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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7#include "mvm.h"
8#include "debugfs.h"
9
10static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
11 struct ieee80211_vif *vif,
12 enum iwl_dbgfs_pm_mask param, int val)
13{
14 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
15 struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
16
17 dbgfs_pm->mask |= param;
18
19 switch (param) {
20 case MVM_DEBUGFS_PM_KEEP_ALIVE: {
21 int dtimper = vif->bss_conf.dtim_period ?: 1;
22 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
23
24 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
25 if (val * MSEC_PER_SEC < 3 * dtimper_msec)
26 IWL_WARN(mvm,
27 "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
28 val * MSEC_PER_SEC, 3 * dtimper_msec);
29 dbgfs_pm->keep_alive_seconds = val;
30 break;
31 }
32 case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
33 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
34 val ? "enabled" : "disabled");
35 dbgfs_pm->skip_over_dtim = val;
36 break;
37 case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
38 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
39 dbgfs_pm->skip_dtim_periods = val;
40 break;
41 case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
42 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
43 dbgfs_pm->rx_data_timeout = val;
44 break;
45 case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
46 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
47 dbgfs_pm->tx_data_timeout = val;
48 break;
49 case MVM_DEBUGFS_PM_LPRX_ENA:
50 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
51 dbgfs_pm->lprx_ena = val;
52 break;
53 case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
54 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
55 dbgfs_pm->lprx_rssi_threshold = val;
56 break;
57 case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
58 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
59 dbgfs_pm->snooze_ena = val;
60 break;
61 case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING:
62 IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val);
63 dbgfs_pm->uapsd_misbehaving = val;
64 break;
65 case MVM_DEBUGFS_PM_USE_PS_POLL:
66 IWL_DEBUG_POWER(mvm, "use_ps_poll=%d\n", val);
67 dbgfs_pm->use_ps_poll = val;
68 break;
69 }
70}
71
72static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
73 size_t count, loff_t *ppos)
74{
75 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
76 struct iwl_mvm *mvm = mvmvif->mvm;
77 enum iwl_dbgfs_pm_mask param;
78 int val, ret;
79
80 if (!strncmp("keep_alive=", buf, 11)) {
81 if (sscanf(buf + 11, "%d", &val) != 1)
82 return -EINVAL;
83 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
84 } else if (!strncmp("skip_over_dtim=", buf, 15)) {
85 if (sscanf(buf + 15, "%d", &val) != 1)
86 return -EINVAL;
87 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
88 } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
89 if (sscanf(buf + 18, "%d", &val) != 1)
90 return -EINVAL;
91 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
92 } else if (!strncmp("rx_data_timeout=", buf, 16)) {
93 if (sscanf(buf + 16, "%d", &val) != 1)
94 return -EINVAL;
95 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
96 } else if (!strncmp("tx_data_timeout=", buf, 16)) {
97 if (sscanf(buf + 16, "%d", &val) != 1)
98 return -EINVAL;
99 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
100 } else if (!strncmp("lprx=", buf, 5)) {
101 if (sscanf(buf + 5, "%d", &val) != 1)
102 return -EINVAL;
103 param = MVM_DEBUGFS_PM_LPRX_ENA;
104 } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
105 if (sscanf(buf + 20, "%d", &val) != 1)
106 return -EINVAL;
107 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
108 POWER_LPRX_RSSI_THRESHOLD_MIN)
109 return -EINVAL;
110 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
111 } else if (!strncmp("snooze_enable=", buf, 14)) {
112 if (sscanf(buf + 14, "%d", &val) != 1)
113 return -EINVAL;
114 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
115 } else if (!strncmp("uapsd_misbehaving=", buf, 18)) {
116 if (sscanf(buf + 18, "%d", &val) != 1)
117 return -EINVAL;
118 param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING;
119 } else if (!strncmp("use_ps_poll=", buf, 12)) {
120 if (sscanf(buf + 12, "%d", &val) != 1)
121 return -EINVAL;
122 param = MVM_DEBUGFS_PM_USE_PS_POLL;
123 } else {
124 return -EINVAL;
125 }
126
127 mutex_lock(&mvm->mutex);
128 iwl_dbgfs_update_pm(mvm, vif, param, val);
129 ret = iwl_mvm_power_update_mac(mvm);
130 mutex_unlock(&mvm->mutex);
131
132 return ret ?: count;
133}
134
135static ssize_t iwl_dbgfs_tx_pwr_lmt_read(struct file *file,
136 char __user *user_buf,
137 size_t count, loff_t *ppos)
138{
139 struct ieee80211_vif *vif = file->private_data;
140 char buf[64];
141 int bufsz = sizeof(buf);
142 int pos;
143
144 pos = scnprintf(buf, bufsz, "bss limit = %d\n",
145 vif->bss_conf.txpower);
146
147 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
148}
149
150static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
151 char __user *user_buf,
152 size_t count, loff_t *ppos)
153{
154 struct ieee80211_vif *vif = file->private_data;
155 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
156 struct iwl_mvm *mvm = mvmvif->mvm;
157 char buf[512];
158 int bufsz = sizeof(buf);
159 int pos;
160
161 pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz);
162
163 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
164}
165
166static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
167 char __user *user_buf,
168 size_t count, loff_t *ppos)
169{
170 struct ieee80211_vif *vif = file->private_data;
171 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
172 struct iwl_mvm *mvm = mvmvif->mvm;
173 u8 ap_sta_id;
174 struct ieee80211_chanctx_conf *chanctx_conf;
175 char buf[512];
176 int bufsz = sizeof(buf);
177 int pos = 0;
178 int i;
179
180 mutex_lock(&mvm->mutex);
181
182 ap_sta_id = mvmvif->deflink.ap_sta_id;
183
184 switch (ieee80211_vif_type_p2p(vif)) {
185 case NL80211_IFTYPE_ADHOC:
186 pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n");
187 break;
188 case NL80211_IFTYPE_STATION:
189 pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n");
190 break;
191 case NL80211_IFTYPE_AP:
192 pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n");
193 break;
194 case NL80211_IFTYPE_P2P_CLIENT:
195 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n");
196 break;
197 case NL80211_IFTYPE_P2P_GO:
198 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n");
199 break;
200 case NL80211_IFTYPE_P2P_DEVICE:
201 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n");
202 break;
203 default:
204 break;
205 }
206
207 pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
208 mvmvif->id, mvmvif->color);
209 pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
