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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 | { | |
5bade101 | 59 | char buf[121]; |
e9f207f0 | 60 | struct sta_info *sta = file->private_data; |
c2c98fde | 61 | |
5bade101 JB |
62 | #define TEST(flg) \ |
63 | test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : "" | |
64 | ||
65 | int res = scnprintf(buf, sizeof(buf), | |
66 | "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", | |
67 | TEST(AUTH), TEST(ASSOC), TEST(PS_STA), | |
68 | TEST(PS_DRIVER), TEST(AUTHORIZED), | |
69 | TEST(SHORT_PREAMBLE), TEST(ASSOC_AP), | |
70 | TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT), | |
71 | TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL), | |
72 | TEST(UAPSD), TEST(SP), TEST(TDLS_PEER), | |
73 | TEST(TDLS_PEER_AUTH)); | |
74 | #undef TEST | |
e9f207f0 JB |
75 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
76 | } | |
77 | STA_OPS(flags); | |
78 | ||
79 | static ssize_t sta_num_ps_buf_frames_read(struct file *file, | |
80 | char __user *userbuf, | |
81 | size_t count, loff_t *ppos) | |
82 | { | |
e9f207f0 | 83 | struct sta_info *sta = file->private_data; |
948d887d JB |
84 | char buf[17*IEEE80211_NUM_ACS], *p = buf; |
85 | int ac; | |
86 | ||
87 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
88 | p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac, | |
89 | skb_queue_len(&sta->ps_tx_buf[ac]) + | |
90 | skb_queue_len(&sta->tx_filtered[ac])); | |
91 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
e9f207f0 JB |
92 | } |
93 | STA_OPS(num_ps_buf_frames); | |
94 | ||
e9f207f0 JB |
95 | static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, |
96 | size_t count, loff_t *ppos) | |
97 | { | |
e9f207f0 | 98 | struct sta_info *sta = file->private_data; |
07caf9d6 EP |
99 | return mac80211_format_buffer(userbuf, count, ppos, "%d\n", |
100 | jiffies_to_msecs(jiffies - sta->last_rx)); | |
e9f207f0 JB |
101 | } |
102 | STA_OPS(inactive_ms); | |
103 | ||
ebe27c91 MSS |
104 | |
105 | static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf, | |
106 | size_t count, loff_t *ppos) | |
107 | { | |
108 | struct sta_info *sta = file->private_data; | |
109 | struct timespec uptime; | |
110 | struct tm result; | |
111 | long connected_time_secs; | |
112 | char buf[100]; | |
113 | int res; | |
114 | do_posix_clock_monotonic_gettime(&uptime); | |
115 | connected_time_secs = uptime.tv_sec - sta->last_connected; | |
116 | time_to_tm(connected_time_secs, 0, &result); | |
117 | result.tm_year -= 70; | |
118 | result.tm_mday -= 1; | |
119 | res = scnprintf(buf, sizeof(buf), | |
7762bb02 | 120 | "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n", |
ebe27c91 MSS |
121 | result.tm_year, result.tm_mon, result.tm_mday, |
122 | result.tm_hour, result.tm_min, result.tm_sec); | |
123 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
124 | } | |
125 | STA_OPS(connected_time); | |
126 | ||
127 | ||
128 | ||
e9f207f0 JB |
129 | static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, |
130 | size_t count, loff_t *ppos) | |
131 | { | |
132 | char buf[15*NUM_RX_DATA_QUEUES], *p = buf; | |
133 | int i; | |
134 | struct sta_info *sta = file->private_data; | |
135 | for (i = 0; i < NUM_RX_DATA_QUEUES; i++) | |
136 | p += scnprintf(p, sizeof(buf)+buf-p, "%x ", | |
ba9b07d0 | 137 | le16_to_cpu(sta->last_seq_ctrl[i])); |
e9f207f0 JB |
138 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
139 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
140 | } | |
141 | STA_OPS(last_seq_ctrl); | |
142 | ||
eb2ba62e RR |
143 | static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, |
144 | size_t count, loff_t *ppos) | |
145 | { | |
098a6070 | 146 | char buf[71 + STA_TID_NUM * 40], *p = buf; |
eb2ba62e RR |
147 | int i; |
148 | struct sta_info *sta = file->private_data; | |
dd318575 JB |
149 | struct tid_ampdu_rx *tid_rx; |
150 | struct tid_ampdu_tx *tid_tx; | |
151 | ||
152 | rcu_read_lock(); | |
eb2ba62e | 153 | |
e0b20f1c | 154 | p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n", |
386aa23d | 155 | sta->ampdu_mlme.dialog_token_allocator + 1); |
e0b20f1c | 156 | p += scnprintf(p, sizeof(buf) + buf - p, |
0ab33703 | 157 | "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n"); |
dd318575 | 158 | |
386aa23d | 159 | for (i = 0; i < STA_TID_NUM; i++) { |
dd318575 JB |
160 | tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]); |
161 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]); | |
162 | ||
e0b20f1c | 163 | p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i); |
