Commit | Line | Data |
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e9f207f0 JB |
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" | |
2c8dccc7 | 13 | #include "rate.h" |
e9f207f0 JB |
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 | ||
e9f207f0 JB |
22 | #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \ |
23 | static 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 | \ | |
34 | static const struct file_operations name## _ops = { \ | |
35 | .read = name## _read, \ | |
36 | .open = mac80211_open_file_generic, \ | |
37 | }; | |
38 | ||
39 | #define DEBUGFS_ADD(name) \ | |
bebb8a5e | 40 | local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \ |
e9f207f0 JB |
41 | local, &name## _ops); |
42 | ||
43 | #define DEBUGFS_DEL(name) \ | |
44 | debugfs_remove(local->debugfs.name); \ | |
45 | local->debugfs.name = NULL; | |
46 | ||
47 | ||
e9f207f0 | 48 | DEBUGFS_READONLY_FILE(frequency, 20, "%d", |
8318d78a | 49 | local->hw.conf.channel->center_freq); |
e9f207f0 JB |
50 | DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d", |
51 | local->rts_threshold); | |
52 | DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d", | |
53 | local->fragmentation_threshold); | |
54 | DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d", | |
9124b077 | 55 | local->hw.conf.short_frame_max_tx_count); |
e9f207f0 | 56 | DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", |
9124b077 | 57 | local->hw.conf.long_frame_max_tx_count); |
e9f207f0 JB |
58 | DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", |
59 | local->total_ps_buffered); | |
3b5d665b | 60 | DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x", |
e9f207f0 | 61 | local->wep_iv & 0xffffff); |
e9f207f0 JB |
62 | DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s", |
63 | local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>"); | |
3b5d665b AF |
64 | |
65 | static ssize_t tsf_read(struct file *file, char __user *user_buf, | |
66 | size_t count, loff_t *ppos) | |
67 | { | |
68 | struct ieee80211_local *local = file->private_data; | |
69 | u64 tsf = 0; | |
70 | char buf[100]; | |
71 | ||
72 | if (local->ops->get_tsf) | |
73 | tsf = local->ops->get_tsf(local_to_hw(local)); | |
74 | ||
75 | snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf); | |
76 | ||
77 | return simple_read_from_buffer(user_buf, count, ppos, buf, 19); | |
78 | } | |
79 | ||
80 | static ssize_t tsf_write(struct file *file, | |
81 | const char __user *user_buf, | |
82 | size_t count, loff_t *ppos) | |
83 | { | |
84 | struct ieee80211_local *local = file->private_data; | |
85 | unsigned long long tsf; | |
86 | char buf[100]; | |
87 | size_t len; | |
88 | ||
89 | len = min(count, sizeof(buf) - 1); | |
90 | if (copy_from_user(buf, user_buf, len)) | |
91 | return -EFAULT; | |
92 | buf[len] = '\0'; | |
93 | ||
94 | if (strncmp(buf, "reset", 5) == 0) { | |
95 | if (local->ops->reset_tsf) { | |
96 | local->ops->reset_tsf(local_to_hw(local)); | |
97 | printk(KERN_INFO "%s: debugfs reset TSF\n", wiphy_name(local->hw.wiphy)); | |
98 | } | |
99 | } else { | |
100 | tsf = simple_strtoul(buf, NULL, 0); | |
101 | if (local->ops->set_tsf) { | |
102 | local->ops->set_tsf(local_to_hw(local), tsf); | |
103 | printk(KERN_INFO "%s: debugfs set TSF to %#018llx\n", wiphy_name(local->hw.wiphy), tsf); | |
104 | } | |
105 | } | |
106 | ||
107 | return count; | |
108 | } | |
109 | ||
110 | static const struct file_operations tsf_ops = { | |
111 | .read = tsf_read, | |
112 | .write = tsf_write, | |
113 | .open = mac80211_open_file_generic | |
114 | }; | |
e9f207f0 JB |
115 | |
116 | /* statistics stuff */ | |
117 | ||
e9f207f0 JB |
