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 - 2023 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 attributes */ 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 debugfs_short_fops sta_ ##name## _ops = { \ 34 .read = sta_##name##_read, \ 35 .llseek = generic_file_llseek, \ 36 } 37 38 #define STA_OPS_RW(name) \ 39 static const struct debugfs_short_fops sta_ ##name## _ops = { \ 40 .read = sta_##name##_read, \ 41 .write = sta_##name##_write, \ 42 .llseek = generic_file_llseek, \ 43 } 44 45 #define STA_FILE(name, field, format) \ 46 STA_READ_##format(name, field) \ 47 STA_OPS(name) 48 49 STA_FILE(aid, sta.aid, D); 50 51 static const char * const sta_flag_names[] = { 52 #define FLAG(F) [WLAN_STA_##F] = #F 53 FLAG(AUTH), 54 FLAG(ASSOC), 55 FLAG(PS_STA), 56 FLAG(AUTHORIZED), 57 FLAG(SHORT_PREAMBLE), 58 FLAG(WDS), 59 FLAG(CLEAR_PS_FILT), 60 FLAG(MFP), 61 FLAG(BLOCK_BA), 62 FLAG(PS_DRIVER), 63 FLAG(PSPOLL), 64 FLAG(TDLS_PEER), 65 FLAG(TDLS_PEER_AUTH), 66 FLAG(TDLS_INITIATOR), 67 FLAG(TDLS_CHAN_SWITCH), 68 FLAG(TDLS_OFF_CHANNEL), 69 FLAG(TDLS_WIDER_BW), 70 FLAG(UAPSD), 71 FLAG(SP), 72 FLAG(4ADDR_EVENT), 73 FLAG(INSERTED), 74 FLAG(RATE_CONTROL), 75 FLAG(TOFFSET_KNOWN), 76 FLAG(MPSP_OWNER), 77 FLAG(MPSP_RECIPIENT), 78 FLAG(PS_DELIVER), 79 FLAG(USES_ENCRYPTION), 80 FLAG(DECAP_OFFLOAD), 81 #undef FLAG 82 }; 83 84 static ssize_t sta_flags_read(struct file *file, char __user *userbuf, 85 size_t count, loff_t *ppos) 86 { 87 char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf; 88 char *end = buf + sizeof(buf) - 1; 89 struct sta_info *sta = file->private_data; 90 unsigned int flg; 91 92 BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS); 93 94 for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) { 95 if (test_sta_flag(sta, flg)) 96 pos += scnprintf(pos, end - pos, "%s\n", 97 sta_flag_names[flg]); 98 } 99 100 return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf)); 101 } 102 STA_OPS(flags); 103 104 static ssize_t sta_num_ps_buf_frames_read(struct file *file, 105 char __user *userbuf, 106 size_t count, loff_t *ppos) 107 { 108 struct sta_info *sta = file->private_data; 109 char buf[17*IEEE80211_NUM_ACS], *p = buf; 110 int ac; 111 112 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 113 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac, 114 skb_queue_len(&sta->ps_tx_buf[ac]) + 115 skb_queue_len(&sta->tx_filtered[ac])); 116 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 117 } 118 STA_OPS(num_ps_buf_frames); 119 120 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, 121 size_t count, loff_t *ppos) 122 { 123 char buf[15*IEEE80211_NUM_TIDS], *p = buf; 124 int i; 125 struct sta_info *sta = file->private_data; 126 for (i = 0; i < IEEE80211_NUM_TIDS; i++) 127 p += scnprintf(p, sizeof(buf)+buf-p, "%x ", 128 le16_to_cpu(sta->last_seq_ctrl[i])); 129 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 130 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 131 } 132 STA_OPS(last_seq_ctrl); 133 134 #define AQM_TXQ_ENTRY_LEN 130 135 136 static ssize_t sta_aqm_read(struct file *file, char __user *userbuf, 137 size_t count, loff_t *ppos) 138 { 139 struct sta_info *sta = file->private_data; 140 struct ieee80211_local *local = sta->local; 141 size_t bufsz = AQM_TXQ_ENTRY_LEN * (IEEE80211_NUM_TIDS + 2); 142 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf; 143 struct txq_info *txqi; 144 ssize_t rv; 145 int i; 146 147 if (!buf) 148 return -ENOMEM; 149 150 spin_lock_bh(&local->fq.lock); 151 rcu_read_lock(); 152 153 p += scnprintf(p, 154 bufsz + buf - p, 155 "target %uus interval %uus ecn %s\n", 156 codel_time_to_us(sta->cparams.target), 157 codel_time_to_us(sta->cparams.interval), 158 sta->cparams.ecn ? "yes" : "no"); 159 p += scnprintf(p, 160 bufsz + buf - p, 161 "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n"); 162 163 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 164 if (!sta->sta.txq[i]) 165 continue; 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%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 test_bit(IEEE80211_TXQ_STOP, &txqi->flags) ? "STOP" : "RUN", 182 test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags) ? " AMPDU" : "", 183 test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags) ? " NO-AMSDU" : "", 184 test_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ? " DIRTY" : ""); 185 } 186 187 rcu_read_unlock(); 188 spin_unlock_bh(&local->fq.lock); 189 190 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 191 kfree(buf); 192 return rv; 193 } 194 STA_OPS(aqm); 195 196 static ssize_t sta_airtime_read(struct file *file, char __user *userbuf, 197 size_t count, loff_t *ppos) 198 { 199 struct sta_info *sta = file->private_data; 200 struct ieee80211_local *local = sta->sdata->local; 201 size_t bufsz = 400; 202 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf; 203 u64 rx_airtime = 0, tx_airtime = 0; 204 s32 deficit[IEEE80211_NUM_ACS]; 205 ssize_t rv; 206 int ac; 207 208 if (!buf) 209 return -ENOMEM; 210 211 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 212 spin_lock_bh(&local->active_txq_lock[ac]); 213 rx_airtime += sta->airtime[ac].rx_airtime; 214 tx_airtime += sta->airtime[ac].tx_airtime; 215 deficit[ac] = sta->airtime[ac].deficit; 216 spin_unlock_bh(&local->active_txq_lock[ac]); 217 } 218 219 p += scnprintf(p, bufsz + buf - p, 220 "RX: %llu us\nTX: %llu us\nWeight: %u\n" 221 "Deficit: VO: %d us VI: %d us BE: %d us BK: %d us\n", 222 rx_airtime, tx_airtime, sta->airtime_weight, 223 deficit[0], deficit[1], deficit[2], deficit[3]); 224 225 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 226 kfree(buf); 227 return rv; 228 } 229 230 static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf, 