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
tsf_read(struct file
*file
, char __user
*user_buf
,
82 size_t count
, loff_t
*ppos
)
84 struct ieee80211_local
*local
= file
->private_data
;
87 tsf
= drv_get_tsf(local
);
89 return mac80211_format_buffer(user_buf
, count
, ppos
, "0x%016llx\n",
90 (unsigned long long) tsf
);
93 static ssize_t
tsf_write(struct file
*file
,
94 const char __user
*user_buf
,
95 size_t count
, loff_t
*ppos
)
97 struct ieee80211_local
*local
= file
->private_data
;
98 unsigned long long tsf
;
102 len
= min(count
, sizeof(buf
) - 1);
103 if (copy_from_user(buf
, user_buf
, len
))
107 if (strncmp(buf
, "reset", 5) == 0) {
108 if (local
->ops
->reset_tsf
) {
109 drv_reset_tsf(local
);
110 wiphy_info(local
->hw
.wiphy
, "debugfs reset TSF\n");
113 tsf
= simple_strtoul(buf
, NULL
, 0);
114 if (local
->ops
->set_tsf
) {
115 drv_set_tsf(local
, tsf
);
116 wiphy_info(local
->hw
.wiphy
,
117 "debugfs set TSF to %#018llx\n", tsf
);
125 static const struct file_operations tsf_ops
= {
128 .open
= mac80211_open_file_generic
,
129 .llseek
= default_llseek
,
132 static ssize_t
reset_write(struct file
*file
, const char __user
*user_buf
,
133 size_t count
, loff_t
*ppos
)
135 struct ieee80211_local
*local
= file
->private_data
;
138 __ieee80211_suspend(&local
->hw
, NULL
);
139 __ieee80211_resume(&local
->hw
);
145 static const struct file_operations reset_ops
= {
146 .write
= reset_write
,
147 .open
= mac80211_open_file_generic
,
148 .llseek
= noop_llseek
,
151 static ssize_t
noack_read(struct file
*file
, char __user
*user_buf
,
152 size_t count
, loff_t
*ppos
)
154 struct ieee80211_local
*local
= file
->private_data
;
156 return mac80211_format_buffer(user_buf
, count
, ppos
, "%d\n",
157 local
->wifi_wme_noack_test
);
160 static ssize_t
noack_write(struct file
*file
,
161 const char __user
*user_buf
,
162 size_t count
, loff_t
*ppos
)
164 struct ieee80211_local
*local
= file
->private_data
;
168 len
= min(count
, sizeof(buf
) - 1);
169 if (copy_from_user(buf
, user_buf
, len
))
173 local
->wifi_wme_noack_test
= !!simple_strtoul(buf
, NULL
, 0);
178 static const struct file_operations noack_ops
= {
180 .write
= noack_write
,
181 .open
= mac80211_open_file_generic
,
182 .llseek
= default_llseek
,
185 static ssize_t
uapsd_queues_read(struct file
*file
, char __user
*user_buf
,
186 size_t count
, loff_t
*ppos
)
188 struct ieee80211_local
*local
= file
->private_data
;
189 return mac80211_format_buffer(user_buf
, count
, ppos
, "0x%x\n",
190 local
->uapsd_queues
);
193 static ssize_t
uapsd_queues_write(struct file
*file
,
194 const char __user
*user_buf
,
195 size_t count
, loff_t
*ppos
)
197 struct ieee80211_local
*local
= file
->private_data
;
201 ret
= kstrtou8_from_user(user_buf
, count
, 0, &val
);
205 if (val
& ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK
)
208 local
->uapsd_queues
= val
;
213 static const struct file_operations uapsd_queues_ops
= {
214 .read
= uapsd_queues_read
,
215 .write
= uapsd_queues_write
,
216 .open
= mac80211_open_file_generic
,
217 .llseek
= default_llseek
,
220 static ssize_t
uapsd_max_sp_len_read(struct file
*file
, char __user
*user_buf
,
221 size_t count
, loff_t
*ppos
)
223 struct ieee80211_local
*local
= file
->private_data
;
225 return mac80211_format_buffer(user_buf
, count
, ppos
, "0x%x\n",
226 local
->uapsd_max_sp_len
);
229 static ssize_t
uapsd_max_sp_len_write(struct file
*file
