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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * mac80211 debugfs for wireless PHYs
4 *
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright (C) 2018 - 2019, 2021 Intel Corporation
8 */
9
10#include <linux/debugfs.h>
11#include <linux/rtnetlink.h>
12#include <linux/vmalloc.h>
13#include "ieee80211_i.h"
14#include "driver-ops.h"
15#include "rate.h"
16#include "debugfs.h"
17
18#define DEBUGFS_FORMAT_BUFFER_SIZE 100
19
20int mac80211_format_buffer(char __user *userbuf, size_t count,
21 loff_t *ppos, char *fmt, ...)
22{
23 va_list args;
24 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
25 int res;
26
27 va_start(args, fmt);
28 res = vscnprintf(buf, sizeof(buf), fmt, args);
29 va_end(args);
30
31 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
32}
33
34#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
35static ssize_t name## _read(struct file *file, char __user *userbuf, \
36 size_t count, loff_t *ppos) \
37{ \
38 struct ieee80211_local *local = file->private_data; \
39 \
40 return mac80211_format_buffer(userbuf, count, ppos, \
41 fmt "\n", ##value); \
42}
43
44#define DEBUGFS_READONLY_FILE_OPS(name) \
45static const struct file_operations name## _ops = { \
46 .read = name## _read, \
47 .open = simple_open, \
48 .llseek = generic_file_llseek, \
49};
50
51#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
52 DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
53 DEBUGFS_READONLY_FILE_OPS(name)
54
55#define DEBUGFS_ADD(name) \
56 debugfs_create_file(#name, 0400, phyd, local, &name## _ops)
57
58#define DEBUGFS_ADD_MODE(name, mode) \
59 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
60
61
62DEBUGFS_READONLY_FILE(hw_conf, "%x",
63 local->hw.conf.flags);
64DEBUGFS_READONLY_FILE(user_power, "%d",
65 local->user_power_level);
66DEBUGFS_READONLY_FILE(power, "%d",
67 local->hw.conf.power_level);
68DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
69 local->total_ps_buffered);
70DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
71 local->wep_iv & 0xffffff);
72DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
73 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
74
75static ssize_t aqm_read(struct file *file,
76 char __user *user_buf,
77 size_t count,
78 loff_t *ppos)
79{
80 struct ieee80211_local *local = file->private_data;
81 struct fq *fq = &local->fq;
82 char buf[200];
83 int len = 0;
84
85 spin_lock_bh(&local->fq.lock);
86 rcu_read_lock();
87
88 len = scnprintf(buf, sizeof(buf),
89 "access name value\n"
90 "R fq_flows_cnt %u\n"
91 "R fq_backlog %u\n"
92 "R fq_overlimit %u\n"
93 "R fq_overmemory %u\n"
94 "R fq_collisions %u\n"
95 "R fq_memory_usage %u\n"
96 "RW fq_memory_limit %u\n"
97 "RW fq_limit %u\n"
98 "RW fq_quantum %u\n",
99 fq->flows_cnt,
100 fq->backlog,
101 fq->overmemory,
102 fq->overlimit,
103 fq->collisions,
104 fq->memory_usage,
105 fq->memory_limit,
106 fq->limit,
107 fq->quantum);
108
109 rcu_read_unlock();
110 spin_unlock_bh(&local->fq.lock);
111
112 return simple_read_from_buffer(user_buf, count, ppos,
113 buf, len);
114}
115
116static ssize_t aqm_write(struct file *file,
117 const char __user *user_buf,
118 size_t count,
119 loff_t *ppos)
120{
121 struct ieee80211_local *local = file->private_data;
122 char buf[100];
123
124 if (count >= sizeof(buf))
125 return -EINVAL;
126
127 if (copy_from_user(buf, user_buf, count))
128 return -EFAULT;
129
130 if (count && buf[count - 1] == '\n')
131 buf[count - 1] = '\0';
132 else
133 buf[count] = '\0';
134
135 if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
136 return count;
137 else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1)
138 return count;
139 else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
140 return count;
141
142 return -EINVAL;
143}
144
145static const struct file_operations aqm_ops = {
146 .write = aqm_write,
147 .read = aqm_read,
148 .open = simple_open,
149 .llseek = default_llseek,
150};
151
152static ssize_t airtime_flags_read(struct file *file,
153 char __user *user_buf,
154 size_t count, loff_t *ppos)
155{
156 struct ieee80211_local *local = file->private_data;
157 char buf[128] = {}, *pos, *end;
158
159 pos = buf;
160 end = pos + sizeof(buf) - 1;
161
162 if (local->airtime_flags & AIRTIME_USE_TX)
163 pos += scnprintf(pos, end - pos, "AIRTIME_TX\t(%lx)\n",
164 AIRTIME_USE_TX);
165 if (local->airtime_flags & AIRTIME_USE_RX)
166 pos += scnprintf(pos, end - pos, "AIRTIME_RX\t(%lx)\n",
167 AIRTIME_USE_RX);
168
169 return simple_read_from_buffer(user_buf, count, ppos, buf,
170 strlen(buf));
171}
172
173static ssize_t airtime_flags_write(struct file *file,
174 const char __user *user_buf,
175 size_t count, loff_t *ppos)
176{
177 struct ieee80211_local *local = file->private_data;
178 char buf[16];
179
180 if (count >= sizeof(buf))
181 return -EINVAL;
182
183 if (copy_from_user(buf, user_buf, count))
184 return -EFAULT;
185
186 if (count && buf[count - 1] == '\n')
187 buf[count - 1] = '\0';
188 else
189 buf[count] = '\0';
190
191 if (kstrtou16(buf, 0, &local->airtime_flags))
192 return -EINVAL;
193
194 return count;
195}
196
197static const struct file_operations airtime_flags_ops = {
198 .write = airtime_flags_write,