231 size_t count, loff_t *ppos) 232 { 233 struct sta_info *sta = file->private_data; 234 struct ieee80211_local *local = sta->sdata->local; 235 int ac; 236 237 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 238 spin_lock_bh(&local->active_txq_lock[ac]); 239 sta->airtime[ac].rx_airtime = 0; 240 sta->airtime[ac].tx_airtime = 0; 241 sta->airtime[ac].deficit = sta->airtime_weight; 242 spin_unlock_bh(&local->active_txq_lock[ac]); 243 } 244 245 return count; 246 } 247 STA_OPS_RW(airtime); 248 249 static ssize_t sta_aql_read(struct file *file, char __user *userbuf, 250 size_t count, loff_t *ppos) 251 { 252 struct sta_info *sta = file->private_data; 253 struct ieee80211_local *local = sta->sdata->local; 254 size_t bufsz = 400; 255 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf; 256 u32 q_depth[IEEE80211_NUM_ACS]; 257 u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS]; 258 ssize_t rv; 259 int ac; 260 261 if (!buf) 262 return -ENOMEM; 263 264 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 265 spin_lock_bh(&local->active_txq_lock[ac]); 266 q_limit_l[ac] = sta->airtime[ac].aql_limit_low; 267 q_limit_h[ac] = sta->airtime[ac].aql_limit_high; 268 spin_unlock_bh(&local->active_txq_lock[ac]); 269 q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending); 270 } 271 272 p += scnprintf(p, bufsz + buf - p, 273 "Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n" 274 "Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n", 275 q_depth[0], q_depth[1], q_depth[2], q_depth[3], 276 q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1], 277 q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]); 278 279 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 280 kfree(buf); 281 return rv; 282 } 283 284 static ssize_t sta_aql_write(struct file *file, const char __user *userbuf, 285 size_t count, loff_t *ppos) 286 { 287 struct sta_info *sta = file->private_data; 288 u32 ac, q_limit_l, q_limit_h; 289 char _buf[100] = {}, *buf = _buf; 290 291 if (count > sizeof(_buf)) 292 return -EINVAL; 293 294 if (copy_from_user(buf, userbuf, count)) 295 return -EFAULT; 296 297 buf[sizeof(_buf) - 1] = '\0'; 298 if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h) 299 != 3) 300 return -EINVAL; 301 302 if (ac >= IEEE80211_NUM_ACS) 303 return -EINVAL; 304 305 sta->airtime[ac].aql_limit_low = q_limit_l; 306 sta->airtime[ac].aql_limit_high = q_limit_h; 307 308 return count; 309 } 310 STA_OPS_RW(aql); 311 312 313 static ssize_t sta_agg_status_do_read(struct wiphy *wiphy, struct file *file, 314 char *buf, size_t bufsz, void *data) 315 { 316 struct sta_info *sta = data; 317 char *p = buf; 318 int i; 319 struct tid_ampdu_rx *tid_rx; 320 struct tid_ampdu_tx *tid_tx; 321 322 p += scnprintf(p, bufsz + buf - p, "next dialog_token: %#02x\n", 323 sta->ampdu_mlme.dialog_token_allocator + 1); 324 p += scnprintf(p, bufsz + buf - p, 325 "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n"); 326 327 for (i = 0; i < IEEE80211_NUM_TIDS; i++) { 328 bool tid_rx_valid; 329 330 tid_rx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_rx[i]); 331 tid_tx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_tx[i]); 332 tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid); 333 334 p += scnprintf(p, bufsz + buf - p, "%02d", i); 335 p += scnprintf(p, bufsz + buf - p, "\t\t%x", 336 tid_rx_valid); 337 p += scnprintf(p, bufsz + buf - p, "\t%#.2x", 338 tid_rx_valid ? 339 sta->ampdu_mlme.tid_rx_token[i] : 0); 340 p += scnprintf(p, bufsz + buf - p, "\t%#.3x", 341 tid_rx ? tid_rx->ssn : 0); 342 343 p += scnprintf(p, bufsz + buf - p, "\t\t%x", !!tid_tx); 344 p += scnprintf(p, bufsz + buf - p, "\t%#.2x", 345 tid_tx ? tid_tx->dialog_token : 0); 346 p += scnprintf(p, bufsz + buf - p, "\t%03d", 347 tid_tx ? skb_queue_len(&tid_tx->pending) : 0); 348 p += scnprintf(p, bufsz + buf - p, "\n"); 349 } 350 351 return p - buf; 352 } 353 354 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, 355 size_t count, loff_t *ppos) 356 { 357 struct sta_info *sta = file->private_data; 358 struct wiphy *wiphy = sta->local->hw.wiphy; 359 size_t bufsz = 71 + IEEE80211_NUM_TIDS * 40; 360 char *buf = kmalloc(bufsz, GFP_KERNEL); 361 ssize_t ret; 362 363 if (!buf) 364 return -ENOMEM; 365 366 ret = wiphy_locked_debugfs_read(wiphy, file, buf, bufsz, 367 userbuf, count, ppos, 368 sta_agg_status_do_read, sta); 369 kfree(buf); 370 371 return ret; 372 } 373 374 static ssize_t sta_agg_status_do_write(struct wiphy *wiphy, struct file *file, 375 char *buf, size_t count, void *data) 376 { 377 struct sta_info *sta = data; 378 bool start, tx; 379 unsigned long tid; 380 char *pos = buf; 381 int ret, timeout = 5000; 382 383 buf = strsep(&pos, " "); 384 if (!buf) 385 return -EINVAL; 386 387 if (!strcmp(buf, "tx")) 388 tx = true; 389 else if (!strcmp(buf, "rx")) 390 tx = false; 391 else 392 return -EINVAL; 393 394 buf = strsep(&pos, " "); 395 if (!buf) 396 return -EINVAL; 397 if (!strcmp(buf, "start")) { 398 start = true; 399 if (!tx) 400 return -EINVAL; 401 } else if (!strcmp(buf, "stop")) { 402 start = false; 403 } else { 404 return -EINVAL; 405 } 406 407 buf = strsep(&pos, " "); 408 if (!buf) 409 return -EINVAL; 410 if (sscanf(buf, "timeout=%d", &timeout) == 1) { 411 buf = strsep(&pos, " "); 412 if (!buf || !tx || !start) 413 return -EINVAL; 414 } 415 416 ret = kstrtoul(buf, 0, &tid); 417 if (ret || tid >= IEEE80211_NUM_TIDS) 418 return -EINVAL; 419 420 if (tx) { 421 if (start) 422 ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 423 timeout); 424 else 425 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid); 426 } else { 427 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, 428 3, true); 429 