1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2003-2005 Devicescape Software, Inc.
4 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright(c) 2016 Intel Deutschland GmbH
8 * Copyright (C) 2018 - 2023 Intel Corporation
9 */
10
11 #include <linux/debugfs.h>
12 #include <linux/ieee80211.h>
13 #include "ieee80211_i.h"
14 #include "debugfs.h"
15 #include "debugfs_sta.h"
16 #include "sta_info.h"
17 #include "driver-ops.h"
18
19 /* sta attributes */
20
21 #define STA_READ(name, field, format_string) \
22 static ssize_t sta_ ##name## _read(struct file *file, \
23 char __user *userbuf, \
24 size_t count, loff_t *ppos) \
25 { \
26 struct sta_info *sta = file->private_data; \
27 return mac80211_format_buffer(userbuf, count, ppos, \
28 format_string, sta->field); \
29 }
30 #define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
31
32 #define STA_OPS(name) \
33 static const struct debugfs_short_fops sta_ ##name## _ops = { \
34 .read = sta_##name##_read, \
35 .llseek = generic_file_llseek, \
36 }
37
38 #define STA_OPS_RW(name) \
39 static const struct debugfs_short_fops sta_ ##name## _ops = { \
40 .read = sta_##name##_read, \
41 .write = sta_##name##_write, \
42 .llseek = generic_file_llseek, \
43 }
44
45 #define STA_FILE(name, field, format) \
46 STA_READ_##format(name, field) \
47 STA_OPS(name)
48
49 STA_FILE(aid, sta.aid, D);
50
51 static const char * const sta_flag_names[] = {
52 #define FLAG(F) [WLAN_STA_##F] = #F
53 FLAG(AUTH),
54 FLAG(ASSOC),
55 FLAG(PS_STA),
56 FLAG(AUTHORIZED),
57 FLAG(SHORT_PREAMBLE),
58 FLAG(WDS),
59 FLAG(CLEAR_PS_FILT),
60 FLAG(MFP),
61 FLAG(BLOCK_BA),
62 FLAG(PS_DRIVER),
63 FLAG(PSPOLL),
64 FLAG(TDLS_PEER),
65 FLAG(TDLS_PEER_AUTH),
66 FLAG(TDLS_INITIATOR),
67 FLAG(TDLS_CHAN_SWITCH),
68 FLAG(TDLS_OFF_CHANNEL),
69 FLAG(TDLS_WIDER_BW),
70 FLAG(UAPSD),
71 FLAG(SP),
72 FLAG(4ADDR_EVENT),
73 FLAG(INSERTED),
74 FLAG(RATE_CONTROL),
75 FLAG(TOFFSET_KNOWN),
76 FLAG(MPSP_OWNER),
77 FLAG(MPSP_RECIPIENT),
78 FLAG(PS_DELIVER),
79 FLAG(USES_ENCRYPTION),
80 FLAG(DECAP_OFFLOAD),
81 #undef FLAG
82 };
83
sta_flags_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)84 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
85 size_t count, loff_t *ppos)
86 {
87 char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
88 char *end = buf + sizeof(buf) - 1;
89 struct sta_info *sta = file->private_data;
90 unsigned int flg;
91
92 BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);
93
94 for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
95 if (test_sta_flag(sta, flg))
96 pos += scnprintf(pos, end - pos, "%s\n",
97 sta_flag_names[flg]);
98 }
99
100 return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
101 }
102 STA_OPS(flags);
103
sta_num_ps_buf_frames_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)104 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
105 char __user *userbuf,
106 size_t count, loff_t *ppos)
107 {
108 struct sta_info *sta = file->private_data;
109 char buf[17*IEEE80211_NUM_ACS], *p = buf;
110 int ac;
111
112 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
113 p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
114 skb_queue_len(&sta->ps_tx_buf[ac]) +
115 skb_queue_len(&sta->tx_filtered[ac]));
116 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
117 }
118 STA_OPS(num_ps_buf_frames);
119
sta_last_seq_ctrl_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)120 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
121 size_t count, loff_t *ppos)
122 {
123 char buf[15*IEEE80211_NUM_TIDS], *p = buf;
124 int i;
125 struct sta_info *sta = file->private_data;
126 for (i = 0; i < IEEE80211_NUM_TIDS; i++)
127 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
128 le16_to_cpu(sta->last_seq_ctrl[i]));
129 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
130 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
131 }
132 STA_OPS(last_seq_ctrl);
133
134 #define AQM_TXQ_ENTRY_LEN 130
135
sta_aqm_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)136 static ssize_t sta_aqm_read(struct file *file, char __user *userbuf,
137 size_t count, loff_t *ppos)
138 {
139 struct sta_info *sta = file->private_data;
140 struct ieee80211_local *local = sta->local;
141 size_t bufsz = AQM_TXQ_ENTRY_LEN * (IEEE80211_NUM_TIDS + 2);
142 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
143 struct txq_info *txqi;
144 ssize_t rv;
145 int i;
146
147 if (!buf)
148 return -ENOMEM;
149
150 spin_lock_bh(&local->fq.lock);
151 rcu_read_lock();
152
153 p += scnprintf(p,
154 bufsz + buf - p,
155 "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");
156
157 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
158 if (!sta->sta.txq[i])
159 continue;
160 txqi = to_txq_info(sta->sta.txq[i]);
161 p += scnprintf(p, bufsz + buf - p,
162 "%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s%s)\n",
163 txqi->txq.tid,
164 txqi->txq.ac,
165 txqi->tin.backlog_bytes,
166 txqi->tin.backlog_packets,
167 txqi->tin.flows,
168 txqi->cstats.drop_count,
169 txqi->cstats.ecn_mark,
170 txqi->tin.overlimit,
171 txqi->tin.collisions,
172 txqi->tin.tx_bytes,
173 txqi->tin.tx_packets,
174 txqi->flags,
175 test_bit(IEEE80211_TXQ_STOP, &txqi->flags) ? "STOP" : "RUN",
176 test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags) ? " AMPDU" : "",
