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 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->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
 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->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
 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] == '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] == '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 static 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
 419 static const struct file_operations airtime_ops = {
 420         .read = airtime_read,
 421         .open = simple_open,
 422         .llseek = default_llseek,
 423 };
 424
 425 #ifdef CONFIG_PM
 426 static 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
 446 static const struct file_operations reset_ops = {
 447         .write = reset_write,
 448         .open = simple_open,
 449         .llseek = noop_llseek,
 450 };
 451 #endif
 452
 453 static 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
 510 static 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
 539 static 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
 571 static 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
 589 DEBUGFS_READONLY_FILE_OPS(hwflags);
 590 DEBUGFS_READONLY_FILE_OPS(queues);
 591 DEBUGFS_READONLY_FILE_OPS(misc);
 592
 593 /* statistics stuff */
 594
 595 static 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)                                     \
 615 static 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 }                                                                       \
 620 static 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                                                                         \
 631 static 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
 642 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
 643 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
 644 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
 645 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
 646
 647 void 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 }