1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2024 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
iwl_dbgfs_update_pm(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum iwl_dbgfs_pm_mask param,int val)10 static 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
iwl_dbgfs_pm_params_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)72 static 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
iwl_dbgfs_tx_pwr_lmt_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)135 static 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
iwl_dbgfs_pm_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)150 static 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
iwl_dbgfs_mac_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)166 static 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
iwl_dbgfs_update_bf(struct ieee80211_vif * vif,enum iwl_dbgfs_bf_mask param,int value)250 static 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
iwl_dbgfs_bf_params_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)295 static 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);
385 else
386 ret = iwl_mvm_enable_beacon_filter(mvm, vif);
387 mutex_unlock(&mvm->mutex);
388
389 return ret ?: count;
390 }
391
iwl_dbgfs_bf_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)392 static 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_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
iwl_dbgfs_os_device_timediff_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)441 static 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
iwl_dbgfs_low_latency_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)466 static 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
487 static ssize_t
iwl_dbgfs_low_latency_force_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)488 iwl_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
iwl_dbgfs_low_latency_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)520 static 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
iwl_dbgfs_uapsd_misbehaving_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)548 static 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
iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)561 static 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
iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)576 static 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_bss_conf *link_conf;
582 u16 value;
583 int link_id, ret = -EINVAL;
584
585 ret = kstrtou16(buf, 0, &value);
586 if (ret)
587 return ret;
588
589 mutex_lock(&mvm->mutex);
590
591 mvm->dbgfs_rx_phyinfo = value;
592
593 for_each_vif_active_link(vif, link_conf, link_id) {
594 struct ieee80211_chanctx_conf *chanctx_conf;
595 struct cfg80211_chan_def min_def, ap_def;
596 struct iwl_mvm_phy_ctxt *phy_ctxt;
597 u8 chains_static, chains_dynamic;
598
599 rcu_read_lock();
600 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
601 if (!chanctx_conf) {
602 rcu_read_unlock();
603 continue;
604 }
605 /* A command can't be sent with RCU lock held, so copy
606 * everything here and use it after unlocking
607 */
608 min_def = chanctx_conf->min_def;
609 ap_def = chanctx_conf->ap;
610 chains_static = chanctx_conf->rx_chains_static;
611 chains_dynamic = chanctx_conf->rx_chains_dynamic;
612 rcu_read_unlock();
613
614 phy_ctxt = mvmvif->link[link_id]->phy_ctxt;
615 if (!phy_ctxt)
616 continue;
617
618 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &min_def, &ap_def,
619 chains_static, chains_dynamic);
620 }
621
622 mutex_unlock(&mvm->mutex);
623
624 return ret ?: count;
625 }
626
iwl_dbgfs_rx_phyinfo_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)627 static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
628 char __user *user_buf,
629 size_t count, loff_t *ppos)
630 {
631 struct ieee80211_vif *vif = file->private_data;
632 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
633 char buf[8];
634 int len;
635
636 len = scnprintf(buf, sizeof(buf), "0x%04x\n",
637 mvmvif->mvm->dbgfs_rx_phyinfo);
638
639 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
640 }
641
iwl_dbgfs_quota_check(void * data,u8 * mac,struct ieee80211_vif * vif)642 static void iwl_dbgfs_quota_check(void *data, u8 *mac,
643 struct ieee80211_vif *vif)
644 {
645 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
646 int *ret = data;
647
648 if (mvmvif->dbgfs_quota_min)
649 *ret = -EINVAL;
650 }
651
iwl_dbgfs_quota_min_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)652 static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf,
653 size_t count, loff_t *ppos)
654 {
655 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
656 struct iwl_mvm *mvm = mvmvif->mvm;
657 u16 value;
658 int ret;
659
660 ret = kstrtou16(buf, 0, &value);
661 if (ret)
662 return ret;
663
664 if (value > 95)
665 return -EINVAL;
666
667 mutex_lock(&mvm->mutex);
668
669 mvmvif->dbgfs_quota_min = 0;
670 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
671 iwl_dbgfs_quota_check, &ret);
672 if (ret == 0) {
673 mvmvif->dbgfs_quota_min = value;
