == 1) { | |
1424 | if (sta->u.sta.challenge == NULL) { | |
1425 | sta->u.sta.challenge = | |
1426 | ap_auth_make_challenge(local->ap); | |
1427 | if (sta->u.sta.challenge == NULL) { | |
1428 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1429 | goto fail; | |
1430 | } | |
1431 | } | |
1432 | } else { | |
1433 | if (sta->u.sta.challenge == NULL || | |
1434 | challenge == NULL || | |
1435 | memcmp(sta->u.sta.challenge, challenge, | |
1436 | WLAN_AUTH_CHALLENGE_LEN) != 0 || | |
1ea893fd | 1437 | !ieee80211_has_protected(hdr->frame_control)) { |
ff1d2767 JM |
1438 | txt = "challenge response incorrect"; |
1439 | resp = WLAN_STATUS_CHALLENGE_FAIL; | |
1440 | goto fail; | |
1441 | } | |
1442 | ||
1443 | txt = "challenge OK - authOK"; | |
1444 | /* IEEE 802.11 standard is not completely clear about | |
1445 | * whether STA is considered authenticated after | |
1446 | * authentication OK frame has been send or after it | |
1447 | * has been ACKed. In order to reduce interoperability | |
1448 | * issues, mark the STA authenticated before ACK. */ | |
1449 | sta->flags |= WLAN_STA_AUTH; | |
1450 | kfree(sta->u.sta.challenge); | |
1451 | sta->u.sta.challenge = NULL; | |
1452 | } | |
1453 | break; | |
1454 | } | |
1455 | ||
1456 | fail: | |
8a9faf3c | 1457 | pos = (__le16 *) body; |
ff1d2767 JM |
1458 | *pos = cpu_to_le16(auth_alg); |
1459 | pos++; | |
1460 | *pos = cpu_to_le16(auth_transaction + 1); | |
1461 | pos++; | |
1462 | *pos = cpu_to_le16(resp); /* status_code */ | |
1463 | pos++; | |
1464 | olen = 6; | |
1465 | ||
1466 | if (resp == WLAN_STATUS_SUCCESS && sta != NULL && | |
1467 | sta->u.sta.challenge != NULL && | |
1468 | auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) { | |
1469 | u8 *tmp = (u8 *) pos; | |
1470 | *tmp++ = WLAN_EID_CHALLENGE; | |
1471 | *tmp++ = WLAN_AUTH_CHALLENGE_LEN; | |
1472 | pos++; | |
1473 | memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN); | |
1474 | olen += 2 + WLAN_AUTH_CHALLENGE_LEN; | |
1475 | } | |
1476 | ||
4339d328 | 1477 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH, |
ff1d2767 JM |
1478 | body, olen, hdr->addr2, ap->tx_callback_auth); |
1479 | ||
1480 | if (sta) { | |
1481 | sta->last_rx = jiffies; | |
1482 | atomic_dec(&sta->users); | |
1483 | } | |
1484 | ||
1485 | if (resp) { | |
e174961c | 1486 | PDEBUG(DEBUG_AP, "%s: %pM auth (alg=%d " |
0795af57 | 1487 | "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n", |
e174961c | 1488 | dev->name, hdr->addr2, |
21f644f3 | 1489 | auth_alg, auth_transaction, status_code, len, |
1ea893fd | 1490 | le16_to_cpu(hdr->frame_control), resp, txt); |
ff1d2767 JM |
1491 | } |
1492 | } | |
1493 | ||
1494 | ||
1495 | /* Called only as a scheduled task for pending AP frames. */ | |
1496 | static void handle_assoc(local_info_t *local, struct sk_buff *skb, | |
1497 | struct hostap_80211_rx_status *rx_stats, int reassoc) | |
1498 | { | |
1499 | struct net_device *dev = local->dev; | |
1ea893fd | 1500 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1501 | char body[12], *p, *lpos; |
1502 | int len, left; | |
8a9faf3c | 1503 | __le16 *pos; |
ff1d2767 JM |
1504 | u16 resp = WLAN_STATUS_SUCCESS; |
1505 | struct sta_info *sta = NULL; | |
1506 | int send_deauth = 0; | |
1507 | char *txt = ""; | |
1508 | u8 prev_ap[ETH_ALEN]; | |
1509 | ||
1510 | left = len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1511 | ||
1512 | if (len < (reassoc ? 10 : 4)) { | |
1513 | PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload " | |
e174961c JB |
1514 | "(len=%d, reassoc=%d) from %pM\n", |
1515 | dev->name, len, reassoc, hdr->addr2); | |
ff1d2767 JM |
1516 | return; |
1517 | } | |
1518 | ||
1519 | spin_lock_bh(&local->ap->sta_table_lock); | |
1520 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1521 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
1522 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1523 | txt = "trying to associate before authentication"; | |
1524 | send_deauth = 1; | |
1525 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1526 | sta = NULL; /* do not decrement sta->users */ | |
1527 | goto fail; | |
1528 | } | |
1529 | atomic_inc(&sta->users); | |
1530 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1531 | ||
8a9faf3c | 1532 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
ff1d2767 JM |
1533 | sta->capability = __le16_to_cpu(*pos); |
1534 | pos++; left -= 2; | |
1535 | sta->listen_interval = __le16_to_cpu(*pos); | |
1536 | pos++; left -= 2; | |
1537 | ||
1538 | if (reassoc) { | |
1539 | memcpy(prev_ap, pos, ETH_ALEN); | |
1540 | pos++; pos++; pos++; left -= 6; | |
1541 | } else | |
93803b33 | 1542 | eth_zero_addr(prev_ap); |
ff1d2767 JM |
1543 | |
1544 | if (left >= 2) { | |
1545 | unsigned int ileft; | |
1546 | unsigned char *u = (unsigned char *) pos; | |
1547 | ||
1548 | if (*u == WLAN_EID_SSID) { | |
1549 | u++; left--; | |
1550 | ileft = *u; | |
1551 | u++; left--; | |
1552 | ||
1553 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
1554 | txt = "SSID overflow"; | |
1555 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1556 | goto fail; | |
1557 | } | |
1558 | ||
1559 | if (ileft != strlen(local->essid) || | |
1560 | memcmp(local->essid, u, ileft) != 0) { | |
1561 | txt = "not our SSID"; | |
1562 | resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC; | |
1563 | goto fail; | |
1564 | } | |
1565 | ||
1566 | u += ileft; | |
1567 | left -= ileft; | |
1568 | } | |
1569 | ||
1570 | if (left >= 2 && *u == WLAN_EID_SUPP_RATES) { | |
1571 | u++; left--; | |
1572 | ileft = *u; | |
1573 | u++; left--; | |
74fae82c | 1574 | |
ff1d2767 JM |
1575 | if (ileft > left || ileft == 0 || |
1576 | ileft > WLAN_SUPP_RATES_MAX) { | |
1577 | txt = "SUPP_RATES len error"; | |
1578 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1579 | goto fail; | |
1580 | } | |
1581 | ||
1582 | memset(sta->supported_rates, 0, | |
1583 | sizeof(sta->supported_rates)); | |
1584 | memcpy(sta->supported_rates, u, ileft); | |
1585 | prism2_check_tx_rates(sta); | |
1586 | ||
1587 | u += ileft; | |
1588 | left -= ileft; | |
1589 | } | |
1590 | ||
1591 | if (left > 0) { | |
e174961c | 1592 | PDEBUG(DEBUG_AP, "%s: assoc from %pM" |
0795af57 | 1593 | " with extra data (%d bytes) [", |
e174961c | 1594 | dev->name, hdr->addr2, left); |
ff1d2767 JM |
1595 | while (left > 0) { |
1596 | PDEBUG2(DEBUG_AP, "<%02x>", *u); | |
1597 | u++; left--; | |
1598 | } | |
1599 | PDEBUG2(DEBUG_AP, "]\n"); | |
1600 | } | |
1601 | } else { | |
1602 | txt = "frame underflow"; | |
1603 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1604 | goto fail; | |
1605 | } | |
1606 | ||
1607 | /* get a unique AID */ | |
1608 | if (sta->aid > 0) | |
1609 | txt = "OK, old AID"; | |
1610 | else { | |
1611 | spin_lock_bh(&local->ap->sta_table_lock); | |
1612 | for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++) | |
1613 | if (local->ap->sta_aid[sta->aid - 1] == NULL) | |
1614 | break; | |
1615 | if (sta->aid > MAX_AID_TABLE_SIZE) { | |
1616 | sta->aid = 0; | |
1617 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1618 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1619 | txt = "no room for more AIDs"; | |
1620 | } else { | |
1621 | local->ap->sta_aid[sta->aid - 1] = sta; | |
1622 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1623 | txt = "OK, new AID"; | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | fail: | |
8a9faf3c | 1628 | pos = (__le16 *) body; |
ff1d2767 JM |
1629 | |
1630 | if (send_deauth) { | |
8a9faf3c | 1631 | *pos = cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH); |
ff1d2767 JM |
1632 | pos++; |
1633 | } else { | |
1634 | /* FIX: CF-Pollable and CF-PollReq should be set to match the | |
1635 | * values in beacons/probe responses */ | |
1636 | /* FIX: how about privacy and WEP? */ | |
1637 | /* capability */ | |
8a9faf3c | 1638 | *pos = cpu_to_le16(WLAN_CAPABILITY_ESS); |
ff1d2767 JM |
1639 | pos++; |
1640 | ||
1641 | /* status_code */ | |
8a9faf3c | 1642 | *pos = cpu_to_le16(resp); |
ff1d2767 JM |
1643 | pos++; |
1644 | ||
8a9faf3c | 1645 | *pos = cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) | |
ff1d2767 JM |
1646 | BIT(14) | BIT(15)); /* AID */ |
1647 | pos++; | |
1648 | ||
1649 | /* Supported rates (Information element) */ | |
1650 | p = (char *) pos; | |
1651 | *p++ = WLAN_EID_SUPP_RATES; | |
1652 | lpos = p; | |
1653 | *p++ = 0; /* len */ | |
1654 | if (local->tx_rate_control & WLAN_RATE_1M) { | |
1655 | *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02; | |
1656 | (*lpos)++; | |
1657 | } | |
1658 | if (local->tx_rate_control & WLAN_RATE_2M) { | |
