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 #if defined(__FreeBSD__)
10 #include <linux/math64.h>
11 #endif
12
iwl_dbgfs_update_pm(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum iwl_dbgfs_pm_mask param,int val)13 static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
14 struct ieee80211_vif *vif,
15 enum iwl_dbgfs_pm_mask param, int val)
16 {
17 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
18 struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
19
20 dbgfs_pm->mask |= param;
21
22 switch (param) {
23 case MVM_DEBUGFS_PM_KEEP_ALIVE: {
24 int dtimper = vif->bss_conf.dtim_period ?: 1;
25 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
26
27 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
28 if (val * MSEC_PER_SEC < 3 * dtimper_msec)
29 IWL_WARN(mvm,
30 "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
31 val * MSEC_PER_SEC, 3 * dtimper_msec);
32 dbgfs_pm->keep_alive_seconds = val;
33 break;
34 }
35 case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
36 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
37 val ? "enabled" : "disabled");
38 dbgfs_pm->skip_over_dtim = val;
39 break;
40 case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
41 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
42 dbgfs_pm->skip_dtim_periods = val;
43 break;
44 case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
45 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
46 dbgfs_pm->rx_data_timeout = val;
47 break;
48 case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
49 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
50 dbgfs_pm->tx_data_timeout = val;
51 break;
52 case MVM_DEBUGFS_PM_LPRX_ENA:
53 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
54 dbgfs_pm->lprx_ena = val;
55 break;
56 case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
57 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
58 dbgfs_pm->lprx_rssi_threshold = val;
59 break;
60 case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
61 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
62 dbgfs_pm->snooze_ena = val;
63 break;
64 case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING:
65 IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val);
66 dbgfs_pm->uapsd_misbehaving = val;
67 break;
68 case MVM_DEBUGFS_PM_USE_PS_POLL:
69 IWL_DEBUG_POWER(mvm, "use_ps_poll=%d\n", val);
70 dbgfs_pm->use_ps_poll = val;
71 break;
72 }
73 }
74
iwl_dbgfs_pm_params_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)75 static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
76 size_t count, loff_t *ppos)
77 {
78 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
79 struct iwl_mvm *mvm = mvmvif->mvm;
80 enum iwl_dbgfs_pm_mask param;
81 int val, ret;
82
83 if (!strncmp("keep_alive=", buf, 11)) {
84 if (sscanf(buf + 11, "%d", &val) != 1)
85 return -EINVAL;
86 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
87 } else if (!strncmp("skip_over_dtim=", buf, 15)) {
88 if (sscanf(buf + 15, "%d", &val) != 1)
89 return -EINVAL;
90 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
91 } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
92 if (sscanf(buf + 18, "%d", &val) != 1)
93 return -EINVAL;
94 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
95 } else if (!strncmp("rx_data_timeout=", buf, 16)) {
96 if (sscanf(buf + 16, "%d", &val) != 1)
97 return -EINVAL;
98 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
99 } else if (!strncmp("tx_data_timeout=", buf, 16)) {
100 if (sscanf(buf + 16, "%d", &val) != 1)
101 return -EINVAL;
102 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
103 } else if (!strncmp("lprx=", buf, 5)) {
104 if (sscanf(buf + 5, "%d", &val) != 1)
105 return -EINVAL;
106 param = MVM_DEBUGFS_PM_LPRX_ENA;
107 } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
108 if (sscanf(buf + 20, "%d", &val) != 1)
109 return -EINVAL;
110 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
111 POWER_LPRX_RSSI_THRESHOLD_MIN)
112 return -EINVAL;
113 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
114 } else if (!strncmp("snooze_enable=", buf, 14)) {
115 if (sscanf(buf + 14, "%d", &val) != 1)
116 return -EINVAL;
