2 * Copyright 2003-2005 Devicescape Software, Inc.
3 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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.
11 #include <linux/debugfs.h>
12 #include <linux/ieee80211.h>
13 #include "ieee80211_i.h"
15 #include "debugfs_sta.h"
17 #include "driver-ops.h"
21 #define STA_READ(name, field, format_string) \
22 static ssize_t sta_ ##name## _read(struct file *file, \
23 char __user *userbuf, \
24 size_t count, loff_t *ppos) \
26 struct sta_info *sta = file->private_data; \
27 return mac80211_format_buffer(userbuf, count, ppos, \
28 format_string, sta->field); \
30 #define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
31 #define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
32 #define STA_READ_S(name, field) STA_READ(name, field, "%s\n")
34 #define STA_OPS(name) \
35 static const struct file_operations sta_ ##name## _ops = { \
36 .read = sta_##name##_read, \
37 .open = simple_open, \
38 .llseek = generic_file_llseek, \
41 #define STA_OPS_RW(name) \
42 static const struct file_operations sta_ ##name## _ops = { \
43 .read = sta_##name##_read, \
44 .write = sta_##name##_write, \
45 .open = simple_open, \
46 .llseek = generic_file_llseek, \
49 #define STA_FILE(name, field, format) \
50 STA_READ_##format(name, field) \
53 STA_FILE(aid
, sta
.aid
, D
);
54 STA_FILE(dev
, sdata
->name
, S
);
55 STA_FILE(last_signal
, last_signal
, D
);
56 STA_FILE(last_ack_signal
, last_ack_signal
, D
);
58 static ssize_t
sta_flags_read(struct file
*file
, char __user
*userbuf
,
59 size_t count
, loff_t
*ppos
)
62 struct sta_info
*sta
= file
->private_data
;
65 test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
67 int res
= scnprintf(buf
, sizeof(buf
),
68 "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
69 TEST(AUTH
), TEST(ASSOC
), TEST(PS_STA
),
70 TEST(PS_DRIVER
), TEST(AUTHORIZED
),
72 TEST(WME
), TEST(WDS
), TEST(CLEAR_PS_FILT
),
73 TEST(MFP
), TEST(BLOCK_BA
), TEST(PSPOLL
),
74 TEST(UAPSD
), TEST(SP
), TEST(TDLS_PEER
),
75 TEST(TDLS_PEER_AUTH
), TEST(4ADDR_EVENT
),
76 TEST(INSERTED
), TEST(RATE_CONTROL
),
79 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, res
);
83 static ssize_t
sta_num_ps_buf_frames_read(struct file
*file
,
85 size_t count
, loff_t
*ppos
)
87 struct sta_info
*sta
= file
->private_data
;
88 char buf
[17*IEEE80211_NUM_ACS
], *p
= buf
;
91 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
92 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "AC%d: %d\n", ac
,
93 skb_queue_len(&sta
->ps_tx_buf
[ac
]) +
94 skb_queue_len(&sta
->tx_filtered
[ac
]));
95 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
- buf
);
97 STA_OPS(num_ps_buf_frames
);
99 static ssize_t
sta_inactive_ms_read(struct file
*file
, char __user
*userbuf
,
100 size_t count
, loff_t
*ppos
)
102 struct sta_info
*sta
= file
->private_data
;
103 return mac80211_format_buffer(userbuf
, count
, ppos
, "%d\n",
104 jiffies_to_msecs(jiffies
- sta
->last_rx
));
106 STA_OPS(inactive_ms
);
109 static ssize_t
sta_connected_time_read(struct file
*file
, char __user
*userbuf
,
110 size_t count
, loff_t
*ppos
)
112 struct sta_info
*sta
= file
->private_data
;
113 struct timespec uptime
;
