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Linux/net/mac80211/debugfs.c

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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 
 20 int 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...)                   \
 35 static 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)                 \
 45 static 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 
 62 DEBUGFS_READONLY_FILE(hw_conf, "%x",
 63                       local->hw.conf.flags);
 64 DEBUGFS_READONLY_FILE(user_power, "%d",
 65                       local->user_power_level);
 66 DEBUGFS_READONLY_FILE(power, "%d",
 67                       local->hw.conf.power_level);
 68 DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
 69                       local->total_ps_buffered);
 70 DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
 71                       local->wep_iv & 0xffffff);
 72 DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
 73         local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
 74 
 75 static 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 
116 static 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 
145 static const struct file_operations aqm_ops = {
146         .write = aqm_write,
147         .read = aqm_read,
148         .open = simple_open,
149         .llseek = default_llseek,
150 };
151 
152 static 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 
173 static 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 
197 static 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 
204 static 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->aql_txq_limit_low[IEEE80211_AC_VO],
220                         local->aql_txq_limit_high[IEEE80211_AC_VO],
221                         local->aql_txq_limit_low[IEEE80211_AC_VI],
222                         local->aql_txq_limit_high[IEEE80211_AC_VI],
223                         local->aql_txq_limit_low[IEEE80211_AC_BE],
224                         local->aql_txq_limit_high[IEEE80211_AC_BE],
225                         local->aql_txq_limit_low[IEEE80211_AC_BK],
226                         local->aql_txq_limit_high[IEEE80211_AC_BK]);
227         return simple_read_from_buffer(user_buf, count, ppos,
228                                        buf, len);
229 }
230 
231 static 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->aql_txq_limit_low[ac];
259         q_limit_high_old = local->aql_txq_limit_high[ac];
260 
261         local->aql_txq_limit_low[ac] = q_limit_low;
262         local->aql_txq_limit_high[ac] = 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 
277 static 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 
284 static 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 
296 static 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] == '' && 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 
327 static 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 
334 static 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 
349 static 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] == '' && 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 
378 static 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 
385 #ifdef CONFIG_PM
386 static ssize_t reset_write(struct file *file, const char __user *user_buf,
387                            size_t count, loff_t *ppos)
388 {
389         struct ieee80211_local *local = file->private_data;
390         int ret;
391 
392         rtnl_lock();
393         wiphy_lock(local->hw.wiphy);
394         __ieee80211_suspend(&local->hw, NULL);
395         ret = __ieee80211_resume(&local->hw);
396         wiphy_unlock(local->hw.wiphy);
397 
398         if (ret)
399                 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
400 
401         rtnl_unlock();
402 
403         return count;
404 }
405 
406 static const struct file_operations reset_ops = {
407         .write = reset_write,
408         .open = simple_open,
409         .llseek = noop_llseek,
410 };
411 #endif
412 
413 static const char *hw_flag_names[] = {
414 #define FLAG(F) [IEEE80211_HW_##F] = #F
415         FLAG(HAS_RATE_CONTROL),
416         FLAG(RX_INCLUDES_FCS),
417         FLAG(HOST_BROADCAST_PS_BUFFERING),
418         FLAG(SIGNAL_UNSPEC),
419         FLAG(SIGNAL_DBM),
420         FLAG(NEED_DTIM_BEFORE_ASSOC),
421         FLAG(SPECTRUM_MGMT),
422         FLAG(AMPDU_AGGREGATION),
423         FLAG(SUPPORTS_PS),
424         FLAG(PS_NULLFUNC_STACK),
425         FLAG(SUPPORTS_DYNAMIC_PS),
426         FLAG(MFP_CAPABLE),
427         FLAG(WANT_MONITOR_VIF),
428         FLAG(NO_AUTO_VIF),
429         FLAG(SW_CRYPTO_CONTROL),
430         FLAG(SUPPORT_FAST_XMIT),
431         FLAG(REPORTS_TX_ACK_STATUS),
432         FLAG(CONNECTION_MONITOR),
433         FLAG(QUEUE_CONTROL),
434         FLAG(SUPPORTS_PER_STA_GTK),
435         FLAG(AP_LINK_PS),
436         FLAG(TX_AMPDU_SETUP_IN_HW),
437         FLAG(SUPPORTS_RC_TABLE),
438         FLAG(P2P_DEV_ADDR_FOR_INTF),
439         FLAG(TIMING_BEACON_ONLY),
