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1/*
2 * Host AP (software wireless LAN access point) driver for
3 * Intersil Prism2/2.5/3 - hostap.o module, common routines
4 *
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
6 * <j@w1.fi>
7 * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation. See README and COPYING for
12 * more details.
13 */
14
15#include <linux/module.h>
16#include <linux/init.h>
17#include <linux/slab.h>
18#include <linux/proc_fs.h>
19#include <linux/if_arp.h>
20#include <linux/delay.h>
21#include <linux/random.h>
22#include <linux/workqueue.h>
23#include <linux/kmod.h>
24#include <linux/rtnetlink.h>
25#include <linux/wireless.h>
26#include <linux/etherdevice.h>
27#include <net/net_namespace.h>
28#include <net/iw_handler.h>
29#include <net/lib80211.h>
30#include <asm/uaccess.h>
31
32#include "hostap_wlan.h"
33#include "hostap_80211.h"
34#include "hostap_ap.h"
35#include "hostap.h"
36
37MODULE_AUTHOR("Jouni Malinen");
38MODULE_DESCRIPTION("Host AP common routines");
39MODULE_LICENSE("GPL");
40
41#define TX_TIMEOUT (2 * HZ)
42
43#define PRISM2_MAX_FRAME_SIZE 2304
44#define PRISM2_MIN_MTU 256
45/* FIX: */
46#define PRISM2_MAX_MTU (PRISM2_MAX_FRAME_SIZE - (6 /* LLC */ + 8 /* WEP */))
47
48
49struct net_device * hostap_add_interface(struct local_info *local,
50 int type, int rtnl_locked,
51 const char *prefix,
52 const char *name)
53{
54 struct net_device *dev, *mdev;
55 struct hostap_interface *iface;
56 int ret;
57
58 dev = alloc_etherdev(sizeof(struct hostap_interface));
59 if (dev == NULL)
60 return NULL;
61
62 iface = netdev_priv(dev);
63 iface->dev = dev;
64 iface->local = local;
65 iface->type = type;
66 list_add(&iface->list, &local->hostap_interfaces);
67
68 mdev = local->dev;
69 memcpy(dev->dev_addr, mdev->dev_addr, ETH_ALEN);
70 dev->base_addr = mdev->base_addr;
71 dev->irq = mdev->irq;
72 dev->mem_start = mdev->mem_start;
73 dev->mem_end = mdev->mem_end;
74
75 hostap_setup_dev(dev, local, type);
76 dev->destructor = free_netdev;
77
78 sprintf(dev->name, "%s%s", prefix, name);
79 if (!rtnl_locked)
80 rtnl_lock();
81
82 SET_NETDEV_DEV(dev, mdev->dev.parent);
83 ret = register_netdevice(dev);
84
85 if (!rtnl_locked)
86 rtnl_unlock();
87
88 if (ret < 0) {
89 printk(KERN_WARNING "%s: failed to add new netdevice!\n",
90 dev->name);
91 free_netdev(dev);
92 return NULL;
93 }
94
95 printk(KERN_DEBUG "%s: registered netdevice %s\n",
96 mdev->name, dev->name);
97
98 return dev;
99}
100
101
102void hostap_remove_interface(struct net_device *dev, int rtnl_locked,
103 int remove_from_list)
104{
105 struct hostap_interface *iface;
106
107 if (!dev)
108 return;
109
110 iface = netdev_priv(dev);
111
112 if (remove_from_list) {
113 list_del(&iface->list);
114 }
115
116 if (dev == iface->local->ddev)
117 iface->local->ddev = NULL;
118 else if (dev == iface->local->apdev)
119 iface->local->apdev = NULL;
120 else if (dev == iface->local->stadev)
121 iface->local->stadev = NULL;
122
123 if (rtnl_locked)
124 unregister_netdevice(dev);
125 else
126 unregister_netdev(dev);
127
128 /* dev->destructor = free_netdev() will free the device data, including
129 * private data, when removing the device */
130}
131
132
133static inline int prism2_wds_special_addr(u8 *addr)
134{
135 if (addr[0] || addr[1] || addr[2] || addr[3] || addr[4] || addr[5])
136 return 0;
137
138 return 1;
139}
140
141
142int prism2_wds_add(local_info_t *local, u8 *remote_addr,
143 int rtnl_locked)
144{
145 struct net_device *dev;
146 struct list_head *ptr;
147 struct hostap_interface *iface, *empty, *match;
148
149 empty = match = NULL;
150 read_lock_bh(&local->iface_lock);
151 list_for_each(ptr, &local->hostap_interfaces) {
152 iface = list_entry(ptr, struct hostap_interface, list);
153 if (iface->type != HOSTAP_INTERFACE_WDS)
154 continue;
155
156 if (prism2_wds_special_addr(iface->u.wds.remote_addr))
157 empty = iface;
158 else if (memcmp(iface->u.wds.remote_addr, remote_addr,
159 ETH_ALEN) == 0) {
160 match = iface;
161 break;
162 }
163 }
164 if (!match && empty && !prism2_wds_special_addr(remote_addr)) {
165 /* take pre-allocated entry into use */
166 memcpy(empty->u.wds.remote_addr, remote_addr, ETH_ALEN);