177 test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags) ? " NO-AMSDU" : "",
178 test_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ? " DIRTY" : "");
179 }
180
181 rcu_read_unlock();
182 spin_unlock_bh(&local->fq.lock);
183
184 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
185 kfree(buf);
186 return rv;
187 }
188 STA_OPS(aqm);
189
sta_airtime_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)190 static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
191 size_t count, loff_t *ppos)
192 {
193 struct sta_info *sta = file->private_data;
194 struct ieee80211_local *local = sta->sdata->local;
195 size_t bufsz = 400;
196 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
197 u64 rx_airtime = 0, tx_airtime = 0;
198 s32 deficit[IEEE80211_NUM_ACS];
199 ssize_t rv;
200 int ac;
201
202 if (!buf)
203 return -ENOMEM;
204
205 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
206 spin_lock_bh(&local->active_txq_lock[ac]);
207 rx_airtime += sta->airtime[ac].rx_airtime;
208 tx_airtime += sta->airtime[ac].tx_airtime;
209 deficit[ac] = sta->airtime[ac].deficit;
210 spin_unlock_bh(&local->active_txq_lock[ac]);
211 }
212
213 p += scnprintf(p, bufsz + buf - p,
214 "RX: %llu us\nTX: %llu us\nWeight: %u\n"
215 "Deficit: VO: %d us VI: %d us BE: %d us BK: %d us\n",
216 rx_airtime, tx_airtime, sta->airtime_weight,
217 deficit[0], deficit[1], deficit[2], deficit[3]);
218
219 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
220 kfree(buf);
221 return rv;
222 }
223
sta_airtime_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)224 static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
225 size_t count, loff_t *ppos)
226 {
227 struct sta_info *sta = file->private_data;
228 struct ieee80211_local *local = sta->sdata->local;
229 int ac;
230
231 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
232 spin_lock_bh(&local->active_txq_lock[ac]);
233 sta->airtime[ac].rx_airtime = 0;
234 sta->airtime[ac].tx_airtime = 0;
235 sta->airtime[ac].deficit = sta->airtime_weight;
236 spin_unlock_bh(&local->active_txq_lock[ac]);
237 }
238
239 return count;
240 }
241 STA_OPS_RW(airtime);
242
sta_aql_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)243 static ssize_t sta_aql_read(struct file *file, char __user *userbuf,
244 size_t count, loff_t *ppos)
245 {
246 struct sta_info *sta = file->private_data;
247 struct ieee80211_local *local = sta->sdata->local;
248 size_t bufsz = 400;
249 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
250 u32 q_depth[IEEE80211_NUM_ACS];
251 u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS];
252 ssize_t rv;
253 int ac;
254
255 if (!buf)
256 return -ENOMEM;
257
258 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
259 spin_lock_bh(&local->active_txq_lock[ac]);
260 q_limit_l[ac] = sta->airtime[ac].aql_limit_low;
261 q_limit_h[ac] = sta->airtime[ac].aql_limit_high;
262 spin_unlock_bh(&local->active_txq_lock[ac]);
263 q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending);
264 }
265
266 p += scnprintf(p, bufsz + buf - p,
267 "Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n"
268 "Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n",
269 q_depth[0], q_depth[1], q_depth[2], q_depth[3],
270 q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1],
271 q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]);
272
273 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
274 kfree(buf);
275 return rv;
276 }
277
sta_aql_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)278 static ssize_t sta_aql_write(struct file *file, const char __user *userbuf,
279 size_t count, loff_t *ppos)
280 {
281 struct sta_info *sta = file->private_data;
282 u32 ac, q_limit_l, q_limit_h;
283 char _buf[100] = {}, *buf = _buf;
284
285 if (count > sizeof(_buf))
286 return -EINVAL;
287
288 if (copy_from_user(buf, userbuf, count))
289 return -EFAULT;
290
291 buf[sizeof(_buf) - 1] = '\0';
292 if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h)
293 != 3)
294 return -EINVAL;
295
296 if (ac >= IEEE80211_NUM_ACS)
297 return -EINVAL;
298
299 sta->airtime[ac].aql_limit_low = q_limit_l;
300 sta->airtime[ac].aql_limit_high = q_limit_h;
301
302 return count;
303 }
304 STA_OPS_RW(aql);
305
306
sta_agg_status_do_read(struct wiphy * wiphy,struct file * file,char * buf,size_t bufsz,void * data)307 static ssize_t sta_agg_status_do_read(struct wiphy *wiphy, struct file *file,
308 char *buf, size_t bufsz, void *data)
309 {
310 struct sta_info *sta = data;
311 char *p = buf;
312 int i;
313 struct tid_ampdu_rx *tid_rx;
314 struct tid_ampdu_tx *tid_tx;
315
316 p += scnprintf(p, bufsz + buf - p, "next dialog_token: %#02x\n",
317 sta->ampdu_mlme.dialog_token_allocator + 1);
318 p += scnprintf(p, bufsz + buf - p,
319 "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
320
321 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
322 bool tid_rx_valid;
323
324 tid_rx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_rx[i]);
325 tid_tx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_tx[i]);
326 tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);
327
328 p += scnprintf(p, bufsz + buf - p, "%02d", i);
329 p += scnprintf(p, bufsz + buf - p, "\t\t%x",
330 tid_rx_valid);
331 p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
332 tid_rx_valid ?
