xref: /openbmc/linux/net/mac80211/debugfs_sta.c (revision 5a0702aa)
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 - 2022 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 attributtes */
20 
21 #define STA_READ(name, field, format_string)				\
22 static ssize_t sta_ ##name## _read(struct file *file,			\
23 				   char __user *userbuf,		\
24 				   size_t count, loff_t *ppos)		\
25 {									\
26 	struct sta_info *sta = file->private_data;			\
27 	return mac80211_format_buffer(userbuf, count, ppos, 		\
28 				      format_string, sta->field);	\
29 }
30 #define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
31 
32 #define STA_OPS(name)							\
33 static const struct file_operations sta_ ##name## _ops = {		\
34 	.read = sta_##name##_read,					\
35 	.open = simple_open,						\
36 	.llseek = generic_file_llseek,					\
37 }
38 
39 #define STA_OPS_RW(name)						\
40 static const struct file_operations sta_ ##name## _ops = {		\
41 	.read = sta_##name##_read,					\
42 	.write = sta_##name##_write,					\
43 	.open = simple_open,						\
44 	.llseek = generic_file_llseek,					\
45 }
46 
47 #define STA_FILE(name, field, format)					\
48 		STA_READ_##format(name, field)				\
49 		STA_OPS(name)
50 
51 STA_FILE(aid, sta.aid, D);
52 
53 static const char * const sta_flag_names[] = {
54 #define FLAG(F) [WLAN_STA_##F] = #F
55 	FLAG(AUTH),
56 	FLAG(ASSOC),
57 	FLAG(PS_STA),
58 	FLAG(AUTHORIZED),
59 	FLAG(SHORT_PREAMBLE),
60 	FLAG(WDS),
61 	FLAG(CLEAR_PS_FILT),
62 	FLAG(MFP),
63 	FLAG(BLOCK_BA),
64 	FLAG(PS_DRIVER),
65 	FLAG(PSPOLL),
66 	FLAG(TDLS_PEER),
67 	FLAG(TDLS_PEER_AUTH),
68 	FLAG(TDLS_INITIATOR),
69 	FLAG(TDLS_CHAN_SWITCH),
70 	FLAG(TDLS_OFF_CHANNEL),
71 	FLAG(TDLS_WIDER_BW),
72 	FLAG(UAPSD),
73 	FLAG(SP),
74 	FLAG(4ADDR_EVENT),
75 	FLAG(INSERTED),
76 	FLAG(RATE_CONTROL),
77 	FLAG(TOFFSET_KNOWN),
78 	FLAG(MPSP_OWNER),
79 	FLAG(MPSP_RECIPIENT),
80 	FLAG(PS_DELIVER),
81 	FLAG(USES_ENCRYPTION),
82 	FLAG(DECAP_OFFLOAD),
83 #undef FLAG
84 };
85 
sta_flags_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)86 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
87 			      size_t count, loff_t *ppos)
88 {
89 	char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
90 	char *end = buf + sizeof(buf) - 1;
91 	struct sta_info *sta = file->private_data;
92 	unsigned int flg;
93 
94 	BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);
95 
96 	for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
97 		if (test_sta_flag(sta, flg))
98 			pos += scnprintf(pos, end - pos, "%s\n",
99 					 sta_flag_names[flg]);
100 	}
101 
102 	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
103 }
104 STA_OPS(flags);
105 
sta_num_ps_buf_frames_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)106 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
107 					  char __user *userbuf,
108 					  size_t count, loff_t *ppos)
109 {
110 	struct sta_info *sta = file->private_data;
111 	char buf[17*IEEE80211_NUM_ACS], *p = buf;
112 	int ac;
113 
114 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
115 		p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
116 			       skb_queue_len(&sta->ps_tx_buf[ac]) +
117 			       skb_queue_len(&sta->tx_filtered[ac]));
118 	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
119 }
120 STA_OPS(num_ps_buf_frames);
121 
sta_last_seq_ctrl_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)122 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
123 				      size_t count, loff_t *ppos)
124 {
125 	char buf[15*IEEE80211_NUM_TIDS], *p = buf;
126 	int i;
127 	struct sta_info *sta = file->private_data;
128 	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
129 		p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
130 			       le16_to_cpu(sta->last_seq_ctrl[i]));
131 	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
132 	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
133 }
134 STA_OPS(last_seq_ctrl);
135 
136 #define AQM_TXQ_ENTRY_LEN 130
137 
sta_aqm_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)138 static ssize_t sta_aqm_read(struct file *file, char __user *userbuf,
139 			size_t count, loff_t *ppos)
140 {
141 	struct sta_info *sta = file->private_data;
142 	struct ieee80211_local *local = sta->local;
143 	size_t bufsz = AQM_TXQ_ENTRY_LEN * (IEEE80211_NUM_TIDS + 2);
144 	char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
145 	struct txq_info *txqi;
146 	ssize_t rv;
147 	int i;
148 
149 	if (!buf)
150 		return -ENOMEM;
151 
152 	spin_lock_bh(&local->fq.lock);
153 	rcu_read_lock();
154 
155 	p += scnprintf(p,
156 		       bufsz + buf - p,
157 		       "target %uus interval %uus ecn %s\n",
158 		       codel_time_to_us(sta->cparams.target),
159 		       codel_time_to_us(sta->cparams.interval),
160 		       sta->cparams.ecn ? "yes" : "no");
161 	p += scnprintf(p,
162 		       bufsz + buf - p,
163 		       "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");
164 
165 	for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
166 		if (!sta->sta.txq[i])
167 			continue;
168 		txqi = to_txq_info(sta->sta.txq[i]);
169 		p += scnprintf(p, bufsz + buf - p,
170 			       "%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s%s)\n",
171 			       txqi->txq.tid,
172 			       txqi->txq.ac,
173 			       txqi->tin.backlog_bytes,
174 			       txqi->tin.backlog_packets,
175 			       txqi->tin.flows,
176 			       txqi->cstats.drop_count,
177 			       txqi->cstats.ecn_mark,
178 			       txqi->tin.overlimit,
179 			       txqi->tin.collisions,
180 			       txqi->tin.tx_bytes,
181 			       txqi->tin.tx_packets,
182 			       txqi->flags,
183 			       test_bit(IEEE80211_TXQ_STOP, &txqi->flags) ? "STOP" : "RUN",
