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"
20 #define STA_READ(name, field, format_string) \
21 static ssize_t sta_ ##name## _read(struct file *file, \
22 char __user *userbuf, \
23 size_t count, loff_t *ppos) \
25 struct sta_info *sta = file->private_data; \
26 return mac80211_format_buffer(userbuf, count, ppos, \
27 format_string, sta->field); \
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")
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, \
37 .llseek = generic_file_llseek, \
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, \
45 .llseek = generic_file_llseek, \
48 #define STA_FILE(name, field, format) \
49 STA_READ_##format(name, field) \
52 STA_FILE(aid
, sta
.aid
, D
);
53 STA_FILE(dev
, sdata
->name
, S
);
54 STA_FILE(last_signal
, last_signal
, D
);
56 static ssize_t
sta_flags_read(struct file
*file
, char __user
*userbuf
,
57 size_t count
, loff_t
*ppos
)
60 struct sta_info
*sta
= file
->private_data
;
63 test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
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%s%s",
67 TEST(AUTH
), TEST(ASSOC
), TEST(PS_STA
),
68 TEST(PS_DRIVER
), TEST(AUTHORIZED
),
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
), TEST(4ADDR_EVENT
),
74 TEST(INSERTED
), TEST(RATE_CONTROL
));
76 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, res
);
80 static ssize_t
sta_num_ps_buf_frames_read(struct file
*file
,
82 size_t count
, loff_t
*ppos
)
84 struct sta_info
*sta
= file
->private_data
;
85 char buf
[17*IEEE80211_NUM_ACS
], *p
= buf
;
88 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
89 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "AC%d: %d\n", ac
,
90 skb_queue_len(&sta
->ps_tx_buf
[ac
]) +
91 skb_queue_len(&sta
->tx_filtered
[ac
]));
92 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
- buf
);
94 STA_OPS(num_ps_buf_frames
);
96 static ssize_t
sta_inactive_ms_read(struct file
*file
, char __user
*userbuf
,
97 size_t count
, loff_t
*ppos
)
99 struct sta_info
*sta
= file
->private_data
;
100 return mac80211_format_buffer(userbuf
, count
, ppos
, "%d\n",
101 jiffies_to_msecs(jiffies
- sta
->last_rx
));
103 STA_OPS(inactive_ms
);
106 static ssize_t
sta_connected_time_read(struct file
*file
, char __user
*userbuf
,
107 size_t count
, loff_t
*ppos
)
109 struct sta_info
*sta
= file
->private_data
;
110 struct timespec uptime
;
112 long connected_time_secs
;
115 do_posix_clock_monotonic_gettime(&uptime
);
116 connected_time_secs
= uptime
.tv_sec
- sta
->last_connected
;
117 time_to_tm(connected_time_secs
, 0, &result
);
118 result
.tm_year
-= 70;
120 res
= scnprintf(buf
, sizeof(buf
),
121 "years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
122 result
.tm_year
, result
.tm_mon
, result
.tm_mday
,
123 result
.tm_hour
, result
.tm_min
, result
.tm_sec
);
124 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, res
);
126 STA_OPS(connected_time
);
130 static ssize_t
sta_last_seq_ctrl_read(struct file
*file
, char __user
*userbuf
,
131 size_t count
, loff_t
*ppos
)
133 char buf
[15*NUM_RX_DATA_QUEUES
], *p
= buf
;
135 struct sta_info
*sta
= file
->private_data
;
136 for (i
= 0; i
< NUM_RX_DATA_QUEUES
; i
++)
137 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "%x ",
138 le16_to_cpu(sta
->last_seq_ctrl
[i
]));
139 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "\n");
140 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
- buf
);
142 STA_OPS(last_seq_ctrl
);
144 static ssize_t
sta_agg_status_read(struct file
*file
, char __user
*userbuf
,
145 size_t count
, loff_t
*ppos
)
147 char buf
[71 + STA_TID_NUM
* 40], *p
= buf
;
149 struct sta_info
*sta
= file
->private_data
;
150 struct tid_ampdu_rx
*tid_rx
;
151 struct tid_ampdu_tx
*tid_tx
;
