2 * mac80211 debugfs for wireless PHYs
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
10 #include <linux/debugfs.h>
11 #include <linux/rtnetlink.h>
12 #include "ieee80211_i.h"
13 #include "ieee80211_rate.h"
16 static inline int rtnl_lock_local(struct ieee80211_local
*local
)
19 if (unlikely(local
->reg_state
!= IEEE80211_DEV_REGISTERED
)) {
26 int mac80211_open_file_generic(struct inode
*inode
, struct file
*file
)
28 file
->private_data
= inode
->i_private
;
32 static const char *ieee80211_mode_str(int mode
)
36 return "IEEE 802.11a";
38 return "IEEE 802.11b";
40 return "IEEE 802.11g";
41 case MODE_ATHEROS_TURBO
:
42 return "Atheros Turbo (5 GHz)";
48 static ssize_t
modes_read(struct file
*file
, char __user
*userbuf
,
49 size_t count
, loff_t
*ppos
)
51 struct ieee80211_local
*local
= file
->private_data
;
52 struct ieee80211_hw_mode
*mode
;
53 char buf
[150], *p
= buf
;
56 list_for_each_entry(mode
, &local
->modes_list
, list
) {
57 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
,
58 "%s\n", ieee80211_mode_str(mode
->mode
));
61 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
-buf
);
64 static const struct file_operations modes_ops
= {
66 .open
= mac80211_open_file_generic
,
69 #define DEBUGFS_READ(name, buflen, fmt, value...) \
70 static ssize_t name## _read(struct file *file, char __user *userbuf, \
71 size_t count, loff_t *ppos) \
73 struct ieee80211_local *local = file->private_data; \
77 res = scnprintf(buf, buflen, fmt "\n", ##value); \
78 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
81 #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
82 DEBUGFS_READ(name, buflen, fmt, ## value) \
83 static const struct file_operations name## _ops = { \
84 .read = name## _read, \
85 .open = mac80211_open_file_generic, \
88 #define DEBUGFS_ADD_MODE(name, mode) \
89 local->debugfs.name = debugfs_create_file(#name, mode, phyd, \
92 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0444)
94 #define DEBUGFS_DEL(name) \
95 debugfs_remove(local->debugfs.name); \
96 local->debugfs.name = NULL;
99 DEBUGFS_READONLY_FILE(channel
, 20, "%d",
100 local
->hw
.conf
.channel
);
101 DEBUGFS_READONLY_FILE(frequency
, 20, "%d",
102 local
->hw
.conf
.freq
);
103 DEBUGFS_READONLY_FILE(radar_detect
, 20, "%d",
104 local
->hw
.conf
.radar_detect
);
105 DEBUGFS_READONLY_FILE(antenna_sel_tx
, 20, "%d",
106 local
->hw
.conf
.antenna_sel_tx
);
107 DEBUGFS_READONLY_FILE(antenna_sel_rx
, 20, "%d",
108 local
->hw
.conf
.antenna_sel_rx
);
109 DEBUGFS_READONLY_FILE(bridge_packets
, 20, "%d",
110 local
->bridge_packets
);
111 DEBUGFS_READONLY_FILE(key_tx_rx_threshold
, 20, "%d",
112 local
->key_tx_rx_threshold
);
113 DEBUGFS_READONLY_FILE(rts_threshold
, 20, "%d",
114 local
->rts_threshold
);
115 DEBUGFS_READONLY_FILE(fragmentation_threshold
, 20, "%d",
116 local
->fragmentation_threshold
);
117 DEBUGFS_READONLY_FILE(short_retry_limit
, 20, "%d",
118 local
->short_retry_limit
);
119 DEBUGFS_READONLY_FILE(long_retry_limit
, 20, "%d",
120 local
->long_retry_limit
);
121 DEBUGFS_READONLY_FILE(total_ps_buffered
