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b43: N-PHY: improve 2055 radio initialization
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / ath / carl9170 / carl9170.h
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fe8ee9ad
CL		 1/*
2 * Atheros CARL9170 driver
3 *
4 * Driver specific definitions
5 *
6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
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 as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; see the file COPYING. If not, see
21 * http://www.gnu.org/licenses/.
22 *
23 * This file incorporates work covered by the following copyright and
24 * permission notice:
25 * Copyright (c) 2007-2008 Atheros Communications, Inc.
26 *
27 * Permission to use, copy, modify, and/or distribute this software for any
28 * purpose with or without fee is hereby granted, provided that the above
29 * copyright notice and this permission notice appear in all copies.
30 *
31 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
32 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
33 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
34 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
35 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
36 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
37 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
38 */
39#ifndef __CARL9170_H
40#define __CARL9170_H
41
42#include <linux/kernel.h>
43#include <linux/firmware.h>
44#include <linux/completion.h>
45#include <linux/spinlock.h>
46#include <net/cfg80211.h>
47#include <net/mac80211.h>
48#include <linux/usb.h>
49#ifdef CONFIG_CARL9170_LEDS
50#include <linux/leds.h>
51#endif /* CONFIG_CARL170_LEDS */
52#ifdef CONFIG_CARL9170_WPC
53#include <linux/input.h>
54#endif /* CONFIG_CARL9170_WPC */
55#include "eeprom.h"
56#include "wlan.h"
57#include "hw.h"
58#include "fwdesc.h"
59#include "fwcmd.h"
60#include "../regd.h"
61
62#ifdef CONFIG_CARL9170_DEBUGFS
63#include "debug.h"
64#endif /* CONFIG_CARL9170_DEBUGFS */
65
66#define CARL9170FW_NAME "carl9170-1.fw"
67
68#define PAYLOAD_MAX (CARL9170_MAX_CMD_LEN / 4 - 1)
69
70enum carl9170_rf_init_mode {
71 CARL9170_RFI_NONE,
72 CARL9170_RFI_WARM,
73 CARL9170_RFI_COLD,
74};
75
76#define CARL9170_MAX_RX_BUFFER_SIZE 8192
77
78enum carl9170_device_state {
79 CARL9170_UNKNOWN_STATE,
80 CARL9170_STOPPED,
81 CARL9170_IDLE,
82 CARL9170_STARTED,
83};
84
85#define CARL9170_NUM_TID 16
86#define WME_BA_BMP_SIZE 64
87#define CARL9170_TX_USER_RATE_TRIES 3
88
89#define WME_AC_BE 2
90#define WME_AC_BK 3
91#define WME_AC_VI 1
92#define WME_AC_VO 0
93
94#define TID_TO_WME_AC(_tid) \
95 ((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \
96 (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \
97 (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \
98 WME_AC_VO)
99
100#define SEQ_DIFF(_start, _seq) \
101 (((_start) - (_seq)) & 0x0fff)
102#define SEQ_PREV(_seq) \
103 (((_seq) - 1) & 0x0fff)
104#define SEQ_NEXT(_seq) \
105 (((_seq) + 1) & 0x0fff)
106#define BAW_WITHIN(_start, _bawsz, _seqno) \
107 ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
108
109enum carl9170_tid_state {
110 CARL9170_TID_STATE_INVALID,
111 CARL9170_TID_STATE_KILLED,
112 CARL9170_TID_STATE_SHUTDOWN,
113 CARL9170_TID_STATE_SUSPEND,
114 CARL9170_TID_STATE_PROGRESS,
115 CARL9170_TID_STATE_IDLE,
116 CARL9170_TID_STATE_XMIT,
117};
118
119#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
120#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
121#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
122
123struct carl9170_sta_tid {
124 /* must be the first entry! */
125 struct list_head list;
126
127 /* temporary list for RCU unlink procedure */
128 struct list_head tmp_list;
129
130 /* lock for the following data structures */
131 spinlock_t lock;
132
133 unsigned int counter;
134 enum carl9170_tid_state state;
135 u8 tid; /* TID number ( 0 - 15 ) */
136 u16 max; /* max. AMPDU size */
137
138 u16 snx; /* awaiting _next_ frame */
139 u16 hsn; /* highest _queued_ sequence */
140 u16 bsn; /* base of the tx/agg bitmap */
141 unsigned long bitmap[CARL9170_BAW_SIZE];
142
143 /* Preaggregation reorder queue */
144 struct sk_buff_head queue;
145};
146
147#define CARL9170_QUEUE_TIMEOUT 256
148#define CARL9170_BUMP_QUEUE 1000
149#define CARL9170_TX_TIMEOUT 2500
150#define CARL9170_JANITOR_DELAY 128
151#define CARL9170_QUEUE_STUCK_TIMEOUT 5500
152
153#define CARL9170_NUM_TX_AGG_MAX 30
154
155/*
156 * Tradeoff between stability/latency and speed.
