Commit | Line | Data |
---|---|---|
e9f207f0 JB |
1 | /* |
2 | * mac80211 debugfs for wireless PHYs | |
3 | * | |
4 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
d98ad83e | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
e9f207f0 JB |
6 | * |
7 | * GPLv2 | |
8 | * | |
9 | */ | |
10 | ||
11 | #include <linux/debugfs.h> | |
12 | #include <linux/rtnetlink.h> | |
9399b86c | 13 | #include <linux/vmalloc.h> |
e9f207f0 | 14 | #include "ieee80211_i.h" |
24487981 | 15 | #include "driver-ops.h" |
2c8dccc7 | 16 | #include "rate.h" |
e9f207f0 JB |
17 | #include "debugfs.h" |
18 | ||
07caf9d6 EP |
19 | #define DEBUGFS_FORMAT_BUFFER_SIZE 100 |
20 | ||
21 | int mac80211_format_buffer(char __user *userbuf, size_t count, | |
22 | loff_t *ppos, char *fmt, ...) | |
23 | { | |
24 | va_list args; | |
25 | char buf[DEBUGFS_FORMAT_BUFFER_SIZE]; | |
26 | int res; | |
27 | ||
28 | va_start(args, fmt); | |
29 | res = vscnprintf(buf, sizeof(buf), fmt, args); | |
30 | va_end(args); | |
31 | ||
32 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
33 | } | |
34 | ||
279daf64 | 35 | #define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \ |
e9f207f0 JB |
36 | static ssize_t name## _read(struct file *file, char __user *userbuf, \ |
37 | size_t count, loff_t *ppos) \ | |
38 | { \ | |
39 | struct ieee80211_local *local = file->private_data; \ | |
e9f207f0 | 40 | \ |
07caf9d6 EP |
41 | return mac80211_format_buffer(userbuf, count, ppos, \ |
42 | fmt "\n", ##value); \ | |
279daf64 BG |
43 | } |
44 | ||
45 | #define DEBUGFS_READONLY_FILE_OPS(name) \ | |
e9f207f0 JB |
46 | static const struct file_operations name## _ops = { \ |
47 | .read = name## _read, \ | |
234e3405 | 48 | .open = simple_open, \ |
2b18ab36 | 49 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
50 | }; |
51 | ||
279daf64 BG |
52 | #define DEBUGFS_READONLY_FILE(name, fmt, value...) \ |
53 | DEBUGFS_READONLY_FILE_FN(name, fmt, value) \ | |
54 | DEBUGFS_READONLY_FILE_OPS(name) | |
55 | ||
e9f207f0 | 56 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 57 | debugfs_create_file(#name, 0400, phyd, local, &name## _ops); |
e9f207f0 | 58 | |
827b1fb4 | 59 | #define DEBUGFS_ADD_MODE(name, mode) \ |
7bcfaf2f | 60 | debugfs_create_file(#name, mode, phyd, local, &name## _ops); |
e9f207f0 JB |
61 | |
62 | ||
83bdf2a1 BG |
63 | DEBUGFS_READONLY_FILE(user_power, "%d", |
64 | local->user_power_level); | |
65 | DEBUGFS_READONLY_FILE(power, "%d", | |
66 | local->hw.conf.power_level); | |
07caf9d6 | 67 | DEBUGFS_READONLY_FILE(total_ps_buffered, "%d", |
e9f207f0 | 68 | local->total_ps_buffered); |
07caf9d6 | 69 | DEBUGFS_READONLY_FILE(wep_iv, "%#08x", |
e9f207f0 | 70 | local->wep_iv & 0xffffff); |
07caf9d6 | 71 | DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s", |
af65cd96 | 72 | local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver"); |
3b5d665b | 73 | |
8d51dbb8 THJ |
74 | static ssize_t aqm_read(struct file *file, |
75 | char __user *user_buf, | |
76 | size_t count, | |
77 | loff_t *ppos) | |
9399b86c | 78 | { |
8d51dbb8 | 79 | struct ieee80211_local *local = file->private_data; |
9399b86c | 80 | struct fq *fq = &local->fq; |
8d51dbb8 | 81 | char buf[200]; |
9399b86c | 82 | int len = 0; |
9399b86c MK |
83 | |
84 | spin_lock_bh(&local->fq.lock); | |
85 | rcu_read_lock(); | |
86 | ||
8d51dbb8 THJ |
87 | len = scnprintf(buf, sizeof(buf), |
88 | "access name value\n" | |
89 | "R fq_flows_cnt %u\n" | |
90 | "R fq_backlog %u\n" | |
91 | "R fq_overlimit %u\n" | |
92 | "R fq_collisions %u\n" | |
93 | "RW fq_limit %u\n" | |
94 | "RW fq_quantum %u\n", | |
