Commit | Line | Data |
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e9f207f0 JB |
1 | /* |
2 | * Copyright 2003-2005 Devicescape Software, Inc. | |
3 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
4 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
d98ad83e | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
e9f207f0 JB |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/debugfs.h> | |
13 | #include <linux/ieee80211.h> | |
14 | #include "ieee80211_i.h" | |
15 | #include "debugfs.h" | |
16 | #include "debugfs_sta.h" | |
17 | #include "sta_info.h" | |
77d2ece6 | 18 | #include "driver-ops.h" |
e9f207f0 JB |
19 | |
20 | /* sta attributtes */ | |
21 | ||
07caf9d6 | 22 | #define STA_READ(name, field, format_string) \ |
e9f207f0 JB |
23 | static ssize_t sta_ ##name## _read(struct file *file, \ |
24 | char __user *userbuf, \ | |
25 | size_t count, loff_t *ppos) \ | |
26 | { \ | |
e9f207f0 | 27 | struct sta_info *sta = file->private_data; \ |
07caf9d6 EP |
28 | return mac80211_format_buffer(userbuf, count, ppos, \ |
29 | format_string, sta->field); \ | |
e9f207f0 | 30 | } |
07caf9d6 EP |
31 | #define STA_READ_D(name, field) STA_READ(name, field, "%d\n") |
32 | #define STA_READ_U(name, field) STA_READ(name, field, "%u\n") | |
33 | #define STA_READ_S(name, field) STA_READ(name, field, "%s\n") | |
e9f207f0 | 34 | |
e9f207f0 JB |
35 | #define STA_OPS(name) \ |
36 | static const struct file_operations sta_ ##name## _ops = { \ | |
37 | .read = sta_##name##_read, \ | |
234e3405 | 38 | .open = simple_open, \ |
2b18ab36 | 39 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
40 | } |
41 | ||
ad38bfc9 MG |
42 | #define STA_OPS_W(name) \ |
43 | static const struct file_operations sta_ ##name## _ops = { \ | |
44 | .write = sta_##name##_write, \ | |
45 | .open = simple_open, \ | |
46 | .llseek = generic_file_llseek, \ | |
47 | } | |
48 | ||
a75b4363 JB |
49 | #define STA_OPS_RW(name) \ |
50 | static const struct file_operations sta_ ##name## _ops = { \ | |
51 | .read = sta_##name##_read, \ | |
52 | .write = sta_##name##_write, \ | |
234e3405 | 53 | .open = simple_open, \ |
2b18ab36 | 54 | .llseek = generic_file_llseek, \ |
a75b4363 JB |
55 | } |
56 | ||
e9f207f0 JB |
57 | #define STA_FILE(name, field, format) \ |
58 | STA_READ_##format(name, field) \ | |
59 | STA_OPS(name) | |
60 | ||
17741cdc | 61 | STA_FILE(aid, sta.aid, D); |
47846c9b | 62 | STA_FILE(dev, sdata->name, S); |
e9f207f0 | 63 | STA_FILE(last_signal, last_signal, D); |
db94357d | 64 | STA_FILE(last_ack_signal, last_ack_signal, D); |
78e443e4 | 65 | STA_FILE(beacon_loss_count, beacon_loss_count, D); |
e9f207f0 JB |
66 | |
67 | static ssize_t sta_flags_read(struct file *file, char __user *userbuf, | |
68 | size_t count, loff_t *ppos) | |
69 | { | |
5bade101 | 70 | char buf[121]; |
e9f207f0 | 71 | struct sta_info *sta = file->private_data; |
c2c98fde | 72 | |
5bade101 JB |
73 | #define TEST(flg) \ |
74 | test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : "" | |
75 | ||
76 | int res = scnprintf(buf, sizeof(buf), | |
a7a6bdd0 | 77 | "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", |
5bade101 JB |
78 | TEST(AUTH), TEST(ASSOC), TEST(PS_STA), |
79 | TEST(PS_DRIVER), TEST(AUTHORIZED), | |
fb4431bf | 80 | TEST(SHORT_PREAMBLE), |
a74a8c84 JB |
81 | sta->sta.wme ? "WME\n" : "", |
82 | TEST(WDS), TEST(CLEAR_PS_FILT), | |
5bade101 JB |
83 | TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL), |
84 | TEST(UAPSD), TEST(SP), TEST(TDLS_PEER), | |