,
230 const char __user
*user_buf
,
231 size_t count
, loff_t
*ppos
)
233 struct ieee80211_local
*local
= file
->private_data
;
239 len
= min(count
, sizeof(buf
) - 1);
240 if (copy_from_user(buf
, user_buf
, len
))
244 ret
= strict_strtoul(buf
, 0, &val
);
249 if (val
& ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK
)
252 local
->uapsd_max_sp_len
= val
;
257 static const struct file_operations uapsd_max_sp_len_ops
= {
258 .read
= uapsd_max_sp_len_read
,
259 .write
= uapsd_max_sp_len_write
,
260 .open
= mac80211_open_file_generic
,
261 .llseek
= default_llseek
,
264 static ssize_t
channel_type_read(struct file
*file
, char __user
*user_buf
,
265 size_t count
, loff_t
*ppos
)
267 struct ieee80211_local
*local
= file
->private_data
;
270 switch (local
->hw
.conf
.channel_type
) {
271 case NL80211_CHAN_NO_HT
:
274 case NL80211_CHAN_HT20
:
277 case NL80211_CHAN_HT40MINUS
:
280 case NL80211_CHAN_HT40PLUS
:
288 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, strlen(buf
));
291 static ssize_t
hwflags_read(struct file
*file
, char __user
*user_buf
,
292 size_t count
, loff_t
*ppos
)
294 struct ieee80211_local
*local
= file
->private_data
;
297 char *buf
= kzalloc(mxln
, GFP_KERNEL
);
298 int sf
= 0; /* how many written so far */
300 sf
+= snprintf(buf
, mxln
- sf
, "0x%x\n", local
->hw
.flags
);
301 if (local
->hw
.flags
& IEEE80211_HW_HAS_RATE_CONTROL
)
302 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "HAS_RATE_CONTROL\n");
303 if (local
->hw
.flags
& IEEE80211_HW_RX_INCLUDES_FCS
)
304 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "RX_INCLUDES_FCS\n");
305 if (local
->hw
.flags
& IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING
)
306 sf
+= snprintf(buf
+ sf
, mxln
- sf
,
307 "HOST_BCAST_PS_BUFFERING\n");
308 if (local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
)
309 sf
+= snprintf(buf
+ sf
, mxln
- sf
,
310 "2GHZ_SHORT_SLOT_INCAPABLE\n");
311 if (local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
)
312 sf
+= snprintf(buf
+ sf
, mxln
- sf
,
313 "2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
314 if (local
->hw
.flags
& IEEE80211_HW_SIGNAL_UNSPEC
)
315 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SIGNAL_UNSPEC\n");
316 if (local
->hw
.flags
& IEEE80211_HW_SIGNAL_DBM
)
317 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SIGNAL_DBM\n");
318 if (local
->hw
.flags
& IEEE80211_HW_NEED_DTIM_PERIOD
)
319 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "NEED_DTIM_PERIOD\n");
320 if (local
->hw
.flags
& IEEE80211_HW_SPECTRUM_MGMT
)
321 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SPECTRUM_MGMT\n");
322 if (local
->hw
.flags
& IEEE80211_HW_AMPDU_AGGREGATION
)
323 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "AMPDU_AGGREGATION\n");
324 if (local
->hw
.flags
& IEEE80211_HW_SUPPORTS_PS
)
325 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SUPPORTS_PS\n");
326 if (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
)
327 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "PS_NULLFUNC_STACK\n");
328 if (local
->hw
.flags
& IEEE80211_HW_SUPPORTS_DYNAMIC_PS
)
329 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SUPPORTS_DYNAMIC_PS\n");
330 if (local
->hw
.flags
& IEEE80211_HW_MFP_CAPABLE
)
331 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "MFP_CAPABLE\n");
332 if (local
->hw
.flags
& IEEE80211_HW_BEACON_FILTER
)
333 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "BEACON_FILTER\n");
