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11#include <linux/debugfs.h>
12#include <linux/rtnetlink.h>
13#include "ieee80211_i.h"
14#include "driver-ops.h"
15#include "rate.h"
16#include "debugfs.h"
17
18#define DEBUGFS_FORMAT_BUFFER_SIZE 100
19
20int mac80211_format_buffer(char __user *userbuf, size_t count,
21 loff_t *ppos, char *fmt, ...)
22{
23 va_list args;
24 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
25 int res;
26
27 va_start(args, fmt);
28 res = vscnprintf(buf, sizeof(buf), fmt, args);
29 va_end(args);
30
31 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
32}
33
34#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
35static ssize_t name## _read(struct file *file, char __user *userbuf, \
36 size_t count, loff_t *ppos) \
37{ \
38 struct ieee80211_local *local = file->private_data; \
39 \
40 return mac80211_format_buffer(userbuf, count, ppos, \
41 fmt "\n", ##value); \
42}
43
44#define DEBUGFS_READONLY_FILE_OPS(name) \
45static const struct file_operations name## _ops = { \
46 .read = name## _read, \
47 .open = simple_open, \
48 .llseek = generic_file_llseek, \
49};
50
51#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
52 DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
53 DEBUGFS_READONLY_FILE_OPS(name)
54
55#define DEBUGFS_ADD(name) \
56 debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
57
58#define DEBUGFS_ADD_MODE(name, mode) \
59 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
60
61
62DEBUGFS_READONLY_FILE(user_power, "%d",
63 local->user_power_level);
64DEBUGFS_READONLY_FILE(power, "%d",
65 local->hw.conf.power_level);
66DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
67 local->total_ps_buffered);
68DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
69 local->wep_iv & 0xffffff);
70DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
71 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
72
73#ifdef CONFIG_PM
74static ssize_t reset_write(struct file *file, const char __user *user_buf,
75 size_t count, loff_t *ppos)
76{
77 struct ieee80211_local *local = file->private_data;
78
79 rtnl_lock();
80 __ieee80211_suspend(&local->hw, NULL);
81 __ieee80211_resume(&local->hw);
82 rtnl_unlock();
83
84 return count;
85}
86
87static const struct file_operations reset_ops = {
88 .write = reset_write,
89 .open = simple_open,
90 .llseek = noop_llseek,
91};
92#endif
93
94static ssize_t hwflags_read(struct file *file, char __user *user_buf,
95 size_t count, loff_t *ppos)
96{
97 struct ieee80211_local *local = file->private_data;
98 int mxln = 500;
99 ssize_t rv;
100 char *buf = kzalloc(mxln, GFP_KERNEL);
101 int sf = 0;
102
103 if (!buf)
104 return 0;
105
106 sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
107 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
108 sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
109 if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
110 sf += snprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n");
111 if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)
112 sf += snprintf(buf + sf, mxln - sf,
113 "HOST_BCAST_PS_BUFFERING\n");
114 if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)
115 sf += snprintf(buf + sf, mxln - sf,
116 "2GHZ_SHORT_SLOT_INCAPABLE\n");
117 if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)
118 sf += snprintf(buf + sf, mxln - sf,
119 "2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
120 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
121 sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
122 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
123 sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
124 if (local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC)
125 sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_BEFORE_ASSOC\n");
126 if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
127 sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
128 if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
129 sf += snprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n");
130 if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS)
131 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n");
132 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
133 sf += snprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n");
134 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
135 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n");
136 if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE)
137 sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n");
138 if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS)
139 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n");
140 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
141 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_SMPS\n");
142 if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
143 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n");
144 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
145 sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS\n");
146 if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
147 sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n");
148 if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)
149 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
150 if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
151 sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
152 if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)
153 sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n");
