projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[MAC80211]: move some rate control functions out of ieee80211.c
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / mac80211 / ieee80211.c
CommitLineData
f0706e82
JB		 1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <net/mac80211.h>
12#include <net/ieee80211_radiotap.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/netdevice.h>
16#include <linux/types.h>
17#include <linux/slab.h>
18#include <linux/skbuff.h>
19#include <linux/etherdevice.h>
20#include <linux/if_arp.h>
21#include <linux/wireless.h>
22#include <linux/rtnetlink.h>
f0706e82
JB		 23#include <linux/bitmap.h>
24#include <net/cfg80211.h>
25
26#include "ieee80211_common.h"
27#include "ieee80211_i.h"
28#include "ieee80211_rate.h"
29#include "wep.h"
f0706e82
JB		 30#include "wme.h"
31#include "aes_ccm.h"
32#include "ieee80211_led.h"
33#include "ieee80211_cfg.h"
e9f207f0
JB		 34#include "debugfs.h"
35#include "debugfs_netdev.h"
f0706e82
JB		 36
37/* privid for wiphys to determine whether they belong to us or not */
38void *mac80211_wiphy_privid = &mac80211_wiphy_privid;
39
40/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
41/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
571ecf67 42const unsigned char rfc1042_header[] =
f0706e82
JB		 43 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
44
45/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
571ecf67 46const unsigned char bridge_tunnel_header[] =
f0706e82
JB		 47 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
48
49/* No encapsulation header if EtherType < 0x600 (=length) */
50static const unsigned char eapol_header[] =
51 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00, 0x88, 0x8e };
52
53
b306f453
JB		 54/*
55 * For seeing transmitted packets on monitor interfaces
56 * we have a radiotap header too.
57 */
58struct ieee80211_tx_status_rtap_hdr {
59 struct ieee80211_radiotap_header hdr;
60 __le16 tx_flags;
61 u8 data_retries;
62} __attribute__ ((packed));
63
64
f0706e82
JB		 65static int rate_list_match(const int *rate_list, int rate)
66{
67 int i;
68
69 if (!rate_list)
70 return 0;
71
72 for (i = 0; rate_list[i] >= 0; i++)
73 if (rate_list[i] == rate)
74 return 1;
75
76 return 0;
77}
78
79
80void ieee80211_prepare_rates(struct ieee80211_local *local,
81 struct ieee80211_hw_mode *mode)
82{
83 int i;
84
85 for (i = 0; i < mode->num_rates; i++) {
86 struct ieee80211_rate *rate = &mode->rates[i];
87
88 rate->flags &= ~(IEEE80211_RATE_SUPPORTED |
89 IEEE80211_RATE_BASIC);
90
91 if (local->supp_rates[mode->mode]) {
92 if (!rate_list_match(local->supp_rates[mode->mode],
93 rate->rate))
94 continue;
95 }
96
97 rate->flags |= IEEE80211_RATE_SUPPORTED;
98
99 /* Use configured basic rate set if it is available. If not,
100 * use defaults that are sane for most cases. */
101 if (local->basic_rates[mode->mode]) {
102 if (rate_list_match(local->basic_rates[mode->mode],
103 rate->rate))
104 rate->flags |= IEEE80211_RATE_BASIC;
105 } else switch (mode->mode) {
106 case MODE_IEEE80211A:
107 if (rate->rate == 60 || rate->rate == 120 ||
108 rate->rate == 240)
109 rate->flags |= IEEE80211_RATE_BASIC;
110 break;
111 case MODE_IEEE80211B:
112 if (rate->rate == 10 || rate->rate == 20)
113 rate->flags |= IEEE80211_RATE_BASIC;
114 break;
115 case MODE_ATHEROS_TURBO:
116 if (rate->rate == 120 || rate->rate == 240 ||
117 rate->rate == 480)
118 rate->flags |= IEEE80211_RATE_BASIC;
119 break;
120 case MODE_IEEE80211G:
121 if (rate->rate == 10 || rate->rate == 20 ||
122 rate->rate == 55 || rate->rate == 110)
123 rate->flags |= IEEE80211_RATE_BASIC;
124 break;
125 }
126
127 /* Set ERP and MANDATORY flags based on phymode */
128 switch (mode->mode) {
129 case MODE_IEEE80211A:
130 if (rate->rate == 60 || rate->rate == 120 ||
131 rate->rate == 240)
132 rate->flags |= IEEE80211_RATE_MANDATORY;
133 break;
134 case MODE_IEEE80211B:
135 if (rate->rate == 10)
136 rate->flags |= IEEE80211_RATE_MANDATORY;
137 break;
138 case MODE_ATHEROS_TURBO:
139 break;
140 case MODE_IEEE80211G:
141 if (rate->rate == 10 || rate->rate == 20 ||
142 rate->rate == 55 || rate->rate == 110 ||
143 rate->rate == 60 || rate->rate == 120 ||
144 rate->rate == 240)
145 rate->flags |= IEEE80211_RATE_MANDATORY;
146 break;
147 }
148 if (ieee80211_is_erp_rate(mode->mode, rate->rate))
149 rate->flags |= IEEE80211_RATE_ERP;
150 }
151}
152
153
571ecf67
JB		 154void ieee80211_key_threshold_notify(struct net_device *dev,
155 struct ieee80211_key *key,
156 struct sta_info *sta)
f0706e82
JB		 157{
158 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
159 struct sk_buff *skb;
160 struct ieee80211_msg_key_notification *msg;
161
162 /* if no one will get it anyway, don't even allocate it.
163 * unlikely because this is only relevant for APs
164 * where the device must be open... */
165 if (unlikely(!local->apdev))
166 return;
167
168 skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
169 sizeof(struct ieee80211_msg_key_notification));
170 if (!skb)
171 return;
172
173 skb_reserve(skb, sizeof(struct ieee80211_frame_info));
174 msg = (struct ieee80211_msg_key_notification *)
175 skb_put(skb, sizeof(struct ieee80211_msg_key_notification));
176 msg->tx_rx_count = key->tx_rx_count;
177 memcpy(msg->ifname, dev->name, IFNAMSIZ);
178 if (sta)
179 memcpy(msg->addr, sta->addr, ETH_ALEN);
180 else
181 memset(msg->addr, 0xff, ETH_ALEN);
182
183 key->tx_rx_count = 0;
184
185 ieee80211_rx_mgmt(local, skb, NULL,
186 ieee80211_msg_key_threshold_notification);
187}
188
189
571ecf67 190u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
f0706e82
JB		 191{
192 u16 fc;
193
194 if (len < 24)
195 return NULL;
196
197 fc = le16_to_cpu(hdr->frame_control);
198
199 switch (fc & IEEE80211_FCTL_FTYPE) {
200 case IEEE80211_FTYPE_DATA:
201 switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
202 case IEEE80211_FCTL_TODS:
203 return hdr->addr1;
204 case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
205 return NULL;
206 case IEEE80211_FCTL_FROMDS:
207 return hdr->addr2;
208 case 0:
209 return hdr->addr3;
210 }
211 break;
212 case IEEE80211_FTYPE_MGMT:
213 return hdr->addr3;
214 case IEEE80211_FTYPE_CTL:
215 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)
216 return hdr->addr1;
e2ebc74d
JB		 217 else
218 return NULL;
f0706e82
JB		 219 }
220
e2ebc74d
JB		 221 return NULL;
222}
f0706e82 223
e2ebc74d
JB		 224int ieee80211_get_hdrlen(u16 fc)
225{
226 int hdrlen = 24;
f0706e82 227
e2ebc74d
JB		 228 switch (fc & IEEE80211_FCTL_FTYPE) {
229 case IEEE80211_FTYPE_DATA:
230 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
231 hdrlen = 30; /* Addr4 */
232 /*
233 * The QoS Control field is two bytes and its presence is
234 * indicated by the IEEE80211_STYPE_QOS_DATA bit. Add 2 to
235 * hdrlen if that bit is set.
236 * This works by masking out the bit and shifting it to
237 * bit position 1 so the result has the value 0 or 2.