1659 | *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04; | |
1660 | (*lpos)++; | |
1661 | } | |
1662 | if (local->tx_rate_control & WLAN_RATE_5M5) { | |
1663 | *p++ = local->basic_rates & WLAN_RATE_5M5 ? | |
1664 | 0x8b : 0x0b; | |
1665 | (*lpos)++; | |
1666 | } | |
1667 | if (local->tx_rate_control & WLAN_RATE_11M) { | |
1668 | *p++ = local->basic_rates & WLAN_RATE_11M ? | |
1669 | 0x96 : 0x16; | |
1670 | (*lpos)++; | |
1671 | } | |
8a9faf3c | 1672 | pos = (__le16 *) p; |
ff1d2767 JM |
1673 | } |
1674 | ||
4339d328 JM |
1675 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
1676 | (send_deauth ? IEEE80211_STYPE_DEAUTH : | |
1677 | (reassoc ? IEEE80211_STYPE_REASSOC_RESP : | |
1678 | IEEE80211_STYPE_ASSOC_RESP)), | |
ff1d2767 JM |
1679 | body, (u8 *) pos - (u8 *) body, |
1680 | hdr->addr2, | |
1681 | send_deauth ? 0 : local->ap->tx_callback_assoc); | |
1682 | ||
1683 | if (sta) { | |
1684 | if (resp == WLAN_STATUS_SUCCESS) { | |
1685 | sta->last_rx = jiffies; | |
1686 | /* STA will be marked associated from TX callback, if | |
1687 | * AssocResp is ACKed */ | |
1688 | } | |
1689 | atomic_dec(&sta->users); | |
1690 | } | |
1691 | ||
1692 | #if 0 | |
e174961c JB |
1693 | PDEBUG(DEBUG_AP, "%s: %pM %sassoc (len=%d " |
1694 | "prev_ap=%pM) => %d(%d) (%s)\n", | |
21f644f3 | 1695 | dev->name, |
e174961c | 1696 | hdr->addr2, |
21f644f3 | 1697 | reassoc ? "re" : "", len, |
e174961c | 1698 | prev_ap, |
21f644f3 | 1699 | resp, send_deauth, txt); |
ff1d2767 JM |
1700 | #endif |
1701 | } | |
1702 | ||
1703 | ||
1704 | /* Called only as a scheduled task for pending AP frames. */ | |
1705 | static void handle_deauth(local_info_t *local, struct sk_buff *skb, | |
1706 | struct hostap_80211_rx_status *rx_stats) | |
1707 | { | |
1708 | struct net_device *dev = local->dev; | |
1ea893fd | 1709 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1710 | char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
1711 | int len; | |
8a9faf3c AV |
1712 | u16 reason_code; |
1713 | __le16 *pos; | |
ff1d2767 JM |
1714 | struct sta_info *sta = NULL; |
1715 | ||
1716 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1717 | ||
1718 | if (len < 2) { | |
1719 | printk("handle_deauth - too short payload (len=%d)\n", len); | |
1720 | return; | |
1721 | } | |
1722 | ||
8a9faf3c AV |
1723 | pos = (__le16 *) body; |
1724 | reason_code = le16_to_cpu(*pos); | |
ff1d2767 | 1725 | |
e174961c JB |
1726 | PDEBUG(DEBUG_AP, "%s: deauthentication: %pM len=%d, " |
1727 | "reason_code=%d\n", dev->name, hdr->addr2, | |
21f644f3 | 1728 | len, reason_code); |
ff1d2767 JM |
1729 | |
1730 | spin_lock_bh(&local->ap->sta_table_lock); | |
1731 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1732 | if (sta != NULL) { | |
1733 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1734 | hostap_event_expired_sta(local->dev, sta); | |
1735 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
1736 | } | |
1737 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1738 | if (sta == NULL) { | |
e174961c | 1739 | printk("%s: deauthentication from %pM, " |
ff1d2767 | 1740 | "reason_code=%d, but STA not authenticated\n", dev->name, |
e174961c | 1741 | hdr->addr2, reason_code); |
ff1d2767 JM |
1742 | } |
1743 | } | |
1744 | ||
1745 | ||
1746 | /* Called only as a scheduled task for pending AP frames. */ | |
1747 | static void handle_disassoc(local_info_t *local, struct sk_buff *skb, | |
1748 | struct hostap_80211_rx_status *rx_stats) | |
1749 | { | |
1750 | struct net_device *dev = local->dev; | |
1ea893fd | 1751 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1752 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1753 | int len; | |
8a9faf3c AV |
1754 | u16 reason_code; |
1755 | __le16 *pos; | |
ff1d2767 JM |
1756 | struct sta_info *sta = NULL; |
1757 | ||
1758 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1759 | ||
1760 | if (len < 2) { | |
1761 | printk("handle_disassoc - too short payload (len=%d)\n", len); | |
1762 | return; | |
1763 | } | |
1764 | ||
8a9faf3c AV |
1765 | pos = (__le16 *) body; |
1766 | reason_code = le16_to_cpu(*pos); | |
ff1d2767 | 1767 | |
e174961c JB |
1768 | PDEBUG(DEBUG_AP, "%s: disassociation: %pM len=%d, " |
1769 | "reason_code=%d\n", dev->name, hdr->addr2, | |
21f644f3 | 1770 | len, reason_code); |
ff1d2767 JM |
1771 | |
1772 | spin_lock_bh(&local->ap->sta_table_lock); | |
1773 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1774 | if (sta != NULL) { | |
1775 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
1776 | hostap_event_expired_sta(local->dev, sta); | |
1777 | sta->flags &= ~WLAN_STA_ASSOC; | |
1778 | } | |
1779 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1780 | if (sta == NULL) { | |
e174961c | 1781 | printk("%s: disassociation from %pM, " |
ff1d2767 | 1782 | "reason_code=%d, but STA not authenticated\n", |
e174961c | 1783 | dev->name, hdr->addr2, reason_code); |
ff1d2767 JM |
1784 | } |
1785 | } | |
1786 | ||
1787 | ||
1788 | /* Called only as a scheduled task for pending AP frames. */ | |
1789 | static void ap_handle_data_nullfunc(local_info_t *local, | |
1ea893fd | 1790 | struct ieee80211_hdr *hdr) |
ff1d2767 JM |
1791 | { |
1792 | struct net_device *dev = local->dev; | |
1793 | ||
1794 | /* some STA f/w's seem to require control::ACK frame for | |
1795 | * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does | |
1796 | * not send this.. | |
1797 | * send control::ACK for the data::nullfunc */ | |
1798 | ||
1799 | printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n"); | |
4339d328 | 1800 | prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK, |
ff1d2767 JM |
1801 | NULL, 0, hdr->addr2, 0); |
1802 | } | |
1803 | ||
1804 | ||
1805 | /* Called only as a scheduled task for pending AP frames. */ | |
1806 | static void ap_handle_dropped_data(local_info_t *local, | |
1ea893fd | 1807 | struct ieee80211_hdr *hdr) |
ff1d2767 JM |
1808 | { |
1809 | struct net_device *dev = local->dev; | |
1810 | struct sta_info *sta; | |
8a9faf3c | 1811 | __le16 reason; |
ff1d2767 JM |
1812 | |
1813 | spin_lock_bh(&local->ap->sta_table_lock); | |
1814 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1815 | if (sta) | |
1816 | atomic_inc(&sta->users); | |
1817 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1818 | ||
1819 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) { | |
1820 | PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n"); | |
1821 | atomic_dec(&sta->users); | |
1822 | return; | |
1823 | } | |
1824 | ||
8a9faf3c | 1825 | reason = cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); |
4339d328 | 1826 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
ff1d2767 | 1827 | ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ? |
4339d328 | 1828 | IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC), |
ff1d2767 JM |
1829 | (char *) &reason, sizeof(reason), hdr->addr2, 0); |
1830 | ||
1831 | if (sta) | |
1832 | atomic_dec(&sta->users); | |
1833 | } | |
1834 | ||
1835 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
1836 | ||
1837 | ||
1838 | /* Called only as a scheduled task for pending AP frames. */ | |
1839 | static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta, | |
1840 | struct sk_buff *skb) | |
1841 | { | |
5bee720f JM |
1842 | struct hostap_skb_tx_data *meta; |
1843 | ||
ff1d2767 JM |
1844 | if (!(sta->flags & WLAN_STA_PS)) { |
1845 | /* Station has moved to non-PS mode, so send all buffered | |
1846 | * frames using normal device queue. */ | |
1847 | dev_queue_xmit(skb); | |
1848 | return; | |
1849 | } | |
1850 | ||
1851 | /* add a flag for hostap_handle_sta_tx() to know that this skb should | |
1852 | * be passed through even though STA is using PS */ | |
5bee720f JM |
1853 | meta = (struct hostap_skb_tx_data *) skb->cb; |
1854 | meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME; | |
ff1d2767 JM |
1855 | if (!skb_queue_empty(&sta->tx_buf)) { |
1856 | /* indicate to STA that more frames follow */ | |
5bee720f | 1857 | meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA; |
ff1d2767 JM |
1858 | } |
1859 | dev_queue_xmit(skb); | |
1860 | } | |
1861 | ||
1862 | ||
1863 | /* Called only as a scheduled task for pending AP frames. */ | |
1864 | static void handle_pspoll(local_info_t *local, | |
1ea893fd | 1865 | struct ieee80211_hdr *hdr, |
ff1d2767 JM |
1866 | struct hostap_80211_rx_status *rx_stats) |
1867 | { | |
1868 | struct net_device *dev = local->dev; | |
1869 | struct sta_info *sta; | |
1870 | u16 aid; | |
1871 | struct sk_buff *skb; | |
1872 | ||
e174961c | 1873 | PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n", |
