summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c
blob: 5c8a65de0e775a2327d392f617c4433bdd096f6d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include "mvm.h"
#include "debugfs.h"

static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
				 struct ieee80211_vif *vif,
				 enum iwl_dbgfs_pm_mask param, int val)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;

	dbgfs_pm->mask |= param;

	switch (param) {
	case MVM_DEBUGFS_PM_KEEP_ALIVE: {
		int dtimper = vif->bss_conf.dtim_period ?: 1;
		int dtimper_msec = dtimper * vif->bss_conf.beacon_int;

		IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
		if (val * MSEC_PER_SEC < 3 * dtimper_msec)
			IWL_WARN(mvm,
				 "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
				 val * MSEC_PER_SEC, 3 * dtimper_msec);
		dbgfs_pm->keep_alive_seconds = val;
		break;
	}
	case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
		IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
				val ? "enabled" : "disabled");
		dbgfs_pm->skip_over_dtim = val;
		break;
	case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
		IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
		dbgfs_pm->skip_dtim_periods = val;
		break;
	case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
		IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
		dbgfs_pm->rx_data_timeout = val;
		break;
	case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
		IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
		dbgfs_pm->tx_data_timeout = val;
		break;
	case MVM_DEBUGFS_PM_LPRX_ENA:
		IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
		dbgfs_pm->lprx_ena = val;
		break;
	case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
		IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
		dbgfs_pm->lprx_rssi_threshold = val;
		break;
	case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
		IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
		dbgfs_pm->snooze_ena = val;
		break;
	case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING:
		IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val);
		dbgfs_pm->uapsd_misbehaving = val;
		break;
	case MVM_DEBUGFS_PM_USE_PS_POLL:
		IWL_DEBUG_POWER(mvm, "use_ps_poll=%d\n", val);
		dbgfs_pm->use_ps_poll = val;
		break;
	}
}

static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
					 size_t count, loff_t *ppos)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm *mvm = mvmvif->mvm;
	enum iwl_dbgfs_pm_mask param;
	int val, ret;

	if (!strncmp("keep_alive=", buf, 11)) {
		if (sscanf(buf + 11, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_KEEP_ALIVE;
	} else if (!strncmp("skip_over_dtim=", buf, 15)) {
		if (sscanf(buf + 15, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
	} else if (!strncmp("skip_dtim_periods=", buf, 18)) {
		if (sscanf(buf + 18, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
	} else if (!strncmp("rx_data_timeout=", buf, 16)) {
		if (sscanf(buf + 16, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
	} else if (!strncmp("tx_data_timeout=", buf, 16)) {
		if (sscanf(buf + 16, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
	} else if (!strncmp("lprx=", buf, 5)) {
		if (sscanf(buf + 5, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_LPRX_ENA;
	} else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
		if (sscanf(buf + 20, "%d", &val) != 1)
			return -EINVAL;
		if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
		    POWER_LPRX_RSSI_THRESHOLD_MIN)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
	} else if (!strncmp("snooze_enable=", buf, 14)) {
		if (sscanf(buf + 14, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
	} else if (!strncmp("uapsd_misbehaving=", buf, 18)) {
		if (sscanf(buf + 18, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING;
	} else if (!strncmp("use_ps_poll=", buf, 12)) {
		if (sscanf(buf + 12, "%d", &val) != 1)
			return -EINVAL;
		param = MVM_DEBUGFS_PM_USE_PS_POLL;
	} else {
		return -EINVAL;
	}

	mutex_lock(&mvm->mutex);
	iwl_dbgfs_update_pm(mvm, vif, param, val);
	ret = iwl_mvm_power_update_mac(mvm);
	mutex_unlock(&mvm->mutex);

	return ret ?: count;
}

static ssize_t iwl_dbgfs_tx_pwr_lmt_read(struct file *file,
					 char __user *user_buf,
					 size_t count, loff_t *ppos)
{
	struct ieee80211_vif *vif = file->private_data;
	char buf[64];
	int bufsz = sizeof(buf);
	int pos;

	pos = scnprintf(buf, bufsz, "bss limit = %d\n",
			vif->bss_conf.txpower);

	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos)
{
	struct ieee80211_vif *vif = file->private_data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm *mvm = mvmvif->mvm;
	char buf[512];
	int bufsz = sizeof(buf);
	int pos;

	pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz);