115 long connected_time_secs
;
118 do_posix_clock_monotonic_gettime(&uptime
);
119 connected_time_secs
= uptime
.tv_sec
- sta
->last_connected
;
120 time_to_tm(connected_time_secs
, 0, &result
);
121 result
.tm_year
-= 70;
123 res
= scnprintf(buf
, sizeof(buf
),
124 "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
125 result
.tm_year
, result
.tm_mon
, result
.tm_mday
,
126 result
.tm_hour
, result
.tm_min
, result
.tm_sec
);
127 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, res
);
129 STA_OPS(connected_time
);
133 static ssize_t
sta_last_seq_ctrl_read(struct file
*file
, char __user
*userbuf
,
134 size_t count
, loff_t
*ppos
)
136 char buf
[15*IEEE80211_NUM_TIDS
], *p
= buf
;
138 struct sta_info
*sta
= file
->private_data
;
139 for (i
= 0; i
< IEEE80211_NUM_TIDS
; i
++)
140 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "%x ",
141 le16_to_cpu(sta
->last_seq_ctrl
[i
]));
142 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "\n");
143 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
- buf
);
145 STA_OPS(last_seq_ctrl
);
147 static ssize_t
sta_agg_status_read(struct file
*file
, char __user
*userbuf
,
148 size_t count
, loff_t
*ppos
)
150 char buf
[71 + IEEE80211_NUM_TIDS
* 40], *p
= buf
;
152 struct sta_info
*sta
= file
->private_data
;
153 struct tid_ampdu_rx
*tid_rx
;
154 struct tid_ampdu_tx
*tid_tx
;
158 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "next dialog_token: %#02x\n",
159 sta
->ampdu_mlme
.dialog_token_allocator
+ 1);
160 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
,
161 "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
163 for (i
= 0; i
< IEEE80211_NUM_TIDS
; i
++) {
164 tid_rx
= rcu_dereference(sta
->ampdu_mlme
.tid_rx
[i
]);
165 tid_tx
= rcu_dereference(sta
->ampdu_mlme
.tid_tx
[i
]);
167 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "%02d", i
);
168 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t\t%x", !!tid_rx
);
169 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t%#.2x",
170 tid_rx
? tid_rx
->dialog_token
: 0);
171 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t%#.3x",
172 tid_rx
? tid_rx
->ssn
: 0);
174 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t\t%x", !!tid_tx
);
175 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t%#.2x",
176 tid_tx
? tid_tx
->dialog_token
: 0);
177 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t%03d",
178 tid_tx
? skb_queue_len(&tid_tx
->pending
) : 0);
179 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\n");
183 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
- buf
);
186 static ssize_t
sta_agg_status_write(struct file
*file
, const char __user
*userbuf
,
187 size_t count
, loff_t
*ppos
)
189 char _buf
[12], *buf
= _buf
;
190 struct sta_info
*sta
= file
->private_data
;
195 if (count
> sizeof(_buf
))
198 if (copy_from_user(buf
, userbuf
, count
))
201 buf
[sizeof(_buf
) - 1] = '\0';
203 if (strncmp(buf
, "tx ", 3) == 0) {
206 } else if (strncmp(buf
, "rx ", 3) == 0) {
212 if (strncmp(buf
, "start ", 6) == 0) {
217 } else if (strncmp(buf
, "stop ", 5) == 0) {
223 ret
= kstrtoul(buf
, 0, &tid
);
227 if (tid
>= IEEE80211_NUM_TIDS
)
232 ret
= ieee80211_start_tx_ba_session(&sta
->sta
, tid
, 5000);
