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Commit 0209dc11 authored by Zhu Yi's avatar Zhu Yi Committed by David S. Miller
Browse files

[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: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 98d7e09a

drivers/net/wireless/iwlwifi/iwl-4965-rs.c

+39 −1
Original line number Original line Diff line number Diff line
@@ -124,6 +124,7 @@ struct iwl_rate_scale_priv { 
	struct iwl_scale_tbl_info lq_info[LQ_SIZE];

	struct iwl_scale_tbl_info lq_info[LQ_SIZE];

#ifdef CONFIG_MAC80211_DEBUGFS

#ifdef CONFIG_MAC80211_DEBUGFS

	struct dentry *rs_sta_dbgfs_scale_table_file;

	struct dentry *rs_sta_dbgfs_scale_table_file;

	struct dentry *rs_sta_dbgfs_stats_table_file;

	struct iwl_rate dbg_fixed;

	struct iwl_rate dbg_fixed;

	struct iwl_priv *drv;

	struct iwl_priv *drv;

#endif

#endif
@@ -2068,6 +2069,7 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file, 




	return count;

	return count;

}

}



static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,

static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,

			char __user *user_buf, size_t count, loff_t *ppos)

			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,

	.read = rs_sta_dbgfs_scale_table_read,

	.open = open_file_generic,

	.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,

static void rs_add_debugfs(void *priv, void *priv_sta,

					struct dentry *dir)

					struct dentry *dir)

{

{

	struct iwl_rate_scale_priv *rs_priv = priv_sta;

	struct iwl_rate_scale_priv *rs_priv = priv_sta;

	rs_priv->rs_sta_dbgfs_scale_table_file =

	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_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)

static void rs_remove_debugfs(void *priv, void *priv_sta)

{

{

	struct iwl_rate_scale_priv *rs_priv = 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_scale_table_file);

	debugfs_remove(rs_priv->rs_sta_dbgfs_stats_table_file);

}

}

#endif

#endif