333 sta->ampdu_mlme.tid_rx_token[i] : 0);
334 p += scnprintf(p, bufsz + buf - p, "\t%#.3x",
335 tid_rx ? tid_rx->ssn : 0);
336
337 p += scnprintf(p, bufsz + buf - p, "\t\t%x", !!tid_tx);
338 p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
339 tid_tx ? tid_tx->dialog_token : 0);
340 p += scnprintf(p, bufsz + buf - p, "\t%03d",
341 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
342 p += scnprintf(p, bufsz + buf - p, "\n");
343 }
344
345 return p - buf;
346 }
347
sta_agg_status_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)348 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
349 size_t count, loff_t *ppos)
350 {
351 struct sta_info *sta = file->private_data;
352 struct wiphy *wiphy = sta->local->hw.wiphy;
353 size_t bufsz = 71 + IEEE80211_NUM_TIDS * 40;
354 char *buf = kmalloc(bufsz, GFP_KERNEL);
355 ssize_t ret;
356
357 if (!buf)
358 return -ENOMEM;
359
360 ret = wiphy_locked_debugfs_read(wiphy, file, buf, bufsz,
361 userbuf, count, ppos,
362 sta_agg_status_do_read, sta);
363 kfree(buf);
364
365 return ret;
366 }
367
sta_agg_status_do_write(struct wiphy * wiphy,struct file * file,char * buf,size_t count,void * data)368 static ssize_t sta_agg_status_do_write(struct wiphy *wiphy, struct file *file,
369 char *buf, size_t count, void *data)
370 {
371 struct sta_info *sta = data;
372 bool start, tx;
373 unsigned long tid;
374 char *pos = buf;
375 int ret, timeout = 5000;
376
377 buf = strsep(&pos, " ");
378 if (!buf)
379 return -EINVAL;
380
381 if (!strcmp(buf, "tx"))
382 tx = true;
383 else if (!strcmp(buf, "rx"))
384 tx = false;
385 else
386 return -EINVAL;
387
388 buf = strsep(&pos, " ");
389 if (!buf)
390 return -EINVAL;
391 if (!strcmp(buf, "start")) {
392 start = true;
393 if (!tx)
394 return -EINVAL;
395 } else if (!strcmp(buf, "stop")) {
396 start = false;
397 } else {
398 return -EINVAL;
399 }
400
401 buf = strsep(&pos, " ");
402 if (!buf)
403 return -EINVAL;
404 if (sscanf(buf, "timeout=%d", &timeout) == 1) {
405 buf = strsep(&pos, " ");
406 if (!buf || !tx || !start)
407 return -EINVAL;
408 }
409
410 ret = kstrtoul(buf, 0, &tid);
411 if (ret || tid >= IEEE80211_NUM_TIDS)
412 return -EINVAL;
413
414 if (tx) {
415 if (start)
416 ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
417 timeout);
418 else
419 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
420 } else {
421 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
422 3, true);
423 ret = 0;
424 }
425
426 return ret ?: count;
427 }
428
sta_agg_status_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)429 static ssize_t sta_agg_status_write(struct file *file,
430 const char __user *userbuf,
431 size_t count, loff_t *ppos)
432 {
433 struct sta_info *sta = file->private_data;
434 struct wiphy *wiphy = sta->local->hw.wiphy;
435 char _buf[26];
436
437 return wiphy_locked_debugfs_write(wiphy, file, _buf, sizeof(_buf),
438 userbuf, count,
439 sta_agg_status_do_write, sta);
440 }
441 STA_OPS_RW(agg_status);
442
443 /* link sta attributes */
444 #define LINK_STA_OPS(name) \
445 static const struct debugfs_short_fops link_sta_ ##name## _ops = { \
446 .read = link_sta_##name##_read, \
447 .llseek = generic_file_llseek, \
448 }
449
link_sta_addr_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)450 static ssize_t link_sta_addr_read(struct file *file, char __user *userbuf,
451 size_t count, loff_t *ppos)
452 {
453 struct link_sta_info *link_sta = file->private_data;
454 u8 mac[MAC_ADDR_STR_LEN + 2];
455
456 snprintf(mac, sizeof(mac), "%pM\n", link_sta->pub->addr);
457
458 return simple_read_from_buffer(userbuf, count, ppos, mac,
459 MAC_ADDR_STR_LEN + 1);
460 }
461
462 LINK_STA_OPS(addr);
463
link_sta_ht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)464 static ssize_t link_sta_ht_capa_read(struct file *file, char __user *userbuf,
465 size_t count, loff_t *ppos)
466 {
467 #define PRINT_HT_CAP(_cond, _str) \
468 do { \
469 if (_cond) \
470 p += scnprintf(p, bufsz + buf - p, "\t" _str "\n"); \
471 } while (0)
472 char *buf, *p;
473 int i;
474 ssize_t bufsz = 512;
475 struct link_sta_info *link_sta = file->private_data;
476 struct ieee80211_sta_ht_cap *htc = &link_sta->pub->ht_cap;
477 ssize_t ret;
478
479 buf = kzalloc(bufsz, GFP_KERNEL);
480 if (!buf)
481 return -ENOMEM;
482 p = buf;
483
484 p += scnprintf(p, bufsz + buf - p, "ht %ssupported\n",
485 htc->ht_supported ? "" : "not ");
486 if (htc->ht_supported) {
487 p += scnprintf(p, bufsz + buf - p, "cap: %#.4x\n", htc->cap);
488
489 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
490 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
491 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
492
493 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
494 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
495 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
496
497 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
498 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
499 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
500 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
501
502 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
503 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
504 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
505 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
506
507 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
508
509 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
510 "3839 bytes");
511 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
512 "7935 bytes");
513
514 /*
515 * For beacons and probe response this would mean the BSS
516 * does or does not allow the usage of DSSS/CCK HT40.
517 * Otherwise it means the STA does or does not use
518 * DSSS/CCK HT40.