	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
					 char __user *user_buf,
					 size_t count, loff_t *ppos)
{
	struct ieee80211_vif *vif = file->private_data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm *mvm = mvmvif->mvm;
	u8 ap_sta_id;
	struct ieee80211_chanctx_conf *chanctx_conf;
	char buf[512];
	int bufsz = sizeof(buf);
	int pos = 0;
	int i;

	mutex_lock(&mvm->mutex);

	ap_sta_id = mvmvif->ap_sta_id;

	switch (ieee80211_vif_type_p2p(vif)) {
	case NL80211_IFTYPE_ADHOC:
		pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n");
		break;
	case NL80211_IFTYPE_STATION:
		pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n");
		break;
	case NL80211_IFTYPE_AP:
		pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n");
		break;
	case NL80211_IFTYPE_P2P_CLIENT:
		pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n");
		break;
	case NL80211_IFTYPE_P2P_GO:
		pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n");
		break;
	case NL80211_IFTYPE_P2P_DEVICE:
		pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n");
		break;
	default:
		break;
	}

	pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
			 mvmvif->id, mvmvif->color);
	pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
			 vif->bss_conf.bssid);
	pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
	for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++)
		pos += scnprintf(buf+pos, bufsz-pos,
				 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
				 i, mvmvif->queue_params[i].txop,
				 mvmvif->queue_params[i].cw_min,
				 mvmvif->queue_params[i].cw_max,
				 mvmvif->queue_params[i].aifs,
				 mvmvif->queue_params[i].uapsd);

	if (vif->type == NL80211_IFTYPE_STATION &&
	    ap_sta_id != IWL_MVM_STATION_COUNT) {
		struct ieee80211_sta *sta;

		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
						lockdep_is_held(&mvm->mutex));
		if (!IS_ERR_OR_NULL(sta)) {
			struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);

			pos += scnprintf(buf+pos, bufsz-pos,
					 "ap_sta_id %d - reduced Tx power %d\n",
					 ap_sta_id,
					 mvm_sta->bt_reduced_txpower);
		}
	}

	rcu_read_lock();
	chanctx_conf = rcu_dereference(vif->chanctx_conf);
	if (chanctx_conf)
		pos += scnprintf(buf+pos, bufsz-pos,
				 "idle rx chains %d, active rx chains: %d\n",
				 chanctx_conf->rx_chains_static,
				 chanctx_conf->rx_chains_dynamic);
	rcu_read_unlock();

	mutex_unlock(&mvm->mutex);

	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
				enum iwl_dbgfs_bf_mask param, int value)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;

	dbgfs_bf->mask |= param;

	switch (param) {
	case MVM_DEBUGFS_BF_ENERGY_DELTA:
		dbgfs_bf->bf_energy_delta = value;
		break;
	case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
		dbgfs_bf->bf_roaming_energy_delta = value;
		break;
	case MVM_DEBUGFS_BF_ROAMING_STATE:
		dbgfs_bf->bf_roaming_state = value;
		break;
	case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
		dbgfs_bf->bf_temp_threshold = value;
		break;
	case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
		dbgfs_bf->bf_temp_fast_filter = value;
		break;
	case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
		dbgfs_bf->bf_temp_slow_filter = value;
		break;
	case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
		dbgfs_bf->bf_enable_beacon_filter = value;
		break;
	case MVM_DEBUGFS_BF_DEBUG_FLAG:
		dbgfs_bf->bf_debug_flag = value;
		break;
	case MVM_DEBUGFS_BF_ESCAPE_TIMER:
		dbgfs_bf->bf_escape_timer = value;
		break;
	case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
		dbgfs_bf->ba_enable_beacon_abort = value;
		break;
	case MVM_DEBUGFS_BA_ESCAPE_TIMER:
		dbgfs_bf->ba_escape_timer = value;
		break;
	}
}

static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf,
					 size_t count, loff_t *ppos)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm *mvm = mvmvif->mvm;
	enum iwl_dbgfs_bf_mask param;
	int value, ret = 0;

