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";
31 case MODE_ATHEROS_TURBO:
32 return "Atheros Turbo (5 GHz)";
38 static ssize_t modes_read(struct file *file, char __user *userbuf,
39 size_t count, loff_t *ppos)
41 struct ieee80211_local *local = file->private_data;
42 struct ieee80211_hw_mode *mode;
43 char buf[150], *p = buf;
46 list_for_each_entry(mode, &local->modes_list, list) {
47 p += scnprintf(p, sizeof(buf)+buf-p,
48 "%s\n", ieee80211_mode_str(mode->mode));
51 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
54 static const struct file_operations modes_ops = {
56 .open = mac80211_open_file_generic,
59 #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
60 static ssize_t name## _read(struct file *file, char __user *userbuf, \
61 size_t count, loff_t *ppos) \
63 struct ieee80211_local *local = file->private_data; \
67 res = scnprintf(buf, buflen, fmt "\n", ##value); \
68 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
71 static const struct file_operations name## _ops = { \
72 .read = name## _read, \
73 .open = mac80211_open_file_generic, \
76 #define DEBUGFS_ADD(name) \
77 local->debugfs.name = debugfs_create_file(#name, 0444, phyd, \
80 #define DEBUGFS_DEL(name) \
81 debugfs_remove(local->debugfs.name); \
82 local->debugfs.name = NULL;
85 DEBUGFS_READONLY_FILE(channel, 20, "%d",
86 local->hw.conf.channel);
87 DEBUGFS_READONLY_FILE(frequency, 20, "%d",
89 DEBUGFS_READONLY_FILE(radar_detect, 20, "%d",
90 local->hw.conf.radar_detect);
91 DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d",
92 local->hw.conf.antenna_sel_tx);
93 DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d",
94 local->hw.conf.antenna_sel_rx);
95 DEBUGFS_READONLY_FILE(bridge_packets, 20, "%d",
96 local->bridge_packets);
97 DEBUGFS_READONLY_FILE(key_tx_rx_threshold, 20, "%d",
98 local->key_tx_rx_threshold);
99 DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
100 local->rts_threshold);
101 DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
102 local->fragmentation_threshold);
103 DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
104 local->short_retry_limit);
105 DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
106 local->long_retry_limit);
107 DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
108 local->total_ps_buffered);
109 DEBUGFS_READONLY_FILE(mode, 20, "%s",
110 ieee80211_mode_str(local->hw.conf.phymode));
111 DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x",
112 local->wep_iv & 0xffffff);
113 DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
114 local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>");
116 /* statistics stuff */
118 static inline int rtnl_lock_local(struct ieee80211_local *local)
121 if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) {
128 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
129 DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
131 static ssize_t format_devstat_counter(struct ieee80211_local *local,
132 char __user *userbuf,
133 size_t count, loff_t *ppos,
134 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
137 struct ieee80211_low_level_stats stats;
141 if (!local->ops->get_stats)
144 res = rtnl_lock_local(local);
148 res = local->ops->get_stats(local_to_hw(local), &stats);
151 res = printvalue(&stats, buf, sizeof(buf));
152 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
155 #define DEBUGFS_DEVSTATS_FILE(name) \
156 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
157 char *buf, int buflen) \
159 return scnprintf(buf, buflen, "%u\n", stats->name); \
161 static ssize_t stats_ ##name## _read(struct file *file, \
162 char __user *userbuf, \
163 size_t count, loff_t *ppos) \
165 return format_devstat_counter(file->private_data, \
169 print_devstats_##name); \
172 static const struct file_operations stats_ ##name## _ops = { \
173 .read = stats_ ##name## _read, \
174 .open = mac80211_open_file_generic, \
177 #define DEBUGFS_STATS_ADD(name) \
178 local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\
179 local, &stats_ ##name## _ops);
181 #define DEBUGFS_STATS_DEL(name) \
182 debugfs_remove(local->debugfs.stats.name); \
183 local->debugfs.stats.name = NULL;
185 DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
186 local->dot11TransmittedFragmentCount);
187 DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
188 local->dot11MulticastTransmittedFrameCount);
189 DEBUGFS_STATS_FILE(failed_count, 20, "%u",
190 local->dot11FailedCount);