157 *
158 * AR9170_TXQ_DEPTH is devised by dividing the amount of available
159 * tx buffers with the size of a full ethernet frame + overhead.
160 *
161 * Naturally: The higher the limit, the faster the device CAN send.
162 * However, even a slight over-commitment at the wrong time and the
163 * hardware is doomed to send all already-queued frames at suboptimal
164 * rates. This in turn leads to an enourmous amount of unsuccessful
165 * retries => Latency goes up, whereas the throughput goes down. CRASH!
166 */
167#define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2)
168#define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH)
169
170struct carl9170_tx_queue_stats {
171 unsigned int count;
172 unsigned int limit;
173 unsigned int len;
174};
175
176struct carl9170_vif {
177 unsigned int id;
178 struct ieee80211_vif *vif;
179};
180
181struct carl9170_vif_info {
182 struct list_head list;
183 bool active;
184 unsigned int id;
185 struct sk_buff *beacon;
186 bool enable_beacon;
187};
188
189#define AR9170_NUM_RX_URBS 16
190#define AR9170_NUM_RX_URBS_MUL 2
191#define AR9170_NUM_TX_URBS 8
192#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
193
194enum carl9170_device_features {
195 CARL9170_WPS_BUTTON = BIT(0),
196 CARL9170_ONE_LED = BIT(1),
197};
198
199#ifdef CONFIG_CARL9170_LEDS
200struct ar9170;
201
202struct carl9170_led {
203 struct ar9170 *ar;
204 struct led_classdev l;
205 char name[32];
206 unsigned int toggled;
207 bool last_state;
208 bool registered;
209};
210#endif /* CONFIG_CARL9170_LEDS */
211
212enum carl9170_restart_reasons {
213 CARL9170_RR_NO_REASON = 0,
214 CARL9170_RR_FATAL_FIRMWARE_ERROR,
215 CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
216 CARL9170_RR_WATCHDOG,
217 CARL9170_RR_STUCK_TX,
218 CARL9170_RR_SLOW_SYSTEM,
219 CARL9170_RR_COMMAND_TIMEOUT,
220 CARL9170_RR_TOO_MANY_PHY_ERRORS,
221 CARL9170_RR_LOST_RSP,
222 CARL9170_RR_INVALID_RSP,
223 CARL9170_RR_USER_REQUEST,
224
225 __CARL9170_RR_LAST,
226};
227
228enum carl9170_erp_modes {
229 CARL9170_ERP_INVALID,
230 CARL9170_ERP_AUTO,
231 CARL9170_ERP_MAC80211,
232 CARL9170_ERP_OFF,
233 CARL9170_ERP_CTS,
234 CARL9170_ERP_RTS,
235 __CARL9170_ERP_NUM,
236};
237
238struct ar9170 {
239 struct ath_common common;
240 struct ieee80211_hw *hw;
241 struct mutex mutex;
242 enum carl9170_device_state state;
243 spinlock_t state_lock;
244 enum carl9170_restart_reasons last_reason;
245 bool registered;
246
247 /* USB */
248 struct usb_device *udev;
249 struct usb_interface *intf;
250 struct usb_anchor rx_anch;
251 struct usb_anchor rx_work;
252 struct usb_anchor rx_pool;
253 struct usb_anchor tx_wait;
254 struct usb_anchor tx_anch;
255 struct usb_anchor tx_cmd;
256 struct usb_anchor tx_err;
257 struct tasklet_struct usb_tasklet;
258 atomic_t tx_cmd_urbs;
259 atomic_t tx_anch_urbs;
260 atomic_t rx_anch_urbs;
261 atomic_t rx_work_urbs;
262 atomic_t rx_pool_urbs;
263 kernel_ulong_t features;
264
265 /* firmware settings */
266 struct completion fw_load_wait;
267 struct completion fw_boot_wait;
268 struct {
269 const struct carl9170fw_desc_head *desc;
270 const struct firmware *fw;
271 unsigned int offset;
272 unsigned int address;
273 unsigned int cmd_bufs;
274 unsigned int api_version;
275 unsigned int vif_num;
276 unsigned int err_counter;
277 unsigned int bug_counter;
278 u32 beacon_addr;
279 unsigned int beacon_max_len;
280 bool rx_stream;
281 bool tx_stream;
5c895691 282 bool rx_filter;
