net/mac80211/debugfs.c

   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, 2021-2022 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_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
 228 static const struct file_operations aql_pending_ops = {
 229         .read = aql_pending_read,
 230         .open = simple_open,
 231         .llseek = default_llseek,
 232 };
 233
 234 static 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
 261 static 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         local->aql_txq_limit_low[ac] = q_limit_low;
 292         local->aql_txq_limit_high[ac] = q_limit_high;
 293
 294         mutex_lock(&local->sta_mtx);
 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         mutex_unlock(&local->sta_mtx);
 304         return count;
 305 }
 306
 307 static const struct file_operations aql_txq_limit_ops = {
 308         .write = aql_txq_limit_write,
 309         .read = aql_txq_limit_read,
 310         .open = simple_open,
 311         .llseek = default_llseek,
 312 };
 313
 314 static ssize_t aql_enable_read(struct file *file, char __user *user_buf,
 315                                size_t count, loff_t *ppos)
 316 {
 317         char buf[3];
 318         int len;
 319
 320         len = scnprintf(buf, sizeof(buf), "%d\n",
 321                         !static_key_false(&aql_disable.key));
 322
 323         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 324 }
 325
 326 static ssize_t aql_enable_write(struct file *file, const char __user *user_buf,
 327                                 size_t count, loff_t *ppos)
 328 {
 329         bool aql_disabled = static_key_false(&aql_disable.key);
 330         char buf[3];
 331         size_t len;
 332
 333         if (count > sizeof(buf))
 334                 return -EINVAL;
 335
 336         if (copy_from_user(buf, user_buf, count))
 337                 return -EFAULT;
 338
 339         buf[sizeof(buf) - 1] = '\0';
 340         len = strlen(buf);
 341         if (len > 0 && buf[len - 1] == '\n')
 342                 buf[len - 1] = 0;
 343
 344         if (buf[0] == '0' && buf[1] == '\0') {
 345                 if (!aql_disabled)
 346                         static_branch_inc(&aql_disable);
 347         } else if (buf[0] == '1' && buf[1] == '\0') {
 348                 if (aql_disabled)
 349                         static_branch_dec(&aql_disable);
 350         } else {
 351                 return -EINVAL;
 352         }
 353
 354         return count;
 355 }
 356
 357 static const struct file_operations aql_enable_ops = {
 358         .write = aql_enable_write,
 359         .read = aql_enable_read,
 360         .open = simple_open,
 361         .llseek = default_llseek,
 362 };
 363
 364 static ssize_t force_tx_status_read(struct file *file,
 365                                     char __user *user_buf,
 366                                     size_t count,
 367                                     loff_t *ppos)
 368 {
 369         struct ieee80211_local *local = file->private_data;
 370         char buf[3];
 371         int len = 0;
 372
 373         len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status);
 374
 375         return simple_read_from_buffer(user_buf, count, ppos,
 376                                        buf, len);
 377 }
 378
 379 static ssize_t force_tx_status_write(struct file *file,
 380                                      const char __user *user_buf,
 381                                      size_t count,
 382                                      loff_t *ppos)
 383 {
 384         struct ieee80211_local *local = file->private_data;
 385         char buf[3];
 386
 387         if (count >= sizeof(buf))
 388                 return -EINVAL;
 389
 390         if (copy_from_user(buf, user_buf, count))
 391                 return -EFAULT;
 392
 393         if (count && buf[count - 1] == '\n')
 394                 buf[count - 1] = '\0';
 395         else
 396                 buf[count] = '\0';
 397
 398         if (buf[0] == '0' && buf[1] == '\0')
 399                 local->force_tx_status = 0;
 400         else if (buf[0] == '1' && buf[1] == '\0')
 401                 local->force_tx_status = 1;
 402         else