199 .read = airtime_flags_read,
200 .open = simple_open,
201 .llseek = default_llseek,
202};
203
204static ssize_t aql_txq_limit_read(struct file *file,
205 char __user *user_buf,
206 size_t count,
207 loff_t *ppos)
208{
209 struct ieee80211_local *local = file->private_data;
210 char buf[400];
211 int len = 0;
212
213 len = scnprintf(buf, sizeof(buf),
214 "AC AQL limit low AQL limit high\n"
215 "VO %u %u\n"
216 "VI %u %u\n"
217 "BE %u %u\n"
218 "BK %u %u\n",
219 local->airtime[IEEE80211_AC_VO].aql_txq_limit_low,
220 local->airtime[IEEE80211_AC_VO].aql_txq_limit_high,
221 local->airtime[IEEE80211_AC_VI].aql_txq_limit_low,
222 local->airtime[IEEE80211_AC_VI].aql_txq_limit_high,
223 local->airtime[IEEE80211_AC_BE].aql_txq_limit_low,
224 local->airtime[IEEE80211_AC_BE].aql_txq_limit_high,
225 local->airtime[IEEE80211_AC_BK].aql_txq_limit_low,
226 local->airtime[IEEE80211_AC_BK].aql_txq_limit_high);
227 return simple_read_from_buffer(user_buf, count, ppos,
228 buf, len);
229}
230
231static ssize_t aql_txq_limit_write(struct file *file,
232 const char __user *user_buf,
233 size_t count,
234 loff_t *ppos)
235{
236 struct ieee80211_local *local = file->private_data;
237 char buf[100];
238 u32 ac, q_limit_low, q_limit_high, q_limit_low_old, q_limit_high_old;
239 struct sta_info *sta;
240
241 if (count >= sizeof(buf))
242 return -EINVAL;
243
244 if (copy_from_user(buf, user_buf, count))
245 return -EFAULT;
246
247 if (count && buf[count - 1] == '\n')
248 buf[count - 1] = '\0';
249 else
250 buf[count] = '\0';
251
252 if (sscanf(buf, "%u %u %u", &ac, &q_limit_low, &q_limit_high) != 3)
253 return -EINVAL;
254
255 if (ac >= IEEE80211_NUM_ACS)
256 return -EINVAL;
257
258 q_limit_low_old = local->airtime[ac].aql_txq_limit_low;
259 q_limit_high_old = local->airtime[ac].aql_txq_limit_high;
260
261 local->airtime[ac].aql_txq_limit_low = q_limit_low;
262 local->airtime[ac].aql_txq_limit_high = q_limit_high;
263
264 mutex_lock(&local->sta_mtx);
265 list_for_each_entry(sta, &local->sta_list, list) {
266 /* If a sta has customized queue limits, keep it */
267 if (sta->airtime[ac].aql_limit_low == q_limit_low_old &&
268 sta->airtime[ac].aql_limit_high == q_limit_high_old) {
269 sta->airtime[ac].aql_limit_low = q_limit_low;
270 sta->airtime[ac].aql_limit_high = q_limit_high;
271 }
272 }
273 mutex_unlock(&local->sta_mtx);
274 return count;
275}
276
277static const struct file_operations aql_txq_limit_ops = {
278 .write = aql_txq_limit_write,
279 .read = aql_txq_limit_read,
280 .open = simple_open,
281 .llseek = default_llseek,
282};
283
284static ssize_t aql_enable_read(struct file *file, char __user *user_buf,
285 size_t count, loff_t *ppos)
286{
287 char buf[3];
288 int len;
289
290 len = scnprintf(buf, sizeof(buf), "%d\n",
291 !static_key_false(&aql_disable.key));
292
293 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
294}
295
296static ssize_t aql_enable_write(struct file *file, const char __user *user_buf,
297 size_t count, loff_t *ppos)
298{
299 bool aql_disabled = static_key_false(&aql_disable.key);
300 char buf[3];
301 size_t len;
302
303 if (count > sizeof(buf))
304 return -EINVAL;
305
306 if (copy_from_user(buf, user_buf, count))
307 return -EFAULT;
308
309 buf[sizeof(buf) - 1] = '\0';
310 len = strlen(buf);
311 if (len > 0 && buf[len - 1] == '\n')
312 buf[len - 1] = 0;
313
314 if (buf[0] == '0' && buf[1] == '\0') {
315 if (!aql_disabled)
316 static_branch_inc(&aql_disable);
317 } else if (buf[0] == '1' && buf[1] == '\0') {
318 if (aql_disabled)
319 static_branch_dec(&aql_disable);
320 } else {
321 return -EINVAL;
322 }
323
324 return count;
325}
326
327static const struct file_operations aql_enable_ops = {
328 .write = aql_enable_write,
329 .read = aql_enable_read,
330 .open = simple_open,
331 .llseek = default_llseek,
332};
333
334static ssize_t force_tx_status_read(struct file *file,
335 char __user *user_buf,
336 size_t count,
337 loff_t *ppos)
338{
339 struct ieee80211_local *local = file->private_data;
340 char buf[3];
341 int len = 0;
342
343 len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status);
344
345 return simple_read_from_buffer(user_buf, count, ppos,
346 buf, len);
347}
348
349static ssize_t force_tx_status_write(struct file *file,
350 const char __user *user_buf,
351 size_t count,
352 loff_t *ppos)
353{
354 struct ieee80211_local *local = file->private_data;
355 char buf[3];
356
357 if (count >= sizeof(buf))
358 return -EINVAL;
359
360 if (copy_from_user(buf, user_buf, count))
361 return -EFAULT;
362
363 if (count && buf[count - 1] == '\n')
364 buf[count - 1] = '\0';
365 else
366 buf[count] = '\0';
367
368 if (buf[0] == '0' && buf[1] == '\0')
369 local->force_tx_status = 0;
370 else if (buf[0] == '1' && buf[1] == '\0')
371 local->force_tx_status = 1;
372 else
373 return -EINVAL;
374
375 return count;
376}
377
378static const struct file_operations force_tx_status_ops = {
379 .write = force_tx_status_write,
380 .read = force_tx_status_read,
381 .open = simple_open,
382 .llseek = default_llseek,
383};
384
385static ssize_t airtime_read(struct file *file,
386 char __user *user_buf,
387 size_t count,
388 loff_t *ppos)
389{
390 struct ieee80211_local *local = file->private_data;
391 char buf[200];