117 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
118 } else if (!strncmp("uapsd_misbehaving=", buf, 18)) {
119 if (sscanf(buf + 18, "%d", &val) != 1)
120 return -EINVAL;
121 param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING;
122 } else if (!strncmp("use_ps_poll=", buf, 12)) {
123 if (sscanf(buf + 12, "%d", &val) != 1)
124 return -EINVAL;
125 param = MVM_DEBUGFS_PM_USE_PS_POLL;
126 } else {
127 return -EINVAL;
128 }
129
130 mutex_lock(&mvm->mutex);
131 iwl_dbgfs_update_pm(mvm, vif, param, val);
132 ret = iwl_mvm_power_update_mac(mvm);
133 mutex_unlock(&mvm->mutex);
134
135 return ret ?: count;
136 }
137
iwl_dbgfs_tx_pwr_lmt_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)138 static ssize_t iwl_dbgfs_tx_pwr_lmt_read(struct file *file,
139 char __user *user_buf,
140 size_t count, loff_t *ppos)
141 {
142 struct ieee80211_vif *vif = file->private_data;
143 char buf[64];
144 int bufsz = sizeof(buf);
145 int pos;
146
147 pos = scnprintf(buf, bufsz, "bss limit = %d\n",
148 vif->bss_conf.txpower);
149
150 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
151 }
152
iwl_dbgfs_pm_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)153 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
154 char __user *user_buf,
155 size_t count, loff_t *ppos)
156 {
157 struct ieee80211_vif *vif = file->private_data;
158 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
159 struct iwl_mvm *mvm = mvmvif->mvm;
160 char buf[512];
161 int bufsz = sizeof(buf);
162 int pos;
163
164 pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz);
165
166 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
167 }
168
iwl_dbgfs_mac_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)169 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
170 char __user *user_buf,
171 size_t count, loff_t *ppos)
172 {
173 struct ieee80211_vif *vif = file->private_data;
174 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
175 struct iwl_mvm *mvm = mvmvif->mvm;
176 u8 ap_sta_id;
177 struct ieee80211_chanctx_conf *chanctx_conf;
178 char buf[512];
179 int bufsz = sizeof(buf);
180 int pos = 0;
181 int i;
182
183 mutex_lock(&mvm->mutex);
184
185 ap_sta_id = mvmvif->deflink.ap_sta_id;
186
187 switch (ieee80211_vif_type_p2p(vif)) {
188 case NL80211_IFTYPE_ADHOC:
189 pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n");
190 break;
191 case NL80211_IFTYPE_STATION:
192 pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n");
193 break;
194 case NL80211_IFTYPE_AP:
195 pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n");
196 break;
197 case NL80211_IFTYPE_P2P_CLIENT:
198 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n");
199 break;
200 case NL80211_IFTYPE_P2P_GO:
201 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n");
202 break;
203 case NL80211_IFTYPE_P2P_DEVICE:
204 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n");
205 break;
206 default:
207 break;
208 }
209
210 pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
211 mvmvif->id, mvmvif->color);
212 pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
213 vif->bss_conf.bssid);
214 pos += scnprintf(buf+pos, bufsz-pos, "Load: %d\n",
215 mvm->tcm.result.load[mvmvif->id]);
216 pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
217 for (i = 0; i < ARRAY_SIZE(mvmvif->deflink.queue_params); i++)
218 pos += scnprintf(buf+pos, bufsz-pos,
219 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
220 i, mvmvif->deflink.queue_params[i].txop,
221 mvmvif->deflink.queue_params[i].cw_min,
222 mvmvif->deflink.queue_params[i].cw_max,
223 mvmvif->deflink.queue_params[i].aifs,
224 mvmvif->deflink.queue_params[i].uapsd);
225
226 if (vif->type == NL80211_IFTYPE_STATION &&
227 ap_sta_id != IWL_MVM_INVALID_STA) {
228 struct iwl_mvm_sta *mvm_sta;
229
230 mvm_sta = iwl_mvm_sta_from_staid_protected(mvm, ap_sta_id);
231 if (mvm_sta) {
232 pos += scnprintf(buf+pos, bufsz-pos,
233 "ap_sta_id %d - reduced Tx power %d\n",
234 ap_sta_id,
235 mvm_sta->bt_reduced_txpower);
236 }
237 }
238
239 rcu_read_lock();
240 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
241 if (chanctx_conf)
242 pos += scnprintf(buf+pos, bufsz-pos,
