1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright (C) 2020-2023 Intel Corporation
6 */
7
8 #include <linux/kernel.h>
9 #include <linux/device.h>
10 #include <linux/if.h>
11 #include <linux/if_ether.h>
12 #include <linux/interrupt.h>
13 #include <linux/netdevice.h>
14 #include <linux/rtnetlink.h>
15 #include <linux/slab.h>
16 #include <linux/notifier.h>
17 #include <net/mac80211.h>
18 #include <net/cfg80211.h>
19 #include "ieee80211_i.h"
20 #include "rate.h"
21 #include "debugfs.h"
22 #include "debugfs_netdev.h"
23 #include "driver-ops.h"
24
25 struct ieee80211_if_read_sdata_data {
26 ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int);
27 struct ieee80211_sub_if_data *sdata;
28 };
29
30 static ssize_t ieee80211_if_read_sdata_handler(struct wiphy *wiphy,
31 struct file *file,
32 char *buf,
33 size_t bufsize,
34 void *data)
35 {
36 struct ieee80211_if_read_sdata_data *d = data;
37
38 return d->format(d->sdata, buf, bufsize);
39 }
40
41 static ssize_t ieee80211_if_read_sdata(
42 struct file *file,
43 char __user *userbuf,
44 size_t count, loff_t *ppos,
45 ssize_t (*format)(const struct ieee80211_sub_if_data *sdata, char *, int))
46 {
47 struct ieee80211_sub_if_data *sdata = file->private_data;
48 struct ieee80211_if_read_sdata_data data = {
49 .format = format,
50 .sdata = sdata,
51 };
52 char buf[200];
53
54 return wiphy_locked_debugfs_read(sdata->local->hw.wiphy,
55 file, buf, sizeof(buf),
56 userbuf, count, ppos,
57 ieee80211_if_read_sdata_handler,
58 &data);
59 }
60
61 struct ieee80211_if_write_sdata_data {
62 ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int);
63 struct ieee80211_sub_if_data *sdata;
64 };
65
66 static ssize_t ieee80211_if_write_sdata_handler(struct wiphy *wiphy,
67 struct file *file,
68 char *buf,
69 size_t count,
70 void *data)
71 {
72 struct ieee80211_if_write_sdata_data *d = data;
73
74 return d->write(d->sdata, buf, count);
75 }
76
77 static ssize_t ieee80211_if_write_sdata(
78 struct file *file,
79 const char __user *userbuf,
80 size_t count, loff_t *ppos,
81 ssize_t (*write)(struct ieee80211_sub_if_data *sdata, const char *, int))
82 {
83 struct ieee80211_sub_if_data *sdata = file->private_data;
84 struct ieee80211_if_write_sdata_data data = {
85 .write = write,
86 .sdata = sdata,
87 };
88 char buf[64];
89
90 return wiphy_locked_debugfs_write(sdata->local->hw.wiphy,
91 file, buf, sizeof(buf),
92 userbuf, count,
93 ieee80211_if_write_sdata_handler,
94 &data);
95 }
96
97 struct ieee80211_if_read_link_data {
98 ssize_t (*format)(const struct ieee80211_link_data *, char *, int);
99 struct ieee80211_link_data *link;
100 };
101
102 static ssize_t ieee80211_if_read_link_handler(struct wiphy *wiphy,
103 struct file *file,
104 char *buf,
105 size_t bufsize,
106 void *data)
107 {
108 struct ieee80211_if_read_link_data *d = data;
109
110 return d->format(d->link, buf, bufsize);
111 }
112
113 static ssize_t ieee80211_if_read_link(
114 struct file *file,
115 char __user *userbuf,
116 size_t count, loff_t *ppos,
117 ssize_t (*format)(const struct ieee80211_link_data *link, char *, int))
118 {
119 struct ieee80211_link_data *link = file->private_data;
120 struct ieee80211_if_read_link_data data = {
121 .format = format,
122 .link = link,
123 };
124 char buf[200];
125
126 return wiphy_locked_debugfs_read(link->sdata->local->hw.wiphy,
127 file, buf, sizeof(buf),
128 userbuf, count, ppos,
129 ieee80211_if_read_link_handler,
130 &data);
131 }
132
133 struct ieee80211_if_write_link_data {
134 ssize_t (*write)(struct ieee80211_link_data *, const char *, int);
135 struct ieee80211_link_data *link;
136 };
137
138 static ssize_t ieee80211_if_write_link_handler(struct wiphy *wiphy,
139 struct file *file,
140 char *buf,
141 size_t count,
142 void *data)
143 {
144 struct ieee80211_if_write_sdata_data *d = data;
145
146 return d->write(d->sdata, buf, count);
147 }
148
149 static ssize_t ieee80211_if_write_link(