184 			       test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags) ? " AMPDU" : "",
185 			       test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags) ? " NO-AMSDU" : "",
186 			       test_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ? " DIRTY" : "");
187 	}
188 
189 	rcu_read_unlock();
190 	spin_unlock_bh(&local->fq.lock);
191 
192 	rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
193 	kfree(buf);
194 	return rv;
195 }
196 STA_OPS(aqm);
197 
sta_airtime_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)198 static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
199 				size_t count, loff_t *ppos)
200 {
201 	struct sta_info *sta = file->private_data;
202 	struct ieee80211_local *local = sta->sdata->local;
203 	size_t bufsz = 400;
204 	char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
205 	u64 rx_airtime = 0, tx_airtime = 0;
206 	s32 deficit[IEEE80211_NUM_ACS];
207 	ssize_t rv;
208 	int ac;
209 
210 	if (!buf)
211 		return -ENOMEM;
212 
213 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
214 		spin_lock_bh(&local->active_txq_lock[ac]);
215 		rx_airtime += sta->airtime[ac].rx_airtime;
216 		tx_airtime += sta->airtime[ac].tx_airtime;
217 		deficit[ac] = sta->airtime[ac].deficit;
218 		spin_unlock_bh(&local->active_txq_lock[ac]);
219 	}
220 
221 	p += scnprintf(p, bufsz + buf - p,
222 		"RX: %llu us\nTX: %llu us\nWeight: %u\n"
223 		"Deficit: VO: %d us VI: %d us BE: %d us BK: %d us\n",
224 		rx_airtime, tx_airtime, sta->airtime_weight,
225 		deficit[0], deficit[1], deficit[2], deficit[3]);
226 
227 	rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
228 	kfree(buf);
229 	return rv;
230 }
231 
sta_airtime_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)232 static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
233 				 size_t count, loff_t *ppos)
234 {
235 	struct sta_info *sta = file->private_data;
236 	struct ieee80211_local *local = sta->sdata->local;
237 	int ac;
238 
239 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
240 		spin_lock_bh(&local->active_txq_lock[ac]);
241 		sta->airtime[ac].rx_airtime = 0;
242 		sta->airtime[ac].tx_airtime = 0;
243 		sta->airtime[ac].deficit = sta->airtime_weight;
244 		spin_unlock_bh(&local->active_txq_lock[ac]);
245 	}
246 
247 	return count;
248 }
249 STA_OPS_RW(airtime);
250 
sta_aql_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)251 static ssize_t sta_aql_read(struct file *file, char __user *userbuf,
252 				size_t count, loff_t *ppos)
253 {
254 	struct sta_info *sta = file->private_data;
255 	struct ieee80211_local *local = sta->sdata->local;
256 	size_t bufsz = 400;
257 	char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
258 	u32 q_depth[IEEE80211_NUM_ACS];
259 	u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS];
260 	ssize_t rv;
261 	int ac;
262 
263 	if (!buf)
264 		return -ENOMEM;
265 
266 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
267 		spin_lock_bh(&local->active_txq_lock[ac]);
268 		q_limit_l[ac] = sta->airtime[ac].aql_limit_low;
269 		q_limit_h[ac] = sta->airtime[ac].aql_limit_high;
270 		spin_unlock_bh(&local->active_txq_lock[ac]);
271 		q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending);
272 	}
273 
274 	p += scnprintf(p, bufsz + buf - p,
275 		"Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n"
276 		"Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n",
277 		q_depth[0], q_depth[1], q_depth[2], q_depth[3],
278 		q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1],
279 		q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]);
280 
281 	rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
282 	kfree(buf);
283 	return rv;
284 }
285 
sta_aql_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)286 static ssize_t sta_aql_write(struct file *file, const char __user *userbuf,
287 				 size_t count, loff_t *ppos)
288 {
289 	struct sta_info *sta = file->private_data;
290 	u32 ac, q_limit_l, q_limit_h;
291 	char _buf[100] = {}, *buf = _buf;
292 
293 	if (count > sizeof(_buf))
294 		return -EINVAL;
295 
296 	if (copy_from_user(buf, userbuf, count))
297 		return -EFAULT;
298 
299 	buf[sizeof(_buf) - 1] = '\0';
300 	if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h)
301 	    != 3)
302 		return -EINVAL;
303 
304 	if (ac >= IEEE80211_NUM_ACS)
305 		return -EINVAL;
306 
307 	sta->airtime[ac].aql_limit_low = q_limit_l;
308 	sta->airtime[ac].aql_limit_high = q_limit_h;
309 
310 	return count;
311 }
312 STA_OPS_RW(aql);
313 
314 
sta_agg_status_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)315 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
316 					size_t count, loff_t *ppos)
317 {
318 	char *buf, *p;
319 	ssize_t bufsz = 71 + IEEE80211_NUM_TIDS * 40;
320 	int i;
321 	struct sta_info *sta = file->private_data;
322 	struct tid_ampdu_rx *tid_rx;
323 	struct tid_ampdu_tx *tid_tx;
324 	ssize_t ret;
325 
326 	buf = kzalloc(bufsz, GFP_KERNEL);
327 	if (!buf)
328 		return -ENOMEM;
329 	p = buf;
330 
331 	rcu_read_lock();
332 
333 	p += scnprintf(p, bufsz + buf - p, "next dialog_token: %#02x\n",
334 			sta->ampdu_mlme.dialog_token_allocator + 1);
335 	p += scnprintf(p, bufsz + buf - p,
336 		       "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
337 
338 	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
339 		bool tid_rx_valid;
340 
341 		tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
342 		tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
343 		tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);
344 
345 		p += scnprintf(p, bufsz + buf - p, "%02d", i);
346 		p += scnprintf(p, bufsz + buf - p, "\t\t%x",
347 			       tid_rx_valid);
348 		p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
349 			       tid_rx_valid ?
