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_FORMAT_BUFFER_SIZE 100
26 int mac80211_format_buffer(char __user *userbuf, size_t count,
27 loff_t *ppos, char *fmt, ...)
30 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
34 res = vscnprintf(buf, sizeof(buf), fmt, args);
37 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
40 #define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
41 static ssize_t name## _read(struct file *file, char __user *userbuf, \
42 size_t count, loff_t *ppos) \
44 struct ieee80211_local *local = file->private_data; \
46 return mac80211_format_buffer(userbuf, count, ppos, \
50 #define DEBUGFS_READONLY_FILE_OPS(name) \
51 static const struct file_operations name## _ops = { \
52 .read = name## _read, \
53 .open = mac80211_open_file_generic, \
54 .llseek = generic_file_llseek, \
57 #define DEBUGFS_READONLY_FILE(name, fmt, value...) \
58 DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
59 DEBUGFS_READONLY_FILE_OPS(name)
61 #define DEBUGFS_ADD(name) \
62 debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
64 #define DEBUGFS_ADD_MODE(name, mode) \
65 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
68 DEBUGFS_READONLY_FILE(user_power, "%d",
69 local->user_power_level);
70 DEBUGFS_READONLY_FILE(power, "%d",
71 local->hw.conf.power_level);
72 DEBUGFS_READONLY_FILE(frequency, "%d",
73 local->hw.conf.channel->center_freq);
74 DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
75 local->total_ps_buffered);
76 DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
77 local->wep_iv & 0xffffff);
78 DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
79 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
81 static ssize_t reset_write(struct file *file, const char __user *user_buf,
82 size_t count, loff_t *ppos)
84 struct ieee80211_local *local = file->private_data;
87 __ieee80211_suspend(&local->hw, NULL);
88 __ieee80211_resume(&local->hw);
94 static const struct file_operations reset_ops = {
96 .open = mac80211_open_file_generic,
97 .llseek = noop_llseek,
100 static ssize_t noack_read(struct file *file, char __user *user_buf,
101 size_t count, loff_t *ppos)
103 struct ieee80211_local *local = file->private_data;
105 return mac80211_format_buffer(user_buf, count, ppos, "%d\n",
106 local->wifi_wme_noack_test);
109 static ssize_t noack_write(struct file *file,
110 const char __user *user_buf,
111 size_t count, loff_t *ppos)
113 struct ieee80211_local *local = file->private_data;
117 len = min(count, sizeof(buf) - 1);
118 if (copy_from_user(buf, user_buf, len))
122 local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
127 static const struct file_operations noack_ops = {
129 .write = noack_write,
130 .open = mac80211_open_file_generic,
131 .llseek = default_llseek,
134 static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf,
135 size_t count, loff_t *ppos)
137 struct ieee80211_local *local = file->private_data;
138 return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
139 local->uapsd_queues);
142 static ssize_t uapsd_queues_write(struct file *file,
143 const char __user *user_buf,
144 size_t count, loff_t *ppos)
146 struct ieee80211_local *local = file->private_data;
150 ret = kstrtou8_from_user(user_buf, count, 0, &val);
154 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
157 local->uapsd_queues = val;
162 static const struct file_operations uapsd_queues_ops = {
163 .read = uapsd_queues_read,
164 .write = uapsd_queues_write,
165 .open = mac80211_open_file_generic,
166 .llseek = default_llseek,
169 static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf,
170 size_t count, loff_t *ppos)
172 struct ieee80211_local *local = file->private_data;
174 return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
175 local->uapsd_max_sp_len);
178 static ssize_t uapsd_max_sp_len_write(struct file *file,
179 const char __user *user_buf,
180 size_t count, loff_t *ppos)
182 struct ieee80211_local *local = file->private_data;
188 len = min(count, sizeof(buf) - 1);
189 if (copy_from_user(buf, user_buf, len))
193 ret = strict_strtoul(buf, 0, &val);
198 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
201 local->uapsd_max_sp_len = val;
206 static const struct file_operations uapsd_max_sp_len_ops = {
207 .read = uapsd_max_sp_len_read,
208 .write = uapsd_max_sp_len_write,
209 .open = mac80211_open_file_generic,
210 .llseek = default_llseek,
213 static ssize_t channel_type_read(struct file *file, char __user *user_buf,
214 size_t count, loff_t *ppos)
216 struct ieee80211_local *local = file->private_data;
219 switch (local->hw.conf.channel_type) {
220 case NL80211_CHAN_NO_HT:
223 case NL80211_CHAN_HT20:
226 case NL80211_CHAN_HT40MINUS:
229 case NL80211_CHAN_HT40PLUS:
237 return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
240 static ssize_t hwflags_read(struct file *file, char __user *user_buf,
241 size_t count, loff_t *ppos)
243 struct ieee80211_local *local = file->private_data;
246 char *buf = kzalloc(mxln, GFP_KERNEL);
247 int sf = 0; /* how many written so far */
252 sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
253 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
254 sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
255 if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
256 sf += snprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n");
257 if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)
258 sf += snprintf(buf + sf, mxln - sf,
259 "HOST_BCAST_PS_BUFFERING\n");
260 if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)
261 sf += snprintf(buf + sf, mxln - sf,
262 "2GHZ_SHORT_SLOT_INCAPABLE\n");
263 if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)
264 sf += snprintf(buf + sf, mxln - sf,
265 "2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
266 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
267 sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
268 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
269 sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
270 if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
271 sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_PERIOD\n");
272 if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
273 sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
274 if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
275 sf += snprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n");
276 if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS)
277 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n");
278 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
279 sf += snprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n");
280 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
281 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n");
