Commit | Line | Data |
---|---|---|
7bcfaf2f | 1 | |
e9f207f0 JB |
2 | /* |
3 | * mac80211 debugfs for wireless PHYs | |
4 | * | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
d98ad83e | 6 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
e9f207f0 JB |
7 | * |
8 | * GPLv2 | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/debugfs.h> | |
13 | #include <linux/rtnetlink.h> | |
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 | |
2ad4814f | 74 | #ifdef CONFIG_PM |
827b1fb4 JB |
75 | static ssize_t reset_write(struct file *file, const char __user *user_buf, |
76 | size_t count, loff_t *ppos) | |
77 | { | |
78 | struct ieee80211_local *local = file->private_data; | |
79 | ||
80 | rtnl_lock(); | |
eecc4800 | 81 | __ieee80211_suspend(&local->hw, NULL); |
827b1fb4 JB |
82 | __ieee80211_resume(&local->hw); |
83 | rtnl_unlock(); | |
84 | ||
85 | return count; | |
86 | } | |
87 | ||
88 | static const struct file_operations reset_ops = { | |
89 | .write = reset_write, | |
234e3405 | 90 | .open = simple_open, |
6038f373 | 91 | .llseek = noop_llseek, |
827b1fb4 | 92 | }; |
2ad4814f | 93 | #endif |
827b1fb4 | 94 | |
279daf64 BG |
95 | static ssize_t hwflags_read(struct file *file, char __user *user_buf, |
96 | size_t count, loff_t *ppos) | |
97 | { | |
98 | struct ieee80211_local *local = file->private_data; | |
99 | int mxln = 500; | |
100 | ssize_t rv; | |
101 | char *buf = kzalloc(mxln, GFP_KERNEL); | |
102 | int sf = 0; /* how many written so far */ | |
103 | ||
d15b8459 JP |
104 | if (!buf) |
105 | return 0; | |
106 | ||
f364ef99 | 107 | sf += scnprintf(buf, mxln - sf, "0x%x\n", local->hw.flags); |
279daf64 | 108 | if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) |
f364ef99 | 109 | sf += scnprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n"); |
279daf64 | 110 | if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) |
f364ef99 | 111 | sf += scnprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n"); |
279daf64 | 112 | if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) |
f364ef99 EP |
113 | sf += scnprintf(buf + sf, mxln - sf, |
114 | "HOST_BCAST_PS_BUFFERING\n"); | |
279daf64 | 115 | if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE) |
f364ef99 EP |
116 | sf += scnprintf(buf + sf, mxln - sf, |
117 | "2GHZ_SHORT_SLOT_INCAPABLE\n"); | |
279daf64 | 118 | if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE) |
f364ef99 EP |
119 | sf += scnprintf(buf + sf, mxln - sf, |
120 | "2GHZ_SHORT_PREAMBLE_INCAPABLE\n"); | |
279daf64 | 121 | if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) |
f364ef99 | 122 | sf += scnprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n"); |
279daf64 | 123 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
f364ef99 | 124 | sf += scnprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n"); |
c65dd147 | 125 | if (local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC) |
f364ef99 EP |
126 | sf += scnprintf(buf + sf, mxln - sf, |
127 | "NEED_DTIM_BEFORE_ASSOC\n"); | |
279daf64 | 128 | if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT) |
f364ef99 | 129 | sf += scnprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n"); |
279daf64 | 130 | if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION) |
f364ef99 | 131 | sf += scnprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n"); |
279daf64 | 132 | if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS) |
f364ef99 | 133 | sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n"); |
279daf64 | 134 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) |
f364ef99 | 135 | sf += scnprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n"); |
279daf64 | 136 | if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) |
f364ef99 | 137 | sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n"); |
279daf64 | 138 | if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE) |