154
155 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
156 kfree(buf);
157 return rv;
158}
159
160static ssize_t queues_read(struct file *file, char __user *user_buf,
161 size_t count, loff_t *ppos)
162{
163 struct ieee80211_local *local = file->private_data;
164 unsigned long flags;
165 char buf[IEEE80211_MAX_QUEUES * 20];
166 int q, res = 0;
167
168 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
169 for (q = 0; q < local->hw.queues; q++)
170 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
171 local->queue_stop_reasons[q],
172 skb_queue_len(&local->pending[q]));
173 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
174
175 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
176}
177
178DEBUGFS_READONLY_FILE_OPS(hwflags);
179DEBUGFS_READONLY_FILE_OPS(queues);
180
181
182
183static ssize_t format_devstat_counter(struct ieee80211_local *local,
184 char __user *userbuf,
185 size_t count, loff_t *ppos,
186 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
187 int buflen))
188{
189 struct ieee80211_low_level_stats stats;
190 char buf[20];
191 int res;
192
193 rtnl_lock();
194 res = drv_get_stats(local, &stats);
195 rtnl_unlock();
196 if (res)
197 return res;
198 res = printvalue(&stats, buf, sizeof(buf));
199 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
200}
201
202#define DEBUGFS_DEVSTATS_FILE(name) \
203static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
204 char *buf, int buflen) \
205{ \
206 return scnprintf(buf, buflen, "%u\n", stats->name); \
207} \
208static ssize_t stats_ ##name## _read(struct file *file, \
209 char __user *userbuf, \
210 size_t count, loff_t *ppos) \
211{ \
212 return format_devstat_counter(file->private_data, \
213 userbuf, \
214 count, \
215 ppos, \
216 print_devstats_##name); \
217} \
218 \
219static const struct file_operations stats_ ##name## _ops = { \
220 .read = stats_ ##name## _read, \
221 .open = simple_open, \
222 .llseek = generic_file_llseek, \
223};
224
225#define DEBUGFS_STATS_ADD(name, field) \
226 debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
227#define DEBUGFS_DEVSTATS_ADD(name) \
228 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
229
230DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
231DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
232DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
233DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
234
235void debugfs_hw_add(struct ieee80211_local *local)
236{
237 struct dentry *phyd = local->hw.wiphy->debugfsdir;
238 struct dentry *statsd;
239
240 if (!phyd)
241 return;
242
243 local->debugfs.keys = debugfs_create_dir("keys", phyd);
244
245 DEBUGFS_ADD(total_ps_buffered);
246 DEBUGFS_ADD(wep_iv);
247 DEBUGFS_ADD(queues);
248#ifdef CONFIG_PM
249 DEBUGFS_ADD_MODE(reset, 0200);
250#endif
251 DEBUGFS_ADD(hwflags);
252 DEBUGFS_ADD(user_power);
253 DEBUGFS_ADD(power);
254
255 statsd = debugfs_create_dir("statistics", phyd);
256
257
258 if (!statsd)
259 return;
260
261 DEBUGFS_STATS_ADD(transmitted_fragment_count,
262 local->dot11TransmittedFragmentCount);
263 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
264 local->dot11MulticastTransmittedFrameCount);
265 DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
266 DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
267 DEBUGFS_STATS_ADD(multiple_retry_count,
268 local->dot11MultipleRetryCount);
269 DEBUGFS_STATS_ADD(frame_duplicate_count,
270 local->dot11FrameDuplicateCount);
271 DEBUGFS_STATS_ADD(received_fragment_count,
272 local->dot11ReceivedFragmentCount);
273 DEBUGFS_STATS_ADD(multicast_received_frame_count,
274 local->dot11MulticastReceivedFrameCount);
275 DEBUGFS_STATS_ADD(transmitted_frame_count,
276 local->dot11TransmittedFrameCount);
277#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
278 DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
279 DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
280 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
281 local->tx_handlers_drop_unencrypted);
282 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
283 local->tx_handlers_drop_fragment);
284 DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
285 local->tx_handlers_drop_wep);
286 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
287 local->tx_handlers_drop_not_assoc);
288 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
289 local->tx_handlers_drop_unauth_port);
290 DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
291 DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
292 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
293 local->rx_handlers_drop_nullfunc);
294 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
295 local->rx_handlers_drop_defrag);
296 DEBUGFS_STATS_ADD(rx_handlers_drop_short,
297 local->rx_handlers_drop_short);
298 DEBUGFS_STATS_ADD(tx_expand_skb_head,
299 local->tx_expand_skb_head);
300 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
301 local->tx_expand_skb_head_cloned);
302 DEBUGFS_STATS_ADD(rx_expand_skb_head,
303 local->rx_expand_skb_head);
304 DEBUGFS_STATS_ADD(rx_expand_skb_head2,
305 local->rx_expand_skb_head2);
306 DEBUGFS_STATS_ADD(rx_handlers_fragments,
307 local->rx_handlers_fragments);
308 DEBUGFS_STATS_ADD(tx_status_drop,
309 local->tx_status_drop);
310#endif
311 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
312 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
313 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
314 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
315}
316