191 DEBUGFS_STATS_FILE(retry_count, 20, "%u",
192 local->dot11RetryCount);
193 DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
194 local->dot11MultipleRetryCount);
195 DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
196 local->dot11FrameDuplicateCount);
197 DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
198 local->dot11ReceivedFragmentCount);
199 DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
200 local->dot11MulticastReceivedFrameCount);
201 DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
202 local->dot11TransmittedFrameCount);
203 DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u",
204 local->dot11WEPUndecryptableCount);
205 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
206 DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
207 local->tx_handlers_drop);
208 DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
209 local->tx_handlers_queued);
210 DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
211 local->tx_handlers_drop_unencrypted);
212 DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
213 local->tx_handlers_drop_fragment);
214 DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
215 local->tx_handlers_drop_wep);
216 DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
217 local->tx_handlers_drop_not_assoc);
218 DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
219 local->tx_handlers_drop_unauth_port);
220 DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
221 local->rx_handlers_drop);
222 DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
223 local->rx_handlers_queued);
224 DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
225 local->rx_handlers_drop_nullfunc);
226 DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
227 local->rx_handlers_drop_defrag);
228 DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
229 local->rx_handlers_drop_short);
230 DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
231 local->rx_handlers_drop_passive_scan);
232 DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
233 local->tx_expand_skb_head);
234 DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
235 local->tx_expand_skb_head_cloned);
236 DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
237 local->rx_expand_skb_head);
238 DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
239 local->rx_expand_skb_head2);
240 DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
241 local->rx_handlers_fragments);
242 DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
243 local->tx_status_drop);
245 static ssize_t stats_wme_rx_queue_read(struct file *file,
246 char __user *userbuf,
247 size_t count, loff_t *ppos)
249 struct ieee80211_local *local = file->private_data;
250 char buf[NUM_RX_DATA_QUEUES*15], *p = buf;
253 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
254 p += scnprintf(p, sizeof(buf)+buf-p,
255 "%u\n", local->wme_rx_queue[i]);
257 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
260 static const struct file_operations stats_wme_rx_queue_ops = {
261 .read = stats_wme_rx_queue_read,
262 .open = mac80211_open_file_generic,
265 static ssize_t stats_wme_tx_queue_read(struct file *file,
266 char __user *userbuf,
267 size_t count, loff_t *ppos)
269 struct ieee80211_local *local = file->private_data;
270 char buf[NUM_TX_DATA_QUEUES*15], *p = buf;
273 for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
274 p += scnprintf(p, sizeof(buf)+buf-p,
275 "%u\n", local->wme_tx_queue[i]);
277 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
280 static const struct file_operations stats_wme_tx_queue_ops = {
281 .read = stats_wme_tx_queue_read,
282 .open = mac80211_open_file_generic,
286 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
287 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
288 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
289 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
292 void debugfs_hw_add(struct ieee80211_local *local)
294 struct dentry *phyd = local->hw.wiphy->debugfsdir;
295 struct dentry *statsd;
300 local->debugfs.stations = debugfs_create_dir("stations", phyd);
301 local->debugfs.keys = debugfs_create_dir("keys", phyd);
303 DEBUGFS_ADD(channel);
304 DEBUGFS_ADD(frequency);
305 DEBUGFS_ADD(radar_detect);
306 DEBUGFS_ADD(antenna_sel_tx);
307 DEBUGFS_ADD(antenna_sel_rx);
308 DEBUGFS_ADD(bridge_packets);
309 DEBUGFS_ADD(key_tx_rx_threshold);
310 DEBUGFS_ADD(rts_threshold);
311 DEBUGFS_ADD(fragmentation_threshold);
312 DEBUGFS_ADD(short_retry_limit);