238 */
239 hdrlen += (fc & IEEE80211_STYPE_QOS_DATA)
240 >> (ilog2(IEEE80211_STYPE_QOS_DATA)-1);
241 break;
242 case IEEE80211_FTYPE_CTL:
243 /*
244 * ACK and CTS are 10 bytes, all others 16. To see how
245 * to get this condition consider
246 * subtype mask: 0b0000000011110000 (0x00F0)
247 * ACK subtype: 0b0000000011010000 (0x00D0)
248 * CTS subtype: 0b0000000011000000 (0x00C0)
249 * bits that matter: ^^^ (0x00E0)
250 * value of those: 0b0000000011000000 (0x00C0)
251 */
252 if ((fc & 0xE0) == 0xC0)
253 hdrlen = 10;
f0706e82 254 else
e2ebc74d
JB		 255 hdrlen = 16;
256 break;
f0706e82 257 }
f0706e82 258
e2ebc74d
JB		 259 return hdrlen;
260}
261EXPORT_SYMBOL(ieee80211_get_hdrlen);
f0706e82 262
e2ebc74d
JB		 263int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
264{
265 const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *) skb->data;
266 int hdrlen;
f0706e82 267
e2ebc74d
JB		 268 if (unlikely(skb->len < 10))
269 return 0;
270 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
271 if (unlikely(hdrlen > skb->len))
272 return 0;
273 return hdrlen;
f0706e82 274}
e2ebc74d 275EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
f0706e82
JB		 276
277
e2ebc74d 278int ieee80211_is_eapol(const struct sk_buff *skb)
f0706e82 279{
e2ebc74d 280 const struct ieee80211_hdr *hdr;
f0706e82 281 u16 fc;
e2ebc74d 282 int hdrlen;
f0706e82 283
e2ebc74d 284 if (unlikely(skb->len < 10))
f0706e82 285 return 0;
f0706e82 286
e2ebc74d 287 hdr = (const struct ieee80211_hdr *) skb->data;
f0706e82
JB		 288 fc = le16_to_cpu(hdr->frame_control);
289
e2ebc74d
JB		 290 if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
291 return 0;
f0706e82 292
e2ebc74d 293 hdrlen = ieee80211_get_hdrlen(fc);
f0706e82 294
e2ebc74d
JB		 295 if (unlikely(skb->len >= hdrlen + sizeof(eapol_header) &&
296 memcmp(skb->data + hdrlen, eapol_header,
297 sizeof(eapol_header)) == 0))
298 return 1;
f0706e82
JB		 299
300 return 0;
301}
302
303
e2ebc74d 304void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
f0706e82 305{
e2ebc74d 306 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
f0706e82 307
e2ebc74d
JB		 308 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
309 if (tx->u.tx.extra_frag) {
310 struct ieee80211_hdr *fhdr;
311 int i;
312 for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
313 fhdr = (struct ieee80211_hdr *)
314 tx->u.tx.extra_frag[i]->data;
315 fhdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
f0706e82 316 }
f0706e82 317 }
f0706e82
JB		 318}
319
320
e2ebc74d
JB		 321static int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
322 int rate, int erp, int short_preamble)
f0706e82 323{
e2ebc74d 324 int dur;
f0706e82 325
e2ebc74d
JB		 326 /* calculate duration (in microseconds, rounded up to next higher
327 * integer if it includes a fractional microsecond) to send frame of
328 * len bytes (does not include FCS) at the given rate. Duration will
329 * also include SIFS.
330 *
331 * rate is in 100 kbps, so divident is multiplied by 10 in the
332 * DIV_ROUND_UP() operations.
333 */
f0706e82 334
e2ebc74d
JB		 335 if (local->hw.conf.phymode == MODE_IEEE80211A || erp ||
336 local->hw.conf.phymode == MODE_ATHEROS_TURBO) {
337 /*
338 * OFDM:
339 *
340 * N_DBPS = DATARATE x 4
341 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
342 * (16 = SIGNAL time, 6 = tail bits)
343 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
344 *
345 * T_SYM = 4 usec
346 * 802.11a - 17.5.2: aSIFSTime = 16 usec
347 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
348 * signal ext = 6 usec
349 */
350 /* FIX: Atheros Turbo may have different (shorter) duration? */
351 dur = 16; /* SIFS + signal ext */
352 dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
353 dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
354 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
355 4 * rate); /* T_SYM x N_SYM */
356 } else {
357 /*
358 * 802.11b or 802.11g with 802.11b compatibility:
359 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
360 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
361 *
362 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
363 * aSIFSTime = 10 usec
364 * aPreambleLength = 144 usec or 72 usec with short preamble
365 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
366 */
367 dur = 10; /* aSIFSTime = 10 usec */
368 dur += short_preamble ? (72 + 24) : (144 + 48);
f0706e82 369
e2ebc74d 370 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
f0706e82
JB		 371 }
372
e2ebc74d
JB		 373 return dur;
374}
f0706e82 375
f0706e82 376
e2ebc74d
JB		 377/* Exported duration function for driver use */
378__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
379 size_t frame_len, int rate)
380{
381 struct ieee80211_local *local = hw_to_local(hw);
382 u16 dur;
383 int erp;
384
385 erp = ieee80211_is_erp_rate(hw->conf.phymode, rate);
386 dur = ieee80211_frame_duration(local, frame_len, rate,
387 erp, local->short_preamble);
f0706e82 388
e2ebc74d 389 return cpu_to_le16(dur);
f0706e82 390}
e2ebc74d
JB		 391EXPORT_SYMBOL(ieee80211_generic_frame_duration);
392
f0706e82
JB		 393
394__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
395 size_t frame_len,
396 const struct ieee80211_tx_control *frame_txctl)
397{
398 struct ieee80211_local *local = hw_to_local(hw);
399 struct ieee80211_rate *rate;
400 int short_preamble = local->short_preamble;
401 int erp;
402 u16 dur;
403
404 rate = frame_txctl->rts_rate;
405 erp = !!(rate->flags & IEEE80211_RATE_ERP);
406
407 /* CTS duration */
408 dur = ieee80211_frame_duration(local, 10, rate->rate,
409 erp, short_preamble);
410 /* Data frame duration */
411 dur += ieee80211_frame_duration(local, frame_len, rate->rate,
412 erp, short_preamble);
413 /* ACK duration */
414 dur += ieee80211_frame_duration(local, 10, rate->rate,
415 erp, short_preamble);
416
417 return cpu_to_le16(dur);
418}
419EXPORT_SYMBOL(ieee80211_rts_duration);
420
421
422__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
423 size_t frame_len,
424 const struct ieee80211_tx_control *frame_txctl)
425{
426 struct ieee80211_local *local = hw_to_local(hw);
427 struct ieee80211_rate *rate;
428 int short_preamble = local->short_preamble;
429 int erp;
430 u16 dur;
431
432 rate = frame_txctl->rts_rate;
433 erp = !!(rate->flags & IEEE80211_RATE_ERP);
434
435 /* Data frame duration */
436 dur = ieee80211_frame_duration(local, frame_len, rate->rate,
437 erp, short_preamble);
438 if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) {
439 /* ACK duration */
440 dur += ieee80211_frame_duration(local, 10, rate->rate,
441 erp, short_preamble);
442 }
443
444 return cpu_to_le16(dur);
445}
446EXPORT_SYMBOL(ieee80211_ctstoself_duration);
447
f0706e82
JB		 448static int __ieee80211_if_config(struct net_device *dev,
449 struct sk_buff *beacon,
450 struct ieee80211_tx_control *control)
451{
452 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
453 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
454 struct ieee80211_if_conf conf;
455 static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
456
457 if (!local->ops->config_interface || !netif_running(dev))
458 return 0;
459
460 memset(&conf, 0, sizeof(conf));
461 conf.type = sdata->type;
462 if (sdata->type == IEEE80211_IF_TYPE_STA ||
463 sdata->type == IEEE80211_IF_TYPE_IBSS) {
464 if (local->sta_scanning &&
465 local->scan_dev == dev)
466 conf.bssid = scan_bssid;
467 else
468 conf.bssid = sdata->u.sta.bssid;
469 conf.ssid = sdata->u.sta.ssid;
470 conf.ssid_len = sdata->u.sta.ssid_len;
471 conf.generic_elem = sdata->u.sta.extra_ie;
472 conf.generic_elem_len = sdata->u.sta.extra_ie_len;
473 } else if (sdata->type == IEEE80211_IF_TYPE_AP) {
474 conf.ssid = sdata->u.ap.ssid;
475 conf.ssid_len = sdata->u.ap.ssid_len;
476 conf.generic_elem = sdata->u.ap.generic_elem;
477 conf.generic_elem_len = sdata->u.ap.generic_elem_len;
478 conf.beacon = beacon;
479 conf.beacon_control = control;
480 }
481 return local->ops->config_interface(local_to_hw(local),
482 dev->ifindex, &conf);
483}
484
485int ieee80211_if_config(struct net_device *dev)
486{
487 return __ieee80211_if_config(dev, NULL, NULL);
488}
489
490int ieee80211_if_config_beacon(struct net_device *dev)
491{
492 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
493 struct ieee80211_tx_control control;
494 struct sk_buff *skb;
495
496 if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
497 return 0;
498 skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control);
499 if (!skb)
500 return -ENOMEM;
501 return __ieee80211_if_config(dev, skb, &control);
502}
503
504int ieee80211_hw_config(struct ieee80211_local *local)
505{
506 struct ieee80211_hw_mode *mode;
507 struct ieee80211_channel *chan;
508 int ret = 0;
509
510 if (local->sta_scanning) {
511 chan = local->scan_channel;
512 mode = local->scan_hw_mode;
513 } else {
514 chan = local->oper_channel;
515 mode = local->oper_hw_mode;
516 }
517
518 local->hw.conf.channel = chan->chan;
519 local->hw.conf.channel_val = chan->val;
520 local->hw.conf.power_level = chan->power_level;
521 local->hw.conf.freq = chan->freq;
522 local->hw.conf.phymode = mode->mode;
523 local->hw.conf.antenna_max = chan->antenna_max;
524 local->hw.conf.chan = chan;
525 local->hw.conf.mode = mode;
526
527#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
528 printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d "
529 "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq,
530 local->hw.conf.phymode);
531#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
532
533 if (local->ops->config)
534 ret = local->ops->config(local_to_hw(local), &local->hw.conf);
535
536 return ret;
537}
538
539
540static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
541{
542 /* FIX: what would be proper limits for MTU?