243 "idle rx chains %d, active rx chains: %d\n",
244 chanctx_conf->rx_chains_static,
245 chanctx_conf->rx_chains_dynamic);
246 rcu_read_unlock();
247
248 mutex_unlock(&mvm->mutex);
249
250 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
251 }
252
iwl_dbgfs_update_bf(struct ieee80211_vif * vif,enum iwl_dbgfs_bf_mask param,int value)253 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
254 enum iwl_dbgfs_bf_mask param, int value)
255 {
256 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
257 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
258
259 dbgfs_bf->mask |= param;
260
261 switch (param) {
262 case MVM_DEBUGFS_BF_ENERGY_DELTA:
263 dbgfs_bf->bf_energy_delta = value;
264 break;
265 case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
266 dbgfs_bf->bf_roaming_energy_delta = value;
267 break;
268 case MVM_DEBUGFS_BF_ROAMING_STATE:
269 dbgfs_bf->bf_roaming_state = value;
270 break;
271 case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
272 dbgfs_bf->bf_temp_threshold = value;
273 break;
274 case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
275 dbgfs_bf->bf_temp_fast_filter = value;
276 break;
277 case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
278 dbgfs_bf->bf_temp_slow_filter = value;
279 break;
280 case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
281 dbgfs_bf->bf_enable_beacon_filter = value;
282 break;
283 case MVM_DEBUGFS_BF_DEBUG_FLAG:
284 dbgfs_bf->bf_debug_flag = value;
285 break;
286 case MVM_DEBUGFS_BF_ESCAPE_TIMER:
287 dbgfs_bf->bf_escape_timer = value;
288 break;
289 case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
290 dbgfs_bf->ba_enable_beacon_abort = value;
291 break;
292 case MVM_DEBUGFS_BA_ESCAPE_TIMER:
293 dbgfs_bf->ba_escape_timer = value;
294 break;
295 }
296 }
297
iwl_dbgfs_bf_params_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)298 static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf,
299 size_t count, loff_t *ppos)
300 {
301 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
302 struct iwl_mvm *mvm = mvmvif->mvm;
303 enum iwl_dbgfs_bf_mask param;
304 int value, ret = 0;
305
306 if (!strncmp("bf_energy_delta=", buf, 16)) {
307 if (sscanf(buf+16, "%d", &value) != 1)
308 return -EINVAL;
309 if (value < IWL_BF_ENERGY_DELTA_MIN ||
310 value > IWL_BF_ENERGY_DELTA_MAX)
311 return -EINVAL;
312 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
313 } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
314 if (sscanf(buf+24, "%d", &value) != 1)
315 return -EINVAL;
316 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
317 value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
318 return -EINVAL;
319 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
320 } else if (!strncmp("bf_roaming_state=", buf, 17)) {
321 if (sscanf(buf+17, "%d", &value) != 1)
322 return -EINVAL;
323 if (value < IWL_BF_ROAMING_STATE_MIN ||
324 value > IWL_BF_ROAMING_STATE_MAX)
325 return -EINVAL;
326 param = MVM_DEBUGFS_BF_ROAMING_STATE;
327 } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
328 if (sscanf(buf+18, "%d", &value) != 1)
329 return -EINVAL;
330 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
331 value > IWL_BF_TEMP_THRESHOLD_MAX)
332 return -EINVAL;
333 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
334 } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
335 if (sscanf(buf+20, "%d", &value) != 1)
336 return -EINVAL;
337 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
338 value > IWL_BF_TEMP_FAST_FILTER_MAX)
339 return -EINVAL;
340 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
341 } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
342 if (sscanf(buf+20, "%d", &value) != 1)
343 return -EINVAL;
344 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
345 value > IWL_BF_TEMP_SLOW_FILTER_MAX)
346 return -EINVAL;
347 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
348 } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
349 if (sscanf(buf+24, "%d", &value) != 1)
350 return -EINVAL;
351 if (value < 0 || value > 1)
352 return -EINVAL;
353 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
354 } else if (!strncmp("bf_debug_flag=", buf, 14)) {
