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 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%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 test_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ? " DIRTY" : ""); 187 } 188 189 rcu_read_unlock(); 190 spin_unlock_bh(&local->fq.lock); 191 192 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 193 kfree(buf); 194 return rv; 195 } 196 STA_OPS(aqm); 197 198 static ssize_t sta_airtime_read(struct file *file, char __user *userbuf, 199 size_t count, loff_t *ppos) 200 { 201 struct sta_info *sta = file->private_data; 202 struct ieee80211_local *local = sta->sdata->local; 203 size_t bufsz = 400; 204 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf; 205 u64 rx_airtime = 0, tx_airtime = 0; 206 s32 deficit[IEEE80211_NUM_ACS]; 207 ssize_t rv; 208 int ac; 209 210 if (!buf) 211 return -ENOMEM; 212 213 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 214 spin_lock_bh(&local->active_txq_lock[ac]); 215 rx_airtime += sta->airtime[ac].rx_airtime; 216 tx_airtime += sta->airtime[ac].tx_airtime; 217 deficit[ac] = sta->airtime[ac].deficit; 218 spin_unlock_bh(&local->active_txq_lock[ac]); 219 } 220 221 p += scnprintf(p, bufsz + buf - p, 222 "RX: %llu us\nTX: %llu us\nWeight: %u\n" 223 "Deficit: VO: %d us VI: %d us BE: %d us BK: %d us\n", 224 rx_airtime, tx_airtime, sta->airtime_weight, 225 deficit[0], deficit[1], deficit[2], deficit[3]); 226 227 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 228 kfree(buf); 229 return rv; 230 } 231 232 static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf, 233 size_t count, loff_t *ppos) 234 { 235 struct sta_info *sta = file->private_data; 236 struct ieee80211_local *local = sta->sdata->local; 237 int ac; 238 239 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 240 spin_lock_bh(&local->active_txq_lock[ac]); 241 sta->airtime[ac].rx_airtime = 0; 242 sta->airtime[ac].tx_airtime = 0; 243 sta->airtime[ac].deficit = sta->airtime_weight; 244 spin_unlock_bh(&local->active_txq_lock[ac]); 245 } 246 247 return count; 248 } 249 STA_OPS_RW(airtime); 250 251 static ssize_t sta_aql_read(struct file *file, char __user *userbuf, 252 size_t count, loff_t *ppos) 253 { 254 struct sta_info *sta = file->private_data; 255 struct ieee80211_local *local = sta->sdata->local; 256 size_t bufsz = 400; 257 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf; 258 u32 q_depth[IEEE80211_NUM_ACS]; 259 u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS]; 260 ssize_t rv; 261 int ac; 262 263 if (!buf) 264 return -ENOMEM; 265 266 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 267 spin_lock_bh(&local->active_txq_lock[ac]); 268 q_limit_l[ac] = sta->airtime[ac].aql_limit_low; 269 q_limit_h[ac] = sta->airtime[ac].aql_limit_high; 270 spin_unlock_bh(&local->active_txq_lock[ac]); 271 q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending); 272 } 273 274 p += scnprintf(p, bufsz + buf - p, 275 "Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n" 276 "Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n", 277 q_depth[0], q_depth[1], q_depth[2], q_depth[3], 278 q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1], 279 q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]); 280 281 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 282 kfree(buf); 283 return rv; 284 } 285 286 static ssize_t sta_aql_write(struct file *file, const char __user *userbuf, 287 size_t count, loff_t *ppos) 288 { 289 struct sta_info *sta = file->private_data; 290 u32 ac, q_limit_l, q_limit_h; 291 char _buf[100] = {}, *buf = _buf; 292 293 if (count > sizeof(_buf)) 294 return -EINVAL; 295 296 if (copy_from_user(buf, userbuf, count)) 297 return -EFAULT; 298 299 buf[sizeof(_buf) - 1] = '\0'; 300 if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h) 301 != 3) 302 return -EINVAL; 303 304 if (ac >= IEEE80211_NUM_ACS) 305 return -EINVAL; 306 307 sta->airtime[ac].aql_limit_low = q_limit_l; 308 sta->airtime[ac].aql_limit_high = q_limit_h; 309 310 return count; 311 } 312 STA_OPS_RW(aql); 313 314 315 static ssize_t sta_agg_status_do_read(struct wiphy *wiphy, struct file *file, 316 char *buf, size_t bufsz, void *data) 317 { 318 struct sta_info *sta = data; 319 char *p = buf; 320 int i; 321 struct tid_ampdu_rx *tid_rx; 322 struct tid_ampdu_tx *tid_tx; 323 324 p += scnprintf(p, bufsz + buf - p, "next dialog_token: %#02x\n", 325 sta->ampdu_mlme.dialog_token_allocator + 1); 326 p += scnprintf(p, bufsz + buf - p, 327 "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n"); 328 329 for (i = 0; i < IEEE80211_NUM_TIDS; i++) { 330 bool tid_rx_valid; 331 332 tid_rx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_rx[i]); 333 tid_tx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_tx[i]); 334 tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid); 335 336 p += scnprintf(p, bufsz + buf - p, "%02d", i); 337 p += scnprintf(p, bufsz + buf - p, "\t\t%x", 338 tid_rx_valid); 339 p += scnprintf(p, bufsz + buf - p, "\t%#.2x", 340 tid_rx_valid ? 