350 					sta->ampdu_mlme.tid_rx_token[i] : 0);
351 		p += scnprintf(p, bufsz + buf - p, "\t%#.3x",
352 				tid_rx ? tid_rx->ssn : 0);
353 
354 		p += scnprintf(p, bufsz + buf - p, "\t\t%x", !!tid_tx);
355 		p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
356 				tid_tx ? tid_tx->dialog_token : 0);
357 		p += scnprintf(p, bufsz + buf - p, "\t%03d",
358 				tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
359 		p += scnprintf(p, bufsz + buf - p, "\n");
360 	}
361 	rcu_read_unlock();
362 
363 	ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
364 	kfree(buf);
365 	return ret;
366 }
367 
sta_agg_status_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)368 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
369 				    size_t count, loff_t *ppos)
370 {
371 	char _buf[25] = {}, *buf = _buf;
372 	struct sta_info *sta = file->private_data;
373 	bool start, tx;
374 	unsigned long tid;
375 	char *pos;
376 	int ret, timeout = 5000;
377 
378 	if (count > sizeof(_buf))
379 		return -EINVAL;
380 
381 	if (copy_from_user(buf, userbuf, count))
382 		return -EFAULT;
383 
384 	buf[sizeof(_buf) - 1] = '\0';
385 	pos = buf;
386 	buf = strsep(&pos, " ");
387 	if (!buf)
388 		return -EINVAL;
389 
390 	if (!strcmp(buf, "tx"))
391 		tx = true;
392 	else if (!strcmp(buf, "rx"))
393 		tx = false;
394 	else
395 		return -EINVAL;
396 
397 	buf = strsep(&pos, " ");
398 	if (!buf)
399 		return -EINVAL;
400 	if (!strcmp(buf, "start")) {
401 		start = true;
402 		if (!tx)
403 			return -EINVAL;
404 	} else if (!strcmp(buf, "stop")) {
405 		start = false;
406 	} else {
407 		return -EINVAL;
408 	}
409 
410 	buf = strsep(&pos, " ");
411 	if (!buf)
412 		return -EINVAL;
413 	if (sscanf(buf, "timeout=%d", &timeout) == 1) {
414 		buf = strsep(&pos, " ");
415 		if (!buf || !tx || !start)
416 			return -EINVAL;
417 	}
418 
419 	ret = kstrtoul(buf, 0, &tid);
420 	if (ret || tid >= IEEE80211_NUM_TIDS)
421 		return -EINVAL;
422 
423 	if (tx) {
424 		if (start)
425 			ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
426 							    timeout);
427 		else
428 			ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
429 	} else {
430 		__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
431 					       3, true);
432 		ret = 0;
433 	}
434 
435 	return ret ?: count;
436 }
437 STA_OPS_RW(agg_status);
438 
439 /* link sta attributes */
440 #define LINK_STA_OPS(name)						\
441 static const struct file_operations link_sta_ ##name## _ops = {		\
442 	.read = link_sta_##name##_read,					\
443 	.open = simple_open,						\
444 	.llseek = generic_file_llseek,					\
445 }
446 
link_sta_addr_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)447 static ssize_t link_sta_addr_read(struct file *file, char __user *userbuf,
448 				  size_t count, loff_t *ppos)
449 {
450 	struct link_sta_info *link_sta = file->private_data;
451 	u8 mac[3 * ETH_ALEN + 1];
452 
453 	snprintf(mac, sizeof(mac), "%pM\n", link_sta->pub->addr);
454 
455 	return simple_read_from_buffer(userbuf, count, ppos, mac, 3 * ETH_ALEN);
456 }
457 
458 LINK_STA_OPS(addr);
459 
link_sta_ht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)460 static ssize_t link_sta_ht_capa_read(struct file *file, char __user *userbuf,
461 				     size_t count, loff_t *ppos)
462 {
463 #define PRINT_HT_CAP(_cond, _str) \
464 	do { \
465 	if (_cond) \
466 			p += scnprintf(p, bufsz + buf - p, "\t" _str "\n"); \
467 	} while (0)
468 	char *buf, *p;
469 	int i;
470 	ssize_t bufsz = 512;
471 	struct link_sta_info *link_sta = file->private_data;
472 	struct ieee80211_sta_ht_cap *htc = &link_sta->pub->ht_cap;
473 	ssize_t ret;
474 
475 	buf = kzalloc(bufsz, GFP_KERNEL);
476 	if (!buf)
477 		return -ENOMEM;
478 	p = buf;
479 
480 	p += scnprintf(p, bufsz + buf - p, "ht %ssupported\n",
481 			htc->ht_supported ? "" : "not ");
482 	if (htc->ht_supported) {
483 		p += scnprintf(p, bufsz + buf - p, "cap: %#.4x\n", htc->cap);
484 
485 		PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
486 		PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
487 		PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
488 
489 		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
490 		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
491 		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
492 
493 		PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
494 		PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
495 		PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
496 		PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
497 
498 		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
499 		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
500 		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
501 		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
502 
503 		PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
504 
505 		PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
506 			     "3839 bytes");
507 		PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
508 			     "7935 bytes");
509 
510 		/*
511 		 * For beacons and probe response this would mean the BSS
512 		 * does or does not allow the usage of DSSS/CCK HT40.
513 		 * Otherwise it means the STA does or does not use
514 		 * DSSS/CCK HT40.
515 		 */
516 		PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
517 		PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
518 
519 		/* BIT(13) is reserved */
520 
521 		PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
522 
523 		PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
524 
525 		p += scnprintf(p, bufsz + buf - p, "ampdu factor/density: %d/%d\n",
526 				htc->ampdu_factor, htc->ampdu_density);
527 		p += scnprintf(p, bufsz + buf - p, "MCS mask:");
528 
529 		for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
530 			p += scnprintf(p, bufsz + buf - p, " %.2x",
531 					htc->mcs.rx_mask[i]);
532 		p += scnprintf(p, bufsz + buf - p, "\n");
533 
534 		/* If not set this is meaningless */
535 		if (le16_to_cpu(htc->mcs.rx_highest)) {
536 			p += scnprintf(p, bufsz + buf - p,
537 				       "MCS rx highest: %d Mbps\n",
538 				       le16_to_cpu(htc->mcs.rx_highest));
539 		}
540 
541 		p += scnprintf(p, bufsz + buf - p, "MCS tx params: %x\n",
542 				htc->mcs.tx_params);
543 	}
544 
545 	ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
546 	kfree(buf);
547 	return ret;
548 }
549 LINK_STA_OPS(ht_capa);
550 
link_sta_vht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)551 static ssize_t link_sta_vht_capa_read(struct file *file, char __user *userbuf,
552 				      size_t count, loff_t *ppos)
553 {
554 	char *buf, *p;
555 	struct link_sta_info *link_sta = file->private_data;
556 	struct ieee80211_sta_vht_cap *vhtc = &link_sta->pub->vht_cap;
557 	ssize_t ret;
558 	ssize_t bufsz = 512;
559 
560 	buf = kzalloc(bufsz, GFP_KERNEL);
561 	if (!buf)
562 		return -ENOMEM;
563 	p = buf;
564 
565 	p += scnprintf(p, bufsz + buf - p, "VHT %ssupported\n",
566 			vhtc->vht_supported ? "" : "not ");
567 	if (vhtc->vht_supported) {