210 vif->bss_conf.bssid);
211 pos += scnprintf(buf+pos, bufsz-pos, "Load: %d\n",
212 mvm->tcm.result.load[mvmvif->id]);
213 pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
214 for (i = 0; i < ARRAY_SIZE(mvmvif->deflink.queue_params); i++)
215 pos += scnprintf(buf+pos, bufsz-pos,
216 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
217 i, mvmvif->deflink.queue_params[i].txop,
218 mvmvif->deflink.queue_params[i].cw_min,
219 mvmvif->deflink.queue_params[i].cw_max,
220 mvmvif->deflink.queue_params[i].aifs,
221 mvmvif->deflink.queue_params[i].uapsd);
222
223 if (vif->type == NL80211_IFTYPE_STATION &&
224 ap_sta_id != IWL_MVM_INVALID_STA) {
225 struct iwl_mvm_sta *mvm_sta;
226
227 mvm_sta = iwl_mvm_sta_from_staid_protected(mvm, ap_sta_id);
228 if (mvm_sta) {
229 pos += scnprintf(buf+pos, bufsz-pos,
230 "ap_sta_id %d - reduced Tx power %d\n",
231 ap_sta_id,
232 mvm_sta->bt_reduced_txpower);
233 }
234 }
235
236 rcu_read_lock();
237 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
238 if (chanctx_conf)
239 pos += scnprintf(buf+pos, bufsz-pos,
240 "idle rx chains %d, active rx chains: %d\n",
241 chanctx_conf->rx_chains_static,
242 chanctx_conf->rx_chains_dynamic);
243 rcu_read_unlock();
244
245 mutex_unlock(&mvm->mutex);
246
247 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
248}
249
250static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
251 enum iwl_dbgfs_bf_mask param, int value)
252{
253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
254 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
255
256 dbgfs_bf->mask |= param;
257
258 switch (param) {
259 case MVM_DEBUGFS_BF_ENERGY_DELTA:
260 dbgfs_bf->bf_energy_delta = value;
261 break;
262 case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
263 dbgfs_bf->bf_roaming_energy_delta = value;
264 break;
265 case MVM_DEBUGFS_BF_ROAMING_STATE:
266 dbgfs_bf->bf_roaming_state = value;
267 break;
268 case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
269 dbgfs_bf->bf_temp_threshold = value;
270 break;
271 case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
272 dbgfs_bf->bf_temp_fast_filter = value;
273 break;
274 case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
275 dbgfs_bf->bf_temp_slow_filter = value;
276 break;
277 case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
278 dbgfs_bf->bf_enable_beacon_filter = value;
279 break;
280 case MVM_DEBUGFS_BF_DEBUG_FLAG:
281 dbgfs_bf->bf_debug_flag = value;
282 break;
283 case MVM_DEBUGFS_BF_ESCAPE_TIMER:
284 dbgfs_bf->bf_escape_timer = value;
285 break;
286 case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
287 dbgfs_bf->ba_enable_beacon_abort = value;
288 break;
289 case MVM_DEBUGFS_BA_ESCAPE_TIMER:
290 dbgfs_bf->ba_escape_timer = value;
291 break;
292 }
293}
294
295static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf,
296 size_t count, loff_t *ppos)
297{
298 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
299 struct iwl_mvm *mvm = mvmvif->mvm;
300 enum iwl_dbgfs_bf_mask param;
301 int value, ret = 0;
302
303 if (!strncmp("bf_energy_delta=", buf, 16)) {
304 if (sscanf(buf+16, "%d", &value) != 1)
305 return -EINVAL;
306 if (value < IWL_BF_ENERGY_DELTA_MIN ||
307 value > IWL_BF_ENERGY_DELTA_MAX)
308 return -EINVAL;
309 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
310 } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
311 if (sscanf(buf+24, "%d", &value) != 1)
312 return -EINVAL;
313 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
314 value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
315 return -EINVAL;
316 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
317 } else if (!strncmp("bf_roaming_state=", buf, 17)) {
318 if (sscanf(buf+17, "%d", &value) != 1)
319 return -EINVAL;
320 if (value < IWL_BF_ROAMING_STATE_MIN ||
321 value > IWL_BF_ROAMING_STATE_MAX)
322 return -EINVAL;
323 param = MVM_DEBUGFS_BF_ROAMING_STATE;
324 } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
325 if (sscanf(buf+18, "%d", &value) != 1)
326 return -EINVAL;
327 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
328 value > IWL_BF_TEMP_THRESHOLD_MAX)
329 return -EINVAL;
330 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
331 } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
332 if (sscanf(buf+20, "%d", &value) != 1)
333 return -EINVAL;
334 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
335 value > IWL_BF_TEMP_FAST_FILTER_MAX)
336 return -EINVAL;
337 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
338 } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
339 if (sscanf(buf+20, "%d", &value) != 1)
340 return -EINVAL;
341 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
342 value > IWL_BF_TEMP_SLOW_FILTER_MAX)
343 return -EINVAL;
344 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
345 } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
346 if (sscanf(buf+24, "%d", &value) != 1)
347 return -EINVAL;
348 if (value < 0 || value > 1)
349 return -EINVAL;
350 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
351 } else if (!strncmp("bf_debug_flag=", buf, 14)) {
352 if (sscanf(buf+14, "%d", &value) != 1)
353 return -EINVAL;
354 if (value < 0 || value > 1)
355 return -EINVAL;
356 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
357 } else if (!strncmp("bf_escape_timer=", buf, 16)) {
358 if (sscanf(buf+16, "%d", &value) != 1)
359 return -EINVAL;
360 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
361 value > IWL_BF_ESCAPE_TIMER_MAX)
362 return -EINVAL;
363 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
364 } else if (!strncmp("ba_escape_timer=", buf, 16)) {
365 if (sscanf(buf+16, "%d", &value) != 1)
366 return -EINVAL;
367 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
368 value > IWL_BA_ESCAPE_TIMER_MAX)
369 return -EINVAL;
370 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
371 } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
372 if (sscanf(buf+23, "%d", &value) != 1)
373 return -EINVAL;
374 if (value < 0 || value > 1)
375 return -EINVAL;
376 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
377 } else {
378 return -EINVAL;
379 }
380
381 mutex_lock(&mvm->mutex);
382 iwl_dbgfs_update_bf(vif, param, value);
383 if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value)
384 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
385 else
386 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
387 mutex_unlock(&mvm->mutex);
388
389 return ret ?: count;
390}
391
392static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
393 char __user *user_buf,
394 size_t count, loff_t *ppos)
395{
396 struct ieee80211_vif *vif = file->private_data;
397 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
398 char buf[256];
399 int pos = 0;
400 const size_t bufsz = sizeof(buf);
401 struct iwl_beacon_filter_cmd cmd = {
402 IWL_BF_CMD_CONFIG_DEFAULTS,
403 .bf_enable_beacon_filter =
