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path: root/drivers/net/wireless/hostap/hostap_main.c
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Diffstat (limited to 'drivers/net/wireless/hostap/hostap_main.c')
-rw-r--r--drivers/net/wireless/hostap/hostap_main.c1191
1 files changed, 1191 insertions, 0 deletions
diff --git a/drivers/net/wireless/hostap/hostap_main.c b/drivers/net/wireless/hostap/hostap_main.c
new file mode 100644
index 000000000000..3d2ea61033be
--- /dev/null
+++ b/drivers/net/wireless/hostap/hostap_main.c
@@ -0,0 +1,1191 @@
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 * <jkmaline@cc.hut.fi>
7 * Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.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/config.h>
16#include <linux/module.h>
17#include <linux/init.h>
18#include <linux/slab.h>
19#include <linux/proc_fs.h>
20#include <linux/if_arp.h>
21#include <linux/delay.h>
22#include <linux/random.h>
23#include <linux/workqueue.h>
24#include <linux/kmod.h>
25#include <linux/rtnetlink.h>
26#include <linux/wireless.h>
27#include <net/iw_handler.h>
28#include <net/ieee80211.h>
29#include <net/ieee80211_crypt.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");
40MODULE_VERSION(PRISM2_VERSION);
41
42#define TX_TIMEOUT (2 * HZ)
43
44#define PRISM2_MAX_FRAME_SIZE 2304
45#define PRISM2_MIN_MTU 256
46/* FIX: */
47#define PRISM2_MAX_MTU (PRISM2_MAX_FRAME_SIZE - (6 /* LLC */ + 8 /* WEP */))
48
49
50/* hostap.c */
51static int prism2_wds_add(local_info_t *local, u8 *remote_addr,
52 int rtnl_locked);
53static int prism2_wds_del(local_info_t *local, u8 *remote_addr,
54 int rtnl_locked, int do_not_remove);
55
56/* hostap_ap.c */
57static int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[],
58 struct iw_quality qual[], int buf_size,
59 int aplist);
60static int prism2_ap_translate_scan(struct net_device *dev, char *buffer);
61static int prism2_hostapd(struct ap_data *ap,
62 struct prism2_hostapd_param *param);
63static void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent,
64 struct ieee80211_crypt_data ***crypt);
65static void ap_control_kickall(struct ap_data *ap);
66#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
67static int ap_control_add_mac(struct mac_restrictions *mac_restrictions,
68 u8 *mac);
69static int ap_control_del_mac(struct mac_restrictions *mac_restrictions,
70 u8 *mac);
71static void ap_control_flush_macs(struct mac_restrictions *mac_restrictions);
72static int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev,
73 u8 *mac);
74#endif /* !PRISM2_NO_KERNEL_IEEE80211_MGMT */
75
76
77static const long freq_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
78 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
79#define FREQ_COUNT (sizeof(freq_list) / sizeof(freq_list[0]))
80
81
82/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
83/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
84static unsigned char rfc1042_header[] =
85{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
86/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
87static unsigned char bridge_tunnel_header[] =
88{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
89/* No encapsulation header if EtherType < 0x600 (=length) */
90
91
92/* FIX: these could be compiled separately and linked together to hostap.o */
93#include "hostap_ap.c"
94#include "hostap_info.c"
95#include "hostap_ioctl.c"
96#include "hostap_proc.c"
97#include "hostap_80211_rx.c"
98#include "hostap_80211_tx.c"
99
100
101struct net_device * hostap_add_interface(struct local_info *local,
102 int type, int rtnl_locked,
103 const char *prefix,
104 const char *name)
105{
106 struct net_device *dev, *mdev;
107 struct hostap_interface *iface;
108 int ret;
109
110 dev = alloc_etherdev(sizeof(struct hostap_interface));
111 if (dev == NULL)
112 return NULL;
113
114 iface = netdev_priv(dev);
115 iface->dev = dev;
116 iface->local = local;
117 iface->type = type;
118 list_add(&iface->list, &local->hostap_interfaces);
119
120 mdev = local->dev;
121 memcpy(dev->dev_addr, mdev->dev_addr, ETH_ALEN);
122 dev->base_addr = mdev->base_addr;
123 dev->irq = mdev->irq;
124 dev->mem_start = mdev->mem_start;
125 dev->mem_end = mdev->mem_end;