118 | #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \ |
119 | DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value) | |
120 | ||
121 | static ssize_t format_devstat_counter(struct ieee80211_local *local, | |
122 | char __user *userbuf, | |
123 | size_t count, loff_t *ppos, | |
124 | int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, | |
125 | int buflen)) | |
126 | { | |
127 | struct ieee80211_low_level_stats stats; | |
128 | char buf[20]; | |
129 | int res; | |
130 | ||
131 | if (!local->ops->get_stats) | |
132 | return -EOPNOTSUPP; | |
133 | ||
75636525 | 134 | rtnl_lock(); |
e9f207f0 JB |
135 | res = local->ops->get_stats(local_to_hw(local), &stats); |
136 | rtnl_unlock(); | |
137 | if (!res) | |
138 | res = printvalue(&stats, buf, sizeof(buf)); | |
139 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
140 | } | |
141 | ||
142 | #define DEBUGFS_DEVSTATS_FILE(name) \ | |
143 | static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ | |
144 | char *buf, int buflen) \ | |
145 | { \ | |
146 | return scnprintf(buf, buflen, "%u\n", stats->name); \ | |
147 | } \ | |
148 | static ssize_t stats_ ##name## _read(struct file *file, \ | |
149 | char __user *userbuf, \ | |
150 | size_t count, loff_t *ppos) \ | |
151 | { \ | |
152 | return format_devstat_counter(file->private_data, \ | |
153 | userbuf, \ | |
154 | count, \ | |
155 | ppos, \ | |
156 | print_devstats_##name); \ | |
157 | } \ | |
158 | \ | |
159 | static const struct file_operations stats_ ##name## _ops = { \ | |
160 | .read = stats_ ##name## _read, \ | |
161 | .open = mac80211_open_file_generic, \ | |
162 | }; | |
163 | ||
164 | #define DEBUGFS_STATS_ADD(name) \ | |
bebb8a5e | 165 | local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\ |
e9f207f0 JB |
166 | local, &stats_ ##name## _ops); |
167 | ||
168 | #define DEBUGFS_STATS_DEL(name) \ | |
169 | debugfs_remove(local->debugfs.stats.name); \ | |
170 | local->debugfs.stats.name = NULL; | |
171 | ||
172 | DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u", | |
173 | local->dot11TransmittedFragmentCount); | |
174 | DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u", | |
175 | local->dot11MulticastTransmittedFrameCount); | |
176 | DEBUGFS_STATS_FILE(failed_count, 20, "%u", | |
177 | local->dot11FailedCount); | |
178 | DEBUGFS_STATS_FILE(retry_count, 20, "%u", | |
179 | local->dot11RetryCount); | |
180 | DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u", | |
181 | local->dot11MultipleRetryCount); | |
182 | DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u", | |
183 | local->dot11FrameDuplicateCount); | |
184 | DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u", | |
185 | local->dot11ReceivedFragmentCount); | |
186 | DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u", | |
187 | local->dot11MulticastReceivedFrameCount); | |
188 | DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u", | |
189 | local->dot11TransmittedFrameCount); | |
e9f207f0 JB |
190 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
191 | DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u", | |
192 | local->tx_handlers_drop); | |
193 | DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u", | |
194 | local->tx_handlers_queued); | |
195 | DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u", | |
196 | local->tx_handlers_drop_unencrypted); | |
197 | DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u", | |
198 | local->tx_handlers_drop_fragment); | |
199 | DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u", | |
200 | local->tx_handlers_drop_wep); | |
201 | DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u", | |