150 struct file *file,
151 const char __user *userbuf,
152 size_t count, loff_t *ppos,
153 ssize_t (*write)(struct ieee80211_link_data *link, const char *, int))
154 {
155 struct ieee80211_link_data *link = file->private_data;
156 struct ieee80211_if_write_link_data data = {
157 .write = write,
158 .link = link,
159 };
160 char buf[64];
161
162 return wiphy_locked_debugfs_write(link->sdata->local->hw.wiphy,
163 file, buf, sizeof(buf),
164 userbuf, count,
165 ieee80211_if_write_link_handler,
166 &data);
167 }
168
169 #define IEEE80211_IF_FMT(name, type, field, format_string) \
170 static ssize_t ieee80211_if_fmt_##name( \
171 const type *data, char *buf, \
172 int buflen) \
173 { \
174 return scnprintf(buf, buflen, format_string, data->field); \
175 }
176 #define IEEE80211_IF_FMT_DEC(name, type, field) \
177 IEEE80211_IF_FMT(name, type, field, "%d\n")
178 #define IEEE80211_IF_FMT_HEX(name, type, field) \
179 IEEE80211_IF_FMT(name, type, field, "%#x\n")
180 #define IEEE80211_IF_FMT_LHEX(name, type, field) \
181 IEEE80211_IF_FMT(name, type, field, "%#lx\n")
182
183 #define IEEE80211_IF_FMT_HEXARRAY(name, type, field) \
184 static ssize_t ieee80211_if_fmt_##name( \
185 const type *data, \
186 char *buf, int buflen) \
187 { \
188 char *p = buf; \
189 int i; \
190 for (i = 0; i < sizeof(data->field); i++) { \
191 p += scnprintf(p, buflen + buf - p, "%.2x ", \
192 data->field[i]); \
193 } \
194 p += scnprintf(p, buflen + buf - p, "\n"); \
195 return p - buf; \
196 }
197
198 #define IEEE80211_IF_FMT_ATOMIC(name, type, field) \
199 static ssize_t ieee80211_if_fmt_##name( \
200 const type *data, \
201 char *buf, int buflen) \
202 { \
203 return scnprintf(buf, buflen, "%d\n", atomic_read(&data->field));\
204 }
205
206 #define IEEE80211_IF_FMT_MAC(name, type, field) \
207 static ssize_t ieee80211_if_fmt_##name( \
208 const type *data, char *buf, \
209 int buflen) \
210 { \
211 return scnprintf(buf, buflen, "%pM\n", data->field); \
212 }
213
214 #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, type, field) \
215 static ssize_t ieee80211_if_fmt_##name( \
216 const type *data, \
217 char *buf, int buflen) \
218 { \
219 return scnprintf(buf, buflen, "%d\n", \
220 jiffies_to_msecs(data->field)); \
221 }
222
223 #define _IEEE80211_IF_FILE_OPS(name, _read, _write) \
224 static const struct file_operations name##_ops = { \
225 .read = (_read), \
226 .write = (_write), \
227 .open = simple_open, \
228 .llseek = generic_file_llseek, \
229 }
230
231 #define _IEEE80211_IF_FILE_R_FN(name) \
232 static ssize_t ieee80211_if_read_##name(struct file *file, \
233 char __user *userbuf, \
234 size_t count, loff_t *ppos) \
235 { \
236 return ieee80211_if_read_sdata(file, \
237 userbuf, count, ppos, \
238 ieee80211_if_fmt_##name); \
239 }
240
241 #define _IEEE80211_IF_FILE_W_FN(name) \
242 static ssize_t ieee80211_if_write_##name(struct file *file, \
243 const char __user *userbuf, \
244 size_t count, loff_t *ppos) \
245 { \
246 return ieee80211_if_write_sdata(file, userbuf, \
247 count, ppos, \
248 ieee80211_if_parse_##name); \
249 }
250
251 #define IEEE80211_IF_FILE_R(name) \
252 _IEEE80211_IF_FILE_R_FN(name) \
253 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL)
254
255 #define IEEE80211_IF_FILE_W(name) \
256 _IEEE80211_IF_FILE_W_FN(name) \
257 _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name)
258
259 #define IEEE80211_IF_FILE_RW(name) \
260 _IEEE80211_IF_FILE_R_FN(name) \
261 _IEEE80211_IF_FILE_W_FN(name) \
262 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, \
263 ieee80211_if_write_##name)
264
265 #define IEEE80211_IF_FILE(name, field, format) \
266 IEEE80211_IF_FMT_##format(name, struct ieee80211_sub_if_data, field) \
267 IEEE80211_IF_FILE_R(name)
268
269 #define _IEEE80211_IF_LINK_R_FN(name) \
270 static ssize_t ieee80211_if_read_##name(struct file *file, \
271 char __user *userbuf, \
272 size_t count, loff_t *ppos) \
273 { \