126
127 hostap_setup_dev(dev, local, 0);
128 dev->destructor = free_netdev;
129
130 sprintf(dev->name, "%s%s", prefix, name);
131 if (!rtnl_locked)
132 rtnl_lock();
133
134 ret = 0;
135 if (strchr(dev->name, '%'))
136 ret = dev_alloc_name(dev, dev->name);
137
138 SET_NETDEV_DEV(dev, mdev->class_dev.dev);
139 if (ret >= 0)
140 ret = register_netdevice(dev);
141
142 if (!rtnl_locked)
143 rtnl_unlock();
144
145 if (ret < 0) {
146 printk(KERN_WARNING "%s: failed to add new netdevice!\n",
147 dev->name);
148 free_netdev(dev);
149 return NULL;
150 }
151
152 printk(KERN_DEBUG "%s: registered netdevice %s\n",
153 mdev->name, dev->name);
154
155 return dev;
156}
157
158
159void hostap_remove_interface(struct net_device *dev, int rtnl_locked,
160 int remove_from_list)
161{
162 struct hostap_interface *iface;
163
164 if (!dev)
165 return;
166
167 iface = netdev_priv(dev);
168
169 if (remove_from_list) {
170 list_del(&iface->list);
171 }
172
173 if (dev == iface->local->ddev)
174 iface->local->ddev = NULL;
175 else if (dev == iface->local->apdev)
176 iface->local->apdev = NULL;
177 else if (dev == iface->local->stadev)
178 iface->local->stadev = NULL;
179
180 if (rtnl_locked)
181 unregister_netdevice(dev);
182 else
183 unregister_netdev(dev);
184
185 /* dev->destructor = free_netdev() will free the device data, including
186 * private data, when removing the device */
187}
188
189
190static inline int prism2_wds_special_addr(u8 *addr)
191{
192 if (addr[0] || addr[1] || addr[2] || addr[3] || addr[4] || addr[5])
193 return 0;
194
195 return 1;
196}
197
198
199static int prism2_wds_add(local_info_t *local, u8 *remote_addr,
200 int rtnl_locked)
201{
202 struct net_device *dev;
203 struct list_head *ptr;
204 struct hostap_interface *iface, *empty, *match;
205
206 empty = match = NULL;
207 read_lock_bh(&local->iface_lock);
208 list_for_each(ptr, &local->hostap_interfaces) {
209 iface = list_entry(ptr, struct hostap_interface, list);
210 if (iface->type != HOSTAP_INTERFACE_WDS)
211 continue;
212
213 if (prism2_wds_special_addr(iface->u.wds.remote_addr))
214 empty = iface;
215 else if (memcmp(iface->u.wds.remote_addr, remote_addr,
216 ETH_ALEN) == 0) {
217 match = iface;
218 break;
219 }
220 }
221 if (!match && empty && !prism2_wds_special_addr(remote_addr)) {
222 /* take pre-allocated entry into use */
223 memcpy(empty->u.wds.remote_addr, remote_addr, ETH_ALEN);
224 read_unlock_bh(&local->iface_lock);
225 printk(KERN_DEBUG "%s: using pre-allocated WDS netdevice %s\n",
226 local->dev->name, empty->dev->name);
227 return 0;
228 }
229 read_unlock_bh(&local->iface_lock);
230
231 if (!prism2_wds_special_addr(remote_addr)) {
232 if (match)
233 return -EEXIST;
234 hostap_add_sta(local->ap, remote_addr);
235 }
236
237 if (local->wds_connections >= local->wds_max_connections)
238 return -ENOBUFS;
239
240 /* verify that there is room for wds# postfix in the interface name */
241 if (strlen(local->dev->name) > IFNAMSIZ - 5) {
242 printk(KERN_DEBUG "'%s' too long base device name\n",
243 local->dev->name);
244 return -EINVAL;
245 }
246
247 dev = hostap_add_interface(local, HOSTAP_INTERFACE_WDS, rtnl_locked,
248 local->ddev->name, "wds%d");
249 if (dev == NULL)
250 return -ENOMEM;
251
252 iface = netdev_priv(dev);
253 memcpy(iface->u.wds.remote_addr, remote_addr, ETH_ALEN);
254
255 local->wds_connections++;
256
257 return 0;
258}
259
260
261static int prism2_wds_del(local_info_t *local, u8 *remote_addr,
262 int rtnl_locked, int do_not_remove)
263{
264 unsigned long flags;
265 struct list_head *ptr;
266 struct hostap_interface *iface, *selected = NULL;
267
268 write_lock_irqsave(&local->iface_lock, flags);
269 list_for_each(ptr, &local->hostap_interfaces) {
270 iface = list_entry(ptr, struct hostap_interface, list);
271 if (iface->type != HOSTAP_INTERFACE_WDS)
272 continue;
273
274 if (memcmp(iface->u.wds.remote_addr, remote_addr,
275 ETH_ALEN) == 0) {
276 selected = iface;
277 break;
278 }
279 }
280 if (selected && !do_not_remove)
281 list_del(&selected->list);
282 write_unlock_irqrestore(&local->iface_lock, flags);
283
284 if (selected) {
285 if (do_not_remove)
286 memset(selected->u.wds.remote_addr, 0, ETH_ALEN);
287 else {
