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iwlagn: show current rate scale data in debugfs 

Add "rate_scale_data" debugfs file to show current bit rate (HT and Legacy),
plus additional information (rssi, noise, tsf, beacon time stamp).

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy 2009-05-08 13:44:43 -07:00 committed by John W. Linville
parent fff7a4346c
commit 38167459da
1 changed files with 42 additions and 0 deletions
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42
drivers/net/wireless/iwlwifi/iwl-agn-rs.c
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@ -161,6 +161,7 @@ struct iwl_lq_sta {
#ifdef CONFIG_MAC80211_DEBUGFS
struct dentry *rs_sta_dbgfs_scale_table_file;
struct dentry *rs_sta_dbgfs_stats_table_file;
struct dentry *rs_sta_dbgfs_rate_scale_data_file;
struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file;
u32 dbg_fixed_rate;
#endif
@ -2984,6 +2985,43 @@ static const struct file_operations rs_sta_dbgfs_stats_table_ops = {
.open = open_file_generic,
};
static ssize_t rs_sta_dbgfs_rate_scale_data_read(struct file *file,
char __user *user_buf, size_t count, loff_t *ppos)
{
char buff[120];
int desc = 0;
ssize_t ret;
struct iwl_lq_sta *lq_sta = file->private_data;
struct iwl_priv *priv;
struct iwl_scale_tbl_info *tbl = &lq_sta->lq_info[lq_sta->active_tbl];
priv = lq_sta->drv;
if (is_Ht(tbl->lq_type))
desc += sprintf(buff+desc,
"Bit Rate= %d Mb/s\n",
tbl->expected_tpt[lq_sta->last_txrate_idx]);
else
desc += sprintf(buff+desc,
"Bit Rate= %d Mb/s\n",
iwl_rates[lq_sta->last_txrate_idx].ieee >> 1);
desc += sprintf(buff+desc,
"Signal Level= %d dBm\tNoise Level= %d dBm\n",
priv->last_rx_rssi, priv->last_rx_noise);
desc += sprintf(buff+desc,
"Tsf= 0x%llx\tBeacon time= 0x%08X\n",
priv->last_tsf, priv->last_beacon_time);
ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc);
return ret;
}
static const struct file_operations rs_sta_dbgfs_rate_scale_data_ops = {
.read = rs_sta_dbgfs_rate_scale_data_read,
.open = open_file_generic,
};
static void rs_add_debugfs(void *priv, void *priv_sta,
struct dentry *dir)
{
@ -2994,6 +3032,9 @@ static void rs_add_debugfs(void *priv, void *priv_sta,
lq_sta->rs_sta_dbgfs_stats_table_file =
debugfs_create_file("rate_stats_table", 0600, dir,
lq_sta, &rs_sta_dbgfs_stats_table_ops);
lq_sta->rs_sta_dbgfs_rate_scale_data_file =
debugfs_create_file("rate_scale_data", 0600, dir,
lq_sta, &rs_sta_dbgfs_rate_scale_data_ops);
lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file =
debugfs_create_u8("tx_agg_tid_enable", 0600, dir,
&lq_sta->tx_agg_tid_en);
@ -3005,6 +3046,7 @@ static void rs_remove_debugfs(void *priv, void *priv_sta)
struct iwl_lq_sta *lq_sta = priv_sta;
debugfs_remove(lq_sta->rs_sta_dbgfs_scale_table_file);
debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file);
debugfs_remove(lq_sta->rs_sta_dbgfs_rate_scale_data_file);
debugfs_remove(lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file);
}
#endif