9041c1fa | 85 | TEST(TDLS_PEER_AUTH), TEST(TDLS_INITIATOR), |
a7a6bdd0 AN |
86 | TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL), |
87 | TEST(4ADDR_EVENT), TEST(INSERTED), | |
88 | TEST(RATE_CONTROL), TEST(TOFFSET_KNOWN), | |
89 | TEST(MPSP_OWNER), TEST(MPSP_RECIPIENT)); | |
5bade101 | 90 | #undef TEST |
e9f207f0 JB |
91 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
92 | } | |
93 | STA_OPS(flags); | |
94 | ||
95 | static ssize_t sta_num_ps_buf_frames_read(struct file *file, | |
96 | char __user *userbuf, | |
97 | size_t count, loff_t *ppos) | |
98 | { | |
e9f207f0 | 99 | struct sta_info *sta = file->private_data; |
948d887d JB |
100 | char buf[17*IEEE80211_NUM_ACS], *p = buf; |
101 | int ac; | |
102 | ||
103 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
104 | p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac, | |
105 | skb_queue_len(&sta->ps_tx_buf[ac]) + | |
106 | skb_queue_len(&sta->tx_filtered[ac])); | |
107 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
e9f207f0 JB |
108 | } |
109 | STA_OPS(num_ps_buf_frames); | |
110 | ||
e9f207f0 JB |
111 | static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, |
112 | size_t count, loff_t *ppos) | |
113 | { | |
e9f207f0 | 114 | struct sta_info *sta = file->private_data; |
07caf9d6 EP |
115 | return mac80211_format_buffer(userbuf, count, ppos, "%d\n", |
116 | jiffies_to_msecs(jiffies - sta->last_rx)); | |
e9f207f0 JB |
117 | } |
118 | STA_OPS(inactive_ms); | |
119 | ||
ebe27c91 MSS |
120 | |
121 | static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf, | |
122 | size_t count, loff_t *ppos) | |
123 | { | |
124 | struct sta_info *sta = file->private_data; | |
125 | struct timespec uptime; | |
126 | struct tm result; | |
127 | long connected_time_secs; | |
128 | char buf[100]; | |
129 | int res; | |
18171520 | 130 | ktime_get_ts(&uptime); |
ebe27c91 MSS |
131 | connected_time_secs = uptime.tv_sec - sta->last_connected; |
132 | time_to_tm(connected_time_secs, 0, &result); | |
133 | result.tm_year -= 70; | |
134 | result.tm_mday -= 1; | |
135 | res = scnprintf(buf, sizeof(buf), | |
7762bb02 | 136 | "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n", |
ebe27c91 MSS |
137 | result.tm_year, result.tm_mon, result.tm_mday, |
138 | result.tm_hour, result.tm_min, result.tm_sec); | |
139 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
140 | } | |
141 | STA_OPS(connected_time); | |
142 | ||
143 | ||
144 | ||
e9f207f0 JB |
145 | static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, |
146 | size_t count, loff_t *ppos) | |
147 | { | |
5a306f58 | 148 | char buf[15*IEEE80211_NUM_TIDS], *p = buf; |
e9f207f0 JB |
149 | int i; |
150 | struct sta_info *sta = file->private_data; | |
5a306f58 | 151 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
e9f207f0 | 152 | p += scnprintf(p, sizeof(buf)+buf-p, "%x ", |
ba9b07d0 | 153 | le16_to_cpu(sta->last_seq_ctrl[i])); |
e9f207f0 JB |
154 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
155 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
156 | } | |
157 | STA_OPS(last_seq_ctrl); | |
158 | ||
eb2ba62e RR |
159 | static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, |
160 | size_t count, loff_t *ppos) | |
161 | { | |
5a306f58 | 162 | char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf; |
eb2ba62e RR |
163 | int i; |
164 | struct sta_info *sta = file->private_data; | |
dd318575 JB |
165 | struct tid_ampdu_rx *tid_rx; |
166 | struct tid_ampdu_tx *tid_tx; | |
167 | ||
168 | rcu_read_lock(); | |