392 u64 v_t[IEEE80211_NUM_ACS];
393 u64 wt[IEEE80211_NUM_ACS];
394 int len = 0, ac;
395
396 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
397 spin_lock_bh(&local->airtime[ac].lock);
398 v_t[ac] = local->airtime[ac].v_t;
399 wt[ac] = local->airtime[ac].weight_sum;
400 spin_unlock_bh(&local->airtime[ac].lock);
401 }
402 len = scnprintf(buf, sizeof(buf),
403 "\tVO VI BE BK\n"
404 "Virt-t\t%-10llu %-10llu %-10llu %-10llu\n"
405 "Weight\t%-10llu %-10llu %-10llu %-10llu\n",
406 v_t[0],
407 v_t[1],
408 v_t[2],
409 v_t[3],
410 wt[0],
411 wt[1],
412 wt[2],
413 wt[3]);
414
415 return simple_read_from_buffer(user_buf, count, ppos,
416 buf, len);
417}
418
419static const struct file_operations airtime_ops = {
420 .read = airtime_read,
421 .open = simple_open,
422 .llseek = default_llseek,
423};
424
425#ifdef CONFIG_PM
426static ssize_t reset_write(struct file *file, const char __user *user_buf,
427 size_t count, loff_t *ppos)
428{
429 struct ieee80211_local *local = file->private_data;
430 int ret;
431
432 rtnl_lock();
433 wiphy_lock(local->hw.wiphy);
434 __ieee80211_suspend(&local->hw, NULL);
435 ret = __ieee80211_resume(&local->hw);
436 wiphy_unlock(local->hw.wiphy);
437
438 if (ret)
439 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
440
441 rtnl_unlock();
442
443 return count;
444}
445
446static const struct file_operations reset_ops = {
447 .write = reset_write,
448 .open = simple_open,
449 .llseek = noop_llseek,
450};
451#endif
452
453static const char *hw_flag_names[] = {
454#define FLAG(F) [IEEE80211_HW_##F] = #F
455 FLAG(HAS_RATE_CONTROL),
456 FLAG(RX_INCLUDES_FCS),
457 FLAG(HOST_BROADCAST_PS_BUFFERING),
458 FLAG(SIGNAL_UNSPEC),
459 FLAG(SIGNAL_DBM),
460 FLAG(NEED_DTIM_BEFORE_ASSOC),
461 FLAG(SPECTRUM_MGMT),
462 FLAG(AMPDU_AGGREGATION),
463 FLAG(SUPPORTS_PS),
464 FLAG(PS_NULLFUNC_STACK),
465 FLAG(SUPPORTS_DYNAMIC_PS),
466 FLAG(MFP_CAPABLE),
467 FLAG(WANT_MONITOR_VIF),
468 FLAG(NO_AUTO_VIF),
469 FLAG(SW_CRYPTO_CONTROL),
470 FLAG(SUPPORT_FAST_XMIT),
471 FLAG(REPORTS_TX_ACK_STATUS),
472 FLAG(CONNECTION_MONITOR),
473 FLAG(QUEUE_CONTROL),
474 FLAG(SUPPORTS_PER_STA_GTK),
475 FLAG(AP_LINK_PS),
476 FLAG(TX_AMPDU_SETUP_IN_HW),
477 FLAG(SUPPORTS_RC_TABLE),
478 FLAG(P2P_DEV_ADDR_FOR_INTF),
479 FLAG(TIMING_BEACON_ONLY),
480 FLAG(SUPPORTS_HT_CCK_RATES),
481 FLAG(CHANCTX_STA_CSA),
482 FLAG(SUPPORTS_CLONED_SKBS),
483 FLAG(SINGLE_SCAN_ON_ALL_BANDS),
484 FLAG(TDLS_WIDER_BW),
485 FLAG(SUPPORTS_AMSDU_IN_AMPDU),
486 FLAG(BEACON_TX_STATUS),
487 FLAG(NEEDS_UNIQUE_STA_ADDR),
488 FLAG(SUPPORTS_REORDERING_BUFFER),
489 FLAG(USES_RSS),
490 FLAG(TX_AMSDU),
491 FLAG(TX_FRAG_LIST),
492 FLAG(REPORTS_LOW_ACK),
493 FLAG(SUPPORTS_TX_FRAG),
494 FLAG(SUPPORTS_TDLS_BUFFER_STA),
495 FLAG(DEAUTH_NEED_MGD_TX_PREP),
496 FLAG(DOESNT_SUPPORT_QOS_NDP),
497 FLAG(BUFF_MMPDU_TXQ),
498 FLAG(SUPPORTS_VHT_EXT_NSS_BW),
499 FLAG(STA_MMPDU_TXQ),
500 FLAG(TX_STATUS_NO_AMPDU_LEN),
501 FLAG(SUPPORTS_MULTI_BSSID),
502 FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
503 FLAG(AMPDU_KEYBORDER_SUPPORT),
504 FLAG(SUPPORTS_TX_ENCAP_OFFLOAD),
505 FLAG(SUPPORTS_RX_DECAP_OFFLOAD),
506 FLAG(SUPPORTS_CONC_MON_RX_DECAP),
507#undef FLAG
508};
509
510static ssize_t hwflags_read(struct file *file, char __user *user_buf,
511 size_t count, loff_t *ppos)
512{
513 struct ieee80211_local *local = file->private_data;
514 size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
515 char *buf = kzalloc(bufsz, GFP_KERNEL);
516 char *pos = buf, *end = buf + bufsz - 1;
517 ssize_t rv;
518 int i;
519
520 if (!buf)
521 return -ENOMEM;
522
523 /* fail compilation if somebody adds or removes
524 * a flag without updating the name array above
525 */
526 BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
527
528 for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
529 if (test_bit(i, local->hw.flags))
530 pos += scnprintf(pos, end - pos, "%s\n",
531 hw_flag_names[i]);
532 }
533
534 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
535 kfree(buf);
536 return rv;
537}
538
539static ssize_t misc_read(struct file *file, char __user *user_buf,
540 size_t count, loff_t *ppos)
541{
542 struct ieee80211_local *local = file->private_data;
543 /* Max len of each line is 16 characters, plus 9 for 'pending:\n' */
544 size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
545 char *buf;
546 char *pos, *end;
547 ssize_t rv;
548 int i;
549 int ln;
550
551 buf = kzalloc(bufsz, GFP_KERNEL);
552 if (!buf)
553 return -ENOMEM;
554
555 pos = buf;
556 end = buf + bufsz - 1;
557
558 pos += scnprintf(pos, end - pos, "pending:\n");
559
560 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
561 ln = skb_queue_len(&local->pending[i]);
562 pos += scnprintf(pos, end - pos, "[%i] %d\n",
563 i, ln);
564 }
565
566 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
567 kfree(buf);
568 return rv;
569}
570
571static ssize_t queues_read(struct file *file, char __user *user_buf,
572 size_t count, loff_t *ppos)
573{
574 struct ieee80211_local *local = file->private_data;
575 unsigned long flags;
576 char buf[IEEE80211_MAX_QUEUES * 20];
577 int q, res = 0;
578
579 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
580 for (q = 0; q < local->hw.queues; q++)
