From 3905751243fd84340e027672d2f603e9009d490e Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Tue, 14 Sep 2010 12:46:04 -0700 Subject: ath9k: Print rxfilter in debugfs. Print raw and decoded rxfilter in debufs 'wiphy' file. Also, move variable-length printouts to bottom of file to make bounds checking easier. Signed-off-by: Ben Greear Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/debug.c | 53 +++++++++++++++++++++++++++------- 1 file changed, 43 insertions(+), 10 deletions(-) (limited to 'drivers/net/wireless/ath/ath9k/debug.c') diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index 54aae931424e..d65a896a421d 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -492,12 +492,55 @@ static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, unsigned int len = 0; int i; u8 addr[ETH_ALEN]; + u32 tmp; len += snprintf(buf + len, sizeof(buf) - len, "primary: %s (%s chan=%d ht=%d)\n", wiphy_name(sc->pri_wiphy->hw->wiphy), ath_wiphy_state_str(sc->pri_wiphy->state), sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht); + + put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr); + put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4); + len += snprintf(buf + len, sizeof(buf) - len, + "addr: %pM\n", addr); + put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr); + put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4); + len += snprintf(buf + len, sizeof(buf) - len, + "addrmask: %pM\n", addr); + tmp = ath9k_hw_getrxfilter(sc->sc_ah); + len += snprintf(buf + len, sizeof(buf) - len, + "rfilt: 0x%x", tmp); + if (tmp & ATH9K_RX_FILTER_UCAST) + len += snprintf(buf + len, sizeof(buf) - len, " UCAST"); + if (tmp & ATH9K_RX_FILTER_MCAST) + len += snprintf(buf + len, sizeof(buf) - len, " MCAST"); + if (tmp & ATH9K_RX_FILTER_BCAST) + len += snprintf(buf + len, sizeof(buf) - len, " BCAST"); + if (tmp & ATH9K_RX_FILTER_CONTROL) + len += snprintf(buf + len, sizeof(buf) - len, " CONTROL"); + if (tmp & ATH9K_RX_FILTER_BEACON) + len += snprintf(buf + len, sizeof(buf) - len, " BEACON"); + if (tmp & ATH9K_RX_FILTER_PROM) + len += snprintf(buf + len, sizeof(buf) - len, " PROM"); + if (tmp & ATH9K_RX_FILTER_PROBEREQ) + len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ"); + if (tmp & ATH9K_RX_FILTER_PHYERR) + len += snprintf(buf + len, sizeof(buf) - len, " PHYERR"); + if (tmp & ATH9K_RX_FILTER_MYBEACON) + len += snprintf(buf + len, sizeof(buf) - len, " MYBEACON"); + if (tmp & ATH9K_RX_FILTER_COMP_BAR) + len += snprintf(buf + len, sizeof(buf) - len, " COMP_BAR"); + if (tmp & ATH9K_RX_FILTER_PSPOLL) + len += snprintf(buf + len, sizeof(buf) - len, " PSPOLL"); + if (tmp & ATH9K_RX_FILTER_PHYRADAR) + len += snprintf(buf + len, sizeof(buf) - len, " PHYRADAR"); + if (tmp & ATH9K_RX_FILTER_MCAST_BCAST_ALL) + len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL\n"); + else + len += snprintf(buf + len, sizeof(buf) - len, "\n"); + + /* Put variable-length stuff down here, and check for overflows. */ for (i = 0; i < sc->num_sec_wiphy; i++) { struct ath_wiphy *aphy = sc->sec_wiphy[i]; if (aphy == NULL) @@ -508,16 +551,6 @@ static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, ath_wiphy_state_str(aphy->state), aphy->chan_idx, aphy->chan_is_ht); } - - put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr); - put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4); - len += snprintf(buf + len, sizeof(buf) - len, - "addr: %pM\n", addr); - put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr); - put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4); - len += snprintf(buf + len, sizeof(buf) - len, - "addrmask: %pM\n", addr); - if (len > sizeof(buf)) len = sizeof(buf); -- cgit v1.2.3 From 8e0167a4bdce4adcea64d2197378673d332cda28 Mon Sep 17 00:00:00 2001 From: Mohammed Shafi Shajakhan Date: Fri, 1 Oct 2010 15:25:05 +0530 Subject: ath9k : Fix for displaying the channel number In the ath9k debugging feature 'wiphy' the current channel used by the station is incorrectly displayed.This is because the channels available are sequentially mapped from numbers 0 to 37.This mapping cannot be changed as the channel number is also used as an array index This fix solves the above problem by calculating the channel number from center frequency. Signed-off-by: Mohammed Shafi Shajakhan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/debug.