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
sta_flags_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)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
sta_num_ps_buf_frames_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)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
sta_last_seq_ctrl_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)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
sta_aqm_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)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 "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");
158
159 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
160 if (!sta->sta.txq[i])
161 continue;
162 txqi = to_txq_info(sta->sta.txq[i]);
163 p += scnprintf(p, bufsz + buf - p,
164 "%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s%s)\n",
165 txqi->txq.tid,
166 txqi->txq.ac,
167 txqi->tin.backlog_bytes,
168 txqi->tin.backlog_packets,
169 txqi->tin.flows,
170 txqi->cstats.drop_count,
171 txqi->cstats.ecn_mark,
172 txqi->tin.overlimit,
173 txqi->tin.collisions,
174 txqi->tin.tx_bytes,
175 txqi->tin.tx_packets,
176 txqi->flags,
177 test_bit(IEEE80211_TXQ_STOP, &txqi->flags) ? "STOP" : "RUN",
178 test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags) ? " AMPDU" : "",
179 test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags) ? " NO-AMSDU" : "",
180 test_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ? " DIRTY" : "");
181 }
182
183 rcu_read_unlock();
184 spin_unlock_bh(&local->fq.lock);
185
186 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
187 kfree(buf);
188 return rv;
189 }
190 STA_OPS(aqm);
191
sta_airtime_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)192 static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
193 size_t count, loff_t *ppos)
194 {
195 struct sta_info *sta = file->private_data;
196 struct ieee80211_local *local = sta->sdata->local;
197 size_t bufsz = 400;
198 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
199 u64 rx_airtime = 0, tx_airtime = 0;
200 s32 deficit[IEEE80211_NUM_ACS];
201 ssize_t rv;
202 int ac;
203
204 if (!buf)
205 return -ENOMEM;
206
207 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
208 spin_lock_bh(&local->active_txq_lock[ac]);
209 rx_airtime += sta->airtime[ac].rx_airtime;
210 tx_airtime += sta->airtime[ac].tx_airtime;
211 deficit[ac] = sta->airtime[ac].deficit;
212 spin_unlock_bh(&local->active_txq_lock[ac]);
213 }
214
215 p += scnprintf(p, bufsz + buf - p,
216 "RX: %llu us\nTX: %llu us\nWeight: %u\n"
217 "Deficit: VO: %d us VI: %d us BE: %d us BK: %d us\n",
218 rx_airtime, tx_airtime, sta->airtime_weight,
219 deficit[0], deficit[1], deficit[2], deficit[3]);
220
221 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
222 kfree(buf);
223 return rv;
224 }
225
sta_airtime_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)226 static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
227 size_t count, loff_t *ppos)
228 {
229 struct sta_info *sta = file->private_data;
230 struct ieee80211_local *local = sta->sdata->local;
231 int ac;
232
233 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
234 spin_lock_bh(&local->active_txq_lock[ac]);
235 sta->airtime[ac].rx_airtime = 0;
236 sta->airtime[ac].tx_airtime = 0;
237 sta->airtime[ac].deficit = sta->airtime_weight;
238 spin_unlock_bh(&local->active_txq_lock[ac]);
239 }
240
241 return count;
242 }
243 STA_OPS_RW(airtime);
244
sta_aql_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)245 static ssize_t sta_aql_read(struct file *file, char __user *userbuf,
246 size_t count, loff_t *ppos)
247 {
248 struct sta_info *sta = file->private_data;
249 struct ieee80211_local *local = sta->sdata->local;
250 size_t bufsz = 400;
251 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
252 u32 q_depth[IEEE80211_NUM_ACS];
253 u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS];
254 ssize_t rv;
255 int ac;
256
257 if (!buf)
258 return -ENOMEM;
259
260 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
261 spin_lock_bh(&local->active_txq_lock[ac]);
262 q_limit_l[ac] = sta->airtime[ac].aql_limit_low;
263 q_limit_h[ac] = sta->airtime[ac].aql_limit_high;
264 spin_unlock_bh(&local->active_txq_lock[ac]);
265 q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending);
266 }
267
268 p += scnprintf(p, bufsz + buf - p,
269 "Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n"
270 "Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n",
271 q_depth[0], q_depth[1], q_depth[2], q_depth[3],
272 q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1],
273 q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]);
274
275 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
276 kfree(buf);
277 return rv;
278 }
279
sta_aql_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)280 static ssize_t sta_aql_write(struct file *file, const char __user *userbuf,
281 size_t count, loff_t *ppos)
282 {
283 struct sta_info *sta = file->private_data;
284 u32 ac, q_limit_l, q_limit_h;
285 char _buf[100] = {}, *buf = _buf;
286
287 if (count > sizeof(_buf))
288 return -EINVAL;
289
290 if (copy_from_user(buf, userbuf, count))
291 return -EFAULT;
292
293 buf[sizeof(_buf) - 1] = '\0';
294 if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h)
295 != 3)
296 return -EINVAL;
297
298 if (ac >= IEEE80211_NUM_ACS)
299 return -EINVAL;
300
301 sta->airtime[ac].aql_limit_low = q_limit_l;
302 sta->airtime[ac].aql_limit_high = q_limit_h;
303
304 return count;
305 }
306 STA_OPS_RW(aql);
307
308
sta_agg_status_do_read(struct wiphy * wiphy,struct file * file,char * buf,size_t bufsz,void * data)309 static ssize_t sta_agg_status_do_read(struct wiphy *wiphy, struct file *file,
310 char *buf, size_t bufsz, void *data)
311 {
312 struct sta_info *sta = data;
313 char *p = buf;
314 int i;
315 struct tid_ampdu_rx *tid_rx;
316 struct tid_ampdu_tx *tid_tx;
317
318 p += scnprintf(p, bufsz + buf - p, "next dialog_token: %#02x\n",
319 sta->ampdu_mlme.dialog_token_allocator + 1);
320 p += scnprintf(p, bufsz + buf - p,
321 "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
322
323 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
324 bool tid_rx_valid;
325
326 tid_rx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_rx[i]);
327 tid_tx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_tx[i]);
328 tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);
329
330 p += scnprintf(p, bufsz + buf - p, "%02d", i);
331 p += scnprintf(p, bufsz + buf - p, "\t\t%x",
332 tid_rx_valid);
333 p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
334 tid_rx_valid ?