 403                 return -EINVAL;
 404
 405         return count;
 406 }
 407
 408 static const struct file_operations force_tx_status_ops = {
 409         .write = force_tx_status_write,
 410         .read = force_tx_status_read,
 411         .open = simple_open,
 412         .llseek = default_llseek,
 413 };
 414
 415 #ifdef CONFIG_PM
 416 static ssize_t reset_write(struct file *file, const char __user *user_buf,
 417                            size_t count, loff_t *ppos)
 418 {
 419         struct ieee80211_local *local = file->private_data;
 420         int ret;
 421
 422         rtnl_lock();
 423         wiphy_lock(local->hw.wiphy);
 424         __ieee80211_suspend(&local->hw, NULL);
 425         ret = __ieee80211_resume(&local->hw);
 426         wiphy_unlock(local->hw.wiphy);
 427
 428         if (ret)
 429                 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
 430
 431         rtnl_unlock();
 432
 433         return count;
 434 }
 435
 436 static const struct file_operations reset_ops = {
 437         .write = reset_write,
 438         .open = simple_open,
 439         .llseek = noop_llseek,
 440 };
 441 #endif
 442
 443 static const char *hw_flag_names[] = {
 444 #define FLAG(F) [IEEE80211_HW_##F] = #F
 445         FLAG(HAS_RATE_CONTROL),
 446         FLAG(RX_INCLUDES_FCS),
 447         FLAG(HOST_BROADCAST_PS_BUFFERING),
 448         FLAG(SIGNAL_UNSPEC),
 449         FLAG(SIGNAL_DBM),
 450         FLAG(NEED_DTIM_BEFORE_ASSOC),
 451         FLAG(SPECTRUM_MGMT),
 452         FLAG(AMPDU_AGGREGATION),
 453         FLAG(SUPPORTS_PS),
 454         FLAG(PS_NULLFUNC_STACK),
 455         FLAG(SUPPORTS_DYNAMIC_PS),
 456         FLAG(MFP_CAPABLE),
 457         FLAG(WANT_MONITOR_VIF),
 458         FLAG(NO_AUTO_VIF),
 459         FLAG(SW_CRYPTO_CONTROL),
 460         FLAG(SUPPORT_FAST_XMIT),
 461         FLAG(REPORTS_TX_ACK_STATUS),
 462         FLAG(CONNECTION_MONITOR),
 463         FLAG(QUEUE_CONTROL),
 464         FLAG(SUPPORTS_PER_STA_GTK),
 465         FLAG(AP_LINK_PS),
 466         FLAG(TX_AMPDU_SETUP_IN_HW),
 467         FLAG(SUPPORTS_RC_TABLE),
 468         FLAG(P2P_DEV_ADDR_FOR_INTF),
 469         FLAG(TIMING_BEACON_ONLY),
 470         FLAG(SUPPORTS_HT_CCK_RATES),
 471         FLAG(CHANCTX_STA_CSA),
 472         FLAG(SUPPORTS_CLONED_SKBS),
 473         FLAG(SINGLE_SCAN_ON_ALL_BANDS),
 474         FLAG(TDLS_WIDER_BW),
 475         FLAG(SUPPORTS_AMSDU_IN_AMPDU),
 476         FLAG(BEACON_TX_STATUS),
 477         FLAG(NEEDS_UNIQUE_STA_ADDR),
 478         FLAG(SUPPORTS_REORDERING_BUFFER),
 479         FLAG(USES_RSS),
 480         FLAG(TX_AMSDU),
 481         FLAG(TX_FRAG_LIST),
 482         FLAG(REPORTS_LOW_ACK),
 483         FLAG(SUPPORTS_TX_FRAG),
 484         FLAG(SUPPORTS_TDLS_BUFFER_STA),
 485         FLAG(DEAUTH_NEED_MGD_TX_PREP),
 486         FLAG(DOESNT_SUPPORT_QOS_NDP),
 487         FLAG(BUFF_MMPDU_TXQ),
 488         FLAG(SUPPORTS_VHT_EXT_NSS_BW),
 489         FLAG(STA_MMPDU_TXQ),
 490         FLAG(TX_STATUS_NO_AMPDU_LEN),
 491         FLAG(SUPPORTS_MULTI_BSSID),
 492         FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
 493         FLAG(AMPDU_KEYBORDER_SUPPORT),
 494         FLAG(SUPPORTS_TX_ENCAP_OFFLOAD),
 495         FLAG(SUPPORTS_RX_DECAP_OFFLOAD),
 496         FLAG(SUPPORTS_CONC_MON_RX_DECAP),
 497         FLAG(DETECTS_COLOR_COLLISION),
 498         FLAG(MLO_MCAST_MULTI_LINK_TX),
 499 #undef FLAG
 500 };
 501
 502 static ssize_t hwflags_read(struct file *file, char __user *user_buf,
 503                             size_t count, loff_t *ppos)
 504 {
 505         struct ieee80211_local *local = file->private_data;
 506         size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
 507         char *buf = kzalloc(bufsz, GFP_KERNEL);
 508         char *pos = buf, *end = buf + bufsz - 1;
 509         ssize_t rv;
 510         int i;
 511
 512         if (!buf)
 513                 return -ENOMEM;
 514
 515         /* fail compilation if somebody adds or removes
 516          * a flag without updating the name array above
 517          */
 518         BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
 519
 520         for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
 521                 if (test_bit(i, local->hw.flags))
