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 "target %uus interval %uus ecn %s\n",
156 codel_time_to_us(sta->cparams.target),
157 codel_time_to_us(sta->cparams.interval),
158 sta->cparams.ecn ? "yes" : "no");
159 p += scnprintf(p,
160 bufsz + buf - p,
161 "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");
162
163 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
164 if (!sta->sta.txq[i])
165 continue;
166 txqi = to_txq_info(sta->sta.txq[i]);
167 p += scnprintf(p, bufsz + buf - p,
168 "%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s%s)\n",
169 txqi->txq.tid,
170 txqi->txq.ac,
171 txqi->tin.backlog_bytes,
172 txqi->tin.backlog_packets,
173 txqi->tin.flows,
174 txqi->cstats.drop_count,
175 txqi->cstats.ecn_mark,
176 txqi->tin.overlimit,
177 txqi->tin.collisions,
178 txqi->tin.tx_bytes,
179 txqi->tin.tx_packets,
180 txqi->flags,
181 test_bit(IEEE80211_TXQ_STOP, &txqi->flags) ? "STOP" : "RUN",
182 test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags) ? " AMPDU" : "",
183 test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags) ? " NO-AMSDU" : "",
184 test_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ? " DIRTY" : "");
185 }
186
187 rcu_read_unlock();
188 spin_unlock_bh(&local->fq.lock);
189
190 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
191 kfree(buf);
192 return rv;
193 }
194 STA_OPS(aqm);
195
sta_airtime_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)196 static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
197 size_t count, loff_t *ppos)
198 {
199 struct sta_info *sta = file->private_data;
200 struct ieee80211_local *local = sta->sdata->local;
201 size_t bufsz = 400;
202 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
203 u64 rx_airtime = 0, tx_airtime = 0;
204 s32 deficit[IEEE80211_NUM_ACS];
205 ssize_t rv;
206 int ac;
207
208 if (!buf)
209 return -ENOMEM;
210
211 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
212 spin_lock_bh(&local->active_txq_lock[ac]);
213 rx_airtime += sta->airtime[ac].rx_airtime;
214 tx_airtime += sta->airtime[ac].tx_airtime;
215 deficit[ac] = sta->airtime[ac].deficit;
216 spin_unlock_bh(&local->active_txq_lock[ac]);
217 }
218
219 p += scnprintf(p, bufsz + buf - p,
220 "RX: %llu us\nTX: %llu us\nWeight: %u\n"
221 "Deficit: VO: %d us VI: %d us BE: %d us BK: %d us\n",
222 rx_airtime, tx_airtime, sta->airtime_weight,
223 deficit[0], deficit[1], deficit[2], deficit[3]);
224
225 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
226 kfree(buf);
227 return rv;
228 }
229
sta_airtime_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)230 static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
231 size_t count, loff_t *ppos)
232 {
233 struct sta_info *sta = file->private_data;
234 struct ieee80211_local *local = sta->sdata->local;
235 int ac;
236
237 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
238 spin_lock_bh(&local->active_txq_lock[ac]);
239 sta->airtime[ac].rx_airtime = 0;
240 sta->airtime[ac].tx_airtime = 0;
241 sta->airtime[ac].deficit = sta->airtime_weight;
242 spin_unlock_bh(&local->active_txq_lock[ac]);
243 }
244
245 return count;
246 }
247 STA_OPS_RW(airtime);
248
sta_aql_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)249 static ssize_t sta_aql_read(struct file *file, char __user *userbuf,
250 size_t count, loff_t *ppos)
251 {
252 struct sta_info *sta = file->private_data;
253 struct ieee80211_local *local = sta->sdata->local;
254 size_t bufsz = 400;
255 char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
256 u32 q_depth[IEEE80211_NUM_ACS];
257 u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS];
258 ssize_t rv;
259 int ac;
260
261 if (!buf)
262 return -ENOMEM;
263
264 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
265 spin_lock_bh(&local->active_txq_lock[ac]);
266 q_limit_l[ac] = sta->airtime[ac].aql_limit_low;
267 q_limit_h[ac] = sta->airtime[ac].aql_limit_high;
268 spin_unlock_bh(&local->active_txq_lock[ac]);
269 q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending);
270 }
271
272 p += scnprintf(p, bufsz + buf - p,
273 "Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n"
274 "Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n",
275 q_depth[0], q_depth[1], q_depth[2], q_depth[3],
276 q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1],
277 q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]);
278
279 rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
280 kfree(buf);
281 return rv;
282 }
283
sta_aql_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)284 static ssize_t sta_aql_write(struct file *file, const char __user *userbuf,
285 size_t count, loff_t *ppos)
286 {
287 struct sta_info *sta = file->private_data;
288 u32 ac, q_limit_l, q_limit_h;
289 char _buf[100] = {}, *buf = _buf;
290
291 if (count > sizeof(_buf))
292 return -EINVAL;
293
294 if (copy_from_user(buf, userbuf, count))
295 return -EFAULT;
296
297 buf[sizeof(_buf) - 1] = '\0';
298 if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h)
299 != 3)
300 return -EINVAL;
301
302 if (ac >= IEEE80211_NUM_ACS)
303 return -EINVAL;
304
305 sta->airtime[ac].aql_limit_low = q_limit_l;
306 sta->airtime[ac].aql_limit_high = q_limit_h;
307
308 return count;
309 }
310 STA_OPS_RW(aql);
311
312
sta_agg_status_do_read(struct wiphy * wiphy,struct file * file,char * buf,size_t bufsz,void * data)313 static ssize_t sta_agg_status_do_read(struct wiphy *wiphy, struct file *file,
314 char *buf, size_t bufsz, void *data)
315 {
316 struct sta_info *sta = data;
317 char *p = buf;
318 int i;
319 struct tid_ampdu_rx *tid_rx;
320 struct tid_ampdu_tx *tid_tx;
321
322 p += scnprintf(p, bufsz + buf - p, "next dialog_token: %#02x\n",
323 sta->ampdu_mlme.dialog_token_allocator + 1);
324 p += scnprintf(p, bufsz + buf - p,
325 "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
326
327 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
328 bool tid_rx_valid;
329
330 tid_rx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_rx[i]);
331 tid_tx = wiphy_dereference(wiphy, sta->ampdu_mlme.tid_tx[i]);
332 tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);
333
334 p += scnprintf(p, bufsz + buf - p, "%02d", i);
335 p += scnprintf(p, bufsz + buf - p, "\t\t%x",
336 tid_rx_valid);
337 p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
338 tid_rx_valid ?
