diff options
Diffstat (limited to 'net/mac80211/debugfs.c')
-rw-r--r-- | net/mac80211/debugfs.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index eeb0bbd69d98..23813ebb349c 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c | |||
@@ -18,172 +18,6 @@ | |||
18 | 18 | ||
19 | #define DEBUGFS_FORMAT_BUFFER_SIZE 100 | 19 | #define DEBUGFS_FORMAT_BUFFER_SIZE 100 |
20 | 20 | ||
21 | #define TX_LATENCY_BIN_DELIMTER_C ',' | ||
22 | #define TX_LATENCY_BIN_DELIMTER_S "," | ||
23 | #define TX_LATENCY_BINS_DISABLED "enable(bins disabled)\n" | ||
24 | #define TX_LATENCY_DISABLED "disable\n" | ||
25 | |||
26 | |||
27 | /* | ||
28 | * Display if Tx latency statistics & bins are enabled/disabled | ||
29 | */ | ||
30 | static ssize_t sta_tx_latency_stat_read(struct file *file, | ||
31 | char __user *userbuf, | ||
32 | size_t count, loff_t *ppos) | ||
33 | { | ||
34 | struct ieee80211_local *local = file->private_data; | ||
35 | struct ieee80211_tx_latency_bin_ranges *tx_latency; | ||
36 | char *buf; | ||
37 | int bufsz, i, ret; | ||
38 | int pos = 0; | ||
39 | |||
40 | rcu_read_lock(); | ||
41 | |||
42 | tx_latency = rcu_dereference(local->tx_latency); | ||
43 | |||
44 | if (tx_latency && tx_latency->n_ranges) { | ||
45 | bufsz = tx_latency->n_ranges * 15; | ||
46 | buf = kzalloc(bufsz, GFP_ATOMIC); | ||
47 | if (!buf) | ||
48 | goto err; | ||
49 | |||
50 | for (i = 0; i < tx_latency->n_ranges; i++) | ||
51 | pos += scnprintf(buf + pos, bufsz - pos, "%d,", | ||
52 | tx_latency->ranges[i]); | ||
53 | pos += scnprintf(buf + pos, bufsz - pos, "\n"); | ||
54 | } else if (tx_latency) { | ||
55 | bufsz = sizeof(TX_LATENCY_BINS_DISABLED) + 1; | ||
56 | buf = kzalloc(bufsz, GFP_ATOMIC); | ||
57 | if (!buf) | ||
58 | goto err; | ||
59 | |||
60 | pos += scnprintf(buf + pos, bufsz - pos, "%s\n", | ||
61 | TX_LATENCY_BINS_DISABLED); | ||
62 | } else { | ||
63 | bufsz = sizeof(TX_LATENCY_DISABLED) + 1; | ||
64 | buf = kzalloc(bufsz, GFP_ATOMIC); | ||
65 | if (!buf) | ||
66 | goto err; | ||
67 | |||
68 | pos += scnprintf(buf + pos, bufsz - pos, "%s\n", | ||
69 | TX_LATENCY_DISABLED); | ||
70 | } | ||
71 | |||
72 | rcu_read_unlock(); | ||
73 | |||
74 | ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); | ||
75 | kfree(buf); | ||
76 | |||
77 | return ret; | ||
78 | err: | ||
79 | rcu_read_unlock(); | ||
80 | return -ENOMEM; | ||
81 | } | ||
82 | |||
83 | /* | ||
84 | * Receive input from user regarding Tx latency statistics | ||
85 | * The input should indicate if Tx latency statistics and bins are | ||
86 | * enabled/disabled. | ||
87 | * If bins are enabled input should indicate the amount of different bins and | ||
88 | * their ranges. Each bin will count how many Tx frames transmitted within the | ||
89 | * appropriate latency. | ||
90 | * Legal input is: | ||
91 | * a) "enable(bins disabled)" - to enable only general statistics | ||
92 | * b) "a,b,c,d,...z" - to enable general statistics and bins, where all are | ||
93 | * numbers and a < b < c < d.. < z | ||
94 | * c) "disable" - disable all statistics | ||
95 | * NOTE: must configure Tx latency statistics bins before stations connected. | ||
96 | */ | ||
97 | |||
98 | static ssize_t sta_tx_latency_stat_write(struct file *file, | ||
99 | const char __user *userbuf, | ||
100 | size_t count, loff_t *ppos) | ||
101 | { | ||
102 | struct ieee80211_local *local = file->private_data; | ||
103 | char buf[128] = {}; | ||
104 | char *bins = buf; | ||
105 | char *token; | ||
106 | int buf_size, i, alloc_size; | ||
107 | int prev_bin = 0; | ||
108 | int n_ranges = 0; | ||
109 | int ret = count; | ||
110 | struct ieee80211_tx_latency_bin_ranges *tx_latency; | ||
111 | |||
112 | if (sizeof(buf) <= count) | ||
113 | return -EINVAL; | ||
114 | buf_size = count; | ||
115 | if (copy_from_user(buf, userbuf, buf_size)) | ||
116 | return -EFAULT; | ||
117 | |||
118 | mutex_lock(&local->sta_mtx); | ||
119 | |||