1ea893fd | 1874 | hdr->addr1, hdr->addr2, !!ieee80211_has_pm(hdr->frame_control)); |
ff1d2767 | 1875 | |
d22fbd70 | 1876 | if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
e174961c JB |
1877 | PDEBUG(DEBUG_AP, |
1878 | "handle_pspoll - addr1(BSSID)=%pM not own MAC\n", | |
1879 | hdr->addr1); | |
ff1d2767 JM |
1880 | return; |
1881 | } | |
1882 | ||
8a9faf3c | 1883 | aid = le16_to_cpu(hdr->duration_id); |
ff1d2767 JM |
1884 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) { |
1885 | PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n"); | |
1886 | return; | |
1887 | } | |
1bcca3c4 | 1888 | aid &= ~(BIT(15) | BIT(14)); |
ff1d2767 JM |
1889 | if (aid == 0 || aid > MAX_AID_TABLE_SIZE) { |
1890 | PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid); | |
1891 | return; | |
1892 | } | |
1893 | PDEBUG(DEBUG_PS2, " aid=%d\n", aid); | |
1894 | ||
1895 | spin_lock_bh(&local->ap->sta_table_lock); | |
1896 | sta = ap_get_sta(local->ap, hdr->addr2); | |
1897 | if (sta) | |
1898 | atomic_inc(&sta->users); | |
1899 | spin_unlock_bh(&local->ap->sta_table_lock); | |
1900 | ||
1901 | if (sta == NULL) { | |
1902 | PDEBUG(DEBUG_PS, " STA not found\n"); | |
1903 | return; | |
1904 | } | |
1905 | if (sta->aid != aid) { | |
1906 | PDEBUG(DEBUG_PS, " received aid=%i does not match with " | |
1907 | "assoc.aid=%d\n", aid, sta->aid); | |
1908 | return; | |
1909 | } | |
1910 | ||
1911 | /* FIX: todo: | |
1912 | * - add timeout for buffering (clear aid in TIM vector if buffer timed | |
1913 | * out (expiry time must be longer than ListenInterval for | |
1914 | * the corresponding STA; "8802-11: 11.2.1.9 AP aging function" | |
1915 | * - what to do, if buffered, pspolled, and sent frame is not ACKed by | |
1916 | * sta; store buffer for later use and leave TIM aid bit set? use | |
1917 | * TX event to check whether frame was ACKed? | |
1918 | */ | |
1919 | ||
1920 | while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) { | |
1921 | /* send buffered frame .. */ | |
1922 | PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL" | |
1923 | " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf)); | |
1924 | ||
1925 | pspoll_send_buffered(local, sta, skb); | |
1926 | ||
1927 | if (sta->flags & WLAN_STA_PS) { | |
1928 | /* send only one buffered packet per PS Poll */ | |
1929 | /* FIX: should ignore further PS Polls until the | |
1930 | * buffered packet that was just sent is acknowledged | |
1931 | * (Tx or TxExc event) */ | |
1932 | break; | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | if (skb_queue_empty(&sta->tx_buf)) { | |
1937 | /* try to clear aid from TIM */ | |
1938 | if (!(sta->flags & WLAN_STA_TIM)) | |
1939 | PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n", | |
1940 | aid); | |
1941 | hostap_set_tim(local, aid, 0); | |
1942 | sta->flags &= ~WLAN_STA_TIM; | |
1943 | } | |
1944 | ||
1945 | atomic_dec(&sta->users); | |
1946 | } | |
1947 | ||
1948 | ||
1949 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
1950 | ||
c4028958 | 1951 | static void handle_wds_oper_queue(struct work_struct *work) |
ff1d2767 | 1952 | { |
c4028958 DH |
1953 | struct ap_data *ap = container_of(work, struct ap_data, |
1954 | wds_oper_queue); | |
1955 | local_info_t *local = ap->local; | |
ff1d2767 JM |
1956 | struct wds_oper_data *entry, *prev; |
1957 | ||
1958 | spin_lock_bh(&local->lock); | |
1959 | entry = local->ap->wds_oper_entries; | |
1960 | local->ap->wds_oper_entries = NULL; | |
1961 | spin_unlock_bh(&local->lock); | |
1962 | ||
1963 | while (entry) { | |
1964 | PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection " | |
e174961c | 1965 | "to AP %pM\n", |
ff1d2767 JM |
1966 | local->dev->name, |
1967 | entry->type == WDS_ADD ? "adding" : "removing", | |
e174961c | 1968 | entry->addr); |
ff1d2767 JM |
1969 | if (entry->type == WDS_ADD) |
1970 | prism2_wds_add(local, entry->addr, 0); | |
1971 | else if (entry->type == WDS_DEL) | |
1972 | prism2_wds_del(local, entry->addr, 0, 1); | |
1973 | ||
1974 | prev = entry; | |
1975 | entry = entry->next; | |
1976 | kfree(prev); | |
1977 | } | |
1978 | } | |
1979 | ||
1980 | ||
1981 | /* Called only as a scheduled task for pending AP frames. */ | |
1982 | static void handle_beacon(local_info_t *local, struct sk_buff *skb, | |
1983 | struct hostap_80211_rx_status *rx_stats) | |
1984 | { | |
1ea893fd | 1985 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
1986 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
1987 | int len, left; | |
8a9faf3c AV |
1988 | u16 beacon_int, capability; |
1989 | __le16 *pos; | |
ff1d2767 JM |
1990 | char *ssid = NULL; |
1991 | unsigned char *supp_rates = NULL; | |
1992 | int ssid_len = 0, supp_rates_len = 0; | |
1993 | struct sta_info *sta = NULL; | |
1994 | int new_sta = 0, channel = -1; | |
1995 | ||
1996 | len = skb->len - IEEE80211_MGMT_HDR_LEN; | |
1997 | ||
1998 | if (len < 8 + 2 + 2) { | |
1999 | printk(KERN_DEBUG "handle_beacon - too short payload " | |
2000 | "(len=%d)\n", len); | |
2001 | return; | |
2002 | } | |
2003 | ||
8a9faf3c | 2004 | pos = (__le16 *) body; |
ff1d2767 JM |
2005 | left = len; |
2006 | ||
2007 | /* Timestamp (8 octets) */ | |
2008 | pos += 4; left -= 8; | |
2009 | /* Beacon interval (2 octets) */ | |
8a9faf3c | 2010 | beacon_int = le16_to_cpu(*pos); |
ff1d2767 JM |
2011 | pos++; left -= 2; |
2012 | /* Capability information (2 octets) */ | |
8a9faf3c | 2013 | capability = le16_to_cpu(*pos); |
ff1d2767 JM |
2014 | pos++; left -= 2; |
2015 | ||
2016 | if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS && | |
2017 | capability & WLAN_CAPABILITY_IBSS) | |
2018 | return; | |
2019 | ||
2020 | if (left >= 2) { | |
2021 | unsigned int ileft; | |
2022 | unsigned char *u = (unsigned char *) pos; | |
2023 | ||
2024 | if (*u == WLAN_EID_SSID) { | |
2025 | u++; left--; | |
2026 | ileft = *u; | |
2027 | u++; left--; | |
2028 | ||
2029 | if (ileft > left || ileft > MAX_SSID_LEN) { | |
2030 | PDEBUG(DEBUG_AP, "SSID: overflow\n"); | |
2031 | return; | |
2032 | } | |
2033 | ||
2034 | if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID && | |
2035 | (ileft != strlen(local->essid) || | |
2036 | memcmp(local->essid, u, ileft) != 0)) { | |
2037 | /* not our SSID */ | |
2038 | return; | |
2039 | } | |
2040 | ||
2041 | ssid = u; | |
2042 | ssid_len = ileft; | |
2043 | ||
2044 | u += ileft; | |
2045 | left -= ileft; | |
2046 | } | |
2047 | ||
2048 | if (*u == WLAN_EID_SUPP_RATES) { | |
2049 | u++; left--; | |
2050 | ileft = *u; | |
2051 | u++; left--; | |
74fae82c | 2052 | |
ff1d2767 JM |
2053 | if (ileft > left || ileft == 0 || ileft > 8) { |
2054 | PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n"); | |
2055 | return; | |
2056 | } | |
2057 | ||
2058 | supp_rates = u; | |
2059 | supp_rates_len = ileft; | |
2060 | ||
2061 | u += ileft; | |
2062 | left -= ileft; | |
2063 | } | |
2064 | ||
2065 | if (*u == WLAN_EID_DS_PARAMS) { | |
2066 | u++; left--; | |
2067 | ileft = *u; | |
2068 | u++; left--; | |
74fae82c | 2069 | |
ff1d2767 JM |
2070 | if (ileft > left || ileft != 1) { |
2071 | PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n"); | |
2072 | return; | |
2073 | } | |
2074 | ||
2075 | channel = *u; | |
2076 | ||
2077 | u += ileft; | |
2078 | left -= ileft; | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | spin_lock_bh(&local->ap->sta_table_lock); | |
2083 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2084 | if (sta != NULL) | |
2085 | atomic_inc(&sta->users); | |
2086 | spin_unlock_bh(&local->ap->sta_table_lock); | |
2087 | ||
2088 | if (sta == NULL) { | |
2089 | /* add new AP */ | |
2090 | new_sta = 1; | |
2091 | sta = ap_add_sta(local->ap, hdr->addr2); | |
2092 | if (sta == NULL) { | |
2093 | printk(KERN_INFO "prism2: kmalloc failed for AP " | |
2094 | "data structure\n"); | |
2095 | return; | |
2096 | } | |
2097 | hostap_event_new_sta(local->dev, sta); | |
2098 | ||
2099 | /* mark APs authentication and associated for pseudo ad-hoc | |
2100 | * style communication */ | |
2101 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2102 | ||
2103 | if (local->ap->autom_ap_wds) { | |
2104 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | sta->ap = 1; | |
2109 | if (ssid) { | |
2110 | sta->u.ap.ssid_len = ssid_len; | |
2111 | memcpy(sta->u.ap.ssid, ssid, ssid_len); | |
2112 | sta->u.ap.ssid[ssid_len] = '\0'; | |
2113 | } else { | |
2114 | sta->u.ap.ssid_len = 0; | |
2115 | sta->u.ap.ssid[0] = '\0'; | |
2116 | } | |
2117 | sta->u.ap.channel = channel; | |
2118 | sta->rx_packets++; | |
2119 | sta->rx_bytes += len; | |