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'drivers/net/wireless/ath/ath9k/debug.c') diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index d65a896a421d..7a5932a6691a 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -488,6 +488,8 @@ static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ath_softc *sc = file->private_data; + struct ath_wiphy *aphy = sc->pri_wiphy; + struct ieee80211_channel *chan = aphy->hw->conf.channel; char buf[512]; unsigned int len = 0; int i; @@ -498,7 +500,8 @@ static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, "primary: %s (%s chan=%d ht=%d)\n", wiphy_name(sc->pri_wiphy->hw->wiphy), ath_wiphy_state_str(sc->pri_wiphy->state), - sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht); + ieee80211_frequency_to_channel(chan->center_freq), + aphy->chan_is_ht); put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr); put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4); @@ -545,11 +548,13 @@ static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, struct ath_wiphy *aphy = sc->sec_wiphy[i]; if (aphy == NULL) continue; + chan = aphy->hw->conf.channel; len += snprintf(buf + len, sizeof(buf) - len, - "secondary: %s (%s chan=%d ht=%d)\n", - wiphy_name(aphy->hw->wiphy), - ath_wiphy_state_str(aphy->state), - aphy->chan_idx, aphy->chan_is_ht); + "secondary: %s (%s chan=%d ht=%d)\n", + wiphy_name(aphy->hw->wiphy), + ath_wiphy_state_str(aphy->state), + ieee80211_frequency_to_channel(chan->center_freq), + aphy->chan_is_ht); } if (len > sizeof(buf)) len = sizeof(buf); -- cgit v1.2.3 From 99c15bf575b18e12c9373304a6a09a78f9c8a017 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Fri, 1 Oct 2010 12:26:30 -0700 Subject: ath9k: Report total tx/rx bytes and packets in debugfs. Includes pkts/bytes that may have had errors, and includes wireless headers when counting bytes. Signed-off-by: Ben Greear Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/debug.c | 15 +++++++++++++++ drivers/net/wireless/ath/ath9k/debug.h | 12 ++++++++++++ 2 files changed, 27 insertions(+) (limited to 'drivers/net/wireless/ath/ath9k/debug.c') diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index 7a5932a6691a..74a4570dc87f 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -701,6 +701,8 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf, PR("DESC CFG Error: ", desc_cfg_err); PR("DATA Underrun: ", data_underrun); PR("DELIM Underrun: ", delim_underrun); + PR("TX-Pkts-All: ", tx_pkts_all); + PR("TX-Bytes-All: ", tx_bytes_all); if (len > size) len = size; @@ -714,6 +716,9 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf, void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq, struct ath_buf *bf, struct ath_tx_status *ts) { + TX_STAT_INC(txq->axq_qnum, tx_pkts_all); + sc->debug.stats.txstats[txq->axq_qnum].tx_bytes_all += bf->bf_mpdu->len; + if (bf_isampdu(bf)) { if (bf_isxretried(bf)) TX_STAT_INC(txq->axq_qnum, a_xretries); @@ -808,6 +813,13 @@ static ssize_t read_file_recv(struct file *file, char __user *user_buf, PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL); PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL); + len += snprintf(buf + len, size - len, + "%18s : %10u\n", "RX-Pkts-All", + sc->debug.stats.rxstats.rx_pkts_all); + len += snprintf(buf + len, size - len, + "%18s : %10u\n", "RX-Bytes-All", + sc->debug.stats.rxstats.rx_bytes_all); + if (len > size) len = size; @@ -826,6 +838,9 @@ void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs) u32 phyerr; + RX_STAT_INC(rx_pkts_all); + sc->debug.stats.rxstats.rx_bytes_all += rs->rs_datalen; + if (rs->rs_status & ATH9K_RXERR_CRC) RX_STAT_INC(crc_err); if (rs->rs_status & ATH9K_RXERR_DECRYPT) diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h index 5d21704e87ff..822b6f3f23c5 100644 --- a/drivers/net/wireless/ath/ath9k/debug.h +++ b/drivers/net/wireless/ath/ath9k/debug.h @@ -89,6 +89,10 @@ struct ath_rc_stats { /** * struct ath_tx_stats - Statistics about TX + * @tx_pkts_all: No. of total frames transmitted, including ones that + may have had errors. + * @tx_bytes_all: No. of total bytes transmitted, including ones that + may have had errors. * @queued: Total MPDUs (non-aggr) queued * @completed: Total MPDUs (non-aggr) completed * @a_aggr: Total no. of aggregates queued @@ -107,6 +111,8 @@ struct ath_rc_stats { * @delim_urn: TX delimiter underrun errors */ struct ath_tx_stats { + u32 tx_pkts_all; + u32 tx_bytes_all; u32 queued; u32 completed; u32 a_aggr; @@ -124,6 +130,10 @@ struct ath_tx_stats { /** * struct ath_rx_stats - RX Statistics + * @rx_pkts_all: No. of total frames received, including ones that + may have had errors. + * @rx_bytes_all: No. of total bytes received, including ones that + may have had errors. * @crc_err: No. of frames with incorrect CRC value * @decrypt_crc_err: No. of frames whose CRC check failed after decryption process completed @@ -136,6 +146,8 @@ struct ath_tx_stats { * @phy_err_stats: Individual PHY error statistics */ struct ath_rx_stats { + u32 rx_pkts_all; + u32 rx_bytes_all; u32 crc_err; u32 decrypt_crc_err; u32 phy_err; -- cgit v1.2.3 From 772d5515635fef5bc7a9d0efee785b58b0181ee5 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 13 Oct 2010 16:43:26 +0200 Subject: ath9k: make rate control debugfs stats per station Move them to the same debugfs file that the other rc modules use. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/debug.c | 93 -------------------------- drivers/net/wireless/ath/ath9k/debug.h | 21 ------ drivers/net/wireless/ath/ath9k/rc.c | 115 ++++++++++++++++++++++++++++++++- drivers/net/wireless/ath/ath9k/rc.h | 11 ++++ 4 files changed, 124 insertions(+), 116 deletions(-) (limited to 'drivers/net/wireless/ath/ath9k/debug.c') diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index 74a4570dc87f..7f764e3d1c0a 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -378,95 +378,6 @@ static const struct file_operations fops_interrupt = { .owner = THIS_MODULE }; -void ath_debug_stat_rc(struct ath_softc *sc, int final_rate) -{ - struct ath_rc_stats *stats; - - stats = &sc->debug.stats.rcstats[final_rate]; - stats->success++; -} - -void ath_debug_stat_retries(struct ath_softc *sc, int rix, - int xretries, int retries, u8 per) -{ - struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix]; - - stats->xretries += xretries; - stats->retries += retries; - stats->per = per; -} - -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; - char *buf; - unsigned int len = 0, max; - int i = 0; - ssize_t retval; - - if (sc->cur_rate_table == NULL) - return 0; - - max = 80 + sc->cur_rate_table->rate_cnt * 1024 + 1; - buf = kmalloc(max, GFP_KERNEL); - if (buf == NULL) - return -ENOMEM; - - len += sprintf(buf, "%6s %6s %6s " - "%10s %10s %10s %10s\n", - "HT", "MCS", "Rate", - "Success", "Retries", "XRetries", "PER"); - - for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) { - u32 ratekbps = sc->cur_rate_table->info[i].ratekbps; - struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i]; - char mcs[5]; - char htmode[5]; - int used_mcs = 0, used_htmode = 0; - - if (WLAN_RC_PHY_HT(sc->cur_rate_table->info[i].phy)) { - used_mcs = snprintf(mcs, 5, "%d", - sc->cur_rate_table->info[i].ratecode); - - if (WLAN_RC_PHY_40(sc->cur_rate_table->info[i].phy)) - used_htmode = snprintf(htmode, 5, "HT40"); - else if (WLAN_RC_PHY_20(sc->cur_rate_table->info[i].phy)) - used_htmode = snprintf(htmode, 5, "HT20"); - else - used_htmode = snprintf(htmode, 5, "????"); - } - - mcs[used_mcs] = '\0'; - htmode[used_htmode] = '\0'; - - len += snprintf(buf + len, max - len, - "%6s %6s %3u.