, 20, "%d",
122 local
->total_ps_buffered
);
123 DEBUGFS_READONLY_FILE(mode
, 20, "%s",
124 ieee80211_mode_str(local
->hw
.conf
.phymode
));
125 DEBUGFS_READONLY_FILE(wep_iv
, 20, "%#06x",
126 local
->wep_iv
& 0xffffff);
127 DEBUGFS_READONLY_FILE(tx_power_reduction
, 20, "%d.%d dBm",
128 local
->hw
.conf
.tx_power_reduction
/ 10,
129 local
->hw
.conf
.tx_power_reduction
& 10);
131 DEBUGFS_READ(rate_ctrl_alg
, 100, "%s",
132 local
->rate_ctrl
? local
->rate_ctrl
->ops
->name
: "<unset>");
134 static ssize_t
rate_ctrl_alg_write(struct file
*file
, const char __user
*userbuf
,
135 size_t count
, loff_t
*ppos
)
137 struct ieee80211_local
*local
= file
->private_data
;
142 buf_size
= min(count
, ARRAY_SIZE(buf
) - 1);
143 if (copy_from_user(buf
, userbuf
, buf_size
))
145 buf
[buf_size
] = '\0';
146 res
= rtnl_lock_local(local
);
149 res
= ieee80211_init_rate_ctrl_alg(local
, buf
);
151 return res
< 0 ? res
: buf_size
;
154 static const struct file_operations rate_ctrl_alg_ops
= {
155 .read
= rate_ctrl_alg_read
,
156 .write
= rate_ctrl_alg_write
,
157 .open
= mac80211_open_file_generic
,
160 /* statistics stuff */
162 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
163 DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
165 static ssize_t
format_devstat_counter(struct ieee80211_local
*local
,
166 char __user
*userbuf
,
167 size_t count
, loff_t
*ppos
,
168 int (*printvalue
)(struct ieee80211_low_level_stats
*stats
, char *buf
,
171 struct ieee80211_low_level_stats stats
;
175 if (!local
->ops
->get_stats
)
178 res
= rtnl_lock_local(local
);
182 res
= local
->ops
->get_stats(local_to_hw(local
), &stats
);
185 res
= printvalue(&stats
, buf
, sizeof(buf
));
186 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, res
);
189 #define DEBUGFS_DEVSTATS_FILE(name) \
190 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
191 char *buf, int buflen) \
193 return scnprintf(buf, buflen, "%u\n", stats->name); \
195 static ssize_t stats_ ##name## _read(struct file *file, \
196 char __user *userbuf, \
197 size_t count, loff_t *ppos) \
199 return format_devstat_counter(file->private_data, \
203 print_devstats_##name); \
206 static const struct file_operations stats_ ##name## _ops = { \
207 .read = stats_ ##name## _read, \
208 .open = mac80211_open_file_generic, \
211 #define DEBUGFS_STATS_ADD(name) \
212 local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\
213 local, &stats_ ##name## _ops);
215 #define DEBUGFS_STATS_DEL(name) \
216 debugfs_remove(local->debugfs.stats.name); \
217 local->debugfs.stats.name = NULL;
219 DEBUGFS_STATS_FILE(transmitted_fragment_count
, 20, "%u",
220 local
->dot11TransmittedFragmentCount
);
221 DEBUGFS_STATS_FILE(multicast_transmitted_frame_count
, 20, "%u",
222 local
->dot11MulticastTransmittedFrameCount
);
223 DEBUGFS_STATS_FILE(failed_count
, 20, "%u",
224 local
->dot11FailedCount
);
225 DEBUGFS_STATS_FILE(retry_count
, 20, "%u",
226 local
->dot11RetryCount
);
227 DEBUGFS_STATS_FILE(multiple_retry_count
, 20, "%u",
228 local
->dot11MultipleRetryCount
);
229 DEBUGFS_STATS_FILE(frame_duplicate_count
