summaryrefslogtreecommitdiff
path: root/net/mac80211/debugfs.c
blob: 98310188f330f4ba844531de88d0143d4580e2d6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
// SPDX-License-Identifier: GPL-2.0-only
/*
 * mac80211 debugfs for wireless PHYs
 *
 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
 * Copyright 2013-2014  Intel Mobile Communications GmbH
 * Copyright (C) 2018 - 2019, 2021-2024 Intel Corporation
 */

#include <linux/debugfs.h>
#include <linux/rtnetlink.h>
#include <linux/vmalloc.h>
#include "ieee80211_i.h"
#include "driver-ops.h"
#include "rate.h"
#include "debugfs.h"

#define DEBUGFS_FORMAT_BUFFER_SIZE 100

int mac80211_format_buffer(char __user *userbuf, size_t count,
				  loff_t *ppos, char *fmt, ...)
{
	va_list args;
	char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
	int res;

	va_start(args, fmt);
	res = vscnprintf(buf, sizeof(buf), fmt, args);
	va_end(args);

	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}

#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...)			\
static ssize_t name## _read(struct file *file, char __user *userbuf,	\
			    size_t count, loff_t *ppos)			\
{									\
	struct ieee80211_local *local = file->private_data;		\
									\
	return mac80211_format_buffer(userbuf, count, ppos, 		\
				      fmt "\n", ##value);		\
}

#define DEBUGFS_READONLY_FILE_OPS(name)			\
static const struct file_operations name## _ops = {			\
	.read = name## _read,						\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
};

#define DEBUGFS_READONLY_FILE(name, fmt, value...)		\
	DEBUGFS_READONLY_FILE_FN(name, fmt, value)		\
	DEBUGFS_READONLY_FILE_OPS(name)

#define DEBUGFS_ADD(name)						\
	debugfs_create_file(#name, 0400, phyd, local, &name## _ops)

#define DEBUGFS_ADD_MODE(name, mode)					\
	debugfs_create_file(#name, mode, phyd, local, &name## _ops);


DEBUGFS_READONLY_FILE(hw_conf, "%x",
		      local->hw.conf.flags);
DEBUGFS_READONLY_FILE(user_power, "%d",
		      local->user_power_level);
DEBUGFS_READONLY_FILE(power, "%d",
		      local->hw.conf.power_level);
DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
		      local->total_ps_buffered);
DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
		      local->wep_iv & 0xffffff);
DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");

static ssize_t aqm_read(struct file *file,
			char __user *user_buf,
			size_t count,
			loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	struct fq *fq = &local->fq;
	char buf[200];
	int len = 0;

	spin_lock_bh(&local->fq.lock);
	rcu_read_lock();

	len = scnprintf(buf, sizeof(buf),
			"access name value\n"
			"R fq_flows_cnt %u\n"
			"R fq_backlog %u\n"
			"R fq_overlimit %u\n"
			"R fq_overmemory %u\n"
			"R fq_collisions %u\n"
			"R fq_memory_usage %u\n"
			"RW fq_memory_limit %u\n"
			"RW fq_limit %u\n"
			"RW fq_quantum %u\n",
			fq->flows_cnt,
			fq->backlog,
			fq->overmemory,
			fq->overlimit,
			fq->collisions,
			fq->memory_usage,
			fq->memory_limit,
			fq->limit,
			fq->quantum);

	rcu_read_unlock();
	spin_unlock_bh(&local->fq.lock);

	return simple_read_from_buffer(user_buf, count, ppos,
				       buf, len);
}

static ssize_t aqm_write(struct file *file,
			 const char __user *user_buf,
			 size_t count,
			 loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[100];

	if (count >= sizeof(buf))
		return -EINVAL;

	if (copy_from_user(buf, user_buf, count))
		return -EFAULT;

	if (count && buf[count - 1] == '\n')
		buf[count - 1] = '\0';
	else
		buf[count] = '\0';

	if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
		return count;
	else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1)
		return count;
	else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
		return count;

	return -EINVAL;
}

static const struct file_operations aqm_ops = {
	.write = aqm_write,
	.read = aqm_read,
	.open = simple_open,
	.llseek = default_llseek,
};

