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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> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/debugfs.h> | |
12 | #include <linux/ieee80211.h> | |
13 | #include "ieee80211_i.h" | |
14 | #include "debugfs.h" | |
15 | #include "debugfs_sta.h" | |
16 | #include "sta_info.h" | |
17 | ||
18 | /* sta attributtes */ | |
19 | ||
07caf9d6 | 20 | #define STA_READ(name, field, format_string) \ |
e9f207f0 JB |
21 | static ssize_t sta_ ##name## _read(struct file *file, \ |
22 | char __user *userbuf, \ | |
23 | size_t count, loff_t *ppos) \ | |
24 | { \ | |
e9f207f0 | 25 | struct sta_info *sta = file->private_data; \ |
07caf9d6 EP |
26 | return mac80211_format_buffer(userbuf, count, ppos, \ |
27 | format_string, sta->field); \ | |
e9f207f0 | 28 | } |
07caf9d6 EP |
29 | #define STA_READ_D(name, field) STA_READ(name, field, "%d\n") |
30 | #define STA_READ_U(name, field) STA_READ(name, field, "%u\n") | |
31 | #define STA_READ_S(name, field) STA_READ(name, field, "%s\n") | |
e9f207f0 | 32 | |
e9f207f0 JB |
33 | #define STA_OPS(name) \ |
34 | static const struct file_operations sta_ ##name## _ops = { \ | |
35 | .read = sta_##name##_read, \ | |
36 | .open = mac80211_open_file_generic, \ | |
2b18ab36 | 37 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
38 | } |
39 | ||
a75b4363 JB |
40 | #define STA_OPS_RW(name) \ |
41 | static const struct file_operations sta_ ##name## _ops = { \ | |
42 | .read = sta_##name##_read, \ | |
43 | .write = sta_##name##_write, \ | |
44 | .open = mac80211_open_file_generic, \ | |
2b18ab36 | 45 | .llseek = generic_file_llseek, \ |
a75b4363 JB |
46 | } |
47 | ||
e9f207f0 JB |
48 | #define STA_FILE(name, field, format) \ |
49 | STA_READ_##format(name, field) \ | |
50 | STA_OPS(name) | |
51 | ||
17741cdc | 52 | STA_FILE(aid, sta.aid, D); |
47846c9b | 53 | STA_FILE(dev, sdata->name, S); |
e9f207f0 | 54 | STA_FILE(last_signal, last_signal, D); |
e9f207f0 JB |
55 | |
56 | static ssize_t sta_flags_read(struct file *file, char __user *userbuf, | |
57 | size_t count, loff_t *ppos) | |
58 | { | |
59 | char buf[100]; | |
60 | struct sta_info *sta = file->private_data; | |
07346f81 | 61 | u32 staflags = get_sta_flags(sta); |
af818581 | 62 | int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", |
07346f81 JB |
63 | staflags & WLAN_STA_AUTH ? "AUTH\n" : "", |
64 | staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "", | |
af818581 JB |
65 | staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "", |
66 | staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "", | |
07346f81 JB |
67 | staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "", |
68 | staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "", | |
69 | staflags & WLAN_STA_WME ? "WME\n" : "", | |
5394af4d JM |
70 | staflags & WLAN_STA_WDS ? "WDS\n" : "", |
71 | staflags & WLAN_STA_MFP ? "MFP\n" : ""); | |
e9f207f0 JB |
72 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
73 | } | |
74 | STA_OPS(flags); | |
75 | ||
76 | static ssize_t sta_num_ps_buf_frames_read(struct file *file, | |
77 | char __user *userbuf, | |
78 | size_t count, loff_t *ppos) | |
79 | { | |
e9f207f0 | 80 | struct sta_info *sta = file->private_data; |
948d887d JB |
81 | char buf[17*IEEE80211_NUM_ACS], *p = buf; |
82 | int ac; | |
83 | ||
84 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
85 | p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac, | |
86 | skb_queue_len(&sta->ps_tx_buf[ac]) + | |
87 | skb_queue_len(&sta->tx_filtered[ac])); | |
88 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
e9f207f0 JB |
89 | } |
90 | STA_OPS(num_ps_buf_frames); | |
91 | ||
e9f207f0 JB |
92 | static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, |
93 | size_t count, loff_t *ppos) | |
94 | { | |
e9f207f0 | 95 | struct sta_info *sta = file->private_data; |
07caf9d6 EP |
96 | return mac80211_format_buffer(userbuf, count, ppos, "%d\n", |