581 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
582 local->queue_stop_reasons[q],
583 skb_queue_len(&local->pending[q]));
584 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
585
586 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
587}
588
589DEBUGFS_READONLY_FILE_OPS(hwflags);
590DEBUGFS_READONLY_FILE_OPS(queues);
591DEBUGFS_READONLY_FILE_OPS(misc);
592
593/* statistics stuff */
594
595static ssize_t format_devstat_counter(struct ieee80211_local *local,
596 char __user *userbuf,
597 size_t count, loff_t *ppos,
598 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
599 int buflen))
600{
601 struct ieee80211_low_level_stats stats;
602 char buf[20];
603 int res;
604
605 rtnl_lock();
606 res = drv_get_stats(local, &stats);
607 rtnl_unlock();
608 if (res)
609 return res;
610 res = printvalue(&stats, buf, sizeof(buf));
611 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
612}
613
614#define DEBUGFS_DEVSTATS_FILE(name) \
615static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
616 char *buf, int buflen) \
617{ \
618 return scnprintf(buf, buflen, "%u\n", stats->name); \
619} \
620static ssize_t stats_ ##name## _read(struct file *file, \
621 char __user *userbuf, \
622 size_t count, loff_t *ppos) \
623{ \
624 return format_devstat_counter(file->private_data, \
625 userbuf, \
626 count, \
627 ppos, \
628 print_devstats_##name); \
629} \
630 \
631static const struct file_operations stats_ ##name## _ops = { \
632 .read = stats_ ##name## _read, \
633 .open = simple_open, \
634 .llseek = generic_file_llseek, \
635};
636
637#define DEBUGFS_STATS_ADD(name) \
638 debugfs_create_u32(#name, 0400, statsd, &local->name);
639#define DEBUGFS_DEVSTATS_ADD(name) \
640 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
641
642DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
643DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
644DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
645DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
646
647void debugfs_hw_add(struct ieee80211_local *local)
648{
649 struct dentry *phyd = local->hw.wiphy->debugfsdir;
650 struct dentry *statsd;
651
652 if (!phyd)
653 return;
654
655 local->debugfs.keys = debugfs_create_dir("keys", phyd);
656
657 DEBUGFS_ADD(total_ps_buffered);
658 DEBUGFS_ADD(wep_iv);
659 DEBUGFS_ADD(rate_ctrl_alg);
660 DEBUGFS_ADD(queues);
661 DEBUGFS_ADD(misc);
662#ifdef CONFIG_PM
663 DEBUGFS_ADD_MODE(reset, 0200);
664#endif
665 DEBUGFS_ADD(hwflags);
666 DEBUGFS_ADD(user_power);
667 DEBUGFS_ADD(power);
668 DEBUGFS_ADD(hw_conf);
669 DEBUGFS_ADD_MODE(force_tx_status, 0600);
670 DEBUGFS_ADD_MODE(aql_enable, 0600);
671
672 if (local->ops->wake_tx_queue)
673 DEBUGFS_ADD_MODE(aqm, 0600);
674
675 if (wiphy_ext_feature_isset(local->hw.wiphy,
676 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) {
677 DEBUGFS_ADD_MODE(airtime, 0600);
678 DEBUGFS_ADD_MODE(airtime_flags, 0600);
679 }
680
681 DEBUGFS_ADD(aql_txq_limit);
682 debugfs_create_u32("aql_threshold", 0600,
683 phyd, &local->aql_threshold);
684
685 statsd = debugfs_create_dir("statistics", phyd);
686
687 /* if the dir failed, don't put all the other things into the root! */
688 if (!statsd)
689 return;
690
691#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
692 DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
693 DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
694 DEBUGFS_STATS_ADD(dot11FailedCount);
695 DEBUGFS_STATS_ADD(dot11RetryCount);
696 DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
697 DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
698 DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
699 DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
700 DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
701 DEBUGFS_STATS_ADD(tx_handlers_drop);
702 DEBUGFS_STATS_ADD(tx_handlers_queued);
703 DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
704 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
705 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
706 DEBUGFS_STATS_ADD(rx_handlers_drop);
707 DEBUGFS_STATS_ADD(rx_handlers_queued);
708 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
709 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
710 DEBUGFS_STATS_ADD(tx_expand_skb_head);
711 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
712 DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
713 DEBUGFS_STATS_ADD(rx_handlers_fragments);
714 DEBUGFS_STATS_ADD(tx_status_drop);
715#endif
716 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
717 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
718 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
719 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
720}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * mac80211 debugfs for wireless PHYs
4 *
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright (C) 2018 - 2019, 2021-2024 Intel Corporation
8 */
9
10#include <linux/debugfs.h>
11#include <linux/rtnetlink.h>
12#include <linux/vmalloc.h>
13#include "ieee80211_i.h"
14#include "driver-ops.h"
15#include "rate.h"
16#include "debugfs.h"
17
18#define DEBUGFS_FORMAT_BUFFER_SIZE 100
19
20int mac80211_format_buffer(char __user *userbuf, size_t count,
21 loff_t *ppos, char *fmt, ...)
