[PATCH] iwlwifi: add debugfs rate scale stats
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>
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@ -124,6 +124,7 @@ struct iwl_rate_scale_priv {
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struct iwl_scale_tbl_info lq_info[LQ_SIZE];
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struct iwl_scale_tbl_info lq_info[LQ_SIZE];
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#ifdef CONFIG_MAC80211_DEBUGFS
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#ifdef CONFIG_MAC80211_DEBUGFS
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struct dentry *rs_sta_dbgfs_scale_table_file;
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struct dentry *rs_sta_dbgfs_scale_table_file;
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struct dentry *rs_sta_dbgfs_stats_table_file;
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struct iwl_rate dbg_fixed;
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struct iwl_rate dbg_fixed;
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struct iwl_priv *drv;
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struct iwl_priv *drv;
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#endif
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#endif
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@ -2068,6 +2069,7 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file,
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return count;
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return count;
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}
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}
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static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
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static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
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char __user *user_buf, size_t count, loff_t *ppos)
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char __user *user_buf, size_t count, loff_t *ppos)
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{
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{
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@ -2116,20 +2118,56 @@ static const struct file_operations rs_sta_dbgfs_scale_table_ops = {
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.read = rs_sta_dbgfs_scale_table_read,
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.read = rs_sta_dbgfs_scale_table_read,
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.open = open_file_generic,
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.open = open_file_generic,
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};
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};
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static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file,
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char __user *user_buf, size_t count, loff_t *ppos)
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{
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char buff[1024];
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int desc = 0;
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int i, j;
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struct iwl_rate_scale_priv *rs_priv = file->private_data;
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for (i = 0; i < LQ_SIZE; i++) {
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desc += sprintf(buff+desc, "%s type=%d SGI=%d FAT=%d DUP=%d\n"
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"rate=0x%X\n",
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rs_priv->active_tbl == i?"*":"x",
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rs_priv->lq_info[i].lq_type,
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rs_priv->lq_info[i].is_SGI,
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rs_priv->lq_info[i].is_fat,
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rs_priv->lq_info[i].is_dup,
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rs_priv->lq_info[i].current_rate.rate_n_flags);
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for (j = 0; j < IWL_RATE_COUNT; j++) {
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desc += sprintf(buff+desc,
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"counter=%d success=%d %%=%d\n",
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rs_priv->lq_info[i].win[j].counter,
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rs_priv->lq_info[i].win[j].success_counter,
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rs_priv->lq_info[i].win[j].success_ratio);
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}
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}
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return simple_read_from_buffer(user_buf, count, ppos, buff, desc);
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}
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static const struct file_operations rs_sta_dbgfs_stats_table_ops = {
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.read = rs_sta_dbgfs_stats_table_read,
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.open = open_file_generic,
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};
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static void rs_add_debugfs(void *priv, void *priv_sta,
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static void rs_add_debugfs(void *priv, void *priv_sta,
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struct dentry *dir)
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struct dentry *dir)
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{
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{
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struct iwl_rate_scale_priv *rs_priv = priv_sta;
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struct iwl_rate_scale_priv *rs_priv = priv_sta;
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rs_priv->rs_sta_dbgfs_scale_table_file =
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rs_priv->rs_sta_dbgfs_scale_table_file =
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debugfs_create_file("rate_scale_table", 0444, dir,
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debugfs_create_file("rate_scale_table", 0600, dir,
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rs_priv, &rs_sta_dbgfs_scale_table_ops);
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rs_priv, &rs_sta_dbgfs_scale_table_ops);
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rs_priv->rs_sta_dbgfs_stats_table_file =
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debugfs_create_file("rate_stats_table", 0600, dir,
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rs_priv, &rs_sta_dbgfs_stats_table_ops);
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}
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}
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static void rs_remove_debugfs(void *priv, void *priv_sta)
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static void rs_remove_debugfs(void *priv, void *priv_sta)
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{
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{
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struct iwl_rate_scale_priv *rs_priv = priv_sta;
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struct iwl_rate_scale_priv *rs_priv = priv_sta;
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debugfs_remove(rs_priv->rs_sta_dbgfs_scale_table_file);
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debugfs_remove(rs_priv->rs_sta_dbgfs_scale_table_file);
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debugfs_remove(rs_priv->rs_sta_dbgfs_stats_table_file);
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}
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}
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#endif
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#endif
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