97 | jiffies_to_msecs(jiffies - sta->last_rx)); | |
e9f207f0 JB |
98 | } |
99 | STA_OPS(inactive_ms); | |
100 | ||
ebe27c91 MSS |
101 | |
102 | static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf, | |
103 | size_t count, loff_t *ppos) | |
104 | { | |
105 | struct sta_info *sta = file->private_data; | |
106 | struct timespec uptime; | |
107 | struct tm result; | |
108 | long connected_time_secs; | |
109 | char buf[100]; | |
110 | int res; | |
111 | do_posix_clock_monotonic_gettime(&uptime); | |
112 | connected_time_secs = uptime.tv_sec - sta->last_connected; | |
113 | time_to_tm(connected_time_secs, 0, &result); | |
114 | result.tm_year -= 70; | |
115 | result.tm_mday -= 1; | |
116 | res = scnprintf(buf, sizeof(buf), | |
7762bb02 | 117 | "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n", |
ebe27c91 MSS |
118 | result.tm_year, result.tm_mon, result.tm_mday, |
119 | result.tm_hour, result.tm_min, result.tm_sec); | |
120 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
121 | } | |
122 | STA_OPS(connected_time); | |
123 | ||
124 | ||
125 | ||
e9f207f0 JB |
126 | static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, |
127 | size_t count, loff_t *ppos) | |
128 | { | |
129 | char buf[15*NUM_RX_DATA_QUEUES], *p = buf; | |
130 | int i; | |
131 | struct sta_info *sta = file->private_data; | |
132 | for (i = 0; i < NUM_RX_DATA_QUEUES; i++) | |
133 | p += scnprintf(p, sizeof(buf)+buf-p, "%x ", | |
ba9b07d0 | 134 | le16_to_cpu(sta->last_seq_ctrl[i])); |
e9f207f0 JB |
135 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
136 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
137 | } | |
138 | STA_OPS(last_seq_ctrl); | |
139 | ||
eb2ba62e RR |
140 | static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, |
141 | size_t count, loff_t *ppos) | |
142 | { | |
098a6070 | 143 | char buf[71 + STA_TID_NUM * 40], *p = buf; |
eb2ba62e RR |
144 | int i; |
145 | struct sta_info *sta = file->private_data; | |
dd318575 JB |
146 | struct tid_ampdu_rx *tid_rx; |
147 | struct tid_ampdu_tx *tid_tx; | |
148 | ||
149 | rcu_read_lock(); | |
eb2ba62e | 150 | |
e0b20f1c | 151 | p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n", |
386aa23d | 152 | sta->ampdu_mlme.dialog_token_allocator + 1); |
e0b20f1c | 153 | p += scnprintf(p, sizeof(buf) + buf - p, |
0ab33703 | 154 | "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n"); |
dd318575 | 155 | |
386aa23d | 156 | for (i = 0; i < STA_TID_NUM; i++) { |
dd318575 JB |
157 | tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]); |
158 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]); | |
159 | ||
e0b20f1c | 160 | p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i); |
dd318575 | 161 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx); |
e0b20f1c | 162 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
dd318575 | 163 | tid_rx ? tid_rx->dialog_token : 0); |
e0b20f1c | 164 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", |
dd318575 | 165 | tid_rx ? tid_rx->ssn : 0); |
386aa23d | 166 | |
dd318575 | 167 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx); |
e0b20f1c | 168 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
dd318575 | 169 | tid_tx ? tid_tx->dialog_token : 0); |
e0b20f1c | 170 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d", |
dd318575 | 171 | tid_tx ? skb_queue_len(&tid_tx->pending) : 0); |
e0b20f1c | 172 | p += scnprintf(p, sizeof(buf) + buf - p, "\n"); |
386aa23d | 173 | } |
dd318575 | 174 | rcu_read_unlock(); |
eb2ba62e RR |
175 | |
176 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
177 | } | |
a75b4363 JB |
178 | |
179 | static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf, | |
180 | size_t count, loff_t *ppos) | |
181 | { | |
182 | char _buf[12], *buf = _buf; | |
183 | struct sta_info *sta = file->private_data; | |
184 | bool start, tx; | |
185 | unsigned long tid; | |
186 | int ret; | |
187 | ||
188 | if (count > sizeof(_buf)) | |
189 | return -EINVAL; | |