404 cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
405 .ba_enable_beacon_abort =
406 cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
407 };
408
409 iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
410 if (mvmvif->bf_data.bf_enabled)
411 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
412 else
413 cmd.bf_enable_beacon_filter = 0;
414
415 pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
416 le32_to_cpu(cmd.bf_energy_delta));
417 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
418 le32_to_cpu(cmd.bf_roaming_energy_delta));
419 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
420 le32_to_cpu(cmd.bf_roaming_state));
421 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
422 le32_to_cpu(cmd.bf_temp_threshold));
423 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
424 le32_to_cpu(cmd.bf_temp_fast_filter));
425 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
426 le32_to_cpu(cmd.bf_temp_slow_filter));
427 pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
428 le32_to_cpu(cmd.bf_enable_beacon_filter));
429 pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
430 le32_to_cpu(cmd.bf_debug_flag));
431 pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
432 le32_to_cpu(cmd.bf_escape_timer));
433 pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
434 le32_to_cpu(cmd.ba_escape_timer));
435 pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
436 le32_to_cpu(cmd.ba_enable_beacon_abort));
437
438 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
439}
440
441static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file,
442 char __user *user_buf,
443 size_t count, loff_t *ppos)
444{
445 struct ieee80211_vif *vif = file->private_data;
446 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
447 struct iwl_mvm *mvm = mvmvif->mvm;
448 u32 curr_gp2;
449 u64 curr_os;
450 s64 diff;
451 char buf[64];
452 const size_t bufsz = sizeof(buf);
453 int pos = 0;
454
455 mutex_lock(&mvm->mutex);
456 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, &curr_os, NULL);
457 mutex_unlock(&mvm->mutex);
458
459 do_div(curr_os, NSEC_PER_USEC);
460 diff = curr_os - curr_gp2;
461 pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff);
462
463 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
464}
465
466static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
467 size_t count, loff_t *ppos)
468{
469 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
470 struct iwl_mvm *mvm = mvmvif->mvm;
471 u8 value;
472 int ret;
473
474 ret = kstrtou8(buf, 0, &value);
475 if (ret)
476 return ret;
477 if (value > 1)
478 return -EINVAL;
479
480 mutex_lock(&mvm->mutex);
481 iwl_mvm_update_low_latency(mvm, vif, value, LOW_LATENCY_DEBUGFS);
482 mutex_unlock(&mvm->mutex);
483
484 return count;
485}
486
487static ssize_t
488iwl_dbgfs_low_latency_force_write(struct ieee80211_vif *vif, char *buf,
489 size_t count, loff_t *ppos)
490{
491 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
492 struct iwl_mvm *mvm = mvmvif->mvm;
493 u8 value;
494 int ret;
495
496 ret = kstrtou8(buf, 0, &value);
497 if (ret)
498 return ret;
499
500 if (value > NUM_LOW_LATENCY_FORCE)
501 return -EINVAL;
502
503 mutex_lock(&mvm->mutex);
504 if (value == LOW_LATENCY_FORCE_UNSET) {
505 iwl_mvm_update_low_latency(mvm, vif, false,
506 LOW_LATENCY_DEBUGFS_FORCE);
507 iwl_mvm_update_low_latency(mvm, vif, false,
508 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
509 } else {
510 iwl_mvm_update_low_latency(mvm, vif,
511 value == LOW_LATENCY_FORCE_ON,
512 LOW_LATENCY_DEBUGFS_FORCE);
513 iwl_mvm_update_low_latency(mvm, vif, true,
514 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
515 }
516 mutex_unlock(&mvm->mutex);
517 return count;
518}
519
520static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
521 char __user *user_buf,
522 size_t count, loff_t *ppos)
523{
524 struct ieee80211_vif *vif = file->private_data;
525 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
526 char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n"
527 "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n";
528
529 /*
530 * all values in format are boolean so the size of format is enough
531 * for holding the result string
532 */
533 char buf[sizeof(format) + 1] = {};
534 int len;
535
536 len = scnprintf(buf, sizeof(buf) - 1, format,
537 !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC),
538 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS),
539 !!(mvmvif->low_latency & LOW_LATENCY_VCMD),
540 !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE),
541 !!(mvmvif->low_latency &
542 LOW_LATENCY_DEBUGFS_FORCE_ENABLE),
543 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE),
544 !!(mvmvif->low_latency_actual));
545 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
546}
547
548static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file,
549 char __user *user_buf,
550 size_t count, loff_t *ppos)
551{
552 struct ieee80211_vif *vif = file->private_data;
553 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
554 char buf[20];
555 int len;
556
557 len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_ap_addr);
558 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
559}
560
561static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif,
562 char *buf, size_t count,
563 loff_t *ppos)
564{
565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
566 struct iwl_mvm *mvm = mvmvif->mvm;
567 bool ret;
568
569 mutex_lock(&mvm->mutex);
570 ret = mac_pton(buf, mvmvif->uapsd_misbehaving_ap_addr);
571 mutex_unlock(&mvm->mutex);
572
573 return ret ? count : -EINVAL;
574}
575
576static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf,
577 size_t count, loff_t *ppos)
578{
579 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
580 struct iwl_mvm *mvm = mvmvif->mvm;
581 struct ieee80211_chanctx_conf *chanctx_conf;
582 struct iwl_mvm_phy_ctxt *phy_ctxt;
583 u16 value;
584 int ret;
585
586 ret = kstrtou16(buf, 0, &value);
587 if (ret)
588 return ret;
589
590 mutex_lock(&mvm->mutex);
591 rcu_read_lock();
592
593 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
594 /* make sure the channel context is assigned */
595 if (!chanctx_conf) {
596 rcu_read_unlock();
597 mutex_unlock(&mvm->mutex);
598 return -EINVAL;
599 }
600
601 phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv];
602 rcu_read_unlock();
603
604 mvm->dbgfs_rx_phyinfo = value;
605
606 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def,
607 chanctx_conf->rx_chains_static,
608 chanctx_conf->rx_chains_dynamic);
609 mutex_unlock(&mvm->mutex);
610
611 return ret ?: count;
612}
613
614static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
615 char __user *user_buf,
616 size_t count, loff_t *ppos)
617{
618 struct ieee80211_vif *vif = file->private_data;
619 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