288 hostap_remove_interface(selected->dev, rtnl_locked, 0);
289 local->wds_connections--;
290 }
291 }
292
293 return selected ? 0 : -ENODEV;
294}
295
296
297u16 hostap_tx_callback_register(local_info_t *local,
298 void (*func)(struct sk_buff *, int ok, void *),
299 void *data)
300{
301 unsigned long flags;
302 struct hostap_tx_callback_info *entry;
303
304 entry = (struct hostap_tx_callback_info *) kmalloc(sizeof(*entry),
305 GFP_ATOMIC);
306 if (entry == NULL)
307 return 0;
308
309 entry->func = func;
310 entry->data = data;
311
312 spin_lock_irqsave(&local->lock, flags);
313 entry->idx = local->tx_callback ? local->tx_callback->idx + 1 : 1;
314 entry->next = local->tx_callback;
315 local->tx_callback = entry;
316 spin_unlock_irqrestore(&local->lock, flags);
317
318 return entry->idx;
319}
320
321
322int hostap_tx_callback_unregister(local_info_t *local, u16 idx)
323{
324 unsigned long flags;
325 struct hostap_tx_callback_info *cb, *prev = NULL;
326
327 spin_lock_irqsave(&local->lock, flags);
328 cb = local->tx_callback;
329 while (cb != NULL && cb->idx != idx) {
330 prev = cb;
331 cb = cb->next;
332 }
333 if (cb) {
334 if (prev == NULL)
335 local->tx_callback = cb->next;
336 else
337 prev->next = cb->next;
338 kfree(cb);
339 }
340 spin_unlock_irqrestore(&local->lock, flags);
341
342 return cb ? 0 : -1;
343}
344
345
346/* val is in host byte order */
347int hostap_set_word(struct net_device *dev, int rid, u16 val)
348{
349 struct hostap_interface *iface;
350 u16 tmp = cpu_to_le16(val);
351 iface = netdev_priv(dev);
352 return iface->local->func->set_rid(dev, rid, &tmp, 2);
353}
354
355
356int hostap_set_string(struct net_device *dev, int rid, const char *val)
357{
358 struct hostap_interface *iface;
359 char buf[MAX_SSID_LEN + 2];
360 int len;
361
362 iface = netdev_priv(dev);
363 len = strlen(val);
364 if (len > MAX_SSID_LEN)
365 return -1;
366 memset(buf, 0, sizeof(buf));
367 buf[0] = len; /* little endian 16 bit word */
368 memcpy(buf + 2, val, len);
369
370 return iface->local->func->set_rid(dev, rid, &buf, MAX_SSID_LEN + 2);
371}
372
373
374u16 hostap_get_porttype(local_info_t *local)
375{
376 if (local->iw_mode == IW_MODE_ADHOC && local->pseudo_adhoc)
377 return HFA384X_PORTTYPE_PSEUDO_IBSS;
378 if (local->iw_mode == IW_MODE_ADHOC)
379 return HFA384X_PORTTYPE_IBSS;
380 if (local->iw_mode == IW_MODE_INFRA)
381 return HFA384X_PORTTYPE_BSS;
382 if (local->iw_mode == IW_MODE_REPEAT)
383 return HFA384X_PORTTYPE_WDS;
384 if (local->iw_mode == IW_MODE_MONITOR)
385 return HFA384X_PORTTYPE_PSEUDO_IBSS;
386 return HFA384X_PORTTYPE_HOSTAP;
387}
388
389
390int hostap_set_encryption(local_info_t *local)
391{
392 u16 val, old_val;
393 int i, keylen, len, idx;
394 char keybuf[WEP_KEY_LEN + 1];
395 enum { NONE, WEP, OTHER } encrypt_type;
396
397 idx = local->tx_keyidx;
398 if (local->crypt[idx] == NULL || local->crypt[idx]->ops == NULL)
399 encrypt_type = NONE;
400 else if (strcmp(local->crypt[idx]->ops->name, "WEP") == 0)
401 encrypt_type = WEP;
402 else
403 encrypt_type = OTHER;
404
405 if (local->func->get_rid(local->dev, HFA384X_RID_CNFWEPFLAGS, &val, 2,
406 1) < 0) {
407 printk(KERN_DEBUG "Could not read current WEP flags.\n");
408 goto fail;
409 }
410 le16_to_cpus(&val);
411 old_val = val;
412
413 if (encrypt_type != NONE || local->privacy_invoked)
414 val |= HFA384X_WEPFLAGS_PRIVACYINVOKED;
415 else
416 val &= ~HFA384X_WEPFLAGS_PRIVACYINVOKED;
417
418 if (local->open_wep || encrypt_type == NONE ||
419 ((local->ieee_802_1x || local->wpa) && local->host_decrypt))
420 val &= ~HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED;
421 else
422 val |= HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED;
423
424 if ((encrypt_type != NONE || local->privacy_invoked) &&
425 (encrypt_type == OTHER || local->host_encrypt))
426 val |= HFA384X_WEPFLAGS_HOSTENCRYPT;
427 else
428 val &= ~HFA384X_WEPFLAGS_HOSTENCRYPT;
429 if ((encrypt_type != NONE || local->privacy_invoked) &&
430 (encrypt_type == OTHER || local->host_decrypt))
431 val |= HFA384X_WEPFLAGS_HOSTDECRYPT;
432 else
433 val &= ~HFA384X_WEPFLAGS_HOSTDECRYPT;
434
435 if (val != old_val &&
436 hostap_set_word(local->dev, HFA384X_RID_CNFWEPFLAGS, val)) {
437 printk(KERN_DEBUG "Could not write new WEP flags (0x%x)\n",