22{
23 va_list args;
24 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
25 int res;
26
27 va_start(args, fmt);
28 res = vscnprintf(buf, sizeof(buf), fmt, args);
29 va_end(args);
30
31 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
32}
33
34#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
35static ssize_t name## _read(struct file *file, char __user *userbuf, \
36 size_t count, loff_t *ppos) \
37{ \
38 struct ieee80211_local *local = file->private_data; \
39 \
40 return mac80211_format_buffer(userbuf, count, ppos, \
41 fmt "\n", ##value); \
42}
43
44#define DEBUGFS_READONLY_FILE_OPS(name) \
45static const struct file_operations name## _ops = { \
46 .read = name## _read, \
47 .open = simple_open, \
48 .llseek = generic_file_llseek, \
49};
50
51#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
52 DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
53 DEBUGFS_READONLY_FILE_OPS(name)
54
55#define DEBUGFS_ADD(name) \
56 debugfs_create_file(#name, 0400, phyd, local, &name## _ops)
57
58#define DEBUGFS_ADD_MODE(name, mode) \
59 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
60
61
62DEBUGFS_READONLY_FILE(hw_conf, "%x",
63 local->hw.conf.flags);
64DEBUGFS_READONLY_FILE(user_power, "%d",
65 local->user_power_level);
66DEBUGFS_READONLY_FILE(power, "%d",
67 local->hw.conf.power_level);
68DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
69 local->total_ps_buffered);
70DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
71 local->wep_iv & 0xffffff);
72DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
73 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
74
75static ssize_t aqm_read(struct file *file,
76 char __user *user_buf,
77 size_t count,
78 loff_t *ppos)
79{
80 struct ieee80211_local *local = file->private_data;
81 struct fq *fq = &local->fq;
82 char buf[200];
83 int len = 0;
84
85 spin_lock_bh(&local->fq.lock);
86 rcu_read_lock();
87
88 len = scnprintf(buf, sizeof(buf),
89 "access name value\n"
90 "R fq_flows_cnt %u\n"
91 "R fq_backlog %u\n"
92 "R fq_overlimit %u\n"
93 "R fq_overmemory %u\n"
94 "R fq_collisions %u\n"
95 "R fq_memory_usage %u\n"
96 "RW fq_memory_limit %u\n"
97 "RW fq_limit %u\n"
98 "RW fq_quantum %u\n",
99 fq->flows_cnt,
100 fq->backlog,
101 fq->overmemory,
102 fq->overlimit,
103 fq->collisions,
104 fq->memory_usage,
105 fq->memory_limit,
106 fq->limit,
107 fq->quantum);
108
109 rcu_read_unlock();
110 spin_unlock_bh(&local->fq.lock);
111
112 return simple_read_from_buffer(user_buf, count, ppos,
113 buf, len);
114}
115
116static ssize_t aqm_write(struct file *file,
117 const char __user *user_buf,
118 size_t count,
119 loff_t *ppos)
120{
121 struct ieee80211_local *local = file->private_data;
122 char buf[100];
123
124 if (count >= sizeof(buf))
125 return -EINVAL;
126
127 if (copy_from_user(buf, user_buf, count))
128 return -EFAULT;
129
130 if (count && buf[count - 1] == '\n')
131 buf[count - 1] = '\0';
132 else
133 buf[count] = '\0';
134
135 if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
136 return count;
137 else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1)
138 return count;
139 else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
140 return count;
141
142 return -EINVAL;
143}
144
145static const struct file_operations aqm_ops = {
146 .write = aqm_write,
147 .read = aqm_read,
148 .open = simple_open,
149 .llseek = default_llseek,
150};
151
152static ssize_t airtime_flags_read(struct file *file,
153 char __user *user_buf,
154 size_t count, loff_t *ppos)
155{
156 struct ieee80211_local *local = file->private_data;
157 char buf[128] = {}, *pos, *end;
158
159 pos = buf;
160 end = pos + sizeof(buf) - 1;
161
162 if (local->airtime_flags & AIRTIME_USE_TX)
163 pos += scnprintf(pos, end - pos, "AIRTIME_TX\t(%lx)\n",
164 AIRTIME_USE_TX);
165 if (local->airtime_flags & AIRTIME_USE_RX)
166 pos += scnprintf(pos, end - pos, "AIRTIME_RX\t(%lx)\n",
167 AIRTIME_USE_RX);
168
169 return simple_read_from_buffer(user_buf, count, ppos, buf,
170 strlen(buf));
171}
172
173static ssize_t airtime_flags_write(struct file *file,
174 const char __user *user_buf,
175 size_t count, loff_t *ppos)
176{
177 struct ieee80211_local *local = file->private_data;
178 char buf[16];
179
180 if (count >= sizeof(buf))
181 return -EINVAL;
182
183 if (copy_from_user(buf, user_buf, count))
184 return -EFAULT;
185
186 if (count && buf[count - 1] == '\n')
187 buf[count - 1] = '\0';
188 else
189 buf[count] = '\0';
190
191 if (kstrtou16(buf, 0, &local->airtime_flags))
192 return -EINVAL;
193
194 return count;
195}
196
197static const struct file_operations airtime_flags_ops = {
198 .write = airtime_flags_write,
199 .read = airtime_flags_read,
200 .open = simple_open,
201 .llseek = default_llseek,
202};
203
204static ssize_t aql_pending_read(struct file *file,
205 char __user *user_buf,
206 size_t count, loff_t *ppos)
207{