eb2ba62e | 169 | |
e0b20f1c | 170 | p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n", |
386aa23d | 171 | sta->ampdu_mlme.dialog_token_allocator + 1); |
e0b20f1c | 172 | p += scnprintf(p, sizeof(buf) + buf - p, |
14b058bb | 173 | "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n"); |
dd318575 | 174 | |
5a306f58 | 175 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
dd318575 JB |
176 | tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]); |
177 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]); | |
178 | ||
e0b20f1c | 179 | p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i); |
dd318575 | 180 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx); |
e0b20f1c | 181 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
dd318575 | 182 | tid_rx ? tid_rx->dialog_token : 0); |
e0b20f1c | 183 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", |
dd318575 | 184 | tid_rx ? tid_rx->ssn : 0); |
386aa23d | 185 | |
dd318575 | 186 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx); |
e0b20f1c | 187 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
dd318575 | 188 | tid_tx ? tid_tx->dialog_token : 0); |
e0b20f1c | 189 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d", |
dd318575 | 190 | tid_tx ? skb_queue_len(&tid_tx->pending) : 0); |
e0b20f1c | 191 | p += scnprintf(p, sizeof(buf) + buf - p, "\n"); |
386aa23d | 192 | } |
dd318575 | 193 | rcu_read_unlock(); |
eb2ba62e RR |
194 | |
195 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
196 | } | |
a75b4363 JB |
197 | |
198 | static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf, | |
199 | size_t count, loff_t *ppos) | |
200 | { | |
c4d2ffac | 201 | char _buf[12] = {}, *buf = _buf; |
a75b4363 JB |
202 | struct sta_info *sta = file->private_data; |
203 | bool start, tx; | |
204 | unsigned long tid; | |
205 | int ret; | |
206 | ||
207 | if (count > sizeof(_buf)) | |
208 | return -EINVAL; | |
209 | ||
210 | if (copy_from_user(buf, userbuf, count)) | |
211 | return -EFAULT; | |
212 | ||
213 | buf[sizeof(_buf) - 1] = '\0'; | |
214 | ||
215 | if (strncmp(buf, "tx ", 3) == 0) { | |
216 | buf += 3; | |
217 | tx = true; | |
218 | } else if (strncmp(buf, "rx ", 3) == 0) { | |
219 | buf += 3; | |
220 | tx = false; | |
221 | } else | |
222 | return -EINVAL; | |
223 | ||
224 | if (strncmp(buf, "start ", 6) == 0) { | |
225 | buf += 6; | |
226 | start = true; | |
227 | if (!tx) | |
228 | return -EINVAL; | |
229 | } else if (strncmp(buf, "stop ", 5) == 0) { | |
230 | buf += 5; | |
231 | start = false; | |
232 | } else | |
233 | return -EINVAL; | |
234 | ||
4b5511eb AP |
235 | ret = kstrtoul(buf, 0, &tid); |
236 | if (ret) | |
237 | return ret; | |
a75b4363 | 238 | |
5a306f58 | 239 | if (tid >= IEEE80211_NUM_TIDS) |
a75b4363 JB |
240 | return -EINVAL; |
241 | ||
242 | if (tx) { | |
243 | if (start) | |
bd2ce6e4 | 244 | ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000); |
a75b4363 | 245 | else |
6a8579d0 | 246 | ret = ieee80211_stop_tx_ba_session(&sta->sta, tid); |
a75b4363 | 247 | } else { |
53f73c09 JB |
248 | __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, |
249 | 3, true); | |
a75b4363 JB |
250 | ret = 0; |
251 | } | |
252 | ||
253 | return ret ?: count; | |
254 | } | |
255 | STA_OPS_RW(agg_status); | |
eb2ba62e | 256 | |
64491f0e JB |
257 | static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf, |
258 | size_t count, loff_t *ppos) | |
259 | { | |
7db94e21 LR |
260 | #define PRINT_HT_CAP(_cond, _str) \ |
261 | do { \ | |
262 | if (_cond) \ | |