341 sta->ampdu_mlme.tid_rx_token[i] : 0); 342 p += scnprintf(p, bufsz + buf - p, "\t%#.3x", 343 tid_rx ? tid_rx->ssn : 0); 344 345 p += scnprintf(p, bufsz + buf - p, "\t\t%x", !!tid_tx); 346 p += scnprintf(p, bufsz + buf - p, "\t%#.2x", 347 tid_tx ? tid_tx->dialog_token : 0); 348 p += scnprintf(p, bufsz + buf - p, "\t%03d", 349 tid_tx ? skb_queue_len(&tid_tx->pending) : 0); 350 p += scnprintf(p, bufsz + buf - p, "\n"); 351 } 352 353 return p - buf; 354 } 355 356 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, 357 size_t count, loff_t *ppos) 358 { 359 struct sta_info *sta = file->private_data; 360 struct wiphy *wiphy = sta->local->hw.wiphy; 361 size_t bufsz = 71 + IEEE80211_NUM_TIDS * 40; 362 char *buf = kmalloc(bufsz, GFP_KERNEL); 363 ssize_t ret; 364 365 if (!buf) 366 return -ENOMEM; 367 368 ret = wiphy_locked_debugfs_read(wiphy, file, buf, bufsz, 369 userbuf, count, ppos, 370 sta_agg_status_do_read, sta); 371 kfree(buf); 372 373 return ret; 374 } 375 376 static ssize_t sta_agg_status_do_write(struct wiphy *wiphy, struct file *file, 377 char *buf, size_t count, void *data) 378 { 379 struct sta_info *sta = data; 380 bool start, tx; 381 unsigned long tid; 382 char *pos = buf; 383 int ret, timeout = 5000; 384 385 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 } 436 437 static ssize_t sta_agg_status_write(struct file *file, 438 const char __user *userbuf, 439 size_t count, loff_t *ppos) 440 { 441 struct sta_info *sta = file->private_data; 442 struct wiphy *wiphy = sta->local->hw.wiphy; 443 char _buf[26]; 444 445 return wiphy_locked_debugfs_write(wiphy, file, _buf, sizeof(_buf), 446 userbuf, count, 447 sta_agg_status_do_write, sta); 448 } 449 STA_OPS_RW(agg_status); 450 451 /* link sta attributes */ 452 #define LINK_STA_OPS(name) \ 453 static const struct file_operations link_sta_ ##name## _ops = { \ 454 .read = link_sta_##name##_read, \ 455 .open = simple_open, \ 456 .llseek = generic_file_llseek, \ 457 } 458 459 static ssize_t link_sta_addr_read(struct file *file, char __user *userbuf, 460 size_t count, loff_t *ppos) 461 { 462 struct link_sta_info *link_sta = file->private_data; 463 u8 mac[3 * ETH_ALEN + 1]; 464 465 snprintf(mac, sizeof(mac), "%pM\n", link_sta->pub->addr); 466 467 return simple_read_from_buffer(userbuf, count, ppos, mac, 3 * ETH_ALEN); 468 } 469 470 LINK_STA_OPS(addr); 471 472 static ssize_t link_sta_ht_capa_read(struct file *file, char __user *userbuf, 473 size_t count, loff_t *ppos) 474 { 475 #define PRINT_HT_CAP(_cond, _str) \ 476 do { \ 477 if (_cond) \ 478 p += scnprintf(p, bufsz + buf - p, "\t" _str "\n"); \ 479 } while (0) 480 char *buf, *p; 481 int i; 482 ssize_t bufsz = 512; 483 struct link_sta_info *link_sta = file->private_data; 484 struct ieee80211_sta_ht_cap *htc = &link_sta->pub->ht_cap; 485 ssize_t ret; 486 487 buf = kzalloc(bufsz, GFP_KERNEL); 488 if (!buf) 489 return -ENOMEM; 490 p = buf; 491 492 p += scnprintf(p, bufsz + buf - p, "ht %ssupported\n", 493 htc->ht_supported ? "" : "not "); 494 if (htc->ht_supported) { 495 p += scnprintf(p, bufsz + buf - p, "cap: %#.4x\n", htc->cap); 496 497 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC"); 498 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40"); 499 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); 500 501 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save"); 502 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save"); 503 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); 504 505 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield"); 506 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI"); 507 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI"); 508 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); 509 510 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC"); 511 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream"); 512 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams"); 513 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); 514 515 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); 516 517 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " 518 "3839 bytes"); 519 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " 520 "7935 bytes"); 521 522 /* 523 * For beacons and probe response this would mean the BSS 524 * does or does not allow the usage of DSSS/CCK HT40. 525 * Otherwise it means the STA does or does not use 526 * DSSS/CCK HT40. 