dd318575 | 164 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx); |
e0b20f1c | 165 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
dd318575 | 166 | tid_rx ? tid_rx->dialog_token : 0); |
e0b20f1c | 167 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", |
dd318575 | 168 | tid_rx ? tid_rx->ssn : 0); |
386aa23d | 169 | |
dd318575 | 170 | p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx); |
e0b20f1c | 171 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", |
dd318575 | 172 | tid_tx ? tid_tx->dialog_token : 0); |
e0b20f1c | 173 | p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d", |
dd318575 | 174 | tid_tx ? skb_queue_len(&tid_tx->pending) : 0); |
e0b20f1c | 175 | p += scnprintf(p, sizeof(buf) + buf - p, "\n"); |
386aa23d | 176 | } |
dd318575 | 177 | rcu_read_unlock(); |
eb2ba62e RR |
178 | |
179 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
180 | } | |
a75b4363 JB |
181 | |
182 | static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf, | |
183 | size_t count, loff_t *ppos) | |
184 | { | |
185 | char _buf[12], *buf = _buf; | |
186 | struct sta_info *sta = file->private_data; | |
187 | bool start, tx; | |
188 | unsigned long tid; | |
189 | int ret; | |
190 | ||
191 | if (count > sizeof(_buf)) | |
192 | return -EINVAL; | |
193 | ||
194 | if (copy_from_user(buf, userbuf, count)) | |
195 | return -EFAULT; | |
196 | ||
197 | buf[sizeof(_buf) - 1] = '\0'; | |
198 | ||
199 | if (strncmp(buf, "tx ", 3) == 0) { | |
200 | buf += 3; | |
201 | tx = true; | |
202 | } else if (strncmp(buf, "rx ", 3) == 0) { | |
203 | buf += 3; | |
204 | tx = false; | |
205 | } else | |
206 | return -EINVAL; | |
207 | ||
208 | if (strncmp(buf, "start ", 6) == 0) { | |
209 | buf += 6; | |
210 | start = true; | |
211 | if (!tx) | |
212 | return -EINVAL; | |
213 | } else if (strncmp(buf, "stop ", 5) == 0) { | |
214 | buf += 5; | |
215 | start = false; | |
216 | } else | |
217 | return -EINVAL; | |
218 | ||
219 | tid = simple_strtoul(buf, NULL, 0); | |
220 | ||
221 | if (tid >= STA_TID_NUM) | |
222 | return -EINVAL; | |
223 | ||
224 | if (tx) { | |
225 | if (start) | |
bd2ce6e4 | 226 | ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000); |
a75b4363 | 227 | else |
6a8579d0 | 228 | ret = ieee80211_stop_tx_ba_session(&sta->sta, tid); |
a75b4363 | 229 | } else { |
53f73c09 JB |
230 | __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, |
231 | 3, true); | |
a75b4363 JB |
232 | ret = 0; |
233 | } | |
234 | ||
235 | return ret ?: count; | |
236 | } | |
237 | STA_OPS_RW(agg_status); | |
eb2ba62e | 238 | |
64491f0e JB |
239 | static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf, |
240 | size_t count, loff_t *ppos) | |
241 | { | |
7db94e21 LR |
242 | #define PRINT_HT_CAP(_cond, _str) \ |
243 | do { \ | |
244 | if (_cond) \ | |
245 | p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \ | |
246 | } while (0) | |
4c82bf8e | 247 | char buf[512], *p = buf; |
64491f0e JB |
248 | int i; |
249 | struct sta_info *sta = file->private_data; | |
250 | struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap; | |
251 | ||
252 | p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n", | |
253 | htc->ht_supported ? "" : "not "); | |
254 | if (htc->ht_supported) { | |
cb136f54 | 255 | p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap); |
7db94e21 | 256 | |
c15cf5fc | 257 | PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC"); |
7db94e21 LR |
258 | PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40"); |
259 | PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); | |
260 | ||
261 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save"); | |
262 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save"); | |
263 | PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); | |
264 | ||
265 | PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield"); | |
266 | PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI"); | |
267 | PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI"); | |
268 | PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); | |
269 | ||
270 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC"); | |
271 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream"); | |
272 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams"); | |
273 | PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); | |
274 | ||
275 | PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); | |
276 | ||
277 | PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: " | |
278 | "3839 bytes"); | |
279 | PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: " | |
280 | "7935 bytes"); | |