167 read_unlock_bh(&local->iface_lock);
168 printk(KERN_DEBUG "%s: using pre-allocated WDS netdevice %s\n",
169 local->dev->name, empty->dev->name);
170 return 0;
171 }
172 read_unlock_bh(&local->iface_lock);
173
174 if (!prism2_wds_special_addr(remote_addr)) {
175 if (match)
176 return -EEXIST;
177 hostap_add_sta(local->ap, remote_addr);
178 }
179
180 if (local->wds_connections >= local->wds_max_connections)
181 return -ENOBUFS;
182
183 /* verify that there is room for wds# postfix in the interface name */
184 if (strlen(local->dev->name) >= IFNAMSIZ - 5) {
185 printk(KERN_DEBUG "'%s' too long base device name\n",
186 local->dev->name);
187 return -EINVAL;
188 }
189
190 dev = hostap_add_interface(local, HOSTAP_INTERFACE_WDS, rtnl_locked,
191 local->ddev->name, "wds%d");
192 if (dev == NULL)
193 return -ENOMEM;
194
195 iface = netdev_priv(dev);
196 memcpy(iface->u.wds.remote_addr, remote_addr, ETH_ALEN);
197
198 local->wds_connections++;
199
200 return 0;
201}
202
203
204int prism2_wds_del(local_info_t *local, u8 *remote_addr,
205 int rtnl_locked, int do_not_remove)
206{
207 unsigned long flags;
208 struct list_head *ptr;
209 struct hostap_interface *iface, *selected = NULL;
210
211 write_lock_irqsave(&local->iface_lock, flags);
212 list_for_each(ptr, &local->hostap_interfaces) {
213 iface = list_entry(ptr, struct hostap_interface, list);
214 if (iface->type != HOSTAP_INTERFACE_WDS)
215 continue;
216
217 if (memcmp(iface->u.wds.remote_addr, remote_addr,
218 ETH_ALEN) == 0) {
219 selected = iface;
220 break;
221 }
222 }
223 if (selected && !do_not_remove)
224 list_del(&selected->list);
225 write_unlock_irqrestore(&local->iface_lock, flags);
226
227 if (selected) {
228 if (do_not_remove)
229 memset(selected->u.wds.remote_addr, 0, ETH_ALEN);
230 else {
231 hostap_remove_interface(selected->dev, rtnl_locked, 0);
232 local->wds_connections--;
233 }
234 }
235
236 return selected ? 0 : -ENODEV;
237}
238
239
240u16 hostap_tx_callback_register(local_info_t *local,
241 void (*func)(struct sk_buff *, int ok, void *),
242 void *data)
243{
244 unsigned long flags;
245 struct hostap_tx_callback_info *entry;
246
247 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
248 if (entry == NULL)
249 return 0;
250
251 entry->func = func;
252 entry->data = data;
253
254 spin_lock_irqsave(&local->lock, flags);
255 entry->idx = local->tx_callback ? local->tx_callback->idx + 1 : 1;
256 entry->next = local->tx_callback;
257 local->tx_callback = entry;
258 spin_unlock_irqrestore(&local->lock, flags);
259
260 return entry->idx;
261}
262
263
264int hostap_tx_callback_unregister(local_info_t *local, u16 idx)
265{
266 unsigned long flags;
267 struct hostap_tx_callback_info *cb, *prev = NULL;
268
269 spin_lock_irqsave(&local->lock, flags);
270 cb = local->tx_callback;
271 while (cb != NULL && cb->idx != idx) {
272 prev = cb;
273 cb = cb->next;
274 }
275 if (cb) {
276 if (prev == NULL)
277 local->tx_callback = cb->next;
278 else
279 prev->next = cb->next;
280 kfree(cb);
281 }
282 spin_unlock_irqrestore(&local->lock, flags);
283
284 return cb ? 0 : -1;
285}
286
287
288/* val is in host byte order */
289int hostap_set_word(struct net_device *dev, int rid, u16 val)
290{
291 struct hostap_interface *iface;
292 __le16 tmp = cpu_to_le16(val);
293 iface = netdev_priv(dev);
294 return iface->local->func->set_rid(dev, rid, &tmp, 2);
295}
296
297
298int hostap_set_string(struct net_device *dev, int rid, const char *val)
299{
300 struct hostap_interface *iface;
301 char buf[MAX_SSID_LEN + 2];
302 int len;
303
304 iface = netdev_priv(dev);
305 len = strlen(val);
306 if (len > MAX_SSID_LEN)
307 return -1;
308 memset(buf, 0, sizeof(buf));
309 buf[0] = len; /* little endian 16 bit word */
310 memcpy(buf + 2, val, len);
311
312 return iface->local->func->set_rid(dev, rid, &buf, MAX_SSID_LEN + 2);
313}
314
315
316u16 hostap_get_porttype(local_info_t *local)
317{
318 if (local->iw_mode == IW_MODE_ADHOC && local->pseudo_adhoc)
319 return HFA384X_PORTTYPE_PSEUDO_IBSS;
320 if (local->iw_mode == IW_MODE_ADHOC)
321 return HFA384X_PORTTYPE_IBSS;
322 if (local->iw_mode == IW_MODE_INFRA)
323 return HFA384X_PORTTYPE_BSS;
324 if (local->iw_mode == IW_MODE_REPEAT)
325 return HFA384X_PORTTYPE_WDS;