ret = 0; 430 } 431 432 return ret ?: count; 433 } 434 435 static ssize_t sta_agg_status_write(struct file *file, 436 const char __user *userbuf, 437 size_t count, loff_t *ppos) 438 { 439 struct sta_info *sta = file->private_data; 440 struct wiphy *wiphy = sta->local->hw.wiphy; 441 char _buf[26]; 442 443 return wiphy_locked_debugfs_write(wiphy, file, _buf, sizeof(_buf), 444 userbuf, count, 445 sta_agg_status_do_write, sta); 446 } 447 STA_OPS_RW(agg_status); 448 449 /* link sta attributes */ 450 #define LINK_STA_OPS(name) \ 451 static const struct debugfs_short_fops link_sta_ ##name## _ops = { \ 452 .read = link_sta_##name##_read, \ 453 .llseek = generic_file_llseek, \ 454 } 455 456 static ssize_t link_sta_addr_read(struct file *file, char __user *userbuf, 457 size_t count, loff_t *ppos) 458 { 459 struct link_sta_info *link_sta = file->private_data; 460 u8 mac[3 * ETH_ALEN + 1]; 461 462 snprintf(mac, sizeof(mac), "%pM\n", link_sta->pub->addr); 463 464 return simple_read_from_buffer(userbuf, count, ppos, mac, 3 * ETH_ALEN); 465 } 466 467 LINK_STA_OPS(addr); 468 469 static ssize_t link_sta_ht_capa_read(struct file *file, char __user *userbuf, 470 size_t count, loff_t *ppos) 471 { 472 #define PRINT_HT_CAP(_cond, _str) \ 473 do { \ 474 if (_cond) \ 475 p += scnprintf(p, bufsz + buf - p, "\t" _str "\n"); \ 476 } while (0) 477 char *buf, *p; 478 int i; 479 ssize_t bufsz = 512; 480 struct link_sta_info *link_sta = file->private_data; 481 struct ieee80211_sta_ht_cap *htc = &link_sta->pub->ht_cap; 482 ssize_t ret; 483 484 buf = kzalloc(bufsz, GFP_KERNEL); 485 if (!buf) 486 return -ENOMEM; 487 p = buf; 488 489 p += scnprintf(p, bufsz + buf - p, "ht %ssupported\n", 490 htc->ht_supported ? "" : "not "); 491 if (htc->ht_supported) { 492 p += scnprintf(p, bufsz + buf - p, "cap: %#.4x\n", htc->cap); 493 494 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC"); 495 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40"); 496 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); 497 498 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save"); 499 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save"); 500 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); 501 502 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield"); 503 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI"); 504 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI"); 505 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); 506 507 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC"); 508 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream"); 509 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams"); 510 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); 511 512 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); 513 514 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " 515 "3839 bytes"); 516 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " 517 "7935 bytes"); 518 519 /* 520 * For beacons and probe response this would mean the BSS 521 * does or does not allow the usage of DSSS/CCK HT40. 522 * Otherwise it means the STA does or does not use 523 * DSSS/CCK HT40. 524 */ 525 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40"); 526 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); 527 528 /* BIT(13) is reserved */ 529 530 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); 531 532 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); 533 534 p += scnprintf(p, bufsz + buf - p, "ampdu factor/density: %d/%d\n", 535 htc->ampdu_factor, htc->ampdu_density); 536 p += scnprintf(p, bufsz + buf - p, "MCS mask:"); 537 538 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 539 p += scnprintf(p, bufsz + buf - p, " %.2x", 540 htc->mcs.rx_mask[i]); 541 p += scnprintf(p, bufsz + buf - p, "\n"); 542 543 /* If not set this is meaningless */ 544 if (le16_to_cpu(htc->mcs.rx_highest)) { 545 p += scnprintf(p, bufsz + buf - p, 546 "MCS rx highest: %d Mbps\n", 547 le16_to_cpu(htc->mcs.rx_highest)); 548 } 549 550 p += scnprintf(p, bufsz + buf - p, "MCS tx params: %x\n", 551 htc->mcs.tx_params); 552 } 553 554 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 555 kfree(buf); 556 return ret; 557 } 558 LINK_STA_OPS(ht_capa); 559 560 static ssize_t link_sta_vht_capa_read(struct file *file, char __user *userbuf, 561 size_t count, loff_t *ppos) 562 { 563 char *buf, *p; 564 struct link_sta_info *link_sta = file->private_data; 565 struct ieee80211_sta_vht_cap *vhtc = &link_sta->pub->vht_cap; 566 ssize_t ret; 567 ssize_t bufsz = 512; 568 569 buf = kzalloc(bufsz, GFP_KERNEL); 570 if (!buf) 571 return -ENOMEM; 572 p = buf; 573 574 p += scnprintf(p, bufsz + buf - p, "VHT %ssupported\n", 575 vhtc->vht_supported ? "" : "not "); 576 if (vhtc->vht_supported) { 577 p += scnprintf(p, bufsz + buf - p, "cap: %#.8x\n", 578 vhtc->cap); 579 #define PFLAG(a, b) \ 580 do { \ 581 if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \ 582 p += scnprintf(p, bufsz + buf - p, \ 583 "\t\t%s\n", b); \ 584 } while (0) 585 586 switch (vhtc->cap & 0x3) { 587 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 588 p += scnprintf(p, bufsz + buf - p, 589 "\t\tMAX-MPDU-3895\n"); 590 break; 591 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 592 p += scnprintf(p, bufsz + buf - p, 593 "\t\tMAX-MPDU-7991\n"); 594 break; 595 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: 596 p += scnprintf(p, bufsz + buf - p, 597 "\t\tMAX-MPDU-11454\n"); 598 break; 599 default: 600 p += scnprintf(p, bufsz + buf - p, 601 "\t\tMAX-MPDU-UNKNOWN\n"); 602 } 603 switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { 604 case 0: 605 p += scnprintf(p, bufsz + buf - p, 606 "\t\t80Mhz\n"); 607 break; 608 