339 sta->ampdu_mlme.tid_rx_token[i] : 0);
340 p += scnprintf(p, bufsz + buf - p, "\t%#.3x",
341 tid_rx ? tid_rx->ssn : 0);
342
343 p += scnprintf(p, bufsz + buf - p, "\t\t%x", !!tid_tx);
344 p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
345 tid_tx ? tid_tx->dialog_token : 0);
346 p += scnprintf(p, bufsz + buf - p, "\t%03d",
347 tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
348 p += scnprintf(p, bufsz + buf - p, "\n");
349 }
350
351 return p - buf;
352 }
353
sta_agg_status_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)354 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
355 size_t count, loff_t *ppos)
356 {
357 struct sta_info *sta = file->private_data;
358 struct wiphy *wiphy = sta->local->hw.wiphy;
359 size_t bufsz = 71 + IEEE80211_NUM_TIDS * 40;
360 char *buf = kmalloc(bufsz, GFP_KERNEL);
361 ssize_t ret;
362
363 if (!buf)
364 return -ENOMEM;
365
366 ret = wiphy_locked_debugfs_read(wiphy, file, buf, bufsz,
367 userbuf, count, ppos,
368 sta_agg_status_do_read, sta);
369 kfree(buf);
370
371 return ret;
372 }
373
sta_agg_status_do_write(struct wiphy * wiphy,struct file * file,char * buf,size_t count,void * data)374 static ssize_t sta_agg_status_do_write(struct wiphy *wiphy, struct file *file,
375 char *buf, size_t count, void *data)
376 {
377 struct sta_info *sta = data;
378 bool start, tx;
379 unsigned long tid;
380 char *pos = buf;
381 int ret, timeout = 5000;
382
383 buf = strsep(&pos, " ");
384 if (!buf)
385 return -EINVAL;
386
387 if (!strcmp(buf, "tx"))
388 tx = true;
389 else if (!strcmp(buf, "rx"))
390 tx = false;
391 else
392 return -EINVAL;
393
394 buf = strsep(&pos, " ");
395 if (!buf)
396 return -EINVAL;
397 if (!strcmp(buf, "start")) {
398 start = true;
399 if (!tx)
400 return -EINVAL;
401 } else if (!strcmp(buf, "stop")) {
402 start = false;
403 } else {
404 return -EINVAL;
405 }
406
407 buf = strsep(&pos, " ");
408 if (!buf)
409 return -EINVAL;
410 if (sscanf(buf, "timeout=%d", &timeout) == 1) {
411 buf = strsep(&pos, " ");
412 if (!buf || !tx || !start)
413 return -EINVAL;
414 }
415
416 ret = kstrtoul(buf, 0, &tid);
417 if (ret || tid >= IEEE80211_NUM_TIDS)
418 return -EINVAL;
419
420 if (tx) {
421 if (start)
422 ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
423 timeout);
424 else
425 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
426 } else {
427 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
428 3, true);
429 ret = 0;
430 }
431
432 return ret ?: count;
433 }
434
sta_agg_status_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)435 static ssize_t sta_agg_status_write(struct file *file,
436 const char __user *userbuf,
437 size_t count, loff_t *ppos)
438 {
439 struct sta_info *sta = file->private_data;
440 struct wiphy *wiphy = sta->local->hw.wiphy;
441 char _buf[26];
442
443 return wiphy_locked_debugfs_write(wiphy, file, _buf, sizeof(_buf),
444 userbuf, count,
445 sta_agg_status_do_write, sta);
446 }
447 STA_OPS_RW(agg_status);
448
449 /* link sta attributes */
450 #define LINK_STA_OPS(name) \
451 static const struct debugfs_short_fops link_sta_ ##name## _ops = { \
452 .read = link_sta_##name##_read, \
453 .llseek = generic_file_llseek, \
454 }
455
link_sta_addr_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)456 static ssize_t link_sta_addr_read(struct file *file, char __user *userbuf,
457 size_t count, loff_t *ppos)
458 {
459 struct link_sta_info *link_sta = file->private_data;
460 u8 mac[MAC_ADDR_STR_LEN + 2];
461
462 snprintf(mac, sizeof(mac), "%pM\n", link_sta->pub->addr);
463
464 return simple_read_from_buffer(userbuf, count, ppos, mac,
465 MAC_ADDR_STR_LEN + 1);
466 }
467
468 LINK_STA_OPS(addr);
469
link_sta_ht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)470 static ssize_t link_sta_ht_capa_read(struct file *file, char __user *userbuf,
471 size_t count, loff_t *ppos)
472 {
473 #define PRINT_HT_CAP(_cond, _str) \
474 do { \
475 if (_cond) \
476 p += scnprintf(p, bufsz + buf - p, "\t" _str "\n"); \
477 } while (0)
478 char *buf, *p;
479 int i;
480 ssize_t bufsz = 512;
481 struct link_sta_info *link_sta = file->private_data;
482 struct ieee80211_sta_ht_cap *htc = &link_sta->pub->ht_cap;
483 ssize_t ret;
484
485 buf = kzalloc(bufsz, GFP_KERNEL);
486 if (!buf)
487 return -ENOMEM;
488 p = buf;
489
490 p += scnprintf(p, bufsz + buf - p, "ht %ssupported\n",
491 htc->ht_supported ? "" : "not ");
492 if (htc->ht_supported) {
493 p += scnprintf(p, bufsz + buf - p, "cap: %#.4x\n", htc->cap);
494
495 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
496 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
497 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
498
499 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
500 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
501 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
502
503 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
504 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
505 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
506 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
507
508 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
509 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
510 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
511 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
512
513 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
514
515 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
516 "3839 bytes");
517 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
518 "7935 bytes");
519
520 /*
521 * For beacons and probe response this would mean the BSS
522 * does or does not allow the usage of DSSS/CCK HT40.