334 if (local
->hw
.flags
& IEEE80211_HW_SUPPORTS_STATIC_SMPS
)
335 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SUPPORTS_STATIC_SMPS\n");
336 if (local
->hw
.flags
& IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
)
337 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SUPPORTS_DYNAMIC_SMPS\n");
338 if (local
->hw
.flags
& IEEE80211_HW_SUPPORTS_UAPSD
)
339 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SUPPORTS_UAPSD\n");
340 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
341 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "REPORTS_TX_ACK_STATUS\n");
342 if (local
->hw
.flags
& IEEE80211_HW_CONNECTION_MONITOR
)
343 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "CONNECTION_MONITOR\n");
344 if (local
->hw
.flags
& IEEE80211_HW_SUPPORTS_CQM_RSSI
)
345 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SUPPORTS_CQM_RSSI\n");
346 if (local
->hw
.flags
& IEEE80211_HW_SUPPORTS_PER_STA_GTK
)
347 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "SUPPORTS_PER_STA_GTK\n");
348 if (local
->hw
.flags
& IEEE80211_HW_AP_LINK_PS
)
349 sf
+= snprintf(buf
+ sf
, mxln
- sf
, "AP_LINK_PS\n");
351 rv
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, strlen(buf
));
356 static ssize_t
queues_read(struct file
*file
, char __user
*user_buf
,
357 size_t count
, loff_t
*ppos
)
359 struct ieee80211_local
*local
= file
->private_data
;
361 char buf
[IEEE80211_MAX_QUEUES
* 20];
364 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
365 for (q
= 0; q
< local
->hw
.queues
; q
++)
366 res
+= sprintf(buf
+ res
, "%02d: %#.8lx/%d\n", q
,
367 local
->queue_stop_reasons
[q
],
368 skb_queue_len(&local
->pending
[q
]));
369 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
371 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, res
);
374 DEBUGFS_READONLY_FILE_OPS(hwflags
);
375 DEBUGFS_READONLY_FILE_OPS(channel_type
);
376 DEBUGFS_READONLY_FILE_OPS(queues
);
378 /* statistics stuff */
380 static ssize_t
format_devstat_counter(struct ieee80211_local
*local
,
381 char __user
*userbuf
,
382 size_t count
, loff_t
*ppos
,
383 int (*printvalue
)(struct ieee80211_low_level_stats
*stats
, char *buf
,
386 struct ieee80211_low_level_stats stats
;
391 res
= drv_get_stats(local
, &stats
);
395 res
= printvalue(&stats
, buf
, sizeof(buf
));
396 return simple_read_from_buffer(userbuf
, count
, ppos
, buf
, res
);
399 #define DEBUGFS_DEVSTATS_FILE(name) \
400 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
401 char *buf, int buflen) \
403 return scnprintf(buf, buflen, "%u\n", stats->name); \
405 static ssize_t stats_ ##name## _read(struct file *file, \
406 char __user *userbuf, \
407 size_t count, loff_t *ppos) \
409 return format_devstat_counter(file->private_data, \
413 print_devstats_##name); \
416 static const struct file_operations stats_ ##name## _ops = { \
417 .read = stats_ ##name## _read, \
418 .open = mac80211_open_file_generic, \
419 .llseek = generic_file_llseek, \
422 #define DEBUGFS_STATS_ADD(name, field) \
423 debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
424 #define DEBUGFS_DEVSTATS_ADD(name) \
425 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
427 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount
);
428 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount
);
429 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount
);