355 if (sscanf(buf+14, "%d", &value) != 1)
356 return -EINVAL;
357 if (value < 0 || value > 1)
358 return -EINVAL;
359 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
360 } else if (!strncmp("bf_escape_timer=", buf, 16)) {
361 if (sscanf(buf+16, "%d", &value) != 1)
362 return -EINVAL;
363 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
364 value > IWL_BF_ESCAPE_TIMER_MAX)
365 return -EINVAL;
366 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
367 } else if (!strncmp("ba_escape_timer=", buf, 16)) {
368 if (sscanf(buf+16, "%d", &value) != 1)
369 return -EINVAL;
370 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
371 value > IWL_BA_ESCAPE_TIMER_MAX)
372 return -EINVAL;
373 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
374 } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
375 if (sscanf(buf+23, "%d", &value) != 1)
376 return -EINVAL;
377 if (value < 0 || value > 1)
378 return -EINVAL;
379 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
380 } else {
381 return -EINVAL;
382 }
383
384 mutex_lock(&mvm->mutex);
385 iwl_dbgfs_update_bf(vif, param, value);
386 if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value)
387 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
388 else
389 ret = iwl_mvm_enable_beacon_filter(mvm, vif);
390 mutex_unlock(&mvm->mutex);
391
392 return ret ?: count;
393 }
394
iwl_dbgfs_bf_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)395 static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
396 char __user *user_buf,
397 size_t count, loff_t *ppos)
398 {
399 struct ieee80211_vif *vif = file->private_data;
400 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
401 char buf[256];
402 int pos = 0;
403 const size_t bufsz = sizeof(buf);
404 struct iwl_beacon_filter_cmd cmd = {
405 IWL_BF_CMD_CONFIG_DEFAULTS,
406 .bf_enable_beacon_filter =
407 cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
408 .ba_enable_beacon_abort =
409 cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
410 };
411
412 iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
413 if (mvmvif->bf_enabled)
414 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
415 else
416 cmd.bf_enable_beacon_filter = 0;
417
418 pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
419 le32_to_cpu(cmd.bf_energy_delta));
420 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
421 le32_to_cpu(cmd.bf_roaming_energy_delta));
422 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
423 le32_to_cpu(cmd.bf_roaming_state));
424 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
425 le32_to_cpu(cmd.bf_temp_threshold));
426 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
427 le32_to_cpu(cmd.bf_temp_fast_filter));
428 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
429 le32_to_cpu(cmd.bf_temp_slow_filter));
430 pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
431 le32_to_cpu(cmd.bf_enable_beacon_filter));
432 pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
433 le32_to_cpu(cmd.bf_debug_flag));
434 pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
435 le32_to_cpu(cmd.bf_escape_timer));
436 pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
437 le32_to_cpu(cmd.ba_escape_timer));
438 pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
439 le32_to_cpu(cmd.ba_enable_beacon_abort));
440
441 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
442 }
443
iwl_dbgfs_os_device_timediff_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)444 static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file,
445 char __user *user_buf,
446 size_t count, loff_t *ppos)
447 {
448 struct ieee80211_vif *vif = file->private_data;
449 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
450 struct iwl_mvm *mvm = mvmvif->mvm;
451 u32 curr_gp2;
452 u64 curr_os;
453 s64 diff;
454 char buf[64];
455 const size_t bufsz = sizeof(buf);
456 int pos = 0;
457
458 mutex_lock(&mvm->mutex);
459 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, &curr_os, NULL);
460 mutex_unlock(&mvm->mutex);
461
462 do_div(curr_os, NSEC_PER_USEC);
463 diff = curr_os - curr_gp2;
464 pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff);
465
466 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