155 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "next dialog_token: %#02x\n",
156 sta
->ampdu_mlme
.dialog_token_allocator
+ 1);
157 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
,
158 "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
160 for (i
= 0; i
< STA_TID_NUM
; i
++) {
161 tid_rx
= rcu_dereference(sta
->ampdu_mlme
.tid_rx
[i
]);
162 tid_tx
= rcu_dereference(sta
->ampdu_mlme
.tid_tx
[i
]);
164 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "%02d", i
);
165 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t\t%x", !!tid_rx
);
166 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t%#.2x",
167 tid_rx
? tid_rx
->dialog_token
: 0);
168 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t%#.3x",
169 tid_rx
? tid_rx
->ssn
: 0);
171 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t\t%x", !!tid_tx
);
172 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t%#.2x",
173 tid_tx
? tid_tx
->dialog_token
: 0);
174 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\t%03d",
175 tid_tx
? skb_queue_len(&tid_tx
->pending
) : 0);
176 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "\n");
180 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
- buf
);
183 static ssize_t
sta_agg_status_write(struct file
*file
, const char __user
*userbuf
,
184 size_t count
, loff_t
*ppos
)
186 char _buf
[12], *buf
= _buf
;
187 struct sta_info
*sta
= file
->private_data
;
192 if (count
> sizeof(_buf
))
195 if (copy_from_user(buf
, userbuf
, count
))
198 buf
[sizeof(_buf
) - 1] = '\0';
200 if (strncmp(buf
, "tx ", 3) == 0) {
203 } else if (strncmp(buf
, "rx ", 3) == 0) {
209 if (strncmp(buf
, "start ", 6) == 0) {
214 } else if (strncmp(buf
, "stop ", 5) == 0) {
220 tid
= simple_strtoul(buf
, NULL
, 0);
222 if (tid
>= STA_TID_NUM
)
227 ret
= ieee80211_start_tx_ba_session(&sta
->sta
, tid
, 5000);
229 ret
= ieee80211_stop_tx_ba_session(&sta
->sta
, tid
);
231 __ieee80211_stop_rx_ba_session(sta
, tid
, WLAN_BACK_RECIPIENT
,
238 STA_OPS_RW(agg_status
);
240 static ssize_t
sta_ht_capa_read(struct file
*file
, char __user
*userbuf
,
241 size_t count
, loff_t
*ppos
)
243 #define PRINT_HT_CAP(_cond, _str) \
246 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
248 char buf
[512], *p
= buf
;
250 struct sta_info
*sta
= file
->private_data
;
251 struct ieee80211_sta_ht_cap
*htc
= &sta
->sta
.ht_cap
;
253 p
+= scnprintf(p
, sizeof(buf
) + buf
- p
, "ht %ssupported\n",
254 htc
->ht_supported
? "" : "not ");
255 if (htc
->ht_supported
) {
256 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "cap: %#.4x\n", htc
->cap
);
258 PRINT_HT_CAP((htc
->cap
& BIT(0)), "RX LDPC");
259 PRINT_HT_CAP((htc
->cap
& BIT(1)), "HT20/HT40");
260 PRINT_HT_CAP(!(htc
->cap
& BIT(1)), "HT20");
262 PRINT_HT_CAP(((htc
->cap
>> 2) & 0x3) == 0, "Static SM Power Save");
263 PRINT_HT_CAP(((htc
->cap
>> 2) & 0x3) == 1, "Dynamic SM Power Save");
264 PRINT_HT_CAP(((htc
->cap
>> 2) & 0x3) == 3, "SM Power Save disabled");
266 PRINT_HT_CAP((htc
->cap
& BIT(4)), "RX Greenfield");
267 PRINT_HT_CAP((htc
->cap
& BIT(5)), "RX HT20 SGI");
268 PRINT_HT_CAP((htc
->cap
& BIT(6)), "RX HT40 SGI");
269 PRINT_HT_CAP((htc
->cap
& BIT(7)), "TX STBC");
271 PRINT_HT_CAP(((htc
->cap
>> 8) & 0x3) == 0, "No RX STBC");
272 PRINT_HT_CAP(((htc
->cap
>> 8) & 0x3) == 1, "RX STBC 1-stream");
273 PRINT_HT_CAP(((htc
->cap
>> 8) & 0x3) == 2, "RX STBC 2-streams");
274 PRINT_HT_CAP(((htc
->cap
>> 8) & 0x3) == 3, "RX STBC 3-streams");
276 PRINT_HT_CAP((htc
->cap
& BIT(10)), "HT Delayed Block Ack");
278 PRINT_HT_CAP(!(htc
->cap
& BIT(11)), "Max AMSDU length: "
280 PRINT_HT_CAP((htc
->cap
& BIT(11)), "Max AMSDU length: "
284 * For beacons and probe response this would mean the BSS
285 * does or does not allow the usage of DSSS/CCK HT40.