543 * This interface uses 802.3 frames. */
544 if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) {
545 printk(KERN_WARNING "%s: invalid MTU %d\n",
546 dev->name, new_mtu);
547 return -EINVAL;
548 }
549
550#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
551 printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
552#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
553 dev->mtu = new_mtu;
554 return 0;
555}
556
557
558static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu)
559{
560 /* FIX: what would be proper limits for MTU?
561 * This interface uses 802.11 frames. */
562 if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) {
563 printk(KERN_WARNING "%s: invalid MTU %d\n",
564 dev->name, new_mtu);
565 return -EINVAL;
566 }
567
568#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
569 printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
570#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
571 dev->mtu = new_mtu;
572 return 0;
573}
574
575enum netif_tx_lock_class {
576 TX_LOCK_NORMAL,
577 TX_LOCK_MASTER,
578};
579
580static inline void netif_tx_lock_nested(struct net_device *dev, int subclass)
581{
582 spin_lock_nested(&dev->_xmit_lock, subclass);
583 dev->xmit_lock_owner = smp_processor_id();
584}
585
586static void ieee80211_set_multicast_list(struct net_device *dev)
587{
588 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
589 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
590 unsigned short flags;
591
592 netif_tx_lock_nested(local->mdev, TX_LOCK_MASTER);
593 if (((dev->flags & IFF_ALLMULTI) != 0) ^ (sdata->allmulti != 0)) {
594 if (sdata->allmulti) {
595 sdata->allmulti = 0;
596 local->iff_allmultis--;
597 } else {
598 sdata->allmulti = 1;
599 local->iff_allmultis++;
600 }
601 }
602 if (((dev->flags & IFF_PROMISC) != 0) ^ (sdata->promisc != 0)) {
603 if (sdata->promisc) {
604 sdata->promisc = 0;
605 local->iff_promiscs--;
606 } else {
607 sdata->promisc = 1;
608 local->iff_promiscs++;
609 }
610 }
611 if (dev->mc_count != sdata->mc_count) {
612 local->mc_count = local->mc_count - sdata->mc_count +
613 dev->mc_count;
614 sdata->mc_count = dev->mc_count;
615 }
616 if (local->ops->set_multicast_list) {
617 flags = local->mdev->flags;
618 if (local->iff_allmultis)
619 flags |= IFF_ALLMULTI;
620 if (local->iff_promiscs)
621 flags |= IFF_PROMISC;
622 read_lock(&local->sub_if_lock);
623 local->ops->set_multicast_list(local_to_hw(local), flags,
624 local->mc_count);
625 read_unlock(&local->sub_if_lock);
626 }
627 netif_tx_unlock(local->mdev);
628}
629
630struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw,
631 struct dev_mc_list *prev,
632 void **ptr)
633{
634 struct ieee80211_local *local = hw_to_local(hw);
635 struct ieee80211_sub_if_data *sdata = *ptr;
636 struct dev_mc_list *mc;
637
638 if (!prev) {
639 WARN_ON(sdata);
640 sdata = NULL;
641 }
642 if (!prev || !prev->next) {
643 if (sdata)
644 sdata = list_entry(sdata->list.next,
645 struct ieee80211_sub_if_data, list);
646 else
647 sdata = list_entry(local->sub_if_list.next,
648 struct ieee80211_sub_if_data, list);
649 if (&sdata->list != &local->sub_if_list)
650 mc = sdata->dev->mc_list;
651 else
652 mc = NULL;
653 } else
654 mc = prev->next;
655
656 *ptr = sdata;
657 return mc;
658}
659EXPORT_SYMBOL(ieee80211_get_mc_list_item);
660
661static struct net_device_stats *ieee80211_get_stats(struct net_device *dev)
662{
663 struct ieee80211_sub_if_data *sdata;
664 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
665 return &(sdata->stats);
666}
667
668static void ieee80211_if_shutdown(struct net_device *dev)
669{
670 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
671 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
672
673 ASSERT_RTNL();
674 switch (sdata->type) {
675 case IEEE80211_IF_TYPE_STA:
676 case IEEE80211_IF_TYPE_IBSS:
677 sdata->u.sta.state = IEEE80211_DISABLED;
678 del_timer_sync(&sdata->u.sta.timer);
679 skb_queue_purge(&sdata->u.sta.skb_queue);
680 if (!local->ops->hw_scan &&
681 local->scan_dev == sdata->dev) {
682 local->sta_scanning = 0;
683 cancel_delayed_work(&local->scan_work);
684 }
685 flush_workqueue(local->hw.workqueue);
686 break;
687 }
688}
689
690static inline int identical_mac_addr_allowed(int type1, int type2)
691{
692 return (type1 == IEEE80211_IF_TYPE_MNTR ||
693 type2 == IEEE80211_IF_TYPE_MNTR ||
694 (type1 == IEEE80211_IF_TYPE_AP &&
695 type2 == IEEE80211_IF_TYPE_WDS) ||
696 (type1 == IEEE80211_IF_TYPE_WDS &&
697 (type2 == IEEE80211_IF_TYPE_WDS ||
698 type2 == IEEE80211_IF_TYPE_AP)) ||
699 (type1 == IEEE80211_IF_TYPE_AP &&
700 type2 == IEEE80211_IF_TYPE_VLAN) ||
701 (type1 == IEEE80211_IF_TYPE_VLAN &&
702 (type2 == IEEE80211_IF_TYPE_AP ||
703 type2 == IEEE80211_IF_TYPE_VLAN)));
704}
705
706static int ieee80211_master_open(struct net_device *dev)
707{
708 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
709 struct ieee80211_sub_if_data *sdata;
710 int res = -EOPNOTSUPP;
711
712 read_lock(&local->sub_if_lock);
713 list_for_each_entry(sdata, &local->sub_if_list, list) {
714 if (sdata->dev != dev && netif_running(sdata->dev)) {
715 res = 0;
716 break;
717 }
718 }
719 read_unlock(&local->sub_if_lock);
720 return res;
721}
722
723static int ieee80211_master_stop(struct net_device *dev)
724{
725 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
726 struct ieee80211_sub_if_data *sdata;
727
728 read_lock(&local->sub_if_lock);
729 list_for_each_entry(sdata, &local->sub_if_list, list)
730 if (sdata->dev != dev && netif_running(sdata->dev))
731 dev_close(sdata->dev);
732 read_unlock(&local->sub_if_lock);
733
734 return 0;
735}
736
737static int ieee80211_mgmt_open(struct net_device *dev)
738{
739 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
740
741 if (!netif_running(local->mdev))
742 return -EOPNOTSUPP;
743 return 0;
744}
745
746static int ieee80211_mgmt_stop(struct net_device *dev)
747{
748 return 0;
749}
750
751/* Check if running monitor interfaces should go to a "soft monitor" mode
752 * and switch them if necessary. */
753static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local)
754{
755 struct ieee80211_if_init_conf conf;
756
757 if (local->open_count && local->open_count == local->monitors &&
758 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
759 local->ops->remove_interface) {
760 conf.if_id = -1;
761 conf.type = IEEE80211_IF_TYPE_MNTR;
762 conf.mac_addr = NULL;
763 local->ops->remove_interface(local_to_hw(local), &conf);
764 }
765}
766
767/* Check if running monitor interfaces should go to a "hard monitor" mode
768 * and switch them if necessary. */
769static void ieee80211_start_hard_monitor(struct ieee80211_local *local)
770{
771 struct ieee80211_if_init_conf conf;
772
773 if (local->open_count && local->open_count == local->monitors &&
4480f15c 774 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
f0706e82
JB		 775 conf.if_id = -1;
776 conf.type = IEEE80211_IF_TYPE_MNTR;
777 conf.mac_addr = NULL;
778 local->ops->add_interface(local_to_hw(local), &conf);
779 }
780}
781
782static int ieee80211_open(struct net_device *dev)
783{