523 * Otherwise it means the STA does or does not use
524 * DSSS/CCK HT40.
525 */
526 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
527 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
528
529 /* BIT(13) is reserved */
530
531 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
532
533 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
534
535 p += scnprintf(p, bufsz + buf - p, "ampdu factor/density: %d/%d\n",
536 htc->ampdu_factor, htc->ampdu_density);
537 p += scnprintf(p, bufsz + buf - p, "MCS mask:");
538
539 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
540 p += scnprintf(p, bufsz + buf - p, " %.2x",
541 htc->mcs.rx_mask[i]);
542 p += scnprintf(p, bufsz + buf - p, "\n");
543
544 /* If not set this is meaningless */
545 if (le16_to_cpu(htc->mcs.rx_highest)) {
546 p += scnprintf(p, bufsz + buf - p,
547 "MCS rx highest: %d Mbps\n",
548 le16_to_cpu(htc->mcs.rx_highest));
549 }
550
551 p += scnprintf(p, bufsz + buf - p, "MCS tx params: %x\n",
552 htc->mcs.tx_params);
553 }
554
555 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
556 kfree(buf);
557 return ret;
558 }
559 LINK_STA_OPS(ht_capa);
560
link_sta_vht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)561 static ssize_t link_sta_vht_capa_read(struct file *file, char __user *userbuf,
562 size_t count, loff_t *ppos)
563 {
564 char *buf, *p;
565 struct link_sta_info *link_sta = file->private_data;
566 struct ieee80211_sta_vht_cap *vhtc = &link_sta->pub->vht_cap;
567 ssize_t ret;
568 ssize_t bufsz = 512;
569
570 buf = kzalloc(bufsz, GFP_KERNEL);
571 if (!buf)
572 return -ENOMEM;
573 p = buf;
574
575 p += scnprintf(p, bufsz + buf - p, "VHT %ssupported\n",
576 vhtc->vht_supported ? "" : "not ");
577 if (vhtc->vht_supported) {
578 p += scnprintf(p, bufsz + buf - p, "cap: %#.8x\n",
579 vhtc->cap);
580 #define PFLAG(a, b) \
581 do { \
582 if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \
583 p += scnprintf(p, bufsz + buf - p, \
584 "\t\t%s\n", b); \
585 } while (0)
586
587 switch (vhtc->cap & 0x3) {
588 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
589 p += scnprintf(p, bufsz + buf - p,
590 "\t\tMAX-MPDU-3895\n");
591 break;
592 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
593 p += scnprintf(p, bufsz + buf - p,
594 "\t\tMAX-MPDU-7991\n");
595 break;
596 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
597 p += scnprintf(p, bufsz + buf - p,
598 "\t\tMAX-MPDU-11454\n");
599 break;
600 default:
601 p += scnprintf(p, bufsz + buf - p,
602 "\t\tMAX-MPDU-UNKNOWN\n");
603 }
604 switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
605 case 0:
606 p += scnprintf(p, bufsz + buf - p,
607 "\t\t80Mhz\n");
608 break;
609 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
610 p += scnprintf(p, bufsz + buf - p,
611 "\t\t160Mhz\n");
612 break;
613 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
614 p += scnprintf(p, bufsz + buf - p,
615 "\t\t80+80Mhz\n");
616 break;
617 default:
618 p += scnprintf(p, bufsz + buf - p,
619 "\t\tUNKNOWN-MHZ: 0x%x\n",
620 (vhtc->cap >> 2) & 0x3);
621 }
622 PFLAG(RXLDPC, "RXLDPC");
623 PFLAG(SHORT_GI_80, "SHORT-GI-80");
624 PFLAG(SHORT_GI_160, "SHORT-GI-160");
625 PFLAG(TXSTBC, "TXSTBC");
626 p += scnprintf(p, bufsz + buf - p,
627 "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
628 PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
629 PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
630 p += scnprintf(p, bufsz + buf - p,
631 "\t\tBEAMFORMEE-STS: 0x%x\n",
632 (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
633 IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
634 p += scnprintf(p, bufsz + buf - p,
635 "\t\tSOUNDING-DIMENSIONS: 0x%x\n",
636 (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
637 >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
638 PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
639 PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
640 PFLAG(VHT_TXOP_PS, "TXOP-PS");
641 PFLAG(HTC_VHT, "HTC-VHT");
642 p += scnprintf(p, bufsz + buf - p,
643 "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
644 (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
645 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
646 PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
647 "LINK-ADAPTATION-VHT-UNSOL-MFB");
648 p += scnprintf(p, bufsz + buf - p,
649 "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
650 (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
651 PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
652 PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
653
654 p += scnprintf(p, bufsz + buf - p, "RX MCS: %.4x\n",
655 le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
656 if (vhtc->vht_mcs.rx_highest)
657 p += scnprintf(p, bufsz + buf - p,
658 "MCS RX highest: %d Mbps\n",
659 le16_to_cpu(vhtc->vht_mcs.rx_highest));
660 p += scnprintf(p, bufsz + buf - p, "TX MCS: %.4x\n",
661 le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
662 if (vhtc->vht_mcs.tx_highest)
663 p += scnprintf(p, bufsz + buf - p,
664 "MCS TX highest: %d Mbps\n",
665 le16_to_cpu(vhtc->vht_mcs.tx_highest));
666 #undef PFLAG
667 }
668
669 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
670 kfree(buf);
671 return ret;
672 }
673 LINK_STA_OPS(vht_capa);
674
link_sta_he_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)675 static ssize_t link_sta_he_capa_read(struct file *file, char __user *userbuf,
676 size_t count, loff_t *ppos)
677 {
678 char *buf, *p;
679 size_t buf_sz = PAGE_SIZE;
680 struct link_sta_info *link_sta = file->private_data;