438 val);
439 goto fail;
440 }
441
442 if (encrypt_type != WEP)
443 return 0;
444
445 /* 104-bit support seems to require that all the keys are set to the
446 * same keylen */
447 keylen = 6; /* first 5 octets */
448 len = local->crypt[idx]->ops->get_key(keybuf, sizeof(keybuf),
449 NULL, local->crypt[idx]->priv);
450 if (idx >= 0 && idx < WEP_KEYS && len > 5)
451 keylen = WEP_KEY_LEN + 1; /* first 13 octets */
452
453 for (i = 0; i < WEP_KEYS; i++) {
454 memset(keybuf, 0, sizeof(keybuf));
455 if (local->crypt[i]) {
456 (void) local->crypt[i]->ops->get_key(
457 keybuf, sizeof(keybuf),
458 NULL, local->crypt[i]->priv);
459 }
460 if (local->func->set_rid(local->dev,
461 HFA384X_RID_CNFDEFAULTKEY0 + i,
462 keybuf, keylen)) {
463 printk(KERN_DEBUG "Could not set key %d (len=%d)\n",
464 i, keylen);
465 goto fail;
466 }
467 }
468 if (hostap_set_word(local->dev, HFA384X_RID_CNFWEPDEFAULTKEYID, idx)) {
469 printk(KERN_DEBUG "Could not set default keyid %d\n", idx);
470 goto fail;
471 }
472
473 return 0;
474
475 fail:
476 printk(KERN_DEBUG "%s: encryption setup failed\n", local->dev->name);
477 return -1;
478}
479
480
481int hostap_set_antsel(local_info_t *local)
482{
483 u16 val;
484 int ret = 0;
485
486 if (local->antsel_tx != HOSTAP_ANTSEL_DO_NOT_TOUCH &&
487 local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF,
488 HFA386X_CR_TX_CONFIGURE,
489 NULL, &val) == 0) {
490 val &= ~(BIT(2) | BIT(1));
491 switch (local->antsel_tx) {
492 case HOSTAP_ANTSEL_DIVERSITY:
493 val |= BIT(1);
494 break;
495 case HOSTAP_ANTSEL_LOW:
496 break;
497 case HOSTAP_ANTSEL_HIGH:
498 val |= BIT(2);
499 break;
500 }
501
502 if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF,
503 HFA386X_CR_TX_CONFIGURE, &val, NULL)) {
504 printk(KERN_INFO "%s: setting TX AntSel failed\n",
505 local->dev->name);
506 ret = -1;
507 }
508 }
509
510 if (local->antsel_rx != HOSTAP_ANTSEL_DO_NOT_TOUCH &&
511 local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF,
512 HFA386X_CR_RX_CONFIGURE,
513 NULL, &val) == 0) {
514 val &= ~(BIT(1) | BIT(0));
515 switch (local->antsel_rx) {
516 case HOSTAP_ANTSEL_DIVERSITY:
517 break;
518 case HOSTAP_ANTSEL_LOW:
519 val |= BIT(0);
520 break;
521 case HOSTAP_ANTSEL_HIGH:
522 val |= BIT(0) | BIT(1);
523 break;
524 }
525
526 if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF,
527 HFA386X_CR_RX_CONFIGURE, &val, NULL)) {
528 printk(KERN_INFO "%s: setting RX AntSel failed\n",
529 local->dev->name);
530 ret = -1;
531 }
532 }
533
534 return ret;
535}
536
537
538int hostap_set_roaming(local_info_t *local)
539{
540 u16 val;
541
542 switch (local->host_roaming) {
543 case 1:
544 val = HFA384X_ROAMING_HOST;
545 break;
546 case 2:
547 val = HFA384X_ROAMING_DISABLED;
548 break;
549 case 0:
550 default:
551 val = HFA384X_ROAMING_FIRMWARE;
552 break;
553 }
554
555 return hostap_set_word(local->dev, HFA384X_RID_CNFROAMINGMODE, val);
556}
557
558
559int hostap_set_auth_algs(local_info_t *local)
560{
561 int val = local->auth_algs;
562 /* At least STA f/w v0.6.2 seems to have issues with cnfAuthentication
563 * set to include both Open and Shared Key flags. It tries to use
564 * Shared Key authentication in that case even if WEP keys are not
565 * configured.. STA f/w v0.7.6 is able to handle such configuration,
566 * but it is unknown when this was fixed between 0.6.2 .. 0.7.6. */
567 if (local->sta_fw_ver < PRISM2_FW_VER(0,7,0) &&
568 val != PRISM2_AUTH_OPEN && val != PRISM2_AUTH_SHARED_KEY)
569 val = PRISM2_AUTH_OPEN;
570
571 if (hostap_set_word(local->dev, HFA384X_RID_CNFAUTHENTICATION, val)) {
572 printk(KERN_INFO "%s: cnfAuthentication setting to 0x%x "
573 "failed\n", local->dev->name, local->auth_algs);
574 return -EINVAL;
575 }
576
577 return 0;
578}
579
580
581void hostap_dump_rx_header(const char *name, const struct hfa384x_rx_frame *rx)
582{
583 u16 status, fc;
584
585 status = __le16_to_cpu(rx->status);
586
587 printk(KERN_DEBUG "%s: RX status=0x%04x (port=%d, type=%d, "
588 "fcserr=%d) silence=%d signal=%d rate=%d rxflow=%d; "
589 "jiffies=%ld\n",
590 name, status, (status >> 8) & 0x07, status >> 13, status & 1,
591 rx->silence, rx->signal, rx->rate, rx->rxflow, jiffies);
592
593 fc = __le16_to_cpu(rx->frame_control);