784 struct ieee80211_sub_if_data *sdata, *nsdata;
785 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
786 struct ieee80211_if_init_conf conf;
787 int res;
788
789 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
790 read_lock(&local->sub_if_lock);
791 list_for_each_entry(nsdata, &local->sub_if_list, list) {
792 struct net_device *ndev = nsdata->dev;
793
794 if (ndev != dev && ndev != local->mdev && netif_running(ndev) &&
795 compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 &&
796 !identical_mac_addr_allowed(sdata->type, nsdata->type)) {
797 read_unlock(&local->sub_if_lock);
798 return -ENOTUNIQ;
799 }
800 }
801 read_unlock(&local->sub_if_lock);
802
803 if (sdata->type == IEEE80211_IF_TYPE_WDS &&
804 is_zero_ether_addr(sdata->u.wds.remote_addr))
805 return -ENOLINK;
806
807 if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count &&
808 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
809 /* run the interface in a "soft monitor" mode */
810 local->monitors++;
811 local->open_count++;
812 local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
813 return 0;
814 }
815 ieee80211_start_soft_monitor(local);
816
4480f15c
JB		 817 conf.if_id = dev->ifindex;
818 conf.type = sdata->type;
819 conf.mac_addr = dev->dev_addr;
820 res = local->ops->add_interface(local_to_hw(local), &conf);
821 if (res) {
822 if (sdata->type == IEEE80211_IF_TYPE_MNTR)
823 ieee80211_start_hard_monitor(local);
824 return res;
f0706e82
JB		 825 }
826
827 if (local->open_count == 0) {
828 res = 0;
829 tasklet_enable(&local->tx_pending_tasklet);
830 tasklet_enable(&local->tasklet);
831 if (local->ops->open)
832 res = local->ops->open(local_to_hw(local));
833 if (res == 0) {
834 res = dev_open(local->mdev);
835 if (res) {
836 if (local->ops->stop)
837 local->ops->stop(local_to_hw(local));
838 } else {
839 res = ieee80211_hw_config(local);
840 if (res && local->ops->stop)
841 local->ops->stop(local_to_hw(local));
842 else if (!res && local->apdev)
843 dev_open(local->apdev);
844 }
845 }
846 if (res) {
847 if (local->ops->remove_interface)
848 local->ops->remove_interface(local_to_hw(local),
849 &conf);
850 return res;
851 }
852 }
853 local->open_count++;
854
855 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
856 local->monitors++;
857 local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
858 } else
859 ieee80211_if_config(dev);
860
861 if (sdata->type == IEEE80211_IF_TYPE_STA &&
862 !local->user_space_mlme)
863 netif_carrier_off(dev);
52fb24cd
MW		 864 else
865 netif_carrier_on(dev);
f0706e82
JB		 866
867 netif_start_queue(dev);
868 return 0;
869}
870
871
872static int ieee80211_stop(struct net_device *dev)
873{
874 struct ieee80211_sub_if_data *sdata;
875 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
876
877 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
878
879 if (sdata->type == IEEE80211_IF_TYPE_MNTR &&
880 local->open_count > 1 &&
881 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
882 /* remove "soft monitor" interface */
883 local->open_count--;
884 local->monitors--;
885 if (!local->monitors)
886 local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
887 return 0;
888 }
889
890 netif_stop_queue(dev);
891 ieee80211_if_shutdown(dev);
892
893 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
894 local->monitors--;
895 if (!local->monitors)
896 local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
897 }
898
899 local->open_count--;
900 if (local->open_count == 0) {
901 if (netif_running(local->mdev))
902 dev_close(local->mdev);
903 if (local->apdev)
904 dev_close(local->apdev);
905 if (local->ops->stop)
906 local->ops->stop(local_to_hw(local));
907 tasklet_disable(&local->tx_pending_tasklet);
908 tasklet_disable(&local->tasklet);
909 }
910 if (local->ops->remove_interface) {
911 struct ieee80211_if_init_conf conf;
912
913 conf.if_id = dev->ifindex;
914 conf.type = sdata->type;
915 conf.mac_addr = dev->dev_addr;
916 local->ops->remove_interface(local_to_hw(local), &conf);
917 }
918
919 ieee80211_start_hard_monitor(local);
920
921 return 0;
922}
923
924
925static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
926{
927 memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
928 return ETH_ALEN;
929}
930
571ecf67 931struct ieee80211_rate *
f0706e82
JB		 932ieee80211_get_rate(struct ieee80211_local *local, int phymode, int hw_rate)
933{
934 struct ieee80211_hw_mode *mode;
935 int r;
936
937 list_for_each_entry(mode, &local->modes_list, list) {
938 if (mode->mode != phymode)
939 continue;
940 for (r = 0; r < mode->num_rates; r++) {
941 struct ieee80211_rate *rate = &mode->rates[r];
942 if (rate->val == hw_rate ||
943 (rate->flags & IEEE80211_RATE_PREAMBLE2 &&
944 rate->val2 == hw_rate))
945 return rate;
946 }
947 }
948
949 return NULL;
950}
951
952static void
953ieee80211_fill_frame_info(struct ieee80211_local *local,
954 struct ieee80211_frame_info *fi,
955 struct ieee80211_rx_status *status)
956{
957 if (status) {
958 struct timespec ts;
959 struct ieee80211_rate *rate;
960
961 jiffies_to_timespec(jiffies, &ts);
962 fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 +
963 ts.tv_nsec / 1000);
964 fi->mactime = cpu_to_be64(status->mactime);
965 switch (status->phymode) {
966 case MODE_IEEE80211A:
967 fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a);
968 break;
969 case MODE_IEEE80211B:
970 fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b);
971 break;
972 case MODE_IEEE80211G:
973 fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g);
974 break;
975 case MODE_ATHEROS_TURBO:
976 fi->phytype =
977 htonl(ieee80211_phytype_dsss_dot11_turbo);
978 break;
979 default:
980 fi->phytype = htonl(0xAAAAAAAA);
981 break;
982 }
983 fi->channel = htonl(status->channel);
984 rate = ieee80211_get_rate(local, status->phymode,
985 status->rate);
986 if (rate) {
987 fi->datarate = htonl(rate->rate);
988 if (rate->flags & IEEE80211_RATE_PREAMBLE2) {
989 if (status->rate == rate->val)
990 fi->preamble = htonl(2); /* long */
991 else if (status->rate == rate->val2)
992 fi->preamble = htonl(1); /* short */
993 } else
994 fi->preamble = htonl(0);
995 } else {
996 fi->datarate = htonl(0);
997 fi->preamble = htonl(0);
998 }
999
1000 fi->antenna = htonl(status->antenna);
1001 fi->priority = htonl(0xffffffff); /* no clue */
1002 fi->ssi_type = htonl(ieee80211_ssi_raw);
1003 fi->ssi_signal = htonl(status->ssi);
1004 fi->ssi_noise = 0x00000000;
1005 fi->encoding = 0;
1006 } else {
1007 /* clear everything because we really don't know.
1008 * the msg_type field isn't present on monitor frames
1009 * so we don't know whether it will be present or not,
1010 * but it's ok to not clear it since it'll be assigned
1011 * anyway */
1012 memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type));
1013
1014 fi->ssi_type = htonl(ieee80211_ssi_none);
1015 }
1016 fi->version = htonl(IEEE80211_FI_VERSION);
1017 fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type));
1018}
1019
1020/* this routine is actually not just for this, but also
1021 * for pushing fake 'management' frames into userspace.