335 sta->ampdu_mlme.tid_rx_token[i] : 0);
336 p += scnprintf(p, bufsz + buf - p, "\t%#.3x",
337 tid_rx ? tid_rx->ssn : 0);
338
339 p += scnprintf(p, bufsz + buf - p, "\t\t%x", !!tid_tx);
340 p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
341 tid_tx ? tid_tx->dialog_token : 0);
342 p += scnprintf(p, bufsz + buf - p, "\t%03d",
343 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
344 p += scnprintf(p, bufsz + buf - p, "\n");
345 }
346
347 return p - buf;
348 }
349
sta_agg_status_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)350 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
351 size_t count, loff_t *ppos)
352 {
353 struct sta_info *sta = file->private_data;
354 struct wiphy *wiphy = sta->local->hw.wiphy;
355 size_t bufsz = 71 + IEEE80211_NUM_TIDS * 40;
356 char *buf = kmalloc(bufsz, GFP_KERNEL);
357 ssize_t ret;
358
359 if (!buf)
360 return -ENOMEM;
361
362 ret = wiphy_locked_debugfs_read(wiphy, file, buf, bufsz,
363 userbuf, count, ppos,
364 sta_agg_status_do_read, sta);
365 kfree(buf);
366
367 return ret;
368 }
369
sta_agg_status_do_write(struct wiphy * wiphy,struct file * file,char * buf,size_t count,void * data)370 static ssize_t sta_agg_status_do_write(struct wiphy *wiphy, struct file *file,
371 char *buf, size_t count, void *data)
372 {
373 struct sta_info *sta = data;
374 bool start, tx;
375 unsigned long tid;
376 char *pos = buf;
377 int ret, timeout = 5000;
378
379 buf = strsep(&pos, " ");
380 if (!buf)
381 return -EINVAL;
382
383 if (!strcmp(buf, "tx"))
384 tx = true;
385 else if (!strcmp(buf, "rx"))
386 tx = false;
387 else
388 return -EINVAL;
389
390 buf = strsep(&pos, " ");
391 if (!buf)
392 return -EINVAL;
393 if (!strcmp(buf, "start")) {
394 start = true;
395 if (!tx)
396 return -EINVAL;
397 } else if (!strcmp(buf, "stop")) {
398 start = false;
399 } else {
400 return -EINVAL;
401 }
402
403 buf = strsep(&pos, " ");
404 if (!buf)
405 return -EINVAL;
406 if (sscanf(buf, "timeout=%d", &timeout) == 1) {
407 buf = strsep(&pos, " ");
408 if (!buf || !tx || !start)
409 return -EINVAL;
410 }
411
412 ret = kstrtoul(buf, 0, &tid);
413 if (ret || tid >= IEEE80211_NUM_TIDS)
414 return -EINVAL;
415
416 if (tx) {
417 if (start)
418 ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
419 timeout);
420 else
421 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
422 } else {
423 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
424 3, true);
425 ret = 0;
426 }
427
428 return ret ?: count;
429 }
430
sta_agg_status_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)431 static ssize_t sta_agg_status_write(struct file *file,
432 const char __user *userbuf,
433 size_t count, loff_t *ppos)
434 {
435 struct sta_info *sta = file->private_data;
436 struct wiphy *wiphy = sta->local->hw.wiphy;
437 char _buf[26];
438
439 return wiphy_locked_debugfs_write(wiphy, file, _buf, sizeof(_buf),
440 userbuf, count,
441 sta_agg_status_do_write, sta);
442 }
443 STA_OPS_RW(agg_status);
444
445 /* link sta attributes */
446 #define LINK_STA_OPS(name) \
447 static const struct file_operations link_sta_ ##name## _ops = { \
448 .read = link_sta_##name##_read, \
449 .open = simple_open, \
450 .llseek = generic_file_llseek, \
451 }
452
link_sta_addr_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)453 static ssize_t link_sta_addr_read(struct file *file, char __user *userbuf,
454 size_t count, loff_t *ppos)
455 {
456 struct link_sta_info *link_sta = file->private_data;
457 u8 mac[3 * ETH_ALEN + 1];
458
459 snprintf(mac, sizeof(mac), "%pM\n", link_sta->pub->addr);
460
461 return simple_read_from_buffer(userbuf, count, ppos, mac, 3 * ETH_ALEN);
462 }
463
464 LINK_STA_OPS(addr);
465
link_sta_ht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)466 static ssize_t link_sta_ht_capa_read(struct file *file, char __user *userbuf,
467 size_t count, loff_t *ppos)
468 {
469 #define PRINT_HT_CAP(_cond, _str) \
470 do { \
471 if (_cond) \
472 p += scnprintf(p, bufsz + buf - p, "\t" _str "\n"); \
473 } while (0)
474 char *buf, *p;
475 int i;
476 ssize_t bufsz = 512;
477 struct link_sta_info *link_sta = file->private_data;
478 struct ieee80211_sta_ht_cap *htc = &link_sta->pub->ht_cap;
479 ssize_t ret;
480
481 buf = kzalloc(bufsz, GFP_KERNEL);
482 if (!buf)
483 return -ENOMEM;
484 p = buf;
485
486 p += scnprintf(p, bufsz + buf - p, "ht %ssupported\n",
487 htc->ht_supported ? "" : "not ");
488 if (htc->ht_supported) {
489 p += scnprintf(p, bufsz + buf - p, "cap: %#.4x\n", htc->cap);
490
491 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
492 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
493 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
494
495 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
496 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
497 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
498
499 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
500 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
501 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
502 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
503
504 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
505 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
506 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
507 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
508
509 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
510
511 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
512 "3839 bytes");
513 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
514 "7935 bytes");
515
516 /*
517 * For beacons and probe response this would mean the BSS
518 * does or does not allow the usage of DSSS/CCK HT40.
