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 "driver-ops.h"
17 int mac80211_open_file_generic(struct inode
*inode
, struct file
*file
)
19 file
->private_data
= inode
->i_private
;
23 #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
24 static ssize_t name## _read(struct file *file, char __user *userbuf, \
25 size_t count, loff_t *ppos) \
27 struct ieee80211_local *local = file->private_data; \
31 res = scnprintf(buf, buflen, fmt "\n", ##value); \
32 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
35 static const struct file_operations name## _ops = { \
36 .read = name## _read, \
37 .open = mac80211_open_file_generic, \
40 #define DEBUGFS_ADD(name) \
41 local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \
44 #define DEBUGFS_ADD_MODE(name, mode) \
45 local->debugfs.name = debugfs_create_file(#name, mode, phyd, \
48 #define DEBUGFS_DEL(name) \
49 debugfs_remove(local->debugfs.name); \
50 local->debugfs.name = NULL;
53 DEBUGFS_READONLY_FILE(frequency
, 20, "%d",
54 local
->hw
.conf
.channel
->center_freq
);
55 DEBUGFS_READONLY_FILE(rts_threshold
, 20, "%d",
56 local
->hw
.wiphy
->rts_threshold
);
57 DEBUGFS_READONLY_FILE(fragmentation_threshold
, 20, "%d",
58 local
->hw
.wiphy
->frag_threshold
);
59 DEBUGFS_READONLY_FILE(short_retry_limit
, 20, "%d",
60 local
->hw
.wiphy
->retry_short
);
61 DEBUGFS_READONLY_FILE(long_retry_limit
, 20, "%d",
62 local
->hw
.wiphy
->retry_long
);
63 DEBUGFS_READONLY_FILE(total_ps_buffered
, 20, "%d",
64 local
->total_ps_buffered
);
65 DEBUGFS_READONLY_FILE(wep_iv
, 20, "%#08x",
66 local
->wep_iv
& 0xffffff);
67 DEBUGFS_READONLY_FILE(rate_ctrl_alg
, 100, "%s",
68 local
->rate_ctrl
? local
->rate_ctrl
->ops
->name
: "<unset>");
70 static ssize_t
tsf_read(struct file
*file
, char __user
*user_buf
,
71 size_t count
, loff_t
*ppos
)
73 struct ieee80211_local
*local
= file
->private_data
;
77 tsf
= drv_get_tsf(local
);
79 snprintf(buf
, sizeof(buf
), "0x%016llx\n", (unsigned long long) tsf
);
81 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 19);
84 static ssize_t
tsf_write(struct file
*file
,
85 const char __user
*user_buf
,
86 size_t count
, loff_t
*ppos
)
88 struct ieee80211_local
*local
= file
->private_data
;
89 unsigned long long tsf
;
93 len
= min(count
, sizeof(buf
) - 1);
94 if (copy_from_user(buf
, user_buf
, len
))
98 if (strncmp(buf
, "reset", 5) == 0) {
99 if (local
->ops
->reset_tsf
) {
100 drv_reset_tsf(local
);
101 printk(KERN_INFO
"%s: debugfs reset TSF\n", wiphy_name(local
->hw
.wiphy
));
104 tsf
= simple_strtoul(buf
, NULL
, 0);
105 if (local
->ops
->set_tsf
) {
106 drv_set_tsf(local
, tsf
);
107 printk(KERN_INFO
"%s: debugfs set TSF to %#018llx\n", wiphy_name(local
->hw
.wiphy
), tsf
);
114 static const struct file_operations tsf_ops
= {
117 .open
= mac80211_open_file_generic
120 static ssize_t
reset_write(struct file
*file
, const char __user
*user_buf
,
121 size_t count
, loff_t
*ppos
)
123 struct ieee80211_local
*local
= file
->private_data
;
126 __ieee80211_suspend(&local
->hw
);
127 __ieee80211_resume(&local
->hw
);
133 static const struct file_operations reset_ops
= {
134 .write
= reset_write
,
135 .open
= mac80211_open_file_generic
,
138 /* statistics stuff */
140 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
141 DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
143 static ssize_t
format_devstat_counter(struct ieee80211_local
*local
,
144 char __user
*userbuf
,
145 size_t count
, loff_t
*ppos
,
146 int (*printvalue
)(struct ieee80211_low_level_stats
*stats
, char *buf
,
149 struct ieee80211_low_level_stats stats
;
154 res
= drv_get_stats(local
, &stats
);
158 res
= printvalue(&stats
, buf
, sizeof(buf
));
159 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, res
);
162 #define DEBUGFS_DEVSTATS_FILE(name) \
163 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
164 char *buf, int buflen) \
166 return scnprintf(buf, buflen, "%u\n", stats->name); \
168 static ssize_t stats_ ##name## _read(struct file *file, \
169 char __user *userbuf, \
170 size_t count, loff_t *ppos) \