 522                         pos += scnprintf(pos, end - pos, "%s\n",
 523                                          hw_flag_names[i]);
 524         }
 525
 526         rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 527         kfree(buf);
 528         return rv;
 529 }
 530
 531 static ssize_t misc_read(struct file *file, char __user *user_buf,
 532                          size_t count, loff_t *ppos)
 533 {
 534         struct ieee80211_local *local = file->private_data;
 535         /* Max len of each line is 16 characters, plus 9 for 'pending:\n' */
 536         size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
 537         char *buf;
 538         char *pos, *end;
 539         ssize_t rv;
 540         int i;
 541         int ln;
 542
 543         buf = kzalloc(bufsz, GFP_KERNEL);
 544         if (!buf)
 545                 return -ENOMEM;
 546
 547         pos = buf;
 548         end = buf + bufsz - 1;
 549
 550         pos += scnprintf(pos, end - pos, "pending:\n");
 551
 552         for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
 553                 ln = skb_queue_len(&local->pending[i]);
 554                 pos += scnprintf(pos, end - pos, "[%i] %d\n",
 555                                  i, ln);
 556         }
 557
 558         rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 559         kfree(buf);
 560         return rv;
 561 }
 562
 563 static ssize_t queues_read(struct file *file, char __user *user_buf,
 564                            size_t count, loff_t *ppos)
 565 {
 566         struct ieee80211_local *local = file->private_data;
 567         unsigned long flags;
 568         char buf[IEEE80211_MAX_QUEUES * 20];
 569         int q, res = 0;
 570
 571         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 572         for (q = 0; q < local->hw.queues; q++)
 573                 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
 574                                 local->queue_stop_reasons[q],
 575                                 skb_queue_len(&local->pending[q]));
 576         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 577
 578         return simple_read_from_buffer(user_buf, count, ppos, buf, res);
 579 }
 580
 581 DEBUGFS_READONLY_FILE_OPS(hwflags);
 582 DEBUGFS_READONLY_FILE_OPS(queues);
 583 DEBUGFS_READONLY_FILE_OPS(misc);
 584
 585 /* statistics stuff */
 586
 587 static ssize_t format_devstat_counter(struct ieee80211_local *local,
 588         char __user *userbuf,
 589         size_t count, loff_t *ppos,
 590         int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
 591                           int buflen))
 592 {
 593         struct ieee80211_low_level_stats stats;
 594         char buf[20];
 595         int res;
 596
 597         rtnl_lock();
 598         res = drv_get_stats(local, &stats);
 599         rtnl_unlock();
 600         if (res)
 601                 return res;
 602         res = printvalue(&stats, buf, sizeof(buf));
 603         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 604 }
 605
 606 #define DEBUGFS_DEVSTATS_FILE(name)                                     \
 607 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
 608                                  char *buf, int buflen)                 \
 609 {                                                                       \
 610         return scnprintf(buf, buflen, "%u\n", stats->name);             \
 611 }                                                                       \
 612 static ssize_t stats_ ##name## _read(struct file *file,                 \
 613                                      char __user *userbuf,              \
 614                                      size_t count, loff_t *ppos)        \
 615 {                                                                       \
 616         return format_devstat_counter(file->private_data,               \
 617                                       userbuf,                          \
 618                                       count,                            \
 619                                       ppos,                             \
 620                                       print_devstats_##name);           \
