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Commit | Line | Data |
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e9f207f0 JB |
1 | /* |
2 | * mac80211 debugfs for wireless PHYs | |
3 | * | |
4 | * Copyright 2007 Johannes Berg <[email protected]> | |
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> | |
13 | #include "ieee80211_i.h" | |
24487981 | 14 | #include "driver-ops.h" |
2c8dccc7 | 15 | #include "rate.h" |
e9f207f0 JB |
16 | #include "debugfs.h" |
17 | ||
07caf9d6 EP |
18 | #define DEBUGFS_FORMAT_BUFFER_SIZE 100 |
19 | ||
20 | int 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 | ||
279daf64 | 34 | #define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \ |
e9f207f0 JB |
35 | static 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; \ | |
e9f207f0 | 39 | \ |
07caf9d6 EP |
40 | return mac80211_format_buffer(userbuf, count, ppos, \ |
41 | fmt "\n", ##value); \ | |
279daf64 BG |
42 | } |
43 | ||
44 | #define DEBUGFS_READONLY_FILE_OPS(name) \ | |
e9f207f0 JB |
45 | static const struct file_operations name## _ops = { \ |
46 | .read = name## _read, \ | |
234e3405 | 47 | .open = simple_open, \ |
2b18ab36 | 48 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
49 | }; |
50 | ||
279daf64 BG |
51 | #define DEBUGFS_READONLY_FILE(name, fmt, value...) \ |
52 | DEBUGFS_READONLY_FILE_FN(name, fmt, value) \ | |
53 | DEBUGFS_READONLY_FILE_OPS(name) | |
54 | ||
e9f207f0 | 55 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 56 | debugfs_create_file(#name, 0400, phyd, local, &name## _ops); |
e9f207f0 | 57 | |
827b1fb4 | 58 | #define DEBUGFS_ADD_MODE(name, mode) \ |
7bcfaf2f | 59 | debugfs_create_file(#name, mode, phyd, local, &name## _ops); |
e9f207f0 JB |
60 | |
61 | ||
83bdf2a1 BG |
62 | DEBUGFS_READONLY_FILE(user_power, "%d", |
63 | local->user_power_level); | |
64 | DEBUGFS_READONLY_FILE(power, "%d", | |
65 | local->hw.conf.power_level); | |
07caf9d6 | 66 | DEBUGFS_READONLY_FILE(total_ps_buffered, "%d", |
e9f207f0 | 67 | local->total_ps_buffered); |
07caf9d6 | 68 | DEBUGFS_READONLY_FILE(wep_iv, "%#08x", |
e9f207f0 | 69 | local->wep_iv & 0xffffff); |
07caf9d6 | 70 | DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s", |
af65cd96 | 71 | local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver"); |
3b5d665b | 72 | |
2ad4814f | 73 | #ifdef CONFIG_PM |
827b1fb4 JB |
74 | static 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(); | |
eecc4800 | 80 | __ieee80211_suspend(&local->hw, NULL); |
827b1fb4 JB |
81 | __ieee80211_resume(&local->hw); |
82 | rtnl_unlock(); | |
83 | ||
84 | return count; | |
85 | } | |
86 | ||
87 | static const struct file_operations reset_ops = { | |
88 | .write = reset_write, | |
234e3405 | 89 | .open = simple_open, |
6038f373 | 90 | .llseek = noop_llseek, |
827b1fb4 | 91 | }; |
2ad4814f | 92 | #endif |
827b1fb4 | 93 | |
30686bf7 JB |
94 | static const char *hw_flag_names[NUM_IEEE80211_HW_FLAGS + 1] = { |
95 | #define FLAG(F) [IEEE80211_HW_##F] = #F | |
96 | FLAG(HAS_RATE_CONTROL), | |
97 | FLAG(RX_INCLUDES_FCS), | |
98 | FLAG(HOST_BROADCAST_PS_BUFFERING), | |
99 | FLAG(SIGNAL_UNSPEC), | |
100 | FLAG(SIGNAL_DBM), | |
101 | FLAG(NEED_DTIM_BEFORE_ASSOC), | |
102 | FLAG(SPECTRUM_MGMT), | |
103 | FLAG(AMPDU_AGGREGATION), | |
104 | FLAG(SUPPORTS_PS), | |
105 | FLAG(PS_NULLFUNC_STACK), | |
106 | FLAG(SUPPORTS_DYNAMIC_PS), | |
107 | FLAG(MFP_CAPABLE), | |
108 | FLAG(WANT_MONITOR_VIF), | |
109 | FLAG(NO_AUTO_VIF), | |
110 | FLAG(SW_CRYPTO_CONTROL), | |
111 | FLAG(SUPPORT_FAST_XMIT), | |
112 | FLAG(REPORTS_TX_ACK_STATUS), | |
113 | FLAG(CONNECTION_MONITOR), | |
114 | FLAG(QUEUE_CONTROL), | |
115 | FLAG(SUPPORTS_PER_STA_GTK), | |
116 | FLAG(AP_LINK_PS), | |