568 		p += scnprintf(p, bufsz + buf - p, "cap: %#.8x\n",
569 			       vhtc->cap);
570 #define PFLAG(a, b)							\
571 		do {							\
572 			if (vhtc->cap & IEEE80211_VHT_CAP_ ## a)	\
573 				p += scnprintf(p, bufsz + buf - p, \
574 					       "\t\t%s\n", b);		\
575 		} while (0)
576 
577 		switch (vhtc->cap & 0x3) {
578 		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
579 			p += scnprintf(p, bufsz + buf - p,
580 				       "\t\tMAX-MPDU-3895\n");
581 			break;
582 		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
583 			p += scnprintf(p, bufsz + buf - p,
584 				       "\t\tMAX-MPDU-7991\n");
585 			break;
586 		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
587 			p += scnprintf(p, bufsz + buf - p,
588 				       "\t\tMAX-MPDU-11454\n");
589 			break;
590 		default:
591 			p += scnprintf(p, bufsz + buf - p,
592 				       "\t\tMAX-MPDU-UNKNOWN\n");
593 		}
594 		switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
595 		case 0:
596 			p += scnprintf(p, bufsz + buf - p,
597 				       "\t\t80Mhz\n");
598 			break;
599 		case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
600 			p += scnprintf(p, bufsz + buf - p,
601 				       "\t\t160Mhz\n");
602 			break;
603 		case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
604 			p += scnprintf(p, bufsz + buf - p,
605 				       "\t\t80+80Mhz\n");
606 			break;
607 		default:
608 			p += scnprintf(p, bufsz + buf - p,
609 				       "\t\tUNKNOWN-MHZ: 0x%x\n",
610 				       (vhtc->cap >> 2) & 0x3);
611 		}
612 		PFLAG(RXLDPC, "RXLDPC");
613 		PFLAG(SHORT_GI_80, "SHORT-GI-80");
614 		PFLAG(SHORT_GI_160, "SHORT-GI-160");
615 		PFLAG(TXSTBC, "TXSTBC");
616 		p += scnprintf(p, bufsz + buf - p,
617 			       "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
618 		PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
619 		PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
620 		p += scnprintf(p, bufsz + buf - p,
621 			"\t\tBEAMFORMEE-STS: 0x%x\n",
622 			(vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
623 			IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
624 		p += scnprintf(p, bufsz + buf - p,
625 			"\t\tSOUNDING-DIMENSIONS: 0x%x\n",
626 			(vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
627 			>> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
628 		PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
629 		PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
630 		PFLAG(VHT_TXOP_PS, "TXOP-PS");
631 		PFLAG(HTC_VHT, "HTC-VHT");
632 		p += scnprintf(p, bufsz + buf - p,
633 			"\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
634 			(vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
635 			IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
636 		PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
637 		      "LINK-ADAPTATION-VHT-UNSOL-MFB");
638 		p += scnprintf(p, bufsz + buf - p,
639 			"\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
640 			(vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
641 		PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
642 		PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
643 
644 		p += scnprintf(p, bufsz + buf - p, "RX MCS: %.4x\n",
645 			       le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
646 		if (vhtc->vht_mcs.rx_highest)
647 			p += scnprintf(p, bufsz + buf - p,
648 				       "MCS RX highest: %d Mbps\n",
649 				       le16_to_cpu(vhtc->vht_mcs.rx_highest));
650 		p += scnprintf(p, bufsz + buf - p, "TX MCS: %.4x\n",
651 			       le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
652 		if (vhtc->vht_mcs.tx_highest)
653 			p += scnprintf(p, bufsz + buf - p,
654 				       "MCS TX highest: %d Mbps\n",
655 				       le16_to_cpu(vhtc->vht_mcs.tx_highest));
656 #undef PFLAG
657 	}
658 
659 	ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
660 	kfree(buf);
661 	return ret;
662 }
663 LINK_STA_OPS(vht_capa);
664 
link_sta_he_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)665 static ssize_t link_sta_he_capa_read(struct file *file, char __user *userbuf,
666 				     size_t count, loff_t *ppos)
667 {
668 	char *buf, *p;
669 	size_t buf_sz = PAGE_SIZE;
670 	struct link_sta_info *link_sta = file->private_data;
671 	struct ieee80211_sta_he_cap *hec = &link_sta->pub->he_cap;
672 	struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp;
673 	u8 ppe_size;
674 	u8 *cap;
675 	int i;
676 	ssize_t ret;
677 
678 	buf = kmalloc(buf_sz, GFP_KERNEL);
679 	if (!buf)
680 		return -ENOMEM;
681 	p = buf;
682 
683 	p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n",
684 		       hec->has_he ? "" : "not ");
685 	if (!hec->has_he)
686 		goto out;
687 
688 	cap = hec->he_cap_elem.mac_cap_info;
689 	p += scnprintf(p, buf_sz + buf - p,
690 		       "MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
691 		       cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]);
692 
693 #define PRINT(fmt, ...)							\
694 	p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n",		\
695 		       ##__VA_ARGS__)
696 
697 #define PFLAG(t, n, a, b)						\
698 	do {								\
699 		if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a)		\
700 			PRINT("%s", b);					\
701 	} while (0)
702 
703 #define PFLAG_RANGE(t, i, n, s, m, off, fmt)				\
704 	do {								\
705 		u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK;	\
706 		u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off;	\
707 		PRINT(fmt, (s << idx) + (m * idx));			\
708 	} while (0)
709 
710 #define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b)		\
711 	do {								\
712 		if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) {	\
713 			PRINT("%s", b);					\
714 			break;						\
715 		}							\
716 		PFLAG_RANGE(t, i, n, s, m, off, fmt);			\
717 	} while (0)
718 
719 	PFLAG(MAC, 0, HTC_HE, "HTC-HE");
720 	PFLAG(MAC, 0, TWT_REQ, "TWT-REQ");
721 	PFLAG(MAC, 0, TWT_RES, "TWT-RES");
722 	PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0,
723 			    "DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP");
724 	PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0,
725 			    "MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED");
726 
727 	PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1,
728 			    "MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED");
729 	PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0,
730 			    "TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN");
731 	PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1,
732 		    "MULTI-TID-AGG-RX-QOS-%d");
733 
734 	if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) {
735 		switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) {
736 		case 0:
737 			PRINT("LINK-ADAPTATION-NO-FEEDBACK");
738 			break;
739 		case 1:
740 			PRINT("LINK-ADAPTATION-RESERVED");
741 			break;
742 		case 2:
743 			PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK");
744 			break;
745 		case 3:
746 			PRINT("LINK-ADAPTATION-BOTH");
747 			break;
748 		}
749 	}
750 
751 	PFLAG(MAC, 2, ALL_ACK, "ALL-ACK");