527 */ 528 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40"); 529 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); 530 531 /* BIT(13) is reserved */ 532 533 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); 534 535 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); 536 537 p += scnprintf(p, bufsz + buf - p, "ampdu factor/density: %d/%d\n", 538 htc->ampdu_factor, htc->ampdu_density); 539 p += scnprintf(p, bufsz + buf - p, "MCS mask:"); 540 541 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 542 p += scnprintf(p, bufsz + buf - p, " %.2x", 543 htc->mcs.rx_mask[i]); 544 p += scnprintf(p, bufsz + buf - p, "\n"); 545 546 /* If not set this is meaningless */ 547 if (le16_to_cpu(htc->mcs.rx_highest)) { 548 p += scnprintf(p, bufsz + buf - p, 549 "MCS rx highest: %d Mbps\n", 550 le16_to_cpu(htc->mcs.rx_highest)); 551 } 552 553 p += scnprintf(p, bufsz + buf - p, "MCS tx params: %x\n", 554 htc->mcs.tx_params); 555 } 556 557 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 558 kfree(buf); 559 return ret; 560 } 561 LINK_STA_OPS(ht_capa); 562 563 static ssize_t link_sta_vht_capa_read(struct file *file, char __user *userbuf, 564 size_t count, loff_t *ppos) 565 { 566 char *buf, *p; 567 struct link_sta_info *link_sta = file->private_data; 568 struct ieee80211_sta_vht_cap *vhtc = &link_sta->pub->vht_cap; 569 ssize_t ret; 570 ssize_t bufsz = 512; 571 572 buf = kzalloc(bufsz, GFP_KERNEL); 573 if (!buf) 574 return -ENOMEM; 575 p = buf; 576 577 p += scnprintf(p, bufsz + buf - p, "VHT %ssupported\n", 578 vhtc->vht_supported ? "" : "not "); 579 if (vhtc->vht_supported) { 580 p += scnprintf(p, bufsz + buf - p, "cap: %#.8x\n", 581 vhtc->cap); 582 #define PFLAG(a, b) \ 583 do { \ 584 if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \ 585 p += scnprintf(p, bufsz + buf - p, \ 586 "\t\t%s\n", b); \ 587 } while (0) 588 589 switch (vhtc->cap & 0x3) { 590 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 591 p += scnprintf(p, bufsz + buf - p, 592 "\t\tMAX-MPDU-3895\n"); 593 break; 594 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 595 p += scnprintf(p, bufsz + buf - p, 596 "\t\tMAX-MPDU-7991\n"); 597 break; 598 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: 599 p += scnprintf(p, bufsz + buf - p, 600 "\t\tMAX-MPDU-11454\n"); 601 break; 602 default: 603 p += scnprintf(p, bufsz + buf - p, 604 "\t\tMAX-MPDU-UNKNOWN\n"); 605 } 606 switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { 607 case 0: 608 p += scnprintf(p, bufsz + buf - p, 609 "\t\t80Mhz\n"); 610 break; 611 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ: 612 p += scnprintf(p, bufsz + buf - p, 613 "\t\t160Mhz\n"); 614 break; 615 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ: 616 p += scnprintf(p, bufsz + buf - p, 617 "\t\t80+80Mhz\n"); 618 break; 619 default: 620 p += scnprintf(p, bufsz + buf - p, 621 "\t\tUNKNOWN-MHZ: 0x%x\n", 622 (vhtc->cap >> 2) & 0x3); 623 } 624 PFLAG(RXLDPC, "RXLDPC"); 625 PFLAG(SHORT_GI_80, "SHORT-GI-80"); 626 PFLAG(SHORT_GI_160, "SHORT-GI-160"); 627 PFLAG(TXSTBC, "TXSTBC"); 628 p += scnprintf(p, bufsz + buf - p, 629 "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7); 630 PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE"); 631 PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE"); 632 p += scnprintf(p, bufsz + buf - p, 633 "\t\tBEAMFORMEE-STS: 0x%x\n", 634 (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >> 635 IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 636 p += scnprintf(p, bufsz + buf - p, 637 "\t\tSOUNDING-DIMENSIONS: 0x%x\n", 638 (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK) 639 >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT); 640 PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE"); 641 PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE"); 642 PFLAG(VHT_TXOP_PS, "TXOP-PS"); 643 PFLAG(HTC_VHT, "HTC-VHT"); 644 p += scnprintf(p, bufsz + buf - p, 645 "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n", 646 (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >> 647 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT); 648 PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB, 649 "LINK-ADAPTATION-VHT-UNSOL-MFB"); 650 p += scnprintf(p, bufsz + buf - p, 651 "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n", 652 (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26); 653 PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN"); 654 PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN"); 655 656 p += scnprintf(p, bufsz + buf - p, "RX MCS: %.4x\n", 657 le16_to_cpu(vhtc->vht_mcs.rx_mcs_map)); 658 if (vhtc->vht_mcs.rx_highest) 659 p += scnprintf(p, bufsz + buf - p, 660 "MCS RX highest: %d Mbps\n", 661 le16_to_cpu(vhtc->vht_mcs.rx_highest)); 662 p += scnprintf(p, bufsz + buf - p, "TX MCS: %.4x\n", 663 le16_to_cpu(vhtc->vht_mcs.tx_mcs_map)); 664 if (vhtc->vht_mcs.tx_highest) 665 p += scnprintf(p, bufsz + buf - p, 666 "MCS TX highest: %d Mbps\n", 667 le16_to_cpu(vhtc->vht_mcs.tx_highest)); 668 #undef PFLAG 669 } 670 671 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 672 kfree(buf); 673 return ret; 674 } 675 LINK_STA_OPS(vht_capa); 676 677 static ssize_t link_sta_he_capa_read(struct file *file, char __user *userbuf, 678 size_t count, loff_t *ppos) 679 { 680 char *buf, *p; 681 size_t buf_sz = PAGE_SIZE; 682 struct link_sta_info *link_sta = file->private_data; 683 struct ieee80211_sta_he_cap *hec = &link_sta->pub->he_cap; 684 struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp; 685 u8 ppe_size; 686 u8 *cap; 687 int i; 688 ssize_t ret; 689 690 buf = kmalloc(buf_sz, GFP_KERNEL); 691 if (!buf) 692 return -ENOMEM; 693 p = buf; 694 695 p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n", 696 hec->has_he ? "" : "not "); 697 if (!hec->has_he) 698 goto out; 699 700 cap = hec->he_cap_elem.mac_cap_info; 701 p += scnprintf(p, buf_sz + buf - p, 702 "MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n", 703 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]); 704 705 #define PRINT(fmt, ...) \ 706 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \ 707 ##__VA_ARGS__) 708 709 #define PFLAG(t, n, a, b) \ 710 do { \ 711 if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a) \ 712 PRINT("%s", b); \ 713 } while (0) 714 715 #define PFLAG_RANGE(t, i, n, s, m, off, fmt) \ 716 do { \ 717 u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK; \ 718 u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off; \ 719 PRINT(fmt, (s << idx) + (m * idx)); \ 720 } while (0) 721 722 #define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b) \ 723 do { \ 724 if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) { \ 725 PRINT("%s", b); \ 726 break; \ 727 } \ 728 PFLAG_RANGE(t, i, n, s, m, off, fmt); \ 729 } while (0) 730 731 PFLAG(MAC, 0, HTC_HE, "HTC-HE"); 732 PFLAG(MAC, 0, TWT_REQ, "TWT-REQ"); 733 PFLAG(MAC, 0, TWT_RES, "TWT-RES"); 734 PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0, 735 "DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP"); 736 PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0, 737 "MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED"); 738 739 PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1, 740 "MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED"); 741 PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0, 742 "TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN"); 743 PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1, 744 "MULTI-TID-AGG-RX-QOS-%d"); 745 746 if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) { 747 switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) { 748 case 0: 749 PRINT("LINK-ADAPTATION-NO-FEEDBACK"); 750 break; 751 case 1: 752 PRINT("LINK-ADAPTATION-RESERVED"); 753 break; 754 case 2: 755 PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK"); 756 break; 757 case 3: 758 PRINT("LINK-ADAPTATION-BOTH"); 759 break; 760 } 761 } 762 763 PFLAG(MAC, 2, ALL_ACK, "ALL-ACK"); 764 PFLAG(MAC, 2, TRS, "TRS"); 765 PFLAG(MAC, 2, BSR, "BSR"); 766 PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT"); 767 PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP"); 768 PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING"); 769 PFLAG(MAC, 2, ACK_EN, "ACK-EN"); 770 771 PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL"); 772 PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA"); 773 774 switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) { 775 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_0: 776 PRINT("MAX-AMPDU-LEN-EXP-USE-EXT-0"); 777 break; 778 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_1: 779 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-1"); 780 break; 781 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_2: 782 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-2"); 783 break; 784 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3: 785 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-3"); 786 break; 787 } 788 789 PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG"); 790 PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED"); 791 PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS"); 792 793 PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG"); 794 PFLAG(MAC, 4, QTP, "QTP"); 795 PFLAG(MAC, 4, BQR, "BQR"); 796 PFLAG(MAC, 4, PSR_RESP, "PSR-RESP"); 797 PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP"); 798 PFLAG(MAC, 4, OPS, "OPS"); 799 PFLAG(MAC, 4, AMSDU_IN_AMPDU, "AMSDU-IN-AMPDU"); 800 801 PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7); 802 803 PFLAG(MAC, 5, SUBCHAN_SELECTIVE_TRANSMISSION, 804 "SUBCHAN-SELECTIVE-TRANSMISSION"); 805 PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU"); 806 PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX"); 807 PFLAG(MAC, 5, HE_DYNAMIC_SM_PS, "HE-DYNAMIC-SM-PS"); 808 PFLAG(MAC, 5, PUNCTURED_SOUNDING, "PUNCTURED-SOUNDING"); 809 PFLAG(MAC, 5, HT_VHT_TRIG_FRAME_RX, "HT-VHT-TRIG-FRAME-RX"); 810 811 cap = hec->he_cap_elem.phy_cap_info; 812 p += scnprintf(p, buf_sz + buf - p, 813 "PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n", 814 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6], 815 cap[7], cap[8], cap[9], cap[10]); 816 817 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G, 818 "CHANNEL-WIDTH-SET-40MHZ-IN-2G"); 819 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G, 820 "CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G"); 821 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G, 822 "CHANNEL-WIDTH-SET-160MHZ-IN-5G"); 823 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G, 824 "CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G"); 825 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G, 826 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G"); 827 