1022 * it shall be replaced by a netlink-based system. */
1023void
1024ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
1025 struct ieee80211_rx_status *status, u32 msg_type)
1026{
1027 struct ieee80211_frame_info *fi;
1028 const size_t hlen = sizeof(struct ieee80211_frame_info);
1029 struct ieee80211_sub_if_data *sdata;
1030
1031 skb->dev = local->apdev;
1032
1033 sdata = IEEE80211_DEV_TO_SUB_IF(local->apdev);
1034
1035 if (skb_headroom(skb) < hlen) {
1036 I802_DEBUG_INC(local->rx_expand_skb_head);
1037 if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) {
1038 dev_kfree_skb(skb);
1039 return;
1040 }
1041 }
1042
1043 fi = (struct ieee80211_frame_info *) skb_push(skb, hlen);
1044
1045 ieee80211_fill_frame_info(local, fi, status);
1046 fi->msg_type = htonl(msg_type);
1047
1048 sdata->stats.rx_packets++;
1049 sdata->stats.rx_bytes += skb->len;
1050
1051 skb_set_mac_header(skb, 0);
1052 skb->ip_summed = CHECKSUM_UNNECESSARY;
1053 skb->pkt_type = PACKET_OTHERHOST;
1054 skb->protocol = htons(ETH_P_802_2);
1055 memset(skb->cb, 0, sizeof(skb->cb));
1056 netif_rx(skb);
1057}
1058
f0706e82
JB		 1059int ieee80211_radar_status(struct ieee80211_hw *hw, int channel,
1060 int radar, int radar_type)
1061{
1062 struct sk_buff *skb;
1063 struct ieee80211_radar_info *msg;
1064 struct ieee80211_local *local = hw_to_local(hw);
1065
1066 if (!local->apdev)
1067 return 0;
1068
1069 skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
1070 sizeof(struct ieee80211_radar_info));
1071
1072 if (!skb)
1073 return -ENOMEM;
1074 skb_reserve(skb, sizeof(struct ieee80211_frame_info));
1075
1076 msg = (struct ieee80211_radar_info *)
1077 skb_put(skb, sizeof(struct ieee80211_radar_info));
1078 msg->channel = channel;
1079 msg->radar = radar;
1080 msg->radar_type = radar_type;
1081
1082 ieee80211_rx_mgmt(local, skb, NULL, ieee80211_msg_radar);
1083 return 0;
1084}
1085EXPORT_SYMBOL(ieee80211_radar_status);
1086
f0706e82 1087
f0706e82
JB		 1088static void ieee80211_stat_refresh(unsigned long data)
1089{
1090 struct ieee80211_local *local = (struct ieee80211_local *) data;
1091 struct sta_info *sta;
1092 struct ieee80211_sub_if_data *sdata;
1093
1094 if (!local->stat_time)
1095 return;
1096
1097 /* go through all stations */
1098 spin_lock_bh(&local->sta_lock);
1099 list_for_each_entry(sta, &local->sta_list, list) {
1100 sta->channel_use = (sta->channel_use_raw / local->stat_time) /
1101 CHAN_UTIL_PER_10MS;
1102 sta->channel_use_raw = 0;
1103 }
1104 spin_unlock_bh(&local->sta_lock);
1105
1106 /* go through all subinterfaces */
1107 read_lock(&local->sub_if_lock);
1108 list_for_each_entry(sdata, &local->sub_if_list, list) {
1109 sdata->channel_use = (sdata->channel_use_raw /
1110 local->stat_time) / CHAN_UTIL_PER_10MS;
1111 sdata->channel_use_raw = 0;
1112 }
1113 read_unlock(&local->sub_if_lock);
1114
1115 /* hardware interface */
1116 local->channel_use = (local->channel_use_raw /
1117 local->stat_time) / CHAN_UTIL_PER_10MS;
1118 local->channel_use_raw = 0;
1119
1120 local->stat_timer.expires = jiffies + HZ * local->stat_time / 100;
1121 add_timer(&local->stat_timer);
1122}
1123
1124
f0706e82
JB		 1125void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
1126 struct sk_buff *skb,
1127 struct ieee80211_tx_status *status)
1128{
1129 struct ieee80211_local *local = hw_to_local(hw);
1130 struct ieee80211_tx_status *saved;
1131 int tmp;
1132
1133 skb->dev = local->mdev;
1134 saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
1135 if (unlikely(!saved)) {
1136 if (net_ratelimit())
1137 printk(KERN_WARNING "%s: Not enough memory, "
1138 "dropping tx status", skb->dev->name);
1139 /* should be dev_kfree_skb_irq, but due to this function being
1140 * named _irqsafe instead of just _irq we can't be sure that
1141 * people won't call it from non-irq contexts */
1142 dev_kfree_skb_any(skb);
1143 return;
1144 }
1145 memcpy(saved, status, sizeof(struct ieee80211_tx_status));
1146 /* copy pointer to saved status into skb->cb for use by tasklet */
1147 memcpy(skb->cb, &saved, sizeof(saved));
1148
1149 skb->pkt_type = IEEE80211_TX_STATUS_MSG;
1150 skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
1151 &local->skb_queue : &local->skb_queue_unreliable, skb);
1152 tmp = skb_queue_len(&local->skb_queue) +
1153 skb_queue_len(&local->skb_queue_unreliable);
1154 while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
1155 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
1156 memcpy(&saved, skb->cb, sizeof(saved));
1157 kfree(saved);
1158 dev_kfree_skb_irq(skb);
1159 tmp--;
1160 I802_DEBUG_INC(local->tx_status_drop);
1161 }
1162 tasklet_schedule(&local->tasklet);
1163}
1164EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
1165
1166static void ieee80211_tasklet_handler(unsigned long data)
1167{
1168 struct ieee80211_local *local = (struct ieee80211_local *) data;
1169 struct sk_buff *skb;
1170 struct ieee80211_rx_status rx_status;
1171 struct ieee80211_tx_status *tx_status;
1172
1173 while ((skb = skb_dequeue(&local->skb_queue)) ||
1174 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
1175 switch (skb->pkt_type) {
1176 case IEEE80211_RX_MSG:
1177 /* status is in skb->cb */
1178 memcpy(&rx_status, skb->cb, sizeof(rx_status));
1179 /* Clear skb->type in order to not confuse kernel
1180 * netstack. */
1181 skb->pkt_type = 0;
1182 __ieee80211_rx(local_to_hw(local), skb, &rx_status);
1183 break;
1184 case IEEE80211_TX_STATUS_MSG:
1185 /* get pointer to saved status out of skb->cb */
1186 memcpy(&tx_status, skb->cb, sizeof(tx_status));
1187 skb->pkt_type = 0;
1188 ieee80211_tx_status(local_to_hw(local),
1189 skb, tx_status);
1190 kfree(tx_status);
1191 break;
1192 default: /* should never get here! */
1193 printk(KERN_ERR "%s: Unknown message type (%d)\n",
1194 local->mdev->name, skb->pkt_type);
1195 dev_kfree_skb(skb);
1196 break;
1197 }
1198 }
1199}
1200
1201
1202/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
1203 * make a prepared TX frame (one that has been given to hw) to look like brand
1204 * new IEEE 802.11 frame that is ready to go through TX processing again.