274 return ieee80211_if_read_link(file, \
275 userbuf, count, ppos, \
276 ieee80211_if_fmt_##name); \
277 }
278
279 #define _IEEE80211_IF_LINK_W_FN(name) \
280 static ssize_t ieee80211_if_write_##name(struct file *file, \
281 const char __user *userbuf, \
282 size_t count, loff_t *ppos) \
283 { \
284 return ieee80211_if_write_link(file, userbuf, \
285 count, ppos, \
286 ieee80211_if_parse_##name); \
287 }
288
289 #define IEEE80211_IF_LINK_FILE_R(name) \
290 _IEEE80211_IF_LINK_R_FN(name) \
291 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, NULL)
292
293 #define IEEE80211_IF_LINK_FILE_W(name) \
294 _IEEE80211_IF_LINK_W_FN(name) \
295 _IEEE80211_IF_FILE_OPS(link_##name, NULL, ieee80211_if_write_##name)
296
297 #define IEEE80211_IF_LINK_FILE_RW(name) \
298 _IEEE80211_IF_LINK_R_FN(name) \
299 _IEEE80211_IF_LINK_W_FN(name) \
300 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, \
301 ieee80211_if_write_##name)
302
303 #define IEEE80211_IF_LINK_FILE(name, field, format) \
304 IEEE80211_IF_FMT_##format(name, struct ieee80211_link_data, field) \
305 IEEE80211_IF_LINK_FILE_R(name)
306
307 /* common attributes */
308 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[NL80211_BAND_2GHZ],
309 HEX);
310 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[NL80211_BAND_5GHZ],
311 HEX);
312 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz,
313 rc_rateidx_mcs_mask[NL80211_BAND_2GHZ], HEXARRAY);
314 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz,
315 rc_rateidx_mcs_mask[NL80211_BAND_5GHZ], HEXARRAY);
316
317 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz(
318 const struct ieee80211_sub_if_data *sdata,
319 char *buf, int buflen)
320 {
321 int i, len = 0;
322 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_2GHZ];
323
324 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
325 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]);
326 len += scnprintf(buf + len, buflen - len, "\n");
327
328 return len;
329 }
330
331 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz);
332
333 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz(
334 const struct ieee80211_sub_if_data *sdata,
335 char *buf, int buflen)
336 {
337 int i, len = 0;
338 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_5GHZ];
339
340 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
341 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]);
342 len += scnprintf(buf + len, buflen - len, "\n");
343
344 return len;
345 }
346
347 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz);
348
349 IEEE80211_IF_FILE(flags, flags, HEX);
350 IEEE80211_IF_FILE(state, state, LHEX);
351 IEEE80211_IF_LINK_FILE(txpower, conf->txpower, DEC);
352 IEEE80211_IF_LINK_FILE(ap_power_level, ap_power_level, DEC);
353 IEEE80211_IF_LINK_FILE(user_power_level, user_power_level, DEC);
354
355 static ssize_t
356 ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata,
357 char *buf, int buflen)
358 {
359 int len;
360
361 len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d\n",
362 sdata->vif.hw_queue[IEEE80211_AC_VO],
363 sdata->vif.hw_queue[IEEE80211_AC_VI],
364 sdata->vif.hw_queue[IEEE80211_AC_BE],
365 sdata->vif.hw_queue[IEEE80211_AC_BK]);
366
367 if (sdata->vif.type == NL80211_IFTYPE_AP)
368 len += scnprintf(buf + len, buflen - len, "cab queue: %d\n",
369 sdata->vif.cab_queue);
370
371 return len;
372 }
373 IEEE80211_IF_FILE_R(hw_queues);
374
375 /* STA attributes */
376 IEEE80211_IF_FILE(bssid, deflink.u.mgd.bssid, MAC);
377 IEEE80211_IF_FILE(aid, vif.cfg.aid, DEC);
378 IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS);
379
380 static int ieee80211_set_smps(struct ieee80211_link_data *link,
381 enum ieee80211_smps_mode smps_mode)
382 {
383 struct ieee80211_sub_if_data *sdata = link->sdata;
384 struct ieee80211_local *local = sdata->local;
385
386 /* The driver indicated that EML is enabled for the interface, thus do
387 * not allow to override the SMPS state.
