net/mac80211/debugfs_sta.c

   1 /*
   2  * Copyright 2003-2005  Devicescape Software, Inc.
   3  * Copyright (c) 2006   Jiri Benc <jbenc@suse.cz>
   4  * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  * Copyright(c) 2016 Intel Deutschland GmbH
   7  * Copyright (C) 2018 Intel Corporation
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/debugfs.h>
  15 #include <linux/ieee80211.h>
  16 #include "ieee80211_i.h"
  17 #include "debugfs.h"
  18 #include "debugfs_sta.h"
  19 #include "sta_info.h"
  20 #include "driver-ops.h"
  21
  22 /* sta attributtes */
  23
  24 #define STA_READ(name, field, format_string)                            \
  25 static ssize_t sta_ ##name## _read(struct file *file,                   \
  26                                    char __user *userbuf,                \
  27                                    size_t count, loff_t *ppos)          \
  28 {                                                                       \
  29         struct sta_info *sta = file->private_data;                      \
  30         return mac80211_format_buffer(userbuf, count, ppos,             \
  31                                       format_string, sta->field);       \
  32 }
  33 #define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
  34
  35 #define STA_OPS(name)                                                   \
  36 static const struct file_operations sta_ ##name## _ops = {              \
  37         .read = sta_##name##_read,                                      \
  38         .open = simple_open,                                            \
  39         .llseek = generic_file_llseek,                                  \
  40 }
  41
  42 #define STA_OPS_RW(name)                                                \
  43 static const struct file_operations sta_ ##name## _ops = {              \
  44         .read = sta_##name##_read,                                      \
  45         .write = sta_##name##_write,                                    \
  46         .open = simple_open,                                            \
  47         .llseek = generic_file_llseek,                                  \
  48 }
  49
  50 #define STA_FILE(name, field, format)                                   \
  51                 STA_READ_##format(name, field)                          \
  52                 STA_OPS(name)
  53
  54 STA_FILE(aid, sta.aid, D);
  55
  56 static const char * const sta_flag_names[] = {
  57 #define FLAG(F) [WLAN_STA_##F] = #F
  58         FLAG(AUTH),
  59         FLAG(ASSOC),
  60         FLAG(PS_STA),
  61         FLAG(AUTHORIZED),
  62         FLAG(SHORT_PREAMBLE),
  63         FLAG(WDS),
  64         FLAG(CLEAR_PS_FILT),
  65         FLAG(MFP),
  66         FLAG(BLOCK_BA),
  67         FLAG(PS_DRIVER),
  68         FLAG(PSPOLL),
  69         FLAG(TDLS_PEER),
  70         FLAG(TDLS_PEER_AUTH),
  71         FLAG(TDLS_INITIATOR),
  72         FLAG(TDLS_CHAN_SWITCH),
  73         FLAG(TDLS_OFF_CHANNEL),
  74         FLAG(TDLS_WIDER_BW),
  75         FLAG(UAPSD),
  76         FLAG(SP),
  77         FLAG(4ADDR_EVENT),
  78         FLAG(INSERTED),
  79         FLAG(RATE_CONTROL),
  80         FLAG(TOFFSET_KNOWN),
  81         FLAG(MPSP_OWNER),
  82         FLAG(MPSP_RECIPIENT),
  83         FLAG(PS_DELIVER),
  84 #undef FLAG
  85 };
  86
  87 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
  88                               size_t count, loff_t *ppos)
  89 {
  90         char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
  91         char *end = buf + sizeof(buf) - 1;
  92         struct sta_info *sta = file->private_data;
  93         unsigned int flg;
  94
  95         BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);
  96
  97         for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
  98                 if (test_sta_flag(sta, flg))
  99                         pos += scnprintf(pos, end - pos, "%s\n",
 100                                          sta_flag_names[flg]);
 101         }
 102
 103         return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
 104 }
 105 STA_OPS(flags);
 106
 107 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
 108                                           char __user *userbuf,
 109                                           size_t count, loff_t *ppos)
 110 {
 111         struct sta_info *sta = file->private_data;
 112         char buf[17*IEEE80211_NUM_ACS], *p = buf;
 113         int ac;
 114
 115         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 116                 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
 117                                skb_queue_len(&sta->ps_tx_buf[ac]) +
 118                                skb_queue_len(&sta->tx_filtered[ac]));
 119         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 120 }