95 | fq->flows_cnt, | |
96 | fq->backlog, | |
97 | fq->overlimit, | |
98 | fq->collisions, | |
99 | fq->limit, | |
100 | fq->quantum); | |
9399b86c MK |
101 | |
102 | rcu_read_unlock(); | |
103 | spin_unlock_bh(&local->fq.lock); | |
104 | ||
9399b86c | 105 | return simple_read_from_buffer(user_buf, count, ppos, |
8d51dbb8 | 106 | buf, len); |
9399b86c MK |
107 | } |
108 | ||
109 | static ssize_t aqm_write(struct file *file, | |
110 | const char __user *user_buf, | |
111 | size_t count, | |
112 | loff_t *ppos) | |
113 | { | |
8d51dbb8 | 114 | struct ieee80211_local *local = file->private_data; |
9399b86c MK |
115 | char buf[100]; |
116 | size_t len; | |
117 | ||
118 | if (count > sizeof(buf)) | |
119 | return -EINVAL; | |
120 | ||
121 | if (copy_from_user(buf, user_buf, count)) | |
122 | return -EFAULT; | |
123 | ||
124 | buf[sizeof(buf) - 1] = '\0'; | |
125 | len = strlen(buf); | |
126 | if (len > 0 && buf[len-1] == '\n') | |
127 | buf[len-1] = 0; | |
128 | ||
129 | if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1) | |
130 | return count; | |
131 | else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1) | |
132 | return count; | |
133 | ||
134 | return -EINVAL; | |
135 | } | |
136 | ||
137 | static const struct file_operations aqm_ops = { | |
138 | .write = aqm_write, | |
139 | .read = aqm_read, | |
8d51dbb8 | 140 | .open = simple_open, |
9399b86c MK |
141 | .llseek = default_llseek, |
142 | }; | |
143 | ||
2ad4814f | 144 | #ifdef CONFIG_PM |
827b1fb4 JB |
145 | static ssize_t reset_write(struct file *file, const char __user *user_buf, |
146 | size_t count, loff_t *ppos) | |
147 | { | |
148 | struct ieee80211_local *local = file->private_data; | |
149 | ||
150 | rtnl_lock(); | |
eecc4800 | 151 | __ieee80211_suspend(&local->hw, NULL); |
827b1fb4 JB |
152 | __ieee80211_resume(&local->hw); |
153 | rtnl_unlock(); | |
154 | ||
155 | return count; | |
156 | } | |
157 | ||
158 | static const struct file_operations reset_ops = { | |
159 | .write = reset_write, | |
234e3405 | 160 | .open = simple_open, |
6038f373 | 161 | .llseek = noop_llseek, |
827b1fb4 | 162 | }; |
2ad4814f | 163 | #endif |
827b1fb4 | 164 | |
68920c97 | 165 | static const char *hw_flag_names[] = { |
30686bf7 JB |
166 | #define FLAG(F) [IEEE80211_HW_##F] = #F |
167 | FLAG(HAS_RATE_CONTROL), | |
168 | FLAG(RX_INCLUDES_FCS), | |
169 | FLAG(HOST_BROADCAST_PS_BUFFERING), | |
170 | FLAG(SIGNAL_UNSPEC), | |
171 | FLAG(SIGNAL_DBM), | |
172 | FLAG(NEED_DTIM_BEFORE_ASSOC), | |
173 | FLAG(SPECTRUM_MGMT), | |
174 | FLAG(AMPDU_AGGREGATION), | |
175 | FLAG(SUPPORTS_PS), | |
176 | FLAG(PS_NULLFUNC_STACK), | |
177 | FLAG(SUPPORTS_DYNAMIC_PS), | |
178 | FLAG(MFP_CAPABLE), | |
179 | FLAG(WANT_MONITOR_VIF), | |
180 | FLAG(NO_AUTO_VIF), | |
181 | FLAG(SW_CRYPTO_CONTROL), | |
182 | FLAG(SUPPORT_FAST_XMIT), | |
183 | FLAG(REPORTS_TX_ACK_STATUS), | |
184 | FLAG(CONNECTION_MONITOR), | |
185 | FLAG(QUEUE_CONTROL), | |
186 | FLAG(SUPPORTS_PER_STA_GTK), | |
187 | FLAG(AP_LINK_PS), | |
188 | FLAG(TX_AMPDU_SETUP_IN_HW), | |
189 | FLAG(SUPPORTS_RC_TABLE), | |
190 | FLAG(P2P_DEV_ADDR_FOR_INTF), | |
191 | FLAG(TIMING_BEACON_ONLY), | |
192 | FLAG(SUPPORTS_HT_CCK_RATES), | |
193 | FLAG(CHANCTX_STA_CSA), | |
194 | FLAG(SUPPORTS_CLONED_SKBS), | |
195 | FLAG(SINGLE_SCAN_ON_ALL_BANDS), | |
b98fb44f | 196 | FLAG(TDLS_WIDER_BW), |
99e7ca44 | 197 | FLAG(SUPPORTS_AMSDU_IN_AMPDU), |
35afa588 | 198 | FLAG(BEACON_TX_STATUS), |
31104891 | 199 | FLAG(NEEDS_UNIQUE_STA_ADDR), |
412a6d80 | 200 | FLAG(SUPPORTS_REORDERING_BUFFER), |
c9c5962b | 201 | FLAG(USES_RSS), |