2120 | sta->u.ap.last_beacon = sta->last_rx = jiffies; | |
2121 | sta->capability = capability; | |
2122 | sta->listen_interval = beacon_int; | |
2123 | ||
2124 | atomic_dec(&sta->users); | |
2125 | ||
2126 | if (new_sta) { | |
2127 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
2128 | memcpy(sta->supported_rates, supp_rates, supp_rates_len); | |
2129 | prism2_check_tx_rates(sta); | |
2130 | } | |
2131 | } | |
2132 | ||
2133 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2134 | ||
2135 | ||
2136 | /* Called only as a tasklet. */ | |
2137 | static void handle_ap_item(local_info_t *local, struct sk_buff *skb, | |
2138 | struct hostap_80211_rx_status *rx_stats) | |
2139 | { | |
2140 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2141 | struct net_device *dev = local->dev; | |
2142 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2143 | u16 fc, type, stype; | |
1ea893fd | 2144 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2145 | |
2146 | /* FIX: should give skb->len to handler functions and check that the | |
2147 | * buffer is long enough */ | |
1ea893fd DW |
2148 | hdr = (struct ieee80211_hdr *) skb->data; |
2149 | fc = le16_to_cpu(hdr->frame_control); | |
2150 | type = fc & IEEE80211_FCTL_FTYPE; | |
2151 | stype = fc & IEEE80211_FCTL_STYPE; | |
ff1d2767 JM |
2152 | |
2153 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2154 | if (!local->hostapd && type == IEEE80211_FTYPE_DATA) { |
ff1d2767 JM |
2155 | PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n"); |
2156 | ||
b2f4a2e3 JM |
2157 | if (!(fc & IEEE80211_FCTL_TODS) || |
2158 | (fc & IEEE80211_FCTL_FROMDS)) { | |
4339d328 | 2159 | if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
2160 | /* no ToDS nullfunc seems to be used to check |
2161 | * AP association; so send reject message to | |
2162 | * speed up re-association */ | |
2163 | ap_handle_dropped_data(local, hdr); | |
2164 | goto done; | |
2165 | } | |
2166 | PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n", | |
2167 | fc); | |
2168 | goto done; | |
2169 | } | |
2170 | ||
d22fbd70 | 2171 | if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
e174961c JB |
2172 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=%pM" |
2173 | " not own MAC\n", hdr->addr1); | |
ff1d2767 JM |
2174 | goto done; |
2175 | } | |
2176 | ||
4339d328 JM |
2177 | if (local->ap->nullfunc_ack && |
2178 | stype == IEEE80211_STYPE_NULLFUNC) | |
ff1d2767 JM |
2179 | ap_handle_data_nullfunc(local, hdr); |
2180 | else | |
2181 | ap_handle_dropped_data(local, hdr); | |
2182 | goto done; | |
2183 | } | |
2184 | ||
4339d328 | 2185 | if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) { |
ff1d2767 JM |
2186 | handle_beacon(local, skb, rx_stats); |
2187 | goto done; | |
2188 | } | |
2189 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2190 | ||
4339d328 | 2191 | if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) { |
ff1d2767 JM |
2192 | handle_pspoll(local, hdr, rx_stats); |
2193 | goto done; | |
2194 | } | |
2195 | ||
2196 | if (local->hostapd) { | |
2197 | PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x " | |
2198 | "subtype=0x%02x\n", type, stype); | |
2199 | goto done; | |
2200 | } | |
2201 | ||
2202 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
4339d328 | 2203 | if (type != IEEE80211_FTYPE_MGMT) { |
ff1d2767 JM |
2204 | PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n"); |
2205 | goto done; | |
2206 | } | |
2207 | ||
d22fbd70 | 2208 | if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
e174961c JB |
2209 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM" |
2210 | " not own MAC\n", hdr->addr1); | |
ff1d2767 JM |
2211 | goto done; |
2212 | } | |
2213 | ||
d22fbd70 | 2214 | if (!ether_addr_equal(hdr->addr3, dev->dev_addr)) { |
e174961c JB |
2215 | PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%pM" |
2216 | " not own MAC\n", hdr->addr3); | |
ff1d2767 JM |
2217 | goto done; |
2218 | } | |
2219 | ||
2220 | switch (stype) { | |
4339d328 | 2221 | case IEEE80211_STYPE_ASSOC_REQ: |
ff1d2767 JM |
2222 | handle_assoc(local, skb, rx_stats, 0); |
2223 | break; | |
4339d328 | 2224 | case IEEE80211_STYPE_ASSOC_RESP: |
ff1d2767 JM |
2225 | PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n"); |
2226 | break; | |
4339d328 | 2227 | case IEEE80211_STYPE_REASSOC_REQ: |
ff1d2767 JM |
2228 | handle_assoc(local, skb, rx_stats, 1); |
2229 | break; | |
4339d328 | 2230 | case IEEE80211_STYPE_REASSOC_RESP: |
ff1d2767 JM |
2231 | PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n"); |
2232 | break; | |
4339d328 | 2233 | case IEEE80211_STYPE_ATIM: |
ff1d2767 JM |
2234 | PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n"); |
2235 | break; | |
4339d328 | 2236 | case IEEE80211_STYPE_DISASSOC: |
ff1d2767 JM |
2237 | handle_disassoc(local, skb, rx_stats); |
2238 | break; | |
4339d328 | 2239 | case IEEE80211_STYPE_AUTH: |
ff1d2767 JM |
2240 | handle_authen(local, skb, rx_stats); |
2241 | break; | |
4339d328 | 2242 | case IEEE80211_STYPE_DEAUTH: |
ff1d2767 JM |
2243 | handle_deauth(local, skb, rx_stats); |
2244 | break; | |
2245 | default: | |
4339d328 JM |
2246 | PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n", |
2247 | stype >> 4); | |
ff1d2767 JM |
2248 | break; |
2249 | } | |
2250 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2251 | ||
2252 | done: | |
2253 | dev_kfree_skb(skb); | |
2254 | } | |
2255 | ||
2256 | ||
2257 | /* Called only as a tasklet (software IRQ) */ | |
2258 | void hostap_rx(struct net_device *dev, struct sk_buff *skb, | |
2259 | struct hostap_80211_rx_status *rx_stats) | |
2260 | { | |
2261 | struct hostap_interface *iface; | |
2262 | local_info_t *local; | |
1ea893fd | 2263 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2264 | |
2265 | iface = netdev_priv(dev); | |
2266 | local = iface->local; | |
2267 | ||
2268 | if (skb->len < 16) | |
2269 | goto drop; | |
2270 | ||
4cfa8e45 | 2271 | dev->stats.rx_packets++; |
ff1d2767 | 2272 | |
1ea893fd | 2273 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2274 | |
2275 | if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL && | |
1ea893fd | 2276 | ieee80211_is_beacon(hdr->frame_control)) |
ff1d2767 JM |
2277 | goto drop; |
2278 | ||
c1b4aa3f | 2279 | skb->protocol = cpu_to_be16(ETH_P_HOSTAP); |
ff1d2767 JM |
2280 | handle_ap_item(local, skb, rx_stats); |
2281 | return; | |
2282 | ||
2283 | drop: | |
2284 | dev_kfree_skb(skb); | |
2285 | } | |
2286 | ||
2287 | ||
2288 | /* Called only as a tasklet (software IRQ) */ | |
2289 | static void schedule_packet_send(local_info_t *local, struct sta_info *sta) | |
2290 | { | |
2291 | struct sk_buff *skb; | |
1ea893fd | 2292 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2293 | struct hostap_80211_rx_status rx_stats; |
2294 | ||
2295 | if (skb_queue_empty(&sta->tx_buf)) | |
2296 | return; | |
2297 | ||
2298 | skb = dev_alloc_skb(16); | |
2299 | if (skb == NULL) { | |
2300 | printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc " | |
2301 | "failed\n", local->dev->name); | |
2302 | return; | |
2303 | } | |
2304 | ||
4df864c1 | 2305 | hdr = skb_put(skb, 16); |
ff1d2767 JM |
2306 | |
2307 | /* Generate a fake pspoll frame to start packet delivery */ | |
1ea893fd | 2308 | hdr->frame_control = cpu_to_le16( |
4339d328 | 2309 | IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); |
ff1d2767 JM |
2310 | memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN); |
2311 | memcpy(hdr->addr2, sta->addr, ETH_ALEN); | |
2312 | hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14)); | |
2313 | ||
e174961c JB |
2314 | PDEBUG(DEBUG_PS2, |
2315 | "%s: Scheduling buffered packet delivery for STA %pM\n", | |
2316 | local->dev->name, sta->addr); | |
ff1d2767 JM |
2317 | |
2318 | skb->dev = local->dev; | |
2319 | ||
2320 | memset(&rx_stats, 0, sizeof(rx_stats)); | |
2321 | hostap_rx(local->dev, skb, &rx_stats); | |
2322 | } | |
2323 | ||
2324 | ||
5fad5a2e AB |
2325 | int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[], |
2326 | struct iw_quality qual[], int buf_size, | |
2327 | int aplist) | |
ff1d2767 JM |
2328 | { |
2329 | struct ap_data *ap = local->ap; | |
2330 | struct list_head *ptr; | |
2331 | int count = 0; | |
2332 | ||
2333 | spin_lock_bh(&ap->sta_table_lock); | |
2334 | ||
2335 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2336 | ptr = ptr->next) { | |
2337 | struct sta_info *sta = (struct sta_info *) ptr; | |
2338 | ||
2339 | if (aplist && !sta->ap) | |
2340 | continue; | |
2341 | addr[count].sa_family = ARPHRD_ETHER; | |
2342 | memcpy(addr[count].sa_data, sta->addr, ETH_ALEN); | |