326 if (local->iw_mode == IW_MODE_MONITOR)
327 return HFA384X_PORTTYPE_PSEUDO_IBSS;
328 return HFA384X_PORTTYPE_HOSTAP;
329}
330
331
332int hostap_set_encryption(local_info_t *local)
333{
334 u16 val, old_val;
335 int i, keylen, len, idx;
336 char keybuf[WEP_KEY_LEN + 1];
337 enum { NONE, WEP, OTHER } encrypt_type;
338
339 idx = local->crypt_info.tx_keyidx;
340 if (local->crypt_info.crypt[idx] == NULL ||
341 local->crypt_info.crypt[idx]->ops == NULL)
342 encrypt_type = NONE;
343 else if (strcmp(local->crypt_info.crypt[idx]->ops->name, "WEP") == 0)
344 encrypt_type = WEP;
345 else
346 encrypt_type = OTHER;
347
348 if (local->func->get_rid(local->dev, HFA384X_RID_CNFWEPFLAGS, &val, 2,
349 1) < 0) {
350 printk(KERN_DEBUG "Could not read current WEP flags.\n");
351 goto fail;
352 }
353 le16_to_cpus(&val);
354 old_val = val;
355
356 if (encrypt_type != NONE || local->privacy_invoked)
357 val |= HFA384X_WEPFLAGS_PRIVACYINVOKED;
358 else
359 val &= ~HFA384X_WEPFLAGS_PRIVACYINVOKED;
360
361 if (local->open_wep || encrypt_type == NONE ||
362 ((local->ieee_802_1x || local->wpa) && local->host_decrypt))
363 val &= ~HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED;
364 else
365 val |= HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED;
366
367 if ((encrypt_type != NONE || local->privacy_invoked) &&
368 (encrypt_type == OTHER || local->host_encrypt))
369 val |= HFA384X_WEPFLAGS_HOSTENCRYPT;
370 else
371 val &= ~HFA384X_WEPFLAGS_HOSTENCRYPT;
372 if ((encrypt_type != NONE || local->privacy_invoked) &&
373 (encrypt_type == OTHER || local->host_decrypt))
374 val |= HFA384X_WEPFLAGS_HOSTDECRYPT;
375 else
376 val &= ~HFA384X_WEPFLAGS_HOSTDECRYPT;
377
378 if (val != old_val &&
379 hostap_set_word(local->dev, HFA384X_RID_CNFWEPFLAGS, val)) {
380 printk(KERN_DEBUG "Could not write new WEP flags (0x%x)\n",
381 val);
382 goto fail;
383 }
384
385 if (encrypt_type != WEP)
386 return 0;
387
388 /* 104-bit support seems to require that all the keys are set to the
389 * same keylen */
390 keylen = 6; /* first 5 octets */
391 len = local->crypt_info.crypt[idx]->ops->get_key(keybuf, sizeof(keybuf), NULL,
392 local->crypt_info.crypt[idx]->priv);
393 if (idx >= 0 && idx < WEP_KEYS && len > 5)
394 keylen = WEP_KEY_LEN + 1; /* first 13 octets */
395
396 for (i = 0; i < WEP_KEYS; i++) {
397 memset(keybuf, 0, sizeof(keybuf));
398 if (local->crypt_info.crypt[i]) {
399 (void) local->crypt_info.crypt[i]->ops->get_key(
400 keybuf, sizeof(keybuf),
401 NULL, local->crypt_info.crypt[i]->priv);
402 }
403 if (local->func->set_rid(local->dev,
404 HFA384X_RID_CNFDEFAULTKEY0 + i,
405 keybuf, keylen)) {
406 printk(KERN_DEBUG "Could not set key %d (len=%d)\n",
407 i, keylen);
408 goto fail;
409 }
410 }
411 if (hostap_set_word(local->dev, HFA384X_RID_CNFWEPDEFAULTKEYID, idx)) {
412 printk(KERN_DEBUG "Could not set default keyid %d\n", idx);
413 goto fail;
414 }
415
416 return 0;
417
418 fail:
419 printk(KERN_DEBUG "%s: encryption setup failed\n", local->dev->name);
420 return -1;
421}
422
423
424int hostap_set_antsel(local_info_t *local)
425{
426 u16 val;
427 int ret = 0;
428
429 if (local->antsel_tx != HOSTAP_ANTSEL_DO_NOT_TOUCH &&
430 local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF,
431 HFA386X_CR_TX_CONFIGURE,
432 NULL, &val) == 0) {
433 val &= ~(BIT(2) | BIT(1));
434 switch (local->antsel_tx) {
435 case HOSTAP_ANTSEL_DIVERSITY:
436 val |= BIT(1);
437 break;
438 case HOSTAP_ANTSEL_LOW:
439 break;
440 case HOSTAP_ANTSEL_HIGH:
441 val |= BIT(2);
442 break;
443 }
444
445 if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF,
446 HFA386X_CR_TX_CONFIGURE, &val, NULL)) {
447 printk(KERN_INFO "%s: setting TX AntSel failed\n",
448 local->dev->name);
449 ret = -1;
450 }
451 }
452
453 if (local->antsel_rx != HOSTAP_ANTSEL_DO_NOT_TOUCH &&
454 local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF,
455 HFA386X_CR_RX_CONFIGURE,
456 NULL, &val) == 0) {
457 val &= ~(BIT(1) | BIT(0));
458 switch (local->antsel_rx) {
459 case HOSTAP_ANTSEL_DIVERSITY:
460 break;
461 case HOSTAP_ANTSEL_LOW:
462 val |= BIT(0);
463 break;
464 case HOSTAP_ANTSEL_HIGH:
465 val |= BIT(0) | BIT(1);
466 break;
467 }
468
469 if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF,