120 | /* cannot change config once we have stations */ | ||
121 | if (local->num_sta) | ||
122 | goto unlock; | ||
123 | |||
124 | tx_latency = | ||
125 | rcu_dereference_protected(local->tx_latency, | ||
126 | lockdep_is_held(&local->sta_mtx)); | ||
127 | |||
128 | /* disable Tx statistics */ | ||
129 | if (!strcmp(buf, TX_LATENCY_DISABLED)) { | ||
130 | if (!tx_latency) | ||
131 | goto unlock; | ||
132 | RCU_INIT_POINTER(local->tx_latency, NULL); | ||
133 | synchronize_rcu(); | ||
134 | kfree(tx_latency); | ||
135 | goto unlock; | ||
136 | } | ||
137 | |||
138 | /* Tx latency already enabled */ | ||
139 | if (tx_latency) | ||
140 | goto unlock; | ||
141 | |||
142 | if (strcmp(TX_LATENCY_BINS_DISABLED, buf)) { | ||
143 | /* check how many bins and between what ranges user requested */ | ||
144 | token = buf; | ||
145 | while (*token != '\0') { | ||
146 | if (*token == TX_LATENCY_BIN_DELIMTER_C) | ||
147 | n_ranges++; | ||
148 | token++; | ||
149 | } | ||
150 | n_ranges++; | ||
151 | } | ||
152 | |||
153 | alloc_size = sizeof(struct ieee80211_tx_latency_bin_ranges) + | ||
154 | n_ranges * sizeof(u32); | ||
155 | tx_latency = kzalloc(alloc_size, GFP_ATOMIC); | ||
156 | if (!tx_latency) { | ||
157 | ret = -ENOMEM; | ||
158 | goto unlock; | ||
159 | } | ||
160 | tx_latency->n_ranges = n_ranges; | ||
161 | for (i = 0; i < n_ranges; i++) { /* setting bin ranges */ | ||
162 | token = strsep(&bins, TX_LATENCY_BIN_DELIMTER_S); | ||
163 | sscanf(token, "%d", &tx_latency->ranges[i]); | ||
164 | /* bins values should be in ascending order */ | ||
165 | if (prev_bin >= tx_latency->ranges[i]) { | ||
166 | ret = -EINVAL; | ||
167 | kfree(tx_latency); | ||
168 | goto unlock; | ||
169 | } | ||
170 | prev_bin = tx_latency->ranges[i]; | ||
171 | } | ||
172 | rcu_assign_pointer(local->tx_latency, tx_latency); | ||
173 | |||
174 | unlock: | ||
175 | mutex_unlock(&local->sta_mtx); | ||
176 | |||
177 | return ret; | ||
178 | } | ||
179 | |||
180 | static const struct file_operations stats_tx_latency_ops = { | ||
181 | .write = sta_tx_latency_stat_write, | ||
182 | .read = sta_tx_latency_stat_read, | ||
183 | .open = simple_open, | ||
184 | .llseek = generic_file_llseek, | ||
185 | }; | ||
186 | |||
187 | int mac80211_format_buffer(char __user *userbuf, size_t count, | 21 | int mac80211_format_buffer(char __user *userbuf, size_t count, |
188 | loff_t *ppos, char *fmt, ...) | 22 | loff_t *ppos, char *fmt, ...) |
189 | { | 23 | { |
@@ -440,8 +274,6 @@ void debugfs_hw_add(struct ieee80211_local *local) | |||
440 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | 274 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
441 | DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop); | 275 | DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop); |
442 | DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued); | 276 | DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued); |
443 | DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted, | ||
444 | local->tx_handlers_drop_unencrypted); | ||
445 | DEBUGFS_STATS_ADD(tx_handlers_drop_fragment, | 277 | DEBUGFS_STATS_ADD(tx_handlers_drop_fragment, |
446 | local->tx_handlers_drop_fragment); | 278 | local->tx_handlers_drop_fragment); |
447 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep, | 279 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep, |
@@ -475,6 +307,4 @@ void debugfs_hw_add(struct ieee80211_local *local) | |||
475 | DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); | 307 | DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); |
476 | DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); | 308 | DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); |
477 | DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); | 309 | DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); |
478 | |||
479 | DEBUGFS_DEVSTATS_ADD(tx_latency); | ||
480 | } | 310 | } |