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ath9k: Add debugfs files for printing TX rate details 

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2009-01-30 14:32:09 +05:30 committed by John W. Linville
parent c89424df44
commit 7a7dec6562
3 changed files with 119 additions and 0 deletions
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17
drivers/net/wireless/ath9k/core.h
View File

@ -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 {

100
drivers/net/wireless/ath9k/debug.c
View File

@ -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);

2
drivers/net/wireless/ath9k/rc.c
View File

@ -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);
}