467 }
468
iwl_dbgfs_low_latency_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)469 static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
470 size_t count, loff_t *ppos)
471 {
472 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
473 struct iwl_mvm *mvm = mvmvif->mvm;
474 u8 value;
475 int ret;
476
477 ret = kstrtou8(buf, 0, &value);
478 if (ret)
479 return ret;
480 if (value > 1)
481 return -EINVAL;
482
483 mutex_lock(&mvm->mutex);
484 iwl_mvm_update_low_latency(mvm, vif, value, LOW_LATENCY_DEBUGFS);
485 mutex_unlock(&mvm->mutex);
486
487 return count;
488 }
489
490 static ssize_t
iwl_dbgfs_low_latency_force_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)491 iwl_dbgfs_low_latency_force_write(struct ieee80211_vif *vif, char *buf,
492 size_t count, loff_t *ppos)
493 {
494 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
495 struct iwl_mvm *mvm = mvmvif->mvm;
496 u8 value;
497 int ret;
498
499 ret = kstrtou8(buf, 0, &value);
500 if (ret)
501 return ret;
502
503 if (value > NUM_LOW_LATENCY_FORCE)
504 return -EINVAL;
505
506 mutex_lock(&mvm->mutex);
507 if (value == LOW_LATENCY_FORCE_UNSET) {
508 iwl_mvm_update_low_latency(mvm, vif, false,
509 LOW_LATENCY_DEBUGFS_FORCE);
510 iwl_mvm_update_low_latency(mvm, vif, false,
511 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
512 } else {
513 iwl_mvm_update_low_latency(mvm, vif,
514 value == LOW_LATENCY_FORCE_ON,
515 LOW_LATENCY_DEBUGFS_FORCE);
516 iwl_mvm_update_low_latency(mvm, vif, true,
517 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
518 }
519 mutex_unlock(&mvm->mutex);
520 return count;
521 }
522
iwl_dbgfs_low_latency_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)523 static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
524 char __user *user_buf,
525 size_t count, loff_t *ppos)
526 {
527 struct ieee80211_vif *vif = file->private_data;
528 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
529 char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n"
530 "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n";
531
532 /*
533 * all values in format are boolean so the size of format is enough
534 * for holding the result string
535 */
536 char buf[sizeof(format) + 1] = {};
537 int len;
538
539 len = scnprintf(buf, sizeof(buf) - 1, format,
540 !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC),
541 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS),
542 !!(mvmvif->low_latency & LOW_LATENCY_VCMD),
543 !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE),
544 !!(mvmvif->low_latency &
545 LOW_LATENCY_DEBUGFS_FORCE_ENABLE),
546 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE),
547 !!(mvmvif->low_latency_actual));
548 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
549 }
550
iwl_dbgfs_uapsd_misbehaving_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)551 static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file,
552 char __user *user_buf,
553 size_t count, loff_t *ppos)
554 {
555 struct ieee80211_vif *vif = file->private_data;
556 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
557 char buf[20];
558 int len;
559
560 #if defined(__linux__)
561 len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_ap_addr);
562 #elif defined(__FreeBSD__)
563 len = sprintf(buf, "%6D\n", mvmvif->uapsd_misbehaving_ap_addr, ":");
564 #endif
565 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
566 }
567
iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)568 static 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_ap_addr);
578 mutex_unlock(&mvm->mutex);
579
580 return ret ? count : -EINVAL;
581 }
582
iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)583 static 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_bss_conf *link_conf;
589 u16 value;
590 int link_id, ret = -EINVAL;
591
592 ret = kstrtou16(buf, 0, &value);
593 if (ret)
594 return ret;
595
596 mutex_lock(&mvm->mutex);
597
598 mvm->dbgfs_rx_phyinfo = value;
599
600 for_each_vif_active_link(vif, link_conf, link_id) {
601 struct ieee80211_chanctx_conf *chanctx_conf;
602 struct cfg80211_chan_def min_def, ap_def;
603 struct iwl_mvm_phy_ctxt *phy_ctxt;