594 printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x "
595 "data_len=%d%s%s\n",
596 fc, WLAN_FC_GET_TYPE(fc) >> 2, WLAN_FC_GET_STYPE(fc) >> 4,
597 __le16_to_cpu(rx->duration_id), __le16_to_cpu(rx->seq_ctrl),
598 __le16_to_cpu(rx->data_len),
599 fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
600 fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
601
602 printk(KERN_DEBUG " A1=" MACSTR " A2=" MACSTR " A3=" MACSTR " A4="
603 MACSTR "\n",
604 MAC2STR(rx->addr1), MAC2STR(rx->addr2), MAC2STR(rx->addr3),
605 MAC2STR(rx->addr4));
606
607 printk(KERN_DEBUG " dst=" MACSTR " src=" MACSTR " len=%d\n",
608 MAC2STR(rx->dst_addr), MAC2STR(rx->src_addr),
609 __be16_to_cpu(rx->len));
610}
611
612
613void hostap_dump_tx_header(const char *name, const struct hfa384x_tx_frame *tx)
614{
615 u16 fc;
616
617 printk(KERN_DEBUG "%s: TX status=0x%04x retry_count=%d tx_rate=%d "
618 "tx_control=0x%04x; jiffies=%ld\n",
619 name, __le16_to_cpu(tx->status), tx->retry_count, tx->tx_rate,
620 __le16_to_cpu(tx->tx_control), jiffies);
621
622 fc = __le16_to_cpu(tx->frame_control);
623 printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x "
624 "data_len=%d%s%s\n",
625 fc, WLAN_FC_GET_TYPE(fc) >> 2, WLAN_FC_GET_STYPE(fc) >> 4,
626 __le16_to_cpu(tx->duration_id), __le16_to_cpu(tx->seq_ctrl),
627 __le16_to_cpu(tx->data_len),
628 fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
629 fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
630
631 printk(KERN_DEBUG " A1=" MACSTR " A2=" MACSTR " A3=" MACSTR " A4="
632 MACSTR "\n",
633 MAC2STR(tx->addr1), MAC2STR(tx->addr2), MAC2STR(tx->addr3),
634 MAC2STR(tx->addr4));
635
636 printk(KERN_DEBUG " dst=" MACSTR " src=" MACSTR " len=%d\n",
637 MAC2STR(tx->dst_addr), MAC2STR(tx->src_addr),
638 __be16_to_cpu(tx->len));
639}
640
641
642int hostap_80211_header_parse(struct sk_buff *skb, unsigned char *haddr)
643{
644 memcpy(haddr, skb->mac.raw + 10, ETH_ALEN); /* addr2 */
645 return ETH_ALEN;
646}
647
648
649int hostap_80211_prism_header_parse(struct sk_buff *skb, unsigned char *haddr)
650{
651 if (*(u32 *)skb->mac.raw == LWNG_CAP_DID_BASE) {
652 memcpy(haddr, skb->mac.raw +
653 sizeof(struct linux_wlan_ng_prism_hdr) + 10,
654 ETH_ALEN); /* addr2 */
655 } else { /* (*(u32 *)skb->mac.raw == htonl(LWNG_CAPHDR_VERSION)) */
656 memcpy(haddr, skb->mac.raw +
657 sizeof(struct linux_wlan_ng_cap_hdr) + 10,
658 ETH_ALEN); /* addr2 */
659 }
660 return ETH_ALEN;
661}
662
663
664int hostap_80211_get_hdrlen(u16 fc)
665{
666 int hdrlen = 24;
667
668 switch (WLAN_FC_GET_TYPE(fc)) {
669 case IEEE80211_FTYPE_DATA:
670 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
671 hdrlen = 30; /* Addr4 */
672 break;
673 case IEEE80211_FTYPE_CTL:
674 switch (WLAN_FC_GET_STYPE(fc)) {
675 case IEEE80211_STYPE_CTS:
676 case IEEE80211_STYPE_ACK:
677 hdrlen = 10;
678 break;
679 default:
680 hdrlen = 16;
681 break;
682 }
683 break;
684 }
685
686 return hdrlen;
687}
688
689
690struct net_device_stats *hostap_get_stats(struct net_device *dev)
691{
692 struct hostap_interface *iface;
693 iface = netdev_priv(dev);
694 return &iface->stats;
695}
696
697
698static int prism2_close(struct net_device *dev)
699{
700 struct hostap_interface *iface;
701 local_info_t *local;
702
703 PDEBUG(DEBUG_FLOW, "%s: prism2_close\n", dev->name);
704
705 iface = netdev_priv(dev);
706 local = iface->local;
707
708 if (dev == local->ddev) {
709 prism2_sta_deauth(local, WLAN_REASON_DEAUTH_LEAVING);
710 }
711#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
712 if (!local->hostapd && dev == local->dev &&
713 (!local->func->card_present || local->func->card_present(local)) &&
714 local->hw_ready && local->ap && local->iw_mode == IW_MODE_MASTER)
715 hostap_deauth_all_stas(dev, local->ap, 1);
716#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
717
718 if (dev == local->dev) {
719 local->func->hw_shutdown(dev, HOSTAP_HW_ENABLE_CMDCOMPL);
720 }
721
722 if (netif_running(dev)) {
723 netif_stop_queue(dev);
724 netif_device_detach(dev);
725 }
726
727 flush_scheduled_work();
728
729 module_put(local->hw_module);
730
731 local->num_dev_open--;
732
733 if (dev != local->dev && local->dev->flags & IFF_UP &&
734 local->master_dev_auto_open && local->num_dev_open == 1) {
