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 int mac80211_open_file_generic(struct inode
*inode
, struct file
*file
)
18 file
->private_data
= inode
->i_private
;
22 static const char *ieee80211_mode_str(int mode
)
26 return "IEEE 802.11a";
28 return "IEEE 802.11b";
30 return "IEEE 802.11g";
36 static ssize_t
modes_read(struct file
*file
, char __user
*userbuf
,
37 size_t count
, loff_t
*ppos
)
39 struct ieee80211_local
*local
= file
->private_data
;
40 struct ieee80211_hw_mode
*mode
;
41 char buf
[150], *p
= buf
;
44 list_for_each_entry(mode
, &local
->modes_list
, list
) {
45 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
,
46 "%s\n", ieee80211_mode_str(mode
->mode
));
49 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
-buf
);
52 static const struct file_operations modes_ops
= {
54 .open
= mac80211_open_file_generic
,
57 #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
58 static ssize_t name## _read(struct file *file, char __user *userbuf, \
59 size_t count, loff_t *ppos) \
61 struct ieee80211_local *local = file->private_data; \
65 res = scnprintf(buf, buflen, fmt "\n", ##value); \
66 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
69 static const struct file_operations name## _ops = { \
70 .read = name## _read, \
71 .open = mac80211_open_file_generic, \
74 #define DEBUGFS_ADD(name) \
75 local->debugfs.name = debugfs_create_file(#name, 0444, phyd, \
78 #define DEBUGFS_DEL(name) \
79 debugfs_remove(local->debugfs.name); \
80 local->debugfs.name = NULL;
83 DEBUGFS_READONLY_FILE(channel
, 20, "%d",
84 local
->hw
.conf
.channel
);
85 DEBUGFS_READONLY_FILE(frequency
, 20, "%d",
87 DEBUGFS_READONLY_FILE(antenna_sel_tx
, 20, "%d",
88 local
->hw
.conf
.antenna_sel_tx
);
89 DEBUGFS_READONLY_FILE(antenna_sel_rx
, 20, "%d",
90 local
->hw
.conf
.antenna_sel_rx
);
91 DEBUGFS_READONLY_FILE(bridge_packets
, 20, "%d",
92 local
->bridge_packets
);
93 DEBUGFS_READONLY_FILE(key_tx_rx_threshold
, 20, "%d",
94 local
->key_tx_rx_threshold
);
95 DEBUGFS_READONLY_FILE(rts_threshold
, 20, "%d",
96 local
->rts_threshold
);
97 DEBUGFS_READONLY_FILE(fragmentation_threshold
, 20, "%d",
98 local
->fragmentation_threshold
);
99 DEBUGFS_READONLY_FILE(short_retry_limit
, 20, "%d",
100 local
->short_retry_limit
);
101 DEBUGFS_READONLY_FILE(long_retry_limit
, 20, "%d",
102 local
->long_retry_limit
);
103 DEBUGFS_READONLY_FILE(total_ps_buffered
, 20, "%d",
104 local
->total_ps_buffered
);
105 DEBUGFS_READONLY_FILE(mode
, 20, "%s",
106 ieee80211_mode_str(local
->hw
.conf
.phymode
));
107 DEBUGFS_READONLY_FILE(wep_iv
, 20, "%#06x",
108 local
->wep_iv
& 0xffffff);
109 DEBUGFS_READONLY_FILE(rate_ctrl_alg
, 100, "%s",
110 local
->rate_ctrl
? local
->rate_ctrl
->ops
->name
: "<unset>");
112 /* statistics stuff */
114 static inline int rtnl_lock_local(struct ieee80211_local
*local
)
117 if (unlikely(local
->reg_state
!= IEEE80211_DEV_REGISTERED
)) {
124 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
125 DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
127 static ssize_t
format_devstat_counter(struct ieee80211_local
*local
,
128 char __user
*userbuf
,
129 size_t count
, loff_t
*ppos
,
130 int (*printvalue
)(struct ieee80211_low_level_stats
*stats
, char *buf
,
133 struct ieee80211_low_level_stats stats
;
137 if (!local
->ops
->get_stats
)
140 res
= rtnl_lock_local(local
);
144 res
= local
->ops
->get_stats(local_to_hw(local
), &stats
);
147 res
= printvalue(&stats
, buf
, sizeof(buf