519 */
520 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
521 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
522
523 /* BIT(13) is reserved */
524
525 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
526
527 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
528
529 p += scnprintf(p, bufsz + buf - p, "ampdu factor/density: %d/%d\n",
530 htc->ampdu_factor, htc->ampdu_density);
531 p += scnprintf(p, bufsz + buf - p, "MCS mask:");
532
533 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
534 p += scnprintf(p, bufsz + buf - p, " %.2x",
535 htc->mcs.rx_mask[i]);
536 p += scnprintf(p, bufsz + buf - p, "\n");
537
538 /* If not set this is meaningless */
539 if (le16_to_cpu(htc->mcs.rx_highest)) {
540 p += scnprintf(p, bufsz + buf - p,
541 "MCS rx highest: %d Mbps\n",
542 le16_to_cpu(htc->mcs.rx_highest));
543 }
544
545 p += scnprintf(p, bufsz + buf - p, "MCS tx params: %x\n",
546 htc->mcs.tx_params);
547 }
548
549 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
550 kfree(buf);
551 return ret;
552 }
553 LINK_STA_OPS(ht_capa);
554
link_sta_vht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)555 static ssize_t link_sta_vht_capa_read(struct file *file, char __user *userbuf,
556 size_t count, loff_t *ppos)
557 {
558 char *buf, *p;
559 struct link_sta_info *link_sta = file->private_data;
560 struct ieee80211_sta_vht_cap *vhtc = &link_sta->pub->vht_cap;
561 ssize_t ret;
562 ssize_t bufsz = 512;
563
564 buf = kzalloc(bufsz, GFP_KERNEL);
565 if (!buf)
566 return -ENOMEM;
567 p = buf;
568
569 p += scnprintf(p, bufsz + buf - p, "VHT %ssupported\n",
570 vhtc->vht_supported ? "" : "not ");
571 if (vhtc->vht_supported) {
572 p += scnprintf(p, bufsz + buf - p, "cap: %#.8x\n",
573 vhtc->cap);
574 #define PFLAG(a, b) \
575 do { \
576 if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \
577 p += scnprintf(p, bufsz + buf - p, \
578 "\t\t%s\n", b); \
579 } while (0)
580
581 switch (vhtc->cap & 0x3) {
582 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
583 p += scnprintf(p, bufsz + buf - p,
584 "\t\tMAX-MPDU-3895\n");
585 break;
586 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
587 p += scnprintf(p, bufsz + buf - p,
588 "\t\tMAX-MPDU-7991\n");
589 break;
590 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
591 p += scnprintf(p, bufsz + buf - p,
592 "\t\tMAX-MPDU-11454\n");
593 break;
594 default:
595 p += scnprintf(p, bufsz + buf - p,
596 "\t\tMAX-MPDU-UNKNOWN\n");
597 }
598 switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
599 case 0:
600 p += scnprintf(p, bufsz + buf - p,
601 "\t\t80Mhz\n");
602 break;
603 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
604 p += scnprintf(p, bufsz + buf - p,
605 "\t\t160Mhz\n");
606 break;
607 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
608 p += scnprintf(p, bufsz + buf - p,
609 "\t\t80+80Mhz\n");
610 break;
611 default:
612 p += scnprintf(p, bufsz + buf - p,
613 "\t\tUNKNOWN-MHZ: 0x%x\n",
614 (vhtc->cap >> 2) & 0x3);
615 }
616 PFLAG(RXLDPC, "RXLDPC");
617 PFLAG(SHORT_GI_80, "SHORT-GI-80");
618 PFLAG(SHORT_GI_160, "SHORT-GI-160");
619 PFLAG(TXSTBC, "TXSTBC");
620 p += scnprintf(p, bufsz + buf - p,
621 "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
622 PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
623 PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
624 p += scnprintf(p, bufsz + buf - p,
625 "\t\tBEAMFORMEE-STS: 0x%x\n",
626 (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
627 IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
628 p += scnprintf(p, bufsz + buf - p,
629 "\t\tSOUNDING-DIMENSIONS: 0x%x\n",
630 (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
631 >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
632 PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
633 PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
634 PFLAG(VHT_TXOP_PS, "TXOP-PS");
635 PFLAG(HTC_VHT, "HTC-VHT");
636 p += scnprintf(p, bufsz + buf - p,
637 "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
638 (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
639 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
640 PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
641 "LINK-ADAPTATION-VHT-UNSOL-MFB");
642 p += scnprintf(p, bufsz + buf - p,
643 "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
644 (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
645 PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
646 PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
647
648 p += scnprintf(p, bufsz + buf - p, "RX MCS: %.4x\n",
649 le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
650 if (vhtc->vht_mcs.rx_highest)
651 p += scnprintf(p, bufsz + buf - p,
652 "MCS RX highest: %d Mbps\n",
653 le16_to_cpu(vhtc->vht_mcs.rx_highest));
654 p += scnprintf(p, bufsz + buf - p, "TX MCS: %.4x\n",
655 le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
656 if (vhtc->vht_mcs.tx_highest)
657 p += scnprintf(p, bufsz + buf - p,
658 "MCS TX highest: %d Mbps\n",
659 le16_to_cpu(vhtc->vht_mcs.tx_highest));
660 #undef PFLAG
661 }
662
663 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
664 kfree(buf);
665 return ret;
666 }
667 LINK_STA_OPS(vht_capa);
668
link_sta_he_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)669 static ssize_t link_sta_he_capa_read(struct file *file, char __user *userbuf,
670 size_t count, loff_t *ppos)
671 {
672 char *buf, *p;
673 size_t buf_sz = PAGE_SIZE;
674 struct link_sta_info *link_sta = file->private_data;
675 struct ieee80211_sta_he_cap *hec = &link_sta->pub->he_cap;
676 struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp;
677 u8 ppe_size;
678 u8 *cap;
679 int i;
680 ssize_t ret;
681
682 buf = kmalloc(buf_sz, GFP_KERNEL);
683 if (!buf)
684 return -ENOMEM;
685 p = buf;
686
687 p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n",
688 hec->has_he ? "" : "not ");
689 if (!hec->has_he)
690 goto out;
691
692 cap = hec->he_cap_elem.mac_cap_info;
693 p += scnprintf(p, buf_sz + buf - p,
694 "MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
695 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]);
696
697 #define PRINT(fmt, ...) \
698 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \
699 ##__VA_ARGS__)
700
701 #define PFLAG(t, n, a, b) \
702 do { \
703 if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a) \
704 PRINT("%s", b); \
705 } while (0)
706
707 #define PFLAG_RANGE(t, i, n, s, m, off, fmt) \
708 do { \
709 u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK; \
710 u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off; \
711 PRINT(fmt, (s << idx) + (m * idx)); \
712 } while (0)
713
714 #define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b) \
715 do { \
716 if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) { \
717 PRINT("%s", b); \
718 break; \
719 } \
720 PFLAG_RANGE(t, i, n, s, m, off, fmt); \
721 } while (0)
722
723 PFLAG(MAC, 0, HTC_HE, "HTC-HE");
724 PFLAG(MAC, 0, TWT_REQ, "TWT-REQ");
725 PFLAG(MAC, 0, TWT_RES, "TWT-RES");
