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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->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->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->queue_params[i].txop,
218 mvmvif->queue_params[i].cw_min,
219 mvmvif->queue_params[i].cw_max,
220 mvmvif->queue_params[i].aifs,
221 mvmvif->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->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 inline char *iwl_dbgfs_is_match(char *name, char *buf)
442{
443 int len = strlen(name);
444
445 return !strncmp(name, buf, len) ? buf + len : NULL;
446}
447
448static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file,
449 char __user *user_buf,
450 size_t count, loff_t *ppos)
451{
452 struct ieee80211_vif *vif = file->private_data;
453 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
454 struct iwl_mvm *mvm = mvmvif->mvm;
455 u32 curr_gp2;
456 u64 curr_os;
457 s64 diff;
458 char buf[64];
459 const size_t bufsz = sizeof(buf);
460 int pos = 0;
461
462 mutex_lock(&mvm->mutex);
463 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, &curr_os, NULL);
464 mutex_unlock(&mvm->mutex);
465
466 do_div(curr_os, NSEC_PER_USEC);
467 diff = curr_os - curr_gp2;
468 pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff);
469
470 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
471}
472
473static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
474 size_t count, loff_t *ppos)
475{
476 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
477 struct iwl_mvm *mvm = mvmvif->mvm;
478 u8 value;
479 int ret;
480
481 ret = kstrtou8(buf, 0, &value);
482 if (ret)
483 return ret;
484 if (value > 1)
485 return -EINVAL;
486
487 mutex_lock(&mvm->mutex);
488 iwl_mvm_update_low_latency(mvm, vif, value, LOW_LATENCY_DEBUGFS);
489 mutex_unlock(&mvm->mutex);
490
491 return count;
492}
493
494static ssize_t
495iwl_dbgfs_low_latency_force_write(struct ieee80211_vif *vif, char *buf,
496 size_t count, loff_t *ppos)
497{
498 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
499 struct iwl_mvm *mvm = mvmvif->mvm;
500 u8 value;
501 int ret;
502
503 ret = kstrtou8(buf, 0, &value);
504 if (ret)
505 return ret;
506
507 if (value > NUM_LOW_LATENCY_FORCE)
508 return -EINVAL;
509
510 mutex_lock(&mvm->mutex);
511 if (value == LOW_LATENCY_FORCE_UNSET) {
512 iwl_mvm_update_low_latency(mvm, vif, false,
513 LOW_LATENCY_DEBUGFS_FORCE);
514 iwl_mvm_update_low_latency(mvm, vif, false,
515 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
516 } else {
517 iwl_mvm_update_low_latency(mvm, vif,
518 value == LOW_LATENCY_FORCE_ON,
519 LOW_LATENCY_DEBUGFS_FORCE);
520 iwl_mvm_update_low_latency(mvm, vif, true,
521 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
522 }
523 mutex_unlock(&mvm->mutex);
524 return count;
525}
526
527static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
528 char __user *user_buf,
529 size_t count, loff_t *ppos)
530{
531 struct ieee80211_vif *vif = file->private_data;
532 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
533 char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n"
534 "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n";
535
536
537
538
539
540 char buf[sizeof(format) + 1] = {};
541 int len;
542
543 len = scnprintf(buf, sizeof(buf) - 1, format,
544 !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC),
545 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS),
546 !!(mvmvif->low_latency & LOW_LATENCY_VCMD),
547 !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE),
548 !!(mvmvif->low_latency &
549 LOW_LATENCY_DEBUGFS_FORCE_ENABLE),
550 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE),
551 !!(mvmvif->low_latency_actual));
552 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
553}
554
555static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file,
556 char __user *user_buf,
557 size_t count, loff_t *ppos)
558{
559 struct ieee80211_vif *vif = file->private_data;
560 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
561 char buf[20];
562 int len;
563
564 len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_bssid);
565 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
566}
567
568static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif,
569 char *buf, size_t count,
570 loff_t *ppos)
571{
572 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
573 struct iwl_mvm *mvm = mvmvif->mvm;
574 bool ret;
575
576 mutex_lock(&mvm->mutex);
577 ret = mac_pton(buf, mvmvif->uapsd_misbehaving_bssid);
578 mutex_unlock(&mvm->mutex);
579
580 return ret ? count : -EINVAL;
581}
582
583static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf,
584 size_t count, loff_t *ppos)
585{
586 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
587 struct iwl_mvm *mvm = mvmvif->mvm;
588 struct ieee80211_chanctx_conf *chanctx_conf;
589 struct iwl_mvm_phy_ctxt *phy_ctxt;
590 u16 value;
591 int ret;
592
593 ret = kstrtou16(buf, 0, &value);
594 if (ret)
595 return ret;
596
597 mutex_lock(&mvm->mutex);
598 rcu_read_lock();
599
600 chanctx_conf = rcu_dereference(vif->chanctx_conf);