6e0456b5 FF |
202 | FLAG(TX_AMSDU), |
203 | FLAG(TX_FRAG_LIST), | |
e8a24cd4 | 204 | FLAG(REPORTS_LOW_ACK), |
30686bf7 JB |
205 | #undef FLAG |
206 | }; | |
207 | ||
279daf64 BG |
208 | static ssize_t hwflags_read(struct file *file, char __user *user_buf, |
209 | size_t count, loff_t *ppos) | |
210 | { | |
211 | struct ieee80211_local *local = file->private_data; | |
30686bf7 JB |
212 | size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS; |
213 | char *buf = kzalloc(bufsz, GFP_KERNEL); | |
214 | char *pos = buf, *end = buf + bufsz - 1; | |
279daf64 | 215 | ssize_t rv; |
30686bf7 | 216 | int i; |
279daf64 | 217 | |
d15b8459 | 218 | if (!buf) |
30686bf7 JB |
219 | return -ENOMEM; |
220 | ||
221 | /* fail compilation if somebody adds or removes | |
222 | * a flag without updating the name array above | |
223 | */ | |
68920c97 | 224 | BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS); |
30686bf7 JB |
225 | |
226 | for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) { | |
227 | if (test_bit(i, local->hw.flags)) | |
4633dfc3 | 228 | pos += scnprintf(pos, end - pos, "%s\n", |
30686bf7 JB |
229 | hw_flag_names[i]); |
230 | } | |
279daf64 BG |
231 | |
232 | rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); | |
233 | kfree(buf); | |
234 | return rv; | |
235 | } | |
199d69f2 | 236 | |
db2e6bd4 JB |
237 | static ssize_t queues_read(struct file *file, char __user *user_buf, |
238 | size_t count, loff_t *ppos) | |
239 | { | |
240 | struct ieee80211_local *local = file->private_data; | |
241 | unsigned long flags; | |
242 | char buf[IEEE80211_MAX_QUEUES * 20]; | |
243 | int q, res = 0; | |
244 | ||
245 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
246 | for (q = 0; q < local->hw.queues; q++) | |
247 | res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, | |
248 | local->queue_stop_reasons[q], | |
3b8d81e0 | 249 | skb_queue_len(&local->pending[q])); |
db2e6bd4 JB |
250 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
251 | ||
252 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
253 | } | |
254 | ||
279daf64 | 255 | DEBUGFS_READONLY_FILE_OPS(hwflags); |
279daf64 | 256 | DEBUGFS_READONLY_FILE_OPS(queues); |
db2e6bd4 | 257 | |
e9f207f0 JB |
258 | /* statistics stuff */ |
259 | ||
e9f207f0 JB |
260 | static ssize_t format_devstat_counter(struct ieee80211_local *local, |
261 | char __user *userbuf, | |
262 | size_t count, loff_t *ppos, | |
263 | int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, | |
264 | int buflen)) | |
265 | { | |
266 | struct ieee80211_low_level_stats stats; | |
267 | char buf[20]; | |
268 | int res; | |
269 | ||
75636525 | 270 | rtnl_lock(); |
24487981 | 271 | res = drv_get_stats(local, &stats); |
e9f207f0 | 272 | rtnl_unlock(); |
24487981 JB |
273 | if (res) |
274 | return res; | |
275 | res = printvalue(&stats, buf, sizeof(buf)); | |
e9f207f0 JB |
276 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
277 | } | |
278 | ||
279 | #define DEBUGFS_DEVSTATS_FILE(name) \ | |
280 | static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ | |
281 | char *buf, int buflen) \ | |
282 | { \ | |
283 | return scnprintf(buf, buflen, "%u\n", stats->name); \ | |
284 | } \ | |
285 | static ssize_t stats_ ##name## _read(struct file *file, \ | |
286 | char __user *userbuf, \ | |
287 | size_t count, loff_t *ppos) \ | |
288 | { \ | |
289 | return format_devstat_counter(file->private_data, \ | |
290 | userbuf, \ | |
291 | count, \ | |
292 | ppos, \ | |
293 | print_devstats_##name); \ | |
294 | } \ | |
295 | \ | |
296 | static const struct file_operations stats_ ##name## _ops = { \ | |
