From 7a7dec656252a5784218a22abf76ad1cdef115d0 Mon Sep 17 00:00:00 2001 From: Sujith Date: Fri, 30 Jan 2009 14:32:09 +0530 Subject: [PATCH] ath9k: Add debugfs files for printing TX rate details Signed-off-by: Sujith Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/core.h | 17 +++++ drivers/net/wireless/ath9k/debug.c | 100 +++++++++++++++++++++++++++++ drivers/net/wireless/ath9k/rc.c | 2 + 3 files changed, 119 insertions(+) diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h index 8683fc8ddb3c..791f1acc0bb3 100644 --- a/drivers/net/wireless/ath9k/core.h +++ b/drivers/net/wireless/ath9k/core.h @@ -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 { diff --git a/drivers/net/wireless/ath9k/debug.c b/drivers/net/wireless/ath9k/debug.c index 1680164b4adb..6181e49eecba 100644 --- a/drivers/net/wireless/ath9k/debug.c +++ b/drivers/net/wireless/ath9k/debug.c @@ -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 @@ err: 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); diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c index a8c4f9757eb1..704b62778142 100644 --- a/drivers/net/wireless/ath9k/rc.c +++ b/drivers/net/wireless/ath9k/rc.c @@ -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); } -- 2.30.2