752 	PFLAG(MAC, 2, TRS, "TRS");
753 	PFLAG(MAC, 2, BSR, "BSR");
754 	PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT");
755 	PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP");
756 	PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING");
757 	PFLAG(MAC, 2, ACK_EN, "ACK-EN");
758 
759 	PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL");
760 	PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA");
761 
762 	switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) {
763 	case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_0:
764 		PRINT("MAX-AMPDU-LEN-EXP-USE-EXT-0");
765 		break;
766 	case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_1:
767 		PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-1");
768 		break;
769 	case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_2:
770 		PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-2");
771 		break;
772 	case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3:
773 		PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-3");
774 		break;
775 	}
776 
777 	PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG");
778 	PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED");
779 	PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS");
780 
781 	PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG");
782 	PFLAG(MAC, 4, QTP, "QTP");
783 	PFLAG(MAC, 4, BQR, "BQR");
784 	PFLAG(MAC, 4, PSR_RESP, "PSR-RESP");
785 	PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP");
786 	PFLAG(MAC, 4, OPS, "OPS");
787 	PFLAG(MAC, 4, AMSDU_IN_AMPDU, "AMSDU-IN-AMPDU");
788 
789 	PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7);
790 
791 	PFLAG(MAC, 5, SUBCHAN_SELECTIVE_TRANSMISSION,
792 	      "SUBCHAN-SELECTIVE-TRANSMISSION");
793 	PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU");
794 	PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX");
795 	PFLAG(MAC, 5, HE_DYNAMIC_SM_PS, "HE-DYNAMIC-SM-PS");
796 	PFLAG(MAC, 5, PUNCTURED_SOUNDING, "PUNCTURED-SOUNDING");
797 	PFLAG(MAC, 5, HT_VHT_TRIG_FRAME_RX, "HT-VHT-TRIG-FRAME-RX");
798 
799 	cap = hec->he_cap_elem.phy_cap_info;
800 	p += scnprintf(p, buf_sz + buf - p,
801 		       "PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
802 		       cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6],
803 		       cap[7], cap[8], cap[9], cap[10]);
804 
805 	PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G,
806 	      "CHANNEL-WIDTH-SET-40MHZ-IN-2G");
807 	PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G,
808 	      "CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G");
809 	PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G,
810 	      "CHANNEL-WIDTH-SET-160MHZ-IN-5G");
811 	PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
812 	      "CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G");
813 	PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G,
814 	      "CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G");
815 	PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G,
816 	      "CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G");
817 
818 	switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) {
819 	case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ:
820 		PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ");
821 		break;
822 	case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ:
823 		PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ");
824 		break;
825 	case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ:
826 		PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ");
827 		break;
828 	case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ:
829 		PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ");
830 		break;
831 	}
832 
833 	PFLAG(PHY, 1, DEVICE_CLASS_A,
834 	      "IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A");
835 	PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD,
836 	      "LDPC-CODING-IN-PAYLOAD");
837 	PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US,
838 	      "HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US");
839 	PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3);
840 
841 	PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US");
842 	PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ");
843 	PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ");
844 	PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX");
845 	PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX");
846 	PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO");
847 	PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO");
848 
849 	switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) {
850 	case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM:
851 		PRINT("DCM-MAX-CONST-TX-NO-DCM");
852 		break;
853 	case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK:
854 		PRINT("DCM-MAX-CONST-TX-BPSK");
855 		break;
856 	case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK:
857 		PRINT("DCM-MAX-CONST-TX-QPSK");
858 		break;
859 	case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM:
860 		PRINT("DCM-MAX-CONST-TX-16-QAM");
861 		break;
862 	}
863 
864 	PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1");
865 	PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2");
866 
867 	switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) {
868 	case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM:
869 		PRINT("DCM-MAX-CONST-RX-NO-DCM");
870 		break;
871 	case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK:
872 		PRINT("DCM-MAX-CONST-RX-BPSK");
873 		break;
874 	case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK:
875 		PRINT("DCM-MAX-CONST-RX-QPSK");
876 		break;
877 	case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM:
878 		PRINT("DCM-MAX-CONST-RX-16-QAM");
879 		break;
880 	}
881 
882 	PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1");
883 	PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2");
884 	PFLAG(PHY, 3, RX_PARTIAL_BW_SU_IN_20MHZ_MU,
885 	      "RX-PARTIAL-BW-SU-IN-20MHZ-MU");
886 	PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER");
887 
888 	PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE");
889 	PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER");
890 
891 	PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4,
892 		    "BEAMFORMEE-MAX-STS-UNDER-%d");
893 	PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4,
894 		    "BEAMFORMEE-MAX-STS-ABOVE-%d");
895 
896 	PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1,
897 		    "NUM-SND-DIM-UNDER-80MHZ-%d");
898 	PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1,
899 		    "NUM-SND-DIM-ABOVE-80MHZ-%d");
900 	PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK");
901 	PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK");
902 
903 	PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU");
904 	PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU");
905 	PFLAG(PHY, 6, TRIG_SU_BEAMFORMING_FB, "TRIG-SU-BEAMFORMING-FB");