172 return format_devstat_counter(file->private_data, \
176 print_devstats_##name); \
179 static const struct file_operations stats_ ##name## _ops = { \
180 .read = stats_ ##name## _read, \
181 .open = mac80211_open_file_generic, \
184 #define DEBUGFS_STATS_ADD(name) \
185 local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\
186 local, &stats_ ##name## _ops);
188 #define DEBUGFS_STATS_DEL(name) \
189 debugfs_remove(local->debugfs.stats.name); \
190 local->debugfs.stats.name = NULL;
192 DEBUGFS_STATS_FILE(transmitted_fragment_count
, 20, "%u",
193 local
->dot11TransmittedFragmentCount
);
194 DEBUGFS_STATS_FILE(multicast_transmitted_frame_count
, 20, "%u",
195 local
->dot11MulticastTransmittedFrameCount
);
196 DEBUGFS_STATS_FILE(failed_count
, 20, "%u",
197 local
->dot11FailedCount
);
198 DEBUGFS_STATS_FILE(retry_count
, 20, "%u",
199 local
->dot11RetryCount
);
200 DEBUGFS_STATS_FILE(multiple_retry_count
, 20, "%u",
201 local
->dot11MultipleRetryCount
);
202 DEBUGFS_STATS_FILE(frame_duplicate_count
, 20, "%u",
203 local
->dot11FrameDuplicateCount
);
204 DEBUGFS_STATS_FILE(received_fragment_count
, 20, "%u",
205 local
->dot11ReceivedFragmentCount
);
206 DEBUGFS_STATS_FILE(multicast_received_frame_count
, 20, "%u",
207 local
->dot11MulticastReceivedFrameCount
);
208 DEBUGFS_STATS_FILE(transmitted_frame_count
, 20, "%u",
209 local
->dot11TransmittedFrameCount
);
210 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
211 DEBUGFS_STATS_FILE(tx_handlers_drop
, 20, "%u",
212 local
->tx_handlers_drop
);
213 DEBUGFS_STATS_FILE(tx_handlers_queued
, 20, "%u",
214 local
->tx_handlers_queued
);
215 DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted
, 20, "%u",
216 local
->tx_handlers_drop_unencrypted
);
217 DEBUGFS_STATS_FILE(tx_handlers_drop_fragment
, 20, "%u",
218 local
->tx_handlers_drop_fragment
);
219 DEBUGFS_STATS_FILE(tx_handlers_drop_wep
, 20, "%u",
220 local
->tx_handlers_drop_wep
);
221 DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc
, 20, "%u",
222 local
->tx_handlers_drop_not_assoc
);
223 DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port
, 20, "%u",
224 local
->tx_handlers_drop_unauth_port
);
225 DEBUGFS_STATS_FILE(rx_handlers_drop
, 20, "%u",
226 local
->rx_handlers_drop
);
227 DEBUGFS_STATS_FILE(rx_handlers_queued
, 20, "%u",
228 local
->rx_handlers_queued
);
229 DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc
, 20, "%u",
230 local
->rx_handlers_drop_nullfunc
);
231 DEBUGFS_STATS_FILE(rx_handlers_drop_defrag
, 20, "%u",
232 local
->rx_handlers_drop_defrag
);
233 DEBUGFS_STATS_FILE(rx_handlers_drop_short
, 20, "%u",
234 local
->rx_handlers_drop_short
);
235 DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan
, 20, "%u",
236 local
->rx_handlers_drop_passive_scan
);
237 DEBUGFS_STATS_FILE(tx_expand_skb_head
, 20, "%u",
238 local
->tx_expand_skb_head
);
239 DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned
, 20, "%u",
240 local
->tx_expand_skb_head_cloned
);
241 DEBUGFS_STATS_FILE(rx_expand_skb_head
, 20, "%u",
242 local
->rx_expand_skb_head
);
243 DEBUGFS_STATS_FILE(rx_expand_skb_head2
, 20, "%u",
244 local
->rx_expand_skb_head2
);
245 DEBUGFS_STATS_FILE(rx_handlers_fragments
, 20, "%u",
246 local
->rx_handlers_fragments
);
247 DEBUGFS_STATS_FILE(tx_status_drop
, 20, "%u",
248 local
->tx_status_drop
);
252 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount
);
253 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount
);
254 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount
);
255 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount
);
258 void debugfs_hw_add(struct ieee80211_local
*local
)
260 struct dentry
*phyd
= local
->hw
.wiphy
->debugfsdir
;
261 struct dentry
*statsd
;
266 local
->debugfs
.stations
= debugfs_create_dir("stations", phyd
);
267 local
->debugfs
.keys
= debugfs_create_dir("keys", phyd
);
269 DEBUGFS_ADD(frequency
);
270 DEBUGFS_ADD(rts_threshold
);
271 DEBUGFS_ADD(fragmentation_threshold
);
272 DEBUGFS_ADD(short_retry_limit
);
273 DEBUGFS_ADD(long_retry_limit
);
274 DEBUGFS_ADD(total_ps_buffered
);
277 DEBUGFS_ADD_MODE(reset