	if (!strncmp("bf_energy_delta=", buf, 16)) {
		if (sscanf(buf+16, "%d", &value) != 1)
			return -EINVAL;
		if (value < IWL_BF_ENERGY_DELTA_MIN ||
		    value > IWL_BF_ENERGY_DELTA_MAX)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_ENERGY_DELTA;
	} else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
		if (sscanf(buf+24, "%d", &value) != 1)
			return -EINVAL;
		if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
		    value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
	} else if (!strncmp("bf_roaming_state=", buf, 17)) {
		if (sscanf(buf+17, "%d", &value) != 1)
			return -EINVAL;
		if (value < IWL_BF_ROAMING_STATE_MIN ||
		    value > IWL_BF_ROAMING_STATE_MAX)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_ROAMING_STATE;
	} else if (!strncmp("bf_temp_threshold=", buf, 18)) {
		if (sscanf(buf+18, "%d", &value) != 1)
			return -EINVAL;
		if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
		    value > IWL_BF_TEMP_THRESHOLD_MAX)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
	} else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
		if (sscanf(buf+20, "%d", &value) != 1)
			return -EINVAL;
		if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
		    value > IWL_BF_TEMP_FAST_FILTER_MAX)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
	} else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
		if (sscanf(buf+20, "%d", &value) != 1)
			return -EINVAL;
		if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
		    value > IWL_BF_TEMP_SLOW_FILTER_MAX)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
	} else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
		if (sscanf(buf+24, "%d", &value) != 1)
			return -EINVAL;
		if (value < 0 || value > 1)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
	} else if (!strncmp("bf_debug_flag=", buf, 14)) {
		if (sscanf(buf+14, "%d", &value) != 1)
			return -EINVAL;
		if (value < 0 || value > 1)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_DEBUG_FLAG;
	} else if (!strncmp("bf_escape_timer=", buf, 16)) {
		if (sscanf(buf+16, "%d", &value) != 1)
			return -EINVAL;
		if (value < IWL_BF_ESCAPE_TIMER_MIN ||
		    value > IWL_BF_ESCAPE_TIMER_MAX)
			return -EINVAL;
		param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
	} else if (!strncmp("ba_escape_timer=", buf, 16)) {
		if (sscanf(buf+16, "%d", &value) != 1)
			return -EINVAL;
		if (value < IWL_BA_ESCAPE_TIMER_MIN ||
		    value > IWL_BA_ESCAPE_TIMER_MAX)
			return -EINVAL;
		param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
	} else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
		if (sscanf(buf+23, "%d", &value) != 1)
			return -EINVAL;
		if (value < 0 || value > 1)
			return -EINVAL;
		param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
	} else {
		return -EINVAL;
	}

	mutex_lock(&mvm->mutex);
	iwl_dbgfs_update_bf(vif, param, value);
	if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value)
		ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
	else
		ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
	mutex_unlock(&mvm->mutex);

	return ret ?: count;
}

static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos)
{
	struct ieee80211_vif *vif = file->private_data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	char buf[256];
	int pos = 0;
	const size_t bufsz = sizeof(buf);
	struct iwl_beacon_filter_cmd cmd = {
		IWL_BF_CMD_CONFIG_DEFAULTS,
		.bf_enable_beacon_filter =
			cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
		.ba_enable_beacon_abort =
			cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
	};

	iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
	if (mvmvif->bf_data.bf_enabled)
		cmd.bf_enable_beacon_filter = cpu_to_le32(1);
	else
		cmd.bf_enable_beacon_filter = 0;

	pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
			 le32_to_cpu(cmd.bf_energy_delta));
	pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
			 le32_to_cpu(cmd.bf_roaming_energy_delta));
	pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
			 le32_to_cpu(cmd.bf_roaming_state));
	pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
			 le32_to_cpu(cmd.bf_temp_threshold));
	pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
			 le32_to_cpu(cmd.bf_temp_fast_filter));
	pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
			 le32_to_cpu(cmd.bf_temp_slow_filter));
	pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
			 le32_to_cpu(cmd.bf_enable_beacon_filter));
	pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
			 le32_to_cpu(cmd.bf_debug_flag));
	pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
			 le32_to_cpu(cmd.bf_escape_timer));
	pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
			 le32_to_cpu(cmd.ba_escape_timer));
	pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
			 le32_to_cpu(cmd.ba_enable_beacon_abort));