202 | local->tx_handlers_drop_not_assoc); | |
203 | DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u", | |
204 | local->tx_handlers_drop_unauth_port); | |
205 | DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u", | |
206 | local->rx_handlers_drop); | |
207 | DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u", | |
208 | local->rx_handlers_queued); | |
209 | DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u", | |
210 | local->rx_handlers_drop_nullfunc); | |
211 | DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u", | |
212 | local->rx_handlers_drop_defrag); | |
213 | DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u", | |
214 | local->rx_handlers_drop_short); | |
215 | DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u", | |
216 | local->rx_handlers_drop_passive_scan); | |
217 | DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u", | |
218 | local->tx_expand_skb_head); | |
219 | DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u", | |
220 | local->tx_expand_skb_head_cloned); | |
221 | DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u", | |
222 | local->rx_expand_skb_head); | |
223 | DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u", | |
224 | local->rx_expand_skb_head2); | |
225 | DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u", | |
226 | local->rx_handlers_fragments); | |
227 | DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u", | |
228 | local->tx_status_drop); | |
229 | ||
e9f207f0 JB |
230 | #endif |
231 | ||
232 | DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); | |
233 | DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); | |
234 | DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); | |
235 | DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); | |
236 | ||
237 | ||
238 | void debugfs_hw_add(struct ieee80211_local *local) | |
239 | { | |
240 | struct dentry *phyd = local->hw.wiphy->debugfsdir; | |
241 | struct dentry *statsd; | |
242 | ||
243 | if (!phyd) | |
244 | return; | |
245 | ||
246 | local->debugfs.stations = debugfs_create_dir("stations", phyd); | |
247 | local->debugfs.keys = debugfs_create_dir("keys", phyd); | |
248 | ||
e9f207f0 | 249 | DEBUGFS_ADD(frequency); |
e9f207f0 JB |
250 | DEBUGFS_ADD(rts_threshold); |
251 | DEBUGFS_ADD(fragmentation_threshold); | |
252 | DEBUGFS_ADD(short_retry_limit); | |
253 | DEBUGFS_ADD(long_retry_limit); | |
254 | DEBUGFS_ADD(total_ps_buffered); | |
e9f207f0 | 255 | DEBUGFS_ADD(wep_iv); |
ae54c985 | 256 | DEBUGFS_ADD(tsf); |
e9f207f0 JB |
257 | |
258 | statsd = debugfs_create_dir("statistics", phyd); | |
259 | local->debugfs.statistics = statsd; | |
260 | ||
261 | /* if the dir failed, don't put all the other things into the root! */ | |
262 | if (!statsd) | |
263 | return; | |
264 | ||
265 | DEBUGFS_STATS_ADD(transmitted_fragment_count); | |
266 | DEBUGFS_STATS_ADD(multicast_transmitted_frame_count); | |
267 | DEBUGFS_STATS_ADD(failed_count); | |
268 | DEBUGFS_STATS_ADD(retry_count); | |
269 | DEBUGFS_STATS_ADD(multiple_retry_count); | |
270 | DEBUGFS_STATS_ADD(frame_duplicate_count); | |
271 | DEBUGFS_STATS_ADD(received_fragment_count); | |
272 | DEBUGFS_STATS_ADD(multicast_received_frame_count); | |
273 | DEBUGFS_STATS_ADD(transmitted_frame_count); | |
e9f207f0 JB |
274 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
275 | DEBUGFS_STATS_ADD(tx_handlers_drop); | |
276 | DEBUGFS_STATS_ADD(tx_handlers_queued); | |
277 | DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted); | |
278 | DEBUGFS_STATS_ADD(tx_handlers_drop_fragment); | |
279 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep); | |