388 */
389 if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE)
390 return -EOPNOTSUPP;
391
392 if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) &&
393 smps_mode == IEEE80211_SMPS_STATIC)
394 return -EINVAL;
395
396 /* auto should be dynamic if in PS mode */
397 if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) &&
398 (smps_mode == IEEE80211_SMPS_DYNAMIC ||
399 smps_mode == IEEE80211_SMPS_AUTOMATIC))
400 return -EINVAL;
401
402 if (sdata->vif.type != NL80211_IFTYPE_STATION)
403 return -EOPNOTSUPP;
404
405 return __ieee80211_request_smps_mgd(link->sdata, link, smps_mode);
406 }
407
408 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
409 [IEEE80211_SMPS_AUTOMATIC] = "auto",
410 [IEEE80211_SMPS_OFF] = "off",
411 [IEEE80211_SMPS_STATIC] = "static",
412 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
413 };
414
415 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_link_data *link,
416 char *buf, int buflen)
417 {
418 if (link->sdata->vif.type == NL80211_IFTYPE_STATION)
419 return snprintf(buf, buflen, "request: %s\nused: %s\n",
420 smps_modes[link->u.mgd.req_smps],
421 smps_modes[link->smps_mode]);
422 return -EINVAL;
423 }
424
425 static ssize_t ieee80211_if_parse_smps(struct ieee80211_link_data *link,
426 const char *buf, int buflen)
427 {
428 enum ieee80211_smps_mode mode;
429
430 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
431 if (strncmp(buf, smps_modes[mode], buflen) == 0) {
432 int err = ieee80211_set_smps(link, mode);
433 if (!err)
434 return buflen;
435 return err;
436 }
437 }
438
439 return -EINVAL;
440 }
441 IEEE80211_IF_LINK_FILE_RW(smps);
442
443 static ssize_t ieee80211_if_parse_tkip_mic_test(
444 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
445 {
446 struct ieee80211_local *local = sdata->local;
447 u8 addr[ETH_ALEN];
448 struct sk_buff *skb;
449 struct ieee80211_hdr *hdr;
450 __le16 fc;
451
452 if (!mac_pton(buf, addr))
453 return -EINVAL;
454
455 if (!ieee80211_sdata_running(sdata))
456 return -ENOTCONN;
457
458 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100);
459 if (!skb)
460 return -ENOMEM;
461 skb_reserve(skb, local->hw.extra_tx_headroom);
462
463 hdr = skb_put_zero(skb, 24);
464 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
465
466 switch (sdata->vif.type) {
467 case NL80211_IFTYPE_AP:
468 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
469 /* DA BSSID SA */
470 memcpy(hdr->addr1, addr, ETH_ALEN);
471 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
472 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN);
473 break;
474 case NL80211_IFTYPE_STATION:
475 fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
476 /* BSSID SA DA */
477 if (!sdata->u.mgd.associated) {
478 dev_kfree_skb(skb);
479 return -ENOTCONN;
480 }
481 memcpy(hdr->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN);
482 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
483 memcpy(hdr->addr3, addr, ETH_ALEN);
484 break;
485 default:
486 dev_kfree_skb(skb);
487 return -EOPNOTSUPP;
488 }
489 hdr->frame_control = fc;
490
491 /*
492 * Add some length to the test frame to make it look bit more valid.
493 * The exact contents does not matter since the recipient is required
494 * to drop this because of the Michael MIC failure.