470 HFA386X_CR_RX_CONFIGURE, &val, NULL)) {
471 printk(KERN_INFO "%s: setting RX AntSel failed\n",
472 local->dev->name);
473 ret = -1;
474 }
475 }
476
477 return ret;
478}
479
480
481int hostap_set_roaming(local_info_t *local)
482{
483 u16 val;
484
485 switch (local->host_roaming) {
486 case 1:
487 val = HFA384X_ROAMING_HOST;
488 break;
489 case 2:
490 val = HFA384X_ROAMING_DISABLED;
491 break;
492 case 0:
493 default:
494 val = HFA384X_ROAMING_FIRMWARE;
495 break;
496 }
497
498 return hostap_set_word(local->dev, HFA384X_RID_CNFROAMINGMODE, val);
499}
500
501
502int hostap_set_auth_algs(local_info_t *local)
503{
504 int val = local->auth_algs;
505 /* At least STA f/w v0.6.2 seems to have issues with cnfAuthentication
506 * set to include both Open and Shared Key flags. It tries to use
507 * Shared Key authentication in that case even if WEP keys are not
508 * configured.. STA f/w v0.7.6 is able to handle such configuration,
509 * but it is unknown when this was fixed between 0.6.2 .. 0.7.6. */
510 if (local->sta_fw_ver < PRISM2_FW_VER(0,7,0) &&
511 val != PRISM2_AUTH_OPEN && val != PRISM2_AUTH_SHARED_KEY)
512 val = PRISM2_AUTH_OPEN;
513
514 if (hostap_set_word(local->dev, HFA384X_RID_CNFAUTHENTICATION, val)) {
515 printk(KERN_INFO "%s: cnfAuthentication setting to 0x%x "
516 "failed\n", local->dev->name, local->auth_algs);
517 return -EINVAL;
518 }
519
520 return 0;
521}
522
523
524void hostap_dump_rx_header(const char *name, const struct hfa384x_rx_frame *rx)
525{
526 u16 status, fc;
527
528 status = __le16_to_cpu(rx->status);
529
530 printk(KERN_DEBUG "%s: RX status=0x%04x (port=%d, type=%d, "
531 "fcserr=%d) silence=%d signal=%d rate=%d rxflow=%d; "
532 "jiffies=%ld\n",
533 name, status, (status >> 8) & 0x07, status >> 13, status & 1,
534 rx->silence, rx->signal, rx->rate, rx->rxflow, jiffies);
535
536 fc = __le16_to_cpu(rx->frame_control);
537 printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x "
538 "data_len=%d%s%s\n",
539 fc, (fc & IEEE80211_FCTL_FTYPE) >> 2,
540 (fc & IEEE80211_FCTL_STYPE) >> 4,
541 __le16_to_cpu(rx->duration_id), __le16_to_cpu(rx->seq_ctrl),
542 __le16_to_cpu(rx->data_len),
543 fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
544 fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
545
546 printk(KERN_DEBUG " A1=%pM A2=%pM A3=%pM A4=%pM\n",
547 rx->addr1, rx->addr2, rx->addr3, rx->addr4);
548
549 printk(KERN_DEBUG " dst=%pM src=%pM len=%d\n",
550 rx->dst_addr, rx->src_addr,
551 __be16_to_cpu(rx->len));
552}
553
554
555void hostap_dump_tx_header(const char *name, const struct hfa384x_tx_frame *tx)
556{
557 u16 fc;
558
559 printk(KERN_DEBUG "%s: TX status=0x%04x retry_count=%d tx_rate=%d "
560 "tx_control=0x%04x; jiffies=%ld\n",
561 name, __le16_to_cpu(tx->status), tx->retry_count, tx->tx_rate,
562 __le16_to_cpu(tx->tx_control), jiffies);
563
564 fc = __le16_to_cpu(tx->frame_control);
565 printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x "
566 "data_len=%d%s%s\n",
567 fc, (fc & IEEE80211_FCTL_FTYPE) >> 2,
568 (fc & IEEE80211_FCTL_STYPE) >> 4,
569 __le16_to_cpu(tx->duration_id), __le16_to_cpu(tx->seq_ctrl),
570 __le16_to_cpu(tx->data_len),
571 fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
572 fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
573
574 printk(KERN_DEBUG " A1=%pM A2=%pM A3=%pM A4=%pM\n",
575 tx->addr1, tx->addr2, tx->addr3, tx->addr4);
576
577 printk(KERN_DEBUG " dst=%pM src=%pM len=%d\n",
578 tx->dst_addr, tx->src_addr,
579 __be16_to_cpu(tx->len));
580}
581
582
583static int hostap_80211_header_parse(const struct sk_buff *skb,
584 unsigned char *haddr)
585{
586 memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
587 return ETH_ALEN;
588}
589
590
591int hostap_80211_get_hdrlen(__le16 fc)
592{
593 if (ieee80211_is_data(fc) && ieee80211_has_a4 (fc))
594 return 30; /* Addr4 */
595 else if (ieee80211_is_cts(fc) || ieee80211_is_ack(fc))
596 return 10;
597 else if (ieee80211_is_ctl(fc))
598 return 16;
599
600 return 24;
601}
602
603
604static int prism2_close(struct net_device *dev)
605{
606 struct hostap_interface *iface;
607 local_info_t *local;
608
609 PDEBUG(DEBUG_FLOW, "%s: prism2_close\n", dev->name);
610