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ: 609 p += scnprintf(p, bufsz + buf - p, 610 "\t\t160Mhz\n"); 611 break; 612 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ: 613 p += scnprintf(p, bufsz + buf - p, 614 "\t\t80+80Mhz\n"); 615 break; 616 default: 617 p += scnprintf(p, bufsz + buf - p, 618 "\t\tUNKNOWN-MHZ: 0x%x\n", 619 (vhtc->cap >> 2) & 0x3); 620 } 621 PFLAG(RXLDPC, "RXLDPC"); 622 PFLAG(SHORT_GI_80, "SHORT-GI-80"); 623 PFLAG(SHORT_GI_160, "SHORT-GI-160"); 624 PFLAG(TXSTBC, "TXSTBC"); 625 p += scnprintf(p, bufsz + buf - p, 626 "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7); 627 PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE"); 628 PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE"); 629 p += scnprintf(p, bufsz + buf - p, 630 "\t\tBEAMFORMEE-STS: 0x%x\n", 631 (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >> 632 IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 633 p += scnprintf(p, bufsz + buf - p, 634 "\t\tSOUNDING-DIMENSIONS: 0x%x\n", 635 (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK) 636 >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT); 637 PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE"); 638 PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE"); 639 PFLAG(VHT_TXOP_PS, "TXOP-PS"); 640 PFLAG(HTC_VHT, "HTC-VHT"); 641 p += scnprintf(p, bufsz + buf - p, 642 "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n", 643 (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >> 644 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT); 645 PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB, 646 "LINK-ADAPTATION-VHT-UNSOL-MFB"); 647 p += scnprintf(p, bufsz + buf - p, 648 "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n", 649 (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26); 650 PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN"); 651 PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN"); 652 653 p += scnprintf(p, bufsz + buf - p, "RX MCS: %.4x\n", 654 le16_to_cpu(vhtc->vht_mcs.rx_mcs_map)); 655 if (vhtc->vht_mcs.rx_highest) 656 p += scnprintf(p, bufsz + buf - p, 657 "MCS RX highest: %d Mbps\n", 658 le16_to_cpu(vhtc->vht_mcs.rx_highest)); 659 p += scnprintf(p, bufsz + buf - p, "TX MCS: %.4x\n", 660 le16_to_cpu(vhtc->vht_mcs.tx_mcs_map)); 661 if (vhtc->vht_mcs.tx_highest) 662 p += scnprintf(p, bufsz + buf - p, 663 "MCS TX highest: %d Mbps\n", 664 le16_to_cpu(vhtc->vht_mcs.tx_highest)); 665 #undef PFLAG 666 } 667 668 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 669 kfree(buf); 670 return ret; 671 } 672 LINK_STA_OPS(vht_capa); 673 674 static ssize_t link_sta_he_capa_read(struct file *file, char __user *userbuf, 675 size_t count, loff_t *ppos) 676 { 677 char *buf, *p; 678 size_t buf_sz = PAGE_SIZE; 679 struct link_sta_info *link_sta = file->private_data; 680 struct ieee80211_sta_he_cap *hec = &link_sta->pub->he_cap; 681 struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp; 682 u8 ppe_size; 683 u8 *cap; 684 int i; 685 ssize_t ret; 686 687 buf = kmalloc(buf_sz, GFP_KERNEL); 688 if (!buf) 689 return -ENOMEM; 690 p = buf; 691 692 p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n", 693 hec->has_he ? "" : "not "); 694 if (!hec->has_he) 695 goto out; 696 697 cap = hec->he_cap_elem.mac_cap_info; 698 p += scnprintf(p, buf_sz + buf - p, 699 "MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n", 700 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]); 701 702 #define PRINT(fmt, ...) \ 703 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \ 704 ##__VA_ARGS__) 705 706 #define PFLAG(t, n, a, b) \ 707 do { \ 708 if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a) \ 709 PRINT("%s", b); \ 710 } while (0) 711 712 #define PFLAG_RANGE(t, i, n, s, m, off, fmt) \ 713 do { \ 714 u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK; \ 715 u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off; \ 716 PRINT(fmt, (s << idx) + (m * idx)); \ 717 } while (0) 718 719 #define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b) \ 720 do { \ 721 if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) { \ 722 PRINT("%s", b); \ 723 break; \ 724 } \ 725 PFLAG_RANGE(t, i, n, s, m, off, fmt); \ 726 } while (0) 727 728 PFLAG(MAC, 0, HTC_HE, "HTC-HE"); 729 PFLAG(MAC, 0, TWT_REQ, "TWT-REQ"); 730 PFLAG(MAC, 0, TWT_RES, "TWT-RES"); 731 PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0, 732 "DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP"); 733 PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0, 734 "MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED"); 735 736 PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1, 737 "MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED"); 738 PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0, 739 "TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN"); 740 PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1, 741 "MULTI-TID-AGG-RX-QOS-%d"); 742 743 if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) { 744 switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) { 745 case 0: 746 PRINT("LINK-ADAPTATION-NO-FEEDBACK"); 747 break; 748 case 1: 749 PRINT("LINK-ADAPTATION-RESERVED"); 750 break; 751 case 2: 752 PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK"); 753 break; 754 case 3: 755 PRINT("LINK-ADAPTATION-BOTH"); 756 break; 757 } 758 } 759 760 PFLAG(MAC, 2, ALL_ACK, "ALL-ACK"); 761 PFLAG(MAC, 2, TRS, "TRS"); 762 PFLAG(MAC, 2, BSR, "BSR"); 763 PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT"); 764 PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP"); 765 PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING"); 766 PFLAG(MAC, 2, ACK_EN, "ACK-EN"); 