604 u8 chains_static, chains_dynamic;
605
606 rcu_read_lock();
607 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
608 if (!chanctx_conf) {
609 rcu_read_unlock();
610 continue;
611 }
612 /* A command can't be sent with RCU lock held, so copy
613 * everything here and use it after unlocking
614 */
615 min_def = chanctx_conf->min_def;
616 ap_def = chanctx_conf->ap;
617 chains_static = chanctx_conf->rx_chains_static;
618 chains_dynamic = chanctx_conf->rx_chains_dynamic;
619 rcu_read_unlock();
620
621 phy_ctxt = mvmvif->link[link_id]->phy_ctxt;
622 if (!phy_ctxt)
623 continue;
624
625 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &min_def, &ap_def,
626 chains_static, chains_dynamic);
627 }
628
629 mutex_unlock(&mvm->mutex);
630
631 return ret ?: count;
632 }
633
iwl_dbgfs_rx_phyinfo_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)634 static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
635 char __user *user_buf,
636 size_t count, loff_t *ppos)
637 {
638 struct ieee80211_vif *vif = file->private_data;
639 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
640 char buf[8];
641 int len;
642
643 len = scnprintf(buf, sizeof(buf), "0x%04x\n",
644 mvmvif->mvm->dbgfs_rx_phyinfo);
645
646 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
647 }
648
iwl_dbgfs_quota_check(void * data,u8 * mac,struct ieee80211_vif * vif)649 static void iwl_dbgfs_quota_check(void *data, u8 *mac,
650 struct ieee80211_vif *vif)
651 {
652 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
653 int *ret = data;
654
655 if (mvmvif->dbgfs_quota_min)
656 *ret = -EINVAL;
657 }
658
iwl_dbgfs_quota_min_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)659 static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf,
660 size_t count, loff_t *ppos)
661 {
662 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
663 struct iwl_mvm *mvm = mvmvif->mvm;
664 u16 value;
665 int ret;
666
667 ret = kstrtou16(buf, 0, &value);
668 if (ret)
669 return ret;
670
671 if (value > 95)
672 return -EINVAL;
673
674 mutex_lock(&mvm->mutex);
675
676 mvmvif->dbgfs_quota_min = 0;
677 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
678 iwl_dbgfs_quota_check, &ret);
679 if (ret == 0) {
680 mvmvif->dbgfs_quota_min = value;
681 iwl_mvm_update_quotas(mvm, false, NULL);
682 }
683 mutex_unlock(&mvm->mutex);
684
685 return ret ?: count;
686 }
687
iwl_dbgfs_quota_min_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)688 static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
689 char __user *user_buf,
690 size_t count, loff_t *ppos)
691 {
692 struct ieee80211_vif *vif = file->private_data;
693 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
694 char buf[10];
695 int len;
696
697 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min);
698
699 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
700 }
701
iwl_dbgfs_max_tx_op_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)702 static ssize_t iwl_dbgfs_max_tx_op_write(struct ieee80211_vif *vif, char *buf,
703 size_t count, loff_t *ppos)
704 {
705 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
706 struct iwl_mvm *mvm = mvmvif->mvm;
707 u16 value;
708 int ret;
709
710 ret = kstrtou16(buf, 0, &value);
711 if (ret)
712 return ret;
713
714 mutex_lock(&mvm->mutex);
715 mvmvif->max_tx_op = value;
716 mutex_unlock(&mvm->mutex);
717
718 return count;
719 }
720
iwl_dbgfs_max_tx_op_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)721 static ssize_t iwl_dbgfs_max_tx_op_read(struct file *file,
722 char __user *user_buf,
723 size_t count, loff_t *ppos)
724 {
725 struct ieee80211_vif *vif = file->private_data;
726 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
727 struct iwl_mvm *mvm = mvmvif->mvm;
728 char buf[10];
729 int len;
730
731 mutex_lock(&mvm->mutex);
732 len = scnprintf(buf, sizeof(buf), "%hu\n", mvmvif->max_tx_op);
733 mutex_unlock(&mvm->mutex);
734
735 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
736 }
737
iwl_dbgfs_int_mlo_scan_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)738 static ssize_t iwl_dbgfs_int_mlo_scan_write(struct ieee80211_vif *vif,
739 char *buf, size_t count,
740 loff_t *ppos)
741 {