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G, 828 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G"); 829 830 switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) { 831 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ: 832 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ"); 833 break; 834 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ: 835 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ"); 836 break; 837 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ: 838 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ"); 839 break; 840 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ: 841 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ"); 842 break; 843 } 844 845 PFLAG(PHY, 1, DEVICE_CLASS_A, 846 "IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A"); 847 PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD, 848 "LDPC-CODING-IN-PAYLOAD"); 849 PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US, 850 "HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US"); 851 PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3); 852 853 PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US"); 854 PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ"); 855 PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ"); 856 PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX"); 857 PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX"); 858 PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO"); 859 PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO"); 860 861 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) { 862 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM: 863 PRINT("DCM-MAX-CONST-TX-NO-DCM"); 864 break; 865 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK: 866 PRINT("DCM-MAX-CONST-TX-BPSK"); 867 break; 868 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK: 869 PRINT("DCM-MAX-CONST-TX-QPSK"); 870 break; 871 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM: 872 PRINT("DCM-MAX-CONST-TX-16-QAM"); 873 break; 874 } 875 876 PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1"); 877 PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2"); 878 879 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) { 880 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM: 881 PRINT("DCM-MAX-CONST-RX-NO-DCM"); 882 break; 883 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK: 884 PRINT("DCM-MAX-CONST-RX-BPSK"); 885 break; 886 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK: 887 PRINT("DCM-MAX-CONST-RX-QPSK"); 888 break; 889 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM: 890 PRINT("DCM-MAX-CONST-RX-16-QAM"); 891 break; 892 } 893 894 PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1"); 895 PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2"); 896 PFLAG(PHY, 3, RX_PARTIAL_BW_SU_IN_20MHZ_MU, 897 "RX-PARTIAL-BW-SU-IN-20MHZ-MU"); 898 PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER"); 899 900 PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE"); 901 PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER"); 902 903 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4, 904 "BEAMFORMEE-MAX-STS-UNDER-%d"); 905 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4, 906 "BEAMFORMEE-MAX-STS-ABOVE-%d"); 907 908 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1, 909 "NUM-SND-DIM-UNDER-80MHZ-%d"); 910 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1, 911 "NUM-SND-DIM-ABOVE-80MHZ-%d"); 912 PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK"); 913 PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK"); 914 915 PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU"); 916 PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU"); 917 PFLAG(PHY, 6, TRIG_SU_BEAMFORMING_FB, "TRIG-SU-BEAMFORMING-FB"); 918 PFLAG(PHY, 6, TRIG_MU_BEAMFORMING_PARTIAL_BW_FB, 919 "MU-BEAMFORMING-PARTIAL-BW-FB"); 920 PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB"); 921 PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE"); 922 PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO, 923 "PARTIAL-BANDWIDTH-DL-MUMIMO"); 924 PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT"); 925 926 PFLAG(PHY, 7, PSR_BASED_SR, "PSR-BASED-SR"); 927 PFLAG(PHY, 7, POWER_BOOST_FACTOR_SUPP, "POWER-BOOST-FACTOR-SUPP"); 928 PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI, 929 "HE-SU-MU-PPDU-4XLTF-AND-08-US-GI"); 930 PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d"); 931 PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ"); 932 PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ"); 933 934 PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI, 935 "HE-ER-SU-PPDU-4XLTF-AND-08-US-GI"); 936 PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G, 937 "20MHZ-IN-40MHZ-HE-PPDU-IN-2G"); 938 PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU"); 939 PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU"); 940 PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI, 941 "HE-ER-SU-1XLTF-AND-08-US-GI"); 942 PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF, 