440         FLAG(SUPPORTS_HT_CCK_RATES),
441         FLAG(CHANCTX_STA_CSA),
442         FLAG(SUPPORTS_CLONED_SKBS),
443         FLAG(SINGLE_SCAN_ON_ALL_BANDS),
444         FLAG(TDLS_WIDER_BW),
445         FLAG(SUPPORTS_AMSDU_IN_AMPDU),
446         FLAG(BEACON_TX_STATUS),
447         FLAG(NEEDS_UNIQUE_STA_ADDR),
448         FLAG(SUPPORTS_REORDERING_BUFFER),
449         FLAG(USES_RSS),
450         FLAG(TX_AMSDU),
451         FLAG(TX_FRAG_LIST),
452         FLAG(REPORTS_LOW_ACK),
453         FLAG(SUPPORTS_TX_FRAG),
454         FLAG(SUPPORTS_TDLS_BUFFER_STA),
455         FLAG(DEAUTH_NEED_MGD_TX_PREP),
456         FLAG(DOESNT_SUPPORT_QOS_NDP),
457         FLAG(BUFF_MMPDU_TXQ),
458         FLAG(SUPPORTS_VHT_EXT_NSS_BW),
459         FLAG(STA_MMPDU_TXQ),
460         FLAG(TX_STATUS_NO_AMPDU_LEN),
461         FLAG(SUPPORTS_MULTI_BSSID),
462         FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
463         FLAG(AMPDU_KEYBORDER_SUPPORT),
464         FLAG(SUPPORTS_TX_ENCAP_OFFLOAD),
465         FLAG(SUPPORTS_RX_DECAP_OFFLOAD),
466 #undef FLAG
467 };
468 
469 static ssize_t hwflags_read(struct file *file, char __user *user_buf,
470                             size_t count, loff_t *ppos)
471 {
472         struct ieee80211_local *local = file->private_data;
473         size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
474         char *buf = kzalloc(bufsz, GFP_KERNEL);
475         char *pos = buf, *end = buf + bufsz - 1;
476         ssize_t rv;
477         int i;
478 
479         if (!buf)
480                 return -ENOMEM;
481 
482         /* fail compilation if somebody adds or removes
483          * a flag without updating the name array above
484          */
485         BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
486 
487         for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
488                 if (test_bit(i, local->hw.flags))
489                         pos += scnprintf(pos, end - pos, "%s\n",
490                                          hw_flag_names[i]);
491         }
492 
493         rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
494         kfree(buf);
495         return rv;
496 }
497 
498 static ssize_t misc_read(struct file *file, char __user *user_buf,
499                          size_t count, loff_t *ppos)
500 {
501         struct ieee80211_local *local = file->private_data;
502         /* Max len of each line is 16 characters, plus 9 for 'pending:\n' */
503         size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
504         char *buf;
505         char *pos, *end;
506         ssize_t rv;
507         int i;
508         int ln;
509 
510         buf = kzalloc(bufsz, GFP_KERNEL);
511         if (!buf)
512                 return -ENOMEM;
513 
514         pos = buf;
515         end = buf + bufsz - 1;
516 
517         pos += scnprintf(pos, end - pos, "pending:\n");
518 
519         for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
520                 ln = skb_queue_len(&local->pending[i]);
521                 pos += scnprintf(pos, end - pos, "[%i] %d\n",
522                                  i, ln);
523         }
524 
525         rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
526         kfree(buf);
527         return rv;
528 }
529 
530 static ssize_t queues_read(struct file *file, char __user *user_buf,
531                            size_t count, loff_t *ppos)
532 {
533         struct ieee80211_local *local = file->private_data;
534         unsigned long flags;
535         char buf[IEEE80211_MAX_QUEUES * 20];
536         int q, res = 0;
537 
538         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
539         for (q = 0; q < local->hw.queues; q++)
540                 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
541                                 local->queue_stop_reasons[q],
542                                 skb_queue_len(&local->pending[q]));
543         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
544 
545         return simple_read_from_buffer(user_buf, count, ppos, buf, res);
546 }
547 
548 DEBUGFS_READONLY_FILE_OPS(hwflags);
549 DEBUGFS_READONLY_FILE_OPS(queues);
550 DEBUGFS_READONLY_FILE_OPS(misc);
551 
552 /* statistics stuff */
553 
554 static ssize_t format_devstat_counter(struct ieee80211_local *local,
555         char __user *userbuf,
556         size_t count, loff_t *ppos,
557         int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
558                           int buflen))
559 {
560         struct ieee80211_low_level_stats stats;
561         char buf[20];
562         int res;
563 
564         rtnl_lock();
565         res = drv_get_stats(local, &stats);
566         rtnl_unlock();
567         if (res)
568                 return res;
569         res = printvalue(&stats, buf, sizeof(buf));
570         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
571 }
572 
573 #define DEBUGFS_DEVSTATS_FILE(name)                                     \
574 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
575                                  char *buf, int buflen)                 \