f364ef99 | 139 | sf += scnprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n"); |
279daf64 | 140 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
f364ef99 EP |
141 | sf += scnprintf(buf + sf, mxln - sf, |
142 | "REPORTS_TX_ACK_STATUS\n"); | |
279daf64 | 143 | if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
f364ef99 | 144 | sf += scnprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n"); |
279daf64 | 145 | if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK) |
f364ef99 | 146 | sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n"); |
279daf64 | 147 | if (local->hw.flags & IEEE80211_HW_AP_LINK_PS) |
f364ef99 | 148 | sf += scnprintf(buf + sf, mxln - sf, "AP_LINK_PS\n"); |
edf6b784 | 149 | if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW) |
f364ef99 | 150 | sf += scnprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n"); |
279daf64 BG |
151 | |
152 | rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); | |
153 | kfree(buf); | |
154 | return rv; | |
155 | } | |
199d69f2 | 156 | |
db2e6bd4 JB |
157 | static ssize_t queues_read(struct file *file, char __user *user_buf, |
158 | size_t count, loff_t *ppos) | |
159 | { | |
160 | struct ieee80211_local *local = file->private_data; | |
161 | unsigned long flags; | |
162 | char buf[IEEE80211_MAX_QUEUES * 20]; | |
163 | int q, res = 0; | |
164 | ||
165 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
166 | for (q = 0; q < local->hw.queues; q++) | |
167 | res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, | |
168 | local->queue_stop_reasons[q], | |
3b8d81e0 | 169 | skb_queue_len(&local->pending[q])); |
db2e6bd4 JB |
170 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
171 | ||
172 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
173 | } | |
174 | ||
279daf64 | 175 | DEBUGFS_READONLY_FILE_OPS(hwflags); |
279daf64 | 176 | DEBUGFS_READONLY_FILE_OPS(queues); |
db2e6bd4 | 177 | |
e9f207f0 JB |
178 | /* statistics stuff */ |
179 | ||
e9f207f0 JB |
180 | static ssize_t format_devstat_counter(struct ieee80211_local *local, |
181 | char __user *userbuf, | |
182 | size_t count, loff_t *ppos, | |
183 | int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, | |
184 | int buflen)) | |
185 | { | |
186 | struct ieee80211_low_level_stats stats; | |
187 | char buf[20]; | |
188 | int res; | |
189 | ||
75636525 | 190 | rtnl_lock(); |
24487981 | 191 | res = drv_get_stats(local, &stats); |
e9f207f0 | 192 | rtnl_unlock(); |
24487981 JB |
193 | if (res) |
194 | return res; | |
195 | res = printvalue(&stats, buf, sizeof(buf)); | |
e9f207f0 JB |
196 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
197 | } | |
198 | ||
199 | #define DEBUGFS_DEVSTATS_FILE(name) \ | |
200 | static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ | |
201 | char *buf, int buflen) \ | |
202 | { \ | |
203 | return scnprintf(buf, buflen, "%u\n", stats->name); \ | |
204 | } \ | |
205 | static ssize_t stats_ ##name## _read(struct file *file, \ | |
206 | char __user *userbuf, \ | |
207 | size_t count, loff_t *ppos) \ | |
208 | { \ | |
209 | return format_devstat_counter(file->private_data, \ | |
210 | userbuf, \ | |
211 | count, \ | |
212 | ppos, \ | |
213 | print_devstats_##name); \ | |
214 | } \ | |
215 | \ | |
216 | static const struct file_operations stats_ ##name## _ops = { \ | |
217 | .read = stats_ ##name## _read, \ | |
234e3405 | 218 | .open = simple_open, \ |
2b18ab36 | 219 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
220 | }; |
221 | ||
2826bcd8 FF |
222 | #define DEBUGFS_STATS_ADD(name, field) \ |
223 | debugfs_create_u32(#name, 0400, statsd, (u32 *) &field); | |
224 | #define DEBUGFS_DEVSTATS_ADD(name) \ | |
7bcfaf2f | 225 | debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); |
e9f207f0 | 226 | |
e9f207f0 JB |
227 | DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); |
228 | DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); | |