767 768 PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL"); 769 PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA"); 770 771 switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) { 772 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_0: 773 PRINT("MAX-AMPDU-LEN-EXP-USE-EXT-0"); 774 break; 775 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_1: 776 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-1"); 777 break; 778 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_2: 779 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-2"); 780 break; 781 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3: 782 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-3"); 783 break; 784 } 785 786 PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG"); 787 PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED"); 788 PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS"); 789 790 PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG"); 791 PFLAG(MAC, 4, QTP, "QTP"); 792 PFLAG(MAC, 4, BQR, "BQR"); 793 PFLAG(MAC, 4, PSR_RESP, "PSR-RESP"); 794 PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP"); 795 PFLAG(MAC, 4, OPS, "OPS"); 796 PFLAG(MAC, 4, AMSDU_IN_AMPDU, "AMSDU-IN-AMPDU"); 797 798 PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7); 799 800 PFLAG(MAC, 5, SUBCHAN_SELECTIVE_TRANSMISSION, 801 "SUBCHAN-SELECTIVE-TRANSMISSION"); 802 PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU"); 803 PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX"); 804 PFLAG(MAC, 5, HE_DYNAMIC_SM_PS, "HE-DYNAMIC-SM-PS"); 805 PFLAG(MAC, 5, PUNCTURED_SOUNDING, "PUNCTURED-SOUNDING"); 806 PFLAG(MAC, 5, HT_VHT_TRIG_FRAME_RX, "HT-VHT-TRIG-FRAME-RX"); 807 808 cap = hec->he_cap_elem.phy_cap_info; 809 p += scnprintf(p, buf_sz + buf - p, 810 "PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n", 811 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6], 812 cap[7], cap[8], cap[9], cap[10]); 813 814 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G, 815 "CHANNEL-WIDTH-SET-40MHZ-IN-2G"); 816 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G, 817 "CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G"); 818 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G, 819 "CHANNEL-WIDTH-SET-160MHZ-IN-5G"); 820 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G, 821 "CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G"); 822 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G, 823 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G"); 824 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G, 825 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G"); 826 827 switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) { 828 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ: 829 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ"); 830 break; 831 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ: 832 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ"); 833 break; 834 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ: 835 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ"); 836 break; 837 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ: 838 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ"); 839 break; 840 } 841 842 PFLAG(PHY, 1, DEVICE_CLASS_A, 843 "IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A"); 844 PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD, 845 "LDPC-CODING-IN-PAYLOAD"); 846 PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US, 847 "HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US"); 848 PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3); 849 850 PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US"); 851 PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ"); 852 PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ"); 853 PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX"); 854 PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX"); 855 PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO"); 856 PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO"); 857 858 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) { 859 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM: 860 PRINT("DCM-MAX-CONST-TX-NO-DCM"); 861 break; 862 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK: 863 PRINT("DCM-MAX-CONST-TX-BPSK"); 864 break; 865 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK: 866 PRINT("DCM-MAX-CONST-TX-QPSK"); 867 break; 868 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM: 869 PRINT("DCM-MAX-CONST-TX-16-QAM"); 870 break; 871 } 872 873 PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1"); 874 PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2"); 875 876 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) { 877 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM: 878 PRINT("DCM-MAX-CONST-RX-NO-DCM"); 879 break; 880 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK: 881 PRINT("DCM-MAX-CONST-RX-BPSK"); 882 break; 883 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK: 884 PRINT("DCM-MAX-CONST-RX-QPSK"); 885 break; 886 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM: 887 PRINT("DCM-MAX-CONST-RX-16-QAM"); 888 break; 889 } 890 891 PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1"); 892 PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2"); 893 PFLAG(PHY, 3, RX_PARTIAL_BW_SU_IN_20MHZ_MU, 894 "RX-PARTIAL-BW-SU-IN-20MHZ-MU"); 895 PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER"); 896 897 PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE"); 898 PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER"); 899 900 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4, 