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[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: 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 11:27:38 +08:00 committed by David S. Miller
parent 93dc646adb
commit 5ae212c927
1 changed files with 61 additions and 6 deletions
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67
drivers/net/wireless/iwlwifi/iwl-4965-rs.c
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@ -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