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