1205 * Also, tx_packet_data in cb is restored from tx_control. */
1206static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
1207 struct ieee80211_key *key,
1208 struct sk_buff *skb,
1209 struct ieee80211_tx_control *control)
1210{
1211 int hdrlen, iv_len, mic_len;
1212 struct ieee80211_tx_packet_data *pkt_data;
1213
1214 pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
1215 pkt_data->ifindex = control->ifindex;
1216 pkt_data->mgmt_iface = (control->type == IEEE80211_IF_TYPE_MGMT);
1217 pkt_data->req_tx_status = !!(control->flags & IEEE80211_TXCTL_REQ_TX_STATUS);
1218 pkt_data->do_not_encrypt = !!(control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT);
1219 pkt_data->requeue = !!(control->flags & IEEE80211_TXCTL_REQUEUE);
1220 pkt_data->queue = control->queue;
1221
1222 hdrlen = ieee80211_get_hdrlen_from_skb(skb);
1223
1224 if (!key)
1225 goto no_key;
1226
1227 switch (key->alg) {
1228 case ALG_WEP:
1229 iv_len = WEP_IV_LEN;
1230 mic_len = WEP_ICV_LEN;
1231 break;
1232 case ALG_TKIP:
1233 iv_len = TKIP_IV_LEN;
1234 mic_len = TKIP_ICV_LEN;
1235 break;
1236 case ALG_CCMP:
1237 iv_len = CCMP_HDR_LEN;
1238 mic_len = CCMP_MIC_LEN;
1239 break;
1240 default:
1241 goto no_key;
1242 }
1243
1244 if (skb->len >= mic_len && key->force_sw_encrypt)
1245 skb_trim(skb, skb->len - mic_len);
1246 if (skb->len >= iv_len && skb->len > hdrlen) {
1247 memmove(skb->data + iv_len, skb->data, hdrlen);
1248 skb_pull(skb, iv_len);
1249 }
1250
1251no_key:
1252 {
1253 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1254 u16 fc = le16_to_cpu(hdr->frame_control);
1255 if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
1256 fc &= ~IEEE80211_STYPE_QOS_DATA;
1257 hdr->frame_control = cpu_to_le16(fc);
1258 memmove(skb->data + 2, skb->data, hdrlen - 2);
1259 skb_pull(skb, 2);
1260 }
1261 }
1262}
1263
1264
1265void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
1266 struct ieee80211_tx_status *status)
1267{
1268 struct sk_buff *skb2;
1269 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1270 struct ieee80211_local *local = hw_to_local(hw);
1271 u16 frag, type;
1272 u32 msg_type;
b306f453
JB		 1273 struct ieee80211_tx_status_rtap_hdr *rthdr;
1274 struct ieee80211_sub_if_data *sdata;
1275 int monitors;
f0706e82
JB		 1276
1277 if (!status) {
1278 printk(KERN_ERR
1279 "%s: ieee80211_tx_status called with NULL status\n",
1280 local->mdev->name);
1281 dev_kfree_skb(skb);
1282 return;
1283 }
1284
1285 if (status->excessive_retries) {
1286 struct sta_info *sta;
1287 sta = sta_info_get(local, hdr->addr1);
1288 if (sta) {
1289 if (sta->flags & WLAN_STA_PS) {
1290 /* The STA is in power save mode, so assume
1291 * that this TX packet failed because of that.
1292 */
1293 status->excessive_retries = 0;
1294 status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
1295 }
1296 sta_info_put(sta);
1297 }
1298 }
1299
1300 if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
1301 struct sta_info *sta;
1302 sta = sta_info_get(local, hdr->addr1);
1303 if (sta) {
1304 sta->tx_filtered_count++;
1305
1306 /* Clear the TX filter mask for this STA when sending
1307 * the next packet. If the STA went to power save mode,
1308 * this will happen when it is waking up for the next
1309 * time. */
1310 sta->clear_dst_mask = 1;
1311
1312 /* TODO: Is the WLAN_STA_PS flag always set here or is
1313 * the race between RX and TX status causing some
1314 * packets to be filtered out before 80211.o gets an
1315 * update for PS status? This seems to be the case, so
1316 * no changes are likely to be needed. */
1317 if (sta->flags & WLAN_STA_PS &&
1318 skb_queue_len(&sta->tx_filtered) <
1319 STA_MAX_TX_BUFFER) {
1320 ieee80211_remove_tx_extra(local, sta->key,
1321 skb,
1322 &status->control);
1323 skb_queue_tail(&sta->tx_filtered, skb);
1324 } else if (!(sta->flags & WLAN_STA_PS) &&
1325 !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
1326 /* Software retry the packet once */
1327 status->control.flags |= IEEE80211_TXCTL_REQUEUE;
1328 ieee80211_remove_tx_extra(local, sta->key,
1329 skb,
1330 &status->control);
1331 dev_queue_xmit(skb);
1332 } else {
1333 if (net_ratelimit()) {
1334 printk(KERN_DEBUG "%s: dropped TX "
1335 "filtered frame queue_len=%d "
1336 "PS=%d @%lu\n",
1337 local->mdev->name,
1338 skb_queue_len(
1339 &sta->tx_filtered),
1340 !!(sta->flags & WLAN_STA_PS),
1341 jiffies);
1342 }
1343 dev_kfree_skb(skb);
1344 }
1345 sta_info_put(sta);
1346 return;
1347 }
1348 } else {
1349 /* FIXME: STUPID to call this with both local and local->mdev */
1350 rate_control_tx_status(local, local->mdev, skb, status);
1351 }
1352
1353 ieee80211_led_tx(local, 0);
1354
1355 /* SNMP counters
1356 * Fragments are passed to low-level drivers as separate skbs, so these
1357 * are actually fragments, not frames. Update frame counters only for
1358 * the first fragment of the frame. */
1359
1360 frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
1361 type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
1362
1363 if (status->flags & IEEE80211_TX_STATUS_ACK) {
1364 if (frag == 0) {
1365 local->dot11TransmittedFrameCount++;
1366 if (is_multicast_ether_addr(hdr->addr1))
1367 local->dot11MulticastTransmittedFrameCount++;
1368 if (status->retry_count > 0)
1369 local->dot11RetryCount++;
1370 if (status->retry_count > 1)
1371 local->dot11MultipleRetryCount++;
1372 }
1373
1374 /* This counter shall be incremented for an acknowledged MPDU
1375 * with an individual address in the address 1 field or an MPDU
1376 * with a multicast address in the address 1 field of type Data
1377 * or Management. */
1378 if (!is_multicast_ether_addr(hdr->addr1) ||
1379 type == IEEE80211_FTYPE_DATA ||
1380 type == IEEE80211_FTYPE_MGMT)
1381 local->dot11TransmittedFragmentCount++;
1382 } else {
1383 if (frag == 0)
1384 local->dot11FailedCount++;
1385 }
1386
b306f453
JB		 1387 msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ?
1388 ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail;
1389
1390 /* this was a transmitted frame, but now we want to reuse it */
1391 skb_orphan(skb);
1392
1393 if ((status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) &&
1394 local->apdev) {
1395 if (local->monitors) {
1396 skb2 = skb_clone(skb, GFP_ATOMIC);
1397 } else {
1398 skb2 = skb;
1399 skb = NULL;
1400 }
1401
1402 if (skb2)
1403 /* Send frame to hostapd */
1404 ieee80211_rx_mgmt(local, skb2, NULL, msg_type);
1405
1406 if (!skb)
1407 return;
1408 }
1409
1410 if (!local->monitors) {
f0706e82
JB		 1411 dev_kfree_skb(skb);
1412 return;
1413 }
1414
b306f453 1415 /* send frame to monitor interfaces now */
f0706e82 1416
b306f453
JB		 1417 if (skb_headroom(skb) < sizeof(*rthdr)) {
1418 printk(KERN_ERR "ieee80211_tx_status: headroom too small\n");
f0706e82
JB		 1419 dev_kfree_skb(skb);
1420 return;
1421 }
f0706e82 1422
b306f453
JB		 1423 rthdr = (struct ieee80211_tx_status_rtap_hdr*)
1424 skb_push(skb, sizeof(*rthdr));
1425
1426 memset(rthdr, 0, sizeof(*rthdr));
1427 rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
1428 rthdr->hdr.it_present =
1429 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
1430 (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
1431
1432 if (!(status->flags & IEEE80211_TX_STATUS_ACK) &&
1433 !is_multicast_ether_addr(hdr->addr1))
1434 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
1435
1436 if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) &&
1437 (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT))
1438 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
1439 else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS)
1440 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
1441
1442 rthdr->data_retries = status->retry_count;
1443
1444 read_lock(&local->sub_if_lock);
1445 monitors = local->monitors;
1446 list_for_each_entry(sdata, &local->sub_if_list, list) {
1447 /*
1448 * Using the monitors counter is possibly racy, but
1449 * if the value is wrong we simply either clone the skb
1450 * once too much or forget sending it to one monitor iface
1451 * The latter case isn't nice but fixing the race is much
1452 * more complicated.