742 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
743 struct iwl_mvm *mvm = mvmvif->mvm;
744 u32 action;
745 int ret;
746
747 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif))
748 return -EINVAL;
749
750 if (kstrtou32(buf, 0, &action))
751 return -EINVAL;
752
753 mutex_lock(&mvm->mutex);
754
755 if (!action) {
756 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_INT_MLO, false);
757 } else if (action == 1) {
758 ret = iwl_mvm_int_mlo_scan(mvm, vif);
759 } else {
760 ret = -EINVAL;
761 }
762
763 mutex_unlock(&mvm->mutex);
764
765 return ret ?: count;
766 }
767
iwl_dbgfs_esr_disable_reason_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)768 static ssize_t iwl_dbgfs_esr_disable_reason_read(struct file *file,
769 char __user *user_buf,
770 size_t count, loff_t *ppos)
771 {
772 struct ieee80211_vif *vif = file->private_data;
773 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
774 struct iwl_mvm *mvm = mvmvif->mvm;
775 unsigned long esr_mask;
776 char *buf;
777 int bufsz, pos, i;
778 ssize_t rv;
779
780 mutex_lock(&mvm->mutex);
781 esr_mask = mvmvif->esr_disable_reason;
782 mutex_unlock(&mvm->mutex);
783
784 bufsz = hweight32(esr_mask) * 32 + 40;
785 buf = kmalloc(bufsz, GFP_KERNEL);
786 if (!buf)
787 return -ENOMEM;
788
789 pos = scnprintf(buf, bufsz, "EMLSR state: '0x%lx'\nreasons:\n",
790 esr_mask);
791 for_each_set_bit(i, &esr_mask, BITS_PER_LONG)
792 pos += scnprintf(buf + pos, bufsz - pos, " - %s\n",
793 iwl_get_esr_state_string(BIT(i)));
794
795 rv = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
796 kfree(buf);
797 return rv;
798 }
799
iwl_dbgfs_esr_disable_reason_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)800 static ssize_t iwl_dbgfs_esr_disable_reason_write(struct ieee80211_vif *vif,
801 char *buf, size_t count,
802 loff_t *ppos)
803 {
804 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
805 struct iwl_mvm *mvm = mvmvif->mvm;
806 u32 reason;
807 u8 block;
808 int ret;
809
810 ret = sscanf(buf, "%u %hhu", &reason, &block);
811 if (ret < 0)
812 return ret;
813
814 if (hweight16(reason) != 1 || !(reason & IWL_MVM_BLOCK_ESR_REASONS))
815 return -EINVAL;
816
817 mutex_lock(&mvm->mutex);
818 if (block)
819 iwl_mvm_block_esr(mvm, vif, reason,
820 iwl_mvm_get_primary_link(vif));
821 else
822 iwl_mvm_unblock_esr(mvm, vif, reason);
823 mutex_unlock(&mvm->mutex);
824
825 return count;
826 }
827
828 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
829 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
830 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
831 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
832 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
833 debugfs_create_file(#name, mode, parent, vif, \
834 &iwl_dbgfs_##name##_ops); \
835 } while (0)
836
837 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
838 MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
839 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
840 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
841 MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
842 MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10);
843 MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
844 MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);
845 MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
846 MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff);
847 MVM_DEBUGFS_READ_WRITE_FILE_OPS(max_tx_op, 10);
848 MVM_DEBUGFS_WRITE_FILE_OPS(int_mlo_scan, 32);
849 MVM_DEBUGFS_READ_WRITE_FILE_OPS(esr_disable_reason, 32);
850
iwl_mvm_vif_add_debugfs(struct ieee80211_hw * hw,struct ieee80211_vif * vif)851 void iwl_mvm_vif_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
852 {
853 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
854 struct dentry *dbgfs_dir = vif->debugfs_dir;
855 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
856
857 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
858 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) {
859 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
860 dbgfs_dir);
861 return;
862 }
863
864 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
