3 * mac80211 debugfs for wireless PHYs
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
11 #include <linux/debugfs.h>
12 #include <linux/rtnetlink.h>
13 #include "ieee80211_i.h"
14 #include "driver-ops.h"
18 int mac80211_open_file_generic(struct inode *inode, struct file *file)
20 file->private_data = inode->i_private;
24 #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
25 static ssize_t name## _read(struct file *file, char __user *userbuf, \
26 size_t count, loff_t *ppos) \
28 struct ieee80211_local *local = file->private_data; \
32 res = scnprintf(buf, buflen, fmt "\n", ##value); \
33 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
36 static const struct file_operations name## _ops = { \
37 .read = name## _read, \
38 .open = mac80211_open_file_generic, \
41 #define DEBUGFS_ADD(name) \
42 debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
44 #define DEBUGFS_ADD_MODE(name, mode) \
45 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
48 DEBUGFS_READONLY_FILE(frequency, 20, "%d",
49 local->hw.conf.channel->center_freq);
50 DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
51 local->total_ps_buffered);
52 DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",
53 local->wep_iv & 0xffffff);
54 DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
55 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
57 static ssize_t tsf_read(struct file *file, char __user *user_buf,
58 size_t count, loff_t *ppos)
60 struct ieee80211_local *local = file->private_data;
64 tsf = drv_get_tsf(local);
66 snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf);
68 return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
71 static ssize_t tsf_write(struct file *file,
72 const char __user *user_buf,
73 size_t count, loff_t *ppos)
75 struct ieee80211_local *local = file->private_data;
76 unsigned long long tsf;
80 len = min(count, sizeof(buf) - 1);
81 if (copy_from_user(buf, user_buf, len))
85 if (strncmp(buf, "reset", 5) == 0) {
86 if (local->ops->reset_tsf) {
88 printk(KERN_INFO "%s: debugfs reset TSF\n", wiphy_name(local->hw.wiphy));
91 tsf = simple_strtoul(buf, NULL, 0);
92 if (local->ops->set_tsf) {
93 drv_set_tsf(local, tsf);
94 printk(KERN_INFO "%s: debugfs set TSF to %#018llx\n", wiphy_name(local->hw.wiphy), tsf);
101 static const struct file_operations tsf_ops = {
104 .open = mac80211_open_file_generic
107 static ssize_t reset_write(struct file *file, const char __user *user_buf,
108 size_t count, loff_t *ppos)
110 struct ieee80211_local *local = file->private_data;
113 __ieee80211_suspend(&local->hw);
114 __ieee80211_resume(&local->hw);
120 static const struct file_operations reset_ops = {
121 .write = reset_write,
122 .open = mac80211_open_file_generic,
125 static ssize_t noack_read(struct file *file, char __user *user_buf,
126 size_t count, loff_t *ppos)
128 struct ieee80211_local *local = file->private_data;
132 res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test);
134 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
137 static ssize_t noack_write(struct file *file,
138 const char __user *user_buf,
139 size_t count, loff_t *ppos)
141 struct ieee80211_local *local = file->private_data;
145 len = min(count, sizeof(buf) - 1);
146 if (copy_from_user(buf, user_buf, len))
150 local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
155 static const struct file_operations noack_ops = {
157 .write = noack_write,
158 .open = mac80211_open_file_generic
161 static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf,
162 size_t count, loff_t *ppos)
164 struct ieee80211_local *local = file->private_data;
168 res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues);
170 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
173 static ssize_t uapsd_queues_write(struct file *file,
174 const char __user *user_buf,
175 size_t count, loff_t *ppos)
177 struct ieee80211_local *local = file->private_data;
183 len = min(count, sizeof(buf) - 1);
184 if (copy_from_user(buf, user_buf, len))
188 ret = strict_strtoul(buf, 0, &val);
193 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
196 local->uapsd_queues = val;
201 static const struct file_operations uapsd_queues_ops = {
202 .read = uapsd_queues_read,
203 .write = uapsd_queues_write,
204 .open = mac80211_open_file_generic
207 static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf,
208 size_t count, loff_t *ppos)
210 struct ieee80211_local *local = file->private_data;
214 res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len);
216 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
219 static ssize_t uapsd_max_sp_len_write(struct file *file,
220 const char __user *user_buf,
221 size_t count, loff_t *ppos)
223 struct ieee80211_local *local = file->private_data;
229 len = min(count, sizeof(buf) - 1);
230 if (copy_from_user(buf, user_buf, len))
234 ret = strict_strtoul(buf, 0, &val);
239 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
242 local->uapsd_max_sp_len = val;
247 static const struct file_operations uapsd_max_sp_len_ops = {
248 .read = uapsd_max_sp_len_read,
249 .write = uapsd_max_sp_len_write,
250 .open = mac80211_open_file_generic
253 static ssize_t channel_type_read(struct file *file, char __user *user_buf,
254 size_t count, loff_t *ppos)
256 struct ieee80211_local *local = file->private_data;
259 switch (local->hw.conf.channel_type) {
260 case NL80211_CHAN_NO_HT:
263 case NL80211_CHAN_HT20:
266 case NL80211_CHAN_HT40MINUS:
269 case NL80211_CHAN_HT40PLUS:
277 return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
280 static const struct file_operations channel_type_ops = {
281 .read = channel_type_read,
282 .open = mac80211_open_file_generic
285 static ssize_t queues_read(struct file *file, char __user *user_buf,
286 size_t count, loff_t *ppos)
288 struct ieee80211_local *local = file->private_data;
290 char buf[IEEE80211_MAX_QUEUES * 20];
293 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
294 for (q = 0; q < local->hw.queues; q++)
295 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
296 local->queue_stop_reasons[q],
297 skb_queue_len(&local->pending[q]));
298 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
300 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
303 static const struct file_operations queues_ops = {
305 .open = mac80211_open_file_generic
308 /* statistics stuff */
310 static ssize_t format_devstat_counter(struct ieee80211_local *local,
311 char __user *userbuf,
312 size_t count, loff_t *ppos,
313 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
316 struct ieee80211_low_level_stats stats;
321 res = drv_get_stats(local, &stats);
325 res = printvalue(&stats, buf, sizeof(buf));
326 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
329 #define DEBUGFS_DEVSTATS_FILE(name) \
330 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
331 char *buf, int buflen) \
333 return scnprintf(buf, buflen, "%u\n", stats->name); \
335 static ssize_t stats_ ##name## _read(struct file *file, \
336 char __user *userbuf, \
337 size_t count, loff_t *ppos) \
339 return format_devstat_counter(file->private_data, \
343 print_devstats_##name); \
346 static const struct file_operations stats_ ##name## _ops = { \
347 .read = stats_ ##name## _read, \
348 .open = mac80211_open_file_generic, \
351 #define DEBUGFS_STATS_ADD(name, field) \
352 debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
353 #define DEBUGFS_DEVSTATS_ADD(name) \
354 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
356 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
357 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
358 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
359 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
361 void debugfs_hw_add(struct ieee80211_local *local)
363 struct dentry *phyd = local->hw.wiphy->debugfsdir;
364 struct dentry *statsd;
369 local->debugfs.stations = debugfs_create_dir("stations", phyd);
370 local->debugfs.keys = debugfs_create_dir("keys", phyd);
372 DEBUGFS_ADD(frequency);
373 DEBUGFS_ADD(total_ps_buffered);
377 DEBUGFS_ADD_MODE(reset, 0200);
379 DEBUGFS_ADD(uapsd_queues);
380 DEBUGFS_ADD(uapsd_max_sp_len);
381 DEBUGFS_ADD(channel_type);
383 statsd = debugfs_create_dir("statistics", phyd);
385 /* if the dir failed, don't put all the other things into the root! */
389 DEBUGFS_STATS_ADD(transmitted_fragment_count,
390 local->dot11TransmittedFragmentCount);
391 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
392 local->dot11MulticastTransmittedFrameCount);
393 DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
394 DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
395 DEBUGFS_STATS_ADD(multiple_retry_count,
396 local->dot11MultipleRetryCount);
397 DEBUGFS_STATS_ADD(frame_duplicate_count,
398 local->dot11FrameDuplicateCount);
399 DEBUGFS_STATS_ADD(received_fragment_count,
400 local->dot11ReceivedFragmentCount);
401 DEBUGFS_STATS_ADD(multicast_received_frame_count,
402 local->dot11MulticastReceivedFrameCount);
403 DEBUGFS_STATS_ADD(transmitted_frame_count,
404 local->dot11TransmittedFrameCount);
405 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
406 DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
407 DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
408 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
409 local->tx_handlers_drop_unencrypted);
410 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
411 local->tx_handlers_drop_fragment);
412 DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
413 local->tx_handlers_drop_wep);
414 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
415 local->tx_handlers_drop_not_assoc);
416 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
417 local->tx_handlers_drop_unauth_port);
418 DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
419 DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
420 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
421 local->rx_handlers_drop_nullfunc);
422 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
423 local->rx_handlers_drop_defrag);
424 DEBUGFS_STATS_ADD(rx_handlers_drop_short,
425 local->rx_handlers_drop_short);
426 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
427 local->rx_handlers_drop_passive_scan);
428 DEBUGFS_STATS_ADD(tx_expand_skb_head,
429 local->tx_expand_skb_head);
430 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
431 local->tx_expand_skb_head_cloned);
432 DEBUGFS_STATS_ADD(rx_expand_skb_head,
433 local->rx_expand_skb_head);
434 DEBUGFS_STATS_ADD(rx_expand_skb_head2,
435 local->rx_expand_skb_head2);
436 DEBUGFS_STATS_ADD(rx_handlers_fragments,
437 local->rx_handlers_fragments);
438 DEBUGFS_STATS_ADD(tx_status_drop,
439 local->tx_status_drop);
441 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
442 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
443 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
444 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);