234 ret
= ieee80211_stop_tx_ba_session(&sta
->sta
, tid
);
236 __ieee80211_stop_rx_ba_session(sta
, tid
, WLAN_BACK_RECIPIENT
,
243 STA_OPS_RW(agg_status
);
245 static ssize_t
sta_ht_capa_read(struct file
*file
, char __user
*userbuf
,
246 size_t count
, loff_t
*ppos
)
248 #define PRINT_HT_CAP(_cond, _str) \
251 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
253 char buf
[512], *p
= buf
;
255 struct sta_info
*sta
= file
->private_data
;
256 struct ieee80211_sta_ht_cap
*htc
= &sta
->sta
.ht_cap
;
258 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "ht %ssupported\n",
259 htc
->ht_supported
? "" : "not ");
260 if (htc
->ht_supported
) {
261 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "cap: %#.4x\n", htc
->cap
);
263 PRINT_HT_CAP((htc
->cap
& BIT(0)), "RX LDPC");
264 PRINT_HT_CAP((htc
->cap
& BIT(1)), "HT20/HT40");
265 PRINT_HT_CAP(!(htc
->cap
& BIT(1)), "HT20");
267 PRINT_HT_CAP(((htc
->cap
>> 2) & 0x3) == 0, "Static SM Power Save");
268 PRINT_HT_CAP(((htc
->cap
>> 2) & 0x3) == 1, "Dynamic SM Power Save");
269 PRINT_HT_CAP(((htc
->cap
>> 2) & 0x3) == 3, "SM Power Save disabled");
271 PRINT_HT_CAP((htc
->cap
& BIT(4)), "RX Greenfield");
272 PRINT_HT_CAP((htc
->cap
& BIT(5)), "RX HT20 SGI");
273 PRINT_HT_CAP((htc
->cap
& BIT(6)), "RX HT40 SGI");
274 PRINT_HT_CAP((htc
->cap
& BIT(7)), "TX STBC");
276 PRINT_HT_CAP(((htc
->cap
>> 8) & 0x3) == 0, "No RX STBC");
277 PRINT_HT_CAP(((htc
->cap
>> 8) & 0x3) == 1, "RX STBC 1-stream");
278 PRINT_HT_CAP(((htc
->cap
>> 8) & 0x3) == 2, "RX STBC 2-streams");
279 PRINT_HT_CAP(((htc
->cap
>> 8) & 0x3) == 3, "RX STBC 3-streams");
281 PRINT_HT_CAP((htc
->cap
& BIT(10)), "HT Delayed Block Ack");
283 PRINT_HT_CAP(!(htc
->cap
& BIT(11)), "Max AMSDU length: "
285 PRINT_HT_CAP((htc
->cap
& BIT(11)), "Max AMSDU length: "
289 * For beacons and probe response this would mean the BSS
290 * does or does not allow the usage of DSSS/CCK HT40.
291 * Otherwise it means the STA does or does not use
294 PRINT_HT_CAP((htc
->cap
& BIT(12)), "DSSS/CCK HT40");
295 PRINT_HT_CAP(!(htc
->cap
& BIT(12)), "No DSSS/CCK HT40");
297 /* BIT(13) is reserved */
299 PRINT_HT_CAP((htc
->cap
& BIT(14)), "40 MHz Intolerant");
301 PRINT_HT_CAP((htc
->cap
& BIT(15)), "L-SIG TXOP protection");
303 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "ampdu factor/density: %d/%d\n",
304 htc
->ampdu_factor
, htc
->ampdu_density
);
305 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "MCS mask:");
307 for (i
= 0; i
< IEEE80211_HT_MCS_MASK_LEN
; i
++)
308 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, " %.2x",
309 htc
->mcs
.rx_mask
[i
]);
310 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "\n");
312 /* If not set this is meaningless */
313 if (le16_to_cpu(htc
->mcs
.rx_highest
)) {
314 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
,
315 "MCS rx highest: %d Mbps\n",
316 le16_to_cpu(htc
->mcs
.rx_highest
));
319 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "MCS tx params: %x\n",
323 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
- buf
);
327 static ssize_t
sta_current_tx_rate_read(struct file
*file
, char __user
*userbuf
,
328 size_t count
, loff_t
*ppos
)
330 struct sta_info
*sta
= file