 621 }                                                                       \
 622                                                                         \
 623 static const struct file_operations stats_ ##name## _ops = {            \
 624         .read = stats_ ##name## _read,                                  \
 625         .open = simple_open,                                            \
 626         .llseek = generic_file_llseek,                                  \
 627 };
 628
 629 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 630 #define DEBUGFS_STATS_ADD(name)                                 \
 631         debugfs_create_u32(#name, 0400, statsd, &local->name);
 632 #endif
 633 #define DEBUGFS_DEVSTATS_ADD(name)                                      \
 634         debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
 635
 636 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
 637 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
 638 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
 639 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
 640
 641 void debugfs_hw_add(struct ieee80211_local *local)
 642 {
 643         struct dentry *phyd = local->hw.wiphy->debugfsdir;
 644         struct dentry *statsd;
 645
 646         if (!phyd)
 647                 return;
 648
 649         local->debugfs.keys = debugfs_create_dir("keys", phyd);
 650
 651         DEBUGFS_ADD(total_ps_buffered);
 652         DEBUGFS_ADD(wep_iv);
 653         DEBUGFS_ADD(rate_ctrl_alg);
 654         DEBUGFS_ADD(queues);
 655         DEBUGFS_ADD(misc);
 656 #ifdef CONFIG_PM
 657         DEBUGFS_ADD_MODE(reset, 0200);
 658 #endif
 659         DEBUGFS_ADD(hwflags);
 660         DEBUGFS_ADD(user_power);
 661         DEBUGFS_ADD(power);
 662         DEBUGFS_ADD(hw_conf);
 663         DEBUGFS_ADD_MODE(force_tx_status, 0600);
 664         DEBUGFS_ADD_MODE(aql_enable, 0600);
 665         DEBUGFS_ADD(aql_pending);
 666
 667         if (local->ops->wake_tx_queue)
 668                 DEBUGFS_ADD_MODE(aqm, 0600);
 669
 670         DEBUGFS_ADD_MODE(airtime_flags, 0600);
 671
 672         DEBUGFS_ADD(aql_txq_limit);
 673         debugfs_create_u32("aql_threshold", 0600,
 674                            phyd, &local->aql_threshold);
 675
 676         statsd = debugfs_create_dir("statistics", phyd);
 677
 678         /* if the dir failed, don't put all the other things into the root! */
 679         if (!statsd)
 680                 return;
 681
 682 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 683         DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
 684         DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
 685         DEBUGFS_STATS_ADD(dot11FailedCount);
 686         DEBUGFS_STATS_ADD(dot11RetryCount);
 687         DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
 688         DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
 689         DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
 690         DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
 691         DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
 692         DEBUGFS_STATS_ADD(tx_handlers_drop);
 693         DEBUGFS_STATS_ADD(tx_handlers_queued);
 694         DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
 695         DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
 696         DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
 697         DEBUGFS_STATS_ADD(rx_handlers_drop);
 698         DEBUGFS_STATS_ADD(rx_handlers_queued);
 699         DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
 700         DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
 701         DEBUGFS_STATS_ADD(tx_expand_skb_head);
 702         DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
 703         DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
 704         DEBUGFS_STATS_ADD(rx_handlers_fragments);
 705         DEBUGFS_STATS_ADD(tx_status_drop);
 706 #endif
 707         DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
 708         DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
 709         DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
 710         DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
 711 }