313 DEBUGFS_ADD(long_retry_limit);
314 DEBUGFS_ADD(total_ps_buffered);
319 statsd = debugfs_create_dir("statistics", phyd);
320 local->debugfs.statistics = statsd;
322 /* if the dir failed, don't put all the other things into the root! */
326 DEBUGFS_STATS_ADD(transmitted_fragment_count);
327 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
328 DEBUGFS_STATS_ADD(failed_count);
329 DEBUGFS_STATS_ADD(retry_count);
330 DEBUGFS_STATS_ADD(multiple_retry_count);
331 DEBUGFS_STATS_ADD(frame_duplicate_count);
332 DEBUGFS_STATS_ADD(received_fragment_count);
333 DEBUGFS_STATS_ADD(multicast_received_frame_count);
334 DEBUGFS_STATS_ADD(transmitted_frame_count);
335 DEBUGFS_STATS_ADD(wep_undecryptable_count);
336 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
337 DEBUGFS_STATS_ADD(tx_handlers_drop);
338 DEBUGFS_STATS_ADD(tx_handlers_queued);
339 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
340 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
341 DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
342 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
343 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
344 DEBUGFS_STATS_ADD(rx_handlers_drop);
345 DEBUGFS_STATS_ADD(rx_handlers_queued);
346 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
347 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
348 DEBUGFS_STATS_ADD(rx_handlers_drop_short);
349 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
350 DEBUGFS_STATS_ADD(tx_expand_skb_head);
351 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
352 DEBUGFS_STATS_ADD(rx_expand_skb_head);
353 DEBUGFS_STATS_ADD(rx_expand_skb_head2);
354 DEBUGFS_STATS_ADD(rx_handlers_fragments);
355 DEBUGFS_STATS_ADD(tx_status_drop);
356 DEBUGFS_STATS_ADD(wme_tx_queue);
357 DEBUGFS_STATS_ADD(wme_rx_queue);
359 DEBUGFS_STATS_ADD(dot11ACKFailureCount);
360 DEBUGFS_STATS_ADD(dot11RTSFailureCount);
361 DEBUGFS_STATS_ADD(dot11FCSErrorCount);
362 DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
365 void debugfs_hw_del(struct ieee80211_local *local)
367 DEBUGFS_DEL(channel);
368 DEBUGFS_DEL(frequency);
369 DEBUGFS_DEL(radar_detect);
370 DEBUGFS_DEL(antenna_sel_tx);
371 DEBUGFS_DEL(antenna_sel_rx);
372 DEBUGFS_DEL(bridge_packets);
373 DEBUGFS_DEL(key_tx_rx_threshold);
374 DEBUGFS_DEL(rts_threshold);
375 DEBUGFS_DEL(fragmentation_threshold);
376 DEBUGFS_DEL(short_retry_limit);
377 DEBUGFS_DEL(long_retry_limit);
378 DEBUGFS_DEL(total_ps_buffered);
383 DEBUGFS_STATS_DEL(transmitted_fragment_count);
384 DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
385 DEBUGFS_STATS_DEL(failed_count);
386 DEBUGFS_STATS_DEL(retry_count);
387 DEBUGFS_STATS_DEL(multiple_retry_count);
388 DEBUGFS_STATS_DEL(frame_duplicate_count);
389 DEBUGFS_STATS_DEL(received_fragment_count);
390 DEBUGFS_STATS_DEL(multicast_received_frame_count);
391 DEBUGFS_STATS_DEL(transmitted_frame_count);
392 DEBUGFS_STATS_DEL(wep_undecryptable_count);
393 DEBUGFS_STATS_DEL(num_scans);
394 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
395 DEBUGFS_STATS_DEL(tx_handlers_drop);
396 DEBUGFS_STATS_DEL(tx_handlers_queued);
397 DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted);
398 DEBUGFS_STATS_DEL(tx_handlers_drop_fragment);
399 DEBUGFS_STATS_DEL(tx_handlers_drop_wep);
400 DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc);
401 DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port);
402 DEBUGFS_STATS_DEL(rx_handlers_drop);
403 DEBUGFS_STATS_DEL(rx_handlers_queued);
404 DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc);
405 DEBUGFS_STATS_DEL(rx_handlers_drop_defrag);
406 DEBUGFS_STATS_DEL(rx_handlers_drop_short);
407 DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan);
408 DEBUGFS_STATS_DEL(tx_expand_skb_head);
409 DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned);
410 DEBUGFS_STATS_DEL(rx_expand_skb_head);
411 DEBUGFS_STATS_DEL(rx_expand_skb_head2);
412 DEBUGFS_STATS_DEL(rx_handlers_fragments);
413 DEBUGFS_STATS_DEL(tx_status_drop);
414 DEBUGFS_STATS_DEL(wme_tx_queue);
415 DEBUGFS_STATS_DEL(wme_rx_queue);
417 DEBUGFS_STATS_DEL(dot11ACKFailureCount);
418 DEBUGFS_STATS_DEL(dot11RTSFailureCount);
419 DEBUGFS_STATS_DEL(dot11FCSErrorCount);
420 DEBUGFS_STATS_DEL(dot11RTSSuccessCount);
422 debugfs_remove(local->debugfs.statistics);
423 local->debugfs.statistics = NULL;
424 debugfs_remove(local->debugfs.stations);
425 local->debugfs.stations = NULL;
426 debugfs_remove(local->debugfs.keys);
427 local->debugfs.keys = NULL;