2343 | if (sta->last_rx_silence == 0) | |
2344 | qual[count].qual = sta->last_rx_signal < 27 ? | |
2345 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2346 | else | |
2347 | qual[count].qual = sta->last_rx_signal - | |
2348 | sta->last_rx_silence - 35; | |
2349 | qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2350 | qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2351 | qual[count].updated = sta->last_rx_updated; | |
2352 | ||
c28df16e | 2353 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2354 | |
2355 | count++; | |
2356 | if (count >= buf_size) | |
2357 | break; | |
2358 | } | |
2359 | spin_unlock_bh(&ap->sta_table_lock); | |
2360 | ||
2361 | return count; | |
2362 | } | |
2363 | ||
2364 | ||
25985edc | 2365 | /* Translate our list of Access Points & Stations to a card independent |
ff1d2767 | 2366 | * format that the Wireless Tools will understand - Jean II */ |
ccc58057 DM |
2367 | int prism2_ap_translate_scan(struct net_device *dev, |
2368 | struct iw_request_info *info, char *buffer) | |
ff1d2767 JM |
2369 | { |
2370 | struct hostap_interface *iface; | |
2371 | local_info_t *local; | |
2372 | struct ap_data *ap; | |
2373 | struct list_head *ptr; | |
2374 | struct iw_event iwe; | |
2375 | char *current_ev = buffer; | |
2376 | char *end_buf = buffer + IW_SCAN_MAX_DATA; | |
2377 | #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT) | |
2378 | char buf[64]; | |
2379 | #endif | |
2380 | ||
2381 | iface = netdev_priv(dev); | |
2382 | local = iface->local; | |
2383 | ap = local->ap; | |
2384 | ||
2385 | spin_lock_bh(&ap->sta_table_lock); | |
2386 | ||
2387 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; | |
2388 | ptr = ptr->next) { | |
2389 | struct sta_info *sta = (struct sta_info *) ptr; | |
2390 | ||
2391 | /* First entry *MUST* be the AP MAC address */ | |
2392 | memset(&iwe, 0, sizeof(iwe)); | |
2393 | iwe.cmd = SIOCGIWAP; | |
2394 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
2395 | memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN); | |
2396 | iwe.len = IW_EV_ADDR_LEN; | |
ccc58057 DM |
2397 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2398 | &iwe, IW_EV_ADDR_LEN); | |
ff1d2767 JM |
2399 | |
2400 | /* Use the mode to indicate if it's a station or | |
2401 | * an Access Point */ | |
2402 | memset(&iwe, 0, sizeof(iwe)); | |
2403 | iwe.cmd = SIOCGIWMODE; | |
2404 | if (sta->ap) | |
2405 | iwe.u.mode = IW_MODE_MASTER; | |
2406 | else | |
2407 | iwe.u.mode = IW_MODE_INFRA; | |
2408 | iwe.len = IW_EV_UINT_LEN; | |
ccc58057 DM |
2409 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2410 | &iwe, IW_EV_UINT_LEN); | |
ff1d2767 JM |
2411 | |
2412 | /* Some quality */ | |
2413 | memset(&iwe, 0, sizeof(iwe)); | |
2414 | iwe.cmd = IWEVQUAL; | |
2415 | if (sta->last_rx_silence == 0) | |
2416 | iwe.u.qual.qual = sta->last_rx_signal < 27 ? | |
2417 | 0 : (sta->last_rx_signal - 27) * 92 / 127; | |
2418 | else | |
2419 | iwe.u.qual.qual = sta->last_rx_signal - | |
2420 | sta->last_rx_silence - 35; | |
2421 | iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); | |
2422 | iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); | |
2423 | iwe.u.qual.updated = sta->last_rx_updated; | |
2424 | iwe.len = IW_EV_QUAL_LEN; | |
ccc58057 DM |
2425 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
2426 | &iwe, IW_EV_QUAL_LEN); | |
ff1d2767 JM |
2427 | |
2428 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2429 | if (sta->ap) { | |
2430 | memset(&iwe, 0, sizeof(iwe)); | |
2431 | iwe.cmd = SIOCGIWESSID; | |
2432 | iwe.u.data.length = sta->u.ap.ssid_len; | |
2433 | iwe.u.data.flags = 1; | |
ccc58057 DM |
2434 | current_ev = iwe_stream_add_point(info, current_ev, |
2435 | end_buf, &iwe, | |
ff1d2767 JM |
2436 | sta->u.ap.ssid); |
2437 | ||
2438 | memset(&iwe, 0, sizeof(iwe)); | |
2439 | iwe.cmd = SIOCGIWENCODE; | |
2440 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) | |
2441 | iwe.u.data.flags = | |
2442 | IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
2443 | else | |
2444 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
ccc58057 DM |
2445 | current_ev = iwe_stream_add_point(info, current_ev, |
2446 | end_buf, &iwe, | |
2447 | sta->u.ap.ssid); | |
ff1d2767 JM |
2448 | |
2449 | if (sta->u.ap.channel > 0 && | |
2450 | sta->u.ap.channel <= FREQ_COUNT) { | |
2451 | memset(&iwe, 0, sizeof(iwe)); | |
2452 | iwe.cmd = SIOCGIWFREQ; | |
2453 | iwe.u.freq.m = freq_list[sta->u.ap.channel - 1] | |
2454 | * 100000; | |
2455 | iwe.u.freq.e = 1; | |
2456 | current_ev = iwe_stream_add_event( | |
ccc58057 | 2457 | info, current_ev, end_buf, &iwe, |
ff1d2767 JM |
2458 | IW_EV_FREQ_LEN); |
2459 | } | |
2460 | ||
2461 | memset(&iwe, 0, sizeof(iwe)); | |
2462 | iwe.cmd = IWEVCUSTOM; | |
2463 | sprintf(buf, "beacon_interval=%d", | |
2464 | sta->listen_interval); | |
2465 | iwe.u.data.length = strlen(buf); | |
ccc58057 DM |
2466 | current_ev = iwe_stream_add_point(info, current_ev, |
2467 | end_buf, &iwe, buf); | |
ff1d2767 JM |
2468 | } |
2469 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2470 | ||
c28df16e | 2471 | sta->last_rx_updated = IW_QUAL_DBM; |
ff1d2767 JM |
2472 | |
2473 | /* To be continued, we should make good use of IWEVCUSTOM */ | |
2474 | } | |
2475 | ||
2476 | spin_unlock_bh(&ap->sta_table_lock); | |
2477 | ||
2478 | return current_ev - buffer; | |
2479 | } | |
2480 | ||
2481 | ||
2482 | static int prism2_hostapd_add_sta(struct ap_data *ap, | |
2483 | struct prism2_hostapd_param *param) | |
2484 | { | |
2485 | struct sta_info *sta; | |
2486 | ||
2487 | spin_lock_bh(&ap->sta_table_lock); | |
2488 | sta = ap_get_sta(ap, param->sta_addr); | |
2489 | if (sta) | |
2490 | atomic_inc(&sta->users); | |
2491 | spin_unlock_bh(&ap->sta_table_lock); | |
2492 | ||
2493 | if (sta == NULL) { | |
2494 | sta = ap_add_sta(ap, param->sta_addr); | |
2495 | if (sta == NULL) | |
2496 | return -1; | |
2497 | } | |
2498 | ||
2499 | if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2500 | hostap_event_new_sta(sta->local->dev, sta); | |
2501 | ||
2502 | sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
2503 | sta->last_rx = jiffies; | |
2504 | sta->aid = param->u.add_sta.aid; | |
2505 | sta->capability = param->u.add_sta.capability; | |
2506 | sta->tx_supp_rates = param->u.add_sta.tx_supp_rates; | |
2507 | if (sta->tx_supp_rates & WLAN_RATE_1M) | |
2508 | sta->supported_rates[0] = 2; | |
2509 | if (sta->tx_supp_rates & WLAN_RATE_2M) | |
2510 | sta->supported_rates[1] = 4; | |
2511 | if (sta->tx_supp_rates & WLAN_RATE_5M5) | |
2512 | sta->supported_rates[2] = 11; | |
2513 | if (sta->tx_supp_rates & WLAN_RATE_11M) | |
2514 | sta->supported_rates[3] = 22; | |
2515 | prism2_check_tx_rates(sta); | |
2516 | atomic_dec(&sta->users); | |
2517 | return 0; | |
2518 | } | |
2519 | ||
2520 | ||
2521 | static int prism2_hostapd_remove_sta(struct ap_data *ap, | |
2522 | struct prism2_hostapd_param *param) | |
2523 | { | |
2524 | struct sta_info *sta; | |
2525 | ||
2526 | spin_lock_bh(&ap->sta_table_lock); | |
2527 | sta = ap_get_sta(ap, param->sta_addr); | |
2528 | if (sta) { | |
2529 | ap_sta_hash_del(ap, sta); | |
2530 | list_del(&sta->list); | |
2531 | } | |
2532 | spin_unlock_bh(&ap->sta_table_lock); | |
2533 | ||
2534 | if (!sta) | |
2535 | return -ENOENT; | |
2536 | ||
2537 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) | |
2538 | hostap_event_expired_sta(sta->local->dev, sta); | |
2539 | ap_free_sta(ap, sta); | |
2540 | ||
2541 | return 0; | |
2542 | } | |
2543 | ||
2544 | ||
2545 | static int prism2_hostapd_get_info_sta(struct ap_data *ap, | |
2546 | struct prism2_hostapd_param *param) | |
2547 | { | |
2548 | struct sta_info *sta; | |
2549 | ||
2550 | spin_lock_bh(&ap->sta_table_lock); | |
2551 | sta = ap_get_sta(ap, param->sta_addr); | |
2552 | if (sta) | |
2553 | atomic_inc(&sta->users); | |
2554 | spin_unlock_bh(&ap->sta_table_lock); | |
2555 | ||
2556 | if (!sta) | |
2557 | return -ENOENT; | |
2558 | ||
2559 | param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ; | |
2560 | ||
2561 | atomic_dec(&sta->users); | |
2562 | ||
2563 | return 1; | |
2564 | } | |
2565 | ||
2566 | ||
2567 | static int prism2_hostapd_set_flags_sta(struct ap_data *ap, | |
2568 | struct prism2_hostapd_param *param) | |
2569 | { | |
2570 | struct sta_info *sta; | |
2571 | ||
2572 | spin_lock_bh(&ap->sta_table_lock); | |
2573 | sta = ap_get_sta(ap, param->sta_addr); | |
2574 | if (sta) { | |
2575 | sta->flags |= param->u.set_flags_sta.flags_or; | |
2576 | sta->flags &= param->u.set_flags_sta.flags_and; | |
2577 | } | |
2578 | spin_unlock_bh(&ap->sta_table_lock); | |