280 | DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); | |
281 | DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); | |
282 | DEBUGFS_STATS_ADD(rx_handlers_drop); | |
283 | DEBUGFS_STATS_ADD(rx_handlers_queued); | |
284 | DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); | |
285 | DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); | |
286 | DEBUGFS_STATS_ADD(rx_handlers_drop_short); | |
287 | DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan); | |
288 | DEBUGFS_STATS_ADD(tx_expand_skb_head); | |
289 | DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); | |
290 | DEBUGFS_STATS_ADD(rx_expand_skb_head); | |
291 | DEBUGFS_STATS_ADD(rx_expand_skb_head2); | |
292 | DEBUGFS_STATS_ADD(rx_handlers_fragments); | |
293 | DEBUGFS_STATS_ADD(tx_status_drop); | |
e9f207f0 JB |
294 | #endif |
295 | DEBUGFS_STATS_ADD(dot11ACKFailureCount); | |
296 | DEBUGFS_STATS_ADD(dot11RTSFailureCount); | |
297 | DEBUGFS_STATS_ADD(dot11FCSErrorCount); | |
298 | DEBUGFS_STATS_ADD(dot11RTSSuccessCount); | |
299 | } | |
300 | ||
301 | void debugfs_hw_del(struct ieee80211_local *local) | |
302 | { | |
e9f207f0 | 303 | DEBUGFS_DEL(frequency); |
e9f207f0 JB |
304 | DEBUGFS_DEL(rts_threshold); |
305 | DEBUGFS_DEL(fragmentation_threshold); | |
306 | DEBUGFS_DEL(short_retry_limit); | |
307 | DEBUGFS_DEL(long_retry_limit); | |
308 | DEBUGFS_DEL(total_ps_buffered); | |
e9f207f0 | 309 | DEBUGFS_DEL(wep_iv); |
ae54c985 | 310 | DEBUGFS_DEL(tsf); |
e9f207f0 JB |
311 | |
312 | DEBUGFS_STATS_DEL(transmitted_fragment_count); | |
313 | DEBUGFS_STATS_DEL(multicast_transmitted_frame_count); | |
314 | DEBUGFS_STATS_DEL(failed_count); | |
315 | DEBUGFS_STATS_DEL(retry_count); | |
316 | DEBUGFS_STATS_DEL(multiple_retry_count); | |
317 | DEBUGFS_STATS_DEL(frame_duplicate_count); | |
318 | DEBUGFS_STATS_DEL(received_fragment_count); | |
319 | DEBUGFS_STATS_DEL(multicast_received_frame_count); | |
320 | DEBUGFS_STATS_DEL(transmitted_frame_count); | |
e9f207f0 JB |
321 | DEBUGFS_STATS_DEL(num_scans); |
322 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
323 | DEBUGFS_STATS_DEL(tx_handlers_drop); | |
324 | DEBUGFS_STATS_DEL(tx_handlers_queued); | |
325 | DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted); | |
326 | DEBUGFS_STATS_DEL(tx_handlers_drop_fragment); | |
327 | DEBUGFS_STATS_DEL(tx_handlers_drop_wep); | |
328 | DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc); | |
329 | DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port); | |
330 | DEBUGFS_STATS_DEL(rx_handlers_drop); | |
331 | DEBUGFS_STATS_DEL(rx_handlers_queued); | |
332 | DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc); | |
333 | DEBUGFS_STATS_DEL(rx_handlers_drop_defrag); | |
334 | DEBUGFS_STATS_DEL(rx_handlers_drop_short); | |
335 | DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan); | |
336 | DEBUGFS_STATS_DEL(tx_expand_skb_head); | |
337 | DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned); | |
338 | DEBUGFS_STATS_DEL(rx_expand_skb_head); | |
339 | DEBUGFS_STATS_DEL(rx_expand_skb_head2); | |
340 | DEBUGFS_STATS_DEL(rx_handlers_fragments); | |
341 | DEBUGFS_STATS_DEL(tx_status_drop); | |
e9f207f0 JB |
342 | #endif |
343 | DEBUGFS_STATS_DEL(dot11ACKFailureCount); | |
344 | DEBUGFS_STATS_DEL(dot11RTSFailureCount); | |
345 | DEBUGFS_STATS_DEL(dot11FCSErrorCount); | |
346 | DEBUGFS_STATS_DEL(dot11RTSSuccessCount); | |
347 | ||
348 | debugfs_remove(local->debugfs.statistics); | |
349 | local->debugfs.statistics = NULL; | |
350 | debugfs_remove(local->debugfs.stations); | |
351 | local->debugfs.stations = NULL; | |
352 | debugfs_remove(local->debugfs.keys); | |
353 | local->debugfs.keys = NULL; | |
354 | } |