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11#include <linux/debugfs.h>
12#include <linux/rtnetlink.h>
13#include <linux/vmalloc.h>
14#include "ieee80211_i.h"
15#include "driver-ops.h"
16#include "rate.h"
17#include "debugfs.h"
18
19#define DEBUGFS_FORMAT_BUFFER_SIZE 100
20
21int 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
35#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
36static 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; \
40 \
41 return mac80211_format_buffer(userbuf, count, ppos, \
42 fmt "\n", ##value); \
43}
44
45#define DEBUGFS_READONLY_FILE_OPS(name) \
46static const struct file_operations name## _ops = { \
47 .read = name## _read, \
48 .open = simple_open, \
49 .llseek = generic_file_llseek, \
50};
51
52#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
53 DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
54 DEBUGFS_READONLY_FILE_OPS(name)
55
56#define DEBUGFS_ADD(name) \
57 debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
58
59#define DEBUGFS_ADD_MODE(name, mode) \
60 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
61
62
63DEBUGFS_READONLY_FILE(user_power, "%d",
64 local->user_power_level);
65DEBUGFS_READONLY_FILE(power, "%d",
66 local->hw.conf.power_level);
67DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
68 local->total_ps_buffered);
69DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
70 local->wep_iv & 0xffffff);
71DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
72 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
73
74static ssize_t aqm_read(struct file *file,
75 char __user *user_buf,
76 size_t count,
77 loff_t *ppos)
78{
79 struct ieee80211_local *local = file->private_data;
80 struct fq *fq = &local->fq;
81 char buf[200];
82 int len = 0;
83
84 spin_lock_bh(&local->fq.lock);
85 rcu_read_lock();
86
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_overmemory %u\n"
93 "R fq_collisions %u\n"
94 "R fq_memory_usage %u\n"
95 "RW fq_memory_limit %u\n"
96 "RW fq_limit %u\n"
97 "RW fq_quantum %u\n",
98 fq->flows_cnt,
99 fq->backlog,
100 fq->overmemory,
101 fq->overlimit,
102 fq->collisions,
103 fq->memory_usage,
104 fq->memory_limit,
105 fq->limit,
106 fq->quantum);
107
108 rcu_read_unlock();
109 spin_unlock_bh(&local->fq.lock);
110
111 return simple_read_from_buffer(user_buf, count, ppos,
112 buf, len);
113}
114
115static ssize_t aqm_write(struct file *file,
116 const char __user *user_buf,
117 size_t count,
118 loff_t *ppos)
119{
120 struct ieee80211_local *local = file->private_data;
121 char buf[100];
122 size_t len;
123
124 if (count > sizeof(buf))
125 return -EINVAL;
126
127 if (copy_from_user(buf, user_buf, count))
128 return -EFAULT;
129
130 buf[sizeof(buf) - 1] = '\0';
131 len = strlen(buf);
132 if (len > 0 && buf[len-1] == '\n')
133 buf[len-1] = 0;
134
135 if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
136 return count;
137 else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1)
138 return count;
139 else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
140 return count;
141
142 return -EINVAL;
143}
144
145static const struct file_operations aqm_ops = {
146 .write = aqm_write,
147 .read = aqm_read,
148 .open = simple_open,
149 .llseek = default_llseek,
150};
151
152#ifdef CONFIG_PM
153static ssize_t reset_write(struct file *file, const char __user *user_buf,
154 size_t count, loff_t *ppos)
155{
156 struct ieee80211_local *local = file->private_data;
157
158 rtnl_lock();
159 __ieee80211_suspend(&local->hw, NULL);
160 __ieee80211_resume(&local->hw);
161 rtnl_unlock();
162
163 return count;
164}
165
166static const struct file_operations reset_ops = {
167 .write = reset_write,
168 .open = simple_open,