495 */
496 skb_put_zero(skb, 50);
497
498 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE;
499
500 ieee80211_tx_skb(sdata, skb);
501
502 return buflen;
503 }
504 IEEE80211_IF_FILE_W(tkip_mic_test);
505
506 static ssize_t ieee80211_if_parse_beacon_loss(
507 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
508 {
509 if (!ieee80211_sdata_running(sdata) || !sdata->vif.cfg.assoc)
510 return -ENOTCONN;
511
512 ieee80211_beacon_loss(&sdata->vif);
513
514 return buflen;
515 }
516 IEEE80211_IF_FILE_W(beacon_loss);
517
518 static ssize_t ieee80211_if_fmt_uapsd_queues(
519 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
520 {
521 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
522
523 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues);
524 }
525
526 static ssize_t ieee80211_if_parse_uapsd_queues(
527 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
528 {
529 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
530 u8 val;
531 int ret;
532
533 ret = kstrtou8(buf, 0, &val);
534 if (ret)
535 return ret;
536
537 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
538 return -ERANGE;
539
540 ifmgd->uapsd_queues = val;
541
542 return buflen;
543 }
544 IEEE80211_IF_FILE_RW(uapsd_queues);
545
546 static ssize_t ieee80211_if_fmt_uapsd_max_sp_len(
547 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
548 {
549 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
550
551 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len);
552 }
553
554 static ssize_t ieee80211_if_parse_uapsd_max_sp_len(
555 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
556 {
557 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
558 unsigned long val;
559 int ret;
560
561 ret = kstrtoul(buf, 0, &val);
562 if (ret)
563 return -EINVAL;
564
565 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
566 return -ERANGE;
567
568 ifmgd->uapsd_max_sp_len = val;
569
570 return buflen;
571 }
572 IEEE80211_IF_FILE_RW(uapsd_max_sp_len);
573
574 static ssize_t ieee80211_if_fmt_tdls_wider_bw(
575 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
576 {
577 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
578 bool tdls_wider_bw;
579
580 tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) &&
581 !ifmgd->tdls_wider_bw_prohibited;
582
583 return snprintf(buf, buflen, "%d\n", tdls_wider_bw);
584 }
585
586 static ssize_t ieee80211_if_parse_tdls_wider_bw(
587 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
588 {
589 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
590 u8 val;
591 int ret;
592
593 ret = kstrtou8(buf, 0, &val);
594 if (ret)
595 return ret;
596
597 ifmgd->tdls_wider_bw_prohibited = !val;
598 return buflen;
599 }
600 IEEE80211_IF_FILE_RW(tdls_wider_bw);
601
602 /* AP attributes */
603 IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC);
604 IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC);
605 IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC);
606 IEEE80211_IF_FILE(num_mcast_sta_vlan, u.vlan.num_mcast_sta, ATOMIC);
607
608 static ssize_t ieee80211_if_fmt_num_buffered_multicast(
609 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
610 {
611 return scnprintf(buf, buflen, "%u\n",
612 skb_queue_len(&sdata->u.ap.ps.bc_buf));
613 }
614 IEEE80211_IF_FILE_R(num_buffered_multicast);
615
616 static ssize_t ieee80211_if_fmt_aqm(
617 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
618 {
619 struct ieee80211_local *local = sdata->local;
620 struct txq_info *txqi;
621 int len;
622
623 if (!sdata->vif.txq)
624 return 0;
625
626 txqi = to_txq_info(sdata->vif.txq);
627
628 spin_lock_bh(&local->fq.lock);
629 rcu_read_lock();
630
631 len = scnprintf(buf,
632 buflen,
633 "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n"
634 "%u %u %u %u %u %u %u %u %u %u\n",
635 txqi->txq.ac,
636 txqi->tin.backlog_bytes,
637 txqi->tin.backlog_packets,
638 txqi->tin.flows,
639 txqi->cstats.drop_count,
640 txqi->cstats.ecn_mark,
641 txqi->tin.overlimit,
642 txqi->tin.collisions,
643 txqi->tin.tx_bytes,
644 txqi->tin.tx_packets);
645
646 rcu_read_unlock();
647 spin_unlock_bh(&local->fq.lock);
648
649 return len;
650 }
651 IEEE80211_IF_FILE_R(aqm);
652
653 IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX);
654
655 /* IBSS attributes */
656 static ssize_t ieee80211_if_fmt_tsf(
657 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
658 {
659 struct ieee80211_local *local = sdata->local;
660 u64 tsf;
661
662 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata);
663
664 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf);
665 }
666
667 static ssize_t ieee80211_if_parse_tsf(
668 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
669 {
670 struct ieee80211_local *local = sdata->local;
671 unsigned long long tsf;
672 int ret;
673 int tsf_is_delta = 0;
674
675 if (strncmp(buf, "reset", 5) == 0) {
676 if (local->ops->reset_tsf) {
677 drv_reset_tsf(local, sdata);