735 /* Close master radio interface automatically if it was also
736 * opened automatically and we are now closing the last
737 * remaining non-master device. */
738 dev_close(local->dev);
739 }
740
741 return 0;
742}
743
744
745static int prism2_open(struct net_device *dev)
746{
747 struct hostap_interface *iface;
748 local_info_t *local;
749
750 PDEBUG(DEBUG_FLOW, "%s: prism2_open\n", dev->name);
751
752 iface = netdev_priv(dev);
753 local = iface->local;
754
755 if (local->no_pri) {
756 printk(KERN_DEBUG "%s: could not set interface UP - no PRI "
757 "f/w\n", dev->name);
758 return 1;
759 }
760
761 if ((local->func->card_present && !local->func->card_present(local)) ||
762 local->hw_downloading)
763 return -ENODEV;
764
765 if (!try_module_get(local->hw_module))
766 return -ENODEV;
767 local->num_dev_open++;
768
769 if (!local->dev_enabled && local->func->hw_enable(dev, 1)) {
770 printk(KERN_WARNING "%s: could not enable MAC port\n",
771 dev->name);
772 prism2_close(dev);
773 return 1;
774 }
775 if (!local->dev_enabled)
776 prism2_callback(local, PRISM2_CALLBACK_ENABLE);
777 local->dev_enabled = 1;
778
779 if (dev != local->dev && !(local->dev->flags & IFF_UP)) {
780 /* Master radio interface is needed for all operation, so open
781 * it automatically when any virtual net_device is opened. */
782 local->master_dev_auto_open = 1;
783 dev_open(local->dev);
784 }
785
786 netif_device_attach(dev);
787 netif_start_queue(dev);
788
789 return 0;
790}
791
792
793static int prism2_set_mac_address(struct net_device *dev, void *p)
794{
795 struct hostap_interface *iface;
796 local_info_t *local;
797 struct list_head *ptr;
798 struct sockaddr *addr = p;
799
800 iface = netdev_priv(dev);
801 local = iface->local;
802
803 if (local->func->set_rid(dev, HFA384X_RID_CNFOWNMACADDR, addr->sa_data,
804 ETH_ALEN) < 0 || local->func->reset_port(dev))
805 return -EINVAL;
806
807 read_lock_bh(&local->iface_lock);
808 list_for_each(ptr, &local->hostap_interfaces) {
809 iface = list_entry(ptr, struct hostap_interface, list);
810 memcpy(iface->dev->dev_addr, addr->sa_data, ETH_ALEN);
811 }
812 memcpy(local->dev->dev_addr, addr->sa_data, ETH_ALEN);
813 read_unlock_bh(&local->iface_lock);
814
815 return 0;
816}
817
818
819/* TODO: to be further implemented as soon as Prism2 fully supports
820 * GroupAddresses and correct documentation is available */
821void hostap_set_multicast_list_queue(void *data)
822{
823 struct net_device *dev = (struct net_device *) data;
824 struct hostap_interface *iface;
825 local_info_t *local;
826
827 iface = netdev_priv(dev);
828 local = iface->local;
829 if (hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
830 local->is_promisc)) {
831 printk(KERN_INFO "%s: %sabling promiscuous mode failed\n",
832 dev->name, local->is_promisc ? "en" : "dis");
833 }
834}
835
836
837static void hostap_set_multicast_list(struct net_device *dev)
838{
839#if 0
840 /* FIX: promiscuous mode seems to be causing a lot of problems with
841 * some station firmware versions (FCSErr frames, invalid MACPort, etc.
842 * corrupted incoming frames). This code is now commented out while the
843 * problems are investigated. */
844 struct hostap_interface *iface;
845 local_info_t *local;
846
847 iface = netdev_priv(dev);
848 local = iface->local;
849 if ((dev->flags & IFF_ALLMULTI) || (dev->flags & IFF_PROMISC)) {
850 local->is_promisc = 1;
851 } else {
852 local->is_promisc = 0;
853 }
854
855 schedule_work(&local->set_multicast_list_queue);
856#endif
857}
858
859
860static int prism2_change_mtu(struct net_device *dev, int new_mtu)
861{
862 if (new_mtu < PRISM2_MIN_MTU || new_mtu > PRISM2_MAX_MTU)
863 return -EINVAL;
864
865 dev->mtu = new_mtu;
866 return 0;
867}
868
869
870static void prism2_tx_timeout(struct net_device *dev)
871{
872 struct hostap_interface *iface;
873 local_info_t *local;
874 struct hfa384x_regs regs;
875
876 iface = netdev_priv(dev);
877 local = iface->local;
878
879 printk(KERN_WARNING "%s Tx timed out! Resetting card\n", dev->name);
880 netif_stop_queue(local->dev);
881
882 local->func->read_regs(dev, &regs);
883 printk(KERN_DEBUG "%s: CMD=%04x EVSTAT=%04x "
884 "OFFSET0=%04x OFFSET1=%04x SWSUPPORT0=%04x\n",