286 * Otherwise it means the STA does or does not use
289 PRINT_HT_CAP((htc
->cap
& BIT(12)), "DSSS/CCK HT40");
290 PRINT_HT_CAP(!(htc
->cap
& BIT(12)), "No DSSS/CCK HT40");
292 /* BIT(13) is reserved */
294 PRINT_HT_CAP((htc
->cap
& BIT(14)), "40 MHz Intolerant");
296 PRINT_HT_CAP((htc
->cap
& BIT(15)), "L-SIG TXOP protection");
298 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "ampdu factor/density: %d/%d\n",
299 htc
->ampdu_factor
, htc
->ampdu_density
);
300 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "MCS mask:");
302 for (i
= 0; i
< IEEE80211_HT_MCS_MASK_LEN
; i
++)
303 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, " %.2x",
304 htc
->mcs
.rx_mask
[i
]);
305 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "\n");
307 /* If not set this is meaningless */
308 if (le16_to_cpu(htc
->mcs
.rx_highest
)) {
309 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
,
310 "MCS rx highest: %d Mbps\n",
311 le16_to_cpu(htc
->mcs
.rx_highest
));
314 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
, "MCS tx params: %x\n",
318 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
- buf
);
322 #define DEBUGFS_ADD(name) \
323 debugfs_create_file(#name, 0400, \
324 sta->debugfs.dir, sta, &sta_ ##name## _ops);
326 #define DEBUGFS_ADD_COUNTER(name, field) \
327 if (sizeof(sta->field) == sizeof(u32)) \
328 debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
329 (u32 *) &sta->field); \
331 debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
332 (u64 *) &sta->field);
334 void ieee80211_sta_debugfs_add(struct sta_info
*sta
)
336 struct dentry
*stations_dir
= sta
->sdata
->debugfs
.subdir_stations
;
339 sta
->debugfs
.add_has_run
= true;
344 snprintf(mac
, sizeof(mac
), "%pM", sta
->sta
.addr
);
347 * This might fail due to a race condition:
348 * When mac80211 unlinks a station, the debugfs entries
349 * remain, but it is already possible to link a new
350 * station with the same address which triggers adding
351 * it to debugfs; therefore, if the old station isn't
352 * destroyed quickly enough the old station's debugfs
353 * dir might still be around.
355 sta
->debugfs
.dir
= debugfs_create_dir(mac
, stations_dir
);
356 if (!sta
->debugfs
.dir
)
360 DEBUGFS_ADD(num_ps_buf_frames
);
361 DEBUGFS_ADD(inactive_ms
);
362 DEBUGFS_ADD(connected_time
);
363 DEBUGFS_ADD(last_seq_ctrl
);
364 DEBUGFS_ADD(agg_status
);
366 DEBUGFS_ADD(last_signal
);
367 DEBUGFS_ADD(ht_capa
);
369 DEBUGFS_ADD_COUNTER(rx_packets
, rx_packets
);
370 DEBUGFS_ADD_COUNTER(tx_packets
, tx_packets
);
371 DEBUGFS_ADD_COUNTER(rx_bytes
, rx_bytes
);
372 DEBUGFS_ADD_COUNTER(tx_bytes
, tx_bytes
);
373 DEBUGFS_ADD_COUNTER(rx_duplicates
, num_duplicates
);
374 DEBUGFS_ADD_COUNTER(rx_fragments
, rx_fragments
);
375 DEBUGFS_ADD_COUNTER(rx_dropped
, rx_dropped
);
376 DEBUGFS_ADD_COUNTER(tx_fragments
, tx_fragments
);
377 DEBUGFS_ADD_COUNTER(tx_filtered
, tx_filtered_count
);
378 DEBUGFS_ADD_COUNTER(tx_retry_failed
, tx_retry_failed
);
379 DEBUGFS_ADD_COUNTER(tx_retry_count
, tx_retry_count
);
380 DEBUGFS_ADD_COUNTER(wep_weak_iv_count
, wep_weak_iv_count
);
383 void ieee80211_sta_debugfs_remove(struct sta_info
*sta
)
385 debugfs_remove_recursive(sta
->debugfs
.dir
);
386 sta
->debugfs
.dir
= NULL
;