519 * Otherwise it means the STA does or does not use
520 * DSSS/CCK HT40.
521 */
522 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
523 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
524
525 /* BIT(13) is reserved */
526
527 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
528
529 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
530
531 p += scnprintf(p, bufsz + buf - p, "ampdu factor/density: %d/%d\n",
532 htc->ampdu_factor, htc->ampdu_density);
533 p += scnprintf(p, bufsz + buf - p, "MCS mask:");
534
535 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
536 p += scnprintf(p, bufsz + buf - p, " %.2x",
537 htc->mcs.rx_mask[i]);
538 p += scnprintf(p, bufsz + buf - p, "\n");
539
540 /* If not set this is meaningless */
541 if (le16_to_cpu(htc->mcs.rx_highest)) {
542 p += scnprintf(p, bufsz + buf - p,
543 "MCS rx highest: %d Mbps\n",
544 le16_to_cpu(htc->mcs.rx_highest));
545 }
546
547 p += scnprintf(p, bufsz + buf - p, "MCS tx params: %x\n",
548 htc->mcs.tx_params);
549 }
550
551 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
552 kfree(buf);
553 return ret;
554 }
555 LINK_STA_OPS(ht_capa);
556
link_sta_vht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)557 static ssize_t link_sta_vht_capa_read(struct file *file, char __user *userbuf,
558 size_t count, loff_t *ppos)
559 {
560 char *buf, *p;
561 struct link_sta_info *link_sta = file->private_data;
562 struct ieee80211_sta_vht_cap *vhtc = &link_sta->pub->vht_cap;
563 ssize_t ret;
564 ssize_t bufsz = 512;
565
566 buf = kzalloc(bufsz, GFP_KERNEL);
567 if (!buf)
568 return -ENOMEM;
569 p = buf;
570
571 p += scnprintf(p, bufsz + buf - p, "VHT %ssupported\n",
572 vhtc->vht_supported ? "" : "not ");
573 if (vhtc->vht_supported) {
574 p += scnprintf(p, bufsz + buf - p, "cap: %#.8x\n",
575 vhtc->cap);
576 #define PFLAG(a, b) \
577 do { \
578 if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \
579 p += scnprintf(p, bufsz + buf - p, \
580 "\t\t%s\n", b); \
581 } while (0)
582
583 switch (vhtc->cap & 0x3) {
584 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
585 p += scnprintf(p, bufsz + buf - p,
586 "\t\tMAX-MPDU-3895\n");
587 break;
588 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
589 p += scnprintf(p, bufsz + buf - p,
590 "\t\tMAX-MPDU-7991\n");
591 break;
592 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
593 p += scnprintf(p, bufsz + buf - p,
594 "\t\tMAX-MPDU-11454\n");
595 break;
596 default:
597 p += scnprintf(p, bufsz + buf - p,
598 "\t\tMAX-MPDU-UNKNOWN\n");
599 }
600 switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
601 case 0:
602 p += scnprintf(p, bufsz + buf - p,
603 "\t\t80Mhz\n");
604 break;
605 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
606 p += scnprintf(p, bufsz + buf - p,
607 "\t\t160Mhz\n");
608 break;
609 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
610 p += scnprintf(p, bufsz + buf - p,
611 "\t\t80+80Mhz\n");
612 break;
613 default:
614 p += scnprintf(p, bufsz + buf - p,
615 "\t\tUNKNOWN-MHZ: 0x%x\n",
616 (vhtc->cap >> 2) & 0x3);
617 }
618 PFLAG(RXLDPC, "RXLDPC");
619 PFLAG(SHORT_GI_80, "SHORT-GI-80");
620 PFLAG(SHORT_GI_160, "SHORT-GI-160");
621 PFLAG(TXSTBC, "TXSTBC");
622 p += scnprintf(p, bufsz + buf - p,
623 "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
624 PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
625 PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
626 p += scnprintf(p, bufsz + buf - p,
627 "\t\tBEAMFORMEE-STS: 0x%x\n",
628 (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
629 IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
630 p += scnprintf(p, bufsz + buf - p,
631 "\t\tSOUNDING-DIMENSIONS: 0x%x\n",
632 (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
633 >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
634 PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
635 PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
636 PFLAG(VHT_TXOP_PS, "TXOP-PS");
637 PFLAG(HTC_VHT, "HTC-VHT");
638 p += scnprintf(p, bufsz + buf - p,
639 "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
640 (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
641 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
642 PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
643 "LINK-ADAPTATION-VHT-UNSOL-MFB");
644 p += scnprintf(p, bufsz + buf - p,
645 "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
646 (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
647 PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
648 PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
649
650 p += scnprintf(p, bufsz + buf - p, "RX MCS: %.4x\n",
651 le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
652 if (vhtc->vht_mcs.rx_highest)
653 p += scnprintf(p, bufsz + buf - p,
654 "MCS RX highest: %d Mbps\n",
655 le16_to_cpu(vhtc->vht_mcs.rx_highest));
656 p += scnprintf(p, bufsz + buf - p, "TX MCS: %.4x\n",
657 le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
658 if (vhtc->vht_mcs.tx_highest)
659 p += scnprintf(p, bufsz + buf - p,
660 "MCS TX highest: %d Mbps\n",
661 le16_to_cpu(vhtc->vht_mcs.tx_highest));
662 #undef PFLAG
663 }
664
665 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
666 kfree(buf);
667 return ret;
668 }
669 LINK_STA_OPS(vht_capa);
670
link_sta_he_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)671 static ssize_t link_sta_he_capa_read(struct file *file, char __user *userbuf,
672 size_t count, loff_t *ppos)
673 {
674 char *buf, *p;
675 size_t buf_sz = PAGE_SIZE;
676 struct link_sta_info *link_sta = file->private_data;