885 dev->name, regs.cmd, regs.evstat, regs.offset0, regs.offset1,
886 regs.swsupport0);
887
888 local->func->schedule_reset(local);
889}
890
891
892void hostap_setup_dev(struct net_device *dev, local_info_t *local,
893 int main_dev)
894{
895 struct hostap_interface *iface;
896
897 iface = netdev_priv(dev);
898 ether_setup(dev);
899
900 /* kernel callbacks */
901 dev->get_stats = hostap_get_stats;
902 if (iface) {
903 /* Currently, we point to the proper spy_data only on
904 * the main_dev. This could be fixed. Jean II */
905 iface->wireless_data.spy_data = &iface->spy_data;
906 dev->wireless_data = &iface->wireless_data;
907 }
908 dev->wireless_handlers =
909 (struct iw_handler_def *) &hostap_iw_handler_def;
910 dev->do_ioctl = hostap_ioctl;
911 dev->open = prism2_open;
912 dev->stop = prism2_close;
913 dev->hard_start_xmit = hostap_data_start_xmit;
914 dev->set_mac_address = prism2_set_mac_address;
915 dev->set_multicast_list = hostap_set_multicast_list;
916 dev->change_mtu = prism2_change_mtu;
917 dev->tx_timeout = prism2_tx_timeout;
918 dev->watchdog_timeo = TX_TIMEOUT;
919
920 dev->mtu = local->mtu;
921 if (!main_dev) {
922 /* use main radio device queue */
923 dev->tx_queue_len = 0;
924 }
925
926 SET_ETHTOOL_OPS(dev, &prism2_ethtool_ops);
927
928 netif_stop_queue(dev);
929}
930
931
932static int hostap_enable_hostapd(local_info_t *local, int rtnl_locked)
933{
934 struct net_device *dev = local->dev;
935
936 if (local->apdev)
937 return -EEXIST;
938
939 printk(KERN_DEBUG "%s: enabling hostapd mode\n", dev->name);
940
941 local->apdev = hostap_add_interface(local, HOSTAP_INTERFACE_AP,
942 rtnl_locked, local->ddev->name,
943 "ap");
944 if (local->apdev == NULL)
945 return -ENOMEM;
946
947 local->apdev->hard_start_xmit = hostap_mgmt_start_xmit;
948 local->apdev->type = ARPHRD_IEEE80211;
949 local->apdev->hard_header_parse = hostap_80211_header_parse;
950
951 return 0;
952}
953
954
955static int hostap_disable_hostapd(local_info_t *local, int rtnl_locked)
956{
957 struct net_device *dev = local->dev;
958
959 printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name);
960
961 hostap_remove_interface(local->apdev, rtnl_locked, 1);
962 local->apdev = NULL;
963
964 return 0;
965}
966
967
968static int hostap_enable_hostapd_sta(local_info_t *local, int rtnl_locked)
969{
970 struct net_device *dev = local->dev;
971
972 if (local->stadev)
973 return -EEXIST;
974
975 printk(KERN_DEBUG "%s: enabling hostapd STA mode\n", dev->name);
976
977 local->stadev = hostap_add_interface(local, HOSTAP_INTERFACE_STA,
978 rtnl_locked, local->ddev->name,
979 "sta");
980 if (local->stadev == NULL)
981 return -ENOMEM;
982
983 return 0;
984}
985
986
987static int hostap_disable_hostapd_sta(local_info_t *local, int rtnl_locked)
988{
989 struct net_device *dev = local->dev;
990
991 printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name);
992
993 hostap_remove_interface(local->stadev, rtnl_locked, 1);
994 local->stadev = NULL;
995
996 return 0;
997}
998
999
1000int hostap_set_hostapd(local_info_t *local, int val, int rtnl_locked)
1001{
1002 int ret;
1003
1004 if (val < 0 || val > 1)
1005 return -EINVAL;
1006
1007 if (local->hostapd == val)
1008 return 0;
1009
1010 if (val) {
1011 ret = hostap_enable_hostapd(local, rtnl_locked);
1012 if (ret == 0)
1013 local->hostapd = 1;
1014 } else {
1015 local->hostapd = 0;
1016 ret = hostap_disable_hostapd(local, rtnl_locked);
1017 if (ret != 0)
1018 local->hostapd = 1;
1019 }
1020
1021 return ret;
1022}
1023
1024
1025int hostap_set_hostapd_sta(local_info_t *local, int val, int rtnl_locked)
1026{
1027 int ret;
1028
1029 if (val < 0 || val > 1)
1030 return -EINVAL;
1031
1032 if (local->hostapd_sta == val)
1033 return 0;
1034
1035 if (val) {
1036 ret = hostap_enable_hostapd_sta(local, rtnl_locked);
1037 if (ret == 0)
1038 local->hostapd_sta = 1;
1039 } else {
1040 local->hostapd_sta = 0;
1041 ret = hostap_disable_hostapd_sta(local, rtnl_locked);
1042 if (ret != 0)
1043 local->hostapd_sta = 1;
1044 }
1045
1046
1047 return ret;
1048}
1049
1050
1051int prism2_update_comms_qual(struct net_device *dev)
1052{
1053 struct hostap_interface *iface;
1054 local_info_t *local;
1055 int ret = 0;
1056 struct hfa384x_comms_quality sq;
