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ath9k: Add debugfs file for RX errors
This file can be used to track frame reception errors. PHY error counts are also added. Location: ath9k/phy#/recv Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith
John W. Linville
parent
cc9c378aa5
commit
1395d3f00a
@ -580,6 +580,116 @@ static const struct file_operations fops_xmit = {
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.owner = THIS_MODULE
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};
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static ssize_t read_file_recv(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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#define PHY_ERR(s, p) \
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len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \
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sc->debug.stats.rxstats.phy_err_stats[p]);
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struct ath_softc *sc = file->private_data;
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char *buf;
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unsigned int len = 0, size = 1152;
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ssize_t retval = 0;
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buf = kzalloc(size, GFP_KERNEL);
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if (buf == NULL)
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return 0;
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len += snprintf(buf + len, size - len,
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"%18s : %10u\n", "CRC ERR",
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sc->debug.stats.rxstats.crc_err);
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len += snprintf(buf + len, size - len,
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"%18s : %10u\n", "DECRYPT CRC ERR",
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sc->debug.stats.rxstats.decrypt_crc_err);
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len += snprintf(buf + len, size - len,
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"%18s : %10u\n", "PHY ERR",
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sc->debug.stats.rxstats.phy_err);
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len += snprintf(buf + len, size - len,
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"%18s : %10u\n", "MIC ERR",
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sc->debug.stats.rxstats.mic_err);
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len += snprintf(buf + len, size - len,
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"%18s : %10u\n", "PRE-DELIM CRC ERR",
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sc->debug.stats.rxstats.pre_delim_crc_err);
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len += snprintf(buf + len, size - len,
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"%18s : %10u\n", "POST-DELIM CRC ERR",
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sc->debug.stats.rxstats.post_delim_crc_err);
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len += snprintf(buf + len, size - len,
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"%18s : %10u\n", "DECRYPT BUSY ERR",
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sc->debug.stats.rxstats.decrypt_busy_err);
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PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN);
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PHY_ERR("TIMING", ATH9K_PHYERR_TIMING);
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PHY_ERR("PARITY", ATH9K_PHYERR_PARITY);
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PHY_ERR("RATE", ATH9K_PHYERR_RATE);
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PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH);
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PHY_ERR("RADAR", ATH9K_PHYERR_RADAR);
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PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE);
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PHY_ERR("TOR", ATH9K_PHYERR_TOR);
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PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING);
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PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY);
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PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL);
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PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL);
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PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP);
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PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE);
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PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART);
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PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT);
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PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING);
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PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC);
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PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL);
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PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE);
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PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART);
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PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL);
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PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP);
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PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR);
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PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL);
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PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL);
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retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
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kfree(buf);
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return retval;
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#undef PHY_ERR
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}
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void ath_debug_stat_rx(struct ath_softc *sc, struct ath_buf *bf)
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{
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#define RX_STAT_INC(c) sc->debug.stats.rxstats.c++
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#define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++
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struct ath_desc *ds = bf->bf_desc;
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u32 phyerr;
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if (ds->ds_rxstat.rs_status & ATH9K_RXERR_CRC)
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RX_STAT_INC(crc_err);
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if (ds->ds_rxstat.rs_status & ATH9K_RXERR_DECRYPT)
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RX_STAT_INC(decrypt_crc_err);
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if (ds->ds_rxstat.rs_status & ATH9K_RXERR_MIC)
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RX_STAT_INC(mic_err);
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if (ds->ds_rxstat.rs_status & ATH9K_RX_DELIM_CRC_PRE)
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RX_STAT_INC(pre_delim_crc_err);
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if (ds->ds_rxstat.rs_status & ATH9K_RX_DELIM_CRC_POST)
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RX_STAT_INC(post_delim_crc_err);
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if (ds->ds_rxstat.rs_status & ATH9K_RX_DECRYPT_BUSY)
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RX_STAT_INC(decrypt_busy_err);
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if (ds->ds_rxstat.rs_status & ATH9K_RXERR_PHY) {
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RX_STAT_INC(phy_err);
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phyerr = ds->ds_rxstat.rs_phyerr & 0x24;
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RX_PHY_ERR_INC(phyerr);
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}
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#undef RX_STAT_INC
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#undef RX_PHY_ERR_INC
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}
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static const struct file_operations fops_recv = {
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.read = read_file_recv,
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.open = ath9k_debugfs_open,
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.owner = THIS_MODULE
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};
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int ath9k_init_debug(struct ath_hw *ah)
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{
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struct ath_common *common = ath9k_hw_common(ah);
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@ -632,6 +742,13 @@ int ath9k_init_debug(struct ath_hw *ah)
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if (!sc->debug.debugfs_xmit)
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goto err;
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sc->debug.debugfs_recv = debugfs_create_file("recv",
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S_IRUSR,