865 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
866 (vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
867 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600);
868
869 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400);
870 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400);
871 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600);
872 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600);
873 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600);
874 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
875 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
876 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
877 MVM_DEBUGFS_ADD_FILE_VIF(max_tx_op, mvmvif->dbgfs_dir, 0600);
878 debugfs_create_bool("ftm_unprotected", 0200, mvmvif->dbgfs_dir,
879 &mvmvif->ftm_unprotected);
880 MVM_DEBUGFS_ADD_FILE_VIF(int_mlo_scan, mvmvif->dbgfs_dir, 0200);
881 MVM_DEBUGFS_ADD_FILE_VIF(esr_disable_reason, mvmvif->dbgfs_dir, 0600);
882
883 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
884 mvmvif == mvm->bf_allowed_vif)
885 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600);
886 }
887
iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm * mvm,struct ieee80211_vif * vif)888 void iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
889 {
890 struct dentry *dbgfs_dir = vif->debugfs_dir;
891 #if defined(__linux__)
892 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
893 char buf[3 * 3 + 11 + (NL80211_WIPHY_NAME_MAXLEN + 1) +
894 (7 + IFNAMSIZ + 1) + 6 + 1];
895 char name[7 + IFNAMSIZ + 1];
896 #endif
897
898 /* this will happen in monitor mode */
899 if (!dbgfs_dir)
900 return;
901
902 #if defined(__linux__)
903 /*
904 * Create symlink for convenience pointing to interface specific
905 * debugfs entries for the driver. For example, under
906 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
907 * find
908 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
909 */
910 snprintf(name, sizeof(name), "%pd", dbgfs_dir);
911 snprintf(buf, sizeof(buf), "../../../%pd3/iwlmvm", dbgfs_dir);
912
913 mvmvif->dbgfs_slink =
914 debugfs_create_symlink(name, mvm->debugfs_dir, buf);
915 #endif
916 }
917
iwl_mvm_vif_dbgfs_rm_link(struct iwl_mvm * mvm,struct ieee80211_vif * vif)918 void iwl_mvm_vif_dbgfs_rm_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
919 {
920 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
921
922 debugfs_remove(mvmvif->dbgfs_slink);
923 mvmvif->dbgfs_slink = NULL;
924 }
925
926 #define MVM_DEBUGFS_WRITE_LINK_FILE_OPS(name, bufsz) \
927 _MVM_DEBUGFS_WRITE_FILE_OPS(link_##name, bufsz, \
928 struct ieee80211_bss_conf)
929 #define MVM_DEBUGFS_READ_WRITE_LINK_FILE_OPS(name, bufsz) \
930 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(link_##name, bufsz, \
931 struct ieee80211_bss_conf)
932 #define MVM_DEBUGFS_ADD_LINK_FILE(name, parent, mode) \
933 debugfs_create_file(#name, mode, parent, link_conf, \
934 &iwl_dbgfs_link_##name##_ops)
935
iwl_mvm_debugfs_add_link_files(struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct dentry * mvm_dir)936 static void iwl_mvm_debugfs_add_link_files(struct ieee80211_vif *vif,
937 struct ieee80211_bss_conf *link_conf,
938 struct dentry *mvm_dir)
939 {
940 /* Add per-link files here*/
941 }
942
iwl_mvm_link_add_debugfs(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct dentry * dir)943 void iwl_mvm_link_add_debugfs(struct ieee80211_hw *hw,
944 struct ieee80211_vif *vif,
945 struct ieee80211_bss_conf *link_conf,
946 struct dentry *dir)
947 {
948 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
949 struct iwl_mvm *mvm = mvmvif->mvm;
950 unsigned int link_id = link_conf->link_id;
951 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
952 struct dentry *mvm_dir;
953
954 if (WARN_ON(!link_info) || !dir)
955 return;
956
957 if (dir == vif->debugfs_dir) {
958 WARN_ON(!mvmvif->dbgfs_dir);
959 mvm_dir = mvmvif->dbgfs_dir;
960 } else {
961 mvm_dir = debugfs_create_dir("iwlmvm", dir);
962 if (IS_ERR_OR_NULL(mvm_dir)) {
963 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
964 dir);
965 return;
966 }
967 }
968
969 iwl_mvm_debugfs_add_link_files(vif, link_conf, mvm_dir);
970 }
971