1057
1058 iface = netdev_priv(dev);
1059 local = iface->local;
1060 if (!local->sta_fw_ver)
1061 ret = -1;
1062 else if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1)) {
1063 if (local->func->get_rid(local->dev,
1064 HFA384X_RID_DBMCOMMSQUALITY,
1065 &sq, sizeof(sq), 1) >= 0) {
1066 local->comms_qual = (s16) le16_to_cpu(sq.comm_qual);
1067 local->avg_signal = (s16) le16_to_cpu(sq.signal_level);
1068 local->avg_noise = (s16) le16_to_cpu(sq.noise_level);
1069 local->last_comms_qual_update = jiffies;
1070 } else
1071 ret = -1;
1072 } else {
1073 if (local->func->get_rid(local->dev, HFA384X_RID_COMMSQUALITY,
1074 &sq, sizeof(sq), 1) >= 0) {
1075 local->comms_qual = le16_to_cpu(sq.comm_qual);
1076 local->avg_signal = HFA384X_LEVEL_TO_dBm(
1077 le16_to_cpu(sq.signal_level));
1078 local->avg_noise = HFA384X_LEVEL_TO_dBm(
1079 le16_to_cpu(sq.noise_level));
1080 local->last_comms_qual_update = jiffies;
1081 } else
1082 ret = -1;
1083 }
1084
1085 return ret;
1086}
1087
1088
1089int prism2_sta_send_mgmt(local_info_t *local, u8 *dst, u16 stype,
1090 u8 *body, size_t bodylen)
1091{
1092 struct sk_buff *skb;
1093 struct hostap_ieee80211_mgmt *mgmt;
1094 struct hostap_skb_tx_data *meta;
1095 struct net_device *dev = local->dev;
1096
1097 skb = dev_alloc_skb(IEEE80211_MGMT_HDR_LEN + bodylen);
1098 if (skb == NULL)
1099 return -ENOMEM;
1100
1101 mgmt = (struct hostap_ieee80211_mgmt *)
1102 skb_put(skb, IEEE80211_MGMT_HDR_LEN);
1103 memset(mgmt, 0, IEEE80211_MGMT_HDR_LEN);
1104 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1105 memcpy(mgmt->da, dst, ETH_ALEN);
1106 memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
1107 memcpy(mgmt->bssid, dst, ETH_ALEN);
1108 if (body)
1109 memcpy(skb_put(skb, bodylen), body, bodylen);
1110
1111 meta = (struct hostap_skb_tx_data *) skb->cb;
1112 memset(meta, 0, sizeof(*meta));
1113 meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
1114 meta->iface = netdev_priv(dev);
1115
1116 skb->dev = dev;
1117 skb->mac.raw = skb->nh.raw = skb->data;
1118 dev_queue_xmit(skb);
1119
1120 return 0;
1121}
1122
1123
1124int prism2_sta_deauth(local_info_t *local, u16 reason)
1125{
1126 union iwreq_data wrqu;
1127 int ret;
1128
1129 if (local->iw_mode != IW_MODE_INFRA ||
1130 memcmp(local->bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0 ||
1131 memcmp(local->bssid, "\x44\x44\x44\x44\x44\x44", ETH_ALEN) == 0)
1132 return 0;
1133
1134 reason = cpu_to_le16(reason);
1135 ret = prism2_sta_send_mgmt(local, local->bssid, IEEE80211_STYPE_DEAUTH,
1136 (u8 *) &reason, 2);
1137 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1138 wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
1139 return ret;
1140}
1141
1142
1143struct proc_dir_entry *hostap_proc;
1144
1145static int __init hostap_init(void)
1146{
1147 if (proc_net != NULL) {
1148 hostap_proc = proc_mkdir("hostap", proc_net);
1149 if (!hostap_proc)
1150 printk(KERN_WARNING "Failed to mkdir "
1151 "/proc/net/hostap\n");
1152 } else
1153 hostap_proc = NULL;
1154
1155 return 0;
1156}
1157
1158
1159static void __exit hostap_exit(void)
1160{
1161 if (hostap_proc != NULL) {
1162 hostap_proc = NULL;
1163 remove_proc_entry("hostap", proc_net);
1164 }
1165}
1166
1167
1168EXPORT_SYMBOL(hostap_set_word);
1169EXPORT_SYMBOL(hostap_set_string);
1170EXPORT_SYMBOL(hostap_get_porttype);
1171EXPORT_SYMBOL(hostap_set_encryption);
1172EXPORT_SYMBOL(hostap_set_antsel);
1173EXPORT_SYMBOL(hostap_set_roaming);
1174EXPORT_SYMBOL(hostap_set_auth_algs);
1175EXPORT_SYMBOL(hostap_dump_rx_header);
1176EXPORT_SYMBOL(hostap_dump_tx_header);
1177EXPORT_SYMBOL(hostap_80211_header_parse);
1178EXPORT_SYMBOL(hostap_80211_prism_header_parse);
1179EXPORT_SYMBOL(hostap_80211_get_hdrlen);
1180EXPORT_SYMBOL(hostap_get_stats);
1181EXPORT_SYMBOL(hostap_setup_dev);
1182EXPORT_SYMBOL(hostap_proc);
1183EXPORT_SYMBOL(hostap_set_multicast_list_queue);
1184EXPORT_SYMBOL(hostap_set_hostapd);
1185EXPORT_SYMBOL(hostap_set_hostapd_sta);
1186EXPORT_SYMBOL(hostap_add_interface);
1187EXPORT_SYMBOL(hostap_remove_interface);
1188EXPORT_SYMBOL(prism2_update_comms_qual);
1189
1190module_init(hostap_init);
1191module_exit(hostap_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-04 12:14:23 -0500