677 struct ieee80211_sta_he_cap *hec = &link_sta->pub->he_cap;
678 struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp;
679 u8 ppe_size;
680 u8 *cap;
681 int i;
682 ssize_t ret;
683
684 buf = kmalloc(buf_sz, GFP_KERNEL);
685 if (!buf)
686 return -ENOMEM;
687 p = buf;
688
689 p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n",
690 hec->has_he ? "" : "not ");
691 if (!hec->has_he)
692 goto out;
693
694 cap = hec->he_cap_elem.mac_cap_info;
695 p += scnprintf(p, buf_sz + buf - p,
696 "MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
697 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]);
698
699 #define PRINT(fmt, ...) \
700 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \
701 ##__VA_ARGS__)
702
703 #define PFLAG(t, n, a, b) \
704 do { \
705 if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a) \
706 PRINT("%s", b); \
707 } while (0)
708
709 #define PFLAG_RANGE(t, i, n, s, m, off, fmt) \
710 do { \
711 u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK; \
712 u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off; \
713 PRINT(fmt, (s << idx) + (m * idx)); \
714 } while (0)
715
716 #define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b) \
717 do { \
718 if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) { \
719 PRINT("%s", b); \
720 break; \
721 } \
722 PFLAG_RANGE(t, i, n, s, m, off, fmt); \
723 } while (0)
724
725 PFLAG(MAC, 0, HTC_HE, "HTC-HE");
726 PFLAG(MAC, 0, TWT_REQ, "TWT-REQ");
727 PFLAG(MAC, 0, TWT_RES, "TWT-RES");
728 PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0,
729 "DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP");
730 PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0,
731 "MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED");
732
733 PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1,
734 "MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED");
735 PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0,
736 "TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN");
737 PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1,
738 "MULTI-TID-AGG-RX-QOS-%d");
739
740 if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) {
741 switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) {
742 case 0:
743 PRINT("LINK-ADAPTATION-NO-FEEDBACK");
744 break;
745 case 1:
746 PRINT("LINK-ADAPTATION-RESERVED");
747 break;
748 case 2:
749 PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK");
750 break;
751 case 3:
752 PRINT("LINK-ADAPTATION-BOTH");
753 break;
754 }
755 }
756
757 PFLAG(MAC, 2, ALL_ACK, "ALL-ACK");
758 PFLAG(MAC, 2, TRS, "TRS");
759 PFLAG(MAC, 2, BSR, "BSR");
760 PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT");
761 PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP");
762 PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING");
763 PFLAG(MAC, 2, ACK_EN, "ACK-EN");
764
765 PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL");
766 PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA");
767
768 switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) {
769 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_0:
770 PRINT("MAX-AMPDU-LEN-EXP-USE-EXT-0");
771 break;
772 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_1:
773 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-1");
774 break;
775 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_2:
776 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-2");
777 break;
778 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3:
779 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-3");
780 break;
781 }
782
783 PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG");
784 PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED");
785 PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS");
786
787 PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG");
788 PFLAG(MAC, 4, QTP, "QTP");
789 PFLAG(MAC, 4, BQR, "BQR");
790 PFLAG(MAC, 4, PSR_RESP, "PSR-RESP");
791 PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP");
792 PFLAG(MAC, 4, OPS, "OPS");
793 PFLAG(MAC, 4, AMSDU_IN_AMPDU, "AMSDU-IN-AMPDU");
794
795 PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7);
796
797 PFLAG(MAC, 5, SUBCHAN_SELECTIVE_TRANSMISSION,
798 "SUBCHAN-SELECTIVE-TRANSMISSION");
799 PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU");
800 PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX");
801 PFLAG(MAC, 5, HE_DYNAMIC_SM_PS, "HE-DYNAMIC-SM-PS");
802 PFLAG(MAC, 5, PUNCTURED_SOUNDING, "PUNCTURED-SOUNDING");
803 PFLAG(MAC, 5, HT_VHT_TRIG_FRAME_RX, "HT-VHT-TRIG-FRAME-RX");
804
805 cap = hec->he_cap_elem.phy_cap_info;
806 p += scnprintf(p, buf_sz + buf - p,
807 "PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
808 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6],
809 cap[7], cap[8], cap[9], cap[10]);
810
811 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G,
812 "CHANNEL-WIDTH-SET-40MHZ-IN-2G");
813 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G,
814 "CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G");
815 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G,
816 "CHANNEL-WIDTH-SET-160MHZ-IN-5G");
817 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
818 "CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G");
819 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G,
820 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G");
821 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G,
822 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G");
823
824 switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) {