674 iwl_mvm_update_quotas(mvm, false, NULL);
675 }
676 mutex_unlock(&mvm->mutex);
677
678 return ret ?: count;
679 }
680
iwl_dbgfs_quota_min_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)681 static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
682 char __user *user_buf,
683 size_t count, loff_t *ppos)
684 {
685 struct ieee80211_vif *vif = file->private_data;
686 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
687 char buf[10];
688 int len;
689
690 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min);
691
692 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
693 }
694
iwl_dbgfs_max_tx_op_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)695 static ssize_t iwl_dbgfs_max_tx_op_write(struct ieee80211_vif *vif, char *buf,
696 size_t count, loff_t *ppos)
697 {
698 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
699 struct iwl_mvm *mvm = mvmvif->mvm;
700 u16 value;
701 int ret;
702
703 ret = kstrtou16(buf, 0, &value);
704 if (ret)
705 return ret;
706
707 mutex_lock(&mvm->mutex);
708 mvmvif->max_tx_op = value;
709 mutex_unlock(&mvm->mutex);
710
711 return count;
712 }
713
iwl_dbgfs_max_tx_op_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)714 static ssize_t iwl_dbgfs_max_tx_op_read(struct file *file,
715 char __user *user_buf,
716 size_t count, loff_t *ppos)
717 {
718 struct ieee80211_vif *vif = file->private_data;
719 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
720 struct iwl_mvm *mvm = mvmvif->mvm;
721 char buf[10];
722 int len;
723
724 mutex_lock(&mvm->mutex);
725 len = scnprintf(buf, sizeof(buf), "%hu\n", mvmvif->max_tx_op);
726 mutex_unlock(&mvm->mutex);
727
728 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
729 }
730
iwl_dbgfs_int_mlo_scan_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)731 static ssize_t iwl_dbgfs_int_mlo_scan_write(struct ieee80211_vif *vif,
732 char *buf, size_t count,
733 loff_t *ppos)
734 {
735 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
736 struct iwl_mvm *mvm = mvmvif->mvm;
737 u32 action;
738 int ret;
739
740 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif))
741 return -EINVAL;
742
743 if (kstrtou32(buf, 0, &action))
744 return -EINVAL;
745
746 mutex_lock(&mvm->mutex);
747
748 if (!action) {
749 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_INT_MLO, false);
750 } else if (action == 1) {
751 ret = iwl_mvm_int_mlo_scan(mvm, vif);
752 } else {
753 ret = -EINVAL;
754 }
755
756 mutex_unlock(&mvm->mutex);
757
758 return ret ?: count;
759 }
760
iwl_dbgfs_esr_disable_reason_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)761 static ssize_t iwl_dbgfs_esr_disable_reason_read(struct file *file,
762 char __user *user_buf,
763 size_t count, loff_t *ppos)
764 {
765 struct ieee80211_vif *vif = file->private_data;
766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
767 struct iwl_mvm *mvm = mvmvif->mvm;
768 unsigned long esr_mask;
769 char *buf;
770 int bufsz, pos, i;
771 ssize_t rv;
772
773 mutex_lock(&mvm->mutex);
774 esr_mask = mvmvif->esr_disable_reason;
775 mutex_unlock(&mvm->mutex);
776
777 bufsz = hweight32(esr_mask) * 32 + 40;
778 buf = kmalloc(bufsz, GFP_KERNEL);
779 if (!buf)
780 return -ENOMEM;
781
782 pos = scnprintf(buf, bufsz, "EMLSR state: '0x%lx'\nreasons:\n",
783 esr_mask);
784 for_each_set_bit(i, &esr_mask, BITS_PER_LONG)
785 pos += scnprintf(buf + pos, bufsz - pos, " - %s\n",
786 iwl_get_esr_state_string(BIT(i)));
787
788 rv = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
789 kfree(buf);
790 return rv;
791 }
792
iwl_dbgfs_esr_disable_reason_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)793 static ssize_t iwl_dbgfs_esr_disable_reason_write(struct ieee80211_vif *vif,
794 char *buf, size_t count,
795 loff_t *ppos)
796 {
797 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
798 struct iwl_mvm *mvm = mvmvif->mvm;
799 u32 reason;
800 u8 block;
801 int ret;
802
803 ret = sscanf(buf, "%u %hhu", &reason, &block);
804 if (ret < 0)
805 return ret;
806
807 if (hweight16(reason) != 1 || !(reason & IWL_MVM_BLOCK_ESR_REASONS))
808 return -EINVAL;
809
810 mutex_lock(&mvm->mutex);
811 if (block)
812 iwl_mvm_block_esr(mvm, vif, reason,
813 iwl_mvm_get_primary_link(vif));
814 else
815 iwl_mvm_unblock_esr(mvm, vif, reason);
816 mutex_unlock(&mvm->mutex);
817
818 return count;
819 }
820
821 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
822 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
823 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
824 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
825 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
826 debugfs_create_file(#name, mode, parent, vif, \
827 &iwl_dbgfs_##name##_ops); \
828 } while (0)
829
830 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
831 MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
832 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
833 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
834 MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
835 MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10);
836 MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