169 .llseek = noop_llseek,
170};
171#endif
172
173static const char *hw_flag_names[] = {
174#define FLAG(F) [IEEE80211_HW_##F] = #F
175 FLAG(HAS_RATE_CONTROL),
176 FLAG(RX_INCLUDES_FCS),
177 FLAG(HOST_BROADCAST_PS_BUFFERING),
178 FLAG(SIGNAL_UNSPEC),
179 FLAG(SIGNAL_DBM),
180 FLAG(NEED_DTIM_BEFORE_ASSOC),
181 FLAG(SPECTRUM_MGMT),
182 FLAG(AMPDU_AGGREGATION),
183 FLAG(SUPPORTS_PS),
184 FLAG(PS_NULLFUNC_STACK),
185 FLAG(SUPPORTS_DYNAMIC_PS),
186 FLAG(MFP_CAPABLE),
187 FLAG(WANT_MONITOR_VIF),
188 FLAG(NO_AUTO_VIF),
189 FLAG(SW_CRYPTO_CONTROL),
190 FLAG(SUPPORT_FAST_XMIT),
191 FLAG(REPORTS_TX_ACK_STATUS),
192 FLAG(CONNECTION_MONITOR),
193 FLAG(QUEUE_CONTROL),
194 FLAG(SUPPORTS_PER_STA_GTK),
195 FLAG(AP_LINK_PS),
196 FLAG(TX_AMPDU_SETUP_IN_HW),
197 FLAG(SUPPORTS_RC_TABLE),
198 FLAG(P2P_DEV_ADDR_FOR_INTF),
199 FLAG(TIMING_BEACON_ONLY),
200 FLAG(SUPPORTS_HT_CCK_RATES),
201 FLAG(CHANCTX_STA_CSA),
202 FLAG(SUPPORTS_CLONED_SKBS),
203 FLAG(SINGLE_SCAN_ON_ALL_BANDS),
204 FLAG(TDLS_WIDER_BW),
205 FLAG(SUPPORTS_AMSDU_IN_AMPDU),
206 FLAG(BEACON_TX_STATUS),
207 FLAG(NEEDS_UNIQUE_STA_ADDR),
208 FLAG(SUPPORTS_REORDERING_BUFFER),
209 FLAG(USES_RSS),
210 FLAG(TX_AMSDU),
211 FLAG(TX_FRAG_LIST),
212 FLAG(REPORTS_LOW_ACK),
213 FLAG(SUPPORTS_TX_FRAG),
214 FLAG(SUPPORTS_TDLS_BUFFER_STA),
215 FLAG(DEAUTH_NEED_MGD_TX_PREP),
216 FLAG(DOESNT_SUPPORT_QOS_NDP),
217#undef FLAG
218};
219
220static ssize_t hwflags_read(struct file *file, char __user *user_buf,
221 size_t count, loff_t *ppos)
222{
223 struct ieee80211_local *local = file->private_data;
224 size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
225 char *buf = kzalloc(bufsz, GFP_KERNEL);
226 char *pos = buf, *end = buf + bufsz - 1;
227 ssize_t rv;
228 int i;
229
230 if (!buf)
231 return -ENOMEM;
232
233
234
235
236 BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
237
238 for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
239 if (test_bit(i, local->hw.flags))
240 pos += scnprintf(pos, end - pos, "%s\n",
241 hw_flag_names[i]);
242 }
243
244 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
245 kfree(buf);
246 return rv;
247}
248
249static ssize_t misc_read(struct file *file, char __user *user_buf,
250 size_t count, loff_t *ppos)
251{
252 struct ieee80211_local *local = file->private_data;
253
254 size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
255 char *buf;
256 char *pos, *end;
257 ssize_t rv;
258 int i;
259 int ln;
260
261 buf = kzalloc(bufsz, GFP_KERNEL);
262 if (!buf)
263 return -ENOMEM;
264
265 pos = buf;
266 end = buf + bufsz - 1;
267
268 pos += scnprintf(pos, end - pos, "pending:\n");
269
270 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
271 ln = skb_queue_len(&local->pending[i]);
272 pos += scnprintf(pos, end - pos, "[%i] %d\n",
273 i, ln);
274 }
275
276 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
277 kfree(buf);
278 return rv;
279}
280
281static ssize_t queues_read(struct file *file, char __user *user_buf,
282 size_t count, loff_t *ppos)
283{
284 struct ieee80211_local *local = file->private_data;
285 unsigned long flags;
286 char buf[IEEE80211_MAX_QUEUES * 20];
287 int q, res = 0;
288
289 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
290 for (q = 0; q < local->hw.queues; q++)
291 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
292 local->queue_stop_reasons[q],
293 skb_queue_len(&local->pending[q]));
294 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
295
296 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
297}
298
299DEBUGFS_READONLY_FILE_OPS(hwflags);
300DEBUGFS_READONLY_FILE_OPS(queues);
301DEBUGFS_READONLY_FILE_OPS(misc);
302
303
304
305static ssize_t format_devstat_counter(struct ieee80211_local *local,
306 char __user *userbuf,