117 | FLAG(TX_AMPDU_SETUP_IN_HW), | |
118 | FLAG(SUPPORTS_RC_TABLE), | |
119 | FLAG(P2P_DEV_ADDR_FOR_INTF), | |
120 | FLAG(TIMING_BEACON_ONLY), | |
121 | FLAG(SUPPORTS_HT_CCK_RATES), | |
122 | FLAG(CHANCTX_STA_CSA), | |
123 | FLAG(SUPPORTS_CLONED_SKBS), | |
124 | FLAG(SINGLE_SCAN_ON_ALL_BANDS), | |
b98fb44f | 125 | FLAG(TDLS_WIDER_BW), |
99e7ca44 | 126 | FLAG(SUPPORTS_AMSDU_IN_AMPDU), |
30686bf7 JB |
127 | |
128 | /* keep last for the build bug below */ | |
129 | (void *)0x1 | |
130 | #undef FLAG | |
131 | }; | |
132 | ||
279daf64 BG |
133 | static ssize_t hwflags_read(struct file *file, char __user *user_buf, |
134 | size_t count, loff_t *ppos) | |
135 | { | |
136 | struct ieee80211_local *local = file->private_data; | |
30686bf7 JB |
137 | size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS; |
138 | char *buf = kzalloc(bufsz, GFP_KERNEL); | |
139 | char *pos = buf, *end = buf + bufsz - 1; | |
279daf64 | 140 | ssize_t rv; |
30686bf7 | 141 | int i; |
279daf64 | 142 | |
d15b8459 | 143 | if (!buf) |
30686bf7 JB |
144 | return -ENOMEM; |
145 | ||
146 | /* fail compilation if somebody adds or removes | |
147 | * a flag without updating the name array above | |
148 | */ | |
149 | BUILD_BUG_ON(hw_flag_names[NUM_IEEE80211_HW_FLAGS] != (void *)0x1); | |
150 | ||
151 | for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) { | |
152 | if (test_bit(i, local->hw.flags)) | |
153 | pos += scnprintf(pos, end - pos, "%s", | |
154 | hw_flag_names[i]); | |
155 | } | |
279daf64 BG |
156 | |
157 | rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); | |
158 | kfree(buf); | |
159 | return rv; | |
160 | } | |
199d69f2 | 161 | |
db2e6bd4 JB |
162 | static ssize_t queues_read(struct file *file, char __user *user_buf, |
163 | size_t count, loff_t *ppos) | |
164 | { | |
165 | struct ieee80211_local *local = file->private_data; | |
166 | unsigned long flags; | |
167 | char buf[IEEE80211_MAX_QUEUES * 20]; | |
168 | int q, res = 0; | |
169 | ||
170 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
171 | for (q = 0; q < local->hw.queues; q++) | |
172 | res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, | |
173 | local->queue_stop_reasons[q], | |
3b8d81e0 | 174 | skb_queue_len(&local->pending[q])); |
db2e6bd4 JB |
175 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
176 | ||
177 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
178 | } | |
179 | ||
279daf64 | 180 | DEBUGFS_READONLY_FILE_OPS(hwflags); |
279daf64 | 181 | DEBUGFS_READONLY_FILE_OPS(queues); |
db2e6bd4 | 182 | |
e9f207f0 JB |
183 | /* statistics stuff */ |
184 | ||
e9f207f0 JB |
185 | static ssize_t format_devstat_counter(struct ieee80211_local *local, |
186 | char __user *userbuf, | |
187 | size_t count, loff_t *ppos, | |
188 | int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, | |
189 | int buflen)) | |
190 | { | |
191 | struct ieee80211_low_level_stats stats; | |
192 | char buf[20]; | |
193 | int res; | |
194 | ||
75636525 | 195 | rtnl_lock(); |
24487981 | 196 | res = drv_get_stats(local, &stats); |
e9f207f0 | 197 | rtnl_unlock(); |
24487981 JB |
198 | if (res) |
199 | return res; | |
200 | res = printvalue(&stats, buf, sizeof(buf)); | |
e9f207f0 JB |
201 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
202 | } | |
203 | ||
204 | #define DEBUGFS_DEVSTATS_FILE(name) \ | |
205 | static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ | |
206 | char *buf, int buflen) \ | |
207 | { \ | |
208 | return scnprintf(buf, buflen, "%u\n", stats->name); \ | |
209 | } \ | |
210 | static ssize_t stats_ ##name## _read(struct file *file, \ | |
211 | char __user *userbuf, \ | |
212 | size_t count, loff_t *ppos) \ | |
213 | { \ | |