2579 | ||
2580 | if (!sta) | |
2581 | return -ENOENT; | |
2582 | ||
2583 | return 0; | |
2584 | } | |
2585 | ||
2586 | ||
2587 | static int prism2_hostapd_sta_clear_stats(struct ap_data *ap, | |
2588 | struct prism2_hostapd_param *param) | |
2589 | { | |
2590 | struct sta_info *sta; | |
2591 | int rate; | |
2592 | ||
2593 | spin_lock_bh(&ap->sta_table_lock); | |
2594 | sta = ap_get_sta(ap, param->sta_addr); | |
2595 | if (sta) { | |
2596 | sta->rx_packets = sta->tx_packets = 0; | |
2597 | sta->rx_bytes = sta->tx_bytes = 0; | |
2598 | for (rate = 0; rate < WLAN_RATE_COUNT; rate++) { | |
2599 | sta->tx_count[rate] = 0; | |
2600 | sta->rx_count[rate] = 0; | |
2601 | } | |
2602 | } | |
2603 | spin_unlock_bh(&ap->sta_table_lock); | |
2604 | ||
2605 | if (!sta) | |
2606 | return -ENOENT; | |
2607 | ||
2608 | return 0; | |
2609 | } | |
2610 | ||
2611 | ||
5fad5a2e | 2612 | int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param) |
ff1d2767 JM |
2613 | { |
2614 | switch (param->cmd) { | |
2615 | case PRISM2_HOSTAPD_FLUSH: | |
2616 | ap_control_kickall(ap); | |
2617 | return 0; | |
2618 | case PRISM2_HOSTAPD_ADD_STA: | |
2619 | return prism2_hostapd_add_sta(ap, param); | |
2620 | case PRISM2_HOSTAPD_REMOVE_STA: | |
2621 | return prism2_hostapd_remove_sta(ap, param); | |
2622 | case PRISM2_HOSTAPD_GET_INFO_STA: | |
2623 | return prism2_hostapd_get_info_sta(ap, param); | |
2624 | case PRISM2_HOSTAPD_SET_FLAGS_STA: | |
2625 | return prism2_hostapd_set_flags_sta(ap, param); | |
2626 | case PRISM2_HOSTAPD_STA_CLEAR_STATS: | |
2627 | return prism2_hostapd_sta_clear_stats(ap, param); | |
2628 | default: | |
2629 | printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n", | |
2630 | param->cmd); | |
2631 | return -EOPNOTSUPP; | |
2632 | } | |
2633 | } | |
2634 | ||
2635 | ||
2636 | /* Update station info for host-based TX rate control and return current | |
2637 | * TX rate */ | |
2638 | static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev) | |
2639 | { | |
2640 | int ret = sta->tx_rate; | |
2641 | struct hostap_interface *iface; | |
2642 | local_info_t *local; | |
2643 | ||
2644 | iface = netdev_priv(dev); | |
2645 | local = iface->local; | |
2646 | ||
2647 | sta->tx_count[sta->tx_rate_idx]++; | |
2648 | sta->tx_since_last_failure++; | |
2649 | sta->tx_consecutive_exc = 0; | |
2650 | if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT && | |
2651 | sta->tx_rate_idx < sta->tx_max_rate) { | |
2652 | /* use next higher rate */ | |
2653 | int old_rate, new_rate; | |
2654 | old_rate = new_rate = sta->tx_rate_idx; | |
2655 | while (new_rate < sta->tx_max_rate) { | |
2656 | new_rate++; | |
2657 | if (ap_tx_rate_ok(new_rate, sta, local)) { | |
2658 | sta->tx_rate_idx = new_rate; | |
2659 | break; | |
2660 | } | |
2661 | } | |
2662 | if (old_rate != sta->tx_rate_idx) { | |
2663 | switch (sta->tx_rate_idx) { | |
2664 | case 0: sta->tx_rate = 10; break; | |
2665 | case 1: sta->tx_rate = 20; break; | |
2666 | case 2: sta->tx_rate = 55; break; | |
2667 | case 3: sta->tx_rate = 110; break; | |
2668 | default: sta->tx_rate = 0; break; | |
2669 | } | |
e174961c JB |
2670 | PDEBUG(DEBUG_AP, "%s: STA %pM TX rate raised to %d\n", |
2671 | dev->name, sta->addr, sta->tx_rate); | |
ff1d2767 JM |
2672 | } |
2673 | sta->tx_since_last_failure = 0; | |
2674 | } | |
2675 | ||
2676 | return ret; | |
2677 | } | |
2678 | ||
2679 | ||
2680 | /* Called only from software IRQ. Called for each TX frame prior possible | |
2681 | * encryption and transmit. */ | |
2682 | ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx) | |
2683 | { | |
2684 | struct sta_info *sta = NULL; | |
2685 | struct sk_buff *skb = tx->skb; | |
2686 | int set_tim, ret; | |
1ea893fd | 2687 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2688 | struct hostap_skb_tx_data *meta; |
2689 | ||
2690 | meta = (struct hostap_skb_tx_data *) skb->cb; | |
2691 | ret = AP_TX_CONTINUE; | |
2692 | if (local->ap == NULL || skb->len < 10 || | |
2693 | meta->iface->type == HOSTAP_INTERFACE_STA) | |
2694 | goto out; | |
2695 | ||
1ea893fd | 2696 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2697 | |
2698 | if (hdr->addr1[0] & 0x01) { | |
2699 | /* broadcast/multicast frame - no AP related processing */ | |
b9180990 PR |
2700 | if (local->ap->num_sta <= 0) |
2701 | ret = AP_TX_DROP; | |
ff1d2767 JM |
2702 | goto out; |
2703 | } | |
2704 | ||
2705 | /* unicast packet - check whether destination STA is associated */ | |
2706 | spin_lock(&local->ap->sta_table_lock); | |
2707 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2708 | if (sta) | |
2709 | atomic_inc(&sta->users); | |
2710 | spin_unlock(&local->ap->sta_table_lock); | |
2711 | ||
5bee720f JM |
2712 | if (local->iw_mode == IW_MODE_MASTER && sta == NULL && |
2713 | !(meta->flags & HOSTAP_TX_FLAGS_WDS) && | |
ff1d2767 JM |
2714 | meta->iface->type != HOSTAP_INTERFACE_MASTER && |
2715 | meta->iface->type != HOSTAP_INTERFACE_AP) { | |
2716 | #if 0 | |
2717 | /* This can happen, e.g., when wlan0 is added to a bridge and | |
2718 | * bridging code does not know which port is the correct target | |
2719 | * for a unicast frame. In this case, the packet is send to all | |
2720 | * ports of the bridge. Since this is a valid scenario, do not | |
2721 | * print out any errors here. */ | |
2722 | if (net_ratelimit()) { | |
2723 | printk(KERN_DEBUG "AP: drop packet to non-associated " | |
e174961c | 2724 | "STA %pM\n", hdr->addr1); |
ff1d2767 JM |
2725 | } |
2726 | #endif | |
2727 | local->ap->tx_drop_nonassoc++; | |
2728 | ret = AP_TX_DROP; | |
2729 | goto out; | |
2730 | } | |
2731 | ||
2732 | if (sta == NULL) | |
2733 | goto out; | |
2734 | ||
2735 | if (!(sta->flags & WLAN_STA_AUTHORIZED)) | |
2736 | ret = AP_TX_CONTINUE_NOT_AUTHORIZED; | |
2737 | ||
2738 | /* Set tx_rate if using host-based TX rate control */ | |
2739 | if (!local->fw_tx_rate_control) | |
2740 | local->ap->last_tx_rate = meta->rate = | |
2741 | ap_update_sta_tx_rate(sta, local->dev); | |
2742 | ||
2743 | if (local->iw_mode != IW_MODE_MASTER) | |
2744 | goto out; | |
2745 | ||
2746 | if (!(sta->flags & WLAN_STA_PS)) | |
2747 | goto out; | |
2748 | ||
5bee720f JM |
2749 | if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) { |
2750 | /* indicate to STA that more frames follow */ | |
1ea893fd | 2751 | hdr->frame_control |= |
c1b4aa3f | 2752 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
5bee720f | 2753 | } |
ff1d2767 | 2754 | |
5bee720f JM |
2755 | if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) { |
2756 | /* packet was already buffered and now send due to | |
2757 | * PS poll, so do not rebuffer it */ | |
2758 | goto out; | |
ff1d2767 JM |
2759 | } |
2760 | ||
2761 | if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) { | |
e174961c JB |
2762 | PDEBUG(DEBUG_PS, "%s: No more space in STA (%pM)'s" |
2763 | "PS mode buffer\n", | |
2764 | local->dev->name, sta->addr); | |
ff1d2767 JM |
2765 | /* Make sure that TIM is set for the station (it might not be |
2766 | * after AP wlan hw reset). */ | |
2767 | /* FIX: should fix hw reset to restore bits based on STA | |
2768 | * buffer state.. */ | |
2769 | hostap_set_tim(local, sta->aid, 1); | |
2770 | sta->flags |= WLAN_STA_TIM; | |
2771 | ret = AP_TX_DROP; | |
2772 | goto out; | |
2773 | } | |
2774 | ||
2775 | /* STA in PS mode, buffer frame for later delivery */ | |
2776 | set_tim = skb_queue_empty(&sta->tx_buf); | |
2777 | skb_queue_tail(&sta->tx_buf, skb); | |
2778 | /* FIX: could save RX time to skb and expire buffered frames after | |
2779 | * some time if STA does not poll for them */ | |
2780 | ||
2781 | if (set_tim) { | |
2782 | if (sta->flags & WLAN_STA_TIM) | |
2783 | PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n", | |
2784 | sta->aid); | |
2785 | hostap_set_tim(local, sta->aid, 1); | |
2786 | sta->flags |= WLAN_STA_TIM; | |
2787 | } | |
2788 | ||
2789 | ret = AP_TX_BUFFERED; | |
2790 | ||
2791 | out: | |
2792 | if (sta != NULL) { | |
2793 | if (ret == AP_TX_CONTINUE || | |
2794 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) { | |
2795 | sta->tx_packets++; | |
2796 | sta->tx_bytes += skb->len; | |
2797 | sta->last_tx = jiffies; | |
2798 | } | |
2799 | ||
2800 | if ((ret == AP_TX_CONTINUE || | |
2801 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) && | |
2802 | sta->crypt && tx->host_encrypt) { | |
2803 | tx->crypt = sta->crypt; | |
2804 | tx->sta_ptr = sta; /* hostap_handle_sta_release() will | |
2805 | * be called to release sta info | |
2806 | * later */ | |
2807 | } else | |
2808 | atomic_dec(&sta->users); | |
2809 | } | |