190 | ||
191 | if (copy_from_user(buf, userbuf, count)) | |
192 | return -EFAULT; | |
193 | ||
194 | buf[sizeof(_buf) - 1] = '\0'; | |
195 | ||
196 | if (strncmp(buf, "tx ", 3) == 0) { | |
197 | buf += 3; | |
198 | tx = true; | |
199 | } else if (strncmp(buf, "rx ", 3) == 0) { | |
200 | buf += 3; | |
201 | tx = false; | |
202 | } else | |
203 | return -EINVAL; | |
204 | ||
205 | if (strncmp(buf, "start ", 6) == 0) { | |
206 | buf += 6; | |
207 | start = true; | |
208 | if (!tx) | |
209 | return -EINVAL; | |
210 | } else if (strncmp(buf, "stop ", 5) == 0) { | |
211 | buf += 5; | |
212 | start = false; | |
213 | } else | |
214 | return -EINVAL; | |
215 | ||
216 | tid = simple_strtoul(buf, NULL, 0); | |
217 | ||
218 | if (tid >= STA_TID_NUM) | |
219 | return -EINVAL; | |
220 | ||
221 | if (tx) { | |
222 | if (start) | |
bd2ce6e4 | 223 | ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000); |
a75b4363 | 224 | else |
6a8579d0 | 225 | ret = ieee80211_stop_tx_ba_session(&sta->sta, tid); |
a75b4363 | 226 | } else { |
53f73c09 JB |
227 | __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, |
228 | 3, true); | |
a75b4363 JB |
229 | ret = 0; |
230 | } | |
231 | ||
232 | return ret ?: count; | |
233 | } | |
234 | STA_OPS_RW(agg_status); | |
eb2ba62e | 235 | |
64491f0e JB |
236 | static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf, |
237 | size_t count, loff_t *ppos) | |
238 | { | |
7db94e21 LR |
239 | #define PRINT_HT_CAP(_cond, _str) \ |
240 | do { \ | |
241 | if (_cond) \ | |
242 | p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \ | |
243 | } while (0) | |
4c82bf8e | 244 | char buf[512], *p = buf; |
64491f0e JB |
245 | int i; |
246 | struct sta_info *sta = file->private_data; | |
247 | struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap; | |
248 | ||
249 | p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n", | |
250 | htc->ht_supported ? "" : "not "); | |
251 | if (htc->ht_supported) { | |
cb136f54 | 252 | p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap); |
7db94e21 | 253 | |
c15cf5fc | 254 | PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC"); |
7db94e21 LR |
255 | PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40"); |
256 | PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); | |
257 | ||
258 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save"); | |
259 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save"); | |
260 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); | |
261 | ||
262 | PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield"); | |
263 | PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI"); | |
264 | PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI"); | |
265 | PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); | |
266 | ||
267 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC"); | |
268 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream"); | |
269 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams"); | |
270 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); | |
271 | ||
272 | PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); | |
273 | ||
274 | PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " | |
275 | "3839 bytes"); | |
276 | PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " | |
277 | "7935 bytes"); | |
278 | ||
279 | /* | |
280 | * For beacons and probe response this would mean the BSS | |
281 | * does or does not allow the usage of DSSS/CCK HT40. | |
282 | * Otherwise it means the STA does or does not use | |
283 | * DSSS/CCK HT40. | |
284 | */ | |
285 | PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40"); | |
286 | PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); | |
287 | ||
288 | /* BIT(13) is reserved */ | |
289 | ||
290 | PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); | |
291 | ||
292 | PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); | |
293 | ||
64491f0e JB |
