Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 38167459 authored by Wey-Yi Guy's avatar Wey-Yi Guy Committed by John W. Linville
Browse files

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: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent fff7a434

drivers/net/wireless/iwlwifi/iwl-agn-rs.c

+42 −0
Original line number Diff line number Diff line
@@ -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