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authorLuis R. Rodriguez <lrodriguez@atheros.com>2009-05-02 00:39:30 -0400
committerJohn W. Linville <linville@tuxdriver.com>2009-05-20 14:46:23 -0400
commit80a3511d70e8fc7ed3fe4417d7b0bf6c3f642f64 (patch)
treedf35f2640eea3e9b7772dcfd112eba98379bb390 /net/wireless
parent1ac61302dcd18880e28c29e5728cd4d0efeb5366 (diff)
cfg80211: add debugfs HT40 allow map
Here's a screenshot of what this looks like with ath9k: mcgrof@pogo /debug/ieee80211/phy0 $ cat ht40allow_map 2412 HT40 + 2417 HT40 + 2422 HT40 + 2427 HT40 + 2432 HT40 -+ 2437 HT40 -+ 2442 HT40 -+ 2447 HT40 - 2452 HT40 - 2457 HT40 - 2462 HT40 - 2467 Disabled 2472 Disabled 2484 Disabled 5180 HT40 + 5200 HT40 -+ 5220 HT40 -+ 5240 HT40 -+ 5260 HT40 -+ 5280 HT40 -+ 5300 HT40 -+ 5320 HT40 - 5500 HT40 + 5520 HT40 -+ 5540 HT40 -+ 5560 HT40 -+ 5580 HT40 -+ 5600 HT40 -+ 5620 HT40 -+ 5640 HT40 -+ 5660 HT40 -+ 5680 HT40 -+ 5700 HT40 - 5745 HT40 + 5765 HT40 -+ 5785 HT40 -+ 5805 HT40 -+ 5825 HT40 - Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/core.h1
-rw-r--r--net/wireless/debugfs.c61
2 files changed, 62 insertions, 0 deletions
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 930a80124dbf..88f234c8f6b3 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -58,6 +58,7 @@ struct cfg80211_registered_device {
58 struct dentry *fragmentation_threshold; 58 struct dentry *fragmentation_threshold;
59 struct dentry *short_retry_limit; 59 struct dentry *short_retry_limit;
60 struct dentry *long_retry_limit; 60 struct dentry *long_retry_limit;
61 struct dentry *ht40allow_map;
61 } debugfs; 62 } debugfs;
62#endif 63#endif
63 64
diff --git a/net/wireless/debugfs.c b/net/wireless/debugfs.c
index 3211e0e9fe4c..679ddfcec1ee 100644
--- a/net/wireless/debugfs.c
+++ b/net/wireless/debugfs.c
@@ -44,6 +44,65 @@ DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
44DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", 44DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
45 wiphy->retry_long); 45 wiphy->retry_long);
46 46
47static int ht_print_chan(struct ieee80211_channel *chan,
48 char *buf, int buf_size, int offset)
49{
50 if (WARN_ON(offset > buf_size))
51 return 0;
52
53 if (chan->flags & IEEE80211_CHAN_DISABLED)
54 return snprintf(buf + offset,
55 buf_size - offset,
56 "%d Disabled\n",
57 chan->center_freq);
58
59 return snprintf(buf + offset,
60 buf_size - offset,
61 "%d HT40 %c%c\n",
62 chan->center_freq,
63 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) ? ' ' : '-',
64 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) ? ' ' : '+');
65}
66
67static ssize_t ht40allow_map_read(struct file *file,
68 char __user *user_buf,
69 size_t count, loff_t *ppos)
70{
71 struct wiphy *wiphy = file->private_data;
72 char *buf;
73 unsigned int offset = 0, buf_size = PAGE_SIZE, i, r;
74 enum ieee80211_band band;
75 struct ieee80211_supported_band *sband;
76
77 buf = kzalloc(buf_size, GFP_KERNEL);
78 if (!buf)
79 return -ENOMEM;
80
81 mutex_lock(&cfg80211_mutex);
82
83 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
84 sband = wiphy->bands[band];
85 if (!sband)
86 continue;
87 for (i = 0; i < sband->n_channels; i++)
88 offset += ht_print_chan(&sband->channels[i],
89 buf, buf_size, offset);
90 }
91
92 mutex_unlock(&cfg80211_mutex);
93
94 r = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
95
96 kfree(buf);
97
98 return r;
99}
100
101static const struct file_operations ht40allow_map_ops = {
102 .read = ht40allow_map_read,
103 .open = cfg80211_open_file_generic,
104};
105
47#define DEBUGFS_ADD(name) \ 106#define DEBUGFS_ADD(name) \
48 drv->debugfs.name = debugfs_create_file(#name, S_IRUGO, phyd, \ 107 drv->debugfs.name = debugfs_create_file(#name, S_IRUGO, phyd, \
49 &drv->wiphy, &name## _ops); 108 &drv->wiphy, &name## _ops);
@@ -59,6 +118,7 @@ void cfg80211_debugfs_drv_add(struct cfg80211_registered_device *drv)
59 DEBUGFS_ADD(fragmentation_threshold); 118 DEBUGFS_ADD(fragmentation_threshold);
60 DEBUGFS_ADD(short_retry_limit); 119 DEBUGFS_ADD(short_retry_limit);
61 DEBUGFS_ADD(long_retry_limit); 120 DEBUGFS_ADD(long_retry_limit);
121 DEBUGFS_ADD(ht40allow_map);
62} 122}
63 123
64void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv) 124void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv)
@@ -67,4 +127,5 @@ void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv)
67 DEBUGFS_DEL(fragmentation_threshold); 127 DEBUGFS_DEL(fragmentation_threshold);
68 DEBUGFS_DEL(short_retry_limit); 128 DEBUGFS_DEL(short_retry_limit);
69 DEBUGFS_DEL(long_retry_limit); 129 DEBUGFS_DEL(long_retry_limit);
130 DEBUGFS_DEL(ht40allow_map);
70} 131}