static ssize_t airtime_flags_read(struct file *file,
				  char __user *user_buf,
				  size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[128] = {}, *pos, *end;

	pos = buf;
	end = pos + sizeof(buf) - 1;

	if (local->airtime_flags & AIRTIME_USE_TX)
		pos += scnprintf(pos, end - pos, "AIRTIME_TX\t(%lx)\n",
				 AIRTIME_USE_TX);
	if (local->airtime_flags & AIRTIME_USE_RX)
		pos += scnprintf(pos, end - pos, "AIRTIME_RX\t(%lx)\n",
				 AIRTIME_USE_RX);

	return simple_read_from_buffer(user_buf, count, ppos, buf,
				       strlen(buf));
}

static ssize_t airtime_flags_write(struct file *file,
				   const char __user *user_buf,
				   size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[16];

	if (count >= sizeof(buf))
		return -EINVAL;

	if (copy_from_user(buf, user_buf, count))
		return -EFAULT;

	if (count && buf[count - 1] == '\n')
		buf[count - 1] = '\0';
	else
		buf[count] = '\0';

	if (kstrtou16(buf, 0, &local->airtime_flags))
		return -EINVAL;

	return count;
}

static const struct file_operations airtime_flags_ops = {
	.write = airtime_flags_write,
	.read = airtime_flags_read,
	.open = simple_open,
	.llseek = default_llseek,
};

static ssize_t aql_pending_read(struct file *file,
				char __user *user_buf,
				size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[400];
	int len = 0;

	len = scnprintf(buf, sizeof(buf),
			"AC     AQL pending\n"
			"VO     %u us\n"
			"VI     %u us\n"
			"BE     %u us\n"
			"BK     %u us\n"
			"total  %u us\n",
			atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VO]),
			atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VI]),
			atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BE]),
			atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BK]),
			atomic_read(&local->aql_total_pending_airtime));
	return simple_read_from_buffer(user_buf, count, ppos,
				       buf, len);
}

static const struct file_operations aql_pending_ops = {
	.read = aql_pending_read,
	.open = simple_open,
	.llseek = default_llseek,
};

static ssize_t aql_txq_limit_read(struct file *file,
				  char __user *user_buf,
				  size_t count,
				  loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[400];
	int len = 0;

	len = scnprintf(buf, sizeof(buf),
			"AC	AQL limit low	AQL limit high\n"
			"VO	%u		%u\n"
			"VI	%u		%u\n"
			"BE	%u		%u\n"
			"BK	%u		%u\n",
			local->aql_txq_limit_low[IEEE80211_AC_VO],
			local->aql_txq_limit_high[IEEE80211_AC_VO],
			local->aql_txq_limit_low[IEEE80211_AC_VI],
			local->aql_txq_limit_high[IEEE80211_AC_VI],
			local->aql_txq_limit_low[IEEE80211_AC_BE],
			local->aql_txq_limit_high[IEEE80211_AC_BE],
			local->aql_txq_limit_low[IEEE80211_AC_BK],
			local->aql_txq_limit_high[IEEE80211_AC_BK]);
	return simple_read_from_buffer(user_buf, count, ppos,
				       buf, len);
}

static ssize_t aql_txq_limit_write(struct file *file,
				   const char __user *user_buf,
				   size_t count,
				   loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[100];
	u32 ac, q_limit_low, q_limit_high, q_limit_low_old, q_limit_high_old;
	struct sta_info *sta;

	if (count >= sizeof(buf))
		return -EINVAL;

	if (copy_from_user(buf, user_buf, count))
		return -EFAULT;

	if (count && buf[count - 1] == '\n')
		buf[count - 1] = '\0';
	else
		buf[count] = '\0';

	if (sscanf(buf, "%u %u %u", &ac, &q_limit_low, &q_limit_high) != 3)
		return -EINVAL;

	if (ac >= IEEE80211_NUM_ACS)
		return -EINVAL;

	q_limit_low_old = local->aql_txq_limit_low[ac];
	q_limit_high_old = local->aql_txq_limit_high[ac];

	wiphy_lock(local->hw.wiphy);
	local->aql_txq_limit_low[ac] = q_limit_low;
	local->aql_txq_limit_high[ac] = q_limit_high;