fe8ee9ad
CL		 283 unsigned int mem_blocks;
284 unsigned int mem_block_size;
285 unsigned int rx_size;
286 } fw;
287
288 /* reset / stuck frames/queue detection */
289 struct work_struct restart_work;
290 unsigned int restart_counter;
291 unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
292 unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
293 bool needs_full_reset;
294 atomic_t pending_restarts;
295
296 /* interface mode settings */
297 struct list_head vif_list;
298 unsigned long vif_bitmap;
299 unsigned int vifs;
300 struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
301
302 /* beaconing */
303 spinlock_t beacon_lock;
304 unsigned int global_pretbtt;
305 unsigned int global_beacon_int;
306 struct carl9170_vif_info *beacon_iter;
307 unsigned int beacon_enabled;
308
309 /* cryptographic engine */
310 u64 usedkeys;
311 bool rx_software_decryption;
312 bool disable_offload;
313
314 /* filter settings */
315 u64 cur_mc_hash;
316 u32 cur_filter;
317 unsigned int filter_state;
5c895691 318 unsigned int rx_filter_caps;
fe8ee9ad
CL		 319 bool sniffer_enabled;
320
321 /* MAC */
322 enum carl9170_erp_modes erp_mode;
323
324 /* PHY */
325 struct ieee80211_channel *channel;
9adc9e0f 326 int noise[4];
fe8ee9ad
CL		 327 unsigned int chan_fail;
328 unsigned int total_chan_fail;
329 u8 heavy_clip;
73576110 330 u8 ht_settings;
fe8ee9ad
CL		 331
332 /* power calibration data */
333 u8 power_5G_leg[4];
334 u8 power_2G_cck[4];
335 u8 power_2G_ofdm[4];
336 u8 power_5G_ht20[8];
337 u8 power_5G_ht40[8];
338 u8 power_2G_ht20[8];
339 u8 power_2G_ht40[8];
340
341#ifdef CONFIG_CARL9170_LEDS
342 /* LED */
343 struct delayed_work led_work;
344 struct carl9170_led leds[AR9170_NUM_LEDS];
345#endif /* CONFIG_CARL9170_LEDS */
346
347 /* qos queue settings */
348 spinlock_t tx_stats_lock;
349 struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
350 struct ieee80211_tx_queue_params edcf[5];
351 struct completion tx_flush;
352
353 /* CMD */
354 int cmd_seq;
355 int readlen;
356 u8 *readbuf;
357 spinlock_t cmd_lock;
358 struct completion cmd_wait;
359 union {
360 __le32 cmd_buf[PAYLOAD_MAX + 1];
361 struct carl9170_cmd cmd;
362 struct carl9170_rsp rsp;
363 };
364
365 /* statistics */
366 unsigned int tx_dropped;
367 unsigned int tx_ack_failures;
368 unsigned int tx_fcs_errors;
fe8ee9ad
CL		 369 unsigned int rx_dropped;
370
371 /* EEPROM */
372 struct ar9170_eeprom eeprom;
373
374 /* tx queuing */
375 struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
376 struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
377 struct delayed_work tx_janitor;
378 unsigned long tx_janitor_last_run;
379 bool tx_schedule;
380
381 /* tx ampdu */
382 struct work_struct ampdu_work;
383 spinlock_t tx_ampdu_list_lock;
384 struct carl9170_sta_tid *tx_ampdu_iter;
385 struct list_head tx_ampdu_list;
386 atomic_t tx_ampdu_upload;
387 atomic_t tx_ampdu_scheduler;
388 atomic_t tx_total_pending;
389 atomic_t tx_total_queued;
390 unsigned int tx_ampdu_list_len;
391 int current_density;
392 int current_factor;
393 bool tx_ampdu_schedule;
394
395 /* internal memory management */
396 spinlock_t mem_lock;
397 unsigned long *mem_bitmap;
398 atomic_t mem_free_blocks;
399 atomic_t mem_allocs;
400
401 /* rxstream mpdu merge */
402 struct ar9170_rx_head rx_plcp;
403 bool rx_has_plcp;
404 struct sk_buff *rx_failover;
405 int rx_failover_missing;
406
407#ifdef CONFIG_CARL9170_WPC
408 struct {
409 bool pbc_state;