297 | .read = stats_ ##name## _read, \ | |
234e3405 | 298 | .open = simple_open, \ |
2b18ab36 | 299 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
300 | }; |
301 | ||
f1160434 JB |
302 | #define DEBUGFS_STATS_ADD(name) \ |
303 | debugfs_create_u32(#name, 0400, statsd, &local->name); | |
2826bcd8 | 304 | #define DEBUGFS_DEVSTATS_ADD(name) \ |
7bcfaf2f | 305 | debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); |
e9f207f0 | 306 | |
e9f207f0 JB |
307 | DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); |
308 | DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); | |
309 | DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); | |
310 | DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); | |
311 | ||
e9f207f0 JB |
312 | void debugfs_hw_add(struct ieee80211_local *local) |
313 | { | |
314 | struct dentry *phyd = local->hw.wiphy->debugfsdir; | |
315 | struct dentry *statsd; | |
316 | ||
317 | if (!phyd) | |
318 | return; | |
319 | ||
e9f207f0 JB |
320 | local->debugfs.keys = debugfs_create_dir("keys", phyd); |
321 | ||
e9f207f0 | 322 | DEBUGFS_ADD(total_ps_buffered); |
e9f207f0 | 323 | DEBUGFS_ADD(wep_iv); |
db2e6bd4 | 324 | DEBUGFS_ADD(queues); |
2ad4814f | 325 | #ifdef CONFIG_PM |
827b1fb4 | 326 | DEBUGFS_ADD_MODE(reset, 0200); |
2ad4814f | 327 | #endif |
279daf64 | 328 | DEBUGFS_ADD(hwflags); |
83bdf2a1 BG |
329 | DEBUGFS_ADD(user_power); |
330 | DEBUGFS_ADD(power); | |
8d51dbb8 THJ |
331 | |
332 | if (local->ops->wake_tx_queue) | |
333 | DEBUGFS_ADD_MODE(aqm, 0600); | |
e9f207f0 JB |
334 | |
335 | statsd = debugfs_create_dir("statistics", phyd); | |
e9f207f0 JB |
336 | |
337 | /* if the dir failed, don't put all the other things into the root! */ | |
338 | if (!statsd) | |
339 | return; | |
340 | ||
c206ca67 | 341 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
f1160434 JB |
342 | DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount); |
343 | DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount); | |
344 | DEBUGFS_STATS_ADD(dot11FailedCount); | |
345 | DEBUGFS_STATS_ADD(dot11RetryCount); | |
346 | DEBUGFS_STATS_ADD(dot11MultipleRetryCount); | |
347 | DEBUGFS_STATS_ADD(dot11FrameDuplicateCount); | |
348 | DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount); | |
349 | DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount); | |
350 | DEBUGFS_STATS_ADD(dot11TransmittedFrameCount); | |
f1160434 JB |
351 | DEBUGFS_STATS_ADD(tx_handlers_drop); |
352 | DEBUGFS_STATS_ADD(tx_handlers_queued); | |
353 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep); | |
354 | DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); | |
355 | DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); | |
356 | DEBUGFS_STATS_ADD(rx_handlers_drop); | |
357 | DEBUGFS_STATS_ADD(rx_handlers_queued); | |
358 | DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); | |
359 | DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); | |
f1160434 JB |
360 | DEBUGFS_STATS_ADD(tx_expand_skb_head); |
361 | DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); | |
362 | DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag); | |
363 | DEBUGFS_STATS_ADD(rx_handlers_fragments); | |
364 | DEBUGFS_STATS_ADD(tx_status_drop); | |
e9f207f0 | 365 | #endif |
2826bcd8 FF |
366 | DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); |
367 | DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); | |
368 | DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); | |
369 | DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); | |
e9f207f0 | 370 | } |