 121 STA_OPS(num_ps_buf_frames);
 122
 123 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
 124                                       size_t count, loff_t *ppos)
 125 {
 126         char buf[15*IEEE80211_NUM_TIDS], *p = buf;
 127         int i;
 128         struct sta_info *sta = file->private_data;
 129         for (i = 0; i < IEEE80211_NUM_TIDS; i++)
 130                 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
 131                                le16_to_cpu(sta->last_seq_ctrl[i]));
 132         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 133         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 134 }
 135 STA_OPS(last_seq_ctrl);
 136
 137 #define AQM_TXQ_ENTRY_LEN 130
 138
 139 static ssize_t sta_aqm_read(struct file *file, char __user *userbuf,
 140                         size_t count, loff_t *ppos)
 141 {
 142         struct sta_info *sta = file->private_data;
 143         struct ieee80211_local *local = sta->local;
 144         size_t bufsz = AQM_TXQ_ENTRY_LEN * (IEEE80211_NUM_TIDS + 2);
 145         char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
 146         struct txq_info *txqi;
 147         ssize_t rv;
 148         int i;
 149
 150         if (!buf)
 151                 return -ENOMEM;
 152
 153         spin_lock_bh(&local->fq.lock);
 154         rcu_read_lock();
 155
 156         p += scnprintf(p,
 157                        bufsz+buf-p,
 158                        "target %uus interval %uus ecn %s\n",
 159                        codel_time_to_us(sta->cparams.target),
 160                        codel_time_to_us(sta->cparams.interval),
 161                        sta->cparams.ecn ? "yes" : "no");
 162         p += scnprintf(p,
 163                        bufsz+buf-p,
 164                        "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");
 165
 166         for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
 167                 if (!sta->sta.txq[i])
 168                         continue;
 169                 txqi = to_txq_info(sta->sta.txq[i]);
 170                 p += scnprintf(p, bufsz+buf-p,
 171                                "%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s)\n",
 172                                txqi->txq.tid,
 173                                txqi->txq.ac,
 174                                txqi->tin.backlog_bytes,
 175                                txqi->tin.backlog_packets,
 176                                txqi->tin.flows,
 177                                txqi->cstats.drop_count,
 178                                txqi->cstats.ecn_mark,
 179                                txqi->tin.overlimit,
 180                                txqi->tin.collisions,
 181                                txqi->tin.tx_bytes,
 182                                txqi->tin.tx_packets,
 183                                txqi->flags,
 184                                txqi->flags & (1<<IEEE80211_TXQ_STOP) ? "STOP" : "RUN",
 185                                txqi->flags & (1<<IEEE80211_TXQ_AMPDU) ? " AMPDU" : "",
 186                                txqi->flags & (1<<IEEE80211_TXQ_NO_AMSDU) ? " NO-AMSDU" : "");
 187         }
 188
 189         rcu_read_unlock();
 190         spin_unlock_bh(&local->fq.lock);
 191
 192         rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 193         kfree(buf);
 194         return rv;
 195 }
 196 STA_OPS(aqm);
 197
 198 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
 199                                         size_t count, loff_t *ppos)
 200 {
 201         char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
 202         int i;
 203         struct sta_info *sta = file->private_data;
 204         struct tid_ampdu_rx *tid_rx;
 205         struct tid_ampdu_tx *tid_tx;
 206
 207         rcu_read_lock();
 208
 209         p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
 210                         sta->ampdu_mlme.dialog_token_allocator + 1);
 211         p += scnprintf(p, sizeof(buf) + buf - p,
 212                        "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
 213
 214         for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
 215                 bool tid_rx_valid;
 216
 217                 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
 218                 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
 219                 tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);
 220
 221                 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
 222                 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
 223                                tid_rx_valid);
 224                 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
 225                                tid_rx_valid ?