, 0200);
279 statsd
= debugfs_create_dir("statistics", phyd
);
280 local
->debugfs
.statistics
= statsd
;
282 /* if the dir failed, don't put all the other things into the root! */
286 DEBUGFS_STATS_ADD(transmitted_fragment_count
);
287 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count
);
288 DEBUGFS_STATS_ADD(failed_count
);
289 DEBUGFS_STATS_ADD(retry_count
);
290 DEBUGFS_STATS_ADD(multiple_retry_count
);
291 DEBUGFS_STATS_ADD(frame_duplicate_count
);
292 DEBUGFS_STATS_ADD(received_fragment_count
);
293 DEBUGFS_STATS_ADD(multicast_received_frame_count
);
294 DEBUGFS_STATS_ADD(transmitted_frame_count
);
295 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
296 DEBUGFS_STATS_ADD(tx_handlers_drop
);
297 DEBUGFS_STATS_ADD(tx_handlers_queued
);
298 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted
);
299 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment
);
300 DEBUGFS_STATS_ADD(tx_handlers_drop_wep
);
301 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc
);
302 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port
);
303 DEBUGFS_STATS_ADD(rx_handlers_drop
);
304 DEBUGFS_STATS_ADD(rx_handlers_queued
);
305 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc
);
306 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag
);
307 DEBUGFS_STATS_ADD(rx_handlers_drop_short
);
308 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan
);
309 DEBUGFS_STATS_ADD(tx_expand_skb_head
);
310 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned
);
311 DEBUGFS_STATS_ADD(rx_expand_skb_head
);
312 DEBUGFS_STATS_ADD(rx_expand_skb_head2
);
313 DEBUGFS_STATS_ADD(rx_handlers_fragments
);
314 DEBUGFS_STATS_ADD(tx_status_drop
);
316 DEBUGFS_STATS_ADD(dot11ACKFailureCount
);
317 DEBUGFS_STATS_ADD(dot11RTSFailureCount
);
318 DEBUGFS_STATS_ADD(dot11FCSErrorCount
);
319 DEBUGFS_STATS_ADD(dot11RTSSuccessCount
);
322 void debugfs_hw_del(struct ieee80211_local
*local
)
324 DEBUGFS_DEL(frequency
);
325 DEBUGFS_DEL(rts_threshold
);
326 DEBUGFS_DEL(fragmentation_threshold
);
327 DEBUGFS_DEL(short_retry_limit
);
328 DEBUGFS_DEL(long_retry_limit
);
329 DEBUGFS_DEL(total_ps_buffered
);
334 DEBUGFS_STATS_DEL(transmitted_fragment_count
);
335 DEBUGFS_STATS_DEL(multicast_transmitted_frame_count
);
336 DEBUGFS_STATS_DEL(failed_count
);
337 DEBUGFS_STATS_DEL(retry_count
);
338 DEBUGFS_STATS_DEL(multiple_retry_count
);
339 DEBUGFS_STATS_DEL(frame_duplicate_count
);
340 DEBUGFS_STATS_DEL(received_fragment_count
);
341 DEBUGFS_STATS_DEL(multicast_received_frame_count
);
342 DEBUGFS_STATS_DEL(transmitted_frame_count
);
343 DEBUGFS_STATS_DEL(num_scans
);
344 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
345 DEBUGFS_STATS_DEL(tx_handlers_drop
);
346 DEBUGFS_STATS_DEL(tx_handlers_queued
);
347 DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted
);
348 DEBUGFS_STATS_DEL(tx_handlers_drop_fragment
);
349 DEBUGFS_STATS_DEL(tx_handlers_drop_wep
);
350 DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc
);
351 DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port
);
352 DEBUGFS_STATS_DEL(rx_handlers_drop
);
353 DEBUGFS_STATS_DEL(rx_handlers_queued
);
354 DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc
);
355 DEBUGFS_STATS_DEL(rx_handlers_drop_defrag
);
356 DEBUGFS_STATS_DEL(rx_handlers_drop_short
);
357 DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan
);
358 DEBUGFS_STATS_DEL(tx_expand_skb_head
);
359 DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned
);
360 DEBUGFS_STATS_DEL(rx_expand_skb_head
);
361 DEBUGFS_STATS_DEL(rx_expand_skb_head2
);
362 DEBUGFS_STATS_DEL(rx_handlers_fragments
);
363 DEBUGFS_STATS_DEL(tx_status_drop
);
365 DEBUGFS_STATS_DEL(dot11ACKFailureCount
);
366 DEBUGFS_STATS_DEL(dot11RTSFailureCount
);
367 DEBUGFS_STATS_DEL(dot11FCSErrorCount
);
368 DEBUGFS_STATS_DEL(dot11RTSSuccessCount
);
370 debugfs_remove(local
->debugfs
.statistics
);
371 local
->debugfs
.statistics
= NULL
;
372 debugfs_remove(local
->debugfs
.stations
);
373 local
->debugfs
.stations
= NULL
;
374 debugfs_remove(local
->debugfs
.keys
);
375 local
->debugfs
.keys
= NULL
;