681 struct ieee80211_sta_he_cap *hec = &link_sta->pub->he_cap;
682 struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp;
683 u8 ppe_size;
684 u8 *cap;
685 int i;
686 ssize_t ret;
687
688 buf = kmalloc(buf_sz, GFP_KERNEL);
689 if (!buf)
690 return -ENOMEM;
691 p = buf;
692
693 p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n",
694 hec->has_he ? "" : "not ");
695 if (!hec->has_he)
696 goto out;
697
698 cap = hec->he_cap_elem.mac_cap_info;
699 p += scnprintf(p, buf_sz + buf - p,
700 "MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
701 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]);
702
703 #define PRINT(fmt, ...) \
704 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \
705 ##__VA_ARGS__)
706
707 #define PFLAG(t, n, a, b) \
708 do { \
709 if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a) \
710 PRINT("%s", b); \
711 } while (0)
712
713 #define PFLAG_RANGE(t, i, n, s, m, off, fmt) \
714 do { \
715 u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK; \
716 u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off; \
717 PRINT(fmt, (s << idx) + (m * idx)); \
718 } while (0)
719
720 #define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b) \
721 do { \
722 if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) { \
723 PRINT("%s", b); \
724 break; \
725 } \
726 PFLAG_RANGE(t, i, n, s, m, off, fmt); \
727 } while (0)
728
729 PFLAG(MAC, 0, HTC_HE, "HTC-HE");
730 PFLAG(MAC, 0, TWT_REQ, "TWT-REQ");
731 PFLAG(MAC, 0, TWT_RES, "TWT-RES");
732 PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0,
733 "DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP");
734 PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0,
735 "MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED");
736
737 PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1,
738 "MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED");
739 PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0,
740 "TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN");
741 PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1,
742 "MULTI-TID-AGG-RX-QOS-%d");
743
744 if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) {
745 switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) {
746 case 0:
747 PRINT("LINK-ADAPTATION-NO-FEEDBACK");
748 break;
749 case 1:
750 PRINT("LINK-ADAPTATION-RESERVED");
751 break;
752 case 2:
753 PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK");
754 break;
755 case 3:
756 PRINT("LINK-ADAPTATION-BOTH");
757 break;
758 }
759 }
760
761 PFLAG(MAC, 2, ALL_ACK, "ALL-ACK");
762 PFLAG(MAC, 2, TRS, "TRS");
763 PFLAG(MAC, 2, BSR, "BSR");
764 PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT");
765 PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP");
766 PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING");
767 PFLAG(MAC, 2, ACK_EN, "ACK-EN");
768
769 PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL");
770 PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA");
771
772 switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) {
773 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_0:
774 PRINT("MAX-AMPDU-LEN-EXP-USE-EXT-0");
775 break;
776 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_1:
777 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-1");
778 break;
779 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_2:
780 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-2");
781 break;
782 case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3:
783 PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-3");
784 break;
785 }
786
787 PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG");
788 PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED");
789 PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS");
790
791 PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG");
792 PFLAG(MAC, 4, QTP, "QTP");
793 PFLAG(MAC, 4, BQR, "BQR");
794 PFLAG(MAC, 4, PSR_RESP, "PSR-RESP");
795 PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP");
796 PFLAG(MAC, 4, OPS, "OPS");
797 PFLAG(MAC, 4, AMSDU_IN_AMPDU, "AMSDU-IN-AMPDU");
798
799 PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7);
800
801 PFLAG(MAC, 5, SUBCHAN_SELECTIVE_TRANSMISSION,
802 "SUBCHAN-SELECTIVE-TRANSMISSION");
803 PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU");
804 PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX");
805 PFLAG(MAC, 5, HE_DYNAMIC_SM_PS, "HE-DYNAMIC-SM-PS");
806 PFLAG(MAC, 5, PUNCTURED_SOUNDING, "PUNCTURED-SOUNDING");
807 PFLAG(MAC, 5, HT_VHT_TRIG_FRAME_RX, "HT-VHT-TRIG-FRAME-RX");
808
809 cap = hec->he_cap_elem.phy_cap_info;
810 p += scnprintf(p, buf_sz + buf - p,
811 "PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
812 cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6],
813 cap[7], cap[8], cap[9], cap[10]);
814
815 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G,
816 "CHANNEL-WIDTH-SET-40MHZ-IN-2G");
817 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G,
818 "CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G");
819 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G,
820 "CHANNEL-WIDTH-SET-160MHZ-IN-5G");
821 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
822 "CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G");
823 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G,
824 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G");
825 PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G,
826 "CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G");
827
828 switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) {