, 20, "%u",
230 local
->dot11FrameDuplicateCount
);
231 DEBUGFS_STATS_FILE(received_fragment_count
, 20, "%u",
232 local
->dot11ReceivedFragmentCount
);
233 DEBUGFS_STATS_FILE(multicast_received_frame_count
, 20, "%u",
234 local
->dot11MulticastReceivedFrameCount
);
235 DEBUGFS_STATS_FILE(transmitted_frame_count
, 20, "%u",
236 local
->dot11TransmittedFrameCount
);
237 DEBUGFS_STATS_FILE(wep_undecryptable_count
, 20, "%u",
238 local
->dot11WEPUndecryptableCount
);
239 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
240 DEBUGFS_STATS_FILE(tx_handlers_drop
, 20, "%u",
241 local
->tx_handlers_drop
);
242 DEBUGFS_STATS_FILE(tx_handlers_queued
, 20, "%u",
243 local
->tx_handlers_queued
);
244 DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted
, 20, "%u",
245 local
->tx_handlers_drop_unencrypted
);
246 DEBUGFS_STATS_FILE(tx_handlers_drop_fragment
, 20, "%u",
247 local
->tx_handlers_drop_fragment
);
248 DEBUGFS_STATS_FILE(tx_handlers_drop_wep
, 20, "%u",
249 local
->tx_handlers_drop_wep
);
250 DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc
, 20, "%u",
251 local
->tx_handlers_drop_not_assoc
);
252 DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port
, 20, "%u",
253 local
->tx_handlers_drop_unauth_port
);
254 DEBUGFS_STATS_FILE(rx_handlers_drop
, 20, "%u",
255 local
->rx_handlers_drop
);
256 DEBUGFS_STATS_FILE(rx_handlers_queued
, 20, "%u",
257 local
->rx_handlers_queued
);
258 DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc
, 20, "%u",
259 local
->rx_handlers_drop_nullfunc
);
260 DEBUGFS_STATS_FILE(rx_handlers_drop_defrag
, 20, "%u",
261 local
->rx_handlers_drop_defrag
);
262 DEBUGFS_STATS_FILE(rx_handlers_drop_short
, 20, "%u",
263 local
->rx_handlers_drop_short
);
264 DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan
, 20, "%u",
265 local
->rx_handlers_drop_passive_scan
);
266 DEBUGFS_STATS_FILE(tx_expand_skb_head
, 20, "%u",
267 local
->tx_expand_skb_head
);
268 DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned
, 20, "%u",
269 local
->tx_expand_skb_head_cloned
);
270 DEBUGFS_STATS_FILE(rx_expand_skb_head
, 20, "%u",
271 local
->rx_expand_skb_head
);
272 DEBUGFS_STATS_FILE(rx_expand_skb_head2
, 20, "%u",
273 local
->rx_expand_skb_head2
);
274 DEBUGFS_STATS_FILE(rx_handlers_fragments
, 20, "%u",
275 local
->rx_handlers_fragments
);
276 DEBUGFS_STATS_FILE(tx_status_drop
, 20, "%u",
277 local
->tx_status_drop
);
279 static ssize_t
stats_wme_rx_queue_read(struct file
*file
,
280 char __user
*userbuf
,
281 size_t count
, loff_t
*ppos
)
283 struct ieee80211_local
*local
= file
->private_data
;
284 char buf
[NUM_RX_DATA_QUEUES
*15], *p
= buf
;
287 for (i
= 0; i
< NUM_RX_DATA_QUEUES
; i
++)
288 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
,
289 "%u\n", local
->wme_rx_queue
[i
]);
291 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
-buf
);
294 static const struct file_operations stats_wme_rx_queue_ops
= {
295 .read
= stats_wme_rx_queue_read
,
296 .open
= mac80211_open_file_generic
,
299 static ssize_t
stats_wme_tx_queue_read(struct file
*file
,
