Merge branch 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32
[linux-2.6] / net / mac80211 / debugfs.c
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 "ieee80211_rate.h"
14 #include "debugfs.h"
15
16 int mac80211_open_file_generic(struct inode *inode, struct file *file)
17 {
18         file->private_data = inode->i_private;
19         return 0;
20 }
21
22 static const char *ieee80211_mode_str(int mode)
23 {
24         switch (mode) {
25         case MODE_IEEE80211A:
26                 return "IEEE 802.11a";
27         case MODE_IEEE80211B:
28                 return "IEEE 802.11b";
29         case MODE_IEEE80211G:
30                 return "IEEE 802.11g";
31         case MODE_ATHEROS_TURBO:
32                 return "Atheros Turbo (5 GHz)";
33         default:
34                 return "UNKNOWN";
35         }
36 }
37
38 static ssize_t modes_read(struct file *file, char __user *userbuf,
39                           size_t count, loff_t *ppos)
40 {
41         struct ieee80211_local *local = file->private_data;
42         struct ieee80211_hw_mode *mode;
43         char buf[150], *p = buf;
44
45         /* FIXME: locking! */
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));
49         }
50
51         return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
52 }
53
54 static const struct file_operations modes_ops = {
55         .read = modes_read,
56         .open = mac80211_open_file_generic,
57 };
58
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)                 \
62 {                                                                       \
63         struct ieee80211_local *local = file->private_data;             \
64         char buf[buflen];                                               \
65         int res;                                                        \
66                                                                         \
67         res = scnprintf(buf, buflen, fmt "\n", ##value);                \
68         return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
69 }                                                                       \
70                                                                         \
71 static const struct file_operations name## _ops = {                     \
72         .read = name## _read,                                           \
73         .open = mac80211_open_file_generic,                             \
74 };
75
76 #define DEBUGFS_ADD(name)                                               \
77         local->debugfs.name = debugfs_create_file(#name, 0444, phyd,    \
78                                                   local, &name## _ops);
79
80 #define DEBUGFS_DEL(name)                                               \
81         debugfs_remove(local->debugfs.name);                            \
82         local->debugfs.name = NULL;
83
84
85 DEBUGFS_READONLY_FILE(channel, 20, "%d",
86                       local->hw.conf.channel);
87 DEBUGFS_READONLY_FILE(frequency, 20, "%d",
88                       local->hw.conf.freq);
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(tx_power_reduction, 20, "%d.%d dBm",
114                       local->hw.conf.tx_power_reduction / 10,
115                       local->hw.conf.tx_power_reduction % 10);
116 DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
117                       local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>");
118
119 /* statistics stuff */
120
121 static inline int rtnl_lock_local(struct ieee80211_local *local)
122 {
123         rtnl_lock();
124         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) {
125                 rtnl_unlock();
126                 return -ENODEV;
127         }
128         return 0;
129 }
130
131 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...)                 \
132         DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
133
134 static ssize_t format_devstat_counter(struct ieee80211_local *local,
135         char __user *userbuf,
136         size_t count, loff_t *ppos,
137         int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
138                           int buflen))
139 {
140         struct ieee80211_low_level_stats stats;
141         char buf[20];
142         int res;
143
144         if (!local->ops->get_stats)
145                 return -EOPNOTSUPP;
146
147         res = rtnl_lock_local(local);
148         if (res)
149                 return res;
150
151         res = local->ops->get_stats(local_to_hw(local), &stats);
152         rtnl_unlock();
153         if (!res)
154                 res = printvalue(&stats, buf, sizeof(buf));
155         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
156 }
157
158 #define DEBUGFS_DEVSTATS_FILE(name)                                     \
159 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
160                                  char *buf, int buflen)                 \
161 {                                                                       \
162         return scnprintf(buf, buflen, "%u\n", stats->name);             \
163 }                                                                       \
164 static ssize_t stats_ ##name## _read(struct file *file,                 \
165                                      char __user *userbuf,              \
166                                      size_t count, loff_t *ppos)        \
167 {                                                                       \
168         return format_devstat_counter(file->private_data,               \
169                                       userbuf,                          \
170                                       count,                            \
171                                       ppos,                             \
172                                       print_devstats_##name);           \
173 }                                                                       \
174                                                                         \
175 static const struct file_operations stats_ ##name## _ops = {            \