726 PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0,
727 "DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP");
728 PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0,
729 "MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED");
730
731 PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1,
732 "MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED");
733 PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0,
734 "TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN");
735 PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1,
736 "MULTI-TID-AGG-RX-QOS-%d");
737
738 if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) {
739 switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) {
740 case 0:
741 PRINT("LINK-ADAPTATION-NO-FEEDBACK");
742 break;
743 case 1:
744 PRINT("LINK-ADAPTATION-RESERVED");
745 break;
746 case 2:
747 PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK");
748 break;
749 case 3:
750 PRINT("LINK-ADAPTATION-BOTH");
751 break;
752 }
753 }
754
755 PFLAG(MAC, 2, ALL_ACK, "ALL-ACK");
756 PFLAG(MAC, 2, TRS, "TRS");
757 PFLAG(MAC, 2, BSR, "BSR");
758 PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT");
759 PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP");
760 PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING");
761 PFLAG(MAC, 2, ACK_EN, "ACK-EN");
762
763 PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL");
764 PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA");
765
766 switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) {
767 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_0:
768 PRINT("MAX-AMPDU-LEN-EXP-USE-EXT-0");
769 break;
770 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_1:
771 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-1");
772 break;
773 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_2:
774 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-2");
775 break;
776 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3:
777 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-3");
778 break;
779 }
780
781 PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG");
782 PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED");
783 PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS");
784
785 PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG");
786 PFLAG(MAC, 4, QTP, "QTP");
787 PFLAG(MAC, 4, BQR, "BQR");
788 PFLAG(MAC, 4, PSR_RESP, "PSR-RESP");
789 PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP");
790 PFLAG(MAC, 4, OPS, "OPS");
791 PFLAG(MAC, 4, AMSDU_IN_AMPDU, "AMSDU-IN-AMPDU");
792
793 PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7);
794
795 PFLAG(MAC, 5, SUBCHAN_SELECTIVE_TRANSMISSION,
796 "SUBCHAN-SELECTIVE-TRANSMISSION");
797 PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU");
798 PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX");
799 PFLAG(MAC, 5, HE_DYNAMIC_SM_PS, "HE-DYNAMIC-SM-PS");
800 PFLAG(MAC, 5, PUNCTURED_SOUNDING, "PUNCTURED-SOUNDING");
801 PFLAG(MAC, 5, HT_VHT_TRIG_FRAME_RX, "HT-VHT-TRIG-FRAME-RX");
802
803 cap = hec->he_cap_elem.phy_cap_info;
804 p += scnprintf(p, buf_sz + buf - p,
805 "PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
806 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6],
807 cap[7], cap[8], cap[9], cap[10]);
808
809 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G,
810 "CHANNEL-WIDTH-SET-40MHZ-IN-2G");
811 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G,
812 "CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G");
813 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G,
814 "CHANNEL-WIDTH-SET-160MHZ-IN-5G");
815 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
816 "CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G");
817 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G,
818 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G");
819 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G,
820 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G");
821
822 switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) {
823 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ:
824 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ");
825 break;
826 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ:
827 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ");
828 break;
829 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ:
830 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ");
831 break;
832 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ:
833 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ");
834 break;
835 }
836
837 PFLAG(PHY, 1, DEVICE_CLASS_A,
838 "IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A");
839 PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD,
840 "LDPC-CODING-IN-PAYLOAD");
841 PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US,
842 "HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US");
843 PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3);
844
845 PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US");
846 PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ");
847 PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ");
848 PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX");
849 PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX");
850 PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO");
851 PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO");
852
853 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) {
854 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM:
855 PRINT("DCM-MAX-CONST-TX-NO-DCM");
856 break;
857 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK:
858 PRINT("DCM-MAX-CONST-TX-BPSK");
859 break;
860 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK:
861 PRINT("DCM-MAX-CONST-TX-QPSK");
862 break;
863 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM:
864 PRINT("DCM-MAX-CONST-TX-16-QAM");
865 break;
866 }
867
868 PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1");
869 PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2");
870
871 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) {
872 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM:
873 PRINT("DCM-MAX-CONST-RX-NO-DCM");
874 break;
875 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK:
876 PRINT("DCM-MAX-CONST-RX-BPSK");
877 break;
878 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK:
879 PRINT("DCM-MAX-CONST-RX-QPSK");
880 break;
881 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM:
882 PRINT("DCM-MAX-CONST-RX-16-QAM");
883 break;
884 }
885
886 PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1");
887 PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2");
888 PFLAG(PHY, 3, RX_PARTIAL_BW_SU_IN_20MHZ_MU,
889 "RX-PARTIAL-BW-SU-IN-20MHZ-MU");
890 PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER");
891
892 PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE");
893 PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER");
894
