Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * mac80211 debugfs for wireless PHYs
3 *
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * GPLv2
7 *
8 */
9
10#include <linux/debugfs.h>
11#include <linux/rtnetlink.h>
12#include "ieee80211_i.h"
13#include "rate.h"
14#include "debugfs.h"
15
16int mac80211_open_file_generic(struct inode *inode, struct file *file)
17{
18 file->private_data = inode->i_private;
19 return 0;
20}
21
22#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
23static ssize_t name## _read(struct file *file, char __user *userbuf, \
24 size_t count, loff_t *ppos) \
25{ \
26 struct ieee80211_local *local = file->private_data; \
27 char buf[buflen]; \
28 int res; \
29 \
30 res = scnprintf(buf, buflen, fmt "\n", ##value); \
31 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
32} \
33 \
34static const struct file_operations name## _ops = { \
35 .read = name## _read, \
36 .open = mac80211_open_file_generic, \
37};
38
39#define DEBUGFS_ADD(name) \
40 local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \
41 local, &name## _ops);
42
43#define DEBUGFS_DEL(name) \
44 debugfs_remove(local->debugfs.name); \
45 local->debugfs.name = NULL;
46
47
48DEBUGFS_READONLY_FILE(frequency, 20, "%d",
49 local->hw.conf.channel->center_freq);
50DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
51 local->rts_threshold);
52DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
53 local->fragmentation_threshold);
54DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
55 local->hw.conf.short_frame_max_tx_count);
56DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
57 local->hw.conf.long_frame_max_tx_count);
58DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
59 local->total_ps_buffered);
60DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x",
61 local->wep_iv & 0xffffff);
62DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
63 local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>");
64
65/* statistics stuff */
66
67#define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
68 DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
69
70static ssize_t format_devstat_counter(struct ieee80211_local *local,
71 char __user *userbuf,
72 size_t count, loff_t *ppos,
73 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
74 int buflen))
75{
76 struct ieee80211_low_level_stats stats;
77 char buf[20];
78 int res;
79
80 if (!local->ops->get_stats)
81 return -EOPNOTSUPP;
82
83 rtnl_lock();
84 res = local->ops->get_stats(local_to_hw(local), &stats);
85 rtnl_unlock();
86 if (!res)
87 res = printvalue(&stats, buf, sizeof(buf));
88 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
89}
90
91#define DEBUGFS_DEVSTATS_FILE(name) \
92static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
93 char *buf, int buflen) \
94{ \
95 return scnprintf(buf, buflen, "%u\n", stats->name); \
96} \
97static ssize_t stats_ ##name## _read(struct file *file, \
98 char __user *userbuf, \
99 size_t count, loff_t *ppos) \
100{ \
101 return format_devstat_counter(file->private_data, \
102 userbuf, \
103 count, \
104 ppos, \
105 print_devstats_##name); \
106} \
107 \
108static const struct file_operations stats_ ##name## _ops = { \
109 .read = stats_ ##name## _read, \
110 .open = mac80211_open_file_generic, \
111};
112
113#define DEBUGFS_STATS_ADD(name) \
114 local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\
115 local, &stats_ ##name## _ops);
116
117#define DEBUGFS_STATS_DEL(name) \
118 debugfs_remove(local->debugfs.stats.name); \
119 local->debugfs.stats.name = NULL;
120
121DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
122 local->dot11TransmittedFragmentCount);
123DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
124 local->dot11MulticastTransmittedFrameCount);
125DEBUGFS_STATS_FILE(failed_count, 20, "%u",
126 local->dot11FailedCount);
127DEBUGFS_STATS_FILE(retry_count, 20, "%u",
128 local->dot11RetryCount);
129DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
130 local->dot11MultipleRetryCount);
131DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
132 local->dot11FrameDuplicateCount);
133DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
134 local->dot11ReceivedFragmentCount);
135DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
136 local->dot11MulticastReceivedFrameCount);
137DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
138 local->dot11TransmittedFrameCount);
139DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u",
140 local->dot11WEPUndecryptableCount);
141#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
142DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
143 local->tx_handlers_drop);
144DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
145 local->tx_handlers_queued);
146DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
147 local->tx_handlers_drop_unencrypted);
148DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
149 local->tx_handlers_drop_fragment);
150DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
151 local->tx_handlers_drop_wep);
152DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
153 local->tx_handlers_drop_not_assoc);
154DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
155 local->tx_handlers_drop_unauth_port);
156DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
157 local->rx_handlers_drop);
158DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
159 local->rx_handlers_queued);
160DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
161 local->rx_handlers_drop_nullfunc);
162DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
163 local->rx_handlers_drop_defrag);
164DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