943 "MIDAMBLE-RX-TX-2X-AND-1XLTF"); 944 945 switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK) { 946 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242: 947 PRINT("DCM-MAX-RU-242"); 948 break; 949 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484: 950 PRINT("DCM-MAX-RU-484"); 951 break; 952 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996: 953 PRINT("DCM-MAX-RU-996"); 954 break; 955 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996: 956 PRINT("DCM-MAX-RU-2x996"); 957 break; 958 } 959 960 PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM, 961 "LONGER-THAN-16-SIGB-OFDM-SYM"); 962 PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK, 963 "NON-TRIGGERED-CQI-FEEDBACK"); 964 PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU, 965 "TX-1024-QAM-LESS-THAN-242-TONE-RU"); 966 PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU, 967 "RX-1024-QAM-LESS-THAN-242-TONE-RU"); 968 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB, 969 "RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB"); 970 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB, 971 "RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB"); 972 973 switch (u8_get_bits(cap[9], 974 IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK)) { 975 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US: 976 PRINT("NOMINAL-PACKET-PADDING-0US"); 977 break; 978 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US: 979 PRINT("NOMINAL-PACKET-PADDING-8US"); 980 break; 981 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US: 982 PRINT("NOMINAL-PACKET-PADDING-16US"); 983 break; 984 } 985 986 #undef PFLAG_RANGE_DEFAULT 987 #undef PFLAG_RANGE 988 #undef PFLAG 989 990 #define PRINT_NSS_SUPP(f, n) \ 991 do { \ 992 int _i; \ 993 u16 v = le16_to_cpu(nss->f); \ 994 p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v); \ 995 for (_i = 0; _i < 8; _i += 2) { \ 996 switch ((v >> _i) & 0x3) { \ 997 case 0: \ 998 PRINT(n "-%d-SUPPORT-0-7", _i / 2); \ 999 break; \ 1000 case 1: \ 1001 PRINT(n "-%d-SUPPORT-0-9", _i / 2); \ 1002 break; \ 1003 case 2: \ 1004 PRINT(n "-%d-SUPPORT-0-11", _i / 2); \ 1005 break; \ 1006 case 3: \ 1007 PRINT(n "-%d-NOT-SUPPORTED", _i / 2); \ 1008 break; \ 1009 } \ 1010 } \ 1011 } while (0) 1012 1013 PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80"); 1014 PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80"); 1015 1016 if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) { 1017 PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160"); 1018 PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160"); 1019 } 1020 1021 if (cap[0] & 1022 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) { 1023 PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80"); 1024 PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80"); 1025 } 1026 1027 #undef PRINT_NSS_SUPP 1028 #undef PRINT 1029 1030 if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)) 1031 goto out; 1032 1033 p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x", 1034 hec->ppe_thres[0]); 1035 1036 ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap); 1037 for (i = 1; i < ppe_size; i++) { 1038 p += scnprintf(p, buf_sz + buf - p, " %#.2x", 1039 hec->ppe_thres[i]); 1040 } 1041 p += scnprintf(p, buf_sz + buf - p, "\n"); 1042 1043 out: 1044 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 1045 kfree(buf); 1046 return ret; 1047 } 1048 LINK_STA_OPS(he_capa); 1049 1050 static ssize_t link_sta_eht_capa_read(struct file *file, char __user *userbuf, 1051 size_t count, loff_t *ppos) 1052 { 1053 char *buf, *p; 1054 size_t buf_sz = PAGE_SIZE; 1055 struct link_sta_info *link_sta = file->private_data; 1056 struct ieee80211_sta_eht_cap *bec = &link_sta->pub->eht_cap; 1057 struct ieee80211_eht_cap_elem_fixed *fixed = &bec->eht_cap_elem; 1058 struct ieee80211_eht_mcs_nss_supp *nss = &bec->eht_mcs_nss_supp; 1059 u8 *cap; 1060 int i; 1061 ssize_t ret; 1062 static const char *mcs_desc[] = { "0-7", "8-9", "10-11", "12-13"}; 1063 1064 buf = kmalloc(buf_sz, GFP_KERNEL); 1065 if (!buf) 1066 return -ENOMEM; 1067 p = buf; 1068 1069 p += scnprintf(p, buf_sz + buf - p, "EHT %ssupported\n", 1070 bec->has_eht ? "" : "not "); 1071 if (!bec->has_eht) 1072 goto out; 1073 1074 p += scnprintf(p, buf_sz + buf - p, 1075 "MAC-CAP: %#.2x %#.2x\n", 1076 fixed->mac_cap_info[0], fixed->mac_cap_info[1]); 1077 p += scnprintf(p, buf_sz + buf - p, 1078 "PHY-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n", 1079 fixed->phy_cap_info[0], fixed->phy_cap_info[1], 1080 fixed->phy_cap_info[2], fixed->phy_cap_info[3], 1081 fixed->phy_cap_info[4], fixed->phy_cap_info[5], 1082 fixed->phy_cap_info[6], fixed->phy_cap_info[7], 1083 fixed->phy_cap_info[8]); 1084 1085 #define PRINT(fmt, ...) \ 1086 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \ 1087 ##__VA_ARGS__) 1088 1089 #define PFLAG(t, n, a, b) \ 1090 do { \ 1091 if (cap[n] & IEEE80211_EHT_##t##_CAP##n##_##a) \ 1092 PRINT("%s", b); \ 1093 } while (0) 1094 1095 cap = fixed->mac_cap_info; 1096 PFLAG(MAC, 