901 "BEAMFORMEE-MAX-STS-UNDER-%d"); 902 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4, 903 "BEAMFORMEE-MAX-STS-ABOVE-%d"); 904 905 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1, 906 "NUM-SND-DIM-UNDER-80MHZ-%d"); 907 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1, 908 "NUM-SND-DIM-ABOVE-80MHZ-%d"); 909 PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK"); 910 PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK"); 911 912 PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU"); 913 PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU"); 914 PFLAG(PHY, 6, TRIG_SU_BEAMFORMING_FB, "TRIG-SU-BEAMFORMING-FB"); 915 PFLAG(PHY, 6, TRIG_MU_BEAMFORMING_PARTIAL_BW_FB, 916 "MU-BEAMFORMING-PARTIAL-BW-FB"); 917 PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB"); 918 PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE"); 919 PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO, 920 "PARTIAL-BANDWIDTH-DL-MUMIMO"); 921 PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT"); 922 923 PFLAG(PHY, 7, PSR_BASED_SR, "PSR-BASED-SR"); 924 PFLAG(PHY, 7, POWER_BOOST_FACTOR_SUPP, "POWER-BOOST-FACTOR-SUPP"); 925 PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI, 926 "HE-SU-MU-PPDU-4XLTF-AND-08-US-GI"); 927 PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d"); 928 PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ"); 929 PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ"); 930 931 PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI, 932 "HE-ER-SU-PPDU-4XLTF-AND-08-US-GI"); 933 PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G, 934 "20MHZ-IN-40MHZ-HE-PPDU-IN-2G"); 935 PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU"); 936 PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU"); 937 PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI, 938 "HE-ER-SU-1XLTF-AND-08-US-GI"); 939 PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF, 940 "MIDAMBLE-RX-TX-2X-AND-1XLTF"); 941 942 switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK) { 943 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242: 944 PRINT("DCM-MAX-RU-242"); 945 break; 946 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484: 947 PRINT("DCM-MAX-RU-484"); 948 break; 949 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996: 950 PRINT("DCM-MAX-RU-996"); 951 break; 952 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996: 953 PRINT("DCM-MAX-RU-2x996"); 954 break; 955 } 956 957 PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM, 958 "LONGER-THAN-16-SIGB-OFDM-SYM"); 959 PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK, 960 "NON-TRIGGERED-CQI-FEEDBACK"); 961 PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU, 962 "TX-1024-QAM-LESS-THAN-242-TONE-RU"); 963 PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU, 964 "RX-1024-QAM-LESS-THAN-242-TONE-RU"); 965 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB, 966 "RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB"); 967 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB, 968 "RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB"); 969 970 switch (u8_get_bits(cap[9], 971 IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK)) { 972 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US: 973 PRINT("NOMINAL-PACKET-PADDING-0US"); 974 break; 975 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US: 976 PRINT("NOMINAL-PACKET-PADDING-8US"); 977 break; 978 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US: 979 PRINT("NOMINAL-PACKET-PADDING-16US"); 980 break; 981 } 982 983 #undef PFLAG_RANGE_DEFAULT 984 #undef PFLAG_RANGE 985 #undef PFLAG 986 987 #define PRINT_NSS_SUPP(f, n) \ 988 do { \ 989 int _i; \ 990 u16 v = le16_to_cpu(nss->f); \ 991 p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v); \ 992 for (_i = 0; _i < 8; _i += 2) { \ 993 switch ((v >> _i) & 0x3) { \ 994 case 0: \ 995 PRINT(n "-%d-SUPPORT-0-7", _i / 2); \ 996 break; \ 997 case 1: \ 998 PRINT(n "-%d-SUPPORT-0-9", _i / 2); \ 999 break; \ 1000 case 2: \ 1001 PRINT(n "-%d-SUPPORT-0-11", _i / 2); \ 1002 break; \ 1003 case 3: \ 1004 PRINT(n "-%d-NOT-SUPPORTED", _i / 2); \ 1005 break; \ 1006 } \ 1007 } \ 1008 } while (0) 1009 1010 PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80"); 1011 PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80"); 1012 1013 if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) { 1014 PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160"); 1015 PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160"); 1016 } 1017 1018 if (cap[0] & 1019 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) { 1020 PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80"); 1021 PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80"); 1022 } 1023 1024 #undef PRINT_NSS_SUPP 1025 #undef PRINT 1026 1027 if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)) 1028 goto out; 1029 1030 p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x", 1031 hec->ppe_thres[0]); 1032 1033 ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap); 1034 for (i = 1; i < ppe_size; i++) { 1035 p += scnprintf(p, buf_sz + buf - p, " %#.2x", 1036 hec->ppe_thres[i]); 1037 } 1038 p += scnprintf(p, buf_sz + buf - p, "\n"); 1039 1040 out: 1041 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 1042 kfree(buf); 1043 return ret; 1044 } 1045 LINK_STA_OPS(he_capa); 1046 1047 static ssize_t link_sta_eht_capa_read(struct file *file, char __user *userbuf, 1048 size_t count, loff_t *ppos) 1049 { 1050 char *buf, *p; 1051 size_t buf_sz = PAGE_SIZE; 1052 struct link_sta_info *link_sta = file->private_data; 1053 struct ieee80211_sta_eht_cap *bec = &link_sta->pub->eht_cap; 1054 struct