263 | p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \ | |
264 | } while (0) | |
4c82bf8e | 265 | char buf[512], *p = buf; |
64491f0e JB |
266 | int i; |
267 | struct sta_info *sta = file->private_data; | |
268 | struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap; | |
269 | ||
270 | p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n", | |
271 | htc->ht_supported ? "" : "not "); | |
272 | if (htc->ht_supported) { | |
cb136f54 | 273 | p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap); |
7db94e21 | 274 | |
c15cf5fc | 275 | PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC"); |
7db94e21 LR |
276 | PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40"); |
277 | PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); | |
278 | ||
279 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save"); | |
280 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save"); | |
281 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); | |
282 | ||
283 | PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield"); | |
284 | PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI"); | |
285 | PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI"); | |
286 | PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); | |
287 | ||
288 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC"); | |
289 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream"); | |
290 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams"); | |
291 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); | |
292 | ||
293 | PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); | |
294 | ||
7db94e21 | 295 | PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " |
904603f9 BG |
296 | "3839 bytes"); |
297 | PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " | |
7db94e21 LR |
298 | "7935 bytes"); |
299 | ||
300 | /* | |
301 | * For beacons and probe response this would mean the BSS | |
302 | * does or does not allow the usage of DSSS/CCK HT40. | |
303 | * Otherwise it means the STA does or does not use | |
304 | * DSSS/CCK HT40. | |
305 | */ | |
306 | PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40"); | |
307 | PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); | |
308 | ||
309 | /* BIT(13) is reserved */ | |
310 | ||
311 | PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); | |
312 | ||
313 | PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); | |
314 | ||
64491f0e JB |
315 | p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n", |
316 | htc->ampdu_factor, htc->ampdu_density); | |
317 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:"); | |
9da3e068 | 318 | |
64491f0e JB |
319 | for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) |
320 | p += scnprintf(p, sizeof(buf)+buf-p, " %.2x", | |
321 | htc->mcs.rx_mask[i]); | |
9da3e068 LR |
322 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
323 | ||
324 | /* If not set this is meaningless */ | |
325 | if (le16_to_cpu(htc->mcs.rx_highest)) { | |
326 | p += scnprintf(p, sizeof(buf)+buf-p, | |
327 | "MCS rx highest: %d Mbps\n", | |
328 | le16_to_cpu(htc->mcs.rx_highest)); | |
329 | } | |
330 | ||
64491f0e JB |
331 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n", |
332 | htc->mcs.tx_params); | |
333 | } | |
334 | ||
335 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
336 | } | |
337 | STA_OPS(ht_capa); | |
338 | ||
90fcba65 JB |
339 | static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf, |
340 | size_t count, loff_t *ppos) | |