 226                                         sta->ampdu_mlme.tid_rx_token[i] : 0);
 227                 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
 228                                 tid_rx ? tid_rx->ssn : 0);
 229
 230                 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
 231                 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
 232                                 tid_tx ? tid_tx->dialog_token : 0);
 233                 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
 234                                 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
 235                 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
 236         }
 237         rcu_read_unlock();
 238
 239         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 240 }
 241
 242 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
 243                                     size_t count, loff_t *ppos)
 244 {
 245         char _buf[25] = {}, *buf = _buf;
 246         struct sta_info *sta = file->private_data;
 247         bool start, tx;
 248         unsigned long tid;
 249         char *pos;
 250         int ret, timeout = 5000;
 251
 252         if (count > sizeof(_buf))
 253                 return -EINVAL;
 254
 255         if (copy_from_user(buf, userbuf, count))
 256                 return -EFAULT;
 257
 258         buf[sizeof(_buf) - 1] = '\0';
 259         pos = buf;
 260         buf = strsep(&pos, " ");
 261         if (!buf)
 262                 return -EINVAL;
 263
 264         if (!strcmp(buf, "tx"))
 265                 tx = true;
 266         else if (!strcmp(buf, "rx"))
 267                 tx = false;
 268         else
 269                 return -EINVAL;
 270
 271         buf = strsep(&pos, " ");
 272         if (!buf)
 273                 return -EINVAL;
 274         if (!strcmp(buf, "start")) {
 275                 start = true;
 276                 if (!tx)
 277                         return -EINVAL;
 278         } else if (!strcmp(buf, "stop")) {
 279                 start = false;
 280         } else {
 281                 return -EINVAL;
 282         }
 283
 284         buf = strsep(&pos, " ");
 285         if (!buf)
 286                 return -EINVAL;
 287         if (sscanf(buf, "timeout=%d", &timeout) == 1) {
 288                 buf = strsep(&pos, " ");
 289                 if (!buf || !tx || !start)
 290                         return -EINVAL;
 291         }
 292
 293         ret = kstrtoul(buf, 0, &tid);
 294         if (ret || tid >= IEEE80211_NUM_TIDS)
 295                 return -EINVAL;
 296
 297         if (tx) {
 298                 if (start)
 299                         ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
 300                                                             timeout);
 301                 else
 302                         ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
 303         } else {
 304                 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
 305                                                3, true);
 306                 ret = 0;
 307         }
 308
 309         return ret ?: count;
 310 }
 311 STA_OPS_RW(agg_status);
 312
 313 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
 314                                 size_t count, loff_t *ppos)
 315 {
 316 #define PRINT_HT_CAP(_cond, _str) \
 317         do { \
 318         if (_cond) \
 319                         p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
 320         } while (0)
 321         char buf[512], *p = buf;
 322         int i;
 323         struct sta_info *sta = file->private_data;
 324         struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
 325
 326         p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
 327                         htc->ht_supported ? "" : "not ");
 328         if (htc->ht_supported) {
 329                 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
 330
 331                 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
 332                 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
 333                 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
 334
 335                 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
 336                 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
 337                 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
 338
 339                 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
 340                 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
 341                 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
 342                 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
 343
 344                 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
 345                 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
 346                 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
 347                 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
 348
 349                 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
 350
 351                 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
 352                              "3839 bytes");
 353                 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
 354                              "7935 bytes");
 355
 356                 /*
 357                  * For beacons and probe response this would mean the BSS
 358                  * does or does not allow the usage of DSSS/CCK HT40.
 359                  * Otherwise it means the STA does or does not use
 360                  * DSSS/CCK HT40.