611 iface = netdev_priv(dev);
612 local = iface->local;
613
614 if (dev == local->ddev) {
615 prism2_sta_deauth(local, WLAN_REASON_DEAUTH_LEAVING);
616 }
617#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
618 if (!local->hostapd && dev == local->dev &&
619 (!local->func->card_present || local->func->card_present(local)) &&
620 local->hw_ready && local->ap && local->iw_mode == IW_MODE_MASTER)
621 hostap_deauth_all_stas(dev, local->ap, 1);
622#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
623
624 if (dev == local->dev) {
625 local->func->hw_shutdown(dev, HOSTAP_HW_ENABLE_CMDCOMPL);
626 }
627
628 if (netif_running(dev)) {
629 netif_stop_queue(dev);
630 netif_device_detach(dev);
631 }
632
633 cancel_work_sync(&local->reset_queue);
634 cancel_work_sync(&local->set_multicast_list_queue);
635 cancel_work_sync(&local->set_tim_queue);
636#ifndef PRISM2_NO_STATION_MODES
637 cancel_work_sync(&local->info_queue);
638#endif
639 cancel_work_sync(&local->comms_qual_update);
640
641 module_put(local->hw_module);
642
643 local->num_dev_open--;
644
645 if (dev != local->dev && local->dev->flags & IFF_UP &&
646 local->master_dev_auto_open && local->num_dev_open == 1) {
647 /* Close master radio interface automatically if it was also
648 * opened automatically and we are now closing the last
649 * remaining non-master device. */
650 dev_close(local->dev);
651 }
652
653 return 0;
654}
655
656
657static int prism2_open(struct net_device *dev)
658{
659 struct hostap_interface *iface;
660 local_info_t *local;
661
662 PDEBUG(DEBUG_FLOW, "%s: prism2_open\n", dev->name);
663
664 iface = netdev_priv(dev);
665 local = iface->local;
666
667 if (local->no_pri) {
668 printk(KERN_DEBUG "%s: could not set interface UP - no PRI "
669 "f/w\n", dev->name);
670 return 1;
671 }
672
673 if ((local->func->card_present && !local->func->card_present(local)) ||
674 local->hw_downloading)
675 return -ENODEV;
676
677 if (!try_module_get(local->hw_module))
678 return -ENODEV;
679 local->num_dev_open++;
680
681 if (!local->dev_enabled && local->func->hw_enable(dev, 1)) {
682 printk(KERN_WARNING "%s: could not enable MAC port\n",
683 dev->name);
684 prism2_close(dev);
685 return 1;
686 }
687 if (!local->dev_enabled)
688 prism2_callback(local, PRISM2_CALLBACK_ENABLE);
689 local->dev_enabled = 1;
690
691 if (dev != local->dev && !(local->dev->flags & IFF_UP)) {
692 /* Master radio interface is needed for all operation, so open
693 * it automatically when any virtual net_device is opened. */
694 local->master_dev_auto_open = 1;
695 dev_open(local->dev);
696 }
697
698 netif_device_attach(dev);
699 netif_start_queue(dev);
700
701 return 0;
702}
703
704
705static int prism2_set_mac_address(struct net_device *dev, void *p)
706{
707 struct hostap_interface *iface;
708 local_info_t *local;
709 struct list_head *ptr;
710 struct sockaddr *addr = p;
711
712 iface = netdev_priv(dev);
713 local = iface->local;
714
715 if (local->func->set_rid(dev, HFA384X_RID_CNFOWNMACADDR, addr->sa_data,
716 ETH_ALEN) < 0 || local->func->reset_port(dev))
717 return -EINVAL;
718
719 read_lock_bh(&local->iface_lock);
720 list_for_each(ptr, &local->hostap_interfaces) {
721 iface = list_entry(ptr, struct hostap_interface, list);
722 memcpy(iface->dev->dev_addr, addr->sa_data, ETH_ALEN);
723 }
724 memcpy(local->dev->dev_addr, addr->sa_data, ETH_ALEN);
725 read_unlock_bh(&local->iface_lock);
726
727 return 0;
728}
729
730
731/* TODO: to be further implemented as soon as Prism2 fully supports
732 * GroupAddresses and correct documentation is available */
733void hostap_set_multicast_list_queue(struct work_struct *work)
734{
735 local_info_t *local =
736 container_of(work, local_info_t, set_multicast_list_queue);
737 struct net_device *dev = local->dev;
738
739 if (hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
740 local->is_promisc)) {
741 printk(KERN_INFO "%s: %sabling promiscuous mode failed\n",
742 dev->name, local->is_promisc ? "en" : "dis");
743 }
744}
745
746
747static void hostap_set_multicast_list(struct net_device *dev)
748{
749#if 0
750 /* FIX: promiscuous mode seems to be causing a lot of problems with
751 * some station firmware versions (FCSErr frames, invalid MACPort, etc.