	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
					   size_t count, loff_t *ppos)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm *mvm = mvmvif->mvm;
	u8 value;
	int ret;

	ret = kstrtou8(buf, 0, &value);
	if (ret)
		return ret;
	if (value > 1)
		return -EINVAL;

	mutex_lock(&mvm->mutex);
	iwl_mvm_update_low_latency(mvm, vif, value);
	mutex_unlock(&mvm->mutex);

	return count;
}

static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
					  char __user *user_buf,
					  size_t count, loff_t *ppos)
{
	struct ieee80211_vif *vif = file->private_data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	char buf[3];

	buf[0] = mvmvif->low_latency ? '1' : '0';
	buf[1] = '\n';
	buf[2] = '\0';
	return simple_read_from_buffer(user_buf, count, ppos, buf, sizeof(buf));
}

static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file,
						char __user *user_buf,
						size_t count, loff_t *ppos)
{
	struct ieee80211_vif *vif = file->private_data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	char buf[20];
	int len;

	len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_bssid);
	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}

static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif,
						 char *buf, size_t count,
						 loff_t *ppos)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm *mvm = mvmvif->mvm;
	bool ret;

	mutex_lock(&mvm->mutex);
	ret = mac_pton(buf, mvmvif->uapsd_misbehaving_bssid);
	mutex_unlock(&mvm->mutex);

	return ret ? count : -EINVAL;
}

static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf,
					  size_t count, loff_t *ppos)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm *mvm = mvmvif->mvm;
	struct ieee80211_chanctx_conf *chanctx_conf;
	struct iwl_mvm_phy_ctxt *phy_ctxt;
	u16 value;
	int ret;

	ret = kstrtou16(buf, 0, &value);
	if (ret)
		return ret;

	mutex_lock(&mvm->mutex);
	rcu_read_lock();

	chanctx_conf = rcu_dereference(vif->chanctx_conf);
	/* make sure the channel context is assigned */
	if (!chanctx_conf) {
		rcu_read_unlock();
		mutex_unlock(&mvm->mutex);
		return -EINVAL;
	}

	phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv];
	rcu_read_unlock();

	mvm->dbgfs_rx_phyinfo = value;

	ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def,
				       chanctx_conf->rx_chains_static,
				       chanctx_conf->rx_chains_dynamic);
	mutex_unlock(&mvm->mutex);

	return ret ?: count;
}

static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
					 char __user *user_buf,
					 size_t count, loff_t *ppos)
{
	struct ieee80211_vif *vif = file->private_data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	char buf[8];

	snprintf(buf, sizeof(buf), "0x%04x\n", mvmvif->mvm->dbgfs_rx_phyinfo);

	return simple_read_from_buffer(user_buf, count, ppos, buf, sizeof(buf));
}

#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
	_MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
	_MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
#define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do {		\
		if (!debugfs_create_file(#name, mode, parent, vif,	\
					 &iwl_dbgfs_##name##_ops))	\
			goto err;					\
	} while (0)

MVM_DEBUGFS_READ_FILE_OPS(mac_params);
MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);

void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
	struct dentry *dbgfs_dir = vif->debugfs_dir;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	char buf[100];

	/*
	 * Check if debugfs directory already exist before creating it.
	 * This may happen when, for example, resetting hw or suspend-resume
	 */
	if (!dbgfs_dir || mvmvif->dbgfs_dir)
		return;

	mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);

	if (!mvmvif->dbgfs_dir) {
		IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
			dbgfs_dir->d_name.name);
		return;
	}

	if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
	    ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
	     (vif->type == NL80211_IFTYPE_STATION && vif->p2p &&
	      mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_DCM)))
		MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
					 S_IRUSR);

	MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, S_IRUSR);
	MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, S_IRUSR);
	MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir,
				 S_IRUSR | S_IWUSR);
	MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir,
				 S_IRUSR | S_IWUSR);
	MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir,
				 S_IRUSR | S_IWUSR);

	if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
	    mvmvif == mvm->bf_allowed_vif)
		MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir,
					 S_IRUSR | S_IWUSR);

	/*
	 * Create symlink for convenience pointing to interface specific
	 * debugfs entries for the driver. For example, under
	 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
	 * find
	 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
	 */
	snprintf(buf, 100, "../../../%s/%s/%s/%s",
		 dbgfs_dir->d_parent->d_parent->d_name.name,
		 dbgfs_dir->d_parent->d_name.name,
		 dbgfs_dir->d_name.name,
		 mvmvif->dbgfs_dir->d_name.name);

	mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
						     mvm->debugfs_dir, buf);
	if (!mvmvif->dbgfs_slink)
		IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
			dbgfs_dir->d_name.name);
	return;
err:
	IWL_ERR(mvm, "Can't create debugfs entity\n");
}

void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	debugfs_remove(mvmvif->dbgfs_slink);
	mvmvif->dbgfs_slink = NULL;

	debugfs_remove_recursive(mvmvif->dbgfs_dir);
	mvmvif->dbgfs_dir = NULL;
}
OpenPOWER on IntegriCloud