176         .read = stats_ ##name## _read,                                  \
177         .open = mac80211_open_file_generic,                             \
178 };
179
180 #define DEBUGFS_STATS_ADD(name)                                         \
181         local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\
182                 local, &stats_ ##name## _ops);
183
184 #define DEBUGFS_STATS_DEL(name)                                         \
185         debugfs_remove(local->debugfs.stats.name);                      \
186         local->debugfs.stats.name = NULL;
187
188 DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
189                    local->dot11TransmittedFragmentCount);
190 DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
191                    local->dot11MulticastTransmittedFrameCount);
192 DEBUGFS_STATS_FILE(failed_count, 20, "%u",
193                    local->dot11FailedCount);
194 DEBUGFS_STATS_FILE(retry_count, 20, "%u",
195                    local->dot11RetryCount);
196 DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
197                    local->dot11MultipleRetryCount);
198 DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
199                    local->dot11FrameDuplicateCount);
200 DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
201                    local->dot11ReceivedFragmentCount);
202 DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
203                    local->dot11MulticastReceivedFrameCount);
204 DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
205                    local->dot11TransmittedFrameCount);
206 DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u",
207                    local->dot11WEPUndecryptableCount);
208 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
209 DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
210                    local->tx_handlers_drop);
211 DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
212                    local->tx_handlers_queued);
213 DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
214                    local->tx_handlers_drop_unencrypted);
215 DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
216                    local->tx_handlers_drop_fragment);
217 DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
218                    local->tx_handlers_drop_wep);
219 DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
220                    local->tx_handlers_drop_not_assoc);
221 DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
222                    local->tx_handlers_drop_unauth_port);
223 DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
224                    local->rx_handlers_drop);
225 DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
226                    local->rx_handlers_queued);
227 DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
228                    local->rx_handlers_drop_nullfunc);
229 DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
230                    local->rx_handlers_drop_defrag);
231 DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
232                    local->rx_handlers_drop_short);
233 DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
234                    local->rx_handlers_drop_passive_scan);
235 DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
236                    local->tx_expand_skb_head);
237 DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
238                    local->tx_expand_skb_head_cloned);
239 DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
240                    local->rx_expand_skb_head);
241 DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
242                    local->rx_expand_skb_head2);
243 DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
244                    local->rx_handlers_fragments);
245 DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
246                    local->tx_status_drop);
247
248 static ssize_t stats_wme_rx_queue_read(struct file *file,
249                                        char __user *userbuf,
250                                        size_t count, loff_t *ppos)
251 {
252         struct ieee80211_local *local = file->private_data;
253         char buf[NUM_RX_DATA_QUEUES*15], *p = buf;
254         int i;
255
256         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
257                 p += scnprintf(p, sizeof(buf)+buf-p,
258                                "%u\n", local->wme_rx_queue[i]);
259
260         return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
261 }
262
263 static const struct file_operations stats_wme_rx_queue_ops = {
264         .read = stats_wme_rx_queue_read,
265         .open = mac80211_open_file_generic,
266 };
267
268 static ssize_t stats_wme_tx_queue_read(struct file *file,
269                                        char __user *userbuf,
270                                        size_t count, loff_t *ppos)
271 {
272         struct ieee80211_local *local = file->private_data;
273         char buf[NUM_TX_DATA_QUEUES*15], *p = buf;
274         int i;
275
276         for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
277                 p += scnprintf(p, sizeof(buf)+buf-p,
278                                "%u\n", local->wme_tx_queue[i]);
279
280         return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
281 }
282
283 static const struct file_operations stats_wme_tx_queue_ops = {
284         .read = stats_wme_tx_queue_read,
285         .open = mac80211_open_file_generic,
286 };
287 #endif
288
289 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
290 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
291 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
292 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
293
294
295 void debugfs_hw_add(struct ieee80211_local *local)
296 {
297         struct dentry *phyd = local->hw.wiphy->debugfsdir;
298         struct dentry *statsd;
299
300         if (!phyd)
301                 return;
302
303         local->debugfs.stations = debugfs_create_dir("stations", phyd);