	list_for_each_entry(sta, &local->sta_list, list) {
		/* If a sta has customized queue limits, keep it */
		if (sta->airtime[ac].aql_limit_low == q_limit_low_old &&
		    sta->airtime[ac].aql_limit_high == q_limit_high_old) {
			sta->airtime[ac].aql_limit_low = q_limit_low;
			sta->airtime[ac].aql_limit_high = q_limit_high;
		}
	}
	wiphy_unlock(local->hw.wiphy);

	return count;
}

static const struct file_operations aql_txq_limit_ops = {
	.write = aql_txq_limit_write,
	.read = aql_txq_limit_read,
	.open = simple_open,
	.llseek = default_llseek,
};

static ssize_t aql_enable_read(struct file *file, char __user *user_buf,
			       size_t count, loff_t *ppos)
{
	char buf[3];
	int len;

	len = scnprintf(buf, sizeof(buf), "%d\n",
			!static_key_false(&aql_disable.key));

	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}

static ssize_t aql_enable_write(struct file *file, const char __user *user_buf,
				size_t count, loff_t *ppos)
{
	bool aql_disabled = static_key_false(&aql_disable.key);
	char buf[3];
	size_t len;

	if (count > sizeof(buf))
		return -EINVAL;

	if (copy_from_user(buf, user_buf, count))
		return -EFAULT;

	buf[sizeof(buf) - 1] = '\0';
	len = strlen(buf);
	if (len > 0 && buf[len - 1] == '\n')
		buf[len - 1] = 0;

	if (buf[0] == '0' && buf[1] == '\0') {
		if (!aql_disabled)
			static_branch_inc(&aql_disable);
	} else if (buf[0] == '1' && buf[1] == '\0') {
		if (aql_disabled)
			static_branch_dec(&aql_disable);
	} else {
		return -EINVAL;
	}

	return count;
}

static const struct file_operations aql_enable_ops = {
	.write = aql_enable_write,
	.read = aql_enable_read,
	.open = simple_open,
	.llseek = default_llseek,
};

static ssize_t force_tx_status_read(struct file *file,
				    char __user *user_buf,
				    size_t count,
				    loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[3];
	int len = 0;

	len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status);

	return simple_read_from_buffer(user_buf, count, ppos,
				       buf, len);
}

static ssize_t force_tx_status_write(struct file *file,
				     const char __user *user_buf,
				     size_t count,
				     loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[3];

	if (count >= sizeof(buf))
		return -EINVAL;

	if (copy_from_user(buf, user_buf, count))
		return -EFAULT;

	if (count && buf[count - 1] == '\n')
		buf[count - 1] = '\0';
	else
		buf[count] = '\0';

	if (buf[0] == '0' && buf[1] == '\0')
		local->force_tx_status = 0;
	else if (buf[0] == '1' && buf[1] == '\0')
		local->force_tx_status = 1;
	else
		return -EINVAL;

	return count;
}

static const struct file_operations force_tx_status_ops = {
	.write = force_tx_status_write,
	.read = force_tx_status_read,
	.open = simple_open,
	.llseek = default_llseek,
};

#ifdef CONFIG_PM
static ssize_t reset_write(struct file *file, const char __user *user_buf,
			   size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	int ret;

	rtnl_lock();
	wiphy_lock(local->hw.wiphy);
	__ieee80211_suspend(&local->hw, NULL);
	ret = __ieee80211_resume(&local->hw);
	wiphy_unlock(local->hw.wiphy);

	if (ret)
		cfg80211_shutdown_all_interfaces(local->hw.wiphy);

	rtnl_unlock();

	return count;
}

static const struct file_operations reset_ops = {
	.write = reset_write,
	.open = simple_open,
	.llseek = noop_llseek,
};
#endif