1453 */
1454 if (!monitors || !skb)
1455 goto out;
1456
1457 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
1458 if (!netif_running(sdata->dev))
1459 continue;
1460 monitors--;
1461 if (monitors)
1462 skb2 = skb_clone(skb, GFP_KERNEL);
1463 else
1464 skb2 = NULL;
1465 skb->dev = sdata->dev;
1466 /* XXX: is this sufficient for BPF? */
1467 skb_set_mac_header(skb, 0);
1468 skb->ip_summed = CHECKSUM_UNNECESSARY;
1469 skb->pkt_type = PACKET_OTHERHOST;
1470 skb->protocol = htons(ETH_P_802_2);
1471 memset(skb->cb, 0, sizeof(skb->cb));
1472 netif_rx(skb);
1473 skb = skb2;
b306f453
JB		 1474 }
1475 }
1476 out:
1477 read_unlock(&local->sub_if_lock);
1478 if (skb)
1479 dev_kfree_skb(skb);
f0706e82
JB		 1480}
1481EXPORT_SYMBOL(ieee80211_tx_status);
1482
f0706e82
JB		 1483
1484int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
1485{
1486 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1487 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1488 struct sta_info *sta;
1489
1490 if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0)
1491 return 0;
1492
1493 /* Create STA entry for the new peer */
1494 sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL);
1495 if (!sta)
1496 return -ENOMEM;
1497 sta_info_put(sta);
1498
1499 /* Remove STA entry for the old peer */
1500 sta = sta_info_get(local, sdata->u.wds.remote_addr);
1501 if (sta) {
1502 sta_info_put(sta);
1503 sta_info_free(sta, 0);
1504 } else {
1505 printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
1506 "peer " MAC_FMT "\n",
1507 dev->name, MAC_ARG(sdata->u.wds.remote_addr));
1508 }
1509
1510 /* Update WDS link data */
1511 memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN);
1512
1513 return 0;
1514}
1515
1516/* Must not be called for mdev and apdev */
1517void ieee80211_if_setup(struct net_device *dev)
1518{
1519 ether_setup(dev);
1520 dev->hard_start_xmit = ieee80211_subif_start_xmit;
1521 dev->wireless_handlers = &ieee80211_iw_handler_def;
1522 dev->set_multicast_list = ieee80211_set_multicast_list;
1523 dev->change_mtu = ieee80211_change_mtu;
1524 dev->get_stats = ieee80211_get_stats;
1525 dev->open = ieee80211_open;
1526 dev->stop = ieee80211_stop;
1527 dev->uninit = ieee80211_if_reinit;
1528 dev->destructor = ieee80211_if_free;
1529}
1530
1531void ieee80211_if_mgmt_setup(struct net_device *dev)
1532{
1533 ether_setup(dev);
1534 dev->hard_start_xmit = ieee80211_mgmt_start_xmit;
1535 dev->change_mtu = ieee80211_change_mtu_apdev;
1536 dev->get_stats = ieee80211_get_stats;
1537 dev->open = ieee80211_mgmt_open;
1538 dev->stop = ieee80211_mgmt_stop;
1539 dev->type = ARPHRD_IEEE80211_PRISM;
1540 dev->hard_header_parse = header_parse_80211;
1541 dev->uninit = ieee80211_if_reinit;
1542 dev->destructor = ieee80211_if_free;
1543}
1544
f0706e82
JB		 1545struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
1546 const struct ieee80211_ops *ops)
1547{
1548 struct net_device *mdev;
1549 struct ieee80211_local *local;
1550 struct ieee80211_sub_if_data *sdata;
1551 int priv_size;
1552 struct wiphy *wiphy;
1553
1554 /* Ensure 32-byte alignment of our private data and hw private data.
1555 * We use the wiphy priv data for both our ieee80211_local and for
1556 * the driver's private data
1557 *
1558 * In memory it'll be like this:
1559 *
1560 * +-------------------------+
1561 * | struct wiphy |
1562 * +-------------------------+
1563 * | struct ieee80211_local |
1564 * +-------------------------+
1565 * | driver's private data |
1566 * +-------------------------+
1567 *
1568 */
1569 priv_size = ((sizeof(struct ieee80211_local) +
1570 NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
1571 priv_data_len;
1572
1573 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
1574
1575 if (!wiphy)
1576 return NULL;
1577
1578 wiphy->privid = mac80211_wiphy_privid;
1579
1580 local = wiphy_priv(wiphy);
1581 local->hw.wiphy = wiphy;
1582
1583 local->hw.priv = (char *)local +
1584 ((sizeof(struct ieee80211_local) +
1585 NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
1586
4480f15c
JB		 1587 BUG_ON(!ops->tx);
1588 BUG_ON(!ops->config);
1589 BUG_ON(!ops->add_interface);
f0706e82
JB		 1590 local->ops = ops;
1591
1592 /* for now, mdev needs sub_if_data :/ */
1593 mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
1594 "wmaster%d", ether_setup);
1595 if (!mdev) {
1596 wiphy_free(wiphy);
1597 return NULL;
1598 }
1599
1600 sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
1601 mdev->ieee80211_ptr = &sdata->wdev;
1602 sdata->wdev.wiphy = wiphy;
1603
1604 local->hw.queues = 1; /* default */
1605
1606 local->mdev = mdev;
1607 local->rx_pre_handlers = ieee80211_rx_pre_handlers;
1608 local->rx_handlers = ieee80211_rx_handlers;
1609 local->tx_handlers = ieee80211_tx_handlers;
1610
1611 local->bridge_packets = 1;
1612
1613 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
1614 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
1615 local->short_retry_limit = 7;
1616 local->long_retry_limit = 4;
1617 local->hw.conf.radio_enabled = 1;
f0706e82
JB		 1618
1619 local->enabled_modes = (unsigned int) -1;
1620
1621 INIT_LIST_HEAD(&local->modes_list);
1622
1623 rwlock_init(&local->sub_if_lock);
1624 INIT_LIST_HEAD(&local->sub_if_list);
1625
1626 INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work);
1627 init_timer(&local->stat_timer);
1628 local->stat_timer.function = ieee80211_stat_refresh;
1629 local->stat_timer.data = (unsigned long) local;
1630 ieee80211_rx_bss_list_init(mdev);
1631
1632 sta_info_init(local);
1633
1634 mdev->hard_start_xmit = ieee80211_master_start_xmit;
1635 mdev->open = ieee80211_master_open;
1636 mdev->stop = ieee80211_master_stop;
1637 mdev->type = ARPHRD_IEEE80211;
1638 mdev->hard_header_parse = header_parse_80211;
1639
1640 sdata->type = IEEE80211_IF_TYPE_AP;
1641 sdata->dev = mdev;
1642 sdata->local = local;
1643 sdata->u.ap.force_unicast_rateidx = -1;
1644 sdata->u.ap.max_ratectrl_rateidx = -1;
1645 ieee80211_if_sdata_init(sdata);
1646 list_add_tail(&sdata->list, &local->sub_if_list);
1647
1648 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
1649 (unsigned long)local);
1650 tasklet_disable(&local->tx_pending_tasklet);
1651
1652 tasklet_init(&local->tasklet,
1653 ieee80211_tasklet_handler,
1654 (unsigned long) local);
1655 tasklet_disable(&local->tasklet);
1656
1657 skb_queue_head_init(&local->skb_queue);
1658 skb_queue_head_init(&local->skb_queue_unreliable);
1659
1660 return local_to_hw(local);
1661}
1662EXPORT_SYMBOL(ieee80211_alloc_hw);
1663
1664int ieee80211_register_hw(struct ieee80211_hw *hw)
1665{
1666 struct ieee80211_local *local = hw_to_local(hw);
1667 const char *name;
1668 int result;
1669
1670 result = wiphy_register(local->hw.wiphy);
1671 if (result < 0)
1672 return result;
1673
1674 name = wiphy_dev(local->hw.wiphy)->driver->name;
1675 local->hw.workqueue = create_singlethread_workqueue(name);
1676 if (!local->hw.workqueue) {
1677 result = -ENOMEM;
1678 goto fail_workqueue;
1679 }
1680
b306f453
JB		 1681 /*
1682 * The hardware needs headroom for sending the frame,
1683 * and we need some headroom for passing the frame to monitor
1684 * interfaces, but never both at the same time.
1685 */
33ccad35
JB		 1686 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
1687 sizeof(struct ieee80211_tx_status_rtap_hdr));
b306f453 1688
e9f207f0
JB		 1689 debugfs_hw_add(local);
1690
f0706e82
JB		 1691 local->hw.conf.beacon_int = 1000;
1692
1693 local->wstats_flags |= local->hw.max_rssi ?
1694 IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
1695 local->wstats_flags |= local->hw.max_signal ?
1696 IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
1697 local->wstats_flags |= local->hw.max_noise ?