410 struct input_dev *pbc;
411 char name[32];
412 char phys[32];
413 } wps;
414#endif /* CONFIG_CARL9170_WPC */
415
416#ifdef CONFIG_CARL9170_DEBUGFS
417 struct carl9170_debug debug;
418 struct dentry *debug_dir;
419#endif /* CONFIG_CARL9170_DEBUGFS */
420
421 /* PSM */
422 struct work_struct ps_work;
423 struct {
424 unsigned int dtim_counter;
425 unsigned long last_beacon;
426 unsigned long last_action;
427 unsigned long last_slept;
428 unsigned int sleep_ms;
429 unsigned int off_override;
430 bool state;
431 } ps;
432};
433
434enum carl9170_ps_off_override_reasons {
435 PS_OFF_VIF = BIT(0),
436 PS_OFF_BCN = BIT(1),
437 PS_OFF_5GHZ = BIT(2),
438};
439
440struct carl9170_ba_stats {
441 u8 ampdu_len;
442 u8 ampdu_ack_len;
443 bool clear;
444};
445
446struct carl9170_sta_info {
447 bool ht_sta;
448 unsigned int ampdu_max_len;
449 struct carl9170_sta_tid *agg[CARL9170_NUM_TID];
450 struct carl9170_ba_stats stats[CARL9170_NUM_TID];
451};
452
453struct carl9170_tx_info {
454 unsigned long timeout;
455 struct ar9170 *ar;
456 struct kref ref;
457};
458
459#define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s))
460#define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED))
461#define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE))
462#define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED))
463
464static inline void __carl9170_set_state(struct ar9170 *ar,
465 enum carl9170_device_state newstate)
466{
467 ar->state = newstate;
468}
469
470static inline void carl9170_set_state(struct ar9170 *ar,
471 enum carl9170_device_state newstate)
472{
473 unsigned long flags;
474
475 spin_lock_irqsave(&ar->state_lock, flags);
476 __carl9170_set_state(ar, newstate);
477 spin_unlock_irqrestore(&ar->state_lock, flags);
478}
479
480static inline void carl9170_set_state_when(struct ar9170 *ar,
481 enum carl9170_device_state min, enum carl9170_device_state newstate)
482{
483 unsigned long flags;
484
485 spin_lock_irqsave(&ar->state_lock, flags);
486 if (CHK_DEV_STATE(ar, min))
487 __carl9170_set_state(ar, newstate);
488 spin_unlock_irqrestore(&ar->state_lock, flags);
489}
490
491/* exported interface */
492void *carl9170_alloc(size_t priv_size);
493int carl9170_register(struct ar9170 *ar);
494void carl9170_unregister(struct ar9170 *ar);
495void carl9170_free(struct ar9170 *ar);
496void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
497void carl9170_ps_check(struct ar9170 *ar);
498
499/* USB back-end */
500int carl9170_usb_open(struct ar9170 *ar);
501void carl9170_usb_stop(struct ar9170 *ar);
502void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
503void carl9170_usb_handle_tx_err(struct ar9170 *ar);
504int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
505 u32 plen, void *payload, u32 rlen, void *resp);
506int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
507 const bool free_buf);
508int carl9170_usb_restart(struct ar9170 *ar);
509void carl9170_usb_reset(struct ar9170 *ar);
510
511/* MAC */
512int carl9170_init_mac(struct ar9170 *ar);
513int carl9170_set_qos(struct ar9170 *ar);
514int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
515int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
516 const u8 *mac);
517int carl9170_set_operating_mode(struct ar9170 *ar);
518int carl9170_set_beacon_timers(struct ar9170 *ar);
519int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
520int carl9170_set_rts_cts_rate(struct ar9170 *ar);