678 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
679 }
680 } else {
681 if (buflen > 10 && buf[1] == '=') {
682 if (buf[0] == '+')
683 tsf_is_delta = 1;
684 else if (buf[0] == '-')
685 tsf_is_delta = -1;
686 else
687 return -EINVAL;
688 buf += 2;
689 }
690 ret = kstrtoull(buf, 10, &tsf);
691 if (ret < 0)
692 return ret;
693 if (tsf_is_delta && local->ops->offset_tsf) {
694 drv_offset_tsf(local, sdata, tsf_is_delta * tsf);
695 wiphy_info(local->hw.wiphy,
696 "debugfs offset TSF by %018lld\n",
697 tsf_is_delta * tsf);
698 } else if (local->ops->set_tsf) {
699 if (tsf_is_delta)
700 tsf = drv_get_tsf(local, sdata) +
701 tsf_is_delta * tsf;
702 drv_set_tsf(local, sdata, tsf);
703 wiphy_info(local->hw.wiphy,
704 "debugfs set TSF to %#018llx\n", tsf);
705 }
706 }
707
708 ieee80211_recalc_dtim(local, sdata);
709 return buflen;
710 }
711 IEEE80211_IF_FILE_RW(tsf);
712
713 static ssize_t ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data *sdata,
714 char *buf, int buflen)
715 {
716 return snprintf(buf, buflen, "0x%x\n", sdata->vif.valid_links);
717 }
718 IEEE80211_IF_FILE_R(valid_links);
719
720 static ssize_t ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data *sdata,
721 char *buf, int buflen)
722 {
723 return snprintf(buf, buflen, "0x%x\n", sdata->vif.active_links);
724 }
725
726 static ssize_t ieee80211_if_parse_active_links(struct ieee80211_sub_if_data *sdata,
727 const char *buf, int buflen)
728 {
729 u16 active_links;
730
731 if (kstrtou16(buf, 0, &active_links))
732 return -EINVAL;
733
734 return ieee80211_set_active_links(&sdata->vif, active_links) ?: buflen;
735 }
736 IEEE80211_IF_FILE_RW(active_links);
737
738 IEEE80211_IF_LINK_FILE(addr, conf->addr, MAC);
739
740 #ifdef CONFIG_MAC80211_MESH
741 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC);
742
743 /* Mesh stats attributes */
744 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
745 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
746 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
747 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
748 IEEE80211_IF_FILE(dropped_frames_no_route,
749 u.mesh.mshstats.dropped_frames_no_route, DEC);
750
751 /* Mesh parameters */
752 IEEE80211_IF_FILE(dot11MeshMaxRetries,
753 u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
754 IEEE80211_IF_FILE(dot11MeshRetryTimeout,
755 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
756 IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
757 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
758 IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
759 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
760 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
761 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC);
762 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
763 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
764 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
765 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
766 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
767 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
768 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
769 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval,
770 u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC);
771 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
772 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
773 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
774 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
775 IEEE80211_IF_FILE(path_refresh_time,
776 u.mesh.mshcfg.path_refresh_time, DEC);
777 IEEE80211_IF_FILE(min_discovery_timeout,
778 u.mesh.mshcfg.min_discovery_timeout, DEC);
779 IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
780 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
781 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,
782 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC);
783 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
784 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
785 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC);
786 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC);
787 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC);
788 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout,
789 u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC);
790 IEEE80211_IF_FILE(dot11MeshHWMProotInterval,
791 u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC);
792 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval,
793 u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC);
794 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC);
795 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration,
796 u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC);
797 IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate,
798 u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC);