620 char buf[8];
621 int len;
622
623 len = scnprintf(buf, sizeof(buf), "0x%04x\n",
624 mvmvif->mvm->dbgfs_rx_phyinfo);
625
626 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
627}
628
629static void iwl_dbgfs_quota_check(void *data, u8 *mac,
630 struct ieee80211_vif *vif)
631{
632 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
633 int *ret = data;
634
635 if (mvmvif->dbgfs_quota_min)
636 *ret = -EINVAL;
637}
638
639static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf,
640 size_t count, loff_t *ppos)
641{
642 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
643 struct iwl_mvm *mvm = mvmvif->mvm;
644 u16 value;
645 int ret;
646
647 ret = kstrtou16(buf, 0, &value);
648 if (ret)
649 return ret;
650
651 if (value > 95)
652 return -EINVAL;
653
654 mutex_lock(&mvm->mutex);
655
656 mvmvif->dbgfs_quota_min = 0;
657 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
658 iwl_dbgfs_quota_check, &ret);
659 if (ret == 0) {
660 mvmvif->dbgfs_quota_min = value;
661 iwl_mvm_update_quotas(mvm, false, NULL);
662 }
663 mutex_unlock(&mvm->mutex);
664
665 return ret ?: count;
666}
667
668static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
669 char __user *user_buf,
670 size_t count, loff_t *ppos)
671{
672 struct ieee80211_vif *vif = file->private_data;
673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
674 char buf[10];
675 int len;
676
677 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min);
678
679 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
680}
681
682#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
683 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
684#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
685 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
686#define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
687 debugfs_create_file(#name, mode, parent, vif, \
688 &iwl_dbgfs_##name##_ops); \
689 } while (0)
690
691MVM_DEBUGFS_READ_FILE_OPS(mac_params);
692MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
693MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
694MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
695MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
696MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10);
697MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
698MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);
699MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
700MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff);
701
702void iwl_mvm_vif_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
703{
704 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
705 struct dentry *dbgfs_dir = vif->debugfs_dir;
706 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
707
708 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
709 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) {
710 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
711 dbgfs_dir);
712 return;
713 }
714
715 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
716 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
717 (vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
718 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600);
719
720 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400);
721 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400);
722 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600);
723 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600);
724 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600);
725 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
726 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
727 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
728
729 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
730 mvmvif == mvm->bf_allowed_vif)
731 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600);
732}
733
734void iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
735{
736 struct dentry *dbgfs_dir = vif->debugfs_dir;
737 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
738 char buf[100];
739
740 /* this will happen in monitor mode */
741 if (!dbgfs_dir)
742 return;
743
744 /*
745 * Create symlink for convenience pointing to interface specific
746 * debugfs entries for the driver. For example, under
747 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
748 * find
749 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
750 */
751 snprintf(buf, 100, "../../../%pd3/iwlmvm", dbgfs_dir);
752
753 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
754 mvm->debugfs_dir, buf);
755}
756
757void iwl_mvm_vif_dbgfs_rm_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
758{
759 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
760
761 debugfs_remove(mvmvif->dbgfs_slink);
762 mvmvif->dbgfs_slink = NULL;
763}
764
765#define MVM_DEBUGFS_WRITE_LINK_FILE_OPS(name, bufsz) \
766 _MVM_DEBUGFS_WRITE_FILE_OPS(link_##name, bufsz, \
767 struct ieee80211_bss_conf)
768#define MVM_DEBUGFS_READ_WRITE_LINK_FILE_OPS(name, bufsz) \
769 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(link_##name, bufsz, \
770 struct ieee80211_bss_conf)
771#define MVM_DEBUGFS_ADD_LINK_FILE(name, parent, mode) \
772 debugfs_create_file(#name, mode, parent, link_conf, \
773 &iwl_dbgfs_link_##name##_ops)
774
775static void iwl_mvm_debugfs_add_link_files(struct ieee80211_vif *vif,
776 struct ieee80211_bss_conf *link_conf,
777 struct dentry *mvm_dir)
778{
779 /* Add per-link files here*/
780}
781
782void iwl_mvm_link_add_debugfs(struct ieee80211_hw *hw,
783 struct ieee80211_vif *vif,
784 struct ieee80211_bss_conf *link_conf,
785 struct dentry *dir)
786{
787 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
788 struct iwl_mvm *mvm = mvmvif->mvm;
789 unsigned int link_id = link_conf->link_id;
790 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
791 struct dentry *mvm_dir;
792
793 if (WARN_ON(!link_info) || !dir)
794 return;
795
796 if (dir == vif->debugfs_dir) {
797 WARN_ON(!mvmvif->dbgfs_dir);
798 mvm_dir = mvmvif->dbgfs_dir;
799 } else {
800 mvm_dir = debugfs_create_dir("iwlmvm", dir);
801 if (IS_ERR_OR_NULL(mvm_dir)) {
802 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
803 dir);
804 return;
805 }
806 }
807
808 iwl_mvm_debugfs_add_link_files(vif, link_conf, mvm_dir);
809}
1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called COPYING.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <linuxwifi@intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 * BSD LICENSE
29 *
30 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
31 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
32 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 *
39 * * Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * * Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in
43 * the documentation and/or other materials provided with the
44 * distribution.