2810 | ||
2811 | return ret; | |
2812 | } | |
2813 | ||
2814 | ||
2815 | void hostap_handle_sta_release(void *ptr) | |
2816 | { | |
2817 | struct sta_info *sta = ptr; | |
2818 | atomic_dec(&sta->users); | |
2819 | } | |
2820 | ||
2821 | ||
2822 | /* Called only as a tasklet (software IRQ) */ | |
2823 | void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb) | |
2824 | { | |
2825 | struct sta_info *sta; | |
1ea893fd | 2826 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2827 | struct hostap_skb_tx_data *meta; |
2828 | ||
1ea893fd | 2829 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 JM |
2830 | meta = (struct hostap_skb_tx_data *) skb->cb; |
2831 | ||
2832 | spin_lock(&local->ap->sta_table_lock); | |
2833 | sta = ap_get_sta(local->ap, hdr->addr1); | |
2834 | if (!sta) { | |
2835 | spin_unlock(&local->ap->sta_table_lock); | |
e174961c | 2836 | PDEBUG(DEBUG_AP, "%s: Could not find STA %pM" |
0795af57 | 2837 | " for this TX error (@%lu)\n", |
e174961c | 2838 | local->dev->name, hdr->addr1, jiffies); |
ff1d2767 JM |
2839 | return; |
2840 | } | |
2841 | ||
2842 | sta->tx_since_last_failure = 0; | |
2843 | sta->tx_consecutive_exc++; | |
74fae82c | 2844 | |
ff1d2767 JM |
2845 | if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD && |
2846 | sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) { | |
2847 | /* use next lower rate */ | |
2848 | int old, rate; | |
2849 | old = rate = sta->tx_rate_idx; | |
2850 | while (rate > 0) { | |
2851 | rate--; | |
2852 | if (ap_tx_rate_ok(rate, sta, local)) { | |
2853 | sta->tx_rate_idx = rate; | |
2854 | break; | |
2855 | } | |
2856 | } | |
2857 | if (old != sta->tx_rate_idx) { | |
2858 | switch (sta->tx_rate_idx) { | |
2859 | case 0: sta->tx_rate = 10; break; | |
2860 | case 1: sta->tx_rate = 20; break; | |
2861 | case 2: sta->tx_rate = 55; break; | |
2862 | case 3: sta->tx_rate = 110; break; | |
2863 | default: sta->tx_rate = 0; break; | |
2864 | } | |
e174961c JB |
2865 | PDEBUG(DEBUG_AP, |
2866 | "%s: STA %pM TX rate lowered to %d\n", | |
2867 | local->dev->name, sta->addr, sta->tx_rate); | |
ff1d2767 JM |
2868 | } |
2869 | sta->tx_consecutive_exc = 0; | |
2870 | } | |
2871 | spin_unlock(&local->ap->sta_table_lock); | |
2872 | } | |
2873 | ||
2874 | ||
2875 | static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta, | |
2876 | int pwrmgt, int type, int stype) | |
2877 | { | |
2878 | if (pwrmgt && !(sta->flags & WLAN_STA_PS)) { | |
2879 | sta->flags |= WLAN_STA_PS; | |
e174961c | 2880 | PDEBUG(DEBUG_PS2, "STA %pM changed to use PS " |
ff1d2767 | 2881 | "mode (type=0x%02X, stype=0x%02X)\n", |
e174961c | 2882 | sta->addr, type >> 2, stype >> 4); |
ff1d2767 JM |
2883 | } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) { |
2884 | sta->flags &= ~WLAN_STA_PS; | |
e174961c | 2885 | PDEBUG(DEBUG_PS2, "STA %pM changed to not use " |
ff1d2767 | 2886 | "PS mode (type=0x%02X, stype=0x%02X)\n", |
e174961c | 2887 | sta->addr, type >> 2, stype >> 4); |
4339d328 JM |
2888 | if (type != IEEE80211_FTYPE_CTL || |
2889 | stype != IEEE80211_STYPE_PSPOLL) | |
ff1d2767 JM |
2890 | schedule_packet_send(local, sta); |
2891 | } | |
2892 | } | |
2893 | ||
2894 | ||
2895 | /* Called only as a tasklet (software IRQ). Called for each RX frame to update | |
1ea893fd DW |
2896 | * STA power saving state. pwrmgt is a flag from 802.11 frame_control field. */ |
2897 | int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr) | |
ff1d2767 JM |
2898 | { |
2899 | struct sta_info *sta; | |
2900 | u16 fc; | |
2901 | ||
2902 | spin_lock(&local->ap->sta_table_lock); | |
2903 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2904 | if (sta) | |
2905 | atomic_inc(&sta->users); | |
2906 | spin_unlock(&local->ap->sta_table_lock); | |
2907 | ||
2908 | if (!sta) | |
2909 | return -1; | |
2910 | ||
1ea893fd | 2911 | fc = le16_to_cpu(hdr->frame_control); |
b2f4a2e3 | 2912 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
1ea893fd DW |
2913 | fc & IEEE80211_FCTL_FTYPE, |
2914 | fc & IEEE80211_FCTL_STYPE); | |
ff1d2767 JM |
2915 | |
2916 | atomic_dec(&sta->users); | |
2917 | return 0; | |
2918 | } | |
2919 | ||
2920 | ||
2921 | /* Called only as a tasklet (software IRQ). Called for each RX frame after | |
2922 | * getting RX header and payload from hardware. */ | |
2923 | ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev, | |
2924 | struct sk_buff *skb, | |
2925 | struct hostap_80211_rx_status *rx_stats, | |
2926 | int wds) | |
2927 | { | |
2928 | int ret; | |
2929 | struct sta_info *sta; | |
2930 | u16 fc, type, stype; | |
1ea893fd | 2931 | struct ieee80211_hdr *hdr; |
ff1d2767 JM |
2932 | |
2933 | if (local->ap == NULL) | |
2934 | return AP_RX_CONTINUE; | |
2935 | ||
1ea893fd | 2936 | hdr = (struct ieee80211_hdr *) skb->data; |
ff1d2767 | 2937 | |
1ea893fd DW |
2938 | fc = le16_to_cpu(hdr->frame_control); |
2939 | type = fc & IEEE80211_FCTL_FTYPE; | |
2940 | stype = fc & IEEE80211_FCTL_STYPE; | |
ff1d2767 JM |
2941 | |
2942 | spin_lock(&local->ap->sta_table_lock); | |
2943 | sta = ap_get_sta(local->ap, hdr->addr2); | |
2944 | if (sta) | |
2945 | atomic_inc(&sta->users); | |
2946 | spin_unlock(&local->ap->sta_table_lock); | |
2947 | ||
2948 | if (sta && !(sta->flags & WLAN_STA_AUTHORIZED)) | |
2949 | ret = AP_RX_CONTINUE_NOT_AUTHORIZED; | |
2950 | else | |
2951 | ret = AP_RX_CONTINUE; | |
2952 | ||
2953 | ||
b2f4a2e3 | 2954 | if (fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
2955 | if (!wds && (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) { |
2956 | if (local->hostapd) { | |
2957 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
2958 | PRISM2_RX_NON_ASSOC); | |
2959 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2960 | } else { | |
2961 | printk(KERN_DEBUG "%s: dropped received packet" | |
e174961c | 2962 | " from non-associated STA %pM" |
ff1d2767 | 2963 | " (type=0x%02x, subtype=0x%02x)\n", |
e174961c | 2964 | dev->name, hdr->addr2, |
4339d328 | 2965 | type >> 2, stype >> 4); |
ff1d2767 JM |
2966 | hostap_rx(dev, skb, rx_stats); |
2967 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
2968 | } | |
2969 | ret = AP_RX_EXIT; | |
2970 | goto out; | |
2971 | } | |
b2f4a2e3 | 2972 | } else if (fc & IEEE80211_FCTL_FROMDS) { |
ff1d2767 JM |
2973 | if (!wds) { |
2974 | /* FromDS frame - not for us; probably | |
2975 | * broadcast/multicast in another BSS - drop */ | |
d22fbd70 | 2976 | if (ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
ff1d2767 JM |
2977 | printk(KERN_DEBUG "Odd.. FromDS packet " |
2978 | "received with own BSSID\n"); | |
2979 | hostap_dump_rx_80211(dev->name, skb, rx_stats); | |
2980 | } | |
2981 | ret = AP_RX_DROP; | |
2982 | goto out; | |
2983 | } | |
4339d328 | 2984 | } else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL && |
d22fbd70 | 2985 | ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
ff1d2767 JM |
2986 | |
2987 | if (local->hostapd) { | |
2988 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
2989 | PRISM2_RX_NON_ASSOC); | |
2990 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
2991 | } else { | |
2992 | /* At least Lucent f/w seems to send data::nullfunc | |
2993 | * frames with no ToDS flag when the current AP returns | |
2994 | * after being unavailable for some time. Speed up | |
2995 | * re-association by informing the station about it not | |
2996 | * being associated. */ | |
e174961c JB |
2997 | printk(KERN_DEBUG "%s: rejected received nullfunc frame" |
2998 | " without ToDS from not associated STA %pM\n", | |
2999 | dev->name, hdr->addr2); | |
ff1d2767 JM |
3000 | hostap_rx(dev, skb, rx_stats); |
3001 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3002 | } | |
3003 | ret = AP_RX_EXIT; | |
3004 | goto out; | |
4339d328 | 3005 | } else if (stype == IEEE80211_STYPE_NULLFUNC) { |
ff1d2767 JM |
3006 | /* At least Lucent cards seem to send periodic nullfunc |
3007 | * frames with ToDS. Let these through to update SQ | |
3008 | * stats and PS state. Nullfunc frames do not contain | |
3009 | * any data and they will be dropped below. */ | |
3010 | } else { | |
3011 | /* If BSSID (Addr3) is foreign, this frame is a normal | |
3012 | * broadcast frame from an IBSS network. Drop it silently. | |
3013 | * If BSSID is own, report the dropping of this frame. */ | |
d22fbd70 | 3014 | if (ether_addr_equal(hdr->addr3, dev->dev_addr)) { |
e174961c JB |
3015 | printk(KERN_DEBUG "%s: dropped received packet from %pM" |
3016 | " with no ToDS flag " | |
0795af57 | 3017 | "(type=0x%02x, subtype=0x%02x)\n", dev->name, |
e174961c | 3018 | hdr->addr2, type >> 2, stype >> 4); |
ff1d2767 JM |