341 | { | |
342 | char buf[128], *p = buf; | |
343 | struct sta_info *sta = file->private_data; | |
344 | struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap; | |
345 | ||
346 | p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n", | |
347 | vhtc->vht_supported ? "" : "not "); | |
348 | if (vhtc->vht_supported) { | |
349 | p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap); | |
350 | ||
351 | p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n", | |
352 | le16_to_cpu(vhtc->vht_mcs.rx_mcs_map)); | |
353 | if (vhtc->vht_mcs.rx_highest) | |
354 | p += scnprintf(p, sizeof(buf)+buf-p, | |
355 | "MCS RX highest: %d Mbps\n", | |
356 | le16_to_cpu(vhtc->vht_mcs.rx_highest)); | |
357 | p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n", | |
358 | le16_to_cpu(vhtc->vht_mcs.tx_mcs_map)); | |
359 | if (vhtc->vht_mcs.tx_highest) | |
360 | p += scnprintf(p, sizeof(buf)+buf-p, | |
361 | "MCS TX highest: %d Mbps\n", | |
362 | le16_to_cpu(vhtc->vht_mcs.tx_highest)); | |
363 | } | |
364 | ||
365 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
366 | } | |
367 | STA_OPS(vht_capa); | |
368 | ||
91b8c050 S |
369 | static ssize_t sta_current_tx_rate_read(struct file *file, char __user *userbuf, |
370 | size_t count, loff_t *ppos) | |
371 | { | |
372 | struct sta_info *sta = file->private_data; | |
373 | struct rate_info rinfo; | |
374 | u16 rate; | |
375 | sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo); | |
376 | rate = cfg80211_calculate_bitrate(&rinfo); | |
377 | ||
378 | return mac80211_format_buffer(userbuf, count, ppos, | |
379 | "%d.%d MBit/s\n", | |
380 | rate/10, rate%10); | |
381 | } | |
382 | STA_OPS(current_tx_rate); | |
383 | ||
1f2e651c S |
384 | static ssize_t sta_last_rx_rate_read(struct file *file, char __user *userbuf, |
385 | size_t count, loff_t *ppos) | |
386 | { | |
387 | struct sta_info *sta = file->private_data; | |
388 | struct rate_info rinfo; | |
389 | u16 rate; | |
390 | ||
391 | sta_set_rate_info_rx(sta, &rinfo); | |
392 | ||
393 | rate = cfg80211_calculate_bitrate(&rinfo); | |
394 | ||
395 | return mac80211_format_buffer(userbuf, count, ppos, | |
396 | "%d.%d MBit/s\n", | |
397 | rate/10, rate%10); | |
398 | } | |
399 | STA_OPS(last_rx_rate); | |
400 | ||
ad38bfc9 MG |
401 | static int |
402 | sta_tx_latency_stat_header(struct ieee80211_tx_latency_bin_ranges *tx_latency, | |
403 | char *buf, int pos, int bufsz) | |
404 | { | |
405 | int i; | |
406 | int range_count = tx_latency->n_ranges; | |
407 | u32 *bin_ranges = tx_latency->ranges; | |
408 | ||
409 | pos += scnprintf(buf + pos, bufsz - pos, | |
410 | "Station\t\t\tTID\tMax\tAvg"); | |
411 | if (range_count) { | |
412 | pos += scnprintf(buf + pos, bufsz - pos, | |
413 | "\t<=%d", bin_ranges[0]); | |
414 | for (i = 0; i < range_count - 1; i++) | |
415 | pos += scnprintf(buf + pos, bufsz - pos, "\t%d-%d", | |
416 | bin_ranges[i], bin_ranges[i+1]); | |
417 | pos += scnprintf(buf + pos, bufsz - pos, | |
418 | "\t%d<", bin_ranges[range_count - 1]); | |
419 | } | |
420 | ||
421 | pos += scnprintf(buf + pos, bufsz - pos, "\n"); | |
422 | ||
423 | return pos; | |
424 | } | |
425 | ||
426 | static int | |
427 | sta_tx_latency_stat_table(struct ieee80211_tx_latency_bin_ranges *tx_lat_range, | |
428 | struct ieee80211_tx_latency_stat *tx_lat, | |
429 | char *buf, int pos, int bufsz, int tid) | |
430 | { | |
431 | u32 avg = 0; | |
432 | int j; | |
433 | int bin_count = tx_lat->bin_count; | |
434 | ||
435 | pos += scnprintf(buf + pos, bufsz - pos, "\t\t\t%d", tid); | |