 361                  */
 362                 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
 363                 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
 364
 365                 /* BIT(13) is reserved */
 366
 367                 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
 368
 369                 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
 370
 371                 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
 372                                 htc->ampdu_factor, htc->ampdu_density);
 373                 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
 374
 375                 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
 376                         p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
 377                                         htc->mcs.rx_mask[i]);
 378                 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 379
 380                 /* If not set this is meaningless */
 381                 if (le16_to_cpu(htc->mcs.rx_highest)) {
 382                         p += scnprintf(p, sizeof(buf)+buf-p,
 383                                        "MCS rx highest: %d Mbps\n",
 384                                        le16_to_cpu(htc->mcs.rx_highest));
 385                 }
 386
 387                 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
 388                                 htc->mcs.tx_params);
 389         }
 390
 391         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 392 }
 393 STA_OPS(ht_capa);
 394
 395 static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf,
 396                                  size_t count, loff_t *ppos)
 397 {
 398         char buf[512], *p = buf;
 399         struct sta_info *sta = file->private_data;
 400         struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
 401
 402         p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
 403                         vhtc->vht_supported ? "" : "not ");
 404         if (vhtc->vht_supported) {
 405                 p += scnprintf(p, sizeof(buf) + buf - p, "cap: %#.8x\n",
 406                                vhtc->cap);
 407 #define PFLAG(a, b)                                                     \
 408                 do {                                                    \
 409                         if (vhtc->cap & IEEE80211_VHT_CAP_ ## a)        \
 410                                 p += scnprintf(p, sizeof(buf) + buf - p, \
 411                                                "\t\t%s\n", b);          \
 412                 } while (0)
 413
 414                 switch (vhtc->cap & 0x3) {
 415                 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
 416                         p += scnprintf(p, sizeof(buf) + buf - p,
 417                                        "\t\tMAX-MPDU-3895\n");
 418                         break;
 419                 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
 420                         p += scnprintf(p, sizeof(buf) + buf - p,
 421                                        "\t\tMAX-MPDU-7991\n");
 422                         break;
 423                 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
 424                         p += scnprintf(p, sizeof(buf) + buf - p,
 425                                        "\t\tMAX-MPDU-11454\n");
 426                         break;
 427                 default:
 428                         p += scnprintf(p, sizeof(buf) + buf - p,
 429                                        "\t\tMAX-MPDU-UNKNOWN\n");
 430                 }
 431                 switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
 432                 case 0:
 433                         p += scnprintf(p, sizeof(buf) + buf - p,
 434                                        "\t\t80Mhz\n");
 435                         break;
 436                 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
 437                         p += scnprintf(p, sizeof(buf) + buf - p,
 438                                        "\t\t160Mhz\n");
 439                         break;
 440                 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
 441                         p += scnprintf(p, sizeof(buf) + buf - p,
 442                                        "\t\t80+80Mhz\n");
 443                         break;
 444                 default:
 445                         p += scnprintf(p, sizeof(buf) + buf - p,
 446                                        "\t\tUNKNOWN-MHZ: 0x%x\n",
 447                                        (vhtc->cap >> 2) & 0x3);
 448                 }
 449                 PFLAG(RXLDPC, "RXLDPC");
 450                 PFLAG(SHORT_GI_80, "SHORT-GI-80");
 451                 PFLAG(SHORT_GI_160, "SHORT-GI-160");
 452                 PFLAG(TXSTBC, "TXSTBC");
 453                 p += scnprintf(p, sizeof(buf) + buf - p,
 454                                "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
 455                 PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
 456                 PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
 457                 p += scnprintf(p, sizeof(buf) + buf - p,
 458                         "\t\tBEAMFORMEE-STS: 0x%x\n",
 459                         (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
 460                         IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
 461                 p += scnprintf(p, sizeof(buf) + buf - p,
 462                         "\t\tSOUNDING-DIMENSIONS: 0x%x\n",
 463                         (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
 464                         >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
 465                 PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
 466                 PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
 467                 PFLAG(VHT_TXOP_PS, "TXOP-PS");