895 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4,
896 "BEAMFORMEE-MAX-STS-UNDER-%d");
897 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4,
898 "BEAMFORMEE-MAX-STS-ABOVE-%d");
899
900 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1,
901 "NUM-SND-DIM-UNDER-80MHZ-%d");
902 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1,
903 "NUM-SND-DIM-ABOVE-80MHZ-%d");
904 PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK");
905 PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK");
906
907 PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU");
908 PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU");
909 PFLAG(PHY, 6, TRIG_SU_BEAMFORMING_FB, "TRIG-SU-BEAMFORMING-FB");
910 PFLAG(PHY, 6, TRIG_MU_BEAMFORMING_PARTIAL_BW_FB,
911 "MU-BEAMFORMING-PARTIAL-BW-FB");
912 PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB");
913 PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE");
914 PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO,
915 "PARTIAL-BANDWIDTH-DL-MUMIMO");
916 PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT");
917
918 PFLAG(PHY, 7, PSR_BASED_SR, "PSR-BASED-SR");
919 PFLAG(PHY, 7, POWER_BOOST_FACTOR_SUPP, "POWER-BOOST-FACTOR-SUPP");
920 PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI,
921 "HE-SU-MU-PPDU-4XLTF-AND-08-US-GI");
922 PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d");
923 PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ");
924 PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ");
925
926 PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI,
927 "HE-ER-SU-PPDU-4XLTF-AND-08-US-GI");
928 PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G,
929 "20MHZ-IN-40MHZ-HE-PPDU-IN-2G");
930 PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU");
931 PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU");
932 PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI,
933 "HE-ER-SU-1XLTF-AND-08-US-GI");
934 PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF,
935 "MIDAMBLE-RX-TX-2X-AND-1XLTF");
936
937 switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK) {
938 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242:
939 PRINT("DCM-MAX-RU-242");
940 break;
941 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484:
942 PRINT("DCM-MAX-RU-484");
943 break;
944 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996:
945 PRINT("DCM-MAX-RU-996");
946 break;
947 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996:
948 PRINT("DCM-MAX-RU-2x996");
949 break;
950 }
951
952 PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM,
953 "LONGER-THAN-16-SIGB-OFDM-SYM");
954 PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK,
955 "NON-TRIGGERED-CQI-FEEDBACK");
956 PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU,
957 "TX-1024-QAM-LESS-THAN-242-TONE-RU");
958 PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU,
959 "RX-1024-QAM-LESS-THAN-242-TONE-RU");
960 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB,
961 "RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB");
962 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB,
963 "RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB");
964
965 switch (u8_get_bits(cap[9],
966 IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK)) {
967 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US:
968 PRINT("NOMINAL-PACKET-PADDING-0US");
969 break;
970 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US:
971 PRINT("NOMINAL-PACKET-PADDING-8US");
972 break;
973 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US:
974 PRINT("NOMINAL-PACKET-PADDING-16US");
975 break;
976 }
977
978 #undef PFLAG_RANGE_DEFAULT
979 #undef PFLAG_RANGE
980 #undef PFLAG
981
982 #define PRINT_NSS_SUPP(f, n) \
983 do { \
984 int _i; \
985 u16 v = le16_to_cpu(nss->f); \
986 p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v); \
987 for (_i = 0; _i < 8; _i += 2) { \
988 switch ((v >> _i) & 0x3) { \
989 case 0: \
990 PRINT(n "-%d-SUPPORT-0-7", _i / 2); \
991 break; \
992 case 1: \
993 PRINT(n "-%d-SUPPORT-0-9", _i / 2); \
994 break; \
995 case 2: \
996 PRINT(n "-%d-SUPPORT-0-11", _i / 2); \
997 break; \
998 case 3: \
999 PRINT(n "-%d-NOT-SUPPORTED", _i / 2); \
1000 break; \
1001 } \
1002 } \
1003 } while (0)
1004
1005 PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80");
1006 PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80");
1007
1008 if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) {
1009 PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160");
1010 PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160");
1011 }
1012
1013 if (cap[0] &
1014 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
1015 PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80");
1016 PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80");
1017 }
1018
1019 #undef PRINT_NSS_SUPP
1020 #undef PRINT
1021
1022 if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT))
1023 goto out;
1024
1025 p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x",
1026 hec->ppe_thres[0]);
1027
1028 ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap);
1029 for (i = 1; i < ppe_size; i++) {
1030 p += scnprintf(p, buf_sz + buf - p, " %#.2x",
1031 hec->ppe_thres[i]);
1032 }
1033 p += scnprintf(p, buf_sz + buf - p, "\n");
1034
1035 out:
1036 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1037 kfree(buf);
1038 return ret;
1039 }
1040 LINK_STA_OPS(he_capa);
1041
link_sta_eht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)1042 static ssize_t link_sta_eht_capa_read(struct file *file, char __user *userbuf,
1043 size_t count, loff_t *ppos)
1044 {
1045 char *buf, *p;
1046 size_t buf_sz = PAGE_SIZE;
1047 struct link_sta_info *link_sta = file->private_data;
1048 struct ieee80211_sta_eht_cap *bec = &link_sta->pub->eht_cap;
1049 struct ieee80211_eht_cap_elem_fixed *fixed = &bec->eht_cap_elem;
1050 struct ieee80211_eht_mcs_nss_supp *nss = &bec->eht_mcs_nss_supp;
1051 u8 *cap;
1052 int i;
1053 ssize_t ret;
1054 static const char *mcs_desc[] = { "0-7", "8-9", "10-11", "12-13"};
1055
1056 buf = kmalloc(buf_sz, GFP_KERNEL);
1057 if (!buf)
1058 return -ENOMEM;
1059 p = buf;
1060
1061 p += scnprintf(p, buf_sz + buf - p, "EHT %ssupported\n",
1062 bec->has_eht ? "" : "not ");
1063 if (!bec->has_eht)
1064 goto out;
1065
1066 p += scnprintf(p, buf_sz + buf - p,
1067 "MAC-CAP: %#.2x %#.2x\n",
1068 fixed->mac_cap_info[0], fixed->mac_cap_info[1]);
1069 p += scnprintf(p, buf_sz + buf - p,
1070 "PHY-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
1071 fixed->phy_cap_info[0], fixed->phy_cap_info[1],
1072 fixed->phy_cap_info[2], fixed->phy_cap_info[3],
1073 fixed->phy_cap_info[4], fixed->phy_cap_info[5],
1074 fixed->phy_cap_info[6], fixed->phy_cap_info[7],
1075 fixed->phy_cap_info[8]);
1076
1077 #define PRINT(fmt, ...) \
1078 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \
1079 ##__VA_ARGS__)
1080
1081 #define PFLAG(t, n, a, b) \
1082 do { \
1083 if (cap[n] & IEEE80211_EHT_##t##_CAP##n##_##a) \
1084 PRINT("%s", b); \