ieee80211_eht_cap_elem_fixed *fixed = &bec->eht_cap_elem; 1055 struct ieee80211_eht_mcs_nss_supp *nss = &bec->eht_mcs_nss_supp; 1056 u8 *cap; 1057 int i; 1058 ssize_t ret; 1059 static const char *mcs_desc[] = { "0-7", "8-9", "10-11", "12-13"}; 1060 1061 buf = kmalloc(buf_sz, GFP_KERNEL); 1062 if (!buf) 1063 return -ENOMEM; 1064 p = buf; 1065 1066 p += scnprintf(p, buf_sz + buf - p, "EHT %ssupported\n", 1067 bec->has_eht ? "" : "not "); 1068 if (!bec->has_eht) 1069 goto out; 1070 1071 p += scnprintf(p, buf_sz + buf - p, 1072 "MAC-CAP: %#.2x %#.2x\n", 1073 fixed->mac_cap_info[0], fixed->mac_cap_info[1]); 1074 p += scnprintf(p, buf_sz + buf - p, 1075 "PHY-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n", 1076 fixed->phy_cap_info[0], fixed->phy_cap_info[1], 1077 fixed->phy_cap_info[2], fixed->phy_cap_info[3], 1078 fixed->phy_cap_info[4], fixed->phy_cap_info[5], 1079 fixed->phy_cap_info[6], fixed->phy_cap_info[7], 1080 fixed->phy_cap_info[8]); 1081 1082 #define PRINT(fmt, ...) \ 1083 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \ 1084 ##__VA_ARGS__) 1085 1086 #define PFLAG(t, n, a, b) \ 1087 do { \ 1088 if (cap[n] & IEEE80211_EHT_##t##_CAP##n##_##a) \ 1089 PRINT("%s", b); \ 1090 } while (0) 1091 1092 cap = fixed->mac_cap_info; 1093 PFLAG(MAC, 0, EPCS_PRIO_ACCESS, "EPCS-PRIO-ACCESS"); 1094 PFLAG(MAC, 0, OM_CONTROL, "OM-CONTROL"); 1095 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE1, "TRIG-TXOP-SHARING-MODE1"); 1096 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE2, "TRIG-TXOP-SHARING-MODE2"); 1097 PFLAG(MAC, 0, RESTRICTED_TWT, "RESTRICTED-TWT"); 1098 PFLAG(MAC, 0, SCS_TRAFFIC_DESC, "SCS-TRAFFIC-DESC"); 1099 switch ((cap[0] & 0xc0) >> 6) { 1100 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_3895: 1101 PRINT("MAX-MPDU-LEN: 3985"); 1102 break; 1103 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991: 1104 PRINT("MAX-MPDU-LEN: 7991"); 1105 break; 1106 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454: 1107 PRINT("MAX-MPDU-LEN: 11454"); 1108 break; 1109 } 1110 1111 cap = fixed->phy_cap_info; 1112 PFLAG(PHY, 0, 320MHZ_IN_6GHZ, "320MHZ-IN-6GHZ"); 1113 PFLAG(PHY, 0, 242_TONE_RU_GT20MHZ, "242-TONE-RU-GT20MHZ"); 1114 PFLAG(PHY, 0, NDP_4_EHT_LFT_32_GI, "NDP-4-EHT-LFT-32-GI"); 1115 PFLAG(PHY, 0, PARTIAL_BW_UL_MU_MIMO, "PARTIAL-BW-UL-MU-MIMO"); 1116 PFLAG(PHY, 0, SU_BEAMFORMER, "SU-BEAMFORMER"); 1117 PFLAG(PHY, 0, SU_BEAMFORMEE, "SU-BEAMFORMEE"); 1118 i = cap[0] >> 7; 1119 i |= (cap[1] & 0x3) << 1; 1120 PRINT("BEAMFORMEE-80-NSS: %i", i); 1121 PRINT("BEAMFORMEE-160-NSS: %i", (cap[1] >> 2) & 0x7); 1122 PRINT("BEAMFORMEE-320-NSS: %i", (cap[1] >> 5) & 0x7); 1123 PRINT("SOUNDING-DIM-80-NSS: %i", (cap[2] & 0x7)); 1124 PRINT("SOUNDING-DIM-160-NSS: %i", (cap[2] >> 3) & 0x7); 1125 i = cap[2] >> 6; 1126 i |= (cap[3] & 0x1) << 3; 1127 PRINT("SOUNDING-DIM-320-NSS: %i", i); 1128 1129 PFLAG(PHY, 3, NG_16_SU_FEEDBACK, "NG-16-SU-FEEDBACK"); 1130 PFLAG(PHY, 3, NG_16_MU_FEEDBACK, "NG-16-MU-FEEDBACK"); 1131 PFLAG(PHY, 3, CODEBOOK_4_2_SU_FDBK, "CODEBOOK-4-2-SU-FDBK"); 1132 PFLAG(PHY, 3, CODEBOOK_7_5_MU_FDBK, "CODEBOOK-7-5-MU-FDBK"); 1133 PFLAG(PHY, 3, TRIG_SU_BF_FDBK, "TRIG-SU-BF-FDBK"); 1134 PFLAG(PHY, 3, TRIG_MU_BF_PART_BW_FDBK, "TRIG-MU-BF-PART-BW-FDBK"); 1135 PFLAG(PHY, 3, TRIG_CQI_FDBK, "TRIG-CQI-FDBK"); 1136 1137 PFLAG(PHY, 4, PART_BW_DL_MU_MIMO, "PART-BW-DL-MU-MIMO"); 1138 PFLAG(PHY, 4, PSR_SR_SUPP, "PSR-SR-SUPP"); 1139 PFLAG(PHY, 4, POWER_BOOST_FACT_SUPP, "POWER-BOOST-FACT-SUPP"); 1140 PFLAG(PHY, 4, EHT_MU_PPDU_4_EHT_LTF_08_GI, "EHT-MU-PPDU-4-EHT-LTF-08-GI"); 1141 PRINT("MAX_NC: %i", cap[4] >> 4); 1142 1143 PFLAG(PHY, 5, NON_TRIG_CQI_FEEDBACK, "NON-TRIG-CQI-FEEDBACK"); 1144 PFLAG(PHY, 5, TX_LESS_242_TONE_RU_SUPP, "TX-LESS-242-TONE-RU-SUPP"); 1145 PFLAG(PHY, 5, RX_LESS_242_TONE_RU_SUPP, "RX-LESS-242-TONE-RU-SUPP"); 1146 PFLAG(PHY, 5, PPE_THRESHOLD_PRESENT, "PPE_THRESHOLD_PRESENT"); 1147 switch (cap[5] >> 4 & 0x3) { 1148 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_0US: 1149 PRINT("NOMINAL_PKT_PAD: 0us"); 1150 break; 1151 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_8US: 1152 PRINT("NOMINAL_PKT_PAD: 8us"); 1153 break; 1154 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_16US: 1155 PRINT("NOMINAL_PKT_PAD: 16us"); 1156 break; 1157 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_20US: 1158 PRINT("NOMINAL_PKT_PAD: 20us"); 1159 break; 1160 } 1161 i = cap[5] >> 6; 1162 i |= cap[6] & 0x7; 1163 PRINT("MAX-NUM-SUPP-EHT-LTF: %i", i); 1164 PFLAG(PHY, 5, SUPP_EXTRA_EHT_LTF, "SUPP-EXTRA-EHT-LTF"); 1165 1166 i = (cap[6] >> 3) & 0xf; 1167 PRINT("MCS15-SUPP-MASK: %i", i); 1168 PFLAG(PHY, 6, EHT_DUP_6GHZ_SUPP, "EHT-DUP-6GHZ-SUPP"); 1169 1170 PFLAG(PHY, 7, 20MHZ_STA_RX_NDP_WIDER_BW, "20MHZ-STA-RX-NDP-WIDER-BW"); 1171 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_80MHZ, "NON-OFDMA-UL-MU-MIMO-80MHZ"); 1172 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_160MHZ, "NON-OFDMA-UL-MU-MIMO-160MHZ"); 1173 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_320MHZ, "NON-OFDMA-UL-MU-MIMO-320MHZ"); 1174 PFLAG(PHY, 7, MU_BEAMFORMER_80MHZ, "MU-BEAMFORMER-80MHZ"); 1175 PFLAG(PHY, 7, MU_BEAMFORMER_160MHZ, "MU-BEAMFORMER-160MHZ"); 1176 PFLAG(PHY, 7, MU_BEAMFORMER_320MHZ, "MU-BEAMFORMER-320MHZ"); 1177 PFLAG(PHY, 7, TB_SOUNDING_FDBK_RATE_LIMIT, "TB-SOUNDING-FDBK-RATE-LIMIT"); 1178 1179 PFLAG(PHY, 8, RX_1024QAM_WIDER_BW_DL_OFDMA, "RX-1024QAM-WIDER-BW-DL-OFDMA"); 1180 PFLAG(PHY, 8, RX_4096QAM_WIDER_BW_DL_OFDMA, "RX-4096QAM-WIDER-BW-DL-OFDMA"); 1181 1182 #undef PFLAG 1183 1184 PRINT(""); /* newline */ 1185 if (!