diff options
| -rw-r--r-- | net/wireless/core.h | 1 | ||||
| -rw-r--r-- | net/wireless/debugfs.c | 61 |
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 { struct dentry *fragmentation_threshold; struct dentry *short_retry_limit; struct dentry *long_retry_limit; + struct dentry *ht40allow_map; } debugfs; #endif 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", DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", wiphy->retry_long); +static int ht_print_chan(struct ieee80211_channel *chan, + char *buf, int buf_size, int offset) +{ + if (WARN_ON(offset > buf_size)) + return 0; + + if (chan->flags & IEEE80211_CHAN_DISABLED) + return snprintf(buf + offset, + buf_size - offset, + "%d Disabled\n", + chan->center_freq); + + return snprintf(buf + offset, + buf_size - offset, + "%d HT40 %c%c\n", + chan->center_freq, + (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) ? ' ' : '-', + (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) ? ' ' : '+'); +} + +static ssize_t ht40allow_map_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct wiphy *wiphy = file->private_data; + char *buf; + unsigned int offset = 0, buf_size = PAGE_SIZE, i, r; + enum ieee80211_band band; + struct ieee80211_supported_band *sband; + + buf = kzalloc(buf_size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + mutex_lock(&cfg80211_mutex); + + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + sband = wiphy->bands[band]; + if (!sband) + continue; + for (i = 0; i < sband->n_channels; i++) + offset += ht_print_chan(&sband->channels[i], + buf, buf_size, offset); + } + + mutex_unlock(&cfg80211_mutex); + + r = simple_read_from_buffer(user_buf, count, ppos, buf, offset); + + kfree(buf); + + return r; +} + +static const struct file_operations ht40allow_map_ops = { + .read = ht40allow_map_read, + .open = cfg80211_open_file_generic, +}; + #define DEBUGFS_ADD(name) \ drv->debugfs.name = debugfs_create_file(#name, S_IRUGO, phyd, \ &drv->wiphy, &name## _ops); @@ -59,6 +118,7 @@ void cfg80211_debugfs_drv_add(struct cfg80211_registered_device *drv) DEBUGFS_ADD(fragmentation_threshold); DEBUGFS_ADD(short_retry_limit); DEBUGFS_ADD(long_retry_limit); + DEBUGFS_ADD(ht40allow_map); } void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv) @@ -67,4 +127,5 @@ void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv) DEBUGFS_DEL(fragmentation_threshold); DEBUGFS_DEL(short_retry_limit); DEBUGFS_DEL(long_retry_limit); + DEBUGFS_DEL(ht40allow_map); } |