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