752 * corrupted incoming frames). This code is now commented out while the
753 * problems are investigated. */
754 struct hostap_interface *iface;
755 local_info_t *local;
756
757 iface = netdev_priv(dev);
758 local = iface->local;
759 if ((dev->flags & IFF_ALLMULTI) || (dev->flags & IFF_PROMISC)) {
760 local->is_promisc = 1;
761 } else {
762 local->is_promisc = 0;
763 }
764
765 schedule_work(&local->set_multicast_list_queue);
766#endif
767}
768
769
770static int prism2_change_mtu(struct net_device *dev, int new_mtu)
771{
772 if (new_mtu < PRISM2_MIN_MTU || new_mtu > PRISM2_MAX_MTU)
773 return -EINVAL;
774
775 dev->mtu = new_mtu;
776 return 0;
777}
778
779
780static void prism2_tx_timeout(struct net_device *dev)
781{
782 struct hostap_interface *iface;
783 local_info_t *local;
784 struct hfa384x_regs regs;
785
786 iface = netdev_priv(dev);
787 local = iface->local;
788
789 printk(KERN_WARNING "%s Tx timed out! Resetting card\n", dev->name);
790 netif_stop_queue(local->dev);
791
792 local->func->read_regs(dev, ®s);
793 printk(KERN_DEBUG "%s: CMD=%04x EVSTAT=%04x "
794 "OFFSET0=%04x OFFSET1=%04x SWSUPPORT0=%04x\n",
795 dev->name, regs.cmd, regs.evstat, regs.offset0, regs.offset1,
796 regs.swsupport0);
797
798 local->func->schedule_reset(local);
799}
800
801const struct header_ops hostap_80211_ops = {
802 .create = eth_header,
803 .rebuild = eth_rebuild_header,
804 .cache = eth_header_cache,
805 .cache_update = eth_header_cache_update,
806 .parse = hostap_80211_header_parse,
807};
808EXPORT_SYMBOL(hostap_80211_ops);
809
810
811static const struct net_device_ops hostap_netdev_ops = {
812 .ndo_start_xmit = hostap_data_start_xmit,
813
814 .ndo_open = prism2_open,
815 .ndo_stop = prism2_close,
816 .ndo_do_ioctl = hostap_ioctl,
817 .ndo_set_mac_address = prism2_set_mac_address,
818 .ndo_set_rx_mode = hostap_set_multicast_list,
819 .ndo_change_mtu = prism2_change_mtu,
820 .ndo_tx_timeout = prism2_tx_timeout,
821 .ndo_validate_addr = eth_validate_addr,
822};
823
824static const struct net_device_ops hostap_mgmt_netdev_ops = {
825 .ndo_start_xmit = hostap_mgmt_start_xmit,
826
827 .ndo_open = prism2_open,
828 .ndo_stop = prism2_close,
829 .ndo_do_ioctl = hostap_ioctl,
830 .ndo_set_mac_address = prism2_set_mac_address,
831 .ndo_set_rx_mode = hostap_set_multicast_list,
832 .ndo_change_mtu = prism2_change_mtu,
833 .ndo_tx_timeout = prism2_tx_timeout,
834 .ndo_validate_addr = eth_validate_addr,
835};
836
837static const struct net_device_ops hostap_master_ops = {
838 .ndo_start_xmit = hostap_master_start_xmit,
839
840 .ndo_open = prism2_open,
841 .ndo_stop = prism2_close,
842 .ndo_do_ioctl = hostap_ioctl,
843 .ndo_set_mac_address = prism2_set_mac_address,
844 .ndo_set_rx_mode = hostap_set_multicast_list,
845 .ndo_change_mtu = prism2_change_mtu,
846 .ndo_tx_timeout = prism2_tx_timeout,
847 .ndo_validate_addr = eth_validate_addr,
848};
849
850void hostap_setup_dev(struct net_device *dev, local_info_t *local,
851 int type)
852{
853 struct hostap_interface *iface;
854
855 iface = netdev_priv(dev);
856 ether_setup(dev);
857 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
858
859 /* kernel callbacks */
860 if (iface) {
861 /* Currently, we point to the proper spy_data only on
862 * the main_dev. This could be fixed. Jean II */
863 iface->wireless_data.spy_data = &iface->spy_data;
864 dev->wireless_data = &iface->wireless_data;
865 }
866 dev->wireless_handlers = &hostap_iw_handler_def;
867 dev->watchdog_timeo = TX_TIMEOUT;
868
869 switch(type) {
870 case HOSTAP_INTERFACE_AP:
871 dev->tx_queue_len = 0; /* use main radio device queue */