300 char __user
*userbuf
,
301 size_t count
, loff_t
*ppos
)
303 struct ieee80211_local
*local
= file
->private_data
;
304 char buf
[NUM_TX_DATA_QUEUES
*15], *p
= buf
;
307 for (i
= 0; i
< NUM_TX_DATA_QUEUES
; i
++)
308 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
,
309 "%u\n", local
->wme_tx_queue
[i
]);
311 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
-buf
);
314 static const struct file_operations stats_wme_tx_queue_ops
= {
315 .read
= stats_wme_tx_queue_read
,
316 .open
= mac80211_open_file_generic
,
320 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount
);
321 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount
);
322 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount
);
323 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount
);
326 void debugfs_hw_add(struct ieee80211_local
*local
)
328 struct dentry
*phyd
= local
->hw
.wiphy
->debugfsdir
;
329 struct dentry
*statsd
;
334 local
->debugfs
.stations
= debugfs_create_dir("stations", phyd
);
335 local
->debugfs
.keys
= debugfs_create_dir("keys", phyd
);
337 DEBUGFS_ADD(channel
);
338 DEBUGFS_ADD(frequency
);
339 DEBUGFS_ADD(radar_detect
);
340 DEBUGFS_ADD(antenna_sel_tx
);
341 DEBUGFS_ADD(antenna_sel_rx
);
342 DEBUGFS_ADD(bridge_packets
);
343 DEBUGFS_ADD(key_tx_rx_threshold
);
344 DEBUGFS_ADD(rts_threshold
);
345 DEBUGFS_ADD(fragmentation_threshold
);
346 DEBUGFS_ADD(short_retry_limit
);
347 DEBUGFS_ADD(long_retry_limit
);
348 DEBUGFS_ADD(total_ps_buffered
);
351 DEBUGFS_ADD(tx_power_reduction
);
352 DEBUGFS_ADD_MODE(rate_ctrl_alg
, 0644);
355 statsd
= debugfs_create_dir("statistics", phyd
);
356 local
->debugfs
.statistics
= statsd
;
358 /* if the dir failed, don't put all the other things into the root! */
362 DEBUGFS_STATS_ADD(transmitted_fragment_count
);
363 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count
);
364 DEBUGFS_STATS_ADD(failed_count
);
365 DEBUGFS_STATS_ADD(retry_count
);
366 DEBUGFS_STATS_ADD(multiple_retry_count
);
367 DEBUGFS_STATS_ADD(frame_duplicate_count
);
368 DEBUGFS_STATS_ADD(received_fragment_count
);
369 DEBUGFS_STATS_ADD(multicast_received_frame_count
);
370 DEBUGFS_STATS_ADD(transmitted_frame_count
);
371 DEBUGFS_STATS_ADD(wep_undecryptable_count
);
372 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
373 DEBUGFS_STATS_ADD(tx_handlers_drop
);
374 DEBUGFS_STATS_ADD(tx_handlers_queued
);
375 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted
);
376 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment
);
377 DEBUGFS_STATS_ADD(tx_handlers_drop_wep
);
378 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc
);
379 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port
);
380 DEBUGFS_STATS_ADD(rx_handlers_drop
);
381 DEBUGFS_STATS_ADD(rx_handlers_queued
);
382 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc
);
383 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag
);
384 DEBUGFS_STATS_ADD(rx_handlers_drop_short
);
385 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan
);
386 DEBUGFS_STATS_ADD(tx_expand_skb_head
);
387 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned
);
388 DEBUGFS_STATS_ADD(rx_expand_skb_head
);
389 DEBUGFS_STATS_ADD(rx_expand_skb_head2
);
390 DEBUGFS_STATS_ADD(rx_handlers_fragments
);
391 DEBUGFS_STATS_ADD(tx_status_drop
);
392 DEBUGFS_STATS_ADD(wme_tx_queue
);
393 DEBUGFS_STATS_ADD(wme_rx_queue
);
395 DEBUGFS_STATS_ADD(dot11ACKFailureCount
);
396 DEBUGFS_STATS_ADD(dot11RTSFailureCount
);
397 DEBUGFS_STATS_ADD(dot11FCSErrorCount
);
398 DEBUGFS_STATS_ADD(dot11RTSSuccessCount
);
401 void debugfs_hw_del(struct ieee80211_local
*local
)
403 DEBUGFS_DEL(channel
);
404 DEBUGFS_DEL(frequency
);
405 DEBUGFS_DEL(radar_detect
);
406 DEBUGFS_DEL(antenna_sel_tx
);
407 DEBUGFS_DEL(antenna_sel_rx
);
408 DEBUGFS_DEL(bridge_packets
);
409 DEBUGFS_DEL(key_tx_rx_threshold
);
410 DEBUGFS_DEL(rts_threshold
);
411 DEBUGFS_DEL(fragmentation_threshold
);
412 DEBUGFS_DEL(short_retry_limit
);
413 DEBUGFS_DEL(long_retry_limit
);
414 DEBUGFS_DEL(total_ps_buffered
);
417 DEBUGFS_DEL(tx_power_reduction
);
418 DEBUGFS_DEL(rate_ctrl_alg
);
421 DEBUGFS_STATS_DEL(transmitted_fragment_count
);
422 DEBUGFS_STATS_DEL(multicast_transmitted_frame_count
);
423 DEBUGFS_STATS_DEL(failed_count
);
424 DEBUGFS_STATS_DEL(retry_count
);
425 DEBUGFS_STATS_DEL(multiple_retry_count
);
426 DEBUGFS_STATS_DEL(frame_duplicate_count
);
427 DEBUGFS_STATS_DEL(received_fragment_count
);
428 DEBUGFS_STATS_DEL(multicast_received_frame_count
);
429 DEBUGFS_STATS_DEL(transmitted_frame_count
);
430 DEBUGFS_STATS_DEL(wep_undecryptable_count
);
431 DEBUGFS_STATS_DEL(num_scans
);
432 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
433 DEBUGFS_STATS_DEL(tx_handlers_drop
);
434 DEBUGFS_STATS_DEL(tx_handlers_queued
);
435 DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted
);
436 DEBUGFS_STATS_DEL(tx_handlers_drop_fragment
);
437 DEBUGFS_STATS_DEL(tx_handlers_drop_wep
);
438 DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc
);
439 DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port
);
440 DEBUGFS_STATS_DEL(rx_handlers_drop
);
441 DEBUGFS_STATS_DEL(rx_handlers_queued
);
442 DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc
);
443 DEBUGFS_STATS_DEL(rx_handlers_drop_defrag
);
444 DEBUGFS_STATS_DEL(rx_handlers_drop_short
);
445 DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan
);
446 DEBUGFS_STATS_DEL(tx_expand_skb_head
);
447 DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned
);
448 DEBUGFS_STATS_DEL(rx_expand_skb_head
);
449 DEBUGFS_STATS_DEL(rx_expand_skb_head2
);
450 DEBUGFS_STATS_DEL(rx_handlers_fragments
);
451 DEBUGFS_STATS_DEL(tx_status_drop
);
452 DEBUGFS_STATS_DEL(wme_tx_queue
);
453 DEBUGFS_STATS_DEL(wme_rx_queue
);
455 DEBUGFS_STATS_DEL(dot11ACKFailureCount
);
456 DEBUGFS_STATS_DEL(dot11RTSFailureCount
);
457 DEBUGFS_STATS_DEL(dot11FCSErrorCount
);
458 DEBUGFS_STATS_DEL(dot11RTSSuccessCount
);
460 debugfs_remove(local
->debugfs
.statistics
);
461 local
->debugfs
.statistics
= NULL
;
462 debugfs_remove(local
->debugfs
.stations
);
463 local
->debugfs
.stations
= NULL
;
464 debugfs_remove(local
->debugfs
.keys
);
465 local
->debugfs
.keys
= NULL
;