45 * * Neither the name Intel Corporation nor the names of its
46 * contributors may be used to endorse or promote products derived
47 * from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60 *
61 *****************************************************************************/
62#include "mvm.h"
63#include "debugfs.h"
64
65static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
66 struct ieee80211_vif *vif,
67 enum iwl_dbgfs_pm_mask param, int val)
68{
69 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
70 struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
71
72 dbgfs_pm->mask |= param;
73
74 switch (param) {
75 case MVM_DEBUGFS_PM_KEEP_ALIVE: {
76 int dtimper = vif->bss_conf.dtim_period ?: 1;
77 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
78
79 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
80 if (val * MSEC_PER_SEC < 3 * dtimper_msec)
81 IWL_WARN(mvm,
82 "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
83 val * MSEC_PER_SEC, 3 * dtimper_msec);
84 dbgfs_pm->keep_alive_seconds = val;
85 break;
86 }
87 case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
88 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
89 val ? "enabled" : "disabled");
90 dbgfs_pm->skip_over_dtim = val;
91 break;
92 case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
93 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
94 dbgfs_pm->skip_dtim_periods = val;
95 break;
96 case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
97 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
98 dbgfs_pm->rx_data_timeout = val;
99 break;
100 case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
101 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
102 dbgfs_pm->tx_data_timeout = val;
103 break;
104 case MVM_DEBUGFS_PM_LPRX_ENA:
105 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
106 dbgfs_pm->lprx_ena = val;
107 break;
108 case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
109 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
110 dbgfs_pm->lprx_rssi_threshold = val;
111 break;
112 case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
113 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
114 dbgfs_pm->snooze_ena = val;
115 break;
116 case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING:
117 IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val);
118 dbgfs_pm->uapsd_misbehaving = val;
119 break;
120 case MVM_DEBUGFS_PM_USE_PS_POLL:
121 IWL_DEBUG_POWER(mvm, "use_ps_poll=%d\n", val);
122 dbgfs_pm->use_ps_poll = val;
123 break;
124 }
125}
126
127static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
128 size_t count, loff_t *ppos)
129{
130 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
131 struct iwl_mvm *mvm = mvmvif->mvm;
132 enum iwl_dbgfs_pm_mask param;
133 int val, ret;
134
135 if (!strncmp("keep_alive=", buf, 11)) {
136 if (sscanf(buf + 11, "%d", &val) != 1)
137 return -EINVAL;
138 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
139 } else if (!strncmp("skip_over_dtim=", buf, 15)) {
140 if (sscanf(buf + 15, "%d", &val) != 1)
141 return -EINVAL;
142 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
143 } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
144 if (sscanf(buf + 18, "%d", &val) != 1)
145 return -EINVAL;
146 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
147 } else if (!strncmp("rx_data_timeout=", buf, 16)) {
148 if (sscanf(buf + 16, "%d", &val) != 1)
149 return -EINVAL;
150 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
151 } else if (!strncmp("tx_data_timeout=", buf, 16)) {
152 if (sscanf(buf + 16, "%d", &val) != 1)
153 return -EINVAL;
154 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
155 } else if (!strncmp("lprx=", buf, 5)) {
156 if (sscanf(buf + 5, "%d", &val) != 1)
157 return -EINVAL;
158 param = MVM_DEBUGFS_PM_LPRX_ENA;
159 } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
160 if (sscanf(buf + 20, "%d", &val) != 1)
161 return -EINVAL;
162 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
163 POWER_LPRX_RSSI_THRESHOLD_MIN)
164 return -EINVAL;
165 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
166 } else if (!strncmp("snooze_enable=", buf, 14)) {
167 if (sscanf(buf + 14, "%d", &val) != 1)
168 return -EINVAL;
169 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
170 } else if (!strncmp("uapsd_misbehaving=", buf, 18)) {
171 if (sscanf(buf + 18, "%d", &val) != 1)
172 return -EINVAL;
173 param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING;
174 } else if (!strncmp("use_ps_poll=", buf, 12)) {
175 if (sscanf(buf + 12, "%d", &val) != 1)
176 return -EINVAL;
177 param = MVM_DEBUGFS_PM_USE_PS_POLL;
178 } else {
179 return -EINVAL;
180 }
181
182 mutex_lock(&mvm->mutex);
183 iwl_dbgfs_update_pm(mvm, vif, param, val);
184 ret = iwl_mvm_power_update_mac(mvm);
185 mutex_unlock(&mvm->mutex);
186
187 return ret ?: count;
188}
189
190static ssize_t iwl_dbgfs_tx_pwr_lmt_read(struct file *file,
191 char __user *user_buf,
192 size_t count, loff_t *ppos)
193{
194 struct ieee80211_vif *vif = file->private_data;
195 char buf[64];
196 int bufsz = sizeof(buf);
197 int pos;
198
199 pos = scnprintf(buf, bufsz, "bss limit = %d\n",
200 vif->bss_conf.txpower);
201
202 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
203}
204
205static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
206 char __user *user_buf,
207 size_t count, loff_t *ppos)
208{
209 struct ieee80211_vif *vif = file->private_data;
210 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
211 struct iwl_mvm *mvm = mvmvif->mvm;
212 char buf[512];
213 int bufsz = sizeof(buf);
214 int pos;
215
216 pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz);
217
218 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
219}
220
221static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
222 char __user *user_buf,
223 size_t count, loff_t *ppos)
224{
225 struct ieee80211_vif *vif = file->private_data;
226 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
227 struct iwl_mvm *mvm = mvmvif->mvm;
228 u8 ap_sta_id;
229 struct ieee80211_chanctx_conf *chanctx_conf;
230 char buf[512];
231 int bufsz = sizeof(buf);
232 int pos = 0;
233 int i;
234
235 mutex_lock(&mvm->mutex);
236
237 ap_sta_id = mvmvif->ap_sta_id;
238
239 switch (ieee80211_vif_type_p2p(vif)) {
240 case NL80211_IFTYPE_ADHOC:
241 pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n");
242 break;