214 | return format_devstat_counter(file->private_data, \ | |
215 | userbuf, \ | |
216 | count, \ | |
217 | ppos, \ | |
218 | print_devstats_##name); \ | |
219 | } \ | |
220 | \ | |
221 | static const struct file_operations stats_ ##name## _ops = { \ | |
222 | .read = stats_ ##name## _read, \ | |
234e3405 | 223 | .open = simple_open, \ |
2b18ab36 | 224 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
225 | }; |
226 | ||
f1160434 JB |
227 | #define DEBUGFS_STATS_ADD(name) \ |
228 | debugfs_create_u32(#name, 0400, statsd, &local->name); | |
2826bcd8 | 229 | #define DEBUGFS_DEVSTATS_ADD(name) \ |
7bcfaf2f | 230 | debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); |
e9f207f0 | 231 | |
e9f207f0 JB |
232 | DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); |
233 | DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); | |
234 | DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); | |
235 | DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); | |
236 | ||
e9f207f0 JB |
237 | void debugfs_hw_add(struct ieee80211_local *local) |
238 | { | |
239 | struct dentry *phyd = local->hw.wiphy->debugfsdir; | |
240 | struct dentry *statsd; | |
241 | ||
242 | if (!phyd) | |
243 | return; | |
244 | ||
e9f207f0 JB |
245 | local->debugfs.keys = debugfs_create_dir("keys", phyd); |
246 | ||
e9f207f0 | 247 | DEBUGFS_ADD(total_ps_buffered); |
e9f207f0 | 248 | DEBUGFS_ADD(wep_iv); |
db2e6bd4 | 249 | DEBUGFS_ADD(queues); |
2ad4814f | 250 | #ifdef CONFIG_PM |
827b1fb4 | 251 | DEBUGFS_ADD_MODE(reset, 0200); |
2ad4814f | 252 | #endif |
279daf64 | 253 | DEBUGFS_ADD(hwflags); |
83bdf2a1 BG |
254 | DEBUGFS_ADD(user_power); |
255 | DEBUGFS_ADD(power); | |
e9f207f0 JB |
256 | |
257 | statsd = debugfs_create_dir("statistics", phyd); | |
e9f207f0 JB |
258 | |
259 | /* if the dir failed, don't put all the other things into the root! */ | |
260 | if (!statsd) | |
261 | return; | |
262 | ||
c206ca67 | 263 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
f1160434 JB |
264 | DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount); |
265 | DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount); | |
266 | DEBUGFS_STATS_ADD(dot11FailedCount); | |
267 | DEBUGFS_STATS_ADD(dot11RetryCount); | |
268 | DEBUGFS_STATS_ADD(dot11MultipleRetryCount); | |
269 | DEBUGFS_STATS_ADD(dot11FrameDuplicateCount); | |
270 | DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount); | |
271 | DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount); | |
272 | DEBUGFS_STATS_ADD(dot11TransmittedFrameCount); | |
f1160434 JB |
273 | DEBUGFS_STATS_ADD(tx_handlers_drop); |
274 | DEBUGFS_STATS_ADD(tx_handlers_queued); | |
275 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep); | |
276 | DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); | |
277 | DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); | |
278 | DEBUGFS_STATS_ADD(rx_handlers_drop); | |
279 | DEBUGFS_STATS_ADD(rx_handlers_queued); | |
280 | DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); | |
281 | DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); | |
f1160434 JB |
282 | DEBUGFS_STATS_ADD(tx_expand_skb_head); |
283 | DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); | |
284 | DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag); | |
285 | DEBUGFS_STATS_ADD(rx_handlers_fragments); | |
286 | DEBUGFS_STATS_ADD(tx_status_drop); | |
e9f207f0 | 287 | #endif |
2826bcd8 FF |
288 | DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); |
289 | DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); | |
290 | DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); | |
291 | DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); | |
e9f207f0 | 292 | } |