281 | ||
282 | /* | |
283 | * For beacons and probe response this would mean the BSS | |
284 | * does or does not allow the usage of DSSS/CCK HT40. | |
285 | * Otherwise it means the STA does or does not use | |
286 | * DSSS/CCK HT40. | |
287 | */ | |
288 | PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40"); | |
289 | PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); | |
290 | ||
291 | /* BIT(13) is reserved */ | |
292 | ||
293 | PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); | |
294 | ||
295 | PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); | |
296 | ||
64491f0e JB |
297 | p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n", |
298 | htc->ampdu_factor, htc->ampdu_density); | |
299 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:"); | |
9da3e068 | 300 | |
64491f0e JB |
301 | for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) |
302 | p += scnprintf(p, sizeof(buf)+buf-p, " %.2x", | |
303 | htc->mcs.rx_mask[i]); | |
9da3e068 LR |
304 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
305 | ||
306 | /* If not set this is meaningless */ | |
307 | if (le16_to_cpu(htc->mcs.rx_highest)) { | |
308 | p += scnprintf(p, sizeof(buf)+buf-p, | |
309 | "MCS rx highest: %d Mbps\n", | |
310 | le16_to_cpu(htc->mcs.rx_highest)); | |
311 | } | |
312 | ||
64491f0e JB |
313 | p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n", |
314 | htc->mcs.tx_params); | |
315 | } | |
316 | ||
317 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
318 | } | |
319 | STA_OPS(ht_capa); | |
320 | ||
e9f207f0 | 321 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 322 | debugfs_create_file(#name, 0400, \ |
e9f207f0 JB |
323 | sta->debugfs.dir, sta, &sta_ ##name## _ops); |
324 | ||
2826bcd8 FF |
325 | #define DEBUGFS_ADD_COUNTER(name, field) \ |
326 | if (sizeof(sta->field) == sizeof(u32)) \ | |
327 | debugfs_create_u32(#name, 0400, sta->debugfs.dir, \ | |
328 | (u32 *) &sta->field); \ | |
329 | else \ | |
330 | debugfs_create_u64(#name, 0400, sta->debugfs.dir, \ | |
331 | (u64 *) &sta->field); | |
e9f207f0 JB |
332 | |
333 | void ieee80211_sta_debugfs_add(struct sta_info *sta) | |
334 | { | |
295bafb4 | 335 | struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations; |
0c68ae26 | 336 | u8 mac[3*ETH_ALEN]; |
e9f207f0 | 337 | |
63044e9f JB |
338 | sta->debugfs.add_has_run = true; |
339 | ||
e9f207f0 JB |
340 | if (!stations_dir) |
341 | return; | |
342 | ||
0c68ae26 | 343 | snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); |
e9f207f0 | 344 | |
63044e9f JB |
345 | /* |
346 | * This might fail due to a race condition: | |
347 | * When mac80211 unlinks a station, the debugfs entries | |
348 | * remain, but it is already possible to link a new | |
349 | * station with the same address which triggers adding | |
350 | * it to debugfs; therefore, if the old station isn't | |
351 | * destroyed quickly enough the old station's debugfs | |
352 | * dir might still be around. | |
353 | */ | |
0795af57 | 354 | sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); |
e9f207f0 JB |
355 | if (!sta->debugfs.dir) |
356 | return; | |
357 | ||
358 | DEBUGFS_ADD(flags); | |
359 | DEBUGFS_ADD(num_ps_buf_frames); | |
e9f207f0 | 360 | DEBUGFS_ADD(inactive_ms); |
ebe27c91 | 361 | DEBUGFS_ADD(connected_time); |
e9f207f0 | 362 | DEBUGFS_ADD(last_seq_ctrl); |
eb2ba62e | 363 | DEBUGFS_ADD(agg_status); |
386aa23d | 364 | DEBUGFS_ADD(dev); |
386aa23d | 365 | DEBUGFS_ADD(last_signal); |
64491f0e | 366 | DEBUGFS_ADD(ht_capa); |
2826bcd8 FF |
367 | |
368 | DEBUGFS_ADD_COUNTER(rx_packets, rx_packets); | |
369 | DEBUGFS_ADD_COUNTER(tx_packets, tx_packets); | |
370 | DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes); | |
371 | DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes); | |
372 | DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates); | |
373 | DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments); | |
374 | DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped); | |
375 | DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments); | |
376 | DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count); | |
377 | DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed); | |
378 | DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count); | |
379 | DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count); | |
e9f207f0 JB |
380 | } |
381 | ||
382 | void ieee80211_sta_debugfs_remove(struct sta_info *sta) | |
383 | { | |
7bcfaf2f | 384 | debugfs_remove_recursive(sta->debugfs.dir); |
e9f207f0 JB |
385 | sta->debugfs.dir = NULL; |
386 | } |