Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1
2/*
3 * mac80211 debugfs for wireless PHYs
4 *
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
6 *
7 * GPLv2
8 *
9 */
10
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; /* how many written so far */
102
103 if (!buf)
104 return 0;
105
106 sf += scnprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
107 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
108 sf += scnprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
109 if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
110 sf += scnprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n");
111 if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)
112 sf += scnprintf(buf + sf, mxln - sf,
113 "HOST_BCAST_PS_BUFFERING\n");
114 if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)
115 sf += scnprintf(buf + sf, mxln - sf,
116 "2GHZ_SHORT_SLOT_INCAPABLE\n");
117 if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)
118 sf += scnprintf(buf + sf, mxln - sf,
119 "2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
120 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
121 sf += scnprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
122 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
123 sf += scnprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
124 if (local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC)
125 sf += scnprintf(buf + sf, mxln - sf,
126 "NEED_DTIM_BEFORE_ASSOC\n");
127 if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
128 sf += scnprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
129 if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
130 sf += scnprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n");
131 if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS)
132 sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n");
133 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
134 sf += scnprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n");
135 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
136 sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n");
137 if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE)
138 sf += scnprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n");
139 if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS)
140 sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n");
141 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
142 sf += scnprintf(buf + sf, mxln - sf,
143 "SUPPORTS_DYNAMIC_SMPS\n");
144 if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
145 sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n");
146 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
147 sf += scnprintf(buf + sf, mxln - sf,
148 "REPORTS_TX_ACK_STATUS\n");
149 if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
150 sf += scnprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n");
151 if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)
152 sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
153 if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
154 sf += scnprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
155 if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)
156 sf += scnprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n");
157
158 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
159 kfree(buf);
160 return rv;
161}
162
163static ssize_t queues_read(struct file *file, char __user *user_buf,
164 size_t count, loff_t *ppos)
165{
166 struct ieee80211_local *local = file->private_data;
167 unsigned long flags;
168 char buf[IEEE80211_MAX_QUEUES * 20];
169 int q, res = 0;
170
171 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
172 for (q = 0; q < local->hw.queues; q++)
173 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
174 local->queue_stop_reasons[q],
175 skb_queue_len(&local->pending[q]));
176 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
177
178 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
179}
180
181DEBUGFS_READONLY_FILE_OPS(hwflags);
182DEBUGFS_READONLY_FILE_OPS(queues);
183
184/* statistics stuff */
185
186static ssize_t format_devstat_counter(struct ieee80211_local *local,
187 char __user *userbuf,
188 size_t count, loff_t *ppos,
189 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
190 int buflen))
191{
192 struct ieee80211_low_level_stats stats;
193 char buf[20];
194 int res;
195
196 rtnl_lock();
197 res = drv_get_stats(local, &stats);
198 rtnl_unlock();
199 if (res)
200 return res;
201 res = printvalue(&stats, buf, sizeof(buf));
202 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
203}
204
205#define DEBUGFS_DEVSTATS_FILE(name) \
206static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
207 char *buf, int buflen) \
208{ \
209 return scnprintf(buf, buflen, "%u\n", stats->name); \
210} \
211static ssize_t stats_ ##name## _read(struct file *file, \
212 char __user *userbuf, \
213 size_t count, loff_t *ppos) \
214{ \
215 return format_devstat_counter(file->private_data, \
216 userbuf, \
217 count, \
218 ppos, \
219 print_devstats_##name); \
220} \
221 \
222static const struct file_operations stats_ ##name## _ops = { \
223 .read = stats_ ##name## _read, \
224 .open = simple_open, \
225 .llseek = generic_file_llseek, \
226};
227
228#define DEBUGFS_STATS_ADD(name, field) \
229 debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
230#define DEBUGFS_DEVSTATS_ADD(name) \
231 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
232
233DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
234DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
235DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
236DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
237
238void 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.keys = debugfs_create_dir("keys", phyd);
247
248 DEBUGFS_ADD(total_ps_buffered);
249 DEBUGFS_ADD(wep_iv);
250 DEBUGFS_ADD(queues);
251#ifdef CONFIG_PM
252 DEBUGFS_ADD_MODE(reset, 0200);
253#endif
254 DEBUGFS_ADD(hwflags);
255 DEBUGFS_ADD(user_power);
256 DEBUGFS_ADD(power);
257
258 statsd = debugfs_create_dir("statistics", phyd);
259
260 /* if the dir failed, don't put all the other things into the root! */
261 if (!statsd)
262 return;
263
264 DEBUGFS_STATS_ADD(transmitted_fragment_count,
265 local->dot11TransmittedFragmentCount);
266 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
267 local->dot11MulticastTransmittedFrameCount);
268 DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
269 DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
270 DEBUGFS_STATS_ADD(multiple_retry_count,
271 local->dot11MultipleRetryCount);
272 DEBUGFS_STATS_ADD(frame_duplicate_count,
273 local->dot11FrameDuplicateCount);
274 DEBUGFS_STATS_ADD(received_fragment_count,
275 local->dot11ReceivedFragmentCount);
276 DEBUGFS_STATS_ADD(multicast_received_frame_count,
277 local->dot11MulticastReceivedFrameCount);
278 DEBUGFS_STATS_ADD(transmitted_frame_count,
279 local->dot11TransmittedFrameCount);
280#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
281 DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
282 DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
283 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
284 local->tx_handlers_drop_unencrypted);
285 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
286 local->tx_handlers_drop_fragment);
287 DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
288 local->tx_handlers_drop_wep);
289 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
290 local->tx_handlers_drop_not_assoc);
291 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
292 local->tx_handlers_drop_unauth_port);
293 DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
294 DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
295 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
296 local->rx_handlers_drop_nullfunc);
297 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
298 local->rx_handlers_drop_defrag);
299 DEBUGFS_STATS_ADD(rx_handlers_drop_short,
300 local->rx_handlers_drop_short);
301 DEBUGFS_STATS_ADD(tx_expand_skb_head,
302 local->tx_expand_skb_head);
303 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
304 local->tx_expand_skb_head_cloned);
305 DEBUGFS_STATS_ADD(rx_expand_skb_head,
306 local->rx_expand_skb_head);
307 DEBUGFS_STATS_ADD(rx_expand_skb_head2,
308 local->rx_expand_skb_head2);
309 DEBUGFS_STATS_ADD(rx_handlers_fragments,
310 local->rx_handlers_fragments);
311 DEBUGFS_STATS_ADD(tx_status_drop,
312 local->tx_status_drop);
313#endif
314 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
315 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
316 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
317 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
318}