 468                 PFLAG(HTC_VHT, "HTC-VHT");
 469                 p += scnprintf(p, sizeof(buf) + buf - p,
 470                         "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
 471                         (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
 472                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
 473                 PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
 474                       "LINK-ADAPTATION-VHT-UNSOL-MFB");
 475                 p += scnprintf(p, sizeof(buf) + buf - p,
 476                         "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
 477                         (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
 478                 PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
 479                 PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
 480
 481                 p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
 482                                le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
 483                 if (vhtc->vht_mcs.rx_highest)
 484                         p += scnprintf(p, sizeof(buf)+buf-p,
 485                                        "MCS RX highest: %d Mbps\n",
 486                                        le16_to_cpu(vhtc->vht_mcs.rx_highest));
 487                 p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
 488                                le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
 489                 if (vhtc->vht_mcs.tx_highest)
 490                         p += scnprintf(p, sizeof(buf)+buf-p,
 491                                        "MCS TX highest: %d Mbps\n",
 492                                        le16_to_cpu(vhtc->vht_mcs.tx_highest));
 493 #undef PFLAG
 494         }
 495
 496         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 497 }
 498 STA_OPS(vht_capa);
 499
 500 static ssize_t sta_he_capa_read(struct file *file, char __user *userbuf,
 501                                 size_t count, loff_t *ppos)
 502 {
 503         char *buf, *p;
 504         size_t buf_sz = PAGE_SIZE;
 505         struct sta_info *sta = file->private_data;
 506         struct ieee80211_sta_he_cap *hec = &sta->sta.he_cap;
 507         struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp;
 508         u8 ppe_size;
 509         u8 *cap;
 510         int i;
 511         ssize_t ret;
 512
 513         buf = kmalloc(buf_sz, GFP_KERNEL);
 514         if (!buf)
 515                 return -ENOMEM;
 516         p = buf;
 517
 518         p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n",
 519                        hec->has_he ? "" : "not ");
 520         if (!hec->has_he)
 521                 goto out;
 522
 523         cap = hec->he_cap_elem.mac_cap_info;
 524         p += scnprintf(p, buf_sz + buf - p,
 525                        "MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
 526                        cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]);
 527
 528 #define PRINT(fmt, ...)                                                 \
 529         p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n",            \
 530                        ##__VA_ARGS__)
 531
 532 #define PFLAG(t, n, a, b)                                               \
 533         do {                                                            \
 534                 if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a)           \
 535                         PRINT("%s", b);                                 \
 536         } while (0)
 537
 538 #define PFLAG_RANGE(t, i, n, s, m, off, fmt)                            \
 539         do {                                                            \
 540                 u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK;        \
 541                 u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off;      \
 542                 PRINT(fmt, (s << idx) + (m * idx));                     \
 543         } while (0)
 544
 545 #define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b)              \
 546         do {                                                            \
 547                 if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) { \
 548                         PRINT("%s", b);                                 \
 549                         break;                                          \
 550                 }                                                       \
 551                 PFLAG_RANGE(t, i, n, s, m, off, fmt);                   \
 552         } while (0)
 553
 554         PFLAG(MAC, 0, HTC_HE, "HTC-HE");
 555         PFLAG(MAC, 0, TWT_REQ, "TWT-REQ");
 556         PFLAG(MAC, 0, TWT_RES, "TWT-RES");
 557         PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0,
 558                             "DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP");
 559         PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0,
 560                             "MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED");
 561
 562         PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1,
 563                             "MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED");
 564         PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0,
 565                             "TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN");
 566         PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1,
 567                     "MULTI-TID-AGG-RX-QOS-%d");
 568
 569         if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) {
 570                 switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) {
 571                 case 0:
 572                         PRINT("LINK-ADAPTATION-NO-FEEDBACK");
 573                         break;
 574                 case 1:
 575                         PRINT("LINK-ADAPTATION-RESERVED");