304         local->debugfs.keys = debugfs_create_dir("keys", phyd);
305
306         DEBUGFS_ADD(channel);
307         DEBUGFS_ADD(frequency);
308         DEBUGFS_ADD(radar_detect);
309         DEBUGFS_ADD(antenna_sel_tx);
310         DEBUGFS_ADD(antenna_sel_rx);
311         DEBUGFS_ADD(bridge_packets);
312         DEBUGFS_ADD(key_tx_rx_threshold);
313         DEBUGFS_ADD(rts_threshold);
314         DEBUGFS_ADD(fragmentation_threshold);
315         DEBUGFS_ADD(short_retry_limit);
316         DEBUGFS_ADD(long_retry_limit);
317         DEBUGFS_ADD(total_ps_buffered);
318         DEBUGFS_ADD(mode);
319         DEBUGFS_ADD(wep_iv);
320         DEBUGFS_ADD(tx_power_reduction);
321         DEBUGFS_ADD(modes);
322
323         statsd = debugfs_create_dir("statistics", phyd);
324         local->debugfs.statistics = statsd;
325
326         /* if the dir failed, don't put all the other things into the root! */
327         if (!statsd)
328                 return;
329
330         DEBUGFS_STATS_ADD(transmitted_fragment_count);
331         DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
332         DEBUGFS_STATS_ADD(failed_count);
333         DEBUGFS_STATS_ADD(retry_count);
334         DEBUGFS_STATS_ADD(multiple_retry_count);
335         DEBUGFS_STATS_ADD(frame_duplicate_count);
336         DEBUGFS_STATS_ADD(received_fragment_count);
337         DEBUGFS_STATS_ADD(multicast_received_frame_count);
338         DEBUGFS_STATS_ADD(transmitted_frame_count);
339         DEBUGFS_STATS_ADD(wep_undecryptable_count);
340 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
341         DEBUGFS_STATS_ADD(tx_handlers_drop);
342         DEBUGFS_STATS_ADD(tx_handlers_queued);
343         DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
344         DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
345         DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
346         DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
347         DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
348         DEBUGFS_STATS_ADD(rx_handlers_drop);
349         DEBUGFS_STATS_ADD(rx_handlers_queued);
350         DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
351         DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
352         DEBUGFS_STATS_ADD(rx_handlers_drop_short);
353         DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
354         DEBUGFS_STATS_ADD(tx_expand_skb_head);
355         DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
356         DEBUGFS_STATS_ADD(rx_expand_skb_head);
357         DEBUGFS_STATS_ADD(rx_expand_skb_head2);
358         DEBUGFS_STATS_ADD(rx_handlers_fragments);
359         DEBUGFS_STATS_ADD(tx_status_drop);
360         DEBUGFS_STATS_ADD(wme_tx_queue);
361         DEBUGFS_STATS_ADD(wme_rx_queue);
362 #endif
363         DEBUGFS_STATS_ADD(dot11ACKFailureCount);
364         DEBUGFS_STATS_ADD(dot11RTSFailureCount);
365         DEBUGFS_STATS_ADD(dot11FCSErrorCount);
366         DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
367 }
368
369 void debugfs_hw_del(struct ieee80211_local *local)
370 {
371         DEBUGFS_DEL(channel);
372         DEBUGFS_DEL(frequency);
373         DEBUGFS_DEL(radar_detect);
374         DEBUGFS_DEL(antenna_sel_tx);
375         DEBUGFS_DEL(antenna_sel_rx);
376         DEBUGFS_DEL(bridge_packets);
377         DEBUGFS_DEL(key_tx_rx_threshold);
378         DEBUGFS_DEL(rts_threshold);
379         DEBUGFS_DEL(fragmentation_threshold);
380         DEBUGFS_DEL(short_retry_limit);
381         DEBUGFS_DEL(long_retry_limit);
382         DEBUGFS_DEL(total_ps_buffered);
383         DEBUGFS_DEL(mode);
384         DEBUGFS_DEL(wep_iv);
385         DEBUGFS_DEL(tx_power_reduction);
386         DEBUGFS_DEL(modes);
387
388         DEBUGFS_STATS_DEL(transmitted_fragment_count);
389         DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
390         DEBUGFS_STATS_DEL(failed_count);
391         DEBUGFS_STATS_DEL(retry_count);
392         DEBUGFS_STATS_DEL(multiple_retry_count);
393         DEBUGFS_STATS_DEL(frame_duplicate_count);
394         DEBUGFS_STATS_DEL(received_fragment_count);
395         DEBUGFS_STATS_DEL(multicast_received_frame_count);
396         DEBUGFS_STATS_DEL(transmitted_frame_count);
397         DEBUGFS_STATS_DEL(wep_undecryptable_count);
398         DEBUGFS_STATS_DEL(num_scans);
399 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
400         DEBUGFS_STATS_DEL(tx_handlers_drop);
401         DEBUGFS_STATS_DEL(tx_handlers_queued);
402         DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted);
403         DEBUGFS_STATS_DEL(tx_handlers_drop_fragment);
404         DEBUGFS_STATS_DEL(tx_handlers_drop_wep);
405         DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc);
406         DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port);
407         DEBUGFS_STATS_DEL(rx_handlers_drop);
408         DEBUGFS_STATS_DEL(rx_handlers_queued);
409         DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc);
410         DEBUGFS_STATS_DEL(rx_handlers_drop_defrag);
411         DEBUGFS_STATS_DEL(rx_handlers_drop_short);
412         DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan);
413         DEBUGFS_STATS_DEL(tx_expand_skb_head);
414         DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned);
415         DEBUGFS_STATS_DEL(rx_expand_skb_head);
416         DEBUGFS_STATS_DEL(rx_expand_skb_head2);
417         DEBUGFS_STATS_DEL(rx_handlers_fragments);
418         DEBUGFS_STATS_DEL(tx_status_drop);
419         DEBUGFS_STATS_DEL(wme_tx_queue);
420         DEBUGFS_STATS_DEL(wme_rx_queue);
421 #endif
422         DEBUGFS_STATS_DEL(dot11ACKFailureCount);
423         DEBUGFS_STATS_DEL(dot11RTSFailureCount);
424         DEBUGFS_STATS_DEL(dot11FCSErrorCount);
425         DEBUGFS_STATS_DEL(dot11RTSSuccessCount);
426
427         debugfs_remove(local->debugfs.statistics);
428         local->debugfs.statistics = NULL;
429         debugfs_remove(local->debugfs.stations);
430         local->debugfs.stations = NULL;
431         debugfs_remove(local->debugfs.keys);
432         local->debugfs.keys = NULL;
433 }