Commit | Line | Data |
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1ac61302 LR |
1 | /* |
2 | * cfg80211 debugfs | |
3 | * | |
4 | * Copyright 2009 Luis R. Rodriguez <lrodriguez@atheros.com> | |
5 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
5a0e3ad6 | 12 | #include <linux/slab.h> |
1ac61302 LR |
13 | #include "core.h" |
14 | #include "debugfs.h" | |
15 | ||
1ac61302 LR |
16 | #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \ |
17 | static ssize_t name## _read(struct file *file, char __user *userbuf, \ | |
18 | size_t count, loff_t *ppos) \ | |
19 | { \ | |
20 | struct wiphy *wiphy= file->private_data; \ | |
21 | char buf[buflen]; \ | |
22 | int res; \ | |
23 | \ | |
24 | res = scnprintf(buf, buflen, fmt "\n", ##value); \ | |
25 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ | |
26 | } \ | |
27 | \ | |
28 | static const struct file_operations name## _ops = { \ | |
29 | .read = name## _read, \ | |
234e3405 | 30 | .open = simple_open, \ |
2b18ab36 | 31 | .llseek = generic_file_llseek, \ |
1ac61302 LR |
32 | }; |
33 | ||
34 | DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d", | |
35 | wiphy->rts_threshold) | |
36 | DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d", | |
37 | wiphy->frag_threshold); | |
38 | DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d", | |
39 | wiphy->retry_short) | |
40 | DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", | |
41 | wiphy->retry_long); | |
42 | ||
80a3511d LR |
43 | static int ht_print_chan(struct ieee80211_channel *chan, |
44 | char *buf, int buf_size, int offset) | |
45 | { | |
46 | if (WARN_ON(offset > buf_size)) | |
47 | return 0; | |
48 | ||
49 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
50 | return snprintf(buf + offset, | |
51 | buf_size - offset, | |
52 | "%d Disabled\n", | |
53 | chan->center_freq); | |
54 | ||
55 | return snprintf(buf + offset, | |
56 | buf_size - offset, | |
57 | "%d HT40 %c%c\n", | |
58 | chan->center_freq, | |
59 | (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) ? ' ' : '-', | |
60 | (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) ? ' ' : '+'); | |
61 | } | |
62 | ||
63 | static ssize_t ht40allow_map_read(struct file *file, | |
64 | char __user *user_buf, | |
65 | size_t count, loff_t *ppos) | |
66 | { | |
67 | struct wiphy *wiphy = file->private_data; | |
68 | char *buf; | |
69 | unsigned int offset = 0, buf_size = PAGE_SIZE, i, r; | |
70 | enum ieee80211_band band; | |
71 | struct ieee80211_supported_band *sband; | |
72 | ||
73 | buf = kzalloc(buf_size, GFP_KERNEL); | |
74 | if (!buf) | |
75 | return -ENOMEM; | |
76 | ||
77 | mutex_lock(&cfg80211_mutex); | |
78 | ||
79 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
80 | sband = wiphy->bands[band]; | |
81 | if (!sband) | |
82 | continue; | |
83 | for (i = 0; i < sband->n_channels; i++) | |
84 | offset += ht_print_chan(&sband->channels[i], | |
85 | buf, buf_size, offset); | |
86 | } | |
87 | ||
88 | mutex_unlock(&cfg80211_mutex); | |
89 | ||
90 | r = simple_read_from_buffer(user_buf, count, ppos, buf, offset); | |
91 | ||
92 | kfree(buf); | |
93 | ||
94 | return r; | |
95 | } | |
96 | ||
97 | static const struct file_operations ht40allow_map_ops = { | |
98 | .read = ht40allow_map_read, | |
234e3405 | 99 | .open = simple_open, |
6038f373 | 100 | .llseek = default_llseek, |
80a3511d LR |
101 | }; |
102 | ||
1ac61302 | 103 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 104 | debugfs_create_file(#name, S_IRUGO, phyd, &rdev->wiphy, &name## _ops); |
1ac61302 | 105 | |
79c97e97 | 106 | void cfg80211_debugfs_rdev_add(struct cfg80211_registered_device *rdev) |
1ac61302 | 107 | { |
79c97e97 | 108 | struct dentry *phyd = rdev->wiphy.debugfsdir; |
1ac61302 LR |
109 | |
110 | DEBUGFS_ADD(rts_threshold); | |
111 | DEBUGFS_ADD(fragmentation_threshold); | |
112 | DEBUGFS_ADD(short_retry_limit); | |
113 | DEBUGFS_ADD(long_retry_limit); | |
80a3511d | 114 | DEBUGFS_ADD(ht40allow_map); |
1ac61302 | 115 | } |