net/mac80211/debugfs_sta.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2003-2005  Devicescape Software, Inc.
   4  * Copyright (c) 2006   Jiri Benc <jbenc@suse.cz>
   5  * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright(c) 2016 Intel Deutschland GmbH
   8  * Copyright (C) 2018 - 2021 Intel Corporation
   9  */
  10
  11 #include <linux/debugfs.h>
  12 #include <linux/ieee80211.h>
  13 #include "ieee80211_i.h"
  14 #include "debugfs.h"
  15 #include "debugfs_sta.h"
  16 #include "sta_info.h"
  17 #include "driver-ops.h"
  18
  19 /* sta attributtes */
  20
  21 #define STA_READ(name, field, format_string)                            \
  22 static ssize_t sta_ ##name## _read(struct file *file,                   \
  23                                    char __user *userbuf,                \
  24                                    size_t count, loff_t *ppos)          \
  25 {                                                                       \
  26         struct sta_info *sta = file->private_data;                      \
  27         return mac80211_format_buffer(userbuf, count, ppos,             \
  28                                       format_string, sta->field);       \
  29 }
  30 #define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
  31
  32 #define STA_OPS(name)                                                   \
  33 static const struct file_operations sta_ ##name## _ops = {              \
  34         .read = sta_##name##_read,                                      \
  35         .open = simple_open,                                            \
  36         .llseek = generic_file_llseek,                                  \
  37 }
  38
  39 #define STA_OPS_RW(name)                                                \
  40 static const struct file_operations sta_ ##name## _ops = {              \
  41         .read = sta_##name##_read,                                      \
  42         .write = sta_##name##_write,                                    \
  43         .open = simple_open,                                            \
  44         .llseek = generic_file_llseek,                                  \
  45 }
  46
  47 #define STA_FILE(name, field, format)                                   \
  48                 STA_READ_##format(name, field)                          \
  49                 STA_OPS(name)
  50
  51 STA_FILE(aid, sta.aid, D);
  52
  53 static const char * const sta_flag_names[] = {
  54 #define FLAG(F) [WLAN_STA_##F] = #F
  55         FLAG(AUTH),
  56         FLAG(ASSOC),
  57         FLAG(PS_STA),
  58         FLAG(AUTHORIZED),
  59         FLAG(SHORT_PREAMBLE),
  60         FLAG(WDS),
  61         FLAG(CLEAR_PS_FILT),
  62         FLAG(MFP),
  63         FLAG(BLOCK_BA),
  64         FLAG(PS_DRIVER),
  65         FLAG(PSPOLL),
  66         FLAG(TDLS_PEER),
  67         FLAG(TDLS_PEER_AUTH),
  68         FLAG(TDLS_INITIATOR),
  69         FLAG(TDLS_CHAN_SWITCH),
  70         FLAG(TDLS_OFF_CHANNEL),
  71         FLAG(TDLS_WIDER_BW),
  72         FLAG(UAPSD),
  73         FLAG(SP),
  74         FLAG(4ADDR_EVENT),
  75         FLAG(INSERTED),
  76         FLAG(RATE_CONTROL),
  77         FLAG(TOFFSET_KNOWN),
  78         FLAG(MPSP_OWNER),
  79         FLAG(MPSP_RECIPIENT),
  80         FLAG(PS_DELIVER),
  81         FLAG(USES_ENCRYPTION),
  82         FLAG(DECAP_OFFLOAD),
  83 #undef FLAG
  84 };
  85
  86 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
  87                               size_t count, loff_t *ppos)
  88 {
  89         char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
  90         char *end = buf + sizeof(buf) - 1;
  91         struct sta_info *sta = file->private_data;
  92         unsigned int flg;
  93
  94         BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);
  95
  96         for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
  97                 if (test_sta_flag(sta, flg))
  98                         pos += scnprintf(pos, end - pos, "%s\n",
  99                                          sta_flag_names[flg]);
 100         }
 101
 102         return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
 103 }
 104 STA_OPS(flags);
 105
 106 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
 107                                           char __user *userbuf,
 108                                           size_t count, loff_t *ppos)
 109 {
 110         struct sta_info *sta = file->private_data;
 111         char buf[17*IEEE80211_NUM_ACS], *p = buf;
 112         int ac;
 113
 114         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 115                 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
 116                                skb_queue_len(&sta->ps_tx_buf[ac]) +
 117                                skb_queue_len(&sta->tx_filtered[ac]));
 118         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 119 }
 120 STA_OPS(num_ps_buf_frames);
 121
 122 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
 123                                       size_t count, loff_t *ppos)
 124 {
 125         char buf[15*IEEE80211_NUM_TIDS], *p = buf;
 126         int i;
 127         struct sta_info *sta = file->private_data;
 128         for (i = 0; i < IEEE80211_NUM_TIDS; i++)
 129                 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
 130                                le16_to_cpu(sta->last_seq_ctrl[i]));
 131         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 132         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 133 }
 134 STA_OPS(last_seq_ctrl);
 135
 136 #define AQM_TXQ_ENTRY_LEN 130
 137
 138 static ssize_t sta_aqm_read(struct file *file, char __user *userbuf,
 139                         size_t count, loff_t *ppos)
 140 {
 141         struct sta_info *sta = file->private_data;
 142         struct ieee80211_local *local = sta->local;
 143         size_t bufsz = AQM_TXQ_ENTRY_LEN * (IEEE80211_NUM_TIDS + 2);
 144         char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
 145         struct txq_info *txqi;
 146         ssize_t rv;
 147         int i;
 148
 149         if (!buf)
 150                 return -ENOMEM;
 151
 152         spin_lock_bh(&local->fq.lock);
 153         rcu_read_lock();
 154
 155         p += scnprintf(p,
 156                        bufsz + buf - p,
 157                        "target %uus interval %uus ecn %s\n",
 158                        codel_time_to_us(sta->cparams.target),
 159                        codel_time_to_us(sta->cparams.interval),
 160                        sta->cparams.ecn ? "yes" : "no");
 161         p += scnprintf(p,
 162                        bufsz + buf - p,
 163                        "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");
 164
 165         for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
 166                 if (!sta->sta.txq[i])
 167                         continue;
 168                 txqi = to_txq_info(sta->sta.txq[i]);
 169                 p += scnprintf(p, bufsz + buf - p,
 170                                "%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s)\n",
 171                                txqi->txq.tid,
 172                                txqi->txq.ac,
 173                                txqi->tin.backlog_bytes,
 174                                txqi->tin.backlog_packets,
 175                                txqi->tin.flows,
 176                                txqi->cstats.drop_count,
 177                                txqi->cstats.ecn_mark,
 178                                txqi->tin.overlimit,
 179                                txqi->tin.collisions,
 180                                txqi->tin.tx_bytes,
 181                                txqi->tin.tx_packets,
 182                                txqi->flags,
 183                                test_bit(IEEE80211_TXQ_STOP, &txqi->flags) ? "STOP" : "RUN",
 184                                test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags) ? " AMPDU" : "",
 185                                test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags) ? " NO-AMSDU" : "");
 186         }
 187
 188         rcu_read_unlock();
 189         spin_unlock_bh(&local->fq.lock);
 190
 191         rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 192         kfree(buf);
 193         return rv;
 194 }
 195 STA_OPS(aqm);
 196
 197 static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
 198                                 size_t count, loff_t *ppos)
 199 {
 200         struct sta_info *sta = file->private_data;
 201         struct ieee80211_local *local = sta->sdata->local;
 202         size_t bufsz = 400;
 203         char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
 204         u64 rx_airtime = 0, tx_airtime = 0;
 205         s32 deficit[IEEE80211_NUM_ACS];
 206         ssize_t rv;
 207         int ac;
 208
 209         if (!buf)
 210                 return -ENOMEM;
 211
 212         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 213                 spin_lock_bh(&local->active_txq_lock[ac]);
 214                 rx_airtime += sta->airtime[ac].rx_airtime;
 215                 tx_airtime += sta->airtime[ac].tx_airtime;
 216                 deficit[ac] = sta->airtime[ac].deficit;
 217                 spin_unlock_bh(&local->active_txq_lock[ac]);
 218         }
 219
 220         p += scnprintf(p, bufsz + buf - p,
 221                 "RX: %llu us\nTX: %llu us\nWeight: %u\n"
 222                 "Deficit: VO: %d us VI: %d us BE: %d us BK: %d us\n",
 223                 rx_airtime, tx_airtime, sta->airtime_weight,
 224                 deficit[0], deficit[1], deficit[2], deficit[3]);
 225
 226         rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 227         kfree(buf);
 228         return rv;
 229 }
 230
 231 static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
 232                                  size_t count, loff_t *ppos)
 233 {
 234         struct sta_info *sta = file->private_data;
 235         struct ieee80211_local *local = sta->sdata->local;
 236         int ac;
 237
 238         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 239                 spin_lock_bh(&local->active_txq_lock[ac]);
 240                 sta->airtime[ac].rx_airtime = 0;
 241                 sta->airtime[ac].tx_airtime = 0;
 242                 sta->airtime[ac].deficit = sta->airtime_weight;
 243                 spin_unlock_bh(&local->active_txq_lock[ac]);
 244         }
 245
 246         return count;
 247 }
 248 STA_OPS_RW(airtime);
 249
 250 static ssize_t sta_aql_read(struct file *file, char __user *userbuf,
 251                                 size_t count, loff_t *ppos)
 252 {
 253         struct sta_info *sta = file->private_data;
 254         struct ieee80211_local *local = sta->sdata->local;
 255         size_t bufsz = 400;
 256         char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
 257         u32 q_depth[IEEE80211_NUM_ACS];
 258         u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS];
 259         ssize_t rv;
 260         int ac;
 261
 262         if (!buf)
 263                 return -ENOMEM;
 264
 265         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 266                 spin_lock_bh(&local->active_txq_lock[ac]);
 267                 q_limit_l[ac] = sta->airtime[ac].aql_limit_low;
 268                 q_limit_h[ac] = sta->airtime[ac].aql_limit_high;
 269                 spin_unlock_bh(&local->active_txq_lock[ac]);
 270                 q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending);
 271         }
 272
 273         p += scnprintf(p, bufsz + buf - p,
 274                 "Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n"
 275                 "Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n",
 276                 q_depth[0], q_depth[1], q_depth[2], q_depth[3],
 277                 q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1],
 278                 q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]);
 279
 280         rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 281         kfree(buf);
 282         return rv;
 283 }
 284
 285 static ssize_t sta_aql_write(struct file *file, const char __user *userbuf,
 286                                  size_t count, loff_t *ppos)
 287 {
 288         struct sta_info *sta = file->private_data;
 289         u32 ac, q_limit_l, q_limit_h;
 290         char _buf[100] = {}, *buf = _buf;
 291
 292         if (count > sizeof(_buf))
 293                 return -EINVAL;
 294
 295         if (copy_from_user(buf, userbuf, count))
 296                 return -EFAULT;
 297
 298         buf[sizeof(_buf) - 1] = '\0';
 299         if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h)
 300             != 3)
 301                 return -EINVAL;
 302
 303         if (ac >= IEEE80211_NUM_ACS)
 304                 return -EINVAL;
 305
 306         sta->airtime[ac].aql_limit_low = q_limit_l;
 307         sta->airtime[ac].aql_limit_high = q_limit_h;
 308
 309         return count;
 310 }
 311 STA_OPS_RW(aql);
 312
 313
 314 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
 315                                         size_t count, loff_t *ppos)
 316 {
 317         char *buf, *p;
 318         ssize_t bufsz = 71 + IEEE80211_NUM_TIDS * 40;
 319         int i;
 320         struct sta_info *sta = file->private_data;
 321         struct tid_ampdu_rx *tid_rx;
 322         struct tid_ampdu_tx *tid_tx;
 323         ssize_t ret;
 324
 325         buf = kzalloc(bufsz, GFP_KERNEL);
 326         if (!buf)
 327                 return -ENOMEM;
 328         p = buf;
 329
 330         rcu_read_lock();
 331
 332         p += scnprintf(p, bufsz + buf - p, "next dialog_token: %#02x\n",
 333                         sta->ampdu_mlme.dialog_token_allocator + 1);
 334         p += scnprintf(p, bufsz + buf - p,
 335                        "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
 336
 337         for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
 338                 bool tid_rx_valid;
 339
 340                 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
 341                 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
 342                 tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);
 343
 344                 p += scnprintf(p, bufsz + buf - p, "%02d", i);
 345                 p += scnprintf(p, bufsz + buf - p, "\t\t%x",
 346                                tid_rx_valid);
 347                 p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
 348                                tid_rx_valid ?
 349                                         sta->ampdu_mlme.tid_rx_token[i] : 0);
 350                 p += scnprintf(p, bufsz + buf - p, "\t%#.3x",
 351                                 tid_rx ? tid_rx->ssn : 0);
 352
 353                 p += scnprintf(p, bufsz + buf - p, "\t\t%x", !!tid_tx);
 354                 p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
 355                                 tid_tx ? tid_tx->dialog_token : 0);
 356                 p += scnprintf(p, bufsz + buf - p, "\t%03d",
 357                                 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
 358                 p += scnprintf(p, bufsz + buf - p, "\n");
 359         }
 360         rcu_read_unlock();
 361
 362         ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 363         kfree(buf);
 364         return ret;
 365 }
 366
 367 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
 368                                     size_t count, loff_t *ppos)
 369 {
 370         char _buf[25] = {}, *buf = _buf;
 371         struct sta_info *sta = file->private_data;
 372         bool start, tx;
 373         unsigned long tid;
 374         char *pos;
 375         int ret, timeout = 5000;
 376
 377         if (count > sizeof(_buf))
 378                 return -EINVAL;
 379
 380         if (copy_from_user(buf, userbuf, count))
 381                 return -EFAULT;
 382
 383         buf[sizeof(_buf) - 1] = '\0';
 384         pos = buf;
 385         buf = strsep(&pos, " ");
 386         if (!buf)
 387                 return -EINVAL;
 388
 389         if (!strcmp(buf, "tx"))
 390                 tx = true;
 391         else if (!strcmp(buf, "rx"))
 392                 tx = false;
 393         else
 394                 return -EINVAL;
 395
 396         buf = strsep(&pos, " ");
 397         if (!buf)
 398                 return -EINVAL;
 399         if (!strcmp(buf, "start")) {
 400                 start = true;
 401                 if (!tx)
 402                         return -EINVAL;
 403         } else if (!strcmp(buf, "stop")) {
 404                 start = false;
 405         } else {
 406                 return -EINVAL;
 407         }
 408
 409         buf = strsep(&pos, " ");
 410         if (!buf)
 411                 return -EINVAL;
 412         if (sscanf(buf, "timeout=%d", &timeout) == 1) {
 413                 buf = strsep(&pos, " ");
 414                 if (!buf || !tx || !start)
 415                         return -EINVAL;
 416         }
 417
 418         ret = kstrtoul(buf, 0, &tid);
 419         if (ret || tid >= IEEE80211_NUM_TIDS)
 420                 return -EINVAL;
 421
 422         if (tx) {
 423                 if (start)
 424                         ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
 425                                                             timeout);
 426                 else
 427                         ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
 428         } else {
 429                 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
 430                                                3, true);
 431                 ret = 0;
 432         }
 433
 434         return ret ?: count;
 435 }
 436 STA_OPS_RW(agg_status);
 437
 438 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
 439                                 size_t count, loff_t *ppos)
 440 {
 441 #define PRINT_HT_CAP(_cond, _str) \
 442         do { \
 443         if (_cond) \
 444                         p += scnprintf(p, bufsz + buf - p, "\t" _str "\n"); \
 445         } while (0)
 446         char *buf, *p;
 447         int i;
 448         ssize_t bufsz = 512;
 449         struct sta_info *sta = file->private_data;
 450         struct ieee80211_sta_ht_cap *htc = &sta->sta.deflink.ht_cap;
 451         ssize_t ret;
 452
 453         buf = kzalloc(bufsz, GFP_KERNEL);
 454         if (!buf)
 455                 return -ENOMEM;
 456         p = buf;
 457
 458         p += scnprintf(p, bufsz + buf - p, "ht %ssupported\n",
 459                         htc->ht_supported ? "" : "not ");
 460         if (htc->ht_supported) {
 461                 p += scnprintf(p, bufsz + buf - p, "cap: %#.4x\n", htc->cap);
 462
 463                 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
 464                 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
 465                 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
 466
 467                 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
 468                 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
 469                 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
 470
 471                 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
 472                 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
 473                 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
 474                 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
 475
 476                 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
 477                 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
 478                 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
 479                 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
 480
 481                 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
 482
 483                 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
 484                              "3839 bytes");
 485                 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
 486                              "7935 bytes");
 487
 488                 /*
 489                  * For beacons and probe response this would mean the BSS
 490                  * does or does not allow the usage of DSSS/CCK HT40.
 491                  * Otherwise it means the STA does or does not use
 492                  * DSSS/CCK HT40.
 493                  */
 494                 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
 495                 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
 496
 497                 /* BIT(13) is reserved */
 498
 499                 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
 500
 501                 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
 502
 503                 p += scnprintf(p, bufsz + buf - p, "ampdu factor/density: %d/%d\n",
 504                                 htc->ampdu_factor, htc->ampdu_density);
 505                 p += scnprintf(p, bufsz + buf - p, "MCS mask:");
 506
 507                 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
 508                         p += scnprintf(p, bufsz + buf - p, " %.2x",
 509                                         htc->mcs.rx_mask[i]);
 510                 p += scnprintf(p, bufsz + buf - p, "\n");
 511
 512                 /* If not set this is meaningless */
 513                 if (le16_to_cpu(htc->mcs.rx_highest)) {
 514                         p += scnprintf(p, bufsz + buf - p,
 515                                        "MCS rx highest: %d Mbps\n",
 516                                        le16_to_cpu(htc->mcs.rx_highest));
 517                 }
 518
 519                 p += scnprintf(p, bufsz + buf - p, "MCS tx params: %x\n",
 520                                 htc->mcs.tx_params);
 521         }
 522
 523         ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 524         kfree(buf);
 525         return ret;
 526 }
 527 STA_OPS(ht_capa);
 528
 529 static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf,
 530                                  size_t count, loff_t *ppos)
 531 {
 532         char *buf, *p;
 533         struct sta_info *sta = file->private_data;
 534         struct ieee80211_sta_vht_cap *vhtc = &sta->sta.deflink.vht_cap;
 535         ssize_t ret;
 536         ssize_t bufsz = 512;
 537
 538         buf = kzalloc(bufsz, GFP_KERNEL);
 539         if (!buf)
 540                 return -ENOMEM;
 541         p = buf;
 542
 543         p += scnprintf(p, bufsz + buf - p, "VHT %ssupported\n",
 544                         vhtc->vht_supported ? "" : "not ");
 545         if (vhtc->vht_supported) {
 546                 p += scnprintf(p, bufsz + buf - p, "cap: %#.8x\n",
 547                                vhtc->cap);
 548 #define PFLAG(a, b)                                                     \
 549                 do {                                                    \
 550                         if (vhtc->cap & IEEE80211_VHT_CAP_ ## a)        \
 551                                 p += scnprintf(p, bufsz + buf - p, \
 552                                                "\t\t%s\n", b);          \
 553                 } while (0)
 554
 555                 switch (vhtc->cap & 0x3) {
 556                 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
 557                         p += scnprintf(p, bufsz + buf - p,
 558                                        "\t\tMAX-MPDU-3895\n");
 559                         break;
 560                 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
 561                         p += scnprintf(p, bufsz + buf - p,
 562                                        "\t\tMAX-MPDU-7991\n");
 563                         break;
 564                 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
 565                         p += scnprintf(p, bufsz + buf - p,
 566                                        "\t\tMAX-MPDU-11454\n");
 567                         break;
 568                 default:
 569                         p += scnprintf(p, bufsz + buf - p,
 570                                        "\t\tMAX-MPDU-UNKNOWN\n");
 571                 }
 572                 switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
 573                 case 0:
 574                         p += scnprintf(p, bufsz + buf - p,
 575                                        "\t\t80Mhz\n");
 576                         break;
 577                 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
 578                         p += scnprintf(p, bufsz + buf - p,
 579                                        "\t\t160Mhz\n");
 580                         break;
 581                 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
 582                         p += scnprintf(p, bufsz + buf - p,
 583                                        "\t\t80+80Mhz\n");
 584                         break;
 585                 default:
 586                         p += scnprintf(p, bufsz + buf - p,
 587                                        "\t\tUNKNOWN-MHZ: 0x%x\n",
 588                                        (vhtc->cap >> 2) & 0x3);
 589                 }
 590                 PFLAG(RXLDPC, "RXLDPC");
 591                 PFLAG(SHORT_GI_80, "SHORT-GI-80");
 592                 PFLAG(SHORT_GI_160, "SHORT-GI-160");
 593                 PFLAG(TXSTBC, "TXSTBC");
 594                 p += scnprintf(p, bufsz + buf - p,
 595                                "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
 596                 PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
 597                 PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
 598                 p += scnprintf(p, bufsz + buf - p,
 599                         "\t\tBEAMFORMEE-STS: 0x%x\n",
 600                         (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
 601                         IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
 602                 p += scnprintf(p, bufsz + buf - p,
 603                         "\t\tSOUNDING-DIMENSIONS: 0x%x\n",
 604                         (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
 605                         >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
 606                 PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
 607                 PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
 608                 PFLAG(VHT_TXOP_PS, "TXOP-PS");
 609                 PFLAG(HTC_VHT, "HTC-VHT");
 610                 p += scnprintf(p, bufsz + buf - p,
 611                         "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
 612                         (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
 613                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
 614                 PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
 615                       "LINK-ADAPTATION-VHT-UNSOL-MFB");
 616                 p += scnprintf(p, bufsz + buf - p,
 617                         "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
 618                         (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
 619                 PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
 620                 PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
 621
 622                 p += scnprintf(p, bufsz + buf - p, "RX MCS: %.4x\n",
 623                                le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
 624                 if (vhtc->vht_mcs.rx_highest)
 625                         p += scnprintf(p, bufsz + buf - p,
 626                                        "MCS RX highest: %d Mbps\n",
 627                                        le16_to_cpu(vhtc->vht_mcs.rx_highest));
 628                 p += scnprintf(p, bufsz + buf - p, "TX MCS: %.4x\n",
 629                                le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
 630                 if (vhtc->vht_mcs.tx_highest)
 631                         p += scnprintf(p, bufsz + buf - p,
 632                                        "MCS TX highest: %d Mbps\n",
 633                                        le16_to_cpu(vhtc->vht_mcs.tx_highest));
 634 #undef PFLAG
 635         }
 636
 637         ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 638         kfree(buf);
 639         return ret;
 640 }
 641 STA_OPS(vht_capa);
 642
 643 static ssize_t sta_he_capa_read(struct file *file, char __user *userbuf,
 644                                 size_t count, loff_t *ppos)
 645 {
 646         char *buf, *p;
 647         size_t buf_sz = PAGE_SIZE;
 648         struct sta_info *sta = file->private_data;
 649         struct ieee80211_sta_he_cap *hec = &sta->sta.deflink.he_cap;
 650         struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp;
 651         u8 ppe_size;
 652         u8 *cap;
 653         int i;
 654         ssize_t ret;
 655
 656         buf = kmalloc(buf_sz, GFP_KERNEL);
 657         if (!buf)
 658                 return -ENOMEM;
 659         p = buf;
 660
 661         p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n",
 662                        hec->has_he ? "" : "not ");
 663         if (!hec->has_he)
 664                 goto out;
 665
 666         cap = hec->he_cap_elem.mac_cap_info;
 667         p += scnprintf(p, buf_sz + buf - p,
 668                        "MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
 669                        cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]);
 670
 671 #define PRINT(fmt, ...)                                                 \
 672         p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n",            \
 673                        ##__VA_ARGS__)
 674
 675 #define PFLAG(t, n, a, b)                                               \
 676         do {                                                            \
 677                 if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a)           \
 678                         PRINT("%s", b);                                 \
 679         } while (0)
 680
 681 #define PFLAG_RANGE(t, i, n, s, m, off, fmt)                            \
 682         do {                                                            \
 683                 u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK;        \
 684                 u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off;      \
 685                 PRINT(fmt, (s << idx) + (m * idx));                     \
 686         } while (0)
 687
 688 #define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b)              \
 689         do {                                                            \
 690                 if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) { \
 691                         PRINT("%s", b);                                 \
 692                         break;                                          \
 693                 }                                                       \
 694                 PFLAG_RANGE(t, i, n, s, m, off, fmt);                   \
 695         } while (0)
 696
 697         PFLAG(MAC, 0, HTC_HE, "HTC-HE");
 698         PFLAG(MAC, 0, TWT_REQ, "TWT-REQ");
 699         PFLAG(MAC, 0, TWT_RES, "TWT-RES");
 700         PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0,
 701                             "DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP");
 702         PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0,
 703                             "MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED");
 704
 705         PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1,
 706                             "MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED");
 707         PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0,
 708                             "TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN");
 709         PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1,
 710                     "MULTI-TID-AGG-RX-QOS-%d");
 711
 712         if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) {
 713                 switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) {
 714                 case 0:
 715                         PRINT("LINK-ADAPTATION-NO-FEEDBACK");
 716                         break;
 717                 case 1:
 718                         PRINT("LINK-ADAPTATION-RESERVED");
 719                         break;
 720                 case 2:
 721                         PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK");
 722                         break;
 723                 case 3:
 724                         PRINT("LINK-ADAPTATION-BOTH");
 725                         break;
 726                 }
 727         }
 728
 729         PFLAG(MAC, 2, ALL_ACK, "ALL-ACK");
 730         PFLAG(MAC, 2, TRS, "TRS");
 731         PFLAG(MAC, 2, BSR, "BSR");
 732         PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT");
 733         PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP");
 734         PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING");
 735         PFLAG(MAC, 2, ACK_EN, "ACK-EN");
 736
 737         PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL");
 738         PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA");
 739
 740         switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) {
 741         case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_0:
 742                 PRINT("MAX-AMPDU-LEN-EXP-USE-EXT-0");
 743                 break;
 744         case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_1:
 745                 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-1");
 746                 break;
 747         case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_2:
 748                 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-2");
 749                 break;
 750         case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3:
 751                 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-3");
 752                 break;
 753         }
 754
 755         PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG");
 756         PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED");
 757         PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS");
 758
 759         PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG");
 760         PFLAG(MAC, 4, QTP, "QTP");
 761         PFLAG(MAC, 4, BQR, "BQR");
 762         PFLAG(MAC, 4, PSR_RESP, "PSR-RESP");
 763         PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP");
 764         PFLAG(MAC, 4, OPS, "OPS");
 765         PFLAG(MAC, 4, AMSDU_IN_AMPDU, "AMSDU-IN-AMPDU");
 766
 767         PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7);
 768
 769         PFLAG(MAC, 5, SUBCHAN_SELECTIVE_TRANSMISSION,
 770               "SUBCHAN-SELECTIVE-TRANSMISSION");
 771         PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU");
 772         PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX");
 773         PFLAG(MAC, 5, HE_DYNAMIC_SM_PS, "HE-DYNAMIC-SM-PS");
 774         PFLAG(MAC, 5, PUNCTURED_SOUNDING, "PUNCTURED-SOUNDING");
 775         PFLAG(MAC, 5, HT_VHT_TRIG_FRAME_RX, "HT-VHT-TRIG-FRAME-RX");
 776
 777         cap = hec->he_cap_elem.phy_cap_info;
 778         p += scnprintf(p, buf_sz + buf - p,
 779                        "PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
 780                        cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6],
 781                        cap[7], cap[8], cap[9], cap[10]);
 782
 783         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G,
 784               "CHANNEL-WIDTH-SET-40MHZ-IN-2G");
 785         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G,
 786               "CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G");
 787         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G,
 788               "CHANNEL-WIDTH-SET-160MHZ-IN-5G");
 789         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
 790               "CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G");
 791         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G,
 792               "CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G");
 793         PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G,
 794               "CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G");
 795
 796         switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) {
 797         case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ:
 798                 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ");
 799                 break;
 800         case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ:
 801                 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ");
 802                 break;
 803         case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ:
 804                 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ");
 805                 break;
 806         case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ:
 807                 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ");
 808                 break;
 809         }
 810
 811         PFLAG(PHY, 1, DEVICE_CLASS_A,
 812               "IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A");
 813         PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD,
 814               "LDPC-CODING-IN-PAYLOAD");
 815         PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US,
 816               "HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US");
 817         PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3);
 818
 819         PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US");
 820         PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ");
 821         PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ");
 822         PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX");
 823         PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX");
 824         PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO");
 825         PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO");
 826
 827         switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) {
 828         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM:
 829                 PRINT("DCM-MAX-CONST-TX-NO-DCM");
 830                 break;
 831         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK:
 832                 PRINT("DCM-MAX-CONST-TX-BPSK");
 833                 break;
 834         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK:
 835                 PRINT("DCM-MAX-CONST-TX-QPSK");
 836                 break;
 837         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM:
 838                 PRINT("DCM-MAX-CONST-TX-16-QAM");
 839                 break;
 840         }
 841
 842         PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1");
 843         PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2");
 844
 845         switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) {
 846         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM:
 847                 PRINT("DCM-MAX-CONST-RX-NO-DCM");
 848                 break;
 849         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK:
 850                 PRINT("DCM-MAX-CONST-RX-BPSK");
 851                 break;
 852         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK:
 853                 PRINT("DCM-MAX-CONST-RX-QPSK");
 854                 break;
 855         case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM:
 856                 PRINT("DCM-MAX-CONST-RX-16-QAM");
 857                 break;
 858         }
 859
 860         PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1");
 861         PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2");
 862         PFLAG(PHY, 3, RX_PARTIAL_BW_SU_IN_20MHZ_MU,
 863               "RX-PARTIAL-BW-SU-IN-20MHZ-MU");
 864         PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER");
 865
 866         PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE");
 867         PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER");
 868
 869         PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4,
 870                     "BEAMFORMEE-MAX-STS-UNDER-%d");
 871         PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4,
 872                     "BEAMFORMEE-MAX-STS-ABOVE-%d");
 873
 874         PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1,
 875                     "NUM-SND-DIM-UNDER-80MHZ-%d");
 876         PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1,
 877                     "NUM-SND-DIM-ABOVE-80MHZ-%d");
 878         PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK");
 879         PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK");
 880
 881         PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU");
 882         PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU");
 883         PFLAG(PHY, 6, TRIG_SU_BEAMFORMING_FB, "TRIG-SU-BEAMFORMING-FB");
 884         PFLAG(PHY, 6, TRIG_MU_BEAMFORMING_PARTIAL_BW_FB,
 885               "MU-BEAMFORMING-PARTIAL-BW-FB");
 886         PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB");
 887         PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE");
 888         PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO,
 889               "PARTIAL-BANDWIDTH-DL-MUMIMO");
 890         PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT");
 891
 892         PFLAG(PHY, 7, PSR_BASED_SR, "PSR-BASED-SR");
 893         PFLAG(PHY, 7, POWER_BOOST_FACTOR_SUPP, "POWER-BOOST-FACTOR-SUPP");
 894         PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI,
 895               "HE-SU-MU-PPDU-4XLTF-AND-08-US-GI");
 896         PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d");
 897         PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ");
 898         PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ");
 899
 900         PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI,
 901               "HE-ER-SU-PPDU-4XLTF-AND-08-US-GI");
 902         PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G,
 903               "20MHZ-IN-40MHZ-HE-PPDU-IN-2G");
 904         PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU");
 905         PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU");
 906         PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI,
 907               "HE-ER-SU-1XLTF-AND-08-US-GI");
 908         PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF,
 909               "MIDAMBLE-RX-TX-2X-AND-1XLTF");
 910
 911         switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK) {
 912         case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242:
 913                 PRINT("DCM-MAX-RU-242");
 914                 break;
 915         case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484:
 916                 PRINT("DCM-MAX-RU-484");
 917                 break;
 918         case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996:
 919                 PRINT("DCM-MAX-RU-996");
 920                 break;
 921         case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996:
 922                 PRINT("DCM-MAX-RU-2x996");
 923                 break;
 924         }
 925
 926         PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM,
 927               "LONGER-THAN-16-SIGB-OFDM-SYM");
 928         PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK,
 929               "NON-TRIGGERED-CQI-FEEDBACK");
 930         PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU,
 931               "TX-1024-QAM-LESS-THAN-242-TONE-RU");
 932         PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU,
 933               "RX-1024-QAM-LESS-THAN-242-TONE-RU");
 934         PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB,
 935               "RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB");
 936         PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB,
 937               "RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB");
 938
 939         switch (u8_get_bits(cap[9],