436 | /* make sure you don't divide in 0 */ | |
437 | if (tx_lat->counter) | |
438 | avg = tx_lat->sum / tx_lat->counter; | |
439 | ||
440 | pos += scnprintf(buf + pos, bufsz - pos, "\t%d\t%d", | |
441 | tx_lat->max, avg); | |
442 | ||
443 | if (tx_lat_range->n_ranges && tx_lat->bins) | |
444 | for (j = 0; j < bin_count; j++) | |
445 | pos += scnprintf(buf + pos, bufsz - pos, | |
446 | "\t%d", tx_lat->bins[j]); | |
447 | pos += scnprintf(buf + pos, bufsz - pos, "\n"); | |
448 | ||
449 | return pos; | |
450 | } | |
451 | ||
452 | /* | |
453 | * Output Tx latency statistics station && restart all statistics information | |
454 | */ | |
455 | static ssize_t sta_tx_latency_stat_read(struct file *file, | |
456 | char __user *userbuf, | |
457 | size_t count, loff_t *ppos) | |
458 | { | |
459 | struct sta_info *sta = file->private_data; | |
460 | struct ieee80211_local *local = sta->local; | |
461 | struct ieee80211_tx_latency_bin_ranges *tx_latency; | |
462 | char *buf; | |
463 | int bufsz, ret, i; | |
464 | int pos = 0; | |
465 | ||
466 | bufsz = 20 * IEEE80211_NUM_TIDS * | |
467 | sizeof(struct ieee80211_tx_latency_stat); | |
468 | buf = kzalloc(bufsz, GFP_KERNEL); | |
469 | if (!buf) | |
470 | return -ENOMEM; | |
471 | ||
472 | rcu_read_lock(); | |
473 | ||
474 | tx_latency = rcu_dereference(local->tx_latency); | |
475 | ||
476 | if (!sta->tx_lat) { | |
477 | pos += scnprintf(buf + pos, bufsz - pos, | |
478 | "Tx latency statistics are not enabled\n"); | |
479 | goto unlock; | |
480 | } | |
481 | ||
482 | pos = sta_tx_latency_stat_header(tx_latency, buf, pos, bufsz); | |
483 | ||
484 | pos += scnprintf(buf + pos, bufsz - pos, "%pM\n", sta->sta.addr); | |
485 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) | |
486 | pos = sta_tx_latency_stat_table(tx_latency, &sta->tx_lat[i], | |
487 | buf, pos, bufsz, i); | |
488 | unlock: | |
489 | rcu_read_unlock(); | |
490 | ||
491 | ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); | |
492 | kfree(buf); | |
493 | ||
494 | return ret; | |
495 | } | |
496 | STA_OPS(tx_latency_stat); | |
497 | ||
498 | static ssize_t sta_tx_latency_stat_reset_write(struct file *file, | |
499 | const char __user *userbuf, | |
500 | size_t count, loff_t *ppos) | |
501 | { | |
502 | u32 *bins; | |
503 | int bin_count; | |
504 | struct sta_info *sta = file->private_data; | |
505 | int i; | |
506 | ||
507 | if (!sta->tx_lat) | |
508 | return -EINVAL; | |
509 | ||
510 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { | |
511 | bins = sta->tx_lat[i].bins; | |
512 | bin_count = sta->tx_lat[i].bin_count; | |
513 | ||
514 | sta->tx_lat[i].max = 0; | |
515 | sta->tx_lat[i].sum = 0; | |
516 | sta->tx_lat[i].counter = 0; | |
517 | ||
518 | if (bin_count) | |
519 | memset(bins, 0, bin_count * sizeof(u32)); | |
520 | } | |
521 | ||
522 | return count; | |
523 | } | |
524 | STA_OPS_W(tx_latency_stat_reset); | |
525 | ||
e9f207f0 | 526 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 527 | debugfs_create_file(#name, 0400, \ |
e9f207f0 JB |
528 | sta->debugfs.dir, sta, &sta_ ##name## _ops); |
529 | ||
2826bcd8 FF |
530 | #define DEBUGFS_ADD_COUNTER(name, field) \ |
531 | if (sizeof(sta->field) == sizeof(u32)) \ | |
532 | debugfs_create_u32(#name, 0400, sta->debugfs.dir, \ | |
533 | (u32 *) &sta->field); \ | |
534 | else \ | |
535 | debugfs_create_u64(#name, 0400, sta->debugfs.dir, \ | |
536 | (u64 *) &sta->field); | |
e9f207f0 JB |
537 | |
538 | void ieee80211_sta_debugfs_add(struct sta_info *sta) | |