829 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ:
830 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ");
831 break;
832 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ:
833 PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ");
834 break;
835 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ:
836 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ");
837 break;
838 case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ:
839 PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ");
840 break;
841 }
842
843 PFLAG(PHY, 1, DEVICE_CLASS_A,
844 "IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A");
845 PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD,
846 "LDPC-CODING-IN-PAYLOAD");
847 PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US,
848 "HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US");
849 PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3);
850
851 PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US");
852 PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ");
853 PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ");
854 PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX");
855 PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX");
856 PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO");
857 PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO");
858
859 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) {
860 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM:
861 PRINT("DCM-MAX-CONST-TX-NO-DCM");
862 break;
863 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK:
864 PRINT("DCM-MAX-CONST-TX-BPSK");
865 break;
866 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK:
867 PRINT("DCM-MAX-CONST-TX-QPSK");
868 break;
869 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM:
870 PRINT("DCM-MAX-CONST-TX-16-QAM");
871 break;
872 }
873
874 PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1");
875 PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2");
876
877 switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) {
878 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM:
879 PRINT("DCM-MAX-CONST-RX-NO-DCM");
880 break;
881 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK:
882 PRINT("DCM-MAX-CONST-RX-BPSK");
883 break;
884 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK:
885 PRINT("DCM-MAX-CONST-RX-QPSK");
886 break;
887 case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM:
888 PRINT("DCM-MAX-CONST-RX-16-QAM");
889 break;
890 }
891
892 PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1");
893 PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2");
894 PFLAG(PHY, 3, RX_PARTIAL_BW_SU_IN_20MHZ_MU,
895 "RX-PARTIAL-BW-SU-IN-20MHZ-MU");
896 PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER");
897
898 PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE");
899 PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER");
900
901 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4,
902 "BEAMFORMEE-MAX-STS-UNDER-%d");
903 PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4,
904 "BEAMFORMEE-MAX-STS-ABOVE-%d");
905
906 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1,
907 "NUM-SND-DIM-UNDER-80MHZ-%d");
908 PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1,
909 "NUM-SND-DIM-ABOVE-80MHZ-%d");
910 PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK");
911 PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK");
912
913 PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU");
914 PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU");
915 PFLAG(PHY, 6, TRIG_SU_BEAMFORMING_FB, "TRIG-SU-BEAMFORMING-FB");
916 PFLAG(PHY, 6, TRIG_MU_BEAMFORMING_PARTIAL_BW_FB,
917 "MU-BEAMFORMING-PARTIAL-BW-FB");
918 PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB");
919 PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE");
920 PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO,
921 "PARTIAL-BANDWIDTH-DL-MUMIMO");
922 PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT");
923
924 PFLAG(PHY, 7, PSR_BASED_SR, "PSR-BASED-SR");
925 PFLAG(PHY, 7, POWER_BOOST_FACTOR_SUPP, "POWER-BOOST-FACTOR-SUPP");
926 PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI,
927 "HE-SU-MU-PPDU-4XLTF-AND-08-US-GI");
928 PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d");
929 PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ");
930 PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ");
931
932 PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI,
933 "HE-ER-SU-PPDU-4XLTF-AND-08-US-GI");
934 PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G,
935 "20MHZ-IN-40MHZ-HE-PPDU-IN-2G");
936 PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU");
937 PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU");
938 PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI,
939 "HE-ER-SU-1XLTF-AND-08-US-GI");
940 PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF,
941 "MIDAMBLE-RX-TX-2X-AND-1XLTF");
942
943 switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK) {
944 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242:
945 PRINT("DCM-MAX-RU-242");
946 break;
947 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484:
948 PRINT("DCM-MAX-RU-484");
949 break;
950 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996:
951 PRINT("DCM-MAX-RU-996");
952 break;
953 case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996:
954 PRINT("DCM-MAX-RU-2x996");
955 break;
956 }
957
958 PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM,
959 "LONGER-THAN-16-SIGB-OFDM-SYM");
960 PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK,