 576                         break;
 577                 case 2:
 578                         PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK");
 579                         break;
 580                 case 3:
 581                         PRINT("LINK-ADAPTATION-BOTH");
 582                         break;
 583                 }
 584         }
 585
 586         PFLAG(MAC, 2, ALL_ACK, "ALL-ACK");
 587         PFLAG(MAC, 2, TRS, "TRS");
 588         PFLAG(MAC, 2, BSR, "BSR");
 589         PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT");
 590         PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP");
 591         PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING");
 592         PFLAG(MAC, 2, ACK_EN, "ACK-EN");
 593
 594         PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL");
 595         PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA");
 596
 597         switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) {
 598         case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_USE_VHT:
 599                 PRINT("MAX-AMPDU-LEN-EXP-USE-VHT");
 600                 break;
 601         case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_1:
 602                 PRINT("MAX-AMPDU-LEN-EXP-VHT-1");
 603                 break;
 604         case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2:
 605                 PRINT("MAX-AMPDU-LEN-EXP-VHT-2");
 606                 break;
 607         case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_RESERVED:
 608                 PRINT("MAX-AMPDU-LEN-EXP-RESERVED");
 609                 break;
 610         }
 611
 612         PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG");
 613         PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED");
 614         PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS");
 615
 616         PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG");
 617         PFLAG(MAC, 4, QTP, "QTP");
 618         PFLAG(MAC, 4, BQR, "BQR");
 619         PFLAG(MAC, 4, SRP_RESP, "SRP-RESP");
 620         PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP");
 621         PFLAG(MAC, 4, OPS, "OPS");
 622         PFLAG(MAC, 4, AMDSU_IN_AMPDU, "AMSDU-IN-AMPDU");
 623
 624         PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7);
 625
 626         PFLAG(MAC, 5, SUBCHAN_SELECVITE_TRANSMISSION,
 627               "SUBCHAN-SELECVITE-TRANSMISSION");
 628         PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU");
 629         PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX");
 630
 631         cap = hec->he_cap_elem.phy_cap_info;
 632         p += scnprintf(p, buf_sz + buf - p,
 633                        "PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
 634                        cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6],
 635                        cap[7], cap[8], cap[9], cap[10]);
 636
 637         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G,
 638               "CHANNEL-WIDTH-SET-40MHZ-IN-2G");
 639         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G,
 640               "CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G");
 641         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G,
 642               "CHANNEL-WIDTH-SET-160MHZ-IN-5G");
 643         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
 644               "CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G");
 645         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G,
 646               "CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G");
 647         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G,
 648               "CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G");
 649
 650         switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) {
 651         case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ:
 652                 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ");
 653                 break;
 654         case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ:
 655                 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ");
 656                 break;
 657         case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ:
 658                 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ");
 659                 break;
 660         case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ:
 661                 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ");
 662                 break;
 663         }
 664
 665         PFLAG(PHY, 1, DEVICE_CLASS_A,
 666               "IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A");
 667         PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD,
 668               "LDPC-CODING-IN-PAYLOAD");
 669         PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US,
 670               "HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US");
 671         PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3);
 672
 673         PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US");
 674         PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ");
 675         PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ");
 676         PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX");
 677         PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX");
 678         PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO");
 679         PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO");
 680
 681         switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) {
 682         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM:
 683                 PRINT("DCM-MAX-CONST-TX-NO-DCM");
 684                 break;
 685         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK:
 686                 PRINT("DCM-MAX-CONST-TX-BPSK");
 687                 break;