1085 } while (0)
1086
1087 cap = fixed->mac_cap_info;
1088 PFLAG(MAC, 0, EPCS_PRIO_ACCESS, "EPCS-PRIO-ACCESS");
1089 PFLAG(MAC, 0, OM_CONTROL, "OM-CONTROL");
1090 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE1, "TRIG-TXOP-SHARING-MODE1");
1091 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE2, "TRIG-TXOP-SHARING-MODE2");
1092 PFLAG(MAC, 0, RESTRICTED_TWT, "RESTRICTED-TWT");
1093 PFLAG(MAC, 0, SCS_TRAFFIC_DESC, "SCS-TRAFFIC-DESC");
1094 switch ((cap[0] & 0xc0) >> 6) {
1095 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_3895:
1096 PRINT("MAX-MPDU-LEN: 3985");
1097 break;
1098 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991:
1099 PRINT("MAX-MPDU-LEN: 7991");
1100 break;
1101 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454:
1102 PRINT("MAX-MPDU-LEN: 11454");
1103 break;
1104 }
1105
1106 cap = fixed->phy_cap_info;
1107 PFLAG(PHY, 0, 320MHZ_IN_6GHZ, "320MHZ-IN-6GHZ");
1108 PFLAG(PHY, 0, 242_TONE_RU_GT20MHZ, "242-TONE-RU-GT20MHZ");
1109 PFLAG(PHY, 0, NDP_4_EHT_LFT_32_GI, "NDP-4-EHT-LFT-32-GI");
1110 PFLAG(PHY, 0, PARTIAL_BW_UL_MU_MIMO, "PARTIAL-BW-UL-MU-MIMO");
1111 PFLAG(PHY, 0, SU_BEAMFORMER, "SU-BEAMFORMER");
1112 PFLAG(PHY, 0, SU_BEAMFORMEE, "SU-BEAMFORMEE");
1113 i = cap[0] >> 7;
1114 i |= (cap[1] & 0x3) << 1;
1115 PRINT("BEAMFORMEE-80-NSS: %i", i);
1116 PRINT("BEAMFORMEE-160-NSS: %i", (cap[1] >> 2) & 0x7);
1117 PRINT("BEAMFORMEE-320-NSS: %i", (cap[1] >> 5) & 0x7);
1118 PRINT("SOUNDING-DIM-80-NSS: %i", (cap[2] & 0x7));
1119 PRINT("SOUNDING-DIM-160-NSS: %i", (cap[2] >> 3) & 0x7);
1120 i = cap[2] >> 6;
1121 i |= (cap[3] & 0x1) << 3;
1122 PRINT("SOUNDING-DIM-320-NSS: %i", i);
1123
1124 PFLAG(PHY, 3, NG_16_SU_FEEDBACK, "NG-16-SU-FEEDBACK");
1125 PFLAG(PHY, 3, NG_16_MU_FEEDBACK, "NG-16-MU-FEEDBACK");
1126 PFLAG(PHY, 3, CODEBOOK_4_2_SU_FDBK, "CODEBOOK-4-2-SU-FDBK");
1127 PFLAG(PHY, 3, CODEBOOK_7_5_MU_FDBK, "CODEBOOK-7-5-MU-FDBK");
1128 PFLAG(PHY, 3, TRIG_SU_BF_FDBK, "TRIG-SU-BF-FDBK");
1129 PFLAG(PHY, 3, TRIG_MU_BF_PART_BW_FDBK, "TRIG-MU-BF-PART-BW-FDBK");
1130 PFLAG(PHY, 3, TRIG_CQI_FDBK, "TRIG-CQI-FDBK");
1131
1132 PFLAG(PHY, 4, PART_BW_DL_MU_MIMO, "PART-BW-DL-MU-MIMO");
1133 PFLAG(PHY, 4, PSR_SR_SUPP, "PSR-SR-SUPP");
1134 PFLAG(PHY, 4, POWER_BOOST_FACT_SUPP, "POWER-BOOST-FACT-SUPP");
1135 PFLAG(PHY, 4, EHT_MU_PPDU_4_EHT_LTF_08_GI, "EHT-MU-PPDU-4-EHT-LTF-08-GI");
1136 PRINT("MAX_NC: %i", cap[4] >> 4);
1137
1138 PFLAG(PHY, 5, NON_TRIG_CQI_FEEDBACK, "NON-TRIG-CQI-FEEDBACK");
1139 PFLAG(PHY, 5, TX_LESS_242_TONE_RU_SUPP, "TX-LESS-242-TONE-RU-SUPP");
1140 PFLAG(PHY, 5, RX_LESS_242_TONE_RU_SUPP, "RX-LESS-242-TONE-RU-SUPP");
1141 PFLAG(PHY, 5, PPE_THRESHOLD_PRESENT, "PPE_THRESHOLD_PRESENT");
1142 switch (cap[5] >> 4 & 0x3) {
1143 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_0US:
1144 PRINT("NOMINAL_PKT_PAD: 0us");
1145 break;
1146 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_8US:
1147 PRINT("NOMINAL_PKT_PAD: 8us");
1148 break;
1149 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_16US:
1150 PRINT("NOMINAL_PKT_PAD: 16us");
1151 break;
1152 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_20US:
1153 PRINT("NOMINAL_PKT_PAD: 20us");
1154 break;
1155 }
1156 i = cap[5] >> 6;
1157 i |= cap[6] & 0x7;
1158 PRINT("MAX-NUM-SUPP-EHT-LTF: %i", i);
1159 PFLAG(PHY, 5, SUPP_EXTRA_EHT_LTF, "SUPP-EXTRA-EHT-LTF");
1160
1161 i = (cap[6] >> 3) & 0xf;
1162 PRINT("MCS15-SUPP-MASK: %i", i);
1163 PFLAG(PHY, 6, EHT_DUP_6GHZ_SUPP, "EHT-DUP-6GHZ-SUPP");
1164
1165 PFLAG(PHY, 7, 20MHZ_STA_RX_NDP_WIDER_BW, "20MHZ-STA-RX-NDP-WIDER-BW");
1166 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_80MHZ, "NON-OFDMA-UL-MU-MIMO-80MHZ");
1167 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_160MHZ, "NON-OFDMA-UL-MU-MIMO-160MHZ");
1168 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_320MHZ, "NON-OFDMA-UL-MU-MIMO-320MHZ");
1169 PFLAG(PHY, 7, MU_BEAMFORMER_80MHZ, "MU-BEAMFORMER-80MHZ");
1170 PFLAG(PHY, 7, MU_BEAMFORMER_160MHZ, "MU-BEAMFORMER-160MHZ");
1171 PFLAG(PHY, 7, MU_BEAMFORMER_320MHZ, "MU-BEAMFORMER-320MHZ");
1172 PFLAG(PHY, 7, TB_SOUNDING_FDBK_RATE_LIMIT, "TB-SOUNDING-FDBK-RATE-LIMIT");
1173
1174 PFLAG(PHY, 8, RX_1024QAM_WIDER_BW_DL_OFDMA, "RX-1024QAM-WIDER-BW-DL-OFDMA");
1175 PFLAG(PHY, 8, RX_4096QAM_WIDER_BW_DL_OFDMA, "RX-4096QAM-WIDER-BW-DL-OFDMA");
1176
1177 #undef PFLAG
1178
1179 PRINT(""); /* newline */
1180 if (!(link_sta->pub->he_cap.he_cap_elem.phy_cap_info[0] &
1181 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) {
1182 u8 *mcs_vals = (u8 *)(&nss->only_20mhz);
1183
1184 for (i = 0; i < 4; i++)
1185 PRINT("EHT bw=20 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1186 mcs_desc[i],
1187 mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1188 } else {
1189 u8 *mcs_vals = (u8 *)(&nss->bw._80);
1190
1191 for (i = 0; i < 3; i++)
1192 PRINT("EHT bw <= 80 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1193 mcs_desc[i + 1],
1194 mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1195
1196 mcs_vals = (u8 *)(&nss->bw._160);
1197 for (i = 0; i < 3; i++)
1198 PRINT("EHT bw <= 160 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1199 mcs_desc[i + 1],
1200 mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1201
1202 mcs_vals = (u8 *)(&nss->bw._320);
1203 for (i = 0; i < 3; i++)
1204 PRINT("EHT bw <= 320 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1205 mcs_desc[i + 1],
1206 mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1207 }
1208
1209 if (cap[5] & IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) {
1210 u8 ppe_size = ieee80211_eht_ppe_size(bec->eht_ppe_thres[0], cap);
1211
1212 p += scnprintf(p, buf_sz + buf - p, "EHT PPE Thresholds: ");
1213 for (i = 0; i < ppe_size; i++)
1214 p += scnprintf(p, buf_sz + buf - p, "0x%02x ",
1215 bec->eht_ppe_thres[i]);
1216 PRINT(""); /* newline */
1217 }
1218
1219 out:
1220 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1221 kfree(buf);
1222 return ret;
1223 }
1224 LINK_STA_OPS(eht_capa);
1225
1226 #define DEBUGFS_ADD(name) \
1227 debugfs_create_file(#name, 0400, \
1228 sta->debugfs_dir, sta, &sta_ ##name## _ops)
1229
1230 #define DEBUGFS_ADD_COUNTER(name, field) \
1231 debugfs_create_ulong(#name, 0400, sta->debugfs_dir, &sta->field);
1232
ieee80211_sta_debugfs_add(struct sta_info * sta)1233 void ieee80211_sta_debugfs_add(struct sta_info *sta)
1234 {
1235 struct ieee80211_local *local = sta->local;
1236 struct ieee80211_sub_if_data *sdata = sta->sdata;
1237 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
1238 u8 mac[MAC_ADDR_STR_LEN + 1];
1239
1240 if (!stations_dir)
1241 return;
1242
1243 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
1244
1245 /*
1246 * This might fail due to a race condition:
1247 * When mac80211 unlinks a station, the debugfs entries
1248 * remain, but it is already possible to link a new
1249 * station with the same address which triggers adding
1250 * it to debugfs; therefore, if the old station isn't
1251 * destroyed quickly enough the old station's debugfs
1252 * dir might still be around.