961 "NON-TRIGGERED-CQI-FEEDBACK");
962 PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU,
963 "TX-1024-QAM-LESS-THAN-242-TONE-RU");
964 PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU,
965 "RX-1024-QAM-LESS-THAN-242-TONE-RU");
966 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB,
967 "RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB");
968 PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB,
969 "RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB");
970
971 switch (u8_get_bits(cap[9],
972 IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK)) {
973 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US:
974 PRINT("NOMINAL-PACKET-PADDING-0US");
975 break;
976 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US:
977 PRINT("NOMINAL-PACKET-PADDING-8US");
978 break;
979 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US:
980 PRINT("NOMINAL-PACKET-PADDING-16US");
981 break;
982 }
983
984 #undef PFLAG_RANGE_DEFAULT
985 #undef PFLAG_RANGE
986 #undef PFLAG
987
988 #define PRINT_NSS_SUPP(f, n) \
989 do { \
990 int _i; \
991 u16 v = le16_to_cpu(nss->f); \
992 p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v); \
993 for (_i = 0; _i < 8; _i += 2) { \
994 switch ((v >> _i) & 0x3) { \
995 case 0: \
996 PRINT(n "-%d-SUPPORT-0-7", _i / 2); \
997 break; \
998 case 1: \
999 PRINT(n "-%d-SUPPORT-0-9", _i / 2); \
1000 break; \
1001 case 2: \
1002 PRINT(n "-%d-SUPPORT-0-11", _i / 2); \
1003 break; \
1004 case 3: \
1005 PRINT(n "-%d-NOT-SUPPORTED", _i / 2); \
1006 break; \
1007 } \
1008 } \
1009 } while (0)
1010
1011 PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80");
1012 PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80");
1013
1014 if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) {
1015 PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160");
1016 PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160");
1017 }
1018
1019 if (cap[0] &
1020 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
1021 PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80");
1022 PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80");
1023 }
1024
1025 #undef PRINT_NSS_SUPP
1026 #undef PRINT
1027
1028 if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT))
1029 goto out;
1030
1031 p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x",
1032 hec->ppe_thres[0]);
1033
1034 ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap);
1035 for (i = 1; i < ppe_size; i++) {
1036 p += scnprintf(p, buf_sz + buf - p, " %#.2x",
1037 hec->ppe_thres[i]);
1038 }
1039 p += scnprintf(p, buf_sz + buf - p, "\n");
1040
1041 out:
1042 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1043 kfree(buf);
1044 return ret;
1045 }
1046 LINK_STA_OPS(he_capa);
1047
link_sta_eht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)1048 static ssize_t link_sta_eht_capa_read(struct file *file, char __user *userbuf,
1049 size_t count, loff_t *ppos)
1050 {
1051 char *buf, *p;
1052 size_t buf_sz = PAGE_SIZE;
1053 struct link_sta_info *link_sta = file->private_data;
1054 struct ieee80211_sta_eht_cap *bec = &link_sta->pub->eht_cap;
1055 struct ieee80211_eht_cap_elem_fixed *fixed = &bec->eht_cap_elem;
1056 struct ieee80211_eht_mcs_nss_supp *nss = &bec->eht_mcs_nss_supp;
1057 u8 *cap;
1058 int i;
1059 ssize_t ret;
1060 static const char *mcs_desc[] = { "0-7", "8-9", "10-11", "12-13"};
1061
1062 buf = kmalloc(buf_sz, GFP_KERNEL);
1063 if (!buf)
1064 return -ENOMEM;
1065 p = buf;
1066
1067 p += scnprintf(p, buf_sz + buf - p, "EHT %ssupported\n",
1068 bec->has_eht ? "" : "not ");
1069 if (!bec->has_eht)
1070 goto out;
1071
1072 p += scnprintf(p, buf_sz + buf - p,
1073 "MAC-CAP: %#.2x %#.2x\n",
1074 fixed->mac_cap_info[0], fixed->mac_cap_info[1]);
1075 p += scnprintf(p, buf_sz + buf - p,
1076 "PHY-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
1077 fixed->phy_cap_info[0], fixed->phy_cap_info[1],
1078 fixed->phy_cap_info[2], fixed->phy_cap_info[3],
1079 fixed->phy_cap_info[4], fixed->phy_cap_info[5],
1080 fixed->phy_cap_info[6], fixed->phy_cap_info[7],
1081 fixed->phy_cap_info[8]);
1082
1083 #define PRINT(fmt, ...) \
1084 p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \
1085 ##__VA_ARGS__)
1086
1087 #define PFLAG(t, n, a, b) \
1088 do { \
1089 if (cap[n] & IEEE80211_EHT_##t##_CAP##n##_##a) \
1090 PRINT("%s", b); \
1091 } while (0)
1092
1093 cap = fixed->mac_cap_info;
1094 PFLAG(MAC, 0, EPCS_PRIO_ACCESS, "EPCS-PRIO-ACCESS");
1095 PFLAG(MAC, 0, OM_CONTROL, "OM-CONTROL");
1096 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE1, "TRIG-TXOP-SHARING-MODE1");
1097 PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE2, "TRIG-TXOP-SHARING-MODE2");
1098 PFLAG(MAC, 0, RESTRICTED_TWT, "RESTRICTED-TWT");
1099 PFLAG(MAC, 0, SCS_TRAFFIC_DESC, "SCS-TRAFFIC-DESC");
1100 switch ((cap[0] & 0xc0) >> 6) {
1101 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_3895:
1102 PRINT("MAX-MPDU-LEN: 3985");
1103 break;
1104 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991:
1105 PRINT("MAX-MPDU-LEN: 7991");
1106 break;
1107 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454:
1108 PRINT("MAX-MPDU-LEN: 11454");
1109 break;
1110 }
1111
1112 cap = fixed->phy_cap_info;
1113 PFLAG(PHY, 0, 320MHZ_IN_6GHZ, "320MHZ-IN-6GHZ");
1114 PFLAG(PHY, 0, 242_TONE_RU_GT20MHZ, "242-TONE-RU-GT20MHZ");
1115 PFLAG(PHY, 0, NDP_4_EHT_LFT_32_GI, "NDP-4-EHT-LFT-32-GI");
1116 PFLAG(PHY, 0, PARTIAL_BW_UL_MU_MIMO, "PARTIAL-BW-UL-MU-MIMO");
1117 PFLAG(PHY, 0, SU_BEAMFORMER, "SU-BEAMFORMER");
1118 PFLAG(PHY, 0, SU_BEAMFORMEE, "SU-BEAMFORMEE");