521int carl9170_set_ampdu_settings(struct ar9170 *ar);
522int carl9170_set_slot_time(struct ar9170 *ar);
523int carl9170_set_mac_rates(struct ar9170 *ar);
524int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
525int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
526int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
527 const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
528int carl9170_disable_key(struct ar9170 *ar, const u8 id);
529
530/* RX */
531void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
532void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
533
534/* TX */
535int carl9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
536void carl9170_tx_janitor(struct work_struct *work);
537void carl9170_tx_process_status(struct ar9170 *ar,
538 const struct carl9170_rsp *cmd);
539void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
540 const bool success);
541void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
542void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
543void carl9170_tx_scheduler(struct ar9170 *ar);
544void carl9170_tx_get_skb(struct sk_buff *skb);
545int carl9170_tx_put_skb(struct sk_buff *skb);
546
547/* LEDs */
548#ifdef CONFIG_CARL9170_LEDS
549int carl9170_led_register(struct ar9170 *ar);
550void carl9170_led_unregister(struct ar9170 *ar);
551#endif /* CONFIG_CARL9170_LEDS */
552int carl9170_led_init(struct ar9170 *ar);
553int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
554
555/* PHY / RF */
556int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
557 enum nl80211_channel_type bw, enum carl9170_rf_init_mode rfi);
558int carl9170_get_noisefloor(struct ar9170 *ar);
559
560/* FW */
561int carl9170_parse_firmware(struct ar9170 *ar);
562int carl9170_fw_fix_eeprom(struct ar9170 *ar);
563
564extern struct ieee80211_rate __carl9170_ratetable[];
565extern int modparam_noht;
566
567static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
568{
569 return container_of(carl_vif, struct ar9170,
570 vif_priv[carl_vif->id]);
571}
572
573static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
574{
575 return (void *)((struct _carl9170_tx_superframe *)
576 skb->data)->frame_data;
577}
578
579static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
580{
581 return le16_to_cpu(hdr->seq_ctrl) >> 4;
582}
583
584static inline u16 carl9170_get_seq(struct sk_buff *skb)
585{
586 return get_seq_h(carl9170_get_hdr(skb));
587}
588
589static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
590{
591 return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
592}
593
594static inline u16 carl9170_get_tid(struct sk_buff *skb)
595{
596 return get_tid_h(carl9170_get_hdr(skb));
597}
598
599static inline struct ieee80211_vif *
600carl9170_get_vif(struct carl9170_vif_info *priv)
601{
602 return container_of((void *)priv, struct ieee80211_vif, drv_priv);
603}
604
605/* Protected by ar->mutex or RCU */
606static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
607{
608 struct carl9170_vif_info *cvif;
609
610 list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
611 if (cvif->active)
612 return carl9170_get_vif(cvif);
613 }
614
615 return NULL;
616}
617
618static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
619{
620 bool ret;
621
622 rcu_read_lock();
623 ret = (carl9170_get_main_vif(ar) == vif);
624 rcu_read_unlock();
625 return ret;
626}
627
628#endif /* __CARL9170_H */
kernel source for telekom puls (alcatel/mediatek)