3019 | hostap_dump_rx_80211(dev->name, skb, rx_stats); |
3020 | } | |
3021 | ret = AP_RX_DROP; | |
3022 | goto out; | |
3023 | } | |
3024 | ||
3025 | if (sta) { | |
b2f4a2e3 | 3026 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
ff1d2767 JM |
3027 | type, stype); |
3028 | ||
3029 | sta->rx_packets++; | |
3030 | sta->rx_bytes += skb->len; | |
3031 | sta->last_rx = jiffies; | |
3032 | } | |
3033 | ||
4339d328 | 3034 | if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC && |
b2f4a2e3 | 3035 | fc & IEEE80211_FCTL_TODS) { |
ff1d2767 JM |
3036 | if (local->hostapd) { |
3037 | prism2_rx_80211(local->apdev, skb, rx_stats, | |
3038 | PRISM2_RX_NULLFUNC_ACK); | |
3039 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
3040 | } else { | |
3041 | /* some STA f/w's seem to require control::ACK frame | |
3042 | * for data::nullfunc, but Prism2 f/w 0.8.0 (at least | |
3043 | * from Compaq) does not send this.. Try to generate | |
3044 | * ACK for these frames from the host driver to make | |
3045 | * power saving work with, e.g., Lucent WaveLAN f/w */ | |
3046 | hostap_rx(dev, skb, rx_stats); | |
3047 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
3048 | } | |
3049 | ret = AP_RX_EXIT; | |
3050 | goto out; | |
3051 | } | |
3052 | ||
3053 | out: | |
3054 | if (sta) | |
3055 | atomic_dec(&sta->users); | |
3056 | ||
3057 | return ret; | |
3058 | } | |
3059 | ||
3060 | ||
3061 | /* Called only as a tasklet (software IRQ) */ | |
3062 | int hostap_handle_sta_crypto(local_info_t *local, | |
1ea893fd | 3063 | struct ieee80211_hdr *hdr, |
274bfb8d | 3064 | struct lib80211_crypt_data **crypt, |
62fe7e37 | 3065 | void **sta_ptr) |
ff1d2767 JM |
3066 | { |
3067 | struct sta_info *sta; | |
3068 | ||
3069 | spin_lock(&local->ap->sta_table_lock); | |
3070 | sta = ap_get_sta(local->ap, hdr->addr2); | |
3071 | if (sta) | |
3072 | atomic_inc(&sta->users); | |
3073 | spin_unlock(&local->ap->sta_table_lock); | |
3074 | ||
3075 | if (!sta) | |
3076 | return -1; | |
3077 | ||
3078 | if (sta->crypt) { | |
3079 | *crypt = sta->crypt; | |
3080 | *sta_ptr = sta; | |
3081 | /* hostap_handle_sta_release() will be called to release STA | |
3082 | * info */ | |
3083 | } else | |
3084 | atomic_dec(&sta->users); | |
3085 | ||
3086 | return 0; | |
3087 | } | |
3088 | ||
3089 | ||
3090 | /* Called only as a tasklet (software IRQ) */ | |
3091 | int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr) | |
3092 | { | |
3093 | struct sta_info *sta; | |
3094 | int ret = 0; | |
3095 | ||
3096 | spin_lock(&ap->sta_table_lock); | |
3097 | sta = ap_get_sta(ap, sta_addr); | |
3098 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap) | |
3099 | ret = 1; | |
3100 | spin_unlock(&ap->sta_table_lock); | |
3101 | ||
3102 | return ret; | |
3103 | } | |
3104 | ||
3105 | ||
3106 | /* Called only as a tasklet (software IRQ) */ | |
3107 | int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr) | |
3108 | { | |
3109 | struct sta_info *sta; | |
3110 | int ret = 0; | |
3111 | ||
3112 | spin_lock(&ap->sta_table_lock); | |
3113 | sta = ap_get_sta(ap, sta_addr); | |
3114 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap && | |
3115 | ((sta->flags & WLAN_STA_AUTHORIZED) || | |
3116 | ap->local->ieee_802_1x == 0)) | |
3117 | ret = 1; | |
3118 | spin_unlock(&ap->sta_table_lock); | |
3119 | ||
3120 | return ret; | |
3121 | } | |
3122 | ||
3123 | ||
3124 | /* Called only as a tasklet (software IRQ) */ | |
3125 | int hostap_add_sta(struct ap_data *ap, u8 *sta_addr) | |
3126 | { | |
3127 | struct sta_info *sta; | |
3128 | int ret = 1; | |
3129 | ||
3130 | if (!ap) | |
3131 | return -1; | |
3132 | ||
3133 | spin_lock(&ap->sta_table_lock); | |
3134 | sta = ap_get_sta(ap, sta_addr); | |
3135 | if (sta) | |
3136 | ret = 0; | |
3137 | spin_unlock(&ap->sta_table_lock); | |
3138 | ||
3139 | if (ret == 1) { | |
3140 | sta = ap_add_sta(ap, sta_addr); | |
3141 | if (!sta) | |
54b85f48 | 3142 | return -1; |
ff1d2767 JM |
3143 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; |
3144 | sta->ap = 1; | |
3145 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
3146 | /* No way of knowing which rates are supported since we did not | |
3147 | * get supported rates element from beacon/assoc req. Assume | |
3148 | * that remote end supports all 802.11b rates. */ | |
3149 | sta->supported_rates[0] = 0x82; | |
3150 | sta->supported_rates[1] = 0x84; | |
3151 | sta->supported_rates[2] = 0x0b; | |
3152 | sta->supported_rates[3] = 0x16; | |
3153 | sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M | | |
3154 | WLAN_RATE_5M5 | WLAN_RATE_11M; | |
3155 | sta->tx_rate = 110; | |
3156 | sta->tx_max_rate = sta->tx_rate_idx = 3; | |
3157 | } | |
3158 | ||
3159 | return ret; | |
3160 | } | |
3161 | ||
3162 | ||
3163 | /* Called only as a tasklet (software IRQ) */ | |
3164 | int hostap_update_rx_stats(struct ap_data *ap, | |
1ea893fd | 3165 | struct ieee80211_hdr *hdr, |
ff1d2767 JM |
3166 | struct hostap_80211_rx_status *rx_stats) |
3167 | { | |
3168 | struct sta_info *sta; | |
3169 | ||
3170 | if (!ap) | |
3171 | return -1; | |
3172 | ||
3173 | spin_lock(&ap->sta_table_lock); | |
3174 | sta = ap_get_sta(ap, hdr->addr2); | |
3175 | if (sta) { | |
3176 | sta->last_rx_silence = rx_stats->noise; | |
3177 | sta->last_rx_signal = rx_stats->signal; | |
3178 | sta->last_rx_rate = rx_stats->rate; | |
c28df16e | 3179 | sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
ff1d2767 JM |
3180 | if (rx_stats->rate == 10) |
3181 | sta->rx_count[0]++; | |
3182 | else if (rx_stats->rate == 20) | |
3183 | sta->rx_count[1]++; | |
3184 | else if (rx_stats->rate == 55) | |
3185 | sta->rx_count[2]++; | |
3186 | else if (rx_stats->rate == 110) | |
3187 | sta->rx_count[3]++; | |
3188 | } | |
3189 | spin_unlock(&ap->sta_table_lock); | |
3190 | ||
3191 | return sta ? 0 : -1; | |
3192 | } | |
3193 | ||
3194 | ||
3195 | void hostap_update_rates(local_info_t *local) | |
3196 | { | |
c1505731 | 3197 | struct sta_info *sta; |
ff1d2767 JM |
3198 | struct ap_data *ap = local->ap; |
3199 | ||
3200 | if (!ap) | |
3201 | return; | |
3202 | ||
3203 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 3204 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
3205 | prism2_check_tx_rates(sta); |
3206 | } | |
3207 | spin_unlock_bh(&ap->sta_table_lock); | |
3208 | } | |
3209 | ||
3210 | ||
5fad5a2e | 3211 | void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent, |
274bfb8d | 3212 | struct lib80211_crypt_data ***crypt) |
ff1d2767 JM |
3213 | { |
3214 | struct sta_info *sta; | |
3215 | ||
3216 | spin_lock_bh(&ap->sta_table_lock); | |
3217 | sta = ap_get_sta(ap, addr); | |
3218 | if (sta) | |
3219 | atomic_inc(&sta->users); | |
3220 | spin_unlock_bh(&ap->sta_table_lock); | |
3221 | ||
3222 | if (!sta && permanent) | |
3223 | sta = ap_add_sta(ap, addr); | |
3224 | ||
3225 | if (!sta) | |
3226 | return NULL; | |
3227 | ||
3228 | if (permanent) | |
3229 | sta->flags |= WLAN_STA_PERM; | |
3230 | ||
3231 | *crypt = &sta->crypt; | |
3232 | ||
3233 | return sta; | |
3234 | } | |
3235 | ||
3236 | ||
3237 | void hostap_add_wds_links(local_info_t *local) | |
3238 | { | |
3239 | struct ap_data *ap = local->ap; | |
c1505731 | 3240 | struct sta_info *sta; |
ff1d2767 JM |
3241 | |
3242 | spin_lock_bh(&ap->sta_table_lock); | |
c1505731 | 3243 | list_for_each_entry(sta, &ap->sta_list, list) { |
ff1d2767 JM |
3244 | if (sta->ap) |
3245 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); | |
3246 | } | |
3247 | spin_unlock_bh(&ap->sta_table_lock); | |
3248 | ||
3249 | schedule_work(&local->ap->wds_oper_queue); | |
3250 | } | |
3251 | ||
3252 | ||
3253 | void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type) | |
3254 | { | |
3255 | struct wds_oper_data *entry; | |
3256 | ||
3257 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
3258 | if (!entry) | |
3259 | return; | |
3260 | memcpy(entry->addr, addr, ETH_ALEN); | |
3261 | entry->type = type; | |
3262 | spin_lock_bh(&local->lock); | |
3263 | entry->next = local->ap->wds_oper_entries; | |
3264 | local->ap->wds_oper_entries = entry; | |
3265 | spin_unlock_bh(&local->lock); | |
3266 | ||
3267 | schedule_work(&local->ap->wds_oper_queue); | |
3268 | } | |
3269 | ||
3270 | ||
3271 | EXPORT_SYMBOL(hostap_init_data); | |
3272 | EXPORT_SYMBOL(hostap_init_ap_proc); | |
3273 | EXPORT_SYMBOL(hostap_free_data); | |
3274 | EXPORT_SYMBOL(hostap_check_sta_fw_version); | |
ff1d2767 | 3275 | EXPORT_SYMBOL(hostap_handle_sta_tx_exc); |
ff1d2767 | 3276 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
ff1d2767 | 3277 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |