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 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/debugfs.h> 14 #include <linux/ieee80211.h> 15 #include "ieee80211_i.h" 16 #include "debugfs.h" 17 #include "debugfs_sta.h" 18 #include "sta_info.h" 19 #include "driver-ops.h" 20 21 /* sta attributtes */ 22 23 #define STA_READ(name, field, format_string) \ 24 static ssize_t sta_ ##name## _read(struct file *file, \ 25 char __user *userbuf, \ 26 size_t count, loff_t *ppos) \ 27 { \ 28 struct sta_info *sta = file->private_data; \ 29 return mac80211_format_buffer(userbuf, count, ppos, \ 30 format_string, sta->field); \ 31 } 32 #define STA_READ_D(name, field) STA_READ(name, field, "%d\n") 33 34 #define STA_OPS(name) \ 35 static const struct file_operations sta_ ##name## _ops = { \ 36 .read = sta_##name##_read, \ 37 .open = simple_open, \ 38 .llseek = generic_file_llseek, \ 39 } 40 41 #define STA_OPS_RW(name) \ 42 static const struct file_operations sta_ ##name## _ops = { \ 43 .read = sta_##name##_read, \ 44 .write = sta_##name##_write, \ 45 .open = simple_open, \ 46 .llseek = generic_file_llseek, \ 47 } 48 49 #define STA_FILE(name, field, format) \ 50 STA_READ_##format(name, field) \ 51 STA_OPS(name) 52 53 STA_FILE(aid, sta.aid, D); 54 55 static const char * const sta_flag_names[] = { 56 #define FLAG(F) [WLAN_STA_##F] = #F 57 FLAG(AUTH), 58 FLAG(ASSOC), 59 FLAG(PS_STA), 60 FLAG(AUTHORIZED), 61 FLAG(SHORT_PREAMBLE), 62 FLAG(WDS), 63 FLAG(CLEAR_PS_FILT), 64 FLAG(MFP), 65 FLAG(BLOCK_BA), 66 FLAG(PS_DRIVER), 67 FLAG(PSPOLL), 68 FLAG(TDLS_PEER), 69 FLAG(TDLS_PEER_AUTH), 70 FLAG(TDLS_INITIATOR), 71 FLAG(TDLS_CHAN_SWITCH), 72 FLAG(TDLS_OFF_CHANNEL), 73 FLAG(TDLS_WIDER_BW), 74 FLAG(UAPSD), 75 FLAG(SP), 76 FLAG(4ADDR_EVENT), 77 FLAG(INSERTED), 78 FLAG(RATE_CONTROL), 79 FLAG(TOFFSET_KNOWN), 80 FLAG(MPSP_OWNER), 81 FLAG(MPSP_RECIPIENT), 82 FLAG(PS_DELIVER), 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+1); 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 < IEEE80211_NUM_TIDS; i++) { 166 txqi = to_txq_info(sta->sta.txq[i]); 167 p += scnprintf(p, bufsz+buf-p, 168 "%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s)\n", 169 txqi->txq.tid, 170 txqi->txq.ac, 171 txqi->tin.backlog_bytes, 172 txqi->tin.backlog_packets, 173 txqi->tin.flows, 174 txqi->cstats.drop_count, 175 txqi->cstats.ecn_mark, 176 txqi->tin.overlimit, 177 txqi->tin.collisions, 178 txqi->tin.tx_bytes, 179 txqi->tin.tx_packets, 180 txqi->flags, 181 txqi->flags & (1<<IEEE80211_TXQ_STOP) ? "STOP" : "RUN", 182 txqi->flags & (1<<IEEE80211_TXQ_AMPDU) ? " AMPDU" : "", 183 txqi->flags & (1<<IEEE80211_TXQ_NO_AMSDU) ? " NO-AMSDU" : ""); 184 } 185 186 rcu_read_unlock(); 187 spin_unlock_bh(&local->fq.lock); 188 189 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 190 kfree(buf); 191 return rv; 192 } 193 STA_OPS(aqm); 194 195 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, 196 size_t count, loff_t *ppos) 197 { 198 char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf; 199 int i; 200 struct sta_info *sta = file->private_data; 201 struct tid_ampdu_rx *tid_rx; 202 struct tid_ampdu_tx *tid_tx; 203 204 rcu_read_lock(); 205 206 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n", 207 sta->ampdu_mlme.dialog_token_allocator + 1); 208 p += scnprintf(p, sizeof(buf) + buf - p, 209 "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n"); 210 211 for (i = 0; i < IEEE80211_NUM_TIDS; i++) { 212 bool tid_rx_valid; 213 214 tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]); 215 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]); 216 tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid); 217 218 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i); 219 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", 220 tid_rx_valid); 221 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", 222 tid_rx_valid ? 223 sta->ampdu_mlme.tid_rx_token[i] : 0); 224 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", 225 tid_rx ? tid_rx->ssn : 0); 226 227 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx); 228 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", 229 tid_tx ? tid_tx->dialog_token : 0); 230 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d", 231 tid_tx ? skb_queue_len(&tid_tx->pending) : 0); 232 p += scnprintf(p, sizeof(buf) + buf - p, "\n"); 233 } 234 rcu_read_unlock(); 235 236 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 237 } 238 239 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf, 240 size_t count, loff_t *ppos) 241 { 242 char _buf[25] = {}, *buf = _buf; 243 struct sta_info *sta = file->private_data; 244 bool start, tx; 245 unsigned long tid; 246 char *pos; 247 int ret, timeout = 5000; 248 249 if (count > sizeof(_buf)) 250 return -EINVAL; 251 252 if (copy_from_user(buf, userbuf, count)) 253 return -EFAULT; 254 255 buf[sizeof(_buf) - 1] = '\0'; 256 pos = buf; 257 buf = strsep(&pos, " "); 258 if (!buf) 259 return -EINVAL; 260 261 if (!strcmp(buf, "tx")) 262 tx = true; 263 else if (!strcmp(buf, "rx")) 264 tx = false; 265 else 266 return -EINVAL; 267 268 buf = strsep(&pos, " "); 269 if (!buf) 270 return -EINVAL; 271 if (!strcmp(buf, "start")) { 272 start = true; 273 if (!tx) 274 return -EINVAL; 275 } else if (!strcmp(buf, "stop")) { 276 start = false; 277 } else { 278 return -EINVAL; 279 } 280 281 buf = strsep(&pos, " "); 282 if (!buf) 283 return -EINVAL; 284 if (sscanf(buf, "timeout=%d", &timeout) == 1) { 285 buf = strsep(&pos, " "); 286 if (!buf || !tx || !start) 287 return -EINVAL; 288 } 289 290 ret = kstrtoul(buf, 0, &tid); 291 if (ret || tid >= IEEE80211_NUM_TIDS) 292 return -EINVAL; 293 294 if (tx) { 295 if (start) 296 ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 297 timeout); 298 else 299 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid); 300 } else { 301 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, 302 3, true); 303 ret = 0; 304 } 305 306 return ret ?: count; 307 } 308 STA_OPS_RW(agg_status); 309 310 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf, 311 size_t count, loff_t *ppos) 312 { 313 #define PRINT_HT_CAP(_cond, _str) \ 314 do { \ 315 if (_cond) \ 316 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \ 317 } while (0) 318 char buf[512], *p = buf; 319 int i; 320 struct sta_info *sta = file->private_data; 321 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap; 322 323 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n", 324 htc->ht_supported ? "" : "not "); 325 if (htc->ht_supported) { 326 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap); 327 328 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC"); 329 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40"); 330 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); 331 332 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save"); 333 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save"); 334 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); 335 336 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield"); 337 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI"); 338 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI"); 339 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); 340 341 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC"); 342 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream"); 343 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams"); 344 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); 345 346 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); 347 348 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " 349 "3839 bytes"); 350 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " 351 "7935 bytes"); 352 353 /* 354 * For beacons and probe response this would mean the BSS 355 * does or does not allow the usage of DSSS/CCK HT40. 