825 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ:
826 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ");
827 break;
828 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ:
829 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ");
830 break;
831 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ:
832 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ");
833 break;
834 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ:
835 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ");
836 break;
837 }
838
839 PFLAG(PHY, 1, DEVICE_CLASS_A,
840 "IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A");
841 PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD,
842 "LDPC-CODING-IN-PAYLOAD");
843 PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US,
844 "HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US");
845 PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3);
846
847 PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US");
848 PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ");
849 PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ");
850 PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX");
851 PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX");
852 PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO");
853 PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO");
854
855 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) {
856 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM:
857 PRINT("DCM-MAX-CONST-TX-NO-DCM");
858 break;
859 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK:
860 PRINT("DCM-MAX-CONST-TX-BPSK");
861 break;
862 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK:
863 PRINT("DCM-MAX-CONST-TX-QPSK");
864 break;
865 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM:
866 PRINT("DCM-MAX-CONST-TX-16-QAM");
867 break;
868 }
869
870 PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1");
871 PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2");
872
873 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) {
874 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM:
875 PRINT("DCM-MAX-CONST-RX-NO-DCM");
876 break;
877 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK:
878 PRINT("DCM-MAX-CONST-RX-BPSK");
879 break;
880 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK:
881 PRINT("DCM-MAX-CONST-RX-QPSK");
882 break;
883 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM:
884 PRINT("DCM-MAX-CONST-RX-16-QAM");
885 break;
886 }
887
888 PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1");
889 PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2");
890 PFLAG(PHY, 3, RX_PARTIAL_BW_SU_IN_20MHZ_MU,
891 "RX-PARTIAL-BW-SU-IN-20MHZ-MU");
892 PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER");
893
894 PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE");
895 PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER");
896
897 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4,
898 "BEAMFORMEE-MAX-STS-UNDER-%d");
899 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4,
900 "BEAMFORMEE-MAX-STS-ABOVE-%d");
901
902 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1,
903 "NUM-SND-DIM-UNDER-80MHZ-%d");
904 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1,
905 "NUM-SND-DIM-ABOVE-80MHZ-%d");
906 PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK");
907 PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK");
908
909 PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU");
910 PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU");
911 PFLAG(PHY, 6, TRIG_SU_BEAMFORMING_FB, "TRIG-SU-BEAMFORMING-FB");
912 PFLAG(PHY, 6, TRIG_MU_BEAMFORMING_PARTIAL_BW_FB,
913 "MU-BEAMFORMING-PARTIAL-BW-FB");
914 PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB");
915 PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE");
916 PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO,
917 "PARTIAL-BANDWIDTH-DL-MUMIMO");
918 PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT");
919
920 PFLAG(PHY, 7, PSR_BASED_SR, "PSR-BASED-SR");
921 PFLAG(PHY, 7, POWER_BOOST_FACTOR_SUPP, "POWER-BOOST-FACTOR-SUPP");
922 PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI,
923 "HE-SU-MU-PPDU-4XLTF-AND-08-US-GI");
924 PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d");
925 PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ");
926 PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ");
927
928 PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI,
929 "HE-ER-SU-PPDU-4XLTF-AND-08-US-GI");
930 PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G,
931 "20MHZ-IN-40MHZ-HE-PPDU-IN-2G");
932 PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU");
933 PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU");
934 PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI,
935 "HE-ER-SU-1XLTF-AND-08-US-GI");
936 PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF,
937 "MIDAMBLE-RX-TX-2X-AND-1XLTF");
938
939 switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK) {
940 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242:
941 PRINT("DCM-MAX-RU-242");
942 break;
943 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484:
944 PRINT("DCM-MAX-RU-484");
945 break;
946 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996:
947 PRINT("DCM-MAX-RU-996");
948 break;
949 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996:
950 PRINT("DCM-MAX-RU-2x996");
951 break;
952 }
953
954 PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM,
955 "LONGER-THAN-16-SIGB-OFDM-SYM");
956 PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK,