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sc->debug.debugfs_phy,
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sc, &fops_recv);
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if (!sc->debug.debugfs_recv)
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goto err;
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return 0;
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err:
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ath9k_exit_debug(ah);
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@ -643,6 +760,7 @@ void ath9k_exit_debug(struct ath_hw *ah)
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struct ath_common *common = ath9k_hw_common(ah);
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struct ath_softc *sc = (struct ath_softc *) common->priv;
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debugfs_remove(sc->debug.debugfs_recv);
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debugfs_remove(sc->debug.debugfs_xmit);
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debugfs_remove(sc->debug.debugfs_wiphy);
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debugfs_remove(sc->debug.debugfs_rcstat);
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@ -116,10 +116,35 @@ struct ath_tx_stats {
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u32 delim_underrun;
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};
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/**
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* struct ath_rx_stats - RX Statistics
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* @crc_err: No. of frames with incorrect CRC value
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* @decrypt_crc_err: No. of frames whose CRC check failed after
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decryption process completed
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* @phy_err: No. of frames whose reception failed because the PHY
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encountered an error
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* @mic_err: No. of frames with incorrect TKIP MIC verification failure
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* @pre_delim_crc_err: Pre-Frame delimiter CRC error detections
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* @post_delim_crc_err: Post-Frame delimiter CRC error detections
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* @decrypt_busy_err: Decryption interruptions counter
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* @phy_err_stats: Individual PHY error statistics
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*/
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struct ath_rx_stats {
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u32 crc_err;
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u32 decrypt_crc_err;
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u32 phy_err;
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u32 mic_err;
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u32 pre_delim_crc_err;
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u32 post_delim_crc_err;
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u32 decrypt_busy_err;
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u32 phy_err_stats[ATH9K_PHYERR_MAX];
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};
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struct ath_stats {
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struct ath_interrupt_stats istats;
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struct ath_rc_stats rcstats[RATE_TABLE_SIZE];
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struct ath_tx_stats txstats[ATH9K_NUM_TX_QUEUES];
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struct ath_rx_stats rxstats;
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};
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struct ath9k_debug {
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@ -130,6 +155,7 @@ struct ath9k_debug {
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struct dentry *debugfs_rcstat;
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struct dentry *debugfs_wiphy;
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struct dentry *debugfs_xmit;
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struct dentry *debugfs_recv;
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struct ath_stats stats;
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};
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@ -142,6 +168,7 @@ void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);
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void ath_debug_stat_rc(struct ath_softc *sc, int final_rate);
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void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
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struct ath_buf *bf);
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void ath_debug_stat_rx(struct ath_softc *sc, struct ath_buf *bf);
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void ath_debug_stat_retries(struct ath_softc *sc, int rix,
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int xretries, int retries, u8 per);
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@ -181,6 +208,11 @@ static inline void ath_debug_stat_tx(struct ath_softc *sc,
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{
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}
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static inline void ath_debug_stat_rx(struct ath_softc *sc,
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struct ath_buf *bf)
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{
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}
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static inline void ath_debug_stat_retries(struct ath_softc *sc, int rix,
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int xretries, int retries, u8 per)
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{
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@ -167,6 +167,40 @@ struct ath_rx_status {
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#define ATH9K_RXKEYIX_INVALID ((u8)-1)
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#define ATH9K_TXKEYIX_INVALID ((u32)-1)
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enum ath9k_phyerr {
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ATH9K_PHYERR_UNDERRUN = 0, /* Transmit underrun */
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ATH9K_PHYERR_TIMING = 1, /* Timing error */
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ATH9K_PHYERR_PARITY = 2, /* Illegal parity */
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ATH9K_PHYERR_RATE = 3, /* Illegal rate */
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ATH9K_PHYERR_LENGTH = 4, /* Illegal length */
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ATH9K_PHYERR_RADAR = 5, /* Radar detect */
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ATH9K_PHYERR_SERVICE = 6, /* Illegal service */
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ATH9K_PHYERR_TOR = 7, /* Transmit override receive */
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ATH9K_PHYERR_OFDM_TIMING = 17,
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ATH9K_PHYERR_OFDM_SIGNAL_PARITY = 18,
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ATH9K_PHYERR_OFDM_RATE_ILLEGAL = 19,
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ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL = 20,
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ATH9K_PHYERR_OFDM_POWER_DROP = 21,
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ATH9K_PHYERR_OFDM_SERVICE = 22,
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ATH9K_PHYERR_OFDM_RESTART = 23,
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ATH9K_PHYERR_FALSE_RADAR_EXT = 24,
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ATH9K_PHYERR_CCK_TIMING = 25,
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ATH9K_PHYERR_CCK_HEADER_CRC = 26,
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ATH9K_PHYERR_CCK_RATE_ILLEGAL = 27,
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ATH9K_PHYERR_CCK_SERVICE = 30,
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ATH9K_PHYERR_CCK_RESTART = 31,
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ATH9K_PHYERR_CCK_LENGTH_ILLEGAL = 32,
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ATH9K_PHYERR_CCK_POWER_DROP = 33,
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ATH9K_PHYERR_HT_CRC_ERROR = 34,
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ATH9K_PHYERR_HT_LENGTH_ILLEGAL = 35,
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ATH9K_PHYERR_HT_RATE_ILLEGAL = 36,
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ATH9K_PHYERR_MAX = 37,
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};
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struct ath_desc {
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u32 ds_link;
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u32 ds_data;
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@ -571,6 +571,8 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
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hw = ath_get_virt_hw(sc, hdr);
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rx_stats = &ds->ds_rxstat;
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ath_debug_stat_rx(sc, bf);
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/*
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* If we're asked to flush receive queue, directly
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* chain it back at the queue without processing it.
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