539 | { | |
77d2ece6 SM |
540 | struct ieee80211_local *local = sta->local; |
541 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
295bafb4 | 542 | struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations; |
0c68ae26 | 543 | u8 mac[3*ETH_ALEN]; |
e9f207f0 | 544 | |
63044e9f JB |
545 | sta->debugfs.add_has_run = true; |
546 | ||
e9f207f0 JB |
547 | if (!stations_dir) |
548 | return; | |
549 | ||
0c68ae26 | 550 | snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); |
e9f207f0 | 551 | |
63044e9f JB |
552 | /* |
553 | * This might fail due to a race condition: | |
554 | * When mac80211 unlinks a station, the debugfs entries | |
555 | * remain, but it is already possible to link a new | |
556 | * station with the same address which triggers adding | |
557 | * it to debugfs; therefore, if the old station isn't | |
558 | * destroyed quickly enough the old station's debugfs | |
559 | * dir might still be around. | |
560 | */ | |
0795af57 | 561 | sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); |
e9f207f0 JB |
562 | if (!sta->debugfs.dir) |
563 | return; | |
564 | ||
565 | DEBUGFS_ADD(flags); | |
566 | DEBUGFS_ADD(num_ps_buf_frames); | |
e9f207f0 | 567 | DEBUGFS_ADD(inactive_ms); |
ebe27c91 | 568 | DEBUGFS_ADD(connected_time); |
e9f207f0 | 569 | DEBUGFS_ADD(last_seq_ctrl); |
eb2ba62e | 570 | DEBUGFS_ADD(agg_status); |
386aa23d | 571 | DEBUGFS_ADD(dev); |
386aa23d | 572 | DEBUGFS_ADD(last_signal); |
78e443e4 | 573 | DEBUGFS_ADD(beacon_loss_count); |
64491f0e | 574 | DEBUGFS_ADD(ht_capa); |
90fcba65 | 575 | DEBUGFS_ADD(vht_capa); |
db94357d | 576 | DEBUGFS_ADD(last_ack_signal); |
91b8c050 | 577 | DEBUGFS_ADD(current_tx_rate); |
1f2e651c | 578 | DEBUGFS_ADD(last_rx_rate); |
ad38bfc9 MG |
579 | DEBUGFS_ADD(tx_latency_stat); |
580 | DEBUGFS_ADD(tx_latency_stat_reset); | |
2826bcd8 FF |
581 | |
582 | DEBUGFS_ADD_COUNTER(rx_packets, rx_packets); | |
583 | DEBUGFS_ADD_COUNTER(tx_packets, tx_packets); | |
584 | DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes); | |
585 | DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes); | |
586 | DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates); | |
587 | DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments); | |
588 | DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped); | |
589 | DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments); | |
590 | DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count); | |
591 | DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed); | |
592 | DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count); | |
77d2ece6 | 593 | |
7cf1f14e JB |
594 | if (sizeof(sta->driver_buffered_tids) == sizeof(u32)) |
595 | debugfs_create_x32("driver_buffered_tids", 0400, | |
596 | sta->debugfs.dir, | |
597 | (u32 *)&sta->driver_buffered_tids); | |
598 | else | |
599 | debugfs_create_x64("driver_buffered_tids", 0400, | |
600 | sta->debugfs.dir, | |
601 | (u64 *)&sta->driver_buffered_tids); | |
602 | ||
77d2ece6 | 603 | drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir); |
e9f207f0 JB |
604 | } |
605 | ||
606 | void ieee80211_sta_debugfs_remove(struct sta_info *sta) | |
607 | { | |
77d2ece6 SM |
608 | struct ieee80211_local *local = sta->local; |
609 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
610 | ||
611 | drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir); | |
7bcfaf2f | 612 | debugfs_remove_recursive(sta->debugfs.dir); |
e9f207f0 JB |
613 | sta->debugfs.dir = NULL; |
614 | } |