1253 */
1254 sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
1255
1256 DEBUGFS_ADD(flags);
1257 DEBUGFS_ADD(aid);
1258 DEBUGFS_ADD(num_ps_buf_frames);
1259 DEBUGFS_ADD(last_seq_ctrl);
1260 DEBUGFS_ADD(agg_status);
1261 /* FIXME: Kept here as the statistics are only done on the deflink */
1262 DEBUGFS_ADD_COUNTER(tx_filtered, deflink.status_stats.filtered);
1263
1264 DEBUGFS_ADD(aqm);
1265 DEBUGFS_ADD(airtime);
1266
1267 if (wiphy_ext_feature_isset(local->hw.wiphy,
1268 NL80211_EXT_FEATURE_AQL))
1269 DEBUGFS_ADD(aql);
1270
1271 debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir,
1272 &sta->driver_buffered_tids);
1273
1274 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
1275 }
1276
ieee80211_sta_debugfs_remove(struct sta_info * sta)1277 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
1278 {
1279 debugfs_remove_recursive(sta->debugfs_dir);
1280 sta->debugfs_dir = NULL;
1281 }
1282
1283 #undef DEBUGFS_ADD
1284 #undef DEBUGFS_ADD_COUNTER
1285
1286 #define DEBUGFS_ADD(name) \
1287 debugfs_create_file(#name, 0400, \
1288 link_sta->debugfs_dir, link_sta, &link_sta_ ##name## _ops)
1289 #define DEBUGFS_ADD_COUNTER(name, field) \
1290 debugfs_create_ulong(#name, 0400, link_sta->debugfs_dir, &link_sta->field)
1291
ieee80211_link_sta_debugfs_add(struct link_sta_info * link_sta)1292 void ieee80211_link_sta_debugfs_add(struct link_sta_info *link_sta)
1293 {
1294 if (WARN_ON(!link_sta->sta->debugfs_dir))
1295 return;
1296
1297 /* For non-MLO, leave the files in the main directory. */
1298 if (link_sta->sta->sta.valid_links) {
1299 char link_dir_name[10];
1300
1301 snprintf(link_dir_name, sizeof(link_dir_name),
1302 "link-%d", link_sta->link_id);
1303
1304 link_sta->debugfs_dir =
1305 debugfs_create_dir(link_dir_name,
1306 link_sta->sta->debugfs_dir);
1307
1308 DEBUGFS_ADD(addr);
1309 } else {
1310 if (WARN_ON(link_sta != &link_sta->sta->deflink))
1311 return;
1312
1313 link_sta->debugfs_dir = link_sta->sta->debugfs_dir;
1314 }
1315
1316 DEBUGFS_ADD(ht_capa);
1317 DEBUGFS_ADD(vht_capa);
1318 DEBUGFS_ADD(he_capa);
1319 DEBUGFS_ADD(eht_capa);
1320
1321 DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
1322 DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
1323 }
1324
ieee80211_link_sta_debugfs_remove(struct link_sta_info * link_sta)1325 void ieee80211_link_sta_debugfs_remove(struct link_sta_info *link_sta)
1326 {
1327 if (!link_sta->debugfs_dir || !link_sta->sta->debugfs_dir) {
1328 link_sta->debugfs_dir = NULL;
1329 return;
1330 }
1331
1332 if (link_sta->debugfs_dir == link_sta->sta->debugfs_dir) {
1333 WARN_ON(link_sta != &link_sta->sta->deflink);
1334 link_sta->sta->debugfs_dir = NULL;
1335 return;
1336 }
1337
1338 debugfs_remove_recursive(link_sta->debugfs_dir);
1339 link_sta->debugfs_dir = NULL;
1340 }
1341
ieee80211_link_sta_debugfs_drv_add(struct link_sta_info * link_sta)1342 void ieee80211_link_sta_debugfs_drv_add(struct link_sta_info *link_sta)
1343 {
1344 if (WARN_ON(!link_sta->debugfs_dir))
1345 return;
1346
1347 drv_link_sta_add_debugfs(link_sta->sta->local, link_sta->sta->sdata,
1348 link_sta->pub, link_sta->debugfs_dir);
1349 }
1350
ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info * link_sta)1351 void ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info *link_sta)
1352 {
1353 if (!link_sta->debugfs_dir)
1354 return;
1355
1356 if (WARN_ON(link_sta->debugfs_dir == link_sta->sta->debugfs_dir))
1357 return;
1358
1359 /* Recreate the directory excluding the driver data */
1360 debugfs_remove_recursive(link_sta->debugfs_dir);
1361 link_sta->debugfs_dir = NULL;
1362
1363 ieee80211_link_sta_debugfs_add(link_sta);
1364 }
1365