1119 i = cap[0] >> 7;
1120 i |= (cap[1] & 0x3) << 1;
1121 PRINT("BEAMFORMEE-80-NSS: %i", i);
1122 PRINT("BEAMFORMEE-160-NSS: %i", (cap[1] >> 2) & 0x7);
1123 PRINT("BEAMFORMEE-320-NSS: %i", (cap[1] >> 5) & 0x7);
1124 PRINT("SOUNDING-DIM-80-NSS: %i", (cap[2] & 0x7));
1125 PRINT("SOUNDING-DIM-160-NSS: %i", (cap[2] >> 3) & 0x7);
1126 i = cap[2] >> 6;
1127 i |= (cap[3] & 0x1) << 3;
1128 PRINT("SOUNDING-DIM-320-NSS: %i", i);
1129
1130 PFLAG(PHY, 3, NG_16_SU_FEEDBACK, "NG-16-SU-FEEDBACK");
1131 PFLAG(PHY, 3, NG_16_MU_FEEDBACK, "NG-16-MU-FEEDBACK");
1132 PFLAG(PHY, 3, CODEBOOK_4_2_SU_FDBK, "CODEBOOK-4-2-SU-FDBK");
1133 PFLAG(PHY, 3, CODEBOOK_7_5_MU_FDBK, "CODEBOOK-7-5-MU-FDBK");
1134 PFLAG(PHY, 3, TRIG_SU_BF_FDBK, "TRIG-SU-BF-FDBK");
1135 PFLAG(PHY, 3, TRIG_MU_BF_PART_BW_FDBK, "TRIG-MU-BF-PART-BW-FDBK");
1136 PFLAG(PHY, 3, TRIG_CQI_FDBK, "TRIG-CQI-FDBK");
1137
1138 PFLAG(PHY, 4, PART_BW_DL_MU_MIMO, "PART-BW-DL-MU-MIMO");
1139 PFLAG(PHY, 4, PSR_SR_SUPP, "PSR-SR-SUPP");
1140 PFLAG(PHY, 4, POWER_BOOST_FACT_SUPP, "POWER-BOOST-FACT-SUPP");
1141 PFLAG(PHY, 4, EHT_MU_PPDU_4_EHT_LTF_08_GI, "EHT-MU-PPDU-4-EHT-LTF-08-GI");
1142 PRINT("MAX_NC: %i", cap[4] >> 4);
1143
1144 PFLAG(PHY, 5, NON_TRIG_CQI_FEEDBACK, "NON-TRIG-CQI-FEEDBACK");
1145 PFLAG(PHY, 5, TX_LESS_242_TONE_RU_SUPP, "TX-LESS-242-TONE-RU-SUPP");
1146 PFLAG(PHY, 5, RX_LESS_242_TONE_RU_SUPP, "RX-LESS-242-TONE-RU-SUPP");
1147 PFLAG(PHY, 5, PPE_THRESHOLD_PRESENT, "PPE_THRESHOLD_PRESENT");
1148 switch (cap[5] >> 4 & 0x3) {
1149 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_0US:
1150 PRINT("NOMINAL_PKT_PAD: 0us");
1151 break;
1152 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_8US:
1153 PRINT("NOMINAL_PKT_PAD: 8us");
1154 break;
1155 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_16US:
1156 PRINT("NOMINAL_PKT_PAD: 16us");
1157 break;
1158 case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_20US:
1159 PRINT("NOMINAL_PKT_PAD: 20us");
1160 break;
1161 }
1162 i = cap[5] >> 6;
1163 i |= cap[6] & 0x7;
1164 PRINT("MAX-NUM-SUPP-EHT-LTF: %i", i);
1165 PFLAG(PHY, 5, SUPP_EXTRA_EHT_LTF, "SUPP-EXTRA-EHT-LTF");
1166
1167 i = (cap[6] >> 3) & 0xf;
1168 PRINT("MCS15-SUPP-MASK: %i", i);
1169 PFLAG(PHY, 6, EHT_DUP_6GHZ_SUPP, "EHT-DUP-6GHZ-SUPP");
1170
1171 PFLAG(PHY, 7, 20MHZ_STA_RX_NDP_WIDER_BW, "20MHZ-STA-RX-NDP-WIDER-BW");
1172 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_80MHZ, "NON-OFDMA-UL-MU-MIMO-80MHZ");
1173 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_160MHZ, "NON-OFDMA-UL-MU-MIMO-160MHZ");
1174 PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_320MHZ, "NON-OFDMA-UL-MU-MIMO-320MHZ");
1175 PFLAG(PHY, 7, MU_BEAMFORMER_80MHZ, "MU-BEAMFORMER-80MHZ");
1176 PFLAG(PHY, 7, MU_BEAMFORMER_160MHZ, "MU-BEAMFORMER-160MHZ");
1177 PFLAG(PHY, 7, MU_BEAMFORMER_320MHZ, "MU-BEAMFORMER-320MHZ");
1178 PFLAG(PHY, 7, TB_SOUNDING_FDBK_RATE_LIMIT, "TB-SOUNDING-FDBK-RATE-LIMIT");
1179
1180 PFLAG(PHY, 8, RX_1024QAM_WIDER_BW_DL_OFDMA, "RX-1024QAM-WIDER-BW-DL-OFDMA");
1181 PFLAG(PHY, 8, RX_4096QAM_WIDER_BW_DL_OFDMA, "RX-4096QAM-WIDER-BW-DL-OFDMA");
1182
1183 #undef PFLAG
1184
1185 PRINT(""); /* newline */
1186 if (!(link_sta->pub->he_cap.he_cap_elem.phy_cap_info[0] &
1187 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) {
1188 u8 *mcs_vals = (u8 *)(&nss->only_20mhz);
1189
1190 for (i = 0; i < 4; i++)
1191 PRINT("EHT bw=20 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1192 mcs_desc[i],
1193 mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1194 } else {
1195 u8 *mcs_vals = (u8 *)(&nss->bw._80);
1196
1197 for (i = 0; i < 3; i++)
1198 PRINT("EHT bw <= 80 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._160);
1203 for (i = 0; i < 3; i++)
1204 PRINT("EHT bw <= 160 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 mcs_vals = (u8 *)(&nss->bw._320);
1209 for (i = 0; i < 3; i++)
1210 PRINT("EHT bw <= 320 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1211 mcs_desc[i + 1],
1212 mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1213 }
1214
1215 if (cap[5] & IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) {
1216 u8 ppe_size = ieee80211_eht_ppe_size(bec->eht_ppe_thres[0], cap);
1217
1218 p += scnprintf(p, buf_sz + buf - p, "EHT PPE Thresholds: ");
1219 for (i = 0; i < ppe_size; i++)
1220 p += scnprintf(p, buf_sz + buf - p, "0x%02x ",
1221 bec->eht_ppe_thres[i]);
1222 PRINT(""); /* newline */
1223 }
1224
1225 out:
1226 ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1227 kfree(buf);
1228 return ret;
1229 }
1230 LINK_STA_OPS(eht_capa);
1231
1232 #define DEBUGFS_ADD(name) \
1233 debugfs_create_file(#name, 0400, \
1234 sta->debugfs_dir, sta, &sta_ ##name## _ops)
1235
1236 #define DEBUGFS_ADD_COUNTER(name, field) \
1237 debugfs_create_ulong(#name, 0400, sta->debugfs_dir, &sta->field);
1238
ieee80211_sta_debugfs_add(struct sta_info * sta)1239 void ieee80211_sta_debugfs_add(struct sta_info *sta)
1240 {
1241 struct ieee80211_local *local = sta->local;
1242 struct ieee80211_sub_if_data *sdata = sta->sdata;
1243 struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
1244 u8 mac[MAC_ADDR_STR_LEN + 1];
1245
1246 if (!stations_dir)
1247 return;
1248
1249 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
1250
1251 /*
1252 * This might fail due to a race condition:
1253 * When mac80211 unlinks a station, the debugfs entries
1254 * remain, but it is already possible to link a new
1255 * station with the same address which triggers adding
1256 * it to debugfs; therefore, if the old station isn't
1257 * destroyed quickly enough the old station's debugfs
1258 * dir might still be around.