601
602 if (!chanctx_conf) {
603 rcu_read_unlock();
604 mutex_unlock(&mvm->mutex);
605 return -EINVAL;
606 }
607
608 phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv];
609 rcu_read_unlock();
610
611 mvm->dbgfs_rx_phyinfo = value;
612
613 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def,
614 chanctx_conf->rx_chains_static,
615 chanctx_conf->rx_chains_dynamic);
616 mutex_unlock(&mvm->mutex);
617
618 return ret ?: count;
619}
620
621static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
622 char __user *user_buf,
623 size_t count, loff_t *ppos)
624{
625 struct ieee80211_vif *vif = file->private_data;
626 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
627 char buf[8];
628 int len;
629
630 len = scnprintf(buf, sizeof(buf), "0x%04x\n",
631 mvmvif->mvm->dbgfs_rx_phyinfo);
632
633 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
634}
635
636static void iwl_dbgfs_quota_check(void *data, u8 *mac,
637 struct ieee80211_vif *vif)
638{
639 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
640 int *ret = data;
641
642 if (mvmvif->dbgfs_quota_min)
643 *ret = -EINVAL;
644}
645
646static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf,
647 size_t count, loff_t *ppos)
648{
649 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
650 struct iwl_mvm *mvm = mvmvif->mvm;
651 u16 value;
652 int ret;
653
654 ret = kstrtou16(buf, 0, &value);
655 if (ret)
656 return ret;
657
658 if (value > 95)
659 return -EINVAL;
660
661 mutex_lock(&mvm->mutex);
662
663 mvmvif->dbgfs_quota_min = 0;
664 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
665 iwl_dbgfs_quota_check, &ret);
666 if (ret == 0) {
667 mvmvif->dbgfs_quota_min = value;
668 iwl_mvm_update_quotas(mvm, false, NULL);
669 }
670 mutex_unlock(&mvm->mutex);
671
672 return ret ?: count;
673}
674
675static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
676 char __user *user_buf,
677 size_t count, loff_t *ppos)
678{
679 struct ieee80211_vif *vif = file->private_data;
680 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
681 char buf[10];
682 int len;
683
684 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min);
685
686 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
687}
688
689#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
690 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
691#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
692 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
693#define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
694 debugfs_create_file(#name, mode, parent, vif, \
695 &iwl_dbgfs_##name##_ops); \
696 } while (0)
697
698MVM_DEBUGFS_READ_FILE_OPS(mac_params);
699MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
700MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
701MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
702MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
703MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10);
704MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
705MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);
706MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
707MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff);
708
709
710void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
711{
712 struct dentry *dbgfs_dir = vif->debugfs_dir;
713 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
714 char buf[100];
715
716
717
718
719
720 if (!dbgfs_dir || mvmvif->dbgfs_dir)
721 return;
722
723 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
724 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) {
725 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
726 dbgfs_dir);
727 return;
728 }
729
730 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
731 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
732 (vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
733 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600);
734
735 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400);
736 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400);
737 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600);
738 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600);
739 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600);
740 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
741 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
742 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
743
744 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
745 mvmvif == mvm->bf_allowed_vif)
746 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600);
747
748
749
750
751
752
753
754
755 snprintf(buf, 100, "../../../%pd3/%pd",
756 dbgfs_dir,
757 mvmvif->dbgfs_dir);
758
759 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
760 mvm->debugfs_dir, buf);
761}
762
763void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
764{
765 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
766
767 debugfs_remove(mvmvif->dbgfs_slink);
768 mvmvif->dbgfs_slink = NULL;
769
770 debugfs_remove_recursive(mvmvif->dbgfs_dir);
771 mvmvif->dbgfs_dir = NULL;
772}
773