208 struct ieee80211_local *local = file->private_data;
209 char buf[400];
210 int len = 0;
211
212 len = scnprintf(buf, sizeof(buf),
213 "AC AQL pending\n"
214 "VO %u us\n"
215 "VI %u us\n"
216 "BE %u us\n"
217 "BK %u us\n"
218 "total %u us\n",
219 atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VO]),
220 atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VI]),
221 atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BE]),
222 atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BK]),
223 atomic_read(&local->aql_total_pending_airtime));
224 return simple_read_from_buffer(user_buf, count, ppos,
225 buf, len);
226}
227
228static const struct file_operations aql_pending_ops = {
229 .read = aql_pending_read,
230 .open = simple_open,
231 .llseek = default_llseek,
232};
233
234static ssize_t aql_txq_limit_read(struct file *file,
235 char __user *user_buf,
236 size_t count,
237 loff_t *ppos)
238{
239 struct ieee80211_local *local = file->private_data;
240 char buf[400];
241 int len = 0;
242
243 len = scnprintf(buf, sizeof(buf),
244 "AC AQL limit low AQL limit high\n"
245 "VO %u %u\n"
246 "VI %u %u\n"
247 "BE %u %u\n"
248 "BK %u %u\n",
249 local->aql_txq_limit_low[IEEE80211_AC_VO],
250 local->aql_txq_limit_high[IEEE80211_AC_VO],
251 local->aql_txq_limit_low[IEEE80211_AC_VI],
252 local->aql_txq_limit_high[IEEE80211_AC_VI],
253 local->aql_txq_limit_low[IEEE80211_AC_BE],
254 local->aql_txq_limit_high[IEEE80211_AC_BE],
255 local->aql_txq_limit_low[IEEE80211_AC_BK],
256 local->aql_txq_limit_high[IEEE80211_AC_BK]);
257 return simple_read_from_buffer(user_buf, count, ppos,
258 buf, len);
259}
260
261static ssize_t aql_txq_limit_write(struct file *file,
262 const char __user *user_buf,
263 size_t count,
264 loff_t *ppos)
265{
266 struct ieee80211_local *local = file->private_data;
267 char buf[100];
268 u32 ac, q_limit_low, q_limit_high, q_limit_low_old, q_limit_high_old;
269 struct sta_info *sta;
270
271 if (count >= sizeof(buf))
272 return -EINVAL;
273
274 if (copy_from_user(buf, user_buf, count))
275 return -EFAULT;
276
277 if (count && buf[count - 1] == '\n')
278 buf[count - 1] = '\0';
279 else
280 buf[count] = '\0';
281
282 if (sscanf(buf, "%u %u %u", &ac, &q_limit_low, &q_limit_high) != 3)
283 return -EINVAL;
284
285 if (ac >= IEEE80211_NUM_ACS)
286 return -EINVAL;
287
288 q_limit_low_old = local->aql_txq_limit_low[ac];
289 q_limit_high_old = local->aql_txq_limit_high[ac];
290
291 wiphy_lock(local->hw.wiphy);
292 local->aql_txq_limit_low[ac] = q_limit_low;
293 local->aql_txq_limit_high[ac] = q_limit_high;
294
295 list_for_each_entry(sta, &local->sta_list, list) {
296 /* If a sta has customized queue limits, keep it */
297 if (sta->airtime[ac].aql_limit_low == q_limit_low_old &&
298 sta->airtime[ac].aql_limit_high == q_limit_high_old) {
299 sta->airtime[ac].aql_limit_low = q_limit_low;
300 sta->airtime[ac].aql_limit_high = q_limit_high;
301 }
302 }
303 wiphy_unlock(local->hw.wiphy);
304
305 return count;
306}
307
308static const struct file_operations aql_txq_limit_ops = {
309 .write = aql_txq_limit_write,
310 .read = aql_txq_limit_read,
311 .open = simple_open,
312 .llseek = default_llseek,
313};
314
315static ssize_t aql_enable_read(struct file *file, char __user *user_buf,
316 size_t count, loff_t *ppos)
317{
318 char buf[3];
319 int len;
320
321 len = scnprintf(buf, sizeof(buf), "%d\n",
322 !static_key_false(&aql_disable.key));
323
324 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
325}
326
327static ssize_t aql_enable_write(struct file *file, const char __user *user_buf,
328 size_t count, loff_t *ppos)
329{
330 bool aql_disabled = static_key_false(&aql_disable.key);
331 char buf[3];
332 size_t len;
333
334 if (count > sizeof(buf))
335 return -EINVAL;
336
337 if (copy_from_user(buf, user_buf, count))
338 return -EFAULT;
339
340 buf[sizeof(buf) - 1] = '\0';
341 len = strlen(buf);
342 if (len > 0 && buf[len - 1] == '\n')
343 buf[len - 1] = 0;
344
345 if (buf[0] == '0' && buf[1] == '\0') {
346 if (!aql_disabled)
347 static_branch_inc(&aql_disable);
348 } else if (buf[0] == '1' && buf[1] == '\0') {
349 if (aql_disabled)
350 static_branch_dec(&aql_disable);
351 } else {
352 return -EINVAL;
353 }
354
355 return count;
356}
357
358static const struct file_operations aql_enable_ops = {
359 .write = aql_enable_write,
360 .read = aql_enable_read,
361 .open = simple_open,
362 .llseek = default_llseek,
363};
364
365static ssize_t force_tx_status_read(struct file *file,
366 char __user *user_buf,
367 size_t count,
368 loff_t *ppos)
369{
370 struct ieee80211_local *local = file->private_data;
371 char buf[3];
372 int len = 0;
373
374 len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status);
375
376 return simple_read_from_buffer(user_buf, count, ppos,
377 buf, len);
378}
379
380static ssize_t force_tx_status_write(struct file *file,
381 const char __user *user_buf,
382 size_t count,
383 loff_t *ppos)