872 dev->netdev_ops = &hostap_mgmt_netdev_ops;
873 dev->type = ARPHRD_IEEE80211;
874 dev->header_ops = &hostap_80211_ops;
875 break;
876 case HOSTAP_INTERFACE_MASTER:
877 dev->netdev_ops = &hostap_master_ops;
878 break;
879 default:
880 dev->tx_queue_len = 0; /* use main radio device queue */
881 dev->netdev_ops = &hostap_netdev_ops;
882 }
883
884 dev->mtu = local->mtu;
885
886
887 SET_ETHTOOL_OPS(dev, &prism2_ethtool_ops);
888
889}
890
891static int hostap_enable_hostapd(local_info_t *local, int rtnl_locked)
892{
893 struct net_device *dev = local->dev;
894
895 if (local->apdev)
896 return -EEXIST;
897
898 printk(KERN_DEBUG "%s: enabling hostapd mode\n", dev->name);
899
900 local->apdev = hostap_add_interface(local, HOSTAP_INTERFACE_AP,
901 rtnl_locked, local->ddev->name,
902 "ap");
903 if (local->apdev == NULL)
904 return -ENOMEM;
905
906 return 0;
907}
908
909
910static int hostap_disable_hostapd(local_info_t *local, int rtnl_locked)
911{
912 struct net_device *dev = local->dev;
913
914 printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name);
915
916 hostap_remove_interface(local->apdev, rtnl_locked, 1);
917 local->apdev = NULL;
918
919 return 0;
920}
921
922
923static int hostap_enable_hostapd_sta(local_info_t *local, int rtnl_locked)
924{
925 struct net_device *dev = local->dev;
926
927 if (local->stadev)
928 return -EEXIST;
929
930 printk(KERN_DEBUG "%s: enabling hostapd STA mode\n", dev->name);
931
932 local->stadev = hostap_add_interface(local, HOSTAP_INTERFACE_STA,
933 rtnl_locked, local->ddev->name,
934 "sta");
935 if (local->stadev == NULL)
936 return -ENOMEM;
937
938 return 0;
939}
940
941
942static int hostap_disable_hostapd_sta(local_info_t *local, int rtnl_locked)
943{
944 struct net_device *dev = local->dev;
945
946 printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name);
947
948 hostap_remove_interface(local->stadev, rtnl_locked, 1);
949 local->stadev = NULL;
950
951 return 0;
952}
953
954
955int hostap_set_hostapd(local_info_t *local, int val, int rtnl_locked)
956{
957 int ret;
958
959 if (val < 0 || val > 1)
960 return -EINVAL;
961
962 if (local->hostapd == val)
963 return 0;
964
965 if (val) {
966 ret = hostap_enable_hostapd(local, rtnl_locked);
967 if (ret == 0)
968 local->hostapd = 1;
969 } else {
970 local->hostapd = 0;
971 ret = hostap_disable_hostapd(local, rtnl_locked);
972 if (ret != 0)
973 local->hostapd = 1;
974 }
975
976 return ret;
977}
978
979
980int hostap_set_hostapd_sta(local_info_t *local, int val, int rtnl_locked)
981{
982 int ret;
983
984 if (val < 0 || val > 1)
985 return -EINVAL;
986
987 if (local->hostapd_sta == val)
988 return 0;
989
990 if (val) {
991 ret = hostap_enable_hostapd_sta(local, rtnl_locked);
992 if (ret == 0)
993 local->hostapd_sta = 1;
994 } else {
995 local->hostapd_sta = 0;
996 ret = hostap_disable_hostapd_sta(local, rtnl_locked);
997 if (ret != 0)
998 local->hostapd_sta = 1;
999 }
1000
1001
1002 return ret;
1003}
1004
1005
1006int prism2_update_comms_qual(struct net_device *dev)
1007{
1008 struct hostap_interface *iface;
1009 local_info_t *local;
1010 int ret = 0;
1011 struct hfa384x_comms_quality sq;
1012
1013 iface = netdev_priv(dev);
1014 local = iface->local;
1015 if (!local->sta_fw_ver)
1016 ret = -1;
1017 else if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1)) {
1018 if (local->func->get_rid(local->dev,
1019 HFA384X_RID_DBMCOMMSQUALITY,
1020 &sq, sizeof(sq), 1) >= 0) {
1021 local->comms_qual = (s16) le16_to_cpu(sq.comm_qual);
1022 local->avg_signal = (s16) le16_to_cpu(sq.signal_level);
1023 local->avg_noise = (s16) le16_to_cpu(sq.noise_level);