356 * Otherwise it means the STA does or does not use 357 * DSSS/CCK HT40. 358 */ 359 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40"); 360 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); 361 362 /* BIT(13) is reserved */ 363 364 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); 365 366 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); 367 368 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n", 369 htc->ampdu_factor, htc->ampdu_density); 370 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:"); 371 372 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 373 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x", 374 htc->mcs.rx_mask[i]); 375 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 376 377 /* If not set this is meaningless */ 378 if (le16_to_cpu(htc->mcs.rx_highest)) { 379 p += scnprintf(p, sizeof(buf)+buf-p, 380 "MCS rx highest: %d Mbps\n", 381 le16_to_cpu(htc->mcs.rx_highest)); 382 } 383 384 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n", 385 htc->mcs.tx_params); 386 } 387 388 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 389 } 390 STA_OPS(ht_capa); 391 392 static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf, 393 size_t count, loff_t *ppos) 394 { 395 char buf[512], *p = buf; 396 struct sta_info *sta = file->private_data; 397 struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap; 398 399 p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n", 400 vhtc->vht_supported ? "" : "not "); 401 if (vhtc->vht_supported) { 402 p += scnprintf(p, sizeof(buf) + buf - p, "cap: %#.8x\n", 403 vhtc->cap); 404 #define PFLAG(a, b) \ 405 do { \ 406 if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \ 407 p += scnprintf(p, sizeof(buf) + buf - p, \ 408 "\t\t%s\n", b); \ 409 } while (0) 410 411 switch (vhtc->cap & 0x3) { 412 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 413 p += scnprintf(p, sizeof(buf) + buf - p, 414 "\t\tMAX-MPDU-3895\n"); 415 break; 416 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 417 p += scnprintf(p, sizeof(buf) + buf - p, 418 "\t\tMAX-MPDU-7991\n"); 419 break; 420 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: 421 p += scnprintf(p, sizeof(buf) + buf - p, 422 "\t\tMAX-MPDU-11454\n"); 423 break; 424 default: 425 p += scnprintf(p, sizeof(buf) + buf - p, 426 "\t\tMAX-MPDU-UNKNOWN\n"); 427 } 428 switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { 429 case 0: 430 p += scnprintf(p, sizeof(buf) + buf - p, 431 "\t\t80Mhz\n"); 432 break; 433 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ: 434 p += scnprintf(p, sizeof(buf) + buf - p, 435 "\t\t160Mhz\n"); 436 break; 437 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ: 438 p += scnprintf(p, sizeof(buf) + buf - p, 439 "\t\t80+80Mhz\n"); 440 break; 441 default: 442 p += scnprintf(p, sizeof(buf) + buf - p, 443 "\t\tUNKNOWN-MHZ: 0x%x\n", 444 (vhtc->cap >> 2) & 0x3); 445 } 446 PFLAG(RXLDPC, "RXLDPC"); 447 PFLAG(SHORT_GI_80, "SHORT-GI-80"); 448 PFLAG(SHORT_GI_160, "SHORT-GI-160"); 449 PFLAG(TXSTBC, "TXSTBC"); 450 p += scnprintf(p, sizeof(buf) + buf - p, 451 "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7); 452 PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE"); 453 PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE"); 454 p += scnprintf(p, sizeof(buf) + buf - p, 455 "\t\tBEAMFORMEE-STS: 0x%x\n", 456 (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >> 457 IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 458 p += scnprintf(p, sizeof(buf) + buf - p, 459 "\t\tSOUNDING-DIMENSIONS: 0x%x\n", 460 (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK) 461 >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT); 462 PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE"); 463 PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE"); 464 PFLAG(VHT_TXOP_PS, "TXOP-PS"); 465 PFLAG(HTC_VHT, "HTC-VHT"); 466 p += scnprintf(p, sizeof(buf) + buf - p, 467 "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n", 468 (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >> 469 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT); 470 PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB, 471 "LINK-ADAPTATION-VHT-UNSOL-MFB"); 472 p += scnprintf(p, sizeof(buf) + buf - p, 473 "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n", 474 (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26); 475 PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN"); 476 PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN"); 477 478 p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n", 479 le16_to_cpu(vhtc->vht_mcs.rx_mcs_map)); 480 if (vhtc->vht_mcs.rx_highest) 481 p += scnprintf(p, sizeof(buf)+buf-p, 482 "MCS RX highest: %d Mbps\n", 483 le16_to_cpu(vhtc->vht_mcs.rx_highest)); 484 p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n", 485 le16_to_cpu(vhtc->vht_mcs.tx_mcs_map)); 486 if (vhtc->vht_mcs.tx_highest) 487 p += scnprintf(p, sizeof(buf)+buf-p, 488 "MCS TX highest: %d Mbps\n", 489 le16_to_cpu(vhtc->vht_mcs.tx_highest)); 490 } 491 492 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 493 } 494 STA_OPS(vht_capa); 495 496 497 #define DEBUGFS_ADD(name) \ 498 debugfs_create_file(#name, 0400, \ 499 sta->debugfs_dir, sta, &sta_ ##name## _ops); 500 501 #define DEBUGFS_ADD_COUNTER(name, field) \ 502 if (sizeof(sta->field) == sizeof(u32)) \ 503 debugfs_create_u32(#name, 0400, sta->debugfs_dir, \ 504 (u32 *) &sta->field); \ 505 else \ 506 debugfs_create_u64(#name, 0400, sta->debugfs_dir, \ 507 (u64 *) &sta->field); 508 509 void ieee80211_sta_debugfs_add(struct sta_info *sta) 510 { 511 struct ieee80211_local *local = sta->local; 512 struct ieee80211_sub_if_data *sdata = sta->sdata; 513 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations; 514 u8 mac[3*ETH_ALEN]; 515 516 if (!stations_dir) 517 return; 518 519 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); 520 521 /* 522 * This might fail due to a race condition: 523 * When mac80211 unlinks a station, the debugfs entries 524 * remain, but it is already possible to link a new 525 * station with the same address which triggers adding 526 * it to debugfs; therefore, if the old station isn't 527 * destroyed quickly enough the old station's debugfs 528 * dir might still be around. 529 */ 530 sta->debugfs_dir = debugfs_create_dir(mac, stations_dir); 531 if (!sta->debugfs_dir) 532 return; 533 534 DEBUGFS_ADD(flags); 535 DEBUGFS_ADD(aid); 536 DEBUGFS_ADD(num_ps_buf_frames); 537 DEBUGFS_ADD(last_seq_ctrl); 538 DEBUGFS_ADD(agg_status); 539 DEBUGFS_ADD(ht_capa); 540 DEBUGFS_ADD(vht_capa); 541 542 DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates); 543 DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments); 544 DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered); 545 546 if (local->ops->wake_tx_queue) 547 DEBUGFS_ADD(aqm); 548 549 if (sizeof(sta->driver_buffered_tids) == sizeof(u32)) 550 debugfs_create_x32("driver_buffered_tids", 0400, 551 sta->debugfs_dir, 552 (u32 *)&sta->driver_buffered_tids); 553 else 554 debugfs_create_x64("driver_buffered_tids", 0400, 555 sta->debugfs_dir, 556 (u64 *)&sta->driver_buffered_tids); 557 558 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir); 559 } 560 561 void ieee80211_sta_debugfs_remove(struct sta_info *sta) 562 { 563 debugfs_remove_recursive(sta->debugfs_dir); 564 sta->debugfs_dir = NULL; 565 } 566