->private_data
;
331 struct rate_info rinfo
;
333 sta_set_rate_info_tx(sta
, &sta
->last_tx_rate
, &rinfo
);
334 rate
= cfg80211_calculate_bitrate(&rinfo
);
336 return mac80211_format_buffer(userbuf
, count
, ppos
,
340 STA_OPS(current_tx_rate
);
342 static ssize_t
sta_last_rx_rate_read(struct file
*file
, char __user
*userbuf
,
343 size_t count
, loff_t
*ppos
)
345 struct sta_info
*sta
= file
->private_data
;
346 struct rate_info rinfo
;
349 sta_set_rate_info_rx(sta
, &rinfo
);
351 rate
= cfg80211_calculate_bitrate(&rinfo
);
353 return mac80211_format_buffer(userbuf
, count
, ppos
,
357 STA_OPS(last_rx_rate
);
359 #define DEBUGFS_ADD(name) \
360 debugfs_create_file(#name, 0400, \
361 sta->debugfs.dir, sta, &sta_ ##name## _ops);
363 #define DEBUGFS_ADD_COUNTER(name, field) \
364 if (sizeof(sta->field) == sizeof(u32)) \
365 debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
366 (u32 *) &sta->field); \
368 debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
369 (u64 *) &sta->field);
371 void ieee80211_sta_debugfs_add(struct sta_info
*sta
)
373 struct ieee80211_local
*local
= sta
->local
;
374 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
375 struct dentry
*stations_dir
= sta
->sdata
->debugfs
.subdir_stations
;
378 sta
->debugfs
.add_has_run
= true;
383 snprintf(mac
, sizeof(mac
), "%pM", sta
->sta
.addr
);
386 * This might fail due to a race condition:
387 * When mac80211 unlinks a station, the debugfs entries
388 * remain, but it is already possible to link a new
389 * station with the same address which triggers adding
390 * it to debugfs; therefore, if the old station isn't
391 * destroyed quickly enough the old station's debugfs
392 * dir might still be around.
394 sta
->debugfs
.dir
= debugfs_create_dir(mac
, stations_dir
);
395 if (!sta
->debugfs
.dir
)
399 DEBUGFS_ADD(num_ps_buf_frames
);
400 DEBUGFS_ADD(inactive_ms
);
401 DEBUGFS_ADD(connected_time
);
402 DEBUGFS_ADD(last_seq_ctrl
);
403 DEBUGFS_ADD(agg_status
);
405 DEBUGFS_ADD(last_signal
);
406 DEBUGFS_ADD(ht_capa
);
407 DEBUGFS_ADD(last_ack_signal
);
408 DEBUGFS_ADD(current_tx_rate
);
409 DEBUGFS_ADD(last_rx_rate
);
411 DEBUGFS_ADD_COUNTER(rx_packets
, rx_packets
);
412 DEBUGFS_ADD_COUNTER(tx_packets
, tx_packets
);
413 DEBUGFS_ADD_COUNTER(rx_bytes
, rx_bytes
);
414 DEBUGFS_ADD_COUNTER(tx_bytes
, tx_bytes
);
415 DEBUGFS_ADD_COUNTER(rx_duplicates
, num_duplicates
);
416 DEBUGFS_ADD_COUNTER(rx_fragments
, rx_fragments
);
417 DEBUGFS_ADD_COUNTER(rx_dropped
, rx_dropped
);
418 DEBUGFS_ADD_COUNTER(tx_fragments
, tx_fragments
);
419 DEBUGFS_ADD_COUNTER(tx_filtered
, tx_filtered_count
);
420 DEBUGFS_ADD_COUNTER(tx_retry_failed
, tx_retry_failed
);
421 DEBUGFS_ADD_COUNTER(tx_retry_count
, tx_retry_count
);
422 DEBUGFS_ADD_COUNTER(wep_weak_iv_count
, wep_weak_iv_count
);
424 drv_sta_add_debugfs(local
, sdata
, &sta
->sta
, sta
->debugfs
.dir
);
427 void ieee80211_sta_debugfs_remove(struct sta_info
*sta
)
429 struct ieee80211_local
*local
= sta
->local
;
430 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
432 drv_sta_remove_debugfs(local
, sdata
, &sta
->sta
, sta
->debugfs
.dir
);
433 debugfs_remove_recursive(sta
->debugfs
.dir
);
434 sta
->debugfs
.dir
= NULL
;