0, EPCS_PRIO_ACCESS, "EPCS-PRIO-ACCESS"); 1097 PFLAG(MAC, 0, OM_CONTROL, "OM-CONTROL"); 1098 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE1, "TRIG-TXOP-SHARING-MODE1"); 1099 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE2, "TRIG-TXOP-SHARING-MODE2"); 1100 PFLAG(MAC, 0, RESTRICTED_TWT, "RESTRICTED-TWT"); 1101 PFLAG(MAC, 0, SCS_TRAFFIC_DESC, "SCS-TRAFFIC-DESC"); 1102 switch ((cap[0] & 0xc0) >> 6) { 1103 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_3895: 1104 PRINT("MAX-MPDU-LEN: 3985"); 1105 break; 1106 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991: 1107 PRINT("MAX-MPDU-LEN: 7991"); 1108 break; 1109 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454: 1110 PRINT("MAX-MPDU-LEN: 11454"); 1111 break; 1112 } 1113 1114 cap = fixed->phy_cap_info; 1115 PFLAG(PHY, 0, 320MHZ_IN_6GHZ, "320MHZ-IN-6GHZ"); 1116 PFLAG(PHY, 0, 242_TONE_RU_GT20MHZ, "242-TONE-RU-GT20MHZ"); 1117 PFLAG(PHY, 0, NDP_4_EHT_LFT_32_GI, "NDP-4-EHT-LFT-32-GI"); 1118 PFLAG(PHY, 0, PARTIAL_BW_UL_MU_MIMO, "PARTIAL-BW-UL-MU-MIMO"); 1119 PFLAG(PHY, 0, SU_BEAMFORMER, "SU-BEAMFORMER"); 1120 PFLAG(PHY, 0, SU_BEAMFORMEE, "SU-BEAMFORMEE"); 1121 i = cap[0] >> 7; 1122 i |= (cap[1] & 0x3) << 1; 1123 PRINT("BEAMFORMEE-80-NSS: %i", i); 1124 PRINT("BEAMFORMEE-160-NSS: %i", (cap[1] >> 2) & 0x7); 1125 PRINT("BEAMFORMEE-320-NSS: %i", (cap[1] >> 5) & 0x7); 1126 PRINT("SOUNDING-DIM-80-NSS: %i", (cap[2] & 0x7)); 1127 PRINT("SOUNDING-DIM-160-NSS: %i", (cap[2] >> 3) & 0x7); 1128 i = cap[2] >> 6; 1129 i |= (cap[3] & 0x1) << 3; 1130 PRINT("SOUNDING-DIM-320-NSS: %i", i); 1131 1132 PFLAG(PHY, 3, NG_16_SU_FEEDBACK, "NG-16-SU-FEEDBACK"); 1133 PFLAG(PHY, 3, NG_16_MU_FEEDBACK, "NG-16-MU-FEEDBACK"); 1134 PFLAG(PHY, 3, CODEBOOK_4_2_SU_FDBK, "CODEBOOK-4-2-SU-FDBK"); 1135 PFLAG(PHY, 3, CODEBOOK_7_5_MU_FDBK, "CODEBOOK-7-5-MU-FDBK"); 1136 PFLAG(PHY, 3, TRIG_SU_BF_FDBK, "TRIG-SU-BF-FDBK"); 1137 PFLAG(PHY, 3, TRIG_MU_BF_PART_BW_FDBK, "TRIG-MU-BF-PART-BW-FDBK"); 1138 PFLAG(PHY, 3, TRIG_CQI_FDBK, "TRIG-CQI-FDBK"); 1139 1140 PFLAG(PHY, 4, PART_BW_DL_MU_MIMO, "PART-BW-DL-MU-MIMO"); 1141 PFLAG(PHY, 4, PSR_SR_SUPP, "PSR-SR-SUPP"); 1142 PFLAG(PHY, 4, POWER_BOOST_FACT_SUPP, "POWER-BOOST-FACT-SUPP"); 1143 PFLAG(PHY, 4, EHT_MU_PPDU_4_EHT_LTF_08_GI, "EHT-MU-PPDU-4-EHT-LTF-08-GI"); 1144 PRINT("MAX_NC: %i", cap[4] >> 4); 1145 1146 PFLAG(PHY, 5, NON_TRIG_CQI_FEEDBACK, "NON-TRIG-CQI-FEEDBACK"); 1147 PFLAG(PHY, 5, TX_LESS_242_TONE_RU_SUPP, "TX-LESS-242-TONE-RU-SUPP"); 1148 PFLAG(PHY, 5, RX_LESS_242_TONE_RU_SUPP, "RX-LESS-242-TONE-RU-SUPP"); 1149 PFLAG(PHY, 5, PPE_THRESHOLD_PRESENT, "PPE_THRESHOLD_PRESENT"); 1150 switch (cap[5] >> 4 & 0x3) { 1151 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_0US: 1152 PRINT("NOMINAL_PKT_PAD: 0us"); 1153 break; 1154 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_8US: 1155 PRINT("NOMINAL_PKT_PAD: 8us"); 1156 break; 1157 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_16US: 1158 PRINT("NOMINAL_PKT_PAD: 16us"); 1159 break; 1160 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_20US: 1161 PRINT("NOMINAL_PKT_PAD: 20us"); 1162 break; 1163 } 1164 i = cap[5] >> 6; 1165 i |= cap[6] & 0x7; 1166 PRINT("MAX-NUM-SUPP-EHT-LTF: %i", i); 1167 PFLAG(PHY, 5, SUPP_EXTRA_EHT_LTF, "SUPP-EXTRA-EHT-LTF"); 1168 1169 i = (cap[6] >> 3) & 0xf; 1170 PRINT("MCS15-SUPP-MASK: %i", i); 1171 PFLAG(PHY, 6, EHT_DUP_6GHZ_SUPP, "EHT-DUP-6GHZ-SUPP"); 1172 1173 PFLAG(PHY, 7, 20MHZ_STA_RX_NDP_WIDER_BW, "20MHZ-STA-RX-NDP-WIDER-BW"); 1174 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_80MHZ, "NON-OFDMA-UL-MU-MIMO-80MHZ"); 1175 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_160MHZ, "NON-OFDMA-UL-MU-MIMO-160MHZ"); 1176 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_320MHZ, "NON-OFDMA-UL-MU-MIMO-320MHZ"); 1177 PFLAG(PHY, 7, MU_BEAMFORMER_80MHZ, "MU-BEAMFORMER-80MHZ"); 1178 PFLAG(PHY, 7, MU_BEAMFORMER_160MHZ, "MU-BEAMFORMER-160MHZ"); 1179 PFLAG(PHY, 7, MU_BEAMFORMER_320MHZ, "MU-BEAMFORMER-320MHZ"); 1180 PFLAG(PHY, 7, TB_SOUNDING_FDBK_RATE_LIMIT, "TB-SOUNDING-FDBK-RATE-LIMIT"); 1181 1182 PFLAG(PHY, 8, RX_1024QAM_WIDER_BW_DL_OFDMA, "RX-1024QAM-WIDER-BW-DL-OFDMA"); 1183 PFLAG(PHY, 8, RX_4096QAM_WIDER_BW_DL_OFDMA, "RX-4096QAM-WIDER-BW-DL-OFDMA"); 1184 1185 #undef PFLAG 1186 1187 PRINT(""); /* newline */ 1188 if (!(link_sta->pub->he_cap.he_cap_elem.phy_cap_info[0] & 1189 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) { 1190 u8 *mcs_vals = (u8 *)(&nss->only_20mhz); 1191 1192 for (i = 0; i < 4; i++) 1193 PRINT("EHT bw=20 MHz, max NSS for MCS %s: Rx=%u, Tx=%u", 1194 mcs_desc[i], 1195 mcs_vals[i] & 0xf, mcs_vals[i] >> 4); 1196 } else { 1197 u8 *mcs_vals = (u8 *)(&nss->bw._80); 1198 1199 for (i = 0; i < 3; i++) 1200 PRINT("EHT bw <= 80 MHz, max NSS for MCS %s: Rx=%u, Tx=%u", 1201 mcs_desc[i + 1], 1202 mcs_vals[i] & 0xf, mcs_vals[i] >> 4); 1203 1204 mcs_vals = (u8 *)(&nss->bw._160); 1205 for (i = 0; i < 3; i++) 1206 PRINT("EHT bw <= 160 MHz, max NSS for MCS %s: Rx=%u, Tx=%u", 1207 mcs_desc[i + 1], 1208 mcs_vals[i] & 0xf, mcs_vals[i] >> 4); 1209 1210 mcs_vals = (u8 *)(&nss->bw._320); 