906 	PFLAG(PHY, 6, TRIG_MU_BEAMFORMING_PARTIAL_BW_FB,
907 	      "MU-BEAMFORMING-PARTIAL-BW-FB");
908 	PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB");
909 	PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE");
910 	PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO,
911 	      "PARTIAL-BANDWIDTH-DL-MUMIMO");
912 	PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT");
913 
914 	PFLAG(PHY, 7, PSR_BASED_SR, "PSR-BASED-SR");
915 	PFLAG(PHY, 7, POWER_BOOST_FACTOR_SUPP, "POWER-BOOST-FACTOR-SUPP");
916 	PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI,
917 	      "HE-SU-MU-PPDU-4XLTF-AND-08-US-GI");
918 	PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d");
919 	PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ");
920 	PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ");
921 
922 	PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI,
923 	      "HE-ER-SU-PPDU-4XLTF-AND-08-US-GI");
924 	PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G,
925 	      "20MHZ-IN-40MHZ-HE-PPDU-IN-2G");
926 	PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU");
927 	PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU");
928 	PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI,
929 	      "HE-ER-SU-1XLTF-AND-08-US-GI");
930 	PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF,
931 	      "MIDAMBLE-RX-TX-2X-AND-1XLTF");
932 
933 	switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK) {
934 	case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242:
935 		PRINT("DCM-MAX-RU-242");
936 		break;
937 	case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484:
938 		PRINT("DCM-MAX-RU-484");
939 		break;
940 	case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996:
941 		PRINT("DCM-MAX-RU-996");
942 		break;
943 	case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996:
944 		PRINT("DCM-MAX-RU-2x996");
945 		break;
946 	}
947 
948 	PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM,
949 	      "LONGER-THAN-16-SIGB-OFDM-SYM");
950 	PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK,
951 	      "NON-TRIGGERED-CQI-FEEDBACK");
952 	PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU,
953 	      "TX-1024-QAM-LESS-THAN-242-TONE-RU");
954 	PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU,
955 	      "RX-1024-QAM-LESS-THAN-242-TONE-RU");
956 	PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB,
957 	      "RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB");
958 	PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB,
959 	      "RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB");
960 
961 	switch (u8_get_bits(cap[9],
962 			    IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK)) {
963 	case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US:
964 		PRINT("NOMINAL-PACKET-PADDING-0US");
965 		break;
966 	case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US:
967 		PRINT("NOMINAL-PACKET-PADDING-8US");
968 		break;
969 	case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US:
970 		PRINT("NOMINAL-PACKET-PADDING-16US");
971 		break;
972 	}
973 
974 #undef PFLAG_RANGE_DEFAULT
975 #undef PFLAG_RANGE
976 #undef PFLAG
977 
978 #define PRINT_NSS_SUPP(f, n)						\
979 	do {								\
980 		int _i;							\
981 		u16 v = le16_to_cpu(nss->f);				\
982 		p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v);	\
983 		for (_i = 0; _i < 8; _i += 2) {				\
984 			switch ((v >> _i) & 0x3) {			\
985 			case 0:						\
986 				PRINT(n "-%d-SUPPORT-0-7", _i / 2);	\
987 				break;					\
988 			case 1:						\
989 				PRINT(n "-%d-SUPPORT-0-9", _i / 2);	\
990 				break;					\
991 			case 2:						\
992 				PRINT(n "-%d-SUPPORT-0-11", _i / 2);	\
993 				break;					\
994 			case 3:						\
995 				PRINT(n "-%d-NOT-SUPPORTED", _i / 2);	\
996 				break;					\
997 			}						\
998 		}							\
999 	} while (0)
1000 
1001 	PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80");
1002 	PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80");
1003 
1004 	if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) {
1005 		PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160");
1006 		PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160");
1007 	}
1008 
1009 	if (cap[0] &
1010 	    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
1011 		PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80");
1012 		PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80");
1013 	}
1014 
1015 #undef PRINT_NSS_SUPP
1016 #undef PRINT
1017 
1018 	if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT))
1019 		goto out;
1020 
1021 	p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x",
1022 		       hec->ppe_thres[0]);
1023 
1024 	ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap);
1025 	for (i = 1; i < ppe_size; i++) {
1026 		p += scnprintf(p, buf_sz + buf - p, " %#.2x",
1027 			       hec->ppe_thres[i]);
1028 	}
1029 	p += scnprintf(p, buf_sz + buf - p, "\n");
1030 
1031 out:
1032 	ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1033 	kfree(buf);
1034 	return ret;
1035 }
1036 LINK_STA_OPS(he_capa);
1037 
link_sta_eht_capa_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)1038 static ssize_t link_sta_eht_capa_read(struct file *file, char __user *userbuf,
1039 				      size_t count, loff_t *ppos)
1040 {
1041 	char *buf, *p;
1042 	size_t buf_sz = PAGE_SIZE;
1043 	struct link_sta_info *link_sta = file->private_data;
1044 	struct ieee80211_sta_eht_cap *bec = &link_sta->pub->eht_cap;
1045 	struct ieee80211_eht_cap_elem_fixed *fixed = &bec->eht_cap_elem;
1046 	struct ieee80211_eht_mcs_nss_supp *nss = &bec->eht_mcs_nss_supp;
1047 	u8 *cap;
1048 	int i;
1049 	ssize_t ret;
1050 	static const char *mcs_desc[] = { "0-7", "8-9", "10-11", "12-13"};
1051 
1052 	buf = kmalloc(buf_sz, GFP_KERNEL);
1053 	if (!buf)
1054 		return -ENOMEM;
1055 	p = buf;
1056 
1057 	p += scnprintf(p, buf_sz + buf - p, "EHT %ssupported\n",
1058 		       bec->has_eht ? "" : "not ");
1059 	if (!bec->has_eht)
1060 		goto out;
1061 
1062 	p += scnprintf(p, buf_sz + buf - p,
1063 		       "MAC-CAP: %#.2x %#.2x\n",
1064 		       fixed->mac_cap_info[0], fixed->mac_cap_info[1]);
1065 	p += scnprintf(p, buf_sz + buf - p,
1066 		       "PHY-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
1067 		       fixed->phy_cap_info[0], fixed->phy_cap_info[1],
1068 		       fixed->phy_cap_info[2], fixed->phy_cap_info[3],
1069 		       fixed->phy_cap_info[4], fixed->phy_cap_info[5],
1070 		       fixed->phy_cap_info[6], fixed->phy_cap_info[7],
1071 		       fixed->phy_cap_info[8]);
1072 
1073 #define PRINT(fmt, ...)							\
1074 	p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n",		\
1075 		       ##__VA_ARGS__)
1076 
1077 #define PFLAG(t, n, a, b)						\
1078 	do {								\
1079 		if (cap[n] & IEEE80211_EHT_##t##_CAP##n##_##a)		\
1080 			PRINT("%s", b);					\
1081 	} while (0)
1082 
1083 	cap = fixed->mac_cap_info;
1084 	PFLAG(MAC, 0, EPCS_PRIO_ACCESS, "EPCS-PRIO-ACCESS");
1085 	PFLAG(MAC, 0, OM_CONTROL, "OM-CONTROL");
1086 	PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE1, "TRIG-TXOP-SHARING-MODE1");