282 if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE)
283 sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n");
284 if (local->hw.flags & IEEE80211_HW_BEACON_FILTER)
285 sf += snprintf(buf + sf, mxln - sf, "BEACON_FILTER\n");
286 if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS)
287 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n");
288 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
289 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_SMPS\n");
290 if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
291 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n");
292 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
293 sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS\n");
294 if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
295 sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n");
296 if (local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)
297 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_CQM_RSSI\n");
298 if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)
299 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
300 if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
301 sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
302 if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)
303 sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n");
305 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
310 static ssize_t queues_read(struct file *file, char __user *user_buf,
311 size_t count, loff_t *ppos)
313 struct ieee80211_local *local = file->private_data;
315 char buf[IEEE80211_MAX_QUEUES * 20];
318 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
319 for (q = 0; q < local->hw.queues; q++)
320 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
321 local->queue_stop_reasons[q],
322 skb_queue_len(&local->pending[q]));
323 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
325 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
328 DEBUGFS_READONLY_FILE_OPS(hwflags);
329 DEBUGFS_READONLY_FILE_OPS(channel_type);
330 DEBUGFS_READONLY_FILE_OPS(queues);
332 /* statistics stuff */
334 static ssize_t format_devstat_counter(struct ieee80211_local *local,
335 char __user *userbuf,
336 size_t count, loff_t *ppos,
337 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
340 struct ieee80211_low_level_stats stats;
345 res = drv_get_stats(local, &stats);
349 res = printvalue(&stats, buf, sizeof(buf));
350 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
353 #define DEBUGFS_DEVSTATS_FILE(name) \
354 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
355 char *buf, int buflen) \
357 return scnprintf(buf, buflen, "%u\n", stats->name); \
359 static ssize_t stats_ ##name## _read(struct file *file, \
360 char __user *userbuf, \
361 size_t count, loff_t *ppos) \
363 return format_devstat_counter(file->private_data, \
367 print_devstats_##name); \
370 static const struct file_operations stats_ ##name## _ops = { \
371 .read = stats_ ##name## _read, \
372 .open = mac80211_open_file_generic, \
373 .llseek = generic_file_llseek, \
376 #define DEBUGFS_STATS_ADD(name, field) \
377 debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
378 #define DEBUGFS_DEVSTATS_ADD(name) \
379 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
381 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
382 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
383 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
384 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
386 void debugfs_hw_add(struct ieee80211_local *local)
388 struct dentry *phyd = local->hw.wiphy->debugfsdir;
389 struct dentry *statsd;
394 local->debugfs.keys = debugfs_create_dir("keys", phyd);
396 DEBUGFS_ADD(frequency);
397 DEBUGFS_ADD(total_ps_buffered);
400 DEBUGFS_ADD_MODE(reset, 0200);
402 DEBUGFS_ADD(uapsd_queues);
403 DEBUGFS_ADD(uapsd_max_sp_len);
404 DEBUGFS_ADD(channel_type);
405 DEBUGFS_ADD(hwflags);
406 DEBUGFS_ADD(user_power);
409 statsd = debugfs_create_dir("statistics", phyd);
411 /* if the dir failed, don't put all the other things into the root! */
415 DEBUGFS_STATS_ADD(transmitted_fragment_count,
416 local->dot11TransmittedFragmentCount);
417 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
418 local->dot11MulticastTransmittedFrameCount);
419 DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
420 DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
421 DEBUGFS_STATS_ADD(multiple_retry_count,
422 local->dot11MultipleRetryCount);
423 DEBUGFS_STATS_ADD(frame_duplicate_count,
424 local->dot11FrameDuplicateCount);
425 DEBUGFS_STATS_ADD(received_fragment_count,
426 local->dot11ReceivedFragmentCount);
427 DEBUGFS_STATS_ADD(multicast_received_frame_count,
428 local->dot11MulticastReceivedFrameCount);
429 DEBUGFS_STATS_ADD(transmitted_frame_count,
430 local->dot11TransmittedFrameCount);
431 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
432 DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
433 DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
434 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
435 local->tx_handlers_drop_unencrypted);
436 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
437 local->tx_handlers_drop_fragment);
438 DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
439 local->tx_handlers_drop_wep);
440 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
441 local->tx_handlers_drop_not_assoc);
442 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
443 local->tx_handlers_drop_unauth_port);
444 DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
445 DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
446 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
447 local->rx_handlers_drop_nullfunc);
448 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
449 local->rx_handlers_drop_defrag);
450 DEBUGFS_STATS_ADD(rx_handlers_drop_short,
451 local->rx_handlers_drop_short);
452 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
453 local->rx_handlers_drop_passive_scan);
454 DEBUGFS_STATS_ADD(tx_expand_skb_head,
455 local->tx_expand_skb_head);
456 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
457 local->tx_expand_skb_head_cloned);
458 DEBUGFS_STATS_ADD(rx_expand_skb_head,
459 local->rx_expand_skb_head);
460 DEBUGFS_STATS_ADD(rx_expand_skb_head2,
461 local->rx_expand_skb_head2);
462 DEBUGFS_STATS_ADD(rx_handlers_fragments,
463 local->rx_handlers_fragments);
464 DEBUGFS_STATS_ADD(tx_status_drop,
465 local->tx_status_drop);
467 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
468 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
469 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
470 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);