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Commit 7a7dec65 authored by Sujith's avatar Sujith Committed by John W. Linville
Browse files

ath9k: Add debugfs files for printing TX rate details 



Signed-off-by: default avatarSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent c89424df

drivers/net/wireless/ath9k/core.h

+17 −0
Original line number Diff line number Diff line
@@ -131,8 +131,18 @@ struct ath_interrupt_stats { 
	u32 dtim;

};



struct ath_legacy_rc_stats {

	u32 success;

};



struct ath_11n_rc_stats {

	u32 success;

};



struct ath_stats {

	struct ath_interrupt_stats istats;

	struct ath_legacy_rc_stats legacy_rcstats[12]; /* max(11a,11b,11g) */

	struct ath_11n_rc_stats n_rcstats[16]; /* 0..15 MCS rates */

};



struct ath9k_debug {
@@ -141,6 +151,7 @@ struct ath9k_debug { 
	struct dentry *debugfs_phy;

	struct dentry *debugfs_dma;

	struct dentry *debugfs_interrupt;

	struct dentry *debugfs_rcstat;

	struct ath_stats stats;

};
@@ -148,6 +159,7 @@ void DPRINTF(struct ath_softc *sc, int dbg_mask, const char *fmt, ...); 
int ath9k_init_debug(struct ath_softc *sc);

void ath9k_exit_debug(struct ath_softc *sc);

void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);

void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb);



#else
@@ -170,6 +182,11 @@ static inline void ath_debug_stat_interrupt(struct ath_softc *sc, 
{

}



static inline void ath_debug_stat_rc(struct ath_softc *sc,

				     struct sk_buff *skb)

{

}



#endif /* CONFIG_ATH9K_DEBUG */



struct ath_config {

drivers/net/wireless/ath9k/debug.c

+100 −0
Original line number Diff line number Diff line
@@ -222,6 +222,98 @@ static const struct file_operations fops_interrupt = { 
	.owner = THIS_MODULE

};



static void ath_debug_stat_11n_rc(struct ath_softc *sc, struct sk_buff *skb)

{

	struct ath_tx_info_priv *tx_info_priv = NULL;

	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);

	struct ieee80211_tx_rate *rates = tx_info->status.rates;

	int final_ts_idx, idx;



	tx_info_priv = ATH_TX_INFO_PRIV(tx_info);

	final_ts_idx = tx_info_priv->tx.ts_rateindex;

	idx = sc->cur_rate_table->info[rates[final_ts_idx].idx].dot11rate;



	sc->sc_debug.stats.n_rcstats[idx].success++;

}



static void ath_debug_stat_legacy_rc(struct ath_softc *sc, struct sk_buff *skb)

{

	struct ath_tx_info_priv *tx_info_priv = NULL;

	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);

	struct ieee80211_tx_rate *rates = tx_info->status.rates;

	int final_ts_idx, idx;



	tx_info_priv = ATH_TX_INFO_PRIV(tx_info);

	final_ts_idx = tx_info_priv->tx.ts_rateindex;

	idx = rates[final_ts_idx].idx;



	sc->sc_debug.stats.legacy_rcstats[idx].success++;

}



void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb)

{

	if (conf_is_ht(&sc->hw->conf))

		ath_debug_stat_11n_rc(sc, skb);

	else

		ath_debug_stat_legacy_rc(sc, skb);

}



static ssize_t ath_read_file_stat_11n_rc(struct file *file,

					 char __user *user_buf,

					 size_t count, loff_t *ppos)

{

	struct ath_softc *sc = file->private_data;

	char buf[512];

	unsigned int len = 0;

	int i = 0;



	len += sprintf(buf, "%7s %13s\n\n", "Rate", "Success");



	for (i = 0; i <= 15; i++) {

		len += snprintf(buf + len, sizeof(buf) - len,

				"%5s%3d: %8u\n", "MCS", i,

				sc->sc_debug.stats.n_rcstats[i].success);

	}



	return simple_read_from_buffer(user_buf, count, ppos, buf, len);

}



static ssize_t ath_read_file_stat_legacy_rc(struct file *file,

					    char __user *user_buf,

					    size_t count, loff_t *ppos)

{

	struct ath_softc *sc = file->private_data;

	char buf[512];

	unsigned int len = 0;

	int i = 0;



	len += sprintf(buf, "%7s %13s\n\n", "Rate", "Success");



	for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) {

		len += snprintf(buf + len, sizeof(buf) - len, "%5u: %12u\n",

				sc->cur_rate_table->info[i].ratekbps / 1000,

				sc->sc_debug.stats.legacy_rcstats[i].success);

	}



	return simple_read_from_buffer(user_buf, count, ppos, buf, len);

}



static ssize_t read_file_rcstat(struct file *file, char __user *user_buf,

				size_t count, loff_t *ppos)

{

	struct ath_softc *sc = file->private_data;



	if (conf_is_ht(&sc->hw->conf))

		return ath_read_file_stat_11n_rc(file, user_buf, count, ppos);

	else

		return ath_read_file_stat_legacy_rc(file, user_buf, count ,ppos);

}



static const struct file_operations fops_rcstat = {

	.read = read_file_rcstat,

	.open = ath9k_debugfs_open,

	.owner = THIS_MODULE

};



int ath9k_init_debug(struct ath_softc *sc)

{
@@ -248,6 +340,13 @@ int ath9k_init_debug(struct ath_softc *sc) 
	if (!sc->sc_debug.debugfs_interrupt)

		goto err;



	sc->sc_debug.debugfs_rcstat = debugfs_create_file("rcstat",

						  S_IRUGO,

						  sc->sc_debug.debugfs_phy,

						  sc, &fops_rcstat);

	if (!sc->sc_debug.debugfs_rcstat)

		goto err;



	return 0;

err:

	ath9k_exit_debug(sc);
@@ -256,6 +355,7 @@ int ath9k_init_debug(struct ath_softc *sc) 


void ath9k_exit_debug(struct ath_softc *sc)

{

	debugfs_remove(sc->sc_debug.debugfs_rcstat);

	debugfs_remove(sc->sc_debug.debugfs_interrupt);

	debugfs_remove(sc->sc_debug.debugfs_dma);

	debugfs_remove(sc->sc_debug.debugfs_phy);

drivers/net/wireless/ath9k/rc.c

+2 −0
Original line number Diff line number Diff line
@@ -1544,6 +1544,8 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, 
				ieee80211_start_tx_ba_session(sc->hw, hdr->addr1, tid);

		}

	}



	ath_debug_stat_rc(sc, skb);

exit:

	kfree(tx_info_priv);

}