Commit | Line | Data |
---|---|---|
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 | { \ | |
b699b71d | 20 | struct wiphy *wiphy = file->private_data; \ |
1ac61302 LR |
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, \ |
b699b71d | 32 | } |
1ac61302 LR |
33 | |
34 | DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d", | |
b699b71d | 35 | wiphy->rts_threshold); |
1ac61302 LR |
36 | DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d", |
37 | wiphy->frag_threshold); | |
38 | DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d", | |
b699b71d | 39 | wiphy->retry_short); |
1ac61302 LR |
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) | |
f364ef99 EP |
50 | return scnprintf(buf + offset, |
51 | buf_size - offset, | |
52 | "%d Disabled\n", | |
53 | chan->center_freq); | |
80a3511d | 54 | |
f364ef99 EP |
55 | return scnprintf(buf + offset, |
56 | buf_size - offset, | |
57 | "%d HT40 %c%c\n", | |
58 | chan->center_freq, | |
59 | (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) ? | |
60 | ' ' : '-', | |
61 | (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) ? | |
62 | ' ' : '+'); | |
80a3511d LR |
63 | } |
64 | ||
65 | static ssize_t ht40allow_map_read(struct file *file, | |
66 | char __user *user_buf, | |
67 | size_t count, loff_t *ppos) | |
68 | { | |
69 | struct wiphy *wiphy = file->private_data; | |
70 | char *buf; | |
71 | unsigned int offset = 0, buf_size = PAGE_SIZE, i, r; | |
57fbcce3 | 72 | enum nl80211_band band; |
80a3511d LR |
73 | struct ieee80211_supported_band *sband; |
74 | ||
75 | buf = kzalloc(buf_size, GFP_KERNEL); | |
76 | if (!buf) | |
77 | return -ENOMEM; | |
78 | ||
5fe231e8 | 79 | rtnl_lock(); |
80a3511d | 80 | |
57fbcce3 | 81 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
80a3511d LR |
82 | sband = wiphy->bands[band]; |
83 | if (!sband) | |
84 | continue; | |
85 | for (i = 0; i < sband->n_channels; i++) | |
86 | offset += ht_print_chan(&sband->channels[i], | |
87 | buf, buf_size, offset); | |
88 | } | |
89 | ||
5fe231e8 | 90 | rtnl_unlock(); |
80a3511d LR |
91 | |
92 | r = simple_read_from_buffer(user_buf, count, ppos, buf, offset); | |
93 | ||
94 | kfree(buf); | |
95 | ||
96 | return r; | |
97 | } | |
98 | ||
99 | static const struct file_operations ht40allow_map_ops = { | |
100 | .read = ht40allow_map_read, | |
234e3405 | 101 | .open = simple_open, |
6038f373 | 102 | .llseek = default_llseek, |
80a3511d LR |
103 | }; |
104 | ||
1ac61302 | 105 | #define DEBUGFS_ADD(name) \ |
b699b71d | 106 | debugfs_create_file(#name, 0444, phyd, &rdev->wiphy, &name## _ops) |
1ac61302 | 107 | |
79c97e97 | 108 | void cfg80211_debugfs_rdev_add(struct cfg80211_registered_device *rdev) |
1ac61302 | 109 | { |
79c97e97 | 110 | struct dentry *phyd = rdev->wiphy.debugfsdir; |
1ac61302 LR |
111 | |
112 | DEBUGFS_ADD(rts_threshold); | |
113 | DEBUGFS_ADD(fragmentation_threshold); | |
114 | DEBUGFS_ADD(short_retry_limit); | |
115 | DEBUGFS_ADD(long_retry_limit); | |
80a3511d | 116 | DEBUGFS_ADD(ht40allow_map); |
1ac61302 | 117 | } |