(link_sta->pub->he_cap.he_cap_elem.phy_cap_info[0] & 1186 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) { 1187 u8 *mcs_vals = (u8 *)(&nss->only_20mhz); 1188 1189 for (i = 0; i < 4; i++) 1190 PRINT("EHT bw=20 MHz, max NSS for MCS %s: Rx=%u, Tx=%u", 1191 mcs_desc[i], 1192 mcs_vals[i] & 0xf, mcs_vals[i] >> 4); 1193 } else { 1194 u8 *mcs_vals = (u8 *)(&nss->bw._80); 1195 1196 for (i = 0; i < 3; i++) 1197 PRINT("EHT bw <= 80 MHz, max NSS for MCS %s: Rx=%u, Tx=%u", 1198 mcs_desc[i + 1], 1199 mcs_vals[i] & 0xf, mcs_vals[i] >> 4); 1200 1201 mcs_vals = (u8 *)(&nss->bw._160); 1202 for (i = 0; i < 3; i++) 1203 PRINT("EHT bw <= 160 MHz, max NSS for MCS %s: Rx=%u, Tx=%u", 1204 mcs_desc[i + 1], 1205 mcs_vals[i] & 0xf, mcs_vals[i] >> 4); 1206 1207 mcs_vals = (u8 *)(&nss->bw._320); 1208 for (i = 0; i < 3; i++) 1209 PRINT("EHT bw <= 320 MHz, max NSS for MCS %s: Rx=%u, Tx=%u", 1210 mcs_desc[i + 1], 1211 mcs_vals[i] & 0xf, mcs_vals[i] >> 4); 1212 } 1213 1214 if (cap[5] & IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) { 1215 u8 ppe_size = ieee80211_eht_ppe_size(bec->eht_ppe_thres[0], cap); 1216 1217 p += scnprintf(p, buf_sz + buf - p, "EHT PPE Thresholds: "); 1218 for (i = 0; i < ppe_size; i++) 1219 p += scnprintf(p, buf_sz + buf - p, "0x%02x ", 1220 bec->eht_ppe_thres[i]); 1221 PRINT(""); /* newline */ 1222 } 1223 1224 out: 1225 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 1226 kfree(buf); 1227 return ret; 1228 } 1229 LINK_STA_OPS(eht_capa); 1230 1231 #define DEBUGFS_ADD(name) \ 1232 debugfs_create_file(#name, 0400, \ 1233 sta->debugfs_dir, sta, &sta_ ##name## _ops) 1234 1235 #define DEBUGFS_ADD_COUNTER(name, field) \ 1236 debugfs_create_ulong(#name, 0400, sta->debugfs_dir, &sta->field); 1237 1238 void ieee80211_sta_debugfs_add(struct sta_info *sta) 1239 { 1240 struct ieee80211_local *local = sta->local; 1241 struct ieee80211_sub_if_data *sdata = sta->sdata; 1242 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations; 1243 u8 mac[3*ETH_ALEN]; 1244 1245 if (!stations_dir) 1246 return; 1247 1248 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); 1249 1250 /* 1251 * This might fail due to a race condition: 1252 * When mac80211 unlinks a station, the debugfs entries 1253 * remain, but it is already possible to link a new 1254 * station with the same address which triggers adding 1255 * it to debugfs; therefore, if the old station isn't 1256 * destroyed quickly enough the old station's debugfs 1257 * dir might still be around. 1258 */ 1259 sta->debugfs_dir = debugfs_create_dir(mac, stations_dir); 1260 1261 DEBUGFS_ADD(flags); 1262 DEBUGFS_ADD(aid); 1263 DEBUGFS_ADD(num_ps_buf_frames); 1264 DEBUGFS_ADD(last_seq_ctrl); 1265 DEBUGFS_ADD(agg_status); 1266 /* FIXME: Kept here as the statistics are only done on the deflink */ 1267 DEBUGFS_ADD_COUNTER(tx_filtered, deflink.status_stats.filtered); 1268 1269 DEBUGFS_ADD(aqm); 1270 DEBUGFS_ADD(airtime); 1271 1272 if (wiphy_ext_feature_isset(local->hw.wiphy, 1273 NL80211_EXT_FEATURE_AQL)) 1274 DEBUGFS_ADD(aql); 1275 1276 debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir, 1277 &sta->driver_buffered_tids); 1278 1279 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir); 1280 } 1281 1282 void ieee80211_sta_debugfs_remove(struct sta_info *sta) 1283 { 1284 debugfs_remove_recursive(sta->debugfs_dir); 1285 sta->debugfs_dir = NULL; 1286 } 1287 1288 #undef DEBUGFS_ADD 1289 #undef DEBUGFS_ADD_COUNTER 1290 1291 #define DEBUGFS_ADD(name) \ 1292 debugfs_create_file(#name, 0400, \ 1293 link_sta->debugfs_dir, link_sta, &link_sta_ ##name## _ops) 1294 #define DEBUGFS_ADD_COUNTER(name, field) \ 1295 debugfs_create_ulong(#name, 0400, link_sta->debugfs_dir, &link_sta->field) 1296 1297 void ieee80211_link_sta_debugfs_add(struct link_sta_info *link_sta) 1298 { 1299 if (WARN_ON(!link_sta->sta->debugfs_dir)) 1300 return; 1301 1302 /* For non-MLO, leave the files in the main directory. */ 1303 if (link_sta->sta->sta.valid_links) { 1304 char link_dir_name[10]; 1305 1306 snprintf(link_dir_name, sizeof(link_dir_name), 1307 "link-%d", link_sta->link_id); 1308 1309 link_sta->debugfs_dir = 1310 debugfs_create_dir(link_dir_name, 1311 link_sta->sta->debugfs_dir); 1312 1313 DEBUGFS_ADD(addr); 1314 } else { 1315 if (WARN_ON(link_sta != &link_sta->sta->deflink)) 1316 return; 1317 1318 link_sta->debugfs_dir = link_sta->sta->debugfs_dir; 1319 } 1320 1321 DEBUGFS_ADD(ht_capa); 1322 DEBUGFS_ADD(vht_capa); 1323 DEBUGFS_ADD(he_capa); 1324 DEBUGFS_ADD(eht_capa); 1325 1326 DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates); 1327 DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments); 1328 } 1329 1330 void ieee80211_link_sta_debugfs_remove(struct link_sta_info *link_sta) 1331 { 1332 if (!link_sta->debugfs_dir || !link_sta->sta->debugfs_dir) { 1333 link_sta->debugfs_dir = NULL; 1334 return; 1335 } 1336 1337 if (link_sta->debugfs_dir == link_sta->sta->debugfs_dir) { 1338 WARN_ON(link_sta != &link_sta->sta->deflink); 1339 link_sta->sta->debugfs_dir = NULL; 1340 return; 1341 } 1342 1343 debugfs_remove_recursive(link_sta->debugfs_dir); 1344 link_sta->debugfs_dir = NULL; 1345 } 1346 1347 void ieee80211_link_sta_debugfs_drv_add(struct link_sta_info *link_sta) 1348 { 1349 if (WARN_ON(!link_sta->debugfs_dir)) 1350 return; 1351 1352 drv_link_sta_add_debugfs(link_sta->sta->local, link_sta->sta->sdata, 1353 link_sta->pub, link_sta->debugfs_dir); 1354 } 1355 1356 void ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info *link_sta) 1357 { 1358 if (!link_sta->debugfs_dir) 1359 return; 1360 1361 if (WARN_ON(link_sta->debugfs_dir == link_sta->sta->debugfs_dir)) 1362 return; 1363 1364 /* Recreate the directory excluding the driver data */ 1365 debugfs_remove_recursive(link_sta->debugfs_dir); 1366 link_sta->debugfs_dir = NULL; 1367 1368 ieee80211_link_sta_debugfs_add(link_sta); 1369 } 1370