957 "NON-TRIGGERED-CQI-FEEDBACK");
958 PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU,
959 "TX-1024-QAM-LESS-THAN-242-TONE-RU");
960 PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU,
961 "RX-1024-QAM-LESS-THAN-242-TONE-RU");
962 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB,
963 "RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB");
964 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB,
965 "RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB");
966
967 switch (u8_get_bits(cap[9],
968 IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK)) {
969 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US:
970 PRINT("NOMINAL-PACKET-PADDING-0US");
971 break;
972 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US:
973 PRINT("NOMINAL-PACKET-PADDING-8US");
974 break;
975 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US:
976 PRINT("NOMINAL-PACKET-PADDING-16US");
977 break;
978 }
979
980 #undef PFLAG_RANGE_DEFAULT
981 #undef PFLAG_RANGE
982 #undef PFLAG
983
984 #define PRINT_NSS_SUPP(f, n) \
985 do { \
986 int _i; \
987 u16 v = le16_to_cpu(nss->f); \
988 p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v); \
989 for (_i = 0; _i < 8; _i += 2) { \
990 switch ((v >> _i) & 0x3) { \
991 case 0: \
992 PRINT(n "-%d-SUPPORT-0-7", _i / 2); \
993 break; \
994 case 1: \
995 PRINT(n "-%d-SUPPORT-0-9", _i / 2); \
996 break; \
997 case 2: \
998 PRINT(n "-%d-SUPPORT-0-11", _i / 2); \
999 break; \
1000 case 3: \
1001 PRINT(n "-%d-NOT-SUPPORTED", _i / 2); \
1002 break; \
1003 } \
1004 } \
1005 } while (0)
1006
1007 PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80");
1008 PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80");
1009
1010 if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) {
1011 PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160");
1012 PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160");
1013 }
1014
1015 if (cap[0] &
1016 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
1017 PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80");
1018 PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80");
1019 }
1020
1021 #undef PRINT_NSS_SUPP
1022 #undef PRINT
1023
1024 if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT))
1025 goto out;
1026
1027 p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x",
1028 hec->ppe_thres[0]);
1029
1030 ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap);
1031 for (i = 1; i < ppe_size; i++) {
1032 p += scnprintf(p, buf_sz + buf - p, " %#.2x",
1033 hec->ppe_thres[i]);
1034 }
1035 p += scnprintf(p, buf_sz + buf - p, "\n");
1036
1037 out:
1038 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1039 kfree(buf);
1040 return ret;
1041 }
1042 LINK_STA_OPS(he_capa);
1043
link_sta_eht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)1044 static ssize_t link_sta_eht_capa_read(struct file *file, char __user *userbuf,
1045 size_t count, loff_t *ppos)
1046 {
1047 char *buf, *p;
1048 size_t buf_sz = PAGE_SIZE;
1049 struct link_sta_info *link_sta = file->private_data;
1050 struct ieee80211_sta_eht_cap *bec = &link_sta->pub->eht_cap;
1051 struct ieee80211_eht_cap_elem_fixed *fixed = &bec->eht_cap_elem;
1052 struct ieee80211_eht_mcs_nss_supp *nss = &bec->eht_mcs_nss_supp;
1053 u8 *cap;
1054 int i;
1055 ssize_t ret;
1056 static const char *mcs_desc[] = { "0-7", "8-9", "10-11", "12-13"};
1057
1058 buf = kmalloc(buf_sz, GFP_KERNEL);
1059 if (!buf)
1060 return -ENOMEM;
1061 p = buf;
1062
1063 p += scnprintf(p, buf_sz + buf - p, "EHT %ssupported\n",
1064 bec->has_eht ? "" : "not ");
1065 if (!bec->has_eht)
1066 goto out;
1067
1068 p += scnprintf(p, buf_sz + buf - p,
1069 "MAC-CAP: %#.2x %#.2x\n",
1070 fixed->mac_cap_info[0], fixed->mac_cap_info[1]);
1071 p += scnprintf(p, buf_sz + buf - p,
1072 "PHY-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
1073 fixed->phy_cap_info[0], fixed->phy_cap_info[1],
1074 fixed->phy_cap_info[2], fixed->phy_cap_info[3],
1075 fixed->phy_cap_info[4], fixed->phy_cap_info[5],
1076 fixed->phy_cap_info[6], fixed->phy_cap_info[7],
1077 fixed->phy_cap_info[8]);
1078
1079 #define PRINT(fmt, ...) \
1080 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \
1081 ##__VA_ARGS__)
1082
1083 #define PFLAG(t, n, a, b) \
1084 do { \
1085 if (cap[n] & IEEE80211_EHT_##t##_CAP##n##_##a) \
1086 PRINT("%s", b); \
1087 } while (0)
1088
1089 cap = fixed->mac_cap_info;
1090 PFLAG(MAC, 0, EPCS_PRIO_ACCESS, "EPCS-PRIO-ACCESS");
1091 PFLAG(MAC, 0, OM_CONTROL, "OM-CONTROL");
1092 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE1, "TRIG-TXOP-SHARING-MODE1");
1093 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE2, "TRIG-TXOP-SHARING-MODE2");
1094 PFLAG(MAC, 0, RESTRICTED_TWT, "RESTRICTED-TWT");
1095 PFLAG(MAC, 0, SCS_TRAFFIC_DESC, "SCS-TRAFFIC-DESC");
1096 switch ((cap[0] & 0xc0) >> 6) {
1097 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_3895:
1098 PRINT("MAX-MPDU-LEN: 3985");
1099 break;
1100 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991:
1101 PRINT("MAX-MPDU-LEN: 7991");
1102 break;
1103 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454:
1104 PRINT("MAX-MPDU-LEN: 11454");
1105 break;
1106 }
1107
1108 cap = fixed->phy_cap_info;
1109 PFLAG(PHY, 0, 320MHZ_IN_6GHZ, "320MHZ-IN-6GHZ");
1110 PFLAG(PHY, 0, 242_TONE_RU_GT20MHZ, "242-TONE-RU-GT20MHZ");
1111 PFLAG(PHY, 0, NDP_4_EHT_LFT_32_GI, "NDP-4-EHT-LFT-32-GI");
1112 PFLAG(PHY, 0, PARTIAL_BW_UL_MU_MIMO, "PARTIAL-BW-UL-MU-MIMO");
1113 PFLAG(PHY, 0, SU_BEAMFORMER, "SU-BEAMFORMER");
1114 PFLAG(PHY, 0, SU_BEAMFORMEE, "SU-BEAMFORMEE");