static const char *hw_flag_names[] = {
#define FLAG(F)	[IEEE80211_HW_##F] = #F
	FLAG(HAS_RATE_CONTROL),
	FLAG(RX_INCLUDES_FCS),
	FLAG(HOST_BROADCAST_PS_BUFFERING),
	FLAG(SIGNAL_UNSPEC),
	FLAG(SIGNAL_DBM),
	FLAG(NEED_DTIM_BEFORE_ASSOC),
	FLAG(SPECTRUM_MGMT),
	FLAG(AMPDU_AGGREGATION),
	FLAG(SUPPORTS_PS),
	FLAG(PS_NULLFUNC_STACK),
	FLAG(SUPPORTS_DYNAMIC_PS),
	FLAG(MFP_CAPABLE),
	FLAG(WANT_MONITOR_VIF),
	FLAG(NO_AUTO_VIF),
	FLAG(SW_CRYPTO_CONTROL),
	FLAG(SUPPORT_FAST_XMIT),
	FLAG(REPORTS_TX_ACK_STATUS),
	FLAG(CONNECTION_MONITOR),
	FLAG(QUEUE_CONTROL),
	FLAG(SUPPORTS_PER_STA_GTK),
	FLAG(AP_LINK_PS),
	FLAG(TX_AMPDU_SETUP_IN_HW),
	FLAG(SUPPORTS_RC_TABLE),
	FLAG(P2P_DEV_ADDR_FOR_INTF),
	FLAG(TIMING_BEACON_ONLY),
	FLAG(SUPPORTS_HT_CCK_RATES),
	FLAG(CHANCTX_STA_CSA),
	FLAG(SUPPORTS_CLONED_SKBS),
	FLAG(SINGLE_SCAN_ON_ALL_BANDS),
	FLAG(TDLS_WIDER_BW),
	FLAG(SUPPORTS_AMSDU_IN_AMPDU),
	FLAG(BEACON_TX_STATUS),
	FLAG(NEEDS_UNIQUE_STA_ADDR),
	FLAG(SUPPORTS_REORDERING_BUFFER),
	FLAG(USES_RSS),
	FLAG(TX_AMSDU),
	FLAG(TX_FRAG_LIST),
	FLAG(REPORTS_LOW_ACK),
	FLAG(SUPPORTS_TX_FRAG),
	FLAG(SUPPORTS_TDLS_BUFFER_STA),
	FLAG(DEAUTH_NEED_MGD_TX_PREP),
	FLAG(DOESNT_SUPPORT_QOS_NDP),
	FLAG(BUFF_MMPDU_TXQ),
	FLAG(SUPPORTS_VHT_EXT_NSS_BW),
	FLAG(STA_MMPDU_TXQ),
	FLAG(TX_STATUS_NO_AMPDU_LEN),
	FLAG(SUPPORTS_MULTI_BSSID),
	FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
	FLAG(AMPDU_KEYBORDER_SUPPORT),
	FLAG(SUPPORTS_TX_ENCAP_OFFLOAD),
	FLAG(SUPPORTS_RX_DECAP_OFFLOAD),
	FLAG(SUPPORTS_CONC_MON_RX_DECAP),
	FLAG(DETECTS_COLOR_COLLISION),
	FLAG(MLO_MCAST_MULTI_LINK_TX),
	FLAG(DISALLOW_PUNCTURING),
	FLAG(DISALLOW_PUNCTURING_5GHZ),
	FLAG(HANDLES_QUIET_CSA),
#undef FLAG
};

static ssize_t hwflags_read(struct file *file, char __user *user_buf,
			    size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
	char *buf = kzalloc(bufsz, GFP_KERNEL);
	char *pos = buf, *end = buf + bufsz - 1;
	ssize_t rv;
	int i;

	if (!buf)
		return -ENOMEM;

	/* fail compilation if somebody adds or removes
	 * a flag without updating the name array above
	 */
	BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);

	for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
		if (test_bit(i, local->hw.flags))
			pos += scnprintf(pos, end - pos, "%s\n",
					 hw_flag_names[i]);
	}

	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	kfree(buf);
	return rv;
}

static ssize_t misc_read(struct file *file, char __user *user_buf,
			 size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	/* Max len of each line is 16 characters, plus 9 for 'pending:\n' */
	size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
	char *buf;
	char *pos, *end;
	ssize_t rv;
	int i;
	int ln;

	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	pos = buf;
	end = buf + bufsz - 1;

	pos += scnprintf(pos, end - pos, "pending:\n");

	for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
		ln = skb_queue_len(&local->pending[i]);
		pos += scnprintf(pos, end - pos, "[%i] %d\n",
				 i, ln);
	}

