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[PATCH] iwlwifi: add debugfs rate scale stats

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This patch adds rates scale statistics to debugfs:
$ cat /sys/kernel/debug/ieee80211/phy<X>/stations/<mac>/rate_stats_table

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Zhu Yi 2007-09-27 11:27:43 +08:00 committed by David S. Miller
parent 98d7e09af5
commit 0209dc11c7
1 changed files with 39 additions and 1 deletions
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40
drivers/net/wireless/iwlwifi/iwl-4965-rs.c
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@ -124,6 +124,7 @@ struct iwl_rate_scale_priv {
struct iwl_scale_tbl_info lq_info[LQ_SIZE];
#ifdef CONFIG_MAC80211_DEBUGFS
struct dentry *rs_sta_dbgfs_scale_table_file;
struct dentry *rs_sta_dbgfs_stats_table_file;
struct iwl_rate dbg_fixed;
struct iwl_priv *drv;
#endif
@ -2068,6 +2069,7 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file,
return count;
}
static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
char __user *user_buf, size_t count, loff_t *ppos)
{
@ -2116,20 +2118,56 @@ static const struct file_operations rs_sta_dbgfs_scale_table_ops = {
.read = rs_sta_dbgfs_scale_table_read,
.open = open_file_generic,
};
static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file,
char __user *user_buf, size_t count, loff_t *ppos)
{
char buff[1024];
int desc = 0;
int i, j;
struct iwl_rate_scale_priv *rs_priv = file->private_data;
for (i = 0; i < LQ_SIZE; i++) {
desc += sprintf(buff+desc, "%s type=%d SGI=%d FAT=%d DUP=%d\n"
"rate=0x%X\n",
rs_priv->active_tbl == i?"*":"x",
rs_priv->lq_info[i].lq_type,
rs_priv->lq_info[i].is_SGI,
rs_priv->lq_info[i].is_fat,
rs_priv->lq_info[i].is_dup,
rs_priv->lq_info[i].current_rate.rate_n_flags);
for (j = 0; j < IWL_RATE_COUNT; j++) {
desc += sprintf(buff+desc,
"counter=%d success=%d %%=%d\n",
rs_priv->lq_info[i].win[j].counter,
rs_priv->lq_info[i].win[j].success_counter,
rs_priv->lq_info[i].win[j].success_ratio);
}
}
return simple_read_from_buffer(user_buf, count, ppos, buff, desc);
}
static const struct file_operations rs_sta_dbgfs_stats_table_ops = {
.read = rs_sta_dbgfs_stats_table_read,
.open = open_file_generic,
};
static void rs_add_debugfs(void *priv, void *priv_sta,
struct dentry *dir)
{
struct iwl_rate_scale_priv *rs_priv = priv_sta;
rs_priv->rs_sta_dbgfs_scale_table_file =
debugfs_create_file("rate_scale_table", 0444, dir,
debugfs_create_file("rate_scale_table", 0600, dir,
rs_priv, &rs_sta_dbgfs_scale_table_ops);
rs_priv->rs_sta_dbgfs_stats_table_file =
debugfs_create_file("rate_stats_table", 0600, dir,
rs_priv, &rs_sta_dbgfs_stats_table_ops);
}
static void rs_remove_debugfs(void *priv, void *priv_sta)
{
struct iwl_rate_scale_priv *rs_priv = priv_sta;
debugfs_remove(rs_priv->rs_sta_dbgfs_scale_table_file);
debugfs_remove(rs_priv->rs_sta_dbgfs_stats_table_file);
}
#endif