1211 for (i = 0; i < 3; i++) 1212 PRINT("EHT bw <= 320 MHz, max NSS for MCS %s: Rx=%u, Tx=%u", 1213 mcs_desc[i + 1], 1214 mcs_vals[i] & 0xf, mcs_vals[i] >> 4); 1215 } 1216 1217 if (cap[5] & IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) { 1218 u8 ppe_size = ieee80211_eht_ppe_size(bec->eht_ppe_thres[0], cap); 1219 1220 p += scnprintf(p, buf_sz + buf - p, "EHT PPE Thresholds: "); 1221 for (i = 0; i < ppe_size; i++) 1222 p += scnprintf(p, buf_sz + buf - p, "0x%02x ", 1223 bec->eht_ppe_thres[i]); 1224 PRINT(""); /* newline */ 1225 } 1226 1227 out: 1228 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 1229 kfree(buf); 1230 return ret; 1231 } 1232 LINK_STA_OPS(eht_capa); 1233 1234 #define DEBUGFS_ADD(name) \ 1235 debugfs_create_file(#name, 0400, \ 1236 sta->debugfs_dir, sta, &sta_ ##name## _ops) 1237 1238 #define DEBUGFS_ADD_COUNTER(name, field) \ 1239 debugfs_create_ulong(#name, 0400, sta->debugfs_dir, &sta->field); 1240 1241 void ieee80211_sta_debugfs_add(struct sta_info *sta) 1242 { 1243 struct ieee80211_local *local = sta->local; 1244 struct ieee80211_sub_if_data *sdata = sta->sdata; 1245 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations; 1246 u8 mac[3*ETH_ALEN]; 1247 1248 if (!stations_dir) 1249 return; 1250 1251 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); 1252 1253 /* 1254 * This might fail due to a race condition: 1255 * When mac80211 unlinks a station, the debugfs entries 1256 * remain, but it is already possible to link a new 1257 * station with the same address which triggers adding 1258 * it to debugfs; therefore, if the old station isn't 1259 * destroyed quickly enough the old station's debugfs 1260 * dir might still be around. 1261 */ 1262 sta->debugfs_dir = debugfs_create_dir(mac, stations_dir); 1263 1264 DEBUGFS_ADD(flags); 1265 DEBUGFS_ADD(aid); 1266 DEBUGFS_ADD(num_ps_buf_frames); 1267 DEBUGFS_ADD(last_seq_ctrl); 1268 DEBUGFS_ADD(agg_status); 1269 /* FIXME: Kept here as the statistics are only done on the deflink */ 1270 DEBUGFS_ADD_COUNTER(tx_filtered, deflink.status_stats.filtered); 1271 1272 DEBUGFS_ADD(aqm); 1273 DEBUGFS_ADD(airtime); 1274 1275 if (wiphy_ext_feature_isset(local->hw.wiphy, 1276 NL80211_EXT_FEATURE_AQL)) 1277 DEBUGFS_ADD(aql); 1278 1279 debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir, 1280 &sta->driver_buffered_tids); 1281 1282 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir); 1283 } 1284 1285 void ieee80211_sta_debugfs_remove(struct sta_info *sta) 1286 { 1287 debugfs_remove_recursive(sta->debugfs_dir); 1288 sta->debugfs_dir = NULL; 1289 } 1290 1291 #undef DEBUGFS_ADD 1292 #undef DEBUGFS_ADD_COUNTER 1293 1294 #define DEBUGFS_ADD(name) \ 1295 debugfs_create_file(#name, 0400, \ 1296 link_sta->debugfs_dir, link_sta, &link_sta_ ##name## _ops) 1297 #define DEBUGFS_ADD_COUNTER(name, field) \ 1298 debugfs_create_ulong(#name, 0400, link_sta->debugfs_dir, &link_sta->field) 1299 1300 void ieee80211_link_sta_debugfs_add(struct link_sta_info *link_sta) 1301 { 1302 if (WARN_ON(!link_sta->sta->debugfs_dir)) 1303 return; 1304 1305 /* For non-MLO, leave the files in the main directory. */ 1306 if (link_sta->sta->sta.valid_links) { 1307 char link_dir_name[10]; 1308 1309 snprintf(link_dir_name, sizeof(link_dir_name), 1310 "link-%d", link_sta->link_id); 1311 1312 link_sta->debugfs_dir = 1313 debugfs_create_dir(link_dir_name, 1314 link_sta->sta->debugfs_dir); 1315 1316 DEBUGFS_ADD(addr); 1317 } else { 1318 if (WARN_ON(link_sta != &link_sta->sta->deflink)) 1319 return; 1320 1321 link_sta->debugfs_dir = link_sta->sta->debugfs_dir; 1322 } 1323 1324 DEBUGFS_ADD(ht_capa); 1325 DEBUGFS_ADD(vht_capa); 1326 DEBUGFS_ADD(he_capa); 1327 DEBUGFS_ADD(eht_capa); 1328 1329 DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates); 1330 DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments); 1331 } 1332 1333 void ieee80211_link_sta_debugfs_remove(struct link_sta_info *link_sta) 1334 { 1335 if (!link_sta->debugfs_dir || !link_sta->sta->debugfs_dir) { 1336 link_sta->debugfs_dir = NULL; 1337 return; 1338 } 1339 1340 if (link_sta->debugfs_dir == link_sta->sta->debugfs_dir) { 1341 WARN_ON(link_sta != &link_sta->sta->deflink); 1342 link_sta->sta->debugfs_dir = NULL; 1343 return; 1344 } 1345 1346 debugfs_remove_recursive(link_sta->debugfs_dir); 1347 link_sta->debugfs_dir = NULL; 1348 } 1349 1350 void ieee80211_link_sta_debugfs_drv_add(struct link_sta_info *link_sta) 1351 { 1352 if (WARN_ON(!link_sta->debugfs_dir)) 1353 return; 1354 1355 drv_link_sta_add_debugfs(link_sta->sta->local, link_sta->sta->sdata, 1356 link_sta->pub, link_sta->debugfs_dir); 1357 } 1358 1359 void ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info *link_sta) 1360 { 1361 if (!link_sta->debugfs_dir) 1362 return; 1363 1364 if (WARN_ON(link_sta->debugfs_dir == link_sta->sta->debugfs_dir)) 1365 return; 1366 1367 /* Recreate the directory excluding the driver data */ 1368 debugfs_remove_recursive(link_sta->debugfs_dir); 1369 link_sta->debugfs_dir = NULL; 1370 1371 ieee80211_link_sta_debugfs_add(link_sta); 1372 } 1373