1087 	PFLAG(MAC, 0, TRIG_TXOP_SHARING_MODE2, "TRIG-TXOP-SHARING-MODE2");
1088 	PFLAG(MAC, 0, RESTRICTED_TWT, "RESTRICTED-TWT");
1089 	PFLAG(MAC, 0, SCS_TRAFFIC_DESC, "SCS-TRAFFIC-DESC");
1090 	switch ((cap[0] & 0xc0) >> 6) {
1091 	case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_3895:
1092 		PRINT("MAX-MPDU-LEN: 3985");
1093 		break;
1094 	case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991:
1095 		PRINT("MAX-MPDU-LEN: 7991");
1096 		break;
1097 	case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454:
1098 		PRINT("MAX-MPDU-LEN: 11454");
1099 		break;
1100 	}
1101 
1102 	cap = fixed->phy_cap_info;
1103 	PFLAG(PHY, 0, 320MHZ_IN_6GHZ, "320MHZ-IN-6GHZ");
1104 	PFLAG(PHY, 0, 242_TONE_RU_GT20MHZ, "242-TONE-RU-GT20MHZ");
1105 	PFLAG(PHY, 0, NDP_4_EHT_LFT_32_GI, "NDP-4-EHT-LFT-32-GI");
1106 	PFLAG(PHY, 0, PARTIAL_BW_UL_MU_MIMO, "PARTIAL-BW-UL-MU-MIMO");
1107 	PFLAG(PHY, 0, SU_BEAMFORMER, "SU-BEAMFORMER");
1108 	PFLAG(PHY, 0, SU_BEAMFORMEE, "SU-BEAMFORMEE");
1109 	i = cap[0] >> 7;
1110 	i |= (cap[1] & 0x3) << 1;
1111 	PRINT("BEAMFORMEE-80-NSS: %i", i);
1112 	PRINT("BEAMFORMEE-160-NSS: %i", (cap[1] >> 2) & 0x7);
1113 	PRINT("BEAMFORMEE-320-NSS: %i", (cap[1] >> 5) & 0x7);
1114 	PRINT("SOUNDING-DIM-80-NSS: %i", (cap[2] & 0x7));
1115 	PRINT("SOUNDING-DIM-160-NSS: %i", (cap[2] >> 3) & 0x7);
1116 	i = cap[2] >> 6;
1117 	i |= (cap[3] & 0x1) << 3;
1118 	PRINT("SOUNDING-DIM-320-NSS: %i", i);
1119 
1120 	PFLAG(PHY, 3, NG_16_SU_FEEDBACK, "NG-16-SU-FEEDBACK");
1121 	PFLAG(PHY, 3, NG_16_MU_FEEDBACK, "NG-16-MU-FEEDBACK");
1122 	PFLAG(PHY, 3, CODEBOOK_4_2_SU_FDBK, "CODEBOOK-4-2-SU-FDBK");
1123 	PFLAG(PHY, 3, CODEBOOK_7_5_MU_FDBK, "CODEBOOK-7-5-MU-FDBK");
1124 	PFLAG(PHY, 3, TRIG_SU_BF_FDBK, "TRIG-SU-BF-FDBK");
1125 	PFLAG(PHY, 3, TRIG_MU_BF_PART_BW_FDBK, "TRIG-MU-BF-PART-BW-FDBK");
1126 	PFLAG(PHY, 3, TRIG_CQI_FDBK, "TRIG-CQI-FDBK");
1127 
1128 	PFLAG(PHY, 4, PART_BW_DL_MU_MIMO, "PART-BW-DL-MU-MIMO");
1129 	PFLAG(PHY, 4, PSR_SR_SUPP, "PSR-SR-SUPP");
1130 	PFLAG(PHY, 4, POWER_BOOST_FACT_SUPP, "POWER-BOOST-FACT-SUPP");
1131 	PFLAG(PHY, 4, EHT_MU_PPDU_4_EHT_LTF_08_GI, "EHT-MU-PPDU-4-EHT-LTF-08-GI");
1132 	PRINT("MAX_NC: %i", cap[4] >> 4);
1133 
1134 	PFLAG(PHY, 5, NON_TRIG_CQI_FEEDBACK, "NON-TRIG-CQI-FEEDBACK");
1135 	PFLAG(PHY, 5, TX_LESS_242_TONE_RU_SUPP, "TX-LESS-242-TONE-RU-SUPP");
1136 	PFLAG(PHY, 5, RX_LESS_242_TONE_RU_SUPP, "RX-LESS-242-TONE-RU-SUPP");
1137 	PFLAG(PHY, 5, PPE_THRESHOLD_PRESENT, "PPE_THRESHOLD_PRESENT");
1138 	switch (cap[5] >> 4 & 0x3) {
1139 	case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_0US:
1140 		PRINT("NOMINAL_PKT_PAD: 0us");
1141 		break;
1142 	case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_8US:
1143 		PRINT("NOMINAL_PKT_PAD: 8us");
1144 		break;
1145 	case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_16US:
1146 		PRINT("NOMINAL_PKT_PAD: 16us");
1147 		break;
1148 	case IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_20US:
1149 		PRINT("NOMINAL_PKT_PAD: 20us");
1150 		break;
1151 	}
1152 	i = cap[5] >> 6;
1153 	i |= cap[6] & 0x7;
1154 	PRINT("MAX-NUM-SUPP-EHT-LTF: %i", i);
1155 	PFLAG(PHY, 5, SUPP_EXTRA_EHT_LTF, "SUPP-EXTRA-EHT-LTF");
1156 
1157 	i = (cap[6] >> 3) & 0xf;
1158 	PRINT("MCS15-SUPP-MASK: %i", i);
1159 	PFLAG(PHY, 6, EHT_DUP_6GHZ_SUPP, "EHT-DUP-6GHZ-SUPP");
1160 
1161 	PFLAG(PHY, 7, 20MHZ_STA_RX_NDP_WIDER_BW, "20MHZ-STA-RX-NDP-WIDER-BW");
1162 	PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_80MHZ, "NON-OFDMA-UL-MU-MIMO-80MHZ");
1163 	PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_160MHZ, "NON-OFDMA-UL-MU-MIMO-160MHZ");
1164 	PFLAG(PHY, 7, NON_OFDMA_UL_MU_MIMO_320MHZ, "NON-OFDMA-UL-MU-MIMO-320MHZ");
1165 	PFLAG(PHY, 7, MU_BEAMFORMER_80MHZ, "MU-BEAMFORMER-80MHZ");
1166 	PFLAG(PHY, 7, MU_BEAMFORMER_160MHZ, "MU-BEAMFORMER-160MHZ");
1167 	PFLAG(PHY, 7, MU_BEAMFORMER_320MHZ, "MU-BEAMFORMER-320MHZ");
1168 	PFLAG(PHY, 7, TB_SOUNDING_FDBK_RATE_LIMIT, "TB-SOUNDING-FDBK-RATE-LIMIT");
1169 
1170 	PFLAG(PHY, 8, RX_1024QAM_WIDER_BW_DL_OFDMA, "RX-1024QAM-WIDER-BW-DL-OFDMA");
1171 	PFLAG(PHY, 8, RX_4096QAM_WIDER_BW_DL_OFDMA, "RX-4096QAM-WIDER-BW-DL-OFDMA");
1172 
1173 #undef PFLAG
1174 
1175 	PRINT(""); /* newline */
1176 	if (!(link_sta->pub->he_cap.he_cap_elem.phy_cap_info[0] &
1177 	      IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) {
1178 		u8 *mcs_vals = (u8 *)(&nss->only_20mhz);
1179 
1180 		for (i = 0; i < 4; i++)
1181 			PRINT("EHT bw=20 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1182 			      mcs_desc[i],
1183 			      mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1184 	} else {
1185 		u8 *mcs_vals = (u8 *)(&nss->bw._80);
1186 
1187 		for (i = 0; i < 3; i++)
1188 			PRINT("EHT bw <= 80 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1189 			      mcs_desc[i + 1],
1190 			      mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1191 
1192 		mcs_vals = (u8 *)(&nss->bw._160);
1193 		for (i = 0; i < 3; i++)
1194 			PRINT("EHT bw <= 160 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1195 			      mcs_desc[i + 1],
1196 			      mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1197 
1198 		mcs_vals = (u8 *)(&nss->bw._320);
1199 		for (i = 0; i < 3; i++)
1200 			PRINT("EHT bw <= 320 MHz, max NSS for MCS %s: Rx=%u, Tx=%u",
1201 			      mcs_desc[i + 1],
1202 			      mcs_vals[i] & 0xf, mcs_vals[i] >> 4);
1203 	}
1204 
1205 	if (cap[5] & IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) {
1206 		u8 ppe_size = ieee80211_eht_ppe_size(bec->eht_ppe_thres[0], cap);
1207 
1208 		p += scnprintf(p, buf_sz + buf - p, "EHT PPE Thresholds: ");
1209 		for (i = 0; i < ppe_size; i++)
1210 			p += scnprintf(p, buf_sz + buf - p, "0x%02x ",
1211 				       bec->eht_ppe_thres[i]);
1212 		PRINT(""); /* newline */
1213 	}
1214 
1215 out:
1216 	ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
1217 	kfree(buf);
1218 	return ret;
1219 }
1220 LINK_STA_OPS(eht_capa);
1221 
1222 #define DEBUGFS_ADD(name) \
1223 	debugfs_create_file(#name, 0400, \
1224 		sta->debugfs_dir, sta, &sta_ ##name## _ops)
1225 
1226 #define DEBUGFS_ADD_COUNTER(name, field)				\
1227 	debugfs_create_ulong(#name, 0400, sta->debugfs_dir, &sta->field);
1228 
ieee80211_sta_debugfs_add(struct sta_info * sta)1229 void ieee80211_sta_debugfs_add(struct sta_info *sta)
1230 {
1231 	struct ieee80211_local *local = sta->local;
1232 	struct ieee80211_sub_if_data *sdata = sta->sdata;
1233 	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
1234 	u8 mac[3*ETH_ALEN];
1235 
1236 	if (!stations_dir)
1237 		return;
1238 
1239 	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
1240 
1241 	/*
1242 	 * This might fail due to a race condition:
1243 	 * When mac80211 unlinks a station, the debugfs entries
1244 	 * remain, but it is already possible to link a new
1245 	 * station with the same address which triggers adding
1246 	 * it to debugfs; therefore, if the old station isn't
1247 	 * destroyed quickly enough the old station's debugfs
1248 	 * dir might still be around.