837 MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);
838 MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
839 MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff);
840 MVM_DEBUGFS_READ_WRITE_FILE_OPS(max_tx_op, 10);
841 MVM_DEBUGFS_WRITE_FILE_OPS(int_mlo_scan, 32);
842 MVM_DEBUGFS_READ_WRITE_FILE_OPS(esr_disable_reason, 32);
843
iwl_mvm_vif_add_debugfs(struct ieee80211_hw * hw,struct ieee80211_vif * vif)844 void iwl_mvm_vif_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
845 {
846 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
847 struct dentry *dbgfs_dir = vif->debugfs_dir;
848 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
849
850 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
851 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) {
852 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
853 dbgfs_dir);
854 return;
855 }
856
857 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
858 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
859 (vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
860 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600);
861
862 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400);
863 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400);
864 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600);
865 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600);
866 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600);
867 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
868 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
869 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
870 MVM_DEBUGFS_ADD_FILE_VIF(max_tx_op, mvmvif->dbgfs_dir, 0600);
871 debugfs_create_bool("ftm_unprotected", 0200, mvmvif->dbgfs_dir,
872 &mvmvif->ftm_unprotected);
873 MVM_DEBUGFS_ADD_FILE_VIF(int_mlo_scan, mvmvif->dbgfs_dir, 0200);
874 MVM_DEBUGFS_ADD_FILE_VIF(esr_disable_reason, mvmvif->dbgfs_dir, 0600);
875
876 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
877 mvmvif == mvm->bf_allowed_vif)
878 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600);
879 }
880
iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm * mvm,struct ieee80211_vif * vif)881 void iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
882 {
883 struct dentry *dbgfs_dir = vif->debugfs_dir;
884 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
885 char buf[3 * 3 + 11 + (NL80211_WIPHY_NAME_MAXLEN + 1) +
886 (7 + IFNAMSIZ + 1) + 6 + 1];
887 char name[7 + IFNAMSIZ + 1];
888
889 /* this will happen in monitor mode */
890 if (!dbgfs_dir)
891 return;
892
893 /*
894 * Create symlink for convenience pointing to interface specific
895 * debugfs entries for the driver. For example, under
896 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
897 * find
898 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
899 */
900 snprintf(name, sizeof(name), "%pd", dbgfs_dir);
901 snprintf(buf, sizeof(buf), "../../../%pd3/iwlmvm", dbgfs_dir);
902
903 mvmvif->dbgfs_slink =
904 debugfs_create_symlink(name, mvm->debugfs_dir, buf);
905 }
906
iwl_mvm_vif_dbgfs_rm_link(struct iwl_mvm * mvm,struct ieee80211_vif * vif)907 void iwl_mvm_vif_dbgfs_rm_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
908 {
909 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
910
911 debugfs_remove(mvmvif->dbgfs_slink);
912 mvmvif->dbgfs_slink = NULL;
913 }
914
915 #define MVM_DEBUGFS_WRITE_LINK_FILE_OPS(name, bufsz) \
916 _MVM_DEBUGFS_WRITE_FILE_OPS(link_##name, bufsz, \
917 struct ieee80211_bss_conf)
918 #define MVM_DEBUGFS_READ_WRITE_LINK_FILE_OPS(name, bufsz) \
919 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(link_##name, bufsz, \
920 struct ieee80211_bss_conf)
921 #define MVM_DEBUGFS_ADD_LINK_FILE(name, parent, mode) \
922 debugfs_create_file(#name, mode, parent, link_conf, \
923 &iwl_dbgfs_link_##name##_ops)
924
iwl_mvm_debugfs_add_link_files(struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct dentry * mvm_dir)925 static void iwl_mvm_debugfs_add_link_files(struct ieee80211_vif *vif,
926 struct ieee80211_bss_conf *link_conf,
927 struct dentry *mvm_dir)
928 {
929 /* Add per-link files here*/
930 }
931
iwl_mvm_link_add_debugfs(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct dentry * dir)932 void iwl_mvm_link_add_debugfs(struct ieee80211_hw *hw,
933 struct ieee80211_vif *vif,
934 struct ieee80211_bss_conf *link_conf,
935 struct dentry *dir)
936 {
937 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
938 struct iwl_mvm *mvm = mvmvif->mvm;
939 unsigned int link_id = link_conf->link_id;
940 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
941 struct dentry *mvm_dir;
942
943 if (WARN_ON(!link_info) || !dir)
944 return;
945
946 if (dir == vif->debugfs_dir) {
947 WARN_ON(!mvmvif->dbgfs_dir);
948 mvm_dir = mvmvif->dbgfs_dir;
949 } else {
950 mvm_dir = debugfs_create_dir("iwlmvm", dir);
951 if (IS_ERR_OR_NULL(mvm_dir)) {
952 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
953 dir);
954 return;
955 }
956 }
957
958 iwl_mvm_debugfs_add_link_files(vif, link_conf, mvm_dir);
959 }
960