From 199d69f27326858b16449eb1cc1623299db64415 Mon Sep 17 00:00:00 2001 From: Benoit Papillault Date: Thu, 4 Feb 2010 22:00:20 +0100 Subject: [PATCH] mac80211: Added a new debugfs file for reading channel_type This file helps debugging HT channels since it displays if we are on ht20 or ht40+/ht40- Signed-off-by: Benoit Papillault Signed-off-by: John W. Linville --- net/mac80211/debugfs.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index b3bc32b62a5a..637929b65ccc 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -250,6 +250,38 @@ static const struct file_operations uapsd_max_sp_len_ops = { .open = mac80211_open_file_generic }; +static ssize_t channel_type_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + const char *buf; + + switch (local->hw.conf.channel_type) { + case NL80211_CHAN_NO_HT: + buf = "no ht\n"; + break; + case NL80211_CHAN_HT20: + buf = "ht20\n"; + break; + case NL80211_CHAN_HT40MINUS: + buf = "ht40-\n"; + break; + case NL80211_CHAN_HT40PLUS: + buf = "ht40+\n"; + break; + default: + buf = "???"; + break; + } + + return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); +} + +static const struct file_operations channel_type_ops = { + .read = channel_type_read, + .open = mac80211_open_file_generic +}; + static ssize_t queues_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { @@ -408,6 +440,7 @@ void debugfs_hw_add(struct ieee80211_local *local) DEBUGFS_ADD(noack); DEBUGFS_ADD(uapsd_queues); DEBUGFS_ADD(uapsd_max_sp_len); + DEBUGFS_ADD(channel_type); statsd = debugfs_create_dir("statistics", phyd);