1115 i = cap[0] >> 7;
1116 i |= (cap[1] & 0x3) << 1;
1117 PRINT("BEAMFORMEE-80-NSS: %i", i);
1118 PRINT("BEAMFORMEE-160-NSS: %i", (cap[1] >> 2) & 0x7);
1119 PRINT("BEAMFORMEE-320-NSS: %i", (cap[1] >> 5) & 0x7);
1120 PRINT("SOUNDING-DIM-80-NSS: %i", (cap[2] & 0x7));
1121 PRINT("SOUNDING-DIM-160-NSS: %i", (cap[2] >> 3) & 0x7);
1122 i = cap[2] >> 6;
1123 i |= (cap[3] & 0x1) << 3;
1124 PRINT("SOUNDING-DIM-320-NSS: %i", i);
1125
1126 PFLAG(PHY, 3, NG_16_SU_FEEDBACK, "NG-16-SU-FEEDBACK");
1127 PFLAG(PHY, 3, NG_16_MU_FEEDBACK, "NG-16-MU-FEEDBACK");
1128 PFLAG(PHY, 3, CODEBOOK_4_2_SU_FDBK, "CODEBOOK-4-2-SU-FDBK");
1129 PFLAG(PHY, 3, CODEBOOK_7_5_MU_FDBK, "CODEBOOK-7-5-MU-FDBK");
1130 PFLAG(PHY, 3, TRIG_SU_BF_FDBK, "TRIG-SU-BF-FDBK");
1131 PFLAG(PHY, 3, TRIG_MU_BF_PART_BW_FDBK, "TRIG-MU-BF-PART-BW-FDBK");
1132 PFLAG(PHY, 3, TRIG_CQI_FDBK, "TRIG-CQI-FDBK");
1133
1134 PFLAG(PHY, 4, PART_BW_DL_MU_MIMO, "PART-BW-DL-MU-MIMO");
1135 PFLAG(PHY, 4, PSR_SR_SUPP, "PSR-SR-SUPP");
1136 PFLAG(PHY, 4, POWER_BOOST_FACT_SUPP, "POWER-BOOST-FACT-SUPP");
1137 PFLAG(PHY, 4, EHT_MU_PPDU_4_EHT_LTF_08_GI, "EHT-MU-PPDU-4-EHT-LTF-08-GI");
1138 PRINT("MAX_NC: %i", cap[4] >> 4);
1139
1140 PFLAG(PHY, 5, NON_TRIG_CQI_FEEDBACK, "NON-TRIG-CQI-FEEDBACK");
1141 PFLAG(PHY, 5, TX_LESS_242_TONE_RU_SUPP, "TX-LESS-242-TONE-RU-SUPP");
1142 PFLAG(PHY, 5, RX_LESS_242_TONE_RU_SUPP, "RX-LESS-242-TONE-RU-SUPP");
1143 PFLAG(PHY, 5, PPE_THRESHOLD_PRESENT, "PPE_THRESHOLD_PRESENT");
1144 switch (cap[5] >> 4 & 0x3) {
1145 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_0US:
1146 PRINT("NOMINAL_PKT_PAD: 0us");
1147 break;
1148 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_8US:
1149 PRINT("NOMINAL_PKT_PAD: 8us");
1150 break;
1151 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_16US:
1152 PRINT("NOMINAL_PKT_PAD: 16us");
1153 break;
1154 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_20US:
1155 PRINT("NOMINAL_PKT_PAD: 20us");
1156 break;
1157 }
1158 i = cap[5] >> 6;
1159 i |= cap[6] & 0x7;
1160 PRINT("MAX-NUM-SUPP-EHT-LTF: %i", i);
1161 PFLAG(PHY, 5, SUPP_EXTRA_EHT_LTF, "SUPP-EXTRA-EHT-LTF");
1162
1163 i = (cap[6] >> 3) & 0xf;
1164 PRINT("MCS15-SUPP-MASK: %i", i);
1165 PFLAG(PHY, 6, EHT_DUP_6GHZ_SUPP, "EHT-DUP-6GHZ-SUPP");
1166
1167 PFLAG(PHY, 7, 20MHZ_STA_RX_NDP_WIDER_BW, "20MHZ-STA-RX-NDP-WIDER-BW");
1168 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_80MHZ, "NON-OFDMA-UL-MU-MIMO-80MHZ");
1169 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_160MHZ, "NON-OFDMA-UL-MU-MIMO-160MHZ");
1170 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_320MHZ, "NON-OFDMA-UL-MU-MIMO-320MHZ");
1171 PFLAG(PHY, 7, MU_BEAMFORMER_80MHZ, "MU-BEAMFORMER-80MHZ");
1172 PFLAG(PHY, 7, MU_BEAMFORMER_160MHZ, "MU-BEAMFORMER-160MHZ");
1173 PFLAG(PHY, 7, MU_BEAMFORMER_320MHZ, "MU-BEAMFORMER-320MHZ");
1174 PFLAG(PHY, 7, TB_SOUNDING_FDBK_RATE_LIMIT, "TB-SOUNDING-FDBK-RATE-LIMIT");
1175
1176 PFLAG(PHY, 8, RX_1024QAM_WIDER_BW_DL_OFDMA, "RX-1024QAM-WIDER-BW-DL-OFDMA");
1177 PFLAG(PHY, 8, RX_4096QAM_WIDER_BW_DL_OFDMA, "RX-4096QAM-WIDER-BW-DL-OFDMA");
1178
1179 #undef PFLAG
1180
1181 PRINT(""); /* newline */
1182 if (!(link_sta->pub->he_cap.he_cap_elem.phy_cap_info[0] &
1183 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) {
1184 u8 *mcs_vals = (u8 *)(&nss->only_20mhz);
1185
1186 for (i = 0; i < 4; i++)
1187 PRINT("EHT bw=20 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1188 mcs_desc[i],
1189 mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1190 } else {
1191 u8 *mcs_vals = (u8 *)(&nss->bw._80);
1192
1193 for (i = 0; i < 3; i++)
1194 PRINT("EHT bw <= 80 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1195 mcs_desc[i + 1],
1196 mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1197
1198 mcs_vals = (u8 *)(&nss->bw._160);
1199 for (i = 0; i < 3; i++)
1200 PRINT("EHT bw <= 160 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._320);
1205 for (i = 0; i < 3; i++)
1206 PRINT("EHT bw <= 320 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
1211 if (cap[5] & IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) {
1212 u8 ppe_size = ieee80211_eht_ppe_size(bec->eht_ppe_thres[0], cap);
1213
1214 p += scnprintf(p, buf_sz + buf - p, "EHT PPE Thresholds: ");
1215 for (i = 0; i < ppe_size; i++)
1216 p += scnprintf(p, buf_sz + buf - p, "0x%02x ",
1217 bec->eht_ppe_thres[i]);
1218 PRINT(""); /* newline */
1219 }
1220
1221 out:
1222 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1223 kfree(buf);
1224 return ret;
1225 }
1226 LINK_STA_OPS(eht_capa);
1227
1228 #define DEBUGFS_ADD(name) \
1229 debugfs_create_file(#name, 0400, \
1230 sta->debugfs_dir, sta, &sta_ ##name## _ops)
1231
1232 #define DEBUGFS_ADD_COUNTER(name, field) \
1233 debugfs_create_ulong(#name, 0400, sta->debugfs_dir, &sta->field);
1234
ieee80211_sta_debugfs_add(struct sta_info * sta)1235 void ieee80211_sta_debugfs_add(struct sta_info *sta)
1236 {
1237 struct ieee80211_local *local = sta->local;
1238 struct ieee80211_sub_if_data *sdata = sta->sdata;
1239 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
1240 u8 mac[3*ETH_ALEN];
1241
1242 if (!stations_dir)
1243 return;
1244
1245 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
1246
1247 /*
1248 * This might fail due to a race condition:
1249 * When mac80211 unlinks a station, the debugfs entries
1250 * remain, but it is already possible to link a new
1251 * station with the same address which triggers adding
1252 * it to debugfs; therefore, if the old station isn't
1253 * destroyed quickly enough the old station's debugfs
1254 * dir might still be around.