229 | DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); | |
230 | DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); | |
231 | ||
e9f207f0 JB |
232 | void debugfs_hw_add(struct ieee80211_local *local) |
233 | { | |
234 | struct dentry *phyd = local->hw.wiphy->debugfsdir; | |
235 | struct dentry *statsd; | |
236 | ||
237 | if (!phyd) | |
238 | return; | |
239 | ||
e9f207f0 JB |
240 | local->debugfs.keys = debugfs_create_dir("keys", phyd); |
241 | ||
e9f207f0 | 242 | DEBUGFS_ADD(total_ps_buffered); |
e9f207f0 | 243 | DEBUGFS_ADD(wep_iv); |
db2e6bd4 | 244 | DEBUGFS_ADD(queues); |
2ad4814f | 245 | #ifdef CONFIG_PM |
827b1fb4 | 246 | DEBUGFS_ADD_MODE(reset, 0200); |
2ad4814f | 247 | #endif |
279daf64 | 248 | DEBUGFS_ADD(hwflags); |
83bdf2a1 BG |
249 | DEBUGFS_ADD(user_power); |
250 | DEBUGFS_ADD(power); | |
e9f207f0 JB |
251 | |
252 | statsd = debugfs_create_dir("statistics", phyd); | |
e9f207f0 JB |
253 | |
254 | /* if the dir failed, don't put all the other things into the root! */ | |
255 | if (!statsd) | |
256 | return; | |
257 | ||
2826bcd8 FF |
258 | DEBUGFS_STATS_ADD(transmitted_fragment_count, |
259 | local->dot11TransmittedFragmentCount); | |
260 | DEBUGFS_STATS_ADD(multicast_transmitted_frame_count, | |
261 | local->dot11MulticastTransmittedFrameCount); | |
262 | DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount); | |
263 | DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount); | |
264 | DEBUGFS_STATS_ADD(multiple_retry_count, | |
265 | local->dot11MultipleRetryCount); | |
266 | DEBUGFS_STATS_ADD(frame_duplicate_count, | |
267 | local->dot11FrameDuplicateCount); | |
268 | DEBUGFS_STATS_ADD(received_fragment_count, | |
269 | local->dot11ReceivedFragmentCount); | |
270 | DEBUGFS_STATS_ADD(multicast_received_frame_count, | |
271 | local->dot11MulticastReceivedFrameCount); | |
272 | DEBUGFS_STATS_ADD(transmitted_frame_count, | |
273 | local->dot11TransmittedFrameCount); | |
e9f207f0 | 274 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
2826bcd8 FF |
275 | DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop); |
276 | DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued); | |
2826bcd8 FF |
277 | DEBUGFS_STATS_ADD(tx_handlers_drop_fragment, |
278 | local->tx_handlers_drop_fragment); | |
279 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep, | |
280 | local->tx_handlers_drop_wep); | |
281 | DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc, | |
282 | local->tx_handlers_drop_not_assoc); | |
283 | DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port, | |
284 | local->tx_handlers_drop_unauth_port); | |
285 | DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop); | |
286 | DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued); | |
287 | DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc, | |
288 | local->rx_handlers_drop_nullfunc); | |
289 | DEBUGFS_STATS_ADD(rx_handlers_drop_defrag, | |
290 | local->rx_handlers_drop_defrag); | |
291 | DEBUGFS_STATS_ADD(rx_handlers_drop_short, | |
292 | local->rx_handlers_drop_short); | |
2826bcd8 FF |
293 | DEBUGFS_STATS_ADD(tx_expand_skb_head, |
294 | local->tx_expand_skb_head); | |
295 | DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned, | |
296 | local->tx_expand_skb_head_cloned); | |
297 | DEBUGFS_STATS_ADD(rx_expand_skb_head, | |
298 | local->rx_expand_skb_head); | |
299 | DEBUGFS_STATS_ADD(rx_expand_skb_head2, | |
300 | local->rx_expand_skb_head2); | |
301 | DEBUGFS_STATS_ADD(rx_handlers_fragments, | |
302 | local->rx_handlers_fragments); | |
303 | DEBUGFS_STATS_ADD(tx_status_drop, | |
304 | local->tx_status_drop); | |
e9f207f0 | 305 | #endif |
2826bcd8 FF |
306 | DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); |
307 | DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); | |
308 | DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); | |
309 | DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); | |
e9f207f0 | 310 | } |