 688         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK:
 689                 PRINT("DCM-MAX-CONST-TX-QPSK");
 690                 break;
 691         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM:
 692                 PRINT("DCM-MAX-CONST-TX-16-QAM");
 693                 break;
 694         }
 695
 696         PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1");
 697         PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2");
 698
 699         switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) {
 700         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM:
 701                 PRINT("DCM-MAX-CONST-RX-NO-DCM");
 702                 break;
 703         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK:
 704                 PRINT("DCM-MAX-CONST-RX-BPSK");
 705                 break;
 706         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK:
 707                 PRINT("DCM-MAX-CONST-RX-QPSK");
 708                 break;
 709         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM:
 710                 PRINT("DCM-MAX-CONST-RX-16-QAM");
 711                 break;
 712         }
 713
 714         PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1");
 715         PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2");
 716         PFLAG(PHY, 3, RX_HE_MU_PPDU_FROM_NON_AP_STA,
 717               "RX-HE-MU-PPDU-FROM-NON-AP-STA");
 718         PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER");
 719
 720         PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE");
 721         PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER");
 722
 723         PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4,
 724                     "BEAMFORMEE-MAX-STS-UNDER-%d");
 725         PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4,
 726                     "BEAMFORMEE-MAX-STS-ABOVE-%d");
 727
 728         PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1,
 729                     "NUM-SND-DIM-UNDER-80MHZ-%d");
 730         PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1,
 731                     "NUM-SND-DIM-ABOVE-80MHZ-%d");
 732         PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK");
 733         PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK");
 734
 735         PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU");
 736         PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU");
 737         PFLAG(PHY, 6, TRIG_SU_BEAMFORMER_FB, "TRIG-SU-BEAMFORMER-FB");
 738         PFLAG(PHY, 6, TRIG_MU_BEAMFORMER_FB, "TRIG-MU-BEAMFORMER-FB");
 739         PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB");
 740         PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE");
 741         PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO,
 742               "PARTIAL-BANDWIDTH-DL-MUMIMO");
 743         PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT");
 744
 745         PFLAG(PHY, 7, SRP_BASED_SR, "SRP-BASED-SR");
 746         PFLAG(PHY, 7, POWER_BOOST_FACTOR_AR, "POWER-BOOST-FACTOR-AR");
 747         PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI,
 748               "HE-SU-MU-PPDU-4XLTF-AND-08-US-GI");
 749         PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d");
 750         PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ");
 751         PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ");
 752
 753         PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI,
 754               "HE-ER-SU-PPDU-4XLTF-AND-08-US-GI");
 755         PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G,
 756               "20MHZ-IN-40MHZ-HE-PPDU-IN-2G");
 757         PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU");
 758         PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU");
 759         PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI,
 760               "HE-ER-SU-1XLTF-AND-08-US-GI");
 761         PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF,
 762               "MIDAMBLE-RX-TX-2X-AND-1XLTF");
 763
 764         switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_BW_MASK) {
 765         case IEEE80211_HE_PHY_CAP8_DCM_MAX_BW_20MHZ:
 766                 PRINT("DDCM-MAX-BW-20MHZ");
 767                 break;
 768         case IEEE80211_HE_PHY_CAP8_DCM_MAX_BW_40MHZ:
 769                 PRINT("DCM-MAX-BW-40MHZ");
 770                 break;
 771         case IEEE80211_HE_PHY_CAP8_DCM_MAX_BW_80MHZ:
 772                 PRINT("DCM-MAX-BW-80MHZ");
 773                 break;
 774         case IEEE80211_HE_PHY_CAP8_DCM_MAX_BW_160_OR_80P80_MHZ:
 775                 PRINT("DCM-MAX-BW-160-OR-80P80-MHZ");
 776                 break;
 777         }
 778
 779         PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM,
 780               "LONGER-THAN-16-SIGB-OFDM-SYM");
 781         PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK,
 782               "NON-TRIGGERED-CQI-FEEDBACK");
 783         PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU,
 784               "TX-1024-QAM-LESS-THAN-242-TONE-RU");
 785         PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU,
 786               "RX-1024-QAM-LESS-THAN-242-TONE-RU");
 787         PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB,
 788               "RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB");
 789         PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB,
 790               "RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB");
 791
 792 #undef PFLAG_RANGE_DEFAULT
 793 #undef PFLAG_RANGE
 794 #undef PFLAG
 795
 796 #define PRINT_NSS_SUPP(f, n)                                            \
 797         do {                                                            \
 798                 int i;                                                  \
 799                 u16 v = le16_to_cpu(nss->f);                            \