243 case NL80211_IFTYPE_STATION:
244 pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n");
245 break;
246 case NL80211_IFTYPE_AP:
247 pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n");
248 break;
249 case NL80211_IFTYPE_P2P_CLIENT:
250 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n");
251 break;
252 case NL80211_IFTYPE_P2P_GO:
253 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n");
254 break;
255 case NL80211_IFTYPE_P2P_DEVICE:
256 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n");
257 break;
258 default:
259 break;
260 }
261
262 pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
263 mvmvif->id, mvmvif->color);
264 pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
265 vif->bss_conf.bssid);
266 pos += scnprintf(buf+pos, bufsz-pos, "Load: %d\n",
267 mvm->tcm.result.load[mvmvif->id]);
268 pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
269 for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++)
270 pos += scnprintf(buf+pos, bufsz-pos,
271 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
272 i, mvmvif->queue_params[i].txop,
273 mvmvif->queue_params[i].cw_min,
274 mvmvif->queue_params[i].cw_max,
275 mvmvif->queue_params[i].aifs,
276 mvmvif->queue_params[i].uapsd);
277
278 if (vif->type == NL80211_IFTYPE_STATION &&
279 ap_sta_id != IWL_MVM_INVALID_STA) {
280 struct iwl_mvm_sta *mvm_sta;
281
282 mvm_sta = iwl_mvm_sta_from_staid_protected(mvm, ap_sta_id);
283 if (mvm_sta) {
284 pos += scnprintf(buf+pos, bufsz-pos,
285 "ap_sta_id %d - reduced Tx power %d\n",
286 ap_sta_id,
287 mvm_sta->bt_reduced_txpower);
288 }
289 }
290
291 rcu_read_lock();
292 chanctx_conf = rcu_dereference(vif->chanctx_conf);
293 if (chanctx_conf)
294 pos += scnprintf(buf+pos, bufsz-pos,
295 "idle rx chains %d, active rx chains: %d\n",
296 chanctx_conf->rx_chains_static,
297 chanctx_conf->rx_chains_dynamic);
298 rcu_read_unlock();
299
300 mutex_unlock(&mvm->mutex);
301
302 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
303}
304
305static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
306 enum iwl_dbgfs_bf_mask param, int value)
307{
308 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
309 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
310
311 dbgfs_bf->mask |= param;
312
313 switch (param) {
314 case MVM_DEBUGFS_BF_ENERGY_DELTA:
315 dbgfs_bf->bf_energy_delta = value;
316 break;
317 case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
318 dbgfs_bf->bf_roaming_energy_delta = value;
319 break;
320 case MVM_DEBUGFS_BF_ROAMING_STATE:
321 dbgfs_bf->bf_roaming_state = value;
322 break;
323 case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
324 dbgfs_bf->bf_temp_threshold = value;
325 break;
326 case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
327 dbgfs_bf->bf_temp_fast_filter = value;
328 break;
329 case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
330 dbgfs_bf->bf_temp_slow_filter = value;
331 break;
332 case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
333 dbgfs_bf->bf_enable_beacon_filter = value;
334 break;
335 case MVM_DEBUGFS_BF_DEBUG_FLAG:
336 dbgfs_bf->bf_debug_flag = value;
337 break;
338 case MVM_DEBUGFS_BF_ESCAPE_TIMER:
339 dbgfs_bf->bf_escape_timer = value;
340 break;
341 case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
342 dbgfs_bf->ba_enable_beacon_abort = value;
343 break;
344 case MVM_DEBUGFS_BA_ESCAPE_TIMER:
345 dbgfs_bf->ba_escape_timer = value;
346 break;
347 }
348}
349
350static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf,
351 size_t count, loff_t *ppos)
352{
353 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
354 struct iwl_mvm *mvm = mvmvif->mvm;
355 enum iwl_dbgfs_bf_mask param;
356 int value, ret = 0;
357
358 if (!strncmp("bf_energy_delta=", buf, 16)) {
359 if (sscanf(buf+16, "%d", &value) != 1)
360 return -EINVAL;
361 if (value < IWL_BF_ENERGY_DELTA_MIN ||
362 value > IWL_BF_ENERGY_DELTA_MAX)
363 return -EINVAL;
364 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
365 } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
366 if (sscanf(buf+24, "%d", &value) != 1)
367 return -EINVAL;
368 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
369 value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
370 return -EINVAL;
371 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
372 } else if (!strncmp("bf_roaming_state=", buf, 17)) {
373 if (sscanf(buf+17, "%d", &value) != 1)
374 return -EINVAL;
375 if (value < IWL_BF_ROAMING_STATE_MIN ||
376 value > IWL_BF_ROAMING_STATE_MAX)
377 return -EINVAL;
378 param = MVM_DEBUGFS_BF_ROAMING_STATE;
379 } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
380 if (sscanf(buf+18, "%d", &value) != 1)
381 return -EINVAL;
382 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
383 value > IWL_BF_TEMP_THRESHOLD_MAX)
384 return -EINVAL;
385 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
386 } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
387 if (sscanf(buf+20, "%d", &value) != 1)
388 return -EINVAL;
389 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
390 value > IWL_BF_TEMP_FAST_FILTER_MAX)
391 return -EINVAL;
392 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
393 } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
394 if (sscanf(buf+20, "%d", &value) != 1)
395 return -EINVAL;
396 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
397 value > IWL_BF_TEMP_SLOW_FILTER_MAX)
398 return -EINVAL;
399 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
400 } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
401 if (sscanf(buf+24, "%d", &value) != 1)
402 return -EINVAL;
403 if (value < 0 || value > 1)
404 return -EINVAL;
405 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
406 } else if (!strncmp("bf_debug_flag=", buf, 14)) {
407 if (sscanf(buf+14, "%d", &value) != 1)
408 return -EINVAL;
409 if (value < 0 || value > 1)
410 return -EINVAL;
411 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
412 } else if (!strncmp("bf_escape_timer=", buf, 16)) {
413 if (sscanf(buf+16, "%d", &value) != 1)
414 return -EINVAL;
415 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
416 value > IWL_BF_ESCAPE_TIMER_MAX)
417 return -EINVAL;
418 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
419 } else if (!strncmp("ba_escape_timer=", buf, 16)) {
420 if (sscanf(buf+16, "%d", &value) != 1)
421 return -EINVAL;
422 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
423 value > IWL_BA_ESCAPE_TIMER_MAX)