 940                             IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK)) {
 941         case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US:
 942                 PRINT("NOMINAL-PACKET-PADDING-0US");
 943                 break;
 944         case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US:
 945                 PRINT("NOMINAL-PACKET-PADDING-8US");
 946                 break;
 947         case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US:
 948                 PRINT("NOMINAL-PACKET-PADDING-16US");
 949                 break;
 950         }
 951
 952 #undef PFLAG_RANGE_DEFAULT
 953 #undef PFLAG_RANGE
 954 #undef PFLAG
 955
 956 #define PRINT_NSS_SUPP(f, n)                                            \
 957         do {                                                            \
 958                 int _i;                                                 \
 959                 u16 v = le16_to_cpu(nss->f);                            \
 960                 p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v);  \
 961                 for (_i = 0; _i < 8; _i += 2) {                         \
 962                         switch ((v >> _i) & 0x3) {                      \
 963                         case 0:                                         \
 964                                 PRINT(n "-%d-SUPPORT-0-7", _i / 2);     \
 965                                 break;                                  \
 966                         case 1:                                         \
 967                                 PRINT(n "-%d-SUPPORT-0-9", _i / 2);     \
 968                                 break;                                  \
 969                         case 2:                                         \
 970                                 PRINT(n "-%d-SUPPORT-0-11", _i / 2);    \
 971                                 break;                                  \
 972                         case 3:                                         \
 973                                 PRINT(n "-%d-NOT-SUPPORTED", _i / 2);   \
 974                                 break;                                  \
 975                         }                                               \
 976                 }                                                       \
 977         } while (0)
 978
 979         PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80");
 980         PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80");
 981
 982         if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) {
 983                 PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160");
 984                 PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160");
 985         }
 986
 987         if (cap[0] &
 988             IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
 989                 PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80");
 990                 PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80");
 991         }
 992
 993 #undef PRINT_NSS_SUPP
 994 #undef PRINT
 995
 996         if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT))
 997                 goto out;
 998
 999         p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x",
1000                        hec->ppe_thres[0]);
1001
1002         ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap);
1003         for (i = 1; i < ppe_size; i++) {
1004                 p += scnprintf(p, buf_sz + buf - p, " %#.2x",
1005                                hec->ppe_thres[i]);
1006         }
1007         p += scnprintf(p, buf_sz + buf - p, "\n");
1008
1009 out:
1010         ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1011         kfree(buf);
1012         return ret;
1013 }
1014 STA_OPS(he_capa);
1015
1016 #define DEBUGFS_ADD(name) \
1017         debugfs_create_file(#name, 0400, \
1018                 sta->debugfs_dir, sta, &sta_ ##name## _ops)
1019
1020 #define DEBUGFS_ADD_COUNTER(name, field)                                \
1021         debugfs_create_ulong(#name, 0400, sta->debugfs_dir, &sta->field);
1022
1023 void ieee80211_sta_debugfs_add(struct sta_info *sta)
1024 {
1025         struct ieee80211_local *local = sta->local;
1026         struct ieee80211_sub_if_data *sdata = sta->sdata;
1027         struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
1028         u8 mac[3*ETH_ALEN];
1029
1030         if (!stations_dir)
1031                 return;
1032
1033         snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
1034
1035         /*
1036          * This might fail due to a race condition:
1037          * When mac80211 unlinks a station, the debugfs entries
1038          * remain, but it is already possible to link a new
1039          * station with the same address which triggers adding
1040          * it to debugfs; therefore, if the old station isn't
1041          * destroyed quickly enough the old station's debugfs
1042          * dir might still be around.
1043          */
1044         sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
1045
1046         DEBUGFS_ADD(flags);
1047         DEBUGFS_ADD(aid);
1048         DEBUGFS_ADD(num_ps_buf_frames);
1049         DEBUGFS_ADD(last_seq_ctrl);
1050         DEBUGFS_ADD(agg_status);
1051         DEBUGFS_ADD(ht_capa);
1052         DEBUGFS_ADD(vht_capa);
1053         DEBUGFS_ADD(he_capa);
1054
1055         DEBUGFS_ADD_COUNTER(rx_duplicates, deflink.rx_stats.num_duplicates);
1056         DEBUGFS_ADD_COUNTER(rx_fragments, deflink.rx_stats.fragments);
1057         DEBUGFS_ADD_COUNTER(tx_filtered, deflink.status_stats.filtered);
1058
1059         if (local->ops->wake_tx_queue) {
1060                 DEBUGFS_ADD(aqm);
1061                 DEBUGFS_ADD(airtime);
1062         }
1063
1064         if (wiphy_ext_feature_isset(local->hw.wiphy,
1065                                     NL80211_EXT_FEATURE_AQL))
1066                 DEBUGFS_ADD(aql);
1067
1068         debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir,
1069                            &sta->driver_buffered_tids);
1070
1071         drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
1072 }
1073
1074 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
1075 {
1076         debugfs_remove_recursive(sta->debugfs_dir);
1077         sta->debugfs_dir = NULL;
1078 }