1249 	 */
1250 	sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
1251 
1252 	DEBUGFS_ADD(flags);
1253 	DEBUGFS_ADD(aid);
1254 	DEBUGFS_ADD(num_ps_buf_frames);
1255 	DEBUGFS_ADD(last_seq_ctrl);
1256 	DEBUGFS_ADD(agg_status);
1257 	/* FIXME: Kept here as the statistics are only done on the deflink */
1258 	DEBUGFS_ADD_COUNTER(tx_filtered, deflink.status_stats.filtered);
1259 
1260 	DEBUGFS_ADD(aqm);
1261 	DEBUGFS_ADD(airtime);
1262 
1263 	if (wiphy_ext_feature_isset(local->hw.wiphy,
1264 				    NL80211_EXT_FEATURE_AQL))
1265 		DEBUGFS_ADD(aql);
1266 
1267 	debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir,
1268 			   &sta->driver_buffered_tids);
1269 
1270 	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
1271 }
1272 
ieee80211_sta_debugfs_remove(struct sta_info * sta)1273 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
1274 {
1275 	debugfs_remove_recursive(sta->debugfs_dir);
1276 	sta->debugfs_dir = NULL;
1277 }
1278 
1279 #undef DEBUGFS_ADD
1280 #undef DEBUGFS_ADD_COUNTER
1281 
1282 #define DEBUGFS_ADD(name) \
1283 	debugfs_create_file(#name, 0400, \
1284 		link_sta->debugfs_dir, link_sta, &link_sta_ ##name## _ops)
1285 #define DEBUGFS_ADD_COUNTER(name, field)				\
1286 	debugfs_create_ulong(#name, 0400, link_sta->debugfs_dir, &link_sta->field)
1287 
ieee80211_link_sta_debugfs_add(struct link_sta_info * link_sta)1288 void ieee80211_link_sta_debugfs_add(struct link_sta_info *link_sta)
1289 {
1290 	if (WARN_ON(!link_sta->sta->debugfs_dir))
1291 		return;
1292 
1293 	/* For non-MLO, leave the files in the main directory. */
1294 	if (link_sta->sta->sta.valid_links) {
1295 		char link_dir_name[10];
1296 
1297 		snprintf(link_dir_name, sizeof(link_dir_name),
1298 			 "link-%d", link_sta->link_id);
1299 
1300 		link_sta->debugfs_dir =
1301 			debugfs_create_dir(link_dir_name,
1302 					   link_sta->sta->debugfs_dir);
1303 
1304 		DEBUGFS_ADD(addr);
1305 	} else {
1306 		if (WARN_ON(link_sta != &link_sta->sta->deflink))
1307 			return;
1308 
1309 		link_sta->debugfs_dir = link_sta->sta->debugfs_dir;
1310 	}
1311 
1312 	DEBUGFS_ADD(ht_capa);
1313 	DEBUGFS_ADD(vht_capa);
1314 	DEBUGFS_ADD(he_capa);
1315 	DEBUGFS_ADD(eht_capa);
1316 
1317 	DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
1318 	DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
1319 }
1320 
ieee80211_link_sta_debugfs_remove(struct link_sta_info * link_sta)1321 void ieee80211_link_sta_debugfs_remove(struct link_sta_info *link_sta)
1322 {
1323 	if (!link_sta->debugfs_dir || !link_sta->sta->debugfs_dir) {
1324 		link_sta->debugfs_dir = NULL;
1325 		return;
1326 	}
1327 
1328 	if (link_sta->debugfs_dir == link_sta->sta->debugfs_dir) {
1329 		WARN_ON(link_sta != &link_sta->sta->deflink);
1330 		link_sta->sta->debugfs_dir = NULL;
1331 		return;
1332 	}
1333 
1334 	debugfs_remove_recursive(link_sta->debugfs_dir);
1335 	link_sta->debugfs_dir = NULL;
1336 }
1337 
ieee80211_link_sta_debugfs_drv_add(struct link_sta_info * link_sta)1338 void ieee80211_link_sta_debugfs_drv_add(struct link_sta_info *link_sta)
1339 {
1340 	if (WARN_ON(!link_sta->debugfs_dir))
1341 		return;
1342 
1343 	drv_link_sta_add_debugfs(link_sta->sta->local, link_sta->sta->sdata,
1344 				 link_sta->pub, link_sta->debugfs_dir);
1345 }
1346 
ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info * link_sta)1347 void ieee80211_link_sta_debugfs_drv_remove(struct link_sta_info *link_sta)
1348 {
1349 	if (!link_sta->debugfs_dir)
1350 		return;
1351 
1352 	if (WARN_ON(link_sta->debugfs_dir == link_sta->sta->debugfs_dir))
1353 		return;
1354 
1355 	/* Recreate the directory excluding the driver data */
1356 	debugfs_remove_recursive(link_sta->debugfs_dir);
1357 	link_sta->debugfs_dir = NULL;
1358 
1359 	ieee80211_link_sta_debugfs_add(link_sta);
1360 }
1361