	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	kfree(buf);
	return rv;
}

static ssize_t queues_read(struct file *file, char __user *user_buf,
			   size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	unsigned long flags;
	char buf[IEEE80211_MAX_QUEUES * 20];
	int q, res = 0;

	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	for (q = 0; q < local->hw.queues; q++)
		res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
				local->queue_stop_reasons[q],
				skb_queue_len(&local->pending[q]));
	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);

	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
}

DEBUGFS_READONLY_FILE_OPS(hwflags);
DEBUGFS_READONLY_FILE_OPS(queues);
DEBUGFS_READONLY_FILE_OPS(misc);

/* statistics stuff */

static ssize_t format_devstat_counter(struct ieee80211_local *local,
	char __user *userbuf,
	size_t count, loff_t *ppos,
	int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
			  int buflen))
{
	struct ieee80211_low_level_stats stats;
	char buf[20];
	int res;

	wiphy_lock(local->hw.wiphy);
	res = drv_get_stats(local, &stats);
	wiphy_unlock(local->hw.wiphy);
	if (res)
		return res;
	res = printvalue(&stats, buf, sizeof(buf));
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}

#define DEBUGFS_DEVSTATS_FILE(name)					\
static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
				 char *buf, int buflen)			\
{									\
	return scnprintf(buf, buflen, "%u\n", stats->name);		\
}									\
static ssize_t stats_ ##name## _read(struct file *file,			\
				     char __user *userbuf,		\
				     size_t count, loff_t *ppos)	\
{									\
	return format_devstat_counter(file->private_data,		\
				      userbuf,				\
				      count,				\
				      ppos,				\
				      print_devstats_##name);		\
}									\
									\
static const struct file_operations stats_ ##name## _ops = {		\
	.read = stats_ ##name## _read,					\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
};

#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
#define DEBUGFS_STATS_ADD(name)					\
	debugfs_create_u32(#name, 0400, statsd, &local->name);
#endif
#define DEBUGFS_DEVSTATS_ADD(name)					\
	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);

DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);

void debugfs_hw_add(struct ieee80211_local *local)
{
	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	struct dentry *statsd;

	if (!phyd)
		return;

	local->debugfs.keys = debugfs_create_dir("keys", phyd);

	DEBUGFS_ADD(total_ps_buffered);
	DEBUGFS_ADD(wep_iv);
	DEBUGFS_ADD(rate_ctrl_alg);
	DEBUGFS_ADD(queues);
	DEBUGFS_ADD(misc);
#ifdef CONFIG_PM
	DEBUGFS_ADD_MODE(reset, 0200);
#endif
	DEBUGFS_ADD(hwflags);
	DEBUGFS_ADD(user_power);
	DEBUGFS_ADD(power);
	DEBUGFS_ADD(hw_conf);
	DEBUGFS_ADD_MODE(force_tx_status, 0600);
	DEBUGFS_ADD_MODE(aql_enable, 0600);
	DEBUGFS_ADD(aql_pending);
	DEBUGFS_ADD_MODE(aqm, 0600);

	DEBUGFS_ADD_MODE(airtime_flags, 0600);

	DEBUGFS_ADD(aql_txq_limit);
	debugfs_create_u32("aql_threshold", 0600,
			   phyd, &local->aql_threshold);

	statsd = debugfs_create_dir("statistics", phyd);

#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
	DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
	DEBUGFS_STATS_ADD(dot11FailedCount);
	DEBUGFS_STATS_ADD(dot11RetryCount);
	DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
	DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
	DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
	DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
	DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
	DEBUGFS_STATS_ADD(tx_handlers_drop);
	DEBUGFS_STATS_ADD(tx_handlers_queued);
	DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
	DEBUGFS_STATS_ADD(rx_handlers_drop);
	DEBUGFS_STATS_ADD(rx_handlers_queued);
	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
	DEBUGFS_STATS_ADD(tx_expand_skb_head);
	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
	DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
	DEBUGFS_STATS_ADD(rx_handlers_fragments);
	DEBUGFS_STATS_ADD(tx_status_drop);
#endif
	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
}