1024 local->last_comms_qual_update = jiffies;
1025 } else
1026 ret = -1;
1027 } else {
1028 if (local->func->get_rid(local->dev, HFA384X_RID_COMMSQUALITY,
1029 &sq, sizeof(sq), 1) >= 0) {
1030 local->comms_qual = le16_to_cpu(sq.comm_qual);
1031 local->avg_signal = HFA384X_LEVEL_TO_dBm(
1032 le16_to_cpu(sq.signal_level));
1033 local->avg_noise = HFA384X_LEVEL_TO_dBm(
1034 le16_to_cpu(sq.noise_level));
1035 local->last_comms_qual_update = jiffies;
1036 } else
1037 ret = -1;
1038 }
1039
1040 return ret;
1041}
1042
1043
1044int prism2_sta_send_mgmt(local_info_t *local, u8 *dst, u16 stype,
1045 u8 *body, size_t bodylen)
1046{
1047 struct sk_buff *skb;
1048 struct hostap_ieee80211_mgmt *mgmt;
1049 struct hostap_skb_tx_data *meta;
1050 struct net_device *dev = local->dev;
1051
1052 skb = dev_alloc_skb(IEEE80211_MGMT_HDR_LEN + bodylen);
1053 if (skb == NULL)
1054 return -ENOMEM;
1055
1056 mgmt = (struct hostap_ieee80211_mgmt *)
1057 skb_put(skb, IEEE80211_MGMT_HDR_LEN);
1058 memset(mgmt, 0, IEEE80211_MGMT_HDR_LEN);
1059 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1060 memcpy(mgmt->da, dst, ETH_ALEN);
1061 memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
1062 memcpy(mgmt->bssid, dst, ETH_ALEN);
1063 if (body)
1064 memcpy(skb_put(skb, bodylen), body, bodylen);
1065
1066 meta = (struct hostap_skb_tx_data *) skb->cb;
1067 memset(meta, 0, sizeof(*meta));
1068 meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
1069 meta->iface = netdev_priv(dev);
1070
1071 skb->dev = dev;
1072 skb_reset_mac_header(skb);
1073 skb_reset_network_header(skb);
1074 dev_queue_xmit(skb);
1075
1076 return 0;
1077}
1078
1079
1080int prism2_sta_deauth(local_info_t *local, u16 reason)
1081{
1082 union iwreq_data wrqu;
1083 int ret;
1084 __le16 val = cpu_to_le16(reason);
1085
1086 if (local->iw_mode != IW_MODE_INFRA ||
1087 memcmp(local->bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0 ||
1088 memcmp(local->bssid, "\x44\x44\x44\x44\x44\x44", ETH_ALEN) == 0)
1089 return 0;
1090
1091 ret = prism2_sta_send_mgmt(local, local->bssid, IEEE80211_STYPE_DEAUTH,
1092 (u8 *) &val, 2);
1093 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1094 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
1095 return ret;
1096}
1097
1098
1099struct proc_dir_entry *hostap_proc;
1100
1101static int __init hostap_init(void)
1102{
1103 if (init_net.proc_net != NULL) {
1104 hostap_proc = proc_mkdir("hostap", init_net.proc_net);
1105 if (!hostap_proc)
1106 printk(KERN_WARNING "Failed to mkdir "
1107 "/proc/net/hostap\n");
1108 } else
1109 hostap_proc = NULL;
1110
1111 return 0;
1112}
1113
1114
1115static void __exit hostap_exit(void)
1116{
1117 if (hostap_proc != NULL) {
1118 hostap_proc = NULL;
1119 remove_proc_entry("hostap", init_net.proc_net);
1120 }
1121}
1122
1123
1124EXPORT_SYMBOL(hostap_set_word);
1125EXPORT_SYMBOL(hostap_set_string);
1126EXPORT_SYMBOL(hostap_get_porttype);
1127EXPORT_SYMBOL(hostap_set_encryption);
1128EXPORT_SYMBOL(hostap_set_antsel);
1129EXPORT_SYMBOL(hostap_set_roaming);
1130EXPORT_SYMBOL(hostap_set_auth_algs);
1131EXPORT_SYMBOL(hostap_dump_rx_header);
1132EXPORT_SYMBOL(hostap_dump_tx_header);
1133EXPORT_SYMBOL(hostap_80211_get_hdrlen);
1134EXPORT_SYMBOL(hostap_setup_dev);
1135EXPORT_SYMBOL(hostap_set_multicast_list_queue);
1136EXPORT_SYMBOL(hostap_set_hostapd);
1137EXPORT_SYMBOL(hostap_set_hostapd_sta);
1138EXPORT_SYMBOL(hostap_add_interface);
1139EXPORT_SYMBOL(hostap_remove_interface);
1140EXPORT_SYMBOL(prism2_update_comms_qual);
1141
1142module_init(hostap_init);
1143module_exit(hostap_exit);