 800                 p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v);  \
 801                 for (i = 0; i < 8; i += 2) {                            \
 802                         switch ((v >> i) & 0x3) {                       \
 803                         case 0:                                         \
 804                                 PRINT(n "-%d-SUPPORT-0-7", i / 2);      \
 805                                 break;                                  \
 806                         case 1:                                         \
 807                                 PRINT(n "-%d-SUPPORT-0-9", i / 2);      \
 808                                 break;                                  \
 809                         case 2:                                         \
 810                                 PRINT(n "-%d-SUPPORT-0-11", i / 2);     \
 811                                 break;                                  \
 812                         case 3:                                         \
 813                                 PRINT(n "-%d-NOT-SUPPORTED", i / 2);    \
 814                                 break;                                  \
 815                         }                                               \
 816                 }                                                       \
 817         } while (0)
 818
 819         PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80");
 820         PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80");
 821
 822         if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) {
 823                 PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160");
 824                 PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160");
 825         }
 826
 827         if (cap[0] &
 828             IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
 829                 PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80");
 830                 PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80");
 831         }
 832
 833 #undef PRINT_NSS_SUPP
 834 #undef PRINT
 835
 836         if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT))
 837                 goto out;
 838
 839         p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x",
 840                        hec->ppe_thres[0]);
 841
 842         ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap);
 843         for (i = 1; i < ppe_size; i++) {
 844                 p += scnprintf(p, buf_sz + buf - p, " %#.2x",
 845                                hec->ppe_thres[i]);
 846         }
 847         p += scnprintf(p, buf_sz + buf - p, "\n");
 848
 849 out:
 850         ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 851         kfree(buf);
 852         return ret;
 853 }
 854 STA_OPS(he_capa);
 855
 856 #define DEBUGFS_ADD(name) \
 857         debugfs_create_file(#name, 0400, \
 858                 sta->debugfs_dir, sta, &sta_ ##name## _ops);
 859
 860 #define DEBUGFS_ADD_COUNTER(name, field)                                \
 861         if (sizeof(sta->field) == sizeof(u32))                          \
 862                 debugfs_create_u32(#name, 0400, sta->debugfs_dir,       \
 863                         (u32 *) &sta->field);                           \
 864         else                                                            \
 865                 debugfs_create_u64(#name, 0400, sta->debugfs_dir,       \
 866                         (u64 *) &sta->field);
 867
 868 void ieee80211_sta_debugfs_add(struct sta_info *sta)
 869 {
 870         struct ieee80211_local *local = sta->local;
 871         struct ieee80211_sub_if_data *sdata = sta->sdata;
 872         struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
 873         u8 mac[3*ETH_ALEN];
 874
 875         if (!stations_dir)
 876                 return;
 877
 878         snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
 879
 880         /*
 881          * This might fail due to a race condition:
 882          * When mac80211 unlinks a station, the debugfs entries
 883          * remain, but it is already possible to link a new
 884          * station with the same address which triggers adding
 885          * it to debugfs; therefore, if the old station isn't
 886          * destroyed quickly enough the old station's debugfs
 887          * dir might still be around.
 888          */
 889         sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
 890         if (!sta->debugfs_dir)
 891                 return;
 892
 893         DEBUGFS_ADD(flags);
 894         DEBUGFS_ADD(aid);
 895         DEBUGFS_ADD(num_ps_buf_frames);
 896         DEBUGFS_ADD(last_seq_ctrl);
 897         DEBUGFS_ADD(agg_status);
 898         DEBUGFS_ADD(ht_capa);
 899         DEBUGFS_ADD(vht_capa);
 900         DEBUGFS_ADD(he_capa);
 901
 902         DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
 903         DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
 904         DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered);
 905
 906         if (local->ops->wake_tx_queue)
 907                 DEBUGFS_ADD(aqm);
 908
 909         if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
 910                 debugfs_create_x32("driver_buffered_tids", 0400,
 911                                    sta->debugfs_dir,
 912                                    (u32 *)&sta->driver_buffered_tids);
 913         else
 914                 debugfs_create_x64("driver_buffered_tids", 0400,
 915                                    sta->debugfs_dir,
 916                                    (u64 *)&sta->driver_buffered_tids);
 917
 918         drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
 919 }
 920
 921 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
 922 {
 923         debugfs_remove_recursive(sta->debugfs_dir);
 924         sta->debugfs_dir = NULL;
 925 }