430 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount
);
432 void debugfs_hw_add(struct ieee80211_local
*local
)
434 struct dentry
*phyd
= local
->hw
.wiphy
->debugfsdir
;
435 struct dentry
*statsd
;
440 local
->debugfs
.keys
= debugfs_create_dir("keys", phyd
);
442 DEBUGFS_ADD(frequency
);
443 DEBUGFS_ADD(total_ps_buffered
);
447 DEBUGFS_ADD_MODE(reset
, 0200);
449 DEBUGFS_ADD(uapsd_queues
);
450 DEBUGFS_ADD(uapsd_max_sp_len
);
451 DEBUGFS_ADD(channel_type
);
452 DEBUGFS_ADD(hwflags
);
453 DEBUGFS_ADD(user_power
);
456 statsd
= debugfs_create_dir("statistics", phyd
);
458 /* if the dir failed, don't put all the other things into the root! */
462 DEBUGFS_STATS_ADD(transmitted_fragment_count
,
463 local
->dot11TransmittedFragmentCount
);
464 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count
,
465 local
->dot11MulticastTransmittedFrameCount
);
466 DEBUGFS_STATS_ADD(failed_count
, local
->dot11FailedCount
);
467 DEBUGFS_STATS_ADD(retry_count
, local
->dot11RetryCount
);
468 DEBUGFS_STATS_ADD(multiple_retry_count
,
469 local
->dot11MultipleRetryCount
);
470 DEBUGFS_STATS_ADD(frame_duplicate_count
,
471 local
->dot11FrameDuplicateCount
);
472 DEBUGFS_STATS_ADD(received_fragment_count
,
473 local
->dot11ReceivedFragmentCount
);
474 DEBUGFS_STATS_ADD(multicast_received_frame_count
,
475 local
->dot11MulticastReceivedFrameCount
);
476 DEBUGFS_STATS_ADD(transmitted_frame_count
,
477 local
->dot11TransmittedFrameCount
);
478 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
479 DEBUGFS_STATS_ADD(tx_handlers_drop
, local
->tx_handlers_drop
);
480 DEBUGFS_STATS_ADD(tx_handlers_queued
, local
->tx_handlers_queued
);
481 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted
,
482 local
->tx_handlers_drop_unencrypted
);
483 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment
,
484 local
->tx_handlers_drop_fragment
);
485 DEBUGFS_STATS_ADD(tx_handlers_drop_wep
,
486 local
->tx_handlers_drop_wep
);
487 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc
,
488 local
->tx_handlers_drop_not_assoc
);
489 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port
,
490 local
->tx_handlers_drop_unauth_port
);
491 DEBUGFS_STATS_ADD(rx_handlers_drop
, local
->rx_handlers_drop
);
492 DEBUGFS_STATS_ADD(rx_handlers_queued
, local
->rx_handlers_queued
);
493 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc
,
494 local
->rx_handlers_drop_nullfunc
);
495 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag
,
496 local
->rx_handlers_drop_defrag
);
497 DEBUGFS_STATS_ADD(rx_handlers_drop_short
,
498 local
->rx_handlers_drop_short
);
499 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan
,
500 local
->rx_handlers_drop_passive_scan
);
501 DEBUGFS_STATS_ADD(tx_expand_skb_head
,
502 local
->tx_expand_skb_head
);
503 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned
,
504 local
->tx_expand_skb_head_cloned
);
505 DEBUGFS_STATS_ADD(rx_expand_skb_head
,
506 local
->rx_expand_skb_head
);
507 DEBUGFS_STATS_ADD(rx_expand_skb_head2
,
508 local
->rx_expand_skb_head2
);
509 DEBUGFS_STATS_ADD(rx_handlers_fragments
,
510 local
->rx_handlers_fragments
);
511 DEBUGFS_STATS_ADD(tx_status_drop
,
512 local
->tx_status_drop
);
514 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount
);
515 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount
);
516 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount
);
517 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount
);