307 size_t count, loff_t *ppos,
308 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
309 int buflen))
310{
311 struct ieee80211_low_level_stats stats;
312 char buf[20];
313 int res;
314
315 rtnl_lock();
316 res = drv_get_stats(local, &stats);
317 rtnl_unlock();
318 if (res)
319 return res;
320 res = printvalue(&stats, buf, sizeof(buf));
321 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
322}
323
324#define DEBUGFS_DEVSTATS_FILE(name) \
325static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
326 char *buf, int buflen) \
327{ \
328 return scnprintf(buf, buflen, "%u\n", stats->name); \
329} \
330static ssize_t stats_ ##name## _read(struct file *file, \
331 char __user *userbuf, \
332 size_t count, loff_t *ppos) \
333{ \
334 return format_devstat_counter(file->private_data, \
335 userbuf, \
336 count, \
337 ppos, \
338 print_devstats_##name); \
339} \
340 \
341static const struct file_operations stats_ ##name## _ops = { \
342 .read = stats_ ##name## _read, \
343 .open = simple_open, \
344 .llseek = generic_file_llseek, \
345};
346
347#define DEBUGFS_STATS_ADD(name) \
348 debugfs_create_u32(#name, 0400, statsd, &local->name);
349#define DEBUGFS_DEVSTATS_ADD(name) \
350 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
351
352DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
353DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
354DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
355DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
356
357void debugfs_hw_add(struct ieee80211_local *local)
358{
359 struct dentry *phyd = local->hw.wiphy->debugfsdir;
360 struct dentry *statsd;
361
362 if (!phyd)
363 return;
364
365 local->debugfs.keys = debugfs_create_dir("keys", phyd);
366
367 DEBUGFS_ADD(total_ps_buffered);
368 DEBUGFS_ADD(wep_iv);
369 DEBUGFS_ADD(rate_ctrl_alg);
370 DEBUGFS_ADD(queues);
371 DEBUGFS_ADD(misc);
372#ifdef CONFIG_PM
373 DEBUGFS_ADD_MODE(reset, 0200);
374#endif
375 DEBUGFS_ADD(hwflags);
376 DEBUGFS_ADD(user_power);
377 DEBUGFS_ADD(power);
378
379 if (local->ops->wake_tx_queue)
380 DEBUGFS_ADD_MODE(aqm, 0600);
381
382 statsd = debugfs_create_dir("statistics", phyd);
383
384
385 if (!statsd)
386 return;
387
388#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
389 DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
390 DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
391 DEBUGFS_STATS_ADD(dot11FailedCount);
392 DEBUGFS_STATS_ADD(dot11RetryCount);
393 DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
394 DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
395 DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
396 DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
397 DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
398 DEBUGFS_STATS_ADD(tx_handlers_drop);
399 DEBUGFS_STATS_ADD(tx_handlers_queued);
400 DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
401 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
402 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
403 DEBUGFS_STATS_ADD(rx_handlers_drop);
404 DEBUGFS_STATS_ADD(rx_handlers_queued);
405 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
406 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
407 DEBUGFS_STATS_ADD(tx_expand_skb_head);
408 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
409 DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
410 DEBUGFS_STATS_ADD(rx_handlers_fragments);
411 DEBUGFS_STATS_ADD(tx_status_drop);
412#endif
413 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
414 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
415 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
416 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
417}
418