799 IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC);
800 IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer,
801 u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC);
802 #endif
803
804 #define DEBUGFS_ADD_MODE(name, mode) \
805 debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \
806 sdata, &name##_ops)
807
808 #define DEBUGFS_ADD_X(_bits, _name, _mode) \
809 debugfs_create_x##_bits(#_name, _mode, sdata->vif.debugfs_dir, \
810 &sdata->vif._name)
811
812 #define DEBUGFS_ADD_X8(_name, _mode) \
813 DEBUGFS_ADD_X(8, _name, _mode)
814
815 #define DEBUGFS_ADD_X16(_name, _mode) \
816 DEBUGFS_ADD_X(16, _name, _mode)
817
818 #define DEBUGFS_ADD_X32(_name, _mode) \
819 DEBUGFS_ADD_X(32, _name, _mode)
820
821 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400)
822
823 static void add_common_files(struct ieee80211_sub_if_data *sdata)
824 {
825 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
826 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
827 DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
828 DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
829 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz);
830 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz);
831 DEBUGFS_ADD(hw_queues);
832
833 if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
834 sdata->vif.type != NL80211_IFTYPE_NAN)
835 DEBUGFS_ADD(aqm);
836 }
837
838 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
839 {
840 DEBUGFS_ADD(bssid);
841 DEBUGFS_ADD(aid);
842 DEBUGFS_ADD(beacon_timeout);
843 DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
844 DEBUGFS_ADD_MODE(beacon_loss, 0200);
845 DEBUGFS_ADD_MODE(uapsd_queues, 0600);
846 DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600);
847 DEBUGFS_ADD_MODE(tdls_wider_bw, 0600);
848 DEBUGFS_ADD_MODE(valid_links, 0400);
849 DEBUGFS_ADD_MODE(active_links, 0600);
850 DEBUGFS_ADD_X16(dormant_links, 0400);
851 }
852
853 static void add_ap_files(struct ieee80211_sub_if_data *sdata)
854 {
855 DEBUGFS_ADD(num_mcast_sta);
856 DEBUGFS_ADD(num_sta_ps);
857 DEBUGFS_ADD(dtim_count);
858 DEBUGFS_ADD(num_buffered_multicast);
859 DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
860 DEBUGFS_ADD_MODE(multicast_to_unicast, 0600);
861 }
862
863 static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
864 {
865 /* add num_mcast_sta_vlan using name num_mcast_sta */
866 debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir,
867 sdata, &num_mcast_sta_vlan_ops);
868 }
869
870 static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
871 {
872 DEBUGFS_ADD_MODE(tsf, 0600);
873 }
874
875 #ifdef CONFIG_MAC80211_MESH
876
877 static void add_mesh_files(struct ieee80211_sub_if_data *sdata)
878 {
879 DEBUGFS_ADD_MODE(tsf, 0600);
880 DEBUGFS_ADD_MODE(estab_plinks, 0400);
881 }
882
883 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
884 {
885 struct dentry *dir = debugfs_create_dir("mesh_stats",
886 sdata->vif.debugfs_dir);
887 #define MESHSTATS_ADD(name)\
888 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops)
889
890 MESHSTATS_ADD(fwded_mcast);
891 MESHSTATS_ADD(fwded_unicast);
892 MESHSTATS_ADD(fwded_frames);
893 MESHSTATS_ADD(dropped_frames_ttl);
894 MESHSTATS_ADD(dropped_frames_no_route);
895 #undef MESHSTATS_ADD
896 }
897
898 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
899 {
900 struct dentry *dir = debugfs_create_dir("mesh_config",
901 sdata->vif.debugfs_dir);
902
903 #define MESHPARAMS_ADD(name) \
904 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops)
905
906 MESHPARAMS_ADD(dot11MeshMaxRetries);
907 MESHPARAMS_ADD(dot11MeshRetryTimeout);
908 MESHPARAMS_ADD(dot11MeshConfirmTimeout);
909 MESHPARAMS_ADD(dot11MeshHoldingTimeout);
910 MESHPARAMS_ADD(dot11MeshTTL);
911 MESHPARAMS_ADD(element_ttl);
912 MESHPARAMS_ADD(auto_open_plinks);
913 MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
914 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
915 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
916 MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval);
917 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
918 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
919 MESHPARAMS_ADD(path_refresh_time);
920 MESHPARAMS_ADD(min_discovery_timeout);
921 MESHPARAMS_ADD(dot11MeshHWMPRootMode);
922 MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
923 MESHPARAMS_ADD(dot11MeshForwarding);
924 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);
925 MESHPARAMS_ADD(rssi_threshold);
926 MESHPARAMS_ADD(ht_opmode);
927 MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout);
928 MESHPARAMS_ADD(dot11MeshHWMProotInterval);
929 MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval);
930 MESHPARAMS_ADD(power_mode);
931 MESHPARAMS_ADD(dot11MeshAwakeWindowDuration);
932 MESHPARAMS_ADD(dot11MeshConnectedToMeshGate);
933 MESHPARAMS_ADD(dot11MeshNolearn);
934 MESHPARAMS_ADD(dot11MeshConnectedToAuthServer);
935 #undef MESHPARAMS_ADD
936 }
937 #endif