1259 */
1260 sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
1261
1262 DEBUGFS_ADD(flags);
1263 DEBUGFS_ADD(aid);
1264 DEBUGFS_ADD(num_ps_buf_frames);
1265 DEBUGFS_ADD(last_seq_ctrl);
1266 DEBUGFS_ADD(agg_status);
1267 /* FIXME: Kept here as the statistics are only done on the deflink */
1268 DEBUGFS_ADD_COUNTER(tx_filtered, deflink.status_stats.filtered);
1269
1270 DEBUGFS_ADD(aqm);
1271 DEBUGFS_ADD(airtime);
1272
1273 if (wiphy_ext_feature_isset(local->hw.wiphy,
1274 NL80211_EXT_FEATURE_AQL))
1275 DEBUGFS_ADD(aql);
1276
1277 debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir,
1278 &sta->driver_buffered_tids);
1279
1280 drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
1281 }
1282
ieee80211_sta_debugfs_remove(struct sta_info * sta)1283 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
1284 {
1285 debugfs_remove_recursive(sta->debugfs_dir);
1286 sta->debugfs_dir = NULL;
1287 }
1288
1289 #undef DEBUGFS_ADD
1290 #undef DEBUGFS_ADD_COUNTER
1291
1292 #define DEBUGFS_ADD(name) \
1293 debugfs_create_file(#name, 0400, \
1294 link_sta->debugfs_dir, link_sta, &link_sta_ ##name## _ops)
1295 #define DEBUGFS_ADD_COUNTER(name, field) \
1296 debugfs_create_ulong(#name, 0400, link_sta->debugfs_dir, &link_sta->field)
1297
ieee80211_link_sta_debugfs_add(struct link_sta_info * link_sta)1298 void ieee80211_link_sta_debugfs_add(struct link_sta_info *link_sta)
1299 {
1300 if (WARN_ON(!link_sta->sta->debugfs_dir))
1301 return;
1302
1303 /* For non-MLO, leave the files in the main directory. */
1304 if (link_sta->sta->sta.valid_links) {
1305 char link_dir_name[10];
1306
1307 snprintf(link_dir_name, sizeof(link_dir_name),
1308 "link-%d", link_sta->link_id);
1309
1310 link_sta->debugfs_dir =
1311 debugfs_create_dir(link_dir_name,
1312 link_sta->sta->debugfs_dir);
1313
1314 DEBUGFS_ADD(addr);
1315 } else {
1316 if (WARN_ON(link_sta != &link_sta->sta->deflink))
1317 return;
1318
1319 link_sta->debugfs_dir = link_sta->sta->debugfs_dir;
1320 }
1321
1322 DEBUGFS_ADD(ht_capa);
1323 DEBUGFS_ADD(vht_capa);
1324 DEBUGFS_ADD(he_capa);
1325 DEBUGFS_ADD(eht_capa);
1326
1327 DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
1328 DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
1329 }
1330
ieee80211_link_sta_debugfs_remove(struct link_sta_info * link_sta)1331 void ieee80211_link_sta_debugfs_remove(struct link_sta_info *link_sta)
1332 {
1333 if (!link_sta->debugfs_dir || !link_sta->sta->debugfs_dir) {
1334 link_sta->debugfs_dir = NULL;
1335 return;
1336 }
1337
1338 if (link_sta->debugfs_dir == link_sta->sta->debugfs_dir) {
1339 WARN_ON(link_sta != &link_sta->sta->deflink);
1340 link_sta->sta->debugfs_dir = NULL;
1341 return;
1342 }
1343
1344 debugfs_remove_recursive(link_sta->debugfs_dir);
1345 link_sta->debugfs_dir = NULL;
1346 }
1347
ieee80211_link_sta_debugfs_drv_add(struct link_sta_info * link_sta)1348 void ieee80211_link_sta_debugfs_drv_add(struct link_sta_info *link_sta)
1349 {
1350 if (WARN_ON(!link_sta->debugfs_dir))
1351 return;
1352
1353 drv_link_sta_add_debugfs(link_sta->sta->local, link_sta->sta->sdata,
1354 link_sta->pub, link_sta->debugfs_dir);
1355 }
1356
ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info * link_sta)1357 void ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info *link_sta)
1358 {
1359 if (!link_sta->debugfs_dir)
1360 return;
1361
1362 if (WARN_ON(link_sta->debugfs_dir == link_sta->sta->debugfs_dir))
1363 return;
1364
1365 /* Recreate the directory excluding the driver data */
1366 debugfs_remove_recursive(link_sta->debugfs_dir);
1367 link_sta->debugfs_dir = NULL;
1368
1369 ieee80211_link_sta_debugfs_add(link_sta);
1370 }
1371