165 local->rx_handlers_drop_short);
166DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
167 local->rx_handlers_drop_passive_scan);
168DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
169 local->tx_expand_skb_head);
170DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
171 local->tx_expand_skb_head_cloned);
172DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
173 local->rx_expand_skb_head);
174DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
175 local->rx_expand_skb_head2);
176DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
177 local->rx_handlers_fragments);
178DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
179 local->tx_status_drop);
180
181#endif
182
183DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
184DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
185DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
186DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
187
188
189void debugfs_hw_add(struct ieee80211_local *local)
190{
191 struct dentry *phyd = local->hw.wiphy->debugfsdir;
192 struct dentry *statsd;
193
194 if (!phyd)
195 return;
196
197 local->debugfs.stations = debugfs_create_dir("stations", phyd);
198 local->debugfs.keys = debugfs_create_dir("keys", phyd);
199
200 DEBUGFS_ADD(frequency);
201 DEBUGFS_ADD(rts_threshold);
202 DEBUGFS_ADD(fragmentation_threshold);
203 DEBUGFS_ADD(short_retry_limit);
204 DEBUGFS_ADD(long_retry_limit);
205 DEBUGFS_ADD(total_ps_buffered);
206 DEBUGFS_ADD(wep_iv);
207
208 statsd = debugfs_create_dir("statistics", phyd);
209 local->debugfs.statistics = statsd;
210
211 /* if the dir failed, don't put all the other things into the root! */
212 if (!statsd)
213 return;
214
215 DEBUGFS_STATS_ADD(transmitted_fragment_count);
216 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
217 DEBUGFS_STATS_ADD(failed_count);
218 DEBUGFS_STATS_ADD(retry_count);
219 DEBUGFS_STATS_ADD(multiple_retry_count);
220 DEBUGFS_STATS_ADD(frame_duplicate_count);
221 DEBUGFS_STATS_ADD(received_fragment_count);
222 DEBUGFS_STATS_ADD(multicast_received_frame_count);
223 DEBUGFS_STATS_ADD(transmitted_frame_count);
224 DEBUGFS_STATS_ADD(wep_undecryptable_count);
225#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
226 DEBUGFS_STATS_ADD(tx_handlers_drop);
227 DEBUGFS_STATS_ADD(tx_handlers_queued);
228 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
229 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
230 DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
231 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
232 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
233 DEBUGFS_STATS_ADD(rx_handlers_drop);
234 DEBUGFS_STATS_ADD(rx_handlers_queued);
235 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
236 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
237 DEBUGFS_STATS_ADD(rx_handlers_drop_short);
238 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
239 DEBUGFS_STATS_ADD(tx_expand_skb_head);
240 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
241 DEBUGFS_STATS_ADD(rx_expand_skb_head);
242 DEBUGFS_STATS_ADD(rx_expand_skb_head2);
243 DEBUGFS_STATS_ADD(rx_handlers_fragments);
244 DEBUGFS_STATS_ADD(tx_status_drop);
245#endif
246 DEBUGFS_STATS_ADD(dot11ACKFailureCount);
247 DEBUGFS_STATS_ADD(dot11RTSFailureCount);
248 DEBUGFS_STATS_ADD(dot11FCSErrorCount);
249 DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
250}
251
252void debugfs_hw_del(struct ieee80211_local *local)
253{
254 DEBUGFS_DEL(frequency);
255 DEBUGFS_DEL(rts_threshold);
256 DEBUGFS_DEL(fragmentation_threshold);
257 DEBUGFS_DEL(short_retry_limit);
258 DEBUGFS_DEL(long_retry_limit);
259 DEBUGFS_DEL(total_ps_buffered);
260 DEBUGFS_DEL(wep_iv);
261
262 DEBUGFS_STATS_DEL(transmitted_fragment_count);
263 DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
264 DEBUGFS_STATS_DEL(failed_count);
265 DEBUGFS_STATS_DEL(retry_count);
266 DEBUGFS_STATS_DEL(multiple_retry_count);
267 DEBUGFS_STATS_DEL(frame_duplicate_count);
268 DEBUGFS_STATS_DEL(received_fragment_count);
269 DEBUGFS_STATS_DEL(multicast_received_frame_count);
270 DEBUGFS_STATS_DEL(transmitted_frame_count);
271 DEBUGFS_STATS_DEL(wep_undecryptable_count);
272 DEBUGFS_STATS_DEL(num_scans);
273#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
274 DEBUGFS_STATS_DEL(tx_handlers_drop);
275 DEBUGFS_STATS_DEL(tx_handlers_queued);
276 DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted);
277 DEBUGFS_STATS_DEL(tx_handlers_drop_fragment);
278 DEBUGFS_STATS_DEL(tx_handlers_drop_wep);
279 DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc);
280 DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port);
281 DEBUGFS_STATS_DEL(rx_handlers_drop);
282 DEBUGFS_STATS_DEL(rx_handlers_queued);
283 DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc);
284 DEBUGFS_STATS_DEL(rx_handlers_drop_defrag);
285 DEBUGFS_STATS_DEL(rx_handlers_drop_short);
286 DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan);
287 DEBUGFS_STATS_DEL(tx_expand_skb_head);
288 DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned);
289 DEBUGFS_STATS_DEL(rx_expand_skb_head);
290 DEBUGFS_STATS_DEL(rx_expand_skb_head2);
291 DEBUGFS_STATS_DEL(rx_handlers_fragments);
292 DEBUGFS_STATS_DEL(tx_status_drop);
293#endif
294 DEBUGFS_STATS_DEL(dot11ACKFailureCount);
295 DEBUGFS_STATS_DEL(dot11RTSFailureCount);
296 DEBUGFS_STATS_DEL(dot11FCSErrorCount);
297 DEBUGFS_STATS_DEL(dot11RTSSuccessCount);
298
299 debugfs_remove(local->debugfs.statistics);
300 local->debugfs.statistics = NULL;
301 debugfs_remove(local->debugfs.stations);
302 local->debugfs.stations = NULL;
303 debugfs_remove(local->debugfs.keys);
304 local->debugfs.keys = NULL;
305}