1698 IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
1699 if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
1700 local->wstats_flags |= IW_QUAL_DBM;
1701
1702 result = sta_info_start(local);
1703 if (result < 0)
1704 goto fail_sta_info;
1705
1706 rtnl_lock();
1707 result = dev_alloc_name(local->mdev, local->mdev->name);
1708 if (result < 0)
1709 goto fail_dev;
1710
1711 memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
1712 SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
1713
1714 result = register_netdevice(local->mdev);
1715 if (result < 0)
1716 goto fail_dev;
1717
e9f207f0
JB		 1718 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
1719
f0706e82
JB		 1720 result = ieee80211_init_rate_ctrl_alg(local, NULL);
1721 if (result < 0) {
1722 printk(KERN_DEBUG "%s: Failed to initialize rate control "
1723 "algorithm\n", local->mdev->name);
1724 goto fail_rate;
1725 }
1726
1727 result = ieee80211_wep_init(local);
1728
1729 if (result < 0) {
1730 printk(KERN_DEBUG "%s: Failed to initialize wep\n",
1731 local->mdev->name);
1732 goto fail_wep;
1733 }
1734
1735 ieee80211_install_qdisc(local->mdev);
1736
1737 /* add one default STA interface */
1738 result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
1739 IEEE80211_IF_TYPE_STA);
1740 if (result)
1741 printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
1742 local->mdev->name);
1743
1744 local->reg_state = IEEE80211_DEV_REGISTERED;
1745 rtnl_unlock();
1746
1747 ieee80211_led_init(local);
1748
1749 return 0;
1750
1751fail_wep:
1752 rate_control_deinitialize(local);
1753fail_rate:
e9f207f0 1754 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
f0706e82
JB		 1755 unregister_netdevice(local->mdev);
1756fail_dev:
1757 rtnl_unlock();
1758 sta_info_stop(local);
1759fail_sta_info:
e9f207f0 1760 debugfs_hw_del(local);
f0706e82
JB		 1761 destroy_workqueue(local->hw.workqueue);
1762fail_workqueue:
1763 wiphy_unregister(local->hw.wiphy);
1764 return result;
1765}
1766EXPORT_SYMBOL(ieee80211_register_hw);
1767
1768int ieee80211_register_hwmode(struct ieee80211_hw *hw,
1769 struct ieee80211_hw_mode *mode)
1770{
1771 struct ieee80211_local *local = hw_to_local(hw);
1772 struct ieee80211_rate *rate;
1773 int i;
1774
1775 INIT_LIST_HEAD(&mode->list);
1776 list_add_tail(&mode->list, &local->modes_list);
1777
1778 local->hw_modes |= (1 << mode->mode);
1779 for (i = 0; i < mode->num_rates; i++) {
1780 rate = &(mode->rates[i]);
1781 rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate;
1782 }
1783 ieee80211_prepare_rates(local, mode);
1784
1785 if (!local->oper_hw_mode) {
1786 /* Default to this mode */
1787 local->hw.conf.phymode = mode->mode;
1788 local->oper_hw_mode = local->scan_hw_mode = mode;
1789 local->oper_channel = local->scan_channel = &mode->channels[0];
1790 local->hw.conf.mode = local->oper_hw_mode;
1791 local->hw.conf.chan = local->oper_channel;
1792 }
1793
1794 if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED))
fd8bacc9 1795 ieee80211_set_default_regdomain(mode);
f0706e82
JB		 1796
1797 return 0;
1798}
1799EXPORT_SYMBOL(ieee80211_register_hwmode);
1800
1801void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1802{
1803 struct ieee80211_local *local = hw_to_local(hw);
1804 struct ieee80211_sub_if_data *sdata, *tmp;
1805 struct list_head tmp_list;
1806 int i;
1807
1808 tasklet_kill(&local->tx_pending_tasklet);
1809 tasklet_kill(&local->tasklet);
1810
1811 rtnl_lock();
1812
1813 BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED);
1814
1815 local->reg_state = IEEE80211_DEV_UNREGISTERED;
1816 if (local->apdev)
1817 ieee80211_if_del_mgmt(local);
1818
1819 write_lock_bh(&local->sub_if_lock);
1820 list_replace_init(&local->sub_if_list, &tmp_list);
1821 write_unlock_bh(&local->sub_if_lock);
1822
1823 list_for_each_entry_safe(sdata, tmp, &tmp_list, list)
1824 __ieee80211_if_del(local, sdata);
1825
1826 rtnl_unlock();
1827
1828 if (local->stat_time)
1829 del_timer_sync(&local->stat_timer);
1830
1831 ieee80211_rx_bss_list_deinit(local->mdev);
1832 ieee80211_clear_tx_pending(local);
1833 sta_info_stop(local);
1834 rate_control_deinitialize(local);
e9f207f0 1835 debugfs_hw_del(local);
f0706e82
JB		 1836
1837 for (i = 0; i < NUM_IEEE80211_MODES; i++) {
1838 kfree(local->supp_rates[i]);
1839 kfree(local->basic_rates[i]);
1840 }
1841
1842 if (skb_queue_len(&local->skb_queue)
1843 || skb_queue_len(&local->skb_queue_unreliable))
1844 printk(KERN_WARNING "%s: skb_queue not empty\n",
1845 local->mdev->name);
1846 skb_queue_purge(&local->skb_queue);
1847 skb_queue_purge(&local->skb_queue_unreliable);
1848
1849 destroy_workqueue(local->hw.workqueue);
1850 wiphy_unregister(local->hw.wiphy);
1851 ieee80211_wep_free(local);
1852 ieee80211_led_exit(local);
1853}
1854EXPORT_SYMBOL(ieee80211_unregister_hw);
1855
1856void ieee80211_free_hw(struct ieee80211_hw *hw)
1857{
1858 struct ieee80211_local *local = hw_to_local(hw);
1859
1860 ieee80211_if_free(local->mdev);
1861 wiphy_free(local->hw.wiphy);
1862}
1863EXPORT_SYMBOL(ieee80211_free_hw);
1864
1865void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
1866{
1867 struct ieee80211_local *local = hw_to_local(hw);
1868
1869 if (test_and_clear_bit(IEEE80211_LINK_STATE_XOFF,
1870 &local->state[queue])) {
1871 if (test_bit(IEEE80211_LINK_STATE_PENDING,
1872 &local->state[queue]))
1873 tasklet_schedule(&local->tx_pending_tasklet);
1874 else
1875 if (!ieee80211_qdisc_installed(local->mdev)) {
1876 if (queue == 0)
1877 netif_wake_queue(local->mdev);
1878 } else
1879 __netif_schedule(local->mdev);
1880 }
1881}
1882EXPORT_SYMBOL(ieee80211_wake_queue);
1883
1884void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
1885{
1886 struct ieee80211_local *local = hw_to_local(hw);
1887
1888 if (!ieee80211_qdisc_installed(local->mdev) && queue == 0)
1889 netif_stop_queue(local->mdev);
1890 set_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]);
1891}
1892EXPORT_SYMBOL(ieee80211_stop_queue);
1893
1894void ieee80211_start_queues(struct ieee80211_hw *hw)
1895{
1896 struct ieee80211_local *local = hw_to_local(hw);
1897 int i;
1898
1899 for (i = 0; i < local->hw.queues; i++)
1900 clear_bit(IEEE80211_LINK_STATE_XOFF, &local->state[i]);
1901 if (!ieee80211_qdisc_installed(local->mdev))
1902 netif_start_queue(local->mdev);
1903}
1904EXPORT_SYMBOL(ieee80211_start_queues);
1905
1906void ieee80211_stop_queues(struct ieee80211_hw *hw)
1907{
1908 int i;
1909
1910 for (i = 0; i < hw->queues; i++)
1911 ieee80211_stop_queue(hw, i);
1912}
1913EXPORT_SYMBOL(ieee80211_stop_queues);
1914
1915void ieee80211_wake_queues(struct ieee80211_hw *hw)
1916{
1917 int i;
1918
1919 for (i = 0; i < hw->queues; i++)
1920 ieee80211_wake_queue(hw, i);
1921}
1922EXPORT_SYMBOL(ieee80211_wake_queues);
1923
1924struct net_device_stats *ieee80211_dev_stats(struct net_device *dev)
1925{
1926 struct ieee80211_sub_if_data *sdata;
1927 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1928 return &sdata->stats;
1929}
1930
1931static int __init ieee80211_init(void)
1932{
1933 struct sk_buff *skb;
1934 int ret;
1935
1936 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
1937
1938 ret = ieee80211_wme_register();
1939 if (ret) {
1940 printk(KERN_DEBUG "ieee80211_init: failed to "
1941 "initialize WME (err=%d)\n", ret);
1942 return ret;
1943 }
1944
e9f207f0 1945 ieee80211_debugfs_netdev_init();
fd8bacc9 1946 ieee80211_regdomain_init();
e9f207f0 1947
f0706e82
JB		 1948 return 0;
1949}
1950
1951
1952static void __exit ieee80211_exit(void)
1953{
1954 ieee80211_wme_unregister();
e9f207f0 1955 ieee80211_debugfs_netdev_exit();
f0706e82
JB		 1956}
1957
1958
ca9938fe 1959subsys_initcall(ieee80211_init);
f0706e82
JB		 1960module_exit(ieee80211_exit);
1961
1962MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1963MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)