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Commit c30e30e1 authored by Abbas, Mohamed's avatar Abbas, Mohamed Committed by John W. Linville
Browse files

iwl3945: add debugfs support 



Add debugfs support to 3945 driver to display rs info.

Signed-off-by: default avatarMohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent d366df5a

drivers/net/wireless/iwlwifi/iwl-3945-rs.c

+62 −0
Original line number Diff line number Diff line
@@ -63,6 +63,9 @@ struct iwl3945_rs_sta { 
	u8 ibss_sta_added;

	struct timer_list rate_scale_flush;

	struct iwl3945_rate_scale_data win[IWL_RATE_COUNT];

#ifdef CONFIG_MAC80211_DEBUGFS

	struct dentry *rs_sta_dbgfs_stats_table_file;

#endif



	/* used to be in sta_info */

	int last_txrate_idx;
@@ -772,6 +775,60 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta, 
	IWL_DEBUG_RATE("leave: %d\n", index);

}



#ifdef CONFIG_MAC80211_DEBUGFS

static int iwl3945_open_file_generic(struct inode *inode, struct file *file)

{

	file->private_data = inode->i_private;

	return 0;

}



static ssize_t iwl3945_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 j;

	struct iwl3945_rs_sta *lq_sta = file->private_data;



	desc += sprintf(buff + desc, "tx packets=%d last rate index=%d\n"

			"rate=0x%X flush time %d\n",

			lq_sta->tx_packets,

			lq_sta->last_txrate_idx,

			lq_sta->start_rate, jiffies_to_msecs(lq_sta->flush_time));

	for (j = 0; j < IWL_RATE_COUNT; j++) {

		desc += sprintf(buff+desc,

				"counter=%d success=%d %%=%d\n",

				lq_sta->win[j].counter,

				lq_sta->win[j].success_counter,

				lq_sta->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 = iwl3945_sta_dbgfs_stats_table_read,

	.open = iwl3945_open_file_generic,

};



static void iwl3945_add_debugfs(void *priv, void *priv_sta,

				struct dentry *dir)

{

	struct iwl3945_rs_sta *lq_sta = 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);



}



static void iwl3945_remove_debugfs(void *priv, void *priv_sta)

{

	struct iwl3945_rs_sta *lq_sta = priv_sta;

	debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file);

}

#endif



static struct rate_control_ops rs_ops = {

	.module = NULL,

	.name = RS_NAME,
@@ -782,6 +839,11 @@ static struct rate_control_ops rs_ops = { 
	.free = rs_free,

	.alloc_sta = rs_alloc_sta,

	.free_sta = rs_free_sta,

#ifdef CONFIG_MAC80211_DEBUGFS

	.add_sta_debugfs = iwl3945_add_debugfs,

	.remove_sta_debugfs = iwl3945_remove_debugfs,

#endif



};



void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)