938
939 static void add_files(struct ieee80211_sub_if_data *sdata)
940 {
941 if (!sdata->vif.debugfs_dir)
942 return;
943
944 DEBUGFS_ADD(flags);
945 DEBUGFS_ADD(state);
946
947 if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
948 add_common_files(sdata);
949
950 switch (sdata->vif.type) {
951 case NL80211_IFTYPE_MESH_POINT:
952 #ifdef CONFIG_MAC80211_MESH
953 add_mesh_files(sdata);
954 add_mesh_stats(sdata);
955 add_mesh_config(sdata);
956 #endif
957 break;
958 case NL80211_IFTYPE_STATION:
959 add_sta_files(sdata);
960 break;
961 case NL80211_IFTYPE_ADHOC:
962 add_ibss_files(sdata);
963 break;
964 case NL80211_IFTYPE_AP:
965 add_ap_files(sdata);
966 break;
967 case NL80211_IFTYPE_AP_VLAN:
968 add_vlan_files(sdata);
969 break;
970 default:
971 break;
972 }
973 }
974
975 #undef DEBUGFS_ADD_MODE
976 #undef DEBUGFS_ADD
977
978 #define DEBUGFS_ADD_MODE(dentry, name, mode) \
979 debugfs_create_file(#name, mode, dentry, \
980 link, &link_##name##_ops)
981
982 #define DEBUGFS_ADD(dentry, name) DEBUGFS_ADD_MODE(dentry, name, 0400)
983
984 static void add_link_files(struct ieee80211_link_data *link,
985 struct dentry *dentry)
986 {
987 DEBUGFS_ADD(dentry, txpower);
988 DEBUGFS_ADD(dentry, user_power_level);
989 DEBUGFS_ADD(dentry, ap_power_level);
990
991 switch (link->sdata->vif.type) {
992 case NL80211_IFTYPE_STATION:
993 DEBUGFS_ADD_MODE(dentry, smps, 0600);
994 break;
995 default:
996 break;
997 }
998 }
999
1000 static void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata,
1001 bool mld_vif)
1002 {
1003 char buf[10+IFNAMSIZ];
1004
1005 sprintf(buf, "netdev:%s", sdata->name);
1006 sdata->vif.debugfs_dir = debugfs_create_dir(buf,
1007 sdata->local->hw.wiphy->debugfsdir);
1008 /* deflink also has this */
1009 sdata->deflink.debugfs_dir = sdata->vif.debugfs_dir;
1010 sdata->debugfs.subdir_stations = debugfs_create_dir("stations",
1011 sdata->vif.debugfs_dir);
1012 add_files(sdata);
1013 if (!mld_vif)
1014 add_link_files(&sdata->deflink, sdata->vif.debugfs_dir);
1015 }
1016
1017 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
1018 {
1019 if (!sdata->vif.debugfs_dir)
1020 return;
1021
1022 debugfs_remove_recursive(sdata->vif.debugfs_dir);
1023 sdata->vif.debugfs_dir = NULL;
1024 sdata->debugfs.subdir_stations = NULL;
1025 }
1026
1027 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
1028 {
1029 struct dentry *dir;
1030 char buf[10 + IFNAMSIZ];
1031
1032 dir = sdata->vif.debugfs_dir;
1033
1034 if (IS_ERR_OR_NULL(dir))
1035 return;
1036
1037 sprintf(buf, "netdev:%s", sdata->name);
1038 debugfs_rename(dir->d_parent, dir, dir->d_parent, buf);
1039 }
1040
1041 void ieee80211_debugfs_recreate_netdev(struct ieee80211_sub_if_data *sdata,
1042 bool mld_vif)
1043 {
1044 ieee80211_debugfs_remove_netdev(sdata);
1045 ieee80211_debugfs_add_netdev(sdata, mld_vif);
1046
1047 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) {
1048 drv_vif_add_debugfs(sdata->local, sdata);
1049 if (!mld_vif)
1050 ieee80211_link_debugfs_drv_add(&sdata->deflink);
1051 }
1052 }
1053
1054 void ieee80211_link_debugfs_add(struct ieee80211_link_data *link)
1055 {
1056 char link_dir_name[10];
1057
1058 if (WARN_ON(!link->sdata->vif.debugfs_dir || link->debugfs_dir))
1059 return;
1060
1061 /* For now, this should not be called for non-MLO capable drivers */
1062 if (WARN_ON(!(link->sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)))
1063 return;
1064
1065 snprintf(link_dir_name, sizeof(link_dir_name),
1066 "link-%d", link->link_id);
1067
1068 link->debugfs_dir =
1069 debugfs_create_dir(link_dir_name,
1070 link->sdata->vif.debugfs_dir);
1071
1072 DEBUGFS_ADD(link->debugfs_dir, addr);
1073 add_link_files(link, link->debugfs_dir);
1074 }
1075
1076 void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link)
1077 {
1078 if (!link->sdata->vif.debugfs_dir || !link->debugfs_dir) {
1079 link->debugfs_dir = NULL;
1080 return;
1081 }
1082
1083 if (link->debugfs_dir == link->sdata->vif.debugfs_dir) {
1084 WARN_ON(link != &link->sdata->deflink);
1085 link->debugfs_dir = NULL;
1086 return;
1087 }
1088
1089 debugfs_remove_recursive(link->debugfs_dir);
1090 link->debugfs_dir = NULL;
1091 }
1092
1093 void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link)
1094 {
1095 if (link->sdata->vif.type == NL80211_IFTYPE_MONITOR ||
1096 WARN_ON(!link->debugfs_dir))
1097 return;
1098
1099 drv_link_add_debugfs(link->sdata->local, link->sdata,
1100 link->conf, link->debugfs_dir);
1101 }
1102
1103 void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link)
1104 {
1105 if (!link || !link->debugfs_dir)
1106 return;
1107
1108 if (WARN_ON(link->debugfs_dir == link->sdata->vif.debugfs_dir))
1109 return;
1110
1111 /* Recreate the directory excluding the driver data */
1112 debugfs_remove_recursive(link->debugfs_dir);
1113 link->debugfs_dir = NULL;
1114
1115 ieee80211_link_debugfs_add(link);
1116 }
1117
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