%d: " - "%10u %10u %10u %10u\n", - htmode, - mcs, - ratekbps / 1000, - (ratekbps % 1000) / 100, - stats->success, - stats->retries, - stats->xretries, - stats->per); - } - - if (len > max) - len = max; - - retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); - kfree(buf); - return retval; -} - -static const struct file_operations fops_rcstat = { - .read = read_file_rcstat, - .open = ath9k_debugfs_open, - .owner = THIS_MODULE -}; - static const char * ath_wiphy_state_str(enum ath_wiphy_state state) { switch (state) { @@ -977,10 +888,6 @@ int ath9k_init_debug(struct ath_hw *ah) sc, &fops_interrupt)) goto err; - if (!debugfs_create_file("rcstat", S_IRUSR, sc->debug.debugfs_phy, - sc, &fops_rcstat)) - goto err; - if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_wiphy)) goto err; diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h index 822b6f3f23c5..bb0823242ba0 100644 --- a/drivers/net/wireless/ath/ath9k/debug.h +++ b/drivers/net/wireless/ath/ath9k/debug.h @@ -80,13 +80,6 @@ struct ath_interrupt_stats { u32 bb_watchdog; }; -struct ath_rc_stats { - u32 success; - u32 retries; - u32 xretries; - u8 per; -}; - /** * struct ath_tx_stats - Statistics about TX * @tx_pkts_all: No. of total frames transmitted, including ones that @@ -160,7 +153,6 @@ struct ath_rx_stats { struct ath_stats { struct ath_interrupt_stats istats; - struct ath_rc_stats rcstats[RATE_TABLE_SIZE]; struct ath_tx_stats txstats[ATH9K_NUM_TX_QUEUES]; struct ath_rx_stats rxstats; }; @@ -177,12 +169,9 @@ void ath9k_exit_debug(struct ath_hw *ah); int ath9k_debug_create_root(void); void ath9k_debug_remove_root(void); void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status); -void ath_debug_stat_rc(struct ath_softc *sc, int final_rate); void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq, struct ath_buf *bf, struct ath_tx_status *ts); void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs); -void ath_debug_stat_retries(struct ath_softc *sc, int rix, - int xretries, int retries, u8 per); #else @@ -209,11 +198,6 @@ static inline void ath_debug_stat_interrupt(struct ath_softc *sc, { } -static inline void ath_debug_stat_rc(struct ath_softc *sc, - int final_rate) -{ -} - static inline void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq, struct ath_buf *bf, @@ -226,11 +210,6 @@ static inline void ath_debug_stat_rx(struct ath_softc *sc, { } -static inline void ath_debug_stat_retries(struct ath_softc *sc, int rix, - int xretries, int retries, u8 per) -{ -} - #endif /* CONFIG_ATH9K_DEBUGFS */ #endif /* DEBUG_H */ diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c index abebf2466a13..5db3a12356ec 100644 --- a/drivers/net/wireless/ath/ath9k/rc.c +++ b/drivers/net/wireless/ath/ath9k/rc.c @@ -1026,6 +1026,16 @@ static bool ath_rc_update_per(struct ath_softc *sc, return state_change; } +static void ath_debug_stat_retries(struct ath_rate_priv *rc, int rix, + int xretries, int retries, u8 per) +{ + struct ath_rc_stats *stats = &rc->rcstats[rix]; + + stats->xretries += xretries; + stats->retries += retries; + stats->per = per; +} + /* Update PER, RSSI and whatever else that the code thinks it is doing. If you can make sense of all this, you really need to go out more. */ @@ -1098,7 +1108,7 @@ static void ath_rc_update_ht(struct ath_softc *sc, ath_rc_priv->per_down_time = now_msec; } - ath_debug_stat_retries(sc, tx_rate, xretries, retries, + ath_debug_stat_retries(ath_rc_priv, tx_rate, xretries, retries, ath_rc_priv->per[tx_rate]); } @@ -1294,6 +1304,7 @@ static void ath_rc_init(struct ath_softc *sc, ath_rc_sort_validrates(rate_table, ath_rc_priv); ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4]; sc->cur_rate_table = rate_table; + ath_rc_priv->rate_table = rate_table; ath_print(common, ATH_DBG_CONFIG, "RC Initialized with capabilities: 0x%x\n", @@ -1340,6 +1351,15 @@ static bool ath_tx_aggr_check(struct ath_softc *sc, struct ath_node *an, /* mac80211 Rate Control callbacks */ /***********************************/ +static void ath_debug_stat_rc(struct ath_rate_priv *rc, int final_rate) +{ + struct ath_rc_stats *stats; + + stats = &rc->rcstats[final_rate]; + stats->success++; +} + + static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, struct ieee80211_sta *sta, void *priv_sta, struct sk_buff *skb) @@ -1419,7 +1439,7 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, } } - ath_debug_stat_rc(sc, ath_rc_get_rateindex(sc->cur_rate_table, + ath_debug_stat_rc(ath_rc_priv, ath_rc_get_rateindex(sc->cur_rate_table, &tx_info->status.rates[final_ts_idx])); } @@ -1521,6 +1541,94 @@ static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband, } } +#ifdef CONFIG_ATH9K_DEBUGFS + +static int ath9k_debugfs_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t read_file_rcstat(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath_rate_priv *rc = file->private_data; + char *buf; + unsigned int len = 0, max; + int i = 0; + ssize_t retval; + + if (rc->rate_table == NULL) + return 0; + + max = 80 + rc->rate_table->rate_cnt * 1024 + 1; + buf = kmalloc(max, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + + len += sprintf(buf, "%6s %6s %6s " + "%10s %10s %10s %10s\n", + "HT", "MCS", "Rate", + "Success", "Retries", "XRetries", "PER"); + + for (i = 0; i < rc->rate_table->rate_cnt; i++) { + u32 ratekbps = rc->rate_table->info[i].ratekbps; + struct ath_rc_stats *stats = &rc->rcstats[i]; + char mcs[5]; + char htmode[5]; + int used_mcs = 0, used_htmode = 0; + + if (WLAN_RC_PHY_HT(rc->rate_table->info[i].phy)) { + used_mcs = snprintf(mcs, 5, "%d", + rc->rate_table->info[i].ratecode); + + if (WLAN_RC_PHY_40(rc->rate_table->info[i].phy)) + used_htmode = snprintf(htmode, 5, "HT40"); + else if (WLAN_RC_PHY_20(rc->rate_table->info[i].phy)) + used_htmode = snprintf(htmode, 5, "HT20"); + else + used_htmode = snprintf(htmode, 5, "????"); + } + + mcs[used_mcs] = '\0'; + htmode[used_htmode] = '\0'; + + len += snprintf(buf + len, max - len, + "%6s %6s %3u.%d: " + "%10u %10u %10u %10u\n", + htmode, + mcs, + ratekbps / 1000, + (ratekbps % 1000) / 100, + stats->success, + stats->retries, + stats->xretries, + stats->per); + } + + if (len > max) + len = max; + + retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + return retval; +} + +static const struct file_operations fops_rcstat = { + .read = read_file_rcstat, + .open = ath9k_debugfs_open, + .owner = THIS_MODULE +}; + +static void ath_rate_add_sta_debugfs(void *priv, void *priv_sta, + struct dentry *dir) +{ + struct ath_rate_priv *rc = priv_sta; + debugfs_create_file("rc_stats", S_IRUGO, dir, rc, &fops_rcstat); +} + +#endif /* CONFIG_ATH9K_DEBUGFS */ + static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) { struct ath_wiphy *aphy = hw->priv; @@ -1567,6 +1675,9 @@ static struct rate_control_ops ath_rate_ops = { .free = ath_rate_free, .alloc_sta = ath_rate_alloc_sta, .free_sta = ath_rate_free_sta, +#ifdef CONFIG_ATH9K_DEBUGFS + .add_sta_debugfs = ath_rate_add_sta_debugfs, +#endif }; int ath_rate_control_register(void) diff --git a/drivers/net/wireless/ath/ath9k/rc.h b/drivers/net/wireless/ath/ath9k/rc.h index fbb1d33ee4b7..2f46a2266ba1 100644 --- a/drivers/net/wireless/ath/ath9k/rc.h +++ b/drivers/net/wireless/ath/ath9k/rc.h @@ -176,6 +176,13 @@ struct ath_rateset { u8 rs_rates[ATH_RATE_MAX]; }; +struct ath_rc_stats { + u32 success; + u32 retries; + u32 xretries; + u8 per; +}; + /** * struct ath_rate_priv - Rate Control priv data * @state: RC state @@ -212,6 +219,10 @@ struct ath_rate_priv { struct ath_rateset neg_rates; struct ath_rateset neg_ht_rates; struct ath_rate_softc *asc; + const struct ath_rate_table *rate_table; + + struct dentry *debugfs_rcstats; + struct ath_rc_stats rcstats[RATE_TABLE_SIZE]; }; #define ATH_TX_INFO_FRAME_TYPE_INTERNAL (1 << 0) -- cgit v1.2.3