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Commit 5ae212c9 authored by Zhu Yi's avatar Zhu Yi Committed by David S. Miller
Browse files

[PATCH] iwlwifi: add read rate scale table debugfs function 



This patch adds read rate scale table debugfs function for 4965
rate scaling module.

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 93dc646a

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

+61 −6
Original line number Diff line number Diff line
@@ -121,6 +121,9 @@ struct iwl_rate_scale_priv { 
	u16 active_rate_basic;

	struct iwl_link_quality_cmd lq;

	struct iwl_scale_tbl_info lq_info[LQ_SIZE];

#ifdef CONFIG_MAC80211_DEBUGFS

       struct dentry *rs_sta_dbgfs_scale_table_file;

#endif

};



static void rs_rate_scale_perform(struct iwl_priv *priv,
@@ -2000,19 +2003,71 @@ static void rs_free_sta(void *priv, void *priv_sta) 




#ifdef CONFIG_MAC80211_DEBUGFS

static int open_file_generic(struct inode *inode, struct file *file)

{

	file->private_data = inode->i_private;

	return 0;

}



static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,

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

{

	char buff[1024];

	int desc = 0;

	int i = 0;



	struct iwl_rate_scale_priv *rs_priv = file->private_data;



	desc += sprintf(buff+desc, "sta_id %d\n", rs_priv->lq.sta_id);

	desc += sprintf(buff+desc, "failed=%d success=%d rate=%X\n",

			rs_priv->total_failed, rs_priv->total_success,

			rs_priv->active_rate);

	desc += sprintf(buff+desc, "general:"

		"flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n",

		rs_priv->lq.general_params.flags,

		rs_priv->lq.general_params.mimo_delimiter,

		rs_priv->lq.general_params.single_stream_ant_msk,

		rs_priv->lq.general_params.dual_stream_ant_msk);



	desc += sprintf(buff+desc, "agg:"

			"time_limit=%d dist_start_th=%d frame_cnt_limit=%d\n",

			le16_to_cpu(rs_priv->lq.agg_params.agg_time_limit),

			rs_priv->lq.agg_params.agg_dis_start_th,

			rs_priv->lq.agg_params.agg_frame_cnt_limit);



	desc += sprintf(buff+desc,

			"Start idx [0]=0x%x [1]=0x%x [2]=0x%x [3]=0x%x\n",

			rs_priv->lq.general_params.start_rate_index[0],

			rs_priv->lq.general_params.start_rate_index[1],

			rs_priv->lq.general_params.start_rate_index[2],

			rs_priv->lq.general_params.start_rate_index[3]);





	for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)

		desc += sprintf(buff+desc, " rate[%d] 0x%X\n",

			i, le32_to_cpu(rs_priv->lq.rs_table[i].rate_n_flags));



	return simple_read_from_buffer(user_buf, count, ppos, buff, desc);

}



static const struct file_operations rs_sta_dbgfs_scale_table_ops = {

	.read = rs_sta_dbgfs_scale_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; */

	IWL_DEBUG_RATE("%s enter\n", __FUNCTION__);

	IWL_DEBUG_RATE("%s leave\n", __FUNCTION__);

	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,

				rs_priv, &rs_sta_dbgfs_scale_table_ops);

}



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

{

	/* struct iwl_rate_scale_priv *rs_priv = priv_sta; */

	IWL_DEBUG_RATE("%s enter\n", __FUNCTION__);

	IWL_DEBUG_RATE("%s leave\n", __FUNCTION__);

	struct iwl_rate_scale_priv *rs_priv = priv_sta;

	debugfs_remove(rs_priv->rs_sta_dbgfs_scale_table_file);

}

#endif