));
148 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, res
);
151 #define DEBUGFS_DEVSTATS_FILE(name) \
152 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
153 char *buf, int buflen) \
155 return scnprintf(buf, buflen, "%u\n", stats->name); \
157 static ssize_t stats_ ##name## _read(struct file *file, \
158 char __user *userbuf, \
159 size_t count, loff_t *ppos) \
161 return format_devstat_counter(file->private_data, \
165 print_devstats_##name); \
168 static const struct file_operations stats_ ##name## _ops = { \
169 .read = stats_ ##name## _read, \
170 .open = mac80211_open_file_generic, \
173 #define DEBUGFS_STATS_ADD(name) \
174 local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\
175 local, &stats_ ##name## _ops);
177 #define DEBUGFS_STATS_DEL(name) \
178 debugfs_remove(local->debugfs.stats.name); \
179 local->debugfs.stats.name = NULL;
181 DEBUGFS_STATS_FILE(transmitted_fragment_count
, 20, "%u",
182 local
->dot11TransmittedFragmentCount
);
183 DEBUGFS_STATS_FILE(multicast_transmitted_frame_count
, 20, "%u",
184 local
->dot11MulticastTransmittedFrameCount
);
185 DEBUGFS_STATS_FILE(failed_count
, 20, "%u",
186 local
->dot11FailedCount
);
187 DEBUGFS_STATS_FILE(retry_count
, 20, "%u",
188 local
->dot11RetryCount
);
189 DEBUGFS_STATS_FILE(multiple_retry_count
, 20, "%u",
190 local
->dot11MultipleRetryCount
);
191 DEBUGFS_STATS_FILE(frame_duplicate_count
, 20, "%u",
192 local
->dot11FrameDuplicateCount
);
193 DEBUGFS_STATS_FILE(received_fragment_count
, 20, "%u",
194 local
->dot11ReceivedFragmentCount
);
195 DEBUGFS_STATS_FILE(multicast_received_frame_count
, 20, "%u",
196 local
->dot11MulticastReceivedFrameCount
);
197 DEBUGFS_STATS_FILE(transmitted_frame_count
, 20, "%u",
198 local
->dot11TransmittedFrameCount
);
199 DEBUGFS_STATS_FILE(wep_undecryptable_count
, 20, "%u",
200 local
->dot11WEPUndecryptableCount
);
201 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
202 DEBUGFS_STATS_FILE(tx_handlers_drop
, 20, "%u",
203 local
->tx_handlers_drop
);
204 DEBUGFS_STATS_FILE(tx_handlers_queued
, 20, "%u",
205 local
->tx_handlers_queued
);
206 DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted
, 20, "%u",
207 local
->tx_handlers_drop_unencrypted
);
208 DEBUGFS_STATS_FILE(tx_handlers_drop_fragment
, 20, "%u",
209 local
->tx_handlers_drop_fragment
);
210 DEBUGFS_STATS_FILE(tx_handlers_drop_wep
, 20, "%u",
211 local
->tx_handlers_drop_wep
);
212 DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc
, 20, "%u",
213 local
->tx_handlers_drop_not_assoc
);
214 DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port
, 20, "%u",
215 local
->tx_handlers_drop_unauth_port
);
216 DEBUGFS_STATS_FILE(rx_handlers_drop
, 20, "%u",
217 local
->rx_handlers_drop
);
218 DEBUGFS_STATS_FILE(rx_handlers_queued
, 20, "%u",
219 local
->rx_handlers_queued
);
220 DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc
, 20, "%u",
221 local
->rx_handlers_drop_nullfunc
);
222 DEBUGFS_STATS_FILE(rx_handlers_drop_defrag
, 20, "%u",
223 local
->rx_handlers_drop_defrag
);
224 DEBUGFS_STATS_FILE(rx_handlers_drop_short
, 20, "%u",
225 local
->rx_handlers_drop_short
);
226 DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan
, 20, "%u",
227 local
->rx_handlers_drop_passive_scan
);
228 DEBUGFS_STATS_FILE(tx_expand_skb_head
, 20, "%u",
229 local
->tx_expand_skb_head
);
230 DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned
, 20, "%u",
231 local
->tx_expand_skb_head_cloned
);