384{
385 struct ieee80211_local *local = file->private_data;
386 char buf[3];
387
388 if (count >= sizeof(buf))
389 return -EINVAL;
390
391 if (copy_from_user(buf, user_buf, count))
392 return -EFAULT;
393
394 if (count && buf[count - 1] == '\n')
395 buf[count - 1] = '\0';
396 else
397 buf[count] = '\0';
398
399 if (buf[0] == '0' && buf[1] == '\0')
400 local->force_tx_status = 0;
401 else if (buf[0] == '1' && buf[1] == '\0')
402 local->force_tx_status = 1;
403 else
404 return -EINVAL;
405
406 return count;
407}
408
409static const struct file_operations force_tx_status_ops = {
410 .write = force_tx_status_write,
411 .read = force_tx_status_read,
412 .open = simple_open,
413 .llseek = default_llseek,
414};
415
416#ifdef CONFIG_PM
417static ssize_t reset_write(struct file *file, const char __user *user_buf,
418 size_t count, loff_t *ppos)
419{
420 struct ieee80211_local *local = file->private_data;
421 int ret;
422
423 rtnl_lock();
424 wiphy_lock(local->hw.wiphy);
425 __ieee80211_suspend(&local->hw, NULL);
426 ret = __ieee80211_resume(&local->hw);
427 wiphy_unlock(local->hw.wiphy);
428
429 if (ret)
430 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
431
432 rtnl_unlock();
433
434 return count;
435}
436
437static const struct file_operations reset_ops = {
438 .write = reset_write,
439 .open = simple_open,
440 .llseek = noop_llseek,
441};
442#endif
443
444static const char *hw_flag_names[] = {
445#define FLAG(F) [IEEE80211_HW_##F] = #F
446 FLAG(HAS_RATE_CONTROL),
447 FLAG(RX_INCLUDES_FCS),
448 FLAG(HOST_BROADCAST_PS_BUFFERING),
449 FLAG(SIGNAL_UNSPEC),
450 FLAG(SIGNAL_DBM),
451 FLAG(NEED_DTIM_BEFORE_ASSOC),
452 FLAG(SPECTRUM_MGMT),
453 FLAG(AMPDU_AGGREGATION),
454 FLAG(SUPPORTS_PS),
455 FLAG(PS_NULLFUNC_STACK),
456 FLAG(SUPPORTS_DYNAMIC_PS),
457 FLAG(MFP_CAPABLE),
458 FLAG(WANT_MONITOR_VIF),
459 FLAG(NO_AUTO_VIF),
460 FLAG(SW_CRYPTO_CONTROL),
461 FLAG(SUPPORT_FAST_XMIT),
462 FLAG(REPORTS_TX_ACK_STATUS),
463 FLAG(CONNECTION_MONITOR),
464 FLAG(QUEUE_CONTROL),
465 FLAG(SUPPORTS_PER_STA_GTK),
466 FLAG(AP_LINK_PS),
467 FLAG(TX_AMPDU_SETUP_IN_HW),
468 FLAG(SUPPORTS_RC_TABLE),
469 FLAG(P2P_DEV_ADDR_FOR_INTF),
470 FLAG(TIMING_BEACON_ONLY),
471 FLAG(SUPPORTS_HT_CCK_RATES),
472 FLAG(CHANCTX_STA_CSA),
473 FLAG(SUPPORTS_CLONED_SKBS),
474 FLAG(SINGLE_SCAN_ON_ALL_BANDS),
475 FLAG(TDLS_WIDER_BW),
476 FLAG(SUPPORTS_AMSDU_IN_AMPDU),
477 FLAG(BEACON_TX_STATUS),
478 FLAG(NEEDS_UNIQUE_STA_ADDR),
479 FLAG(SUPPORTS_REORDERING_BUFFER),
480 FLAG(USES_RSS),
481 FLAG(TX_AMSDU),
482 FLAG(TX_FRAG_LIST),
483 FLAG(REPORTS_LOW_ACK),
484 FLAG(SUPPORTS_TX_FRAG),
485 FLAG(SUPPORTS_TDLS_BUFFER_STA),
486 FLAG(DEAUTH_NEED_MGD_TX_PREP),
487 FLAG(DOESNT_SUPPORT_QOS_NDP),
488 FLAG(BUFF_MMPDU_TXQ),
489 FLAG(SUPPORTS_VHT_EXT_NSS_BW),
490 FLAG(STA_MMPDU_TXQ),
491 FLAG(TX_STATUS_NO_AMPDU_LEN),
492 FLAG(SUPPORTS_MULTI_BSSID),
493 FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
494 FLAG(AMPDU_KEYBORDER_SUPPORT),
495 FLAG(SUPPORTS_TX_ENCAP_OFFLOAD),
496 FLAG(SUPPORTS_RX_DECAP_OFFLOAD),
497 FLAG(SUPPORTS_CONC_MON_RX_DECAP),
498 FLAG(DETECTS_COLOR_COLLISION),
499 FLAG(MLO_MCAST_MULTI_LINK_TX),
500 FLAG(DISALLOW_PUNCTURING),
501 FLAG(HANDLES_QUIET_CSA),
502#undef FLAG
503};
504
505static ssize_t hwflags_read(struct file *file, char __user *user_buf,
506 size_t count, loff_t *ppos)
507{
508 struct ieee80211_local *local = file->private_data;
509 size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
510 char *buf = kzalloc(bufsz, GFP_KERNEL);
511 char *pos = buf, *end = buf + bufsz - 1;
512 ssize_t rv;
513 int i;
514
515 if (!buf)
516 return -ENOMEM;
517
518 /* fail compilation if somebody adds or removes
519 * a flag without updating the name array above
520 */
521 BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
522
523 for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
524 if (test_bit(i, local->hw.flags))
525 pos += scnprintf(pos, end - pos, "%s\n",
526 hw_flag_names[i]);
527 }
528
529 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
530 kfree(buf);
531 return rv;
532}
533
534static ssize_t misc_read(struct file *file, char __user *user_buf,
535 size_t count, loff_t *ppos)
536{
537 struct ieee80211_local *local = file->private_data;
538 /* Max len of each line is 16 characters, plus 9 for 'pending:\n' */
539 size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
540 char *buf;
541 char *pos, *end;
542 ssize_t rv;
543 int i;
544 int ln;
545
546 buf = kzalloc(bufsz, GFP_KERNEL);
547 if (!buf)
548 return -ENOMEM;
549
550 pos = buf;
551 end = buf + bufsz - 1;
552
553 pos += scnprintf(pos, end - pos, "pending:\n");
554
555 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
556 ln = skb_queue_len(&local->pending[i]);
557 pos += scnprintf(pos, end - pos, "[%i] %d\n",
558 i, ln);
559 }
560
561 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
562 kfree(buf);
563 return rv;
564}
565