1255 */
1256 sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
1257
1258 DEBUGFS_ADD(flags);
1259 DEBUGFS_ADD(aid);
1260 DEBUGFS_ADD(num_ps_buf_frames);
1261 DEBUGFS_ADD(last_seq_ctrl);
1262 DEBUGFS_ADD(agg_status);
1263 /* FIXME: Kept here as the statistics are only done on the deflink */
1264 DEBUGFS_ADD_COUNTER(tx_filtered, deflink.status_stats.filtered);
1265
1266 DEBUGFS_ADD(aqm);
1267 DEBUGFS_ADD(airtime);
1268
1269 if (wiphy_ext_feature_isset(local->hw.wiphy,
1270 NL80211_EXT_FEATURE_AQL))
1271 DEBUGFS_ADD(aql);
1272
1273 debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir,
1274 &sta->driver_buffered_tids);
1275
1276 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
1277 }
1278
ieee80211_sta_debugfs_remove(struct sta_info * sta)1279 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
1280 {
1281 debugfs_remove_recursive(sta->debugfs_dir);
1282 sta->debugfs_dir = NULL;
1283 }
1284
1285 #undef DEBUGFS_ADD
1286 #undef DEBUGFS_ADD_COUNTER
1287
1288 #define DEBUGFS_ADD(name) \
1289 debugfs_create_file(#name, 0400, \
1290 link_sta->debugfs_dir, link_sta, &link_sta_ ##name## _ops)
1291 #define DEBUGFS_ADD_COUNTER(name, field) \
1292 debugfs_create_ulong(#name, 0400, link_sta->debugfs_dir, &link_sta->field)
1293
ieee80211_link_sta_debugfs_add(struct link_sta_info * link_sta)1294 void ieee80211_link_sta_debugfs_add(struct link_sta_info *link_sta)
1295 {
1296 if (WARN_ON(!link_sta->sta->debugfs_dir))
1297 return;
1298
1299 /* For non-MLO, leave the files in the main directory. */
1300 if (link_sta->sta->sta.valid_links) {
1301 char link_dir_name[10];
1302
1303 snprintf(link_dir_name, sizeof(link_dir_name),
1304 "link-%d", link_sta->link_id);
1305
1306 link_sta->debugfs_dir =
1307 debugfs_create_dir(link_dir_name,
1308 link_sta->sta->debugfs_dir);
1309
1310 DEBUGFS_ADD(addr);
1311 } else {
1312 if (WARN_ON(link_sta != &link_sta->sta->deflink))
1313 return;
1314
1315 link_sta->debugfs_dir = link_sta->sta->debugfs_dir;
1316 }
1317
1318 DEBUGFS_ADD(ht_capa);
1319 DEBUGFS_ADD(vht_capa);
1320 DEBUGFS_ADD(he_capa);
1321 DEBUGFS_ADD(eht_capa);
1322
1323 DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
1324 DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
1325 }
1326
ieee80211_link_sta_debugfs_remove(struct link_sta_info * link_sta)1327 void ieee80211_link_sta_debugfs_remove(struct link_sta_info *link_sta)
1328 {
1329 if (!link_sta->debugfs_dir || !link_sta->sta->debugfs_dir) {
1330 link_sta->debugfs_dir = NULL;
1331 return;
1332 }
1333
1334 if (link_sta->debugfs_dir == link_sta->sta->debugfs_dir) {
1335 WARN_ON(link_sta != &link_sta->sta->deflink);
1336 link_sta->sta->debugfs_dir = NULL;
1337 return;
1338 }
1339
1340 debugfs_remove_recursive(link_sta->debugfs_dir);
1341 link_sta->debugfs_dir = NULL;
1342 }
1343
ieee80211_link_sta_debugfs_drv_add(struct link_sta_info * link_sta)1344 void ieee80211_link_sta_debugfs_drv_add(struct link_sta_info *link_sta)
1345 {
1346 if (WARN_ON(!link_sta->debugfs_dir))
1347 return;
1348
1349 drv_link_sta_add_debugfs(link_sta->sta->local, link_sta->sta->sdata,
1350 link_sta->pub, link_sta->debugfs_dir);
1351 }
1352
ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info * link_sta)1353 void ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info *link_sta)
1354 {
1355 if (!link_sta->debugfs_dir)
1356 return;
1357
1358 if (WARN_ON(link_sta->debugfs_dir == link_sta->sta->debugfs_dir))
1359 return;
1360
1361 /* Recreate the directory excluding the driver data */
1362 debugfs_remove_recursive(link_sta->debugfs_dir);
1363 link_sta->debugfs_dir = NULL;
1364
1365 ieee80211_link_sta_debugfs_add(link_sta);
1366 }
1367