576 {                                                                       \
577         return scnprintf(buf, buflen, "%u\n", stats->name);             \
578 }                                                                       \
579 static ssize_t stats_ ##name## _read(struct file *file,                 \
580                                      char __user *userbuf,              \
581                                      size_t count, loff_t *ppos)        \
582 {                                                                       \
583         return format_devstat_counter(file->private_data,               \
584                                       userbuf,                          \
585                                       count,                            \
586                                       ppos,                             \
587                                       print_devstats_##name);           \
588 }                                                                       \
589                                                                         \
590 static const struct file_operations stats_ ##name## _ops = {            \
591         .read = stats_ ##name## _read,                                  \
592         .open = simple_open,                                            \
593         .llseek = generic_file_llseek,                                  \
594 };
595 
596 #define DEBUGFS_STATS_ADD(name)                                 \
597         debugfs_create_u32(#name, 0400, statsd, &local->name);
598 #define DEBUGFS_DEVSTATS_ADD(name)                                      \
599         debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
600 
601 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
602 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
603 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
604 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
605 
606 void debugfs_hw_add(struct ieee80211_local *local)
607 {
608         struct dentry *phyd = local->hw.wiphy->debugfsdir;
609         struct dentry *statsd;
610 
611         if (!phyd)
612                 return;
613 
614         local->debugfs.keys = debugfs_create_dir("keys", phyd);
615 
616         DEBUGFS_ADD(total_ps_buffered);
617         DEBUGFS_ADD(wep_iv);
618         DEBUGFS_ADD(rate_ctrl_alg);
619         DEBUGFS_ADD(queues);
620         DEBUGFS_ADD(misc);
621 #ifdef CONFIG_PM
622         DEBUGFS_ADD_MODE(reset, 0200);
623 #endif
624         DEBUGFS_ADD(hwflags);
625         DEBUGFS_ADD(user_power);
626         DEBUGFS_ADD(power);
627         DEBUGFS_ADD(hw_conf);
628         DEBUGFS_ADD_MODE(force_tx_status, 0600);
629         DEBUGFS_ADD_MODE(aql_enable, 0600);
630 
631         if (local->ops->wake_tx_queue)
632                 DEBUGFS_ADD_MODE(aqm, 0600);
633 
634         DEBUGFS_ADD_MODE(airtime_flags, 0600);
635 
636         DEBUGFS_ADD(aql_txq_limit);
637         debugfs_create_u32("aql_threshold", 0600,
638                            phyd, &local->aql_threshold);
639 
640         statsd = debugfs_create_dir("statistics", phyd);
641 
642         /* if the dir failed, don't put all the other things into the root! */
643         if (!statsd)
644                 return;
645 
646 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
647         DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
648         DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
649         DEBUGFS_STATS_ADD(dot11FailedCount);
650         DEBUGFS_STATS_ADD(dot11RetryCount);
651         DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
652         DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
653         DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
654         DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
655         DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
656         DEBUGFS_STATS_ADD(tx_handlers_drop);
657         DEBUGFS_STATS_ADD(tx_handlers_queued);
658         DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
659         DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
660         DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
661         DEBUGFS_STATS_ADD(rx_handlers_drop);
662         DEBUGFS_STATS_ADD(rx_handlers_queued);
663         DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
664         DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
665         DEBUGFS_STATS_ADD(tx_expand_skb_head);
666         DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
667         DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
668         DEBUGFS_STATS_ADD(rx_handlers_fragments);
669         DEBUGFS_STATS_ADD(tx_status_drop);
670 #endif
671         DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
672         DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
673         DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
674         DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
675 }
676 

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