424 return -EINVAL;
425 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
426 } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
427 if (sscanf(buf+23, "%d", &value) != 1)
428 return -EINVAL;
429 if (value < 0 || value > 1)
430 return -EINVAL;
431 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
432 } else {
433 return -EINVAL;
434 }
435
436 mutex_lock(&mvm->mutex);
437 iwl_dbgfs_update_bf(vif, param, value);
438 if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value)
439 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
440 else
441 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
442 mutex_unlock(&mvm->mutex);
443
444 return ret ?: count;
445}
446
447static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
448 char __user *user_buf,
449 size_t count, loff_t *ppos)
450{
451 struct ieee80211_vif *vif = file->private_data;
452 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
453 char buf[256];
454 int pos = 0;
455 const size_t bufsz = sizeof(buf);
456 struct iwl_beacon_filter_cmd cmd = {
457 IWL_BF_CMD_CONFIG_DEFAULTS,
458 .bf_enable_beacon_filter =
459 cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
460 .ba_enable_beacon_abort =
461 cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
462 };
463
464 iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
465 if (mvmvif->bf_data.bf_enabled)
466 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
467 else
468 cmd.bf_enable_beacon_filter = 0;
469
470 pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
471 le32_to_cpu(cmd.bf_energy_delta));
472 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
473 le32_to_cpu(cmd.bf_roaming_energy_delta));
474 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
475 le32_to_cpu(cmd.bf_roaming_state));
476 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
477 le32_to_cpu(cmd.bf_temp_threshold));
478 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
479 le32_to_cpu(cmd.bf_temp_fast_filter));
480 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
481 le32_to_cpu(cmd.bf_temp_slow_filter));
482 pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
483 le32_to_cpu(cmd.bf_enable_beacon_filter));
484 pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
485 le32_to_cpu(cmd.bf_debug_flag));
486 pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
487 le32_to_cpu(cmd.bf_escape_timer));
488 pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
489 le32_to_cpu(cmd.ba_escape_timer));
490 pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
491 le32_to_cpu(cmd.ba_enable_beacon_abort));
492
493 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
494}
495
496static inline char *iwl_dbgfs_is_match(char *name, char *buf)
497{
498 int len = strlen(name);
499
500 return !strncmp(name, buf, len) ? buf + len : NULL;
501}
502
503static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file,
504 char __user *user_buf,
505 size_t count, loff_t *ppos)
506{
507 struct ieee80211_vif *vif = file->private_data;
508 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
509 struct iwl_mvm *mvm = mvmvif->mvm;
510 u32 curr_gp2;
511 u64 curr_os;
512 s64 diff;
513 char buf[64];
514 const size_t bufsz = sizeof(buf);
515 int pos = 0;
516
517 iwl_mvm_get_sync_time(mvm, &curr_gp2, &curr_os);
518 do_div(curr_os, NSEC_PER_USEC);
519 diff = curr_os - curr_gp2;
520 pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff);
521
522 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
523}
524
525static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
526 size_t count, loff_t *ppos)
527{
528 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
529 struct iwl_mvm *mvm = mvmvif->mvm;
530 u8 value;
531 int ret;
532
533 ret = kstrtou8(buf, 0, &value);
534 if (ret)
535 return ret;
536 if (value > 1)
537 return -EINVAL;
538
539 mutex_lock(&mvm->mutex);
540 iwl_mvm_update_low_latency(mvm, vif, value, LOW_LATENCY_DEBUGFS);
541 mutex_unlock(&mvm->mutex);
542
543 return count;
544}
545
546static ssize_t
547iwl_dbgfs_low_latency_force_write(struct ieee80211_vif *vif, char *buf,
548 size_t count, loff_t *ppos)
549{
550 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
551 struct iwl_mvm *mvm = mvmvif->mvm;
552 u8 value;
553 int ret;
554
555 ret = kstrtou8(buf, 0, &value);
556 if (ret)
557 return ret;
558
559 if (value > NUM_LOW_LATENCY_FORCE)
560 return -EINVAL;
561
562 mutex_lock(&mvm->mutex);
563 if (value == LOW_LATENCY_FORCE_UNSET) {
564 iwl_mvm_update_low_latency(mvm, vif, false,
565 LOW_LATENCY_DEBUGFS_FORCE);
566 iwl_mvm_update_low_latency(mvm, vif, false,
567 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
568 } else {
569 iwl_mvm_update_low_latency(mvm, vif,
570 value == LOW_LATENCY_FORCE_ON,
571 LOW_LATENCY_DEBUGFS_FORCE);
572 iwl_mvm_update_low_latency(mvm, vif, true,
573 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
574 }
575 mutex_unlock(&mvm->mutex);
576 return count;
577}
578
579static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
580 char __user *user_buf,
581 size_t count, loff_t *ppos)
582{
583 struct ieee80211_vif *vif = file->private_data;
584 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
585 char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n"
586 "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n";
587
588 /*
589 * all values in format are boolean so the size of format is enough
590 * for holding the result string
591 */
592 char buf[sizeof(format) + 1] = {};
593 int len;
594
595 len = scnprintf(buf, sizeof(buf) - 1, format,
596 !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC),
597 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS),
598 !!(mvmvif->low_latency & LOW_LATENCY_VCMD),
599 !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE),
600 !!(mvmvif->low_latency &
601 LOW_LATENCY_DEBUGFS_FORCE_ENABLE),
602 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE),
603 !!(mvmvif->low_latency_actual));
604 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
605}
606
607static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file,
608 char __user *user_buf,
609 size_t count, loff_t *ppos)
610{
611 struct ieee80211_vif *vif = file->private_data;
612 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
613 char buf[20];
614 int len;
615
616 len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_bssid);
617 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
618}