232 DEBUGFS_STATS_FILE(rx_expand_skb_head
, 20, "%u",
233 local
->rx_expand_skb_head
);
234 DEBUGFS_STATS_FILE(rx_expand_skb_head2
, 20, "%u",
235 local
->rx_expand_skb_head2
);
236 DEBUGFS_STATS_FILE(rx_handlers_fragments
, 20, "%u",
237 local
->rx_handlers_fragments
);
238 DEBUGFS_STATS_FILE(tx_status_drop
, 20, "%u",
239 local
->tx_status_drop
);
241 static ssize_t
stats_wme_rx_queue_read(struct file
*file
,
242 char __user
*userbuf
,
243 size_t count
, loff_t
*ppos
)
245 struct ieee80211_local
*local
= file
->private_data
;
246 char buf
[NUM_RX_DATA_QUEUES
*15], *p
= buf
;
249 for (i
= 0; i
< NUM_RX_DATA_QUEUES
; i
++)
250 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
,
251 "%u\n", local
->wme_rx_queue
[i
]);
253 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
-buf
);
256 static const struct file_operations stats_wme_rx_queue_ops
= {
257 .read
= stats_wme_rx_queue_read
,
258 .open
= mac80211_open_file_generic
,
261 static ssize_t
stats_wme_tx_queue_read(struct file
*file
,
262 char __user
*userbuf
,
263 size_t count
, loff_t
*ppos
)
265 struct ieee80211_local
*local
= file
->private_data
;
266 char buf
[NUM_TX_DATA_QUEUES
*15], *p
= buf
;
269 for (i
= 0; i
< NUM_TX_DATA_QUEUES
; i
++)
270 p
+= scnprintf(p
, sizeof(buf
)+buf
-p
,
271 "%u\n", local
->wme_tx_queue
[i
]);
273 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, p
-buf
);
276 static const struct file_operations stats_wme_tx_queue_ops
= {
277 .read
= stats_wme_tx_queue_read
,
278 .open
= mac80211_open_file_generic
,
282 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount
);
283 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount
);
284 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount
);
285 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount
);
288 void debugfs_hw_add(struct ieee80211_local
*local
)
290 struct dentry
*phyd
= local
->hw
.wiphy
->debugfsdir
;
291 struct dentry
*statsd
;
296 local
->debugfs
.stations
= debugfs_create_dir("stations", phyd
);
297 local
->debugfs
.keys
= debugfs_create_dir("keys", phyd
);
299 DEBUGFS_ADD(channel
);
300 DEBUGFS_ADD(frequency
);
301 DEBUGFS_ADD(antenna_sel_tx
);
302 DEBUGFS_ADD(antenna_sel_rx
);
303 DEBUGFS_ADD(bridge_packets
);
304 DEBUGFS_ADD(key_tx_rx_threshold
);
305 DEBUGFS_ADD(rts_threshold
);
306 DEBUGFS_ADD(fragmentation_threshold
);
307 DEBUGFS_ADD(short_retry_limit
);
308 DEBUGFS_ADD(long_retry_limit
);
309 DEBUGFS_ADD(total_ps_buffered
);
314 statsd
= debugfs_create_dir("statistics", phyd
);
315 local
->debugfs
.statistics
= statsd
;
317 /* if the dir failed, don't put all the other things into the root! */
321 DEBUGFS_STATS_ADD(transmitted_fragment_count
);
322 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count
);
323 DEBUGFS_STATS_ADD(failed_count
);
324 DEBUGFS_STATS_ADD(retry_count
);
325 DEBUGFS_STATS_ADD(multiple_retry_count
);
326 DEBUGFS_STATS_ADD(frame_duplicate_count
);
327 DEBUGFS_STATS_ADD(received_fragment_count
);
328 DEBUGFS_STATS_ADD(multicast_received_frame_count
);
329 DEBUGFS_STATS_ADD(transmitted_frame_count
);
330 DEBUGFS_STATS_ADD(wep_undecryptable_count
);
331 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
332 DEBUGFS_STATS_ADD(tx_handlers_drop
);
333 DEBUGFS_STATS_ADD(tx_handlers_queued
);
334 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted
);
335 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment
);
336 DEBUGFS_STATS_ADD(tx_handlers_drop_wep
);
337 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc
);
338 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port
);
339 DEBUGFS_STATS_ADD(rx_handlers_drop
);
340 DEBUGFS_STATS_ADD(rx_handlers_queued
);
341 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc
);
342 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag
);
343 DEBUGFS_STATS_ADD(rx_handlers_drop_short
);
344 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan
);
345 DEBUGFS_STATS_ADD(tx_expand_skb_head
);
346 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned
);
347 DEBUGFS_STATS_ADD(rx_expand_skb_head
);
348 DEBUGFS_STATS_ADD(rx_expand_skb_head2
);
349 DEBUGFS_STATS_ADD(rx_handlers_fragments
);
350 DEBUGFS_STATS_ADD(tx_status_drop
);
351 DEBUGFS_STATS_ADD(wme_tx_queue
);
352 DEBUGFS_STATS_ADD(wme_rx_queue
);
354 DEBUGFS_STATS_ADD(dot11ACKFailureCount
);
355 DEBUGFS_STATS_ADD(dot11RTSFailureCount
);
356 DEBUGFS_STATS_ADD(dot11FCSErrorCount
);
357 DEBUGFS_STATS_ADD(dot11RTSSuccessCount
);
360 void debugfs_hw_del(struct ieee80211_local
*local
)
362 DEBUGFS_DEL(channel
);
363 DEBUGFS_DEL(frequency
);
364 DEBUGFS_DEL(antenna_sel_tx
);
365 DEBUGFS_DEL(antenna_sel_rx
);
366 DEBUGFS_DEL(bridge_packets
);
367 DEBUGFS_DEL(key_tx_rx_threshold
);
368 DEBUGFS_DEL(rts_threshold
);
369 DEBUGFS_DEL(fragmentation_threshold
);
370 DEBUGFS_DEL(short_retry_limit
);
371 DEBUGFS_DEL(long_retry_limit
);
372 DEBUGFS_DEL(total_ps_buffered
);
377 DEBUGFS_STATS_DEL(transmitted_fragment_count
);
378 DEBUGFS_STATS_DEL(multicast_transmitted_frame_count
);
379 DEBUGFS_STATS_DEL(failed_count
);
380 DEBUGFS_STATS_DEL(retry_count
);
381 DEBUGFS_STATS_DEL(multiple_retry_count
);
382 DEBUGFS_STATS_DEL(frame_duplicate_count
);
383 DEBUGFS_STATS_DEL(received_fragment_count
);
384 DEBUGFS_STATS_DEL(multicast_received_frame_count
);
385 DEBUGFS_STATS_DEL(transmitted_frame_count
);
386 DEBUGFS_STATS_DEL(wep_undecryptable_count
);
387 DEBUGFS_STATS_DEL(num_scans
);
388 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
389 DEBUGFS_STATS_DEL(tx_handlers_drop
);
390 DEBUGFS_STATS_DEL(tx_handlers_queued
);
391 DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted
);
392 DEBUGFS_STATS_DEL(tx_handlers_drop_fragment
);
393 DEBUGFS_STATS_DEL(tx_handlers_drop_wep
);
394 DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc
);
395 DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port
);
396 DEBUGFS_STATS_DEL(rx_handlers_drop
);
397 DEBUGFS_STATS_DEL(rx_handlers_queued
);
398 DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc
);
399 DEBUGFS_STATS_DEL(rx_handlers_drop_defrag
);
400 DEBUGFS_STATS_DEL(rx_handlers_drop_short
);
401 DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan
);
402 DEBUGFS_STATS_DEL(tx_expand_skb_head
);
403 DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned
);
404 DEBUGFS_STATS_DEL(rx_expand_skb_head
);
405 DEBUGFS_STATS_DEL(rx_expand_skb_head2
);
406 DEBUGFS_STATS_DEL(rx_handlers_fragments
);
407 DEBUGFS_STATS_DEL(tx_status_drop
);
408 DEBUGFS_STATS_DEL(wme_tx_queue
);
409 DEBUGFS_STATS_DEL(wme_rx_queue
);
411 DEBUGFS_STATS_DEL(dot11ACKFailureCount
);
412 DEBUGFS_STATS_DEL(dot11RTSFailureCount
);
413 DEBUGFS_STATS_DEL(dot11FCSErrorCount
);
414 DEBUGFS_STATS_DEL(dot11RTSSuccessCount
);
416 debugfs_remove(local
->debugfs
.statistics
);
417 local
->debugfs
.statistics
= NULL
;
418 debugfs_remove(local
->debugfs
.stations
);
419 local
->debugfs
.stations
= NULL
;
420 debugfs_remove(local
->debugfs
.keys
);
421 local
->debugfs
.keys
= NULL
;