294 | p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n", |
295 | htc->ampdu_factor, htc->ampdu_density); | |
296 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:"); | |
9da3e068 | 297 | |
64491f0e JB |
298 | for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) |
299 | p += scnprintf(p, sizeof(buf)+buf-p, " %.2x", | |
300 | htc->mcs.rx_mask[i]); | |
9da3e068 LR |
301 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
302 | ||
303 | /* If not set this is meaningless */ | |
304 | if (le16_to_cpu(htc->mcs.rx_highest)) { | |
305 | p += scnprintf(p, sizeof(buf)+buf-p, | |
306 | "MCS rx highest: %d Mbps\n", | |
307 | le16_to_cpu(htc->mcs.rx_highest)); | |
308 | } | |
309 | ||
64491f0e JB |
310 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n", |
311 | htc->mcs.tx_params); | |
312 | } | |
313 | ||
314 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
315 | } | |
316 | STA_OPS(ht_capa); | |
317 | ||
e9f207f0 | 318 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 319 | debugfs_create_file(#name, 0400, \ |
e9f207f0 JB |
320 | sta->debugfs.dir, sta, &sta_ ##name## _ops); |
321 | ||
2826bcd8 FF |
322 | #define DEBUGFS_ADD_COUNTER(name, field) \ |
323 | if (sizeof(sta->field) == sizeof(u32)) \ | |
324 | debugfs_create_u32(#name, 0400, sta->debugfs.dir, \ | |
325 | (u32 *) &sta->field); \ | |
326 | else \ | |
327 | debugfs_create_u64(#name, 0400, sta->debugfs.dir, \ | |
328 | (u64 *) &sta->field); | |
e9f207f0 JB |
329 | |
330 | void ieee80211_sta_debugfs_add(struct sta_info *sta) | |
331 | { | |
295bafb4 | 332 | struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations; |
0c68ae26 | 333 | u8 mac[3*ETH_ALEN]; |
e9f207f0 | 334 | |
63044e9f JB |
335 | sta->debugfs.add_has_run = true; |
336 | ||
e9f207f0 JB |
337 | if (!stations_dir) |
338 | return; | |
339 | ||
0c68ae26 | 340 | snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); |
e9f207f0 | 341 | |
63044e9f JB |
342 | /* |
343 | * This might fail due to a race condition: | |
344 | * When mac80211 unlinks a station, the debugfs entries | |
345 | * remain, but it is already possible to link a new | |
346 | * station with the same address which triggers adding | |
347 | * it to debugfs; therefore, if the old station isn't | |
348 | * destroyed quickly enough the old station's debugfs | |
349 | * dir might still be around. | |
350 | */ | |
0795af57 | 351 | sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); |
e9f207f0 JB |
352 | if (!sta->debugfs.dir) |
353 | return; | |
354 | ||
355 | DEBUGFS_ADD(flags); | |
356 | DEBUGFS_ADD(num_ps_buf_frames); | |
e9f207f0 | 357 | DEBUGFS_ADD(inactive_ms); |
ebe27c91 | 358 | DEBUGFS_ADD(connected_time); |
e9f207f0 | 359 | DEBUGFS_ADD(last_seq_ctrl); |
eb2ba62e | 360 | DEBUGFS_ADD(agg_status); |
386aa23d | 361 | DEBUGFS_ADD(dev); |
386aa23d | 362 | DEBUGFS_ADD(last_signal); |
64491f0e | 363 | DEBUGFS_ADD(ht_capa); |
2826bcd8 FF |
364 | |
365 | DEBUGFS_ADD_COUNTER(rx_packets, rx_packets); | |
366 | DEBUGFS_ADD_COUNTER(tx_packets, tx_packets); | |
367 | DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes); | |
368 | DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes); | |
369 | DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates); | |
370 | DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments); | |
371 | DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped); | |
372 | DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments); | |
373 | DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count); | |
374 | DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed); | |
375 | DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count); | |
376 | DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count); | |
e9f207f0 JB |
377 | } |
378 | ||
379 | void ieee80211_sta_debugfs_remove(struct sta_info *sta) | |
380 | { | |
7bcfaf2f | 381 | debugfs_remove_recursive(sta->debugfs.dir); |
e9f207f0 JB |
382 | sta->debugfs.dir = NULL; |
383 | } |