566static ssize_t queues_read(struct file *file, char __user *user_buf,
567 size_t count, loff_t *ppos)
568{
569 struct ieee80211_local *local = file->private_data;
570 unsigned long flags;
571 char buf[IEEE80211_MAX_QUEUES * 20];
572 int q, res = 0;
573
574 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
575 for (q = 0; q < local->hw.queues; q++)
576 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
577 local->queue_stop_reasons[q],
578 skb_queue_len(&local->pending[q]));
579 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
580
581 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
582}
583
584DEBUGFS_READONLY_FILE_OPS(hwflags);
585DEBUGFS_READONLY_FILE_OPS(queues);
586DEBUGFS_READONLY_FILE_OPS(misc);
587
588/* statistics stuff */
589
590static ssize_t format_devstat_counter(struct ieee80211_local *local,
591 char __user *userbuf,
592 size_t count, loff_t *ppos,
593 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
594 int buflen))
595{
596 struct ieee80211_low_level_stats stats;
597 char buf[20];
598 int res;
599
600 wiphy_lock(local->hw.wiphy);
601 res = drv_get_stats(local, &stats);
602 wiphy_unlock(local->hw.wiphy);
603 if (res)
604 return res;
605 res = printvalue(&stats, buf, sizeof(buf));
606 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
607}
608
609#define DEBUGFS_DEVSTATS_FILE(name) \
610static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
611 char *buf, int buflen) \
612{ \
613 return scnprintf(buf, buflen, "%u\n", stats->name); \
614} \
615static ssize_t stats_ ##name## _read(struct file *file, \
616 char __user *userbuf, \
617 size_t count, loff_t *ppos) \
618{ \
619 return format_devstat_counter(file->private_data, \
620 userbuf, \
621 count, \
622 ppos, \
623 print_devstats_##name); \
624} \
625 \
626static const struct file_operations stats_ ##name## _ops = { \
627 .read = stats_ ##name## _read, \
628 .open = simple_open, \
629 .llseek = generic_file_llseek, \
630};
631
632#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
633#define DEBUGFS_STATS_ADD(name) \
634 debugfs_create_u32(#name, 0400, statsd, &local->name);
635#endif
636#define DEBUGFS_DEVSTATS_ADD(name) \
637 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
638
639DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
640DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
641DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
642DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
643
644void debugfs_hw_add(struct ieee80211_local *local)
645{
646 struct dentry *phyd = local->hw.wiphy->debugfsdir;
647 struct dentry *statsd;
648
649 if (!phyd)
650 return;
651
652 local->debugfs.keys = debugfs_create_dir("keys", phyd);
653
654 DEBUGFS_ADD(total_ps_buffered);
655 DEBUGFS_ADD(wep_iv);
656 DEBUGFS_ADD(rate_ctrl_alg);
657 DEBUGFS_ADD(queues);
658 DEBUGFS_ADD(misc);
659#ifdef CONFIG_PM
660 DEBUGFS_ADD_MODE(reset, 0200);
661#endif
662 DEBUGFS_ADD(hwflags);
663 DEBUGFS_ADD(user_power);
664 DEBUGFS_ADD(power);
665 DEBUGFS_ADD(hw_conf);
666 DEBUGFS_ADD_MODE(force_tx_status, 0600);
667 DEBUGFS_ADD_MODE(aql_enable, 0600);
668 DEBUGFS_ADD(aql_pending);
669 DEBUGFS_ADD_MODE(aqm, 0600);
670
671 DEBUGFS_ADD_MODE(airtime_flags, 0600);
672
673 DEBUGFS_ADD(aql_txq_limit);
674 debugfs_create_u32("aql_threshold", 0600,
675 phyd, &local->aql_threshold);
676
677 statsd = debugfs_create_dir("statistics", phyd);
678
679#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
680 DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
681 DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
682 DEBUGFS_STATS_ADD(dot11FailedCount);
683 DEBUGFS_STATS_ADD(dot11RetryCount);
684 DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
685 DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
686 DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
687 DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
688 DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
689 DEBUGFS_STATS_ADD(tx_handlers_drop);
690 DEBUGFS_STATS_ADD(tx_handlers_queued);
691 DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
692 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
693 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
694 DEBUGFS_STATS_ADD(rx_handlers_drop);
695 DEBUGFS_STATS_ADD(rx_handlers_queued);
696 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
697 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
698 DEBUGFS_STATS_ADD(tx_expand_skb_head);
699 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
700 DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
701 DEBUGFS_STATS_ADD(rx_handlers_fragments);
702 DEBUGFS_STATS_ADD(tx_status_drop);
703#endif
704 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
705 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
706 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
707 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
708}