619
620static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif,
621 char *buf, size_t count,
622 loff_t *ppos)
623{
624 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
625 struct iwl_mvm *mvm = mvmvif->mvm;
626 bool ret;
627
628 mutex_lock(&mvm->mutex);
629 ret = mac_pton(buf, mvmvif->uapsd_misbehaving_bssid);
630 mutex_unlock(&mvm->mutex);
631
632 return ret ? count : -EINVAL;
633}
634
635static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf,
636 size_t count, loff_t *ppos)
637{
638 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
639 struct iwl_mvm *mvm = mvmvif->mvm;
640 struct ieee80211_chanctx_conf *chanctx_conf;
641 struct iwl_mvm_phy_ctxt *phy_ctxt;
642 u16 value;
643 int ret;
644
645 ret = kstrtou16(buf, 0, &value);
646 if (ret)
647 return ret;
648
649 mutex_lock(&mvm->mutex);
650 rcu_read_lock();
651
652 chanctx_conf = rcu_dereference(vif->chanctx_conf);
653 /* make sure the channel context is assigned */
654 if (!chanctx_conf) {
655 rcu_read_unlock();
656 mutex_unlock(&mvm->mutex);
657 return -EINVAL;
658 }
659
660 phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv];
661 rcu_read_unlock();
662
663 mvm->dbgfs_rx_phyinfo = value;
664
665 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def,
666 chanctx_conf->rx_chains_static,
667 chanctx_conf->rx_chains_dynamic);
668 mutex_unlock(&mvm->mutex);
669
670 return ret ?: count;
671}
672
673static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
674 char __user *user_buf,
675 size_t count, loff_t *ppos)
676{
677 struct ieee80211_vif *vif = file->private_data;
678 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
679 char buf[8];
680 int len;
681
682 len = scnprintf(buf, sizeof(buf), "0x%04x\n",
683 mvmvif->mvm->dbgfs_rx_phyinfo);
684
685 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
686}
687
688static void iwl_dbgfs_quota_check(void *data, u8 *mac,
689 struct ieee80211_vif *vif)
690{
691 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
692 int *ret = data;
693
694 if (mvmvif->dbgfs_quota_min)
695 *ret = -EINVAL;
696}
697
698static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf,
699 size_t count, loff_t *ppos)
700{
701 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
702 struct iwl_mvm *mvm = mvmvif->mvm;
703 u16 value;
704 int ret;
705
706 ret = kstrtou16(buf, 0, &value);
707 if (ret)
708 return ret;
709
710 if (value > 95)
711 return -EINVAL;
712
713 mutex_lock(&mvm->mutex);
714
715 mvmvif->dbgfs_quota_min = 0;
716 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
717 iwl_dbgfs_quota_check, &ret);
718 if (ret == 0) {
719 mvmvif->dbgfs_quota_min = value;
720 iwl_mvm_update_quotas(mvm, false, NULL);
721 }
722 mutex_unlock(&mvm->mutex);
723
724 return ret ?: count;
725}
726
727static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
728 char __user *user_buf,
729 size_t count, loff_t *ppos)
730{
731 struct ieee80211_vif *vif = file->private_data;
732 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
733 char buf[10];
734 int len;
735
736 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min);
737
738 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
739}
740
741#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
742 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
743#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
744 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
745#define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
746 debugfs_create_file(#name, mode, parent, vif, \
747 &iwl_dbgfs_##name##_ops); \
748 } while (0)
749
750MVM_DEBUGFS_READ_FILE_OPS(mac_params);
751MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
752MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
753MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
754MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
755MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10);
756MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
757MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);
758MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
759MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff);
760
761
762void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
763{
764 struct dentry *dbgfs_dir = vif->debugfs_dir;
765 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
766 char buf[100];
767
768 /*
769 * Check if debugfs directory already exist before creating it.
770 * This may happen when, for example, resetting hw or suspend-resume
771 */
772 if (!dbgfs_dir || mvmvif->dbgfs_dir)
773 return;
774
775 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
776 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) {
777 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
778 dbgfs_dir);
779 return;
780 }
781
782 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
783 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
784 (vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
785 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600);
786
787 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400);
788 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400);
789 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600);
790 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600);
791 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600);
792 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
793 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
794 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
795
796 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
797 mvmvif == mvm->bf_allowed_vif)
798 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600);
799
800 /*
801 * Create symlink for convenience pointing to interface specific
802 * debugfs entries for the driver. For example, under
803 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
804 * find
805 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
806 */
807 snprintf(buf, 100, "../../../%pd3/%pd",
808 dbgfs_dir,
809 mvmvif->dbgfs_dir);
810
811 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
812 mvm->debugfs_dir, buf);
813}
814
815void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
816{
817 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
818
819 debugfs_remove(mvmvif->dbgfs_slink);
820 mvmvif->dbgfs_slink = NULL;
821
822 debugfs_remove_recursive(mvmvif->dbgfs_dir);
823 mvmvif->dbgfs_dir = NULL;
824}